CN108044989B - Blood bag making machine - Google Patents

Abstract

The invention discloses a blood bag making machine, which comprises: the film releasing device is used for releasing the films of the two layers of film materials; the film pulling device is used for pulling the film material to realize that the film material is positioned at a corresponding station; the half-cutting device is arranged at the rear end of the film releasing device and used for half-cutting the two layers of film materials after being released by the film releasing device; the spot welding device is arranged at the rear end of the half-cutting device and used for ensuring that two layers of film materials are overlapped reliably; the punching device is arranged at the rear end of the spot welding device and used for punching the film; the bag opening device is used for opening bags of two layers of film materials so as to enable the electrode inserted with the mouth tube to extend into the space between the film materials; a tube feeding device for inserting the electrode into the tube; the high-frequency welding device is used for welding the mouth tube and the two layers of film materials to obtain a blood bag, the bag cutting device is used for cutting and forming the bag, the edge tearing device is used for removing waste edges, and the output device is used for outputting the final bag. The blood bag making machine is reasonable in structure, high in bag making efficiency and high in automation degree.

Description

Blood bag making machine

Technical Field

The invention relates to the technical field of blood bag production equipment, in particular to a blood bag making machine.

Background

As is well known, a blood bag making machine makes two rolls of PVC film materials into a blood bag finished product through the procedures of film releasing, half cutting, film pulling, spot welding, punching, pipe feeding, bag opening, high-frequency welding, bag cutting, edge tearing, output and the like.

PVC (polyvinyl chloride) is a polymer commonly used for manufacturing intravenous bag films at present. PVC is nontoxic, but can react with medicines, and is brittle, so that about 40% of plasticizer DEHP is needed to make PVC transparent and soft when the PVC is processed into soft bags. These plasticizers can penetrate into the drug and be absorbed by the human body. Accumulation of high amounts of DEHP may lead to premature girls and physiological dysplasia in boys. And the PVC can generate dioxin substances with strong toxicity during combustion, thereby causing great harm to the environment.

At present, the non-PVC large transfusion film has the advantages of good chemical inertness, no toxicity, no adhesive and plasticizer, high-temperature sterilization at 121 ℃, low water vapor permeability, softness, toughness, good transparency, good low-temperature resistance, heat sealing and the like, does not produce hydrogen chloride, dioxin and the like when being burnt, has no influence on environment, is easy to process, meets the environmental protection requirement, and is the development direction of intravenous transfusion, but the blood bag is basically made of medical PVC materials. The performance of the blood bag is higher than that of a common infusion bag, the blood bag is directly contacted with blood, the sanitation, strength, flexibility, tightness and the like of the common package are required, the blood bag also has good biological performance, the blood compatibility, hemolysis, pyrogen and blood cell survival rate meet the specified requirements, and the blood bag also can resist high-pressure steam sterilization and the like.

Disclosure of Invention

The invention aims to provide a blood bag making machine which is reasonable in structure, high in bag making efficiency and high in automation degree.

In order to achieve the above object, the present invention provides a blood bag making machine comprising:

the film releasing device is used for releasing the films of the two layers of film materials;

the film pulling device is used for pulling the film material to realize that the film material is positioned at a corresponding station;

the half-cutting device is arranged at the rear end of the film releasing device and used for half-cutting the two layers of film materials after being released by the film releasing device;

the spot welding device is arranged at the rear end of the half-cutting device and used for ensuring that two layers of film materials are overlapped reliably;

the punching device is arranged at the rear end of the spot welding device and used for punching the film;

the bag opening device is used for opening bags of two layers of film materials so as to enable the electrode inserted with the mouth tube to extend into the space between the film materials;

a tube feeding device for inserting the electrode into the tube;

the high-frequency welding device is used for welding the mouth tube and the two layers of membrane materials to obtain a blood bag;

the bag cutting device is arranged at the output end of the high-frequency welding device and used for cutting and forming the bag;

the edge tearing device is used for removing the slitter edges of the cut and formed blood bags;

and an output device for outputting the finally formed blood bag.

Preferably, the film removing device comprises:

an upper fixing shaft and a lower fixing shaft for fixing the two film rolls respectively;

an upper driving wheel assembly and a lower driving wheel assembly for respectively passing the film materials of the two film rolls;

the upper deviation rectifying component and the lower deviation rectifying component are respectively positioned behind the upper driving wheel component and the lower driving wheel component and used for rectifying the deviation of the film materials of the two film rolls;

the upper buffer component is positioned between the upper deviation rectifying component and the upper driving wheel component and the lower buffer component is positioned between the lower deviation rectifying component and the lower driven wheel component, the film materials of the two film rolls are respectively conveyed along the directions from the upper fixed shaft of the film roll to the upper deviation rectifying component and the lower fixed shaft of the film roll to the lower deviation rectifying component, and the upper buffer component and the lower buffer component can reciprocate along the up-down direction so as to buffer the film materials of the two film rolls in the upper buffer component and the lower buffer component respectively;

the upper static electricity removing and dust removing assembly and the lower static electricity removing and dust removing assembly are respectively positioned behind the upper deviation correcting assembly and the lower deviation correcting assembly and are used for respectively removing static electricity and dust on the surfaces of two layers of film materials to be combined.

Preferably, the method comprises the steps of,

an upper deviation rectifying detection element is arranged between the upper deviation rectifying components and used for detecting whether the film width direction of the film material output by the upper buffer component is at a preset position or not; the upper deviation rectifying detection element is connected with the upper deviation rectifying assembly, and the upper deviation rectifying assembly can adjust the position of the film material in the film width direction;

the lower deviation rectifying assembly is also provided with a lower deviation rectifying detection element which is used for detecting whether the film width direction of the film material output by the lower buffer assembly is at a preset position; the lower deviation rectifying detection element is connected with the lower deviation rectifying assembly, and the lower deviation rectifying assembly can adjust the position of the membrane material in the membrane width direction.

Preferably, the half-cutting device comprises:

cutting boards;

the upper half cutter assembly is positioned at the upper end of the chopping board and used for half-cutting the PVC film material positioned on the upper surface of the chopping board;

the lower half cutter component is positioned at the lower end of the cutting board and used for half-cutting the PVC film material positioned on the lower surface of the cutting board.

Preferably, the film pulling device comprises:

a guide shaft penetrating all the process positions of the blood bag making machine;

the power assembly is connected with the connecting shaft and used for realizing the forward and backward movement of the connecting shaft;

The front pressing cylinder, the middle pressing cylinder and the rear pressing cylinder are respectively arranged at the front, the middle and the rear positions of the connecting shaft and used for allowing the membrane material to penetrate and pressing the membrane material; when the front pressing cylinder, the middle pressing cylinder and the rear pressing cylinder press the film material and can synchronously move under the forward and backward movement of the connecting shaft, the film pulling action is realized;

the holding cylinders are respectively arranged at the front side and the rear side of the front pressing cylinder, the middle pressing cylinder and the rear pressing cylinder and used for allowing the membrane material to penetrate and pressing the membrane material; in order to realize that all the holding cylinders relax and do not compress the membrane material in the membrane pulling process, and when the membrane pulling process is finished, all the holding cylinders compress the membrane material, so that the position of the membrane material is ensured.

Preferably, the upper tube device comprises:

a turntable seat with a fixed position;

the rotary gear and gear ring assembly is arranged in the rotary table seat and is arranged between the high-frequency welding assembly and an annular structure formed by at least two mouth pipe conveying parts for conveying mouth pipes;

a rotating bracket mounted to the gear-ring assembly and capable of rotating synchronously with the gear-ring assembly;

a pushing electrode assembly provided to the rotating bracket and capable of pushing the electrode with the mouth tube;

The gear ring assembly can be stopped at different mouth tube conveying parts so as to realize that mouth tubes with different sizes are sleeved on different electrodes, and the gear ring assembly can rotate and stop at the high-frequency welding assembly so as to realize that the mouth tubes are welded on the PVC membrane material.

Preferably, the mouth tube conveying part specifically includes:

a conveying mechanism for continuously conveying the mouth tube;

a top mouth tube cylinder which is positioned above the conveying mechanism, can reciprocate in the vertical direction and is used for realizing a certain interval between two adjacent mouth tubes;

a detection part positioned at the front end of the conveying mechanism and used for detecting whether the front-back direction of the mouth tube is correct;

the mouth tube rotating seat is arranged at the front end of the conveying mechanism and connected with the detecting part, so that when the detecting part detects that the front-back direction of the mouth tube is incorrect, the mouth tube rotating seat can lift the mouth tube and rotate 180 degrees, and the front-back direction of the mouth tube is correct;

and the clamping hand assembly is positioned above the conveying mechanism and used for clamping and inserting the mouth tube with the correct front-back direction into the electrode.

Preferably, the high-frequency welding device comprises a separation assembly for separating the upper layer of membrane material from the lower layer of membrane material, and an upper die and a lower die for performing high-frequency welding on the upper layer of membrane material and the lower layer of membrane material to form a blood bag; wherein: the upper die and the lower die comprise a head welding module and a tail welding module which are used for respectively welding the head part and the tail part of the blood bag.

Preferably, the separation assembly comprises:

a membrane separating plate for separating the upper and lower layers of membrane materials;

the upper bag opening assembly and the lower bag opening assembly are positioned on the upper side and the lower side of the upper layer of film material and used for respectively adsorbing each layer of film material;

the upper push-pull cylinder and the lower push-pull cylinder are respectively connected with the upper bag opening assembly and the lower bag opening assembly and used for realizing left-right movement of the upper bag opening assembly and the lower bag opening assembly;

the upper lifting cylinder and the lower lifting cylinder are respectively connected with the upper bag opening assembly and the lower bag opening assembly and used for realizing the opening and combination of the upper bag opening assembly and the lower bag opening assembly.

Preferably, the upper die has a first support plate and the first support plate is located at a position other than the head welding module, and the lower die has a first spring assembly capable of contacting the first support plate when welded, so that the first support plate and the first spring assembly press the non-head position of the blood bag when welded;

the upper die is provided with a second supporting plate, the second supporting plate is positioned at a position which is not the tail welding module, and the lower die is provided with a second spring assembly which can be contacted with the second supporting plate when being welded, so that the second supporting plate and the second spring assembly press the non-tail position of the blood bag when being welded.

Preferably, the bag cutting device comprises:

the support bag component is used for supporting the membrane material;

the lower die assembly can be lifted to a position flush with the membrane material;

and an upper die assembly positioned above the lower die assembly and capable of moving downwards to realize bag cutting.

Preferably, the edge tearing device comprises:

a bag holding member for holding the bag;

the bag taking assembly is positioned above the bag supporting component and can move downwards to press the bag supporting component tightly;

the tearing gripper assembly is used for clamping the bag and can move downwards to tear the waste edge of the bag.

Preferably, the output device includes:

a conveyor belt for conveying the blood bag to a desired position;

and the motor is connected with the conveying belt and used for providing power for the conveying belt.

Compared with the background technology, the blood bag making machine provided by the invention is used for making a blood bag finished product by the procedures of film releasing, half cutting, film drawing, spot welding, punching, pipe feeding, bag opening, high-frequency welding, bag cutting, edge tearing, outputting and the like. The two rolls of PVC film materials are stored in a buffer area for a subsequent film pulling station after being unwound by a film unwinding motor, the two films are orderly combined into one after correction and static removal and dust removal processes, the two films which are overlapped are cut by half cutting to facilitate the tearing of a finished product, the film pulling is driven by power of linear motion, in order to prevent the two films from being staggered, the spot welding is adopted to weld at the position of the slitter edge of the blood bag in a spot welding and correction mode, the correction is ensured to be at the position when the film is pulled, the punching is beneficial to the manufacture of the bag type, firstly, the two films which are combined into one are separated by an opening bag before the film reaches high frequency, the film and the mouth tube are beneficial to manufacture the bag by high-frequency welding when the mouth tube reaches the position, the final bag type is cut and molded by the bag cutting process, the bag type is transferred to the edge tearing process to finish the trimming and tear the slitter edge by the sucking disc, and finally the whole blood bag is sent to a conveying belt by an output process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a blood bag machine according to an embodiment of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural diagram of the film releasing device in FIG. 1;

FIG. 4 is a front view of the half-cut device of FIG. 1;

FIG. 5 is a side view of the half-cut device of FIG. 1;

FIG. 6 is a schematic diagram of the film pulling apparatus of FIG. 1;

FIG. 7 is a top plan view of the upper tube assembly of FIG. 1;

FIG. 8 is a side view of the upper tube assembly of FIG. 1;

FIG. 9 is a front view of the mouth tube delivery section of FIG. 1;

FIG. 10 is a side view of the mouth tube delivery section of FIG. 1;

FIG. 11 is a schematic view of the mouthpiece delivered in FIG. 10;

FIG. 12 is a front view of the bag opening assembly of the high frequency welding apparatus of FIG. 1;

FIG. 13 is a top view of the bag opening assembly of the high frequency welding apparatus of FIG. 1;

FIG. 14 is an exploded view of the bag opening suction cup assembly of the bag opening assembly of FIG. 13;

FIG. 15 is a schematic view of an upper die of the high frequency welding apparatus of FIG. 1;

FIG. 16 is a schematic view of a lower die of the high frequency welding apparatus of FIG. 1;

FIG. 17 is a front view of a bag cutting device of a blood bag making machine according to an embodiment of the present invention;

FIG. 18 is a top view of FIG. 17;

FIG. 19 is a front view of a tear edge device of a blood bag machine according to an embodiment of the present invention;

fig. 20 is a front view of an output device of a blood bag making machine according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides a blood bag making machine, which mainly comprises a film releasing device 100, a half-cutting device 200, a film pulling device 300, a tube feeding device 400, a spot welding device 600, a punching device 700, a bag cutting device 800, a tearing device 900 and a bag opening, outputting and high-frequency welding device 1, wherein the drawing is shown in fig. 1 and 2.

The method mainly comprises the following working processes: the two rolls of PVC film materials are respectively placed in an upper tensioning shaft and a lower tensioning shaft of the film releasing device 100, are fixed by tensioning through the tensioning shafts, are unpowered on the tensioning shafts, and are connected through a film releasing motor of the subsequent film releasing device 100; the film receiving platform between the tension shaft and the film releasing motor is used for realizing the function of film changing without stopping, when the film material of the previous roll is about to be used up, the residual film roll is pulled into the storage box and is compressed by the compression cylinder after passing through the film receiving platform, then the new roll is placed in the tension shaft, the film material is pulled onto the film releasing platform and is compressed by the front compression cylinder, the knife of the overlapping part of the front film and the rear film is cut off along the cutting groove of the compression platform, the two rolls of film are butted by the color adhesive tape, the color adhesive tape is used for detecting the joint of the two rolls of film by a detection switch in the subsequent station, and the high-frequency wave bypasses the joint part to be welded and processed as a bad bag.

After the film releasing motor releases the film, the buffer roller stores the film material in the buffer area by means of gravity, and the buffer roller is prepared for a subsequent film pulling station, so that the film material is ensured to have no tension or very small tension when the film is pulled. Because of the nature of the PVC film material, the film material is softer, and the film material is easier to stretch in the environment of 25 ℃ in the use place, so that the tension of the film material needs to be controlled.

The membrane separating and rectifying assembly is used for ensuring that two layers of membranes are orderly combined into a whole, and is further beneficial to the collection, filtration and discharge of the dust removing assembly through the treatment of the static removing fan, so that the inside of the two layers of membranes is ensured to be clean, and the GMP requirement is met. The two rolls of PVC film materials are combined into one after film releasing, deviation rectifying, static electricity removing and dust removing through the film releasing process, and enter a half-cutting device 200 for half-cutting process.

The half-cutting process mainly cuts two layers of films, and the general cutting depth is about half of the thickness of the film material, and the name is half-cutting. The main purpose of half-cutting is to conveniently tear the blood bag later, expose the M tube, collect blood, connect the sealed bag, etc. The half-cutting procedure is realized by driving a screw rod through an upper servo motor and a lower servo motor, and the half-cutting depth can be accurately regulated through servo control. The film pulling device 300 penetrates through the whole linear motion and is the power of the linear motion, and the film material with constant length is accurately conveyed to each process, including half cutting, spot welding, punching, bag opening, high frequency and bag cutting. The spot welding apparatus 600 is an auxiliary function, but is not necessarily required. The spot welding is mainly carried out on the slitter edges between blood bag bags and bags, so that the phenomena of staggered layer, deviation and the like in the film drawing process of two films are avoided, the slitter edges are cut off after the processes of punching, bag opening, high frequency and the like are carried out, the slitter edges are torn off through the edge tearing process, and the spot welding parts are also torn off along with the slitter edges. Spot welding does not affect the quality of the blood bag, but only auxiliary functions. The punching device 700 is required to ensure that the blood bag type is required because the welded joint pipe portion cannot pass through the bag and then is cut and formed, and must be performed before the bag is manufactured. The punching process is realized by driving a punching die through an air cylinder.

The bag opening procedure is to ensure that the mouth tube enters between two layers of films, thereby ensuring mouth tube welding and bag type welding. The two films are sucked through the vacuum chuck after the bag is opened at the height Zhou Boqian, so that the electrode with the mouth tube is ensured to be inserted into the middle of the two films, which is the key before high-frequency welding.

And then enters the tube feeding device 400, the tube feeding process is complex, and as the number of the blood bag mouth tubes is large, the maximum number of one bag reaches four mouth tubes and three specifications. S pipe is conveyed to the corresponding position of the electrode by a mechanism such as pipe cutting and pipe conveying; the M pipe is conveyed to the corresponding position of the electrode through an oscillator; the B pipe is the most complex, the direction needs to be identified, the detection switch is matched with the rotary cylinder to finish the process, and the B pipe is conveyed to the corresponding position of the electrode; all the mouth pipes are finally converged on the rotary table electrode, and the rotary table is driven by adopting a roller gear ring, so that the precision is high, the service life is long, the operation is stable, and the mouth pipes are ensured to be accurately conveyed into the high-frequency die.

The welding process of the high-frequency welding device 1 is a critical process, whereby a sheet of material placed between two metal plates (electrodes) is electrically heated by the medium of the material to be welded, and a subsequent high-frequency voltage is connected to the plastic sheet. The result is that: the molecules in the material begin to vibrate and the molecules rapidly move to a temperature where they heat up to melt. The two layers of materials are pressed together when passing high-frequency current, and are fused together layer by layer, so that a welded joint capable of bearing strong tensile force is formed. The high frequency process die is quite special, four bags are welded at a time through high frequency, wherein the first two bags are welded with bag heads only, the second two bags are welded with bag tails, and the two high frequency processes are integrated into one high frequency process, so that the cost is saved, and the welding effect is achieved.

The bag cutting process performed by the bag cutting device 800 is to cut a bag type welded by high frequency, the bag type welded by high frequency is larger than a theoretical bag type in order to ensure accurate cutting, and the bag cutting die is a theoretical bag type and is driven by a double-force cylinder or a hydraulic booster cylinder to realize cutting.

The edge tearing process performed by the edge tearing device 900 is to arrange the bag type, firstly, the bag in the bag cutting process is transferred to the edge tearing process through the sucking disc, and the waste edge is clamped and torn off through the edge tearing mechanism, so that the final bag type is completed. And the output station is used for conveying the bags tidied in the edge tearing process out through the sucker and the conveyor belt.

The film removing device 100 mainly includes an upper fixing shaft, a lower fixing shaft, an upper driving wheel assembly 1007, an upper buffer assembly 1008, an upper deviation rectifying assembly 1009, an upper static electricity removing and dust removing assembly 10012, a lower driving wheel assembly 10019, a lower buffer assembly 10020, a lower deviation rectifying assembly 10021 and a lower static electricity removing and dust removing assembly 10024. The upper fixed shaft is used for fixing the upper film roll 1001, the lower fixed shaft is used for fixing the lower film roll 10013, and the upper fixed shaft and the lower fixed shaft can be inflatable shafts and are unpowered.

The film material in the upper film roll 1001 passes through the upper driving and driven wheel assembly 1007, and the upper driving and driven wheel assembly 1007 is driven by the upper film unwinding motor 1006 to realize the rotation of the upper driving and driven wheel assembly 1007, so that the film material in the upper film roll 1001 is ensured to continuously pass through the upper driving and driven wheel assembly 1007; the film material in the lower film roll 10013 passes through the lower driving wheel assembly 10019, and the lower driving wheel assembly 10019 is driven by the lower film unwinding motor 10018 to rotate the lower driving wheel assembly 10019, so that the film material in the lower film roll 10013 is ensured to continuously pass through the lower driving wheel assembly 10019.

An upper buffer component 1008, an upper deviation correcting component 1009 and an upper static electricity removing and dust removing component 10012 are arranged behind the upper driving wheel component 1007 in sequence; that is, the film material in the upper film roll 1001 sequentially passes through the upper driving wheel assembly 1007, the upper buffer assembly 1008, the upper deviation correcting assembly 1009, and the upper static electricity and dust removing assembly 10012; referring to fig. 3 of the drawings, after the film material in the upper film roll 1001 passes through the upper driving wheel assembly 1007, the film material passes through the bottom of the upper buffer assembly 1008 from top to bottom, and then passes through the upper deviation correcting assembly 1009 from top to bottom; guide wheels are arranged on two sides of the top of the upper buffer assembly 1008, so that the film materials in the upper film roll 1001 are conveyed according to the running track; and the upper driven wheel assembly 1007 is located at a lateral position on top of the upper buffer assembly 1008; the upper buffer assembly 1008 can reciprocate in the vertical direction, and when the upper buffer assembly 1008 moves downwards, the film material of the upper film roll 1001 is stored in the upper buffer assembly 1008; when the upper buffer assembly 1008 moves upwards, the film materials stored in the upper buffer assembly 1008 are released, and film pulling is realized by a film pulling device, so that the film materials of the upper film roll 1001 are gradually unwound; the film passing through the upper buffer assembly 1008 enters the upper deviation rectifying assembly 1009, so that deviation rectifying can be performed in the bag width direction, and film deviation is avoided, and subsequent film combining operation is prevented from being influenced.

The arrangement of the lower driving wheel assembly 10019, the lower buffer assembly 10020, and the lower deviation rectifying assembly 10021, and the movement process of the lower film roll 10013 are similar to the arrangement of the upper driving wheel assembly 1007, the upper buffer assembly 1008, and the upper deviation rectifying assembly 1009, and the movement process of the upper film roll 1001, which are not described herein. The film material of the upper film roll 1001 and the film material of the lower film roll 10013 pass through the upper deviation correcting component 1009 and the lower deviation correcting component 10021 respectively to correct the deviation, so that the alignment of the two layers of film materials during die assembly is ensured; before the two layers of film materials are combined, respectively passing through an upper static electricity removing and dust removing assembly 10012 and a lower static electricity removing and dust removing assembly 10024 to remove static electricity and dust on the surfaces of the film materials, particularly the inner surfaces of the combined film materials; of course, in order to further improve the cleanliness of the film, the upper collection box 10011 and the lower collection box 10023 may be provided respectively to collect the impurities on the film of the two film rolls. The upper collection box 10011 and the lower collection box 10023 can be vacuum suction assemblies, and impurities such as dust, tiny particles and the like on the surfaces of the membrane materials are collected into the upper collection box 10011 and the lower collection box 10023, so that the surfaces of the two layers of membrane materials are ensured to be clean. It can be seen that the film unwinding operation for the upper film roll 1001 and the film unwinding operation for the lower film roll 10013 are completed by two independent mechanisms, and in order to achieve the reliability of the final film closing operation, the running speeds of the two independent mechanisms should be the same, and the model, the size, etc. of each component in the two independent mechanisms should be the same.

The film releasing device is arranged in the film releasing process (especially for the film material of PVC material), the film material is approximately tension-free, and can simultaneously release the film from the upper film roll and the lower film roll, the film material after film releasing can meet the film combining requirement, and the cleanliness meets the GMP related requirement.

In order to further improve the automation degree of the film unwinding device, two detection devices may be further provided to detect the residual film materials of the upper film roll 1001 and the lower film roll 10013 respectively; when the upper and lower film rolls 1001, 10013 are about to run out, the detection device can alert the operator that the film roll needs to be replaced. In order to match with the replacement of the film rolls, an upper collection box 1005 and a lower collection box 10017 are respectively arranged below the upper driving wheel assembly 1007 and the lower driving wheel assembly 10019; an upper film connecting platform 1003 is arranged on the film material running track between the upper fixed shaft and the upper driven wheel assembly 1007, and the upper film connecting platform 1003 is positioned between the upper fixed shaft and the upper driven wheel assembly 1007; similarly, a lower film receiving platform 10015 is disposed on the film running track between the lower fixed shaft and the lower driving wheel assembly 10019, and the lower film receiving platform 10015 is located between the lower fixed shaft and the lower driving wheel assembly 10019.

Referring to fig. 3 of the specification, a front upper pressing cylinder 1002 is arranged on the front side of an upper film-connecting platform 1003, a rear upper pressing cylinder 1004 is arranged on the rear side of the upper film-connecting platform 1003, and the front upper pressing cylinder 1002 and the rear upper pressing cylinder 1004 can press the upper film-connecting platform 1003 to ensure that the position of a film material in the upper film-connecting platform 1003 is fixed; similarly, a front lower pressing cylinder 10014 is disposed on the front side of the lower film receiving platform 10015, a rear lower pressing cylinder 10016 is disposed on the rear side of the lower film receiving platform 10015, and cutter grooves are disposed on both the upper film receiving platform 1003 and the lower film receiving platform 10015.

The film material of the upper film roll 1001 passes through the front upper pressing cylinder 1002, the upper film receiving platform 1003 and the rear upper pressing cylinder 1004 in turn upwards, and then continues to move upwards to the upper main driving wheel assembly 1007; when the upper film roll 1001 is replaced, firstly, the film materials remained in the upper film roll 1001 are placed in the upper collection box 1005, and at the moment, the master-slave wheel assembly 1007 consumes the film materials placed in the upper collection box 1005; then, installing a new film roll on the upper fixing shaft, pulling the film end of the new film roll to the upper film receiving platform 1003, and fixing the film end of the new film roll to the upper film receiving platform 1003 under the action of the front upper pressing cylinder 1002 and the rear upper pressing cylinder 1004; because the old upper film roll 1001 is still positioned on the upper film receiving platform 1003 at this time, the new and old two layers of film materials can be cut off at the cutter groove by using a tool knife, and the new and old two layers of film materials are stuck by using a colored adhesive tape to form a continuous film material, a color detection switch for detecting colors can be arranged in the subsequent process, and the colored adhesive tape part is taken as a waste bag to be removed; in the process of replacing the membrane material, the upper membrane-separating motor 1006 is always in a working state, so that the membrane material is conveyed at a constant speed, and then the membrane material conveyed by the upper driving wheel assembly 1007 reaches the upper buffer assembly 1008, and the membrane material is stored in the upper buffer assembly 1008; before the film is required at the subsequent film drawing station, the air cylinder of the upper buffer assembly 1008 pushes the buffer roller up, so that the film in the buffer area is in a free state (i.e. approximately in a tension-free state) relatively, the attribute of the drawn film is ensured not to be changed (mainly, the tension of the film is not changed, if the film is stretched, all subsequent processes are affected, finally, the manufactured blood bag is inaccurate in size), and after the film drawing is finished, the air cylinder is retracted, and the film conveyed by the upper film-separating motor 1006 is stored in the buffer area and is reciprocated. In addition, the replacement of the lower film roll 10013 is similar to the above process, and will not be repeated herein.

The upper deviation correcting assembly 1009 is further provided with an upper deviation correcting detecting element 10010 for detecting whether the bag width direction of the film material output by the upper buffer assembly 1008 is in a preset range; the upper deviation rectifying detection element 10010 is connected with an upper deviation rectifying assembly 1009, and the upper deviation rectifying assembly 1009 can adjust the position of the film material in the bag width direction; similarly, the lower deviation rectifying component 10021 is further provided with a lower deviation rectifying detecting element 10022 for detecting whether the bag width direction of the film material output by the lower buffer component 10020 is in a preset range; the lower deviation rectifying detection element 10022 is connected with the lower deviation rectifying assembly 10021, and the position of the film material can be adjusted in the bag width direction by the lower deviation rectifying assembly 10021.

Specifically, before the upper film roll 1001 and the lower film roll 10013 are combined together, the upper deviation rectifying component 1009 and the lower deviation rectifying component 10021 must be separately used for rectifying, so as to ensure that the film materials are neatly and cleanly combined together. The upper deviation rectifying detection element 10010 and the lower deviation rectifying detection element 10022 respectively detect the set positions of the films, the upper deviation rectifying assembly 1009 and the lower deviation rectifying assembly 10021 correct the films constantly, the two films are ensured to be combined neatly, and if the two films are not combined neatly, all the subsequent processes are meaningless. The upper and lower static and dust removing assemblies 10012 and 10024 remove static electricity from the film material in the form of ion wind, and clean room air is used, so that the air is clean and saved. After the upper and lower static electricity removing and dust removing assemblies 10012 and 10024 remove static electricity, dust, tiny particles and the like are easily collected by the upper and lower collecting boxes 10011 and 10023, so that the collection is thorough and clean. After the working procedures, the two layers of films are combined together, so that the guarantee is provided for each subsequent station. The upper deviation rectifying component 1009 and the lower deviation rectifying component 10021 may be moving cylinders for adjusting the bag width position of the film material.

For half-cut devices, the cutting board 2007, the upper half-cutter assembly 2006, and the lower half-cutter assembly 2008 are primarily comprised. The upper half cutter assembly 2006 is positioned at the upper end of the chopping block 2007 and can be used for half-cutting the PVC film positioned on the upper surface of the chopping block 2007; the lower half cutter assembly 2008 is located at the lower end of the cutting board 2007, and can half-cut the PVC film material located on the lower surface of the cutting board 2007.

In the half-cutting procedure, two layers of PVC film materials are respectively positioned on the upper surface and the lower surface of the chopping board 2007, the upper half-cutter assembly 2006 can move downwards to cut the PVC film material positioned on the upper surface of the chopping board 2007, and the cutting depth is half of the thickness of the PVC film material; similarly, the lower cutter assembly 2008 can move upward to cut the lower surface PVC film of the anvil 2007 to a depth of half the thickness of the PVC film. That is, the upper half cutter assembly 2006 and the lower half cutter assembly 2008 respectively complete half cutting operations of the PVC film on the upper surface and the lower surface of the anvil 2007; after half-cutting, the two layers of PVC membrane materials can be conveniently torn at the half-cutting position after being welded to form the blood bag, so that the use convenience of the blood bag is improved.

An upper half cutter fixing plate 2005 is arranged at the upper end of the chopping board 2007, and the upper half cutter fixing plate 2005 is used for fixing an upper half cutter assembly 2006; the upper half cutter fixing plate 2005 can be a horizontal plate, which is fixed with different numbers of upper half cutter assemblies 2006, and the cutter edges of the upper half cutter assemblies 2006 face downwards; when the upper half cutter fixing plate 2005 moves downwards, the upper half cutter assembly 2006 can be driven to synchronously move downwards, so that PVC film materials positioned on the upper surface of the chopping board 2007 are cut from top to bottom. A lower half cutter fixing plate 2009 is arranged at the lower end of the chopping block 2007, the lower half cutter fixing plate 2009 is used for fixing lower half cutter assemblies 2008, the lower half cutter fixing plate 2009 can be a horizontal plate, different numbers of lower half cutter assemblies 2008 are fixed on the horizontal plate, and the cutter edges of the lower half cutter assemblies 2008 face upwards; when the lower half cutter fixing plate 2009 moves upwards, the lower half cutter assembly 2008 can be driven to synchronously move upwards, so that the PVC film material positioned on the lower surface of the cutting board 2007 is cut from bottom to top.

In order to realize the movement of the upper and lower cutter fixing plates 2005 and 2009 in the vertical direction, an upper guide shaft 2004 may be further disposed at the upper end of the anvil 2007, the upper guide shaft 2004 may be vertically disposed, and may be in a cylindrical shape, the upper cutter fixing plate 2005 has a guide portion for cooperating with the upper guide shaft 2004, and the guide portion may be a through slot or the like; since the upper guide shaft 2004 is fixed with the anvil plate 2007, the movement trace of the upper cutter fixing plate 2005 is along the vertical direction under the guide of the upper guide shaft 2004, thereby realizing the movement trace of the upper cutter assembly 2006 along the vertical direction. Similarly, a lower guide shaft 20010 can be further arranged at the lower end of the chopping board 2007, and the lower guide shaft 20010 is vertically arranged and can be in a column shape; the lower half cutter fixing plate 2009 has a guide portion for cooperation with the lower guide shaft 20010, and the guide portion may be a through groove or the like; because the lower guide shaft 20010 and the chopping board 2007 are fixed, the motion track of the lower half cutter fixing plate 2009 is along the vertical direction under the guide action of the lower guide shaft 20010, so that the motion track of the lower half cutter assembly 2008 is along the vertical direction.

In order to ensure the knife edge level of the upper half cutter assembly 2006 and the lower half cutter assembly 2008, an upper adjusting gasket can be arranged between the upper half cutter assembly 2006 and the upper half cutter fixing plate 2005 for adjusting the levelness of the upper half cutter assembly 2006; a lower adjusting gasket is arranged between the lower half cutter assembly 2008 and the lower half cutter fixing plate 2009 and used for adjusting the levelness of the lower half cutter assembly 2008; therefore, the knife edge level and the half-cutting accuracy can be ensured.

The upper driving part can be connected with the upper half cutter fixing plate 2005 to realize the downward movement of the upper half cutter assembly 2006, and complete half cutting operation; the lower driving part can be connected to the lower half cutter fixing plate 2009 to realize the upward movement of the lower half cutter assembly 2008, so as to complete the half cutting operation.

Wherein the upper driving part may include an upper servo motor 2001, an upper speed reducer 2002, and an upper screw assembly 2003; the output shaft of the upper servo motor 2001 is arranged vertically downwards to provide power; the upper speed reducer 2002 is connected to an output shaft of the upper servo motor 2001 to achieve speed reduction, an output end of the upper speed reducer 2002 is vertically arranged downwards, the upper screw rod assembly 2003 is vertically arranged and connected to the output end of the upper speed reducer 2002, rotary motion is converted into vertical motion, and the upper half cutter fixing plate 2005 is driven to vertically move downwards to complete half cutting operation.

The lower driving part comprises a lower servo motor 20013, a lower speed reducer 20012 and a lower screw rod assembly 20011; the output shaft of the lower servo motor 20013 is vertically arranged upwards and is used for providing power; the lower speed reducer 20012 is connected to the output shaft of the lower servo motor 20013 to realize speed reduction, the output end of the lower speed reducer 20012 is vertically upwards arranged, the lower screw rod assembly 20011 is vertically arranged and connected to the output end of the lower speed reducer 20012 to convert rotary motion into vertical motion so as to drive the lower half cutter fixing plate 2009 to vertically upwards move, and half cutting operation is completed, as shown in figure 4 of the specification. Of course, the upper driving portion and the lower driving portion may be piston cylinders such as air cylinders, so as to directly drive the vertical movement of the upper half cutter fixing plate 2005 and the lower half cutter fixing plate 2009, thereby realizing half cutting operation.

To ensure the accuracy of the cutting depth, the upper and lower servo motors 2001 and 20013 may also be connected to a controller for outputting the rotation of the upper and lower servo motors 2001 and 20013, thereby controlling the half cutting depth of the upper and lower half cutter assemblies 2006 and 2008. In order to control the movement ranges of the upper half cutter assembly 2006 and the lower half cutter assembly 2008, an upper limit assembly 20015 and a lower limit assembly 20016 may be further provided, where the upper limit assembly 20015 and the lower limit assembly 20016 are respectively located at the positions of the upper half cutter fixing plate 2005 and the lower half cutter fixing plate 2009, so as to limit the movement ranges of the upper half cutter fixing plate 2005 and the lower half cutter fixing plate 2009; the half-cutting device can be further provided with a first guard plate 20017 and a second guard plate 20018, wherein the first guard plate 20017 and the second guard plate 20018 are positioned on two sides, as shown in fig. 4 and fig. 5 of the specification; the upper support plate and the lower support plate form a frame structure with the first guard plate 20017 and the second guard plate 20018, the upper guide shaft 2004, the upper half cutter fixing plate 2005, the upper half cutter assembly 2006, the chopping board 2007, the lower half cutter assembly 2008, the lower half cutter fixing plate 2009 and the lower guide shaft 20010 are arranged in the frame structure, the frame structure is arranged on the support column, and position adjustment can be realized between the frame structure and the support column through the adjusting assembly 20014. The adjusting component 20014 can be a screw rod mechanism, and the like, one end of the adjusting component 20014 is fixed on the supporting column, the other end of the adjusting component is fixed on the frame body structure, and the distance between two ends of the adjusting component 20014 can be changed by rotating a handle positioned on one side of the supporting column, so that the left and right positions of the whole frame body structure, namely the left and right positions of the upper half cutter component 2006 and the lower half cutter component 2008, are adjusted.

For the film pulling device, referring to fig. 6 of the specification, the film pulling device mainly comprises a guide shaft, a power assembly 3006, a front pressing cylinder 3002, a middle pressing cylinder 3008, a rear pressing cylinder 30013 and a plurality of holding cylinders; the guide shaft penetrates through the half-cutting, spot welding, punching, pipe feeding, bag opening, high frequency, bag cutting and other working procedure positions of the blood bag making machine, and is linear to provide film materials for all working procedures of the blood bag making machine. The front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 are located on the same plane, and after the current pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 press the film, the film is always located on the same plane and is horizontally arranged. The power component 3006 is connected with the guide shaft and is used for providing power for the guide shaft to realize the forward and backward movement of the guide shaft so as to complete the film drawing action. The front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 are respectively arranged at the front, middle and rear positions of the guide shaft, and when the guide shaft moves back and forth under the action of the power assembly 3006, the front pressing cylinder 3002, the middle pressing cylinder 3008, the rear pressing cylinder 30013 and the guide shaft synchronously move back and forth.

The front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 are similar in shape and structure, and are provided with an upper pressing block and a lower pressing block, a membrane material can pass through the upper pressing block and the lower pressing block, the upper pressing block and the lower pressing block can press the membrane material through piston cylinders such as air cylinders, namely, the membrane material is pressed in the up-down direction, and the membrane material is pulled through the front-back movement of the guide shaft. At the same time, a first holding cylinder 3001 and a second holding cylinder 3005 are provided on the front and rear sides of the front pressing cylinder 3002, a third holding cylinder 3007 and a fourth holding cylinder 30011 are provided on the front and rear sides of the middle pressing cylinder 3008, and a fifth holding cylinder 30012 and a sixth holding cylinder 30016 are provided on the front and rear sides of the rear pressing cylinder 30013, respectively; the six holding cylinders have similar shape and structure, and the film material can be pressed in the up-down direction similar to the three pressing cylinders.

In the film drawing process, the six holding cylinders are all relaxed, namely the six holding cylinders do not compress the film material, the front compressing cylinder 3002, the middle compressing cylinder 3008 and the rear compressing cylinder 30013 compress the film material synchronously, and move towards the first direction (namely the film drawing direction) under the action of the guide shaft, and at the moment, the positions of the six holding cylinders relative to the film drawing cylinders are fixed, so that film drawing is completed; after the current pressing cylinder 3002, the middle pressing cylinder 3008, the rear pressing cylinder 30013 and the guide shaft move a certain distance (typically, the distance of the width of two blood bags), the front pressing cylinder 3002, the middle pressing cylinder 3008, the rear pressing cylinder 30013 and the guide shaft stop synchronously, and the front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 relax synchronously, so that the film material is not pressed; then six holding cylinders synchronously compress the membrane material to ensure that the membrane material is at the current position, and the front compression cylinder 3002, the middle compression cylinder 3008, the rear compression cylinder 30013 and the guide shaft synchronously move towards the second direction (namely, the direction opposite to the membrane pulling direction), so that the front compression cylinder 3002, the middle compression cylinder 3008, the rear compression cylinder 30013 and the guide shaft return to the original positions; then the six holding cylinders are loosened synchronously, and the membrane material is not compressed; the film material is synchronously pressed by the pressing cylinder 2, the middle pressing cylinder 3008 and the rear pressing cylinder 30013, so that the film is continuously pulled. In the above process, the positions of the six holding cylinders are fixed all the time, and the front pressing cylinder 3002, the middle pressing cylinder 3008, the rear pressing cylinder 30013, and the guide shaft reciprocate. So set up, the power of preceding hold-down cylinder 3002, well hold-down cylinder 3008 and back hold-down cylinder 30013 is all provided by power pack 3006, has greatly saved space and cost, and can guarantee preceding hold-down cylinder 3002, well hold-down cylinder 3008 and back hold-down cylinder 30013 three synchronous operation, and then reduced the membrane material in-process risk.

In order to ensure that the position of the film material always keeps horizontal during the film drawing process, a front deviation rectifying component 3004, a middle deviation rectifying component 30010 and a rear deviation rectifying component 30015 can be also arranged; and a front deviation rectifying sensor 3003 for detecting the wide position of the film bag is further arranged at the front pressing cylinder 3002, and the front deviation rectifying sensor 3003 is connected with the front deviation rectifying component 3004, so that when the wide position of the film bag is out of the preset range, the front deviation rectifying component 3004 can rectify the film. Wherein the front correction sensor 3003 and the front correction assembly 3004 are located on the rear side of the front hold down cylinder 3002 and on the front side of the rear holding down cylinder 3005 of the front hold down cylinder 3002. The middle pressing cylinder 3008 is also provided with a middle deviation rectifying sensor 3009 for detecting the width position of the film material bag, the middle deviation rectifying sensor 3009 is connected with the middle deviation rectifying component 30010, and when the width position of the film material bag is out of a preset range, the middle deviation rectifying component 30010 can rectify the film material; the mid-correction sensor 3009 and the mid-correction assembly 30010 are located on the rear side of the mid-hold cylinder 3008 and on the front side of the rear holding cylinder 30011 of the mid-hold cylinder 3008. The rear pressing cylinder 30013 is also provided with a rear deviation rectifying sensor 30014 for detecting the width position of the film material bag, the rear deviation rectifying component 30015 is connected with the rear deviation rectifying sensor 30014, and when the width position of the film material bag is out of a preset range, the rear deviation rectifying component 30015 can rectify the film material; wherein the rear correction sensor 30014 and the rear correction assembly 30015 are located on the rear side of the rear hold-down cylinder 30013 and on the front side of the rear hold-down cylinder 30016 of the rear hold-down cylinder 30013. In short, the front deviation rectifying component 3004, the middle deviation rectifying component 30010 and the rear deviation rectifying component 30015 rectify the film materials at different positions respectively, and are preferably arranged at the rear sides of different pressing cylinders (a front pressing cylinder 3002, a middle pressing cylinder 3008 and a rear pressing cylinder 30013) and positioned in front of a rear side holding cylinder corresponding to the pressing cylinders; the first holding cylinder 3001, the front pressing cylinder 3002, the front deskew sensor 3003, the front deskew assembly 3004, and the rear holding cylinder 3005 may be considered a first set of film pulling modules; the third holding cylinder 3007, the intermediate pressure cylinder 3008, the intermediate correction sensor 3009, the intermediate correction assembly 30010, and the fourth holding cylinder 30011 may be considered a second set of draw film modules; the fifth holding cylinder 30012, rear hold down cylinder 30013, rear deskew sensor 30014, rear deskew assembly 30015, and sixth holding cylinder 30016 may be considered a third set of film pulling modules that function in a similar manner as set up; the front and middle correction assemblies 3004, 30010, 30015 are similarly shaped and configured; meanwhile, the front correction sensor 3003, the middle correction sensor 3009, and the rear correction sensor 30014 are similar in shape and configuration and function. The front deviation rectifying component 3004, the middle deviation rectifying component 30010 and the rear deviation rectifying component 30015 can be cylinders used for adjusting the width direction of the film material bag, and the front deviation rectifying sensor 3003, the middle deviation rectifying sensor 3009 and the rear deviation rectifying sensor 30014 can be infrared sensors or ultrasonic sensors and the like.

By arranging the front deviation rectifying assembly 3004, the middle deviation rectifying assembly 30010 and the rear deviation rectifying assembly 30015, the film material can be ensured to be subjected to bag width direction adjustment after each film drawing, so that the film drawing reliability is ensured; because the PVC membrane material is particularly a PVC membrane material, the PVC membrane material is soft and relatively heavy, the stretching and the drooping of the membrane material are easy to cause, all working procedures (half cutting, spot welding, punching, high frequency, bag cutting and the like) between the membrane pulling processes are required to be supported, otherwise, the positions of all working positions are uncertain, and repeated adjustment is required. In particular, the seamless connection is realized as much as possible in the process of high frequency in and out, and the film material needs to be ensured to be on the same supporting surface. Therefore, the three groups of pressing cylinders (the front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013) and the deviation rectifying assembly are adopted, so that the yield of blood bags can be remarkably improved. Because of the special structure of the bag cutting, a clamping hand 30017 can be arranged, the clamping hand 30017 is connected with the guide shaft and is arranged at the rear end of the rear pressing cylinder 30013, the clamping hand 30017, the front pressing cylinder 3002, the middle pressing cylinder 3008 and the rear pressing cylinder 30013 can synchronously press the film material, and the film drawing process is realized under the action of the power component 3006; the specific arrangement of the clamping hand 30017 may be similar to the three groups of pressing cylinders described above; the clamping hand 30017 and the guide shaft can be detachably connected, and the clamping hand 30017 can be separated from the membrane material by pushing the cylinder 30018. The pushing cylinder 30018 may be a piston cylinder such as an air cylinder, so as to ensure that the clamping hand 30017 is separated from the film.

So set up, utilize tong 30017 to draw the membrane in step, both can bypass and cut the bag mould, can also conveniently change the specification. The clamping hand 30017 can complete the film pulling action through the cooperation of the clamping power part and the clamping hand executing part, the clamping hand executing part reaches the film adding position and is tightened, then the clamping hand executing part is conveyed forward along with the film pulling, the bag cutting action is matched when the clamping hand executing part reaches the position, and the clamping hand executing part is loosened after the completion and returns to the original position along with the film pulling. The clamping hand 30017 can adopt a quick-assembly structure, different clamping hands can be switched according to different specifications, and only the clamping hand 30017 is required to be manually rotated by 90 degrees to be taken down, so that any tool is not required, and the safety of operation in a clean room is greatly reduced; the installation of the specification-changing position is not needed, and the clamping hand 30017 can be fixed on the guide shaft in a positioning pin type installation mode, so that the installation accuracy is ensured, and the installation is convenient and safe.

For the upper pipe device, as shown in the specification of fig. 7 and 8; mainly comprises a turntable seat 4005, a gear and gear ring assembly 4006, a rotary bracket 4007 and a pushing electrode assembly 4008; the turntable seat 4005 is fixed in position and can be regarded as a base.

The gear ring assembly 4006 is rotatably mounted to the turntable base 4005; meanwhile, the high-frequency welding assembly 1 and at least two mouth tube conveying parts form an annular structure, and the rotary table seat 4005 is positioned in the middle of the annular structure; the mouth tube conveying portion may specifically be a first mouth tube conveying portion 4002, a second mouth tube conveying portion 4003, and a third mouth tube conveying portion 4004, and the first mouth tube conveying portion 4002, the second mouth tube conveying portion 4003, and the third mouth tube conveying portion 4004 are capable of conveying mouth tubes of different size types, respectively. The power source of the gear-ring assembly 4006 may be an electric motor or the like.

The high frequency welding assembly 1, the first mouth tube conveying part 4002, the second mouth tube conveying part 4003 and the third mouth tube conveying part 4004 are mutually separated by 90 degrees to form a round shape, and the rotary table seat 4005 is positioned in the middle of the round shape, as shown in fig. 7 of the specification.

The gear-ring assembly 4006 is provided with a rotary bracket 4007, and the gear-ring assembly 4006 and the rotary bracket 4007 can rotate synchronously; the rotary frame 4007 is provided with a pushing electrode assembly 4008, and the electrode 2 is fixed to the pushing electrode assembly 4008; the rotary bracket 4007 rotates synchronously with the pushing electrode assembly 4008, and the pushing electrode assembly 4008 can push out the electrode 2 towards the outer side, and the end part of the electrode 2 is used for sleeving an oral tube; under the action of the pushing electrode assembly 4008, the electrode 2 moves toward the outside, so that the electrode 2 is sleeved with the mouth tube. The number of the rotary frames 4007 may be four, and when the gear ring assembly 4006 rotates 90 ° to stop, the high frequency welding assembly 1, the first mouth tube conveying portion 4002, the second mouth tube conveying portion 4003 and the third mouth tube conveying portion 4004 each have one rotary frame 4007 for respectively realizing the welding and the pipe feeding operations, as shown in fig. 1 of the specification. Obviously, each push electrode assembly 4008 is provided with a plurality of electrodes 2 for insertion into different oral tubes or a different number of oral tubes.

In the pipe feeding process, referring to fig. 7 of the specification, the gear ring assembly 4006 provides power for the pipe feeding process, and for one rotary bracket 4007, the rotary bracket passes through the first pipe feeding portion 4002, the second pipe feeding portion 4003, the third pipe feeding portion 4004 and the high-frequency welding assembly 1 in sequence, and when the rotary bracket rotates to the first pipe feeding portion 4002, the second pipe feeding portion 4003, the third pipe feeding portion 4004 and the high-frequency welding assembly 1, the rotary bracket stops for a preset time, and sequentially or simultaneously passes through three pipe feeding processes, and each pipe feeding process has different electrodes 2 sleeved with a pipe; after all electrodes 2 are completely arranged, the electrodes are rotated to the high-frequency welding assembly 1, and the mouth tube and the PVC membrane material are welded together to form a blood bag.

The first orifice pipe conveying portion 4002, the second orifice pipe conveying portion 4003 and the third orifice pipe conveying portion 4004 may be provided with orifice pipes of different sizes or types on the electrode 2 according to actual needs, and the specific shape and configuration of the first orifice pipe conveying portion 4002, the second orifice pipe conveying portion 4003, the third orifice pipe conveying portion 4004 and the high frequency welding assembly 1 may be referred to the prior art.

It should be noted that, according to actual needs, the number of the mouth tube conveying parts may be other, and not limited to the three mouth tube conveying parts described herein, and the mouth tube conveying parts of other numbers and the high-frequency welding assembly 1 need to enclose into an annular structure, so that the turntable 4005 may rotate to different stations to complete different operations.

More specifically, the high-frequency welding assembly 1 and the first mouth tube conveying portion 4002 which are arranged at intervals of 90 ° are provided with a pushing electrode assembly cylinder 40011, and the pushing electrode assembly cylinder 40011 is fixedly connected with a turntable base 4005; the push electrode assembly cylinder 40011 is coupled to the push electrode assembly 4008 for pushing the push electrode assembly 4008 back into position. Referring to fig. 8 of the specification, in a case where a mouth tube is required for both the head and the tail of a blood bag at the first mouth tube conveying part 4002, a push electrode assembly cylinder 40011 is used to push the push electrode assembly 4008 to a desired position for a tube feeding operation; in the case where the mouth tube is required for the head of the blood bag at the second mouth tube conveying part 4003 and the third mouth tube conveying part 4004 (the mouth tube is not required for the tail of the blood bag), the push electrode assembly cylinder 40011 does not need to be provided at the second mouth tube conveying part 4003 and the third mouth tube conveying part 4004. Of course, the push electrode assembly cylinder 40011 may also be provided at other desired port tube delivery portions.

When the rotating frame 4007 drives the electrode pushing assembly 4008 to rotate to the position of the high-frequency welding assembly 1, the two layers of PVC films need to be opened by the action cooperation of the high-frequency welding assembly 1 so as to realize that the electrode pushing assembly 4008 drives the electrode 2 to be inserted between the two layers of PVC films, and the process needs to be realized by pushing the electrode pushing assembly 4008 by the electrode pushing assembly cylinder 40011.

The rotary upper tube device of the invention can also be provided with a rotary part fixing disk 40010, and the push electrode assembly 4008 is in sliding connection with the rotary part fixing disk 40010; wherein the turntable base 4005, the rotating part fixing plate 40010 and the electrode pushing assembly cylinder 40011 are fixed, and the rotating bracket 4007, the electrode pushing assembly 4008 and the electrode 2 synchronously rotate; in order to prevent the pushing electrode assembly 4008 from separating from the rotating portion fixing plate 40010 during the rotation process, a limiting rail is disposed on the surface of the rotating portion fixing plate 40010, the pushing electrode assembly 4008 slides on the limiting rail with a fixed position, and the limiting rail should be in an arc shape.

When the pushing electrode assembly 4008 rotates to the high frequency welding assembly 1, since the pushing electrode assembly 4008 is pushed away from the rotating part fixing plate 40010 by the pushing electrode assembly cylinder 40011 (for realizing the insertion port pipe is needed for both the bag head and the bag tail of the blood bag), an opening is arranged at the limit track, the position of the opening is positioned at one side where the pushing electrode assembly cylinder 40011 is arranged, and under the action of the pushing electrode assembly cylinder 40011, the pushing electrode assembly 4008 can be separated from the limit track along the opening, so that the insertion port pipe for the bag head and the bag tail of the blood bag is realized.

For the high-frequency welding assembly 1, an electrode withdrawing cylinder 40012 is also arranged, the electrode withdrawing cylinder 40012 is used for withdrawing the welded socket pipe electrode from the welded bag-shaped mouth pipe, and an electrode withdrawing lifting cylinder 40013 can be arranged at the bottom of the electrode withdrawing cylinder 40012 so as to realize the lifting of the electrode withdrawing cylinder 40012; after the high-frequency welding is finished, the electrode withdrawing cylinder 40012 is lifted by the electrode withdrawing lifting cylinder 40013, then the electrode withdrawing cylinder 40012 extends forwards, at the moment, the electrode pushing assembly 4008 is in an extending state, and the electrode withdrawing cylinder 40012 blocks the movement track of the electrode pushing assembly 4008 which is withdrawn to the limit track; when the electrode withdrawing cylinder 40012 withdraws the oral tube from the blood bag, the electrode withdrawing lifting cylinder 40013 drives the electrode withdrawing cylinder 40012 to descend to the position shown in fig. 8 of the specification, and at the moment, the electrode pushing assembly 4008 can retract to the limit track of the rotating part fixing disc 40010, so that the production of the blood bag is continuously completed.

For the mouth tube conveying part, the concrete setting mode is shown in the specification of fig. 9 and fig. 10; the device mainly comprises a conveying mechanism 5002, a top mouth tube cylinder 5004, a detection part, a mouth tube rotating seat 50014 and a clamping assembly. The conveying mechanism 5002 can be direct vibration, a storage bin 5001 can be arranged above the rear end of the conveying mechanism, an orifice pipe 3 is arranged in the storage bin 5001, the structure of the orifice pipe 3 is shown in an attached drawing 11 of the specification, and the front end and the rear end of the orifice pipe are different; the mouth tube 3 placed in the stock bin 5001 falls into the conveying mechanism 5002 and moves forward under the action of the conveying mechanism 5002; the front end of the mouth tube conveying part is the left end taking the figure 9 of the specification as an example; the rear end herein refers to the right end as illustrated in fig. 9 of the specification. A top opening tube cylinder 5004 is further arranged above the conveying mechanism 5002, the top opening tube cylinder 5004 is arranged at the front end of the conveying mechanism 5002, and the top opening tube cylinder 5004 can move downwards; when the continuous mouth tube 3 moves towards the front end of the conveying mechanism 5002, the mouth tube pushing cylinder 5004 moves downwards, so that the subsequent mouth tube 3 can be propped against, and two adjacent mouth tubes 3 are prevented from being contacted; i.e. to avoid the forward transport of the subsequent mouth tube 3 for a short time, thereby ensuring that the two mouth tubes 3 have a certain spacing. The purpose of this arrangement is that: if there is friction between the two mouth pipes 3, the success rate of clamping the mouth pipes 3 by the subsequent clamping assembly will be reduced, and the production efficiency will be affected.

The detecting part is positioned at the front end of the conveying mechanism 5002 and is used for detecting whether the front-back direction of the mouth tube 3 is correct or not; since the mouth tube 3 has front and rear ends having different shapes and structures, it is determined by the detection unit whether the mouth tube 3 at the front end of the conveying mechanism 5002 is in the correct direction. The mouth tube rotating seat 50014 is located below the front end of the conveying mechanism 5002, and the mouth tube rotating seat 50014 is connected with the detecting portion, when the detecting portion detects that the front-back direction of the mouth tube 3 is incorrect, the mouth tube rotating seat 50014 can drive the mouth tube 3 to lift and rotate 180 degrees, so that the front-back direction of the mouth tube 3 is correct. A clamping assembly is further provided above the conveying mechanism 5002 and at the front end of the mouth tube rotating seat 50014 for clamping and inserting the mouth tube 3 in the correct direction in the front-rear direction into the electrode 2.

In the pipe feeding process, firstly, the mouth pipes 3 in the storage bin 5001 drop to the conveying mechanism 5002 at random, the conveying mechanism 5002 conveys the mouth pipes 3 forwards, when the mouth pipes 3 are positioned below the mouth pipe jacking cylinder 5004, the mouth pipe jacking cylinder 5004 is used for dividing two adjacent mouth pipes 3 into a certain interval, and then the detecting part judges whether the mouth pipes 3 positioned at the front end of the conveying mechanism 5002 are positioned in the correct direction; if the front-back direction of the mouth tube 3 is incorrect, the mouth tube rotating seat 50014 drives the mouth tube 3 to lift and rotate 180 ° so that the front-back direction of each mouth tube 3 is correct; finally, the electrode 2 is inserted into the mouth tube 3 with the correct front-back direction by the clamping assembly.

The detection part comprises an orifice tube fixing seat 50015, a laser detection switch 5008 and a reflecting plate 5009; the mouth tube fixing seat 50015 is located at the front end of the conveying mechanism 5002 and is used for supporting the mouth tube 3, the mouth tube fixing seat 50015 has a gap, and the laser detection switch 5008 is matched with the reflecting plate 5009 for use; in the detection process, the laser detection switch 5008 emits laser, the laser passes through the mouth tube 3 through the gap of the mouth tube fixing seat 50015, and the laser detection switch 5008 judges whether the direction of the mouth tube 3 is correct according to the fed-back laser intensity; if the direction of the mouth tube 3 is incorrect, the mouth tube rotating seat 50014 is lifted by the lower lifting cylinder 5006 connected with the mouth tube rotating seat 50014, and the rotating cylinder 5005 drives the mouth tube rotating seat 50014 to rotate, so that the direction of the mouth tube 3 is adjusted, and the correct direction of the mouth tube 3 is ensured.

In order to further improve the clamping success rate of the clamping assembly, an orifice tube moving cylinder 5007 is further arranged at the front end of the clamping assembly and used for moving the orifice tube 3 which is currently conveyed forwards; when the mouth tube 3 reaches the mouth tube fixing seat 50015, the mouth tube pushing cylinder 5004 props against the subsequent mouth tube 3 and does not convey forward, and the mouth tube moving cylinder 5007 moves forward for a certain distance, so that a gap is ensured between the mouth tube and the subsequent mouth tube 3, and the contact between two adjacent mouth tubes 3 is avoided; since the end surface of the mouth tube 3 is sometimes cut unevenly, and the mouth tube 3 has a certain curvature, if two adjacent mouth tubes 3 are in contact friction, the success rate of clamping the clamping assembly will be significantly reduced, and if the mouth tube 3 does not have the above phenomenon, the mouth tube moving cylinder 5007 does not need to be provided.

The clamping assembly comprises a clamping hand 50010, a clamping hand cylinder 50011, a clamping hand up-and-down moving cylinder 50012 and a clamping hand left-and-right moving cylinder 50013; the clamping hand 50010 may include two clamping arms, and the clamping cylinder 50011 can control clamping and loosening of the two clamping arms. When the direction of the mouth tube 3 is correct, the clamp hand up-and-down moving cylinder 50012 drives the clamp hand cylinder 50011 to move downwards, and when the required position is reached, the clamp hand cylinder 50011 stops moving downwards, the clamp hand cylinder 50011 drives the clamp hand 50010 to clamp the mouth tube 3, and then the clamp hand up-and-down moving cylinder 50012 resets.

One hand up-and-down moving cylinder 50012 and one hand left-and-right moving cylinder 50013 can be connected with two hand 50010, as shown in fig. 10 of the specification, so as to improve the production efficiency; if the number of the mouth pipes 3 is large, the left and right positions of the grip 50010 can be switched by moving the cylinder 50013 left and right, thereby improving the production efficiency. The grip 50010, the grip cylinder 50011, the grip up-and-down moving cylinder 50012, and the grip left-and-right moving cylinder 50013 may also be connected to the electric cylinder 16, so as to realize overall movement, and all the above components may control the strokes through a PLC. The electric cylinder 16 is located above the hand-grip left-right moving cylinder 50013 and can move forward to effect insertion of the port tube 3 gripped by the gripping assembly into the electrode 2. In the step of inserting the mouth tube 3 into the electrode 2, in order to ensure the position of the electrode 2 to be fixed, the electrode 2 can be clamped by a lower top electrode cylinder 50017 and an upper electrode cylinder 50018, as shown in fig. 9 of the specification; the lower top electrode cylinder 50017 moves upwards, the upper electrode cylinder 50018 moves downwards, the electrode 2 is clamped between the lower top electrode cylinder 50017 and the upper electrode cylinder 50018, and then the mouth tube 3 clamped by the clamping assembly is inserted into the electrode 2; by the arrangement, the success rate of the interface tube 3 is remarkably improved, and the production efficiency is improved.

A photoelectric detection switch 50020 is also arranged below the electrode 2 and is used for detecting whether the electrode 2 is provided with a mouth tube 3 or not; that is, if the clamping assembly does not insert the mouth tube 3 into the electrode 2 according to the preset action, the alarm portion connected to the photoelectric detection switch 50020 will alarm; if the mouth tube 3 is not inserted into the electrode 2, a sparking phenomenon occurs in the subsequent welding process, which brings serious consequences, so that the photoelectric detection switch 50020 can be utilized to automatically detect whether the mouth tube 3 is inserted into the electrode 2, thereby realizing automatic production.

The arrangement mode of the high-frequency welding device 1 comprises a separation assembly, an upper die 70 and a lower die 80, wherein the separation assembly can separate PVC film materials which are laminated together, and bag opening is realized, so that a pipe and the like can be conveniently inserted. The two layers of membrane materials inserted with the mouth tube extend between the upper die 70 and the lower die 80, and the high-frequency welding operation is completed under the die closing action of the upper die 70 and the lower die 80, so that the blood bag is manufactured. Wherein, the upper die 70 and the lower die 80 are provided with head welding modules, and when the upper die 70 and the lower die 80 are closed, the head of the blood bag is welded; the upper die 70 and the lower die 80 are provided with tail welding modules, and when the upper die 70 and the lower die 80 are matched, the tail of the blood bag is welded; and the head welding module and the tail welding module are respectively positioned at different positions, as shown in the accompanying drawings 15 and 16 of the specification.

When the upper die 70 and the lower die 80 are closed, the head of at least one group of blood bags is welded, and the tail of at least one group of blood bags is welded; with the PVC film moving forward, the upper and lower molds 70 and 80 are again clamped, the tail of the previously head welded blood bag is welded when the mold is clamped this time, and the head of at least one group of blood bags is welded, and the tail is welded when the next mold is clamped. So reciprocally, once the compound die can accomplish the welding of head and afterbody to different blood bags simultaneously, reduces the cost of mould, and reduces to one set by two sets of high frequency generator originally, can accomplish the production of blood bag, and high cycle welding set's length also can correspondingly shorten, reduces the factory building area.

For the separation assembly, as shown in the accompanying drawings 12 to 14 of the specification, the device comprises a membrane separation plate 13, an upper bag opening assembly, a lower bag opening assembly, an upper push-pull cylinder, a lower push-pull cylinder, an upper lifting cylinder and a lower lifting cylinder; the upper bag opening assembly can be specifically a first upper bag opening assembly 1 and a second upper bag opening assembly 4, and the first upper bag opening assembly 1 and the second upper bag opening assembly 4 are respectively arranged on two sides of the membrane materials; the lower bag opening assembly is specifically a first lower bag opening assembly 7 and a second lower bag opening assembly 10, and the first lower bag opening assembly 7 and the second lower bag opening assembly 10 are respectively arranged on two sides of the film material.

When two layers of PVC membrane materials reach the high-frequency welding device, the membrane separating plate 13 firstly separates the tail parts of the two layers of membrane materials, and is favorable for the first upper bag opening assembly 1, the second upper bag opening assembly 4, the first lower bag opening assembly 7 and the second lower bag opening assembly 10 to be adsorbed on the surfaces of the membrane materials.

The first upper bag opening assembly 1 is connected with the first upper push-pull cylinder 2, the second upper bag opening assembly 4 is connected with the second upper push-pull cylinder 5, the first lower bag opening assembly 7 is connected with the first lower push-pull cylinder 8, and the second lower bag opening assembly 10 is connected with the second lower push-pull cylinder 11; the first upper push-pull cylinder 2 can realize the left-right movement of the first upper bag opening assembly 1, the second upper push-pull cylinder 5 can realize the left-right movement of the second upper bag opening assembly 4, the first lower push-pull cylinder 8 can realize the left-right movement of the first lower bag opening assembly 7, and the second lower push-pull cylinder 11 can realize the left-right movement of the second lower bag opening assembly 10.

In order to realize the up-and-down movement of the first upper bag opening assembly 1, the second upper bag opening assembly 4, the first lower bag opening assembly 7 and the second lower bag opening assembly 10 respectively, the first upper push-pull cylinder 2 is connected with the first upper lifting cylinder 3, the second upper push-pull cylinder 5 is connected with the second upper lifting cylinder 6, the first lower push-pull cylinder 8 is connected with the first lower lifting cylinder 9, and the second lower push-pull cylinder 11 is connected with the second lower lifting cylinder 12; that is, the first upper bag opening assembly 1, the second upper bag opening assembly 4, the first lower bag opening assembly 7 and the second lower bag opening assembly 10 are respectively provided with a push-pull cylinder and a lifting cylinder, so that the up-down and left-right movement is realized.

In the bag opening process, a first upper push-pull cylinder 2, a second upper push-pull cylinder 5, a first lower push-pull cylinder 8 and a second lower push-pull cylinder 11 respectively send a first upper bag opening assembly 1, a second upper bag opening assembly 4, a first lower bag opening assembly 7 and a second lower bag opening assembly 10 to the appointed position of the tail end of the film material, then the first upper lifting cylinder 3, the second upper lifting cylinder 6, the first lower lifting cylinder 9 and the second lower lifting cylinder 12 act to enable the first upper bag opening assembly 1, the first lower bag opening assembly 7, the second upper bag opening assembly 4 and the second lower bag opening assembly 10 to be combined, and the upper layer film and the lower layer film are respectively sucked through a vacuumizing mode, at this time, the first upper lifting cylinder 3, the second upper lifting cylinder 6, the first lower lifting cylinder 9 and the second lower lifting cylinder 12 act to the original position to separate the two layers of film materials, so that the electrode assembly is beneficial to enter between the two layers of film materials, and after the electrode assembly is in place, the first upper push-pull cylinder 2, the second upper push-pull cylinder 5, the first lower push-pull cylinder 8 and the second lower push-pull cylinder 11 return to the original position; and the bag opening action is completed by reciprocating in this way.

For the separation assembly, the separation assembly can also be respectively arranged on an upper die 70 and a lower die 80, wherein the upper die 70 is provided with an upper die sucker 71, and the lower die 80 is provided with a lower die sucker 84, as shown in fig. 5 and 6 of the specification; when two layers of film materials extend between the upper die 70 and the lower die 80, the upper die sucker 71 sucks the upper film material and the lower die sucker 84 sucks the lower film material through the die clamping action of the upper die 70 and the lower die 80; that is, before high-frequency welding, the upper die 70 and the lower die 80 are combined and separated, two layers of film materials are sucked through the upper die sucking disc 71 and the lower die sucking disc 84 respectively, after the electrode assembly is inserted in place, the vacuum pump gas-cutting film materials return to the combined state, and then high-frequency welding is performed.

Wherein, the upper die suction cup 71 can be arranged at the rear end of the head welding module, the lower die suction cup 84 is arranged at the rear end of the tail welding module, and the head welding module is arranged at one end of the film material inlets of the upper die 70 and the lower die 80; referring to fig. 15 and 16 of the specification, the left side in the drawing is the front end, the right side in the drawing is the rear end, and the membrane moves from left to right, i.e. moves from front to back. When the film enters between the upper die 70 and the lower die 80 from left, the separation of the two layers of films can be realized under the action of the upper die sucker 71 and the lower die sucker 84.

The number of the head welding modules and the number of the tail welding modules can be two, so that the heads of two blood bags and the tails of the two blood bags can be welded at one time; of course, the number of head and tail welding modules of the upper and lower molds 70 and 80 may be other according to actual needs. In addition, the head welding module and the tail welding module are respectively and horizontally arranged on the upper die 70 and the lower die 80, as shown in fig. 15 and fig. 16 of the specification, so as to realize that the upper and lower layers of film materials can be welded to form a blood bag by running along the horizontal direction. That is, after the head portions of the two blood bags are welded, the two blood bags can be moved to the position of the tail welding module in the horizontal direction, and the welding of the tail portions can be completed under the welding operation of the upper die 70 and the lower die 80, so that the blood bags are obtained after the two welding.

The above-described first upper bag-opening assembly 1, second upper bag-opening assembly 4, first lower bag-opening assembly 7 and second lower bag-opening assembly 10 are similar in shape and configuration, and a specific embodiment will be given herein only by way of example of the first upper bag-opening assembly 1. Referring to fig. 14 of the drawings, the cam sleeve comprises a cam sleeve fixing plate 14, a cam sleeve 15, a sucker fixing frame 16, a clamping device 17 and a plurality of suckers 18; the sucker fixing frame 16 is provided with a plurality of suckers 18, the sucker fixing frame 16 and the clamping device 17 are taken as a whole, quick disassembly can be realized between the cam sleeve 15 and the clamping device 17, the cam sleeve 15 is fixed on the cam sleeve fixing plate 14, the clamping device 17 is fixed on the sucker fixing frame 16, and when the sucker fixing frame 16 needs to be replaced, locking and loosening can be completed only by rotating the clamping device 17; a fixing pin can be further arranged to integrally fix the sucker fixing frame 16 and the clamping device 17 to the cam sleeve 15; wherein the gripper 17 may be a thumb gripper; of course, the specific shape and configuration of the cam sleeve fixing plate 14, the cam sleeve 15, the suction cup fixing frame 16, the clamper 17 and the suction cup 18 described above can be referred to the prior art.

In order to avoid drooping of the unwelded parts of the blood bag during the welding process, the upper mold 70 is provided with a first support plate 72 and a second support plate 73, and the lower mold 80 is provided with a first spring assembly 85 and a second spring assembly 86; the first support plate 72 is located at a position other than the head welding module, preferably below the head welding module, and may be located at a position of the bag body; the position of the first spring assembly 85 is disposed opposite to the position of the first support plate 72; when the upper die 70 and the lower die 80 are die-bonded, the first spring assembly 85 and the first support plate 72 are clamped between the non-head positions of the blood bag. Similar to the above, the second support plate 73 is located at a position other than the tail welding module, preferably at a middle position of the bag body; the second spring assembly 86 is disposed opposite to the second support plate 73; when the upper die 70 and the lower die 80 are die-bonded, the second spring assembly 86 and the second support plate 73 are clamped in the non-tail position of the blood bag.

Referring to fig. 15 and 16 of the drawings, a first support plate 72 and a second support plate 73 are positioned on the upper mold 70 to mainly serve as a support. The first spring assembly 85 and the second spring assembly 86 are located on the lower die 80 and also play a supporting role, so that membrane material drooping phenomenon after high-frequency welding is prevented, and the quality of subsequent procedures, even blood bags, is influenced. The first spring assembly 85 and the second spring assembly 86 are always in the film supporting position, when the film reaches the height Zhou Bohou, the upper die 70 is firstly moved in place no matter the bag is opened or welded, then the lower die 80 is moved, the first spring assembly 85 and the second spring assembly 86 are compressed, the upper die 70 and the lower die 80 are closed, the lower die 80 is preferentially returned to the original position after the bag is opened or welded, the first spring assembly 85 and the second spring assembly 86 still support the film, the film is prevented from being pulled down, and thereafter the upper die 70 is returned to the original position. The first support plate 72, the second support plate 73, the first spring assembly 85 and the second spring assembly 86 are matched to achieve a supporting effect in sequence.

In order to realize the support to the blood bag, the upper and lower sets of support assemblies can be completed, namely, the upper and lower sets of support assemblies are independent of the upper die 70 and the lower die 80 and act through piston cylinders such as air cylinders respectively, and the arrangement does not need to limit the action sequence of the upper die 70 and the lower die 80, so that the process of producing the blood bag is more flexible.

For the shape structure of the bag cutting device, as shown in fig. 17 and fig. 18 of the specification, the bag welded by high frequency is conveyed to the bag cutting process through a film pulling clamp, firstly, the lower die assembly 6004 is lifted to be in the same horizontal plane with the film material, so that the film material is supported; the supporting component 6005 supports the lower die component 6004, then the upper die component 6001 moves downwards under the guiding of the guiding component 6002 through an air cylinder or a hydraulic cylinder, and cuts out a complete bag, after cutting, the upper die component 6001 is lifted, the bag supporting component 6006 moves to a bag cutting station, and the bag is sent to the next process to tear the edge process through a vacuum chuck, so that the operation is repeated. During cutting, the film is located between the upper die assembly 6001 and the lower die assembly 6004, and cutting of the film is achieved through relative movement of the upper die assembly 6001 and the lower die assembly 6004. In addition, the moving assembly 6007 can achieve an overall movement of the pouch cutting station for fine tuning of the pouch cutting position. The first side guard 6008 and the second side guard 6009 function as supports.

For the shape structure of the edge tearing device, as shown in fig. 19 of the specification, the bag supporting component of the bag cutting process sends the bag to the bag supporting component 7002 in the edge tearing process, the bag supporting component 7002 is provided with a sucker, the bag is sucked by vacuum, then the bag taking component 7003 reaches a designated position and descends to the bag supporting component 7002, the edge tearing clamp component 7001 ascends to the designated position, the clamp clamps the waste edges of the bag, then the waste edges are torn by downward movement, the sucker is distributed in the bag taking component 7003, and the final bag is sucked and sent to the next process output process belt, so that the bag is reciprocated. It can be seen that the tear edge grip assembly 7001 can be disposed on and slide along a fixed angled plate to tear off the slitter edge. The tear edge gripper assembly 7001 may employ a manipulator or the like in the prior art, as long as it can grip the slitter edge of the bag.

With respect to the shape structure of the output device, as shown in fig. 20 of the specification, the blood bags sent after the edge tearing process are sent and placed on the conveying belt 8001, and the conveying belt 8001 can be horizontally arranged; the conveyor belt 8001 is connected to the motor 8002, and is rotated by the motor 8002 to be conveyed backward at regular time, and the output carriage 8003 is a support member for the output process. Of course, according to actual needs, the specific setting manner of the output device may be other, which will not be described herein.

The blood bag making machine provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (10)

1. A blood bag making machine, comprising:

the film releasing device is used for releasing the films of the two layers of film materials;

the film pulling device is used for pulling the film material to realize that the film material is positioned at a corresponding station;

The half-cutting device is arranged at the rear end of the film releasing device and used for half-cutting the two layers of film materials after being released by the film releasing device;

the spot welding device is arranged at the rear end of the half-cutting device and used for ensuring that two layers of film materials are overlapped reliably;

the punching device is arranged at the rear end of the spot welding device and used for punching the film;

the bag opening device is used for opening bags of two layers of film materials so as to enable the electrode inserted with the mouth tube to extend into the space between the film materials;

a tube feeding device for inserting the electrode into the tube;

the high-frequency welding device is used for welding the mouth tube and the two layers of membrane materials to obtain a blood bag;

the bag cutting device is arranged at the output end of the high-frequency welding device and used for cutting and forming the bag;

the edge tearing device is used for removing the slitter edges of the cut and formed blood bags;

an output device for outputting the finally formed blood bag;

the pipe feeding device (400) comprises:

a fixed-position turntable base (4005);

the rotary gear ring assembly (4006) is arranged on the rotary table seat (4005), and the rotary gear ring assembly (4006) is arranged between the high-frequency welding assembly (4001) and an annular structure formed by at least two mouth tube conveying parts for conveying mouth tubes;

A rotary bracket (4007) which is mounted on the gear-ring assembly (4006) and can rotate synchronously with the gear-ring assembly (4006);

a pushing electrode assembly (4008) which is provided on the rotating holder (4007) and can push the electrode (2) with the orifice tube;

the gear ring assembly (4006) can be stopped at different mouth tube conveying parts to realize that mouth tubes with different sizes are positioned at different electrodes (2), and the gear ring assembly (4006) can rotate and stop at the high-frequency welding assembly (4001) to realize that the mouth tubes are welded to PVC film materials;

the film releasing device (100) comprises:

an upper fixing shaft and a lower fixing shaft for fixing the two film rolls respectively;

an upper film receiving platform and a lower film receiving platform for respectively carrying out film changing of two film rolls without stopping;

an upper driving wheel assembly (1007) and a lower driving wheel assembly (10019) for respectively passing the film materials of the two film rolls;

an upper deviation rectifying component (1009) and a lower deviation rectifying component (10021) which are respectively positioned behind the upper driving wheel component (1007) and the lower driving wheel component (10019) and are used for rectifying the deviation of the film materials of the two film rolls;

An upper buffer assembly (1008) located between the upper deviation rectifying assembly (1009) and the upper driving wheel assembly (1007), and a lower buffer assembly (10020) located between the lower deviation rectifying assembly (10021) and the lower driving wheel assembly (10019), wherein the film materials of the two film rolls are respectively conveyed along the directions from the upper fixed shaft of the film roll to the upper deviation rectifying assembly (1009) and the lower fixed shaft of the film roll to the lower deviation rectifying assembly (10021), and the upper buffer assembly (1008) and the lower buffer assembly (10020) can reciprocate along the up-down directions so as to buffer the film materials of the two film rolls in the upper buffer assembly (1008) and the lower buffer assembly (10020) respectively;

the upper static electricity removing and dust removing assembly (10012) and the lower static electricity removing and dust removing assembly (10024) are respectively positioned behind the upper deviation correcting assembly (1009) and the lower deviation correcting assembly (10021) and are used for respectively removing static electricity and dust on the surfaces of two layers of film materials to be combined;

the high-frequency welding device (1) comprises a separation assembly for separating an upper layer of film material from a lower layer of film material, and an upper die (70) and a lower die (80) for performing high-frequency welding on the upper layer of film material and the lower layer of film material to form a blood bag; wherein: the upper die (70) and the lower die (80) each include a head welding module and a tail welding module for welding the head and tail of the blood bag, respectively.

2. The blood bag machine according to claim 1, wherein,

the upper deviation correcting assembly (1009) is further provided with an upper deviation correcting detecting element (10010) for detecting whether the film width direction of the film material output by the upper buffer assembly (1008) is at a preset position or not; the upper deviation rectifying detection element (10010) is connected with the upper deviation rectifying assembly (1009), and the upper deviation rectifying assembly (1009) can adjust the position of the film material in the film width direction;

the lower deviation rectifying assembly (10021) is further provided with a lower deviation rectifying detection element (10022) for detecting whether the film width direction of the film material output by the lower buffer assembly (10020) is at a preset position or not; the lower deviation rectifying detection element (10022) is connected with the lower deviation rectifying assembly (10021), and the position of the film material can be adjusted in the film width direction by the lower deviation rectifying assembly (10021).

3. The blood bag machine of claim 1, wherein the half-cutting device (200) comprises:

cutting boards (2007);

an upper half cutter assembly (2006) positioned at the upper end of the chopping board (2007) and used for half-cutting the PVC film material positioned on the upper surface of the chopping board (2007);

the lower half cutter assembly (2008) is positioned at the lower end of the cutting board (2007) and used for half-cutting the PVC film material positioned on the lower surface of the cutting board (2007).

4. The blood bag machine of claim 1, wherein the film pulling device (300) comprises:

a connecting shaft for penetrating all the process positions of the blood bag making machine;

a power assembly (3006) connected to the connecting shaft for effecting forward and backward movement of the connecting shaft;

the front pressing cylinder (3002), the middle pressing cylinder (3008) and the rear pressing cylinder (30013) are respectively arranged at the front, middle and rear positions of the connecting shaft and used for allowing the membrane material to penetrate and pressing the membrane material; when the front pressing cylinder (3002), the middle pressing cylinder (3008) and the rear pressing cylinder (30013) press the film material and can synchronously move under the forward and backward movement of the connecting shaft, so that film pulling action is realized;

the holding cylinders are respectively arranged at the front side and the rear side of the front pressing cylinder (3002), the middle pressing cylinder (3008) and the rear pressing cylinder (30013) and used for allowing the membrane material to penetrate and pressing the membrane material; in order to realize that all the holding cylinders relax and do not compress the membrane material in the membrane pulling process, and when the membrane pulling process is finished, all the holding cylinders compress the membrane material, so that the position of the membrane material is ensured.

5. The blood bag making machine according to claim 1, wherein the port tube conveying section specifically includes:

A conveying mechanism (5002) for continuously conveying the mouth pipe (5003);

a top mouth tube cylinder (5004) which is positioned above the conveying mechanism (5002) and can reciprocate in the vertical direction and is used for realizing a certain interval between two adjacent mouth tubes (5003);

a detection unit located at the front end of the transport mechanism (5002) for detecting whether the front-rear direction of the mouth tube (5003) is correct;

the mouth tube rotating seat (50014) is arranged at the front end of the conveying mechanism (5002) and connected with the detecting part, so that when the detecting part detects that the front-back direction of the mouth tube (5003) is incorrect, the mouth tube rotating seat (50014) can lift and rotate 180 degrees to ensure that the front-back direction of the mouth tube (5003) is correct;

and a grip unit which is positioned above the transport mechanism (5002) and is used for gripping and inserting the mouth tube (5003) with the correct front-rear direction into the electrode (50019).

6. The blood bag machine of claim 1, wherein the separation assembly comprises:

a film separating plate (13) for separating the upper and lower films;

the upper bag opening assembly and the lower bag opening assembly are positioned on the upper side and the lower side of the upper layer of film material and used for respectively adsorbing each layer of film material;

The upper push-pull cylinder and the lower push-pull cylinder are respectively connected with the upper bag opening assembly and the lower bag opening assembly and used for realizing left-right movement of the upper bag opening assembly and the lower bag opening assembly;

the upper lifting cylinder and the lower lifting cylinder are respectively connected with the upper bag opening assembly and the lower bag opening assembly and used for realizing the opening and combination of the upper bag opening assembly and the lower bag opening assembly.

7. The blood bag machine of claim 6, wherein the upper die (70) has a first support plate (72) and the first support plate (72) is located in a position other than the head welding module, and the lower die (80) has a first spring assembly (85) capable of contacting the first support plate (72) when welded to achieve a non-head position in which the first support plate (72) and the first spring assembly (85) press against a blood bag when welded;

the upper die (70) has a second support plate (73), and the second support plate (73) is located at a position other than the tail welding module, and the lower die (80) has a second spring assembly (86) capable of contacting the second support plate (73) when welding so as to realize that the second support plate (73) and the second spring assembly (86) press the non-tail position of the blood bag when welding.

8. The blood bag machine of claim 7, wherein the bag cutting device comprises:

a support bag assembly (6006) for supporting the membrane material;

a lower die assembly (6004) capable of being lifted to a position flush with the membrane material;

an upper die assembly (6001) located above the lower die assembly (6004) and capable of moving downwardly to effect a pouch cut.

9. The blood bag machine of claim 8, wherein the edge tearing means comprises:

a bag holding member (7002) for holding the bag;

a bag taking assembly (7003) which is positioned above the bag supporting component (7002) and can move downwards to press the bag supporting component (7002);

a tear edge gripper assembly (7001) for gripping the bag and capable of moving downwardly to tear the waste edge of the bag.

10. The blood bag machine of claim 9, wherein the output means comprises:

a conveyor belt (8001) for conveying the blood bag to a desired position;

and a motor (8002) connected to the conveyor belt (8001) for supplying power to the conveyor belt (8001).