An automatic detection device for circuit board processing

Abstract

The application relates to the field of circuit board detection, in particular to an automatic detection device for circuit board processing, which comprises a base, a flying probe detection mechanism and a visual sensor are fixedly installed on the base, two symmetrical telescopic supporting plates are fixedly installed on the base, an annular guide rail is arranged between the two telescopic supporting plates, two rotating rods are fixedly installed on the side wall of the annular guide rail, and the two rotating rods are coaxially arranged. The linear guide rail and the annular guide rail are arranged, so that the limiting column and the pushing block can be flexibly adjusted according to circuit boards of different specifications. Meanwhile, the driving motor drives the rotating rod to rotate, so that the circuit board is rotated, the angle direction of the circuit board is changed, the flying probe can detect the complex circuit board, the back of the circuit board can also be detected, the limiting column and the pushing block are used in cooperation, the application range of the detection device is ensured, and the detection efficiency of the circuit board is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of circuit board inspection, specifically to an automatic inspection device for circuit board processing. Background Technology

[0002] After circuit board processing, testing is divided into visual inspection and electrical performance testing. Visual inspection checks the PCB substrate for deformation, delamination, burn marks, and cracks on the edges. It also observes whether the solder joints are full, and whether there are any cold solder joints, solder bridges, detached solder pads, or blackened and oxidized solder joints. Electrical performance testing requires power-on and power-off testing to rule out short circuits. After powering on, it checks whether the key voltages meet the design standards, uses an oscilloscope to detect waveforms, and determines whether the signal is stable. It also connects to supporting equipment to verify whether the core functions of the circuit board are working properly. Flying probe testing equipment is a high-precision tool for testing the electrical performance of circuit boards. Its core advantages are that it does not require customized fixtures, is flexible in adaptation, and can achieve micron-level testing accuracy. The clamping mechanism used in testing equipment on the market can meet the needs of most circuit board specifications. However, it should be noted that some circuit boards have extremely dense electronic components, and the flying probes on the flying probe testing equipment cannot reach the pins of the electronic components from the front. At the same time, some electronic components on some circuit boards can only be tested from the bottom. This causes the equipment to need to fix the board multiple times when testing the same circuit board, which seriously affects the testing efficiency of the circuit board.

[0003] Therefore, an automatic inspection device for circuit board processing is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic inspection device for circuit board processing, in order to solve the problem that the flying probe of the flying probe inspection device cannot press against the pins of electronic components from the front, and that some electronic components of circuit boards can only be inspected from the bottom, which causes the device to need to fix the circuit board multiple times when inspecting the same circuit board, thus reducing the efficiency of circuit board inspection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic inspection device for circuit board processing includes a base on which a flying probe inspection mechanism and a vision sensor are fixedly mounted. Two symmetrically arranged telescopic support plates are fixedly mounted on the base. An annular guide rail is provided between the two telescopic support plates. Two rotating rods are fixedly mounted on the sidewalls of the annular guide rail, and the two rotating rods are coaxially arranged. A drive motor is fixedly mounted on one of the telescopic support plates. A drive module is mounted on the base, and the vision sensor is connected to the drive motor through the drive module. The output shaft of the drive motor is fixedly mounted to the rotating rods. Four arc-shaped sliders are slidably connected to the annular guide rail. Linear guide rails are fixedly mounted on the arc-shaped sliders, all facing the center of the annular guide rail. Linear sliders are slidably connected to the linear guide rails. Support seats are fixedly mounted on the linear sliders. Limiting posts and pushing blocks are slidably connected to the support seats. A pushing assembly for moving the limiting posts and pushing blocks is mounted on the linear sliders.

[0006] In the field of circuit board processing, traditional inspection methods often use locating slots. However, these slots are fixed structures, and after prolonged use, gaps inevitably form between the circuit board and the slot when it is placed in the slot, leading to false detections by the flying probe inspection mechanism. The rapid development of the electronics industry has placed higher demands on the accuracy and efficiency of circuit board inspection. The aforementioned automatic inspection device for circuit board processing has emerged to address this need. Through the cooperation of a flying probe inspection mechanism and a vision sensor, it can achieve omnidirectional, high-precision inspection of circuit boards. The design of the telescopic support plate and the circular guide rail allows the inspection device to be flexibly adjusted according to different circuit board specifications, improving its versatility. Simultaneously, the vision sensor, through a sensor system and drive module, works with a drive motor to rotate a rotating rod, causing the circuit board to rotate. By changing the angle and direction of the circuit board, the flying probe can inspect complex circuit boards, including the back side. The coordinated use of locating posts and push blocks significantly improves the applicability and inspection efficiency of the device.

[0007] The pushing component includes a through groove formed on the support base. The sliding direction of the through groove is the same as the sliding direction of the linear guide rail. The limiting post is slidably connected in the through groove. An electric telescopic rod is fixedly installed in the through groove. A first compression spring is provided in the through groove. The two ends of the first compression spring are fixedly installed to the side wall of the limiting post and the movable end of the electric telescopic rod, respectively. A connector is connected between the limiting post and the pushing block. When the limiting post moves, it pushes the pushing block against the circuit board through the connector.

[0008] During circuit board processing, different specifications of circuit boards vary in size and shape, resulting in different requirements for fixation and positioning during inspection. The extension and retraction of an electric telescopic rod pushes a first compression spring, controlling the position of the limiting post within the through-groove. The movement of multiple limiting posts precisely positions and limits the circuit board placed on it. The first compression spring not only acts as a buffer during the extension and retraction of the electric telescopic rod, reducing impact on the circuit board and the device itself, but also keeps the limiting post in a suitable position when the electric telescopic rod stops working. Specifically, the movable end of the electric telescopic rod moves to one side, pushing the limiting post through the compression spring, causing the limiting post to abut against the inner wall of one side of the circuit board hole, and then... A continuous tension spring pulls the circuit board into position through the simultaneous pulling of multiple limiting posts. The movable limiting posts ensure that when their diameter is smaller than the diameter of the holes in the circuit board, they can pull the board to the designated position. Smaller limiting posts also facilitate placement during circuit board installation, ensuring stability during testing and providing a reliable guarantee for accurate detection by the flying probe testing mechanism and vision sensor. Simultaneously, the movement of the limiting posts utilizes connectors to move the push block, effectively holding and fixing the circuit board in place. This avoids the need for the flying probe testing mechanism to control the drive motor via a vision sensor, preventing changes in the circuit board's detection position when it is flipped or tilted, thus ensuring stability during subsequent flying probe testing.

[0009] The connector includes a hydraulic rod, which is fixedly mounted on a support base at a 45° angle to the ground. A push frame is fixedly mounted on the movable end of the hydraulic rod. Multiple support columns are fixedly mounted on the push block, and the multiple support columns are slidably connected to the push frame. A second compression spring is sleeved on each support column, and the two ends of the second compression spring abut against the push frame and the push block, respectively. An installation groove is provided on the support base, and a hydraulic cylinder is fixedly mounted in the installation groove. The hydraulic cylinder is connected to the hydraulic rod through a pipe, and the movable end of the hydraulic cylinder is fixedly mounted to the movable end of the electric telescopic rod.

[0010] The connector utilizes a combination of a support column and a second compression spring, which allows the push block to produce a certain buffering effect when it contacts the circuit board, thus avoiding damage to the circuit board due to rigid contact. Meanwhile, the 45° angle design between the hydraulic rod and the bottom wall of the support base not only provides a stable moving path for the push block, but also allows the push block to be tilted during movement to press and fix the circuit board below. As the push block moves to one side, it not only presses downwards but also pushes the circuit board to the other side to limit its movement, ensuring that the circuit board is in the corresponding position. At the same time, because the push block is tilted downwards and moves, when it encounters a thick circuit board, the upper part of the push block abuts against the circuit board, and the telescopic rod cannot move to the designated position. After it cannot move, it will retract, compressing the second compression spring inside, thereby increasing the compressive force to fix the circuit board and ensuring that the circuit board will not move during testing. At the same time, when it encounters a thin circuit board, the lower part of the push block abuts against the circuit board, and the telescopic rod can move to the designated position. After it cannot move, it will retract, but because the stroke is fixed, the second compression spring is compressed by a small amount, applying a small compressive force to the thin circuit board and avoiding damage to the circuit board due to excessive clamping force. The rotating plate further enhances the flexibility of the device. By sliding the first and second sliding columns in the sliding groove, the linkage between the telescopic rod and the electric telescopic rod is realized, making the entire pushing process smoother and more efficient. This ensures the detection efficiency of the testing equipment while avoiding damage to the circuit board.

[0011] The push block is generally arc-shaped and has a hole in the middle. The push block has multiple evenly arranged right-angle slots, which are combined to form a tooth shape. The tips of the teeth of the multiple right-angle slots have rounded chamfers, and rubber pads are attached to the right-angle slots.

[0012] The curved push block and the holes it has allow the right-angled edge of the circuit board to pass through the holes when the push block is pressed and fixed, enabling the push block to press and fix the side of the circuit board. The right-angle slot allows the push block to better fit the edge of the circuit board when in contact with it. The right-angle slot and its rounded chamfered structure can precisely hold the edge of the circuit board, ensuring the stability of the circuit board during testing and preventing displacement or wobbling. The rubber pad attached to the right-angle slot not only increases the friction between the push block and the circuit board, further securing the circuit board, but also acts as a buffer, preventing direct rigid contact between the push block and the circuit board, thus preventing scratches or damage to the circuit board surface. The combined use of the right-angle slot and the rubber pad further ensures that the circuit board is fixed in the corresponding position while protecting the edges of the circuit board from damage.

[0013] Each of the multiple support bases is rotatably connected to two support bars, which are located on both sides of the limiting post, and the angle between the two support bars is set at 90°.

[0014] Two support bars are fixedly installed on each support base. These two support bars provide auxiliary fixation to the support base from two vertical directions. During the automatic inspection of circuit board processing, the circuit components on the circuit board are very close to the edge of the circuit board. To ensure that the circuit board is fully utilized, the numerous electronic components can seriously interfere with the support of the support base. Supporting only the four corners will lead to increased pressure at the corners, which can easily cause damage to the circuit board. The two support bars can effectively support the edge of the circuit board, further improving the reliability of the automatic inspection device. At the same time, the rotating support bars can rotate and adjust in accordance with the relative position change of the support base to meet the inspection support of most circuit boards, thus improving the applicability of the automatic circuit board inspection device.

[0015] Below the annular guide rail are two intersecting connecting plates that are rotatably connected to each other. The two ends of the connecting plates are fixedly installed with corresponding arc-shaped sliders on both sides. A rotating column is rotatably connected to the connecting plate, and both ends of the rotating column are provided with external threads. The linear slider is threadedly connected to the rotating column.

[0016] Two connecting plates connect to two corresponding arc-shaped sliders, making the movement of the two arc-shaped sliders on the circular guide rail more stable and ensuring that the central axis is always on the same axis. This effectively reduces wobbling caused by uneven force on one side, making it easier for operators to adjust the position of multiple arc-shaped sliders. It should be noted that the arc-shaped sliders are equipped with screws, which are used to fix and adjust the arc-shaped sliders by rotating the screws. At the same time, the design of the rotating column cleverly utilizes the characteristics of the threaded connection. By rotating the rotating column, the position of the linear slider can be easily adjusted, thereby achieving fine adjustment of the height of the circular guide rail to meet the needs of different circuit board processing and testing. Of course, since there are threads on both sides of the rotating column, adjusting the distance at one end will move the other end to the corresponding position, greatly improving the convenience of the above structure and providing a reliable guarantee for the automatic testing of circuit boards.

[0017] The limiting post has a recessed groove with a depth of a and a radius of b, where a = 0.2b. The top and sides of the recessed groove are chamfered.

[0018] During the operation of the automatic inspection device for circuit board processing, the drive motor rotates the entire annular guide rail, causing the limiting post to face downwards. This downward orientation allows the limiting post to enter the hole in the circuit board. To prevent the circuit board from falling during the inversion process, a recessed groove is provided on the limiting post. This groove ensures that the circuit board and the limiting post are locked together. The depth of the groove is one-fifth of the radius of the limiting post, ensuring sufficient locking while maintaining the overall strength of the limiting post and preventing the circuit board from being difficult to remove. This design improves the stability and accuracy of the device's operation, providing a reliable guarantee for the automatic inspection of circuit board processing.

[0019] The top of the limiting post is shaped like a frustum, and the limiting post is made of ceramic material with a polished surface.

[0020] The limiting posts are made of ceramic material and have a polished surface. This combination provides high strength and wear resistance, while the extremely smooth surface effectively reduces friction with the circuit board's holes, minimizing circuit board wear. It also prevents wear on the limiting posts themselves, which could affect the accuracy of flying probe testing. Furthermore, the ceramic material has excellent insulation properties. When used in automated circuit board processing inspection devices, it prevents damage to the circuit board due to leakage current, ensuring the stability and safety of the inspection process.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting linear and circular guide rails, the limiting posts and push blocks can be flexibly adjusted according to circuit boards of different specifications. Simultaneously, the drive motor rotates the rotating rod, causing the circuit board to rotate. By changing the angle and direction of the circuit board, the flying probe can inspect complex circuit boards, and can also inspect the back of the circuit board. The coordinated use of the limiting posts and push blocks significantly improves the inspection efficiency of circuit boards while ensuring the applicability of the detection device.

[0022] 2. By allowing the limit post to move, the limit post can pull the circuit board to a designated position when its diameter is smaller than the diameter of the hole in the circuit board. The smaller diameter limit post also makes it easier to place the circuit board during installation. At the same time, the movement of the limit post is driven by the connecting parts to move the push block, ensuring the stability of the circuit board during the inspection process. This provides a reliable guarantee for the subsequent flying probe inspection mechanism and vision sensor to accurately inspect the circuit board, ensuring the stability of the subsequent flying probe inspection.

[0023] 3. The push block is tilted downwards and moved so that when it encounters a thick circuit board, the upper part of the push block abuts against the circuit board, while the telescopic rod cannot move to the designated position and compresses the internal second compression spring, thereby increasing the compressive force on the circuit board. At the same time, when it encounters a thin circuit board, the lower part of the push block abuts against the circuit board, and the telescopic rod can move to the designated position. However, because the stroke is fixed, the second compression spring is compressed by a small amount, applying a small compressive force to the thin circuit board, avoiding damage to the circuit board due to excessive clamping force, thereby ensuring the stable operation of the detection device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the annular guide rail in this invention; Figure 3 This is a schematic diagram of the support base in this invention; Figure 4 This is a schematic diagram of the structure of the push block in this invention; Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at point AA; Figure 6 This is a schematic diagram of the operation of the arc-shaped slider in this invention; Figure 7 This is a schematic diagram of the moving structure of the push block in this invention.

[0025] In the diagram: 1. Base; 2. Flying probe detection mechanism; 3. Telescopic support plate; 4. Drive motor; 5. Circular guide rail; 6. Arc-shaped slider; 7. Connecting plate; 8. Rotating column; 9. Linear slider; 10. Linear guide rail; 11. Support seat; 12. Hydraulic rod; 13. Push block; 14. Support bar; 15. Limiting post; 16. Recessed groove; 17. Through groove; 18. Push frame; 19. Hole; 20. Support column; 21. Second compression spring; 22. Right-angle slot; 23. Hydraulic cylinder; 24. Mounting slot; 25. Electric telescopic rod; 26. First compression spring; 27. Rotating rod; 28. Vision sensor. Detailed Implementation

[0026] Please see Figures 1 to 7 This invention provides an automatic inspection device for circuit board processing, the technical solution of which is as follows: An automatic inspection device for circuit board processing includes a base 1, on which a flying probe inspection mechanism 2 and a vision sensor 28 are fixedly mounted. Two symmetrically arranged telescopic support plates 3 are fixedly mounted on the base 1, and an annular guide rail 5 is provided between the two telescopic support plates 3. Two rotating rods 27 are fixedly mounted on the side wall of the annular guide rail 5, and the two rotating rods 27 are coaxially arranged. A drive motor 4 is fixedly mounted on one side of the telescopic support plate 3. A drive module is installed on the base 1, and the vision sensor 28 is connected to the drive motor 4 through the drive module. The output shaft of the drive motor 4 is fixedly mounted to the rotating rod 27. Four arc-shaped sliders 6 are slidably connected on the annular guide rail 5. Linear guide rails 10 are fixedly mounted on the arc-shaped sliders 6, and all linear guide rails 10 are arranged facing the center of the annular guide rail 5. Linear sliders 9 are slidably connected on the linear guide rails 10. A support base 11 is fixedly mounted on the linear slider 9. A limit post 15 and a push block 13 are slidably connected on the support base 11. A push assembly for moving the limit post 15 and the push block 13 is installed on the linear slider 9.

[0027] The pushing component includes a through groove 17 formed on the support base 11. The sliding direction of the through groove 17 is the same as the sliding direction of the linear guide rail 10. The limiting post 15 is slidably connected in the through groove 17. An electric telescopic rod 25 is fixedly installed in the through groove 17. A first compression spring 26 is provided in the through groove 17. The two ends of the first compression spring 26 are fixedly installed to the side wall of the limiting post 15 and the movable end of the electric telescopic rod 25, respectively. A connector is connected between the limiting post 15 and the pushing block 13. When the limiting post 15 moves, it pushes the pushing block 13 against the circuit board through the connector. The connector includes a hydraulic rod 12, which is fixedly mounted on the support base 11 at a 45° angle to the ground. A push frame 18 is fixedly mounted on the movable end of the hydraulic rod 12. Multiple support columns 20 are fixedly mounted on the push block 13, and the multiple support columns 20 are slidably connected to the push frame 18. A second compression spring 21 is sleeved on the support column 20, and the two ends of the second compression spring 21 abut against the push frame 18 and the push block 13, respectively. An installation groove 24 is provided on the support base 11, and a hydraulic cylinder 23 is fixedly mounted in the installation groove 24. The hydraulic cylinder 23 is connected to the hydraulic rod 12 through a pipe, and the movable end of the hydraulic cylinder 23 is fixedly mounted to the movable end of the electric telescopic rod 25.

[0028] The push block 13 is generally arc-shaped with a hole 19 in the middle. Multiple evenly spaced right-angle slots 22 are formed on the push block 13, and these slots are combined to form a tooth shape. The tips of the teeth of the right-angle slots 22 have rounded chamfers, and rubber pads are attached to the right-angle slots 22. Two support bars 14 are rotatably connected to each of the multiple support seats 11. The two support bars 14 are located on both sides of the limiting post 15, and the angle between the two support bars 14 is 90°.

[0029] Below the annular guide rail 5 are two intersecting connecting plates 7, which are rotatably connected to each other. The two ends of each connecting plate 7 are fixedly mounted to corresponding arc-shaped sliders 6 on both sides. A rotating column 8 is rotatably connected to each connecting plate 7, and both ends of the rotating column 8 are threaded. The linear slider 9 is threadedly connected to the rotating column 8. A recessed groove 16 is formed on the limiting post 15, with a depth of 'a' and a radius of 'b', where 'a' = 0.5b'. The top and sides of the recessed groove 16 are chamfered. The top of the limiting post 15 is frustum-shaped, and the limiting post 15 is made of ceramic material with a polished surface.

[0030] In practical use, the arc-shaped slider 6 is equipped with screws. By rotating the screws, the arc-shaped slider 6 can be loosened, allowing its position to be adjusted according to the circuit board specifications. Below the annular guide rail 5 are two intersecting connecting plates 7, each connecting to a corresponding arc-shaped slider 6. This ensures greater stability for the two arc-shaped sliders 6 as they move along the annular guide rail 5. When one arc-shaped slider 6 is adjusted to its correct position, its corresponding slider on the other side will also move to the designated position due to the connecting plate 7. The two connecting plates 7 are rotatably connected, with the connection point at the center of the two plates, effectively reducing wobbling caused by uneven force on one side. After adjusting the arc-shaped slider 6, the position of the linear slider 9 needs to be adjusted. This is done by rotating the rotating column 8, which has threads on both sides. The linear slider 9 connects to these threads, allowing adjustment of one end to move the other end to the corresponding position. Adjusting the two non-corresponding rotating columns 8 moves the linear slider 9 to the designated position.

[0031] After adjustment, the conveyor on one side will transport the circuit board to the bottom of the testing device. The telescopic support plate 3 drives the annular guide rail 5 to move downwards, and the drive motor 4 drives the annular guide rail 5 to flip downwards. The telescopic support plate 3 continues to move downwards, and drives the limiting post 15 into the mounting hole of the circuit board below. At this time, the movable end of the electric telescopic rod 25 moves to one side. The movable end of the electric telescopic rod 25 pushes the limiting post 15 to move through the compression spring, so that the limiting post 15 abuts against the inner wall of one side of the circuit board hole 19, and the compression spring continuously applies tension. Through the simultaneous pulling of multiple limiting posts 15, the circuit board is placed in the corresponding position. The movable nature of the limiting post 15 ensures that the diameter of the limiting post 15 is smaller than the hole 19 of the circuit board. When the diameter is large enough, the limiting post 15 can pull the circuit board to a designated position. Moreover, the smaller limiting post 15 makes it easier to place the circuit board during installation, ensuring the stability of the circuit board during testing. The downward setting of the limiting post 15 allows it to enter the hole 19 of the circuit board. After entering the hole 19, in order to prevent the circuit board from falling downwards during inversion, a recessed groove 16 needs to be opened on the limiting post 15. The recessed groove 16 ensures that the hole 19 of the circuit board and the limiting post 15 can be locked together. The depth of the recessed groove 16 is one-fifth of the radius of the limiting post 15 to ensure that there is a certain locking groove while avoiding a reduction in the overall strength of the limiting post 15, and also to avoid the problem of the circuit board being difficult to remove.

[0032] At this time, the continuously moving electric telescopic rod 25 pushes the hydraulic cylinder 23 to compress, so that the hydraulic oil inside it enters the hydraulic rod 12, and the movable end of the hydraulic rod 12 pushes the push block 13 to move. The connecting part utilizes the combination of the support column 20 and the second compression spring 21, so that the push block 13 can produce a certain buffering effect when it contacts the circuit board, avoiding damage to the circuit board due to rigid contact. Meanwhile, the 45° angle between the hydraulic rod 12 and the bottom wall of the support base 11 not only provides a stable moving path for the push block 13, but also allows the push block 13 to be tilted during movement to press and fix the circuit board below. As the push block 13 moves to one side, it not only presses downwards but also pushes the circuit board to the other side to limit its movement, ensuring that the circuit board is in the corresponding position. At the same time, because the push block 13 is tilted downwards and moves, when it encounters a thick circuit board, the upper part of the push block 13 abuts against the circuit board, and the telescopic rod cannot move to the designated position. After it cannot move, it will retract, pressing the second compression spring 21 inside, thereby increasing the pressing force on the circuit board and ensuring that the circuit board will not move during testing. At the same time, when it encounters a thin circuit board, the lower part of the push block 13 abuts against the circuit board, and the telescopic rod can move to the designated position. After it cannot move, it will retract, but because the stroke is fixed, the second compression spring 21 is compressed by a small amount, applying a small pressing force to the thin circuit board and avoiding damage to the circuit board due to excessive clamping force.

[0033] Of course, when the push block 13 contacts the circuit board, because some corners of the circuit board are right angles, it is difficult for the push block 13 to abut against the right angle. The arc-shaped push block 13 and the hole 19 opened on it allow the right angle of the circuit board to pass through the hole 19 when the push block 13 presses and fixes it, so that the push block 13 can press and fix the side of the circuit board. The right angle slot 22 allows the push block 13 to better fit the edge of the circuit board when it contacts the circuit board. The right angle slot 22 and its rounded chamfer structure can accurately hold the edge of the circuit board, ensuring that the circuit board is stable in position during the test and is not easy to shift or shake. The rubber pad pasted on the right angle slot 22 not only increases the friction between the push block 13 and the circuit board, further stabilizing the circuit board, but also plays a buffering and protective role, avoiding direct rigid contact between the push block 13 and the circuit board, and preventing the surface of the circuit board from being scratched or damaged. The cooperation between the right angle slot 22 and the rubber pad can further ensure that the circuit board is fixed in the corresponding position while protecting the edge of the circuit board from damage.

[0034] After the circuit board is fixed, the flying probe detection mechanism 2, together with the vision sensor 28, will detect the circuit board. At the same time, the vision sensor 28 will work with the drive motor 4 on one side. When the flying probe cannot pass through the electronic component for detection, the drive motor 4 will rotate to a set angle, allowing the flying probe detection mechanism 2 to continue detection. After the detection is completed, the telescopic support plate 3 will drive the ring guide rail 5 to move downward, and the drive motor 4 will drive the ring guide rail 5 to flip downward. The electric telescopic rod 25 will return to its original position, and the circuit board will be put back into its original position, so that the next circuit board can continue to be detected.

[0035] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. An automatic inspection device for circuit board processing, comprising a base (1), wherein a flying probe inspection mechanism (2) and a vision sensor (28) are fixedly mounted on the base (1), characterized in that, Two symmetrically arranged telescopic support plates (3) are fixedly installed on the base (1). An annular guide rail (5) is provided between the two telescopic support plates (3). Two rotating rods (27) are fixedly installed on the side wall of the annular guide rail (5). The two rotating rods (27) are coaxially arranged. A drive motor (4) is fixedly installed on one side of the telescopic support plate (3). A drive module is installed on the base (1), and the vision sensor (28) is connected to the drive motor (4) through the drive module. The output shaft of the drive motor (4) is fixedly installed with the rotating rod (27). Four arc-shaped sliders (6) are slidably connected to the annular guide rail (5). A linear guide rail (10) is fixedly installed on the arc-shaped slider (6). The linear guide rails (10) are all set facing the center of the annular guide rail (5). A linear slider (9) is slidably connected to the linear guide rail (10). A support base (11) is fixedly installed on the linear slider (9). A limit post (15) and a push block (13) are slidably connected to the support base (11). A push assembly for moving the limit post (15) and the push block (13) is installed on the linear slider (9).

2. The automatic inspection device for circuit board processing according to claim 1, characterized in that, The pushing component includes a through groove (17) opened on the support base (11). The sliding direction of the through groove (17) is the same as the sliding direction of the linear guide rail (10). The limiting post (15) is slidably connected in the through groove (17). An electric telescopic rod (25) is fixedly installed in the through groove (17). A first compression spring (26) is provided in the through groove (17). The two ends of the first compression spring (26) are fixedly installed to the side wall of the limiting post (15) and the movable end of the electric telescopic rod (25), respectively. A connector is connected between the limiting post (15) and the pushing block (13). When the limiting post (15) moves, it pushes the pushing block (13) against the circuit board through the connector.

3. The automatic inspection device for circuit board processing according to claim 2, characterized in that, The connector includes a hydraulic rod (12), which is fixedly installed on the support base (11) and is set at a 45° angle to the ground. A push frame (18) is fixedly installed on the movable end of the hydraulic rod (12). Multiple support columns (20) are fixedly installed on the push block (13). The multiple support columns (20) are slidably connected to the push frame (18). A second compression spring (21) is sleeved on the support column (20). The two ends of the second compression spring (21) abut against the push frame (18) and the push block (13) respectively. An installation groove (24) is opened on the support base (11). A hydraulic cylinder (23) is fixedly installed in the installation groove (24). The hydraulic cylinder (23) is connected to the hydraulic rod (12) through a pipe. The movable end of the hydraulic cylinder (23) is fixedly installed with the movable end of the electric telescopic rod (25).

4. An automatic inspection device for circuit board processing according to claim 3, characterized in that, The push block (13) is generally arc-shaped and has a hole (19) in the middle. The push block (13) has a plurality of evenly arranged right-angle slots (22). The plurality of right-angle slots (22) are combined to form a tooth shape. The tips of the teeth of the plurality of right-angle slots (22) have rounded chamfers. Rubber pads are attached to the right-angle slots (22).

5. An automatic inspection device for circuit board processing according to claim 2, characterized in that, Each of the multiple support seats (11) is rotatably connected to two support bars (14), the two support bars (14) are located on both sides of the limiting post (15), and the angle between the two support bars (14) is set at 90°.

6. An automatic inspection device for circuit board processing according to claim 2, characterized in that, Below the annular guide rail (5) are two intersecting connecting plates (7), which are rotatably connected to each other. The two ends of the connecting plates (7) are fixedly installed with the corresponding arc-shaped sliders (6) on both sides. A rotating column (8) is rotatably connected to the connecting plate (7). Both ends of the rotating column (8) are provided with external threads. The linear slider (9) is threadedly connected to the rotating column (8).

7. An automatic inspection device for circuit board processing according to claim 2, characterized in that, The limiting post (15) has a recessed groove (16) with a depth of a and a radius of b, where a = 0.5b. The top and sides of the recessed groove (16) are chamfered.

8. An automatic inspection device for circuit board processing according to claim 1, characterized in that, The top of the limiting post (15) is set in the shape of a frustum. The limiting post (15) is made of ceramic material and its surface is polished.

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