CN117890304A - Steel plate surface defect detection system - Google Patents
Steel plate surface defect detection system Download PDFInfo
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- CN117890304A CN117890304A CN202410299627.5A CN202410299627A CN117890304A CN 117890304 A CN117890304 A CN 117890304A CN 202410299627 A CN202410299627 A CN 202410299627A CN 117890304 A CN117890304 A CN 117890304A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 75
- 239000010959 steel Substances 0.000 title claims abstract description 75
- 238000001514 detection method Methods 0.000 title claims abstract description 50
- 230000007547 defect Effects 0.000 title claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000012937 correction Methods 0.000 claims abstract description 16
- 238000012216 screening Methods 0.000 claims abstract description 9
- 238000012549 training Methods 0.000 claims abstract description 9
- 238000002372 labelling Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000002950 deficient Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 3
- 238000011897 real-time detection Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000013072 incoming material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The invention relates to the technical field of oriented silicon steel plate surface defect detection, in particular to a steel plate surface defect detection system, which comprises a conveyor main body, a computer, a detection and adjustment assembly, a position correction assembly, a defect sample acquisition module, a sample screening module, a sample marking module, a sample set making module, a sample training module, a model building module, an environment configuration module, a network model module and a model test module, wherein the conveyor main body is connected with the conveyor main body through the network model module; the invention can automatically record and control the surface quality of the steel plate with high efficiency and high quality, reduce the labor intensity of personnel and improve the precision and efficiency of surface quality detection; adopt and detect adjusting part, let check out test set when detecting the steel sheet of different thickness, can carry out angle modulation with check out test set, make check out test set make a video recording the edge and aim at steel sheet edge, make monoblock steel sheet all be in the scope of making a video recording to all record the detail on steel sheet surface, thereby real-time detection has improved the defect detection effect of steel sheet.
Description
Technical Field
The invention relates to the technical field of surface defect detection of oriented silicon steel plates, in particular to a steel plate surface defect detection system.
Background
In the stretching process of the oriented silicon steel plate, the surface quality of the steel plate often has various surface defects due to uncertainty of the quality condition of the incoming material, the surface defects bring great trouble to quality control of finishing processing and packaging, and a detection system is required to detect because a powerful image data file cannot be provided for the packaged steel plate to record the quality condition of the steel plate and fine defect condition analysis and statistics cannot be carried out on the incoming material condition; however, the existing detection system can only rely on the naked eyes to judge and record, so that on one hand, the labor intensity is high, and on the other hand, the quality control cannot be accurately ensured and recorded; and detect the steel sheet of different thickness, can not adjust defect detection equipment, lead to the detection effect not good, reduced defect detection effect, the steel sheet when detecting moreover, lead to the steel sheet to need the manual work to place detection equipment's centre, place like this not accurate enough, reduced the effect of placing.
Disclosure of Invention
The invention solves the problem of providing a steel plate surface defect detection system which can automatically record and control the surface quality of a steel plate with high efficiency and high quality, reduce the labor intensity of personnel, improve the accuracy and efficiency of surface quality detection and improve the defect detection effect and the placement effect of the steel plate.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the steel plate surface defect detection system comprises a conveyor main body, a computer, a detection and adjustment assembly, a position correction assembly, a defect sample acquisition module, a sample screening module, a sample marking module, a sample set manufacturing module, a sample training module, a model building module, an environment configuration module, a network model module, a model test module, an image input module, a labeling information module and a test result output module, wherein the detection and adjustment assembly is fixed on the outer wall of the top end of the conveyor main body, the position correction assembly is fixed on the outer wall of one side of the top end of the conveyor main body, the computer is installed on the outer wall of one side of the conveyor main body, and the defect sample acquisition module, the sample screening module, the sample marking module, the sample set manufacturing module, the sample training module, the model building module, the environment configuration module, the network model module, the model test module, the image input module, the labeling information module and the test result output module are distributed and installed on the inner wall of one side of the computer.
Preferably, the detection adjusting part comprises a cylinder, a first lifting frame, a second linear array camera, a second bar-shaped light source, a rotating rod, a first gear, a supporting plate, a first motor, a screw rod, a second lifting frame, a threaded hole and a first rack, wherein the first lifting frame is installed on the outer wall of the top end of the conveyor main body, the cylinder is installed on the inner walls of the two sides of the conveyor main body in an embedded mode, the top end of the telescopic rod of the cylinder is fixedly connected to the outer wall of the first lifting frame, the second linear array camera is installed on the inner wall of one side of the first lifting frame, the second bar-shaped light source is installed on the inner wall of the other side of the first lifting frame, the rotating rod is fixedly connected to the rotating rod on the outer wall of the two sides of the second linear array camera, the other end of the rotating rod is connected to the inner wall of the first lifting frame in a rotating mode, the first gear is fixedly connected to the first gear is installed on the outer wall of the top end of the first lifting frame, the first lifting frame is installed on the outer wall of the side of the second lifting frame in a distributed mode, the first rack is meshed with the first support plate is installed on the outer wall of the side of the first lifting frame, the screw rod is installed on the outer wall of the first side of the first lifting frame, and the screw rod is fixedly connected to the screw rod is installed on the outer wall of the top of the first lifting frame.
Preferably, the position correcting assembly comprises a supporting frame, a sliding rail, a second motor, a second gear, a sliding plate, a correcting plate, a connecting plate and a second rack, wherein the supporting frame is welded on the outer wall of one side of the top end of the conveyor main body, the sliding rails are welded on the outer walls of two sides of the supporting frame, the sliding plate is connected to the outer wall of one side of the sliding rail in a sliding manner, the correcting plate is welded on the outer wall of the bottom end of the sliding plate, the connecting plate is welded on the outer wall of the top end of the sliding plate, the second rack is welded on the outer wall of one side of the top end of the connecting plate, the second gear is meshed on the outer wall of one side of the second rack, the second motor is embedded on the outer wall of the top end of the supporting frame, and the top end of an output shaft of the second motor is fixedly connected to the outer wall of the second gear.
Preferably, the inner walls of the two sides of the conveyor main body are distributed and rotationally connected with rotating rollers, and the outer wall of one side of each rotating roller is fixedly connected with an encoder.
Preferably, the first bar-shaped light source is installed on the bottom end outer wall of the conveyor main body, the first linear array camera is installed on the bottom end outer wall of the conveyor main body, the fixing rods are fixedly connected on the outer walls of the two sides of the first linear array camera and the first bar-shaped light source, and the other ends of the fixing rods are welded on the outer wall of the conveyor main body.
Preferably, the electrical output end of the computer is electrically connected with the electrical input end of the encoder.
Preferably, the electrical output end of the computer is electrically connected with the electrical input end of the first linear array camera, and the electrical output end of the computer is electrically connected with the electrical input end of the second linear array camera.
Preferably, the first motor is a stepper motor
Preferably, the second lifting frame is in an h shape.
Preferably, the second motor is a stepper motor.
The beneficial effects of the invention are as follows: the high-efficiency and high-quality recording and control can be automatically carried out on the surface quality of the steel plate, the labor intensity of personnel is reduced, and the accuracy and the efficiency of the surface quality detection are improved;
When the detection equipment is used for detecting the steel plates with different thicknesses, the detection equipment can be subjected to angle adjustment, so that the shooting edge of the detection equipment is aligned to the edge of the steel plate, and the whole steel plate is in the shooting range, thereby recording the details of the surface of the steel plate, detecting in real time and improving the defect detection effect of the steel plate;
Adopt the position correction subassembly, when the steel sheet detects, can carry out the position correction with the steel sheet, ensure that the steel sheet can accurately place check out test set's centre, can ensure like this that the steel sheet can handle the detection range completely in, make things convenient for the steel sheet to detect, improved the effect of placing of steel sheet.
Drawings
FIG. 1 is a perspective view of the whole structure of the present invention;
FIG. 2 is a perspective view of a detection and adjustment assembly according to the present invention;
FIG. 3 is a perspective view of a position correction assembly of the present invention;
FIG. 4 is a front cut-away block diagram of a computer according to the present invention;
fig. 5 is a flow chart of the system of the present invention.
Legend description:
1. A conveyor body; 2. a computer; 3. detecting an adjusting component; 4. a position correction component; 5. a rotating roller; 6. an encoder; 7. a fixed rod; 8. a first bar-shaped light source; 9. a first line camera; 10. a defect sample collection module; 11. a sample screening module; 12. a sample marking module; 13. a sample set making module; 14. a sample training module; 15. establishing a model module; 16. an environment configuration module; 17. a network model module; 18. a model test module; 19. an image input module; 20. the marking information module; 21. a test result output module; 301. a cylinder; 302. a first lifting frame; 303. a second line camera; 304. a second bar-shaped light source; 305. a rotating lever; 306. a first gear; 307. a support plate; 308. a first motor; 309. a screw rod; 3010. a second lifting frame; 3011. a threaded hole; 3012. a first rack; 401. a support frame; 402. a slide rail; 403. a second motor; 404. a second gear; 405. a slide plate; 406. a correction plate; 407. a connecting plate; 408. and a second rack.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 4-5, the steel plate surface defect detection system comprises a conveyor main body 1, a computer 2, a detection and adjustment assembly 3, a position correction assembly 4, a defect sample collection module 10, a sample screening module 11, a sample marking module 12, a sample set making module 13, a sample training module 14, a model building module 15, an environment configuration module 16, a network model module 17, a model test module 18, an image input module 19, a labeling information module 20 and a test result output module 21, wherein the detection and adjustment assembly 3 is fixed on the outer wall of the top end of the conveyor main body 1, the position correction assembly 4 is fixed on the outer wall of one side of the top end of the conveyor main body 1, the computer 2 is installed on the outer wall of one side of the conveyor main body 1, and the defect sample collection module 10, the sample screening module 11, the sample marking module 12, the sample set making module 13, the sample training module 14, the model building module 15, the environment configuration module 16, the network model module 17, the model test module 18, the image input module 19, the labeling information module 20 and the test result output module 21 are distributed and installed on the inner wall of one side of the computer 2; the electrical output end of the computer 2 is electrically connected with the electrical input end of the encoder 6, so that the computer 2 can record the rotating speed of the encoder 6, and the moving speed of the steel plate can be conveniently known; the electrical output end of the computer 2 is electrically connected with the electrical input end of the first bar-shaped light source 8, the electrical output end of the computer 2 is electrically connected with the electrical input end of the second linear array camera 303, and pictures photographed by the first linear array camera 9 and the second linear array camera 303 can be stored and arranged through the computer 2.
Working principle: when the defects of the steel plate are detected, a defect sample acquisition module 10 is started to acquire the defect samples, then a sample screening module 11 is used for determining which type of defects the samples are, a sample marking module 12 is used for marking the steel plate, thus the defect samples of all the steel plates are collected through a sample set making module 13, a model is built on the steel plate through a building model module 15, then the use environment of the steel plate is simulated through an environment configuration module 16, then the steel plate is simulated and trained through a sample training module 14, whether the defects in the steel plate affect the environment or not is observed, then a network model module 17 is used for carrying out process simulation on the process, then an image input module 19 is used for inputting the steel plates with different defects into a computer 2, then information recording is carried out on the steel plates with each defect through a marking information module 20, finally the steel plates with various defects are circularly detected for a plurality of times through a model test module 18, and then the result of the detection for a plurality of times is output through a test result output module 21.
Example two
Referring to fig. 1-2, the detection and adjustment assembly 3 includes an air cylinder 301, a first lifting frame 302, a second linear array camera 303, a second bar-shaped light source 304, a rotating rod 305, a first gear 306, a support plate 307, a first motor 308, a screw rod 309, a second lifting frame 3010, a threaded hole 3011 and a first rack 3012, wherein the outer wall of the top end of the conveyor body 1 is provided with the first lifting frame 302, the inner walls of the two sides of the conveyor body 1 are respectively embedded with the air cylinder 301, the top end of the telescopic rod of the air cylinder 301 is fixedly connected to the outer wall of the first lifting frame 302, the inner wall of one side of the first lifting frame 302 is provided with the second linear array camera 303, the inner wall of the other side of the first lifting frame 302 is provided with the second bar-shaped light source 304, the outer walls of the two sides of the second bar-shaped light source 304 and the second linear array camera 303 are respectively fixedly connected with the rotating rod 305, the other end of the rotating rod 305 is rotatably connected to the inner wall of the first lifting frame 302, a first gear 306 is fixedly connected to the outer wall of one side of the rotating rod 305, a second lifting frame 3010 is mounted on the outer wall of the top end of the first lifting frame 302, first racks 3012 are welded on the outer walls of two sides of the second lifting frame 3010 in a distributed manner, one side of each first rack 3012 is meshed with the outer wall of the corresponding first gear 306, a supporting plate 307 is welded on the outer wall of one side of the first lifting frame 302, a first motor 308 is mounted on the inner wall of one side of the supporting plate 307 in an embedded manner, a screw rod 309 is mounted on the outer wall of the top end of the supporting plate 307, the top end of an output shaft of the first motor 308 is fixedly connected to the outer wall of the screw rod 309, and a threaded hole 3011 is formed in the outer wall of the middle of the second lifting frame 3010 corresponding to the screw rod 309; the inner walls of the two sides of the conveyor main body 1 are distributed and rotationally connected with rotating rollers 5, the outer wall of one side of each rotating roller 5 is fixedly connected with an encoder 6, and in order to obtain better image quality, the first linear array camera 9 and the second linear array camera 303 are required to be combined with the encoder 6 arranged on the roller to give the advancing speed of the steel plate; a first strip-shaped light source 8 is arranged on the outer wall of the bottom end of the conveyor main body 1, a first linear array camera 9 is arranged on the outer wall of the bottom end of the conveyor main body 1, fixing rods 7 are fixedly connected to the outer walls of the two sides of the first linear array camera 9 and the first strip-shaped light source 8, the other ends of the fixing rods 7 are welded on the outer wall of the conveyor main body 1, the first strip-shaped light source 8 on the fixing rods 7 irradiates the lower surface of a steel plate, and then photographing treatment is carried out on the light source of the lower surface through the first linear array camera 9; the first motor 308 is a stepping motor, so that the screw rod 309 reciprocally rotates, and then the second lifting frame 3010 is lifted and adjusted under the action of the threaded hole 3011; the second lifting frame 3010 is in an i-shape, so that four first racks 3012 can be installed, and the second linear array camera 303 and the second strip-shaped light source 304 can be conveniently adjusted in angle.
When the conveyor body 1 is started to enable the rotating roller 5 to rotate, the steel plate is subjected to feeding treatment, the first bar-shaped light source 8 on the fixed rod 7 is started to irradiate the lower surface of the steel plate during feeding, then the light source of the lower surface is subjected to photographing treatment through the first linear array camera 9, then the second bar-shaped light source 304 is started to irradiate the upper surface of the steel plate, then the second linear array camera 303 is started to photograph the light source of the upper surface, when different steel plates are processed, if the thickness range is not large, the first motor 308 on the supporting plate 307 is started to enable the screw rod 309 to rotate, then the second lifting frame 3010 is driven to lift and adjust under the action of the threaded hole 3011, then the first gear 306 on the rotating rod 305 is driven by the first rack 3012, the second linear array camera 303 and the second bar-shaped light source 304 are subjected to rotate and adjust, so that the photographing angles of the light source irradiated by the second bar-shaped light source 304 are aligned to the upper surface of the steel plate, when the steel plate is too thick, the first lifting frame 302 is started to enable the first lifting frame 302 to lift, the second light source 304 to irradiate the light source to rotate, the first and the second bar-shaped light source to photograph the second bar-shaped light source 304 are aligned to the upper surface of the steel plate, the steel plate is enabled to enable the photographing angles to be aligned to be detected, the edges of the steel plate detection device to be detected, and the defect detection device is enabled to detect the steel plate edges to be aligned, and the detection angle detection is detected, and the defect detection device is detected.
Example III
Referring to fig. 1 and 3, the position correcting assembly 4 includes a supporting frame 401, a sliding rail 402, a second motor 403, a second gear 404, a sliding plate 405, a correcting plate 406, a connecting plate 407 and a second rack 408, the supporting frame 401 is welded on the outer wall of one side of the top end of the conveyor main body 1, the sliding rail 402 is welded on the outer walls of both sides of the supporting frame 401, the sliding plate 405 is slidingly connected on the outer wall of one side of the sliding rail 402, the correcting plate 406 is welded on the outer wall of the bottom end of the sliding plate 405, the connecting plate 407 is welded on the outer wall of one side of the top end of the connecting plate 407, the second rack 408 is meshed with the second gear 404 on the outer wall of one side of the second rack 408, the second motor 403 is embedded and installed on the outer wall of the top end of the supporting frame 401, and the top end of an output shaft of the second motor 403 is fixedly connected on the outer wall of the second gear 404; the second motor 403 is a stepping motor, so that the second gear 404 rotates, and then the sliding plates 405 on the connecting plate 407 approach each other along the sliding rail 402 under the action of the second rack 408.
Firstly, place the steel sheet on the live-action roller 5, start the second motor 403 on the braced frame 401 and make the second gear 404 rotate, then under the effect of second rack 408, make slide 405 on the connecting plate 407 carry out the mutual approaching along slide rail 402, make two correct board 406 and carry out position control to the steel sheet, make the steel sheet be located the centre of detecting structure, when the steel sheet detects, can carry out the position correction with the steel sheet, ensure that the steel sheet can accurately place the centre of check out test set, can ensure like this that the steel sheet can handle the detection range completely in, make things convenient for the steel sheet to detect, the effect of placing of steel sheet has been improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. Steel sheet surface defect detecting system, its characterized in that, including conveyer main part (1), computer (2), detect adjusting part (3), position correction subassembly (4), defect sample collection module (10), sample screening module (11), sample marking module (12), sample collection preparation module (13), sample training module (14), build model module (15), environment configuration module (16), network model module (17), model test module (18), image input module (19), mark information module (20) and test result output module (21), be fixed with on the top outer wall of conveyer main part (1) and detect adjusting part (3), be fixed with position correction subassembly (4) on the top one side outer wall of conveyer main part (1), install computer (2) on the one side outer wall of conveyer main part (1), defective sample collection module (10), sample screening module (11), sample marking module (12), sample collection preparation module (13), training module (14), build model module (15), environment configuration module (16), network configuration module (17), network model module (18), image input module (19) image test module (19) are installed on the one side inner wall of computer (2) A labeling information module (20) and a test result output module (21).
2. The steel plate surface defect detection system according to claim 1, wherein the detection and adjustment assembly (3) comprises a cylinder (301), a first lifting frame (302), a second linear array camera (303), a second bar-shaped light source (304), a rotating rod (305), a first gear (306), a supporting plate (307), a first motor (308), a screw rod (309), a second lifting frame (3010), a threaded hole (3011) and a first rack (3012), wherein a first lifting frame (302) is installed on the outer wall of the top end of the conveyor body (1), the cylinder (301) is installed on the inner walls of the two sides of the conveyor body (1), the top end of the telescopic rod of the cylinder (301) is fixedly connected to the outer wall of the first lifting frame (302), the second linear array camera (303) is installed on the inner wall of one side of the first lifting frame (302), the second bar-shaped light source (304) is installed on the inner wall of the other side of the first lifting frame (302), the second bar-shaped light source (304) and the outer wall of the second linear array camera (303) are fixedly connected with the rotating rod (305), the other end of the telescopic rod of the cylinder (301) is fixedly connected to the outer wall of the first lifting frame (305), install second lifting frame (3010) on the top outer wall of first lifting frame (302), it has first rack (3012) to distribute the welding on the both sides outer wall of second lifting frame (3010), and one side meshing of first rack (3012) is installed on the outer wall of first gear (306), it has backup pad (307) to weld on the outer wall of one side of first lifting frame (302), inlay on the inner wall of one side of backup pad (307) and install first motor (308), install lead screw (309) on the top outer wall of backup pad (307), and the output shaft top rigid coupling of first motor (308) is on the outer wall of lead screw (309), screw hole (3011) have been seted up corresponding lead screw (309) on the middle part outer wall of second lifting frame (3010).
3. The steel plate surface defect detection system according to claim 1, wherein the position correction component (4) comprises a supporting frame (401), a sliding rail (402), a second motor (403), a second gear (404), a sliding plate (405), a correction plate (406), a connecting plate (407) and a second rack (408), the supporting frame (401) is welded on the top end side outer wall of the conveyor main body (1), the sliding rail (402) is welded on both side outer walls of the supporting frame (401), the sliding plate (405) is slidingly connected on one side outer wall of the sliding rail (402), the correction plate (406) is welded on the bottom end outer wall of the sliding plate (405), the connecting plate (407) is welded on the top end outer wall of the sliding plate (405), the second rack (408) is welded on the top end side outer wall of the connecting plate (407), the second gear (404) is installed on one side outer wall of the second rack (408) in a meshed mode, the second motor (403) is embedded on the top end outer wall of the supporting frame (401), and the output shaft of the second motor (403) is fixedly connected on the outer wall of the second gear (404).
4. The steel plate surface defect detection system according to claim 1, wherein rotating rollers (5) are rotatably connected to inner walls of two sides of the conveyor main body (1), and an encoder (6) is fixedly connected to an outer wall of one side of each rotating roller (5).
5. The steel plate surface defect detection system according to claim 1, wherein a first bar-shaped light source (8) is installed on the outer wall of the bottom end of the conveyor main body (1), a first linear array camera (9) is installed on the outer wall of the bottom end of the conveyor main body (1), fixing rods (7) are fixedly connected on the outer walls of both sides of the first linear array camera (9) and the first bar-shaped light source (8), and the other ends of the fixing rods (7) are welded on the outer wall of the conveyor main body (1).
6. The steel plate surface defect detection system according to claim 4, wherein the electrical output of the computer (2) is electrically connected to the electrical input of the encoder (6).
7. The steel plate surface defect detection system according to claim 5, wherein the electrical output end of the computer (2) is electrically connected to the electrical input end of the first line camera (9), and the electrical output end of the computer (2) is electrically connected to the electrical input end of the second line camera (303).
8. The steel plate surface defect detection system of claim 2, wherein the first motor (308) is a stepper motor.
9. The steel plate surface defect detection system according to claim 2, wherein the second lifting frame (3010) is in an i-shape.
10. A steel plate surface defect detection system according to claim 3, characterized in that the second motor (403) is a stepper motor.
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