Cutting device for circuit board and cutting method thereof

Abstract

The invention relates to the technical field of circuit board cutting, and discloses a cutting device for a circuit board. Two limiting grooves penetrate through the interior of a cutting table, supporting legs are fixedly connected to the four corners of the bottom of the cutting table, a cutting groove is formed in the top of the cutting table, and dust collecting boxes are fixedly connected to the front surface and the rear surface of the cutting table; a displacement mechanism is installed above the cutting table, a supporting table is fixedly connected to one side of the cutting table, a sliding groove is formed in the supporting table in a penetrating mode, and a cutting mechanism is installed on the supporting table. The dust collector can drive multiple sets of fan blades to rotate through the meshing effect of a third straight gear and a third small gear, dust generated during cutting is conveniently sucked into the dust collection box, the dust is blocked through a filter screen, dust diffusion is prevented, the manual suction probability is reduced, and the working efficiency is improved. According to the cutting device, displacement, cutting and dust removal of the circuit board can be completed only through one set of second servo motors, an additional power source is not needed, and more energy is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board cutting, and specifically to a cutting device for circuit boards and a cutting method thereof. Background Technique

[0002] Circuit boards have a wide range of applications in people's daily lives and can be used in the production of electronic watches, mobile phones, electrical appliances, etc. They can miniaturize and visualize circuits and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layouts. In order to better apply circuit boards to the production of products of different sizes, circuit boards often need to be cut into different sizes. Traditional circuit boards generate a large amount of dust during cutting. These dusts contain certain metal particles (such as lead, cadmium, mercury, etc.), glass fibers, flame retardants (such as brominated compounds), and epoxy resins. If the dust is not cleaned in time, it will cause damage to the bodies of workers. Summary of the Invention

[0003] The purpose of the present invention is to provide a cutting device for circuit boards and a cutting method thereof to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A cutting device for circuit boards includes a cutting table. Two limiting grooves penetrate through the inside of the cutting table, and support legs are fixedly connected to the four corners at the bottom of the cutting table. A cutting groove is opened at the top of the cutting table, and dust collection boxes are fixedly connected to the front and back surfaces of the cutting table. A displacement mechanism is installed above the cutting table. A support table is fixedly connected to one side of the cutting table. A chute penetrates through the inside of the support table, and a material cutting mechanism is installed on the support table;

[0005] The displacement mechanism includes a first baffle, an adjustment plate, and a mounting seat. A first servo motor is fixedly connected to the first baffle. The driving end of the first servo motor penetrates through the first baffle and is fixedly connected to a lead screw. One end of the lead screw is rotatably connected to a second baffle through a bearing, and an adjustment plate is sleeved on the outside of the lead screw in a threaded manner. Two limiting rods are fixedly connected to the top of the adjustment plate. The top ends of the limiting rods are fixedly connected to a mounting seat, and a fastening seat is fixedly connected to the top of the mounting seat;

[0006] The material cutting mechanism includes a first placement plate, a second placement plate, and a threaded rod. A second servo motor is fixedly connected to the first placement plate. The driving end of the second servo motor penetrates through the first placement plate and is fixedly connected to a first worm. A second worm is installed on the same side as the first worm. Worms are engaged with both the first worm and the second worm. A third straight gear is fixedly connected to the worm. A stainless steel plate is rotatably connected to the third straight gear through a bearing. One end of the second worm is rotatably connected to a second placement plate through a bearing.

[0007] Optionally, a cylinder is fixedly connected to the fastening seat. The telescopic end of the cylinder penetrates through the fastening seat and is fixedly connected to a toothed plate. Two fixing blocks are fixedly connected to the top of the mounting seat. A guide rod is fixedly connected between the two fixing blocks. A first rack and a second rack are sleeved outside the guide rod. A first clamping plate is fixedly connected to the first rack, and a second clamping plate is fixedly connected to the second rack. A first spur gear is meshed with the first rack. A first pinion is fixedly connected to the bottom of the first spur gear. A second spur gear is meshed with the second rack. A second pinion is fixedly connected to the bottom of the second spur gear.

[0008] Optionally, the toothed plate is meshed with the first pinion and the second pinion. The lengths of the first rack and the second rack are equal. The bottom of the first pinion is rotatably connected to the top of the mounting seat through a bearing. The bottom of the second pinion is rotatably connected to the top of the mounting seat through a bearing.

[0009] Optionally, the limiting rod is slidably connected to the inside of the limiting groove. Both the first baffle and the second baffle are fixedly connected to the bottom of the cutting table.

[0010] Optionally, a threaded rod is fixedly connected to the connection part of the first worm and the second worm. A lock block is threadedly sleeved outside the threaded rod. An anti - detachment block is fixedly connected to the lock block. A first transmission shaft penetrates through the anti - detachment block. The anti - detachment block and the first transmission shaft are rotatably connected through a bearing. A dust collector is installed above the anti - detachment block. A fourth spur gear and a fourth pinion are fixedly sleeved at one end of the first transmission shaft. The fourth spur gear and the fourth pinion are fixedly connected. A third rack is meshed with the bottom of the fourth pinion. A round rod is rotatably connected to the anti - detachment block through a bearing. A fifth pinion is fixedly sleeved outside the round rod. One end of the round rod is fixedly connected to a cutting wheel. The cutting wheel is located inside the cutting groove. A scraping plate is fixedly connected to the bottom of the anti - detachment block.

[0011] Optionally, the dust collector includes a dust collection box, a dust suction port and a dust discharge port. A dust suction port is fixedly communicated with one side of the dust collection box, and a dust discharge port is fixedly communicated with the other side of the dust collection box. Mounting frames are fixedly connected inside both the dust suction port and the dust discharge port. A second transmission shaft penetrates through the mounting frames. A third pinion is fixedly sleeved at one end of the second transmission shaft. A plurality of groups of fan blades are annularly fixedly connected to the outside of the second transmission shaft. A filter screen is fixedly connected inside the dust collection box.

[0012] Optionally, the second transmission shaft and the mounting frame are rotatably connected through a bearing. The second transmission shaft penetrates through the filter screen. The dust collector is fixedly connected to the top of the support table. A third spur gear is meshed with the third pinion. A stainless steel plate is fixedly connected to the bottom of the dust discharge port.

[0013] Optionally, the anti - detachment block is of an "H" - shaped structure and is slidably connected to the inside of the chute.

[0014] Optionally, both the first storage plate and the second storage plate are fixedly connected to the support platform, the third rack is fixedly connected to the support platform, the cutting wheel is located inside the scraping plate, and the scraping plate is slidably connected to the inner wall of the cutting groove.

[0015] A cutting method for a circuit board specifically includes the following steps:

[0016] S1. Place the circuit board between the first clamping plate and the second clamping plate. After the cylinder is started, it can drive the first clamping plate and the second clamping plate to move relatively to complete the clamping of the circuit board.

[0017] S2. Control the first servo motor to drive the lead screw to rotate. Through the rotation of the lead screw, the mounting seat and the clamped circuit board are moved directly above the cutting groove.

[0018] S3. Utilize the second servo motor to drive the fourth pinion to engage with the third rack. Utilize the engagement of the fourth pinion and the third rack to drive the anti - detachment block and the rotating cutting wheel to move to complete the cutting of the circuit board. During cutting, the meshing action of the first worm, the second worm, and the worm gear can drive the third pinion to rotate. The rotation of the third pinion, the second transmission shaft, and multiple groups of fan blades facilitates the inhalation of dust generated during cutting to prevent dust diffusion.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. After the cylinder shortens, it can drive the toothed plate to move leftward. The continuous leftward movement of the toothed plate can drive the first pinion and the second pinion to rotate in opposite directions, and then drive the first straight gear and the second straight gear fixed to them to rotate in opposite directions. After the first straight gear and the second straight gear rotate in opposite directions, they can drive the first rack and the second rack to move relatively, and then drive the first clamping plate and the second clamping plate to move relatively to complete the clamping of the circuit board. The displacement mechanism can quickly clamp the circuit board, shorten the clamping time, and at the same time can quickly move the clamped circuit board to the cutting area for cutting, which is beneficial to improving the cutting efficiency of the circuit board.

[0021] 2. The cutting mechanism can drive the rotating cutting wheel to move back and forth, which is convenient for quickly cutting the circuit board. When the cutting is completed, the second servo motor stops running. At this time, the cutting wheel will not rotate, preventing the operator from accidentally touching the cutting wheel after cutting is completed, reducing the safety hazard. When the cutting wheel rotates, it can also drive the scraping plate to move back and forth, which is convenient for cleaning the dust and impurities falling into the cutting groove, reducing the difficulty of manual cleaning.

[0022] 3. The dust collector can drive the rotation of multiple groups of fan blades through the meshing action of the third straight gear and the third pinion, which is convenient for inhaling the dust generated during cutting into the dust collection box and blocking the dust through the filter screen to prevent dust diffusion and reduce the probability of manual inhalation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. 1 is a schematic view of the overall structure of a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0024] Figure 2 FIG. 2 is a bottom view of a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0025] Figure 3 FIG. 3 is a schematic view of the structure of a displacement mechanism in a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0026] Figure 4 FIG. 4 is a schematic view of the structure of a first pinion and a second pinion in a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0027] Figure 5 FIG. 5 is a schematic view of the structure of a material cutting mechanism in a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0028] Figure 6 FIG. 6 is a schematic view of the structure of a dust collector in a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0029] Figure 7 FIG. 7 is a schematic view of the structure of a fourth pinion in a cutting device and a cutting method thereof for a circuit board according to the present invention;

[0030] Figure 8 FIG. 8 is a schematic view of the structure of a scraping plate in a cutting device and a cutting method thereof for a circuit board according to the present invention.

[0031] In the figure: 1. Cutting table; 11. Limit groove; 12. Support leg; 13. Cutting groove; 14. Dust collection box; 2. Displacement mechanism; 21. First baffle; 211. First servo motor; 212. Lead screw; 213. Second baffle; 22. Adjusting plate; 221. Limit rod; 23. Mounting seat; 231. Fastening seat; 232. Cylinder; 233. Rack; 24. Fixed block; 25. Guide rod; 251. First rack; 252. Second rack; 253. First clamping plate; 254. Second clamping plate; 26. First spur gear; 27. First pinion; 28. Second spur gear; 29. Second pinion; 3. Support table; 31. Slide groove; 4. Material cutting mechanism; 41. First placing plate; 411. Second servo motor; 412. First worm; 413. Second worm; 414. Worm gear; 415. Third spur gear; 416. Stainless steel plate; 42. Second placing plate; 43. Threaded rod; 431. Lock block; 44. Anti - detachment block; 441. First transmission shaft; 45. Dust collector; 451. Dust collection box; 452. Dust suction port; 453. Dust discharge port; 454. Mounting frame; 455. Second transmission shaft; 456. Third pinion; 457. Fan blade; 458. Filter screen; 46. Fourth spur gear; 47. Fourth pinion; 48. Third rack; 49. Round rod; 491. Fifth pinion; 492. Cutting wheel; 493. Scraping plate. Detailed implementation mode

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 8 , the present invention provides a cutting device for circuit boards, including a cutting table 1. Two limit grooves 11 penetrate through the inside of the cutting table 1, and support legs 12 are fixedly connected to the four corners of the bottom of the cutting table 1. A cutting groove 13 is opened on the top of the cutting table 1, and dust collection boxes 14 are fixedly connected to the front and rear surfaces of the cutting table 1. A displacement mechanism 2 is installed above the cutting table 1, a support table 3 is fixedly connected to one side of the cutting table 1, a slide groove 31 penetrates through the inside of the support table 3, and a material cutting mechanism 4 is installed on the support table 3.

[0034] The displacement mechanism 2 includes a first baffle 21, an adjustment plate 22 and a mounting seat 23. A first servo motor 211 is fixedly connected to the first baffle 21. The driving end of the first servo motor 211 penetrates through the first baffle 21 and is fixedly connected with a lead screw 212. One end of the lead screw 212 is rotatably connected to a second baffle 213 through a bearing. An adjustment plate 22 is sleeved on the outer thread of the lead screw 212. Two limit rods 221 are fixedly connected to the top of the adjustment plate 22. The top ends of the limit rods 221 are fixedly connected to a mounting seat 23. A fastening seat 231 is fixedly connected to the top of the mounting seat 23. A cylinder 232 is fixedly connected to the fastening seat 231. The telescopic end of the cylinder 232 penetrates through the fastening seat 231 and is fixedly connected with a toothed plate 233. Two fixing blocks 24 are fixedly connected to the top of the mounting seat 23. A guide rod 25 is fixedly connected between the two fixing blocks 24. A first rack 251 and a second rack 252 are sleeved on the outer part of the guide rod 25. A first clamping plate 253 is fixedly connected to the first rack 251. A second clamping plate 254 is fixedly connected to the second rack 252. A first spur gear 26 is meshed with the first rack 251. A first pinion 27 is fixedly connected to the bottom of the first spur gear 26. A second spur gear 28 is meshed with the second rack 252. A second pinion 29 is fixedly connected to the bottom of the second spur gear 28. The toothed plate 233 is meshed with the first pinion 27, and the toothed plate 233 is meshed with the second pinion 29. The lengths of the first rack 251 and the second rack 252 are equal. The bottom of the first pinion 27 is rotatably connected to the top of the mounting seat 23 through a bearing. The bottom of the second pinion 29 is rotatably connected to the top of the mounting seat 23 through a bearing. The limit rods 221 are slidably connected to the inside of the limit grooves 11. Both the first baffle 21 and the second baffle 213 are fixedly connected to the bottom of the cutting table 1. After the cylinder 232 shortens, it can drive the toothed plate 233 to move leftward. By continuously moving the toothed plate 233 leftward, it can drive the first pinion 27 and the second pinion 29 to rotate in opposite directions, and then drive the first spur gear 26 and the second spur gear 28 fixed to them to rotate in opposite directions. After the first spur gear 26 and the second spur gear 28 rotate in opposite directions, they can drive the first rack 251 and the second rack 252 to move relatively, and then drive the first clamping plate 253 and the second clamping plate 254 to move relatively to complete the clamping of the circuit board. The displacement mechanism 2 can quickly clamp the circuit board, shorten the clamping time, and at the same time quickly move the clamped circuit board to the cutting area for cutting, which is beneficial to improving the cutting efficiency of the circuit board.

[0035] The cutting mechanism 4 includes a first placement plate 41, a second placement plate 42, and a threaded rod 43. A second servo motor 411 is fixedly connected to the first placement plate 41. The driving end of the second servo motor 411 penetrates through the first placement plate 41 and is fixedly connected to a first worm 412. A second worm 413 is installed on the same side of the first worm 412. Worm wheels 414 are engaged with both the first worm 412 and the second worm 413. A third spur gear 415 is fixedly connected to the worm wheel 414. A stainless steel plate 416 is rotatably connected to the third spur gear 415 through a bearing. One end of the second worm 413 is rotatably connected to the second placement plate 42 through a bearing. A threaded rod 43 is fixedly connected to the connection part of the first worm 412 and the second worm 413. A lock block 431 is sleeved on the outer thread of the threaded rod 43. An anti - detachment block 44 is fixedly connected to the lock block 431. A first transmission shaft 441 penetrates through the anti - detachment block 44. The anti - detachment block 44 and the first transmission shaft 441 are rotatably connected through a bearing. A dust collector 45 is installed above the anti - detachment block 44. A fourth spur gear 46 and a fourth pinion 47 are fixedly sleeved on one end of the first transmission shaft 441. The fourth spur gear 46 and the fourth pinion 47 are fixedly connected. A third rack 48 is engaged with the bottom of the fourth pinion 47. A round rod 49 is rotatably connected to the anti - detachment block 44 through a bearing. A fifth pinion 491 is fixedly sleeved on the outer part of the round rod 49. One end of the round rod 49 is fixedly connected to a cutting wheel 492. The cutting wheel 492 is located inside the cutting groove 13. A scraping plate 493 is fixedly connected to the bottom of the anti - detachment block 44. The anti - detachment block 44 is of an "H" - shaped structure and is slidably connected inside the sliding groove 31. Both the first placement plate 41 and the second placement plate 42 are fixedly connected to the support platform 3. The third rack 48 is fixedly connected to the support platform 3. The cutting wheel 492 is located inside the scraping plate 493. The scraping plate 493 is slidably connected to the inner wall of the cutting groove 13. The cutting mechanism 4 can drive the rotating cutting wheel 492 to move back and forth, facilitating the rapid cutting of the circuit board. When the cutting is completed, the second servo motor 411 stops operating. At this time, the cutting wheel 492 will not rotate, preventing the staff from accidentally touching the cutting wheel 492 after the cutting is completed and reducing the safety hazard. While the cutting wheel 492 rotates, it can also drive the scraping plate 493 to move back and forth, facilitating the cleaning of the dust and impurities falling into the cutting groove 13 and reducing the difficulty of manual cleaning.

[0036] The dust collector 45 includes a dust collection box 451, a dust suction port 452, and a dust discharge port 453. One side of the dust collection box 451 is fixedly communicated with the dust suction port 452, and the other side of the dust collection box 451 is fixedly communicated with the dust discharge port 453. Mounting frames 454 are fixedly connected inside both the dust suction port 452 and the dust discharge port 453. A second transmission shaft 455 passes through the inside of the mounting frame 454. One end of the second transmission shaft 455 is fixedly sleeved with a third small gear 456, and multiple groups of fan blades 457 are annularly and fixedly connected to the outer part of the second transmission shaft 455. A filter screen 458 is fixedly connected inside the dust collection box 451. The second transmission shaft 455 and the mounting frame 454 are rotationally connected through bearings. The second transmission shaft 455 passes through the filter screen 458. The dust collector 45 is fixedly connected to the top of the support platform 3. The third straight gear 415 meshes with the third small gear 456. The stainless steel plate 416 is fixedly connected to the bottom of the dust discharge port 453. Through the meshing of the third straight gear 415 and the third small gear 456, the dust collector 45 can drive the rotation of multiple groups of fan blades 457, facilitating the suction of the dust generated during cutting into the dust collection box 451 and blocking the dust through the filter screen 458 to prevent the dust from spreading and reducing the probability of manual inhalation.

[0037] A cutting method for a circuit board specifically includes the following steps:

[0038] S1. Place the circuit board between the first clamping plate 253 and the second clamping plate 254. After starting the air cylinder 232, it can drive the first clamping plate 253 and the second clamping plate 254 to move relatively to complete the clamping of the circuit board.

[0039] S2. Control the first servo motor 211 to drive the lead screw 212 to rotate, and move the mounting seat 23 and the clamped circuit board to directly above the cutting groove 13 through the rotation of the lead screw 212.

[0040] S3. Utilize the second servo motor 411 to drive the fourth small gear 47 to mesh with the third rack 48, and drive the anti - detachment block 44 and the rotating cutting wheel 492 to move through the meshing of the fourth small gear 47 and the third rack 48 to complete the cutting of the circuit board. During cutting, the meshing of the first worm 412, the second worm 413, and the worm gear 414 can drive the third small gear 456 to rotate. With the rotation of the third small gear 456, the second transmission shaft 455, and multiple groups of fan blades 457, it is convenient to suck the dust generated during cutting and prevent the dust from spreading.

[0041] Working principle: When using this device, place the circuit board to be cut between the first clamping plate 253 and the second clamping plate 254. Start the cylinder 232. The telescopic end of the cylinder 232 drives the toothed plate 233 to move leftward. The movement of the toothed plate 233 drives the first pinion 27 and the second pinion 29 to rotate in opposite directions, and then drives the first spur gear 26 and the second spur gear 28 to rotate in opposite directions. Through the meshing of the first rack 251 and the first spur gear 26 and the meshing of the second rack 252 and the second spur gear 28, the first rack 251 and the second rack 252 can move relative to each other along the guide rod 25, thereby pushing the first clamping plate 253 and the second clamping plate 254 to clamp the circuit board. The clamping mechanism is ingeniously designed, and through the linkage of the cylinder 232, the toothed plate 233, the first pinion 27, the second pinion 29, the first rack 251, the first spur gear 26, the second rack 252 and the second spur gear 28, fast and stable clamping is achieved, shortening the clamping time. Start the first servo motor 211 to drive the lead screw 212 to rotate. The adjusting plate 22 is sleeved on the lead screw 212 through a thread and drives the limit rod 221 to slide along the limit groove 11, thereby horizontally moving the mounting seat 23 and the clamped circuit board directly above the cutting groove 13. The cooperation of the limit groove 11 and the limit rod 221 ensures a smooth movement process and avoids deviation. Start the second servo motor 411 to drive the first worm 412 and the second worm 413 to rotate. Through the meshing of the worm gear 414 and the third spur gear 415, drive the third pinion 456 to rotate, and then drive the second transmission shaft 455 and multiple groups of fan blades 457 to rotate. Start the dust collection function. The rotation of the first worm 412 and the second worm 413 drives the anti-disengagement block 44 to move along the sliding groove 31 through the threaded rod 43 and the locking block 431. The round rod 49 on the anti-disengagement block 44 drives the cutting wheel 492 to rotate and move along the third rack 48 to complete the cutting of the circuit board. The negative pressure generated by the rotation of the fan blades 457 sucks the cutting dust into the dust collection box 451 through the dust suction port 452. The dust is blocked by the filter screen 458, and the clean air is discharged from the dust exhaust port 453. When the cutting wheel 492 moves, the scraping plate 493 synchronously clears the residual dust and debris in the cutting groove 13. After the cutting is completed, the second servo motor 411 stops running, and the cutting wheel 492 immediately stops rotating to avoid the risk of accidental touch. Cutting and dust collection are carried out synchronously. Through the mechanical linkage of the first worm 412, the second worm 413, the worm gear 414, the third spur gear 415 and the third pinion 456, efficient dust collection is achieved. This cutting device only requires a set of second servo motors 411 to complete the displacement, cutting and dust removal of the circuit board, without the need for an additional power source, and is more energy-saving.

[0042] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for a circuit board, comprising a cutting table (1), characterized in that, The interior of the cutting table (1) is penetrated by two limiting grooves (11), and support legs (12) are fixedly connected to the four corners of the bottom of the cutting table (1). A cutting groove (13) is formed in the top of the cutting table (1), and dust collection boxes (14) are fixedly connected to the front and rear surfaces of the cutting table (1). A displacement mechanism (2) is installed above the cutting table (1). A support table (3) is fixedly connected to one side of the cutting table (1). A chute (31) penetrates through the interior of the support table (3), and a material cutting mechanism (4) is installed on the support table (3); The displacement mechanism (2) includes a first baffle (21), an adjusting plate (22), and a mounting seat (23). A first servo motor (211) is fixedly connected to the first baffle (21). The driving end of the first servo motor (211) penetrates through the first baffle (21) and is fixedly connected to a lead screw (212). One end of the lead screw (212) is rotatably connected to a second baffle (213) through a bearing, and an adjusting plate (22) is sleeved on the outer thread of the lead screw (212). Two limiting rods (221) are fixedly connected to the top of the adjusting plate (22). The top ends of the limiting rods (221) are fixedly connected to a mounting seat (23), and a fastening seat (231) is fixedly connected to the top of the mounting seat (23); The material cutting mechanism (4) includes a first placement plate (41), a second placement plate (42), and a threaded rod (43). A second servo motor (411) is fixedly connected to the first placement plate (41). The driving end of the second servo motor (411) penetrates through the first placement plate (41) and is fixedly connected to a first worm (412). A second worm (413) is installed on the same side of the first worm (412). Worms (414) are engaged with both the first worm (412) and the second worm (413). A third straight gear (415) is fixedly connected to the worm (414). A stainless steel plate (416) is rotatably connected to the third straight gear (415) through a bearing. One end of the second worm (413) is rotatably connected to a second placement plate (42) through a bearing.

2. The cutting device for a circuit board according to claim 1, characterized in that, A cylinder (232) is fixedly connected to the fastening seat (231). The telescopic end of the cylinder (232) penetrates through the fastening seat (231) and is fixedly connected to a toothed plate (233). Two fixing blocks (24) are fixedly connected to the top of the mounting seat (23). A guide rod (25) is fixedly connected between the two fixing blocks (24). A first rack (251) and a second rack (252) are sleeved on the outer part of the guide rod (25). A first clamping plate (253) is fixedly connected to the first rack (251). A second clamping plate (254) is fixedly connected to the second rack (252). A first straight gear (26) is engaged with the first rack (251). A first small gear (27) is fixedly connected to the bottom of the first straight gear (26). A second straight gear (28) is engaged with the second rack (252). A second small gear (29) is fixedly connected to the bottom of the second straight gear (28).

3. The cutting device for a circuit board according to claim 2, wherein, The toothed plate (233) meshes with the first pinion (27), the toothed plate (233) meshes with the second pinion (29), the lengths of the first rack (251) and the second rack (252) are equal, the bottom of the first pinion (27) is rotatably connected to the top of the mounting seat (23) through a bearing, and the bottom of the second pinion (29) is rotatably connected to the top of the mounting seat (23) through a bearing.

4. The cutting device for a circuit board according to claim 2, characterized in that The limiting rod (221) is slidably connected inside the limiting groove (11), and the first baffle (21) and the second baffle (213) are both fixedly connected to the bottom of the cutting table (1).

5. A cutting device for a circuit board according to claim 1, characterized in that, A threaded rod (43) is fixedly connected at the connection of the first worm (412) and the second worm (413). A locking block (431) is sleeved on the outer thread of the threaded rod (43). An anti - detachment block (44) is fixedly connected to the locking block (431). A first transmission shaft (441) penetrates through the anti - detachment block (44). The anti - detachment block (44) and the first transmission shaft (441) are rotatably connected through a bearing. A dust collector (45) is installed above the anti - detachment block (44). One end of the first transmission shaft (441) is fixedly sleeved with a fourth spur gear (46) and a fourth pinion (47). The fourth spur gear (46) and the fourth pinion (47) are fixedly connected. The bottom of the fourth pinion (47) meshes with a third rack (48). A round rod (49) is rotatably connected to the anti - detachment block (44) through a bearing. A fifth pinion (491) is fixedly sleeved on the outer part of the round rod (49). One end of the round rod (49) is fixedly connected with a cutting wheel (492). The cutting wheel (492) is located inside the cutting groove (13). A scraping plate (493) is fixedly connected to the bottom of the anti - detachment block (44).

6. The cutting device for a circuit board according to claim 5, characterized in that, The dust collector (45) includes a dust collection box (451), a dust suction port (452) and a dust discharge port (453). A dust suction port (452) is fixedly communicated with one side of the dust collection box (451), and a dust discharge port (453) is fixedly communicated with the other side of the dust collection box (451). Mounting frames (454) are fixedly connected inside the dust suction port (452) and the dust discharge port (453). A second transmission shaft (455) penetrates through the mounting frames (454). One end of the second transmission shaft (455) is fixedly sleeved with a third pinion (456). A plurality of groups of fan blades (457) are annularly fixedly connected to the outer part of the second transmission shaft (455). A filter screen (458) is fixedly connected inside the dust collection box (451).

7. A cutting device for a circuit board according to claim 6, characterized in that, The second transmission shaft (455) and the mounting frame (454) are rotatably connected through a bearing. The second transmission shaft (455) penetrates through the filter screen (458). The dust collector (45) is fixedly connected to the top of the support table (3). The third spur gear (415) meshes with the third pinion (456). A stainless steel plate (416) is fixedly connected to the bottom of the dust discharge port (453).

8. A cutting device for a circuit board according to claim 5, characterized in that, The anti - detachment block (44) is of an "H" - shaped structure, and the anti - detachment block (44) is slidably connected inside the chute (31).

9. A cutting device for a circuit board according to claim 5, characterized in that, The first storage plate (41) and the second storage plate (42) are both fixedly connected to the support platform (3). The third rack (48) is fixedly connected to the support platform (3). The cutting wheel (492) is located inside the scraping plate (493), and the scraping plate (493) is slidably connected to the inner wall of the cutting groove (13).

10. A cutting method for a circuit board, according to a cutting device for a circuit board described in claim 9, characterized in that, Specifically, it includes the following steps: S1. Place the circuit board between the first clamping plate (253) and the second clamping plate (254). After starting the air cylinder (232), it can drive the first clamping plate (253) and the second clamping plate (254) to move relatively to complete the clamping of the circuit board. S2. Control the first servo motor (211) to drive the lead screw (212) to rotate. Through the rotation of the lead screw (212), the mounting seat (23) and the clamped circuit board are moved directly above the cutting groove (13). S3. Use the second servo motor (411) to drive the fourth pinion (47) to engage with the third rack (48). Use the engagement of the fourth pinion (47) and the third rack (48) to drive the anti - detachment block (44) and the rotating cutting wheel (492) to move to complete the cutting of the circuit board. During cutting, the meshing action of the first worm (412), the second worm (413) and the worm gear (414) can drive the third pinion (456) to rotate. The rotation of the third pinion (456), the second transmission shaft (455) and multiple groups of fan blades (457) facilitates the inhalation of dust generated during cutting to prevent dust diffusion.

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