A visual intelligent detection device for appearance defects of copper bars

Abstract

This invention relates to a visual intelligent inspection device for copper rod appearance defects, comprising a frame on which a first conveyor belt assembly and a second conveyor belt assembly are staggered at different heights. Above the second conveyor belt assembly are a support assembly, a detection assembly, and a marking assembly. The support assembly receives and supports the copper rod input from the first conveyor belt assembly, and can also drive the copper rod to rotate for inspection by the detection assembly. The detection assembly inspects the two ends and circumferential outer wall of the copper rod on the support assembly. The marking assembly marks the detected defective areas of the copper rod. Through the staggered arrangement of the first and second conveyor belt assemblies, combined with a rotatable "V"-shaped support structure, the copper rod can be driven to rotate in place. Combined with visual inspection cameras arranged in multiple directions on the gantry frame, full-coverage, blind-angle-free inspection of the two ends and circumferential outer wall of the copper rod can be achieved.

Description

Technical Field

[0001] This invention relates to the field of copper rod appearance defect detection technology, specifically to a visual intelligent detection device for copper rod appearance defects. Background Technology

[0002] In the copper processing industry, copper rods, as a basic raw material, are widely used in electrical, mechanical, and construction fields. During production processes such as extrusion, drawing, and annealing, copper rods are prone to surface defects such as scratches, pits, oxide scale, and cracks. These defects not only affect the appearance of the product but may also reduce its conductivity, corrosion resistance, and mechanical strength, leading to quality problems in subsequent processed products.

[0003] Traditional copper bar appearance inspection mainly relies on manual visual inspection, which suffers from low efficiency, high missed detection rate, and high labor intensity. In recent years, with the development of machine vision technology and the continuous upgrading of image processing algorithms and deep learning models, machine vision-based copper bar appearance defect detection technology has gradually become a research hotspot. This technology mainly uses image processing algorithms and deep learning models to inspect the surface of copper bars. Industrial cameras are used to acquire images of the copper bar surface, and edge detection, texture analysis, and other algorithms are used to extract features. These features are then combined with a trained classification model to determine the presence of defects. This method can quickly detect common defects such as scratches, dents, and bubbles with high accuracy, effectively reducing the outflow of defective products.

[0004] However, existing copper bar visual inspection systems typically only issue alarms or perform simple classifications after detecting defects, failing to automatically pinpoint the exact location of the defects. Therefore, subsequent processing still requires significant manual intervention, such as manually re-inspecting the copper bar to locate the defect.

[0005] Therefore, there is an urgent need to design a visual intelligent detection device for copper rod appearance defects, so as to realize the rapid detection of copper rods and accurately mark the defective parts, thereby facilitating subsequent repair processing. Summary of the Invention

[0006] The technical solution is: a visual intelligent detection device for appearance defects of copper bars, including a frame, on which a first conveyor belt assembly and a second conveyor belt assembly are staggered at different heights. A defective part recycling area is set at the bottom of the first conveyor belt assembly. A support assembly, a detection assembly, and a marking assembly are set above the second conveyor belt assembly. The support assembly is used to receive and support the copper bars input from the first conveyor belt assembly, and the support assembly can also drive the copper bars to rotate so that the detection assembly can perform detection. The detection assembly is used to detect the two ends and the circumferential outer wall of the copper bars on the support assembly. The marking assembly is used to mark the defective parts of the detected copper bars.

[0007] Furthermore, the support assembly includes a support frame symmetrically rotatably mounted on the frame, two conveyor rollers rotatably mounted on the support frame, a conveyor belt sleeved on the two conveyor rollers, and a first cylinder mounted on the frame. The movable end of the piston rod of the first cylinder is connected to the back of the support frame. When the piston rod of the first cylinder extends, the lower ends of the two symmetrical support frames approach and abut against each other, forming a "V"-shaped support structure. When the conveyor belt on the "V"-shaped support structure moves in the opposite direction, the copper rod on the "V"-shaped support structure rotates under the drive of the conveyor belt.

[0008] Furthermore, the surface of the conveyor belt is equipped with a cushioning pad.

[0009] Furthermore, a support plate is provided on the support frame, and the support plate is located between the two conveyor rollers.

[0010] Furthermore, a gantry is installed on the frame, and electric slide rails are provided on both the longitudinal and transverse inner walls of the gantry. The detection components include a slider that is slidably set on the electric slide rail and a visual inspection camera installed on the slider.

[0011] Furthermore, a second cylinder is symmetrically installed at one end of the slider. The second cylinders are located on both sides of the gantry. The piston rod of the second cylinder slides through the slider and is connected to a U-shaped frame. An L-shaped plate is rotatably installed inside the U-shaped frame. A stamp-type marking component is installed on the L-shaped plate. P-shaped blocks are fixedly installed on both sides of the L-shaped plate. A torsion spring is installed between the P-shaped block and the inner wall of the U-shaped frame. L-shaped limiting blocks are installed on both sides of the slider. The inner walls of the P-shaped block and the L-shaped limiting block slide in cooperation.

[0012] Furthermore, symmetrical portal frames are slidably arranged on both sides of the frame with the first conveyor belt assembly as the center. The openings of the portal frames face the first conveyor belt assembly, and the ends of the portal frame openings are connected to first limiting plates. The first limiting plates have an inverted "V" shape. When the lower ends of the two symmetrical support frames approach each other to form a "V" shaped support structure, one side of the first limiting plate is above the first conveyor belt assembly, and the other side is above the support frame near the first conveyor belt assembly. Adjusting screws are rotatably connected to both sides of the top of the frame. The adjusting screws are threadedly connected to the portal frames. The two adjusting screws drive the two first limiting plates to approach each other to center and limit the copper rods on the first conveyor belt assembly and the "V" shaped support structure.

[0013] Furthermore, a hinge shaft is rotatably provided at the lower end of the first limiting plate, a second limiting plate is mounted on the hinge shaft, a rotary motor is mounted on the first limiting plate, and the output shaft of the rotary motor is connected to the hinge shaft.

[0014] Furthermore, limit rods are evenly spaced on the conveyor belts of the first and second conveyor belt assemblies.

[0015] Furthermore, it also includes a controller, which is electrically connected to the drive motors in the first and second conveyor belt assemblies, as well as the electric slide rail, the first cylinder, the second cylinder, the vision inspection camera, and the rotary motor.

[0016] The beneficial effects are as follows: 1. By using a first conveyor belt assembly and a second conveyor belt assembly that are staggered at different heights, and in conjunction with a rotatable “V” shaped support structure, the copper rod can be driven to rotate in place. Combined with the visual inspection cameras arranged in multiple directions on the gantry, the copper rod can be fully covered and inspected without blind spots at both ends and the outer wall of the circumference, avoiding omissions and inefficiencies in manual inspection.

[0017] 2. It adopts a rotatable and retractable L-shaped plate and a stamp-type marking component. With the precise control of the electric slide rail and the second cylinder, it can automatically move the marking component to the corresponding defect point at the end or circumference of the copper rod and make physical marking according to the defect location recorded by the vision inspection system. The marking is accurate and the mark is clear, which facilitates subsequent processing.

[0018] 3. This device has the advantages of simple structure and high degree of automation. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a partial three-dimensional structural diagram of the frame, the second conveyor belt assembly, and the support assembly of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the support component of the present invention.

[0022] Figure 4 For the present invention Figure 3 A three-dimensional sectional view.

[0023] Figure 5 This is a perspective sectional view of the support frame, conveying roller, and support plate of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the gantry frame and the components installed on the gantry frame according to the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the slider, visual inspection camera, second cylinder, U-shaped frame, L-shaped plate, stamp-type marking component, P-shaped block and L-shaped limiting block of the present invention.

[0026] Figure 8 For the present invention Figure 7 A schematic diagram of the three-dimensional structure from another perspective.

[0027] Figure 9This is a three-dimensional structural diagram of the frame, first conveyor belt assembly, second conveyor belt assembly, first limiting plate, portal frame, adjusting screw, and other components of the present invention.

[0028] Figure 10 For the present invention Figure 9 A partial three-dimensional structural diagram.

[0029] Component names and serial numbers in the diagram: 1. Frame, 2. First conveyor belt assembly, 3. Second conveyor belt assembly, 4. Defective parts recycling area, 5. Support assembly, 51. Support frame, 52. Buffer pad, 53. Conveyor belt, 54. Conveyor roller, 6. Support plate, 7. First cylinder, 8. Gantry frame, 9. Slider, 10. Vision inspection camera, 11. Second cylinder, 12. U-shaped frame, 13. Torsion spring, 14. L-shaped plate, 15. Stamped marking component, 16. P-shaped block, 17. L-shaped limit block, 18. Indonesian, 19. Limiting rod, 20. First limit plate, 21. Portal frame, 22. Adjusting screw, 23. Rotary motor, 24. Second limit plate, 25. Hinge shaft. Detailed Implementation

[0030] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Example: A visual intelligent detection device for appearance defects in copper rods, such as... Figure 1 As shown, the assembly includes a frame 1, a first conveyor belt assembly 2, and a second conveyor belt assembly 3. The first conveyor belt assembly 2 and the second conveyor belt assembly 3 are staggered at different heights on the top of the frame 1. A defective part recycling area 4 is provided at the bottom of the first conveyor belt assembly 2. The first conveyor belt assembly 2 includes at least two rotating rollers rotatably mounted on the frame 1, a conveyor belt sleeved on the rotating rollers for conveying copper rods, and a drive motor for driving the rotating rollers to rotate. The first conveyor belt assembly 2 and the second conveyor belt assembly 3 have the same structure. Limiting rods 19 are evenly spaced on the conveyor belts of the first conveyor belt assembly 2 and the second conveyor belt assembly 3. The limiting rods 19 are used to limit the copper rods on the conveyor belt to maintain the spacing and posture of the copper rods. A support assembly 5, a detection assembly, and a marking assembly are provided above the second conveyor belt assembly 3.

[0032] like Figures 2-5As shown, the support assembly 5 is used to receive and support the copper rod input from the first conveyor belt assembly 2. The support assembly 5 can also drive the copper rod to rotate so that the detection assembly can perform all-round detection. Specifically, the support assembly 5 includes a support frame 51 symmetrically rotatably mounted on the frame 1, two conveyor rollers 54 rotatably mounted on each support frame 51, a motor mounted on the support frame 51 for driving the conveyor rollers 54 to rotate, a conveyor belt 53 sleeved on the two conveyor rollers 54, and a first cylinder 7 mounted on the frame 1. The movable end of the piston rod of the first cylinder 7 is rotatably connected to the back of the support frame 51.

[0033] When the piston rod of the first cylinder 7 extends, the lower ends of the symmetrical support frames 51 on the left and right sides approach and abut against each other, forming a "V"-shaped support structure. The copper rod is stably placed within this "V"-shaped structure, and the "V"-shaped support structure can adapt to copper rods of different diameters. When the conveyor belts 53 on the "V"-shaped support structure move in opposite directions, such as the left conveyor belt 53 moving upward and the right conveyor belt 53 moving downward, the left conveyor belt 53 pulls upward on the surface of the copper rod in contact with it, while the right conveyor belt 53 pulls downward on the surface of the copper rod in contact with it, thereby causing the copper rod to rotate around its own axis under the drive of friction.

[0034] To reduce the damage to the conveyor belt 53 caused by the copper rod falling from the first conveyor belt assembly 2 onto the conveyor belt 53, a buffer pad 52 is provided on the surface of the conveyor belt 53. The buffer pad 52 is made of rubber or polyurethane. At the same time, a support plate 6 is provided on the support frame 51. The support plate 6 is located between the two conveyor rollers 54. The support plate 6 is used to provide additional support for the copper rod, thereby reducing the load on the conveyor belt 53 and extending its service life.

[0035] like Figures 6-8 As shown, a gantry frame 8 is mounted on the frame 1, and the detection component is mounted on the gantry frame 8. Specifically, electric slide rails are provided on both the longitudinal and transverse inner walls of the gantry frame 8. The detection component includes a slider 9 slidably mounted on the electric slide rail and a vision inspection camera 10 mounted on the slider 9. The detection component is used to inspect the two ends and the circumferential outer wall of the copper rod on the support component 5. The slider 9, which is slidably connected to the gantry frame 8, is driven by the electric slide rails on both sides of the longitudinal direction of the gantry frame 8 to move vertically up and down along the gantry frame 8, thereby adjusting the vision inspection camera 10 on both sides of the longitudinal direction of the gantry frame 8 to be aligned with the end of the copper rod, so as to realize the defect detection of the end of the copper rod. The horizontal movement of the slider 9, which is connected to the electric slide rail on the inner side of the top of the gantry frame 8, is driven by the electric slide rail on the inner side of the top of the gantry frame 8, so that the vision inspection camera 10 on the inner side of the top of the gantry frame 8 can perform defect detection at any position of the circumferential outer wall of the copper rod according to the shooting needs.

[0036] In use, the copper rod to be inspected is fed in by the first conveyor belt assembly 2 and rolls onto the "V"-shaped support structure formed by the support assembly 5. The visual inspection cameras 10 on both sides of the longitudinal direction of the gantry 8 scan and inspect the two ends of the copper rod, and the visual inspection camera 10 on the inner side of the transverse direction of the gantry 8 scans and inspects the outer circumferential wall of the copper rod. At the same time, by controlling the differential speed movement of the conveyor belts 53 on the left and right sides, the copper rod is rotated, thereby achieving full circumferential coverage inspection of the copper rod.

[0037] like Figure 1 as well as Figures 6-8As shown, a marking component is also provided on the slider 9, which is used to mark the defective parts of the detected copper rod. Specifically, a second cylinder 11 is symmetrically installed on one end of the slider 9, and a second cylinder 11 is symmetrically arranged at the top of the slider 9 on both sides of the longitudinal direction of the gantry frame 8. A second cylinder 11 is also symmetrically arranged at the left end of the slider 9 on the transverse inner side of the gantry frame 8. The second cylinders 11 are located on both sides of the gantry frame 8. The piston rod of the second cylinder 11 slides through the slider 9 and is connected to a U-shaped frame 12. An L-shaped plate 14 is rotatably arranged inside the U-shaped frame 12. A stamp-type marking component 15 is provided on the L-shaped plate 14. The stamp of the stamp-type marking component 15 is erasable, and the stamp-type marking component 15 is a rubber stamp with ink. It is worth noting that the outline of the stamping part of the stamp-type marking component 15 is adapted to the outline of the copper rod. P-shaped blocks 16 are fixedly installed on both sides of the L-shaped plate 14. The longitudinal section of the P-shaped block 16 is a "P" shaped structure. A torsion spring 13 is installed between the P-shaped block 16 and the U-shaped inner wall of the U-shaped frame 12. L-shaped limiting blocks 17 are installed on both sides of the slider 9. The P-shaped block 16 and the inner wall of the L-shaped limiting block 17 slide together. When the piston rod of the second cylinder 11 extends, it pushes the U-shaped frame 12 to move away from the second cylinder 11. The L-shaped plate 14 and the P-shaped block 16 move synchronously with the U-shaped frame 12. When the P-shaped block 16 moves away from the area of ​​the L-shaped limiting block 17, under the action of the torsion spring 13, the P-shaped block 16 rotates downward 90 degrees with its connection point with the U-shaped frame 12 as the center and its back against the end of the L-shaped limiting block 17. The L-shaped plate 14 rotates synchronously with the P-shaped block 16, so that the stamp-type marking component 15 is facing the end or circumferential outer wall of the copper rod. Then, by the movement of the slider 9 along the gantry 8, the position of the stamp-type marking component 15 is adjusted so that the stamp-type marking component 15 is facing the end or circumferential outer wall of the copper rod. As the piston rod of the second cylinder 11 continues to extend, until the stamp-type marking component 15 contacts the outer wall of the copper rod, the defective area of ​​the copper rod is marked. After marking, the piston rod of the second cylinder 11 retracts, and the piston rod of the second cylinder 11 pulls the U-shaped frame 12 towards the direction of the second cylinder 11. When the back of the P-shaped block 16 abuts against the end of the L-shaped limiting block 17, as the piston rod of the second cylinder 11 continues to retract, the P-shaped block 16 rotates 90 degrees upward with its connection with the U-shaped frame 12 as the center, and the back of the P-shaped block 16 slides along the inner wall of the L-shaped limiting block 17, thereby moving the stamp-type marking component 15 away from the copper rod and deforming the torsion spring 13.

[0038] like Figure 1 and Figure 9As shown, symmetrical portal frames 21 are slidably arranged on the left and right sides of the frame 1 with the first conveyor belt assembly 2 as the center. The opening of the portal frame 21 faces the first conveyor belt assembly 2, and the end of the opening of the portal frame 21 is connected to a first limiting plate 20. The first limiting plate 20 has an inverted "V" shape structure. When the lower ends of the two symmetrical support frames 51 approach each other to form a "V" shaped support structure, one side of the first limiting plate 20 is above the first conveyor belt assembly 2, and the other side is above the support frame 52 near the first conveyor belt assembly 2. Adjusting screws 22 are rotatably connected to both sides of the top of the frame 1. The adjusting screws 22 are threadedly connected to the portal frame 21. The two adjusting screws 22 drive the two first limiting plates 20 to approach each other to center and limit the copper rod on the first conveyor belt assembly 2 and the "V" shaped support structure.

[0039] like Figure 9 and Figure 10 As shown, a hinge shaft 25 is rotatably mounted on the lower end of the first limiting plate 20. A second limiting plate 24 is mounted on the hinge shaft 25. The rotation angle of the second limiting plate 24 through the hinge shaft 25 is 0-180 degrees. When a rotary motor 23 is mounted on the first limiting plate 20, the output shaft of the rotary motor 23 is connected to the hinge shaft 25. When the lower ends of the two symmetrical support brackets 51 approach each other and abut to form a "V"-shaped support structure, the second limiting plate 24 is located between the two symmetrical support brackets 51 (e.g., ...). Figure 9 (As shown). When the visual inspection camera 10 detects a defect at the end of the copper rod, in order to prevent the second limiting plate 24 from blocking the stamping marking component 15, the hinge shaft 25 is driven to rotate by the rotary motor 23, thereby causing the second limiting plate 24 to rotate outward by at least 90 degrees. This ensures that the stamping marking component 15 can smoothly approach the end of the copper rod, thereby marking the defect at the end of the copper rod.

[0040] Furthermore, the upper stop points on both longitudinal sides of the gantry 8 and one transverse end are provided with ink 18, which are used to replenish ink for the stamp-type marking component 15.

[0041] It also includes a controller, which is electrically connected to the drive motor, electric slide rail, first cylinder 7, second cylinder 11, visual inspection camera 10 and rotary motor 23 in the first conveyor belt assembly 2 and the second conveyor belt assembly 3, thereby realizing a fully automatic detection and marking process.

[0042] When the visual inspection camera 10 detects a defect, the controller records the defect's location information. The controller then controls the rotary motor 23 to operate, driving the hinge shaft 25 to rotate, thereby causing the second limiting plate 24 to rotate outward by at least 90 degrees. Next, the controller controls the piston rod of the second cylinder 11 to extend, pushing the U-shaped frame 12 towards the copper rod. When the P-shaped block 16 completely disengages from the area of ​​the L-shaped limiting block 17, under the action of the torsion spring 13, the P-shaped block 16 rotates downward by 90 degrees with its connection point with the U-shaped frame 12 as the center and its end against the L-shaped limiting block 17. The L-shaped plate 14 follows the P-shaped block 16. The components rotate synchronously, so that the stamp-type marking components 15 on both sides of the gantry frame 8 are aligned with the ends of the copper rod, and the stamp-type marking components 15 on the inner side of the top of the gantry frame 8 are aligned with the outer circumferential wall of the copper rod. Then, according to the specific location of the defect, the electric slide rail drives the slider 9 to move along the inner wall of the gantry frame 8, so that the stamp-type marking components 15 are aligned with the defective part of the copper rod. The piston rod of the second cylinder 11 continues to extend until the stamp-type marking components 15 contact the end surface or circumferential surface of the copper rod, thus completing the marking of the defective part of the copper rod. After marking is completed, the piston rod of the second cylinder 11 retracts, pulling the U-shaped frame 12 to move away from the copper rod. When the back of the P-shaped block 16 abuts against the end of the L-shaped limit block 17, as the piston rod of the second cylinder 11 continues to retract, the P-shaped block 16 is forced to rotate upward 90 degrees, causing the L-shaped plate 14 and the stamp-type marking components 15 to reset and retract, while the torsion spring 13 re-deforms and stores force.

[0043] After the copper rod completes the inspection, the piston rod of the first cylinder 7 retracts, thereby driving the support brackets 51 on both sides to rotate downward with their hinge points with the frame 1 as the center. The copper rod falls downward onto the second conveyor belt assembly 3. According to the inspection result of the visual inspection camera 10, the controller controls the drive motor in the second conveyor belt assembly 3 to rotate forward or reverse. This sends out the qualified copper rods through the second conveyor belt assembly 3, while the unqualified copper rods are transported through the second conveyor belt assembly 3 to the defective parts recycling area 4 for centralized processing.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A visual intelligent detection device for appearance defects in copper rods, characterized in that: The equipment includes a frame (1), on which a first conveyor belt assembly (2) and a second conveyor belt assembly (3) are staggered at different heights. A defective part recycling area (4) is provided at the bottom of the first conveyor belt assembly (2). A support assembly (5), a detection assembly, and a marking assembly are provided above the second conveyor belt assembly (3). The support assembly (5) is used to receive and support the copper rods input from the first conveyor belt assembly (2). The support assembly (5) can also drive the copper rods to rotate so that the detection assembly can perform detection. The detection assembly is used to detect the two ends and the circumferential outer wall of the copper rods on the support assembly (5). The marking assembly is used to mark the defective parts of the detected copper rods.

2. The visual intelligent detection device for appearance defects of copper rods according to claim 1, characterized in that: The support assembly (5) includes a support frame (51) symmetrically rotatably mounted on the frame (1), two conveyor rollers (54) rotatably mounted on the support frame (51), a conveyor belt (53) sleeved on the two conveyor rollers (54), and a first cylinder (7) mounted on the frame (1). The movable end of the piston rod of the first cylinder (7) is connected to the back of the support frame (51). When the piston rod of the first cylinder (7) extends, the lower ends of the two symmetrical support frames (51) approach each other and abut against each other, forming a "V" shaped support structure. When the conveyor belt (53) on the "V" shaped support structure moves in the opposite direction, the copper rod on the "V" shaped support structure rotates under the drive of the conveyor belt (53).

3. The visual intelligent detection device for appearance defects of copper rods according to claim 2, characterized in that: The surface of the conveyor belt (53) is provided with a buffer pad (52).

4. The intelligent visual detection device for appearance defects of copper rods according to claim 2, characterized in that: A support plate (6) is provided on the support frame (51), and the support plate (6) is located between the two conveying rollers (54).

5. The visual intelligent detection device for appearance defects of copper rods according to claim 1, characterized in that: A gantry (8) is installed on the frame (1). Electric slide rails are provided on both the longitudinal and transverse inner walls of the gantry (8). The detection components include a slider (9) that is slidably set on the electric slide rail and a visual inspection camera (10) installed on the slider (9).

6. The visual intelligent detection device for appearance defects of copper rods according to claim 5, characterized in that: A second cylinder (11) is symmetrically installed at one end of the slider (9). The second cylinder (11) is located on both sides of the gantry (8). The piston rod of the second cylinder (11) slides through the slider (9) and is connected to a U-shaped frame (12). An L-shaped plate (14) is rotatably installed inside the U-shaped frame (12). A stamp-type marking component (15) is installed on the L-shaped plate (14). P-shaped blocks (16) are fixedly installed on both sides of the L-shaped plate (14). A torsion spring (13) is installed between the P-shaped block (16) and the U-shaped inner wall of the U-shaped frame (12). L-shaped limiting blocks (17) are installed on both sides of the slider (9). The inner walls of the P-shaped block (16) and the L-shaped limiting block (17) slide together.

7. The visual intelligent detection device for appearance defects of copper rods according to claim 2, characterized in that: A portal frame (21) is symmetrically slidably arranged on both sides of the frame (1) with the first conveyor belt assembly (2) as the center. The opening of the portal frame (21) faces the first conveyor belt assembly (2), and the end of the opening of the portal frame (21) is connected to a first limiting plate (20). The first limiting plate (20) is an inverted "V" shaped structure. When the lower ends of the two symmetrical support frames (51) approach each other to form a "V" shaped support structure, one side of the first limiting plate (20) is above the first conveyor belt assembly (2), and the other side is above the support frame (52) near the first conveyor belt assembly (2). Adjusting screws (22) are rotatably connected to both sides of the top of the frame (1). The adjusting screws (23) are threadedly connected to the portal frame (21). The two adjusting screws (22) drive the two first limiting plates (20) to approach each other to center and limit the copper rod on the first conveyor belt assembly (2) and the "V" shaped support structure.

8. The visual intelligent detection device for appearance defects of copper rods according to claim 7, characterized in that: The lower end of the first limiting plate (20) is rotatably provided with a hinge shaft (25), a second limiting plate (24) is installed on the hinge shaft (25), a rotary motor (23) is installed on the first limiting plate (20), and the output shaft of the rotary motor (23) is connected to the hinge shaft (25).

9. The visual intelligent detection device for appearance defects of copper rods according to claim 1, characterized in that: Limiting rods (19) are evenly spaced on the conveyor belts of the first conveyor belt assembly (2) and the second conveyor belt assembly (3).

10. A visual intelligent detection device for appearance defects of copper rods according to claim 2, 6, or 8, characterized in that: It also includes a controller that is electrically connected to the drive motors in the first conveyor belt assembly (2) and the second conveyor belt assembly (3), as well as the electric slide rail, the first cylinder (7), the second cylinder (11), the vision inspection camera (10), and the rotary motor (23).

Images