Stainless steel plate surface defect detection device

Abstract

The utility model relates to the technical field of defect detection, in particular to a stainless steel plate surface defect detection device, and aims to solve the problems that in the prior art, the function of cleaning impurities left on the surface of stainless steel is not achieved, and the function of collecting the cleaned impurities is not achieved. According to the technical scheme, the device comprises a working table, and a groove is formed in the top of the working table; the number of the fixing legs is four, and the four fixing legs are all fixedly installed at the bottom of the workbench; the synchronous belt conveyor is rotationally mounted in the groove; the fixing frame is fixedly installed on the top of the workbench, and a mounting plate is fixedly installed on one side of the fixing frame, the stainless steel surface impurity removing device has the function of removing impurities left on the stainless steel surface and the function of collecting the removed impurities, and therefore the situation that the detection result is not accurate is avoided.

Description

Technical Field

[0001] This application relates to the field of defect detection technology, and in particular to a device for detecting surface defects in stainless steel plates. Background Technology

[0002] Stainless steel plate is a general term encompassing both stainless steel plate and acid-resistant steel plate. It has a smooth surface, high plasticity, toughness, and mechanical strength, and is resistant to corrosion from acidic and alkaline gases, solutions, and other media. It is an alloy steel that does not easily rust. During the rolling process, due to inconsistent internal chemical composition, uneven stress is generated on the surface after being subjected to the pressure of the rolling mill, resulting in surface flatness defects. To control the quality of finished steel plates, it is necessary to inspect their flatness. Defect detection typically refers to the detection of surface defects in items. Surface defect detection uses advanced machine vision inspection technology to detect defects such as spots, pits, scratches, color differences, and breaks on the workpiece surface.

[0003] Patent document CN219302299U discloses a stainless steel plate surface defect detection device, relating to the field of defect detection technology. This utility model discloses a stainless steel plate surface defect detection device, including a frame with a conveying mechanism inside, and a gantry frame fixedly installed on the top of the frame. This utility model uses a rotating rod to drive the conveyor wheel and conveyor belt to rotate, facilitating the lateral movement of the stainless steel plate. An industrial inspection camera then detects defects on the surface of the stainless steel plate. When a defect is detected, an alarm is triggered. After the top surface of the stainless steel plate is inspected, a second motor drives the rotating shaft to rotate 180 degrees, flipping the stainless steel plate to the left, allowing the bottom surface of the stainless steel plate to be inspected from below by the industrial inspection camera. This facilitates inspection of both the top and bottom surfaces of the stainless steel plate, saving manual flipping time and improving inspection efficiency.

[0004] Patent document CN219285094U discloses a stainless steel plate surface defect detection device, including a conveyor belt, rollers, and baffles. The conveyor belt has rollers inside and is movably connected to the conveyor belt. Baffles are provided on both sides of the rollers, and the rollers are connected to the baffles through a transmission rod. Before use, the steel plate is placed on the conveyor belt. Then, the transmission rod is driven by a motor to drive the rollers to roll the conveyor belt. This method effectively reduces the manual handling of steel plates and lightens the burden on workers. When the conveyor belt passes the detection device in the middle of the fixed frame, the ultrasonic radar working at the bottom of the detection device will reflect the sound waves output to the steel plate and input the sound waves into the computer to diagnose whether it is flat. The detected steel plate is then sent to the slide plate by the conveyor belt and slides down to the storage rack for storage, achieving automatic detection of the steel plate.

[0005] However, the aforementioned stainless steel plate surface defect detection device does not have the function of cleaning residual impurities on the stainless steel surface, nor does it have the function of collecting the cleaned impurities, which may lead to inaccurate detection results. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing detection devices, which lack the function of cleaning residual impurities on the stainless steel surface and collecting the cleaned impurities, thus leading to inaccurate detection results. Therefore, this invention proposes a stainless steel plate surface defect detection device.

[0007] The stainless steel plate surface defect detection device provided in this application adopts the following technical solution:

[0008] A device for detecting surface defects in stainless steel plates, comprising:

[0009] The workbench has a groove on its top.

[0010] The worktable has four fixed legs, all of which are fixedly installed on the bottom of the worktable.

[0011] A synchronous belt conveyor is rotatably mounted within the groove.

[0012] A fixed frame is fixedly installed on the top of the workbench, and a mounting plate is fixedly installed on one side of the fixed frame. A first drive motor is fixedly installed on the mounting plate, and a double-acting screw is rotatably installed on the inner walls of both sides of the fixed frame. The output shaft of the first drive motor is fixedly connected to the double-acting screw, and two first moving blocks are threadedly connected to the double-acting screw. Both first moving blocks are slidably installed on the top inner wall of the fixed frame, and a moving plate is fixedly installed on both first moving blocks.

[0013] The collection components are fixedly installed at the bottom of the workbench.

[0014] Furthermore, an ultrasonic radar and an infrared scanner are fixedly installed on one side of each of the two movable plates, and a cleaning brush is rotatably installed on the other side of each of the two movable plates. Multiple conveying rollers are rotatably installed on each of the two movable plates, and a first through hole is opened on one of the two movable plates. Both of the two movable plates are fixedly installed on a support frame.

[0015] Furthermore, a first drive shaft is rotatably mounted in the first through hole, and a first rectangular groove is provided at one end of the first drive shaft. A first drive rod is slidably mounted in the first rectangular groove, and a first bevel gear is fixedly mounted on one end of the first drive rod. The first bevel gear meshes with a second bevel gear, and the second bevel gear is fixedly mounted on one of the two cleaning brushes that is away from the first drive motor. The second bevel gear meshes with a third bevel gear, and a second drive shaft is fixedly mounted on the third bevel gear. The second drive shaft is rotatably mounted on one of the two support frames that is away from the first drive motor.

[0016] Furthermore, a second rectangular groove is provided on one end of the second drive shaft, and a second drive rod is slidably installed in the second rectangular groove. The second drive rod is rotatably installed on the other support frame closer to the first drive motor among the two support frames, and a fourth bevel gear is fixedly installed on one end of the second drive rod. The fourth bevel gear meshes with a fifth bevel gear, and the fifth bevel gear is fixedly installed on the other cleaning brush closer to the first drive motor among the two cleaning brushes. Collection pipes are fixedly installed on both sides of the fixed frame.

[0017] Furthermore, the collection assembly includes a collection box, which is fixedly installed on the bottom of the workbench. Flexible hoses are fixedly installed on both sides of the collection box, and one end of each hose is fixedly connected to a collection pipe. A second through hole is provided at the bottom of the collection box, and a rotating shaft is rotatably installed inside the second through hole. Multiple impellers are fixedly installed on the rotating shaft, and a filter plate is fixedly installed on the inner wall of the collection box. An installation box is fixedly installed at the bottom of the collection box, and a second drive motor is fixedly installed inside the installation box. The output shaft of the second drive motor is fixedly connected to the rotating shaft, and a support plate is fixedly installed on one side of the collection box.

[0018] Furthermore, a sixth bevel gear is fixedly installed on the output shaft of the second drive motor, and the sixth bevel gear meshes with a seventh bevel gear. A third transmission shaft is fixedly installed on the seventh bevel gear, and a protective box is fixedly installed on the inner wall of the collection box. A sliding groove is opened at the bottom of the protective box, and a reciprocating lead screw is rotatably installed in the sliding groove.

[0019] Furthermore, a second moving block is threadedly connected to the reciprocating screw, and a scraper is fixedly installed on the second moving block. A fourth transmission shaft is rotatably installed on one of the four fixed legs, and a worm is fixedly installed on one end of the fourth transmission shaft. The worm is rotatably installed on the support plate, and the worm meshes with a worm wheel, which is fixedly installed on the reciprocating screw.

[0020] Furthermore, a first sprocket is fixedly mounted on the third drive shaft, and the first sprocket meshes with a first chain. The first chain meshes with a second sprocket, and the second sprocket is fixedly mounted on the first drive shaft. A third sprocket is fixedly mounted on the third drive shaft, and the third sprocket meshes with a second chain. The second chain meshes with a fourth sprocket, and the fourth sprocket is fixedly mounted on the fourth drive shaft.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Two cleaning brushes can easily clean impurities adhering to the surface of stainless steel plates, thereby reducing the occurrence of impurity residue affecting the test quality and improving the test quality;

[0023] 2. The second drive motor can drive the rotating shaft to rotate, which in turn drives multiple impellers to rotate. The cleaned impurities are sucked into the collection box through two hoses and two collection pipes and fall onto the filter plate. At the same time, the reciprocating screw drives the second moving block to move back and forth, which in turn drives the scraper to move back and forth, which facilitates the treatment of impurities on the filter plate and prevents the filter plate from clogging. Attached Figure Description

[0024] Figure 1 This is a front view structural schematic diagram of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0025] Figure 2 This is a frontal cross-sectional view of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0026] Figure 3 This is a side view of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0027] Figure 4 This is a side cross-sectional view of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0028] Figure 5 This is a schematic diagram of the collection component structure of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0029] Figure 6 This is a cross-sectional view of the collection component of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0030] Figure 7 This is a schematic diagram of the reciprocating lead screw structure of a stainless steel plate surface defect detection device according to Embodiment 1 of this application;

[0031] Figure 8 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0032] Figure 9 yes Figure 4 Enlarged schematic diagram of part B in the middle;

[0033] Figure 10 yes Figure 6 An enlarged schematic diagram of section C.

[0034] Reference numerals: 1. Workbench; 2. Synchronous belt conveyor; 3. Fixed frame; 4. First drive motor; 5. Bidirectional lead screw; 6. First moving block; 7. Moving plate; 8. Ultrasonic radar; 9. Infrared scanner; 10. Cleaning brush; 11. First drive shaft; 12. First drive rod; 13. First bevel gear; 14. Second bevel gear; 15. Third bevel gear; 16. Second drive shaft; 17. Second drive rod; 18. Fourth bevel gear; 19. Fifth bevel gear; 20. Collection. 21. Pipe; 22. Collection box; 23. Hose; 24. Rotating shaft; 25. Filter plate; 26. Mounting box; 27. Second drive motor; 28. Sixth bevel gear; 29. ​​Seventh bevel gear; 30. Third drive shaft; 31. Protective box; 32. Reciprocating screw; 33. Second moving block; 34. Fourth drive shaft; 35. Worm gear; 36. First sprocket; 37. First chain; 38. Second sprocket; 39. Third sprocket; 40. Second chain; 41. Fourth sprocket. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Example 1

[0037] Reference Figures 1-10 A stainless steel plate surface defect detection device, comprising:

[0038] Workbench 1, with a groove on its top;

[0039] The worktable 1 has four fixed legs, all of which are fixedly installed on the bottom of the worktable 1.

[0040] Synchronous belt conveyor 2 is rotatably mounted in the groove;

[0041] A fixed frame 3 is fixedly installed on the top of the workbench 1, and a mounting plate is fixedly installed on one side of the fixed frame 3. A first drive motor 4 is fixedly installed on the mounting plate, and a double-acting screw 5 is rotatably installed on the inner walls of both sides of the fixed frame 3. The output shaft of the first drive motor 4 is fixedly connected to the double-acting screw 5, and two first moving blocks 6 are threadedly connected to the double-acting screw 5. Both first moving blocks 6 are slidably installed on the top inner wall of the fixed frame 3, and a moving plate 7 is fixedly installed on both first moving blocks 6.

[0042] The collection components are fixedly installed at the bottom of the workbench 1.

[0043] Specifically, an ultrasonic radar 8 and an infrared scanner 9 are fixedly installed on one side of each of the two movable plates 7, and a cleaning brush 10 is rotatably installed on the other side of each of the two movable plates 7. Multiple conveying rollers are rotatably installed on each of the two movable plates 7, and a first through hole is opened on one of the two movable plates 7. Both movable plates 7 are fixedly installed on a support frame.

[0044] Specifically, a first drive shaft 11 is rotatably installed in the first through hole, and a first rectangular groove is provided at one end of the first drive shaft 11. A first drive rod 12 is slidably installed in the first rectangular groove, and a first bevel gear 13 is fixedly installed on one end of the first drive rod 12. The first bevel gear 13 meshes with a second bevel gear 14, and the second bevel gear 14 is fixedly installed on one of the two cleaning brushes 10 that is away from the first drive motor 4. The second bevel gear 14 meshes with a third bevel gear 15, and a second drive shaft 16 is fixedly installed on the third bevel gear 15. The second drive shaft 16 is rotatably installed on one of the two support frames that is away from the first drive motor 4.

[0045] Specifically, a second rectangular groove is provided on one end of the second drive shaft 16, and a second drive rod 17 is slidably installed in the second rectangular groove. The second drive rod 17 is rotatably installed on the other support frame closer to the first drive motor 4 among the two support frames, and a fourth bevel gear 18 is fixedly installed on one end of the second drive rod 17. The fourth bevel gear 18 meshes with a fifth bevel gear 19, and the fifth bevel gear 19 is fixedly installed on the other cleaning brush 10 closer to the first drive motor 4 among the two cleaning brushes 10. Collection pipes 20 are fixedly installed on both sides of the fixing frame 3.

[0046] Specifically, the collection assembly includes a collection box 21, which is fixedly installed at the bottom of the workbench 1. Flexible hoses 22 are fixedly installed on both sides of the collection box 21, and one end of each flexible hose 22 is fixedly connected to a collection pipe 20. A second through hole is opened at the bottom of the collection box 21, and a rotating shaft 23 is rotatably installed in the second through hole. Multiple impellers are fixedly installed on the rotating shaft 23. A filter plate 24 is fixedly installed on the inner wall of the collection box 21. An installation box 25 is fixedly installed at the bottom of the collection box 21, and a second drive motor 26 is fixedly installed inside the installation box 25. The output shaft of the second drive motor 26 is fixedly connected to the rotating shaft 23. A support plate is fixedly installed on one side of the collection box 21.

[0047] Specifically, a sixth bevel gear 27 is fixedly installed on the output shaft of the second drive motor 26, and the sixth bevel gear 27 meshes with a seventh bevel gear 28. A third transmission shaft 29 is fixedly installed on the seventh bevel gear 28, and a protective box 30 is fixedly installed on the inner wall of the collection box 21. A sliding groove is opened at the bottom of the protective box 30, and a reciprocating screw 31 is rotatably installed in the sliding groove.

[0048] Specifically, a second moving block 32 is threaded onto the reciprocating screw 31, and a scraper is fixedly installed on the second moving block 32. A fourth drive shaft 33 is rotatably installed on one of the four fixed legs, and a worm 34 is fixedly installed on one end of the fourth drive shaft 33. The worm 34 is rotatably installed on the support plate, and the worm 34 meshes with a worm wheel 35, which is fixedly installed on the reciprocating screw 31.

[0049] Specifically, a first sprocket 36 is fixedly mounted on the third drive shaft 29, and the first sprocket 36 engages with a first chain 37. The first chain 37 engages with a second sprocket 38, and the second sprocket 38 is fixedly mounted on the first drive shaft 11. A third sprocket 39 is fixedly mounted on the third drive shaft 29, and the third sprocket 39 engages with a second chain 40. The second chain 40 engages with a fourth sprocket 41, and the fourth sprocket 41 is fixedly mounted on the fourth drive shaft 33.

[0050] The implementation principle of the stainless steel plate surface defect detection device in this embodiment is as follows: The stainless steel plate is placed vertically on the workbench 1. At this time, the synchronous belt conveyor 2 and the first drive motor 4 are started. The synchronous belt conveyor 2 transports the stainless steel plate. The first drive motor 4 drives the bidirectional lead screw 5 to rotate. The bidirectional lead screw 5 drives two first moving blocks 6 to move relative to each other. The two first moving blocks 6 simultaneously drive two moving plates 7 to move relative to each other. The two moving plates 7 simultaneously drive multiple conveying rollers to move relative to each other. The stainless steel plate is fixed by the multiple conveying rollers. At the same time, the two moving plates 7 simultaneously drive two cleaning brushes 10 to move relative to each other and contact the stainless steel plate. At this time, the second drive motor 26 is started. The second drive motor 26 drives the sixth bevel gear 27 to rotate. The sixth bevel gear... 27 drives the seventh bevel gear 28 to rotate, the seventh bevel gear 28 drives the third drive shaft 29 to rotate, the third drive shaft 29 drives the first sprocket 36 to rotate, the first sprocket 36 drives the second sprocket 38 to rotate via the first chain 37, the second sprocket 38 drives the first drive shaft 11 to rotate, the first drive shaft 11 drives the first drive rod 12 to rotate, the first drive rod 12 drives the first bevel gear 13 to rotate, the first bevel gear 13 drives the second bevel gear 14 to rotate, the second bevel gear 14 drives one of the two sweeping brushes 10 that is farthest from the first drive motor 4 to rotate, and at the same time the second bevel gear 14 drives the third bevel gear 15 to rotate, the third bevel gear 15 drives the second drive shaft 16 to rotate, the second drive shaft 16 drives the second drive rod 1 7. The second transmission rod 17 drives the fourth bevel gear 18 to rotate, the fourth bevel gear 18 drives the fifth bevel gear 19 to rotate, and the fifth bevel gear 19 drives the other cleaning brush 10 closest to the first drive motor 4 to rotate. The two cleaning brushes 10 facilitate the cleaning of impurities attached to the surface of the stainless steel plate, thereby reducing the possibility of impurity residue affecting the detection quality. At the same time, the second drive motor 26 drives the rotating shaft 23 to rotate, and the rotating shaft 23 drives multiple impellers to rotate. The cleaned impurities are sucked into the collection box 21 through the two hoses 22 and the two collection pipes 20 and fall onto the filter plate 24. At the same time, the ultrasonic radar 8 will reflect the sound waves output from the steel plate and input these sound waves into the computer for diagnosis. To check for unevenness, the infrared scanner 9 uses thermal imaging to examine minor imperfections in the steel plate. Simultaneously, the third drive shaft 29 drives the third sprocket 39 to rotate. The third sprocket 39, via the second chain 40, drives the fourth sprocket 41 to rotate. The fourth sprocket 41 drives the fourth drive shaft 33 to rotate. The fourth drive shaft 33 drives the worm gear 34 to rotate. The worm gear 34 drives the worm wheel 35 to rotate. The worm wheel 35 drives the reciprocating screw 31 to rotate, reducing the speed of the reciprocating screw 31. The reciprocating screw 31 then drives the second moving block 32 to move back and forth, which in turn drives the scraper to move back and forth, facilitating the removal of impurities from the filter plate 24 and preventing clogging of the filter plate 24.

[0051] Example 2

[0052] The difference between this embodiment and embodiment one is that: discharge ports are opened on both sides of the collection box 21, baffles are slidably installed on both discharge ports, push rod motors are fixedly installed on both sides of the collection box 21, and the output shafts of the two push rod motors are fixedly connected to the two baffles respectively. When the two push rod motors are started, the two push rod motors drive the two baffles to move, which facilitates opening or closing the two discharge ports and facilitates cleaning the impurities on the filter plate 24 out of the collection box 21.

[0053] Example 3

[0054] The difference between this embodiment and embodiment two is that: a collection box is fixedly installed on both sides of the collection box 21 at positions corresponding to the two discharge ports, which facilitates the collection of impurities that have been cleaned out of the collection box 21, making it easier for subsequent processing and avoiding pollution of the working environment.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting surface defects in stainless steel plates, characterized in that: include: Workbench (1), the top of workbench (1) has a groove; The workbench (1) is equipped with four fixed legs, and all four fixed legs are fixedly installed on the bottom of the workbench (1). A synchronous belt conveyor (2) is rotatably mounted in the groove; A fixed frame (3) is fixedly installed on the top of the workbench (1), and an mounting plate is fixedly installed on one side of the fixed frame (3). A first drive motor (4) is fixedly installed on the mounting plate, and a bidirectional lead screw (5) is rotatably installed on the inner walls of both sides of the fixed frame (3). The output shaft of the first drive motor (4) is fixedly connected to the bidirectional lead screw (5), and two first moving blocks (6) are threadedly connected to the bidirectional lead screw (5). Both first moving blocks (6) are slidably installed on the top inner wall of the fixed frame (3), and both first moving blocks (6) are fixedly installed with moving plates (7). The collection components are fixedly installed at the bottom of the workbench (1).

2. The stainless steel plate surface defect detection device according to claim 1, characterized in that: An ultrasonic radar (8) and an infrared scanner (9) are fixedly installed on one side of each of the two movable plates (7), and a cleaning brush (10) is rotatably installed on the other side of each of the two movable plates (7). Multiple conveying rollers are rotatably installed on each of the two movable plates (7), and a first through hole is opened on one of the two movable plates (7). Both of the movable plates (7) are fixedly installed on a support frame.

3. The stainless steel plate surface defect detection device according to claim 2, characterized in that: A first drive shaft (11) is rotatably installed in the first through hole, and a first rectangular groove is provided at one end of the first drive shaft (11). A first drive rod (12) is slidably installed in the first rectangular groove, and a first bevel gear (13) is fixedly installed on one end of the first drive rod (12). The first bevel gear (13) meshes with a second bevel gear (14), and the second bevel gear (14) is fixedly installed on one of the two cleaning brushes (10) that is away from the first drive motor (4). The second bevel gear (14) meshes with a third bevel gear (15), and a second drive shaft (16) is fixedly installed on the third bevel gear (15). The second drive shaft (16) is rotatably installed on one of the two support frames that is away from the first drive motor (4).

4. The stainless steel plate surface defect detection device according to claim 3, characterized in that: A second rectangular groove is provided on one end of the second drive shaft (16), and a second drive rod (17) is slidably installed in the second rectangular groove. The second drive rod (17) is rotatably installed on the other support frame of the two support frames, which is closer to the first drive motor (4). A fourth bevel gear (18) is fixedly installed on one end of the second drive rod (17). The fourth bevel gear (18) meshes with a fifth bevel gear (19), and the fifth bevel gear (19) is fixedly installed on the other cleaning brush (10) of the two cleaning brushes (10), which is closer to the first drive motor (4). Collection pipes (20) are fixedly installed on both sides of the fixed frame (3).

5. The stainless steel plate surface defect detection device according to claim 4, characterized in that: The collection assembly includes a collection box (21), which is fixedly installed at the bottom of the workbench (1). Flexible hoses (22) are fixedly installed on both sides of the collection box (21), and one end of each flexible hose (22) is fixedly connected to a collection pipe (20). A second through hole is opened at the bottom of the collection box (21), and a rotating shaft (23) is rotatably installed in the second through hole. Multiple impellers are fixedly installed on the rotating shaft (23), and a filter plate (24) is fixedly installed on the inner wall of the collection box (21). An installation box (25) is fixedly installed at the bottom of the collection box (21), and a second drive motor (26) is fixedly installed inside the installation box (25). The output shaft of the second drive motor (26) is fixedly connected to the rotating shaft (23), and a support plate is fixedly installed on one side of the collection box (21).

6. The stainless steel plate surface defect detection device according to claim 5, characterized in that: A sixth bevel gear (27) is fixedly installed on the output shaft of the second drive motor (26), and the sixth bevel gear (27) meshes with a seventh bevel gear (28). A third transmission shaft (29) is fixedly installed on the seventh bevel gear (28), and a protective box (30) is fixedly installed on the inner wall of the collection box (21). A sliding groove is provided at the bottom of the protective box (30), and a reciprocating screw (31) is rotatably installed in the sliding groove.

7. The stainless steel plate surface defect detection device according to claim 6, characterized in that: The reciprocating screw (31) is threaded with a second moving block (32), and a scraper is fixedly installed on the second moving block (32). A fourth transmission shaft (33) is rotatably installed on one of the four fixed legs, and a worm (34) is fixedly installed on one end of the fourth transmission shaft (33). The worm (34) is rotatably installed on the support plate, and the worm (34) meshes with a worm wheel (35). The worm wheel (35) is fixedly installed on the reciprocating screw (31).

8. The stainless steel plate surface defect detection device according to claim 7, characterized in that: A first sprocket (36) is fixedly mounted on the third drive shaft (29), and the first sprocket (36) meshes with a first chain (37). The first chain (37) meshes with a second sprocket (38), and the second sprocket (38) is fixedly mounted on the first drive shaft (11). A third sprocket (39) is fixedly mounted on the third drive shaft (29), and the third sprocket (39) meshes with a second chain (40). The second chain (40) meshes with a fourth sprocket (41), and the fourth sprocket (41) is fixedly mounted on the fourth drive shaft (33).

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