Perforating machine for flexible printed circuit board production

Abstract

The invention discloses a punching machine for flexible printed circuit board production, which comprises a rack, the rack comprises frame plates, a guide rail and a supporting cross beam are arranged between the two frame plates, an inclined platform is fixed on one side of the guide rail and one side of the supporting cross beam, a punching assembly is arranged between the two frame plates, and the punching assembly comprises a screw rod and a limiting rod. The surfaces of the lead screw and the limiting rod are sleeved with a moving platform, a stamping and punching machine is fixed to the bottom face of the moving platform, limiting mechanisms are arranged at the positions of the supporting cross beam and the guide rail, and the flexible circuit board stamping and punching machine which is efficient, accurate and high in adaptability is formed through a modular integrated mechanical structure. A stable rigid cavity is formed by a machine frame, symmetrical frames, guide rails and a supporting cross beam, the stable rigid cavity is matched with an inclined platform to achieve smooth guiding-in of a plate, the punching assembly adopts a lead screw to drive a moving platform, accurate positioning and moving of a single pneumatic punching head on transverse coordinates are achieved, and the punching requirements of different positions of a circuit board can be met.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing technology, specifically a drilling machine for producing flexible printed circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCBs) are flexible, bendable circuit boards made of flexible insulating substrates such as polyimide or polyester film. They are characterized by their thinness, flexibility, and high-density wiring, and are widely used in space-constrained electronic products such as mobile phones and medical devices that require three-dimensional assembly. Drilling machines are specialized equipment used to precisely process through holes on flexible circuits. Their function is to form micron-level through holes at specific locations on the board surface through mechanical drilling, laser ablation, or stamping processes to achieve electrical interconnection between different circuit layers.

[0003] In the prior art, publication number "CN119237968A" discloses a drilling machine for flexible printed circuit board production, including a base. The base is a hollow cuboid structure, and a support platform is provided above the base. The support platform has a two-section structure. The main body of the support platform is a hollow annular structure. A cylindrical structure with an open upper surface is fixedly connected to the inner surface of the annular support platform. Cylindrical through holes are provided on the upper and lower surfaces of the base. In this invention, the annular support platform supports the circuit boards. The annular support platform can accommodate multiple circuit boards at the same time. Correspondingly, a top plate of the same size is suspended above the support platform. A laser head is provided on the lower surface of the top plate. The ultraviolet laser emitted by the laser head is used to drill holes in the circuit boards. The laser head can rotate in a ring on the lower surface of the top plate. The rotating laser head, in conjunction with the annular support platform, allows multiple circuit boards to be drilled sequentially in a single feeding.

[0004] However, existing technologies still have significant shortcomings, such as: In the aforementioned devices and existing technologies, traditional flexible circuit board drilling machines often employ fixed punches or simple moving mechanisms, making it difficult to flexibly and accurately position and drill holes at different locations on the circuit board. This results in poor processing adaptability and often requires the cooperation of multiple machines. The feeding mechanism often relies on push plates or friction wheels for unidirectional propulsion, lacking effective lateral constraints and stable traction for thin and soft flexible boards, which can easily cause material deviation, wrinkling, or even tearing. Summary of the Invention

[0005] The purpose of this invention is to provide a punching machine for the production of flexible printed circuit boards, so as to solve the problems mentioned in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A punching machine for flexible printed circuit board production, comprising a rack, the rack comprises a frame plate, guide rails and support beams are respectively arranged between the two frame plates, an inclined platform is fixed on one side of the guide rails and support beams, a punching assembly is arranged between the two frame plates, the punching assembly comprises a lead screw and a limiting rod, a moving platform is sleeved on the surface of the lead screw and the limiting rod, a punch press is fixed on the bottom surface of the moving platform, a limiting mechanism is arranged at the position of the support beam and the guide rail, the limiting mechanism comprises an adjusting plate and a roller.

[0007] Preferably, the guide rails and support beams are respectively located near the front and back of the frame plate, and there is a cavity between the guide rails and support beams.

[0008] Preferably, the inclined platform is a right triangle, and the top surface of the support beam is a plane.

[0009] Preferably, the two ends of the lead screw and the limiting rod are connected with the frame plates on both sides, and the moving platform is threadedly connected with the surface of the lead screw.

[0010] Preferably, a servo motor is installed on the side surface of one of the frame plates, and a gear set is arranged on the frame plate at the corresponding position of the servo motor.

[0011] Preferably, the adjusting plate is located on the top surface of the guide rail, and the roller is located on the top surface of the support beam.

[0012] Preferably, the bottom end of the adjusting plate is matched with the inside of the guide rail, and the two are slidingly connected.

[0013] Preferably, a locking bolt is threadedly connected in the threaded hole on the top surface of the adjusting plate, and the locking bolt abuts against the bottom surface inside the guide rail.

[0014] Preferably, a limiting groove is formed on one side of the inside of the adjusting plate, and the adjusting plate has two groups, which are distributed on the left and right sides.

[0015] Preferably, a rotating rod is arranged on the top of the support beam, the rotating rod is connected with the frame plate at both ends, and an array of rollers is installed on the surface of the rotating rod.

[0016] Compared with the prior art, the present application has the following beneficial effects: Through the modular integrated mechanical structure, the high efficiency, precision and strong adaptability flexible circuit board punching press machine is formed, the frame is composed of symmetrical frame, guide rail and support beam to form stable rigid cavity, the smooth guide of plate is realized by cooperating with inclined platform, which provides ideal basic operation space for punching, the punching assembly adopts screw rod driving moving platform, realizes the accurate positioning and movement of single pneumatic punching head on horizontal coordinate, can cover the punching demand of different positions of circuit board, while ensuring the perpendicularity and consistency of punching force, greatly simplifies the complexity of multi-station design, and the limiting feeding mechanism composed of adjustable limiting adjusting plate and motor driven roller group cooperates to complete the accurate linear constraint and smooth friction traction of thin and soft plate, effectively solves the problems of easy deviation and wrinkle of flexible material in conveying, realizes automatic continuous production, and significantly improves the punching quality, efficiency and equipment reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall schematic diagram of the present application; Figure 2 It is the perspective view of the present application; Figure 3 It is the front view of the present application; Figure 4 It is the side view of the present application; Figure 5 It is the top view of the present application; Figure 6 It is the frame structure schematic diagram of the present application; Figure 7 It is the adjusting plate structure diagram of the present application.

[0018] In the drawing: 1, frame;11, frame plate;12, guide rail;13, support beam;14, inclined platform; 2, punching assembly;21, limiting rod;22, screw rod;23, moving platform;24, punching press; 3, limiting mechanism;31, rotating rod;32, roller;33, adjusting plate;34, locking bolt;35, limiting groove; 4, servo motor;5, gear set. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] Please refer to Figures 1-7 The present application provides a technical solution: Example 1: A drilling machine for flexible printed circuit board production: A punching machine for producing flexible printed circuit boards includes a frame 1. The frame 1 includes frame plates 11. Guide rails 12 and support beams 13 are respectively provided between the two frame plates 11. An inclined platform 14 is fixed to one side of each guide rail 12 and support beam 13. The guide rails 12 and support beams 13 are located near the front and back of the frame plates 11, respectively, and a cavity exists between the guide rails 12 and support beams 13. The inclined platform 14 is a right-angled triangle, and the top surface of the support beam 13 is flat. The frame plates 11 are symmetrically distributed on the left and right sides, and their structural shapes are identical. The guide rails 12 are located between the two frame plates 11 near the front, and similarly, the support beams 13 are located on the back. The guide rails 12 and support beams 13 connect and fix the frame plates 11 on both sides, and the portion between the guide rails 12 and support beams 13 is a cavity. This machine is mainly used for punching holes in flexible printed circuit boards. As the board passes through, it is punched and perforated by stamping. It is worth noting that inclined platforms 14 are fixed at both the support beam 13 and the guide rail 12. The inclined platforms 14 are right-angled triangles, mainly to allow the flexible printed circuit board to smoothly enter the frame 1 and wait to be punched. The symmetrical frame plates 11 on both sides are connected by the guide rail 12 and the support beam 13 to form a rigid whole, forming a stable working cavity. The right-angled triangular inclined platforms 14 fixed at the beam and the guide rail 12 use the inclined plane guiding principle to smoothly guide the circuit board from the outside into the frame 1, effectively avoiding curling, jamming or edge wear that may occur when the thin flexible material is fed. At the same time, the entire cavity structure provides an unobstructed working space for the punching and perforating assembly 2, ensuring that the punching force can act perpendicularly on the board surface. While ensuring the punching accuracy, it significantly improves the smoothness and reliability of continuous production. A punching assembly 2 is arranged between the two frame plates 11, the punching assembly 2 comprises a lead screw 22 and a limiting rod 21, the surface of the lead screw 22 and the limiting rod 21 is sleeved with a moving platform 23, the bottom surface of the moving platform 23 is fixed with a punching press 24, the two ends of the lead screw 22 and the limiting rod 21 are connected with the two frame plates 11 on the two sides, the moving platform 23 is threadedly connected with the surface of the lead screw 22, the punching press 24 in the punching assembly 2 is located on the bottom surface of the moving platform 23, the moving platform 23 is sleeved on the surface of the lead screw 22 and the limiting rod 21, and the moving platform 23 is threadedly connected with the surface of the lead screw 22, when the lead screw 22 rotates, the moving platform 23 can move horizontally and linearly along the surface of the lead screw 22 and the limiting rod 21 together with the punching press 24, so as to adjust the position of the punching press 24, after adjustment to the punching position, the circuit board is waited to enter the rack 1 to the set position, and then the punching treatment is realized by the pneumatic punching press, specifically, the high-frequency impact force is generated by the pneumatic driving punch head instantaneously, the flexible circuit board material is quickly penetrated like a seal, the punching is completed, through the cooperation of the lead screw 22 and the limiting rod 21, the punching unit is integrated on a platform that can move horizontally and accurately, so that a single punching machine can be flexibly moved to different coordinate points of the circuit board according to the program setting, while ensuring the consistency and perpendicularity of the punching force of each hole, the equipment structure is greatly simplified and the cost of the multi-punch head system is reduced, and high-efficiency and accurate automatic punching of the flexible circuit board is realized.

[0021] A servo motor 4 is installed on the side surface of the one side frame plate 11, the side frame plate 11 at the corresponding position of the servo motor 4 is provided with a gear set 5, the side surface of the one side frame plate 11 is installed with the gear set 5, the adjacent gears are engaged with each other, and the servo motor 4 can transmit kinetic energy to the lead screw 22 under the action of the gears after working, so as to realize the rotation of the lead screw 22.

[0022] Example 2: A limiting mechanism 3 is provided at the position of the supporting beam 13 and the guide rail 12. The limiting mechanism 3 includes an adjusting plate 33 and a roller 32. The adjusting plate 33 is located on the top surface of the guide rail 12, and the roller 32 is located on the top surface of the supporting beam 13. The bottom end of the adjusting plate 33 cooperates with the inside of the guide rail 12 and the two are slidably connected. A locking bolt 34 is threaded into the threaded hole on the top surface of the adjusting plate 33, and the locking bolt 34 abuts against the bottom surface inside the guide rail 12. A limiting groove 35 is opened on the inner side of the adjusting plate 33, and there are two sets of adjusting plates 33, which are distributed left and right. A rotating rod 31 is provided at the top of the supporting beam 13, and both ends of the rotating rod 31 are connected to the frame plate 11. The array is mounted on the surface of the rotating rod 31. The limiting mechanism 3 is divided into two parts. One part is located at the guide rail 12. The adjusting plate 33 allows the circuit board to be drilled to enter the frame 1 along a prescribed route, passing through the opening assembly and preventing the circuit board from shifting. The other part uses rollers 32 to clamp the circuit board between the support beam 13 and the rollers 32. The rotation of the rollers 32 allows the circuit board to move on its own. To further explain, the adjusting plate 33 is located inside the slide rail. The two work together. The locking bolt 34 can be manually rotated to separate one end from the inside of the guide rail 12. At this time, the position of the adjusting plate 33 can be manually adjusted. Similarly, after adjustment... Screw in the locking bolt 34. The force of the locking bolt 34 against the inner surface of the guide rail 12 fixes the position of the adjusting plate 33, ensuring that the spacing between the adjusting plates 33 after adjustment allows the circuit board to be drilled to pass through. At the same time, a limit groove 35 is opened on one side of the adjusting plate 33. The two sides of the circuit board must be aligned with the limit groove 35 and pass through the limit groove 35 to limit the circuit board. The rollers 32 are arrayed and fixed on the surface of the rotating rod 31. After adding a motor to the rotating rod 31, it can be rotated. When the circuit board is placed in the position of the rollers 32, the two contact. Under the action of the rotation of the rollers 32, the circuit board can be pulled out from the back of the frame 1, realizing the function of automated drilling. Specifically, through The coordinated operation of the guide limit and friction transmission modules enables high-precision conveying control of flexible circuit boards. The adjustable plate 33 located at the guide rail 12 provides rigid lateral constraints for the circuit board through its limit groove 35, ensuring that the board enters the stamping station along a straight path and completely eliminating lateral deviation. Meanwhile, the array of rollers 32 at the support beam 13 generates uniform rolling friction through motor drive, stably pulling the board forward like a conveyor belt, replacing the traditional pushing feeding method. This avoids wrinkles or jamming of thin flexible boards during conveying, and greatly improves the smoothness and reliability of thin flexible circuit boards in automated drilling while ensuring positioning accuracy.

[0023] Working principle: The puncher is mainly composed of a rack 1, a punching assembly 2, a limiting mechanism 3 and other main parts. The punching assembly 2 and the limiting mechanism 3 are located at different positions of the rack 1 and form a whole after installation. The limiting mechanism 3 plays a limiting role on the flexible printed circuit board during punching, ensuring that the circuit board can pass through the punching assembly 2. By adjusting the horizontal position of the punching assembly 2, it can be located at different positions of the circuit board. The automatic punching processing of the flexible printed circuit board is realized by stamping, and the structure is simple.

[0024] Specifically, the frame plates 11 are symmetrically distributed on the left and right sides, and their structures are the same. The position between the two frame plates 11 and close to the front is a guide rail 12, and the position close to the back is a support beam 13. The two frame plates 11 are connected and fixed by the guide rail 12 and the support beam 13. The part between the guide rail 12 and the support beam 13 is a cavity, which is mainly used for stamping and punching the flexible printed circuit board by stamping when it passes through. It should be noted that the support beam 13 and the guide rail 12 are both fixed with inclined platforms 14, which are right triangles, mainly to make the flexible printed circuit board smoothly enter the rack 1 and wait to be punched. The two symmetric frame plates 11 are connected into a rigid whole by the guide rail 12 and the support beam 13, forming a stable working cavity. The right triangle inclined platform 14 fixed at the position of the beam and the guide rail 12 uses the principle of inclined surface guidance to guide the circuit board from the outside to the inside of the rack 1, effectively avoiding the curling, jamming or edge wear of the thin flexible material during feeding. At the same time, the whole cavity structure provides an unobstructed working space for the stamping and punching assembly 2, ensuring that the stamping force can act vertically on the board surface, improving the smoothness and reliability of continuous production while ensuring punching accuracy.

[0025] The punch press 24 in the punching assembly 2 is located at the bottom surface of the moving platform 23, the moving platform 23 is sleeved on the surface of the lead screw 22 and the limiting rod 21 at the same time, and the moving platform 23 is threadedly connected with the surface of the lead screw 22. When the lead screw 22 rotates, the moving platform 23 can move linearly along the surface of the lead screw 22 and the limiting rod 21 together with the punch press 24, so as to complete the position adjustment of the punch press 24. After adjustment to the punching position, the circuit board is waited to enter the rack 1 to the set position, and then the punching is realized by the way of pneumatic punch pressing. Specifically, the high-frequency impact force is generated by the pneumatic driving punch head instantaneously, which quickly penetrates the flexible circuit board material like a seal, completes the punching, and integrates the punch unit on a platform that can move horizontally and accurately through the cooperation of the lead screw 22 and the limiting rod 21, so that a single punch machine can be flexibly moved to different coordinate points of the circuit board according to the program setting, ensuring the consistency and perpendicularity of the punching force of each hole, greatly simplifying the equipment structure and reducing the cost of the multi-punch system, realizing the high-efficiency and accurate automatic punch pressing of the flexible circuit board. Further, the side surface of one side frame plate 11 is provided with a gear set 5, adjacent gears are engaged with each other, and kinetic energy can be transmitted to the lead screw 22 after the servo motor 4 works under the action of the gears, so as to realize the rotation of the lead screw 22.

[0026] The limiting mechanism 3 is divided into two parts. One part is located at the guide rail 12, and the required punching circuit board can enter the rack 1 according to the specified route to pass through the opening assembly and prevent the circuit board from deviating through the adjusting plate 33. The other part is to clamp the circuit board between the supporting beam 13 and the roller 32 through the roller 32, and the circuit board is moved by the rotation of the roller 32. Further, the adjusting plate 33 is located in the slide rail, and the two are matched with each other. The locking bolt 34 can be rotated manually to separate one end from one side of the guide rail 12. At this time, the personnel can manually adjust the position of the adjusting plate 33. In the same way, after adjustment, the locking bolt 34 is screwed in, and the position of the adjusting plate 33 is fixed by the force of the locking bolt 34 abutting against one side of the guide rail 12, so as to ensure that the spacing between the adjusted adjusting plates 33 can pass through the required punching circuit board. At the same time, a limiting groove 35 is formed on one side of the adjusting plate 33, and the circuit board needs to be aligned with the limiting groove 35 and pass through the limiting groove 35, so as to limit the circuit board. The rollers 32 are arrayed and fixed on the surface of the rotating rod 31. The rotating rod 31 can be rotated after being provided with a motor. At this time, the circuit board is located at the position of the roller 32, and the two are in contact. Under the action of the rotation of the roller 32, the circuit board can be pulled out from the back of the rack 1, realizing the function of automatic punching.

[0027] Specifically, through the cooperation of the guide limiting and friction transmission double modules, high-precision conveying control of the flexible circuit board is realized. The adjustable adjusting plate 33 at the guide rail 12 provides rigid lateral constraint for the circuit board through the limiting groove 35, ensuring that the board body enters the punching station along a straight path and completely eliminates lateral deviation. The array of roller groups 32 at the support beam 13 generates uniform rolling friction through motor drive, stably pulling the board body forward like a conveyor belt, replacing the traditional pushing and feeding mode, avoiding wrinkles or jamming of the thin and soft board during conveying, while ensuring positioning accuracy, greatly improving the smoothness and reliability of the thin flexible circuit board in automatic punching.

[0028] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, replacements, and variations can be made thereto by those skilled in the art without departing from the principles and spirit of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A punching machine for producing flexible printed circuit boards, characterized in that: The machine includes a frame (1), which includes a frame plate (11). A guide rail (12) and a support beam (13) are respectively provided between the two frame plates (11). An inclined platform (14) is fixed on one side of the guide rail (12) and the support beam (13). A punching assembly (2) is provided between the two frame plates (11). The punching assembly (2) includes a lead screw (22) and a limiting rod (21). A moving platform (23) is sleeved on the surface of the lead screw (22) and the limiting rod (21). A punching machine (24) is fixed on the bottom surface of the moving platform (23). A limiting mechanism (3) is provided at the position of the support beam (13) and the guide rail (12). The limiting mechanism (3) includes an adjusting plate (33) and a roller (32).

2. The drilling machine for flexible printed circuit board production according to claim 1, characterized in that: The guide rail (12) and the support beam (13) are located near the front and back of the frame plate (11), respectively, and there is a cavity between the guide rail (12) and the support beam (13).

3. The drilling machine for flexible printed circuit board production according to claim 1, characterized in that: The inclined platform (14) is a right triangle, and the top surface of the supporting beam (13) is a plane.

4. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: Both ends of the lead screw (22) and the limiting rod (21) are connected to the side frame plates (11) on both sides, and the moving platform (23) is threadedly connected to the surface of the lead screw (22).

5. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: A servo motor (4) is installed on the side of one side of the frame plate (11), and a gear set (5) is provided at the frame plate (11) at the corresponding position of the servo motor (4).

6. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: The adjusting plate (33) is located on the top surface of the guide rail (12), and the roller (32) is located on the top surface of the supporting beam (13).

7. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: The bottom end of the adjustment plate (33) cooperates with the inside of the guide rail (12), and the two are slidably connected.

8. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: The top threaded hole of the adjusting plate (33) is threaded with a locking bolt (34), and the locking bolt (34) abuts against the bottom surface inside the guide rail (12).

9. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: The inner side of the adjustment plate (33) has a limiting groove (35), and there are two sets of adjustment plates (33), which are distributed on the left and right.

10. A drilling machine for producing flexible printed circuit boards according to claim 1, characterized in that: The top of the supporting beam (13) is provided with a rotating rod (31), and both ends of the rotating rod (31) are connected to the frame plate (11), and an array of rollers (32) is installed on the surface of the rotating rod (31).

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