Drilling device for PCB machining

Abstract

The invention relates to the technical field of PCB (printed circuit board) processing, and discloses a drilling device for PCB processing, which comprises a worktable, a support frame and a U-shaped frame are mounted at the top of the worktable, an air cylinder is mounted at the top of the support frame, the output end of the air cylinder is fixedly connected with a drilling assembly, a communicating groove is formed in the bottom of the U-shaped frame, and a cleaning assembly is mounted in the communicating groove. The top of the workbench is fixedly connected with two T-shaped guide rails, the tops of the T-shaped guide rails are slidably connected with a limiting plate, the interior of the limiting plate is in threaded connection with a lead screw, and one end of the lead screw is fixedly connected with a motor. According to the PCB clamping device, the limiting frame is arranged, a PCB is firstly placed in an adjusting groove in the limiting frame, and two transmission threaded rods are rotated at the same time, so that the two transmission threaded rods drive two abutting boxes to move towards the surface of the PCB through two moving cylinders, the two abutting boxes abut against and clamp the PCB, the device can clamp the PCBs of different sizes, and the PCB clamping efficiency is improved. And the application range of the device is widened.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board processing, and in particular to a drilling device for PCB board processing. Background Art

[0002] PCB circuit board is a printed circuit board, which has conductive paths printed on its surface and can be used to assemble electronic components. It is an indispensable and important component of modern electronic equipment. When soldering electronic components on the PCB circuit board, positioning holes need to be opened on its surface first, and then the electronic components can be soldered and fixed in the positioning holes.

[0003] The patent with announcement number CN221818892U discloses a drilling device for PCB circuit board processing. By setting a fixing mechanism, the circuit board is placed between the connecting seat and the clamp, and between the fixing plate and the clamping plate, and the electric telescopic rod is controlled to push the connecting seat to slide on the sliding rod. At this time, with the cooperation of the limit plate, the circuit board is neatly arranged in the vertical direction. Then the threaded rod is rotated to push the clamp and the clamping plate to slide downward on the fixing rod, so that the two ends of the circuit board are clamped and fixed. After clamping and fixing, the circuit board will not be deformed by force. At the same time, it can realize the function of fixing multiple circuit boards, and can drill multiple circuit boards at the same time, improve the efficiency of drilling processing, and solve the problem of low processing efficiency of existing drilling devices and easy deformation of circuit boards after clamping and fixing.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when the device is working, the PCB board is first fixed, and then the position of the PCB board is changed through two connecting seats to achieve punching of holes in different positions of different PCBs. However, impurities are generated during the punching process, and the impurities on the surface of the PCB board need to be cleaned to ensure the discharge effect of the PCB board. At the same time, after the device completes the punching of holes in a line, it is necessary to first release the clamping of the PCB board, and then clamp the PCB board after changing the position of the PCB board, which is very troublesome and affects the working efficiency of the device. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a drilling device for PCB board processing.

[0006] The present invention is implemented by the following technical scheme: a drilling device for PCB board processing, comprising a workbench, a support frame and a U-shaped frame are installed on the top of the workbench, a cylinder is installed on the top of the support frame, the output end of the cylinder is fixedly connected to a punching assembly, a connecting groove is opened at the bottom of the U-shaped frame, a cleaning assembly is installed inside the connecting groove, two T-shaped guide rails are fixedly connected to the top of the workbench, the top of the T-shaped guide rails is slidably connected to a limit plate, the internal thread of the limit plate is connected to a lead screw, one end of the lead screw is fixedly connected to a motor, and the top of the limit plate is fixedly connected to the limit assembly.

[0007] The limit assembly includes a limit frame, a long rod is installed inside the limit frame, two transmission gears are sleeved on the surface of the long rod, the surface of the transmission gear is meshed with a connecting gear, a threaded rod is passed through the axis of the connecting gear, the outer side of the threaded rod is threadedly connected to a threaded barrel, and one end of the threaded barrel is fixedly connected to an abutment assembly.

[0008] The abutment assembly includes a connecting box, the connecting box is slidably connected to the abutment box inside, a transmission threaded rod is rotatably connected to one side of the inner wall of the connecting box, a small gear is sleeved on the outer side of the transmission threaded rod, a moving tooth plate is threadedly connected to the surface of the small gear, an adjusting cylinder is fixedly connected to one side of the moving tooth plate, the adjusting cylinder is threadedly connected to the adjusting threaded rod inside, the adjusting threaded rod is rotatably connected to one side of the connecting box, the transmission threaded rod is threadedly connected to the moving cylinder outside, and one end of the moving cylinder is fixedly connected to one side of the abutment box.

[0009] As a further improvement of the above scheme, the punching assembly includes a T-shaped movable plate, a vertical tooth plate is fixedly connected to the left side of the top of the T-shaped movable plate at equal intervals, the top of the T-shaped movable plate is fixedly connected to the bottom end of the cylinder, the bottom of the T-shaped movable plate is fixedly connected to a punching motor, the output end of the punching motor is fixedly connected to a drill bit, two spring rods are fixedly connected to both sides of the bottom of the T-shaped movable plate, and the bottom end of the spring rod is fixedly connected to an abutment block, which is used to abut and fix the PCB board during drilling operations.

[0010] As a further improvement of the above scheme, the cleaning assembly includes a rotating rod rotatably connected to the inner wall of the connecting groove at equal intervals, a ring is sleeved on the outer side of the rotating rod, a brush plate is fixedly connected to the bottom of the ring, a deflection gear is sleeved on the outer side of the rotating rod, a mounting groove is opened inside the U-shaped frame, the deflection gear is installed inside the mounting groove, the surface of the deflection gear is meshed with the surface of the vertical tooth plate, and the top and bottom of the U-shaped frame are evenly spaced with through holes for the vertical tooth plate to pass through, which is used to clean impurities on the surface of the PCB board.

[0011] As a further improvement of the above scheme, the internal sliding connection of the limit plate is a U-shaped plate, the U-shaped plate is fixedly connected to the top of the workbench, a mounting block is installed at the bottom of the motor, the bottom of the mounting block is fixedly connected to the right side of the U-shaped plate, the U-shaped plate is used to shield the screw rod to reduce the situation where impurities fall on the screw rod, and the mounting block ensures the normal operation of the electric motor.

[0012] As a further improvement of the above solution, bearings are installed on both sides of the inner wall of the limit frame, the threaded rod is installed inside the bearing, and one end of the back threaded rod is fixedly connected to a handwheel to ensure the normal operation of the threaded rod.

[0013] As a further improvement of the above scheme, the top and bottom of the inner wall of the connecting box are provided with sliding grooves, and the top and bottom of the abutment box are fixedly connected with card blocks, which are slidably arranged inside the sliding grooves to ensure the normal movement of the abutment box.

[0014] As a further improvement of the above solution, a linear groove is provided at the bottom of the inner wall of the connection box, and the movable tooth plate is slidably arranged inside the linear groove, thereby ensuring the normal movement of the movable tooth plate.

[0015] As a further improvement of the above scheme, an adjustment groove is opened inside the limit frame, the connecting box is slidably arranged inside the adjustment groove, a through groove for the drill bit to pass through is opened on the top of the inner wall of the adjustment groove, and a placement groove is opened on the bottom of the inner wall of the adjustment groove, thereby ensuring the normal operation of the drill bit.

[0016] As a further improvement of the above solution, a collection box is fixedly connected to the left side of the workbench, and the height of the top of the collection box is consistent with the height of the bottom of the inner wall of the adjustment groove, which is convenient for collecting impurities on the surface of the PCB.

[0017] As a further improvement of the above solution, the surface of the T-shaped guide rail is provided with threaded openings at equal intervals, and bolts are installed on the front and back of the limit plate, and the bolts are installed inside the threaded openings to facilitate limiting the limit plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention sets a limit frame, first places the PCB board in the adjustment slot in the limit frame, and rotates two transmission threaded rods at the same time, so that the two transmission threaded rods move toward the surface of the PCB board with two abutment boxes through two moving cylinders, so that the two abutment boxes abut and clamp the PCB board, so that the device can clamp PCB boards of different sizes, thereby improving the application range of the device.

[0020] 2. The present invention sets a long rod. After the PCB board is clamped, the cylinder and the motor are started to rotate the drill bit, so that the drill bit moves downward to drill a hole in the PCB board. After the hole drilling is completed, the cylinder moves the drill bit upward and rotates the long rod to rotate the long rod, thereby causing the two transmission gears to rotate with the two connecting gears, thereby causing the two threaded rods to rotate with the two threaded barrels. The thread directions of the two threaded rods are consistent, so that when the threaded rods rotate, the movement directions of the two threaded barrels are consistent, thereby causing the two connecting boxes to control the PCB board to move in the adjusting groove through the two abutment boxes, so that the drill bit can drill holes in the PCB board at different positions, thereby facilitating the device to drill holes in different positions of the PCB board and improving the application range of the device.

[0021] 3. The present invention sets a T-shaped guide rail. After completing the punching work at the same longitudinal position, the bolts on both sides are rotated to push the limit plate to move in the horizontal direction, so that the limit frame moves. After moving to the next work location, the bolts are rotated again to connect the bolts and the T-shaped guide rail again for limiting. After the adjustment is completed, the punching work in the longitudinal direction is continued. When the device is performing the punching work, it is not necessary to continuously perform the cumbersome operation of clamping and releasing the PCB board, thereby improving the working efficiency of the device.

[0022] 4. The present invention sets abutment blocks. When the cylinder brings the T-shaped movable plate down, the abutment blocks on both sides will first abut against the surface of the PCB board, and the drill bit continues to descend until the drilling operation is completed. During this process, the spring rod continuously squeezes the abutment blocks, so that the abutment blocks abut and fix the surface of the PCB board, so that when the device is drilling, the PCB board can be abutted more stably, thereby improving the stability of the device during drilling.

[0023] 5. The present invention provides a brush plate. During the drilling process of the PCB board, the limit frame moves the PCB board to the left, and the limit plate moves the PCB board to the left. After moving to the leftmost side, the limit plate is reset, and the PCB board is re-limited and fixed. Before re-fixing, the cylinder is started first to move the drill bit to the initial position. After the fixation is completed, the cylinder is restarted to carry out drilling with the drill bit. During the movement of the cylinder to the initial position and the punching position, the T-shaped moving plate moves up and down with multiple vertical tooth plates, so that the vertical tooth plates rotate with the deflection gear, so that the rotating rod deflects back and forth with the ring, so that the brush plate sweeps impurities on the surface of the PCB board to the front and back of the PCB board, so that the impurities fall into the collection box for collection, which is convenient for subsequent cleaning of the PCB board and improves the cleaning efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the abutment block, the rotating rod and the collar of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the T-shaped guide rail, the limit plate and the lead screw of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the long rod, the transmission gear and the connecting gear of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the threaded barrel, the connecting box and the abutting box of the present invention.

[0029] Description of main symbols:

[0030] 1. Workbench; 2. Support frame; 3. U-shaped frame; 4. Cylinder; 5. T-shaped guide rail; 6. Limit plate; 7. Screw rod; 8. Limit frame; 9. Long rod; 10. Transmission gear; 11. Connecting gear; 12. Threaded rod; 13. Threaded barrel; 14. Connecting box; 15. Abutment box; 16. Pinion; 17. Moving tooth plate; 18. Adjusting barrel; 19. Adjusting threaded rod; 20. Transmission threaded rod; 21. Moving barrel; 22. T-shaped moving plate; 23. Vertical tooth plate; 24. Drill bit; 25. Spring rod; 26. Abutment block; 27. Rotating rod; 28. Ring; 29. ​​Brush plate; 30. Deflection gear; 31. Collecting box. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] Example:

[0033] Please combine Figure 1-5A drilling device for PCB board processing in this embodiment includes a workbench 1, a collecting box 31 is fixedly connected to the left side of the workbench 1, the height of the top of the collecting box 31 is consistent with the height of the bottom of the inner wall of the adjusting groove, so as to facilitate the collection of impurities on the surface of the PCB, a support frame 2 and a U-shaped frame 3 are installed on the top of the workbench 1, a cylinder 4 is installed on the top of the support frame 2, and a punching assembly is fixedly connected to the output end of the cylinder 4, and the punching assembly includes a T-shaped moving plate 22, and a vertical tooth plate 23 is fixedly connected to the left side of the top of the T-shaped moving plate 22 at equal intervals, and the top of the T-shaped moving plate 22 is fixed The bottom of the T-shaped movable plate 22 is fixedly connected to the bottom of the cylinder 4, and a punching motor is fixedly connected to the bottom of the T-shaped movable plate 22. A drill bit 24 is fixedly connected to the output end of the punching motor. Two spring rods 25 are fixedly connected to both sides of the bottom of the T-shaped movable plate 22. The bottom end of the spring rod 25 is fixedly connected to an abutment block 26 for abutting and fixing the PCB board during the drilling operation. A connecting groove is provided at the bottom of the U-shaped frame 3. A cleaning component is installed inside the connecting groove. The cleaning component includes a rotating rod 27 rotatably connected to the inner wall of the connecting groove at equal intervals. A sleeve 28 is sleeved on the outer side of the rotating rod 27. The sleeve 28 is sleeved on the outer side of the sleeve The bottom of the workbench 1 is fixedly connected with a brush plate 29, the outer side of the rotating rod 27 is sleeved with a deflection gear 30, the U-shaped frame 3 is provided with a mounting groove inside, the deflection gear 30 is installed inside the mounting groove, the surface of the deflection gear 30 is meshed with the surface of the vertical tooth plate 23, the top and bottom of the U-shaped frame 3 are evenly spaced with through holes for the vertical tooth plate 23 to pass through, which is used to clean impurities on the surface of the PCB board, the top of the workbench 1 is fixedly connected with two T-shaped guide rails 5, the top of the T-shaped guide rails 5 is slidably connected with a limit plate 6, the surface of the T-shaped guide rails 5 is evenly spaced with threaded openings, and the limit Bolts are installed on the front and back of the positioning plate 6, and the bolts are installed inside the threaded opening to facilitate limiting the positioning plate 6. The internal thread of the limiting plate 6 is connected to a screw rod 7, and the internal sliding connection of the limiting plate 6 is connected to a U-shaped plate. The U-shaped plate is fixedly connected to the top of the workbench 1, and a mounting block is installed at the bottom of the motor. The bottom of the mounting block is fixedly connected to the right side of the U-shaped plate. The U-shaped plate is used to shield the screw rod 7 to reduce the situation where impurities fall on the screw rod 7. The mounting block ensures the normal operation of the electric, one end of the screw rod 7 is fixedly connected to the motor, and the top of the limiting plate 6 is fixedly connected to the limiting component.

[0034] The limit assembly is used to adjust the relative position of the PCB board and the drill bit 24. The limit assembly includes a limit frame 8, a long rod 9 is installed inside the limit frame 8, and two transmission gears 10 are sleeved on the surface of the long rod 9. The surface of the transmission gear 10 is meshed with a connecting gear 11, and a threaded rod 12 is connected through the axis of the connecting gear 11. The thread directions of the two threaded rods 12 are the same. Bearings are installed on both sides of the inner wall of the limit frame 8, and the threaded rod 12 is installed inside the bearing. One end of the back threaded rod 12 is fixedly connected to a handwheel to ensure the normal operation of the threaded rod 12. The outer side of the threaded rod 12 is threadedly connected to a threaded barrel 13, and one end of the threaded barrel 13 is fixedly connected to an abutment assembly.

[0035] The abutment assembly is used to clamp the PCB board, and the abutment assembly includes a connection box 14. An adjustment groove is provided inside the limit frame 8. The connection box 14 is slidably arranged inside the adjustment groove. A through groove for a drill bit 24 to pass through is provided at the top of the inner wall of the adjustment groove. A placement groove is provided at the bottom of the inner wall of the adjustment groove to ensure the normal operation of the drill bit 24. An abutment box 15 is slidably connected to the inside of the connection box 14. A slide groove is provided at the top and bottom of the inner wall of the connection box 14. A card block is fixedly connected to the top and bottom of the abutment box 15. The card block is slidably arranged inside the slide groove to ensure the normal movement of the abutment box 15. One side of the inner wall of the connection box 14 rotates A transmission threaded rod 20 is dynamically connected, and a pinion 16 is sleeved on the outer side of the transmission threaded rod 20. A movable tooth plate 17 is threadedly connected to the surface of the pinion 16. A linear groove is provided at the bottom of the inner wall of the connecting box 14, and the movable tooth plate 17 is slidably arranged inside the linear groove to ensure the normal movement of the movable tooth plate 17. An adjusting cylinder 18 is fixedly connected to one side of the movable tooth plate 17, and an adjusting threaded rod 19 is threadedly connected to the inner side of the adjusting cylinder 18. The adjusting threaded rod 19 is rotatably connected to one side of the connecting box 14, and a movable cylinder 21 is threadedly connected to the outer side of the transmission threaded rod 20, and one end of the movable cylinder 21 is fixedly connected to one side of the abutment box 15.

[0036] The implementation principle of a drilling device for PCB board processing in the embodiment of the present application is: first, the PCB board is placed in the adjustment groove in the limit frame 8, and the two transmission threaded rods 20 are rotated at the same time, so that the two transmission threaded rods 20 move toward the surface of the PCB board with the two abutment boxes 15 through the two moving cylinders 21, so that the two abutment boxes 15 abut and clamp the PCB board, so that the device can clamp PCB boards of different sizes, thereby improving the application range of the device.

[0037] After the PCB board is clamped, the cylinder 4 and the motor are started to rotate the drill bit 24, so that the drill bit 24 moves downward to drill holes in the PCB board. After the drilling work is completed, the cylinder 4 moves upward with the drill bit 24, and the long rod 9 is rotated to rotate the long rod 9, thereby causing the two transmission gears 10 to rotate with the two connecting gears 11, so that the two threaded rods 12 rotate with the two threaded barrels 13. The thread directions of the two threaded rods 12 are consistent, so that when the threaded rods 12 rotate, the movement directions of the two threaded barrels 13 are consistent, thereby causing the two connecting boxes 14 to control the movement of the PCB board in the adjusting groove through the two abutment boxes 15, so that the drill bit 24 can drill holes in the PCB board at different positions, which is convenient for the device to drill holes at different positions of the PCB board, thereby improving the application range of the device.

[0038] After completing the punching work at the same longitudinal position, the bolts on both sides are rotated to push the limit plate 6 to move in the horizontal direction, so that the limit frame 8 moves. After moving to the next work location, the bolts are rotated again to connect the bolts and the T-shaped guide rail 5 again for limit. After the adjustment is completed, the punching work in the longitudinal direction is continued, so that when the device is performing the punching work, it is not necessary to continuously perform the tedious operation of clamping and releasing the PCB board, thereby improving the working efficiency of the device.

[0039] When the cylinder 4 descends with the T-shaped movable plate 22, the abutment blocks 26 on both sides will first abut against the surface of the PCB board, and the drill bit 24 continues to descend until the drilling operation is completed. During this process, the spring rod 25 continuously squeezes the abutment blocks 26, so that the abutment blocks 26 abut and fix against the surface of the PCB board, so that when the device is drilling, the PCB board can be abutted more stably, thereby improving the stability of the device during drilling.

[0040] When the PCB board is drilled, the limit frame 8 moves the PCB board to the left side, and the limit plate 6 moves the PCB board to the left side. After moving to the leftmost side, the limit plate 6 is reset, and the PCB board is re-limited and fixed. At the same time, before re-fixing, the cylinder 4 is started first to move the drill bit 24 to the initial position. After the fixation is completed, the cylinder 4 is started again to carry the drill bit 24 to perform the drilling work. In the process of the cylinder 4 moving to the initial position and the punching position, the T-shaped moving plate 22 moves up and down with multiple vertical tooth plates 23, so that the vertical tooth plates 23 rotate with the deflection gear 30, so that the rotating rod 27 deflects back and forth with the ring 28, so that the brush plate 29 sweeps the impurities on the surface of the PCB board to the front and back sides of the PCB board, so that the impurities fall into the collection box 31 for collection, which is convenient for the subsequent cleaning of the PCB board and improves the cleaning efficiency of the device.

[0041] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A drilling device for PCB board processing, characterized in that: The workbench (1) comprises a workbench (1), a support frame (2) and a U-shaped frame (3) are installed on the top of the workbench (1), a cylinder (4) is installed on the top of the support frame (2), an output end of the cylinder (4) is fixedly connected to a punching assembly, a connecting groove is provided at the bottom of the U-shaped frame (3), a cleaning assembly is installed inside the connecting groove, two T-shaped guide rails (5) are fixedly connected to the top of the workbench (1), a limit plate (6) is slidably connected to the top of the T-shaped guide rail (5), a screw rod (7) is threadedly connected to the inside of the limit plate (6), one end of the screw rod (7) is fixedly connected to a motor, and the top of the limit plate (6) is fixedly connected to the limit assembly; The limiting assembly comprises a limiting frame (8), a long rod (9) is installed inside the limiting frame (8), two transmission gears (10) are sleeved on the surface of the long rod (9), a connecting gear (11) is meshedly connected on the surface of the transmission gear (10), a threaded rod (12) is penetrated and connected at the axis of the connecting gear (11), a threaded cylinder (13) is threadedly connected on the outer side of the threaded rod (12), and an abutment assembly is fixedly connected to one end of the threaded cylinder (13); The abutment assembly comprises a connection box (14), the connection box (14) is slidably connected to the abutment box (15) inside, a transmission threaded rod (20) is rotatably connected to one side of the inner wall of the connection box (14), a pinion (16) is sleeved on the outer side of the transmission threaded rod (20), a movable tooth plate (17) is threadedly connected to the surface of the pinion (16), an adjustment cylinder (18) is fixedly connected to one side of the movable tooth plate (17), the inner part of the adjustment cylinder (18) is threadedly connected to the adjustment threaded rod (19), the adjustment threaded rod (19) is rotatably connected to one side of the connection box (14), the outer side of the transmission threaded rod (20) is threadedly connected to the movable cylinder (21), and one end of the movable cylinder (21) is fixedly connected to one side of the abutment box (15).

2. A drilling device for PCB board processing as claimed in claim 1, characterized in that: The punching assembly comprises a T-shaped movable plate (22), a vertical tooth plate (23) being fixedly connected at equal intervals on the left side of the top of the T-shaped movable plate (22), the top of the T-shaped movable plate (22) being fixedly connected to the bottom end of the cylinder (4), the bottom of the T-shaped movable plate (22) being fixedly connected to a punching motor, the output end of the punching motor being fixedly connected to a drill bit (24), two spring rods (25) being fixedly connected to both sides of the bottom of the T-shaped movable plate (22), and the bottom ends of the spring rods (25) being fixedly connected to abutment blocks (26).

3. A drilling device for PCB board processing as claimed in claim 2, characterized in that: The cleaning assembly comprises a rotating rod (27) rotatably connected to the inner wall of the connecting groove at equal intervals, a collar (28) is sleeved on the outer side of the rotating rod (27), a brush plate (29) is fixedly connected to the bottom of the collar (28), a deflection gear (30) is sleeved on the outer side of the rotating rod (27), a mounting groove is provided inside the U-shaped frame (3), the deflection gear (30) is installed inside the mounting groove, the surface of the deflection gear (30) is meshed with the surface of the vertical tooth plate (23), and through openings for the vertical tooth plate (23) to pass through are evenly spaced at the top and bottom of the U-shaped frame (3).

4. A drilling device for PCB board processing as claimed in claim 3, characterized in that: The limiting plate (6) is internally slidably connected to a U-shaped plate, the U-shaped plate is fixedly connected to the top of the workbench (1), a mounting block is installed at the bottom of the motor, and the bottom of the mounting block is fixedly connected to the right side of the U-shaped plate.

5. A drilling device for PCB board processing as claimed in claim 4, characterized in that: Bearings are installed on both sides of the inner wall of the limiting frame (8), the threaded rod (12) is installed inside the bearing, and one end of the back threaded rod (12) is fixedly connected to a hand wheel.

6. A drilling device for PCB board processing as claimed in claim 5, characterized in that: The top and bottom of the inner wall of the connection box (14) are both provided with sliding grooves, and the top and bottom of the abutment box (15) are both fixedly connected with clamping blocks, which are slidably arranged inside the sliding grooves.

7. A drilling device for PCB board processing as claimed in claim 6, characterized in that: A linear groove is provided at the bottom of the inner wall of the connection box (14), and a movable tooth plate (17) is slidably arranged inside the linear groove.

8. A drilling device for PCB board processing as claimed in claim 7, characterized in that: An adjusting groove is provided inside the limiting frame (8), a connecting box (14) is slidably arranged inside the adjusting groove, a through groove for a drill bit (24) to pass through is provided at the top of the inner wall of the adjusting groove, and a placement groove is provided at the bottom of the inner wall of the adjusting groove.

9. A drilling device for PCB board processing as claimed in claim 8, characterized in that: A collecting box (31) is fixedly connected to the left side of the workbench (1), and the height of the top of the collecting box (31) is consistent with the height of the bottom of the inner wall of the adjustment groove.

10. A drilling device for PCB board processing as claimed in claim 9, characterized in that: The surface of the T-shaped guide rail (5) is provided with threaded openings at equal intervals, and bolts are installed on the front and back sides of the limiting plate (6), and the bolts are installed inside the threaded openings.

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