Automobile PCB cutting device and method with positioning function

Abstract

The invention discloses an automobile PCB cutting device and method with a positioning function, and belongs to the technical field of PCB substrate cutting. The automobile PCB cutting device with the positioning function comprises a supporting table and a cutting table fixedly installed on the surface of the supporting table, a printed circuit board to be cut is placed on the surface of the cutting table, a laser cutter used for cutting the printed circuit board is arranged above the printed circuit board, and an L-shaped frame is fixedly installed on the side surface of the cutting table. Compared with traditional partial laser cutting equipment, the automobile PCB cutting device with the positioning function has the advantages that the height of a laser cutter is adjusted while a threaded rod moves downwards in a screwing mode to clamp and position a printed circuit board, the cutting distance is adjusted without manual intervention again, and the cutting efficiency is improved. The operation steps are simple, time and labor are saved, the cutting speed of the printed circuit board is increased, and then the cutting efficiency of the printed circuit board is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB substrate cutting, and more specifically, to an automotive PCB cutting device and method with a positioning function. Background Art

[0002] As a core component of electronic devices, PCB substrates have a wide range of application scenarios, covering multiple industries from traditional electronic products to emerging technology fields.

[0003] Chinese Patent Application No. CN202010933495.9 discloses a cutting machine for PCB substrates. A workbench is connected in the middle of the support frame, and a protective cover is connected to the lower end face of the workbench. The above invention has a fixing device composed of a base, an upper rotating plate, a lower rotating plate, a placement plate, a limiting device, a slot, and rotating rollers. The rotating rollers can drive the PCB board on the surface to rotate well, so as to drive the PCB board into the cutting groove. The rotating cutting tool can cut the PCB board well, so that the PCB board can reach the required shape and ensure the processing accuracy of the PCB board. The above invention has a limiting device composed of a blocking rod, a rotating groove, a rotating disk, and an outer frame. The rotating disk can drive the blocking rod to rotate well. The blocking rod rotates inside the rotating groove, and the rotating blocking rod can block well above the PCB board, thereby restricting the position of the PCB board and ensuring that the PCB board can smoothly enter the cutting groove, so that the cutting tool can smoothly cut the PCB board.

[0004] Some traditional PCB boards are often cut by a laser cutter. During the cutting process of the PCB board, the sheet material needs to be fixed in advance by a mechanical fixture, and then manual intervention is required to adjust the vertical distance between the laser cutter and the PCB board to ensure that the cutting distance between the laser cutter and the PCB board is within the range to prevent the generation of carbon black at the cutting trajectory of the PCB board. Since the thickness of the PCB board is different, the cutting distance between the laser cutter and the PCB board is also different. The process of adjusting the cutting distance between the laser cutter and the PCB board is cumbersome, time-consuming, and laborious. It is impossible to directly adjust the laser cutter during the clamping and positioning process of the PCB board, which not only affects the cutting speed of the PCB board but also affects the cutting efficiency of the PCB board. Summary of the Invention

[0005] The purpose of the present invention is to provide an automotive PCB cutting device with a positioning function to solve the problems raised in the above background art: To achieve the above purpose, the present invention provides the following technical solutions: Automobile PCB cutting device with positioning function, including a support table and a cutting table fixedly installed on its surface. A printed circuit board to be cut is placed on the surface of the cutting table. Above the printed circuit board, there is a laser cutter for cutting it. A L-shaped frame is fixedly installed on the side surface of the cutting table. A screw rod that can be screwed downward is correspondingly arranged on the end surface of the L-shaped frame. A support seat is fixedly installed on the surface of the L-shaped frame. A rotating shaft is correspondingly rotatably connected to the end surface of the support seat. Two cross-shaped insertion rods for driving the screw rod to move are respectively fixedly installed on the bottom surfaces of the two rotating shafts. A gear is fixedly installed on the top surface of the rotating shaft. A rack meshing with the gear is slidably connected above the support seat. Two ramp surfaces are correspondingly formed on the surface of the rack. Mounting frames are correspondingly fixedly installed on the side surfaces of the support seat. Guide rods are slidably connected to the surfaces of the two mounting frames. One ends of the two guide rods are respectively in contact with the two ramp surfaces. A trapezoidal block is fixedly installed at one end of the guide rod. A lifting frame that can move vertically up and down is arranged on one side of the two trapezoidal blocks. A spline rod is rotatably connected to the inner side surface of the top of the lifting frame. A spline wheel that can rotate and slide is arranged on the surface of the spline rod. While the screw rod is screwed downward to clamp and position the printed circuit board, the lifting frame moves upward to adjust the height of the laser cutter.

[0006] Preferably, cross grooves matching the cross-shaped insertion rods are formed on the top surfaces of the two screw rods. The cross-shaped insertion rods are inserted into the cross grooves. A first spring is elastically connected between the cross-shaped insertion rod and the cross groove. One end of the first spring is fixedly connected to the bottom surface of the cross-shaped insertion rod, and the other end of the first spring is fixedly connected to the inner bottom surface of the cross groove. Rubber pads are fixedly installed on the bottom surfaces of the two screw rods and the surface of the cutting table. After the printed circuit board is clamped and positioned, the two pairs of rubber pads are in contact with the surface and the bottom surface of the printed circuit board. A threaded ring threadedly connected to the screw rod is fixedly installed on the bottom surface of the L-shaped frame.

[0007] Preferably, a support frame is fixedly installed on the side surface of the L-shaped frame. A threaded tube is threadedly connected to the surface of the support frame. A fixed ring is fixedly installed on one end surface of the rack. A rotating block is fixedly installed on one end surface of the threaded tube. The rotating block is rotatably connected to the fixed ring. A knob is fixedly installed on the other end surface of the threaded tube.

[0008] Preferably, a fixed frame is fixedly installed on the surface of the support seat. A moving block matching it is slidably connected inside the fixed frame. The top surface of the moving block is fixedly connected to the bottom surface of the rack. The rack is slidably connected to the fixed frame through the moving block. A second spring is elastically connected between the moving block and the fixed frame. One end of the second spring is fixedly connected to the moving block, and the other end of the second spring is fixedly connected to the inner wall of the fixed frame.

[0009] Preferably, sliding frames are fixedly installed on the surfaces of the two mounting frames. A slider matching the sliding frame is slidably connected inside the sliding frame. The slider is fixedly connected to the bottom surface of the trapezoidal block. A third spring is elastically connected between the slider and the sliding frame. One end of the third spring is fixedly connected to the slider, and the other end of the third spring is fixedly connected to the inner wall of the sliding frame.

[0010] Preferably, a vertical frame is fixedly installed on the surface of the support platform. Two support connecting frames are fixedly installed on the surface of the vertical frame corresponding to each other. The lifting frame is slidably connected to the support connecting frame. A roller is rotatably connected to the inner side surface of the bottom of the lifting frame. The roller contacts the surface of the trapezoidal block. A fixing plate is fixedly installed on the inner side surface of the lifting frame. A fourth spring is elastically connected between the fixing plate and the support connecting frame. One end of the fourth spring is fixedly connected to the surface of the fixing plate, and the other end of the fourth spring is fixedly connected to the support connecting frame.

[0011] Preferably, movable seats are arranged above the two spline wheels. A moving groove in contact with the spline wheel is formed on the bottom surface of the movable seat. Connecting frames are respectively fixedly installed between the laser cutter and the two movable seats. A mounting plate is arranged on one side of the vertical frame. A through vertical groove is formed on the surface of the mounting plate. A sliding seat matching the vertical groove is slidably connected inside the vertical groove. A micro telescopic device is fixedly installed on the surface of the sliding seat. A common fixing plate is fixedly installed between the two connecting frames. The telescopic end of the micro telescopic device is fixedly connected to the surface of the common fixing plate.

[0012] Preferably, a base is fixedly installed on the bottom surface of the support platform. A housing is fixedly installed on the surface of the base. A controller is fixedly installed on the surface of the housing. The controller is electrically connected to the micro telescopic device through a wire.

[0013] Preferably, a slot is formed on the inner side surface of the vertical frame. A lead screw is rotatably connected inside the slot. A movable block is threadedly connected to the surface of the lead screw. The movable block matches the slot. The surface of the movable block is fixedly connected to the mounting plate. A motor is fixedly installed on the side surface of the vertical frame. The output end of the motor is fixedly connected to the lead screw. The motor is electrically connected to the controller through a wire.

[0014] An automobile PCB cutting method with a positioning function includes the following steps: S1: First, place the printed circuit board on the surface of the cutting table with the left hand so that two corners of the printed circuit board are aligned with the rubber pads. Then, turn the knob with the right hand. The threaded tube follows the knob and moves outwardly into the support frame. At this time, the rotating block rotates within the fixed ring and pulls the fixed ring to move, driving the toothed plate to move. During the movement of the toothed plate, it drives the moving block to move inside the fixed frame, squeezing the second spring. The toothed plate drives two gears to rotate. The gears drive the rotating shaft and the cross-shaped insertion rod to rotate. The cross-shaped insertion rod drives the threaded rod to rotate. Since the threaded rod is threadedly connected to the threaded ring, at this time, the threaded rod moves downwardly into the support frame, stretching the first spring. The threaded rod's inward movement drives the rubber pad to clamp and position the printed circuit board. S2: While the toothed plate moves, it drives two inclined planes to move and squeeze the guide rod. The guide rod drives the trapezoidal block to move and squeeze the roller. During the movement of the trapezoidal block, it drives the slider to slide inside the carriage, stretching the third spring. After being squeezed by the trapezoidal block, the roller moves upward, driving the lifting frame to move upward. The lifting frame moves upward, driving the spline rod and the spline wheel to move upward, compressing the fourth spring. S3: The spline wheel moves upward, lifting the moving seat, driving the connecting frame and the laser cutter to move upward. After the threaded rod moves downwardly into the support frame to clamp and position the printed circuit board, at the same time, the upward movement of the laser cutter is completed. The laser cutter operates to cut the printed circuit board.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1) When the automotive PCB cutting device with a positioning function is in use, while the threaded rod moves downwardly into the support frame to drive the rubber pad to clamp and position the printed circuit board, the toothed plate moves, driving two inclined planes to move and squeeze the guide rod. The guide rod drives the trapezoidal block to move and squeeze the roller. After being squeezed by the trapezoidal block, the roller moves upward, driving the lifting frame to move upward. The lifting frame moves upward, driving the spline rod and the spline wheel to move upward. The spline wheel moves upward, lifting the moving seat, driving the connecting frame and the laser cutter to move upward. Compared with traditional partial laser cutting equipment, this laser cutting device realizes the clamping and positioning of the printed circuit board by the downward movement of the threaded rod while completing the height adjustment of the laser cutter, without the need for manual intervention to adjust the cutting distance again. This operation step is simple, time-saving, and labor-saving, improving the cutting speed of the printed circuit board and thus enhancing the cutting efficiency of the printed circuit board.

[0016] 2) When the automotive PCB cutting device with positioning function is in use, when the printed circuit board is relatively thin, the screw rod moves downward and rotates in a larger distance, and at this time, the laser cutter moves upward in a larger distance. When the printed circuit board is relatively thick, the screw rod moves downward and rotates in a smaller distance, and the laser cutter moves upward in a smaller distance. The cutting distance between the relatively thin printed circuit board and the laser cutter is larger than that between the relatively thick printed circuit board and the laser cutter. When the laser cutter cuts the relatively thin printed circuit board, it prevents the occurrence of carbon black at the cutting position on the surface of the printed circuit board, ensuring the cutting quality of the laser cutter for the printed circuit board.

[0017] 3) When the automotive PCB cutting device with positioning function is in use, the lifting frame moves upward, driving the spline rod and the spline wheel upward, so that the moving seat moves upward, driving the connecting frame and the laser cutter upward. When cutting the position on the surface of the printed circuit board that needs to be cut, the movable block moves in the slot, driving the mounting plate and the micro-expander. The micro-expander moves, driving the moving seat, the connecting frame and the laser cutter. During the movement of the moving seat, the spline wheel slides on the surface of the spline rod. The micro-expander extends, driving the co-fixing plate. The co-fixing plate moves, driving the connecting frame and the laser cutter. The connecting frame moves, driving the moving seat, so that the spline wheel rolls inside the moving slot. During the process of adjusting the height of the laser cutter and moving the laser cutter to the position to be cut, the spline wheel can rotate and slide on the surface of the spline rod, increasing the flexibility of the cutting device. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the position structure of the support table and the base of the present invention; Figure 3 is a schematic diagram of the position structure of the support table and the cutting table of the present invention; Figure 4 is a schematic diagram of the position structure of the gear and the toothed plate of the present invention; Figure 5 is a schematic diagram of the position structure of the toothed plate and the ramp surface of the present invention; Figure 6 is a schematic diagram of the separation structure of the cross-shaped insertion rod and the cross-shaped groove of the present invention; Figure 7 is a schematic diagram of the separation structure of the fixed frame and the moving block of the present invention; Figure 8 is a schematic diagram of the position structure of the connecting frame and the laser cutter of the present invention; Figure 9 is a schematic diagram of the position structure of the spline rod and the spline wheel of the present invention; Figure 10 is a schematic diagram of the separation structure of the spline wheel and the moving slot of the present invention; Figure 11 Schematic diagram of the position structure of the micro expander and the co-fixing plate of the present invention.

[0019] Explanation of the reference numerals in the figure: 1. Support table; 2. Cutting table; 3. Printed circuit board; 4. L-shaped frame; 5. Threaded rod; 6. Support seat; 7. Rotating shaft; 8. Cross-shaped inserting rod; 9. Gear; 10. Rack; 11. Sloping surface; 12. Mounting frame; 13. Guide rod; 14. Trapezoidal block; 15. Lifting frame; 16. Spline rod; 17. Spline wheel; 18. Laser cutter; 19. Cross slot; 20. First spring; 21. Rubber pad; 22. Threaded ring; 23. Support frame; 24. Threaded tube; 25. Fixed ring; 26. Rotating block; 27. Knob; 28. Fixed frame; 29. Moving block; 30. Second spring; 31. Sliding frame; 32. Slider; 33. Third spring; 34. Support connecting frame; 35. Roller; 36. Fixed plate; 37. Fourth spring; 38. Moving seat; 39. Moving slot; 40. Connecting frame; 41. Mounting plate; 42. Vertical slot; 43. Sliding seat; 44. Micro expander; 45. Co-fixing plate; 46. Base; 47. Outer shell; 48. Controller; 49. Vertical frame; 50. Groove; 51. Lead screw; 52. Movable block; 53. Motor. Detailed implementation manners

[0020] Example 1: Please refer to Figure 1 - Figure 11, an automotive PCB cutting device with a positioning function, including a support table 1 and a cutting table 2 fixedly installed on its surface. A printed circuit board 3 to be cut is placed on the surface of the cutting table 2. The printed circuit board 3 is a conventional PCB substrate in the prior art. Above the printed circuit board 3, there is a laser cutter 18 for cutting it. The laser cutter 18 is a conventional laser cutting device in the prior art. An L-shaped frame 4 is fixedly installed on the side surface of the cutting table 2. A screw rod 5 that can be screwed downward is correspondingly provided on the end surface of the L-shaped frame 4. A support seat 6 is fixedly installed on the surface of the L-shaped frame 4. A rotating shaft 7 is correspondingly rotatably connected to the end surface of the support seat 6. Cross-shaped insertion rods 8 for driving the screw rod 5 to move are respectively fixedly installed on the bottom surfaces of the two rotating shafts 7. A gear 9 is fixedly installed on the top surface of the rotating shaft 7. A toothed plate 10 meshing with the gear 9 is slidably connected above the support seat 6. Two ramp surfaces 11 are correspondingly provided on the surface of the toothed plate 10. The ramp surfaces 11 are provided to squeeze the guide rod 13. Mounting frames 12 are fixedly installed on the side surfaces of the support seat 6 correspondingly. Guide rods 13 are slidably connected to the surfaces of the two mounting frames 12. The guide rods 13 are provided to guide the movement of the trapezoidal blocks 14. One ends of the two guide rods 13 are respectively in contact with the two ramp surfaces 11. A trapezoidal block 14 is fixedly installed at one end of the guide rod 13. An elevating frame 15 that can move vertically up and down is provided on one side of the two trapezoidal blocks 14. A spline rod 16 is rotatably connected to the inner side surface of the top of the elevating frame 15. A spline wheel 17 that can rotate and slide is provided on the surface of the spline rod 16. While the screw rod 5 is screwed downward to clamp and position the printed circuit board 3, the elevating frame 15 moves upward to adjust the height of the laser cutter 18. When the printed circuit board 3 is thinner, the screw rod 5 is screwed downward with a larger movement distance. At this time, the laser cutter 18 moves upward with a larger distance. When the printed circuit board 3 is thicker, the screw rod 5 is screwed downward with a smaller movement distance, and the laser cutter 18 moves upward with a smaller distance. The cutting distance between the thinner printed circuit board 3 and the laser cutter 18 is larger than that between the thicker printed circuit board 3 and the laser cutter 18. When the laser cutter 18 cuts the thinner printed circuit board 3, it prevents the occurrence of carbon black at the cutting part on the surface of the printed circuit board 3, ensuring the cutting quality of the laser cutter 18 for the printed circuit board 3;When the printing circuit board 3 is clamped and positioned by the downward screwing movement of the threaded rod 5 with the rubber pad 21, the toothed plate 10 moves to drive the two inclined planes 11 to move and squeeze the guide rod 13. The guide rod 13 moves to drive the trapezoidal block 14 to move and squeeze the roller 35. After being squeezed by the trapezoidal block 14, the roller 35 moves upward to drive the lifting frame 15 to move upward. The lifting frame 15 moves upward to drive the spline rod 16 and the spline wheel 17 to move upward. The upward movement of the spline wheel 17 jacks up the moving seat 38 to drive the connecting frame 40 and the laser cutter 18 to move upward. Compared with traditional partial laser cutting equipment, this laser cutting device realizes the height adjustment of the laser cutter 18 while the threaded rod 5 screws downward to clamp and position the printing circuit board 3, without the need for manual intervention to adjust the cutting distance again. This operation step is simple, time-saving and labor-saving, improves the cutting speed of the printing circuit board 3, and thus improves the cutting efficiency of the printing circuit board 3.

[0021] Cross grooves 19 matching the cross pins 8 are formed on the top surfaces of the two threaded rods 5. The cross pins 8 and the cross grooves 19 are inserted into each other, and a first spring 20 is elastically connected between the cross pins 8 and the cross grooves 19. One end of the first spring 20 is fixedly connected to the bottom surface of the cross pin 8, and the other end of the first spring 20 is fixedly connected to the inner bottom surface of the cross groove 19. Rubber pads 21 are fixedly installed on the bottom surfaces of the two threaded rods 5 and the surface of the cutting table 2. After the threaded rod 5 clamps the printing circuit board 3, the rubber pad 21 can protect the surface of the printing circuit board 3. After the printing circuit board 3 is clamped and positioned, the two pairs of rubber pads 21 are in contact with the surface and the bottom surface of the printing circuit board 3. A threaded ring 22 threadedly connected to the threaded rod 5 is fixedly installed on the bottom surface of the L-shaped frame 4, and the cross pin 8 and the cross groove 19 will not be separated.

[0022] A support frame 23 is fixedly installed on the side surface of the L-shaped frame 4. A threaded tube 24 is threadedly connected to the surface of the support frame 23. A fixed ring 25 is fixedly installed on one end surface of the toothed plate 10. A rotating block 26 is fixedly installed on one end surface of the threaded tube 24. The rotating block 26 is rotatably connected to the fixed ring 25. A knob 27 is fixedly installed on the other end surface of the threaded tube 24. The threaded tube 24 screws outward from the support frame 23 following the knob 27. At this time, the rotating block 26 rotates in the fixed ring 25 and pulls the fixed ring 25 to move to drive the toothed plate 10 to move.

[0023] A fixing frame 28 is fixedly installed on the surface of the support base 6. A moving block 29 that matches it is slidably connected inside the fixing frame 28. The top surface of the moving block 29 is fixedly connected to the bottom surface of the toothed plate 10. The toothed plate 10 is slidably connected to the fixing frame 28 through the moving block 29. A second spring 30 is elastically connected between the moving block 29 and the fixing frame 28. One end of the second spring 30 is fixedly connected to the moving block 29, and the other end of the second spring 30 is fixedly connected to the inner wall of the fixing frame 28. The settings of the moving block 29 and the fixing frame 28 ensure the stability of the toothed plate 10 during movement.

[0024] Sliding frames 31 are fixedly installed on the surfaces of both mounting frames 12. A slider 32 that matches it is slidably connected inside the sliding frame 31. The slider 32 is fixedly connected to the bottom surface of the trapezoidal block 14. A third spring 33 is elastically connected between the slider 32 and the sliding frame 31. One end of the third spring 33 is fixedly connected to the slider 32, and the other end of the third spring 33 is fixedly connected to the inner wall of the sliding frame 31. The settings of the slider 32 and the sliding frame 31 ensure the stability of the trapezoidal block 14 during movement.

[0025] A vertical frame 49 is fixedly installed on the surface of the support platform 1. Two support connecting frames 34 are correspondingly fixedly installed on the surface of the vertical frame 49. The lifting frame 15 is slidably connected to the support connecting frame 34. A roller 35 is rotatably connected to the inner side surface of the bottom of the lifting frame 15. The roller 35 is in contact with the surface of the trapezoidal block 14. A fixing plate 36 is fixedly installed on the inner side surface of the lifting frame 15. A fourth spring 37 is elastically connected between the fixing plate 36 and the support connecting frame 34. One end of the fourth spring 37 is fixedly connected to the surface of the fixing plate 36, and the other end of the fourth spring 37 is fixedly connected to the support connecting frame 34. Due to the setting of the roller 35, when the trapezoidal block 14 moves and squeezes the roller 35, the roller 35 will roll along the inclined surface of the trapezoidal block 14, reducing the frictional damage of the trapezoidal block 14.

[0026] Usage steps of the present invention: When the automotive PCB cutting device with positioning function is in use, first place the printed circuit board 3 on the surface of the cutting table 2 with the left hand, aligning two corners of the printed circuit board 3 with the rubber pads 21. Then, turn the knob 27 with the right hand. The threaded tube 24 follows the knob 27 and moves into the outside of the support frame 23. At this time, the rotating block 26 rotates within the fixed ring 25 and pulls the fixed ring 25 to move, driving the toothed plate 10 to move. During the movement of the toothed plate 10, it drives the moving block 29 to move inside the fixed frame 28, squeezing the second spring 30. The toothed plate 10 drives the two gears 9 to rotate. The gears 9 drive the rotating shaft 7 and the cross-shaped insertion rod 8 to rotate. The cross-shaped insertion rod 8 drives the threaded rod 5 to rotate. Since the threaded rod 5 is threadedly connected to the threaded ring 22, at this time, the threaded rod 5 moves downward in a screwed-in motion, stretching the first spring 20. The screwed-in motion of the threaded rod 5 drives the rubber pad 21 to clamp and position the printed circuit board 3. At the same time as the toothed plate 10 moves, it drives the two inclined planes 11 to move and squeeze the guide rod 13. The guide rod 13 drives the trapezoidal block 14 to move and squeeze the roller 35. During the movement of the trapezoidal block 14, it drives the slider 32 to slide inside the carriage 31, stretching the third spring 33. After the roller 35 is squeezed by the trapezoidal block 14, it moves upward, driving the lifting frame 15 to move upward. The lifting frame 15 moves upward, driving the spline rod 16 and the spline wheel 17 to move upward, compressing the fourth spring 37. The upward movement of the spline wheel 17 lifts the moving seat 38, driving the connecting frame 40 and the laser cutter 18 to move upward (the housings of the moving seat 38, the connecting frame 40, and the laser cutter 18 are made of aluminum material). After the threaded rod 5 moves downward in a screwed-in motion to complete the clamping and positioning of the printed circuit board 3, at the same time, the upward movement of the laser cutter 18 is completed. The laser cutter 18 operates to cut the printed circuit board 3. When the printed circuit board 3 is thinner, the downward screwed-in motion distance of the threaded rod 5 is larger. At this time, the upward movement distance of the laser cutter 18 is larger. When the printed circuit board 3 is thicker, the downward screwed-in motion distance of the threaded rod 5 is smaller, and the upward movement distance of the laser cutter 18 is smaller. The cutting distance between the thinner printed circuit board 3 and the laser cutter 18 is larger than that between the thicker printed circuit board 3 and the laser cutter 18. When the laser cutter 18 cuts the thinner printed circuit board 3, it prevents the occurrence of carbon black at the cutting area on the surface of the printed circuit board 3, ensuring the cutting quality of the laser cutter 18 for the printed circuit board 3;While the printing circuit board 3 is clamped and positioned by the downward screwing movement of the threaded rod 5 with the rubber pad 21, the toothed plate 10 moves with the two inclined planes 11 to squeeze the guide rod 13. The guide rod 13 moves with the trapezoidal block 14 to squeeze the roller 35. After being squeezed by the trapezoidal block 14, the roller 35 moves upward to drive the lifting frame 15 upward. The lifting frame 15 moves upward to drive the spline rod 16 and the spline wheel 17 upward. The upward movement of the spline wheel 17 jacks up the moving seat 38 to drive the connecting frame 40 and the laser cutter 18 upward. Compared with traditional partial laser cutting equipment, this laser cutting device realizes the clamping and positioning of the printing circuit board 3 by the downward screwing movement of the threaded rod 5, and at the same time completes the height adjustment of the laser cutter 18, without the need for manual intervention to adjust the cutting distance again. This operation step is simple, time-saving and labor-saving, improves the cutting speed of the printing circuit board 3, and thus improves the cutting efficiency of the printing circuit board 3.

[0027] Embodiment 2: Please refer to Figure 1 - Figure 11 , the difference based on Embodiment 1 is that movable moving seats 38 are arranged above both spline wheels 17. A moving groove 39 in contact with the spline wheel 17 is formed in the bottom surface of the moving seat 38. Connecting frames 40 are respectively and fixedly installed between the laser cutter 18 and the two moving seats 38. An installation plate 41 is arranged on one side of the vertical frame 49. A through vertical groove 42 is formed on the surface of the installation plate 41. A sliding seat 43 matching the vertical groove 42 is slidably connected inside the vertical groove 42. A micro telescopic device 44 is fixedly installed on the surface of the sliding seat 43. The micro telescopic device 44 is a conventional micro electric control push rod in the prior art. A common fixing plate 45 is fixedly installed between the two connecting frames 40. The telescopic end of the micro telescopic device 44 is fixedly connected to the surface of the common fixing plate 45. The upward movement of the lifting frame 15 drives the spline rod 16 and the spline wheel 17 upward, so that the moving seat 38 moves upward to drive the connecting frame 40 and the laser cutter 18 upward. When cutting the position on the surface of the printing circuit board 3 that needs to be cut, the movable block 52 moves in the slot 50 to drive the installation plate 41 and the micro telescopic device 44 to move. The micro telescopic device 44 moves to drive the moving seat 38, the connecting frame 40 and the laser cutter 18 to move. During the movement of the moving seat 38, the spline wheel 17 slides on the surface of the spline rod 16. The micro telescopic device 44 extends to drive the common fixing plate 45 to move. The common fixing plate 45 moves to drive the connecting frame 40 and the laser cutter 18 to move. The connecting frame 40 moves to drive the moving seat 38 to move, so that the spline wheel 17 rolls inside the moving groove 39. During the height adjustment of the laser cutter 18 and the movement of the laser cutter 18 to the position to be cut, the spline wheel 17 can rotate and slide on the surface of the spline rod 16, increasing the flexibility of this cutting equipment.

[0028] The bottom surface of the support platform 1 is fixedly installed with a base 46. The surface of the base 46 is fixedly installed with a housing 47. The surface of the housing 47 is fixedly installed with a controller 48. The controller 48 is a conventional programmable control device in the prior art. Controlling the micro-expander 44 and the motor 53 to work is the prior art and can be installed and operated by those skilled in the art, so no further elaboration will be made here. The controller 48 is electrically connected to the micro-expander 44 through a wire.

[0029] A slot 50 is formed on the inner side surface of the vertical frame 49. A lead screw 51 is rotatably connected inside the slot 50. A movable block 52 is threadedly connected to the surface of the lead screw 51. The movable block 52 is matched with the slot 50. The surface of the movable block 52 is fixedly connected to the mounting plate 41. A motor 53 is fixedly installed on the side surface of the vertical frame 49. The motor 53 is a conventional forward and reverse motor in the prior art. The output end of the motor 53 is fixedly connected to the lead screw 51. The motor 53 is electrically connected to the controller 48 through a wire.

[0030] Usage steps of the present invention: When the automotive PCB cutting device with positioning function is in use, while the threaded rod 5 rotates downward to clamp and position the printed circuit board 3, after the height adjustment of the laser cutter 18 is completed, according to the position where the printed circuit board 3 needs to be cut, the controller 48 is operated. The controller 48 controls the motor 53 to rotate and drives the lead screw 51 to rotate, so that the movable block 52 moves in the slot 50 and drives the mounting plate 41 and the micro-expansion device 44 to move. The micro-expansion device 44 moves and drives the moving seat 38, the connecting frame 40 and the laser cutter 18 to move. During the movement of the moving seat 38, the spline wheel 17 slides on the surface of the spline rod 16. Then the micro-expansion device 44 extends and drives the co-fixing plate 45 to move. The co-fixing plate 45 moves and drives the connecting frame 40 and the laser cutter 18 to move. The connecting frame 40 moves and drives the moving seat 38 to move, so that the spline wheel 17 rolls inside the moving slot 39. When the laser cutter 18 moves to the position to be cut on the surface of the printed circuit board 3, the micro-expansion device 44 and the motor 53 are stopped. At this time, the laser cutter 18 works to cut the printed circuit board 3. In this solution, the lifting frame 15 moves upward and drives the spline rod 16 and the spline wheel 17 to move upward, so that the moving seat 38 moves upward and drives the connecting frame 40 and the laser cutter 18 to move upward. When cutting the position on the surface of the printed circuit board 3 that needs to be cut, the movable block 52 moves in the slot 50 and drives the mounting plate 41 and the micro-expansion device 44 to move. The micro-expansion device 44 moves and drives the moving seat 38, the connecting frame 40 and the laser cutter 18 to move. During the movement of the moving seat 38, the spline wheel 17 slides on the surface of the spline rod 16. The micro-expansion device 44 extends and drives the co-fixing plate 45 to move. The co-fixing plate 45 moves and drives the connecting frame 40 and the laser cutter 18 to move. The connecting frame 40 moves and drives the moving seat 38 to move, so that the spline wheel 17 rolls inside the moving slot 39. During the process of height adjustment of the laser cutter 18 and the movement of the laser cutter 18 to the position to be cut, the spline wheel 17 can rotate and slide on the surface of the spline rod 16, increasing the flexibility of the cutting device.

[0031] An automotive PCB cutting method with a positioning function includes the following steps: S1: First, place the printed circuit board 3 on the surface of the cutting table 2 with the left hand, aligning two corners of the printed circuit board 3 with the rubber pads 21. Then, turn the knob 27 with the right hand. The threaded tube 24 follows the knob 27 and screws outward towards the outside of the support frame 23. At this time, the rotating block 26 rotates within the fixed ring 25 and pulls the fixed ring 25 to move, driving the toothed plate 10 to move. During the movement of the toothed plate 10, it drives the moving block 29 to move inside the fixed frame 28, squeezing the second spring 30. The toothed plate 10 drives the two gears 9 to rotate. The gears 9 drive the rotating shaft 7 and the cross-shaped insertion rod 8 to rotate. The cross-shaped insertion rod 8 drives the threaded rod 5 to rotate. Since the threaded rod 5 is threadedly connected to the threaded ring 22, at this time, the threaded rod 5 screws downward, stretching the first spring 20. The threaded rod 5 screws in and drives the rubber pad 21 to clamp and position the printed circuit board 3. S2: While the toothed plate 10 is moving, it drives the two inclined planes 11 to move and squeeze the guide rod 13. The guide rod 13 drives the trapezoidal block 14 to move and squeeze the roller 35. During the movement of the trapezoidal block 14, it drives the slider 32 to slide inside the carriage 31, stretching the third spring 33. After being squeezed by the trapezoidal block 14, the roller 35 moves upward, driving the lifting frame 15 to move upward. The lifting frame 15 moves upward, driving the spline rod 16 and the spline wheel 17 to move upward, compressing the fourth spring 37. S3: The spline wheel 17 moves upward, lifting the moving seat 38, driving the connecting frame 40 and the laser cutter 18 to move upward. After the threaded rod 5 screws downward to clamp and position the printed circuit board 3, at the same time, the upward movement of the laser cutter 18 is completed. The laser cutter 18 operates to cut the printed circuit board 3.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An automotive PCB cutting device with a positioning function, comprising a support table (1) and a cutting table (2) fixedly installed on its surface, characterized in that: The surface of the cutting table (2) is placed with a printed circuit board (3) to be cut. Above the printed circuit board (3), a laser cutter (18) for cutting it is provided. On the side surface of the cutting table (2), an L-shaped frame (4) is fixedly installed. On the end surface of the L-shaped frame (4), a screw rod (5) that can be screwed downward is correspondingly provided. On the surface of the L-shaped frame (4), a support seat (6) is fixedly installed. On the end surface of the support seat (6), a rotating shaft (7) is correspondingly rotationally connected. On the bottom surfaces of the two rotating shafts (7), cross-shaped inserting rods (8) for driving the screw rod (5) to move are respectively fixedly installed. On the top surface of the rotating shaft (7), a gear (9) is fixedly installed. Above the support seat (6), a rack (10) meshing with the gear (9) is slidably connected. On the surface of the rack (10), two ramp surfaces (11) are correspondingly provided. On the side surface of the support seat (6), a mounting frame (12) is fixedly installed. On the surfaces of the two mounting frames (12), guide rods (13) are slidably connected. One ends of the two guide rods (13) are respectively in contact with the two ramp surfaces (11). One end of the guide rod (13) is fixedly installed with a trapezoidal block (14). On one side of the two trapezoidal blocks (14), a lifting frame (15) that can move vertically up and down is provided. On the inner side surface of the top of the lifting frame (15), a spline rod (16) is rotationally connected. On the surface of the spline rod (16), a spline wheel (17) that can rotate and slide is provided. When the screw rod (5) is screwed downward to clamp and position the printed circuit board (3), the lifting frame (15) moves upward to adjust the height of the laser cutter (18).

2. The automotive PCB cutting device with a positioning function according to claim 1, wherein: On the top surfaces of the two screw rods (5), cross grooves (19) matching the cross-shaped inserting rods (8) are provided. The cross-shaped inserting rods (8) and the cross grooves (19) are inserted into each other. Between the cross-shaped inserting rod (8) and the cross groove (19), a first spring (20) is elastically connected. One end of the first spring (20) is fixedly connected to the bottom surface of the cross-shaped inserting rod (8), and the other end of the first spring (20) is fixedly connected to the inner bottom surface of the cross groove (19). On the bottom surfaces of the two screw rods (5) and the surface of the cutting table (2), rubber pads (21) are fixedly installed. After the printed circuit board (3) is clamped and positioned, the two pairs of rubber pads (21) are in contact with the surface and the bottom surface of the printed circuit board (3). On the bottom surface of the L-shaped frame (4), a threaded ring (22) threadedly connected to the screw rod (5) is fixedly installed.

3. The automotive PCB cutting device with a positioning function according to claim 2, characterized in that: On the side surface of the L-shaped frame (4), a support frame (23) is fixedly installed. On the surface of the support frame (23), a threaded tube (24) is threadedly connected. On one end surface of the rack (10), a fixing ring (25) is fixedly installed. On one end surface of the threaded tube (24), a rotating block (26) is fixedly installed. The rotating block (26) and the fixing ring (25) are rotationally connected. On the other end surface of the threaded tube (24), a knob (27) is fixedly installed.

4. The automotive PCB cutting device with a positioning function according to claim 3, characterized in that: A fixing frame (28) is fixedly installed on the surface of the support base (6). A moving block (29) that matches it is slidably connected inside the fixing frame (28). The top surface of the moving block (29) is fixedly connected to the bottom surface of the toothed plate (10). The toothed plate (10) is slidably connected to the fixing frame (28) through the moving block (29). A second spring (30) is elastically connected between the moving block (29) and the fixing frame (28). One end of the second spring (30) is fixedly connected to the moving block (29), and the other end of the second spring (30) is fixedly connected to the inner wall of the fixing frame (28).

5. The automotive PCB cutting device with a positioning function according to claim 1, wherein: Sliding frames (31) are fixedly installed on the surfaces of both of the mounting frames (12). A slider (32) that matches it is slidably connected inside the sliding frame (31). The slider (32) is fixedly connected to the bottom surface of the trapezoidal block (14). A third spring (33) is elastically connected between the slider (32) and the sliding frame (31). One end of the third spring (33) is fixedly connected to the slider (32), and the other end of the third spring (33) is fixedly connected to the inner wall of the sliding frame (31).

6. The automotive PCB cutting device with a positioning function according to claim 1, wherein: A vertical frame (49) is fixedly installed on the surface of the support table (1). Two support connecting frames (34) are fixedly installed corresponding to the surface of the vertical frame (49). The lifting frame (15) is slidably connected to the support connecting frame (34). A roller (35) is rotatably connected to the inner side surface of the bottom of the lifting frame (15). The roller (35) contacts the surface of the trapezoidal block (14). A fixing plate (36) is fixedly installed on the inner side surface of the lifting frame (15). A fourth spring (37) is elastically connected between the fixing plate (36) and the support connecting frame (34). One end of the fourth spring (37) is fixedly connected to the surface of the fixing plate (36), and the other end of the fourth spring (37) is fixedly connected to the support connecting frame (34).

7. The automotive PCB cutting device with a positioning function according to claim 6, characterized in that: Above both of the spline wheels (17), there is a movable moving seat (38). A moving groove (39) that contacts the spline wheel (17) is formed on the bottom surface of the moving seat (38). Connecting frames (40) are respectively fixedly installed between the laser cutter (18) and the two moving seats (38). An installation plate (41) is arranged on one side of the vertical frame (49). A through vertical groove (42) is formed on the surface of the installation plate (41). A sliding seat (43) that matches it is slidably connected inside the vertical groove (42). A micro telescopic device (44) is fixedly installed on the surface of the sliding seat (43). A common fixing plate (45) is fixedly installed between the two connecting frames (40). The telescopic end of the micro telescopic device (44) is fixedly connected to the surface of the common fixing plate (45).

8. The automotive PCB cutting device with a positioning function according to claim 7, wherein: A base (46) is fixedly installed on the bottom surface of the support table (1). A housing (47) is fixedly installed on the surface of the base (46). A controller (48) is fixedly installed on the surface of the housing (47). The controller (48) is electrically connected to the micro telescopic device (44) through a wire.

9. The automotive PCB cutting device with a positioning function according to claim 8, wherein: A slot (50) is formed on the inner side surface of the vertical frame (49). A lead screw (51) is rotatably connected inside the slot (50). A movable block (52) is threadedly connected to the surface of the lead screw (51). The movable block (52) is matched with the slot (50). The surface of the movable block (52) is fixedly connected to the mounting plate (41). A motor (53) is fixedly installed on the side surface of the vertical frame (49). The output end of the motor (53) is fixedly connected to the lead screw (51). The motor (53) is electrically connected to the controller (48) through a wire.

10. A method for cutting an automotive PCB with a positioning function, using the automotive PCB cutting device with a positioning function according to any one of claims 1-9, characterized in that, Including the following steps: S1: First, place the printed circuit board (3) on the surface of the cutting table (2) with the left hand, aligning two corners of the printed circuit board (3) with the rubber pads (21). Then, turn the knob (27) with the right hand. The threaded tube (24) follows the knob (27) and advances outwardly from the support frame (23). At this time, the rotating block (26) rotates within the fixed ring (25) and pulls the fixed ring (25) to move, driving the toothed plate (10) to move. During the movement of the toothed plate (10), the movable block (29) is driven to move inside the fixed frame (28) to compress the second spring (30). The toothed plate (10) drives the two gears (9) to rotate. The gears (9) drive the rotating shaft (7) and the cross-shaped insertion rod (8) to rotate. The cross-shaped insertion rod (8) drives the threaded rod (5) to rotate. Since the threaded rod (5) is threadedly connected to the threaded ring (22), the threaded rod (5) advances downwardly to stretch the first spring (20). The threaded rod (5) advances to drive the rubber pads (21) to clamp and position the printed circuit board (3). S2: While the toothed plate (10) moves, it drives the two ramp surfaces (11) to move and compress the guide rods (13). The guide rods (13) drive the trapezoidal blocks (14) to move and compress the rollers (35). During the movement of the trapezoidal blocks (14), the sliders (32) are driven to slide inside the sliding frames (31) to stretch the third springs (33). After being compressed by the trapezoidal blocks (14), the rollers (35) move upward to drive the lifting frames (15) to move upward. The lifting frames (15) move upward to drive the spline rods (16) and the spline wheels (17) to move upward to compress the fourth springs (37). S3: The spline wheels (17) move upward to lift the movable seats (38), driving the connecting frames (40) and the laser cutters (18) to move upward. After the threaded rod (5) advances downward to clamp and position the printed circuit board (3), simultaneously, the upward movement of the laser cutters (18) is completed. The laser cutters (18) operate to cut the printed circuit board (3).

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