A PCB circuit board structure and its detection and sorting equipment

Abstract

The present invention relates to the field of circuit board detection, and in particular to a PCB circuit board structure and its detection and sorting equipment, comprising an equipment shell, wherein two wheel seats are symmetrically fixedly installed in the middle of the inner side of the equipment shell, two groups of wheel rods are symmetrically installed between the two wheel seats, the outer surfaces of the two groups of wheel rods are coaxially inlaid with multiple dispersion wheels, the dispersion wheels on the two groups of wheel rods are staggered, multiple inspection wheels are arranged on both sides of the wheel rods, the inspection wheels are connected to the wheel seats, a PCB circuit board is placed on the upper end of the inspection wheels, two upper shooting cameras are symmetrically fixedly installed on the inner upper part of the equipment shell, and two groups of lower shooting cameras are symmetrically installed on the inner lower part of the equipment shell. The present invention improves the detection efficiency, and at the same time improves the protection of the PCB circuit board during detection, and can also cut unqualified PCB circuit boards, which is convenient for use.

Description

Technical Field

[0001] The present invention relates to the field of circuit board detection, and in particular to a PCB circuit board structure and detection and sorting equipment thereof. Background Art

[0002] Printed circuit boards are an indispensable basic component of modern electronic devices. They are a support body that provides interconnection between electronic components. They are made by electronic printing and are conductive patterns used for electrical connection of electronic components. The design and manufacturing quality of PCBs directly affect the performance, reliability and cost of electronic products. In the process of processing PCBs, AOI inspection equipment is often used to shoot and inspect both sides of the PCB to detect whether there are copper leaks, scratches, indentations, discoloration, water stains, foreign matter, etc. on the surface of the PCB.

[0003] When the existing AOI inspection equipment inspects both sides of some large uncut PCB circuit boards, it is blocked by the conveying roller below, so that after the upper end of the PCB circuit board is photographed, the PCB circuit board needs to be turned over so that its lower end faces upward for photographing, so as to complete the image acquisition of both sides of the PCB circuit board. This operation mode, on the one hand, since the uncut PCB circuit board has a large area and is very thin, it is very easy to cause the uncut PCB circuit board to be damaged during the flipping process; on the other hand, because it needs to be photographed twice, the shooting time is increased, which affects the inspection efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a PCB circuit board structure and its detection and sorting equipment.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a PCB circuit board structure and its detection and sorting equipment, including an equipment shell, two wheel seats are symmetrically fixedly installed in the middle of the inner side of the equipment shell, two groups of wheel rods are symmetrically installed between the two wheel seats, the outer surfaces of the two groups of wheel rods are coaxially inlaid with multiple dispersion wheels, the dispersion wheels on the two groups of wheel rods are staggered, multiple inspection wheels are arranged on both sides of the wheel rods, the inspection wheels are connected to the wheel seats, and a PCB circuit board is placed on the upper end of the inspection wheel, two upper shooting cameras are symmetrically fixedly installed on the upper inner side of the equipment shell, two groups of lower shooting cameras are symmetrically installed on the lower inner side of the equipment shell, the shooting areas of the two groups of lower shooting cameras correspond to the dispersion wheels on the two groups of wheel rods respectively, and the number of each group of lower shooting cameras is two, and a lower plate is arranged on the side of the equipment shell.

[0006] Preferably, a supporting frame is fixedly installed on the inner bottom surface of the device shell, the lower shooting camera is fixed on the supporting frame, a lower fill light is arranged on the upper side of the lower shooting camera, the lower fill light is fixed to the supporting frame, the lighting area of ​​the lower fill light corresponds to the shooting area of ​​the lower shooting camera, and an upper fill light is arranged on the lower side of the upper shooting camera, the lighting area of ​​the upper fill light corresponds to the shooting area of ​​the upper shooting camera.

[0007] Preferably, two groups of pressure wheels are symmetrically installed between the two wheel seats, the shooting area of ​​the upper shooting camera corresponds to between the two groups of pressure wheels, the number of pressure wheels in each group is two, the pressure wheels are located above the inspection wheel, the two groups of pressure wheels correspond to between two groups of wheel rods, the number of wheel rods in each group is two, and the dispersion wheels on the two wheel rods are staggered.

[0008] Preferably, the lower plate includes a fixing frame arranged on the side of the equipment shell, an end of the fixing frame is fixed to the front wheel seat, the length of the front wheel seat is shorter than the rear wheel seat, a plurality of delivery wheels are arranged on the side of the inspection wheel, the rear end of the delivery wheel is connected to the rear wheel seat, the spacing between the plurality of delivery wheels is greater than the spacing between the plurality of inspection wheels, and a wheel bracket is rotatably mounted on the front end of the delivery wheel, and the end of the wheel bracket is fixed to the fixing frame.

[0009] Preferably, a movable frame is provided in the upper front of the fixed frame, and a plurality of guide frames are evenly distributed and fixedly installed at the ends of the movable frame, the movable frame is located in front of the wheel bracket, and the plurality of guide frames are located between the plurality of delivery wheels, and a top plate seat is fittedly installed inside the guide frame, and the top plate seat passes through the upper and lower ends of the guide frame, and top columns are slidably installed through the front and rear ends of the guide frame, the upper end of the top column is fixed to the top plate seat, and a top frame is fixedly installed between the lower ends of the two top columns at the front and rear.

[0010] Preferably, a limiting cap is coaxially inlaid on the outer surface of the top column, and the limiting cap is fitted to the upper end of the guide frame. A return spring is wound around the outer side of the top column, and both ends of the return spring are respectively fixed to the lower end of the guide frame and the upper end of the top frame. A frame body is fixedly installed on the outer surface of the top frame, and an extending column is extended from the side of the frame body. A connecting sleeve is fitted on the outer surface of the extending column, and limiting rings are fitly installed on both ends of the connecting sleeve. The limiting ring is inlaid on the outer surface of the extending column, and swing plates are extended from the front and rear ends of the connecting sleeve. A limiting block is fixedly installed on one end of the frame body, and the limiting block is fitted to the swing plate at the rear.

[0011] Preferably, a connecting column is rotatably installed on the other end of the frame body, and a connecting shell is rotatably installed on the upper end of the front swing plate, and the end of the connecting column slides through the interior of the connecting shell, and the outer surface of the connecting column and the outer surface of the connecting shell are extended with protruding edges, and an offset spring is embedded between the two protruding edges, and a wheel frame is fixedly installed between the lower ends of the two swing plates, and a top wheel is installed inside the wheel frame, and a top rail is fitted on the lower part of the top wheel, and the top rail is fixed on the fixed frame, and the front and rear ends of the top rail are inclined, and a servo push cylinder is fixedly installed on the lower end of the fixed frame, and a support frame is fixedly installed on the output end of the servo push cylinder, and the upper end of the support frame is fixed to the movable frame, and guide rods are provided on both sides of the servo push cylinder, and the guide rods are slidably installed on the fixed frame.

[0012] Preferably, an extension frame is fixedly installed at the front end of the wheel seat in the front, and a sleeve is fixedly installed at the front end of the extension frame. A bearing column is fittedly installed inside the sleeve, and the bearing column passes through one side of the sleeve. A plurality of placement racks are extended in a linear array at the rear end of the bearing column. The height of the movable rack is lower than the height of the placement rack. A plurality of top plate seats correspond to a plurality of placement racks. A limiting ear extends at the lower end edge of the bearing column, and the limiting ear passes through the lower end of the sleeve, and the limiting ear is slidably matched with the sleeve.

[0013] Preferably, a round shell is fixedly installed on the upper end of the extending frame, and a fixing pin is coaxially arranged inside the round shell. The fixing pin slides through the upper and lower ends of the round shell, and a pressure ring is coaxially inlaid on the outer surface of the fixing pin. The pressure ring fits the inner wall of the round shell, and a compression spring is wound around the outer side of the fixing pin. The two ends of the compression spring are respectively fixed to the upper end of the pressure ring and the upper end of the inner part of the round shell, and the lower end of the fixing pin slides through the upper end of the sleeve and the upper end of the bearing column in turn.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the staggered arrangement of dispersion wheels on two groups of wheel rods, when one group of lower shooting cameras is shooting the lower end of the PCB circuit board, the dispersion wheels on one group of wheel rods will block the lower end of the PCB circuit board. When the PCB circuit board moves to the shooting area of ​​the other group of lower shooting cameras, due to the staggered arrangement of dispersion wheels, the other group of dispersion wheels will block other areas of the lower end of the PCB circuit board, and the area blocked by one group of dispersion wheels is exposed to be shot by the other group of lower shooting cameras. In this way, the two groups of lower shooting cameras alternately shoot to fully shoot the lower end of the PCB circuit board, and the upper shooting camera above fully shoots the upper end of the PCB circuit board, so as to shoot two sides at the same time, shorten the shooting time, improve the detection efficiency, and there is no need to turn over the PCB circuit board during the detection process, which effectively avoids damage to the PCB circuit board and improves the protection of the PCB circuit board during detection.

[0016] 2. The moving frame can be driven to move forward synchronously by the moving frame. At this time, the limiting block supports the swing plate at the rear to keep the wheel frame upright, and the top wheel rolls on the rear end slope of the top rail to drive the top frame to move up, thereby driving multiple top plate seats to move up, so as to lift the PCB circuit board off the delivery wheel and be driven to move forward to the top of the placement rack. At this time, the top wheel is detached from the top rail, allowing the top plate seat to move down without the support of the top rail, so as to place the PCB circuit board on the placement rack to complete the unloading. The process does not require manual unloading by workers, which effectively facilitates the use. At the same time, by lifting and moving the PCB circuit board forward, the PCB circuit board can be prevented from rubbing against the delivery wheel, the placement rack, etc. during the forward movement, thereby causing secondary damage to the PCB circuit board, thereby further improving the protection of the PCB circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a PCB circuit board structure and its detection and sorting equipment of the present invention;

[0018] Figure 2 This is an internal view of a PCB circuit board structure and a detection and sorting device thereof according to the present invention;

[0019] Figure 3 A PCB circuit board structure and a detection and sorting device thereof of the present invention Figure 2 A magnified view of middle;

[0020] Figure 4 This is a schematic diagram of a PCB circuit board structure and a carrier frame of a detection and sorting device thereof according to the present invention;

[0021] Figure 5 It is a schematic diagram of a PCB circuit board structure and a delivery wheel of a detection and sorting device thereof according to the present invention;

[0022] Figure 6 A PCB circuit board structure and a detection and sorting device thereof of the present invention Figure 5 Enlarged view of middle B;

[0023] Figure 7 This is a schematic diagram of a PCB circuit board structure and a bearing column of a detection and sorting device thereof according to the present invention;

[0024] Figure 8 This is an internal view of a circular shell of a PCB circuit board structure and a detection and sorting device thereof according to the present invention;

[0025] Fig. 9 This is a bottom view of a PCB circuit board structure and a fixing frame of a detection and sorting device thereof according to the present invention;

[0026] Fig.10 The present invention is a schematic diagram of a PCB circuit board structure and a wheel frame of a detection and sorting device thereof.

[0027] In the figure: 1, equipment shell; 2, inspection wheel; 3, wheel seat; 4, extension frame; 5, delivery wheel; 6, upper camera; 7, bearing column; 8, upper fill light; 9, pressure wheel; 10, bearing frame; 11, lower camera; 12, top plate seat; 13, wheel frame; 14, top frame; 15, guide frame; 16, top column; 17, mobile frame; 18, support frame; 19, top rail; 20, fixed frame; 21, dispersion wheel; 22, wheel rod; 23, extension column; 24, limit ring; 25 , swing plate; 26, connecting sleeve; 27, top wheel; 28, limit block; 29, frame; 30, connecting column; 31, offset spring; 32, connecting shell; 33, extending edge; 34, round shell; 35, fixing pin; 36, pressing ring; 37, pressing spring; 38, plug sleeve; 39, limit ear; 40, placement rack; 41, lower fill light; 42, servo push cylinder; 43, guide rod; 44, wheel bracket; 45, reset spring; 46, limit cap; 47, PCB circuit board. DETAILED DESCRIPTION

[0028] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0029] like Figure 1-Figure 10The PCB circuit board structure and its detection and sorting equipment shown in the figure include an equipment shell 1, two wheel seats 3 are symmetrically fixedly installed in the middle of the inner side of the equipment shell 1, two groups of wheel rods 22 are symmetrically installed between the two wheel seats 3, and the outer surfaces of the two groups of wheel rods 22 are coaxially inlaid with multiple dispersion wheels 21, and the wheel rods 22 play the role of bearing the dispersion wheels 21. The dispersion wheels 21 on the two groups of wheel rods 22 are staggered, and the lower end of the PCB circuit board 47 can be alternately covered during the transportation of the PCB circuit board 47, so as to facilitate the downward shooting of the camera. The machine 11 takes a comprehensive photograph of the lower end of the PCB circuit board 47. A plurality of inspection wheels 2 are arranged on both sides of the wheel rod 22. The inspection wheels 2 are used to transport the PCB circuit board 47. The inspection wheels 2 are connected to the wheel seat 3. The inspection wheels 2, the wheel rod 22 and the pressure wheel 9 are driven to rotate by magnetic wheel transmission, so as to reduce the shaking of the PCB circuit board 47 during the transportation process. The PCB circuit board 47 is placed on the upper end of the inspection wheel 2. Two upper shooting cameras 6 are symmetrically fixedly installed on the inner upper part of the device shell 1. The two upper shooting cameras 6 can The device shell 1 is a device that can shoot the front and rear parts of the upper end of the large PCB circuit board 47 respectively, and combine the two sets of images after shooting to obtain the entire image information of the upper end of the PCB circuit board 47. Similarly, the two sets of lower shooting cameras 11 respectively shoot the positions of the lower end of the PCB circuit board 47 that are alternately blocked by the dispersion wheel 21, and combine the two sets of images after shooting to obtain the entire image information of the lower end of the PCB circuit board 47. Then, the captured images are compared with the standard images to determine whether the PCB circuit board 47 is qualified. Since the above-mentioned image shooting, merging and comparison techniques are existing technologies and have been widely used, they are not elaborated in detail here. Two sets of lower shooting cameras 11 are symmetrically installed on the lower inner side of the device shell 1. The shooting areas of the two sets of lower shooting cameras 11 correspond to the dispersion wheels 21 on the two sets of wheel rods 22 respectively. There are two lower shooting cameras 11 in each set, which can shoot the front and rear parts of the lower end of the large PCB circuit board 47 respectively, so as to adapt to the size of the PCB circuit board 47 for comprehensive shooting. A lower plate is arranged on the side of the device shell 1.

[0030] A carrier frame 10 is fixedly installed on the inner bottom surface of the device shell 1, and the lower camera 11 is fixed on the carrier frame 10. The carrier frame 10 serves to support the lower camera 11. A lower fill light 41 is arranged on the upper side of the lower camera 11. The lower fill light 41 is fixed to the carrier frame 10. The lighting area of ​​the lower fill light 41 corresponds to the shooting area of ​​the lower camera 11. The lower fill light 41 serves to increase the brightness for the lower camera 11 to shoot. An upper fill light 8 is arranged on the lower side of the upper camera 6. The lighting area of ​​the upper fill light 8 corresponds to the shooting area of ​​the upper camera 6. The upper fill light 8 can increase the brightness for the upper camera 6 to shoot.

[0031] Two groups of pressure wheels 9 are symmetrically installed between the two wheel seats 3. The shooting area of ​​the upper shooting camera 6 corresponds to between the two groups of pressure wheels 9. There are two pressure wheels 9 in each group. The pressure wheels 9 can firmly press the shooting area of ​​the PCB circuit board 47 onto the inspection wheel 2 and the dispersion wheel 21 to avoid shaking when the PCB circuit board 47 moves. The pressure wheels 9 are located above the inspection wheel 2. The two groups of pressure wheels 9 correspond to between the two groups of wheel rods 22. There are two wheel rods 22 in each group. The dispersion wheels 21 on the two wheel rods 22 are staggered, which can reduce the distance between the two wheel rods 22, thereby increasing the supporting surface of the dispersion wheel 21 for the PCB circuit board 47, so that the PCB circuit board 47 can be fully supported and stably transported.

[0032] The lower plate includes a fixing frame 20 arranged on the side of the equipment shell 1, and the end of the fixing frame 20 is fixed to the front wheel seat 3. The length of the front wheel seat 3 is shorter than that of the rear wheel seat 3, so that the guide frame 15 can move forward normally without being hindered. A plurality of delivery wheels 5 are arranged on the side of the inspection wheel 2, and the rear end of the delivery wheel 5 is connected to the rear wheel seat 3. The delivery wheel 5 serves to deliver the PCB circuit board 47. The spacing between the plurality of delivery wheels 5 is greater than the spacing between the plurality of inspection wheels 2. By making the plurality of inspection wheels 2 fit closely to each other, the supporting surface of the PCB circuit board 47 can be increased, so that the PCB circuit board 47 can be fully supported and stably transported. The front end of the delivery wheel 5 is rotatably installed with a wheel bracket 44, and the end of the wheel bracket 44 is fixed to the fixing frame 20. The wheel bracket 44 serves to connect the delivery wheel 5.

[0033] A movable frame 17 is provided at the upper front of the fixed frame 20, and a plurality of guide frames 15 are evenly distributed and fixedly installed at the ends of the movable frame 17. The movable frame 17 is located in front of the wheel bracket 44, so that the movable frame 17 can move forward without being hindered. The plurality of guide frames 15 are located between the plurality of delivery wheels 5. A top plate seat 12 is fittedly installed inside the guide frame 15, and the guide frame 15 plays a role of supporting the top plate seat 12. The top plate seat 12 extends from the upper and lower ends of the guide frame 15, and the front and rear ends of the guide frame 15 are both penetrated by a top column 16 that is slidably installed. The top plate seat 12 plays a role of lifting the PCB circuit board 47 for movement, and the upper end of the top column 16 is fixed to the top plate seat 12, and the top column 16 plays a role of lifting the top plate seat 12, and a top frame 14 is fixedly installed between the lower ends of the two top columns 16 at the front and rear.

[0034] The outer surface of the top column 16 is coaxially inlaid with a limit cap 46, which is fitted to the upper end of the guide frame 15. The limit cap 46 serves to limit the downward position of the top plate seat 12. A return spring 45 is wound around the outer side of the top column 16. The two ends of the return spring 45 are respectively fixed to the lower end of the guide frame 15 and the upper end of the top frame 14. The return spring 45 serves to reset the top plate seat 12 downward. The outer surface of the top frame 14 is fixedly installed with a frame body 29, and a protruding column 23 extends from the side of the frame body 29. The outer surface of the protruding column 23 is fitted with a connecting The connecting sleeve 26 and the extending column 23 serve to allow the connecting sleeve 26 to rotate. Both ends of the connecting sleeve 26 are fitted with limit rings 24, which are embedded in the outer surface of the extending column 23. The limit rings 24 prevent the connecting sleeve 26 and the extending column 23 from separating. The front and rear ends of the connecting sleeve 26 are extended with swing plates 25, and one end of the frame body 29 is fixedly installed with a limiting block 28, which is fitted on the rear swing plate 25. The limiting block 28 can limit the rear swing plate 25 so that the wheel frame 13 will not rotate backward and tilt.

[0035] A connecting column 30 is rotatably mounted on the other end of the frame body 29, and a connecting shell 32 is rotatably mounted on the upper end of the front swing plate 25. The end of the connecting column 30 slides through the interior of the connecting shell 32, and the connecting column 30 can slide in the connecting shell 32 to adapt to the forward rotation and tilting movement of the wheel frame 13. The outer surface of the connecting column 30 and the outer surface of the connecting shell 32 are both extended with an extended edge 33, and a compensation spring 31 is embedded between the two extended edges 33. The extended edge 33 plays a role in bearing the compensation spring 31, and the compensation spring 31 plays a role in adapting to the forward rotation and tilting movement of the wheel frame 13. The wheel frame 13 is fixedly mounted between the lower ends of the two swing plates 25. A top wheel 27 is installed inside the wheel frame 13, and the wheel frame 13 plays a role in supporting the top wheel 27. A top rail 19 is installed in a close fit at the lower part of the top wheel 27, and the top rail 19 is fixed on the fixed frame 20. The front and rear ends of the top rail 19 are inclined. A servo push cylinder 42 is fixedly installed at the lower end of the fixed frame 20, and a support frame 18 is fixedly installed at the output end of the servo push cylinder 42. The servo push cylinder 42 plays a role in driving the moving frame 17 to move. The upper end of the support frame 18 is fixed to the moving frame 17, and guide rods 43 are arranged on both sides of the servo push cylinder 42. The support frame 18 plays a connecting role, and the guide rods 43 are slidably installed on the fixed frame 20, and the guide rods 43 play a guiding role.

[0036] The front end of the front wheel seat 3 is fixedly installed with an extension frame 4, and the front end of the extension frame 4 is fixedly installed with a sleeve 38, and the extension frame 4 plays a role of fixing the sleeve 38, and a bearing column 7 is fitted inside the sleeve 38, and the bearing column 7 passes through one side of the sleeve 38, and the sleeve 38 plays a role of plugging with the bearing column 7, and a plurality of placement racks 40 are extended from the rear end linear array of the bearing column 7, and the placement racks 40 play a role of supporting large PCB circuit boards 47, and the height of the mobile frame 17 is lower than the height of the placement racks 40, which can ensure that the movement of the mobile frame 17 will not be obstructed, and a plurality of top plate seats 12 correspond to a plurality of placement racks 40, and a limiting ear 39 extends at the lower end edge of the bearing column 7, and the limiting ear 39 passes through the lower end of the sleeve 38, and the limiting ear 39 plays a role of preventing the bearing column 7 from rotating, and the limiting ear 39 and the sleeve 38 are slidably matched.

[0037] A circular shell 34 is fixedly installed on the upper end of the extension frame 4, and a fixing pin 35 is coaxially arranged inside the circular shell 34. The circular shell 34 plays a role of supporting the fixing pin 35. The fixing pin 35 slides through the upper and lower ends of the circular shell 34, and the outer surface of the fixing pin 35 is coaxially inlaid with a pressure ring 36. The pressure ring 36 fits the inner wall of the circular shell 34, and the pressure ring 36 plays the role of being pushed by a compression spring 37. A compression spring 37 is wrapped around the outer side of the fixing pin 35, and the two ends of the compression spring 37 are respectively fixed to the upper end of the pressure ring 36 and the upper end of the inner part of the circular shell 34. The compression spring 37 plays a role of pushing the fixing pin 35 to between the sleeve 38 and the bearing column 7 for fixing. The lower end of the fixing pin 35 slides through the upper end of the sleeve 38 and the upper end of the bearing column 7 in turn.

[0038] When in use, the PCB circuit board 47 is placed on the inspection wheel 2, and the PCB circuit board 47 is passed through the device shell 1 by the rotating inspection wheel 2. During this process, the two upper shooting cameras 6 located above will shoot the upper end of the PCB circuit board 47, and one group of lower shooting cameras 11 will shoot the lower end of the PCB circuit board 47. During this process, the lower end of the PCB circuit board 47 will be blocked by the dispersion wheels 21 on one group of wheel rods 22, so that one group of lower shooting cameras 11 can only shoot a local area of ​​the lower end of the PCB circuit board 47. When the PCB circuit board 47 continues to move to the other group of dispersion wheels 21, under the action of the two groups of dispersion wheels 21 arranged in a staggered manner, the other group of dispersion wheels 21 will shoot the PCB circuit board 47. The other areas at the lower end of the PCB circuit board 47 are shielded, so that the area shielded by one group of dispersion wheels 21 is exposed, so that the other group of lower shooting cameras 11 can shoot the shielded part, so that the two groups of lower shooting cameras 11 alternately shoot to fully shoot the lower end of the PCB circuit board 47, so as to collect an image, and then compare the collected image with the standard image to determine whether the PCB circuit board 47 is qualified. If the PCB circuit board 47 is qualified, it will be sent to the next station for packaging by the delivery wheel 5. If the PCB circuit board 47 is unqualified, the servo push cylinder 42 will drive the mobile frame 17 to move forward. At this time, the guide rod 43 slides on the fixed frame 20 to guide the mobile frame 17 so as to pass the moving mobile frame 17, driving multiple guide frames 15 to move forward synchronously. At this time, the limiting block 28 supports the swing plate 25 at the rear, so that the wheel frame 13 remains upright, and the top wheel 27 rolls on the rear end inclined surface of the top rail 19 to drive the top frame 14 to move up, thereby driving multiple top plate seats 12 to move up, so as to lift the PCB circuit board 47 off the delivery wheel 5, and be driven to move forward to the top of the placement rack 40. At this time, the top wheel 27 is separated from the top rail 19, allowing the top plate seat 12 to move down without the support of the top rail 19, so as to place the PCB circuit board 47 on the placement rack 40, and then the mobile rack 17 moves in the opposite direction. At this time, the top wheel 27 moves to the front end inclined surface of the top rail 19, and is blocked by it to drive the connecting sleeve 26 to rotate on the extending column 23, so that the wheel frame 13 tilts. At this time, the connecting column 30 slides in the connecting shell 32 to offset the contraction deformation of the spring 31, so that the wheel frame 13 can move normally. Under the action of the inclination of the wheel frame 13, when the movable frame 17 moves in the reverse direction to drive the guide frame 15 to reset, when the top wheel 27 rolls on the top rail 19 again, there will be no supporting effect, that is, the top plate seat 12 will not move up, so as to ensure that the PCB circuit board 47 will not be lifted up again by the top plate seat 12 and moved after being placed on the placement frame 40. When the top plate seat 12 and the guide frame 15 are reset, the fixing pin 35 is directly pulled to disengage the fixing pin 35 from between the bearing column 7 and the socket 38, and then the bearing column 7 can be pulled out of the socket 38, that is, the bearing column 7 can be removed, and then the placement frame 40 can be supported.The unqualified PCB circuit board 47 is sent to the repair area for repair.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A PCB circuit board structure and a detection and sorting device thereof, comprising a device housing (1), characterized in that: Two wheel seats (3) are symmetrically fixedly installed in the middle of the inner side of the device shell (1), two groups of wheel rods (22) are symmetrically installed between the two wheel seats (3), the outer surfaces of the two groups of wheel rods (22) are coaxially inlaid with a plurality of dispersion wheels (21), the dispersion wheels (21) on the two groups of wheel rods (22) are staggered, a plurality of inspection wheels (2) are arranged on both sides of the wheel rods (22), the inspection wheels (2) are connected to the wheel seats (3), a PCB circuit board (47) is placed on the upper end of the inspection wheel (2), two upper shooting cameras (6) are symmetrically fixedly installed in the upper inner side of the device shell (1), two groups of lower shooting cameras (11) are symmetrically installed in the lower inner side of the device shell (1), the shooting areas of the two groups of lower shooting cameras (11) correspond to the dispersion wheels (21) on the two groups of wheel rods (22), and the number of each group of lower shooting cameras (11) is two, and a lower plate is arranged on the side of the device shell (1); The lower plate comprises a fixing frame (20) arranged on the side of the equipment shell (1), the end of the fixing frame (20) is fixed to the front wheel seat (3), the length of the front wheel seat (3) is shorter than the rear wheel seat (3), a plurality of delivery wheels (5) are arranged on the side of the inspection wheel (2), the rear end of the delivery wheel (5) is connected to the rear wheel seat (3), the spacing between the plurality of delivery wheels (5) is greater than the spacing between the plurality of inspection wheels (2), and a wheel bracket (44) is rotatably mounted on the front end of the delivery wheel (5), and the end of the wheel bracket (44) is fixed to the fixing frame (20); A movable frame (17) is arranged above the front of the fixed frame (20), and a plurality of guide frames (15) are evenly distributed and fixedly installed at the ends of the movable frame (17), the movable frame (17) is located in front of the wheel bracket (44), and the plurality of guide frames (15) are located between the plurality of delivery wheels (5), a top plate seat (12) is fittedly installed inside the guide frame (15), the top plate seat (12) passes through the upper and lower ends of the guide frame (15), and a top column (16) is slidably installed through the front and rear ends of the guide frame (15), the upper end of the top column (16) is fixed to the top plate seat (12), and a top frame (14) is fixedly installed between the lower ends of the two top columns (16) at the front and rear ends; A limit cap (46) is coaxially inlaid on the outer surface of the top column (16), and the limit cap (46) is fitted on the upper end of the guide frame (15). A return spring (45) is wound around the outer side of the top column (16), and the two ends of the return spring (45) are respectively fixed to the lower end of the guide frame (15) and the upper end of the top frame (14). A frame body (29) is fixedly installed on the outer surface of the top frame (14). A protruding column (23) extends from the side of the frame body (29). A connecting sleeve (26) is fitted on the outer surface of the protruding column (23). Both ends of the connecting sleeve (26) are fitted with limit rings (24), and the limit ring (24) is inlaid on the outer surface of the protruding column (23). Swinging plates (25) are extended from the front and rear ends of the connecting sleeve (26). A limit block (28) is fixedly installed on one end of the frame body (29), and the limit block (28) is fitted on the rear swinging plate (25). A connecting column (30) is rotatably mounted on the other end of the frame body (29); a connecting shell (32) is rotatably mounted on the upper end of the front swing plate (25); an end of the connecting column (30) slides through the interior of the connecting shell (32); an outer surface of the connecting column (30) and an outer surface of the connecting shell (32) both extend with a protruding edge (33); a counteracting spring (31) is embedded between the two protruding edges (33); a wheel frame (13) is fixedly mounted between the lower ends of the two swing plates (25); a top wheel (31) is mounted inside the wheel frame (13) 27), a top rail (19) is fitted on the lower part of the top wheel (27), the top rail (19) is fixed on the fixed frame (20), the front and rear ends of the top rail (19) are inclined, a servo push cylinder (42) is fixedly installed on the lower end of the fixed frame (20), a support frame (18) is fixedly installed on the output end of the servo push cylinder (42), the upper end of the support frame (18) is fixed to the moving frame (17), and guide rods (43) are provided on both sides of the servo push cylinder (42), and the guide rods (43) are slidably installed on the fixed frame (20); The front end of the wheel seat (3) in the front is fixedly mounted with an extension frame (4), the front end of the extension frame (4) is fixedly mounted with a plug sleeve (38), the interior of the plug sleeve (38) is fitted with a bearing column (7), the bearing column (7) extends from one side of the plug sleeve (38), a plurality of placement frames (40) are extended in a linear array at the rear end of the bearing column (7), the height of the movable frame (17) is lower than the height of the placement frame (40), a plurality of top plate seats (12) correspond to a plurality of placement frames (40), a limiting ear (39) extends from the lower end edge of the bearing column (7), the limiting ear (39) extends from the lower end of the plug sleeve (38), and the limiting ear (39) is slidably matched with the plug sleeve (38); A round shell (34) is fixedly mounted on the upper end of the extension frame (4), a fixing pin (35) is coaxially arranged inside the round shell (34), the fixing pin (35) slides through the upper and lower ends of the round shell (34), a pressure ring (36) is coaxially inlaid on the outer surface of the fixing pin (35), the pressure ring (36) is fitted to the inner wall of the round shell (34), a compression spring (37) is wound around the outer side of the fixing pin (35), the two ends of the compression spring (37) are respectively fixed to the upper end of the pressure ring (36) and the upper end of the inner part of the round shell (34), and the lower end of the fixing pin (35) slides through the upper end of the plug sleeve (38) and the upper end of the bearing column (7) in sequence.

2. A PCB circuit board structure and its detection and sorting equipment according to claim 1, characterized in that: A carrier frame (10) is fixedly mounted on the inner bottom surface of the device shell (1), the lower shooting camera (11) is fixed on the carrier frame (10), a lower fill light (41) is arranged on the upper side of the lower shooting camera (11), the lower fill light (41) is fixed to the carrier frame (10), the lighting area of ​​the lower fill light (41) corresponds to the shooting area of ​​the lower shooting camera (11), and an upper fill light (8) is arranged on the lower side of the upper shooting camera (6), the lighting area of ​​the upper fill light (8) corresponds to the shooting area of ​​the upper shooting camera (6).

3. A PCB circuit board structure and its detection and sorting equipment according to claim 1, characterized in that: Two groups of pressure wheels (9) are symmetrically installed between the two wheel seats (3); the shooting area of ​​the upper shooting camera (6) corresponds to between the two groups of pressure wheels (9); the number of each group of pressure wheels (9) is two; the pressure wheels (9) are located above the inspection wheel (2); the two groups of pressure wheels (9) correspond to between two groups of wheel rods (22); the number of each group of wheel rods (22) is two; and the dispersion wheels (21) on the two wheel rods (22) are staggered.

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