CN108999982B - Piston type metering valve - Google Patents
Piston type metering valve Download PDFInfo
- Publication number
- CN108999982B CN108999982B CN201810830766.0A CN201810830766A CN108999982B CN 108999982 B CN108999982 B CN 108999982B CN 201810830766 A CN201810830766 A CN 201810830766A CN 108999982 B CN108999982 B CN 108999982B
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- Prior art keywords
- glue
- control device
- valve core
- piston
- drop
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- 239000003292 glue Substances 0.000 claims abstract description 143
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 24
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 230000006698 induction Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 16
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1026—Valves
- B05C11/1028—Lift valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0225—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work characterised by flow controlling means, e.g. valves, located proximate the outlet
- B05C5/0237—Fluid actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to a piston metering valve comprising: glue in and out control device; the glue inlet and outlet control device is provided with a substrate; the upper surface of the matrix is provided with a water drop type groove; the drop-shaped groove is provided with a feed inlet and a discharge outlet and is only used for one glue, so that the glue is prevented from being stringed; the glue inlet and outlet control device is provided with an adapter plate; the adapter plate is provided with an external glue supply pipeline; the feed inlet is directly communicated with an external glue supply pipeline and is used for enabling external glue to directly flow into the drop-shaped groove; only one water drop type groove is respectively arranged on the upper end face and the lower end face of the matrix; a piston rod is arranged on the glue inlet and outlet control device; and a glue discharging control device is arranged above the piston rod. The piston type metering valve provided by the invention can strictly control the glue amount, can rapidly, accurately and repeatedly inject glue, avoids glue stringing of glue, and has strong practicability.
Description
Technical Field
The invention relates to glue injection equipment, in particular to a piston type metering valve device for precisely injecting glue.
Background
At present, in a glue injection method in a plurality of glue injection devices, according to a glue amount control principle, the glue amount can be controlled mainly by a pressure time function method and a screw control method.
The pressure time function method is mainly influenced by the air pressure, the glue outlet time, the running speed of equipment, the size of a needle mouth and the like. The predetermined glue amount and the diameter of the glue point are achieved by controlling the time and the air pressure and the relation between the time and the air pressure, and the glue amount is generally proportional to the pressure and the time. However, the pressure time method is more restricted factors, the accuracy of the glue amount is affected, the back pressure is caused by the fact that the needle head is unsuitable in size, the phenomenon of dripping is formed soon after the glue valve is closed is caused as a result, the continuous accurate control of the pressure and the time is relatively difficult, the high-viscosity fluid can cause too low flow velocity, inaccurate glue amount or machine faults are easily caused, the working efficiency of the glue injection speed depends on the fluidity of the glue, the glue is difficult to be constant, and the air is easily permeated into the liquid by the overlarge fluid pressure and the too short valve opening time, so that bubbles in the fluid are easily caused.
The screw method is to drive glue solution by screw rod pressurizing technology, and it adopts motor driving to make screw rod rotate by accurate distance or angle. Although the screw method is relatively less in external factors, the requirement on pressure feedback of the screw method is high, for high-viscosity fluid, pressure transmission performance is poor, pressure detection is delayed, so that pipe explosion is easily caused near a screw valve, meanwhile, the internal pressure of high-viscosity glue is uneven due to uneven pressure of a material pipe, and the accuracy of the glue amount is affected.
Patent CN 101393086B discloses a metering valve comprising a pneumatic control portion and a metering sampling portion. A central shaft piston with a moving distance D is arranged in the air chamber of the pneumatic control part, and the left side and the right side of the central shaft piston are respectively communicated with the first air inlet hole and the second air inlet hole; the metering sampling part comprises an upper sliding block, a middle sliding block and a lower sliding block which are sequentially connected, wherein the upper sliding block is provided with a first upper through hole, a second upper through hole and a third upper through hole with the apertures of R1 from left to right, the lower sliding block is provided with a first lower through hole, a second lower through hole and a third lower through hole from left to right, the apertures of the first lower through hole and the third lower through hole are R1, the apertures of the second lower through hole are R2, the middle sliding block is provided with a first middle through hole, a second middle through hole, a third middle through hole and a fourth middle through hole with the apertures of R3 from left to right, the hole spacing of all the through holes is D, and R2 is more than R1 and is more than R3; the sliding sheet sleeved on the middle sliding block is connected with the central shaft piston. The invention has the advantages of easy and automatic sampling and quantifying, easy sample feeding, saving manpower and material resources and increasing the working efficiency. However, the working accuracy is not improved obviously, the amount of materials required in the working cannot be ensured to be accurate, and deviation is easy to generate. There is a great need for a piston metering valve assembly that can tightly control the amount of glue and that can stabilize the injection of glue.
Disclosure of Invention
The invention aims to provide a piston type metering valve device which can strictly control the glue amount and can stably inject glue.
In order to solve the above problems, the present invention provides a piston type metering valve apparatus comprising:
glue in and out control device;
The glue inlet and outlet control device is provided with a substrate; the upper surface of the matrix is provided with a water drop type groove; the drop-shaped groove is provided with a feed inlet and a discharge outlet and is only used for one glue, so that the glue is prevented from being stringed; the glue inlet and outlet control device is provided with an adapter plate; the adapter plate is provided with an external glue supply pipeline; the feed inlet is directly communicated with an external glue supply pipeline and is used for enabling external glue to directly flow into the drop-shaped groove; only one water drop type groove is respectively arranged on the upper end face and the lower end face of the matrix; a piston rod is arranged on the glue inlet and outlet control device; and a glue discharging control device is arranged above the piston rod.
The invention has the beneficial effects that the upper end and the lower end of the base body are respectively provided with only one water drop type groove, the glue is directly communicated with the feed inlet, the feed channel in the base body is independent, the structure of the base body is simplified, the metering valve is modularized, the working stroke of the glue is shortened, and the problem of the glue in the flowing process is reduced. The induction device is driven to be lifted to a designated position through the screw rod, the glue enters the cylinder sleeve to push the piston rod until the induction device induces the piston rod to stop injecting the glue, the glue is effectively prevented from overflowing from one end of the piston rod to the other end of the piston rod by the plug ring, the accuracy of the glue quantity is ensured, and the accuracy and the stability of glue injection are strictly controlled.
Further, the feed inlet is arranged at the bottom of the drop-shaped groove. The feed liquid is convenient to enter the substrate. The feeding port is directly connected with an external rubber supply pipeline, so that the internal pipeline of the matrix is simplified.
Further, the upper end of the drop-shaped groove is provided with an air valve body; and a valve core is arranged in the air valve body. The material liquid is controlled to enter and exit through the air valve body.
Furthermore, the valve core is opposite to the discharge port of the water drop type groove, and the inflow and outflow of glue are controlled through the extension and retraction of the valve core. Through jack-up and the withdrawal of case, the effectual opening and the closing of control feed inlet, discharge gate, easy operation is convenient, and speed efficiency is also high.
Further, a boss is arranged in the drop-shaped groove; the discharge hole is arranged at the center of the boss; the height of the discharge hole is lower than the outer edge surface of the water drop type groove. The boss is higher than the discharge port, so that glue can be prevented from directly entering the discharge port when glue injection is started. Glue in the groove is convenient to flow into the discharge hole, and the material diaphragm is matched, so that the glue inlet and outlet processes are realized under the adjustment of the extending and retracting states of the valve core in the air valve body, the sealing performance of the drop-shaped groove is also convenient to maintain better, and glue leakage is avoided.
Furthermore, the lower end of the valve core is provided with a spring, so that the valve core cannot be lifted by pressing the material when the on-off switching of the feeding and discharging materials is avoided. By applying a retractive force to the valve core, the valve core is convenient to return to a retractive working position, and meanwhile, when the on-off switching of the feeding and discharging materials is carried out, the valve core cannot be lifted by the material pressing, so that the inflow and removal process of glue water is influenced.
Further, the upper end of the valve core is provided with a pneumatic diaphragm; the pneumatic diaphragm is deformed under the action of air pressure to control the working state of the valve core. When the air pipe on the air valve body is ventilated through the electromagnetic valve, the air pressure enables the pneumatic diaphragm to deform, the valve core clung to the pneumatic diaphragm is jacked up along with the air pressure, and the feeding hole and the discharging hole are blocked, so that the fluidity of glue is regulated, and the glue does not enter the glue injection head any more.
Further, the glue pouring control device comprises a screw rod, a cylinder sleeve, a fixing device and an external connecting plate; a universal plug ring is arranged on the piston rod; the piston rod and the cylinder sleeve form a semi-closed cylinder sleeve inner cavity. Glue enters the cylinder sleeve through the feed inlet to push the piston rod to move upwards, so that the lifting position of the screw rod is reached to stop, and the accurate glue amount is controlled. The universal plug ring effectively avoids glue from flowing into the other end of the piston rod from one end of the piston rod, and ensures the accuracy of glue output.
Further, an aluminum box is arranged on the screw rod; an induction device is arranged in the aluminum box. The position of the piston rod is sensed by the sensing device, and the glue stops being injected when the piston rod is in place.
Further, a connecting block is arranged on the screw rod; a round hole is formed in the middle of the connecting block and used for penetrating through the screw rod; the screw rod is fixed with the connecting block through a fixing device; the front end of the connecting block is connected with the aluminum box; the rear end of the connecting block is fixed with an external connecting plate. Through the effect of connecting block, guaranteed that the lead screw can accurately control the lift height for the glue volume that the lead screw lift height ensured is accurate.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a piston metering valve of the present invention;
FIG. 2 is an exploded view of a piston metering valve of the present invention;
FIG. 3 is a schematic view of a piston metering valve according to the present invention;
FIG. 4 is a top view of a piston metering valve base of the present invention;
FIG. 5 is a block diagram of a piston metering valve drive unit according to the present invention;
FIG. 6 is a schematic view of a piston metering valve body of the present invention;
FIG. 7 is a side view of an air valve body of a piston metering valve of the present invention;
FIG. 8 shows the state of the valve core of the piston metering valve during the glue feeding process;
FIG. 9 shows the state of the valve core in the process of discharging the glue from the valve body of the piston type metering valve;
FIG. 10 is a diagram of the operation of a piston metering valve of the present invention.
Corresponding part names indicated by numerals in the drawings:
1. Glue in and out control device; 2. a glue control device is arranged; 3. a connecting block; 4. a drop-shaped groove; 5. a feed inlet; 6. a discharge port; 7. a boss; 8. a material membrane; 9. cylinder sleeve; 10. a piston rod; 11. a piston rod is covered with a stopper ring; 12. a screw rod; 13. an induction device; 14. a valve core; 15. a spring; 16. a pneumatic diaphragm; 17. an air valve body; 18. a base; 19. an external glue supply hole; 20. a fixed block; 21. a round hole; 22. an external connection board; 23. a fixing device; 24. an aluminum box; 25. an upper valve core; 26. a lower valve core; 27. an adapter plate; 28. a boss on the outer edge surface of the drop-shaped groove; 29. and a valve core mounting body.
Detailed Description
The following describes the present invention in further detail with reference to specific examples:
The invention aims to provide a piston type metering valve device which can strictly control the glue amount and can stably inject glue.
As shown in fig. 1,2, 3, 4 and 10, in order to solve the above problems, the present invention provides a piston metering valve device, comprising:
glue in and out control device 1;
The glue in-out control device 1 is provided with a matrix 18; the upper surface of the matrix 18 is provided with a water drop type groove 4; the drop-shaped groove 4 is provided with a feed inlet 5 and a discharge outlet 6, and is only used for one glue, so as to avoid glue stringing; the glue inlet and outlet control device 1 is provided with an adapter plate 27; the adapter plate 27 is provided with an external rubber supply pipeline 19; the feed inlet 5 is directly communicated with an external glue supply pipeline 19 and is used for enabling external glue to directly flow into the water drop-shaped groove 4; only one water drop type groove 4 is respectively arranged on the upper end face and the lower end face of the matrix 18; a piston rod 10 is arranged on the glue inlet and outlet control device 1; a glue dispensing control device 2 is arranged above the piston rod 10.
The invention has the beneficial effects that the upper end and the lower end of the matrix 18 are respectively provided with only one water drop type groove 4, and the glue is directly communicated with the feed inlet 5, so that the feed channel in the matrix 18 is independent, the structure of the matrix 18 is simplified, the metering valve is modularized, the working stroke of the glue is shortened, and the problem of the glue in the flowing process is reduced. The induction device 13 is driven to be lifted to a designated position through the screw rod 12, the glue enters the cylinder sleeve 9 to push the piston rod 10 until the induction device 13 induces the piston rod 10 to stop injecting the glue, the glue is effectively prevented from overflowing from one end of the piston rod 10 to the other end of the piston rod 10 by the plug ring 11, the accuracy of the glue quantity is ensured, and the accuracy and the stability of glue injection are strictly controlled.
Further, the feed inlet 5 is disposed at the bottom of the drop-shaped groove 4. Facilitating the entry of feed liquid into the matrix 18. The direct connection of the feed inlet 5 to the external supply conduit simplifies the internal piping of the base 18.
Further, the upper end of the drop-shaped groove 4 is provided with an air valve body 17; a valve core 14 is arranged in the air valve body 17. The feeding and discharging of the feed liquid is controlled by an air valve body 17.
Further, the valve core 14 is opposite to the discharge port 6 of the drop-shaped groove 4, and the inflow and outflow of glue is controlled by the extension and retraction of the valve core 14. Through the jack-up and the withdrawal of case 14, effectual control feed inlet 5, the opening and the closing of discharge gate 6, easy operation is convenient, and speed efficiency is also high.
In practice, the base 18 is a bridge connecting the valve body 17, the pipe, and the cylinder liner 9. Under the regulation of the action of the valve body 17, the glue regularly enters the cylinder sleeve 9 from the material pipe. Simultaneously, the feeding port 5 and the discharging port 6 on the matrix 18 are matched with the cylinder sleeve 9 under the action of the valve core 14, so that the feeding and discharging states are regularly controlled. Glue flows in from the built-in hole on the upper part of the base body 18, overflows into the feed inlet 5 in the center of the water drop-shaped groove 4 after filling the water drop-shaped groove 4, flows upwards to the cylinder sleeve 9 along the glue channel in the base body 18, and when the glue amount reaches a specific value, the glue is extruded again as described above.
Further, a boss 7 is arranged in the drop-shaped groove 4; the discharge hole 6 is arranged at the center of the boss 7; the height of the discharge hole 6 is lower than the outer edge surface of the water drop type groove 4. The boss 7 is higher than the discharge hole 6, so that glue can be prevented from directly entering the discharge hole 6 when glue injection is started. Glue in the groove conveniently flows into the discharge hole 6, and is matched with the material membrane 8, so that the glue inlet and outlet processes are realized under the adjustment of the extending and retracting states of the valve core 14 in the air valve body 17, the sealing performance of the drop-shaped groove 4 is also conveniently and better maintained, and glue leakage is avoided.
As shown in fig. 6, a spring 15 is further designed at the lower end of the valve core 14, so that the valve core 14 is prevented from being jacked by the material when the on-off switching of the feeding and discharging materials is performed. By applying a retractive force to the valve core 14, the valve core 14 is convenient to return to a retractive working position, and meanwhile, when the on-off switching of the feeding and discharging materials is carried out, the valve core 14 cannot be jacked by the material, so that the feeding and discharging process of glue water is influenced.
Further, the upper end of the valve core 14 is provided with a pneumatic diaphragm 16; the pneumatic diaphragm 16 is deformed by the air pressure to control the operation state of the valve element 14. When the air pipe on the air valve body 17 is ventilated through the electromagnetic valve, the air pressure enables the pneumatic diaphragm 16 to deform and bulge, the valve core 14 which is tightly attached to the pneumatic diaphragm 16 is jacked up along with the pneumatic diaphragm, and the feed inlet 5 and the discharge outlet 6 are plugged, so that the fluidity of glue is regulated, and the glue does not enter the glue injection head any more.
As shown in fig. 5, further, the glue dispensing control device 2 comprises a screw rod 12, a cylinder sleeve 9, a fixing device 23 and an external connecting plate 22; a universal plug ring 11 is arranged on the piston rod 10; the piston rod 10 and the cylinder sleeve 9 form a semi-closed inner cavity of the cylinder sleeve 9. Glue enters the cylinder sleeve 9 through the feeding hole 5 to push the piston rod 10 to move upwards, and the lifting position of the screw rod 12 is reached to stop, so that the accurate glue amount is controlled. The universal plug ring 11 effectively prevents glue from flowing into the other end of the piston rod 10 from one end of the piston rod 10, and ensures the accuracy of glue output.
Further, an aluminum box 24 is arranged on the screw rod 12; the aluminum box 24 is internally provided with an induction device 13. The position of the piston rod 10 is sensed by the sensing means 13 and the glue injection is stopped when the piston rod 10 is in place.
Further, a connecting block 20 is arranged on the screw rod 12; a round hole 21 is formed in the middle of the fixed block 20 and used for penetrating through the screw rod 12; the screw rod 12 is fixed with the fixed block 20 through a fixing device 23; the front end of the fixed block 20 is connected with the aluminum box 24; the rear end of the fixing block 20 is fixed with an external connection plate 22. Through the action of the fixing block 20, the lifting height of the screw rod 12 can be accurately controlled, so that the glue amount ensured by the lifting height of the screw rod 12 is accurate.
In actual operation, as shown in fig. 7 to 9, when the piston metering valve is in a glue feeding state in a working state, the screw rod 12 firstly executes an instruction, so that the aluminum box 24 is lifted to a corresponding height, meanwhile, the electromagnetic valve state of the upper valve core 25 and the lower valve core 26 of the air valve body 17 is adjusted, so that the upper valve core 25 of the air valve body 17 is retracted, the lower valve core 26 is extended, when external glue flows into the fed water drop-shaped groove 4, the material pressure pushes up the material membrane 8, glue flows into the discharge hole 6, and when the glue flows into the inner cavity of the cylinder sleeve 9 from the discharge hole 6, the material pressure pushes up the piston rod 10 until the piston rod 10 is lifted up to be sensed by the sensing device 13 in the aluminum box 24. When the piston metering valve is in a glue outlet state in a working state, after the piston rod 10 lifted by glue is sensed by the sensing device 13, the screw rod 12 can execute a pressing command, meanwhile, the valve body 17 is regulated, the electromagnetic valve of the valve core 14 can switch states, the upper valve core 25 on the valve body 17 stretches out, the lower valve core 26 retracts, when external glue flows into the fed water drop-shaped groove 4, the material pressure can not lift the material membrane 8 due to the stretching out of the upper valve core 25, at the moment, the glue in the cylinder sleeve 9 can move downwards along with the screw rod 12 and be extruded into the water drop-shaped groove 4 on the lower end face of the base body 18, and the glue flowing into the water drop-shaped groove 4 on the lower end face of the base body 18 can lift the material membrane 8 due to the retracting state of the lower valve core 26 and enter the discharge hole 6 to be finally discharged.
In actual operation, a heating rod can be added, the heating rod is arranged on a module, the effect of heating glue is achieved according to heat transmissibility, and the viscosity of the glue is reduced. The heating block device belongs to an alternative device for the invention, since the working conditions of the invention itself are not specifically required for glue consistency. Because the viscosity of the glue is affected by temperature, a heating block is a good alternative device for maintaining the working efficiency in a working environment with a relatively low air temperature.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. A piston metering valve, comprising: glue in and out control device;
The glue inlet and outlet control device is provided with a substrate; the upper surface of the matrix is provided with a water drop type groove; the drop-shaped groove is provided with a feed inlet and a discharge outlet and is only used for one glue, so that the glue is prevented from being stringed; the glue inlet and outlet control device is provided with an adapter plate; the adapter plate is provided with an external glue supply pipeline; the feed inlet is directly communicated with an external glue supply pipeline and is used for enabling external glue to directly flow into the drop-shaped groove; only one water drop type groove is respectively arranged on the upper end face and the lower end face of the matrix; a piston rod is arranged on the glue inlet and outlet control device; a glue discharging control device is arranged above the piston rod;
the feed inlet is arranged at the bottom of the drop-shaped groove;
the upper end of the drop-shaped groove is provided with an air valve body; a valve core is arranged in the air valve body;
The valve core is opposite to the discharge port of the water drop type groove, and the inflow and outflow of glue are controlled through the extension and retraction of the valve core;
the upper end of the valve core is provided with a pneumatic diaphragm; the pneumatic diaphragm is deformed under the action of air pressure to control the working state of the valve core;
The glue pouring control device comprises a screw rod, a cylinder sleeve, a fixing device and an external connecting plate, wherein a general plug ring is arranged on the piston rod, and the piston rod and the cylinder sleeve form a semi-closed cylinder sleeve inner cavity;
An aluminum box is arranged on the screw rod, and an induction device is arranged in the aluminum box.
2. The piston metering valve of claim 1 wherein: a boss is arranged in the drop-shaped groove; the discharge hole is arranged at the center of the boss; the height of the discharge hole is lower than the outer edge surface of the water drop type groove.
3. The piston metering valve of claim 2 wherein: the lower end of the valve core is provided with a spring, so that the valve core cannot be lifted by pressing the material when the on-off switching of the feeding and discharging materials is avoided.
4. A piston metering valve as claimed in claim 3 wherein: the screw rod is provided with a connecting block; a round hole is formed in the middle of the connecting block and used for penetrating through the screw rod; the screw rod is fixed with the connecting block through a fixing device; the front end of the connecting block is connected with the aluminum box; the rear end of the connecting block is fixed with an external connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830766.0A CN108999982B (en) | 2018-07-25 | 2018-07-25 | Piston type metering valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830766.0A CN108999982B (en) | 2018-07-25 | 2018-07-25 | Piston type metering valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108999982A CN108999982A (en) | 2018-12-14 |
| CN108999982B true CN108999982B (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830766.0A Active CN108999982B (en) | 2018-07-25 | 2018-07-25 | Piston type metering valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108999982B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113578668B (en) * | 2021-08-08 | 2023-01-03 | 苏州红杉自动化科技有限公司 | Glue filtering device |
| CN113843102A (en) * | 2021-10-12 | 2021-12-28 | 苏州特瑞特机器人有限公司 | Processing method for 5G base station element |
| CN116060271A (en) * | 2021-11-01 | 2023-05-05 | 苏州卓兆点胶股份有限公司 | Dispensing method for electronic product processing |
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|---|---|
| CN108999982A (en) | 2018-12-14 |
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