Metal plate appearance detection equipment based on image sensor

Abstract

The invention relates to the technical field of appearance detection, and discloses a metal plate appearance detection device based on an image sensor, which comprises a cabinet body, the inner wall of the cabinet body is fixedly connected with a support frame, the inner wall of the support frame is rotatably connected with a reciprocating screw rod, the top of the support frame is fixedly connected with a slide way, and the inner wall of the slide way is slidably connected with a placing plate. According to the metal plate defect detection device, in the process that a metal plate slowly moves, a view blind area can be eliminated, full-surface missing-free detection can be achieved, the metal plate defect directivity characteristic can be enhanced, the recognition precision of an image sensor is improved, the detection precision of the device on the metal plate is improved, and the detection efficiency is improved. The top plate can push the metal plate placed on the top of the placing plate to generate a jitter-like effect, so that reflection interference can be reduced, the image contrast can be improved, and the reliability of appearance detection and measurement of the metal plate can be improved.

Description

Technical Field

[0001] This invention relates to the field of appearance inspection technology, specifically to a metal plate appearance inspection device based on an image sensor. Background Technology

[0002] Metal sheets are widely used in industries such as steel and automobiles. Their appearance quality directly affects product performance and safety. Traditional manual inspection relies on the human eye, which has problems such as low efficiency, strong subjectivity, and easy to miss detections, making it difficult to meet the needs of high-speed production lines. With the development of machine vision technology, inspection equipment based on image sensors is gradually replacing manual labor. It uses CCD / CMOS cameras to collect images and combines image processing algorithms to identify defects. However, existing equipment is easily affected by light interference when dealing with highly reflective surfaces, fine defects, and complex textures, resulting in insufficient recognition accuracy and poor adaptability. It is necessary to optimize the optical system and algorithms to improve the stability and accuracy of inspection.

[0003] Patent CN205580384U discloses a metal plate surface inspection device, including a PC terminal connected to an image acquisition card. The image acquisition card is connected to a workpiece detection locator, a CCD camera, and a laser. A main conveyor belt is positioned below the workpiece detection locator, CCD camera, and laser. A laser sensor is located at the entrance of the main conveyor belt. A secondary conveyor belt is positioned on the side of the main conveyor belt, and the main and secondary conveyor belts are movably connected via a connector. A pinhole filter is located at the bottom of the laser, and a beam expander and collimating lens are sequentially positioned at the bottom of the pinhole filter. This patent, through this structure, allows adjustment according to the width of the metal plate, ensuring the metal plate moves along an optimal path for visual inspection. Furthermore, this inspection process does not damage the metal plate and avoids the influence of external stray light on the inspection results, guaranteeing the accuracy of the final inspection result.

[0004] Although the device can detect appearance defects in metal plates, the detector is fixed at one point and the workpiece tends to be stationary during the inspection, resulting in blind spots in the metal plate inspection area. This can easily lead to incomplete metal plate inspection and reduce the appearance inspection effect of the device. Therefore, a metal plate appearance inspection device based on an image sensor is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a metal plate appearance inspection device based on an image sensor, which addresses the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a metal plate appearance inspection device based on an image sensor, comprising a cabinet, a support frame fixedly connected to the inner wall of the cabinet, a reciprocating screw rotatably connected to the inner wall of the support frame, a slide rail fixedly connected to the top of the support frame, a placement plate slidably connected to the inner wall of the slide rail, a movable plate movably connected to the circumferential surface of the reciprocating screw, a pusher fixedly connected to the top of the movable plate, a limit post fixedly connected to the inner wall of the cabinet, a fixing block 1 fixedly connected to the circumferential surface of the reciprocating screw, a protrusion 1 fixedly connected to the circumferential surface of the fixing block 1, an elastic telescopic rod 1 fixedly connected to the bottom of the placement plate, a horizontal plate fixedly connected to the telescopic end of the elastic telescopic rod 1, a fixing column fixedly connected to the inner wall of the horizontal plate, a protrusion 2 fixedly connected to the bottom of the fixing column, a top plate fixedly connected to the circumferential surface of the fixing column, a motor disposed on the inner wall of the cabinet, an image sensor disposed on the inner wall of the cabinet, and the cabinet... The inner wall is equipped with an adjustment mechanism for focusing light, and the inner wall of the placement plate is equipped with a protective mechanism for preventing plate displacement. The reciprocating screw is fixedly connected to the output end of the motor. The moving plate is slidably connected to the circumferential surface of the limiting post. The pushing frame is in contact with the placement plate and is used to push the placement plate to move. The top plate is in contact with the placement plate and is used to push the metal plate to be inspected. The second protrusion is located on the movement trajectory of the first protrusion. It can simultaneously detect and test the appearance data of the metal plate during the slow movement of the metal plate, eliminate blind spots, achieve full-surface inspection without omission, enhance the directional characteristics of metal plate defects, improve the accuracy of image sensor recognition, and improve the detection accuracy of the device for metal plates. The top plate can push the metal plate placed on top of the placement plate, producing a shaking effect, which can reduce reflection interference, improve image contrast, enhance the feature representation of three-dimensional defects of the metal plate, and improve the reliability of metal plate appearance inspection and measurement.

[0007] Preferably, the adjustment mechanism includes an electric push rod, a connecting plate, an inclined block, and a partition plate. The electric push rod is fixedly connected to the top of the placement plate, the connecting plate is fixedly connected to the telescopic end of the electric push rod, the inclined block is slidably connected to the inner wall of the connecting plate, and the partition plate is fixedly connected to the left side of the connecting plate. The adjustment mechanism also includes a fixing frame, a hinge column, a fixing frame, a reflector, and a top column. The fixing frame is fixedly connected to the inner wall of the cabinet, the hinge column is rotatably connected to the inner wall of the fixing frame via a torsion spring, the fixing frame is fixedly connected to the circumferential surface of the hinge column, the reflector is fixedly connected to the inner wall of the fixing frame, and the top column is fixedly connected to the top of the horizontal plate. The plate contacts the placement plate, and the connecting plate is used to push the metal plate to the detection center. The isolation plate contacts the placement plate, and the isolation plate is used to prevent the metal plate from deviating out of the detection area. This can prevent the metal plate from falling out of the detection range of the image sensor during the process of being pushed by the top plate, ensuring the clarity of the generated image, preventing drastic image displacement, reducing the difficulty of algorithm processing, and improving the smoothness of appearance inspection of the device. The angle rotation adjustment of the reflector can improve the dynamic adjustment of the illumination angle, highlight different types of defects, reduce the blind spot of the image sensor, expand the detection area, and improve the accuracy of the appearance inspection data of the metal plate.

[0008] Preferably, the protective mechanism includes a second fixed block, a slider, a pull rod, a second elastic telescopic rod, and a clamping plate. The second fixed block is fixedly connected to the inner wall of the isolation plate, the slider is slidably connected to the inner wall of the placement plate, the pull rod is rotatably connected to the circumferential surface of the second fixed block, the second elastic telescopic rod is fixedly connected to the inner wall of the slider, and the clamping plate is fixedly connected to the telescopic end of the second elastic telescopic rod. The protective mechanism also includes an exhaust fan, a connecting cover, a filter plate, a suction plate, and a connecting pipe. The exhaust fan is fixedly connected to the top of the placement plate, the connecting cover is fixedly connected to the circumferential surface of the exhaust fan, the filter plate is fixedly connected to the inner wall of the connecting cover, the suction plate is fixedly connected to the inner wall of the connecting plate, and the connecting pipe is fixedly connected to the inner wall of the connecting cover. The pull rod is rotatably connected to the circumferential surface of the slider. The clamping plate contacts the placement plate and is used to push the metal plate to move towards the center. The connecting cover is connected to the exhaust fan, and the suction plate is fixedly connected to the connecting pipe. This allows the clamping plate to contact both sides of the metal plate placed on top of the placement plate and push the metal plate towards the detection center area, ensuring that the metal plate is always located in the detection center area. This improves the detection speed of the device for metal plates and enhances the appearance inspection efficiency of the device. It can also suck up dust and debris generated on the surface of the metal plate. Dust and debris will reach the connecting cover area through the connecting pipe and stop on the surface of the filter plate, effectively solving the problem of debris and dust on the surface of the metal plate and improving the accuracy of the appearance inspection of the metal plate.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This image sensor-based metal plate appearance inspection equipment, through the mutual movement between the cabinet, support frame, reciprocating screw, slide rail, placement plate, moving plate, pushing frame, limiting column, fixed block one, protrusion one, elastic telescopic rod one, horizontal plate, fixed column, protrusion two, and top plate, can simultaneously detect and test the appearance data of the metal plate while it is slowly moving. It can eliminate blind spots, achieve full-surface inspection without omissions, enhance the directional characteristics of metal plate defects, improve the accuracy of image sensor recognition, and improve the detection accuracy of the device for metal plates. The top plate can push the metal plate placed on top of the placement plate, producing a shaking effect, which can reduce reflection interference, improve image contrast, enhance the characteristic representation of three-dimensional defects in the metal plate, and improve the reliability of metal plate appearance inspection and measurement.

[0010] 2. This image sensor-based metal plate appearance inspection device, through the mutual movement between the electric push rod, connecting plate, inclined block, isolation plate, fixed frame, hinged column, fixed frame, reflector, and top column, can prevent the metal plate from falling out of the image sensor's detection range during the process of being pushed by the top plate. This ensures the clarity of the generated image, prevents drastic image displacement, reduces the difficulty of algorithm processing, and improves the smoothness of the device's appearance inspection. The angle rotation adjustment of the reflector can improve the dynamic adjustment of the illumination angle, highlight different types of defects, reduce the blind spot of the image sensor, expand the detection area, and improve the accuracy of the metal plate appearance inspection data.

[0011] 3. This image sensor-based metal plate appearance inspection device, through the mutual movement of fixed block two, slider, pull rod, elastic telescopic rod two, clamping plate, exhaust fan, connecting cover, filter plate, suction plate, and connecting pipe, causes the clamping plate to contact the two sides of the metal plate placed on the top of the placement plate and push the metal plate towards the detection center area. This ensures that the metal plate is always located in the detection center area, which can improve the detection speed of the device and enhance the appearance inspection efficiency. It can also suck up dust and debris generated on the surface of the metal plate. Dust and debris will reach the connecting cover area through the connecting pipe and stop on the surface of the filter plate, which can effectively solve the problem of debris and dust on the surface of the metal plate and improve the accuracy of metal plate appearance inspection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a half-sectional view of the cabinet structure of the present invention; Figure 3 This is a schematic diagram of the reciprocating lead screw structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle; Figure 5This is a schematic diagram of the adjustment mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of the structure at point B in the middle; Figure 7 This is a schematic diagram of the protective mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure at point C.

[0013] In the diagram: 1. Cabinet; 2. Support frame; 3. Reciprocating screw; 4. Slide rail; 5. Placement plate; 6. Adjustment mechanism; 7. Protective mechanism; 8. Moving plate; 9. Push frame; 10. Limiting post; 11. Fixing block one; 12. Protrusion one; 13. Elastic telescopic rod one; 14. Horizontal plate; 15. Fixing post; 16. Protrusion two; 17. Top plate; 601. Electric push rod; 602. Connecting plate; 603. Inclined block; 604. Isolation plate; 605. Fixing frame; 606. Hinge post; 607. Fixing frame; 608. Reflector; 609. Top post; 701. Fixing block two; 702. Slider; 703. Pull rod; 704. Elastic telescopic rod two; 705. Clamping plate; 706. Exhaust fan; 707. Connecting cover; 708. Filter plate; 709. Suction plate; 710. Connecting pipe. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-8 One embodiment of the present invention is: a metal plate appearance inspection device based on an image sensor, comprising a cabinet 1, a support frame 2 fixedly connected to the inner wall of the cabinet 1, a reciprocating screw 3 rotatably connected to the inner wall of the support frame 2, a slide rail 4 fixedly connected to the top of the support frame 2, a placement plate 5 slidably connected to the inner wall of the slide rail 4, a movable plate 8 movably connected to the circumferential surface of the reciprocating screw 3, a pusher 9 fixedly connected to the top of the movable plate 8, and a limit post 10 fixedly connected to the inner wall of the cabinet 1. A fixing block 11 is fixedly connected to the circumferential surface of the cabinet 1. A protrusion 12 is fixedly connected to the circumferential surface of the fixing block 11. An elastic telescopic rod 13 is fixedly connected to the bottom of the placement plate 5. A horizontal plate 14 is fixedly connected to the telescopic end of the elastic telescopic rod 13. A fixing column 15 is fixedly connected to the inner wall of the horizontal plate 14. A protrusion 2 16 is fixedly connected to the bottom of the fixing column 15. A top plate 17 is fixedly connected to the circumferential surface of the fixing column 15. A motor is installed on the inner wall of the cabinet 1. An image sensor is installed on the inner wall of the cabinet 1. When the device is started, the operator first needs to place the metal plate to be tested for appearance onto the detection center area on top of the placement plate 5 using a robotic arm or other transport equipment. After the metal plate is placed, the motor will start, and the motor output will drive the reciprocating screw 3 to rotate. The rotation of the reciprocating screw 3 will drive the moving plate 8 to rotate. However, at this time, the moving plate 8 is limited by the movement of the limiting post 10. The limiting post 10 will cause the moving plate 8 to move laterally back and forth through the reciprocating groove on the surface of the reciprocating screw 3 during the rotation of the reciprocating screw 3. The movement of the moving plate 8 will drive... The pusher 9 moves, and after the pusher 9 moves, it will push the placement plate 5 to move on the inner wall of the slide 4. The movement of the placement plate 5 will drive the metal plate placed on top of it to move slowly. During the slow movement of the metal plate, the image sensor on the inner wall of the cabinet 1 will be activated. It can simultaneously detect and test the appearance data of the metal plate during the slow movement of the metal plate, which can eliminate blind spots, achieve full surface detection without omission, enhance the directional characteristics of metal plate defects, improve the accuracy of image sensor recognition, and improve the detection accuracy of the device for metal plates. The inner wall of the cabinet 1 is provided with an adjustment mechanism 6 for focusing light, the inner wall of the placement plate 5 is provided with a protective mechanism 7 for preventing plate displacement, the reciprocating screw 3 is fixedly connected to the output end of the motor, the moving plate 8 is slidably connected to the circumferential surface of the limiting column 10, the pushing frame 9 is in contact with the placement plate 5 and is used to push the placement plate 5 to move, the top plate 17 is in contact with the placement plate 5 and is used to push the metal plate to be tested, and the second protrusion 16 is located on the movement trajectory of the first protrusion 12; When the device is activated, the movement of the placement plate 5 will cause the elastic telescopic rod 13 to move, which in turn will cause the horizontal plate 14 to move. The movement of the horizontal plate 14 will then cause the fixed column 15 to move, which in turn will cause the protrusion 16 to move. Simultaneously, the movement of the fixed column 15 will cause the top plate 17 to move. While the top plate 17 is moving, the rotation of the reciprocating screw 3 will cause the fixed block 11 to rotate, which in turn will cause the protrusion 12 to rotate. After the protrusion 12 rotates a certain angle, the protrusion 12... It will contact the arc surface of the second protrusion 16. At this time, the first protrusion 12 will continue to rotate. The first protrusion 12 can squeeze and push the second protrusion 16 to rise through its own arc surface. The rise of the second protrusion 16 will drive the fixed column 15 to rise. The rise of the fixed column 15 will drive the top plate 17 to rise. During the rise, the top plate 17 can push the metal plate placed on the top of the placement plate 5, producing a shaking effect. This can reduce reflection interference, improve image contrast, enhance the feature representation of three-dimensional defects of the metal plate, and improve the reliability of metal plate appearance inspection and measurement. Overall working principle: During the slow movement of the metal plate driven by the placement plate 5, the image sensor on the inner wall of the cabinet 1 is activated. It can simultaneously detect and test the appearance data of the metal plate during the slow movement of the metal plate, eliminate blind spots, achieve full-surface detection without omissions, enhance the directional characteristics of metal plate defects, improve the recognition accuracy of the image sensor, and improve the detection accuracy of the device for metal plates. The rise of the fixed column 15 will drive the top plate 17 to rise. During the rise of the top plate 17, the top plate 17 can push the metal plate placed on top of the placement plate 5, producing a shaking effect, which can reduce reflection interference, improve image contrast, enhance the characteristic representation of three-dimensional defects of the metal plate, and improve the reliability of metal plate appearance detection and measurement.

[0016] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, the adjustment mechanism 6 includes an electric push rod 601, a connecting plate 602, an inclined block 603, and an isolation plate 604. The electric push rod 601 is fixedly connected to the top of the placement plate 5, the connecting plate 602 is fixedly connected to the telescopic end of the electric push rod 601, the inclined block 603 is slidably connected to the inner wall of the connecting plate 602, and the isolation plate 604 is fixedly connected to the left side of the connecting plate 602. When the device is in use, after the metal plate is placed on top of the placement plate 5, the electric push rod 601 will be activated. The telescopic end of the electric push rod 601 will drive the connecting plate 602 to move. The movement of the connecting plate 602 will drive the inclined block 603 to move. At the same time, the movement of the connecting plate 602 will drive the isolation plate 604 to move. After moving a certain distance, the inclined surface of the inclined block 603 will contact the metal plate placed on top of the placement plate 5. After contact with the metal plate, the inclined block 603 will continue to move. During this movement of the inclined block 603, the metal plate will... The inclined block 603 is indirectly pushed upward by the reaction force. At this time, the bottom of the inclined block 603 will contact the metal plate. During the process of the metal plate being pushed upward by the top plate 17, the top plate 17 will also drive the inclined block 603 to rise. After the inclined block 603 rises a certain distance, the inclined block 603 will stop rising. The stopping of the inclined block 603 will drive the metal plate to stop rising. This can prevent the metal plate from falling and exceeding the detection range of the image sensor during the process of being pushed by the top plate 17. It can ensure the clarity of the generated image, prevent the image from shifting violently, reduce the difficulty of algorithm processing, and improve the smoothness of appearance detection of the device. The adjustment mechanism 6 also includes a fixed frame 605, a hinge column 606, a fixed frame 607, a reflector 608, and a top column 609. The fixed frame 605 is fixedly connected to the inner wall of the cabinet 1. The hinge column 606 is rotatably connected to the inner wall of the fixed frame 605 by a torsion spring. The fixed frame 607 is fixedly connected to the circumferential surface of the hinge column 606. The reflector 608 is fixedly connected to the inner wall of the fixed frame 607. The top column 609 is fixedly connected to the top of the horizontal plate 14. The connecting plate 602 is in contact with the placement plate 5 and is used to push the metal plate to the detection center. The isolation plate 604 is in contact with the placement plate 5 and is used to prevent the metal plate from shifting out of the detection area. When the device is started, the rise of the horizontal plate 14 will drive the top column 609 to rise, the rise of the top column 609 will drive the hinge column 606 to rotate, the rotation of the hinge column 606 will drive the fixed frame 607 to rotate, the rotation of the fixed frame 607 will drive the reflector 608 to rotate, and the reflector 608 can adjust its angle during the rotation process. The angle adjustment of the reflector 608 can improve the dynamic adjustment of the illumination angle, highlight different types of defects, reduce the blind spot of the image sensor, expand the detection area, and improve the accuracy of the metal plate appearance inspection data. The protective mechanism 7 includes a fixed block 701, a slider 702, a pull rod 703, an elastic telescopic rod 704, and a clamping plate 705. The fixed block 701 is fixedly connected to the inner wall of the isolation plate 604, the slider 702 is slidably connected to the inner wall of the placement plate 5, the pull rod 703 is rotatably connected to the circumferential surface of the fixed block 701, the elastic telescopic rod 704 is fixedly connected to the inner wall of the slider 702, and the clamping plate 705 is fixedly connected to the telescopic end of the elastic telescopic rod 704. When the device is started, the movement of the isolation plate 604 will drive the movement of the fixed block 701, which in turn will drive the pull rod 703. During the movement, the pull rod 703 will change its angle. During the angle adjustment, the pull rod 703 will drive the slider 702, which in turn will drive the elastic telescopic rod 704, which will then drive the clamping plate 705. During the movement, the clamping plate 705 will contact the two sides of the metal plate placed on top of the placement plate 5 and push the metal plate towards the detection center area. This ensures that the metal plate is always located in the detection center area, thereby improving the detection speed of the metal plate and enhancing the appearance inspection efficiency of the device. The protective mechanism 7 also includes an exhaust fan 706, a connecting cover 707, a filter plate 708, a suction plate 709, and a connecting pipe 710. The exhaust fan 706 is fixedly connected to the top of the placement plate 5, the connecting cover 707 is fixedly connected to the circumferential surface of the exhaust fan 706, the filter plate 708 is fixedly connected to the inner wall of the connecting cover 707, the suction plate 709 is fixedly connected to the inner wall of the connecting plate 602, the connecting pipe 710 is fixedly connected to the inner wall of the connecting cover 707, the pull rod 703 is rotatably connected to the circumferential surface of the slider 702, the clamping plate 705 is in contact with the placement plate 5, and the clamping plate 705 is used to push the metal plate to move towards the center. The connecting cover 707 is connected to the exhaust fan 706, and the suction plate 709 is fixedly connected to the connecting pipe 710. When the device is in use, the connecting plate 602 moves, which in turn moves the suction plate 709. After moving a certain distance, the suction plate 709 will be positioned close to the metal plate placed on top of the placement plate 5. At this time, the exhaust fan 706 will start, and the exhaust fan 706 will achieve the exhaust effect. The exhaust fan 706 will connect with the connecting cover 707 and the connecting pipe 710, so that the suction plate 709 can draw air from its own nozzle area. At this time, the suction plate 709 can suck up the dust and debris generated on the surface of the metal plate. The dust and debris will reach the area of ​​the connecting cover 707 through the connecting pipe 710 and stop on the surface of the filter plate 708, which can effectively solve the problem of debris and dust on the surface of the metal plate and improve the accuracy of the appearance inspection of the metal plate. Overall working principle: The top plate 17 also drives the inclined block 603 to rise. After rising a certain distance, the inclined block 603 stops rising. The stopping of the inclined block 603 will also cause the metal plate to stop rising. This can prevent the metal plate from falling out of the detection range of the image sensor during the process of being pushed by the top plate 17, ensuring the clarity of the generated image, preventing drastic image displacement, reducing the difficulty of algorithm processing, and improving the smoothness of appearance inspection of the device. During the rotation of the reflector 608, the reflector 608 can adjust a certain angle. The angle adjustment of the reflector 608 can improve the dynamic adjustment of the illumination angle, highlight different types of defects, and reduce the blind spot of the image sensor. The device expands the detection area and improves the accuracy of metal plate appearance inspection data. The clamping plate 705 contacts both sides of the metal plate placed on top of the placement plate 5 and pushes the metal plate towards the detection center area, ensuring that the metal plate is always located in the detection center area. This improves the detection speed of the device and enhances the appearance inspection efficiency. The suction plate 709 can draw air from its own nozzle area, allowing it to suck up dust and debris generated on the surface of the metal plate. The dust and debris will reach the connecting cover 707 area through the connecting pipe 710 and stop on the surface of the filter plate 708, effectively solving the problem of debris and dust on the surface of the metal plate and improving the accuracy of metal plate appearance inspection.

[0017] This invention provides a metal plate appearance inspection device based on an image sensor. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A metal plate appearance inspection device based on an image sensor, comprising a cabinet (1), characterized in that: A support frame (2) is fixedly connected to the inner wall of the cabinet (1). A reciprocating screw (3) is rotatably connected to the inner wall of the support frame (2). A slide rail (4) is fixedly connected to the top of the support frame (2). A placement plate (5) is slidably connected to the inner wall of the slide rail (4). A moving plate (8) is movably connected to the circumferential surface of the reciprocating screw (3). A pusher (9) is fixedly connected to the top of the moving plate (8). A limit post (10) is fixedly connected to the inner wall of the cabinet (1). A fixing block (11) is fixedly connected to the circumferential surface of the reciprocating screw (3). The circumferential surface of the fixed block (11) is fixedly connected to the protrusion (12), the bottom of the placement plate (5) is fixedly connected to the elastic telescopic rod (13), the telescopic end of the elastic telescopic rod (13) is fixedly connected to the horizontal plate (14), the inner wall of the horizontal plate (14) is fixedly connected to the fixed column (15), the bottom of the fixed column (15) is fixedly connected to the protrusion (2) (16), the circumferential surface of the fixed column (15) is fixedly connected to the top plate (17), the inner wall of the cabinet (1) is provided with a motor, and the inner wall of the cabinet (1) is provided with an image sensor.

2. The metal plate appearance inspection device based on an image sensor according to claim 1, characterized in that: The inner wall of the cabinet (1) is provided with an adjustment mechanism (6) for focusing light, and the inner wall of the placement plate (5) is provided with a protective mechanism (7) for preventing plate displacement. The reciprocating screw (3) is fixedly connected to the output end of the motor. The moving plate (8) is slidably connected to the circumferential surface of the limiting column (10). The pushing frame (9) is in contact with the placement plate (5) and is used to push the placement plate (5) to move.

3. The metal plate appearance inspection device based on an image sensor according to claim 2, characterized in that: The top plate (17) is in contact with the placement plate (5), and the top plate (17) is used to push the metal plate to be tested. The second protrusion (16) is located on the movement trajectory of the first protrusion (12).

4. The metal plate appearance inspection device based on an image sensor according to claim 3, characterized in that: The adjustment mechanism (6) includes an electric push rod (601), a connecting plate (602), an inclined block (603), and an isolation plate (604). The electric push rod (601) is fixedly connected to the top of the placement plate (5). The connecting plate (602) is fixedly connected to the telescopic end of the electric push rod (601). The inclined block (603) is slidably connected to the inner wall of the connecting plate (602). The isolation plate (604) is fixedly connected to the left side of the connecting plate (602).

5. The metal plate appearance inspection device based on an image sensor according to claim 4, characterized in that: The adjustment mechanism (6) further includes a fixed frame (605), a hinge column (606), a fixed frame (607), a reflector (608), and a top column (609). The fixed frame (605) is fixedly connected to the inner wall of the cabinet (1). The hinge column (606) is rotatably connected to the inner wall of the fixed frame (605) by a torsion spring. The fixed frame (607) is fixedly connected to the circumferential surface of the hinge column (606). The reflector (608) is fixedly connected to the inner wall of the fixed frame (607). The top column (609) is fixedly connected to the top of the horizontal plate (14).

6. The metal plate appearance inspection device based on an image sensor according to claim 5, characterized in that: The connecting plate (602) contacts the placement plate (5), and the connecting plate (602) is used to push the metal plate to the detection center. The isolation plate (604) contacts the placement plate (5), and the isolation plate (604) is used to prevent the metal plate from deviating out of the detection area.

7. The metal plate appearance inspection device based on an image sensor according to claim 6, characterized in that: The protective mechanism (7) includes a fixed block (701), a slider (702), a pull rod (703), an elastic telescopic rod (704), and a clamping plate (705). The fixed block (701) is fixedly connected to the inner wall of the isolation plate (604). The slider (702) is slidably connected to the inner wall of the placement plate (5). The pull rod (703) is rotatably connected to the circumferential surface of the fixed block (701). The elastic telescopic rod (704) is fixedly connected to the inner wall of the slider (702). The clamping plate (705) is fixedly connected to the telescopic end of the elastic telescopic rod (704).

8. The metal plate appearance inspection device based on an image sensor according to claim 7, characterized in that: The protective mechanism (7) also includes an exhaust fan (706), a connecting cover (707), a filter plate (708), a suction plate (709), and a connecting pipe (710). The exhaust fan (706) is fixedly connected to the top of the placement plate (5), the connecting cover (707) is fixedly connected to the circumferential surface of the exhaust fan (706), the filter plate (708) is fixedly connected to the inner wall of the connecting cover (707), the suction plate (709) is fixedly connected to the inner wall of the connecting plate (602), and the connecting pipe (710) is fixedly connected to the inner wall of the connecting cover (707).

9. The metal plate appearance inspection device based on an image sensor according to claim 8, characterized in that: The pull rod (703) is rotatably connected to the circumferential surface of the slider (702), the clamp (705) is in contact with the placement plate (5), and the clamp (705) is used to push the metal plate to move towards the center, the connecting cover (707) is connected to the exhaust fan (706), and the suction plate (709) is fixedly connected to the connecting pipe (710).

Images