A pinch valve and a glue dispensing module comprising the same

Abstract

The utility model relates to the field of dispensing equipment manufacturing technology, especially a pinch valve and the dispensing module including it. The pinch valve includes a valve body, a hose, a plug body, a clamping execution assembly and a drive part; the hose is inserted into the plug body to form an integrated plug module; the integrated plug module is integrally installed in or removed from the valve body; the clamping execution assembly is assembled based on the valve body; the drive part is in transmission connection with the clamping execution assembly and is used to drive the clamping execution assembly to execute the hose clamping or hose releasing action. When the hose needs to be replaced, the core components such as the clamping execution assembly and the drive part in the valve body do not need to be disassembled, only the integrated plug module needs to be integrally taken out from the valve body and replaced, and the maintenance operation can be completed. In this way, not only the operation time for replacing the hose is greatly shortened, but also the assembly error of the components such as the clamping execution assembly and the drive part in the disassembly and reassembly process is eliminated.

Description

Technical Field

[0001] This utility model relates to the field of dispensing equipment manufacturing technology, and in particular to a clamp-type shut-off valve and a dispensing module including the same. Background Technology

[0002] In the field of fluid control, clamp-type shut-off valves are widely used in dispensing processes that require precise control of fluid flow due to their advantages such as compact structure and fast on / off response. They achieve the cut-off and opening of the glue delivery path by clamping the hose, which directly affects the dispensing accuracy and product yield. The conventional structure of existing clamp-type gate valves includes a valve body, a hose for conveying adhesive, and clamping and actuation components integrated within the valve body. To ensure the hose remains stable during fluid delivery and to prevent displacement due to adhesive pressure fluctuations or clamping impacts, traditional designs generally employ a fixed structure. This means the hose is inserted into a pre-drilled mounting hole in the valve body and secured by interference fit or adhesive bonding. However, the aforementioned traditional design has revealed significant defects in long-term practical use: the on / off function of the known clamp-type shut-off valve relies on the drive component to apply opposing pressure to the hose, causing the inner wall of the hose to fit tightly to cut off the glue passage; after the drive component is depressurized, the passage is restored by releasing the hose. Since the dispensing process requires high-frequency control of glue on / off (such as in electronic component packaging scenarios, the number of on / off cycles often reaches dozens per minute), the hose must continuously withstand the periodic opposing pressure applied by the clamping component, causing its compression area to be in a state of cyclic stress of repeated stress, deformation, and rebound for a long time, which leads to the following problems: First, the fixed interface between the hose and the valve body is prone to sealing failure or pipe wall cracking due to long-term stress concentration; second, the clamping area of ​​the hose gradually thins due to repeated fatigue wear, which will eventually lead to glue leakage, thus affecting the stability of the dispensing process. More importantly, when the hose is damaged due to long-term and frequent opposing compression, since the hose is directly fixed to the valve body and has no independent disassembly structure, replacing the damaged hose requires disassembling the clamping components, drive components, and other core components inside the valve body. After removing the old hose and installing the new hose, all disassembled components must be reassembled. Furthermore, the disassembly and reassembly process may interfere with the positioning accuracy of the clamping components or affect the assembly accuracy of the drive components, leading to subsequent problems such as delayed on / off response and uneven clamping force in the shut-off valve.

[0003] Therefore, it is imperative for those skilled in the art to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a tubular shut-off valve, which aims to solve the problems in the existing design where the hose is easily damaged due to long-term periodic opposing extrusion pressure, and after damage, the valve body core components need to be disassembled and replaced, which is cumbersome and can also affect the precision of the components and increase maintenance risks.

[0005] This utility model relates to a clamp-type shut-off valve, including a valve body, a hose, a plug-in body, a clamping actuation component, and a drive unit; the hose is inserted into the plug-in body, and the two form an integrated plug-in module; the integrated plug-in module is installed into or removed from the valve body as a whole; the clamping actuation component is assembled based on the valve body and is arranged corresponding to the hose; the drive unit is connected to the clamping actuation component for driving the clamping actuation component to perform clamping or releasing actions to cut off or open the fluid passage in the hose.

[0006] As a further improvement to the technical solution disclosed in this utility model, the insert body is provided with an insertion through hole and a clamping action avoidance notch; the insertion through hole is used to insert a flexible tube and extends along the length direction of the insert body; the clamping action avoidance notch is for the clamping execution component to extend into in order to perform a clamping action on the flexible tube, extends along the thickness direction of the insert body and communicates with the insertion through hole.

[0007] As a further improvement to the technical solution disclosed in this utility model, the flexible tube is fixed by glue after being inserted into the insertion through hole; multiple glue injection holes are formed on the insertion body; the glue injection holes are linearly and evenly distributed along the extension direction of the insertion through hole, and all of them are connected to the insertion through hole.

[0008] As a further improvement to the technical solution disclosed in this utility model, the insert body is also formed with an observation hole; the observation hole extends along the width direction of the insert body and communicates with the insertion through hole; the opening position of the observation hole corresponds to the same side or opposite side of the clamping action avoidance notch.

[0009] As a further improvement to the technical solution disclosed in this utility model, the clamping actuation component includes a first movable clamping member and a second movable clamping member; both the first movable clamping member and the second movable clamping member form a sliding pair with the valve body; the free end of the first movable clamping member is formed with a first clamping mating part, and the free end of the second movable clamping member is formed with a second clamping mating part; the first clamping mating part and the second clamping mating part cooperate to achieve clamping or releasing of the hose.

[0010] As a further improvement to the technical solution disclosed in this utility model, the driving part includes a first pneumatic driving chamber, a second pneumatic driving chamber, a first return spring, and a second return spring; both the first and second pneumatic driving chambers are formed inside the valve body, and the first pneumatic driving chamber is correspondingly arranged with the first movable clamping member, and the second pneumatic driving chamber is correspondingly arranged with the second movable clamping member; the first return spring is elastically compressed and assembled between the valve body and the first movable clamping member, while the second return spring is elastically compressed and assembled between the valve body and the second movable clamping member; when high-pressure gas is introduced into the first and second pneumatic driving chambers, the first movable clamping member overcomes the elastic force of the first return spring, and the second movable clamping member overcomes the elastic force of the second return spring, and the two move towards each other to cut off the hose; when the first and second pneumatic driving chambers are depressurized, the first and second return springs respectively drive the first and second movable clamping members to move in opposite directions to release the hose.

[0011] In addition, this utility model also discloses a dispensing module, including an adhesive supply unit, a dispensing needle, and a clamp-type shut-off valve; one end of the hose is sealed and connected to the outlet of the adhesive supply unit, and the other end is sealed and connected to the inlet of the dispensing needle; the clamp-type shut-off valve is used to control the opening and closing of the adhesive delivery path between the adhesive supply unit and the dispensing needle.

[0012] In practical applications, the pipe-type gate valve disclosed in this utility model can achieve at least the following beneficial technical effects, specifically: 1) When the hose needs to be replaced, there is no need to disassemble the core components such as the clamping actuator and drive unit inside the valve body. Simply remove the integrated plug-in module from the valve body and replace it with a new integrated plug-in module to complete the maintenance operation. This significantly reduces the time required for hose replacement, ensuring a rapid return to production. Furthermore, it avoids assembly errors that may occur during the disassembly and reassembly of the clamping actuator and drive unit, effectively reducing the risk of equipment malfunctions caused by maintenance operations. 2) The integrated plug-in module and valve body assembly effectively ensure that the hose maintains a stable position during fluid delivery, preventing displacement due to fluid pressure changes or the clamping action of the clamping actuator. Furthermore, the clamping actuator uses the valve body as a fixed assembly base and precisely corresponds to the hose position. Combined with the stable transmission of the drive unit, the drive unit drives the clamping actuator to apply uniform opposing compressive force to the hose to cut off the fluid passage. After the drive unit depressurizes, the clamping actuator can smoothly release the hose to restore fluid flow, ensuring rapid and precise response and control of the fluid passage, fully meeting the precision requirements of dispensing processes for fluid delivery. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional schematic diagram of the dispensing module disclosed in this utility model.

[0015] Figure 2 This is a three-dimensional schematic diagram of the clamp-type gate valve disclosed in this utility model.

[0016] Figure 3 yes Figure 2 The front view.

[0017] Figure 4 yes Figure 2 Side view.

[0018] Figure 5 yes Figure 4 AA sectional view.

[0019] Figure 6 This is a three-dimensional schematic diagram of the integrated plug-in module in the clamp-type shut-off valve disclosed in this utility model.

[0020] Figure 7 yes Figure 6 The front view.

[0021] Figure 8 yes Figure 7 BB cross-sectional view.

[0022] Figure 9 yes Figure 7 CC section view.

[0023] Figure 10 This is a three-dimensional schematic diagram of the insert body in the clamp-type shut-off valve disclosed in this utility model (with the hidden lines visible).

[0024] 1-Glue supply unit; 2-Dispensing needle; 3-Clamping shut-off valve; 31-Valve body; 32-Integrated plug-in module; 321-Hose; 322-Plug-in body; 3221-Insertion through hole; 3222-Clamping action avoidance notch; 3223-Glue injection hole; 3224-Observation hole; 33-Clamping execution component; 331-First movable clamping member; 3311-First clamping mating part; 332-Second movable clamping member; 3321-Second clamping mating part; 34-Drive unit; 341-First pneumatic drive chamber; 342-Second pneumatic drive chamber; 343-First return spring; 344-Second return spring. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments. Figure 1 A three-dimensional schematic diagram of the dispensing module disclosed in this utility model is shown. It is evident that it is mainly composed of several parts, including an adhesive supply unit 1, a dispensing needle 2, and a clamp-type shut-off valve 3. The clamp-type shut-off valve 3 serves as the core for controlling the on / off state of the adhesive delivery path, and it is connected to the adhesive supply unit 1 and the dispensing needle 2. Specifically, one end of the flexible tube in the clamp-type shut-off valve 3 is sealed and connected to the adhesive outlet of the adhesive supply unit 1, and the other end is sealed and connected to the adhesive inlet of the dispensing needle 2, thus constructing a complete adhesive delivery path. The clamp-type shut-off valve 3 is used to control the on / off state of the adhesive delivery path to meet the fluid control requirements of the dispensing process. like Figures 2-5 As shown, the clamp-type gate valve 3 mainly consists of a valve body 31, an integrated plug-in module 32, a clamping actuation component 33, and a drive unit 34. The valve body 31 serves as the overall assembly base for the clamp-type gate valve 3, providing installation support for the integrated plug-in module 32, the clamping actuation component 33, and the drive unit 34. The integrated plug-in module 32, as the core functional unit of the clamp-type gate valve 3, is detachably assembled with the valve body 31, allowing for quick replacement and maintenance by inserting or removing the entire module into or from the valve body 31. Figures 6-9 As shown, the integrated plug-in module 32 is composed of a hose 321 and a plug-in body 322. The plug-in body 322 has an installation structure adapted to the hose 321. The hose 321 is inserted into the plug-in body 322 and forms a stable connection, providing an object for the subsequent on / off control of the clamp-type shut-off valve 3. The clamping actuator 33 is assembled on the valve body 31, and its installation position precisely corresponds to the hose 321 in the integrated plug-in module 32, ensuring that the clamping actuator 33 accurately acts on the hose 321 when it is activated. The drive unit 34 forms a stable transmission connection with the clamping actuator 33, and outputs power to drive the clamping actuator 33 to perform clamping or releasing actions. In turn, the clamping actuator 33 clamps, squeezes, or releases and resets the hose 321, changing the internal passage state of the hose 321. When clamping, the inner wall of the hose 321 is pressed to cut off the fluid passage; when releasing, the hose 321 returns to its original state to open the fluid passage. Ultimately, the clamp-type shut-off valve 3 achieves precise control of the internal fluid transport, thereby ensuring the reliable realization of the on / off function of the clamp-type shut-off valve 3.

[0026] like Figure 10As shown, the plug-in body 322, as the core supporting structure of the integrated plug-in module 32, has an insertion through hole 3221, a clamping action avoidance notch 3222, an adhesive injection hole 3223, and an observation hole 3224. The insertion through hole 3221 extends along the length of the plug-in body 322 and serves as the installation channel for the flexible tube 321, enabling precise assembly between the flexible tube 321 and the plug-in body 322. To enhance the stability of the connection, after the flexible tube 321 is inserted into the insertion through hole 3221, adhesive can be injected through the adhesive injection hole 3223. The adhesive injection holes 3223 are linearly and evenly distributed along the extension direction of the insertion through hole 3221, and each adhesive injection hole 3223 is connected to the insertion through hole 3221, allowing the adhesive to evenly fill the gap between the flexible tube 321 and the insertion through hole 3221, preventing local loosening and further ensuring the reliability of the flexible tube 321's installation within the plug-in body 322. Similarly, Figure 10 As shown, the clamping action avoidance notch 3222 extends along the thickness direction of the insert body 322 and is in communication with the insertion through hole 3221 to adapt to the action requirements of the clamping execution component 33: when the clamping execution component 33 performs a clamping action on the hose 321 in the insertion through hole 3221, it can extend into the interior of the insert body 322 through the clamping action avoidance notch 3222 and directly act on the hose 321. The observation hole 3224 extends along the width of the plug-in body 322 and is also connected to the insertion through hole 3221. Its position corresponds to the same side or opposite side of the clamping action avoidance notch 3222. The staff can directly observe the usage status of the hose 321 through the observation hole 3224, such as whether the hose 321 is worn, cracked or otherwise damaged. The health status of the hose 321 can be monitored in real time without disassembling the integrated plug-in module 32, which makes it easier to judge the maintenance time in time and reduce the risk of production interruption caused by sudden damage to the hose 321. like Figure 5 As shown, the clamping actuation component 33 specifically includes a first movable clamping member 331 and a second movable clamping member 332. Both the first movable clamping member 331 and the second movable clamping member 332 form a sliding pair with the valve body 31, allowing them to move freely in directions of approaching or moving away from each other. The free end of the first movable clamping member 331 has a first clamping engagement portion 3311, and the free end of the second movable clamping member 332 has a second clamping engagement portion 3321. In practical applications, the first clamping engagement portion 3311 and the second clamping engagement portion 3321 cooperate. When the first clamping engagement portion 3311 and the second clamping engagement portion 3321 move towards each other, they can adhere to the outer wall of the hose 321 to clamp the hose 321. When the first clamping engagement portion 3311 and the second clamping engagement portion 3321 move away from each other, the hose 321 is released. Similarly, Figure 5As shown, the drive unit 34 mainly consists of several parts, including a first pneumatic drive chamber 341, a second pneumatic drive chamber 342, a first return spring 343, and a second return spring 344. The first pneumatic drive chamber 341 and the second pneumatic drive chamber 342 are both formed inside the valve body 31. The first pneumatic drive chamber 341 is correspondingly arranged with the first movable clamping member 331, and the second pneumatic drive chamber 342 is correspondingly arranged with the second movable clamping member 332. The power source for the first pneumatic drive chamber 341 and the second pneumatic drive chamber 342 is high-pressure gas. The first pneumatic drive chamber 341 and the second pneumatic drive chamber 342 are used to drive the corresponding movable clamping members to perform sliding movements. The first return spring 343 is elastically compressed and assembled between the valve body 31 and the first movable clamping member 331, and the second return spring 344 is elastically compressed and assembled between the valve body 31 and the second movable clamping member 332. When high-pressure gas is introduced into the first pneumatic drive chamber 341 and the second pneumatic drive chamber 342, the first movable clamping member 331 overcomes the elastic force of the first return spring 343, and the second movable clamping member 332 overcomes the elastic force of the second return spring 344. The first movable clamping member 331 and the second movable clamping member 332 move towards each other to cut off the hose 321. When the first pneumatic drive chamber 341 and the second pneumatic drive chamber 342 are depressurized, the first return spring 343 drives the first movable clamping member 331 in the opposite direction, and the second return spring 344 drives the second movable clamping member 332 in the opposite direction. The first movable clamping member 331 and the second movable clamping member 332 move away from each other to release the hose 321. In practical applications, the design of the integrated plug-in module 32, which can be disassembled as a whole, means that when the hose 321 needs to be replaced, there is no need to disassemble the core components such as the clamping actuator 33 and the drive unit 34. The operation can be completed simply by removing the integrated plug-in module 32 from the valve body 31 and replacing it with a new integrated plug-in module 32. This not only greatly shortens the maintenance time and ensures that the dispensing module can quickly resume production, but also avoids the assembly errors that may occur during the disassembly and reassembly of the clamping actuator 33, the drive unit 34 and other components.

[0027] Finally, it should be noted that the overall assembly of the integrated plug-in module 32 and the valve body 31, combined with the precise correspondence between the clamping actuator 33 and the hose 321, ensures that the hose 321 maintains a stable position during fluid delivery. Furthermore, the drive unit 34 can drive the clamping actuator 33 to apply uniform opposing pressure to the hose 321, thereby achieving rapid opening and closing of the fluid passage and precise control, which is fully compatible with the requirements of dispensing process for glue delivery accuracy.

[0028] The above description of the disclosed embodiments enables those 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 general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not 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

1. A clamp-type gate valve, characterized in that, The device includes a valve body, a hose, a plug-in body, a clamping actuator, and a drive unit. The hose is inserted into the plug-in body, forming an integrated plug-in module. The integrated plug-in module is installed into or removed from the valve body. The clamping actuator is assembled based on the valve body and is arranged corresponding to the hose. The drive unit is connected to the clamping actuator and is used to drive the clamping actuator to perform clamping or releasing actions to cut off or open the fluid passage in the hose.

2. The clamp-type shut-off valve according to claim 1, characterized in that, The insert body has an insertion through hole and a clamping action avoidance notch; the insertion through hole is used to insert the hose and extends along the length direction of the insert body; the clamping action avoidance notch allows the clamping execution component to extend into it to perform a clamping action on the hose, extends along the thickness direction of the insert body, and communicates with the insertion through hole.

3. The clamp-type shut-off valve according to claim 2, characterized in that, After the flexible tube is inserted into the insertion through hole, it is fixed with glue; multiple glue injection holes are formed on the insertion body; the glue injection holes are linearly and evenly distributed along the extension direction of the insertion through hole, and all of them are connected to the insertion through hole.

4. The clamp-type shut-off valve according to claim 2, characterized in that, The insert body is also formed with an observation hole; the observation hole extends along the width direction of the insert body and communicates with the insertion through hole; the opening position of the observation hole corresponds to the same side or opposite side of the clamping action avoidance notch.

5. The clamp-type shut-off valve according to any one of claims 1-4, characterized in that, The clamping actuation component includes a first movable clamping member and a second movable clamping member; both the first movable clamping member and the second movable clamping member form a sliding pair with the valve body; the free end of the first movable clamping member is formed with a first clamping engagement portion, and the free end of the second movable clamping member is formed with a second clamping engagement portion; the first clamping engagement portion and the second clamping engagement portion cooperate to achieve clamping or releasing of the hose.

6. The clamp-type shut-off valve according to claim 5, characterized in that, The driving unit includes a first pneumatic driving chamber, a second pneumatic driving chamber, a first return spring, and a second return spring. Both the first and second pneumatic driving chambers are formed inside the valve body, with the first pneumatic driving chamber corresponding to the first movable clamping member and the second pneumatic driving chamber corresponding to the second movable clamping member. The first return spring is elastically compressed between the valve body and the first movable clamping member, while the second return spring is elastically compressed between the valve body and the second movable clamping member. When high-pressure gas is introduced into the first and second pneumatic driving chambers, the first movable clamping member overcomes the elastic force of the first return spring, and the second movable clamping member overcomes the elastic force of the second return spring, causing them to move towards each other to cut off the hose. When the first and second pneumatic driving chambers are depressurized, the first and second return springs respectively drive the first and second movable clamping members to move in opposite directions to release the hose.

7. A dispensing module, characterized in that, It includes an adhesive supply unit, a dispensing needle, and a clamp-type shut-off valve as described in any one of claims 1-6; one end of the hose is sealed and connected to the outlet of the adhesive supply unit, and the other end is sealed and connected to the inlet of the dispensing needle; the clamp-type shut-off valve is used to control the opening and closing of the adhesive delivery passage between the adhesive supply unit and the dispensing needle.

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