Flexible circuit board trepanning device

Abstract

The utility model discloses a flexible circuit board trepanning device, and belongs to the technical field of flexible circuit board processing. The device mainly comprises a base; the punching assembly is mounted on the base, and the punching assembly is provided with a drill bit part for punching the flexible circuit board and a mounting frame for supporting the drill bit part; the cooling assembly is installed on the base, and the cooling assembly is provided with a fan for cooling the punching position, a first gear for driving the fan to rotate and a first rack for driving the first gear to rotate; and the cleaning assembly is mounted on the side surface of the mounting frame, and the cleaning assembly is provided with a cleaning brush for cleaning the surface of the flexible circuit board. According to the flexible circuit board punching device, when the punching assembly is used for punching, the first rack is meshed with the first gear on the fan rotating shaft to drive the fan to rotate, and airflow generated by the fan can timely cool the local position of the flexible circuit board during punching.

Description

Technical Field

[0001] This application relates to the field of flexible circuit board processing technology, specifically to a flexible circuit board opening device. Background Technology

[0002] In the field of modern electronic equipment manufacturing, flexible printed circuit boards (FPCBs) are widely used in smartphones, tablets, wearable devices, and automotive electronics due to their flexibility, thinness, and flexible wiring. As electronic products continue to evolve towards miniaturization and high performance, the requirements for the processing precision and quality of FPCBs are becoming increasingly stringent. In the production process of FPCBs, hole drilling is a critical processing step.

[0003] For example, the patent with publication number CN220173491 U discloses a drilling device for processing flexible circuit boards, which includes a body, a drilling bit, a drilling table, a first slider, a base, a placement block, a threaded rod and a limiting nut, thereby fixing the placement block and adjusting the distance between the two sets of placement blocks to place flexible circuit boards of different sizes.

[0004] When the aforementioned patented drilling device is in use, the drill bit rotates at high speed, generating intense friction with the flexible circuit board material. This continuous and high-intensity friction generates heat. Due to the limited thermal conductivity of the flexible circuit board, the heat cannot be dissipated quickly and effectively, thus accumulating in localized areas. As the heat continues to accumulate, the temperature of the circuit board rises, and excessively high temperatures can damage the practical performance of the circuit board. Therefore, it is necessary to provide a flexible circuit board drilling device to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a flexible circuit board drilling device, which solves the problem that when the drilling device of the above-mentioned patent is working, the drilling bit and the flexible circuit board generate heat through friction, and the heat accumulates due to the poor thermal conductivity of the circuit board, which damages the practical performance of the circuit board.

[0007] The technical solution adopted by this application to solve its technical problem is: a flexible circuit board drilling device, including a base; a drilling assembly, which is mounted on the base, the drilling assembly having a drill head for drilling holes in the flexible circuit board and a mounting bracket for supporting the drill head; a cooling assembly, which is mounted on the base, the cooling assembly having a fan for cooling the drilling position, a first gear for driving the fan to rotate, and a first rack for driving the first gear to rotate; and a cleaning assembly, which is mounted on the side of the mounting bracket, the cleaning assembly having a cleaning brush for cleaning the surface of the flexible circuit board.

[0008] Furthermore, a fixing component is installed on the base. The fixing component includes a base plate installed on the base, a first moving unit installed on the base plate, and the first moving unit includes a long groove plate installed on the base plate. The long groove plate has a groove, a lead screw is installed in the bearing inside the long groove plate, and a first movable seat is threadedly connected to the lead screw. The first movable seat has a placement platform.

[0009] Furthermore, a turntable is installed at one end of the lead screw.

[0010] Furthermore, the cooling assembly includes a second movable unit mounted on the base. The second movable unit and the first movable unit have similar structures. The first movable seat of the second movable unit is defined as the second movable seat. The first rack is mounted on the second movable seat and has a first smooth section.

[0011] Furthermore, the fan has a fan frame, and the fan is connected to the mounting bracket via the fan frame. The mounting bracket has a through slot slightly smaller than the fan frame. The fan has a rotating shaft, and the first gear is mounted on the rotating shaft.

[0012] Furthermore, the cleaning assembly includes a hollow rod installed on the side of the mounting bracket, a movable rod that moves through the hollow rod, a side joint that is connected to the side of the hollow rod, a worm gear that is mounted on the side joint with a bearing, a worm wheel that is installed inside the side joint and meshes with the worm gear, and a second rack that is installed on the side of the movable rod.

[0013] Furthermore, one end of the worm gear passes through the side connection portion, a second gear is installed at one end of the worm gear, a third rack is installed on the side of the second movable seat, the third rack is adapted to mesh with the second gear, and the cleaning brush is installed at one end of the moving rod.

[0014] The beneficial effects of this application are as follows: The flexible circuit board drilling device provided in this application utilizes a first rack and a first gear on a fan shaft to drive the fan to rotate during drilling. The airflow generated by the fan can effectively cool down local areas of the flexible circuit board during drilling, thus solving the problem of heat accumulation caused by friction between the drill bit and the circuit board during the drilling process.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram of a flexible circuit board opening device according to this application;

[0019] Figure 2 for Figure 1 A partial structural diagram;

[0020] Figure 3 for Figure 2 A partial structural diagram;

[0021] Figure 4 for Figure 3 A partial structural diagram;

[0022] Figure 5 for Figure 4 Enlarged view of point A;

[0023] The following are the labeling elements in the figure:

[0024] 1. Placement component; 11. Base; 12. Frame; 13. Dust cover; 2. Drilling component; 21. Mounting bracket; 22. First cylinder; 23. Drill head; 3. Fixing component; 31. Base plate; 32. Long slot plate; 33. Lead screw; 34. Turntable; 35. First movable seat; 36. Side plate; 37. Second cylinder; 38. Clamping plate; 4. Cooling component; 41. First rack; 42. Fan; 43. First gear; 44. Restriction part; 5. Cleaning component; 51. Collection box; 52. Cover; 53. Hollow rod; 54. Moving rod; 55. Second rack; 56. Side connection part; 57. Worm gear; 58. Second gear; 59. Worm wheel; 510. Cleaning brush; 511. Third rack. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] like Figures 1-5 As shown, this application provides a flexible circuit board opening device, including a placement component 1. The placement component 1 includes a base 11, and a frame 12 is fixedly installed on the top of the base 11. The frame 12 is trapezoidal, and a dust cover 13 is hinged to the frame 12.

[0028] A drilling assembly 2 is installed on the base 11. The drilling assembly 2 includes a mounting bracket 21 fixedly installed on the base 11, and a first cylinder 22 is fixedly installed on the side of the mounting bracket 21. A drill head 23 is fixedly installed on the telescopic end of the first cylinder 22. The drill head 23 consists of a drive motor and a drilling bit. The drill head 23 is adapted to move closer to or further away from the flexible circuit board as the telescopic end of the first cylinder 22 moves. The drilling bit is adapted to rotate with the output end of the drive motor to drill holes in the surface of the flexible circuit board.

[0029] To clamp and fix flexible circuit boards and improve drilling stability, such as Figures 2-4 As shown, a fixing assembly 3 is installed on the base 11. The fixing assembly 3 includes a base plate 31 fixedly installed on the base 11, and a first moving unit is installed on the base plate 31. The first moving unit includes a long groove plate 32 fixedly installed on the base plate 31. The long groove plate 32 has a groove, and a lead screw 33 is bearing installed in the long groove plate 32. A turntable 34 is fixedly installed at one end of the lead screw 33. The turntable 34 is adapted to drive the lead screw 33 to rotate.

[0030] Furthermore, a first movable seat 35 is threadedly connected to the lead screw 33. The width of the first movable seat 35 is adapted to the width of the groove. The first movable seat 35 has a placement platform (not shown in the figure). The placement platform is used to place the flexible circuit board. Side plates 36 are fixedly installed at both ends of the placement platform. A second cylinder 37 is fixedly installed on the side of the two sets of side plates 36 that are far apart from each other. The telescopic end of the second cylinder 37 passes through the side plate 36. A clamping plate 38 is fixedly installed on the telescopic end of the second cylinder 37.

[0031] Rotating the turntable 34 drives the lead screw 33 to rotate within the long slot plate 32, causing the threaded first movable seat 35 to move to a suitable position within the groove, which is suitable for moving the flexible circuit board placed on the placement platform to a designated position. At the same time, the second cylinder 37 can be activated, and its telescopic end pushes the clamping plate 38 to clamp and fix the circuit board from both ends, thereby improving the stability of the flexible circuit board during drilling.

[0032] To cool down specific areas of the flexible circuit board during drilling, such as... Figures 3-5 As shown, a cooling component 4 is installed on the base 11. The cooling component 4 includes a second moving unit fixedly installed on the base 11. The second moving unit and the first moving unit have similar structures. It should be noted that the second moving unit is different from the first moving unit in that it is driven by a forward and reverse motor. Here, the first movable seat 35 of the second moving unit is defined as the second movable seat, and a first rack 41 is fixedly installed on the second movable seat. The first rack 41 has a first smooth section.

[0033] A fan 42 is fixedly mounted on the mounting bracket 21. The fan 42 has a fan frame, and the fan 42 is connected to the mounting bracket 21 through the fan frame. A through slot slightly smaller than the fan frame is provided on the mounting bracket 21. The fan 42 has a rotating shaft, and a first gear 43 is fixedly mounted on the rotating shaft. In the default state, the first gear 43 is in the first smooth section position. One end of the rotating shaft has a limiting part 44, and one end of the limiting part 44 is connected to the back of the mounting bracket 21 (see reference). Figure 4 );

[0034] Therefore, when the drilling assembly 2 drills a hole in the flexible circuit board, the forward and reverse motors of the second moving unit are activated to drive the second movable seat to move. At this time, the teeth on the first gear 43 gradually come into contact with and mesh with the first gear 43, thereby driving the fan 42 to rotate and generate airflow, which can cool the local area of ​​the flexible circuit board during drilling, effectively alleviate the problem of heat accumulation caused by the friction between the drilling drill bit and the flexible circuit board, and prevent the circuit board from being damaged due to overheating.

[0035] In order to collect the waste generated during drilling simultaneously, such as Figure 3 and Figure 5 As shown, a cleaning assembly 5 is installed on the side of the mounting bracket 21. The cleaning assembly 5 includes a hollow rod 53 fixedly installed on the side of the mounting bracket 21, and a movable rod 54 movably passes through the hollow rod 53. A side connection part 56 is connected and installed on the side of the hollow rod 53, and a worm gear 57 is bearingly installed on the side connection part 56. At the same time, a worm wheel 59 is fixedly installed in the side connection part 56 at one side of the worm gear 57. The worm wheel 59 meshes with the worm gear 57. Meanwhile, a second rack 55 that meshes with the worm wheel 59 is fixedly installed on the side of the movable rod 54.

[0036] Furthermore, one end of the worm gear 57 passes through the side connection 56, and a second gear 58 is fixedly installed at one end of the worm gear 57. At the same time, a third rack 511 is fixedly installed on the side of the second movable seat. The third rack 511 is adapted to mesh with the second gear 58. Meanwhile, a cleaning brush 510 is fixedly installed at one end of the moving rod 54. The cleaning brush 510 is in the default state at one side of the placement platform (i.e., the front side of the fan 42) and does not affect the heat dissipation of the fan 42 to the drilled position.

[0037] It should be noted that, in the initial state, the horizontal distance between the first rack 41 and the base 11 is less than the horizontal distance between the third rack 511 and the base 11. At the same time, when the first rack 41 passes the first gear 43, the drilling assembly 2 stops drilling the flexible circuit board. At this time, the third rack 511 gradually approaches and engages with the second gear 58, thereby driving the moving rod 54 to extend out of the hollow rod 53.

[0038] Furthermore, a collection box 51 is snapped onto the base plate 31, and a cover 52 is fixedly installed on the collection box 51. The collection box 51 is used to collect drilling waste.

[0039] Before the drilling operation begins, all components are in their initial positions. The cleaning brush 510 is positioned by default on one side of the platform (in front of the fan 42), without affecting the fan 42's heat dissipation at the drilling location. The horizontal distance between the first rack 41 and the base 11 is less than the horizontal distance between the third rack 511 and the base 11. The collection box 51 is snapped onto the base plate 31, and the cover 52 is fixed to the collection box 51.

[0040] When the drilling assembly 2 starts drilling holes in the flexible circuit board, the forward and reverse motors of the second moving unit begin to operate, driving the second movable seat to move. As the second movable seat moves, the first rack 41 fixed on it also moves. When the first rack 41 moves to contact and mesh with the first gear 43 on the fan 42 shaft, it drives the fan 42 to rotate, cooling the localized area of ​​the flexible circuit board during drilling. At this time, the third rack 511 has not yet contacted the second gear 58, and the cleaning assembly 5 has not yet started.

[0041] When the first rack 41 passes the first gear 43, the drilling assembly 2 pauses its drilling operation on the flexible circuit board. Simultaneously, as the second movable seat continues to move, the third rack 511 gradually approaches and engages with the second gear 58. The second gear 58 is fixed to one end of the worm gear 57, and the engagement of the third rack 511 with the second gear 58 causes the worm gear 57 to begin rotating.

[0042] Since the worm 57 meshes with the worm wheel 59, and the worm wheel 59 meshes with the second rack 55 fixed on the side of the moving rod 54, the rotation of the worm 57 drives the worm wheel 59 to rotate, and then through the meshing of the worm wheel 59 with the second rack 55, the moving rod 54 is driven to extend out of the hollow rod 53.

[0043] When the movable rod 54 extends, the cleaning brush 510 fixed at one end moves accordingly to sweep away the debris generated from drilling on the platform. During the sweeping process, the cover 52 prevents the debris from flying and allows it to be collected more concentratedly into the collection box 51, achieving effective collection of drilling debris.

[0044] After the waste debris is cleaned up, the forward and reverse motors of the second moving unit reverse, causing the second movable seat to move in the opposite direction. The third rack 511 disengages from the second gear 58, and the moving rod 54 retracts into the hollow rod 53 under the corresponding transmission action, returning the cleaning brush 510 to its initial position. Afterward, the drilling assembly 2 can continue with the next round of drilling operations, and the entire process repeats continuously.

[0045] Through ingenious structural design, when the drilling assembly 2 starts drilling, the second moving unit drives the first rack 41 to move, which in turn meshes with the first gear 43 on the fan 42 shaft, driving the fan 42 to rotate. The airflow generated by the fan 42 can cool down local areas of the flexible circuit board during drilling, effectively solving the problem of heat accumulation caused by friction between the drill bit and the circuit board during traditional drilling. This prevents the circuit board from being damaged due to overheating, thus improving product quality and yield.

[0046] When the first rack 41 passes the first gear 43 and the drilling assembly 2 pauses operation, the subsequent structural transmission is triggered. The third rack 511 meshes with the second gear 58, driving the worm gear 57 to rotate. This, in turn, through the engagement of the worm wheel 59 and the second rack 55, causes the moving rod 54 to extend, driving the cleaning brush 510 to sweep away the waste generated during drilling on the platform. The inclusion of the cover 52 and the collection box 51 makes waste removal more efficient and environmentally friendly, preventing the impact of flying waste on the working environment and equipment. It also enables centralized collection of waste for easier subsequent processing.

[0047] The forward and reverse motors of the second moving unit control the reciprocating movement of the second movable seat, thereby automating the entire process of fan 42 starting to cool down, cleaning brush 510 cleaning up debris, and resetting all components. After completing one round of drilling, cooling, and cleaning, the device can automatically reset to prepare for the next round of drilling, and the whole process is repeated cyclically.

[0048] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flexible circuit board via forming apparatus, characterized by: It includes: Base (11); Punching assembly (2), which is installed on the base (11), the punching assembly (2) has a drill bit (23) for punching flexible circuit board, and a mounting bracket (21) for supporting the drill bit (23); Cooling assembly (4), which is installed on the base (11), the cooling assembly (4) has a fan (42) for cooling the punching position, a first gear (43) for driving the fan (42) to rotate, and a first rack (41) for driving the first gear (43) to rotate; Cleaning assembly (5), which is installed on the side of the mounting bracket (21), the cleaning assembly (5) has a cleaning brush (510) for cleaning the surface of the flexible circuit board.

2. The flexible circuit board hole opening apparatus according to claim 1, wherein: The base (11) is provided with a fixing assembly (3), which includes a base plate (31) installed on the base (11), a first moving unit installed on the base plate (31), the first moving unit including a long slot plate (32) installed on the base plate (31), the long slot plate (32) having a groove, a lead screw (33) installed in the long slot plate (32) through a bearing, a first movable seat (35) threadedly connected to the lead screw (33), and a placing platform provided on the first movable seat (35).

3. The flexible circuit board hole opening apparatus according to claim 2, wherein: One end of the lead screw (33) is provided with a rotating disc (34).

4. The flexible circuit board hole opening apparatus according to claim 3, wherein: The cooling assembly (4) includes a second moving unit installed on the base (11), the second moving unit and the first moving unit are similar structures, the first movable seat (35) of the second moving unit is defined as a second movable seat, the first rack (41) is installed on the second movable seat, and the first rack (41) has a first smooth section.

5. The flexible circuit board hole opening apparatus according to claim 4, wherein: The fan (42) has a fan frame, the fan (42) is connected to the mounting bracket (21) through the fan frame, a through slot smaller than the fan frame is formed in the mounting bracket (21), the fan (42) has a rotating shaft, and the first gear (43) is installed on the rotating shaft.

6. The flexible circuit board hole opening apparatus according to claim 4, wherein: The cleaning assembly (5) includes a hollow rod (53) installed on the side of the mounting bracket (21), a moving rod (54) movably penetrating the hollow rod (53), a side connecting portion (56) installed on the side of the hollow rod (53), a worm (57) installed on the side connecting portion (56) through a bearing, a worm wheel (59) installed in the side connecting portion (56), the worm wheel (59) being engaged with the worm (57), and a second rack (55) installed on the side of the moving rod (54).

7. The flexible circuit board hole opening apparatus according to claim 6, wherein: One end of the worm (57) penetrates the side connecting portion (56), a second gear (58) is installed at one end of the worm (57), a third rack (511) is installed on the side of the second movable seat, the third rack (511) is adapted to be engaged with the second gear (58), and the cleaning brush (510) is installed at one end of the moving rod (54).

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