Secondary drilling device for PCB platemaking

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
Through the coordination design of the lifting mechanism and the drilling mechanism and the spring protection mechanism, the drilling problem during the PCB plate making secondary drilling process is solved, the drill bit protection and hole accuracy are achieved, and the damage to the PCB plate is avoided.

CN223093978UActive Publication Date: 2025-07-11ZHENJIANG XIATAI ELECTRONIC TECH CO LTD

View PDF 0 Cites 0 Cited by

Patent Information

Application Number: CN202421969812.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-08-14
Publication Date: 2025-07-11
Estimated Expiration: 2034-08-14

AI Technical Summary

Technical Problem

The prior art has problems such as drilling, hole loss, hole position deviation, shift, hole size, small hole, hole size distortion, leaking drilling, hole failure, hole failure and hole blockage during the secondary drilling of PCB plate. Especially when drilling hard metal materials, it is easy to damage the PCB board structure and lead to rupture.

Method used

A secondary drilling device for making PCB plates is designed. Through the cooperation of the lifting mechanism and the drilling mechanism, the drilling mechanism rotates simultaneously while falling, and a spring is provided between the drill bit and the middle transmission tube. The spring squeezes the drill bit and retracts when encountering hard matter to protect the drill bit and the PCB plate.

Benefits of technology

Effectively protect the drill bit and PCB board from damage, improve the success rate and accuracy of drilling, and avoid rupture of PCB board.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN223093978U_ABST

Patent Text Reader

Abstract

The utility model relates to a drilling device, in particular to a secondary drilling device for PCB (printed circuit board) platemaking, which comprises a base, a vertical guide rail is arranged above the base, a transverse connecting plate is slidably arranged in the vertical guide rail, and a drilling mechanism is rotatably arranged on the transverse connecting plate; a lifting mechanism is further arranged on the side, away from the drilling mechanism, of the vertical guide rail, the lifting mechanism is matched with the drilling mechanism, the lifting mechanism drives the drilling mechanism to descend synchronously when descending, the drilling mechanism rotates synchronously when descending, and the lifting mechanism drives the drilling mechanism to ascend synchronously when ascending. Through mutual cooperation of the lifting mechanism and the drilling mechanism, the drilling mechanism is driven to descend while the lifting mechanism descends, and the lifting mechanism and the drilling mechanism are combined through the transmission structure, so that the drilling mechanism can synchronously rotate while descending; and therefore, the drill bit in the drilling mechanism can synchronously rotate to drill the PCB while descending.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to a drilling device, in particular to a secondary drilling device for PCB plate making. Background Technique

[0002] The PCB board is the circuit board and wiring board. PCB drilling is a process and also a very important step in PCB plate making. It is mainly to drill holes in the board. For wiring needs, a via hole needs to be drilled. For structural needs, a hole is drilled for positioning, etc. Since the PCB board sometimes needs to be used by stacking multiple layers of boards together, it is necessary to drill holes in multiple layers of boards uniformly. The holes in multiple layers of boards are not drilled all at once. Some holes are buried in the circuit board and not drilled through, and some are drilled through on the board, so there is a first drilling and a second drilling.

[0003] The first drilling requires a copper deposition process, that is, plating copper in the hole to enable connection between the upper and lower layers, such as via holes, component holes, etc.

[0004] The holes for the second drilling are the holes that do not require copper deposition, such as screw holes, positioning holes, heat dissipation grooves, etc. There is no need for copper in these holes. The second drilling must be after the first drilling, that is, the processes are separated.

[0005] Many problems will be encountered during the second drilling, such as broken drill bits, hole damage, hole position deviation and displacement, misalignment, hole size too large, hole size too small, aperture distortion, missed drilling, holes not drilled through, hole blockage, and various other problems;

[0006] In the existing drilling manufacturing process, for holes not drilled through, generally a hard drill bit is used to drill the hole. When encountering a relatively thick multi-layer PCB board, it is difficult to form a hole in one drilling. And when encountering hard metal substances, the hard drill bit will damage the structure of the PCB board, resulting in the rupture of the PCB board. Content of the Utility Model

[0007] The purpose of the utility model is to provide a secondary drilling device for PCB plate making to solve the problems put forward in the above background technique.

[0008] To achieve the above purpose, the utility model provides the following technical solution:

[0009] A secondary drilling device for PCB plate making includes a base. A vertical guide rail is arranged above the base. A transverse connecting plate is slidably arranged inside the vertical guide rail. A drilling mechanism is rotatably arranged on the transverse connecting plate;

[0010] On the side of the vertical guide rail facing away from the drilling mechanism, a lifting mechanism is further provided. The lifting mechanism cooperates with the drilling mechanism. When the lifting mechanism descends, it drives the drilling mechanism to descend synchronously, and while the drilling mechanism is descending, it also rotates synchronously. When the lifting mechanism ascends, it drives the drilling mechanism to ascend synchronously.

[0011] The secondary drilling device for PCB manufacturing as described above: The lifting mechanism includes a motor, a lead screw, and a threaded sleeve. The motor is arranged above the base. The lead screw is connected to the output shaft of the motor. The threaded sleeve is rotatably connected to the lead screw, and one end of the threaded sleeve close to the vertical guide rail is connected to the transverse connecting plate. The top of the vertical guide rail is connected to the motor through a bracket. A bearing is arranged on the base and rotatably connected to the lead screw.

[0012] The secondary drilling device for PCB manufacturing as described above: A first pulley is arranged on the output shaft of the motor. A second pulley is rotatably arranged above the base, and the first pulley and the second pulley are connected by a belt.

[0013] The secondary drilling device for PCB manufacturing as described above: The drilling mechanism includes an upper transmission pipe and a middle transmission pipe. The upper transmission pipe is connected to the second pulley. A first vertical groove is opened inside the upper transmission pipe. A protrusion is arranged on the inner wall of the middle transmission pipe, and the middle transmission pipe and the upper transmission pipe are slidably matched through the first vertical groove and the protrusion. A bearing is arranged inside one end of the transverse connecting plate facing away from the vertical guide rail and rotatably connected to the middle transmission pipe.

[0014] The secondary drilling device for PCB manufacturing as described above: The drilling mechanism further includes a lower transmission pipe and a drill bit. The lower transmission pipe is connected to the bottom of the middle transmission pipe. A second vertical groove is opened inside the lower transmission pipe. A corresponding protrusion is arranged on the drill bit. The top of the drill bit is arranged inside the lower transmission pipe and is slidably matched with the lower transmission pipe.

[0015] The secondary drilling device for PCB manufacturing as described above: A spring abuts against the top of the drill bit, and the top of the spring abuts against the bottom of the middle transmission pipe. The spring is already in a compressed state in the initial state.

[0016] The secondary drilling device for PCB manufacturing as described above: A support plate is arranged on the side of the vertical guide rail, and a circular through groove is opened on the support plate. The upper transmission pipe rotates inside the circular through groove, and a bracket and a bearing are also arranged on the support plate and rotatably connected to the top of the upper transmission pipe.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: by the mutual cooperation of the lifting mechanism and the drilling mechanism, when the lifting mechanism descends, it drives the drilling mechanism to descend at the same time, and the lifting mechanism and the drilling mechanism are combined through a transmission structure, so that the drilling mechanism rotates synchronously while descending, so that the drill bit in the drilling mechanism rotates synchronously while descending to drill the PCB; the utility model also sets a spring between the drill bit and the bottom of the middle transmission pipe, and the spring is in a compressed state from the beginning, so that when the drill bit encounters some hard substances while drilling the multi-PCB board, it will not blindly drill. When encountering hard substances, the drill bit will push up the spring, so that the drill bit retracts, thus playing a certain protective role for both the drill bit and the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a three-dimensional structural diagram of a secondary drilling device for PCB plate making.

[0019] Figure 2 FIG. is a structural diagram of the separation of the lead screw and the threaded sleeve in the secondary drilling device for PCB plate making.

[0020] Figure 3 FIG. is a structural diagram of the separation of the upper transmission pipe and the middle transmission pipe in the secondary drilling device for PCB plate making.

[0021] Figure 4 FIG. is a structural diagram of the spring in the secondary drilling device for PCB plate making.

[0022] Figure 5 FIG. is a structural diagram of the secondary drilling device for PCB plate making in another orientation.

[0023] In the figure: 1, base; 2, vertical guide rail; 3, motor; 4, lead screw; 5, threaded sleeve; 6, transverse connecting plate; 7, first pulley; 8, belt; 9, second pulley; 10, upper transmission pipe; 1001, first vertical groove; 11, middle transmission pipe; 12, lower transmission pipe; 1201, second vertical groove; 13, drill bit; 14, spring; 15, support plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] Please refer to Figures 1 - 5As an embodiment of the utility model, the secondary drilling device for PCB plate making includes a base 1, a vertical guide rail 2 is arranged above the base 1, a horizontal connecting plate 6 is slidably arranged inside the vertical guide rail 2, and a drilling mechanism is rotatably arranged on the horizontal connecting plate 6;

[0026] A lifting mechanism is also provided on the side of the vertical guide rail 2 away from the drilling mechanism. The lifting mechanism cooperates with the drilling mechanism. When the lifting mechanism descends, it drives the drilling mechanism to descend synchronously, and when the drilling mechanism descends, it also rotates synchronously. When the lifting mechanism rises, it drives the drilling mechanism to rise synchronously.

[0027] In this embodiment, a lifting mechanism and a drilling mechanism are respectively provided above the base 1, and the two cooperate with each other. When the lifting mechanism descends, the drilling mechanism will be driven to descend synchronously through the transverse connecting plate 6. At the same time, the drilling mechanism will be driven to rotate synchronously while descending through the transmission structure, thereby completing the drilling of the PCB board. When the lifting mechanism rises, the drilling mechanism is driven to rise synchronously through the transverse connecting plate 6.

[0028] As a further solution of the utility model, the lifting mechanism includes a motor 3, a screw rod 4 and a threaded sleeve 5. The motor 3 is arranged above the base 1, the screw rod 4 is connected to the output shaft of the motor 3, the threaded sleeve 5 is rotatably connected to the screw rod 4, and one end of the threaded sleeve 5 close to the vertical guide rail 2 is connected to the horizontal connecting plate 6, and the top of the vertical guide rail 2 is connected to the motor 3 through a bracket, and a bearing is provided on the base 1 to be rotatably connected to the screw rod 4.

[0029] In this embodiment, when the motor 3 is started, the output shaft of the motor 3 will drive the screw rod 4 to rotate synchronously, and the screw rod 4 will drive the threaded sleeve 5 to rotate synchronously while rotating. Since one end of the threaded sleeve 5 is connected to one end of the transverse connecting plate 6, the screw rod 4 limits the axial rotation of the threaded sleeve 5 while driving the threaded sleeve 5 to rotate, so that the threaded sleeve 5 can be lifted and lowered on the screw rod 4 in the up and down directions. Similarly, since the threaded sleeve 5 is connected to the transverse connecting plate 6, when the threaded sleeve 5 descends, the transverse connecting plate 6 will also be driven to descend synchronously.

[0030] As a further solution of the utility model, a first pulley 7 is provided on the output shaft of the motor 3, a second pulley 9 is rotatably provided above the base 1, and the first pulley 7 and the second pulley 9 are connected by a belt strip 8.

[0031] In this embodiment, the output shaft of the motor 3 drives the first pulley 7 to rotate while driving the screw rod 4 to rotate. The first pulley 7 drives the second pulley 9 to rotate through the belt strip 8.

[0032] As a further solution of the utility model, the drilling mechanism includes an upper transmission pipe 10 and a middle transmission pipe 11. The upper transmission pipe 10 is connected to the second pulley 9. A first vertical groove 1001 is formed inside the upper transmission pipe 10. A protrusion is provided on the inner wall of the middle transmission pipe 11, and the middle transmission pipe 11 and the upper transmission pipe 10 are slidably engaged through the first vertical groove 1001 and the protrusion. One end of the transverse connecting plate 6 away from the vertical guide rail 2 is internally provided with a bearing and is rotatably connected to the middle transmission pipe 11.

[0033] In this embodiment, when the second pulley 9 rotates, it will drive the upper transmission pipe 10 to rotate. A first vertical groove 1001 is formed on the inner wall of the upper transmission pipe 10, and a corresponding protrusion is provided on the inner wall of the middle transmission pipe 11, and the protrusion is arranged inside the first vertical groove 1001, so that the upper transmission pipe 10 can drive the middle transmission pipe 11 to rotate through the cooperation of the protrusion and the first vertical groove 1001. Since a bearing is provided inside one end of the transverse connecting plate 6 and is rotatably connected to the middle transmission pipe 11, when the transverse connecting plate 6 descends, it will drive the middle transmission pipe 11 to descend synchronously, so that the middle transmission pipe 11 will rise and fall synchronously while rotating.

[0034] As a further solution of the utility model, the drilling mechanism further includes a lower transmission pipe 12 and a drill bit 13. The lower transmission pipe 12 is connected to the bottom of the middle transmission pipe 11. A second vertical groove 1201 is formed on the inner wall of the lower transmission pipe 12. A corresponding protrusion is provided on the drill bit 13. The top of the drill bit 13 is arranged inside the lower transmission pipe 12 and is slidably engaged with the lower transmission pipe 12. A spring 14 abuts against the top of the drill bit 13, and the top of the spring 14 abuts against the bottom of the middle transmission pipe 11, and the spring 14 is already in a compressed state in the initial state.

[0035] In this embodiment, when the middle transmission pipe 11 descends and rotates, it will drive the lower transmission pipe 12 to descend and rotate. The inner wall of the lower transmission pipe 12 is provided with a second vertical groove 1201, which cooperates with the protrusion of the drill bit 13, so that the lower transmission pipe 12 can drive the drill bit 13 to rotate. When the drill bit 13 drills a hole in the PCB, since a spring 14 is provided between the drill bit 13 and the bottom of the middle transmission pipe 11, and the drill bit 13 continuously drills the PCB board. With the spring 14 provided, when the drill bit 13 encounters a part on the PCB board that is not easy to drill, it will squeeze the spring 14 inward, so that the drill bit 13 can retract upward, thus protecting the drill bit 13 and also protecting the PCB board from being damaged.

[0036] As a further solution of the present utility model, a support plate 15 is arranged on the side of the vertical guide rail 2, and a circular through groove is formed in the support plate 15. The upper transmission pipe 10 rotates inside the circular through groove, and a bracket and a bearing are further arranged on the support plate 15 and are rotatably connected to the top of the upper transmission pipe 10.

[0037] In this embodiment, a bracket is installed on the support plate 15, a bearing is installed on the top of the bracket, and the top of the upper transmission pipe 10 is installed inside the inner ring of the bearing. By arranging the bracket and the bearing, the second pulley 9 and the upper transmission pipe 10 operate more stably.

[0038] The above embodiments are exemplary rather than restrictive. Therefore, without departing from the spirit or basic features of the present utility model, all technical solutions that can implement the present utility model in other specific forms are included in the present utility model.

Claims

1. A secondary drilling device for PCB manufacturing, characterized in that, The secondary drilling device for PCB plate making comprises a base (1), a vertical guide rail (2) is arranged above the base (1), a transverse connecting plate (6) is slidably arranged inside the vertical guide rail (2), and a drilling mechanism is rotatably arranged on the transverse connecting plate (6); A lifting mechanism is also provided on the side of the vertical guide rail (2) away from the drilling mechanism. The lifting mechanism cooperates with the drilling mechanism. When the lifting mechanism descends, it drives the drilling mechanism to descend synchronously. When the drilling mechanism descends, it also rotates synchronously. When the lifting mechanism rises, it drives the drilling mechanism to rise synchronously.

2. The secondary drilling device for PCB manufacturing according to claim 1, wherein The lifting mechanism comprises a motor (3), a screw rod (4) and a threaded sleeve (5); the motor (3) is arranged above the base (1); the screw rod (4) is connected to the output shaft of the motor (3); the threaded sleeve (5) is rotatably connected to the screw rod (4); one end of the threaded sleeve (5) close to the vertical guide rail (2) is connected to the transverse connecting plate (6); the top of the vertical guide rail (2) is connected to the motor (3) through a bracket; and a bearing is arranged on the base (1) and is rotatably connected to the screw rod (4).

3. The secondary drilling device for PCB manufacturing according to claim 2, characterized in that, A first belt pulley (7) is arranged on the output shaft of the motor (3), a second belt pulley (9) is rotatably arranged above the base (1), and the first belt pulley (7) and the second belt pulley (9) are connected via a belt strip (8).

4. The secondary drilling device for PCB manufacturing according to claim 3, characterized in that, The drilling mechanism comprises an upper transmission tube (10) and a middle transmission tube (11), wherein the upper transmission tube (10) is connected to the second pulley (9), a first vertical groove (1001) is provided inside the upper transmission tube (10), a protrusion is provided on the inner wall of the middle transmission tube (11), and the middle transmission tube (11) and the upper transmission tube (10) are slidably matched with the protrusion through the first vertical groove (1001), and a bearing is provided inside the end of the transverse connecting plate (6) away from the vertical guide rail (2) and is rotatably connected to the middle transmission tube (11).

5. The secondary drilling device for PCB plate making according to claim 4, wherein, The drilling mechanism further comprises a lower transmission tube (12) and a drill bit (13); the lower transmission tube (12) is connected to the bottom of the middle transmission tube (11); a second vertical groove (1201) is provided on the inner wall of the lower transmission tube (12); a corresponding protrusion is provided on the drill bit (13); the top of the drill bit (13) is arranged inside the lower transmission tube (12) and is slidably matched with the lower transmission tube (12).

6. The secondary drilling device for PCB manufacturing according to claim 5, characterized in that, The top of the drill bit (13) is in contact with a spring (14), and the top of the spring (14) is in contact with the bottom of the middle transmission tube (11), and the spring (14) is already in a compressed state in an initial state.

7. The secondary drilling device for PCB plate making according to claim 4, wherein A support plate (15) is provided on the side of the vertical guide rail (2), and a circular through groove is provided on the support plate (15), the upper transmission tube (10) rotates inside the circular through groove, and a bracket and a bearing are also provided on the support plate (15) to be rotatably connected with the top of the upper transmission tube (10).