Cover film attaching device for flexible circuit board production

Abstract

The utility model discloses a cover film attaching device for flexible circuit board production, which comprises a base, a groove is formed in the base, a sliding seat is arranged in the groove in a sliding mode, the sliding seat is arranged in the groove in a sliding mode through two sliding plates, sliding grooves corresponding to the sliding plates are formed in the side walls of the two sides of the groove, and the sliding plates are arranged in the sliding grooves. A sliding seat is arranged on the base, two sliding blocks are symmetrically arranged on the sliding seat in a sliding mode, circuit board fixing mechanisms are arranged on the two sliding blocks, sliding grooves corresponding to the two sliding blocks are formed in the sliding seat, control mechanisms corresponding to the two sliding blocks are arranged in the sliding grooves, and a supporting plate is fixedly arranged on one side of the base. The end, away from the base, of the supporting plate is fixedly connected with a top plate, and a hydraulic table is fixedly arranged on the lower wall of the top plate. The covering film can be tightly attached to the flexible circuit board in an air exhaust mode, traditional pressing adhesion and heating adhesion are replaced, the problem that the flexible circuit board is damaged can be effectively solved, and the yield is increased.

Description

Technical Field

[0001] This invention relates to the field of flexible circuit board manufacturing technology, and in particular to a cover film application device for flexible circuit board manufacturing. Background Technology

[0002] With the miniaturization and increasing complexity of electronic devices, flexible printed circuit boards (FPCBs) are being used more and more widely in the electronics manufacturing industry. As market demand for FPCBs grows, the requirements for their performance and quality are also becoming more stringent. FPCBs are advantageous due to their lightweight and compact size, but they have relatively low mechanical strength and are prone to cracking. They may break or scratch during use. Therefore, it is necessary to enhance their mechanical strength by bonding reinforcing materials to facilitate the installation and insertion of surface-mount components and improve their durability. This includes the process of bonding a cover film to the flexible printed circuit board.

[0003] However, existing methods for bonding cover films to flexible circuit boards typically involve manual pressing, which can easily create air bubbles within the cover film, affecting its adhesion. Alternatively, heating the cover film to soften it before applying it to the flexible circuit board can damage the board and significantly reduce yield. To address these issues, I propose a cover film bonding device for flexible circuit board production. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the traditional method of pressing and heat sealing when applying cover film to flexible circuit boards, which can easily damage the flexible circuit boards and affect the product yield. Therefore, this invention proposes a cover film application device for flexible circuit board production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cover film attaching device for flexible circuit board production includes a base with a groove. A slide block is slidably disposed within the groove, and the slide block is slidably disposed within the groove via two sliding plates. Sliding grooves corresponding to the sliding plates are formed on both side walls of the groove. Two sliders are symmetrically slidably disposed on the slide block, and circuit board fixing mechanisms are provided on the two sliders. Sliding grooves corresponding to the two sliders are formed on the slide block, and control mechanisms corresponding to the two sliders are provided within the sliding grooves. A support plate is fixedly disposed on one side of the base, and a top plate is fixedly connected to the end of the support plate away from the base. A hydraulic platform is fixedly disposed on the lower wall of the top plate, and a cover is slidably fixedly connected to the output end of the hydraulic platform. The cover is connected to the hydraulic platform via a connecting mechanism. A side plate is fixedly installed on one side wall of the cover. A winding roller is rotatably installed on the side wall of the side plate. A covering film is wound on the winding roller. A clamping plate is also connected to the side wall of the cover away from the winding roller. A locking bolt is rotatably installed through the clamping plate. A threaded hole corresponding to the locking bolt is opened on the side wall of the cover. The clamping plate and the covering film are correspondingly arranged. An air extractor is also fixedly installed on the lower wall of the slide. An air extraction pipe is fixedly connected to the suction end of the air extractor. The air extraction pipe extends through the slide and into the sliding groove, and the air extraction pipe is located in the middle of the sliding groove. A pull handle is also fixedly connected to one side wall of the slide.

[0007] Preferably, the circuit board fixing mechanism includes two pressure plates, each of which is connected to two sliders via telescopic rods. Each slider is rotatably provided with a second threaded rod, which rotatably passes through the two pressure plates. Each pressure plate has a threaded through hole corresponding to the second threaded rod. The ends of the two second threaded rods away from the sliders are also fixedly connected to a second rotating handle. The lower wall of the cover has a recess corresponding to the pressure plate.

[0008] Preferably, the control mechanism includes a first threaded rod, which is rotatably disposed in a sliding groove and rotatably passes through two sliders. Each of the two sliders has a through hole corresponding to the first threaded rod. The two ends of the first threaded rod are arranged in opposite directions, and one end of the first threaded rod is rotatably connected to a first rotating handle that passes through the side wall of the slide block.

[0009] Preferably, the connecting mechanism includes two locking blocks. The upper wall of the cover shell has a connecting groove corresponding to the output end of the hydraulic platform. Two telescopic grooves are symmetrically opened on the side wall of the connecting groove. The two locking blocks are slidably disposed in the two telescopic grooves respectively, and both locking blocks are connected to the inner wall of the telescopic grooves by springs. Two locking slots corresponding to the locking blocks are symmetrically opened on the side wall of the output end of the hydraulic platform. The side wall of the two locking blocks near the opening of the connecting groove is inclined. Each of the two locking blocks is provided with a corresponding pulling mechanism.

[0010] Preferably, the pulling mechanism includes two pull rods, both of which are L-shaped and fixedly mounted on the side walls of the two locking blocks. Both pull rods slide through the upper wall of the cover, and the upper wall of the cover has two symmetrically arranged strip-shaped openings corresponding to the pull rods. The two pull rods extend out of the hydraulic platform.

[0011] Preferably, a sealing soft rubber gasket is fixedly provided on the lower wall of the cover and in the recess.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: By cooperating with the first threaded rod and the slider, the slider spacing is controlled, thereby adjusting the slider spacing according to the length of the flexible circuit board. Then, by rotating the second threaded rod, the two pressure plates clamp the two ends of the flexible circuit board, completing the fixation of the flexible circuit board on the slide. By setting a pull rod, the card block can be pulled out of the slot, allowing for quick disassembly and replacement of the cover. This allows the cover to adapt to flexible circuit boards of different sizes and pressure plates in different positions. By cooperating with the coiling roller and the clamping plate, the cover film on the coiling roller is pulled out, passes through the lower side of the cover, and is clamped inside the clamping plate. The hydraulic table is controlled to drive the cover to press down, covering the flexible circuit board with the cover film. The air pump is turned on to extract air from the lower side of the cover film. As the air pressure on the lower side of the cover film decreases, the cover film can adhere tightly to the flexible circuit board, without generating air bubbles or damaging the flexible circuit board, greatly improving the product yield. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a cover film attaching device for flexible circuit board production proposed in this invention.

[0014] Figure 2 This is a three-dimensional structural diagram of a cover film attaching device for flexible circuit board production proposed in this invention from another angle.

[0015] Figure 3 This is a top view schematic diagram of a cover film attaching device for flexible circuit board production proposed in this invention;

[0016] Figure 4This is a side view of a cover film attaching device for flexible circuit board production proposed in this invention.

[0017] Figure 5 for Figure 4 A schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Base, 2. Groove, 3. Slide, 4. Slide plate, 5. Slide groove, 6. Evacuator, 7. Evacuation pipe, 8. Slider, 9. Slide groove, 10. First threaded rod, 11. First handle, 12. Pressure plate, 13. Telescopic rod, 14. Second threaded rod, 15. Second handle, 16. Support plate, 17. Top plate, 18. Hydraulic platform, 19. Cover shell, 20. Side plate, 21. Coil roller, 22. Clamping plate, 23. Locking bolt, 24. Pull rod, 25. Pull handle, 26. Connecting groove, 27. Telescopic groove, 28. Locking block, 29. Spring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-5A cover film attaching device for flexible circuit board production includes a base 1 with a groove 2. A slide block 3 is slidably disposed within the groove 2, and the slide block 3 is slidably disposed within the groove 2 via two sliding plates 4. Slide grooves 5 corresponding to the sliding plates 4 are provided on both side walls of the groove 2. Two sliders 8 are symmetrically slidably disposed on the slide block 3. A circuit board fixing mechanism is provided on the two sliders 8, comprising two pressure plates 12. Each pressure plate 12 is connected to one of the two sliders 8 via a telescopic rod 13. A second threaded rod 14 is rotatably disposed on each of the two sliders 8, and the two second threaded rods 14 rotatably pass through the two pressure plates 12. Each pressure plate 12 has a threaded through hole corresponding to the second threaded rod 14. A second rotating handle 15 is fixedly connected to the end away from the slider 8. A notch corresponding to the pressure plate 12 is opened on the lower wall of the cover 19. A sliding groove 9 corresponding to the two sliders 8 is opened on the slide base 3. A control mechanism corresponding to the two sliders 8 is provided in the sliding groove 9. The control mechanism includes a first threaded rod 10. The first threaded rod 10 is rotatably disposed in the sliding groove 9 and is rotatably disposed through the two sliders 8. A paper through hole corresponding to the first threaded rod 10 is opened on both sliders 8. The two ends of the first threaded rod 10 are arranged in opposite directions. A first rotating handle 11 is fixedly connected to the side wall of the slide base 3. A support plate 16 is fixedly disposed on one side of the base 1. The end of the support plate 16 away from the base 1 is fixedly connected to the first rotating handle 11. A top plate 17 is provided, and a hydraulic platform 18 is fixedly installed on the lower wall of the top plate 17. A cover 19 is slidably fixedly connected to the output end of the hydraulic platform 18. The cover 19 is connected to the hydraulic platform 18 through a connecting mechanism, which includes two locking blocks 28. The upper wall of the cover 19 has a connecting groove 26 corresponding to the output end of the hydraulic platform 18. Two telescopic grooves 27 are symmetrically opened on the side wall of the connecting groove 26. The two locking blocks 28 are slidably installed in the two telescopic grooves 27, and both locking blocks 28 are connected to the inner wall of the telescopic groove 27 through springs 29. Two locking slots corresponding to the locking blocks 28 are symmetrically opened on the side wall of the output end of the hydraulic platform 18. The side wall of the two locking blocks 28 near the opening of the connecting groove 26 is inclined. Each of the two locking blocks 28 has a corresponding locking slot. The corresponding pulling mechanism includes two pull rods 24, both L-shaped, and fixedly mounted on the side walls of two locking blocks 28. Both pull rods 24 slide through the upper wall of the cover 19. The upper wall of the cover 19 has two symmetrically arranged strip-shaped openings corresponding to the pull rods 24. The two pull rods 24 extend out to hydraulic platforms 18. A side plate 20 is fixedly mounted on one side wall of the cover 19, and a coiling roller 21 is rotatably mounted on the side wall of the side plate 20. A covering film is coiled on the coiling roller 21. A clamping plate 22 is also connected to the side wall of the cover 19 away from the coiling roller 21. A locking bolt 23 is rotatably mounted through the clamping plate 22. A threaded hole corresponding to the locking bolt 23 is provided on the side wall of the cover 19.The clamping plate 22 is correspondingly set with the covering film. An air extractor 6 is also fixedly installed on the lower wall of the slide block 3. An air extraction pipe 7 is fixedly connected to the suction end of the air extractor 6. The air extraction pipe 7 extends through the slide block 3 into the sliding groove 9, and is located in the middle of the sliding groove 9. A pull handle 25 is also fixedly connected to one side wall of the slide block 3. A sealing soft rubber gasket is fixedly installed on the lower wall and in the recess of the cover shell 19. Through the cooperation of the first threaded rod 10 and the slider 8, the spacing of the slider 8 is controlled, allowing adjustment of the slider 8 spacing according to the length of the flexible circuit board. Then, by rotating the second threaded rod 14, the two pressure plates 12 clamp the two ends of the flexible circuit board, completing the fixation of the flexible circuit board on the slide block 3. The pull rod 24 allows the locking block 28 to be pulled out of the slot, enabling quick removal and replacement of the cover 19. This allows the cover 19 to accommodate flexible circuit boards of different sizes and pressure plates 12 in different positions. Through the cooperation of the coiling roller 21 and the clamping plate 22, the covering film on the coiling roller 21 is pulled out, passes through the underside of the cover 19, and is clamped inside the clamping plate 22. The hydraulic table 18 then presses the cover 19 down, covering the flexible circuit board with the covering film. The vacuum pump 6 is then activated to extract air from under the covering film. As the air pressure under the covering film decreases, the covering film adheres tightly to the flexible circuit board, preventing air bubbles and damage, thus significantly improving the product yield.

[0021] In this invention, during the adhesion of the cover film to the flexible circuit board, the spacing of the sliders 8 is controlled by the cooperation of the first threaded rod 10 and the slider 8. This allows the spacing of the sliders 8 to be adjusted according to the length of the flexible circuit board. Then, by rotating the second threaded rod 14, the two pressure plates 12 clamp the two ends of the flexible circuit board, thus fixing the flexible circuit board on the slide block 3. The pull rod 24 is used to pull the locking block 28, which can be pulled out of the slot, allowing the cover 19 to be quickly removed and replaced, making the cover 19 adaptable to different applications. Flexible circuit boards of different sizes and pressure plates 12 at different positions are used. Through the cooperation of the coiling roller 21 and the clamping plate 22, the cover film on the coiling roller 21 is pulled out and passed through the lower side of the cover shell 19 and clamped inside the clamping plate 22. The hydraulic table 18 is controlled to drive the cover shell 19 to press down, covering the flexible circuit board with the cover film. The air pump 6 is turned on to extract air from the lower side of the cover film. As the air pressure on the lower side of the cover film decreases, the cover film can stick tightly to the flexible circuit board, without generating air bubbles or damaging the flexible circuit board, which greatly improves the product yield.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cover film attaching device for flexible circuit board production, comprising a base (1), characterized in that, The base (1) is provided with a groove (2), the sliding seat (3) is slidably arranged in the groove (2), the sliding seat (3) is slidably arranged in the groove (2) through two sliding plates (4), the two side walls of the groove (2) are provided with sliding grooves (5) corresponding to the sliding plates (4), the sliding seat (3) is provided with two sliding blocks (8) symmetrically, the two sliding blocks (8) are provided with a circuit board fixing mechanism, the sliding seat (3) is provided with a sliding groove (9) corresponding to the two sliding blocks (8), the sliding groove (9) is provided with a control mechanism corresponding to the two sliding blocks (8), one side of the base (1) is fixedly provided with a supporting plate (16), one end of the supporting plate (16) away from the base (1) is fixedly connected with a top plate (17), the lower wall of the top plate (17) is fixedly provided with a hydraulic table (18), the output end of the hydraulic table (18) is slidably fixedly connected with a cover shell (19), the cover shell (19) is connected with the hydraulic table (18) through a connecting mechanism, one side wall of the cover shell (19) is fixedly provided with a side plate (20), the side wall of the side plate (20) is rotatably provided with a coiling roller (21), the coiling roller (21) is coiled with a covering film, one side wall of the cover shell (19) away from the coiling roller (21) is further connected with a clamping plate (22), the clamping plate (22) is rotatably penetrated with a locking bolt (23), the side wall of the cover shell (19) is provided with a threaded hole corresponding to the locking bolt (23), the clamping plate (22) is provided corresponding to the covering film, the lower wall of the sliding seat (3) is further fixedly provided with an air extractor (6), the air suction end of the air extractor (6) is fixedly connected with an air suction pipe (7), the air suction pipe (7) extends into the sliding groove (9) through the sliding seat (3), and the air suction pipe (7) is arranged in the middle of the sliding groove (9), one end of the side wall of the sliding seat (3) is further fixedly connected with a pull handle (25).

2. The coverlay film attaching apparatus for flexible circuit board production according to claim 1, wherein The circuit board fixing mechanism comprises two pressing plates (12), the two pressing plates (12) are connected with the two sliding blocks (8) through telescopic rods (13), the two sliding blocks (8) are rotatably provided with second threaded rods (14), the two second threaded rods (14) are rotatably penetrated through the two pressing plates (12), the two pressing plates (12) are provided with threaded holes corresponding to the second threaded rods (14), the second threaded rods (14) are further fixedly connected with second handles (15) away from the sliding blocks (8), and the lower wall of the cover shell (19) is provided with notches corresponding to the pressing plates (12).

3. The coverlay film attaching apparatus for flexible circuit board production according to claim 1, wherein The control mechanism comprises a first threaded rod (10) rotatably arranged in a sliding groove (9) and rotatably penetrating two sliding blocks (8), each of which is provided with a through hole corresponding to the first threaded rod (10), and the two ends of the first threaded rod (10) are oppositely arranged, and one end of the first threaded rod (10) rotatably penetrates the side wall of the sliding seat (3) and is fixedly connected with a first rotating handle (11).

4. The coverlay attachment apparatus for flexible circuit board production of claim 1, wherein, The connecting mechanism comprises two clamping blocks (28), the upper wall of the cover shell (19) is provided with a connecting groove (26) corresponding to the output end of the hydraulic table (18), two telescopic grooves (27) are symmetrically arranged on the side wall of the connecting groove (26), two clamping blocks (28) are respectively arranged in the two telescopic grooves (27), and the two clamping blocks (28) are connected with the inner walls of the telescopic grooves (27) through springs (29), the output end side wall of the hydraulic table (18) is symmetrically provided with two clamping grooves corresponding to the clamping blocks (28), and the side walls of the two clamping blocks (28) close to the opening of the connecting groove (26) are inclined, and the two clamping blocks (28) are provided with corresponding pulling mechanisms.

5. The coverlay film attaching apparatus for flexible circuit board production according to claim 4, wherein The pulling mechanism comprises two pull rods (24), both of which are L-shaped, and both of which are fixedly arranged on the side walls of the two clamping blocks (28), both of which are slidably arranged through the upper wall of the cover shell (19), and the upper wall of the cover shell (19) is symmetrically provided with two strip-shaped sliding openings corresponding to the pull rods (24), and both of the pull rods (24) extend out of the hydraulic table (18).

6. The coverlay film attaching apparatus for flexible circuit board production according to claim 2, wherein The lower wall of the cover shell (19) is fixedly and slidably provided with a sealing soft rubber pad.

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