Measuring tool for silicon steel strip shape grading

Abstract

The utility model belongs to the technical field of surface detection, and particularly relates to a measuring tool for grading silicon steel strip shapes. The measuring tool for grading the strip shape of the silicon steel strip comprises a silicon steel strip tensioning mechanism used for tensioning the silicon steel strip; the incident light source assembly comprises an incident light source bracket and an incident light source; the incident light source adjusting assembly comprises an adjusting support, an angle adjusting shaft and a reflecting mirror, and the reflecting mirror is used for reflecting laser emitted by the incident light source to the surface of the silicon steel strip; and the detection light source assembly comprises a detection light source support and a detection light source, and laser emitted by the detection light source vertically irradiates the surface of the silicon steel strip. According to the principle that laser rays at different angles are irradiated on the surface of a silicon steel strip, and the laser rays at plate shape defect parts are deformed, the grading can be quickly and accurately carried out, and the cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of surface detection, and particularly relates to a measuring tool for classifying the shape of silicon steel strips. Background Art

[0002] The shape of silicon steel is one of the important indicators for evaluating product quality. For example, for grain-oriented silicon steel, after final stretcher leveling annealing in the production process, there are still some shape defects that cannot be eliminated on the surface, such as edge waves, center waves, horseshoe marks, etc. Some of these shape defects are relatively minor, and some are relatively serious. It is necessary to perform on-line classification according to the severity of the defects for subsequent classification use or treatment.

[0003] Most of the mature on-line shape detection systems on the market currently come from the field of rolling shape control. Generally, high-precision cameras and advanced automated processing systems need to be equipped, and the cost for the shape detection process of grain-oriented silicon steel sheets is relatively high. To reduce costs, enterprises generally use manual inspection methods to evaluate the defect levels. Since it is not easy to observe shape defects with the naked eye, the error in level evaluation is relatively large.

[0004] Therefore, it is necessary to develop a measuring tool with a simple structure and low cost for quickly realizing the shape classification of silicon steel strips. Summary of the Utility Model

[0005] The utility model aims to solve the above problems, and provides a measuring tool for classifying the shape of silicon steel strips. By using the principle that the laser line at different angles is irradiated on the surface of the silicon steel strip and the laser line deforms at the shape defect part, it can quickly and accurately perform classification, and the cost is low.

[0006] According to the technical solution of the utility model, the measuring tool for classifying the shape of silicon steel strips includes:

[0007] A silicon steel strip tensioning mechanism for tensioning the silicon steel strip, including two tensioning members with the same horizontal height;

[0008] An incident light source assembly, including an incident light source support and an incident light source installed on the incident light source support;

[0009] An incident light source adjustment assembly, including an adjustment support, an angle adjustment shaft and a reflector; the angle adjustment shaft is horizontally installed on the height adjustment block, and the reflector is installed on the angle adjustment shaft for reflecting the laser emitted by the incident light source onto the surface of the silicon steel strip;

[0010] A detection light source assembly, including a detection light source support and a detection light source installed on the detection light source support, and the laser emitted by the detection light source is vertically irradiated onto the surface of the silicon steel strip.

[0011] Further, an adjusting clip is provided on the incident light source bracket. The adjusting clip is rotatably mounted on the incident light source bracket and fixed by a fixing member. The incident light source is mounted on the adjusting clip.

[0012] Further, the adjustment bracket includes two support rods respectively located on both sides of the silicon steel strip. Height adjustment blocks are mounted on the support rods and are marked with height scales. Both ends of the angle adjustment shaft are rotatably mounted on the height adjustment blocks and fixed by angle fixing members.

[0013] Further, the height adjustment blocks are marked with angle scales. Both ends of the angle adjustment shaft pass through the height adjustment blocks and are provided with handles. Arrows pointing to the angle scales are provided on the handles.

[0014] Further, the center line of the reflector coincides with the axis of the angle adjustment shaft. Taking the center line as the demarcation line, the surface of the reflector on the side close to the incident light source is a smooth surface, and the surface of the reflector on the side far from the incident light source is a frosted surface.

[0015] Further, the included angle between the laser emitted by the incident light source and the surface of the silicon steel strip after being reflected by the reflector is 5 - 30°.

[0016] Further, the detection light source bracket includes two frame structures respectively located on both sides of the silicon steel strip. A slide rail is provided at the top of the frame structure, and the slide rail is horizontally arranged along the conveying direction of the silicon steel strip;

[0017] The detection light source is a line emission light source and is slidably mounted between the slide rails.

[0018] Further, a measuring rod is provided at the bottom of the detection light source bracket. The measuring rod is horizontally arranged along the conveying direction of the silicon steel strip, and the measuring rod is marked with position scales.

[0019] Further, the detection light source assembly further includes a perpendicularity detection device for detecting the perpendicularity of the laser emitted by the detection light source.

[0020] Further, the perpendicularity detection device is a detection light source reflector, which is arranged below the silicon steel strip and is located in the irradiation area of the detection light source.

[0021] The technical solution of the present utility model has the following advantages compared with the prior art: The measuring tool of the present utility model has a simple structure and only uses a limited linear laser light source to emit lasers at different angles, which intersect with the deformed area on the surface of the grain-oriented silicon steel sheet, resulting in different degrees of front and rear deformation, so as to accurately grade the shape of the existing silicon steel strip, improving the accuracy of grading and the detection efficiency; By using a reflector to reflect the laser emitted by the incident light source, the purpose of small-angle irradiation can be achieved in a limited space, further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the measuring tool of the present utility model.

[0023] Figure 2 is Figure 1 An enlarged view of the structure at A in

[0024] Figure 3 It is a front view of the measuring tool of the present utility model.

[0025] Figure 4 is Figure 3 An enlarged view of the structure at B in

[0026] Figure 5 It is a top view of the measuring tool of the present utility model.

[0027] Figure 6 It is a schematic diagram of the light emitted by the incident light source of the present utility model being reflected by the reflector.

[0028] Figure 7 It is a schematic diagram of the measurement and calculation during the use of the measuring tool of the present utility model.

[0029] Description of the reference numerals: 100 - Silicon steel strip tensioning mechanism, 110 - Tensioning member, 200 - Incident light source assembly, 210 - Incident light source bracket, 211 - Vertical rod, 212 - Horizontal rod, 220 - Incident light source, 230 - Adjusting clip, 240 - Fixing member, 300 - Incident light source adjustment assembly, 310 - Adjustment bracket, 311 - Support rod, 312 - Height scale, 320 - Angle adjustment shaft, 321 - Handle, 322 - Arrow, 330 - Reflector, 331 - Center line, 340 - Height adjustment block, 341 - Angle scale, 350 - Angle fixing member, 360 - Positioning member, 400 - Detection light source assembly, 410 - Detection light source bracket, 411 - Slide rail, 412 - Measuring rod, 413 - Position scale, 414 - Link rod, 420 - Detection light source, 430 - Verticality detection device, 500 - Tensioned silicon steel strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0031] The present invention discloses a measuring tool for classifying the shape of silicon steel strips. By means of a tensioning mechanism, an appropriate tension is applied to the silicon steel strip to reduce the overall jitter on the surface of the silicon steel strip during operation. Two or more laser emitters are used. Taking two as an example, one of the laser emitters emits laser at an angle of 90° (irradiating the surface of the silicon steel strip perpendicular to the plate surface), and the laser straight line is perpendicular to the running direction of the silicon steel strip; the laser emitted by the other laser emitter irradiates the plate surface of the silicon steel strip at a certain angle; according to the defect grade standard of the silicon steel strip, by calculating and adjusting the height and angle of the laser emitter light source, the lasers emitted by the two laser emitters are made parallel, and parallel laser lines representing the grade determination of the silicon steel strip are formed on the surface of the silicon steel strip. During the operation of the silicon steel strip, when the defective part passes through the parallel laser lines, the vertical laser line does not bend forward and backward, and the inclined laser line bends forward and backward. When the bending deformation degree of the inclined laser line intersects with the vertical laser line, it represents that the deformation degree of the steel strip has reached the grade standard. It is also possible to set multiple laser emitters to correspond to different grades to evaluate the shape of the steel strip at multiple grades.

[0032] As Figure 1 、 3 As shown in FIGS. 5, the measuring tool of the present invention includes a silicon steel strip tensioning mechanism 100, an incident light source assembly 200, an incident light source adjustment assembly 300, and a detection light source assembly 400.

[0033] Among them, the silicon steel strip tensioning mechanism 100 is used to tension the silicon steel strip 500 and includes two tensioning members 110 with the same horizontal height. Specifically, the tensioning member 110 can adopt a tensioning wheel, which is arranged between the transmission wheels of the silicon steel strip 500, or directly serves as the transmission wheel of the silicon steel strip 500. The tension of the tensioning member 110 is set to 300 - 1000 Kgf to ensure that the silicon steel strip 500 is tensioned during stable operation.

[0034] A detection area is formed between the two tensioning members 110. Preferably, the incident light source assembly 200, the incident light source adjustment assembly 300, and the detection light source assembly 400 are all arranged in the detection area. It can be imagined that due to the influence of space layout and actual site, some components (other components except the detection light source assembly 400) can be arranged outside the detection area.

[0035] The incident light source assembly 200 includes an incident light source support 210 and an incident light source 220. The incident light source 220 is installed on the incident light source support 210 and is generally a laser linear light source (laser emitter), which can emit linear laser.

[0036] Preferably, the angle of the incident light source 220 can be adjusted. In one embodiment, the incident light source bracket 210 includes vertical rods 211 disposed on both sides of the silicon steel strip 500 and a cross bar 212 connected between the tops of the vertical rods 211. An adjusting clip 230 is provided in the middle of the cross bar 212, and the incident light source 220 is installed on the adjusting clip 230. The adjusting clip 230 can rotate around the cross bar 212, thereby driving the incident light source 220 to rotate to adjust the angle of the incident light source 101; when the angle of the incident light source 220 is adjusted to the target position, the adjusting clip 230 can be fixed by a fixing member 240, and further the angle of the incident light source 220 is fixed. Specifically, the fixing member 240 can adopt a fixing bolt, and the fixing of the adjusting clip 230 is achieved by adjusting the clamping angle on the adjusting clip 230.

[0037] The incident light source adjustment assembly 300 includes an adjustment bracket 310, an angle adjustment shaft 320, and a reflecting mirror 330. Among them, the angle adjustment shaft 320 is horizontally installed on the adjustment bracket 310, and the reflecting mirror 330 is installed on the angle adjustment shaft 320 for reflecting the laser emitted by the incident light source 220 onto the surface of the silicon steel strip 500.

[0038] Preferably, the adjustment bracket 310 includes two support rods 311 respectively located on both sides of the silicon steel strip 500. A height adjustment block 340 is installed on the support rod 311, and the height adjustment block 340 can slide up and down along the support rod 311 to drive the angle adjustment shaft 320 to move up and down. After the height adjustment block 340 is adjusted, it is fixed by a positioning member 360 ( Figure 2 ), and the positioning member 360 can adopt a locking nut. A height scale 312 is also engraved on the support rod 311 for reading the height data of the height adjustment block 340.

[0039] Both ends of the angle adjustment shaft 320 are rotatably installed on the height adjustment block 340 and fixed by an angle fixing member 350, and the angle fixing member 350 can adopt a fixing nut. As Figure 4 shown, in one embodiment, both ends of the angle adjustment shaft 320 pass through the height adjustment block 340 and are provided with handles 321 for adjusting the angle of the angle adjustment shaft 320. An arrow 322 is provided on the handle 321, and correspondingly, an angle scale 341 is engraved on the height adjustment block 340, so that the angle data of the angle adjustment shaft 320 can be quickly read.

[0040] Since the light emitted by the incident light source 220 has a certain width, there is generally a phenomenon of blurring at both sides, which will lead to a reduction in detection accuracy. To avoid this phenomenon, the reflecting mirror 330 can adopt a combination of a frosted surface and a smooth surface.

[0041] Specifically, the center line 331 of the mirror 330 coincides with the axis of the angle adjustment shaft 320. Taking the center line 331 (axis) as the dividing line, the surface of the mirror 330 on the side close to the incident light source 220 is a smooth surface, which can totally reflect the light emitted by the incident light source 220. The surface of the mirror 330 on the side far from the incident light source 220 is a frosted surface, which diffusely reflects the light emitted by the incident light source 220. As Figure 6 shown, since the center line 331 is a straight line, that is to say, the boundary between the smooth surface and the frosted surface of the mirror 330 is a straight line. When the light emitted by the incident light source 220 passes through the mirror 330, the light on the frosted side is filtered, and a clear light source boundary can be obtained on the near light source side when irradiating on the silicon steel strip 500.

[0042] It can be imagined that the positions of the frosted surface and the smooth surface can be adjusted. At this time, the position of the detection light source 420 is correspondingly adjusted to ensure that the clear boundary is close to the side where the light emitted by the detection light source 420 is located.

[0043] Preferably, the angle between the laser emitted by the incident light source 220 and the surface of the silicon steel strip 500 after being reflected by the mirror 330 is 5 - 30°, that is, the incident angle is 60 - 85°, so as to further improve the detection accuracy and be able to detect defects with a wave height of less than 3 mm.

[0044] The detection light source assembly 400 includes a detection light source bracket 410 and a detection light source 420. The detection light source 420 is installed on the detection light source bracket 410, and the laser emitted by it vertically irradiates the surface of the silicon steel strip 500.

[0045] Specifically, the detection light source bracket 410 includes two frame structures respectively located on both sides of the silicon steel strip 500, and this frame structure can be an integral structure with the support rod 311 of the adjustment bracket 310. A slide rail 411 is provided at the top of the frame structure, and the slide rail 411 is horizontally arranged along the conveying direction of the silicon steel strip 500. The measured light source 420 is a line emission light source and is installed between the slide rails 411 and can slide back and forth along the direction of the slide rail 411 (the conveying direction of the silicon steel strip 500).

[0046] Preferably, a measuring rod 412 is provided at the bottom of the detection light source bracket 410 (frame structure). The measuring rod 412 is horizontally arranged along the conveying direction of the silicon steel strip 500, and position scales 413 are engraved on the measuring rod 412 for reading the position information of the laser emitted by the detection light source 420. The measuring rod 412 and the slide rail 411 can be connected by a connecting rod 414.

[0047] Preferably, the detection light source assembly 400 further includes a perpendicularity detection device 430 for detecting the perpendicularity of the laser emitted by the detection light source 420. The perpendicularity detection device 430 can be a detection light source reflector, which is arranged below the silicon steel strip 500 and located in the irradiation area of the detection light source 420. Specifically, the detection light source reflector can be arranged in the area corresponding to the movable area of the detection light source 420, or the position of the detection light source reflector can be movable and adjusted according to the position of the detection light source 420.

[0048] When the measuring tool of the present utility model is in use, turn on the incident light source 220, rotate the angle of the adjustment clamp 230, and adjust the height of the angle adjustment shaft 320 so that the linear light emitted by the incident light source 220 irradiates the mirror surface of the reflector 330 (including the smooth surface and the frosted surface); adjust the angle of the incident light source by adjusting the handle 321 so that the light is reflected and irradiates the silicon steel strip 500, and make the final incident angle between 60-85°.

[0049] As Figure 7 shown, the height h0 of the angle adjustment shaft 320 can be read through the height scale line 312, and the horizontal distance l0 between the incident light and the angle adjustment shaft 320 is measured by the position scale 413.

[0050] Turn on the detection line light source 420, and according to the standard height z of the grade defect of the silicon steel strip a , calculate the distance l between the measuring light and the incident light through the following formula 1：

[0051] .

[0052] Adjust the emission angle of the detection line light source 420 to be perpendicular to the plate surface of the silicon steel strip, so that the two light rays are parallel and the distance between them is l1. Run the silicon steel strip, and the inspector judges whether the deformation of the steel strip exceeds the corresponding standard according to whether the standard height light ray coincides with the front and back curved light rays.

[0053] When multi-level evaluation is required, multiple measuring light rays or multiple incident light rays can be set, and the distance between them can be controlled.

[0054] It can be imagined that the measuring tool of the present utility model can not only be used for the shape grading of silicon steel strips, but also be applicable to other structures that require surface defect detection.

[0055] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of this utility model creation.

Claims

1. A measuring tool for classifying the shape of silicon steel strips, characterized in that, Including, A silicon steel strip tensioning mechanism (100) for tensioning a silicon steel strip (500), comprising two tensioning members (110) at the same horizontal height; An incident light source assembly (200), comprising an incident light source bracket (210) and an incident light source (220) mounted on the incident light source bracket (210); An incident light source adjustment assembly (300), comprising an adjustment bracket (310), an angle adjustment shaft (320) and a reflector (330); the angle adjustment shaft (320) is horizontally mounted on the adjustment bracket (310), and the reflector (330) is mounted on the angle adjustment shaft (320) for reflecting the laser emitted by the incident light source (220) onto the surface of the silicon steel strip (500); A detection light source assembly (400), comprising a detection light source bracket (410) and a detection light source (420) mounted on the detection light source bracket (410), and the laser emitted by the detection light source (420) vertically irradiates the surface of the silicon steel strip (500).

2. The measuring tool for the shape classification of silicon steel strips according to claim 1, characterized in that An adjustment clip (230) is provided on the incident light source bracket (210), the adjustment clip (230) is rotatably mounted on the incident light source bracket (210) and fixed by a fixing member (240), and the incident light source (220) is mounted on the adjustment clip (230).

3. The measuring tool for the shape grading of silicon steel strip according to claim 1, characterized in that, The adjustment bracket (310) comprises two support rods (311) respectively located on both sides of the silicon steel strip (500), a height adjustment block (340) is mounted on the support rods (311), and a height scale (312) is engraved; both ends of the angle adjustment shaft (320) are rotatably mounted on the height adjustment block (340) and fixed by an angle fixing member (350).

4. The measuring tool for silicon steel strip shape classification according to claim 3, characterized in that, An angle scale (341) is engraved on the height adjustment block (340); both ends of the angle adjustment shaft (320) pass through the height adjustment block (340), and handles (321) are mounted; an arrow (322) pointing to the angle scale (341) is provided on the handle (321).

5. The measuring tool for the shape grading of silicon steel strips according to claim 1, characterized in that, The center line (331) of the reflector (330) coincides with the axis of the angle adjustment shaft (320); taking the center line as the demarcation line, the surface of the reflector (330) on the side close to the incident light source (220) is a smooth surface, and the surface of the reflector (330) on the side far from the incident light source (220) is a frosted surface.

6. The measuring tool for the shape grading of silicon steel strips according to claim 1, characterized in that, The included angle between the laser reflected by the reflector (330) from the incident light source (220) and the surface of the silicon steel strip (500) is 5 - 30°.

7. The measuring tool for shape grading of silicon steel strip according to claim 1, characterized in that, The detection light source bracket (410) comprises two frame structures respectively located on both sides of the silicon steel strip (500), and a slide rail (411) is provided at the top of the frame structure, and the slide rail (411) is horizontally arranged along the conveying direction of the silicon steel strip (500); The detection light source (420) is a line emission light source and is slidably mounted between the slide rails (411).

8. The measuring tool for shape grading of silicon steel strip according to claim 1 or 7, characterized in that, A measuring rod (412) is provided at the bottom of the detection light source bracket (410). The measuring rod (412) is horizontally arranged along the conveying direction of the silicon steel strip (500), and a position scale (413) is engraved on the measuring rod (412).

9. The measuring tool for shape grading of silicon steel strip according to claim 1, characterized in that, The detection light source assembly (400) further includes a perpendicularity detection device (430) for detecting the perpendicularity of the laser emitted by the detection light source (420).

10. The measuring tool for shape classification of silicon steel strip according to claim 9, characterized in that, The perpendicularity detection device (430) is a detection light source reflector, which is arranged below the silicon steel strip (500) and located in the irradiation area of the detection light source (420).

Images