CN102418682A - Double-cylinder metering plunger pump and metering method thereof - Google Patents
Double-cylinder metering plunger pump and metering method thereofDownload PDFInfo
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- CN102418682A CN102418682ACN2011104260023ACN201110426002ACN102418682ACN 102418682 ACN102418682 ACN 102418682ACN 2011104260023 ACN2011104260023 ACN 2011104260023ACN 201110426002 ACN201110426002 ACN 201110426002ACN 102418682 ACN102418682 ACN 102418682A
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- ball screw
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- glue
- pump head
- plunger rod
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Abstract
Description
Technical field
The present invention relates to point, encapsulating equipment design field, particularly a kind of twin-tub metering piston pump and method of measurement thereof.
Background technique
Point, encapsulating have following several kinds to supply the glue mode in the prior art: (1) small quantity plastic emitting, and through air pressure glue is directly exerted pressure, thereby control the amount and the pressure of glue through the break-make of air pressure; (2) gear pump control plastic emitting; Dependence is sealed in two or more gears in the housing; The working space volume-variation that in the process of being meshing with each other, is produced is carried the pump of liquid, through rotating speed and the number of turns control plastic emitting glue amount and the pressure of control gear pump internal gear; (3) screw pump control plastic emitting realizes the control to glue through pump housing internal rotor pitch, rotating speed.More than several kinds of technology have several kinds of defectives: (1) air pressure supplies glue, receives the influence of air pressure stability bigger, and very easily the variation because of air pressure impacts gel quantity, and accuracy, the conformity of plastic emitting is difficult to control; (2) pressure of the exhaust port of gear pump depends on the outside size that connects the sealant yielding system resistance fully; The size and the gel quantity of resistance are inversely proportional to, and the big gel quantity of resistance is little, and the little gel quantity of resistance is big; Pump can different capacities of reflux occur because of the size of resistance; And have at liquid under the situation of particle and very easily gear is caused wearing and tearing, can't use under the situation arbitrarily, accuracy, the conformity of plastic emitting is difficult to accurate control; (3) screw pump is a rubber product because of stator, not wear-resistantly needs periodic replacement, and the follow-up service cost improves, and screw pump can produce different capacities of reflux because of the variation of outlet pressure, and accuracy, the conformity of plastic emitting is difficult to accurate control.(4) present plastic emitting mode is and is interrupted plastic emitting, promptly advances outside plastic emitting under the effect of pressure again behind the glue, externally plastic emitting continuously from one or a glue-feeder.
Therefore, need provide that a kind of control accuracy is high, turnover glue is stable and the metering piston pump of plastic emitting continuously.
Summary of the invention
The shortcoming that main purpose of the present invention is to overcome existing technology provides a kind of twin-tub metering piston pump with not enough, and this device can realize continuous plastic emitting and turnover glue is stable, precision is high.The present invention also provides a kind of method of measurement based on above-mentioned twin-tub metering piston pump.
The object of the invention is realized through following technological scheme: a kind of twin-tub metering piston pump; Comprise motor, pump head, ball screw, driving gear, induction switch, base plate; Motor is fixed on the motor fixing plate that is arranged at base plate one side, and pump head is fixed on the pump head fixed plate that is arranged at the base plate opposite side; Motor is connected with driving gear through coupling; Base plate near an end of motor is provided with a ball screw front shoe, and two ball screw one sides are separately fixed on the ball screw front shoe, and two ball screw front portions also are connected with driving gear respectively; On each ball screw, be equipped with a plunger rod that can slide above that; During work, motor drives ball screw through driving gear, makes plunger rod on ball screw, carry out straight line motion; Between ball screw front shoe and pump head fixed plate, be provided with strut, the two ends of a strut are provided with an induction switch respectively therein, and two induction switches all link to each other with controller outside; Said pump head is provided with selector valve; The pump head upper end is provided with the gum exudation mouth that links to each other with outside plastic emitting control apparatus; The pump head side is provided with and advances the glue-feeder that gluing equipment links to each other; The respectively corresponding glue-feeder of each plunger rod and a gum exudation mouth, and this glue-feeder all is connected selector valve with gum exudation mouth.
Another plunger rod is retreated when a plunger rod advances; That is to say a cylinder when plastic emitting, another cylinder can advance glue simultaneously, adopts selector valve control twin-tub to advance gum exudation mouth; Can realize the moment exchange of twin-tub turnover glue; Thereby realize the uninterrupted glue that supplies, plunger rod produces vacuum when moving backward, thereby makes glue fill up cavity.
As preferred version, said motor is a stepper motor.Stepper motor can be controlled by controllor for step-by-step motor, can make device have higher transmission accuracy, and adopts gear matched simultaneously, and turnover glue that can assurance device is accurate.
Preferably; Saidly between ball screw front shoe and pump head fixed plate, be provided with strut; The two ends of a strut are provided with an induction switch respectively therein; Two induction switches all link to each other with controller outside and are used for after induction switch receives signal, changing the direction of advancing glue and plastic emitting, and selector valve is by electromagnetic valve, and solenoid valve, induction switch all are connected with peripheral control unit.Here controller generally adopts the PLC controller.
More specifically, said selector valve is an air operated reversing valve, and air operated reversing valve speed is very fast relatively; The fastest switching speed 0.05 second/inferior, fluid resistance is little, and its resistance coefficient equates with pipeline section with length; Closely reliable, be widely used plastics king, sealing of seal face materials is reliable, easy to operate; Open and close rapidly, be convenient to remote control.Easy to maintenance, seal ring generally all is movable, and dismounting and change is all more convenient.
Preferably, said device also comprises safety cover, and safety cover and base plate form a confined space, and ball screw, driving gear, induction switch all are arranged in the safety cover.Adopt this mode can prevent danger, reduce dust, the physical life of extension fixture.
A kind of method of measurement based on above-mentioned twin-tub metering piston pump; After the induction switch at the two ends that are arranged at the plunger rod direct of travel is sensed signal; Realize passing in and out the change of glue direction through the break-make that changes selector valve on motor sense of rotation and the pump head, keep two plunger rods to be in a state that advances a plastic emitting of glue all the time.
Specifically may further comprise the steps:
(1) controller is after the instruction of sending turnover glue; Motor drives driving gear through motor shaft and rotates; Driving gear drives connected ball screw and rotates and then make plunger rod on ball screw, to carry out straight line motion, and the direct of travel of two plunger rods on ball screw is opposite;
(2) judged whether that induction switch senses plunger rod, if then get into step (3); Otherwise continuing the current line precession does;
(3) induction switch sends to controller with induced signal; Controller sends to selector valve and motor on the pump head with commutation signal; Thereby the pairing selector valve of the plunger rod that induction switch is sensed switches the break-make mode and changes turnover glue direction; Motor changes its sense of rotation, and the moving direction of this plunger rod on ball screw is changed, and gets into step (1) then;
(4) accomplishing turnover glue, when controller sends halt instruction, stop aforesaid operations.
The present invention compared with prior art has following advantage and beneficial effect:
1, the present invention adopts two plunger pumps to accomplish the work of turnover glue; The direct of travel of two plunger pumps is opposite; One is advanced plastic emitting of glue at one time, adopts this mode can guarantee that plunger metering pump can be in the state of plastic emitting all the time, realizes continuous plastic emitting.
2, the motor among the present invention adopts stepper motor to control, and adopts high-precision gear matched simultaneously, realized that not only parallel bars do not have the gap switching-over, and the transmission accuracy of mechanism is also higher.
3, adopt ball screw to realize the straight line motion of plunger rod in apparatus of the present invention, because ball screw has the characteristics of highi degree of accuracy, reversibility and high efficiency, high capacity, realized low friction, low noise, thereby can guarantee the working life of mechanical structure.
4, apparatus of the present invention control is simple, and manual work only needs operation start, stop and the plastic emitting parameter is set and get final product, and the device internal structure is simple, and the accessory of use is accessory commonly used, and not only long service life and follow-up service maintenance is also more convenient.
Description of drawings
Fig. 1 is the sectional structure schematic representation of apparatus of the present invention;
Fig. 2 is the surface structure schematic representation of apparatus of the present invention.
Among Fig. 1-2: 1-base plate, 2-motor, 3-coupling, 4-motor fixing plate, 5-driving gear, 6-ball screw front shoe, 7-induction switch, 8-ball screw, 9-plunger rod, 10-strut, 11-pump head fixed plate, 12-pump head, 13-gum exudation mouth, 14-glue-feeder, 15-safety cover.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but mode of execution of the present invention is not limited thereto.
Embodiment 1
As illustrated in fig. 1 and 2; A kind of twin-tub metering piston pump; Comprise motor 2, pump head 12,safety cover 15 and be arranged on ball screw 8, driving gear 5, induction switch 7, the base plate 1 in thesafety cover 15 that be provided with motor fixing plate 4 in base plate 1 one sides, motor 2 is fixed on the motor fixing plate 4; Be provided with pump head fixed plate 11 at base plate 1 opposite side, pump head 12 is fixed on the pump head fixed plate 11; Motor 2 is connected with driving gear 5 through coupling 3; Base plate near an end of motor is provided with a ball screw front shoe 6; Two ball screw one sides are separately fixed on the ball screw front shoe 6, and two ball screw 8 front portions also are connected with driving gear 5 respectively, on each ball screw, are equipped with a plunger rod that can slide 9 above that; Each plunger rod 9 all joins with the strut 10 that is fixedly installed on the base plate; During work, motor 2 drives ball screw 8 through driving gear 5, makes plunger rod 9 on ball screw 8, carry out straight line motion; Between ball screw front shoe 6 and pump head fixed plate 11, be provided with strut 10, the two ends of a strut 10 are provided with 7, two induction switches of an induction switch respectively and all link to each other with controller outside therein; Be provided with four turnover glue through holes in the said pump head 12, through hole one end links to each other with outside turnover gluing equipment through advancinggum exudation mouth feeder 14 of each plunger rod and agum exudation mouth 13, and glue-feeder all is connected selector valve with gum exudation mouth.Advance gum exudation mouth thereby can control twin-tub, can realize the moment exchange of twin-tub turnover glue, thereby realize the uninterrupted glue that supplies through selector valve.
The motor 2 that adopts in the present embodiment is stepper motor.Stepper motor can be controlled by controllor for step-by-step motor, can make device have higher transmission accuracy, and adopts gear matched simultaneously, and turnover glue that can assurance device is accurate.
In addition, selector valve is by electromagnetic valve, and solenoid valve, induction switch all are connected with peripheral control unit.Adopt the PLC controller to come selector valve and induction switch are controlled in this instance.
A kind of method of measurement based on above-mentioned twin-tub metering piston pump; After the induction switch at the two ends that are arranged at the plunger rod direct of travel is sensed signal; Realize passing in and out the change of glue direction through the break-make that changes selector valve on motor sense of rotation and the pump head, keep two plunger rods to be in a state that advances a plastic emitting of glue all the time.
Specifically may further comprise the steps:
(1) controller is after the instruction of sending turnover glue; Motor drives driving gear through motor shaft and rotates; Driving gear drives connected ball screw and rotates and then make plunger rod on ball screw, to carry out straight line motion, and the direct of travel of two plunger rods on ball screw is opposite;
(2) judged whether that induction switch senses plunger rod, if then get into step (3); Otherwise continuing the current line precession does;
(3) induction switch sends to controller with induced signal; Controller sends to selector valve and motor on the pump head with commutation signal; Thereby the pairing selector valve of the plunger rod that induction switch is sensed switches the break-make mode and changes turnover glue direction; Motor changes its sense of rotation, and the moving direction of this plunger rod on ball screw is changed, and gets into step (1) then;
(4) accomplishing turnover glue, when controller sends halt instruction, stop aforesaid operations.
The foregoing description is a preferred implementation of the present invention; But mode of execution of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. twin-tub metering piston pump; It is characterized in that; Comprise motor, pump head, ball screw, driving gear, induction switch, base plate, motor is fixed on the motor fixing plate that is arranged at base plate one side, and pump head is fixed on the pump head fixed plate that is arranged at the base plate opposite side; Motor is connected with driving gear through coupling; Base plate near an end of motor is provided with a ball screw front shoe, and two ball screw one sides are separately fixed on the ball screw front shoe, and two ball screw front portions also are connected with driving gear respectively; On each ball screw, be equipped with a plunger rod that can slide above that; During work, motor drives ball screw through driving gear, makes plunger rod on ball screw, carry out straight line motion; Between ball screw front shoe and pump head fixed plate, be provided with strut, the two ends of a strut are provided with an induction switch respectively therein, and two induction switches all link to each other with controller outside; Said pump head is provided with selector valve; The pump head upper end is provided with the gum exudation mouth that links to each other with outside plastic emitting control apparatus; The pump head side is provided with and advances the glue-feeder that gluing equipment links to each other; The respectively corresponding glue-feeder of each plunger rod and a gum exudation mouth, and this glue-feeder all is connected selector valve with gum exudation mouth.
2. twin-tub metering piston pump according to claim 1 is characterized in that, said motor is a stepper motor.
3. twin-tub metering piston pump according to claim 1 is characterized in that, selector valve is by electromagnetic valve, and solenoid valve is connected with peripheral control unit.
4. twin-tub metering piston pump according to claim 3 is characterized in that, also comprises safety cover, and safety cover and base plate form a confined space, and ball screw, driving gear, induction switch all are arranged in the safety cover.
5. method of measurement based on the said twin-tub metering piston pump of claim 1; It is characterized in that; After the induction switch at the two ends that are arranged at the plunger rod direct of travel is sensed signal; Realize passing in and out the change of glue direction through the break-make that changes selector valve on motor sense of rotation and the pump head, keep two plunger rods to be in a state that advances a plastic emitting of glue all the time.
6. the method for measurement of twin-tub metering piston pump according to claim 5 is characterized in that, specifically may further comprise the steps:
(1) controller is after the instruction of sending turnover glue; Motor drives driving gear through motor shaft and rotates; Driving gear drives connected ball screw and rotates and then make plunger rod on ball screw, to carry out straight line motion, and the direct of travel of two plunger rods on ball screw is opposite;
(2) judged whether that induction switch senses plunger rod, if then get into step (3); Otherwise continuing the current line precession does;
(3) induction switch sends to controller with induced signal; Controller sends to selector valve and motor on the pump head with commutation signal; Thereby the pairing selector valve of the plunger rod that induction switch is sensed switches the break-make mode and changes turnover glue direction; Motor changes its sense of rotation, and the moving direction of this plunger rod on ball screw is changed, and gets into step (1) then;
(4) accomplishing turnover glue, when controller sends halt instruction, stop aforesaid operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426002.3ACN102418682B (en) | 2011-12-15 | 2011-12-15 | Double-cylinder metering plunger pump and metering method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426002.3ACN102418682B (en) | 2011-12-15 | 2011-12-15 | Double-cylinder metering plunger pump and metering method thereof |
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| CN102418682Atrue CN102418682A (en) | 2012-04-18 |
| CN102418682B CN102418682B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110426002.3AActiveCN102418682B (en) | 2011-12-15 | 2011-12-15 | Double-cylinder metering plunger pump and metering method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728069A (en)* | 2015-01-07 | 2015-06-24 | 天津市发现者厨房机器人科技有限公司 | Method for single motor to drive multi-cylinder metering pump |
| CN105257497A (en)* | 2015-09-28 | 2016-01-20 | 上海伍丰科学仪器有限公司 | High pressure solvent delivery pump and minitype high pressure solvent delivery pump system |
| CN106523318A (en)* | 2016-10-31 | 2017-03-22 | 深圳市世椿智能装备股份有限公司 | Two-way piston pump and control method thereof |
| CN107939629A (en)* | 2017-11-13 | 2018-04-20 | 重庆鼎满科技发展有限公司 | A kind of longer metering pump of service life |
| CN108150377A (en)* | 2017-11-30 | 2018-06-12 | 北京卫星制造厂 | Parallel advection plunger pump |
| CN108361168A (en)* | 2018-02-05 | 2018-08-03 | 南京航空航天大学 | It is staggered the time based on dual piston the continuous and stable type metering pump of compensation policy |
| CN109441789A (en)* | 2018-11-30 | 2019-03-08 | 扬州四启环保设备有限公司 | A kind of V-arrangement composite rim pressure regulation reversing mechanism |
| CN109985773A (en)* | 2019-03-13 | 2019-07-09 | 厦门盈硕科智能装备有限公司 | Dispenser |
| CN111203365A (en)* | 2020-01-10 | 2020-05-29 | 望汭(上海)自动化技术有限公司 | Double-metering-cylinder operation platform |
| CN112502951A (en)* | 2020-11-11 | 2021-03-16 | 东莞市吉克尔自动化科技有限公司 | Intelligent linear large-flow metering pump |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104728069B (en)* | 2015-01-07 | 2017-03-01 | 天津市发现者厨房机器人科技有限公司 | A kind of method of single Motor drive multi-cylinder dosing pump |
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| CN106523318B (en)* | 2016-10-31 | 2019-04-02 | 深圳市世椿智能装备股份有限公司 | A kind of type bidirectional piston pump and its control method |
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| CN108150377A (en)* | 2017-11-30 | 2018-06-12 | 北京卫星制造厂 | Parallel advection plunger pump |
| CN108150377B (en)* | 2017-11-30 | 2019-09-06 | 北京卫星制造厂 | Parallel advection plunger pump |
| CN108361168A (en)* | 2018-02-05 | 2018-08-03 | 南京航空航天大学 | It is staggered the time based on dual piston the continuous and stable type metering pump of compensation policy |
| CN109441789A (en)* | 2018-11-30 | 2019-03-08 | 扬州四启环保设备有限公司 | A kind of V-arrangement composite rim pressure regulation reversing mechanism |
| CN109985773A (en)* | 2019-03-13 | 2019-07-09 | 厦门盈硕科智能装备有限公司 | Dispenser |
| CN111203365A (en)* | 2020-01-10 | 2020-05-29 | 望汭(上海)自动化技术有限公司 | Double-metering-cylinder operation platform |
| CN112502951A (en)* | 2020-11-11 | 2021-03-16 | 东莞市吉克尔自动化科技有限公司 | Intelligent linear large-flow metering pump |
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| CN102418682B (en) | 2014-03-12 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | Denomination of invention:A double cylinder metering plunger pump and its metering method Effective date of registration:20210518 Granted publication date:20140312 Pledgee:Guangzhou Caold financing Company limited by guarantee Pledgor:GUANGZHOU ZHENGQI TECHNOLOGY Co.,Ltd. Registration number:Y2021980003722 | |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | Denomination of invention:A dual cylinder metering plunger pump and its metering method Granted publication date:20140312 Pledgee:Industrial and Commercial Bank of China Limited Guangzhou Development Zone Branch Pledgor:GUANGZHOU ZHENGQI TECHNOLOGY Co.,Ltd. Registration number:Y2024980015894 |