PCB welding spot detection device

Abstract

The utility model belongs to the technical field of PCBs, and particularly relates to a PCB welding spot detection device which comprises a supporting frame and a defective product box, a conveying belt is fixedly installed at the upper end of the supporting frame, a fixing frame is arranged at the bottom of the left end of the conveying belt, and a baffle is fixedly installed at the upper end of the left side of the fixing frame; and an electric telescopic rod is fixedly installed on the inner wall of the right side of the fixing frame, the output end of the electric telescopic rod is fixedly connected with a push plate, and a PCB is movably placed in the defective product box. According to the utility model, a worker conveys PCBs with unqualified welding spots to the conveyor belt, then the PCBs are moved from the left end of the conveyor belt to the defective product box to be collected, then the electric telescopic rod is started, the electric telescopic rod pushes the partition plate to rotate through the push plate, and then the partition plate gradually pushes the PCBs, so that the PCBs are stored and arranged in the defective product box; and meanwhile, the partition plate can drive the ratchet wheel to rotate in the fixing block through the connecting column in the rotating process.

Description

Technical Field

[0001] This utility model relates to the field of PCB board technology, and specifically to a PCB board solder joint detection device. Background Technology

[0002] PCB, or Printed Circuit Board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnection. Because it is manufactured using electronic printing technology, it is called a "printed" circuit board. Almost every electronic device, from small electronic watches and calculators to large computers, communication electronic equipment, and military weapon systems, uses printed circuit boards to enable electrical interconnection between integrated circuits and other electronic components. During the PCB manufacturing process, solder joint inspection is required.

[0003] Based on the above, those skilled in the art have made technical improvements and proposed a PCB board solder joint inspection device with application number CN222506142U. In the process of using this technical solution, PCB boards with unqualified solder joints can be conveyed to the defective box by a second conveyor belt. However, this technical solution does not have a buffer and sorting device during the process of the PCB board falling into the defective box, which will damage the PCB board with unqualified solder joints, affect the repair of the PCB board, and cause waste of resources. At the same time, it requires workers to manually sort the PCB boards with unqualified solder joints, which increases labor costs. Utility Model Content

[0004] The main objective of this disclosure is to provide a PCB board solder joint inspection device to effectively solve the problems raised by the inventors in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A PCB board solder joint inspection device includes a support frame and a defective product box. A conveyor belt is fixedly installed on the upper end of the support frame. A fixed frame is provided at the bottom left end of the conveyor belt. A baffle is fixedly installed on the upper left side of the fixed frame. An electric telescopic rod is fixedly installed on the inner right side of the fixed frame. A push plate is fixedly connected to the output end of the electric telescopic rod. PCB boards are movably placed inside the defective product box. Fixed blocks are fixedly installed on the upper ends of the inner walls on both the front and rear sides of the fixed frame. Fixed plates are fixedly installed in the middle of the inner walls on both the front and rear sides of the fixed frame. A connecting column is rotatably installed on the upper end of the fixed plate. Partitions are uniformly fixedly installed on the circumferential surface of the connecting column. A movable groove is opened inside the fixed block. A ratchet is fixedly installed on the upper end of the fixed block. The ratchet is movably installed in the movable groove. A pawl is provided on the inner right side of the fixed block. The ratchet and the pawl mesh.

[0007] Preferably, the defective product box has a convex groove in the middle of the inner wall on both sides near the fixing frame. A slider is movably installed in the convex groove. A rectangular plate is fixedly installed at the outward end of the slider. The right side of the rectangular plate abuts against the left side of the leftmost PCB board. A spring is provided in the middle of the convex groove. The end of the spring away from the slider is fixedly installed on the defective product box, and the other end of the spring is fixedly installed on the slider. When the PCB board falls into the defective product box, the right side of the rectangular plate abuts against the left side of the leftmost PCB board. At the same time, the spring compresses the slider, allowing the rectangular plate to support the PCB board. This prevents the PCB board's own weight from pushing the rectangular plate, causing the PCB board to tilt and slip, which would affect the storage of the PCB board.

[0008] Preferably, the left end of the conveyor belt is set as a downward sloping surface, and the upper end of the baffle is higher than the upper surface of the left end of the conveyor belt. This arrangement prevents the PCB board from sliding off the upper end of the baffle during the movement of the conveyor belt carrying the PCB board, thus affecting the PCB board collection efficiency.

[0009] Preferably, a protective pad is fixedly installed on the side of the pusher plate closest to the PCB board, and the length of the pusher plate is greater than the shortest distance between the two partitions. By fixing the protective pad on the side of the pusher plate closest to the PCB board, wear on the PCB board can be avoided during the movement of the pusher plate, thereby affecting the recycling and repair of the PCB board.

[0010] Preferably, the right side of the rightmost PCB board abuts against the left side of the partition, allowing the partition to support the PCB board and thus preventing the PCB board from tilting to the right, increasing the safety of the PCB board.

[0011] Preferably, the outer diameter of the spring is greater than the height of the opening end of the convex groove, which can prevent the spring from sliding out of the convex groove when the pressure of the slider on the spring gradually increases, thereby affecting the support of the rectangular plate on the PCB board.

[0012] In view of this, compared with the prior art, the beneficial effects of this utility model are:

[0013] (i) In this application, the staff transports the PCB boards with unqualified solder joints onto the conveyor belt. The PCB boards are then moved from the left end of the conveyor belt to the defective product box for collection. The electric telescopic rod is then activated, which pushes the partition to rotate via the push plate. The partition then gradually pushes the PCB boards into the defective product box for storage and sorting. During the rotation of the partition, the ratchet is driven by the connecting post to rotate in the fixed block. The ratchet is then limited by the pawl to prevent the ratchet from rotating in the opposite direction. This allows the partition to block the PCB boards and prevent them from tilting to the right.

[0014] (II) In this application, when the PCB board falls into the defective product box, the pusher plate pushes the partition to move the PCB board so that the right side of the rectangular board abuts against the left side of the leftmost PCB board, thereby supporting the PCB board. Then, the spring compresses the slider to fix the rectangular board, thus preventing the PCB board's own weight from pushing the rectangular board and causing it to tilt and slip, affecting the storage of PCB board 8. Attached Figure Description

[0015] Figure 1 The figure shown is a schematic diagram of the overall structure provided by this utility model;

[0016] Figure 2 The figure shown is a schematic cross-sectional view of the present invention.

[0017] Figure 3 The diagram shown is an internal view of the fixing block provided by this utility model;

[0018] Figure 4 The figure shown is a cross-sectional schematic diagram of the defective product box provided by this utility model.

[0019] Icons: 1. Support frame; 2. Conveyor belt; 3. Fixing frame; 4. Baffle; 5. Electric telescopic rod; 6. Push plate; 7. Defective product box; 8. PCB board; 9. Fixing block; 10. Fixing plate; 11. Connecting column; 12. Partition; 13. Movable groove; 14. Ratchet; 15. Pawl; 16. Convex groove; 17. Slider; 18. Rectangular plate; 19. Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 The present invention provides the following embodiments:

[0022] A PCB board solder joint inspection device includes a support frame 1 and a defective product box 7. A conveyor belt 2 is fixedly installed on the upper end of the support frame 1. A fixed frame 3 is provided at the bottom left end of the conveyor belt 2. A baffle 4 is fixedly installed on the upper left side of the fixed frame 3. An electric telescopic rod 5 is fixedly installed on the inner wall of the right side of the fixed frame 3. A push plate 6 is fixedly connected to the output end of the electric telescopic rod 5. A PCB board 8 is movably placed inside the defective product box 7. Fixed blocks 9 are fixedly installed on the upper ends of the inner walls on both the front and rear sides of the fixed frame 3. Fixed plates 10 are fixedly installed in the middle of the inner walls on both the front and rear sides of the fixed frame 3. A connecting column 11 is rotatably installed on the upper end of the fixed plate 10. Partitions 12 are evenly fixedly installed on the circumferential surface of the connecting column 11. A movable groove 13 is opened inside the fixed block 9. A ratchet 14 is fixedly installed on the upper end of the fixed block 9 and is movably installed in the movable groove 13. A pawl 15 is provided on the inner right side of the fixing block 9. The ratchet 14 meshes with the pawl 15. The worker transports the PCB board 8 with unqualified solder joints to the conveyor belt 2. Then the PCB board 8 moves from the left end of the conveyor belt 2 to the defective box 7 for collection. During the movement of the PCB board 8, it is blocked by the baffle 4, so that the PCB board 8 slides vertically along the baffle 4 between the partitions 12. Then the electric telescopic rod 5 is activated, so that the electric telescopic rod 5 pushes the partition 12 to rotate through the push plate 6. Then the partition 12 gradually pushes the PCB board 8. At the same time, during the rotation of the partition 12, it will drive the ratchet 14 to rotate in the fixing block 9 through the connecting column 11. Then the ratchet 14 will move the pawl 15 during the rotation, so that the pawl 15 limits the ratchet 14 and prevents the ratchet 14 from rotating in the opposite direction.

[0023] Specifically, a convex groove 16 is provided in the middle of the inner wall of the defective product box 7 near the front and rear sides of the fixing frame 3. A slider 17 is movably installed in the convex groove 16. A rectangular plate 18 is fixedly installed at the outward end of the slider 17. The right side of the rectangular plate 18 abuts against the left side of the leftmost PCB board 8. A spring 19 is provided in the middle of the convex groove 16. The end of the spring 19 away from the slider 17 is fixedly installed on the defective product box 7, and the other end of the spring 19 is fixedly installed on the slider 17. When the PCB board 8 falls into the defective product box 7, the push plate 6 pushes the partition 12 to push the PCB board 8 so that the right side of the rectangular plate 18 abuts against the left side of the leftmost PCB board 8. At the same time, the spring 19 squeezes the slider 17, thereby fixing the rectangular plate 18 and preventing the PCB board 8 from being pushed by its own weight, which would cause the PCB board 8 to tilt and slip, affecting the storage of the PCB board 8.

[0024] Specifically, the left end of the conveyor belt 2 is set as a downward sloping surface, and the upper end of the baffle 4 is higher than the upper surface of the left end of the conveyor belt 2. By setting the left end of the conveyor belt 2 as a downward sloping surface and then making the upper end of the baffle 4 higher than the upper surface of the left end of the conveyor belt 2, it is possible to prevent the PCB board 8 from sliding off the upper end of the baffle 4 during the process of the conveyor belt 2 carrying the PCB board 8, thereby affecting the collection of the PCB board 8.

[0025] Specifically, a protective pad is fixedly installed on the side of the push plate 6 near the PCB board 8. The length of the push plate 6 is greater than the shortest distance between the two partitions 12. By fixing the protective pad on the side of the push plate 6 near the PCB board 8, the wear and tear on the PCB board 8 during the movement of the push plate 6 can be avoided, which would affect the recycling and repair of the PCB board 8. At the same time, it ensures that the push plate 6 can push the partition 12 to rotate during the movement, and then let the partition 12 push the PCB board 8 to the left to collect the PCB board 8.

[0026] Specifically, the right side of the rightmost PCB board 8 abuts against the left side of the partition 12, allowing the partition 12 to support the PCB board 8 and thus prevent the PCB board 8 from tilting to the right.

[0027] Specifically, the outer diameter of the spring 19 is greater than the height of the opening end of the convex groove 16. This allows the push plate 6 to gradually push the PCB board 8 to the left. Then, the PCB board 8 moves along with the slider 17 via the rectangular plate 18. This prevents the slider 17 from slipping out of the convex groove 16 when it presses against the spring 19, thus affecting the support of the rectangular plate 18 on the PCB board 8.

[0028] The working principle of this utility model is as follows: Workers transport PCB boards 8 with defective solder joints onto conveyor belt 2. PCB boards 8 then move from the left end of conveyor belt 2 to the defective product box 7 for collection. A baffle 4 blocks the PCB boards, allowing them to slide vertically along the baffle 4 between partitions 12. Then, the electric telescopic rod 5 is activated, causing the pusher plate 6 to rotate the partition 12. The partition 12 then gradually pushes the PCB boards 8. Simultaneously, during rotation, the partition 12, via the connecting post 11, causes the ratchet 14 to rotate within the fixed block 9. The ratchet 14, during its rotation, engages the pawl 15, limiting its position. When the PCB board 8 falls into the defective product box 7, the pusher plate 6 pushes the partition 12, pushing the PCB board 8 so that the right side of the rectangular plate 18 abuts against the left side of the leftmost PCB board 8. Simultaneously, a spring 19 presses against the slider 17, thus fixing the rectangular plate 18 in place.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A PCB solder joint detection device, comprising a support frame (1) and a defective product box (7), characterized in that To: The upper end of the support frame (1) is fixedly installed with a conveyor belt (2), and the left end of the conveyor belt (2) is provided with a fixed frame (3), and the left side of the fixed frame (3) is fixedly installed with a baffle (4), The right side of the fixed frame (3) is fixedly installed with an electric telescopic rod (5), and the output end of the electric telescopic rod (5) is fixedly connected with a push plate (6), The inside of the defective product box (7) is movably placed with a PCB board (8), The front and rear inner walls of the fixed frame (3) are fixedly installed with a fixed block (9) at the upper end, and the front and rear inner walls of the fixed frame (3) are fixedly installed with a fixed plate (10) at the middle, The upper end of the fixed plate (10) is rotatably installed with a connecting column (11), and the circumferential surface of the connecting column (11) is uniformly fixedly installed with a partition plate (12), The inside of the fixed block (9) is provided with a movable groove (13), the upper end of the fixed block (9) is fixedly installed with a ratchet wheel (14), The ratchet wheel (14) is movably installed in the movable groove (13), and the right inner wall of the fixed block (9) is provided with a pawl (15), The ratchet wheel (14) is engaged with the pawl (15). The defective product box (7) is provided with a convex groove (16) near the middle of the inner walls of the front and rear sides of the fixed frame (3), The convex groove (16) is movably installed with a sliding block (17), and the outward end of the sliding block (17) is fixedly installed with a rectangular plate (18), 2. The PCB joint detection apparatus of claim 1, wherein: The right side of the rectangular plate (18) abuts against the left side of the leftmost PCB board (8), The middle of the convex groove (16) is provided with a spring (19), and the end of the spring (19) away from the sliding block (17) is fixedly installed on the defective product box (7), The other end of the spring (19) is fixedly installed on the sliding block (17). The left end of the conveyor belt (2) is provided as a downward inclined slope, and the upper end of the baffle (4) is higher than the upper surface of the left end of the conveyor belt (2). The side of the push plate (6) close to the PCB board (8) is fixedly installed with a protective pad, and the length of the push plate (6) is greater than the shortest distance between two partition plates (12). The right side of the rightmost PCB board (8) abuts against the left side of the partition plate (12). The outer diameter of the spring (19) is greater than the height of the opening end of the convex groove (16).

3. The PCB joint detection apparatus of claim 1, wherein: ​ ​ ​ 4. The PCB joint detection apparatus of claim 1, wherein: ​ ​ ​ 5. The PCB joint detection apparatus of claim 1, wherein: ​ ​ 6. The PCB joint detection apparatus of claim 2, wherein: ​ ​

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