A circuit board processing defect visual detection device and detection method

Abstract

The application belongs to the technical field of circuit board detection, and particularly relates to a circuit board processing defect visual detection device and a detection method. After defect detection, the circuit board often needs to be turned over, and the circuit board without detected defects needs to be subjected to secondary visual detection, which affects the defect visual detection efficiency. The following scheme is proposed, which comprises a detection base frame, a fixed base is fixedly connected to the top of the detection base frame, four guide rods are fixedly connected to the fixed base, an activity base is movably connected to the outer wall of the four guide rods, a detection deflection module is arranged on one side of the detection base frame. The disclosed circuit board processing defect visual detection device and detection method have the effect of increasing the defect visual detection efficiency. When detection is performed, the circuit board can be deflected, so that both sides of the circuit board can be simultaneously detected, and the circuit board without detected defects does not need to be subjected to secondary visual detection, thereby increasing the use effect of the device.

Description

Technical Field

[0001] This invention relates to the field of circuit board inspection technology, and in particular to a visual inspection device and method for circuit board processing defects. Background Technology

[0002] A printed circuit board (PCB) is a support structure for electronic components and a carrier for electrical connections. It is manufactured using electronic printing technology and features miniaturization and intuitive design.

[0003] Circuit boards are boards used to support electronic components and provide circuits to connect them. After the circuit boards are manufactured, in order to ensure the quality of the circuit boards that come off the production line, they need to be inspected for circuit board materials using defect detection devices.

[0004] In existing circuit board defect visual inspection, the circuit boards are mostly placed horizontally, which means that the visual inspection equipment can only inspect one side. Therefore, after defect inspection, the circuit board often needs to be flipped over and a second visual inspection is performed on the circuit board that did not detect defects, which affects the efficiency of defect visual inspection. Summary of the Invention

[0005] This invention discloses a visual inspection device and method for circuit board processing defects, aiming to solve the technical problem in the prior art where existing circuit boards are mostly placed horizontally during defect visual inspection, causing the visual inspection equipment to only inspect one side. Therefore, after defect inspection, the circuit board often needs to be flipped and a second visual inspection is performed on the circuit board that did not detect defects, which affects the efficiency of defect visual inspection.

[0006] The present invention proposes a visual inspection device for defects in circuit board processing, comprising an inspection base frame, a fixed base fixedly connected to the top of the inspection base frame, and four guide rods fixedly connected to the fixed base. The outer walls of the four guide rods are movably connected to the same movable base. An inspection deflection module is provided on one side of the inspection base frame. The bottom of the fixed base frame has four fixing ports, and an inspection cleaning module is provided inside the four fixing ports. Electric telescopic rods are fixedly connected to both outer walls of the fixed base frame, and the output ends of the four electric telescopic rods are respectively fixedly connected to the two outer walls of the movable base frame.

[0007] The detection deflection module includes two deflection brackets, both of which are located on the outside of one side of the fixed base, and a push guide rail is fixedly connected to the outer wall of one side of each of the two deflection brackets. The detection deflection module is used to deflect the circuit board during visual inspection so that the circuit board can be visually inspected from both sides at the same time, thereby increasing the inspection efficiency.

[0008] The detection and cleaning module includes four telescopic airbags and multiple negative pressure filter chambers, with each pair of adjacent negative pressure filter chambers located on the top of the same telescopic airbag. The detection and cleaning module is used to clean the surface of the circuit board to prevent dust or circuit board processing debris from affecting the detection accuracy.

[0009] In a preferred embodiment, the detection deflection module further includes a mounting frame, which is fixedly connected to the detection base frame. A linear lead screw is provided inside the mounting frame, and the outer wall of the linear lead screw and the inner wall of the mounting frame are provided with the same mounting base frame. Two shaft members are movably connected to the mounting base frame, and two deflection brackets are respectively movably connected to the outer walls of the two shaft members. A stepper motor is fixedly connected to the bottom of the mounting frame, and the output shaft of the stepper motor is connected to the bottom end of the linear lead screw through a coupling.

[0010] In a preferred embodiment, two deflection motors are fixedly connected to one side of the outer wall of the mounting base. The output shafts of the two deflection motors are respectively connected to one end of two shaft members through couplings. Movable blocks are movably connected to both push rails. Detection push frames are fixedly connected to one side of the outer wall of each of the two movable blocks. Four mounting holes are opened on the top of each of the two detection push frames, and fixed sleeve frames are fixedly connected to the inner walls of the multiple mounting holes.

[0011] In a preferred embodiment, an electric push rod is fixedly connected to one outer wall of each of the two push rails. The output ends of the two electric push rods are fixedly connected to one outer wall of each of the two movable blocks. A negative pressure pump is fixedly connected to the top of each of the two detection push frames. Two connecting pipes are fixedly connected to the input ends of each of the two negative pressure pumps. A connecting chamber is fixedly connected to the input ends of each of the four connecting pipes. Two fixed suction cups are fixedly connected to the outer walls of each of the four connecting chambers through pipes. The multiple fixed suction cups are located inside multiple fixed sleeve frames.

[0012] In a preferred embodiment, the top inner walls of the plurality of fixed sleeve frames are all fixedly connected with telescopic springs, the bottom ends of the plurality of telescopic springs are respectively fixedly connected with the outer walls of the plurality of fixed suction cups, and electric rods are fixedly connected to the two detection push frames. The output ends of the two electric rods are fixedly connected with lifting plate frames, and the bottoms of the two lifting plate frames are fixedly connected with a plurality of connecting cables. The bottom ends of the plurality of connecting cables are respectively fixedly connected with the tops of the plurality of fixed suction cups.

[0013] In a preferred embodiment, side supports are fixedly connected to both outer walls of the detection base, and feeding mechanisms are provided on both side supports. Two mounting plates are provided on both the fixed base and the movable base. Multiple conveying rollers are provided on the opposite outer walls of the two mounting plates on the same horizontal plane. Two wire plate grooves are opened on the outer walls of the multiple conveying rollers, and a drive wheel is fixedly connected to one end of each multiple conveying roller. The same drive belt is provided on the outer walls of every two adjacent drive wheels.

[0014] In a preferred embodiment, a conveyor motor is fixedly connected to one outer wall of each of the two mounting plates, and the output shafts of the two conveyor motors are respectively connected to the other end of the two conveyor rollers via couplings. An inspection bracket is provided inside the fixed base, and two vision inspection devices are provided on both the inspection bracket and the fixed base.

[0015] In a preferred embodiment, the detection and cleaning module further includes four mounting brackets, which are respectively fixedly connected to the inner walls of four fixed ports. Four telescopic airbags are respectively disposed inside the four mounting brackets. The outer walls of the multiple negative pressure filter chambers are provided with three cleaning holes, and the outer walls of the multiple negative pressure filter chambers are fixedly connected with negative pressure pipes. The output ends of every two adjacent negative pressure pipes are fixedly connected to the same air pump body, and the output ends of the four air pump bodies are fixedly connected with exhaust pipes and blower pipes.

[0016] In a preferred embodiment, the output ends of the four air blowers are respectively connected to the interior of the four telescopic airbags, the bottom of the four telescopic airbags are fixedly connected to the constriction tubes, the output ends of the four constriction tubes are respectively fixedly connected to the input ends of the four air pump bodies, the outer walls of the four constriction tubes, the four air blowers and the four exhaust pipes are all provided with control valves, and the multiple negative pressure filter chambers are all provided with disassembly covers.

[0017] A method for visually inspecting defects in circuit board manufacturing, using a visual inspection device for circuit board manufacturing defects as described above, includes the following steps:

[0018] Step 1: The circuit board is conveyed by the feeding mechanism and transported to the deflection position;

[0019] Step 2: During deflection, the circuit board is fixed by the detection deflection module, and then deflected to change it from a horizontal state to a vertical state. After deflection, it is pushed into the circuit board slot.

[0020] Step 3: During the push process, the detection and cleaning module runs to clean the surface of the circuit board;

[0021] Step 4: After cleaning, the conveyor motor runs, and through the cooperation of the conveyor motor, drive wheel and drive belt, multiple conveyor rollers run simultaneously to convey the circuit boards inside the board slot. During the conveying process, visual inspection equipment is used to visually inspect for defects.

[0022] As can be seen from the above, the circuit board processing defect visual inspection device provided by the present invention has the effect of increasing the efficiency of defect visual inspection. During inspection, the circuit board can be deflected so that both sides of the circuit board can be inspected at the same time, eliminating the need for secondary visual inspection of circuit boards with undetected defects, thus increasing the effectiveness of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a visual inspection device for circuit board processing defects proposed in this invention.

[0024] Figure 2 This is a schematic diagram of the overall front view structure of a visual inspection device for circuit board processing defects proposed in this invention;

[0025] Figure 3 This is a schematic diagram of the combined structure of a fixed base and visual inspection equipment for a visual inspection device for circuit board processing defects proposed in this invention;

[0026] Figure 4 The present invention proposes Figure 3 Enlarged structural diagram of section A;

[0027] Figure 5 This is a schematic diagram of the detection deflection module structure of a visual inspection device for circuit board processing defects proposed in this invention.

[0028] Figure 6 This is a schematic diagram of the combined structure of a linear lead screw and mounting base of a visual inspection device for circuit board processing defects proposed in this invention;

[0029] Figure 7 This is a schematic diagram of the combined structure of the movable block and the push guide rail of the visual inspection device for defects in circuit board processing proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the combined structure of a lifting plate frame and a fixed suction cup for a visual inspection device for defects in circuit board processing proposed in this invention.

[0031] Figure 9 This is a schematic diagram of the detection and cleaning module structure of a visual inspection device for circuit board processing defects proposed in this invention;

[0032] Figure 10 This is a schematic diagram of the mounting frame and telescopic airbag combination structure of a visual inspection device for circuit board processing defects proposed in this invention.

[0033] In the diagram: 1. Detection base frame; 2. Feeding mechanism; 3. Fixed base; 4. Movable base; 5. Guide rod; 6. Detection deflection module; 601. Mounting frame; 602. Mounting base frame; 603. Deflection motor; 604. Stepper motor; 605. Linear lead screw; 606. Deflection bracket; 607. Detection push frame; 608. Electric push rod; 609. Movable block; 610. Negative pressure pump; 611. Connecting pipe; 612. Fixed sleeve; 613. Push guide rail; 614. Fixed suction cup; 615. Telescopic spring; 616. Electric rod; 617. 618. Connecting cable; 619. Connecting compartment; 7. Lifting plate; 801. Side support; 802. Inspection and cleaning module; 803. Air pump body; 804. Control valve; 805. Removal cover plate; 806. Negative pressure filter compartment; 807. Exhaust pipe; 808. Blower pipe; 809. Negative pressure pipe; 8000. Contraction pipe; 810. Telescopic airbag; 811. Mounting frame; 812. Cleaning hole; 9. Electric telescopic rod; 10. Vision inspection equipment; 11. Drive wheel; 12. Wire plate groove; 13. Conveyor roller; 14. Drive belt; 15. Conveyor motor; 16. Mounting support plate. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] The present invention discloses a visual inspection device for circuit board processing defects, which is mainly used in scenarios where circuit boards often need to be flipped after defect inspection and secondary visual inspection is performed on circuit boards that have not been detected for defects, thus affecting the efficiency of defect visual inspection.

[0036] Reference Figures 1-10 A visual inspection device for defects in circuit board processing includes an inspection base frame 1, a fixed base 3 fixedly connected to the top of the inspection base frame 1, four guide rods 5 fixedly connected to the fixed base 3, the outer walls of the four guide rods 5 being movably connected to the same movable base 4, an inspection deflection module 6 being provided on one side of the inspection base frame 1, four fixing ports being provided at the bottom of the fixed base 3, and an inspection cleaning module 8 being provided inside the four fixing ports, and electric telescopic rods 9 being fixedly connected to both outer walls of the fixed base 3, and the output ends of the four electric telescopic rods 9 being fixedly connected to the two outer walls of the movable base 4 respectively.

[0037] The detection deflection module 6 includes two deflection brackets 606. Both deflection brackets 606 are located on the outside of one side of the fixed base 3, and a push guide rail 613 is fixedly connected to the outer wall of one side of each of the two deflection brackets 606. The detection deflection module 6 is used to deflect the circuit board during visual inspection so that the circuit board can be visually inspected from both sides at the same time, thereby increasing the inspection efficiency.

[0038] The detection and cleaning module 8 includes four telescopic airbags 809 and multiple negative pressure filter chambers 804. Each pair of adjacent negative pressure filter chambers 804 is respectively set on the top of the same telescopic airbag 809. The detection and cleaning module 8 is used to clean the surface of the circuit board to avoid dust or circuit board processing debris residue affecting the detection accuracy.

[0039] Reference Figures 1-3 and Figures 5-8 In a preferred embodiment, the deflection detection module 6 further includes a mounting frame 601, which is fixedly connected to the detection base 1. A linear lead screw 605 is disposed inside the mounting frame 601. The outer wall of the linear lead screw 605 and the inner wall of the mounting frame 601 are provided with the same mounting base 602. Two shaft members are movably connected to the mounting base 602. Two deflection brackets 606 are respectively movably connected to the outer walls of the two shaft members. A stepper motor 604 is fixedly connected to the bottom of the mounting frame 601. The output shaft is connected to the bottom end of the linear lead screw 605 via a coupling; two deflection motors 603 are fixedly connected to one side of the outer wall of the mounting base 602, and the output shafts of the two deflection motors 603 are respectively connected to one end of two shaft members via couplings. Movable blocks 609 are movably connected to both push guide rails 613, and detection push frames 607 are fixedly connected to one side of the outer wall of each of the two movable blocks 609. Four mounting holes are opened on the top of each of the two detection push frames 607, and fixed sleeves 612 are fixedly connected to the inner walls of the multiple mounting holes; the two push... Electric push rods 608 are fixedly connected to one side of the outer wall of the guide rail 613. The output ends of the two electric push rods 608 are fixedly connected to one side of the outer wall of the two movable blocks 609 respectively. Negative pressure pumps 610 are fixedly connected to the top of the two detection pushers 607. Two connecting pipes 611 are fixedly connected to the input ends of the two negative pressure pumps 610. Connecting chambers 618 are fixedly connected to the input ends of the four connecting pipes 611. Two fixed suction cups 614 are fixedly connected to the outer walls of the four connecting chambers 618 through pipes. The multiple fixed suction cups 614 are located in multiple The interior of the fixed frame 612; the top inner walls of the multiple fixed frames 612 are all fixedly connected with telescopic springs 615, the bottom ends of the multiple telescopic springs 615 are respectively fixedly connected to the outer walls of the multiple fixed suction cups 614, and electric rods 616 are fixedly connected to the two detection pushers 607. The output ends of the two electric rods 616 are fixedly connected to lifting plate frames 619, and the bottom of the two lifting plate frames 619 are fixedly connected with multiple connecting cables 617. The bottom ends of the multiple connecting cables 617 are respectively fixedly connected to the top of the multiple fixed suction cups 614.

[0040] Specifically, during deflection, the circuit board is in the deflection position. At this time, the electric rod 616 operates to drive the lifting plate frame 619 to descend, thereby relaxing the connecting cable 617. At this time, the telescopic spring 615 can drive the fixed suction cup 614 to descend, and make the fixed suction cup 614 contact the surface of the circuit board. At this time, the negative pressure pump 610 operates, and the negative pressure pump 610 discharges the gas inside the connecting chamber 618 through the connecting pipe 611, making its interior a negative pressure state to adsorb and fix the circuit board. Then, the deflection motor 603 operates, and the deflection motor 603 drives the shaft rod and the deflection bracket 606 to rotate, thereby deflecting the circuit board, making the circuit board change from a horizontal state to a vertical state. Then, the electric push rod 608 operates, and the electric push rod 608 drives the movable block 609 and the detection push frame 607 to move until the circuit board contacts the wire plate groove 12 on the conveying roller 13.

[0041] In specific application scenarios, the detection deflection module 6 is suitable for the circuit board inspection process. That is, the detection deflection module 6 can deflect the circuit board during inspection, so that both sides of the circuit board can be inspected at the same time. There is no need to perform secondary visual inspection on the circuit board that has not been detected, thereby increasing the inspection efficiency of the device. Moreover, during deflection, the device can adjust the conveying position after deflection according to the size of the circuit board to ensure the operation of the device.

[0042] Reference Figures 1-4 In a preferred embodiment, side supports 7 are fixedly connected to both outer walls of the detection base 1. A feeding mechanism 2 is provided on each of the two side supports 7. Two mounting plates 16 are provided on both the fixed base 3 and the movable base 4. Multiple conveying rollers 13 are provided on the opposite outer walls of the two mounting plates 16 on the same horizontal plane. Two wire plate grooves 12 are opened on the outer walls of the multiple conveying rollers 13. A transmission wheel 11 is fixedly connected to one end of the multiple conveying rollers 13. The same transmission belt 14 is provided on the outer walls of every two adjacent transmission wheels 11. A conveying motor 15 is fixedly connected to one outer wall of each of the two mounting plates 16. The output shafts of the two conveying motors 15 are connected to the other ends of two of the conveying rollers 13 respectively through couplings. A detection bracket is provided inside the fixed base 3. Two vision inspection devices 10 are provided on both the detection bracket and the fixed base 3.

[0043] Specifically, during use, the conveyor motor 15 runs, and through the cooperation of the conveyor motor 15, the transmission wheel 11 and the transmission belt 14, multiple conveyor rollers 13 are driven to run simultaneously to convey the circuit board inside the board slot 12, and during the conveying process, the visual inspection equipment 10 performs visual inspection of defects.

[0044] In specific application scenarios, the conveyor roller 13 and the circuit board groove 12 work together with the detection deflection module 6 to vertically convey the deflected circuit board for inspection; the feeding mechanism 2 is used to feed and convey the circuit board for inspection; multiple vision inspection devices 10 are provided, and during use, defects can be detected on both sides of two circuit boards simultaneously, further increasing inspection efficiency.

[0045] Reference Figure 2 , Figure 3 , Figure 5 , Figure 9 and Figure 10 In a preferred embodiment, the detection and cleaning module 8 further includes four mounting brackets 810, which are respectively fixedly connected to the inner walls of four fixing ports. Four telescopic airbags 809 are respectively disposed inside the four mounting brackets 810. Each of the multiple negative pressure filter chambers 804 has three cleaning holes 811 on its outer wall, and each of the multiple negative pressure filter chambers 804 has a negative pressure pipe 807 fixedly connected to its outer wall. The output ends of every two adjacent negative pressure pipes 807 are fixedly connected to the same air pump body 801. The four air pump bodies 801... Each output end is fixedly connected to an exhaust pipe 805 and an air blower pipe 806; the output ends of the four air blower pipes 806 are respectively connected to the interior of the four telescopic air bags 809; the bottom of each of the four telescopic air bags 809 is fixedly connected to a contraction pipe 808; the output ends of the four contraction pipes 808 are respectively fixedly connected to the input ends of the four air pump bodies 801; the outer walls of the four contraction pipes 808, the four air blower pipes 806 and the four exhaust pipes 805 are all equipped with control valves 802; and multiple negative pressure filter chambers 804 are all equipped with disassembly covers 803.

[0046] Specifically, during cleaning, the air pump body 801 is activated. The air pump body 801 discharges the gas inside the negative pressure filter chamber 804 through the negative pressure pipe 807, creating a negative pressure state inside. This allows the dust or processing residue on the circuit board to be cleaned through the cleaning hole 811, and then drawn into the negative pressure filter chamber 804 for filtration and collection. Simultaneously, the control valve 802 on the blower pipe 806 is opened, and the control valves 802 on the contraction pipe 808 and the exhaust pipe 805 are closed. At this time, the air pump body 801... The gas discharged from the negative pressure filter chamber 804 will enter the blast pipe 806 and inflate the telescopic air bag 809, causing it to expand. Then, the control valve 802 on the blast pipe 806 is closed and the control valves 802 on the contraction pipe 808 and the exhaust pipe 805 are opened. At this time, the air pump body 801 can discharge gas from the negative pressure filter chamber 804 and at the same time discharge gas from the telescopic air bag 809, causing the telescopic air bag 809 to contract, so that the negative pressure filter chamber 804 moves up and down repeatedly until cleaning is completed.

[0047] After use, the cover plate 803 can be disassembled, making it easier for staff to collect and dispose of dust or processing residue.

[0048] In specific application scenarios, the inspection and cleaning module 8 is suitable for the circuit board cleaning process. When in use, the inspection and cleaning module 8 can clean the surface of the circuit board to prevent dust or circuit board processing debris from affecting the inspection accuracy. At the same time, during cleaning, the device can move up and down to change the cleaning position and cleaning range to adapt to the inspection of circuit boards of different sizes. When changing the cleaning position and cleaning range, the device can make the negative pressure filter chamber 804 shake up and down to prevent the dust or processing debris filtered inside from clogging it, thereby ensuring the cleaning effect of the device.

[0049] A method for visually inspecting defects in circuit board manufacturing, using a visual inspection device for circuit board manufacturing defects as described above, includes the following steps:

[0050] Step 1: The circuit board is conveyed by the feeding mechanism 2 and conveyed to the deflection position;

[0051] Step 2: During deflection, the circuit board is in the deflection position. At this time, the electric rod 616 operates to drive the lifting plate frame 619 to descend, thereby relaxing the connecting cable 617. At this time, the telescopic spring 615 can drive the fixed suction cup 614 to descend, and make the fixed suction cup 614 contact the surface of the circuit board. At this time, the negative pressure pump 610 operates, and the negative pressure pump 610 discharges the gas inside the connecting chamber 618 through the connecting pipe 611, making its interior a negative pressure state to adsorb and fix the circuit board. Then, the deflection motor 603 operates, and the deflection motor 603 drives the shaft rod and the deflection bracket 606 to rotate, thereby deflecting the circuit board, making the circuit board change from a horizontal state to a vertical state. Then, the electric push rod 608 operates, and the electric push rod 608 drives the movable block 609 and the detection push frame 607 to move until the circuit board contacts the wire board groove 12 on the conveying roller 13.

[0052] Step 3: During the pushing process, the air pump body 801 is activated. The air pump body 801 discharges the gas inside the negative pressure filter chamber 804 through the negative pressure pipe 807 to create a negative pressure state inside. Then, the dust or processing residue on the circuit board is cleaned through the cleaning hole 811 and sucked into the negative pressure filter chamber 804 for filtration and collection. At the same time as cleaning, the control valve 802 on the blower pipe 806 is opened and the control valves 802 on the contraction pipe 808 and the exhaust pipe 805 are closed. At this time, the air pump body 801... The gas discharged from the negative pressure filter chamber 804 will enter the blast pipe 806 and inflate the telescopic air bag 809, causing it to expand. Then, the control valve 802 on the blast pipe 806 will be closed and the control valves 802 on the contraction pipe 808 and the exhaust pipe 805 will be opened. At this time, the air pump body 801 can discharge the gas from the negative pressure filter chamber 804 and at the same time discharge the gas from the telescopic air bag 809, causing the telescopic air bag 809 to contract, so that the negative pressure filter chamber 804 can move up and down repeatedly until the cleaning is completed.

[0053] Step 4: After cleaning, the conveyor motor 15 runs. Through the cooperation of the conveyor motor 15, the transmission wheel 11 and the transmission belt 14, multiple conveyor rollers 13 are driven to run to convey the circuit boards inside the circuit board groove 12. During the conveying process, the visual inspection equipment 10 performs visual inspection of defects.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A visual inspection device for defects in circuit board processing, comprising an inspection base (1), characterized in that, The top of the detection base (1) is fixedly connected to a fixed base (3), and four guide rods (5) are fixedly connected to the fixed base (3). The outer walls of the four guide rods (5) are movably connected to the same movable base (4). A detection deflection module (6) is provided on one side of the detection base (1). The bottom of the fixed base (3) is provided with four fixed openings, and a detection cleaning module (8) is provided inside the four fixed openings. Electric telescopic rods (9) are fixedly connected to both outer walls of the fixed base (3), and the output ends of the four electric telescopic rods (9) are fixedly connected to the outer walls of both sides of the movable base (4). The detection deflection module (6) includes two deflection brackets (606). Both deflection brackets (606) are located outside one side of the fixed base (3), and a push guide rail (613) is fixedly connected to one side of the outer wall of both deflection brackets (606). The detection deflection module (6) is used to deflect the circuit board during visual inspection so that the circuit board can be visually inspected from both sides at the same time, thereby increasing the inspection efficiency. The detection and cleaning module (8) includes four telescopic airbags (809) and multiple negative pressure filter chambers (804), with each pair of adjacent negative pressure filter chambers (804) respectively located on the top of the same telescopic airbag (809). The detection and cleaning module (8) is used to clean the surface of the circuit board to prevent dust or circuit board processing debris from affecting the detection accuracy. The detection and cleaning module (8) also includes four mounting brackets (810), which are fixedly connected to the inner walls of four fixing ports. The four telescopic airbags (809) are respectively located inside the four mounting brackets (810). Each of the multiple negative pressure filter chambers (804) has three cleaning holes (811) on its outer wall, and each of the multiple negative pressure filter chambers (804) has a negative pressure pipe (807) fixedly connected to its outer wall. Each pair of adjacent negative pressure pipes (807) is fixedly connected to the same air pump body (801) at the output end. The output ends of the four air pump bodies (801) are fixedly connected to exhaust pipes (805) and blow-up pipes (806). The output ends of the four blow-up pipes (806) are respectively connected to the interior of the four telescopic air bags (809). The bottom of the four telescopic air bags (809) is fixedly connected to a contraction pipe (808). The output ends of the four contraction pipes (808) are respectively fixedly connected to the input ends of the four air pump bodies (801). The outer walls of the four contraction pipes (808), the four blow-up pipes (806) and the four exhaust pipes (805) are all equipped with control valves (802). The multiple negative pressure filter chambers (804) are all equipped with disassembly covers (803).

2. The visual inspection device for circuit board processing defects according to claim 1, characterized in that, The detection deflection module (6) also includes a mounting frame (601), which is fixedly connected to the detection base frame (1). A linear lead screw (605) is provided inside the mounting frame (601). The outer wall of the linear lead screw (605) and the inner wall of the mounting frame (601) are provided with the same mounting base frame (602). Two shaft members are movably connected on the mounting base frame (602). Two deflection brackets (606) are movably connected to the outer walls of the two shaft members respectively. A stepper motor (604) is fixedly connected to the bottom of the mounting frame (601). The output shaft of the stepper motor (604) is connected to the bottom end of the linear lead screw (605) through a coupling.

3. The visual inspection device for circuit board processing defects according to claim 2, characterized in that, Two deflection motors (603) are fixedly connected to one side of the outer wall of the mounting base (602). The output shafts of the two deflection motors (603) are connected to one end of two shaft members respectively through couplings. Movable blocks (609) are movably connected to both push guides (613). Detection pushers (607) are fixedly connected to one side of the outer wall of both movable blocks (609). Four mounting holes are opened on the top of both detection pushers (607). Fixed sleeves (612) are fixedly connected to the inner walls of the multiple mounting holes.

4. The visual inspection device for circuit board processing defects according to claim 3, characterized in that, Electric push rods (608) are fixedly connected to one side of the outer wall of each of the two push rails (613). The output ends of the two electric push rods (608) are fixedly connected to one side of the outer wall of each of the two movable blocks (609). Negative pressure pumps (610) are fixedly connected to the top of each of the two detection push frames (607). Two connecting pipes (611) are fixedly connected to the input ends of the two negative pressure pumps (610). Connecting chambers (618) are fixedly connected to the input ends of the four connecting pipes (611). Two fixed suction cups (614) are fixedly connected to the outer walls of the four connecting chambers (618) through pipes. The multiple fixed suction cups (614) are located inside the multiple fixed sleeve frames (612).

5. The visual inspection device for circuit board processing defects according to claim 4, characterized in that, The top inner walls of the multiple fixed sleeve frames (612) are all fixedly connected with telescopic springs (615), the bottom ends of the multiple telescopic springs (615) are respectively fixedly connected to the outer walls of the multiple fixed suction cups (614), and electric rods (616) are fixedly connected to the two detection push frames (607). The output ends of the two electric rods (616) are fixedly connected to lifting plate frames (619), and the bottoms of the two lifting plate frames (619) are fixedly connected with multiple connecting cables (617). The bottom ends of the multiple connecting cables (617) are respectively fixedly connected to the tops of the multiple fixed suction cups (614).

6. The visual inspection device for circuit board processing defects according to claim 5, characterized in that, The detection base (1) is fixedly connected to the outer walls of both sides with side brackets (7), and the two side brackets (7) are equipped with feeding mechanisms (2). The fixed base (3) and the movable base (4) are each equipped with two mounting plates (16). The two mounting plates (16) on the same horizontal plane are equipped with multiple conveying rollers (13) on the opposite outer walls. The outer walls of the multiple conveying rollers (13) are each provided with two wire plate grooves (12), and one end of the multiple conveying rollers (13) is fixedly connected to a transmission wheel (11). The outer walls of every two adjacent transmission wheels (11) are equipped with the same transmission belt (14).

7. The visual inspection device for circuit board processing defects according to claim 6, characterized in that, One of the two mounting plates (16) is fixedly connected to a conveyor motor (15) on one side of its outer wall. The output shafts of the two conveyor motors (15) are connected to the other end of the two conveyor rollers (13) respectively through a coupling. The fixed base (3) is equipped with a detection bracket. Both the detection bracket and the fixed base (3) are equipped with two visual inspection devices (10).

8. A method for visually inspecting defects in circuit board processing, using a visual inspection device for circuit board processing defects as described in claim 7, characterized in that... Includes the following steps: Step 1: The circuit board is conveyed by the feeding mechanism (2) and conveyed to the deflection position; Step 2: During deflection, the circuit board is fixed by the detection deflection module (6), and after fixing, it is deflected to change from a horizontal state to a vertical state, and then pushed into the circuit board slot (12) after deflection. Step 3: During the push process, the detection and cleaning module (8) runs to clean the surface of the circuit board; Step 4: After cleaning, the conveyor motor (15) runs. Through the cooperation of the conveyor motor (15), the drive wheel (11) and the drive belt (14), multiple conveyor rollers (13) are driven to run simultaneously to convey the circuit board inside the board slot (12). During the conveying process, the visual inspection equipment (10) performs visual inspection on the board for defects.

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