PCB multilayer circuit board drilling device and method

Abstract

This invention relates to the field of integrated circuit manufacturing, and more particularly to a drilling device and method for multilayer PCB circuit boards. The device includes a worktable with a receiving groove at its upper front. A third servo slide is fixedly mounted on the bottom surface of the receiving groove. A first servo slide is fixedly mounted on the upper surface of the third servo slide, and the third servo slide and the first servo slide are offset by 90 degrees. Multiple limiting frames are linearly arrayed and elastically mounted on the upper surface of the first servo slide, and circuit boards are placed inside each of the multiple limiting frames. A drilling component is provided at the upper rear of the worktable, and a fixing seat is fixedly mounted at the upper end of the worktable, located at the receiving groove. This invention improves the overall efficiency of integrated circuit manufacturing while ensuring the accuracy of the manufactured integrated circuits.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit manufacturing, and in particular to a drilling apparatus and method for multilayer PCB circuit boards. Background Technology

[0002] A multilayer PCB is a high-density printed circuit board made by laminating multiple layers of conductive lines and insulating materials. Multilayer PCBs are the core carrier for realizing the electrical connection between chips and components, and they occupy an important position in integrated circuit manufacturing.

[0003] Drilling is a necessary step in the manufacturing process of multilayer PCBs to achieve interlayer conductivity and circuit connection. However, the drilling equipment used in current drilling processes can only process one multilayer PCB at a time, resulting in low processing efficiency and severely restricting the overall efficiency of integrated circuit manufacturing. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a drilling device and method for multilayer PCB circuit boards.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a PCB multilayer circuit board drilling device, comprising a worktable, a receiving groove provided at the upper front of the worktable, a third servo slide fixedly installed on the bottom surface of the receiving groove, a first servo slide fixedly installed on the upper surface of the third servo slide, the third servo slide and the first servo slide being offset at a 90-degree angle, multiple limiting brackets linearly arrayed elastically installed on the upper surface of the first servo slide, each of the multiple limiting brackets containing a circuit board, a drilling component provided at the upper rear of the worktable, a fixed seat fixedly installed at the upper end of the worktable at the receiving groove, multiple first guide blocks linearly arrayed elastically installed on the upper end of the fixed seat, a fixed bracket fixedly installed on the side of the fixed seat, a movable bracket fixedly installed on one side of each of the multiple first guide blocks, an anti-sway component provided on the movable bracket, and a T-shaped frame pressed onto the upper end of the first guide block at the top, the T-shaped frame being connected to the drilling component.

[0006] Preferably, a first connecting rod is rotatably installed on the other side of each of the multiple first guide blocks except those located at the top, and a second connecting rod is rotatably installed on the rear end of each of the multiple limiting brackets except those located at the bottom, with the end of the second connecting rod rotatably connected to the first connecting rod.

[0007] Preferably, two guide rods are symmetrically fixedly installed on the upper end of the fixed base. The guide block is slidably installed on the outer surface of the guide rod. Push springs are fixedly installed between the opposite surfaces of the multiple guide blocks and between the bottom guide block and the opposite surface of the fixed base. The guide rod passes through the inside of the push spring. Second positioning ears extend from the upper ends of the multiple guide blocks except the top one and the upper end of the fixed base. The second positioning ears are located between the two guide rods.

[0008] Preferably, two uprights are symmetrically fixedly installed on the upper part of the first servo slide. Two second guide rods are symmetrically fixedly installed on the upper part of the uprights. Multiple second guide blocks are slidably installed on the outer surface of the second guide rods. The side of the limiting bracket located at the bottom is fixed to the upright. The side of the multiple limiting brackets other than those located at the bottom is fixed to multiple second guide blocks respectively. Push frame springs are fixedly installed between the opposite surfaces of the multiple second guide blocks and between the opposite surface of the second guide block located at the bottom and the upright. The second guide rod passes through the inside of the push frame spring. A first positioning ear extends from the upper end of the multiple second guide blocks other than those located at the top and from the upper end of the upright. The first positioning ear is located between the two second guide rods.

[0009] Preferably, the drilling component includes a frame fixedly installed at the upper rear of the worktable, a second servo slide fixedly installed at the upper end of the frame, a lifting frame fixedly installed at the front end of the second servo slide, a motor fixedly installed at the front end of the lifting frame, a fine drill bit fixedly installed at the output end of the motor, and through holes opened through the ends of the movable bracket and the fixed bracket, with the through holes aligned with the fine drill bit.

[0010] Preferably, two support columns are symmetrically fixedly installed on the upper end of the T-shaped frame, the lifting frame is slidably installed on the outer surface of the support columns, and an adaptive spring is wound around the outer side of the support columns. The two ends of the adaptive spring are respectively fixed to the lifting frame and the T-shaped frame.

[0011] Preferably, the anti-sway component includes a control frame slidably mounted on the lower end of the movable bracket. Slides extend from both sides of the movable bracket. Guide prisms are slidably mounted at the ends of both slides. Protective sleeves are fixedly mounted on the opposite faces of the two guide prisms. Pushing frames are rotatably mounted between the opposite ends of the two guide prisms and the front end of the control frame. A top column is rotatably mounted inside the protective sleeve. A control wheel is mounted on the rear end of the control frame. A control plate is positioned above the control wheel. The upper end of the control plate is fixed to the lifting frame. An inclined push surface is provided at the lower end of the control plate.

[0012] Preferably, a convex cap post is fixedly installed at the rear end of the movable bracket, a sliding sleeve is slidably installed on the outer surface of the convex cap post, the sliding sleeve is fixed to the control frame, and a return spring is wound around the outer side of the convex cap post, with the two ends of the return spring being fixed to the sliding sleeve and the end of the convex cap post, respectively.

[0013] A method for using a drilling device for multilayer PCB circuit boards is also provided, including the following steps:

[0014] S1: Place multiple circuit boards into multiple limit brackets respectively. Then, the second servo slide moves the lifting frame down, which in turn moves the T-shaped frame down to press the first guide block, so that the multiple circuit boards are gathered together and clamped between multiple movable brackets and fixed brackets.

[0015] S2: Then the second servo slide continues to drive the lifting frame to move down, allowing the fine drill bit to contact multiple circuit boards for processing. At the same time, the inclined push surface on the control board will push the control wheel to move backward, so that the top post on the protective sleeve will press against the outside of the fine drill bit to prevent the fine drill bit from swinging.

[0016] S3: Next, the circuit board is moved by the No. 3 servo slide and the No. 1 servo slide to process different positions on the circuit board.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Place multiple circuit boards into multiple limiting brackets, then use the downward-moving T-shaped frame to press down on the first guide block, causing multiple first guide blocks to gather together, which in turn drives multiple movable brackets and limiting brackets to gather together, thereby bringing multiple circuit boards together and clamping them between multiple movable brackets and fixed brackets. Then, drilling tools can be used to process multiple circuit boards simultaneously, thereby improving processing efficiency and thus improving the overall efficiency of integrated circuit manufacturing.

[0019] 2. When the second servo slide moves the fine drill bit downwards for processing, the control board moves downwards synchronously and contacts multiple control wheels in sequence. At this time, the inclined push surface on the control board pushes the control wheels backwards, which in turn moves the control frame backwards to drive the push frame to move. This causes the two protective sleeves to close, allowing the top column to press tightly against the outside of the fine drill bit. This restricts the fine drill bit, preventing it from wobbling during rotation. This avoids abnormal hole diameters on the circuit board caused by the wobbling of the fine drill bit, thus ensuring the precision of the integrated circuit after manufacturing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the first servo slide of the present invention;

[0022] Figure 3 This is an exploded view of the circuit board and the limiting support frame of the present invention;

[0023] Figure 4 This is a schematic diagram of the lifting frame of the present invention;

[0024] Figure 5 This is a schematic diagram of the circuit board of the present invention;

[0025] Figure 6 This is a schematic diagram of the circuit board of the present invention from another perspective;

[0026] Figure 7 For the present invention Figure 1 Enlarged view of A in the middle;

[0027] Figure 8 For the present invention Figure 5 Enlarged view of B in the middle;

[0028] Figure 9 This is a schematic diagram of the movable bracket of the present invention;

[0029] Figure 10 This is a schematic diagram of the pusher frame of the present invention;

[0030] Figure 11 This is a schematic diagram of the protective sleeve of the present invention.

[0031] In the diagram: 1. Worktable; 2. Servo slide number one; 3. Receiving slot; 4. Frame; 5. Circuit board; 6. T-shaped frame; 7. Motor; 8. Lifting frame; 9. Servo slide number two; 10. Servo slide number three; 11. Stand; 12. Fixed base; 13. Limiting bracket; 14. Fixed bracket; 15. Guide rod number one; 16. Control wheel; 17. Control frame; 18. Guide block number one; 19. Movable bracket; 20. Guide rod number two; 21. 21. Top column; 22. Protective sleeve; 23. Guide prism; 24. Push frame; 25. Slide; 26. Through hole; 27. Push frame spring; 28. No. 2 guide block; 29. ​​No. 1 positioning ear; 30. No. 1 connecting rod; 31. No. 2 connecting rod; 32. Push frame spring; 33. No. 2 positioning ear; 34. Convex cap column; 35. Return spring; 36. Slide sleeve; 37. Fine drill bit; 38. Frame column; 39. Adaptive spring; 40. Control panel; 41. Inclined push surface. Detailed Implementation

[0032] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0033] like Figures 1-11The PCB multilayer circuit board drilling device shown includes a worktable 1. A receiving groove 3 is formed at the upper front of the worktable 1, serving a receiving function. A third servo slide 10 is fixedly installed on the bottom surface of the receiving groove 3. A first servo slide 2 is fixedly installed on the upper part of the slide of the third servo slide 10. The third servo slide 10 and the first servo slide 2 are offset at a 90-degree angle. The third servo slide 10 can adjust the front-back position of the circuit board 5, and the first servo slide 2 can adjust the left-right position of the circuit board 5, facilitating processing at different positions on the circuit board 5 to meet manufacturing requirements. Multiple limiting brackets 13 are linearly arrayed and elastically installed on the upper part of the slide of the first servo slide 2. Circuit boards 5 are placed inside each of the multiple limiting brackets 13, which serve to support and limit the circuit board 5. A drilling component is provided at the upper rear of the worktable 1. A fixing seat 12 is fixedly installed at the upper end of the worktable 1 at the receiving groove 3. The upper end of the fixing seat 12 is linearly arrayed. The array is flexibly mounted with multiple first guide blocks 18, which serve as guides. A fixed bracket 14 is fixedly mounted on the side of the fixed base 12. Movable brackets 19 are fixedly mounted on one side of each of the multiple first guide blocks 18. The fixed brackets 14 and movable brackets 19 can support and clamp the processing area of ​​the circuit board 5 to facilitate processing. Anti-sway components are provided on the movable brackets 19. A T-shaped frame 6 is pressed onto the upper end of the top first guide block 18, and the T-shaped frame 6 is connected to the drilling component. Multiple circuit boards 5 are placed in multiple limiting brackets 13 respectively. Then, the downward-moving T-shaped frame 6 presses down on the first guide block 18, causing multiple first guide blocks 18 to gather together, which in turn drives multiple movable brackets 19 and limiting brackets 13 to gather together, thereby allowing multiple circuit boards 5 to gather and be clamped between multiple movable brackets 19 and fixed brackets 14. Then, multiple circuit boards 5 can be processed simultaneously using drilling tools, thereby improving processing efficiency and thus improving the overall efficiency of integrated circuit manufacturing.

[0034] A first connecting rod 30 is rotatably installed on the other side of each of the multiple first guide blocks 18 except those located at the top. A second connecting rod 31 is rotatably installed on the rear end of each of the multiple limiting brackets 13 except those located at the bottom. The cooperation between the first connecting rod 30 and the second connecting rod 31 allows the first guide block 18 to drive the limiting bracket 13 to move synchronously and converge, and ensures that the position of the circuit board 5 will not be obstructed when adjusting it later. The end of the second connecting rod 31 is rotatably connected to the first connecting rod 30.

[0035] Two guide rods 15 are symmetrically fixedly mounted on the upper end of the fixed base 12. A guide block 18 is slidably mounted on the outer surface of the guide rod 15. The guide rod 15 serves to allow the guide block 18 to slide. Push springs 32 are fixedly mounted between the opposing surfaces of the multiple guide blocks 18 and between the bottom guide block 18 and the opposing surface of the fixed base 12. The push springs 32 can disperse the gathered guide blocks 18, thereby allowing the movable bracket 19 to detach from the circuit board 5. The upper end is for easy placement and removal of the circuit board 5. The first guide rod 15 passes through the inside of the push frame spring 32. The upper ends of the multiple first guide blocks 18 (excluding the top) and the upper end of the fixed seat 12 are all extended with second positioning ears 33. The second positioning ears 33 are located between the two first guide rods 15. The second positioning ears 33 can position the distance between the multiple first guide blocks 18 when they are brought together, so as to avoid the movable bracket 19 from excessively clamping the circuit board 5 and causing damage to the circuit board 5.

[0036] Two uprights 11 are symmetrically fixedly installed on the upper part of the servo slide 2. Two guide rods 20 are symmetrically fixedly installed on the upper part of the uprights 11. The uprights 11 serve to support the guide rods 20. Multiple guide blocks 28 are slidably installed on the outer surface of the guide rods 20. The side of the bottom limiting bracket 13 is fixed to the uprights 11. The guide rods 20 and guide blocks 28 serve to guide the limiting bracket 13. The sides of the multiple limiting brackets 13, except those at the bottom, are fixed to the multiple guide blocks 28. The opposing surfaces of the multiple guide blocks 28 and the two guide blocks at the bottom are fixed to each other. Push frame springs 27 are fixedly installed between the opposite surfaces of the guide blocks 28 and the support 11. The push frame springs 27 can disperse the converging limit support frames 13, so that there is enough space between the multiple circuit boards 5 for easy placement and removal. The second guide rod 20 passes through the inside of the push frame spring 27. Except for the top of the multiple second guide blocks 28, the upper end of the support 11 and the upper end of the second guide block 28 each extend a first positioning ear 29. The first positioning ear 29 can position the distance between the multiple second guide blocks 28 when they are converging, so as to avoid excessive compression of the circuit board 5. The first positioning ear 29 is located between the two second guide rods 20.

[0037] The drilling component includes a bracket 4 fixedly installed at the upper rear of the worktable 1. A second servo slide 9 is fixedly installed at the upper end of the bracket 4. The bracket 4 serves to support the second servo slide 9. A lifting frame 8 is fixedly installed at the front end of the slide of the second servo slide 9. The lifting frame 8 serves as a connection. A motor 7 is fixedly installed at the front end of the lifting frame 8. A fine drill bit 37 is fixedly installed at the output end of the motor 7. The motor 7 drives the fine drill bit 37 to rotate. Through holes 26 are opened through the ends of the movable bracket 19 and the fixed bracket 14. The through holes 26 are aligned with the fine drill bit 37 and allow the fine drill bit 37 to pass through, so as to process multiple circuit boards 5 at the same time.

[0038] Two support columns 38 are symmetrically fixedly installed on the upper end of the T-shaped frame 6. The lifting frame 8 is slidably installed on the outer surface of the support columns 38. The support columns 38 serve to guide the T-shaped frame 6. An adaptation spring 39 is wound around the outside of the support columns 38. The two ends of the adaptation spring 39 are fixed to the lifting frame 8 and the T-shaped frame 6 respectively. When the T-shaped frame 6 can no longer move down, the second servo slide 9 drives the lifting frame 8 to continue to move down, which will deform the adaptation spring 39, so that the lifting frame 8 can continue to move down without obstruction.

[0039] The anti-sway component includes a control frame 17 slidably mounted on the lower end of a movable bracket 19. Slides 25 extend from both sides of the movable bracket 19, and guide prisms 23 are slidably mounted on the ends of both slides 25. Protective sleeves 22 are fixedly mounted on the opposite faces of the two guide prisms 23. The cooperation between the slides 25 and the guide prisms 23 guides the protective sleeves 22. Pushers 24 are rotatably mounted between the opposite ends of the two guide prisms 23 and the front end of the control frame 17. A top post 21 is rotatably mounted inside the protective sleeve 22. The rotational design of the top post 21 allows it to rotate synchronously with the fine drill bit 37 when it is pressed against the outside of the fine drill bit 37, thus reducing wear. A control wheel 16 is mounted on the rear end of the control frame 17, and a control plate is positioned above the control wheel 16. 40. The upper end of the control board 40 is fixed to the lifting frame 8. The lower end of the control board 40 is provided with a sloping push surface 41. When the second servo slide 9 drives the fine drill bit 37 to move down for processing, the control board 40 will move down synchronously and contact multiple control wheels 16 in sequence. At this time, the sloping push surface 41 on the control board 40 will push the control wheels 16 to move backward, thereby driving the control frame 17 to move backward, so as to drive the push frame 24 to move, thereby driving the two protective sleeves 22 to close, so that the top column 21 can be pressed against the outside of the fine drill bit 37, thereby restricting the fine drill bit 37, so that the slender fine drill bit 37 will not swing during the rotation operation, thereby avoiding the phenomenon of abnormal hole diameter on the circuit board 5 due to the swing of the fine drill bit 37, thus ensuring the accuracy after integrated circuit manufacturing.

[0040] A convex cap post 34 is fixedly installed at the rear end of the movable bracket 19. A sliding sleeve 36 is slidably installed on the outer surface of the convex cap post 34. The convex cap post 34 serves to allow the sliding sleeve 36 to slide. The sliding sleeve 36 is fixed to the control frame 17. A return spring 35 is wound around the outside of the convex cap post 34. The two ends of the return spring 35 are fixed to the ends of the sliding sleeve 36 and the convex cap post 34, respectively. The return spring 35 can reset the control frame 17, thereby separating the two protective sleeves 22 and causing the top post 21 to disengage from the outside of the fine drill bit 37.

[0041] A method for using a drilling device for multilayer PCB circuit boards is also provided, including the following steps:

[0042] S1: Place multiple circuit boards 5 into multiple limiting brackets 13 respectively. Then, the second servo slide 9 drives the lifting frame 8 to move down, which in turn drives the T-shaped frame 6 to move down and press the first guide block 18, so that multiple circuit boards 5 are gathered together and clamped between multiple movable brackets 19 and fixed brackets 14.

[0043] S2: Then the second servo slide 9 continues to drive the lifting frame 8 to move down, so that the fine drill bit 37 contacts multiple circuit boards 5 for processing. At the same time, the inclined push surface 41 on the control board 40 will push the control wheel 16 to move backward, so that the top post 21 on the protective sleeve 22 will press against the outside of the fine drill bit 37 to prevent the fine drill bit 37 from swinging.

[0044] S3: Then, the circuit board 5 is moved by the third servo slide 10 and the first servo slide 2 to process different positions on the circuit board 5.

[0045] During manufacturing, multiple circuit boards 5 are placed in multiple limiting brackets 13 for positioning. The lower ends of the circuit boards 5 are supported by movable brackets 19 and fixed brackets 14. Then, the second servo slide 9 drives the lifting frame 8 downwards, causing the T-shaped frame 6 to press down on the first guide block 18. During this process, the top first guide block 18 moves down and presses against the second positioning ear 33 on the lower first guide block 18, then pushes the lower first guide block 18 downwards synchronously. This process continues, allowing multiple first guide blocks 18 to converge. The converged first guide blocks 18 then pass through... Linkage 1 (30) and Linkage 2 (31) move multiple limiting brackets (13) downwards, allowing multiple circuit boards (5) to converge. Simultaneously, the converged guide block (18) moves multiple movable brackets (19) downwards, clamping the circuit boards (5) between adjacent movable brackets (19). The circuit board (5) at the bottom is clamped between the movable bracket (19) and the fixed bracket (14), thus bringing the multiple circuit boards (5) together and clamping them. At this point, the two ends of the descending T-shaped frame (6) press against the base (4), preventing the T-shaped frame (6) from moving further downwards. Subsequently, the second servo slide (9) moves the lifting frame (8) further downwards. The spring 39 adapts to deformation, allowing the lifting frame 8 to continue descending without obstruction. This downward movement of the lifting frame 8 drives the fine drill bit 37 downward, allowing it to pass through the through hole 26 on the movable bracket 19. Simultaneously, multiple circuit boards 5 are processed. During this process, the descending lifting frame 8 also drives the control board 40 downward synchronously, allowing it to contact multiple control wheels 16 in sequence. At this point, the inclined push surface 41 on the control board 40 pushes the control wheels 16 backward, thereby driving the control frame 17 backward, which in turn drives the push frame 24 to move, thus moving the two protective sleeves 2. 2. Closing the top post 21 allows it to press firmly against the outside of the fine drill bit 37, thus restricting the fine drill bit 37 and preventing it from wobbling during rotation. This avoids abnormal hole diameters on the circuit board 5 caused by the wobbling of the fine drill bit 37, ensuring the precision of the integrated circuit manufacturing. After the hole is processed, the second servo slide 9 will drive the lifting frame 8 to move up and reset. Then, the third servo slide 10 and the first servo slide 2 control the movement of the circuit board 5 to process different positions on the circuit board 5, thereby meeting the manufacturing requirements.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A drilling device for multilayer PCB circuit boards, comprising a worktable (1), characterized in that: The upper front of the worktable (1) is provided with a receiving groove (3). A third servo slide (10) is fixedly installed on the bottom surface of the receiving groove (3). A first servo slide (2) is fixedly installed on the upper part of the slide of the third servo slide (10). The third servo slide (10) and the first servo slide (2) are offset at a 90-degree angle. Multiple limiting brackets (13) are linearly arrayed and elastically installed on the upper part of the slide of the first servo slide (2). A circuit board (5) is placed inside each of the multiple limiting brackets (13). The upper rear of the worktable (1) The workbench (1) is equipped with a drilling component. A fixed seat (12) is fixedly installed at the upper end of the workbench (1) at the receiving groove (3). Multiple first guide blocks (18) are linearly arrayed and elastically installed at the upper end of the fixed seat (12). A fixed bracket (14) is fixedly installed on the side of the fixed seat (12). A movable bracket (19) is fixedly installed on one side of each of the multiple first guide blocks (18). An anti-sway component is provided on the movable bracket (19). A T-shaped frame (6) is pressed onto the upper end of the first guide block (18) located at the top. The T-shaped frame (6) is connected to the drilling component.

2. The PCB multilayer circuit board drilling device according to claim 1, characterized in that: A first connecting rod (30) is rotatably installed on the other side of each of the multiple first guide blocks (18) except those located at the top, and a second connecting rod (31) is rotatably installed on the rear end of each of the multiple limiting brackets (13) except those located at the bottom, with the end of the second connecting rod (31) rotatably connected to the first connecting rod (30).

3. The PCB multilayer circuit board drilling device according to claim 2, characterized in that: Two first guide rods (15) are symmetrically fixedly installed on the upper end of the fixed base (12). The first guide block (18) is slidably installed on the outer surface of the first guide rod (15). Push frame springs (32) are fixedly installed between the opposite surfaces of the multiple first guide blocks (18) and between the first guide block (18) at the bottom and the opposite surface of the fixed base (12). The first guide rod (15) passes through the inside of the push frame spring (32). Except for the upper end of the multiple first guide blocks (18) located at the top, the upper end of the fixed base (12) is extended with second positioning ears (33). The second positioning ears (33) are located between the two first guide rods (15).

4. The PCB multilayer circuit board drilling device according to claim 3, characterized in that: The first servo slide (2) has two uprights (11) symmetrically fixedly installed on its upper end. Two second guide rods (20) are symmetrically fixedly installed on the upper end of the uprights (11). Multiple second guide blocks (28) are slidably installed on the outer surface of the second guide rods (20). The side of the limiting bracket (13) located at the bottom is fixed to the uprights (11). The sides of the multiple limiting brackets (13) located at the bottom are respectively fixed to the multiple second guide blocks (28). Push frame springs (27) are fixedly installed between the opposing surfaces of the multiple second guide blocks (28) and between the opposing surfaces of the second guide block (28) at the bottom and the stand (11). The second guide rod (20) passes through the inside of the push frame spring (27). Except for the top of the multiple second guide blocks (28) and the top of the stand (11), a first positioning ear (29) extends. The first positioning ear (29) is located between the two second guide rods (20).

5. The PCB multilayer circuit board drilling device according to claim 4, characterized in that: The drilling component includes a frame (4) fixedly installed at the upper rear of the workbench (1). A second servo slide (9) is fixedly installed at the upper end of the frame (4). A lifting frame (8) is fixedly installed at the front end of the second servo slide (9). A motor (7) is fixedly installed at the front end of the lifting frame (8). A fine drill bit (37) is fixedly installed at the output end of the motor (7). A through hole (26) is opened through both the end of the movable bracket (19) and the end of the fixed bracket (14). The through hole (26) is aligned with the fine drill bit (37).

6. The PCB multilayer circuit board drilling device according to claim 5, characterized in that: Two support columns (38) are symmetrically fixedly installed on the upper end of the T-shaped frame (6). The lifting frame (8) is slidably installed on the outer surface of the support column (38). An adaptation spring (39) is wound around the outside of the support column (38). The two ends of the adaptation spring (39) are fixed to the lifting frame (8) and the T-shaped frame (6) respectively.

7. A drilling device for multilayer PCB circuit boards according to claim 6, characterized in that: The anti-sway component includes a control frame (17) slidably mounted on the lower end of the movable bracket (19). Both sides of the movable bracket (19) have extended slides (25). The ends of the two slides (25) are slidably mounted with guide prisms (23). The opposite faces of the two guide prisms (23) are fixedly mounted with protective sleeves (22). The opposite ends of the two guide prisms (23) are rotatably mounted with pushers (24) between the front end of the control frame (17). The inside of the protective sleeves (22) is rotatably mounted with a top column (21). The rear end of the control frame (17) is mounted with a control wheel (16). A control plate (40) is provided above the control wheel (16). The upper end of the control plate (40) is fixed to the lifting frame (8). The lower end of the control plate (40) is provided with an inclined push surface (41).

8. A drilling device for multilayer PCB circuit boards according to claim 7, characterized in that: The rear end of the movable bracket (19) is fixedly installed with a convex cap post (34), and a sliding sleeve (36) is slidably installed on the outer surface of the convex cap post (34). The sliding sleeve (36) is fixed to the control frame (17). A return spring (35) is wound around the outside of the convex cap post (34), and the two ends of the return spring (35) are fixed to the ends of the sliding sleeve (36) and the convex cap post (34), respectively.

9. A method of using a PCB multilayer circuit board drilling device, applied to the PCB multilayer circuit board drilling device of claim 8, characterized in that, Includes the following steps: S1: Place multiple circuit boards (5) into multiple limit brackets (13), then the second servo slide (9) drives the lifting frame (8) to move down, and then drives the T-shaped frame (6) to move down to press the first guide block (18), so that multiple circuit boards (5) are gathered together and clamped between multiple movable brackets (19) and fixed brackets (14); S2: Then the second servo slide (9) continues to drive the lifting frame (8) to move down, so that the fine drill bit (37) and multiple circuit boards (5) come into contact for processing. At the same time, the inclined push surface (41) on the control board (40) will push the control wheel (16) to move backward, so that the top column (21) on the protective sleeve (22) presses against the outside of the fine drill bit (37) to prevent the fine drill bit (37) from swinging. S3: Then, the circuit board (5) is moved by the third servo slide (10) and the first servo slide (2) to process different positions on the circuit board (5).

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