Visual inspection device used after metal surface treatment and system thereof

Abstract

The invention relates to the technical field of metal surface defect detection equipment, in particular to a visual detection device used after metal surface treatment and a system thereof.The visual detection device comprises a feeding rack, a detection machine box and a discharging rack, a feeding conveying belt is arranged on the feeding rack, a discharging conveying belt is arranged on the discharging rack, and a shooting cavity is formed in the detection machine box; a camera is arranged at the top of the shooting cavity, auxiliary conveying rollers are arranged below the shooting cavity, a set of vertical plates are arranged between every two adjacent auxiliary conveying rollers, the bottoms of the multiple sets of vertical plates are jointly connected with a door-shaped driving frame, lateral supporting plates are arranged at the two ends of the door-shaped driving frame, Z-axis positioning seats are installed on the two sides of the shooting cavity, and dust suction machine bodies are installed on the two sides of the detection machine box. One end of the dust suction machine body is connected to the negative pressure assembly through a corrugated pipe, and an adsorption pore plate is detachably mounted at the other end of the dust suction machine body; according to the invention, not only can automatic feeding be realized, but also a closed detection space is ensured, and the accuracy and reliability of detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal surface defect detection equipment, and in particular to a visual detection device and a system thereof for metal surface treatment. Background Art

[0002] In modern manufacturing, metal materials are widely used in various fields due to their excellent physical and chemical properties. However, metal products often have surface defects during manufacturing and use. These defects not only affect the appearance, but may also affect the performance and service life of the material. Therefore, visual inspection devices are generally used to photograph and inspect the surface of objects, and high-resolution cameras are used to collect images of the metal surface in real time, which is convenient for workers or managers to carry out subsequent processing; However, in order to ensure the airtightness of the shooting space, existing visual inspection devices usually rely on workers to manually and repeatedly position and install the metal workpieces to be inspected in the inspection device one by one. This not only affects the inspection efficiency, but also increases the labor intensity of the workers. In addition, the surface of the workpiece to be inspected is usually not cleaned, and the inspection result is easily affected by the dirt on the surface of the workpiece to be inspected. Summary of the invention

[0003] The object of the present invention is to provide a visual inspection device and system for metal surface treatment to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a visual inspection device for metal surface treatment, which comprises a loading rack, a detection box and a unloading rack from left to right, wherein a loading conveyor belt is arranged on the loading rack, a unloading conveyor belt is arranged on the unloading rack, a shooting chamber is opened inside the detection box, a camera is arranged on the top of the shooting chamber, an auxiliary light source is arranged on the side wall of the shooting chamber, and a plurality of auxiliary conveying rollers distributed in a linear array are arranged below the shooting chamber, a group of vertical plates are vertically arranged between two adjacent auxiliary conveying rollers, and the bottoms of the plurality of groups of vertical plates are commonly connected to a portal-type active frame, the portal-type active frame is driven by a driving device and moves up and down in a straight line, and is used to lift the metal workpiece upward; a group of lateral support plates are rotatably installed at both horizontal ends of the portal-type active frame, and the lateral support plates are pushed by a pushing assembly to perform a 90° up and down deflection movement, and are used to perform horizontal side calibration and centering of the metal workpiece; A set of Z-axis positioning seats are installed on both the front and rear sides of the shooting cavity in a limited sliding manner. The two sets of Z-axis positioning seats are driven by a linkage assembly and move linearly toward each other, and are used to calibrate and center the front and rear sides of the metal workpiece. The linkage assembly is powered by a driving device; The detection chassis is provided with side through holes on both horizontal sides for accommodating a loading conveyor belt and a unloading conveyor belt. A group of dust collector bodies are installed on the upper end of each side through hole for limited sliding. One end of the dust collector body is connected to the negative pressure component through a bellows, and an adsorption hole plate is detachably installed on the other end of the dust collector body. The dust collector body is pushed by a driven component to move up and down in a straight line to open or close the side through holes. The driven component is powered by a driving device.

[0005] Preferably, a rectangular movable chamber for accommodating a portal-type active frame is provided inside the detection chassis, and the driving device includes a hydraulic cylinder, the end cover of the hydraulic cylinder is fixedly arranged at the bottom of the rectangular movable chamber, the piston rod of the hydraulic cylinder extends upward and is fixedly connected to the lower end surface of the portal-type active frame, and a group of linkage components are connected to the front and rear sides of the portal-type active frame.

[0006] Preferably, the linkage assembly includes an L-shaped push plate and a cylindrical bayonet, one end of the L-shaped push plate is fixedly connected to the door-type active frame, and the other end of the L-shaped push plate extends into the Z-axis positioning seat and is fixedly connected to the cylindrical bayonet.

[0007] Preferably, a dovetail guide bar is symmetrically arranged on the upper end of the Z-axis positioning seat, a slide groove matching the dovetail guide bar is opened inside the detection chassis, a rectangular slot opening downward is provided inside the Z-axis positioning seat, and drive slots for accommodating cylindrical pins are penetrated on both horizontal sides of the rectangular slot, and the drive slot is arranged as a V-shaped through groove.

[0008] Preferably, the driven assembly includes a driven rack, a steering wheel, an active rack and a transfer rod, the transfer rod is slidably installed in the detection chassis, one end of the transfer rod is fixedly connected to the gate-type active frame, and the other end of the transfer rod is fixedly connected to the active rack.

[0009] Preferably, the steering wheel is limitedly rotatably mounted on the detection chassis and meshedly connected to the active rack, and both ends of the side wall of the vacuum cleaner body are fixedly connected to a group of driven racks, and the driven racks are meshedly connected to the steering wheel.

[0010] Preferably, both horizontal ends of the portal-type active frame are provided with pre-set grooves for accommodating lateral support plates, one end of the lateral support plate is rotatably mounted on the portal-type active frame by a rotating shaft, and the bottom of the other end of the lateral support plate is set as an arc surface matching the conveyor belt.

[0011] Preferably, both ends of the rotating shaft extend out of the gate-type active frame and are connected to a group of pushing components, and the pushing components include a spur gear and a fixed rack, the spur gear is coaxially fixedly connected to the rotating shaft, the fixed rack is fixedly arranged on the side wall of the preset groove, and the gate-type active frame is also provided with a torsion spring sleeved on the rotating shaft.

[0012] Preferably, the loading rack and the unloading rack are fixedly connected to the horizontal sides of the detection chassis in sequence by screws, and the bottoms of the loading rack and the unloading rack are sealed.

[0013] A visual inspection system for metal surface treatment, a visual inspection device for metal surface treatment, the system comprising the following modules: Image acquisition module: used to capture high-resolution images of the treated metal surface; Image processing module: used to pre-process the collected images to improve detection accuracy; Defect Detection Module: Used to apply machine learning or deep learning algorithms to identify and classify metal surface defects; Data storage module: used to store test results and image data, and support query and management of historical data; User interface module: used to display the test results in real time and support parameter adjustment and system control; Control and communication module: used to manage the collaborative work of each module and the connection with other systems or equipment; System calibration module: used to regularly calibrate the system to ensure the accuracy and reliability of detection.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention forms an automatic detection module through the design of a feeding conveyor belt, a feeding frame, a transfer conveyor belt, a transfer frame, a camera, an auxiliary conveying roller, a dust collecting body and a lateral support plate. On the one hand, automatic feeding can be realized, thereby avoiding manual intervention and improving the overall efficiency of the production line; on the other hand, a relatively closed detection space can be realized, thereby reducing the interference of external environmental factors such as light and human factors on the detection results, and improving the accuracy and reliability of the detection.

[0015] 2. The present invention uses an L-shaped push plate and a cylindrical bayonet in conjunction with a V-shaped structure to convert the up-and-down movement of the portal active frame into the linear movement of two sets of Z-axis positioning seats. Thus, when the vertical plate lifts the metal workpiece to be processed upward for photographing, the Z-axis positioning seat can drive the pressing plate to quickly center and position the front and rear sides of the metal workpiece and quickly drive away, thereby ensuring the accuracy of the detection structure.

[0016] 3. The present invention can convert the linear up-and-down motion of the door-type active frame into the reverse up-and-down motion of two groups of vacuum cleaner bodies by using the driven rack, the steering wheel, the active rack and the transfer rod in coordination. When the adsorption hole plate at the bottom of the vacuum cleaner body moves up, the metal workpiece can be normally transported to the detection box, and the dust on the surface of the metal workpiece can be adsorbed and cleaned at the same time, thereby improving the accuracy of the detection result; and when the vacuum cleaner body moves down, it can block the side perforations of the side support plate, thereby ensuring the airtight performance of the detection environment.

[0017] 4. The spur gear, fixed rack and torsion spring can be used together to convert the up and down movement of the active door frame into the 90° up and down flipping movement of the two sets of lateral support plates. On the one hand, the lateral support plates can quickly center and release the horizontal sides of the metal workpiece when the vertical plate lifts the metal workpiece to be processed upward for photography. On the other hand, they can seal the side perforations together with the vacuum cleaner body in a flat state to ensure that the shooting environment is free of interference from external light sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic diagram of another viewing angle of the structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the present invention in a feeding state.

[0021] Figure 4 It is a schematic diagram of the present invention in a detection state.

[0022] Figure 5 It is a schematic diagram of detecting components inside a chassis according to the present invention.

[0023] Figure 6 It is a schematic diagram of another viewing angle of the present invention for detecting components inside the chassis.

[0024] Figure 7 It is a schematic diagram of the portal active frame, the Z-axis positioning seat and the lateral support plate of the present invention.

[0025] Figure 8 It is a schematic diagram of the door-type active frame, L-shaped push plate, vertical plate and lateral support plate of the present invention.

[0026] Fig. 9 It is a schematic diagram of the portal-type active frame, vertical plate and lateral support plate of the present invention.

[0027] Fig.10 It is an exploded schematic diagram of the Z-axis positioning seat, L-shaped push plate and cylindrical bayonet of the present invention.

[0028] In the figure: 1. feeding conveyor belt; 101. feeding frame; 2. detection chassis; 201. shooting chamber; 202. side perforation; 203. observation window; 3. transfer conveyor belt; 301. transfer frame; 4. camera; 5. auxiliary conveying roller; 6. bellows; 7. dust collector body; 8. adsorption hole plate; 9. driven rack; 10. steering wheel; 11. active rack; 12. transfer rod; 13. door-type active frame; 14. vertical plate; 15. lateral support plate; 16. rotating shaft; 17. spur gear; 18. fixed rack; 19. L-shaped push plate; 20. cylindrical bayonet; 21. driving groove; 22. Z-axis positioning seat; 23. dovetail guide strip; 24. pressure plate; 25. hydraulic cylinder; 26. closed door; 27. auxiliary light source. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 10The present invention provides a technical solution: a visual inspection device for metal surface treatment, which includes a loading rack 101, a detection chassis 2 and a unloading rack from left to right, a loading conveyor belt 1 is arranged on the loading rack 101, and a unloading conveyor belt is arranged on the unloading rack. The loading rack 101 and the unloading rack are fixedly connected to the horizontal sides of the detection chassis 2 by screws in turn, and the bottoms of the loading rack 101 and the unloading rack are sealed; such an arrangement ensures that the bottom of the detection chassis 2 remains free of any light source. A shooting chamber 201 is provided inside the detection chassis 2, a camera 4 is provided on the top of the shooting chamber 201, an auxiliary light source 27 is provided on the side wall of the shooting chamber 201, and a plurality of auxiliary conveying rollers 5 distributed in a linear array are provided below the shooting chamber 201, a group of vertical plates 14 are vertically provided between two adjacent auxiliary conveying rollers 5, and a portal-type active frame 13 is commonly connected to the bottom of the plurality of vertical plates 14, which is driven by a driving device and moves up and down in a straight line to lift the metal workpiece upward; a group of lateral support plates 15 are rotatably installed at both horizontal ends of the portal-type active frame 13, and the lateral support plates 15 are pushed by a pushing assembly to deflect up and down by 90° to perform horizontal side calibration and centering of the metal workpiece; shooting A group of Z-axis positioning seats 22 are installed on the front and rear sides of the cavity 201 in a limited sliding manner. The two groups of Z-axis positioning seats 22 are driven by a linkage component and move linearly toward each other, which are used to calibrate and center the front and rear sides of the metal workpiece. The linkage component is powered by a driving device; side through holes 202 for accommodating the loading conveyor belt 1 and the unloading conveyor belt are opened on the horizontal sides of the detection chassis 2, and a group of dust collector bodies 7 are installed on the upper end of each side through hole 202 in a limited sliding manner. One end of the dust collector body 7 is connected to the negative pressure component through a bellows 6, and the other end of the dust collector body 7 is detachably installed with an adsorption hole plate 8, and the dust collector body 7 is driven by a driven component to move up and down in a straight line, which is used to open or close the side through hole 202. The driven component is powered by a driving device.

[0031] Furthermore, the present invention forms an automatic detection module through the design of a loading conveyor belt 1, a loading frame 101, a transfer conveyor belt 3, a transfer frame 301, a camera 4, an auxiliary conveying roller 5, a dust collection body 7 and a lateral support plate 15. On the one hand, it can realize automatic loading, avoid manual intervention, and improve the overall efficiency of the production line; on the other hand, it can realize a closed detection space, thereby reducing the interference of external environmental factors such as light and human conditions on the detection results, and improving the accuracy and reliability of the detection.

[0032] like Figure 3 as well as Figure 6As shown, a rectangular movable chamber for accommodating the portal-type active frame 13 is provided inside the detection chassis 2, and the driving device includes a hydraulic cylinder 25, the end cover of the hydraulic cylinder 25 is fixedly arranged at the bottom of the rectangular movable chamber, the piston rod of the hydraulic cylinder 25 extends upward and is fixedly connected to the lower end surface of the portal-type active frame 13, and a group of linkage components are connected to the front and rear sides of the portal-type active frame 13.

[0033] Specifically, the control unit controls the hydraulic cylinder 25 to be opened, and the piston rod of the hydraulic cylinder 25 extends outward and pushes the portal-type active frame 13 to move up and down.

[0034] like Figure 7 as well as Fig.10 As shown, the linkage assembly includes an L-shaped push plate 19 and a cylindrical bayonet 20. One end of the L-shaped push plate 19 is fixedly connected to the gate-type active frame 13, and the other end of the L-shaped push plate 19 extends into the Z-axis positioning seat 22 and is fixedly connected to the cylindrical bayonet 20. The upper end of the Z-axis positioning seat 22 is symmetrically provided with a dovetail guide bar 23, and a slide groove matching the dovetail guide bar 23 is provided inside the detection chassis 2. A rectangular slot opening downward is provided inside the Z-axis positioning seat 22, and a driving slot 21 for accommodating the cylindrical bayonet 20 is provided on both horizontal sides of the rectangular slot, and the driving slot 21 is set as a V-shaped through slot.

[0035] Furthermore, the present invention can convert the up and down movement of the portal active frame 13 into the linear movement of the two sets of Z-axis positioning seats 22 by using the L-shaped push plate 19 and the cylindrical latch 20 in conjunction with the V-shaped structure, so that when the vertical plate 14 lifts the metal workpiece to be processed upward for photography, the Z-axis positioning seat 22 can drive the pressure plate 24 to quickly center the front and rear sides of the metal workpiece and quickly drive away, thereby ensuring the accuracy of the detection structure.

[0036] like Figure 6-Figure 9 As shown, the driven assembly includes a driven rack 9, a steering wheel 10, an active rack 11 and a transfer rod 12. The transfer rod 12 is slidably mounted in the detection chassis 2. One end of the transfer rod 12 is fixedly connected to the door-type active frame 13, and the other end of the transfer rod 12 is fixedly connected to the active rack 11. The steering wheel 10 is rotatably mounted on the detection chassis 2 and meshedly connected to the active rack 11. Both ends of the side wall of the vacuum cleaner body 7 are fixedly connected to a set of driven racks 9, and the driven racks 9 are meshedly connected to the steering wheel 10.

[0037] Furthermore, by using the driven rack 9, the steering wheel 10, the active rack 11 and the adapter rod 12 in cooperation, the linear up and down motion of the door-type active frame 13 can be converted into the reverse up and down motion of the two groups of vacuum cleaner bodies 7. When the adsorption hole plate 8 at the bottom of the vacuum cleaner body 7 moves up, it can allow the metal workpiece to be normally transported to the detection chassis 2, and at the same time, the dust on the surface of the metal workpiece can be adsorbed and cleaned, thereby improving the accuracy of the detection result; and when the vacuum cleaner body 7 moves down, it can cover the side perforations 202 together with the side support plate 15, so as to ensure the airtight performance of the detection environment.

[0038] like Figure 7-Figure 9 As shown, both horizontal ends of the portal-type active frame 13 are provided with pre-set grooves for accommodating the lateral support plates 15. One end of the lateral support plates 15 is mounted on the portal-type active frame 13 through a rotation shaft 16 for limited rotation. The bottom of the other end of the lateral support plates 15 is set as an arc surface that matches the conveyor belt. Both ends of the rotation shaft 16 extend out of the portal-type active frame 13 and are connected to a group of push components. The push components include a spur gear 17 and a fixed rack 18. The spur gear 17 is coaxially fixedly connected to the rotation shaft 16. The fixed rack 18 is fixedly set on the side wall of the pre-set groove. The portal-type active frame 13 is also provided with a torsion spring sleeved on the rotation shaft 16.

[0039] Furthermore, by using the spur gear 17, the fixed rack 18 and the torsion spring in cooperation, the up and down movement of the door-type active frame 13 can be converted into a 90° up and down flipping movement of the two sets of lateral support plates 15. On the one hand, the lateral support plates 15 can quickly center and release the horizontal sides of the metal workpiece when the vertical plate 14 lifts the metal workpiece to be processed upward for photography. On the other hand, they can also seal the side perforations 202 together with the vacuum cleaner body 7 in a flat state to ensure that the shooting environment is not disturbed by external light sources.

[0040] When the present invention is in use: first, the metal workpieces to be inspected are transported one by one to the inspection chassis 2 through the feeding conveyor belt 1. When the frontmost workpiece passes through the side perforation 202, the adsorption hole plate 8 at the bottom of the vacuum body 7 adsorbs and cleans the dust on the surface of the workpiece until the workpiece is completely driven by multiple auxiliary conveying rollers 5 and enters the inspection chassis 2. The hydraulic cylinder 25 is immediately turned on by the control unit. The piston rod of the hydraulic cylinder 25 extends outward and pushes the door-type active frame 13 to move upward. The multiple sets of vertical plates 14 on the door-type active frame 13 lift the workpiece upward, making it convenient for the camera 4 to take static photos of the workpiece. At the same time, the transfer rod 12, the lateral support plate 15 and the L-shaped push plate 19 also move upward with the door-type active frame 13. The upward transfer rod 12 acts on the active rack 11, so that the active rack 11 drives the driven rack 9 to move downward through the steering wheel 10, thereby making the vacuum cleaner The body 7 moves downward and blocks the side perforations 202; and the lateral support plate 15 is kept at a small angle during the upward movement, and then the spur gear 17 thereon is quickly rotated upward by 90° when it meshes with the fixed rack 18, so as to center and limit the workpiece on both sides horizontally. Finally, when the spur gear 17 is disconnected from the fixed rack 18, the lateral support plate 15 is quickly rotated downward by 90° and contacts the side wall of the shooting chamber 201, thereby cooperating with the vacuum cleaner body 7 to block the side perforations 202. At this time, the shooting chamber 201 is in a relatively closed environment; and the cylindrical bayonet 20 on the upward L-shaped push plate 19 acts on the driving groove 21 of the V-shaped structure, so that the Z-axis positioning seat 22 can drive the pressing plate 24 to quickly center and position the front and rear sides of the metal workpiece and quickly drive away when the vertical plate 14 lifts the metal workpiece to be processed upward for taking pictures, thereby ensuring the accuracy of the detection structure.

[0041] A visual inspection system for metal surface treatment, a visual inspection device for metal surface treatment, the system comprising the following modules: Image acquisition module: includes a camera 4, which uses a high-resolution camera 4 or an industrial camera 4 to capture images of the metal surface; and an auxiliary light source 27, such as an LED light, a laser, etc., to ensure that clear images can be obtained in different environments.

[0042] Image processing module: including image denoising, enhancement, standardization and other pre-processing to improve the accuracy of subsequent analysis; and extract the characteristics of metal surface defects by using algorithms such as edge detection and texture analysis.

[0043] Defect Detection Module: Apply machine learning or deep learning algorithms to identify and classify surface defects of metals such as scratches, pits, oxidation, etc., and evaluate the severity and type of defects based on set standards.

[0044] Data storage module: includes a database for storing test results and image data, and supports query and management of historical data.

[0045] User interface module: displays test results in real time, supports parameter adjustment and system control; and automatically generates test reports to facilitate recording and viewing historical data.

[0046] Control and communication module: includes a control unit for managing the collaborative work of various modules; and an interface for connecting with other systems or devices, such as a production line control system or a quality management system.

[0047] System calibration module: Regularly calibrate the system through calibration tools to ensure the accuracy and reliability of detection. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for metal surface treatment, comprising, from left to right, a loading rack (101), a detection chassis (2) and a unloading rack, characterized in that: The loading frame (101) is provided with a loading conveyor belt (1), the unloading frame is provided with a unloading conveyor belt, a shooting chamber (201) is provided inside the detection box (2), a camera (4) is provided at the top of the shooting chamber (201), an auxiliary light source (27) is provided on the side wall of the shooting chamber (201), a plurality of auxiliary conveying rollers (5) distributed in a linear array are provided below the shooting chamber (201), a group of vertical plates (14) are vertically provided between two adjacent auxiliary conveying rollers (5), the bottoms of the plurality of groups of vertical plates (14) are commonly connected to a gate-type active frame (13), the gate-type active frame (13) is driven by a driving device and moves up and down in a straight line, and is used to lift the metal workpiece upward; a group of lateral support plates (15) are rotatably installed at both horizontal ends of the gate-type active frame (13), the lateral support plates (15) are driven by a pushing assembly to move up and down by 90 degrees, and are used to perform horizontal side calibration and centering of the metal workpiece; A set of Z-axis positioning seats (22) are slidably mounted on both the front and rear sides of the shooting cavity (201), and the two sets of Z-axis positioning seats (22) are driven by a linkage assembly to move linearly towards each other, and are used to calibrate and center the front and rear sides of the metal workpiece, and the linkage assembly is powered by a driving device; The detection chassis (2) is provided with side through holes (202) on both horizontal sides for accommodating a loading conveyor belt (1) and a unloading conveyor belt. A group of dust collector bodies (7) are slidably mounted on the upper end of each side through hole (202). One end of the dust collector body (7) is connected to a negative pressure component via a bellows (6). An adsorption orifice plate (8) is detachably mounted on the other end of the dust collector body (7). The dust collector body (7) is driven by a driven component to move up and down in a straight line to open or close the side through hole (202). The driven component is powered by a driving device.

2. A visual inspection device for metal surface treatment according to claim 1, characterized in that: The detection chassis (2) has a rectangular movable chamber inside for accommodating the gate-type active frame (13). The driving device comprises a hydraulic cylinder (25). The end cover of the hydraulic cylinder (25) is fixedly arranged at the bottom of the rectangular movable chamber. The piston rod of the hydraulic cylinder (25) extends upward and is fixedly connected to the lower end surface of the gate-type active frame (13). The front and rear sides of the gate-type active frame (13) are both connected to a group of linkage components.

3. A visual inspection device for metal surface treatment according to claim 2, characterized in that: The linkage assembly comprises an L-shaped push plate (19) and a cylindrical bayonet (20); one end of the L-shaped push plate (19) is fixedly connected to the door-shaped active frame (13); the other end of the L-shaped push plate (19) extends into the Z-axis positioning seat (22) and is fixedly connected to the cylindrical bayonet (20).

4. A visual inspection device for metal surface treatment according to claim 3, characterized in that: The upper end of the Z-axis positioning seat (22) is symmetrically provided with a dovetail guide bar (23), the detection chassis (2) is provided with a slide groove matching the dovetail guide bar (23), the Z-axis positioning seat (22) is provided with a rectangular slot opening downward, and the horizontal sides of the rectangular slot are penetrated by a driving slot (21) for accommodating a cylindrical bayonet (20), and the driving slot (21) is provided as a V-shaped through slot.

5. The visual inspection device for metal surface treatment according to claim 1, characterized in that: The driven assembly comprises a driven rack (9), a steering wheel (10), an active rack (11) and a transfer rod (12); the transfer rod (12) is installed in a limited sliding manner in the detection chassis (2); one end of the transfer rod (12) is fixedly connected to the gate-type active frame (13), and the other end of the transfer rod (12) is fixedly connected to the active rack (11).

6. The visual inspection device for metal surface treatment according to claim 5, characterized in that: The steering wheel (10) is mounted on the detection chassis (2) for limited rotation and is meshedly connected to the driving rack (11); both ends of the side wall of the vacuum cleaner body (7) are fixedly connected to a set of driven racks (9); and the driven racks (9) are meshedly connected to the steering wheel (10).

7. The visual inspection device for metal surface treatment according to claim 2, characterized in that: Both horizontal ends of the portal-type active frame (13) are provided with pre-set grooves for accommodating lateral support plates (15); one end of the lateral support plate (15) is mounted on the portal-type active frame (13) for limited rotation via a rotating shaft (16); the bottom of the other end of the lateral support plate (15) is arranged as an arc-shaped surface that matches the conveyor belt.

8. The visual inspection device for metal surface treatment according to claim 7, characterized in that: Both ends of the rotating shaft (16) extend out of the gate-type active frame (13) and are connected to a set of pushing components, the pushing components comprising a spur gear (17) and a fixed rack (18), the spur gear (17) being coaxially fixedly connected to the rotating shaft (16), the fixed rack (18) being fixedly arranged on the side wall of the pre-set groove, and the gate-type active frame (13) is also provided with a torsion spring sleeved on the rotating shaft (16).

9. The visual inspection device for metal surface treatment according to claim 1, characterized in that: The loading rack (101) and the unloading rack are fixedly connected to the horizontal sides of the detection chassis (2) in sequence by means of screws, and the bottoms of the loading rack (101) and the unloading rack are both sealed.

10. A visual inspection system for metal surface treatment, used in the visual inspection device for metal surface treatment according to any one of claims 1 to 9, characterized in that: The system includes the following modules: Image acquisition module: used to capture high-resolution images of the treated metal surface; Image processing module: used to pre-process the collected images to improve detection accuracy; Defect Detection Module: used to apply machine learning or deep learning algorithms to identify and classify metal surface defects; Data storage module: used to store test results and image data, and support query and management of historical data; User interface module: used to display the test results in real time and support parameter adjustment and system control; Control and communication module: used to manage the collaborative work of each module and the connection with other systems or equipment; System calibration module: used to regularly calibrate the system to ensure the accuracy and reliability of detection.

Images