A blanking device for corrosion-resistant steel calendering

Abstract

The application discloses a kind of corrosion-resistant steel calendering processing blanking device, belong to calendering processing equipment technical field, including blanking shell, blanking shell inside is provided with blanking conveying mechanism, cleaning mechanism, on-line detection mechanism, blanking sorting mechanism and control system;On-line detection mechanism includes first surface detection component, second surface detection component, size detection component and thickness detection component, the structure of first surface detection component and second surface detection component is same, is provided with CCD image sensor and bar diffuse reflection light source, size detection component includes laser speed meter and laser width gauge, laser width gauge is respectively installed in laser speed meter two sides.The corrosion-resistant steel calendering processing blanking device of the application is used above, and it is matched with CCD image acquisition and laser non-contact detection, and the accuracy of defect identification and size measurement is significantly improved, and the surface of corrosion-resistant steel plate is not scratched, to ensure that product appearance and corrosion resistance performance integrity.

Description

Technical Field

[0001] This invention relates to the field of rolling processing equipment technology, and in particular to a feeding device for rolling corrosion-resistant steel. Background Technology

[0002] After being rolled, corrosion-resistant steel requires cutting, surface inspection, dimensional accuracy testing, and sorting of good and defective products. Existing traditional cutting devices mostly rely on manual sampling or single-item inspection, unable to simultaneously perform integrated online inspection of surface defects, thickness, width, and length. This results in low inspection efficiency and high manual labor intensity. Furthermore, inspection and sorting are independent, lacking a control system linkage. After inspection, manual sorting is essential, leading to low sorting efficiency, significant human error, and a high risk of mixing good and defective products. Summary of the Invention

[0003] The purpose of this invention is to provide a blanking device for the rolling of corrosion-resistant steel, which integrates conveying, cleaning, multi-dimensional online detection, and automatic sorting, significantly reducing the footprint and number of workstations in the blanking process; the pre-cleaning removes impurities and interference, and combined with CCD image acquisition and laser non-contact detection, it simultaneously completes the detection of all parameters of surface defects, thickness, width, and length, significantly improving the accuracy of defect identification and size measurement, without scratching the surface of the corrosion-resistant steel plate, and ensuring the integrity of the product's appearance and corrosion resistance.

[0004] To achieve the above objectives, the present invention provides a feeding device for corrosion-resistant steel rolling, comprising a feeding shell, wherein a feeding conveying mechanism, a cleaning mechanism, an online detection mechanism, a feeding sorting mechanism, and a control system are arranged inside the feeding shell; the online detection mechanism includes a first surface detection component, a second surface detection component, a size detection component, and a thickness detection component, wherein the first surface detection component and the second surface detection component have the same structure and are both provided with a CCD image sensor and a strip diffuse reflection light source; the size detection component includes a laser velocimeter and a laser width gauge, wherein the laser width gauge is respectively installed on both sides of the laser velocimeter.

[0005] Preferably, the feeding and conveying mechanism includes a drive motor, which is connected to the input end of a reduction mechanism. The output end of the reduction mechanism is connected to a drive shaft. The drive shaft is connected to a first driven shaft via gear transmission. The drive shaft and the first driven shaft are mounted on a frame. Both the drive shaft and the first driven shaft are connected to the frame via bearings. The first driven shaft is connected to a second driven shaft and a third driven shaft via chain transmission. A first guide roller is provided on one side of the second and third driven shafts along the conveying direction. A second guide roller is correspondingly provided above the second driven shaft, the third driven shaft, and the first guide roller. The second guide rollers are symmetrically arranged with the second driven shaft, the third driven shaft, and the first guide roller.

[0006] Preferably, the cleaning mechanism includes two cleaning rollers connected by gear transmission. The two cleaning rollers are symmetrically mounted on the frame, and both cleaning rollers are connected to the frame by bearings. The lower cleaning roller is connected to the first driven shaft by gear transmission.

[0007] Preferably, the thickness detection component is mounted on the frame between the cleaning roller and the second driven shaft, the first surface detection component and the second surface detection component are arranged symmetrically above and below, and the thickness detection component, the first surface detection component, the second surface detection component and the size detection component are arranged along the conveying direction.

[0008] Preferably, the end of the feeding conveyor is connected to the hinged end of the sorting mechanism, the movable end of the sorting mechanism is connected to the transport vehicle, the transport vehicle includes a good product bin and a defective product bin, the sorting mechanism includes a first support frame, the top of the first support frame is hinged to a second support frame, the second support frame is evenly distributed with third guide rollers, the bottom two sides of the second support frame are hinged to one end of the first connecting rod, the other end of the two first connecting rods is hinged to the slider, the two sliders are slidably connected to the first support frame, the two sliders are connected to each other through the second connecting rod, and the middle of the second connecting rod is connected to the piston rod of the hydraulic cylinder.

[0009] Preferably, the control system includes a data acquisition module, a data processing module, an execution drive module, and a communication module. The data processing module includes an image recognition algorithm unit, a size and thickness calculation unit, a defect determination unit, and a sorting action control unit. The data acquisition module is used to collect images of the upper and lower surfaces of the corrosion-resistant steel plate, running speed, plate width, and plate thickness in real time, and transmit them to the data processing module. The image recognition algorithm unit is used to preprocess, extract features, and compare defects on the upper and lower surface images of the acquired corrosion-resistant steel plate to determine whether there are defects on the surface of the corrosion-resistant steel plate. The dimension and thickness calculation unit is used to integrate the collected data on the running speed, width, and thickness of the corrosion-resistant steel plate, and to calculate the actual length, width, and thickness of the corrosion-resistant steel plate. The defect determination unit is used to compare the measured surface defects, length, width and thickness of the corrosion-resistant steel plate with the standard process threshold to determine whether the corrosion-resistant steel plate is a good product or a defective product. The sorting action control unit is used to control the extension and retraction stroke of the hydraulic cylinder and adjust the tilt angle of the second support frame according to the judgment result of the corrosion-resistant steel plate, so as to realize the separate unloading of good and defective products. The execution drive module is used to receive main control commands to control and execute the actions of conveying corrosion-resistant steel plates, surface cleaning, and angle adjustment of the sorting mechanism; The communication module is used for data transmission, enabling human-computer interaction, real-time data display, and detection data storage.

[0010] Preferably, the image recognition algorithm unit performs image defect grayscale threshold segmentation on the acquired image data and calculates the defect area ratio, wherein the image defect grayscale threshold segmentation formula is as follows: ; in, For pixel region attributes, coordinates The pixel grayscale value at that location, The preset defect grayscale judgment threshold is used; The formula for the percentage of defect area is as follows: ; in, This represents the percentage of surface defect area. This represents the total area of ​​the defects. This refers to the effective area of ​​the steel plate being inspected.

[0011] Preferably, the calculation formula for calculating the measured length of the corrosion-resistant steel plate in the dimension thickness calculation unit is as follows: ; in, The actual measured length of the corrosion-resistant steel plate. The measured average constant transmission speed is obtained using a laser velocimeter. The total time it takes for the corrosion-resistant steel plate to pass through the inspection station from start to finish. , The moment when the tail of the corrosion-resistant steel plate leaves the end of the test. The moment when the head of the corrosion-resistant steel plate enters the detection starting point; The formula for calculating the measured width of corrosion-resistant steel plates is shown below: ; in, The actual measured width of the corrosion-resistant steel plate. The distance between the reference centers of the two laser width measuring instruments. This is the distance from the left-side width gauge to the left edge of the corrosion-resistant steel plate. This is the distance from the right-side width measuring instrument to the right edge of the corrosion-resistant steel plate.

[0012] Preferably, the logical determination formula of the defect determination unit is as follows: ; in, The minimum allowable thickness for corrosion-resistant steel plates, The maximum allowable thickness of corrosion-resistant steel plate. To set the maximum allowable defect percentage threshold, Minimum allowable width for corrosion-resistant steel plates Maximum allowable width of corrosion-resistant steel plate Minimum allowable length for corrosion-resistant steel plates This refers to the maximum allowable length of corrosion-resistant steel plates.

[0013] Therefore, the present invention adopts the above-mentioned blanking device for corrosion-resistant steel rolling processing, which integrates conveying, cleaning, multi-dimensional online detection and automatic sorting, greatly reducing the footprint and number of workstations in the blanking process; the pre-cleaning removes impurities and interference, and with CCD image acquisition and laser non-contact detection, it simultaneously completes the detection of all parameters of surface defects, thickness, width and length, significantly improving the accuracy of defect identification and size measurement, without scratching the surface of corrosion-resistant steel plate, and ensuring the integrity of product appearance and corrosion resistance performance.

[0014] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a material feeding device for the rolling of corrosion-resistant steel according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the feeding shell of the feeding device for corrosion-resistant steel rolling processing according to the present invention; Figure 3 This is a three-dimensional structural diagram of the sorting mechanism of the material feeding device for corrosion-resistant steel rolling processing according to the present invention.

[0016] Figure Labels 1. Feeding housing; 2. Control system; 3. Drive motor; 4. Active drive shaft; 5. First driven drive shaft; 6. Second driven drive shaft; 7. Third driven drive shaft; 8. First guide roller; 9. Second guide roller; 10. Cleaning roller; 11. Thickness detection component; 12. First surface detection component; 13. Second surface detection component; 14. Dimension detection component; 15. First support frame; 16. Second support frame; 17. Third guide roller; 18. First connecting rod; 19. Second connecting rod; 20. Hydraulic cylinder. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Example 1 like Figures 1 to 3 As shown, this invention provides a feeding device for corrosion-resistant steel rolling processing, including a feeding housing 1. The feeding housing 1 houses a feeding conveying mechanism, a cleaning mechanism, an online detection mechanism, a feeding sorting mechanism, and a control system 2. The feeding housing 1 is an integrally enclosed frame housing, providing installation references and positioning support for the feeding conveying mechanism, cleaning mechanism, online detection mechanism, feeding sorting mechanism, and control system 2; it isolates external dust and light from interference with CCD images and laser detection, protects internal detection components and transmission structures, and improves equipment operational stability and detection reliability.

[0020] The material conveying mechanism includes a drive motor 3, which provides stable and uniform conveying power for the corrosion-resistant steel plate. The drive motor 3 is connected to the input end of the reduction mechanism, and the output end of the reduction mechanism is connected to the active drive shaft 4. The active drive shaft 4 is connected to the first driven drive shaft 5 via gear transmission. The active drive shaft 4 and the first driven drive shaft 5 are mounted on the frame, and both are connected to the frame via bearings. The first driven drive shaft 5 is connected to the second driven drive shaft 6 and the third driven drive shaft 7 via chain transmission. The second driven drive shaft 6 and the third driven drive shaft 7 are provided with a first guide roller 8 on one side along the conveying direction. A second guide roller 9 is correspondingly provided above the second driven drive shaft 6, the third driven drive shaft 7, and the first guide roller 8. The second guide roller 9 is symmetrically arranged with the second driven drive shaft 6, the third driven drive shaft 7, and the first guide roller 8. The use of a reduction mechanism, gear transmission and chain transmission ensures stable rotation speed and constant speed of corrosion-resistant steel plate. The first guide roller 8 and the second guide roller 9 are set to clamp and limit the steel plate to prevent the conveyor from running off-center, warping, or slipping, which would cause deviation in laser width measurement and image detection, and achieve uniform conveying rhythm of the whole line.

[0021] The cleaning mechanism includes two cleaning rollers 10 connected by gear transmission. The two cleaning rollers 10 are symmetrically mounted on the frame, and both are connected to the frame via bearings. The lower cleaning roller 10 is connected to the first driven shaft 5 via gear transmission. Before the corrosion-resistant steel plate enters the inspection station, the two cleaning rollers 10 perform roller brush cleaning on the upper and lower surfaces of the steel plate, removing surface oxide scale, dust, metal debris, and impurities. This prevents dust from obstructing the CCD and causing misjudgments of surface defects or drift in thickness detection values. The mechanical mechanism and the material conveying mechanism use mechanical transmission to achieve timing matching between conveying and cleaning, eliminating the need for an additional drive motor 3, resulting in a simplified structure and low energy consumption.

[0022] The online inspection mechanism includes a first surface inspection component 12, a second surface inspection component 13, a size inspection component 14, and a thickness inspection component 11. The first surface inspection component 12 and the second surface inspection component 13 have identical structures, enabling full-width online visual inspection of the upper and lower surfaces of the steel plate. Both the first surface inspection component 12 and the second surface inspection component 13 are equipped with a CCD image sensor and a strip diffuse reflection light source. The CCD image sensor is used to acquire full-area images of the upper and lower surfaces of the corrosion-resistant steel plate, while the strip diffuse reflection light source provides uniform illumination, eliminating shadows and reflection interference, improving image recognition accuracy, and accurately capturing even minute surface defects. The size inspection component 14 includes a laser velocimeter and a laser width gauge, with the laser width gauges installed on both sides of the laser velocimeter. The laser velocimeter acquires the instantaneous speed of the steel plate in real time, providing speed parameters for length integration calculation; the laser width gauges on both sides scan the edges of the steel plate in real time to detect the actual plate width dimension. This method avoids mechanical contact and scratches the corrosion-resistant steel plate, and can simultaneously complete speed and width measurements, and can also calculate the actual length of the steel plate, achieving integrated detection of width and length dimensions.

[0023] Thickness detection component 11 is mounted on the frame between cleaning roller 10 and the second driven shaft 6. First surface detection component 12 and second surface detection component 13 are symmetrically arranged vertically. Thickness detection component 11, first surface detection component 12, second surface detection component 13, and dimension detection component 14 are arranged along the conveying direction. Thickness detection component 11 performs non-contact, real-time detection of the overall thickness of the corrosion-resistant steel plate, monitors the uniformity of plate thickness, and determines whether the rolling processing tolerance requirements are met.

[0024] The end of the feeding conveyor is connected to the hinged end of the sorting mechanism, and the movable end of the sorting mechanism is connected to the transport vehicle. The transport vehicle includes a good product bin and a defective product bin. The sorting mechanism receives the corrosion-resistant steel plates after testing and, based on the judgment result of the control system 2, switches the material flow direction, guiding them into the good product bin and defective product bin of the transport vehicle respectively. The sorting mechanism includes a first support frame 15, the top of which is hinged to a second support frame 16. Third guide rollers 17 are evenly distributed on the second support frame 16. The first support frame 15 and the second support frame 16 provide stable support for the sorting of the corrosion-resistant steel plates, and the third guide rollers 17 facilitate the transport of the corrosion-resistant steel plates. The bottom two sides of the second support frame 16 are hinged to one end of a first connecting rod 18, and the other ends of the two first connecting rods 18 are hinged to sliders. The two sliders are slidably connected to the first support frame 15, and the two sliders are connected by a second connecting rod 19. The middle of the second connecting rod 19 is connected to the piston rod of a hydraulic cylinder 20. By extending and retracting the hydraulic cylinder 20 to drive the hinged frame to deflect, the tilt angle of the guide rollers can be changed, switching the material flow direction.

[0025] The control system 2 includes a data acquisition module, a data processing module, an execution drive module, and a communication module. The data processing module includes an image recognition algorithm unit, a size and thickness calculation unit, a defect judgment unit, and a sorting action control unit.

[0026] The data acquisition module is used to collect images of the upper and lower surfaces of the corrosion-resistant steel plate, as well as data on running speed, plate width, and plate thickness in real time, and then transmit them to the data processing module.

[0027] The image recognition algorithm unit is used to preprocess, extract features, and compare defects on the upper and lower surface images of the acquired corrosion-resistant steel plate to determine whether there are defects on the surface of the corrosion-resistant steel plate.

[0028] The image recognition algorithm unit performs image defect grayscale thresholding on the acquired image data and calculates the defect area ratio. The image defect grayscale thresholding formula is shown below: ; in, For pixel region attributes, coordinates The pixel grayscale value at that location, The preset defect grayscale judgment threshold is used; The formula for the percentage of defect area is as follows: ; in, This represents the percentage of surface defect area. This represents the total area of ​​the defects. This refers to the effective area of ​​the steel plate being inspected.

[0029] The dimension and thickness calculation unit is used to integrate the collected data on the running speed, width, and thickness of the corrosion-resistant steel plate, and to calculate the actual length, width, and thickness of the corrosion-resistant steel plate. The formula for calculating the measured length of corrosion-resistant steel plate in the dimension thickness calculation unit is as follows: ; in, The actual measured length of the corrosion-resistant steel plate. The measured average constant transmission speed is obtained using a laser velocimeter. The total time it takes for the corrosion-resistant steel plate to pass through the inspection station from start to finish. , The moment when the tail of the corrosion-resistant steel plate leaves the end of the test. The moment when the head of the corrosion-resistant steel plate enters the detection starting point; The formula for calculating the measured width of corrosion-resistant steel plates is shown below: ; in, The actual measured width of the corrosion-resistant steel plate. The distance between the reference centers of the two laser width measuring instruments. This is the distance from the left-side width gauge to the left edge of the corrosion-resistant steel plate. This is the distance from the right-side width measuring instrument to the right edge of the corrosion-resistant steel plate.

[0030] The defect determination unit is used to compare the measured surface defects, length, width and thickness of the corrosion-resistant steel plate with the standard process threshold to determine whether the corrosion-resistant steel plate is a good product or a defective product. The logical decision formula for the defect determination unit is as follows: ; in, The minimum allowable thickness for corrosion-resistant steel plates, The maximum allowable thickness of corrosion-resistant steel plate. To set the maximum allowable defect percentage threshold, Minimum allowable width for corrosion-resistant steel plates Maximum allowable width of corrosion-resistant steel plate Minimum allowable length for corrosion-resistant steel plates This refers to the maximum allowable length of corrosion-resistant steel plates.

[0031] The sorting action control unit is used to control the extension and retraction stroke of the hydraulic cylinder and adjust the tilt angle of the second support frame according to the judgment result of the corrosion-resistant steel plate, so as to realize the separate unloading of good and defective products.

[0032] The execution drive module is used to receive main control commands to control and execute the actions of conveying corrosion-resistant steel plates, surface cleaning, and angle adjustment of the sorting mechanism.

[0033] The communication module is used for data transmission, enabling human-computer interaction, real-time data display, and detection data storage.

[0034] Therefore, the present invention adopts the above-mentioned blanking device for corrosion-resistant steel rolling processing, which integrates conveying, cleaning, multi-dimensional online detection and automatic sorting, greatly reducing the footprint and number of workstations in the blanking process; the pre-cleaning removes impurities and interference, and with CCD image acquisition and laser non-contact detection, it simultaneously completes the detection of all parameters of surface defects, thickness, width and length, significantly improving the accuracy of defect identification and size measurement, without scratching the surface of corrosion-resistant steel plate, and ensuring the integrity of product appearance and corrosion resistance performance.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A feeding device for rolling corrosion-resistant steel, characterized in that: The device includes a feeding housing, which contains a feeding conveying mechanism, a cleaning mechanism, an online detection mechanism, a feeding sorting mechanism, and a control system. The online detection mechanism includes a first surface detection component, a second surface detection component, a size detection component, and a thickness detection component. The first and second surface detection components have the same structure and are equipped with a CCD image sensor and a strip diffuse reflection light source. The size detection component includes a laser velocimeter and a laser width gauge, with the laser width gauge installed on both sides of the laser velocimeter.

2. The blanking device for corrosion-resistant steel rolling processing according to claim 1, characterized in that: The feeding and conveying mechanism includes a drive motor, which is connected to the input end of a reduction mechanism. The output end of the reduction mechanism is connected to a drive shaft. The drive shaft is connected to a first driven shaft via gear transmission. The drive shaft and the first driven shaft are mounted on a frame. Both the drive shaft and the first driven shaft are connected to the frame via bearings. The first driven shaft is connected to the second and third driven shafts via chain transmission. The second and third driven shafts are provided with a first guide roller on one side along the conveying direction. A second guide roller is provided above the second and third driven shafts and the first guide roller. The second guide rollers are symmetrically arranged with the second and third driven shafts and the first guide roller.

3. The blanking device for corrosion-resistant steel rolling processing according to claim 2, characterized in that: The cleaning mechanism includes two cleaning rollers connected by gear transmission. The two cleaning rollers are symmetrically mounted on the frame, and both cleaning rollers are connected to the frame by bearings. The lower cleaning roller is connected to the first driven shaft by gear transmission.

4. The blanking device for corrosion-resistant steel rolling processing according to claim 3, characterized in that: The thickness detection component is mounted on the frame between the cleaning roller and the second driven shaft. The first surface detection component and the second surface detection component are arranged symmetrically above and below each other. The thickness detection component, the first surface detection component, the second surface detection component, and the size detection component are arranged along the conveying direction.

5. The blanking device for corrosion-resistant steel rolling processing according to claim 4, characterized in that: The end of the feeding conveyor is connected to the hinged end of the sorting mechanism, and the movable end of the sorting mechanism is connected to the transport vehicle. The transport vehicle includes a good product bin and a defective product bin. The sorting mechanism includes a first support frame, the top of the first support frame is hinged to a second support frame, and third guide rollers are evenly distributed on the second support frame. The bottom two sides of the second support frame are hinged to one end of the first connecting rod, and the other ends of the two first connecting rods are hinged to the sliders. The two sliders are slidably connected to the first support frame, and the two sliders are connected to each other through the second connecting rod. The middle of the second connecting rod is connected to the piston rod of the hydraulic cylinder.

6. The blanking device for corrosion-resistant steel rolling processing according to claim 5, characterized in that: The control system includes a data acquisition module, a data processing module, an execution drive module, and a communication module. The data processing module includes an image recognition algorithm unit, a size and thickness calculation unit, a defect judgment unit, and a sorting action control unit. The data acquisition module is used to collect images of the upper and lower surfaces of the corrosion-resistant steel plate, running speed, plate width, and plate thickness in real time, and transmit them to the data processing module. The image recognition algorithm unit is used to preprocess, extract features, and compare defects on the upper and lower surface images of the acquired corrosion-resistant steel plate to determine whether there are defects on the surface of the corrosion-resistant steel plate. The dimension and thickness calculation unit is used to integrate the collected data on the running speed, width, and thickness of the corrosion-resistant steel plate, and to calculate the actual length, width, and thickness of the corrosion-resistant steel plate. The defect determination unit is used to compare the measured surface defects, length, width and thickness of the corrosion-resistant steel plate with the standard process threshold to determine whether the corrosion-resistant steel plate is a good product or a defective product. The sorting action control unit is used to control the extension and retraction stroke of the hydraulic cylinder and adjust the tilt angle of the second support frame according to the judgment result of the corrosion-resistant steel plate, so as to realize the separate unloading of good and defective products. The execution drive module is used to receive main control commands to control and execute the actions of conveying corrosion-resistant steel plates, surface cleaning, and angle adjustment of the sorting mechanism; The communication module is used for data transmission, enabling human-computer interaction, real-time data display, and detection data storage.

7. The blanking device for corrosion-resistant steel rolling processing according to claim 6, characterized in that: The image recognition algorithm unit performs image defect grayscale thresholding on the acquired image data and calculates the defect area ratio. The image defect grayscale thresholding formula is shown below: ； in, For pixel region attributes, coordinates The pixel grayscale value at that location, The preset defect grayscale judgment threshold is used; The formula for the percentage of defect area is as follows: ； in, This represents the percentage of surface defect area. This represents the total area of ​​the defects. This refers to the effective area of ​​the steel plate being inspected.

8. The blanking device for corrosion-resistant steel rolling processing according to claim 7, characterized in that: The formula for calculating the measured length of corrosion-resistant steel plate in the dimension thickness calculation unit is as follows: ； in, The actual measured length of the corrosion-resistant steel plate. The measured average constant transmission speed is obtained using a laser velocimeter. The total time it takes for the corrosion-resistant steel plate to pass through the inspection station from start to finish. , The moment when the tail of the corrosion-resistant steel plate leaves the end of the test. The moment when the head of the corrosion-resistant steel plate enters the detection starting point; The formula for calculating the measured width of corrosion-resistant steel plates is as follows: ； in, The actual measured width of the corrosion-resistant steel plate. The distance between the reference centers of the two laser width measuring instruments. This is the distance from the left-side width gauge to the left edge of the corrosion-resistant steel plate. This is the distance from the right-side width measuring instrument to the right edge of the corrosion-resistant steel plate.

9. The blanking device for corrosion-resistant steel rolling processing according to claim 8, characterized in that: The logical decision formula for the defect determination unit is as follows: ； in, The minimum allowable thickness for corrosion-resistant steel plates, The maximum allowable thickness of corrosion-resistant steel plate. To set the maximum allowable defect percentage threshold, Minimum allowable width for corrosion-resistant steel plates Maximum allowable width of corrosion-resistant steel plate Minimum allowable length for corrosion-resistant steel plates This refers to the maximum allowable length of corrosion-resistant steel plates.

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