Cold rolling cold acid line steel belt defect surface detection device

Abstract

The utility model provides a cold rolling and cold acid line steel belt defect surface detection device which comprises a tension roller set and a steering roller. A steel belt sequentially passes through the steering roller and the tension roller set in the transportation process. The shooting mechanism faces the steel belt, and the shooting mechanism can shoot the steel belt in the transportation process; the utility model discloses a cold rolling cold acid line steel belt defect surface detection device, which is favorable for realizing the automatic detection of the steel belt defect and improving the accuracy of the steel belt detection, and comprises a shooting mechanism and a lighting mechanism, the lighting mechanism faces towards the steel belt, and the lighting mechanism can provide light for the shooting mechanism. The cold rolling cold acid line steel belt defect surface detection device disclosed by the utility model is favorable for realizing the automatic detection of the steel belt defect and improving the accuracy of the steel belt detection. And meanwhile, the working risk during detection is reduced.

Description

Technical Field

[0001] This utility model relates to the field of strip steel inspection, and in particular to a surface defect inspection device for cold-rolled cold-pickled steel strip. Background Technology

[0002] In the steel coil production system, the quality inspection station on the cold acid line is located at the exit section. Currently, quality inspectors mainly rely on visual inspection to check the surface quality of the steel strip. Under such high-speed operation, quality inspectors cannot completely detect surface defects of the steel coils running at high speeds. This results in some defects on the surface of the finished steel strip going undetected, posing a risk of missed inspections and compromising product quality.

[0003] To carefully inspect defective steel coils and take photos and videos as evidence, the steel strip at the exit coiling section needs to be stopped or run at a slow speed. If the steel strip stops or runs at a slow speed for a slightly longer time, it will cause the small looper at the pickling exit to be fully loaded, resulting in a slowdown in the process section, affecting the production rhythm of the production line, and thus affecting the output and product quality. At the same time, there are also safety risks when staff are close to inspect the coils. Utility Model Content

[0004] The purpose of this invention is to provide a surface defect detection device for cold-rolled cold-acid steel strip, so as to realize the automatic detection of surface defects of steel coils.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a surface defect detection device for cold-rolled cold-acid steel strip, comprising a tension roller group and a guide roller, wherein the steel strip passes sequentially through the guide roller and the tension roller group during transportation; an imaging mechanism facing the steel strip, capable of photographing the steel strip during transportation; and an illumination mechanism facing the steel strip, capable of providing illumination to the imaging mechanism.

[0006] Furthermore, the tension roller group includes a first tension roller and a second tension roller, with the first tension roller located between the second tension roller and the steering roller, and the steel strip passing through the first tension roller and the second tension roller in sequence during transportation.

[0007] Furthermore, the shooting mechanism includes a first camera unit and a second camera unit, wherein the first camera unit is capable of shooting one side of the steel strip and the second camera unit is capable of shooting the other side of the steel strip.

[0008] Furthermore, the first camera unit is positioned toward the steel strip on the second tension roller, and the second camera unit is positioned toward the steel strip between the steering roller and the second tension roller.

[0009] Furthermore, the lighting mechanism includes a first light source and a second light source, the first light source being directed toward the steel strip on the second tension roller, and the second light source being directed toward the steel strip between the steering roller and the second tension roller.

[0010] Furthermore, the first camera unit includes a first bright-field camera and a first dark-field camera, and the second camera unit includes a second bright-field camera and a second dark-field camera. The first bright-field camera and the first dark-field camera are both oriented towards the illumination point of the first light source on the steel strip, and the second bright-field camera and the second dark-field camera are both oriented towards the illumination point of the second light source on the steel strip.

[0011] Furthermore, the angle between the first bright-field camera and the first light source is 10°-20°; the angle between the first dark-field camera and the first light source is 60°-80°.

[0012] Furthermore, the surface inspection device also includes multiple belt breakage protection frames, which are respectively disposed between the second tension roller and the first camera unit, between the first tension roller and the second camera unit, and between the first camera unit and the steering roller.

[0013] Furthermore, the surface inspection device also includes a support roller located below the second camera unit, the support roller being capable of supporting the steel strip.

[0014] Furthermore, the surface inspection device also includes an encoder mounted on the second tension roller, the encoder being capable of calculating the transport length of the steel strip.

[0015] Analysis shows that this utility model discloses a surface defect detection device for cold-rolled cold-pickled steel strip. This utility model is beneficial for realizing the automatic detection of steel strip defects and improving the accuracy of steel strip detection. At the same time, it reduces the working risks during detection. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0017] Figure 1 A schematic diagram of the structure of an embodiment of this utility model.

[0018] Figure 2 A schematic diagram of the structure of an encoder according to an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. First tension roller; 2. Second tension roller; 3. Guide roller; 4. Steel belt; 5. First light source; 6. Second light source; 7. First bright field camera; 8. First dark field camera; 9. Second bright field camera; 10. Second dark field camera; 11. Belt breakage protection frame; 12. Idler roller; 13. Encoder. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0021] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] The accompanying drawings illustrate one or more examples of the present invention. The detailed description uses numerals and letters to refer to features in the drawings. Similar or analogous reference numerals in the drawings and description have been used to refer to similar or analogous parts of the present invention. As used herein, the terms “first,” “second,” “third,” and “fourth,” etc., are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of a single component.

[0023] like Figures 1-2 As shown, according to an embodiment of the present invention, a defect surface detection device for cold-rolled cold-acid wire steel strip is provided.

[0024] During transportation, the tension roller group and the guide roller 3, the steel belt 4 passes through the guide roller 3 and the tension roller group in sequence;

[0025] The tension roller assembly includes a first tension roller 1 and a second tension roller 2. The first tension roller 1 is located between the second tension roller 2 and the guide roller 3. The steel belt 4 passes through the second tension roller 2 and the first tension roller 1 in sequence during transportation.

[0026] The camera mechanism faces the steel belt 4 and is capable of filming the steel belt 4 during transportation.

[0027] The shooting mechanism includes a first camera unit and a second camera unit. The first camera unit can shoot one side of the steel strip 4, and the second camera unit can shoot the other side of the steel strip 4.

[0028] The first camera unit faces the steel strip 4 on the second tension roller 2, and the second camera unit faces the steel strip 4 between the steering roller 3 and the second tension roller 2.

[0029] The first camera unit includes a first bright-field camera 7 and a first dark-field camera 8, and the second camera unit includes a second bright-field camera 9 and a second dark-field camera 10. The first bright-field camera 7 and the first dark-field camera 8 are both oriented towards the illumination point of the first light source 5 on the steel strip 4, and the second bright-field camera 9 and the second dark-field camera 10 are both oriented towards the illumination point of the second light source 6 on the steel strip 4.

[0030] The first bright-field camera 7 and the first dark-field camera 8 are mounted on the first fixed frame, and the second bright-field camera 9 and the second dark-field camera 10 are mounted on the second fixed frame. The first bright-field camera 7, the first dark-field camera 8, the second bright-field camera 9 and the second dark-field camera 10 are fixed on the first fixed frame and the second fixed frame by camera fixing devices.

[0031] The surface inspection device also includes multiple belt breakage protection frames 11, which are respectively located between the second tension roller 2 and the first camera unit, between the first tension roller 1 and the second camera unit, and between the first camera unit and the steering roller 3.

[0032] The broken belt protection frame 11 can limit the movement range of the broken steel belt 4, so that the broken steel belt 4 will not damage the camera.

[0033] The power supply voltage for the first bright-field camera 7, the first dark-field camera 8, the second bright-field camera 9, and the second dark-field camera 10 is typically 220V±10%, 50HZ.

[0034] The lighting mechanism faces the steel belt 4 and is able to provide illumination for the shooting mechanism.

[0035] The lighting mechanism includes a first light source 5 and a second light source 6. The first light source 5 faces the steel strip 4 on the second tension roller 2, and the second light source 6 faces the steel strip 4 between the steering roller 3 and the second tension roller 2.

[0036] The illumination direction of the first light source 5 and the second light source 6 is opposite to the conveying direction of the steel belt 4. The imaging mechanism uses the illumination of the first light source 5 and the second light source 6 to photograph the surface of the steel belt 4.

[0037] The angle between the first bright-field camera 7 and the first light source 5 is 10°-20°; the angle between the first dark-field camera 8 and the second light source 6 is 60°-80°.

[0038] The surface inspection device also includes a roller 12, which is located below the second camera unit and is capable of supporting the steel strip 4.

[0039] The idler roller 12 can support the steel coil, ensuring the stability of the plate surface at the inspection position during inspection.

[0040] The surface inspection device also includes an encoder 13, which is mounted on the second tension roller 2 and is capable of calculating the transport length of the steel coil.

[0041] The encoder 13 calculates the accurate length of the steel strip and the length corresponding to the defect by measuring the rotation cycle of the tension roller.

[0042] This detection device also includes a host computer, which is connected to the imaging mechanism and is used to receive images of the steel strip captured by the imaging mechanism and determine whether the steel strip has defects. The determination method can be existing technology, and this embodiment does not limit it. For example, the real-time captured image of the steel strip can be compared with a preset steel strip defect image template. If the two are similar, the steel strip corresponding to the image is determined to be defective.

[0043] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: This utility model realizes automatic detection of steel strip defects, improving the accuracy of steel strip detection. At the same time, it reduces the operational risks during detection.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A surface defect detection device for cold-rolled cold-pickled steel strip, characterized in that, Tension roller group and guide roller, the steel strip passes through the guide roller and tension roller group in sequence during transportation; A camera mechanism is positioned facing the steel belt and is capable of capturing images of the steel belt during transportation. A lighting mechanism facing the steel strip, the lighting mechanism being able to provide illumination to the shooting mechanism.

2. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 1, characterized in that, The tension roller group includes a first tension roller and a second tension roller. The first tension roller is located between the second tension roller and the steering roller. The steel strip passes through the first tension roller and the second tension roller in sequence during transportation.

3. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 2, characterized in that, The shooting mechanism includes a first camera unit and a second camera unit. The first camera unit is capable of shooting one side of the steel strip, and the second camera unit is capable of shooting the other side of the steel strip.

4. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 3, characterized in that, The first camera unit faces the steel strip on the second tension roller, and the second camera unit faces the steel strip between the steering roller and the second tension roller.

5. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 3, characterized in that, The lighting mechanism includes a first light source and a second light source, the first light source being directed toward the steel strip on the second tension roller, and the second light source being directed toward the steel strip between the steering roller and the second tension roller.

6. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 5, characterized in that, The first camera unit includes a first bright-field camera and a first dark-field camera, and the second camera unit includes a second bright-field camera and a second dark-field camera. The first bright-field camera and the first dark-field camera are both oriented towards the illumination point of the first light source on the steel strip, and the second bright-field camera and the second dark-field camera are both oriented towards the illumination point of the second light source on the steel strip.

7. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 6, characterized in that, The angle between the first bright-field camera and the first light source is 10°-20°; the angle between the first dark-field camera and the first light source is 60°-80°.

8. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 3, characterized in that, The surface inspection device also includes multiple belt breakage protection frames, which are respectively disposed between the second tension roller and the first camera unit, between the first tension roller and the second camera unit, and between the first camera unit and the steering roller.

9. The surface defect detection device for cold-rolled cold-pickled steel strip according to claim 3, characterized in that, The surface inspection device also includes a support roller located below the second camera unit, which is capable of supporting the steel strip.

10. A surface defect detection device for cold-rolled cold-pickled steel strip according to claim 3, characterized in that, The surface inspection device also includes an encoder mounted on the second tension roller, which is capable of calculating the transport length of the steel strip.

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