A dustless drilling equipment for printed circuit board processing

Abstract

The application discloses a dust-free drilling equipment for printed circuit board processing, and particularly relates to the technical field of printed circuit board processing, and comprises a processing table, a drilling assembly is arranged at the upper end of the processing table, a moving assembly is arranged at the upper side of the processing table, a rotating assembly is arranged at the upper side of the drilling assembly, a limiting assembly is arranged at the upper side of the rotating assembly, and an adjusting assembly is arranged at the upper side of the drilling assembly. The application controls the inclination angle of the processing table through various assemblies, and can complete the processing of the inclined differential holes on the printed circuit board in single clamping through the 180-degree rotation of the rotating assembly, without the need of adjusting the angle and orientation of the circuit board for multiple times, so that the matching precision of the differential hole pair is ensured, meanwhile, the multidirectional movement of the moving assembly and the follow-up limiting of the limiting assembly are complementary, the drilling area is always in a stable limiting state, manual intervention is reduced as a whole, processing deviation caused by manual operation is reduced, and the consistency of batch processing is ensured.

Description

Technical Field

[0001] This invention relates to the field of printed circuit board processing technology, and in particular to a dust-free drilling device for printed circuit board processing. Background Technology

[0002] Cleanroom drilling equipment for printed circuit boards (PCBs) is a key piece of equipment in the electronics manufacturing industry for machining holes in PCBs. Its core function is to perform precise drilling while ensuring a clean processing environment. One important application scenario is the machining of tilted differential holes. As electronic devices become faster and smaller, PCBs need to adapt to the requirements of high-speed differential signal transmission. Tilted differential holes, by creating a preset angle between adjacent holes in a horizontal cross-section, can disrupt the electromagnetic field coupling path between signal holes, significantly reducing crosstalk and ensuring signal integrity. This is a core processing structure for high-end PCBs such as high-speed communication boards and AI server backplanes. Simultaneously, drilling PCB substrates easily generates resin and fiberglass debris. Cleanroom processing avoids dust contamination of circuits and blockage of hole walls, ensuring the electrical performance and processing accuracy of the PCB. Therefore, cleanroom operation and precise machining of tilted differential holes are core requirements for this type of equipment.

[0003] Existing technologies have many shortcomings: First, the processing of tilted differential holes mostly relies on manual adjustment of the PCB board angle or independent drive module control of tilt, making it difficult to guarantee angle accuracy. Moreover, it requires multiple clamping to complete the processing of paired holes, which is inefficient and prone to positioning deviations. Second, the coordination between the moving components and the limiting components is poor. During the movement of the PCB board, the drilling area is prone to vibration and displacement, affecting the hole position accuracy and making it difficult to meet the precision processing requirements of high-end PCBs. Summary of the Invention

[0004] The main objective of this invention is to provide a dust-free drilling device for printed circuit board processing, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dust-free drilling device for printed circuit board processing includes a processing table, a drilling assembly at the upper end of the processing table, a moving assembly on the upper side of the processing table that can move the printed circuit board back and forth and left and right, a rotating assembly on the upper side of the drilling assembly, a limiting assembly on the upper side of the rotating assembly that can limit the circuit board, the limiting assembly including a processing table, and an adjusting assembly on the upper side of the drilling assembly that can tilt the processing table.

[0006] Preferably, the drilling assembly includes a fixed base fixedly connected to the upper end of the processing table, a mounting base fixedly connected to the front end of the fixed base, a hydraulic device I fixedly mounted on the upper end of the mounting base, a lifting base fixedly connected to the output end of the hydraulic device I, a mounting plate fixedly connected to the front end of the lifting base, a drilling machine fixedly mounted on the front end of the mounting plate, dust suction pipes provided on both the left and right sides of the drilling machine, a conveying pipe fixedly connected to the upper end of the dust suction pipe, a dust collection bin fixedly connected to the end of the conveying pipe away from the dust suction pipe, and the dust collection bin fixedly connected to the upper end of the processing table.

[0007] Preferably, the moving component includes a second hydraulic device fixedly mounted to the upper end of the processing table, a processing seat fixedly connected to the upper end of the processing table, a movable groove first opened at the upper end of the processing seat, a sliding seat first fixedly connected to the output end of the second hydraulic device, the lower end of the sliding seat first slidably connected to the processing seat, a limiting seat first fixedly connected to the upper end of the processing table, a third hydraulic device slidably connected to the outer surface of the limiting seat first, a second sliding seat fixedly connected to the output end of the third hydraulic device, a first rotating shaft rotatably connected to the upper end of the second sliding seat, a rotating disk fixedly connected to the upper end of the first rotating shaft, a rotating seat rotatably connected to the upper end of the rotating disk, and the lower end of the second sliding seat slidably connected to the first sliding seat.

[0008] Preferably, the upper end of the sliding seat is provided with a sliding groove, and the right side of the sliding seat is provided with a movable groove, and the sliding groove and the movable groove are connected.

[0009] Preferably, the adjustment assembly includes a support plate 1 fixedly connected to the left side of the upper end of the sliding seat 1, a support plate 2 slidably connected to the inner surface of the sliding groove 1, and two limiting seats 2 fixedly connected to the right end of the support plate 2. When the two limiting seats 2 slide in the sliding seat 1, they can limit the support plate 2 and keep it stable.

[0010] Preferably, a rack is fixedly connected to the right end of the support plate 2, a connecting seat is fixedly connected to the right end of the lifting seat, a fixing rod is fixedly connected to the left and right sidewalls of the inner surface of the connecting seat, a rack 2 is slidably connected to the outer surface of the fixing rod, the outer surface of the rack 2 is slidably connected to the movable groove 1, a sliding groove 2 is opened at the front end of the rack 2, a connecting block is slidably connected to the inner surface of the support plate 1, and the left end of the connecting block is fixedly connected to the sliding seat 1.

[0011] Preferably, the adjusting assembly further includes a rotating shaft two rotatably connected to the inner surface of the movable groove two, a gear one fixedly connected to the outer surface of the rotating shaft two, the outer surface of the gear one meshing with a rack two, and a gear two fixedly connected to the rear side of the outer surface of the rotating shaft two, the outer surface of the gear two meshing with a rack one.

[0012] Preferably, the rotating assembly includes a pulley transmission mechanism fixedly connected to the upper end of the rotating shaft, a rotating column fixedly connected to the lower side of the pulley transmission mechanism away from the rotating shaft, a one-way rotating shaft installed at the connection between the rotating column and the pulley transmission mechanism, a guide groove opened on the outer surface of the rotating column, a connecting plate fixedly connected to the right end of the sliding seat, the upper end of the connecting plate being rotatably connected to the rotating column, a fixing block fixedly connected to the right end of the sliding seat, and a limit frame fixedly connected to the end of the fixing block away from the sliding seat.

[0013] Preferably, the left end of the support plate two is provided with a sliding groove three, the inner surface of the sliding groove three is slidably connected to a sliding block one, the left end of the sliding block one is fixedly connected to a guide block, the outer surface of the guide block is slidably connected to the limiting frame, and the outer surface of the guide block is slidably connected to the guide groove.

[0014] Preferably, the limiting component includes a slot opened at the middle position of the upper end of the processing table, and sliding grooves are opened on both the front and rear sides of the upper end of the processing table. Two elastic blocks are slidably connected to the inner surfaces of the two sliding grooves. The upper end of the processing table is slidably connected to two pressure plates. The lower end of each of the two pressure plates is provided with two sliding grooves. The inner surface of the two sliding grooves on the same side is fixedly connected to a limit rod. The outer surface of the two limit rods on the same side is slidably connected to a sliding block. The lower end of the two sliding blocks on the same side is fixedly connected to the upper end of the corresponding elastic block. The upper end of each of the two pressure plates is slidably connected to a rotating rod. The upper end of each of the two rotating rods is fixedly connected to a telescopic rod. The ends of the two telescopic rods that are close to each other are fixedly connected to the mounting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention achieves dust-free drilling while simultaneously controlling the tilt angle of the processing table through the linkage of the drilling component, the moving component, and the adjusting component. Furthermore, the 180-degree rotation of the rotating component allows for the processing of tilted differential holes on printed circuit boards in a single clamping operation, eliminating the need for multiple adjustments to the circuit board angle and orientation. This ensures the matching accuracy of the differential hole pairs and guarantees signal integrity during high-speed signal transmission. Simultaneously, the multi-directional movement of the moving component and the follow-up limiting of the limiting component complement each other, ensuring that the drilling area remains in a stable limiting state regardless of the circuit board's position. This effectively avoids vibration and displacement problems that may occur during movement, reducing overall manual intervention, minimizing processing deviations caused by human operation, and ensuring consistency in batch processing.

[0016] 2. This invention, through the cooperation of drilling, moving, adjusting, and rotating components, enables integrated processing of tilted differential holes while drilling in a dust-free environment. When the hydraulic device one of the drilling component drives the lifting seat to descend, it simultaneously drives the support plate two to lift the processing table and tilt it. After the processing table is reset, the guide block of the rotating component slides into the guide groove of the rotating column, thereby driving the processing table to complete a 180-degree rotation. This avoids positioning deviations caused by repeated clamping and ensures the matching accuracy of the differential hole pairs. At the same time, hydraulic devices two and three drive sliding seats one and two respectively, moving the processing table in all directions. With the elastic locking block and pressure plate of the limiting component, the drilling area of ​​the circuit board remains stable. The entire process is automated through mechanical linkage, reducing manual intervention and ensuring consistency in batch processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drilling assembly of the present invention; Figure 3 This is a schematic diagram of the structure of the moving component of the present invention; Figure 4 This is a schematic diagram of the structure of the adjustment component of the present invention; Figure 5 This is a partial structural schematic diagram of the adjustment component of the present invention; Figure 6 This is a schematic diagram of the structure of the rotating component of the present invention; Figure 7 This is a partial structural schematic diagram of the rotating component of the present invention; Figure 8 This is a schematic diagram of the limiting component of the present invention; Figure 9 This is a partial structural schematic diagram of the limiting component of the present invention; Figure 10 This is a schematic diagram of the structure of the pressure plate of the present invention; Figure 11 This is a schematic diagram of the drilled cross-sectional structure of the printed circuit board of the present invention.

[0018] In the diagram: 1. Machining table; 2. Drilling assembly; 21. Fixed base; 22. Mounting base; 23. Hydraulic device one; 24. Lifting base; 25. Mounting plate; 26. Drilling machine; 27. Dust suction pipe; 28. Conveying pipe; 29. ​​Dust collection bin; 3. Moving assembly; 31. Hydraulic device two; 32. Machining base; 321. Movable groove one; 33. Sliding seat one; 331. Sliding groove one; 332. Movable groove two; 34. Limiting seat one; 35. Hydraulic device three; 36. Sliding seat two; 361. Rotating shaft one; 37. Rotating disk; 371. Rotating seat; 4. Adjusting assembly; 41. Support plate one; 42. Support plate two; 43. Limiting seat two; 44. Rack and pinion. 1. Connecting seat; 45. Fixing rod; 47. Rack 2; 471. Sliding groove 2; 472. Connecting block; 48. Rotating shaft 2; 410. Gear 1; 411. Gear 2; 5. Rotating assembly; 51. Belt pulley transmission mechanism; 52. Rotating column; 521. Guide groove; 53. Connecting plate; 54. Fixing block; 55. Limiting frame; 56. Guide block; 57. Sliding block 1; 58. Sliding groove 3; 6. Limiting assembly; 61. Processing table; 611. Slot; 612. Sliding groove 4; 63. Elastic block; 631. Sliding block 2; 64. Pressure plate; 641. Sliding groove 5; 642. Limiting rod; 65. Rotating rod; 66. Telescopic rod. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1, as Figure 1 As shown, a dust-free drilling device for printed circuit board processing includes a processing table 1, a drilling assembly 2 at the upper end of the processing table 1, a moving assembly 3 on the upper side of the processing table 1 that can drive the printing plate to move back and forth and left and right, a rotating assembly 5 on the upper side of the drilling assembly 2, a limiting assembly 6 on the upper side of the rotating assembly 5 that can limit the circuit board, the limiting assembly 6 including a processing table 61, and an adjusting assembly 4 on the upper side of the drilling assembly 2 that can drive the processing table 61 to tilt.

[0021] In the operation of this embodiment, while achieving dust-free drilling, the tilt angle of the processing table 61 is controlled by the linkage of the drilling component 2, the moving component 3 and the adjusting component 4. In addition, with the 180-degree rotation of the rotating component 5, the processing of tilted differential holes on the printed circuit board can be completed in a single clamping, without the need to adjust the angle and orientation of the circuit board multiple times. This ensures the matching accuracy of the differential hole pairs and guarantees the signal integrity during high-speed signal transmission. At the same time, the multi-directional movement of the moving component 3 and the follow-up limiting of the limiting component 6 complement each other. No matter what position the circuit board is in, the drilling area is always in a stable limiting state, effectively avoiding vibration, displacement and other problems that may occur during the movement. Overall, it reduces manual intervention, reduces processing deviations caused by human operation, and ensures the consistency of batch processing.

[0022] Example 2, as Figure 1-11 The drilling assembly 2 includes a fixed base 21 fixedly connected to the upper end of the processing table 1. A mounting base 22 is fixedly connected to the front end of the fixed base 21. A hydraulic device 23 is fixedly installed at the upper end of the mounting base 22. A lifting base 24 is fixedly connected to the output end of the hydraulic device 23. A mounting plate 25 is fixedly connected to the front end of the lifting base 24. A drilling machine 26 is fixedly installed at the front end of the mounting plate 25. Dust suction pipes 27 are provided on both the left and right sides of the drilling machine 26. A conveying pipe 28 is fixedly connected to the upper end of the dust suction pipe 27. A dust collection bin 29 is fixedly connected to the end of the conveying pipe 28 away from the dust suction pipe 27. The dust collection bin 29 is fixedly connected to the upper end of the processing table 1.

[0023] Specifically, the drilling machine 26 mentioned above is existing technology. Its working principle is as follows: After receiving the CAD drilling coordinate command, the CNC system drives the X / Y axis motion module to quickly position the PCB or drill bit to the target hole position; then the spindle drives the drill bit to rotate at a high speed of tens of thousands of revolutions per minute, and the Z-axis servo system controls the drill bit to drill vertically downwards, accurately controlling the drilling depth according to the PCB board thickness and hole diameter parameters; during the drilling process, the high-pressure airflow simultaneously removes waste materials such as resin, glass fiber, and copper chips from the hole in a timely manner to avoid hole blockage that could lead to drill bit breakage or hole wall quality defects, until all holes are processed. The entire process is controlled with micron-level precision through feedback elements such as grating rulers. It belongs to the conventional technical field and therefore will not be described in detail in this solution.

[0024] Activating the hydraulic device 23 can push the lifting seat 24, mounting plate 25 and drilling machine 26 and other structures to descend as a whole to solder the printed circuit board. At the same time, the air pump inside the dust collection chamber 29 is activated. The air pump uses the delivery pipe 28 and the suction pipe 27 to absorb all the dust and debris generated during drilling into the dust collection chamber 29, achieving dust-free drilling.

[0025] The moving component 3 includes a hydraulic device 2 31 fixedly installed on the upper end of the processing table 1. A processing seat 32 is fixedly connected to the upper end of the processing table 1. A movable groove 321 is opened on the upper end of the processing seat 32 to facilitate the left and right movement of the rack 2 47. A sliding seat 33 is fixedly connected to the output end of the hydraulic device 2 31. The lower end of the sliding seat 33 is slidably connected to the processing seat 32. A limit seat 34 is fixedly connected to the upper end of the processing table 1. A hydraulic device 35 is slidably connected to the outer surface of the limit seat 34. A sliding seat 2 36 is fixedly connected to the output end of the hydraulic device 35. A rotating shaft 361 is rotatably connected to the upper end of the sliding seat 2 36. A rotating disk 37 is fixedly connected to the upper end of the rotating shaft 361. A rotating seat 371 is rotatably connected to the upper end of the rotating disk 37. The lower end of the sliding seat 2 36 is slidably connected to the sliding seat 33.

[0026] The upper end of the sliding seat 33 is provided with a sliding groove 331, and the right side of the sliding seat 33 is provided with a movable groove 332. The sliding groove 331 and the movable groove 332 are connected.

[0027] Furthermore, starting the hydraulic device 2 31 can push the sliding seat 1 33 to move left and right on the processing seat 32, while the hydraulic device 3 35 can drive the sliding seat 2 36 and the processing table 61 to move back and forth on the upper end of the sliding seat 1 33, so that the drilling machine 26 can drill holes at various positions on the printed circuit board.

[0028] The adjustment assembly 4 includes a support plate 41 fixedly connected to the left side of the upper end of the sliding seat 33. A support plate 42 is slidably connected to the inner surface of the sliding groove 331. Two limiting seats 43 are fixedly connected to the right end of the support plate 42. When the two limiting seats 43 slide in the sliding seat 33, they can limit the support plate 42 and keep it stable.

[0029] Furthermore, when the processing table 61 is pushed back and forth by the hydraulic device 35, it slides on the upper end of the support plate 41 and the support plate 42.

[0030] A rack 44 is fixedly connected to the right end of the support plate 22, and a connecting seat 45 is fixedly connected to the right end of the lifting seat 24. A fixing rod 46 is fixedly connected to the left and right side walls of the inner surface of the connecting seat 45. A rack 47 is slidably connected to the outer surface of the fixing rod 46. The outer surface of the rack 47 is slidably connected to the movable groove 321. A sliding groove 471 is opened at the front end of the rack 47. A connecting block 472 is slidably connected to the inner surface of the support plate 41. The left end of the connecting block 472 is fixedly connected to the sliding seat 33.

[0031] Furthermore, the connecting block 472 can limit the rack 47. When the hydraulic device 31 pushes the sliding seat 33 to move left and right, the rack 47 always moves together with the sliding seat 33.

[0032] The adjustment assembly 4 also includes a rotating shaft 48 that is rotatably connected to the inner surface of the movable groove 332. A gear 410 is fixedly connected to the outer surface of the rotating shaft 48. The outer surface of the gear 410 meshes with a rack 47. A gear 411 is fixedly connected to the rear side of the outer surface of the rotating shaft 48. The outer surface of the gear 411 meshes with a rack 44.

[0033] Furthermore, a rubber pad is provided between the rotating shaft 2 48 and the sliding seat 1 33, which provides strong resistance. When the gear 2 411 and the rack 1 44 are not meshed, the gear 2 411 will remain in that position and thus always maintain the meshing state with the rack 1 44, preventing the rack 1 44 from sliding down.

[0034] The hydraulic device 23 is activated to push the lifting seat 24, the mounting plate 25 and the drilling machine 26 down as a whole. During the descent, the rack 47 will mesh with the gear 410, causing the gear 410 to drive the rotating shaft 48 and the gear 411 to rotate synchronously. This, in turn, causes the gear 411 to mesh with the rack 44, causing the rack 44 and the support plate 42 to rise as a whole. During the rise, the support plate 42 will lift the right side of the processing table 61, causing it to tilt to the left.

[0035] Furthermore, the drilling machine 26 will only contact the circuit board surface and begin drilling after the rack 27 and gear 1 are completely disengaged, thus avoiding the impact of height fine-tuning on the stability of the processing table 61 during drilling. Even after the rack 27 and gear 1 are disengaged, the resistance of the rotating shaft 2 48 itself can support the meshing of gear 2 411 and rack 1 44, thereby keeping the support plate 2 42 stable.

[0036] Simultaneously, when the drilling machine 26 rises, it will also drive the rack 2 47 to mesh with the gear 1 410, thereby driving the support plate 2 42 to descend. During the drilling process of the drilling machine 26, the drilling machine 26 first separates from the circuit board, and then the rack 2 47 meshes with the gear 1 410, thereby driving the support plate 2 42 to descend.

[0037] Furthermore, after the processing table 61 is tilted, the hole drilled by the drilling machine 26 will be tilted. This method is suitable for high-speed differential signal transmission scenarios. Traditional straight holes will cause the electromagnetic fields of adjacent signal holes to be directly coupled, resulting in serious crosstalk. Tilted holes can make adjacent differential pairs form a preset angle in the horizontal cross section, destroying the electromagnetic field coupling path and significantly improving signal integrity. This is commonly seen in high-speed communication boards, AI server backplanes, etc.

[0038] The rotating assembly 5 includes a belt pulley transmission mechanism 51 fixedly connected to the upper end of the rotating shaft 361. A rotating column 52 is fixedly connected to the lower side of the belt pulley transmission mechanism 51 away from the rotating shaft 361. A one-way rotating shaft is installed at the connection between the rotating column 52 and the belt pulley transmission mechanism 51. A guide groove 521 is opened on the outer surface of the rotating column 52. A connecting plate 53 is fixedly connected to the right end of the sliding seat 36. The upper end of the connecting plate 53 is rotatably connected to the rotating column 52. A fixing block 54 is fixedly connected to the right end of the sliding seat 36. A limit bracket 55 is fixedly connected to the end of the fixing block 54 away from the sliding seat 36.

[0039] The left end of the support plate 2 42 is provided with a sliding groove 3 58. The inner surface of the sliding groove 3 58 is slidably connected to a sliding block 1 57. The left end of the sliding block 1 57 is fixedly connected to a guide block 56. The outer surface of the guide block 56 is slidably connected to the limiting frame 55 and the outer surface of the guide block 56 is slidably connected to the guide groove 521.

[0040] Furthermore, when the guide block 56 descends, the one-way rotating shaft at the connection between the rotating column 52 and the belt pulley transmission mechanism 51 contacts the guide groove 521, thus causing it to rotate only counterclockwise. When the guide block 56 rises, the rotating column 52 rotates while the belt pulley transmission mechanism 51 remains stationary.

[0041] Furthermore, the descent of the second support plate 42 involves two strokes. When the second rack 47 meshes with the first gear 410, thereby driving the second support plate 42 to descend, the second support plate 42 will first drive the processing table 61 to a horizontal state. In this state, the guide block 56 is located at the upper end of the guide groove 521. Subsequently, the second rack 47 is driven by the drilling machine 26 to continue to rise, while the second support plate 42 continues to descend, driving the guide block 56 to slide into the guide groove 521, so that the rotating column 52 rotates counterclockwise by 180 degrees, simultaneously driving the belt pulley transmission mechanism 51, the rotating shaft 361, and the processing table 61 to rotate by 180 degrees.

[0042] The presence of the fixed block 54, the limiting bracket 55 and the sliding block 57 ensures that the guide block 56 can smoothly contact the guide groove 521 no matter which position the sliding seat 36 moves to.

[0043] After the processing table 61 rotates 180 degrees, the drilling machine 26 is at its highest point. Then, it is controlled to descend again, causing the rack 2 47 to mesh with the gear 1 410 again, which drives the support plate 2 42 to rise. Finally, the processing table 61 returns to its overall tilted position to the left, so that the second drilling can form a hole position corresponding to the tilt direction of the first drilling. This helps adjacent differential pairs form a preset angle in the horizontal section, providing key structural support for impedance matching and signal coupling uniformity required for differential signal transmission, and effectively reducing interference and loss during signal transmission. At the same time, this rotation process does not require manual adjustment of the circuit board orientation, completely avoiding the angle deviation caused by manual operation, ensuring the consistency of the relative position between the paired holes, and providing a guarantee for the stability of batch processing.

[0044] The limiting component 6 includes a slot 611 opened at the middle position of the upper end of the processing table 61, and sliding grooves 612 are opened on both the front and rear sides of the upper end of the processing table 61. Two elastic blocks 63 are slidably connected to the inner surfaces of the two sliding grooves 612.

[0045] Slot 611 is used to hold printed circuit boards.

[0046] The upper end of the processing table 61 is slidably connected to two pressure plates 64. The lower end of each pressure plate 64 is provided with two sliding grooves 641. The inner surface of the two sliding grooves 641 on the same side is fixedly connected to a limit rod 642. The outer surface of the two limit rods 642 on the same side is slidably connected to a sliding block 631. The lower end of the two sliding blocks 631 on the same side is fixedly connected to the upper end of the corresponding elastic block 63. The upper end of each pressure plate 64 is slidably connected to a rotating rod 65. The upper end of each rotating rod 65 is fixedly connected to a telescopic rod 66. The ends of the two telescopic rods 66 that are close to each other are fixedly connected to the mounting plate 25.

[0047] Furthermore, the elastic block 63 mentioned above is equipped with a spring, which can drive the pressure plate 64 to always be in contact with the upper end of the processing table 61. When the mounting plate 25 descends, only the telescopic rod 66 itself will extend and retract, without putting additional pressure on the pressure plate 64.

[0048] When the processing table 61 moves left and right, the elastic block 63 and the pressure plate 64 slide left and right in the sliding groove 612. When the processing table 61 moves back and forth, the elastic block 63 and the sliding block 631 slide back and forth on the outer surface of the limit rod 642. No matter whether the circuit board moves back and forth or left and right, the pressure plate 64 can always maintain a stable limit state near the drilling position of the circuit board.

[0049] Therefore, this solution, through the cooperation of drilling assembly 2, moving assembly 3, adjusting assembly 4, and rotating assembly 5, can achieve integrated processing of tilted differential holes while drilling in a dust-free environment. When the hydraulic device 23 of drilling assembly 2 drives the lifting seat 24 to descend, it will simultaneously drive the support plate 42 to lift the processing table 61 to tilt. After the processing table 61 is reset, the guide block 56 of rotating assembly 5 will slide into the guide groove 521 of rotating column 52, thereby driving the processing table 61 to complete a 180-degree rotation. This avoids the positioning deviation caused by repeated clamping and ensures the matching accuracy of the differential hole pairs. At the same time, hydraulic device 31 and hydraulic device 35 drive sliding seat 33 and sliding seat 36 respectively to move the processing table 61 in all directions. With the elastic locking block 63 and pressure plate 64 of limiting assembly 6 moving and limiting, the drilling area of ​​the circuit board is always stable. The whole process is automated through mechanical linkage, reducing manual intervention and ensuring the consistency of batch processing.

[0050] It should be noted that the specific installation methods, circuit connection methods, and control methods of the hydraulic device 1 23, drilling machine 26, hydraulic device 2 31, hydraulic device 3 35, and air pump used in this invention are all conventional designs, and will not be described in detail in this invention.

[0051] 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 illustrative of the 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 present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A dust-free drilling device for printed circuit board processing, comprising a processing table (1), wherein a drilling assembly (2) is provided at the upper end of the processing table (1), characterized in that: The upper side of the processing table (1) is provided with a moving component (3) that can drive the printed circuit board to move back and forth and left and right. The upper side of the drilling component (2) is provided with a rotating component (5). The upper side of the rotating component (5) is provided with a limiting component (6) that can limit the circuit board. The limiting component (6) includes a processing table (61). The upper side of the drilling component (2) is provided with an adjusting component (4) that can drive the processing table (61) to tilt.

2. The dust-free drilling equipment for printed circuit board processing according to claim 1, characterized in that: The drilling assembly (2) includes a fixed base (21) fixedly connected to the upper end of the processing table (1). A mounting base (22) is fixedly connected to the front end of the fixed base (21). A hydraulic device (23) is fixedly installed at the upper end of the mounting base (22). A lifting seat (24) is fixedly connected to the output end of the hydraulic device (23). A mounting plate (25) is fixedly connected to the front end of the lifting seat (24). A drilling machine (26) is fixedly installed at the front end of the mounting plate (25). Dust suction pipes (27) are provided on both the left and right sides of the drilling machine (26). A conveying pipe (28) is fixedly connected to the upper end of the dust suction pipe (27). A dust collection chamber (29) is fixedly connected to the end of the conveying pipe (28) away from the dust suction pipe (27). The dust collection chamber (29) is fixedly connected to the upper end of the processing table (1).

3. The dust-free drilling equipment for printed circuit board processing according to claim 2, characterized in that: The moving component (3) includes a hydraulic device two (31) fixedly installed on the upper end of the processing table (1). A processing seat (32) is fixedly connected to the upper end of the processing table (1). A movable groove (321) is opened on the upper end of the processing seat (32). A sliding seat (33) is fixedly connected to the output end of the hydraulic device two (31). The lower end of the sliding seat (33) is slidably connected to the processing seat (32). A limit seat (34) is fixedly connected to the upper end of the processing table (1). A hydraulic device three (35) is slidably connected to the outer surface of the limiting seat one (34). A sliding seat two (36) is fixedly connected to the output end of the hydraulic device three (35). A rotating shaft one (361) is rotatably connected to the upper end of the sliding seat two (36). A rotating disk (37) is fixedly connected to the upper end of the rotating shaft one (361). A rotating seat (371) is rotatably connected to the upper end of the rotating disk (37). The lower end of the sliding seat two (36) is slidably connected to the sliding seat one (33).

4. The dust-free drilling equipment for printed circuit board processing according to claim 3, characterized in that: The upper end of the sliding seat (33) is provided with a sliding groove (331), and the right side of the sliding seat (33) is provided with a movable groove (332). The sliding groove (331) and the movable groove (332) are connected.

5. The dust-free drilling equipment for printed circuit board processing according to claim 4, characterized in that: The adjustment component (4) includes a support plate (41) fixedly connected to the left side of the upper end of the sliding seat (33). The inner surface of the sliding groove (331) is slidably connected to a support plate (42). The right end of the support plate (42) is fixedly connected to two limiting seats (43). When the two limiting seats (43) slide in the sliding seat (33), they can limit the support plate (42) to keep it stable.

6. The dust-free drilling equipment for printed circuit board processing according to claim 5, characterized in that: The right end of the support plate 2 (42) is fixedly connected to the rack 1 (44), the right end of the lifting seat (24) is fixedly connected to the connecting seat (45), the left and right side walls of the inner surface of the connecting seat (45) are fixedly connected to the fixing rod (46), the outer surface of the fixing rod (46) is slidably connected to the rack 2 (47), the outer surface of the rack 2 (47) is slidably connected to the movable groove 1 (321), the front end of the rack 2 (47) is provided with the sliding groove 2 (471), the inner surface of the support plate 1 (41) is slidably connected to the connecting block (472), and the left end of the connecting block (472) is fixedly connected to the sliding seat 1 (33).

7. The dust-free drilling equipment for printed circuit board processing according to claim 6, characterized in that: The adjustment assembly (4) further includes a rotating shaft (48) rotatably connected to the inner surface of the movable groove (332). A gear (410) is fixedly connected to the outer surface of the rotating shaft (48). The outer surface of the gear (410) meshes with a rack (47). A gear (411) is fixedly connected to the rear side of the outer surface of the rotating shaft (48). The outer surface of the gear (411) meshes with a rack (44).

8. The dust-free drilling equipment for printed circuit board processing according to claim 5, characterized in that: The rotating assembly (5) includes a belt pulley transmission mechanism (51) fixedly connected to the upper end of the rotating shaft (361). A rotating column (52) is fixedly connected to the lower side of the belt pulley transmission mechanism (51) away from the rotating shaft (361). A one-way rotating shaft is installed at the connection between the rotating column (52) and the belt pulley transmission mechanism (51). A guide groove (521) is provided on the outer surface of the rotating column (52). A connecting plate (53) is fixedly connected to the right end of the sliding seat (36). The upper end of the connecting plate (53) is rotatably connected to the rotating column (52). A fixing block (54) is fixedly connected to the right end of the sliding seat (36). A limit frame (55) is fixedly connected to the end of the fixing block (54) away from the sliding seat (36).

9. The dust-free drilling equipment for printed circuit board processing according to claim 8, characterized in that: The left end of the support plate 2 (42) is provided with a sliding groove 3 (58), the inner surface of the sliding groove 3 (58) is slidably connected to a sliding block 1 (57), the left end of the sliding block 1 (57) is fixedly connected to a guide block (56), the outer surface of the guide block (56) is slidably connected to the limiting frame (55), and the outer surface of the guide block (56) is slidably connected to the guide groove (521).

10. A dust-free drilling device for printed circuit board processing according to claim 2, characterized in that: The limiting component (6) includes a slot (611) opened at the middle position of the upper end of the processing table (61), and sliding grooves (612) are opened on both the front and rear sides of the upper end of the processing table (61). Two elastic blocks (63) are slidably connected to the inner surfaces of the two sliding grooves (612). The upper end of the processing table (61) is slidably connected to two pressure plates (64). The lower ends of the two pressure plates (64) are provided with two sliding grooves (641). The inner surfaces of the two sliding grooves (641) on the same side are fixedly connected to limit rods (642). The outer surfaces of the two limit rods (642) on the same side are slidably connected to sliding blocks (631). The lower ends of the two sliding blocks (631) on the same side are fixedly connected to the upper ends of the corresponding elastic blocks (63). The upper ends of the two pressure plates (64) are slidably connected to rotating rods (65). The upper ends of the two rotating rods (65) are fixedly connected to telescopic rods (66). The ends of the two telescopic rods (66) that are close to each other are fixedly connected to the mounting plate (25).

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