A laser detection device for stainless steel cold-rolled sheet

Abstract

The present application belongs to the technical field of stainless steel plate detection, especially a kind of stainless steel cold-rolled plate laser detection device, for the oil stain that will inevitably exist on the surface of stainless steel cold-rolled plate after rolling, lead to laser signal is easy to produce refraction and scattering when emitting to the surface of stainless steel plate, in turn lead to influence laser detection precision, the following scheme is presented, including: detection base, detection base is provided with detection table, two X-axis moving mechanisms are further provided on the detection base, and the detection table is located between the two X-axis moving mechanisms.The stainless steel cold-rolled plate laser detection device disclosed in the present application has the effect of improving laser detection precision and detection effect, and when detecting, the device can clean the oil stain on the corresponding position of the stainless steel cold-rolled plate according to the laser detection point, so as to avoid refraction or scattering of laser signal during detection, to ensure detection precision and improve the use effect of the device.

Description

Technical Field

[0001] This invention relates to the field of stainless steel sheet inspection technology, and in particular to a laser inspection device for cold-rolled stainless steel sheets. Background Technology

[0002] Cold-rolled stainless steel sheet is a type of high-precision stainless steel product made from hot-rolled stainless steel coils through complex processes such as multiple rolling, annealing, pickling, leveling, and finishing at room temperature. Compared with hot-rolled sheet, its most significant feature is its extremely high thickness accuracy and smooth and clean surface. Furthermore, the strength and hardness of the material can be improved through the cold rolling process. Therefore, it is widely used in fields with high requirements for material appearance, dimensional accuracy, and mechanical properties.

[0003] Laser inspection of sheet metal is an automated quality inspection method that uses laser measuring instruments combined with industrial vision and visual intelligence technology to perform non-contact, high-precision measurement of sheet metal geometric parameters and surface quality. Its principle is to acquire sheet metal data through laser scanning, and then analyze it through visual algorithms and deep learning models to achieve real-time identification and prediction of thickness, flatness and defects, effectively improving the quality control efficiency and intelligence level of the production line.

[0004] When performing laser flatness inspection on existing cold-rolled stainless steel sheets, cold rolling oil is added during the cold rolling process, so oil stains inevitably remain on the surface after rolling. This causes the laser signal to be easily refracted and scattered when it is emitted to the surface of the stainless steel sheet, thus affecting the accuracy of laser inspection. Summary of the Invention

[0005] This invention discloses a laser inspection device for cold-rolled stainless steel sheets, aiming to solve the technical problem in the background art where oil stains inevitably exist on the surface of cold-rolled stainless steel sheets after rolling, causing laser signals to be easily refracted and scattered when emitted to the surface of the stainless steel sheets, thus affecting the accuracy of laser inspection.

[0006] The present invention proposes a laser inspection device for cold-rolled stainless steel sheets, comprising: The testing machine base has a testing table, and the testing machine base is also equipped with two X-axis moving mechanisms, with the testing table located between the two X-axis moving mechanisms. The Y-axis moving mechanism is mounted on two X-axis moving mechanisms. A laser detection mechanism is mounted on the Y-axis moving mechanism, and a laser emitting end is mounted on the laser detection mechanism. The mounting ring is mounted on the laser detection mechanism, and the laser emitting end is located inside the mounting ring. An outer ring turntable is also provided on the mounting ring. A laser oil stain removal unit is installed on the outer ring turntable. The laser oil stain removal unit includes a soft cleaning belt and a telescopic airbag, with the telescopic airbag located above the soft cleaning belt. A laser light-shielding module is mounted on an outer ring turntable. The laser light-shielding module includes a light-shielding curtain and a photosensor.

[0007] In a preferred embodiment, it also includes: A drive motor is mounted on the laser detection mechanism and is located on one side of the laser emitting end. The output shaft of the drive motor is connected to a drive gear via a coupling. An active gear ring is mounted on an outer ring turntable and meshes with a drive gear.

[0008] In a preferred embodiment, the laser oil stain unit further includes: A fixed ring frame is provided on the outer ring turntable. The fixed ring frame is provided with two mounting shafts, and the two mounting shafts are provided with the same flipping frame. A general-purpose motor is mounted on a tilting frame, and the output shaft of the general-purpose motor is connected to one end of one of the mounting shafts via a coupling.

[0009] In a preferred embodiment, the laser oil stain unit further includes: A horizontal plate is mounted on a tilting frame. The horizontal plate has two drive shafts, each with a rotating roller frame. A soft cleaning belt is mounted on the two rotating roller frames. An active motor is mounted on a horizontal plate, and the output shaft of the active motor is connected to one end of one of the drive shafts via a coupling.

[0010] In a preferred embodiment, the laser oil stain unit further includes: The linkage wheel is mounted on one of the drive shafts; The driven wheel is mounted on another drive shaft, and the driven wheel and the linkage wheel are provided with the same linkage belt. A fixed plate frame is provided on the flipping frame, and the fixed plate frame has multiple guide holes.

[0011] In a preferred embodiment, the laser oil stain unit further includes: Multiple guide rods are respectively disposed inside multiple guide holes, and the bottom end of the multiple guide rods is provided with the same pressure plate, the bottom of the pressure plate being in contact with the outer wall of the soft cleaning belt; Multiple reset springs are respectively disposed on the outside of multiple guide rods. One end of each reset spring is disposed on a fixed plate frame, and the other end of each reset spring is disposed on a pressure plate.

[0012] In a preferred embodiment, the laser oil stain unit further includes: The mounting frame is mounted on the fixed ring frame, and the mounting frame is equipped with the air pump body; An airflow pipe is installed at the output end of the air pump body, and a telescopic airbag is installed at the output end of the airflow pipe, with the telescopic airbag located between the fixed plate frame and the pressure plate.

[0013] In a preferred embodiment, the laser shielding module further includes: A light-shielding plate is disposed on the outer ring turntable, and the photosensitive sensor is disposed on the light-shielding plate; A guide is provided on a light-shielding plate, and a support is also provided on the light-shielding plate. An arc-shaped guide rod is provided on the support and the guide.

[0014] In a preferred embodiment, the laser shielding module further includes: A guide rod groove is formed on one of the arc-shaped guide rods, and an arc-shaped rack is provided inside the guide rod groove; A shaft member is mounted on a support member, and a gear member is mounted on the shaft member, which meshes with an arc-shaped rack.

[0015] In a preferred embodiment, the laser shielding module further includes: A power motor is mounted on a support member, and the output shaft of the power motor is connected to one end of a shaft member via a coupling. Guide rod bracket, the guide rod bracket is set at one end of the two arc-shaped guide rods; An unfolding frame is mounted on a guide rod support, and the light-blocking curtain is mounted on the unfolding frame and the light-blocking plate.

[0016] As can be seen from the above, the laser inspection device for cold-rolled stainless steel sheets provided by the present invention has the function of improving the accuracy and effect of laser inspection. During inspection, the device can clean the oil stains at the corresponding positions of the cold-rolled stainless steel sheets according to the laser inspection points, thereby avoiding the refraction or scattering of the laser signal during inspection, so as to ensure the inspection accuracy and improve the use effect of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 2This is a schematic diagram of the combined structure of the laser detection mechanism and the laser emitting end of a laser detection device for cold-rolled stainless steel sheets proposed in this invention. Figure 3 This is a schematic diagram of the combination structure of the outer ring turntable and drive motor of the laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 4 This is a schematic diagram of the laser oil stain unit structure of a laser detection device for cold-rolled stainless steel sheets proposed in this invention; Figure 5 This is a schematic diagram of the combined structure of the telescopic airbag and the fixed plate frame of the laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 6 This is a schematic diagram of the horizontal plate and drive shaft combination structure of a laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 7 This is a schematic diagram of the disassembled structure of the guide rod and reset spring of a laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 8 This is a schematic diagram of the laser shielding module structure of a laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 9 This is a schematic diagram of the combined structure of the power motor and the light-shielding curtain of the laser inspection device for cold-rolled stainless steel sheets proposed in this invention. Figure 10 This is a schematic diagram of the disassembled structure of the arc-shaped rack and guide rod groove of the laser inspection device for cold-rolled stainless steel sheet proposed in this invention.

[0018] In the diagram: 1. Detection base; 2. Y-axis moving mechanism; 3. Laser detection mechanism; 4. X-axis moving mechanism; 5. Detection table; 6. Laser emitting head; 7. Laser oil stain unit; 701. Fixed ring frame; 702. Tilting frame; 703. Horizontal plate; 704. Soft cleaning belt; 705. Rotating roller frame; 706. Telescopic airbag; 707. Fixed plate frame; 708. Mounting shaft; 709. Air pump body; 710. Mounting bracket; 711. Airflow pipe; 712. Drive shaft; 713. General motor; 714. Active motor; 715. Return spring; 716. Guide rod Components; 717, Guide hole; 718, Linkage wheel; 719, Linkage belt; 720, Passive wheel; 721, Pressure plate; 8, Laser shading module; 801, Shading plate; 802, Shading curtain; 803, Guide component; 804, Arc-shaped guide rod; 805, Guide rod bracket; 806, Deployment frame; 807, Power motor; 808, Photosensitive sensor; 809, Gear component; 810, Guide rod groove; 811, Arc-shaped rack; 812, Bracket component; 813, Shaft component; 9, Outer ring turntable; 10, Drive motor; 11, Drive gear; 12, Active gear ring; 13, Mounting ring frame. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] The laser inspection device for cold-rolled stainless steel sheets disclosed in this invention is mainly used in situations where oil stains inevitably exist on the surface of cold-rolled stainless steel sheets after rolling, causing the laser signal to be easily refracted and scattered when emitted to the surface of the stainless steel sheet, thus affecting the accuracy of laser inspection.

[0021] Reference Figures 1-10 A laser inspection device for cold-rolled stainless steel sheets, comprising: The testing machine base 1 is provided with a testing table 5 and two X-axis moving mechanisms 4. The testing table 5 is located between the two X-axis moving mechanisms 4. Y-axis moving mechanism 2 is set on two X-axis moving mechanisms 4. A laser detection mechanism 3 is set on the Y-axis moving mechanism 2. A laser emitting end 6 is set on the laser detection mechanism 3. Mounting ring frame 13 is mounted on laser detection mechanism 3. Laser emitting end 6 is located inside mounting ring frame 13. An outer ring turntable 9 is also mounted on mounting ring frame 13. Laser oil stain unit 7 is set on the outer ring turntable 9. Laser oil stain unit 7 includes a soft cleaning belt 704 and a telescopic airbag 706. The telescopic airbag 706 is located above the soft cleaning belt 704. The laser shading module 8 is mounted on the outer ring turntable 9 and includes a shading curtain 802 and a photosensor 808.

[0022] Reference Figure 3 and Figure 4 In a preferred embodiment, it further includes: The drive motor 10 is mounted on the laser detection mechanism 3. The drive motor 10 is located on one side of the laser emitting end 6. The output shaft of the drive motor 10 is connected to the drive gear 11 through a coupling. The active gear ring 12 is mounted on the outer ring turntable 9 and meshes with the drive gear 11.

[0023] Reference Figures 2-7 In a preferred embodiment, the laser oil stain unit 7 further includes: A fixed ring frame 701 is set on the outer ring turntable 9. Two mounting shafts 708 are provided on the fixed ring frame 701, and the same flipping frame 702 is provided on the two mounting shafts 708. A general-purpose motor 713 is mounted on a tilting frame 702. The output shaft of the general-purpose motor 713 is connected to one end of a mounting shaft 708 via a coupling.

[0024] In this invention, the laser oil stain unit 7 further includes: A horizontal plate 703 is mounted on a tilting frame 702. Two drive shafts 712 are mounted on the horizontal plate 703. Rotating roller frames 705 are mounted on both drive shafts 712. A soft cleaning belt 704 is mounted on the two rotating roller frames 705. An active motor 714 is mounted on a horizontal plate 703. The output shaft of the active motor 714 is connected to one end of one of the drive shafts 712 via a coupling.

[0025] In this invention, the laser oil stain unit 7 further includes: Linkage wheel 718, which is mounted on one of the drive shafts 712; The driven wheel 720 is mounted on another drive shaft 712, and the driven wheel 718 and the driven wheel 720 are connected by the same drive belt 719. A fixed plate frame 707 is mounted on a flipping frame 702, and the fixed plate frame 707 has multiple guide holes 717.

[0026] In this invention, the laser oil stain unit 7 further includes: Multiple guide rods 716 are respectively disposed inside multiple guide holes 717. The bottom end of the multiple guide rods 716 is provided with the same pressure plate 721, and the bottom of the pressure plate 721 is in contact with the outer wall of the soft cleaning belt 704. Multiple return springs 715 are respectively disposed on the outside of multiple guide rods 716. One end of each return spring 715 is disposed on a fixed plate frame 707, and the other end of each return spring 715 is disposed on a pressure plate 721.

[0027] In this invention, the laser oil stain unit 7 further includes: Mounting bracket 710 is mounted on fixing ring frame 701, and air pump body 709 is mounted on mounting bracket 710; An airflow pipe 711 is located at the output end of the air pump body 709. A telescopic airbag 706 is located at the output end of the airflow pipe 711 and is situated between the fixed plate frame 707 and the pressure plate 721.

[0028] Specifically, during the flatness inspection of stainless steel cold-rolled sheets, the general-purpose motor 713 is activated based on the detection positions of the laser detection mechanism 3 and the laser emitting end 6. The operation of the general-purpose motor 713 drives the mounting shaft 708 to rotate, which in turn causes the mounting shaft 708 to rotate the flipping frame 702, allowing the soft cleaning belt 704 to be positioned parallel above the stainless steel sheet. At this time, the air pump body 709 operates, directing external airflow through the airflow pipe 711 into the telescopic airbag 706, causing the telescopic airbag 706 to inflate. As the telescopic airbag 706 expands, it causes the guide rod 716 to move within the guide hole 717, while the return spring 715 is stretched until... The pressure plate 721 presses down on the soft cleaning belt 704, making it contact the surface of the stainless steel cold-rolled sheet. Then, the active motor 714 runs, driving one of the drive shafts 712 to rotate, which in turn drives the linkage wheel 718 to rotate. At this time, due to the arrangement of the linkage belt 719, the linkage wheel 718 and the driven wheel 720, the two drive shafts 712 can synchronously drive the rotating roller frame 705 to rotate, thereby causing the soft cleaning belt 704 to unwind and rewind on the rotating roller frame 705. This, combined with the pressure of the pressure plate 721, cleans the oil stains on the surface of the stainless steel cold-rolled sheet until the oil stain cleaning operation of the inspection area is completed, and the device is reset for laser flatness inspection. In specific application scenarios, the laser oil stain unit 7 is set in the laser flatness detection stage of stainless steel cold-rolled sheet. That is, the laser oil stain unit 7 can accurately remove the cold-rolled oil stains on the surface of the stainless steel cold-rolled sheet before performing laser measurement, effectively avoiding the refraction and scattering of the laser signal caused by the oil stain film. This ensures the authenticity and stability of the reflected light signal during detection, so that the contour data obtained by the laser emitting end 6 can truly reflect the actual shape of the sheet, thereby improving the accuracy and effect of the laser flatness detection of the device. Moreover, when cleaning the oil stains, the cleaning pressure is flexibly controlled by the air pressure through the cooperation of the air pump body 709 and the telescopic air bag 706, avoiding rigid mechanical clamping. At the same time, the structure of the reset spring 715 and the guide rod 716 provides elastic buffering, which can ensure that the soft cleaning belt 704 fully contacts the sheet surface to wipe off the oil film, while avoiding scratches or indentations on the delicate and smooth stainless steel surface due to excessive pressure, protecting the appearance quality of the product, and further improving the detection effect of the device. It should be noted that the device, through structures such as the fixed ring frame 701 and the flipping frame 702, can move synchronously with the laser detection mechanism 3, and only performs local cleaning on the current measurement position without affecting other areas of the board. This reduces energy consumption and meets the requirements of online, continuous and high-speed detection. The soft cleaning belt 704 achieves synchronous winding and unwinding through the drive shaft 712, the linkage wheel 718 and the linkage belt 719, ensuring that the belt surface area is clean every time it comes into contact with the board. The wiped oil stains are promptly rolled into the winding side, avoiding secondary contamination of the cleaned area and ensuring the continuous effectiveness of the cleaning effect. This unit can be linked with the X and Y axis movement system of the laser inspection mechanism 3 to automatically complete the entire process of positioning, cleaning, resetting and measurement without manual intervention, effectively reducing auxiliary time and improving the automation and intelligence level of the production line.

[0029] Reference Figure 2 , Figure 3 and Figures 8-10 In a preferred embodiment, the laser shielding module 8 further includes: A light-shielding plate 801 is disposed on the outer ring turntable 9, and a light sensor 808 is disposed on the light-shielding plate 801; A guide 803 is provided on a light shield 801. A bracket 812 is also provided on the light shield 801. An arc-shaped guide rod 804 is provided on the bracket 812 and the guide 803.

[0030] In this invention, the laser shielding module 8 further includes: The guide rod groove 810 is formed on one of the arc-shaped guide rods 804, and an arc-shaped rack 811 is provided inside the guide rod groove 810; A shaft member 813 is mounted on a bracket member 812. A gear member 809 is mounted on the shaft member 813, and the gear member 809 meshes with an arc-shaped rack 811.

[0031] In this invention, the laser shielding module 8 further includes: The power motor 807 is mounted on the bracket 812, and the output shaft of the power motor 807 is connected to one end of the shaft member 813 via a coupling. Guide rod bracket 805 is disposed at one end of two arc-shaped guide rods 804; The unfolding frame 806 is mounted on the guide rod support 805, and the light-blocking curtain 802 is mounted on the unfolding frame 806 and the light-blocking plate 801.

[0032] Specifically, during detection, the photosensitive sensor 808 operates and detects ambient light. When the ambient light is too strong or a light-shielding operation is required, the power motor 807 operates, driving the shaft 813 and gear 809 to rotate. Since the gear 809 meshes with the arc-shaped rack 811, the gear 809 can drive the arc-shaped guide rod 804 to move on the support 812 and guide 803, thereby causing the unfolding frame 806 to move away from the light-shielding plate 801. At the same time, as the unfolding frame 806 moves away, the device can unfold the light-shielding curtain 802 to increase the light-shielding range. At this time, the device can also drive the drive motor 10 as needed, thereby causing the drive gear 11 to drive the active gear ring 12 and the outer ring turntable 9 to rotate, thereby changing the angle position of the light-shielding plate 801 and the light-shielding curtain 802 to reduce the influence of strong ambient light or to prevent excessive reflection of light from other parts of the plate from affecting the laser detection operation. In specific application scenarios, the laser shading module 8 is suitable for the inspection of stainless steel cold-rolled sheets. The laser shading module 8 monitors the ambient light intensity in real time through the photosensitive sensor 808. When strong light (such as sunlight or strong workshop lighting) is detected that may interfere with the laser signal, the power motor 807 drives the shading curtain 802 to automatically unfold. In conjunction with the outer ring turntable 9, the shading plate 801 is rotated, which can physically isolate stray light. This ensures that the laser emitting end 6 can still obtain a high signal-to-noise ratio reflected signal under complex lighting conditions, avoiding misjudgments caused by ambient light. Furthermore, the arc-shaped guide rod 804, gear component 809, arc-shaped rack 811 and other structures allow the shading curtain 802 to be adjusted in a controllable manner. The unfolding frame 806 slides on the guide rod support 805, so that the blocking area of ​​the shading curtain 802 can be dynamically adjusted according to the ambient light intensity. This avoids excessive shading from affecting the operator's field of vision while also providing targeted shading for strong side light or reflected light, thereby improving the effectiveness of the device.

[0033] Working principle: When performing flatness inspection on stainless steel cold-rolled sheet, the X-axis moving mechanism 4 and the Y-axis moving mechanism 2 drive the laser inspection mechanism 3 and the laser emitting end 6 to move, thereby performing flatness inspection. During the flatness inspection process, the general-purpose motor 713 is activated based on the detection positions of the laser detection mechanism 3 and the laser emitting end 6. The operation of the general-purpose motor 713 drives the mounting shaft 708 to rotate, which in turn causes the mounting shaft 708 to rotate the flipping frame 702, allowing the soft cleaning belt 704 to be positioned parallel to the stainless steel plate. At this time, the air pump body 709 operates, directing external airflow through the airflow pipe 711 into the telescopic airbag 706, causing the telescopic airbag 706 to inflate. As the telescopic airbag 706 expands, it causes the guide rod 716 to move within the guide hole 717, while the return spring 715 is stretched until the pressure plate 721 is lowered. The soft cleaning belt 704 is pressed and brought into contact with the surface of the cold-rolled stainless steel sheet. Then, the active motor 714 runs, driving one of the drive shafts 712 to rotate, which in turn drives the linkage wheel 718 to rotate. At this time, due to the setting of the linkage belt 719, the linkage wheel 718 and the driven wheel 720, the two drive shafts 712 can synchronously drive the rotating roller frame 705 to rotate, thereby causing the soft cleaning belt 704 to loosen and rewind on the rotating roller frame 705. This, together with the pressure of the pressure plate 721, cleans the oil stains on the surface of the cold-rolled stainless steel sheet until the oil stain cleaning operation of the detection area is completed, and the device is reset for laser flatness detection. During detection, the photosensitive sensor 808 operates to detect ambient light. When the ambient light is too strong or shading is required, the power motor 807 operates, driving the shaft 813 and gear 809 to rotate. Since the gear 809 meshes with the arc-shaped rack 811, it can drive the arc-shaped guide rod 804 to move on the support 812 and guide 803, thereby moving the unfolding frame 806 away from the light-shielding plate 801. As the unfolding frame 806 moves away, the device can unfold the light-shielding curtain 802 to increase the shading range. At this time, the device can also drive the drive motor 10 as needed, causing the drive gear 11 to drive the active gear ring 12 and the outer ring turntable 9 to rotate, thereby changing the angle and position of the light-shielding plate 801 and the light-shielding curtain 802 to reduce the influence of strong ambient light or to prevent excessive reflection of light from other parts of the plate from affecting the laser detection operation.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A laser inspection device for cold-rolled stainless steel sheets, characterized in that, include: The testing base (1) is provided with a testing table (5), and the testing base (1) is also provided with two X-axis moving mechanisms (4), with the testing table (5) located between the two X-axis moving mechanisms (4); Y-axis moving mechanism (2), Y-axis moving mechanism (2) is set on two X-axis moving mechanisms (4), and laser detection mechanism (3) is set on the Y-axis moving mechanism (2), and laser emitting end (6) is set on the laser detection mechanism (3). Mounting ring frame (13) is set on laser detection mechanism (3). The laser emitting end (6) is located inside the mounting ring frame (13). An outer ring turntable (9) is also set on the mounting ring frame (13). Laser oil stain unit (7) is set on the outer ring turntable (9). The laser oil stain unit (7) includes a soft cleaning belt (704) and a telescopic airbag (706). The telescopic airbag (706) is located above the soft cleaning belt (704). The laser shading module (8) is set on the outer ring turntable (9). The laser shading module (8) includes a shading curtain (802) and a photosensitive sensor (808).

2. The laser inspection device for cold-rolled stainless steel sheets according to claim 1, characterized in that, Also includes: The drive motor (10) is mounted on the laser detection mechanism (3). The drive motor (10) is located on one side of the laser emitting end (6). The output shaft of the drive motor (10) is connected to the drive gear (11) through a coupling. The active gear ring (12) is disposed on the outer ring turntable (9) and meshes with the drive gear (11).

3. The laser inspection device for cold-rolled stainless steel sheets according to claim 1, characterized in that, The laser oil stain unit (7) also includes: A fixed ring frame (701) is provided on the outer ring turntable (9). The fixed ring frame (701) is provided with two mounting shafts (708), and the two mounting shafts (708) are provided with the same flipping frame (702). A general-purpose motor (713) is mounted on a tilting frame (702), and the output shaft of the general-purpose motor (713) is connected to one end of one of the mounting shafts (708) via a coupling.

4. The laser inspection device for cold-rolled stainless steel sheets according to claim 3, characterized in that, The laser oil stain unit (7) also includes: A horizontal plate (703) is mounted on a tilting frame (702). The horizontal plate (703) is provided with two drive shafts (712). Each of the two drive shafts (712) is provided with a rotating roller frame (705). A soft cleaning belt (704) is mounted on the two rotating roller frames (705). An active motor (714) is mounted on a horizontal plate (703), and the output shaft of the active motor (714) is connected to one end of one of the drive shafts (712) via a coupling.

5. A laser inspection device for cold-rolled stainless steel sheets according to claim 4, characterized in that, The laser oil stain unit (7) also includes: Linkage wheel (718), which is mounted on one of the drive shafts (712); A passive wheel (720) is mounted on another drive shaft (712), and the drive wheel (718) and the passive wheel (720) are provided with the same drive belt (719). A fixed plate frame (707) is provided on a flip frame (702), and the fixed plate frame (707) is provided with multiple guide holes (717).

6. The laser inspection device for cold-rolled stainless steel sheets according to claim 5, characterized in that, The laser oil stain unit (7) also includes: Multiple guide rods (716) are respectively disposed inside multiple guide holes (717), and the bottom end of the multiple guide rods (716) is provided with the same pressure plate (721), and the bottom of the pressure plate (721) is in contact with the outer wall of the soft cleaning belt (704); Multiple reset springs (715) are respectively disposed on the outside of multiple guide rods (716). One end of each reset spring (715) is disposed on a fixed plate frame (707), and the other end of each reset spring (715) is disposed on a pressure plate (721).

7. A laser inspection device for cold-rolled stainless steel sheets according to claim 6, characterized in that, The laser oil stain unit (7) also includes: Mounting bracket (710), mounted on a fixing ring frame (701), and an air pump body (709) is mounted on the mounting bracket (710). An airflow pipe (711) is provided on the output end of the air pump body (709), and a telescopic airbag (706) is provided on the output end of the airflow pipe (711). The telescopic airbag (706) is located between the fixed plate frame (707) and the pressure plate (721).

8. The laser inspection device for cold-rolled stainless steel sheets according to claim 1, characterized in that, The laser shielding module (8) also includes: A light-shielding plate (801) is disposed on the outer ring turntable (9), and the photosensitive sensor (808) is disposed on the light-shielding plate (801); A guide (803) is provided on a light shield (801). A bracket (812) is also provided on the light shield (801). An arc-shaped guide rod (804) is provided on the bracket (812) and the guide (803).

9. A laser inspection device for cold-rolled stainless steel sheets according to claim 8, characterized in that, The laser shielding module (8) also includes: A guide rod groove (810) is formed on one of the arc-shaped guide rods (804), and an arc-shaped rack (811) is provided inside the guide rod groove (810). A shaft member (813) is mounted on a support member (812). A gear member (809) is mounted on the shaft member (813), and the gear member (809) meshes with an arc-shaped rack (811).

10. A laser inspection device for cold-rolled stainless steel sheets according to claim 9, characterized in that, The laser shielding module (8) also includes: A power motor (807) is mounted on a bracket (812), and the output shaft of the power motor (807) is connected to one end of a shaft member (813) via a coupling. Guide rod bracket (805), the guide rod bracket (805) is set at one end of the two arc-shaped guide rods (804); The unfolding frame (806) is mounted on the guide rod support (805), and the light-blocking curtain (802) is mounted on the unfolding frame (806) and the light-blocking plate (801).

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