Burr detection device and detection method for circuit board production

Abstract

The invention relates to the technical field of detection devices, and discloses a burr detection device for circuit board production and a detection method.The burr detection device comprises a bottom plate, two wallboards are symmetrically and fixedly installed on the upper surface of the bottom plate, two conveying rollers are rotatably installed between the two wallboards, and the outer surfaces of the two conveying rollers are sleeved with a conveying belt; and the width of the conveying belt is smaller than the distance between the two wall plates, a door-shaped frame is fixedly installed between the top ends of the two wall plates, and two industrial cameras are symmetrically and fixedly installed at the top of the door-shaped frame. According to the invention, the pigment is dipped and dyed on the side edge of the circuit board through the sponge belt, so that the protruding burrs on the side edge of the circuit board are coated with the pigment which is different from the color of the material of the circuit board to form color contrast, and the burrs of the circuit board can be observed more clearly through color difference during subsequent shooting detection of an industrial camera; and the detection precision and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a burr detection device and a detection method for circuit board production. Background Art

[0002] During the mechanical processing of circuit boards such as cutting and milling, if the tool is not sharp enough or the processing speed is too fast, it is easy to cause burrs or residues on the edges of the circuit boards, resulting in a small number of unqualified products. For this reason, it is necessary to conduct quality inspection on the burrs of the produced circuit boards.

[0003] An existing visual inspection device for PCB boards (Announcement No.: CN215866341U) has at least the following disadvantages: the above patent eliminates the interference of dust on the visual inspection of PCB boards through a negative pressure device; when the burrs of the circuit board are photographed and inspected by the visual inspection device, since the protruding burrs are the same color as the material of the circuit board itself, there is a lack of visual contrast and it is difficult to clearly distinguish the burrs from the surrounding circuit boards, which makes it easy for the visual inspection system to misidentify the burr features during shooting, affecting the precision and accuracy of the inspection. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a burr detection device and a detection method for circuit board production.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A burr detection device for circuit board production comprises a base plate, two wall panels are symmetrically fixedly mounted on the upper surface of the base plate, two conveying rollers are rotatably mounted between the two wall panels, the outer surfaces of the two conveying rollers are sleeved with conveyor belts, the width of the conveyor belts is less than the spacing between the two wall panels, a portal frame is fixedly mounted between the top ends of the two wall panels, two industrial cameras are symmetrically fixedly mounted on the top of the portal frame, sliders are slidably mounted through the outer surfaces of the two wall panels close to the portal frame, a support plate is fixedly mounted on the upper surface of the slider away from one end of the wall panel, a mounting plate is fixedly mounted between the two wall panels, and a dipping mechanism for applying eye-catching pigments to the burrs on the sides of the circuit board is mounted on the support plate.

[0006] As a further solution of the present invention, the dipping and dyeing mechanism includes two hollow shafts rotatably mounted on the upper surface of the support plate, sponge sleeves are fixedly mounted on the outer surfaces of the two hollow shafts, sponge belts are sleeved on the outer surfaces of the two sponge sleeves, a number of through holes are evenly penetrated through the outer surfaces of the hollow shafts, and a driving mechanism is installed on the mounting plate to drive two of the hollow shafts correspondingly arranged on the left and right sides to rotate.

[0007] As a further solution of the present invention, the driving mechanism includes a dual-axis motor fixedly mounted on the upper surface of a mounting plate, and transmission tubes are fixedly mounted on both output ends of the dual-axis motor, and transmission shafts are inserted inside the two transmission tubes, and the transmission shafts and the transmission tubes are slidably mounted via splines, and one end of the transmission shaft away from the transmission tube is rotatably mounted on the lower surface of the support plate, and a driving bevel gear is fixedly mounted on the end of the transmission shaft away from the transmission tube, and a driven bevel gear is fixedly mounted on the rotation center of a hollow shaft close to the driving bevel gear, and the driven bevel gear is meshed with the driving bevel gear, and a pushing mechanism for driving the two sliders to move back and forth is also installed on the mounting plate.

[0008] As a further solution of the present invention, the pushing mechanism includes two rotating rods respectively rotatably mounted on the outer surfaces of the two sliders, a spring rod is fixedly mounted on the upper surface of the mounting plate, a push plate is fixedly mounted on the telescopic end of the spring rod, the end portions of the two rotating rods away from the sliders are rotatably mounted on the outer surface of the push plate, and a pushing assembly is installed between the transmission tube and the push plate.

[0009] As a further solution of the present invention, the pushing assembly includes an eccentric wheel fixedly mounted on the outer surface of the transmission tube, and the outer periphery of the eccentric wheel abuts against the outer surface of the push plate.

[0010] As a further solution of the present invention, a feeding mechanism for intermittently adding pigment to the interior of a hollow shaft away from the driving mechanism is installed between the wall panel and the slider, the feeding mechanism includes a storage barrel fixedly installed on the outer surface of the wall panel, a rotary joint connected to the interior of the hollow shaft away from the driving mechanism is installed at the bottom, a piston cylinder is fixedly installed on the outer surface of the wall panel, a liquid outlet pipe is installed between the closed end of the piston cylinder and the rotary joint, a liquid inlet pipe is also fixedly installed on the closed end of the piston cylinder, the other end of the liquid inlet pipe is inserted into the storage barrel, both the liquid outlet pipe and the liquid inlet pipe are hoses, and one-way valves arranged in opposite directions of conduction are respectively installed on the liquid outlet pipe and the liquid inlet pipe, and a liquid pumping assembly is installed between the piston cylinder and the slider.

[0011] As a further solution of the present invention, the pumping assembly includes a piston rod fixedly mounted on the bottom of the slider, and a piston head is fixedly mounted on one end of the piston rod close to the piston cylinder, and the piston head is slidably mounted on the inner wall of the piston cylinder.

[0012] As a further solution of the present invention, a fill light is fixedly installed on the top of the portal frame close to the industrial camera.

[0013] A method for detecting burrs for circuit board production comprises the following steps: S1: Place the circuit board to be tested on the conveyor belt, and convey the circuit board toward the door frame through the conveyor belt; S2: The eye-catching pigment filled in the hollow shaft is soaked into the surface of the sponge belt, so that the sponge belt dips the pigment on the side of the circuit board, so that the protruding rough edge of the side of the circuit board is painted with a pigment different from the color of the circuit board itself, forming a color contrast; S3: Two industrial cameras installed on the gantry are used to photograph and inspect both sides of the circuit board from directly above.

[0014] The beneficial effects of the present invention are: 1. The output end of the dual-axis motor drives the transmission tube to rotate. Since the transmission tube is installed with the transmission shaft through the spline, the transmission tube can drive the transmission shaft to rotate synchronously when rotating, so that the active bevel gear installed at the end of the transmission shaft rotates, and the active bevel gear drives the driven bevel gear meshing with it to rotate, so that the driven bevel gear drives the hollow shaft fixed with it to rotate, so that the hollow shaft and the sponge sleeve can drive the sponge belt to move, so that the eye-catching pigment filled in the hollow shaft can evenly penetrate the surface of the sponge belt, so that the sponge belt can dip the pigment on the side of the circuit board, so that the protruding burrs on the side of the circuit board are coated with pigments different from the color of the circuit board's own material, forming a color contrast, so that the burrs of the circuit board can be more clearly observed through the color difference during the subsequent industrial camera shooting and detection, thereby improving the precision and accuracy of the detection; 2. When the transmission tube rotates, the eccentric wheel fixed on its outer surface will be driven to rotate, so that the eccentric wheel continuously pushes the push plate to move back and forth, and the push plate pushes the slider to move back and forth through the rotating rod, so that the sponge belt installed on the slider can move back and forth accordingly, so that the sponge belt can intermittently dye the side of the circuit board, so as to avoid the side of the circuit board always contacting with the sponge belt, causing the paint inside the sponge belt to be squeezed out too much by the side of the circuit board, so that the squeezed out excessive paint contaminates the upper surface of the circuit board, affecting the accuracy of the subsequent industrial camera to shoot and detect the burrs on the side of the circuit board; 3. The pigment is squeezed into the hollow shaft intermittently through the feeding mechanism, so that the pigment squeezed into the hollow shaft flows out and soaks the sponge sleeve, and then the pigment is dipped into the sponge belt through the sponge sleeve, and the pigment on the sponge belt is kept sufficient so that the pigment can be dipped into the rough edge of the side of the circuit board through the sponge belt, which is convenient for subsequent shooting and detection by industrial cameras. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a burr detection device for circuit board production proposed by the present invention; Figure 2 A schematic diagram of the side structure of a conveyor belt for removing burrs of a circuit board production device proposed by the present invention; Figure 3 A schematic diagram of the bottom structure of a support plate of a burr detection device for circuit board production proposed by the present invention; Figure 4This is a schematic diagram of the sponge belt structure of a burr detection device for circuit board production proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a slider and a support plate of a burr detection device for circuit board production proposed by the present invention; Figure 6 This is a schematic cross-sectional structure diagram of a sponge sleeve of a burr detection device for circuit board production proposed by the present invention; Figure 7 A schematic diagram of the portal frame structure of a burr detection device for circuit board production proposed by the present invention; Figure 8 for Figure 2 A magnified view of the structure at center; Fig. 9 for Figure 3 A magnified view of the structure at B in the middle; Fig.10 for Figure 4 Enlarged view of the structure at point C in the middle.

[0016] In the figure: 1. bottom plate; 2. wall panel; 3. conveyor roller; 4. conveyor belt; 5. portal frame; 6. industrial camera; 7. fill light; 8. slider; 9. support plate; 10. hollow shaft; 11. sponge sleeve; 12. sponge belt; 13. mounting plate; 14. double-axis motor; 15. transmission pipe; 16. transmission shaft; 17. driving bevel gear; 18. driven bevel gear; 19. storage barrel; 20. piston barrel; 21. liquid inlet pipe; 22. liquid outlet pipe; 23. rotary joint; 24. piston rod; 25. piston head; 26. one-way valve; 27. rotating rod; 28. push plate; 29. ​​eccentric wheel; 30. spring rod. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] See attached Figure 1 -Attached Fig.10A burr detection device for circuit board production includes a bottom plate 1, two wall panels 2 are symmetrically fixedly installed on the upper surface of the bottom plate 1, two conveying rollers 3 are rotatably installed between the two wall panels 2, and the outer surfaces of the two conveying rollers 3 are sleeved with a conveyor belt 4, a driving motor is fixedly installed on the outer surface of one of the wall panels 2, the output end of the driving motor passes through the outer surface of the wall panel 2 and is fixedly installed with the rotation center of one of the conveying rollers 3, so that the driving motor drives the conveying roller 3 to rotate, so that the conveying roller 3 drives the conveyor belt 4 to move; the width of the conveyor belt 4 is smaller than the spacing between the two wall panels 2, so that when the circuit board is placed on the conveyor belt 4, the two sides of the circuit board can extend out of the two sides of the conveyor belt 4, so as to avoid the paint from adhering to the conveyor belt when the side of the circuit board is subsequently dipped in paint. The conveyor belt 4 is polluted; a door frame 5 is fixedly installed between the tops of the two wall panels 2, and two industrial cameras 6 are symmetrically fixedly installed on the top of the door frame 5. A fill light 7 is fixedly installed on the top of the door frame 5 near the industrial camera 6. The side area of ​​the circuit board can be filled with light by the fill light 7, so that the industrial camera 6 can take clearer pictures and detect them. Slide blocks 8 are slidably installed on the outer surfaces of the two wall panels 2 near the door frame 5. A slide groove is opened on the outer surface of the wall panel 2. The slide block 8 is slidably installed on the inner wall of the slide groove. A support plate 9 is fixedly installed on the upper surface of the slide block 8 away from one end of the wall panel 2, and a mounting plate 13 is fixedly installed between the two wall panels 2. A dipping mechanism for applying eye-catching pigments to the rough edges on the sides of the circuit board is installed on the support plate 9.

[0020] In this embodiment, the dyeing mechanism includes two hollow shafts 10 rotatably mounted on the upper surface of the support plate 9, the outer surfaces of the two hollow shafts 10 are fixedly mounted with sponge sleeves 11, the outer surfaces of the two sponge sleeves 11 are sleeved with sponge belts 12, and the outer surfaces of the hollow shafts 10 are uniformly penetrated with a plurality of through holes, and a driving mechanism for driving two of the hollow shafts 10 correspondingly arranged on the left and right sides to rotate is installed on the mounting plate 13, and the pushing mechanism includes two rotating rods 27 rotatably mounted on the outer surfaces of the two sliders 8, and the upper surface of the mounting plate 13 is fixedly mounted with A spring rod 30, a push plate 28 is fixedly installed on the telescopic end of the spring rod 30, a protrusion is fixedly installed on the outer surface of the push plate 28 close to the eccentric wheel 29, the eccentric wheel 29 is abutted against the outer surface of the protrusion, the protrusion and the eccentric wheel 29 are made of wear-resistant material, the end of the two rotating rods 27 away from the slider 8 is rotatably installed on the outer surface of the push plate 28, a pushing assembly is installed between the transmission tube 15 and the push plate 28, the pushing assembly includes an eccentric wheel 29 fixedly installed on the outer surface of the transmission tube 15, and the outer periphery of the eccentric wheel 29 is abutted against the outer surface of the push plate 28.

[0021] When the transmission tube 15 rotates, the eccentric wheel 29 fixed on its outer surface will be driven to rotate, so that the eccentric wheel 29 continuously pushes the push plate 28 to move back and forth, and the push plate 28 pushes the slider 8 to move back and forth through the rotating rod 27, so that the sponge belt 12 installed on the slider 8 can move back and forth accordingly, so that the sponge belt 12 can intermittently dye the side of the circuit board, so as to avoid the side of the circuit board always being in contact with the sponge belt 12, resulting in excessive squeezing of the paint inside the sponge belt 12 by the side of the circuit board, so that the excessively squeezed paint contaminates the upper surface of the circuit board, affecting the accuracy of the subsequent industrial camera 6 in shooting and detecting the rough edges of the side of the circuit board.

[0022] In this embodiment, the driving mechanism includes a dual-axis motor 14 fixedly mounted on the upper surface of the mounting plate 13, and a transmission tube 15 is fixedly mounted on both output ends of the dual-axis motor 14. A transmission shaft 16 is inserted inside the two transmission tubes 15, and the transmission shaft 16 and the transmission tube 15 are slidably mounted through a spline. The end of the transmission shaft 16 away from the transmission tube 15 is rotatably mounted on the lower surface of the support plate 9, and a limit plate is fixedly mounted on the lower surface of the support plate 9. The end of the transmission shaft 16 passes through the outer surface of the limit plate and is rotatably mounted therewith, so that the support plate 9 can drive the transmission shaft 16 to move synchronously through the limit plate; and a driving bevel gear 17 is fixedly mounted on the end of the transmission shaft 16 away from the transmission tube 15, and a driven bevel gear 18 is fixedly mounted on the rotation center of a hollow shaft 10 close to the driving bevel gear 17, and the driven bevel gear 18 is meshed with the driving bevel gear 17. A pushing mechanism that drives the two sliders 8 to move back and forth is also installed on the mounting plate 13.

[0023] When in use, the transmission tube 15 is driven to rotate by the output end of the dual-axis motor 14. Since the transmission tube 15 is installed with the transmission shaft 16 through the spline, the transmission tube 15 can drive the transmission shaft 16 to rotate synchronously when rotating, so that the active bevel gear 17 installed at the end of the transmission shaft 16 rotates, and the active bevel gear 17 drives the driven bevel gear 18 meshing with it to rotate, so that the driven bevel gear 18 drives the hollow shaft 10 fixedly installed therewith to rotate, so that the hollow shaft 10 and the sponge sleeve 11 can drive the sponge belt 12 to move, so that the eye-catching pigment filled in the hollow shaft 10 can evenly penetrate the surface of the sponge belt 12, so that the sponge belt 12 can dip the pigment on the side of the circuit board, so that the protruding burrs on the side of the circuit board are coated with pigments different from the color of the circuit board's own material, forming a color contrast, so that the burrs of the circuit board can be more clearly observed through the color difference during the subsequent industrial camera 6 shooting and detection, thereby improving the precision and accuracy of the detection.

[0024] In this embodiment, a feeding mechanism for intermittently adding pigment to a hollow shaft 10 away from the driving mechanism is installed between the wall panel 2 and the slider 8. The feeding mechanism includes a storage cylinder 19 fixedly installed on the outer surface of the wall panel 2. The storage cylinder 19 is filled with liquid eye-catching pigment. A rotary joint 23 connected to the interior of the hollow shaft 10 away from the driving mechanism is installed at the bottom. A piston cylinder 20 is fixedly installed on the outer surface of the wall panel 2. A liquid outlet pipe 22 is installed between the closed end of the piston cylinder 20 and the rotary joint 23. The piston cylinder 2 0 is also fixedly installed with a liquid inlet pipe 21 at the closed end, and the other end of the liquid inlet pipe 21 is inserted into the storage barrel 19. The liquid outlet pipe 22 and the liquid inlet pipe 21 are both hoses. The liquid outlet pipe 22 and the liquid inlet pipe 21 are respectively installed with a one-way valve 26 with opposite conduction directions. A liquid pumping component is installed between the piston cylinder 20 and the slider 8. The liquid pumping component includes a piston rod 24 fixedly installed at the bottom of the slider 8, and a piston head 25 is fixedly installed at one end of the piston rod 24 close to the piston cylinder 20. The piston head 25 is slidably installed with the inner wall of the piston cylinder 20.

[0025] When the slider 8 moves, the piston rod 24 and the piston head 25 will be driven to move synchronously, so that the piston head 25 will perform piston motion in the piston cylinder 20. When the piston head 25 moves in a direction away from the piston cylinder 20, the one-way valve 26 on the liquid inlet pipe 21 will open, and the pigment in the storage cylinder 19 will be drawn into the piston cylinder 20 through the liquid inlet pipe 21. When the piston head 25 moves in a direction close to the piston cylinder 20, the one-way valve 26 on the liquid inlet pipe 21 will be closed, and the one-way valve 26 on the liquid outlet pipe 22 will be opened, so that the piston head 25 will squeeze the pigment in the piston cylinder 20 into the hollow shaft 10 connected thereto through the liquid outlet pipe 22, so that the pigment squeezed into the hollow shaft 10 will flow out and soak the sponge sleeve 11, and then the pigment will be impregnated on the sponge belt 12 through the sponge sleeve 11 to keep the sponge belt 12 sufficient in pigment.

[0026] A method for detecting burrs for circuit board production comprises the following steps: S1: Place the circuit board to be tested on the conveyor belt 4, and convey the circuit board toward the door frame 5 through the conveyor belt 4; S2: The eye-catching pigment filled in the hollow shaft 10 penetrates the surface of the sponge belt 12, so that the sponge belt 12 dips the pigment on the side of the circuit board, so that the protruding burrs on the side of the circuit board are painted with pigment different from the color of the circuit board material itself, forming a color contrast; S3: Use two industrial cameras 6 installed on the gantry 5 to photograph and inspect both sides of the circuit board from directly above.

[0027] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: when in use, the circuit board to be inspected is placed on the conveyor belt 4, and the circuit board is conveyed toward the door frame 5 by the conveyor belt 4, so that the two sides of the circuit board can be photographed and inspected from above by two industrial cameras 6 installed on the door frame 5; The transmission tube 15 is driven to rotate by the output end of the dual-axis motor 14. Since the transmission tube 15 is installed with the transmission shaft 16 through the spline, the transmission tube 15 can drive the transmission shaft 16 to rotate synchronously when rotating, so that the active bevel gear 17 installed at the end of the transmission shaft 16 rotates, and the active bevel gear 17 drives the driven bevel gear 18 meshing with it to rotate, so that the driven bevel gear 18 drives the hollow shaft 10 fixedly installed therewith to rotate, so that the hollow shaft 10 and the sponge sleeve 11 can drive the sponge belt 12 to move, so that the eye-catching pigment filled in the hollow shaft 10 can evenly penetrate the surface of the sponge belt 12, so that the sponge belt 12 can dip the pigment on the side of the circuit board, so that the burrs protruding on the side of the circuit board are coated with pigments different from the color of the circuit board's own material, forming a color contrast, so that the burrs of the circuit board can be more clearly observed by the color difference when the industrial camera 6 is photographed and inspected later, thereby improving the precision and accuracy of the inspection; it is convenient to take appropriate measures later, such as trimming or adjusting the production process, to reduce the generation of burrs; When the transmission tube 15 rotates, the eccentric wheel 29 fixedly installed on its outer surface will be driven to rotate, so that the eccentric wheel 29 continuously pushes the push plate 28 to move back and forth, so that the push plate 28 pushes the slider 8 to move back and forth through the rotating rod 27, so that the sponge belt 12 installed on the slider 8 can move back and forth accordingly, so that the sponge belt 12 can intermittently dye the side of the circuit board, so as to avoid the side of the circuit board always being in contact with the sponge belt 12, resulting in excessive pigment inside the sponge belt 12 being squeezed out by the side of the circuit board, so that the excessively squeezed pigment contaminates the upper surface of the circuit board, affecting the accuracy of the subsequent industrial camera 6 in photographing and detecting the rough edges of the side of the circuit board; When the slider 8 moves, it will drive the piston rod 24 and the piston head 25 to move synchronously, so that the piston head 25 makes a piston motion in the piston cylinder 20. When the piston head 25 moves in a direction away from the piston cylinder 20, the one-way valve 26 on the liquid inlet pipe 21 opens, and the pigment in the storage cylinder 19 is drawn into the piston cylinder 20 through the liquid inlet pipe 21. When the piston head 25 moves in a direction close to the piston cylinder 20, the one-way valve 26 on the liquid inlet pipe 21 is closed, and the one-way valve 26 on the liquid outlet pipe 22 opens, so that the piston head 25 squeezes the pigment in the piston cylinder 20 into the hollow shaft 10 connected thereto through the liquid outlet pipe 22, so that the pigment squeezed into the hollow shaft 10 flows out and soaks the sponge sleeve 11, and then the pigment is dipped into the sponge belt 12 through the sponge sleeve 11, and the pigment is kept sufficient on the sponge belt 12 so that the pigment can be dipped on the rough edge of the side of the circuit board through the sponge belt 12, which is convenient for the subsequent shooting and detection of the industrial camera 6.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A burr detection device for circuit board production, comprising a bottom plate (1), two wall plates (2) being symmetrically fixedly mounted on the upper surface of the bottom plate (1), two conveying rollers (3) being rotatably mounted between the two wall plates (2), a conveying belt (4) being sleeved on the outer surfaces of the two conveying rollers (3), the width of the conveying belt (4) being smaller than the spacing between the two wall plates (2), characterized in that: A door frame (5) is fixedly installed between the top ends of the two wall panels (2), and two industrial cameras (6) are symmetrically fixedly installed on the top of the door frame (5). A slider (8) is slidably installed through the outer surfaces of the two wall panels (2) close to the door frame (5), and a support plate (9) is fixedly installed on the upper surface of the slider (8) away from the wall panel (2). A mounting plate (13) is fixedly installed between the two wall panels (2). A dyeing mechanism for applying eye-catching paint to the rough edges of the side of the circuit board is installed on the support plate (9), and the dyeing mechanism includes two hollow shafts (10) rotatably installed on the upper surface of the support plate (9), and sponge sleeves (11) are fixedly installed on the outer surfaces of the two hollow shafts (10). The outer surfaces of the two sponge sleeves (11) are covered with sponge belts (12), and the outer surface of the hollow shaft (10) is evenly penetrated with a plurality of through holes, and the mounting plate (13) is equipped with a device for driving the corresponding devices on the left and right sides. A driving mechanism for rotating two hollow shafts (10) disposed therein, the driving mechanism comprising a double-shaft motor (14) fixedly mounted on the upper surface of a mounting plate (13), a transmission tube (15) fixedly mounted on both output ends of the double-shaft motor (14), a transmission shaft (16) inserted into the interior of the two transmission tubes (15), the transmission shaft (16) and the transmission tube (15) being slidably mounted via a spline, the end of the transmission shaft (16) away from the transmission tube (15) being rotatably mounted on the lower surface of a support plate (9), and a driving bevel gear (17) fixedly mounted on the end of the transmission shaft (16) away from the transmission tube (15), a driven bevel gear (18) fixedly mounted on the rotation center of a hollow shaft (10) close to the driving bevel gear (17), the driven bevel gear (18) meshing with the driving bevel gear (17), and a pushing mechanism for driving two sliders (8) to reciprocate is also mounted on the mounting plate (13).

2. A burr detection device for circuit board production according to claim 1, characterized in that: The pushing mechanism comprises two rotating rods (27) respectively rotatably mounted on the outer surfaces of the two sliders (8); a spring rod (30) is fixedly mounted on the upper surface of the mounting plate (13); a push plate (28) is fixedly mounted on the telescopic end of the spring rod (30); ends of the two rotating rods (27) away from the sliders (8) are rotatably mounted on the outer surface of the push plate (28); and a pushing assembly is installed between the transmission tube (15) and the push plate (28).

3. A burr detection device for circuit board production according to claim 2, characterized in that: The pushing assembly comprises an eccentric wheel (29) fixedly mounted on the outer surface of the transmission tube (15), and the outer periphery of the eccentric wheel (29) abuts against the outer surface of the pushing plate (28).

4. A burr detection device for circuit board production according to claim 1, characterized in that: A feeding mechanism for intermittently adding pigment to the interior of a hollow shaft (10) away from the driving mechanism is installed between the wall panel (2) and the slider (8). The feeding mechanism comprises a storage barrel (19) fixedly installed on the outer surface of the wall panel (2). A rotary joint (23) connected to the interior of the hollow shaft (10) away from the driving mechanism is installed at the bottom of the hollow shaft (10) away from the driving mechanism. A piston barrel (20) is fixedly installed on the outer surface of the wall panel (2). A liquid outlet pipe (22) is installed between the closed end of the piston barrel (20) and the rotary joint (23). A liquid inlet pipe (21) is also fixedly installed on the closed end of the piston barrel (20). The other end of the liquid inlet pipe (21) is inserted into the storage barrel (19). One-way valves (26) arranged in opposite directions of conduction are respectively installed on the liquid outlet pipe (22) and the liquid inlet pipe (21). A liquid pumping assembly is installed between the piston barrel (20) and the slider (8).

5. A burr detection device for circuit board production according to claim 4, characterized in that: The pumping assembly comprises a piston rod (24) fixedly mounted on the bottom of the slider (8); a piston head (25) is fixedly mounted on one end of the piston rod (24) close to the piston cylinder (20); and the piston head (25) is slidably mounted on the inner wall of the piston cylinder (20).

6. A burr detection device for circuit board production according to claim 1, characterized in that: A fill light (7) is fixedly mounted on the top of the portal frame (5) near the industrial camera (6).

7. A method for detecting burrs for circuit board production, characterized in that: A burr detection device for circuit board production according to any one of claims 1 to 6 comprises the following steps: S1: placing the circuit board to be inspected on a conveyor belt (4), and conveying the circuit board toward the door frame (5) via the conveyor belt (4); S2: soaking the surface of the sponge belt (12) with the eye-catching pigment filled in the hollow shaft (10), so that the sponge belt (12) dips the pigment on the side of the circuit board, so that the protruding rough edge of the side of the circuit board is painted with a pigment different from the color of the circuit board material itself, forming a color contrast; S3: Two industrial cameras (6) installed on the gantry (5) are used to photograph and inspect both sides of the circuit board from directly above.

Images