Rapid fixing die for producing foam packaging boxesTechnical Field
The invention relates to the technical field of foam packaging box production, in particular to a quick fixing die for foam packaging box production.
Background
Foam packaging boxes, generally referred to as packaging containers made of polystyrene (EPS), polyurethane (PU) or other foamed plastics, have light weight, high elasticity and excellent cushioning properties, and are thus widely used for protecting fragile articles and products during transportation. The foam packaging box not only can provide good physical protection, but also has certain heat insulation and sound insulation effects, so that the foam packaging box becomes an ideal choice for electronic products, household appliances, glass products and the like which need special protection.
Through searching, the mould for producing and processing the foam packaging box with the patent grant publication number of CN215434973U comprises a workbench, a groove and an annular groove are formed in the top of the workbench, a support frame is fixedly arranged at the top of the workbench, a hydraulic cylinder II is fixedly arranged on the support frame, a piston rod is fixedly connected to the hydraulic cylinder II, a pressing plate is fixedly arranged at one end, far away from the hydraulic rod, of the piston rod, a lifting mechanism is arranged on the workbench, the lifting mechanism is matched with a rotating mechanism, the mould for processing utilizes the lifting mechanism to eject the foam packaging box processed in the mould, the effect of simplifying manual material taking operation is achieved, but foam box blanks after demoulding still need to be manually collected, bundled and carried, and then a final finished product can be achieved after the foam packaging box blanks are sent into a large-scale drying workshop for drying treatment.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a quick fixing die for producing foam packaging boxes.
The technical scheme of the invention is that the quick fixing mold for producing the foam packaging box comprises a supporting plate and a guide rod, wherein a plurality of parallel guide rods are fixedly connected between the two supporting plates, the supporting plate and the guide rod form a main body bracket of the mold equipment, a first mold is connected to the guide rod in a sliding manner, a first hydraulic cylinder is fixedly arranged on one side of the supporting plate, a piston rod of the first hydraulic cylinder is connected with the first mold, and a charging connector for adding cured EPS raw materials is assembled at the top of the first mold; the mold comprises a mold plate, wherein sliding cavities are formed in four sides of the inner wall of a mold cavity I, the mold plate is assembled in the sliding cavities in a sliding mode, a molding cavity for pressing a foam box is formed between the mold plates in a sealing mode, a first cooling valve for filling cooling water into the molding cavity is arranged at the top of the mold I, a second cooling valve for discharging the cooling water is arranged at the bottom of the mold I, a hydraulic cylinder II is fixedly arranged on the supporting plate on the other side of the supporting plate, a hot pressing block is fixedly connected onto a piston rod of the hydraulic cylinder II, an electric heating wire for heating and solidifying the foam box is integrated in the hot pressing block, a second mold is connected onto a guide rod in a sliding mode, the second mold is an annular frame body with an opening, the hot pressing block penetrates through the mold II in a sliding mode and is attached to the inner wall of a ring body in a sliding mode, pushing blocks which protrude outwards are fixedly connected onto the outer walls of two sides of the hot pressing block, a sealing member for pushing the mold II is used for pushing the mold II, a sealing member for sealing the mold II is arranged on the frame body of the mold II, the sealing member comprises a sealing frame which is fixedly connected onto the mold II through a connecting rod in a sliding mode, the sealing frame which faces towards the end portion of the mold II, an elastic connecting plate is fixedly connected between the sealing frame and the sealing frame, the first die is provided with a driving mechanism for driving the die plate to slide, and the first die is also provided with a drying mechanism for drying the solid foam box.
Further stated, the sealing element comprises a sealing frame which is embedded in the second die through the sliding of the connecting rod, the connecting plate is fixedly connected with the end part of the connecting rod of the sealing frame, and an elastic element is arranged between the connecting plate and the second die.
Further stated, the top and the bottom of one side of the first die, which is close to the second die, are fixedly provided with the first electromagnet, the top and the bottom of one side of the second die, which is close to the first die, are fixedly provided with the second electromagnet, and the first electromagnet and the second electromagnet are matched and have different magnetism after being electrified.
Further stated, actuating mechanism includes hydraulic push rod, communicating pipe, hydraulic pump and suction tube, the equal fixed embedded hydraulic push rod that is equipped with in die cavity inner wall four sides of mould one, hydraulic push rod's cylinder body is all stored hydraulic oil in, hydraulic push rod runs through behind the mould one and links to each other with the mould board that homonymy corresponds, communicate into a whole through communicating pipe between hydraulic push rod's the cylinder body, fixed mounting has the hydraulic pump on the outer wall of mould one, the hydraulic pump passes through the suction tube and links to each other with one of them hydraulic push rod's cylinder body, the hydraulic pump is used for controlling a plurality of hydraulic push rods and carries out synchronous flexible.
Further stated, the drying mechanism comprises a heater, a drying air pump and an air pipe, the heater is fixedly assembled on the outer wall of the top of the first mold, the drying air pump is fixedly installed on the outer wall of the top of the first mold, an air inlet of the drying air pump is communicated with the heater through a pipeline, the air pipe is fixedly embedded in a frame of the first mold, the air pipe and an air outlet pipe opening are fixedly embedded in a mold plate on the upper portion, and an air outlet of the drying air pump is communicated with the air pipe through the pipeline.
Further stated, the top of the frame of the first die is provided with an exhaust valve, the exhaust valve is a one-way valve which is communicated from the inside to the outside of the first die in a one-way, and the exhaust valve is used for synchronously exhausting the dry gas filled into the first die by the dry gas pump, so that the molding cavity of the first die and the air pressure of the outside are balanced.
Further stated, a plurality of circular arc cavities are formed in the plate body of the inner bottom mold plate in the mold I, the top of each circular arc cavity is provided with a through hole, a switching piece is arranged in each circular arc cavity and used for opening or closing the through hole of each circular arc cavity in the mold plate, and a high-pressure air pump is fixedly mounted on the side wall of the outer wall of the mold I and communicated with the corresponding switching piece through a hose.
Further, the switching piece comprises an arc frame, an air nozzle and a micro motor, the arc frame is rotatably arranged in the arc cavity of the mold plate at the bottom in the mold, the arc surface of the arc frame is in closed sliding contact with the arc cavity, the air nozzle is fixedly arranged in the arc frame, the air outlet of the air nozzle penetrates out of the frame body of the arc frame, the air nozzle is communicated with the corresponding high-pressure air pump through a hose, the micro motor is fixedly arranged in the arc cavity of the mold plate, and the output shaft of the micro motor is connected with the arc frame.
Further stated, the supporting plate of the first hydraulic cylinder is provided with an ejection piece for demolding, the ejection piece comprises an ejection frame and a top plate, the supporting plate of the first hydraulic cylinder is fixedly connected with the ejection frame, the ejection frame penetrates into the frame body of the first mold through a top rod, the top plate is fixedly arranged at the end part of the top rod of the ejection frame, and the top plate is embedded in and flush with the inner wall of the mold cavity of the first mold.
Compared with the prior art, the invention has the following advantages:
1. The invention integrates the first hydraulic cylinder and the second hydraulic cylinder, respectively controls the actions of the first die and the hot pressing block, realizes the rapid heating, expansion and solidification of the cured EPS raw material, simultaneously rapidly cools the first cooling valve and the second cooling valve in the forming cavity, and finally dehumidifies and dries the cooled foam packaging box by utilizing high-temperature gas in cooperation with the drying mechanism, thereby realizing the integrated solidification and forming of the foam box.
2. According to the invention, the sealing performance of the molding cavity in the hot pressing process of the sealing piece can be utilized to prevent EPS raw materials from leaking or external air from entering, the product quality is ensured, the sealing effect is further enhanced by utilizing the arrangement of the electromagnet I and the electromagnet II, and after the hot pressing and cooling are finished, the sealing state is kept by magnetic force, so that a good environment is provided for subsequent drying.
3. The invention can synchronously control the movement of a plurality of mould plates through the driving mechanism, so that the mould plates can be separated from the foam box, and the high-pressure air pump is matched to convey air to each air tap through the hose to blow up the solid foam box, thereby further improving the bottom drying effect of the foam box and ensuring the uniform drying of the whole foam box.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
FIG. 2 is a schematic view of a support plate, guide rods, a first die, a hot press block and a second die of the present invention.
Fig. 3 is a cross-sectional view showing the internal structure of the first and second molds of the present invention.
Fig. 4 is a schematic diagram of the matching relationship of the hot pressing block, the pushing block, the heating wire and the die II.
Fig. 5 is a diagram showing the connection relationship between a first die, a die plate and specific components of a driving mechanism according to the present invention.
Fig. 6 is a schematic view of specific components of the mold one and drying mechanism of the present invention.
Fig. 7 is a diagram showing the connection relationship of the die plate, the switching member, the high-pressure air pump and the hose according to the present invention.
FIG. 8 is a diagram showing the connection relationship among the arc frame, the air tap and the micro motor.
Fig. 9 is a schematic perspective view of a mold one and an ejector according to the present invention.
In the drawing, the names and serial numbers of the parts are 1, a supporting plate, 2, a guide rod, 3, a first die, 30, a first hydraulic cylinder, 31, a charging connector, 32, a die plate, 321, a sliding cavity, 322, an arc cavity, 33, a first cooling valve, 331, a second cooling valve, 4, a hot pressing block, 41, a second hydraulic cylinder, 42, an electric heating wire, 43, a pushing block, 5, a second die, 6, a sealing member, 61, a sealing frame, 611, a connecting rod, 62, a connecting plate, 63, an elastic member, 71, a first electromagnet, 72, a second electromagnet, 8, a driving mechanism, 81, a hydraulic push rod, 82, a communicating pipe, 83, a hydraulic pump, 84, a suction pipe, 9, a drying mechanism, 91, a heater, 92, a drying air pump, 93, an air pipe, 94, an exhaust valve, 10, a switching member, 101, an arc frame, 102, an air tap, 103, a miniature motor, 11, a high-pressure air pump, 12, a hose, 13, an ejection member, 131, an ejection frame, 132 and a top plate.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The embodiment 1 is a rapid fixing mold for producing foam packaging boxes, which comprises a supporting plate 1 and a guide rod 2, wherein a plurality of parallel guide rods 2 are fixedly connected between the two supporting plates 1, the supporting plate 1 and the guide rod 2 form a main body bracket of the mold equipment, a first mold 3 is connected onto the guide rod 2 in a sliding manner, a first hydraulic cylinder 30 is fixedly arranged on one side supporting plate 1, a piston rod of the first hydraulic cylinder 30 is connected with the first mold 3, and a charging connector 31 for adding curing EPS raw materials is assembled at the top of the first mold 3; the mold comprises a mold plate 32, sliding cavities 321 are formed in four edges of the inner wall of a mold cavity of the first mold 3, the mold plate 32 is slidably assembled in the sliding cavities 321 of the first mold 3, a forming cavity for pressing a foam box is formed by a cavity enclosed between the mold plates 32, a first cooling valve 33 for filling cooling water into the forming cavity is arranged at the top of the first mold 3, a second cooling valve 331 for discharging cooling water is arranged at the bottom of the first mold 3, a hydraulic cylinder II 41 is fixedly arranged on a supporting plate 1 on the other side, a hot-pressing block 4 is fixedly connected to a piston rod of the hydraulic cylinder II 41, an electric heating wire 42 for heating and solidifying the foam box is integrated in the hot-pressing block 4, a second mold 5 is slidably connected to a guide rod 2, the second mold 5 is an annular frame body with an opening, the hot-pressing block 4 slidably penetrates through the second mold 5 and is attached to the inner wall of the ring body, outwardly protruding pushing blocks 43 are fixedly connected to the outer walls of two sides of the hot-pressing block 4, the pushing blocks 43 are used for pushing the second mold 5, the second mold 5 can be driven by the hot-pressing block 4 to press the second mold 5, a sealing member 6 for sealing the second mold 3 is arranged on the frame body of the second mold 5, the sealing member 6 is embedded in the connecting rod 611 is fixedly arranged on the second mold 5 frame body, the sealing member 6 is used for sealing the first mold 3, the sealing member 61 is arranged between the first mold 3 and the sealing frame 61 is faced by the sealing frame 61, the end of a connecting rod 611 of a sealing frame 61 is fixedly connected with a connecting plate 62, an elastic piece 63 is arranged between the connecting plate 62 and a die II 5, a driving mechanism 8 for driving a die plate 32 to slide is arranged on the die I3, a drying mechanism 9 for drying a solid foam box is also arranged on the die I3, a hydraulic cylinder II 41 drives a hot pressing block 4 to press towards the forming cavity of the die I3, a pushing block 43 of the hot pressing block 4 presses the die II 5 to synchronously move, the sealing piece 6 is pressed and sealed between the die I3 and the die II 5, a charging pipe is abutted by a charging connector 31, then a forming cavity between the die I3 and the die II 5 is filled with cured EPS raw materials, the EPS raw materials in the forming cavity are hot-pressed through the hot pressing block 4, the EPS raw materials are expanded and hot-melted into a thermoplastic state, the cooled solid foam box in the forming cavity is cooled through a cooling valve I33 after the hot pressing is finished, cooled through the cooling valve II 331, the cooled water is driven by the driving mechanism 8 to drive the die plate 32 to expand and separate from the cooled foam box, a drying clearance is formed in the forming cavity, the forming cavity is finally emptied, the drying mechanism 9 is used for drying the foam box, and finally the foam box is discharged from the forming cavity, and finally the die 4 is cooled and finally subjected to die cavity 4 to die cavity drying.
As shown in fig. 2 and fig. 3, the top and the bottom of one side of the first mold 3, which is close to the second mold 5, are fixedly provided with the first electromagnet 71, the top and the bottom of one side of the second mold 5, which is close to the first mold 3, are fixedly provided with the second electromagnet 72, the first electromagnet 71 and the second electromagnet 72 are matched and have different magnetism after being electrified, the hot-pressing block 4 pushes the second mold 5 and the first mold 3 to press together, the sealing frame 61 is firstly contacted with the first mold 3, and when the second mold 5 and the first mold 3 are pressed together, the sealing frame 61 is slidingly embedded into the second mold 5, the elastic piece 63 between the connecting plate 62 and the second mold 5 is lengthened, the sealing frame 61 can seal and joint the gap between the second mold 5 and the first mold 3, after the hot-pressing block 4 is completely pressed and cooled, the first electromagnet 71 and the second electromagnet 72 are electrified to suck mutually, and after the hot-pressing block 4 is retracted for a certain distance in the forming cavity of the first mold 3, the second mold 5 and the sealing frame 61 can be always kept sealed on the first mold 3, and the hot-pressing block 4 is pressed together with the space when the hot-pressing block 4 is left empty.
When the mold is used for the solid production of foam packaging boxes, the first hydraulic cylinder 30 is started to drive the first mold 3 to fix the pressing position on the guide rod 2, the second hydraulic cylinder 41 is started to drive the hot pressing block 4 to move towards the first mold 3, the moving hot pressing block 4 is pressed on the second mold 5 through the pushing block 43, so that the second mold 5 is driven to synchronously move towards the first mold 3 along the guide rod 2, when the sealing frame 61 at the edge of the second mold 5 gradually clings to the contact surface of the first mold 3 along with the pressing action, the sealing frame 61 is gradually and slidingly embedded into the second mold 5, the elastic piece 63 between the second mold 5 and the connecting plate 62 is lengthened, the sealing clinging of the first mold 3 and the second mold 5 is ensured, when the second mold 5 is also contacted and clinged to the first mold 3, a heteropolar magnetic field is generated after the electromagnet 71 and the electromagnet 72 are electrified, the pressing stability of the first die 3 and the second die 5 is further enhanced by magnetic attraction, gap leakage caused by material expansion in subsequent high-temperature and high-pressure operation is prevented, tightness of a molding cavity between the first die 3 and the second die 5 is ensured, then a closed molding cavity formed in the first die is connected with an external raw material conveying system through a charging connector 31, cured EPS particles are injected into the sealed molding cavity through the charging connector 31, the molding cavity is uniformly filled with raw materials in a closed environment, then the raw materials enter a hot pressing process, heating and heating are started through an electric heating wire 42 integrated in a hot pressing block 4, continuous pressure is applied to the raw materials, the EPS particles are expanded and melted at high temperature and high pressure, and gradually attached to the inner wall of the die to form a box structure, sufficient molding of the materials is ensured, the materials enter a cooling and shaping stage after hot pressing is completed, the hot pressing block 4 is driven by the hydraulic cylinder II 41 to reset and withdraw from the fixed cavity of the die I3 for a certain distance, the sealing state in the molding cavity is maintained, a certain cooling gap is left in the fixed cavity, the cooling valve I33 is opened, circulating cooling water is injected into the molding cavity, the cooling water uniformly flows along the flow passage in the die, heat on the foam box which is just hot-pressed is taken away rapidly, and the cooling water is discharged from the opened cooling valve II 331.
In embodiment 2, on the basis of embodiment 1, as shown in fig. 1 and 5, the driving mechanism 8 comprises a hydraulic push rod 81, a communicating pipe 82, a hydraulic pump 83 and a suction pipe 84, wherein the hydraulic push rod 81 is fixedly embedded into four sides of the inner wall of a die cavity of the first die 3, hydraulic oil is stored in a cylinder body of the hydraulic push rod 81, the push rods of the hydraulic push rod 81 penetrate through the first die 3 and are connected with a corresponding die plate 32 on the same side, the cylinders of the hydraulic push rod 81 are communicated into a whole through the communicating pipe 82, the hydraulic pump 83 is fixedly arranged on the outer wall of the first die 3, the hydraulic pump 83 is connected with the cylinder body of one of the hydraulic push rods 81 through the suction pipe 84, the hydraulic pump 83 is used for controlling the synchronous expansion and contraction of the plurality of hydraulic push rods 81, the hydraulic pump 83 can synchronously pump hydraulic oil in the cylinder body of the hydraulic push rod 81 by utilizing the matching of the suction pipe 84, and the corresponding die plate 32 can be synchronously driven by the hydraulic push rod 81 to move in the sliding cavity 321, so that the die plate 32 can be separated and separated from a foam box formed by the compression molding, and the foam box can be conveniently dried in high efficiency.
As shown in fig. 1, 2 and 6, the drying mechanism 9 comprises a heater 91, a drying air pump 92 and an air pipe 93, wherein the heater 91 is fixedly assembled on the top outer wall of the first mold 3, the drying air pump 92 is fixedly assembled on the top outer wall of the first mold 3, an air inlet of the drying air pump 92 is communicated with the heater 91 through a pipeline, the air pipe 93 is fixedly embedded in a frame body of the first mold 3, the air pipe 93 is fixedly embedded on a mold plate 32 at the upper part of the air pipe, an air outlet of the drying air pump 92 is communicated with the air pipe 93 through a pipeline, the drying air pump 92 pumps air heated by the heater 91 into the air pipe 93, so that the air pipe 93 can input high-temperature gas into a forming cavity of the first mold 3 to dehumidify and dry the cooled foam package box, the air outlet valve 94 is arranged on the top of the frame body of the first mold 3, the air outlet valve 94 is a one-way valve which is in one-way communicated from the inside of the first mold 3, and the air outlet valve 94 is used for synchronously discharging the drying air from the air pump 92 to the inside of the first mold 3, so that the forming cavity of the first mold 3 and the air pressure of the outside are balanced.
As shown in fig. 7 and 8, a plurality of circular arc cavities 322 are formed in the plate body of the bottom mold plate 32 in the first mold 3, a through hole is formed in the top of each circular arc cavity 322, a switching piece 10 is arranged in each circular arc cavity 322, each switching piece 10 is used for opening or closing the through hole of each circular arc cavity 322 in the mold plate 32, a high-pressure air pump 11 is fixedly arranged on the side wall of the outer wall of the first mold 3, and the high-pressure air pumps 11 are communicated with each other through a hose 12; the switching piece 10 comprises an arc frame 101, an air tap 102 and a micro motor 103, wherein the arc frame 101 is rotatably arranged in an arc cavity 322 of a first inner bottom mold plate 32 of a first mold, the arc surface of the arc frame 101 is in closed sliding contact with the arc cavity 322, the air tap 102 is fixedly arranged in the arc frame 101, an air outlet of the air tap 102 penetrates out of a frame body of the arc frame 101, the air tap 102 is communicated with a corresponding high-pressure air pump 11 through a hose 12, the micro motor 103 is fixedly arranged in the arc cavity 322 of the first mold plate 32, an output shaft of the micro motor 103 is connected with the arc frame 101, and when the motor drives the corresponding air tap 102 to be aligned with a through hole on the arc cavity 322 through the arc frame 101, the high-pressure air pump 11 is utilized to blow up each corresponding air tap 102 through the hose 12, so that a solid foam box falling on the first bottom mold plate 32 of the first mold 3 of the mold can be dried by a drying mechanism 9, the drying efficiency of the solid foam box is further improved, and the solid production time is shortened.
As shown in fig. 1 and 9, the supporting plate 1 where the first hydraulic cylinder 30 is located is provided with an ejection piece 13 for demolding, the ejection piece 13 comprises an ejection frame 131 and a top plate 132, the supporting plate 1 where the first hydraulic cylinder 30 is located is fixedly connected with the ejection frame 131, the ejection frame 131 penetrates into the frame body of the first mold 3 through a top rod, the top plate 132 is fixedly arranged at the end part of the top rod of the ejection frame 131, the top plate 132 is embedded and flush with the inner wall of the mold cavity of the first mold 3, after the foam box is hot pressed, cooled and dried, the first hydraulic cylinder 30 is utilized to drive the mold 3 and the second mold 5 to separate, and the top plate 132 of the ejection frame 131 can extrude the foam box with completed solid form from the molding cavity, so that the effect of automatic demolding is achieved.
After the foam box is completely solidified, the hydraulic pump 83 is started, the hydraulic pump 83 synchronously pumps out a certain amount of hydraulic oil to the cylinder body of each hydraulic push rod 81 through the suction pipe 84 and the communicating pipe 82, so that the hydraulic push rods 81 can control the four-side die plates 32 in the first die 3 to expand outwards along the sliding cavity 321 and separate from the surface of the solidified foam box to form a uniform clearance space, an airflow channel is provided for the subsequent drying stage, at the moment, the foam box falls on the die plate 32 at the bottom under the action of self gravity, then the air heated by the heater 91 is conveyed into the air conveying pipe 93 through the drying air pump 92, hot air is introduced into the forming cavity through the air conveying pipe 93, then the micro motor 103 is started, the micro motor 103 drives the circular arc frame 101 to rotate in the circular arc cavity 322 of the die plate 32, the air nozzle 102 in the circular arc frame 101 is led out of the Ji Yuanhu cavity 322, the method comprises the steps of changing a plurality of through holes on a bottom mold plate 32 from a closed state to an open state, then starting a high-pressure air pump 11, enabling the high-pressure air pump 11 to convey air to corresponding air nozzles 102 through hoses 12, spraying air flow to the bottom surface of a foam box through the air nozzles 102 on the mold plate 32, slightly lifting the foam box from the bottom mold plate 32 through the air flow, enabling the bottom of the foam box to be completely exposed to a hot air environment, eliminating drying dead angles and achieving the effect of omnibearing drying, realizing quick drying of the foam box, after the foam box is dried, synchronously moving back along a guide rod 2 under the traction of a hydraulic cylinder I30 by a mold I3, stably pushing out a top plate 132 on an ejection frame 131 from an inner forming cavity of the mold I3, completely pushing out the dried foam box out of the cavity and demolding, then driving the mold I3 to reset to a pressing position again by the hydraulic cylinder I30, preparing for the next round of production cycle, therefore, the dispersed hot pressing, cooling, drying and demolding procedures in the traditional process are integrated into a single mold system, and the production period is obviously shortened.
While the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the following claims. Accordingly, the detailed description of the disclosed embodiments is to be taken only by way of illustration and not by way of limitation, and the scope of protection is defined by the content of the claims.