Dual-function clamping tool and PCB foam attaching device and method

Abstract

The invention provides a dual-function clamping tool and a PCB foam attaching device and method. The dual-function clamping tool comprises a mounting frame, a clamping mechanism and a clamping mechanism, the film tearing mechanism comprises a first lifting adjusting assembly and a pressing assembly, the first lifting adjusting assembly comprises a first sliding plate, the pressing assembly comprises a movable claw and a fixed claw, and the movable claw can move relative to the fixed claw; the foam clamping mechanism comprises a second lifting adjusting assembly and an opening and closing clamping assembly, the second lifting adjusting assembly comprises a second sliding plate, the opening and closing clamping assembly comprises two foam clamping jaws, and the foam clamping jaws are provided with anti-sticking patterns and anti-sticking thorns. According to the positioning device, all the structures can be highly matched, the positioning rhythm is shortened, the operation precision is improved, and the occupied space of a production line is reduced. Due to the special structural design of the foam clamping jaw, the foam clamping jaw can be prevented from being adhered to the foam, and then the foam attaching precision and stability degree are improved. Compared with a conventional PCB processing technology, the method has the advantages of high precision, high efficiency, high stability, high compatibility and the like.

Description

Technical Field

[0001] This invention relates to the field of PCB board processing technology, specifically to a dual-function clamping fixture, a PCB foam attaching device and method. Background Technology

[0002] In the field of PCB (Printed Circuit Board) manufacturing, to achieve functions such as component insulation protection and shock absorption, a combined process of "adhesive application - backing film removal - foam bonding" is typically required on the PCB surface. The specific process involves first applying adhesive with a backing film to a designated area of ​​the PCB, then removing the backing film to expose the adhesive surface, and finally precisely bonding foam to this adhesive surface. However, the current technology lacks dedicated equipment for this combined process, leading to a series of technical challenges that urgently need to be addressed.

[0003] Currently, the processes of peeling off the film and attaching foam rely on multiple independent machines. When transferring PCB boards between different machines, repeated visual positioning and mechanical calibration are required, which severely restricts production efficiency. At the same time, the positioning process is susceptible to errors, resulting in a high rate of foam attachment position offset. This necessitates additional quality inspection and rework processes, further increasing time and production costs.

[0004] Furthermore, due to the inherent adhesiveness of foam, the edges of existing mobile devices (such as vacuum nozzles and mechanical grippers) are prone to sticking to the device surface during pick-and-place operations. This adhesion not only contaminates the mobile device but also causes the foam to deform or shift during transfer, resulting in the attachment position exceeding the PCB board's attachment tolerances and severely impacting product quality.

[0005] In summary, existing technologies, due to the lack of integrated specialized equipment and the failure to effectively solve the problem of foam transfer and adhesion, are unable to meet the demands of modern PCB board production in terms of production efficiency, product quality, space utilization, and cost control. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the efficiency and accuracy of PCB foam bonding in the prior art need to be improved, and to provide a dual-function clamping fixture, a PCB foam bonding device and method.

[0007] To solve the above-mentioned technical problems, the present invention provides a dual-function clamping fixture that, after removing the back film of the PCB board adhesive, attaches foam to the adhesive. It includes: a mounting frame connected to an external mobile device; and a film-removing mechanism connected to the mounting frame, comprising a first lifting adjustment assembly and at least one pressing assembly. The first lifting adjustment assembly includes a first sliding plate that can move vertically. The pressing assembly includes a moving claw and a fixed claw, wherein the fixed claw is fixedly connected to the first sliding plate, and the moving claw is slidably connected to the first sliding plate. The moving claw can move towards / The device moves away from the fixed claw to clamp / release the backing film; at least one foam clamping mechanism is connected to the mounting frame. One of the foam clamping mechanisms includes a second lifting adjustment component and an opening and closing clamping component. The second lifting adjustment component includes a second sliding plate that can move vertically. The opening and closing clamping component includes two foam clamps that can open and close relative to each other. There is a clamping space between the two foam clamps. The foam clamps are provided with anti-adhesion patterns and at least one anti-adhesion spike on the side facing the clamping space. The anti-adhesion patterns contact the side wall of the foam to be attached, and the anti-adhesion spikes can penetrate into the foam to be attached.

[0008] In one embodiment of the present invention, the film-tearing mechanism includes a first fixed plate connected to the mounting frame, the first lifting adjustment assembly further includes a first driver and a first guide rail, the first driver is disposed on the first fixed plate, the first guide rail is connected to the first driver and extends in a vertical direction, and the first sliding plate is connected to the working end of the first driver to move along the first guide rail.

[0009] In one embodiment of the present invention, the pressing assembly further includes a second driver and a second guide rail, both of which are disposed on the first slide plate. The second guide rail extends in a vertical direction, and the movable claw is connected to the working end of the second driver and slidably connected to the second guide rail.

[0010] In one embodiment of the present invention, both the movable claw and the fixed claw are provided with anti-slip plug-in blocks, and the anti-slip plug-in blocks on the movable claw and the fixed claw can be plugged into each other.

[0011] In one embodiment of the present invention, the foam clamping mechanism further includes a second fixing plate connected to the mounting frame, and the second lifting adjustment assembly further includes a third driver and a third guide rail. The third driver is disposed on the second fixing plate, and the third guide rail is connected to the third driver and extends in a vertical direction. The second sliding plate is connected to the working end of the third driver to move along the third guide rail.

[0012] In one embodiment of the present invention, the opening and closing clamping assembly further includes an opening and closing driver, the opening and closing driver being connected to the second sliding plate, and the foam gripper being connected to the working end of the opening and closing driver.

[0013] In one embodiment of the present invention, the foam gripper includes a connecting portion and a clamping portion. One end of the connecting portion is connected to the opening and closing driver, and the other end is connected to the clamping portion. The anti-stick pattern and the anti-stick barbs are both disposed on the clamping portion.

[0014] In one embodiment of the present invention, the mounting bracket includes a connecting plate and a docking member. One side of the connecting plate is connected to the film-tearing mechanism and the foam clamping mechanism, and the other side is connected to the docking member. The docking member is detachably connected to an external mobile device.

[0015] The present invention also provides a PCB foam attaching device, which includes the above-mentioned dual-function clamping fixture, mobile device, control system and waste recycling box. The dual-function clamping fixture is connected to the mobile device. The mobile device, the film tearing mechanism in the dual-function clamping fixture and the foam clamping mechanism in the dual-function clamping fixture are all connected to the control system. The waste recycling box is disposed on one side of the film tearing mechanism.

[0016] This invention also provides a PCB foam attachment method, which uses the aforementioned dual-function clamping fixture to perform PCB foam attachment processing, comprising: Step S1, clamping foam using the foam clamping mechanism in the dual-function clamping fixture, wherein the anti-adhesion piercing on the foam clamping claw is provided to the foam to be attached, and the anti-adhesion pattern on the foam clamping claw contacts the side wall of the foam to be attached; Step S2, moving the dual-function clamping fixture with foam to the PCB station to be processed, and adjusting the film peeling mechanism above the PCB board to be processed, and peeling off the adhesive back film of the PCB board to be processed using the film peeling mechanism in the dual-function clamping fixture; Step S3, moving the foam clamping mechanism with foam to the PCB board to be processed, and attaching the foam to the adhesive after peeling off the film, thus completing the PCB foam attachment process.

[0017] The technical solution of the present invention has the following advantages over the prior art:

[0018] The dual-function clamping fixture, PCB foam attaching device, and method described in this invention remove the back film of the PCB board adhesive using a film-peeling mechanism, and then attach the foam to the adhesive after film removal using a foam clamping mechanism, thus achieving a dual-action process. In this process, the various structures can cooperate closely, reducing positioning cycle time, improving operational accuracy, and minimizing the space occupied on the production line. In particular, the foam clamping mechanism in this application, through its special structural design of the foam grippers, avoids adhesion to the foam, thereby improving the accuracy and stability of foam attachment. Compared to current conventional PCB board processing technologies, this application offers advantages such as high precision, high efficiency, high stability, and high compatibility. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the dual-function clamping tool in a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram of the film-tearing mechanism in the dual-function clamping fixture shown.

[0022] Figure 3 yes Figure 1 A three-dimensional structural diagram of the pressing component in the dual-function clamping fixture shown.

[0023] Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 yes Figure 1 A three-dimensional structural diagram of the foam clamping mechanism in the dual-function clamping fixture shown.

[0025] Figure 6 yes Figure 5 Enlarged structural diagram at point B in the middle.

[0026] Explanation of reference numerals in the accompanying drawings: 100, mounting bracket; 110, connecting plate; 120, mating part; 200, film tearing mechanism; 210, first fixing plate; 220, first lifting adjustment assembly; 221, first driver; 222, first guide rail; 223, first sliding plate; 230, pressing assembly; 231, second driver; 232, second guide rail; 233, moving claw; 234, fixing claw; 235, anti-slip plug-in block; 300, foam clamping mechanism; 310, second fixing plate; 320, second lifting adjustment assembly; 321, third driver; 322, second sliding plate; 330, opening and closing clamping assembly; 331, opening and closing driver; 332, foam clamp; 3321, connecting part; 3322, clamping part; 3323, anti-stick burr; 3324, anti-stick pattern. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0028] Example 1:

[0029] See Figure 1 As shown, this embodiment provides a dual-function clamping fixture that can attach foam onto the adhesive after removing the backing film from the PCB board. It includes: a mounting frame 100 connected to an external mobile device; and a film-removing mechanism 200 connected to the mounting frame 100, which includes a first lifting adjustment component 220 and at least one pressing component 230. The first lifting adjustment component 220 includes a first sliding plate 223 that can move vertically. The pressing component 230 includes a movable claw 233 and a fixed claw 234. The fixed claw 234 is fixedly connected to the first sliding plate 223, and the movable claw 233 is slidably connected to the first sliding plate 223. The movable claw 233 can move towards / away from the first sliding plate 223. The fixed claw 234 moves to clamp / release the backing film; at least one foam clamping mechanism 300 is connected to the mounting frame 100. One of the foam clamping mechanisms 300 includes a second lifting adjustment component 320 and an opening and closing clamping component 330. The second lifting adjustment component 320 includes a second sliding plate 322 that can move vertically. The opening and closing clamping component 330 includes two foam clamping claws 332 that can open and close relative to each other. There is a clamping space between the two foam clamping claws 332. The foam clamping claws 332 are provided with an anti-adhesion pattern 3324 and at least one anti-adhesion spike 3323 on the side facing the clamping space. The anti-adhesion pattern 3324 contacts the side wall of the foam to be attached, and the anti-adhesion spike 3323 can penetrate into the foam to be attached.

[0030] The dual-function clamping fixture described in this embodiment removes the back film of the PCB board adhesive using a film-peeling mechanism 200, and then attaches foam to the adhesive after film removal using a foam clamping mechanism 300, thus achieving a dual-action process. During this process, the various structures work in close coordination, reducing positioning cycle time, improving operational accuracy, and minimizing space requirements on the production line. In particular, the foam clamping mechanism 300 in this application, through the special structural design of its foam grippers 332, avoids adhesion between the grippers and the foam, thereby improving the accuracy and stability of foam attachment. Compared to current conventional PCB board processing technologies, this application offers advantages such as high precision, high efficiency, high stability, and high compatibility.

[0031] In this embodiment, the mounting frame 100 serves as the main frame of the tooling and is rigidly connected to external robotic arms, linear modules, and other mobile devices, thereby ensuring the motion accuracy of the entire clamping tooling in three-dimensional space. Specifically, the mounting frame 100 in this embodiment includes a connecting plate 110 and a docking member 120. One side of the connecting plate 110 is connected to the film tearing mechanism 200 and the foam clamping mechanism 300, and the other side is connected to the docking member 120. The docking member 120 is detachably connected to the external mobile device.

[0032] See Figure 2 and Figure 3 As shown, in this embodiment, the film-peeling mechanism 200 is used to peel off the backing film of the adhesive on the PCB board to be processed. It includes a first fixing plate 210, which is detachably connected to the mounting bracket 100. A first lifting adjustment component 220 on the first fixing plate 210 is used to dynamically position the pressing component 230 in the vertical direction, thereby adapting to PCB boards of different thicknesses. Specifically, the first lifting adjustment component 220 also includes a first driver 221 and a first guide rail 222. The first driver 221 is disposed on the first fixing plate 210, and the first guide rail 222 is connected to the first driver 221 and extends in the vertical direction. A first sliding plate 223 is connected to the working end of the first driver 221 to move along the first guide rail 222. Specifically, the first driver 221 is preferably a linear drive motor, which provides power for the lifting and lowering of the first sliding plate 223.

[0033] Furthermore, the pressing assembly 230 also includes a second driver 231 and a second guide rail 232, both of which are disposed on the first slide plate 223. The second guide rail 232 extends vertically, and the movable claw 233 is connected to the working end of the second driver 231 and slidably connected to the second guide rail 232. Based on this structural design, the fixed claw 234 and the movable claw 233 can work together to clamp the back film. Specifically, see... Figure 4As shown, based on the smooth surface of the back film, in order to achieve stable clamping of the back film and ensure the film tearing effect, both the moving claw 233 and the fixed claw 234 in this embodiment are provided with anti-slip plug-in blocks 235, and the anti-slip plug-in blocks 235 on the moving claw 233 and the fixed claw 234 can be plugged into each other.

[0034] See Figure 1 , Figure 5 as well as Figure 6 As shown, this embodiment includes two foam clamping mechanisms 300. Here, we will describe the specific structure of one of them as an example: The foam clamping mechanism 300 is used for anti-stick picking and precise attachment of the foam. The second lifting adjustment component 320 enables height adjustment of the foam. The foam grippers 332 have serrated anti-stick patterns 3324 machined on their sides facing the clamping space. When in contact with the foam sidewall, the microstructure reduces the contact area, lowers intermolecular forces, and prevents the foam adhesive layer from sticking to the grippers. Anti-stick thorns 3323 penetrate the foam surface and mechanically engage to fix the foam, preventing it from falling off due to vibration during transfer. This is especially suitable for thicker foams, significantly improving stability during transport. Specifically, in this embodiment, each foam gripper 332 is provided with two anti-sticking spikes 3323, and both anti-sticking spikes 3323 are provided on the anti-sticking pattern 3324. In different embodiments, the number of anti-sticking spikes 3323 can be set according to actual usage requirements, and the actual position of the anti-sticking spikes 3323 connected to the foam gripper 332 can be adjusted according to the foam to be transferred. The present invention does not impose specific limitations on this.

[0035] In this embodiment, the foam clamping mechanism 300 further includes a second fixing plate 310 connected to the mounting frame 100. The second lifting adjustment assembly 320 further includes a third driver 321 and a third guide rail. The third driver 321 is disposed on the second fixing plate 310, and the third guide rail is connected to the third driver 321 and extends vertically. The second sliding plate 322 is connected to the working end of the third driver 321 to move along the third guide rail. Based on this, through the precise control of the third driver 321, the vertical position adjustment of the opening and closing clamping assembly 330 can be achieved to adapt to foam of different heights or operational needs. The linear guidance of the third guide rail and the precise control of the third driver 321 minimize the positional error of the opening and closing clamping assembly 330. Through the above structural design, the foam clamping mechanism 300 can efficiently and stably complete the handling and assembly tasks of foam, improving production efficiency and product quality.

[0036] The opening and closing clamping assembly 330 in this embodiment further includes an opening and closing driver 331, which is connected to the second sliding plate 322. The foam gripper 332 is connected to the working end of the opening and closing driver 331. Specifically, the foam gripper 332 includes a connecting part 3321 and a clamping part 3322. One end of the connecting part 3321 is connected to the opening and closing driver 331, and the other end is connected to the clamping part 3322 to achieve clamping / releasing of the foam. In this embodiment, the opening and closing driver 331 is preferably a cylinder. In different embodiments, the opening and closing driver 331 can also be configured as a dual-head motor or other drive structure. This invention does not impose specific limitations on this.

[0037] Example 2:

[0038] This embodiment provides a PCB foam bonding device, which includes the aforementioned dual-function clamping fixture, a mobile device, a control system, and a waste recycling box. The dual-function clamping fixture is connected to the mobile device. The mobile device, the film-tearing mechanism 200 in the dual-function clamping fixture, and the foam clamping mechanism 300 in the dual-function clamping fixture are all connected to the control system. The waste recycling box is disposed on one side of the film-tearing mechanism 200. In actual production and processing, operators can adjust the above structure in real time through the control system, thereby improving the flexibility of the device. Parameters can also be preset through the control system, thereby improving the automation level of the device.

[0039] Example 3:

[0040] This embodiment provides a PCB foam attachment method, which uses the dual-function clamping fixture described in Embodiment 1 to perform the PCB foam attachment process, including:

[0041] Step S1: The foam is clamped by the foam clamping mechanism 300 in the dual-function clamping fixture, wherein the anti-adhesion barbs 3323 on the foam clamping claw 332 penetrate the foam to be attached, and the anti-adhesion pattern 3324 on the foam clamping claw 332 contacts the side wall of the foam to be attached.

[0042] Step S2: Move the dual-function clamping fixture with foam to the PCB station to be processed, and adjust the film peeling mechanism 200 above the PCB to be processed, and peel off the adhesive back film of the PCB to be processed through the film peeling mechanism 200 in the dual-function clamping fixture.

[0043] Step S3: Move the foam clamping mechanism 300 with foam to above the PCB board to be processed, and attach the foam to the adhesive after the film has been peeled off, completing the PCB foam attachment process. In summary, the dual-function clamping fixture and PCB foam attachment method of this invention removes the back film of the PCB board adhesive through the film peeling mechanism 200, and then attaches the foam to the adhesive after the film has been peeled off through the foam clamping mechanism 300, thus achieving a dual-action process. During the above process, the various structures can cooperate highly, reducing the positioning cycle time, improving operational accuracy, and reducing the space occupied on the production line. In particular, the foam clamping mechanism 300 in this application, through the special structural design of its foam grippers 332, can avoid mutual adhesion with the foam, thereby improving the accuracy and stability of foam attachment. Compared with current conventional PCB board processing technologies, this application has advantages such as high precision, high efficiency, high stability, and high compatibility.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A dual-function clamping fixture, characterized in that: After removing the backing film of the PCB board adhesive, foam is attached to the adhesive, including: Mounting bracket, which is connected to an external mobile device; A film-tearing mechanism is connected to the mounting frame and includes a first lifting adjustment component and at least one pressing component. The first lifting adjustment component includes a first sliding plate that can be moved vertically. The pressing component includes a movable claw and a fixed claw. The fixed claw is fixed to the first sliding plate, and the movable claw is slidably connected to the first sliding plate. The movable claw can move toward / away from the fixed claw to clamp / release the back film. At least one foam clamping mechanism is provided, the foam clamping mechanism being connected to the mounting frame. One of the foam clamping mechanisms includes a second lifting adjustment component and an opening and closing clamping component. The second lifting adjustment component includes a second sliding plate that can be lifted and moved vertically. The opening and closing clamping component includes two foam clamps that can be opened and closed relative to each other. There is a clamping space between the two foam clamps. The foam clamps are provided with an anti-adhesion pattern and at least one anti-adhesion spike on the side facing the clamping space. The anti-adhesion pattern contacts the side wall of the foam to be attached, and the anti-adhesion spike can penetrate into the foam to be attached.

2. The dual-function clamping fixture according to claim 1, characterized in that: The film-tearing mechanism includes a first fixed plate connected to the mounting frame. The first lifting and adjusting assembly also includes a first driver and a first guide rail. The first driver is disposed on the first fixed plate, the first guide rail is connected to the first driver and extends in a vertical direction, and the first sliding plate is connected to the working end of the first driver to move along the first guide rail.

3. The dual-function clamping fixture according to claim 1, characterized in that: The pressing assembly further includes a second driver and a second guide rail, both of which are disposed on the first slide plate. The second guide rail extends vertically, and the moving claw is connected to the working end of the second driver and slidably connected to the second guide rail.

4. The dual-function clamping fixture according to claim 1, characterized in that: Both the movable claw and the fixed claw are provided with anti-slip plug-in blocks, and the anti-slip plug-in blocks on the movable claw and the fixed claw can be plugged into each other.

5. The dual-function clamping fixture according to claim 1, characterized in that: The foam clamping mechanism further includes a second fixing plate connected to the mounting frame. The second lifting adjustment assembly further includes a third driver and a third guide rail. The third driver is disposed on the second fixing plate, and the third guide rail is connected to the third driver and extends in a vertical direction. The second sliding plate is connected to the working end of the third driver to move along the third guide rail.

6. The dual-function clamping fixture according to claim 1, characterized in that: The opening and closing clamping assembly further includes an opening and closing driver, which is connected to the second sliding plate, and the foam gripper is connected to the working end of the opening and closing driver.

7. The dual-function clamping fixture according to claim 6, characterized in that: The foam gripper includes a connecting part and a clamping part. One end of the connecting part is connected to the opening and closing driver, and the other end is connected to the clamping part. The anti-stick pattern and the anti-stick barbs are both provided on the clamping part.

8. The dual-function clamping fixture according to claim 1, characterized in that: The mounting bracket includes a connecting plate and a docking component. One side of the connecting plate is connected to the film-tearing mechanism and the foam clamping mechanism, and the other side is connected to the docking component. The docking component is detachably connected to an external mobile device.

9. A PCB foam attaching device, characterized in that: The device includes the dual-function clamping fixture, mobile device, control system, and waste recycling box as described in any one of claims 1 to 8. The dual-function clamping fixture is connected to the mobile device. The mobile device, the film-tearing mechanism in the dual-function clamping fixture, and the foam clamping mechanism in the dual-function clamping fixture are all connected to the control system. The waste recycling box is disposed on one side of the film-tearing mechanism.

10. A method for attaching PCB foam, characterized in that: The PCB foam bonding process is performed using the dual-function clamping fixture described in any one of claims 1 to 8, comprising: Step S1: The foam is clamped by the foam clamping mechanism in the dual-function clamping fixture, wherein the anti-adhesion piercing on the foam claw is set to the foam to be attached, and the anti-adhesion pattern on the foam claw contacts the side wall of the foam to be attached. Step S2: Move the dual-function clamping fixture with foam to the PCB station to be processed, and adjust the film peeling mechanism above the PCB to be processed. Peel off the adhesive back film of the PCB to be processed through the film peeling mechanism in the dual-function clamping fixture. Step S3: Move the foam clamping mechanism with foam to the top of the PCB board to be processed, and attach the foam to the adhesive after peeling off the film to complete the PCB foam attachment process.

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