Circuit board appearance rapid detection device

Abstract

The utility model provides a circuit board appearance rapid detection device, which relates to the technical field of circuit board processing, and comprises a rack, one side of the rack is fixedly connected with a control panel, the inner wall of the rack is fixedly connected with a fixed plate, and a detection mechanism is arranged above the fixed plate. According to the utility model, the second detection unit and the third detection unit are symmetrically arranged, when the circuit board moves to the position below the second detection frame along with the second detection frame, the circuit board is located in the image acquisition interval, and the image information of the front and back surfaces of the circuit board can be respectively acquired by utilizing the second detection unit and the third detection unit, so that the simultaneous detection of the front and back surfaces of the circuit board is realized; the circuit board is prevented from overturning during reverse side detection, and the detection time is shortened; the hydraulic cylinder can drive the connecting frame to ascend and descend, so that the height of the two first detection units is adjusted, the first detection units can collect image information of the side face of the circuit board, image information in multiple directions is fused, and the detection accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a circuit board appearance rapid detection device. Background Art

[0002] Circuit boards make circuits miniaturized and intuitive, and play an important role in the mass production of fixed circuits and the optimization of power layout. After the circuit boards are processed and received, their appearance needs to be inspected to reduce the appearance defects of the circuit boards.

[0003] In the prior art, circuit boards are inspected by conveyor belts, and an image acquisition unit is used to collect appearance data of the circuit boards. However, the image acquisition unit is arranged above the circuit boards, and can only take aerial photos of the circuit boards, but cannot collect image information of the front and back sides of the circuit boards at the same time. When inspecting the back side of the circuit boards, the circuit boards need to be turned over for inspection again, and the inspection time is relatively long. Utility Model Content

[0004] The utility model mainly provides a circuit board appearance rapid detection device which can detect the front and back sides of the circuit board and has a short detection time.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a circuit board appearance rapid detection device, comprising: a frame, a control panel is fixedly connected to one side of the frame, a fixed plate is fixedly connected to the inner wall of the frame, a detection mechanism is arranged above the fixed plate, the detection mechanism comprises a detection frame one, a detection frame two and a detection unit three, the bottom of the detection frame one is fixedly connected to a base, the bottom of the base is rotatably connected to a detection platform, the bottom of the detection platform is fixedly connected to a bevel gear two, the bevel gear two is rotatably connected to the fixed plate, and one side of the bevel gear two is meshed with a bevel gear one, the top of the fixed plate is fixedly connected to the detection unit three, the detection unit two is arranged above the detection unit three, the top of the detection unit two is fixedly connected to the detection frame two, the detection unit three and the detection unit two are symmetrically arranged up and down, the detection unit three and the detection unit two can be used to respectively photograph the front and back sides of the circuit board to obtain image information of the circuit board, thereby assisting in the judgment of appearance defects of the circuit board.

[0006] Preferably, one side of the bevel gear is fixedly connected to the output shaft of the motor, and the top of the motor is fixedly connected to the fixing plate, so that the motor can be used to drive the bevel gear to rotate, and the fixing plate is used to reinforce the installation of the motor.

[0007] Preferably, a hydraulic cylinder is fixedly connected to the bottom of the detection frame, a connecting frame is fixedly connected to the bottom of the hydraulic cylinder, and a detection unit 1 is fixedly connected to the bottom of the connecting frame, so that the hydraulic cylinder can be used to drive the lifting and lowering of the connecting frame, thereby adjusting the use height of the detection unit 1.

[0008] Preferably, the bottom of the second detection frame is fixedly connected to the inner wall of the frame, a fan is provided on one side of the second detection frame, and the bottom of the fan is fixedly connected to the fixing plate, so that the fan can accelerate the air flow on the top of the detection platform, thereby reducing the residue of dust and debris on the circuit board.

[0009] Preferably, a placement hole is opened on the top of the testing platform, and a built-in frame is fixedly connected to the inner wall of the placement hole, so that the U-shaped built-in frame can support the bottom of the circuit board.

[0010] Preferably, a limiting block is overlapped on the top of the built-in frame, and a spring is installed between the limiting block and the inner wall of the placement hole to facilitate the limiting block to overlap with the side wall of the circuit board and clamp and limit the circuit board.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the present invention, the detection unit 2 and the detection unit 3 are symmetrically arranged. When the circuit board moves with the detection frame 2 to the bottom of the detection frame 2, the circuit board is located in the image acquisition interval. The detection unit 2 and the detection unit 3 can respectively obtain image information of the front and back sides of the circuit board, thereby realizing simultaneous detection of the front and back sides of the circuit board, avoiding flipping of the circuit board during detection of the back side, and shortening the detection time.

[0013] 2. In the utility model, the base can be used to support the bottom of the detection frame one, and the upper and lower sides of the hydraulic cylinder are respectively connected to the detection frame one and the connecting frame. The hydraulic cylinder can be used to drive the connecting frame to rise and fall, thereby adjusting the height of the two detection units one. The detection unit one can collect image information of the side of the circuit board, and the image information in multiple directions can be integrated to improve the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a circuit board appearance rapid detection device is proposed for the utility model;

[0015] Figure 2 The utility model provides a schematic diagram of the installation of a limit block structure of a circuit board appearance rapid detection device;

[0016] Figure 3 The utility model provides a schematic diagram of the structure of a fixing plate and a detection unit of a circuit board appearance rapid detection device;

[0017] Figure 4 The utility model provides a schematic diagram of the structure of a bevel gear of a circuit board appearance rapid detection device.

[0018] Legend: 1. Detection frame 1; 2. Detection table; 3. Frame; 4. Control panel; 5. Fan; 6. Detection frame 2; 7. Hydraulic cylinder; 8. Detection unit 1; 9. Built-in frame; 10. Motor; 11. Limit block; 12. Detection unit 2; 13. Base; 14. Fixed plate; 15. Detection unit 3; 16. Bevel gear 1; 17. Bevel gear 2; 18. Connecting frame. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a circuit board appearance rapid detection device, comprising: a frame 3, a control panel 4 is fixedly connected to one side of the frame 3, a fixing plate 14 is fixedly connected to the inner wall of the frame 3, a detection mechanism is arranged above the fixing plate 14, the detection mechanism comprises a detection frame 1, a detection frame 2 6 and a detection unit 3 15, a base 13 is fixedly connected to the bottom of the detection frame 1, a detection platform 2 is rotatably connected to the bottom of the base 13, a bevel gear 2 17 is fixedly connected to the bottom of the detection platform 2, the bevel gear 2 17 is rotatably connected to the fixing plate 14, and a bevel gear 16 is meshed on one side of the bevel gear 2 17, the top of the fixing plate 14 is fixedly connected to the detection unit 3 15, a detection unit 2 12 is arranged above the detection unit 3 15, the top of the detection unit 2 12 is fixedly connected to the detection frame 2 6, the detection unit 3 15 and the detection unit 2 12 are arranged symmetrically from top to bottom, the detection unit 3 15 and the detection unit 2 12 can be used to respectively shoot the front and back sides of the circuit board to obtain image information of the circuit board, thereby assisting in the judgment of the appearance defects of the circuit board.

[0022] like Figure 4 As shown, one side of the bevel gear 16 is fixedly connected to the output shaft of the motor 10, and the top of the motor 10 is fixedly connected to the fixing plate 14, so that the motor 10 can be used to drive the bevel gear 16 to rotate, and the fixing plate 14 is used to reinforce the installation of the motor 10.

[0023] like Figure 2 and Figure 3As shown, a hydraulic cylinder 7 is fixedly connected to the bottom of the detection frame 1, a connecting frame 18 is fixedly connected to the bottom of the hydraulic cylinder 7, and a detection unit 8 is fixedly connected to the bottom of the connecting frame 18, so that the hydraulic cylinder 7 can be used to drive the lifting of the connecting frame 18, thereby adjusting the use height of the detection unit 8.

[0024] like Figure 1 and Figure 2 As shown, the bottom of the detection frame 2 6 is fixedly connected to the inner wall of the frame 3, and a fan 5 is provided on one side of the detection frame 2 6. The bottom of the fan 5 is fixedly connected to the fixed plate 14, so that the fan 5 can accelerate the air flow on the top of the detection platform 2, thereby reducing the dust and debris remaining on the circuit board.

[0025] like Figure 2 As shown, a placement hole is provided on the top of the testing platform 2, and an internal frame 9 is fixedly connected to the inner wall of the placement hole, so that the internal frame 9 in the shape of a square supports the bottom of the circuit board.

[0026] like Figure 2 As shown, a limiting block 11 is overlapped on the top of the built-in frame 9, and a spring is installed between the limiting block 11 and the inner wall of the placement hole to facilitate the limiting block 11 to overlap with the side wall of the circuit board to clamp and limit the circuit board.

[0027] The use method and working principle of the device: First, cameras are installed inside the detection unit 1 8, the detection unit 2 12 and the detection unit 3 15, the limit block 11 is moved, the PCB circuit board is placed in the placement hole, the limit block 11 is loosened, and the spring drives the limit block 11 to reset. The limit block 11 clamps both sides of the circuit board to limit the circuit board, and the motor 10 drives the bevel gear 1 16 to rotate, and the bevel gear 1 16 drives the bevel gear 2 17 and the detection table 2 to rotate to change the position of the circuit board. When the circuit board moves to the side of the fan 5, the dust and debris on the surface of the circuit board can be blown away, and the detection table 2 continues to rotate. When the circuit board rotates to the bottom of the detection frame 2 6, The detection unit 2 12 and the detection unit 3 15 can be used to photograph the front and back sides of the circuit board respectively, so as to obtain the image information of the circuit board. The detection table 2 continues to rotate. During the rotation of the detection table 2, the positions of the base 13 and the detection frame 1 remain unchanged. When the circuit board moves to the bottom of the detection frame 1, the hydraulic cylinder 7 drives the connecting frame 18 to move down. The two detection units 18 are used to photograph the side of the circuit board. The collected image information is processed by an external controller to determine whether there are appearance defects. The false point filtering system is used to filter out 90% of the false points scanned, and only the real point data is retained. The inspector only needs to confirm the real point, thereby reducing human missed inspections;

[0028] Before testing, experienced and professional project defect classifiers will annotate and collect various types of defects, including acceptable and unacceptable defect types. AI will extract key features based on the collected annotated defect images and establish a preliminary AI model. Experienced personnel will verify the detection performance of the AI ​​system, collect and classify data on AI system errors, summarize and optimize the preliminary AI model, and thus establish a stable training model.

[0029] Use the camera to obtain the image information of the circuit board, share the information with the AI ​​system, set the defect parameters in the AI ​​system according to the customer's product specifications, and compare the single defect area, width, height and defect quantity information and parameters when detecting defects to determine whether the parameter limit is exceeded, so as to determine whether the defect image meets the standard. Defect images that do not meet the customer's acceptable standards are displayed on the page for manual review. After processing by the AI ​​system, false points can be effectively filtered out and true point data can be retained. Inspectors only need to confirm the true points, thereby reducing human missed inspections, improving the OQC LOT acceptance rate, and thus reducing customer complaints and saving manpower.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A circuit board appearance rapid detection device, characterized in that: include: A frame (3), a control panel (4) is fixedly connected to one side of the frame (3), a fixing plate (14) is fixedly connected to the inner wall of the frame (3), a detection mechanism is arranged above the fixing plate (14), the detection mechanism comprises a detection frame 1 (1), a detection frame 2 (6) and a detection unit 3 (15), a base (13) is fixedly connected to the bottom of the detection frame 1 (1), a detection platform (2) is rotatably connected to the bottom of the base (13), a bevel gear 2 (17) is fixedly connected to the bottom of the detection platform (2), the bevel gear 2 (17) is rotatably connected to the fixing plate (14), and a bevel gear 1 (16) is meshed on one side of the bevel gear 2 (17), the top of the fixing plate (14) is fixedly connected to the detection unit 3 (15), a detection unit 2 (12) is arranged above the detection unit 3 (15), and the top of the detection unit 2 (12) is fixedly connected to the detection frame 2 (6).

2. A circuit board appearance rapid detection device according to claim 1, characterized in that: One side of the bevel gear (16) is fixedly connected to the output shaft of the motor (10), and the top of the motor (10) is fixedly connected to the fixing plate (14).

3. A circuit board appearance rapid detection device according to claim 1, characterized in that: The bottom of the detection frame 1 (1) is fixedly connected to a hydraulic cylinder (7), the bottom of the hydraulic cylinder (7) is fixedly connected to a connecting frame (18), and the bottom of the connecting frame (18) is fixedly connected to a detection unit 1 (8).

4. A circuit board appearance rapid detection device according to claim 1, characterized in that: The bottom of the second detection frame (6) is fixedly connected to the inner wall of the frame (3), a fan (5) is arranged on one side of the second detection frame (6), and the bottom of the fan (5) is fixedly connected to the fixing plate (14).

5. A circuit board appearance rapid detection device according to claim 1, characterized in that: A placement hole is provided on the top of the detection platform (2), and a built-in frame (9) is fixedly connected to the inner wall of the placement hole.

6. A circuit board appearance rapid detection device according to claim 5, characterized in that: The top of the built-in frame (9) is overlapped with a limiting block (11), and a spring is installed between the limiting block (11) and the inner wall of the placement hole.

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