Pneumatic injection valve and electronic packaging production line

Abstract

The utility model belongs to the technical field of fluid injection, and discloses a pneumatic injection valve and an electronic packaging production line, the pneumatic injection valve comprises a valve body, a driving assembly, a sliding assembly and a speed reduction assembly, the valve body is internally provided with a driving cavity, a material sealing hole and a glue cavity which are communicated in sequence, and the valve body is further provided with a feeding hole and an injection hole which are communicated with the glue cavity; the driving assembly comprises an air source and an electromagnetic valve; the sliding assembly comprises a piston and a firing pin, the piston is arranged in the driving cavity in a sliding mode so as to divide the driving cavity into a first cavity body and a second cavity body, and the valve body is further provided with a first connector communicating with the first cavity body and a second connector communicating with the second cavity body; the output end of the electromagnetic valve is communicated with the first connector and the second connector so as to control connection and disconnection between the air source and the first connector and the second connector. The firing pin sequentially penetrates through the second cavity, the material sealing hole and the glue cavity, and the firing pin is in sliding sealing fit with the material sealing hole; the speed reduction assembly is arranged between the valve body and the piston and used for reducing the moving speed of the piston in the direction away from the glue cavity.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid injection technical field especially relates to a pneumatic injection valve and electronic packaging production line. BACKGROUND

[0002] Precise fluid injection technology is a new method of manufacturing micro-nano mechanism and device, which is more and more widely applied in micro-electromechanical, micromechanical component and micro-fabrication of drug material. At present, the injection valve on the market can be divided into pneumatic injection valve and piezoelectric injection valve according to the driving mode, wherein, the pneumatic injection valve has the advantages of simple structure, long service life and low cost, and is widely used in the field of electronic packaging.

[0003] However, the existing pneumatic injection valve is prone to cause air bubbles in liquid material during injection, which affects the injection effect and product quality.

[0004] Therefore, it is urgent to provide a pneumatic injection valve and electronic packaging production line to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a pneumatic injection device and electronic packaging production line, which can prevent air bubbles in liquid material, improve the injection effect and improve the product quality.

[0006] To achieve this purpose, the utility model adopts the following technical scheme:

[0007] A pneumatic injection valve, comprising:

[0008] A valve body is provided with a driving cavity, a material sealing hole and a glue cavity in sequence, and a feeding hole and an injection hole are further provided on the valve body and communicated with the glue cavity;

[0009] A driving assembly comprises a gas source and a solenoid valve, and the input end of the solenoid valve is communicated with the gas outlet end of the gas source;

[0010] A sliding assembly comprises a piston and a striker, the piston is slidably arranged in the driving cavity and approaches or away from the glue cavity, so as to divide the driving cavity into a first cavity away from the glue cavity and a second cavity close to the glue cavity, a first interface and a second interface are further provided on the valve body, the first interface is communicated with the first cavity, and the second interface is communicated with the second cavity; the output end of the solenoid valve is respectively communicated with the first interface and the second interface, the solenoid valve is used for controlling the on-off of gas between the gas source and the first interface and the second interface; the striker is arranged on one side of the piston close to the second cavity, the striker is sequentially arranged in the second cavity, the material sealing hole and the glue cavity, and the striker is slidably sealed with the material sealing hole;

[0011] A deceleration assembly is arranged between the valve body and the piston to reduce the speed of the piston moving away from the glue cavity.

[0012] Further, the deceleration assembly comprises a damper, one end of which is connected to the inner wall of the driving cavity, and the other end is connected to the piston.

[0013] Further, the deceleration assembly further comprises an elastic member, which is arranged between the inner wall of the driving cavity and the piston.

[0014] Further, the elastic member is arranged separately from the damper.

[0015] Further, the elastic member is sleeved on the damper.

[0016] Further, the driving assembly further comprises a gas tank, which is arranged between the gas source and the electromagnetic valve.

[0017] Further, the driving assembly further comprises a pressure increasing valve, which is arranged between the gas source and the gas tank.

[0018] Further, the driving assembly further comprises a pressure reducing valve, which is arranged between the gas tank and the electromagnetic valve.

[0019] Further, the driving assembly further comprises a check valve, which is arranged between the pressure reducing valve and the electromagnetic valve.

[0020] An electronic packaging production line comprises a transmission assembly for transporting a workpiece to outside the injection hole, and a pneumatic injection valve capable of injecting liquid material to a packaging position of the workpiece through the injection hole.

[0021] The utility model discloses the beneficial effects of:

[0022] The utility model provides a kind of pneumatic injection valve and electronic packaging production line, including valve body, drive assembly, sliding assembly and deceleration component, driving cavity, material sealing hole and glue cavity are sequentially communicated and are equipped in valve body, material sealing hole and injection hole that are communicated with glue cavity are also provided on valve body;Drive assembly includes gas source and electromagnetic valve, the input end of electromagnetic valve is communicated with the outlet end of gas source;Sliding assembly includes piston and striker, piston is slidably arranged in driving cavity along the direction of approaching or away from glue cavity, to separate driving cavity into the first cavity body away from glue cavity and the second cavity body close to glue cavity, first interface and second interface are also provided on valve body, first interface is communicated with first cavity body, and second interface is communicated with second cavity body;The output end of electromagnetic valve is respectively communicated with first interface and second interface, and electromagnetic valve is used to control the on-off of gas between gas source and first interface and second interface, to switch the sliding direction of piston;Striker is arranged on the side of piston close to second cavity body, striker is sequentially arranged in second cavity body, material sealing hole and glue cavity, and striker is slidably sealed in material sealing hole;Deceleration component is arranged between valve body and piston, for reducing the speed of piston moving away from glue cavity direction. When electromagnetic valve controls second interface and gas source communication, gas enters second cavity body through second interface, to drive piston to drive striker to move away from glue cavity direction, by setting deceleration component between valve body and piston, the speed of piston moving away from glue cavity direction is reduced, so as to reduce the speed of striker withdrawing from glue cavity, to prevent the formation of negative pressure in glue cavity, to avoid the generation of gas bubble in liquid material, to improve the effect of injection, improve product quality. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure diagram of the utility model provides pneumatic injection valve.

[0024] In the figure:

[0025] 1, valve body;11, driving cavity;111, first cavity body;112, second cavity body;12, material sealing hole;13, glue cavity;14, feed hole;15, injection hole;16, first interface;17, second interface;

[0026] 2, drive assembly;21, gas source;22, electromagnetic valve;23, gas storage tank;24, pressure increasing valve;25, pressure reducing valve;26, check valve;

[0027] 3, sliding assembly;31, piston;32, striker;

[0028] 4, deceleration component;41, damper;42, elastic member. DETAILED DESCRIPTION

[0029] The utility model will be described further in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0030] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include direct contact between the first and second features, or indirect contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0033] As Figure 1As shown, the embodiment provides a pneumatic injection valve, comprising a valve body 1, a driving assembly 2, a sliding assembly 3 and a deceleration assembly 4, the valve body 1 is provided with a driving cavity 11, a sealing hole 12 and a glue cavity 13 which are communicated in sequence, and the valve body 1 is further provided with a feeding hole 14 and an injection hole 15 which are communicated with the glue cavity 13; the driving assembly 2 comprises a gas source 21 and a solenoid valve 22, the input end of the solenoid valve 22 is communicated with the gas outlet end of the gas source 21; the sliding assembly 3 comprises a piston 31 and a striker 32, the piston 31 is slidably arranged in the driving cavity 11 in the direction of approaching or moving away from the glue cavity 13, so as to divide the driving cavity 11 into a first cavity 111 which is away from the glue cavity 13 and a second cavity 112 which is close to the glue cavity 13, and the valve body 1 is further provided with a first interface 16 and a second interface 17, the first interface 16 is communicated with the first cavity 111, and the second interface 17 is communicated with the second cavity 112; the output end of the solenoid valve 22 is communicated with the first interface 16 and the second interface 17 respectively, and the solenoid valve 22 is used for controlling the on-off of the gas between the gas source 21 and the first interface 16 and the second interface 17, so as to switch the sliding direction of the piston 31; the striker 32 is arranged on the side of the piston 31 close to the second cavity 112, the striker 32 is sequentially arranged in the second cavity 112, the sealing hole 12 and the glue cavity 13, and the striker 32 is slidably sealed with the sealing hole 12; the deceleration assembly 4 is arranged between the valve body 1 and the piston 31, and is used for reducing the speed of the piston 31 moving away from the glue cavity 13.

[0034] The liquid material enters the glue cavity 13 through the feeding hole 14, when the solenoid valve 22 controls the first interface 16 to be communicated with the gas source 21, the gas enters the first cavity 111 through the first interface 16, drives the piston 31 to move in the direction of approaching the glue cavity 13, and the piston 31 drives the striker 32 to impact the cavity wall of the glue cavity 13, so as to extrude the liquid material and make the liquid material be sprayed out through the injection hole 15; when the solenoid valve 22 controls the second interface 17 to be communicated with the gas source 21, the gas enters the second cavity 112 through the second interface 17, so as to drive the piston 31 to drive the striker 32 to move away from the glue cavity 13, the space in the glue cavity 13 becomes larger, and the liquid material is injected into the glue cavity 13 through the feeding hole, so as to carry out the next injection, and the above process is repeated.

[0035] When the piston 31 drives the striker 32 to move away from the glue cavity 13, because the movement speed of the striker 32 is fast, the negative pressure is formed in the glue cavity 13, which causes the bubbles to be easily generated in the liquid material in the glue cavity 13, and affects the injection effect. In order to solve the above problem, the pneumatic injection valve of the embodiment reduces the speed of the piston 31 moving away from the glue cavity 13 by arranging the deceleration assembly 4 between the valve body 1 and the piston 31, so as to reduce the speed of the striker 32 withdrawing from the glue cavity 13, prevent the negative pressure from being formed in the glue cavity 13, avoid the bubbles to be generated in the liquid material, and achieve the effects of improving the injection effect and improving the product quality.

[0036] Specifically, the deceleration assembly 4 comprises a damper 41, one end of the damper 41 is connected to the inner wall of the driving cavity 11, and the other end is connected to the piston 31. When the piston 31 moves away from the glue cavity 13, that is, the piston 31 extrudes the damper 41, the damper 41 provides a larger resistance to the piston 31, thereby reducing the speed of the piston 31 driving the striker 32 to withdraw from the glue cavity 13; when the piston 31 moves towards the glue cavity 13, that is, the piston 31 stretches the damper 41, the damper 41 provides a smaller resistance to the piston 31, avoiding affecting the speed of the piston 31 driving the striker 32 to impact the cavity wall of the glue cavity 13, thereby ensuring the spraying effect. The specific structure of the damper 41 belongs to the prior art and will not be described here.

[0037] Further, the deceleration assembly 4 further comprises a resilient member 42, which is arranged between the inner wall of the driving cavity 11 and the piston 31. The resilient member 42 can provide resistance to the movement of the piston 31 away from the glue cavity 13, to further reduce the speed of the piston 31 driving the striker 32 to withdraw from the glue cavity 13; and the restoring force of the resilient member 42 can provide power for the movement of the piston 31 towards the glue cavity 13, thereby increasing the speed of the piston 31 driving the striker 32 to impact the cavity wall of the glue cavity 13, which is beneficial to improve the spraying effect. The resilient member 42 can be, but is not limited to, a spring, and is not limited here.

[0038] In the present embodiment, the resilient member 42 is arranged in the first cavity 111. When the piston 31 moves away from the glue cavity 13, the piston 31 extrudes the resilient member 42, and the resilient member 42 forms a resistance to the piston 31. The resilient member 42 can be arranged on the inner wall of the first cavity 111; or the resilient member 42 can be arranged on the piston 31; or the resilient member 42 can have one end connected to the piston 31 and the other end connected to the inner wall of the first cavity 111; or the resilient member 42 can be freely placed in the first cavity 111, all of which can provide resistance to the movement of the piston 31 away from the glue cavity 13 and power for the movement of the piston 31 towards the glue cavity 13.

[0039] In other embodiments, the resilient member 42 can also be arranged in the second cavity 112, and one end of the resilient member 42 is connected to the inner wall of the second cavity 112 and the other end is connected to the piston 31. When the piston 31 moves away from the glue cavity 13, the piston 31 stretches the resilient member 42, and the resilient member 42 generates a pulling force to the piston 31 to hinder the movement of the piston 31. When the piston 31 moves towards the glue cavity 13, the restoring force of the resilient member 42 can provide power for the piston 31, thereby increasing the speed of the piston 31 driving the striker 32 to impact the cavity wall of the glue cavity 13, which is beneficial to improve the spraying effect.

[0040] Further, the resilient member 42 can be arranged separately from the damper 41 to facilitate the installation and disassembly of the pneumatic injection valve.

[0041] Optionally, the elastic member 42 can also be sleeved on the damper 41 to save the space in the first cavity 111, so as to increase the number of the deceleration assembly 4, balance the force on the piston 31, and further improve the spraying effect.

[0042] In addition, the driving assembly 2 further comprises a gas storage tank 23 arranged between the gas source 21 and the electromagnetic valve 22, for storing compressed gas. Before work, the gas storage tank 23 first stores a certain amount of compressed gas, so as to prevent the gas supplied by the gas source 21 from being insufficient when the pneumatic injection valve works continuously, or the gas flow and gas pressure supplied by the gas source 21 from being unstable, and ensure that the driving assembly 2 can continuously provide stable power.

[0043] Further, the driving assembly 2 further comprises a pressure increasing valve 24 arranged between the gas source 21 and the gas storage tank 23, which can increase the gas pressure of the compressed gas entering the gas storage tank 23, thereby increasing the gas pressure of the gas output by the electromagnetic valve 22, increasing the impact force of the striker 32, improving the spraying force, making the pneumatic injection valve applicable to spray liquid materials with high viscosity, increasing the spraying distance, improving the spraying effect, and meeting the production needs of customers.

[0044] In order to facilitate the control of gas pressure, the driving assembly 2 further comprises a pressure reducing valve 25 arranged between the gas storage tank 23 and the electromagnetic valve 22, which can reduce the compressed gas in the gas storage tank 23 to a specified pressure value, and then output to the first interface 16 or the second interface 17 through the electromagnetic valve 22, which is beneficial to improve the stability of the output gas pressure of the driving mechanism, and further improve the spraying effect.

[0045] Further, the driving assembly 2 further comprises a check valve 26 arranged between the pressure reducing valve 25 and the electromagnetic valve 22, which can prevent the reverse flow of gas, and is beneficial to prolong the service life of the driving assembly 2.

[0046] In addition, the embodiment also provides an electronic packaging production line, which comprises a transmission assembly and the pneumatic injection valve in any of the above embodiments. The transmission assembly is used for transporting a workpiece to the outside of the injection hole 15, and the pneumatic injection valve can spray liquid material to the packaging position of the workpiece through the injection hole 15, so as to package the workpiece. By applying the above pneumatic injection valve, the gas bubbles in the liquid material can be prevented, the spraying effect can be improved, the packaging effect can be improved, and the product quality can be improved.

[0047] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A pneumatic injection valve, characterized in that, include: The valve body (1) is provided with a drive chamber (11), a sealing hole (12) and a glue chamber (13) connected in sequence. The valve body (1) is also provided with a feed hole (14) and a spray hole (15) connected to the glue chamber (13). The drive assembly (2) includes an air source (21) and a solenoid valve (22), wherein the input end of the solenoid valve (22) is connected to the air outlet end of the air source (21); The sliding assembly (3) includes a piston (31) and a striking pin (32). The piston (31) is slidably disposed in the drive cavity (11) in a direction close to or away from the rubber cavity (13) to divide the drive cavity (11) into a first cavity (111) away from the rubber cavity (13) and a second cavity (112) close to the rubber cavity (13). The valve body (1) is also provided with a first interface (16) and a second interface (17). The first interface (16) communicates with the first cavity (111), and the second interface (17) communicates with the second cavity (112). The output end of the solenoid valve (22) is connected to the first interface (16) and the second interface (17) respectively. The solenoid valve (22) is used to control the flow of gas between the gas source (21) and the first interface (16) and the second interface (17). The impact pin (32) is disposed on the side of the piston (31) near the second cavity (112). The impact pin (32) passes through the second cavity (112), the sealing hole (12) and the glue cavity (13) in sequence, and the impact pin (32) is slidably sealed to the sealing hole (12). A deceleration assembly (4) is disposed between the valve body (1) and the piston (31) to reduce the speed at which the piston (31) moves away from the rubber cavity (13).

2. The pneumatic injection valve according to claim 1, characterized in that, The deceleration assembly (4) includes a damper (41), one end of which is connected to the inner wall of the drive chamber (11) and the other end is connected to the piston (31).

3. The pneumatic injection valve according to claim 2, characterized in that, The deceleration assembly (4) further includes an elastic element (42), which is disposed between the inner wall of the drive cavity (11) and the piston (31).

4. The pneumatic injection valve according to claim 3, characterized in that, The elastic element (42) and the damper (41) are spaced apart.

5. The pneumatic injection valve according to claim 3, characterized in that, The elastic element (42) is sleeved on the damper (41).

6. The pneumatic injection valve according to any one of claims 1 to 5, characterized in that, The drive assembly (2) also includes an air storage tank (23), which is disposed between the air source (21) and the solenoid valve (22).

7. The pneumatic injection valve according to claim 6, characterized in that, The drive assembly (2) also includes a pressure boosting valve (24), which is located between the gas source (21) and the gas storage tank (23).

8. The pneumatic injection valve according to claim 7, characterized in that, The drive assembly (2) also includes a pressure reducing valve (25), which is disposed between the gas storage tank (23) and the solenoid valve (22).

9. The pneumatic injection valve according to claim 8, characterized in that, The drive assembly (2) also includes a check valve (26), which is disposed between the pressure reducing valve (25) and the solenoid valve (22).

10. An electronic packaging production line, characterized in that, Includes a transfer assembly and a pneumatic injection valve as described in any one of claims 1 to 9, the transfer assembly being used to transport the workpiece outside the injection hole (15), and the pneumatic injection valve being able to inject liquid material through the injection hole (15) to the position of the workpiece to be packaged.

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