Cold-rolled sheet surface defect detection equipment

Abstract

The invention relates to the technical field of cold-rolled sheet surface defect detection, in particular to cold-rolled sheet surface defect detection equipment which comprises a conveying unit, a cleaning unit and a detection unit.The cold-rolled sheet surface defect detection equipment ensures that an upper cleaning part is tightly attached to the upper surface of a cold-rolled sheet through cooperation of a control part, an upper detection part, a linkage part, a supporting part and a rectangular linkage plate; the deformed supporting part supports the cold-rolled sheet on the lower detection part, so that the cold-rolled sheet is always in a horizontal state, and the cold-rolled sheet is prevented from being bent due to lack of support between the lower detection part and the upper detection part when the left end of the cold-rolled sheet is not supported by the middle conveying roller in the rightward movement process; the upper surface and the lower surface of the cold-rolled sheet are cleaned through the lower cleaning part and the upper cleaning part, impurities and greasy dirt on the surface of the cold-rolled sheet are prevented from affecting the detection result, the cleaning roller can be rapidly limited and replaced through the threaded insertion column according to needs, the cleaning effect of the cleaning roller and the cold-rolled sheet is guaranteed, and therefore the accuracy of the detection result is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cold-rolled plate surface defect detection, in particular to a cold-rolled plate surface defect detection device. Background Art

[0002] Cold-rolled steel is made from hot-rolled coils and rolled at room temperature below the recrystallization temperature. It features high stamping performance, no aging, and a low yield point. Therefore, cold-rolled steel has a wide range of applications, primarily in the automotive, printed iron drum, and construction industries. It is also the optimal material for producing organically coated steel sheets. To ensure product quality, improve production efficiency, and ensure safe production, surface defect detection of cold-rolled steel is necessary.

[0003] Traditional cold-rolled sheet surface defect detection generally involves installing image sensors on the upper and lower sides of the cold-rolled sheet, directly inspecting the cold-rolled sheet, and conveying it through traditional conveyor rollers. However, lubricating oil or coolant is usually used in the production process of cold-rolled sheet, and oil stains may remain on the surface. Oil stains and impurities will mask the actual surface defects. During the inspection process, mechanical contact or friction may cause metal debris to be generated on the surface of the cold-rolled sheet, all of which will reduce the accuracy of the inspection. For thinner cold-rolled sheet, during the transportation process, the last conveyed part is prone to bending due to the contact between the bottom and the conveyor roller, thereby blocking the light emitted by the image sensor and even changing the shape of the range where the light shines on the cold-rolled sheet, affecting the inspection results and making it impossible to obtain accurate inspection results. Summary of the Invention

[0004] In view of the above-mentioned problems, the present invention provides a cold-rolled sheet surface defect detection device to address the technical issues in related art, such as impurities and oil stains on the cold-rolled sheet surface being detected as defects, and bending at the ends of thin cold-rolled sheets due to lack of support, both of which affect the detection results. To achieve the above-mentioned objectives, the present invention provides the following technical solutions.

[0005] The cold-rolled plate surface defect detection equipment provided by the embodiment of the application comprises a conveying unit, a cleaning unit and a detection unit, the cleaning unit and the detection unit are respectively arranged on the left and right sides of the conveying unit, the cleaning unit is used for cleaning the upper and lower surfaces of the cold-rolled plate, and the detection unit is used for detecting the defects on the upper and lower surfaces of the cold-rolled plate; the conveying unit comprises a support platform, a plurality of conveying rollers are uniformly and rotationally connected to the support platform from left to right along a line, and a driving part is arranged at the front ends of the conveying rollers; the cleaning unit comprises a lower cleaning part, the lower cleaning part is arranged between the two conveying rollers on the left side of the support platform, an auxiliary lower part is arranged on the lower cleaning part, guide plates are fixedly installed on the upper end of the support platform in a front-rear symmetrical manner, an upper cleaning part is arranged at the opposite ends of the guide plates, a rectangular linkage plate is arranged between the upper cleaning part and the detection unit, and an auxiliary upper part is arranged on the upper end of the rectangular linkage plate; the detection unit comprises a lower detection part, the lower detection part is fixedly installed between the two conveying rollers on the right side of the support platform, support parts are arranged on the left and right sides of the lower detection part on the support platform, linkage parts are arranged on the support parts in a front-rear symmetrical manner, limit plates are fixedly installed on the upper end of the support platform in a front-rear symmetrical manner, an upper detection part is slidably connected to the opposite ends of the limit plates, and a control part is arranged between the lower detection part and the upper detection part.

[0006] According to the embodiment of the application, the driving part comprises a belt pulley one, the front ends of the conveying rollers are fixedly installed with the belt pulley one, an anti-interference wheel is rotationally connected to the support platform between the two conveying rollers on the right side of the front end of the support platform, all the belt pulleys one are transmissionally connected through a transmission belt one, the anti-interference wheel is located on the upper side of the transmission belt one, the transmission belt one is prevented from contacting the square guide rod and interfering with the rotation of the transmission belt one, and a scraping plate is fixedly installed on the right side of the conveying roller on the leftmost side of the support platform.

[0007] According to the embodiment of the application, the lower cleaning part comprises a rectangular frame plate, the rectangular frame plate is fixedly installed between the two conveying rollers on the left side of the support platform, rotation groups are arranged in the rectangular frame plate in a left-right symmetrical manner, each group of the rotation groups is composed of front-rear symmetrical round head plates, the middle parts of the round head plates are threadedly connected with the rectangular frame plate, the round head plates gradually incline downward from left to right, cleaning rollers are arranged on the left upper side and the right lower side between the front-rear corresponding round head plates, circular insertion grooves are formed in the front and rear ends of the cleaning rollers, threaded insertion columns are threadedly connected with the left upper side and the right lower side of the round head plates, the threaded insertion columns are matched with the circular insertion grooves, a rectangular plate is fixedly installed on the auxiliary lower part, extrusion plates are fixedly installed on the four corners of the upper end of the rectangular plate, and the extrusion plates are slidably connected with the corresponding round head plates; the impurities on the surface of the cleaning roller are scraped off by the scraping plate, the service life of the cleaning roller is prolonged, and the impurities on the surface of the cleaning roller are prevented from adhering to the surface of the cold-rolled plate again.

[0008] According to an embodiment of the present invention, the lower auxiliary part includes a right-angle bracket, a scraper plate is fixedly installed between the front and rear corresponding round head plates and on the lower side of the cleaning roller located on the left side, a right-angle bracket is fixedly installed at the lower end of the rear side of the support platform, a distance control cylinder is fixedly installed at the upper end of the horizontal section of the right-angle bracket, and a rectangular plate is provided at the telescopic end of the distance control cylinder.

[0009] According to an embodiment of the present invention, the lower extrusion part includes a rectangular plate, a rectangular plate is fixedly installed on one telescopic end of the distance control cylinder, and extrusion plates are fixedly installed on the four corners of the upper end of the rectangular plate. The extrusion plate is slidably connected to the corresponding round head plate. The mechanism of the upper extrusion part is the same as that of the lower extrusion part, and only the parts are arranged in a mirror image.

[0010] According to an embodiment of the present invention, the structure of the upper cleaning part is the same as that of the lower cleaning part, with only the parts arranged in a mirror image. A scraper box is fixedly installed between the front and rear corresponding round head plates on the upper cleaning part. The scraper box contacts the left end of the cleaning roller on the left, and the opposite ends of the guide plate are slidably connected to the rectangular frame plate of the upper cleaning part.

[0011] According to an embodiment of the present invention, the upper auxiliary part includes a second right-angle bracket, the left end of the upper image sensor and the rectangular frame plate on the upper cleaning part are fixedly connected through a rectangular linkage plate, the upper end of the rectangular linkage plate is fixedly installed with a second right-angle bracket, the lower end of the horizontal section of the second right-angle bracket is fixedly installed with a second distance control cylinder, and the telescopic end of the second distance control cylinder is fixedly connected to the rectangular plate in the upper extrusion part.

[0012] According to an embodiment of the present invention, the support part includes an arc plate, and an arc plate is fixedly installed on the support platform and on both sides of the lower fixed shell. The middle part of the arc plate is connected to a movable plate for sliding left and right toward one side of the lower fixed shell. A plurality of connecting springs 1 are fixedly connected between the movable plate and the arc plate, and the connecting springs 1 are evenly arranged linearly front and back. The movable plate is connected to the support plate for sliding left and right toward one side of the lower fixed shell, and a plurality of connecting springs 2 are fixedly connected between the support plate and the movable plate, and the connecting springs 2 are evenly arranged linearly front and back. The front and rear ends of the support plate are connected to the support platform for sliding left and right.

[0013] According to an embodiment of the present invention, the linkage part includes a square guide rod, and the support platform is symmetrically fixed with square guide rods that pass through the support platform. The square guide rods are connected to the square guide rods for forward and backward sliding. An anti-slip block is fixedly installed at one end of the square guide rod away from the support platform, and an inclined linkage rod is hinged between the support plate and the square block.

[0014] According to the embodiment of the present application, the control part comprises threaded rods, the image sensor is rotationally connected with threaded rods on both front and back sides, the threaded rods on both front and back sides are threadedly connected with corresponding sliding plates respectively, the upper ends of the threaded rods are fixedly installed with belt pulleys II, the two belt pulleys II are drivingly connected through a transmission belt II, the upper end of the threaded rod on the front side is fixedly installed with a rotating handle, and the sliding plates are jointly hinged with inclined plates between corresponding square sleeve blocks.

[0015] According to the embodiment of the present application, the lower detection part comprises an image sensor, square guide rods on both front and back sides are jointly fixedly installed with the image sensor, a charge integrator, a digital-to-analog converter, a digital signal processor and an image output end are fixedly installed on the support platform, the image sensor is electrically connected with the charge integrator, the charge integrator is electrically connected with the digital-to-analog converter, the digital-to-analog converter is electrically connected with the digital signal processor, the digital signal processor is electrically connected with the image output end, and the upper end of the image sensor is fixedly installed with an LED lamp strip.

[0016] From the above technical solutions, the present application has the following advantages:

[0017] 1、In the present application, through the cooperation of the control part, the upper detection part, the linkage part, the support part and the rectangular linkage plate, the upper cleaning part is ensured to be tightly attached to the upper surface of the cold-rolled plate, the deformed support part supports the cold-rolled plate on the lower detection part, so that the cold-rolled plate is always in a horizontal state, preventing the cold-rolled plate from bending between the lower detection part and the upper detection part due to lack of support when the left end of the cold-rolled plate is not supported by the middle conveying roller during the right movement of the cold-rolled plate, the upper and lower surfaces of the cold-rolled plate are cleaned by the lower and upper cleaning parts, preventing impurities and dirt on the surface of the cold-rolled plate from affecting the detection results, and the cleaning roller can be quickly positioned and replaced through the threaded insertion column as needed, ensuring the cleaning effect of the cleaning roller on the cold-rolled plate and thus ensuring the accuracy of the detection results.

[0018] In addition to the technical problems solved by the above-described embodiments of the present application, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, the other technical problems solved by the cold-rolled plate surface defect detection equipment based on the embodiments of the present application, the other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of a main-view stereoscopic structure provided according to an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of the main stereoscopic structure of the present invention without the support platform is shown.

[0022] Figure 3 A schematic diagram of the main plane structure of the present invention without the support platform is shown.

[0023] Figure 4 It shows a schematic diagram of the main plane structure of the present invention.

[0024] Figure 5 A top cross-sectional plan view of the threaded stud and cleaning roller is shown.

[0025] The above drawings include the following reference numerals:

[0026] 1. Conveying unit; 11. Support platform; 12. Conveying roller; 13. Driving unit; 131. Pulley 1; 132. Anti-interference pulley; 133. Transmission belt 1; 134. Scraping plate; 2. Cleaning unit; 21. Lower cleaning unit; 211. Rectangular frame plate; 212. Round head plate; 213. Cleaning roller; 214. Threaded plug; 215. Rectangular plate; 216. Extrusion plate; 22. Lower auxiliary unit; 221. Right-angle bracket 1; 222. Scraping plate; 223. Distance control cylinder 1; 23. Guide plate; 24. Upper cleaning unit; 241. Scraping box; 25. Rectangular linkage plate; 26. Upper auxiliary unit; 261. Straight Angle bracket 2; 262, distance control cylinder 2; 3, detection unit; 31, lower detection part; 311, image sensor; 312, LED light strip; 32, support part; 321, arc plate; 322, movable plate; 323, connecting spring 1; 324, support plate; 325, connecting spring 2; 33, linkage part; 331, square guide rod; 332, square sleeve block; 333, anti-slip block; 334, tilt linkage rod; 34, limit plate; 35, upper detection part; 36, control part; 361, threaded rod; 362, pulley 2; 363, transmission belt 2; 364, turning handle; 365, tilt plate. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] See Figure 1 and Figure 4 , a cold-rolled plate surface defect detection equipment, including a conveying unit 1, a cleaning unit 2 and a detection unit 3, the cleaning unit 2 and the detection unit 3 are respectively arranged on the left and right sides of the conveying unit 1, the cleaning unit 2 cleans the upper and lower surfaces of the cold-rolled plate, and the detection unit 3 detects defects on the upper and lower surfaces of the cold-rolled plate; the conveying unit 1 includes a supporting platform 11, and a plurality of conveying rollers 12 are connected to the supporting platform 11 along a linear uniform rotation from left to right, and a driving part 13 is commonly provided at the front end of the conveying rollers 12; the cleaning unit 2 includes a lower cleaning part 21, and a lower cleaning part 21 is provided between the two conveying rollers 12 on the left side of the supporting platform 11, and a lower auxiliary part 22 is provided on the lower cleaning part 21, and the upper end of the support platform 11 is symmetrically fixed front and back. There is a guide plate 23, and the opposite ends of the guide plate 23 are commonly provided with an upper cleaning part 24, and a rectangular linkage plate 25 is commonly provided between the upper cleaning part 24 and the detection unit 3, and an upper auxiliary part 26 is provided on the upper end of the rectangular linkage plate 25; the detection unit 3 includes a lower detection part 31, and the lower detection part 31 is fixedly installed on the support platform 11 and between the two conveying rollers 12 on the right side, and support parts 32 are provided on the support platform 11 and on the left and right sides of the lower detection part 31, and the support part 32 is symmetrically provided with a linkage part 33, and a limit plate 34 is fixedly installed on the upper end of the support platform 11 symmetrically, and the opposite ends of the limit plate 34 are commonly connected to the upper detection part 35 for sliding up and down, and a control part 36 is commonly provided between the lower detection part 31 and the upper detection part 35.

[0029] See Figure 3 、 Figure 4 and Figure 5The lower cleaning portion 21 includes a rectangular frame plate 211, a rectangular frame plate 211 is fixedly installed between the two conveying rollers 12 on the left side of the support platform 11, and a rotating group is symmetrically arranged in the rectangular frame plate 211. Each rotating group is composed of a round head plate 212 symmetrical in front and back. The middle part of the round head plate 212 is threadedly connected to the rectangular frame plate 211. The round head plate 212 gradually tilts downward from left to right. Cleaning rollers 213 are provided on the upper left and lower right sides between the front and rear corresponding round head plates 212. The front and rear ends of the cleaning rollers 213 are provided with round The upper left and lower right sides of the round head plate 212 are both threadedly connected with threaded pins 214, and the threaded pins 214 cooperate with the circular slots. A rectangular plate 215 is fixedly installed on the lower auxiliary part 22, and the four corners of the upper end of the rectangular plate 215 are fixedly installed with extrusion plates 216. The extrusion plates 216 are slidably connected with the corresponding round head plates 212; the scraper plate 222 is used to scrape off impurities on the surface of the cleaning roller 213, thereby extending the service life of the cleaning roller 213 and preventing impurities on the surface of the cleaning roller 213 from adhering to the surface of the cold-rolled plate again.

[0030] See Figure 2 、 Figure 3 and Figure 4 The cam 324 is fixed on the support plate 321 and the support plate 325 is fixed on the support plate 322 to the support plate 324. The cam 324 is fixed on the support plate 321 to the support plate 324. The cam 324 is fixed on the support plate 322 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324. The cam 324 is fixed on the support plate 324 to the support plate 324.

[0031] See Figure 2 The linkage part 33 includes a square guide rod 331. The support platform 11 is fixedly installed with square guide rods 331 symmetrically in the front and back, which penetrate the support platform 11. The square guide rods 331 are connected to the square sleeve blocks 332 for sliding forward and backward. An anti-slip block 333 is fixedly installed at the end of the square guide rod 331 away from the support platform 11. A tilt linkage rod 334 is hinged between the support plate 324 and the square sleeve block 332.

[0032] See Figure 2 and Figure 3The lower detection part 31 comprises an image sensor 311, the image sensor 311 is fixedly installed on the square guide rods 331 on the front and back sides, and the charge integrator, the digital-to-analog converter, the digital signal processor and the image output end are fixedly installed on the support platform 11. The image sensor 311 is electrically connected with the charge integrator, the charge integrator is electrically connected with the digital-to-analog converter, the digital-to-analog converter is electrically connected with the digital signal processor, the digital signal processor is electrically connected with the image output end, and the LED lamp strip 312 is fixedly installed on the upper end of the image sensor 311. The charge integrator, the digital-to-analog converter, the digital signal processor and the image output end are prior arts and are not shown in the drawings. The upper detection part 35 comprises sliding plates, the opposite sides of the limiting plate 34 are slidably connected with the sliding plates, and the two sliding plates are fixedly connected with the image sensor 311. The LED lamp strip 312 is fixedly installed on the lower end of the image sensor 311.

[0033] Referring to Figure 2 The control part 36 comprises threaded rods 361, the image sensor 311 is rotatably connected with the threaded rods 361 on the front and back sides, the threaded rods 361 on the front and back sides are threadedly connected with the corresponding sliding plates, the upper ends of the threaded rods 361 are fixedly installed with belt pulleys two 362, the two belt pulleys two 362 are drivingly connected through a transmission belt two 363, the upper end of the threaded rod 361 on the front side is fixedly installed with a rotating handle 364, and the sliding plate and the corresponding square sleeve block 332 are hingedly connected with an inclined plate 365.

[0034] According to the thickness of the cold-rolled plate, the rotating handle 364 is rotated to drive the threaded rod 361 to rotate, so that the height of the upper detection part 35 is adjusted. Under the cooperation of the inclined plate 365 and the square sleeve block 332 and the inclined linkage rod 334, the support plates 324 are moved. According to the thickness of the cold-rolled plate, the distance between the support plates 324 is changed. Under the driving of the rectangular linkage plate 25, the upper cleaning part 24 on the upper side is synchronously moved, so that the cleaning roller 213 of the upper cleaning part 24 is tightly attached to the upper surface of the cold-rolled plate.

[0035] The cold-rolled plate located on the lower detection part 31 is supported by the support plates 324, so that the cold-rolled plate is always in a horizontal state, and the cold-rolled plate is prevented from being bent when the left end of the cold-rolled plate is not supported by the middle conveying roller 12 during the movement to the right, so that the light emitted by the lower detection part 31 is blocked or even the range shape of the light irradiated on the cold-rolled plate is changed, and the detection result is affected.

[0036] Referring to Figure 2 and Figure 3The driving part 13 includes a pulley 131, and a pulley 131 is fixedly installed at the front end of the conveying roller 12. An anti-interference wheel 132 is rotatably connected to the front end of the support platform 11 and located between the two conveying rollers 12 on the right side. All the pulleys 131 are connected through a transmission belt 133. The anti-interference wheel 132 is located on the upper side of the transmission belt 133 to prevent the transmission belt 133 from contacting the square guide rod 331 and interfering with the rotation of the transmission belt 133. A scraper plate 134 is fixedly installed on the right side of the conveying roller 12 on the leftmost side of the support platform 11; the scraper plate 134 is used to clean the surface of the conveying roller 12 that first contacts the uncleaned cold-rolled plate to prevent impurities attached to the surface of the conveying roller 12 from scratching the surface of the cold-rolled plate that needs to be inspected later, causing damage to the surface of the cold-rolled plate to be cleaned later, affecting the inspection results.

[0037] See Figure 3 The lower auxiliary part 22 includes a right-angle bracket 221, and a scraper plate 222 is fixedly installed between the front and rear corresponding round head plates 212 and on the lower side of the cleaning roller 213 on the left side. A right-angle bracket 221 is fixedly installed at the lower end of the rear side of the support platform 11, and a distance control cylinder 223 is fixedly installed at the upper end of the horizontal section of the right-angle bracket 221. A rectangular plate 215 is provided at the telescopic end of the distance control cylinder 223; the scraper plate 222 is used to scrape off impurities on the surface of the cleaning roller 213, thereby extending the service life of the cleaning roller 213 and preventing impurities on the surface of the cleaning roller 213 from adhering to the surface of the cold-rolled plate again.

[0038] See Figure 3 The structure of the upper cleaning part 24 is the same as that of the lower cleaning part 21, except that the parts are arranged in a mirror image. A scraper box 241 is fixedly installed between the front and rear corresponding round head plates 212 on the upper cleaning part 24. The scraper box 241 and the left end of the cleaning roller 213 on the left side are in contact with each other, and the opposite ends of the guide plate 23 are slidably connected to the rectangular frame plate 211 of the upper cleaning part 24; the scraper box 241 can collect the impurities on the cleaning roller 213 after scraping them, preventing the impurities from falling down to the surface of the cold-rolled plate, extending the service life of the cleaning roller 213, and preventing the impurities on the surface of the cleaning roller 213 from adhering to the surface of the cold-rolled plate again.

[0039] See Figure 3 The upper auxiliary part 26 includes a second right-angle bracket 261. The left end of the upper image sensor 311 is fixedly connected to the rectangular frame plate 211 on the upper cleaning part 24 through a rectangular linkage plate 25. The upper end of the rectangular linkage plate 25 is fixedly installed with a second right-angle bracket 261. The lower end of the horizontal section of the second right-angle bracket 261 is fixedly installed with a second distance control cylinder 262. The telescopic end of the second distance control cylinder 262 is fixedly connected to the rectangular plate 215 in the upper cleaning part 24.

[0040] At this time, the cold-rolled sheet is transported to the conveyor roller 12 by the belt conveyor, and the conveyor roller 12 is driven to rotate by an external motor. Under the cooperation of the pulley 131, the anti-interference wheel 132 and the transmission belt 133, all the conveyor rollers 12 rotate together to transport the cold-rolled sheet to the right. The upper and lower surfaces of the cold-rolled sheet are cleaned by the cleaning roller 213, and then the upper and lower surfaces of the cold-rolled sheet are detected by the image sensors 311 on the upper and lower sides. After the image sensor 311 completes the imaging of the upper and lower surfaces of the cold-rolled sheet, the charge integrator converts the charge into a voltage signal, and amplifies it through the amplifier circuit. These voltage signals are then converted into a digital-to-analog converter. The image is converted into a digital signal, and then further processed and encoded by a digital signal processor. Finally, the detected image is displayed through the image output end, so as to be compared with the standard requirements to determine whether the surface defects of the cold-rolled steel meet the standards. After a period of time, the surface of the cleaning roller 213 on the left side of the round head plate 212 becomes dirty. The cold-rolled plate on the left side has not yet entered the supporting platform 11. After the cold-rolled plate to be tested has been completely cleaned, the rectangular plate 215 is driven upward by the distance control cylinder 1 223, and the distance control cylinder 2 262 drives the rectangular plate 215 in the upper cleaning part 24 to move downward, driving the cleaning roller 213 on the right side of the round head plate 212 to move upward. The cleaning roller 213 on the left side of the round head plate 212 is removed and replaced. At this time, the cold rolled plate can be cleaned further by the cleaning roller 213 on the right side of the round head plate 212. When the cleaning roller 213 on the right side becomes dirty, the distance control cylinder 1 223 drives the upper rectangular plate 215 downward, and the distance control cylinder 262 drives the upper rectangular plate 215 upward, so that the replaced cleaning roller 213 cleans the cold rolled plate again, and then the cleaning roller 213 on the right side of the round head plate 212 is cleaned again. The cleaning roller 213 on the right side of the round head plate 212 is replaced, or after the cleaning roller 213 on the left side of the round head plate 212 is replaced, the rectangular plate 215 is immediately driven downward by the distance control cylinder 1 223, and the distance control cylinder 2 262 drives the rectangular plate 215 in the upper cleaning part 24 to move upward, so that the replaced cleaning roller 213 on the left side immediately cleans the cold rolled plate, and the cleaning roller 213 on the right side of the round head plate 212 has a shorter contact time with the cold rolled plate. After a long time, the cleaning roller 213 on the right side of the round head plate 212 becomes dirty, and the cleaning roller 213 on the right side of the round head plate 212 can be replaced in the same way. During the whole process, ensure that the cold rolled plate is always in contact with the cleaning roller 213 for cleaning.

[0041] Working principle of the present invention: Step 1: According to the thickness of the cold-rolled plate, the height of the upper detection part 35 is adjusted through the control part 36. With the cooperation of the linkage part 33, the support part 32 moves accordingly. Driven by the rectangular linkage plate 25, the upper cleaning part 24 on the upper side moves synchronously to ensure that the upper cleaning part 24 is in close contact with the upper surface of the cold-rolled plate.

[0042] Step 2: Support the cold-rolled plate on the lower detection part 31 through the deformed support part 32 to ensure that the cold-rolled plate is always in a horizontal state, and prevent the cold-rolled plate from bending between the lower detection part 31 and the upper detection part 35 due to lack of support from the conveyor roller 12 when the left end of the cold-rolled plate is not supported by the middle conveyor roller 12 during the movement to the right, thereby blocking the light emitted by the lower detection part 31 and the upper detection part 35 or even changing the range and shape of the light irradiating the cold-rolled plate, thereby affecting the detection result.

[0043] Step 3: The cold-rolled plate on the lower inspection part 31 is supported by the deformed support part 32 to ensure that the cold-rolled plate is always in a horizontal state. At this time, the cold-rolled plate is transported to the conveying roller 12 by an external belt conveyor, and the conveying roller 12 is driven to rotate by the driving part 13 to transport the cold-rolled plate to the right. The upper and lower surfaces of the cold-rolled plate are cleaned by the lower cleaning part 21 and the upper cleaning part 24, and then the upper and lower surfaces of the cold-rolled plate are inspected by the lower inspection part 31 and the upper inspection part 35, so as to compare the inspection results with the standard requirements to determine whether the surface defects of the cold-rolled steel meet the standards.

[0044] In the description of the present invention, it should be understood that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0045] Furthermore, the terms "first," "second," "number one," "number two," "one," and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being described. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, integral or sliding connections; they may refer to mechanical or electrical connections; they may refer to direct or indirect connections via an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cold-rolled sheet surface defect detection device, characterized in that , including a conveying unit, a cleaning unit and a detection unit. The cleaning unit and the detection unit are respectively arranged on the left and right sides of the conveying unit, and clean and detect the upper and lower surfaces of the cold-rolled plate; The conveying unit includes a supporting platform, on which a plurality of conveying rollers are connected and rotate uniformly from left to right along a linear line, and a driving part is commonly provided at the front ends of the conveying rollers; The cleaning unit includes a lower cleaning portion, which is provided on the support platform and between the two conveying rollers on the left side. The lower cleaning portion is provided on the lower cleaning portion. A guide plate is fixedly installed symmetrically on the upper end of the support platform. The opposite ends of the guide plates are commonly provided with an upper cleaning portion connected thereto. A rectangular linkage plate is commonly provided between the upper cleaning portion and the detection unit, and the upper auxiliary portion is provided on the upper end of the rectangular linkage plate. The detection unit includes a lower detection part, which is fixedly installed on the support platform and between the two conveying rollers on the right side, and support parts are provided on the support platform and on the left and right sides of the lower detection part. The support part is symmetrically provided with linkage parts, and a limit plate is fixedly installed symmetrically on the upper end of the support platform. The opposite ends of the limit plate are connected to the upper detection part for sliding up and down, and a control part is provided between the lower detection part and the upper detection part.

2. The cold-rolled sheet surface defect detection device according to claim 1, characterized in that: The driving part includes a pulley 1, and the front end of each conveying roller is fixedly installed with a pulley 1. The front end of the support platform is located between the two conveying rollers on the right and is rotatably connected with an anti-interference wheel. All the pulleys are connected by a transmission belt 1. The anti-interference wheel is located on the upper side of the transmission belt 1 to prevent the transmission belt 1 from contacting the square guide rod and interfering with the rotation of the transmission belt 1. A scraper plate is fixedly installed on the right side of the conveying roller located on the far left of the support platform.

3. The cold-rolled sheet surface defect detection device according to claim 1, characterized in that: The lower cleaning part includes a rectangular frame plate, a rectangular frame plate is fixedly installed on the supporting platform and between the two conveying rollers on the left side, and a rotating group is symmetrically arranged in the rectangular frame plate. Each rotating group is composed of a front-to-back symmetrical round head plate, and the middle part of the round head plate is threadedly connected to the rectangular frame plate. The round head plate gradually tilts downward from left to right, and cleaning rollers are provided on the upper left and lower right sides between the front and rear corresponding round head plates. Circular slots are provided at the front and rear ends of the cleaning rollers, and threaded pins are threadedly connected on the upper left and lower right sides of the round head plate, and the threaded pins cooperate with the circular slots. A rectangular plate is fixedly installed on the lower auxiliary part, and extrusion plates are fixedly installed on the four corners of the upper end of the rectangular plate. The extrusion plates are slidably connected to the corresponding round head plates.

4. The cold-rolled sheet surface defect detection device according to claim 3, characterized in that: The lower auxiliary part includes a right-angle bracket, a scraper plate is fixedly installed between the front and rear corresponding round head plates and on the lower side of the cleaning roller on the left side, a right-angle bracket is fixedly installed at the lower end of the rear side of the support platform, a distance control cylinder is fixedly installed at the upper end of the horizontal section of the right-angle bracket, and a rectangular plate is provided at the telescopic end of the distance control cylinder.

5. The cold-rolled sheet surface defect detection device according to claim 3, characterized in that: The structure of the upper cleaning part is the same as that of the lower cleaning part, except that the parts are arranged in a mirror image. A scraper box is fixedly installed between the front and rear corresponding round head plates on the upper cleaning part. The scraper box contacts the left end of the cleaning roller on the left, and the opposite ends of the guide plate are slidably connected to the rectangular frame plate of the upper cleaning part.

6. The cold-rolled sheet surface defect detection device according to claim 1, characterized in that: The upper auxiliary part includes a second right-angle bracket, and the left end of the upper detection part is fixedly connected to the rectangular frame plate on the upper cleaning part through a rectangular linkage plate. The upper end of the rectangular linkage plate is fixedly installed with a second right-angle bracket, and the lower end of the horizontal section of the second right-angle bracket is fixedly installed with a second distance control cylinder. The telescopic end of the second distance control cylinder is fixedly connected to the rectangular plate in the upper cleaning part.

7. The cold-rolled sheet surface defect detection device according to claim 1, characterized in that: The support part includes an arc-shaped plate, and an arc-shaped plate is fixedly installed on the support platform and on both sides of the lower detection part. The middle part of the arc-shaped plate is connected to a movable plate for sliding left and right toward one side of the lower detection part. A plurality of connecting springs 1 are fixedly connected between the movable plate and the arc-shaped plate. The connecting springs 1 are evenly arranged linearly front and back. The movable plate is connected to the support plate for sliding left and right toward one side of the lower detection part. A plurality of connecting springs 2 are fixedly connected between the support plate and the movable plate. The connecting springs 2 are evenly arranged linearly front and back. The front and rear ends of the support plate are connected to the support platform for sliding left and right.

8. The cold-rolled sheet surface defect detection device according to claim 7, characterized in that: The lower detection part includes an image sensor, and the square guide rods on the front and rear sides are jointly fixedly installed with the image sensor. The support platform is fixedly installed with a charge integrator, a digital-to-analog converter, a digital signal processor and an image output end. The image sensor and the charge integrator are electrically connected, the charge integrator and the digital-to-analog converter are electrically connected, the digital-to-analog converter and the digital signal processor are electrically connected, and the digital signal processor and the image output end are electrically connected. An LED light strip is fixedly installed on the upper end of the image sensor.

9. The cold-rolled sheet surface defect detection device according to claim 8, characterized in that: The upper detection part includes a sliding plate, and the opposite sides of the limit plate are slidably connected to the sliding plates. The two sliding plates are commonly fixedly connected to the image sensor, and the lower end of the image sensor is fixedly installed with an LED light strip. The linkage part includes a square guide rod, and the support platform is symmetrically fixed with square guide rods that pass through the support platform. The square guide rods are slidably connected to the square blocks on the square guide rods, and the ends of the square guide rods away from the support platform are fixedly installed with anti-slip blocks. The support plate and the square blocks are commonly hinged with an inclined linkage rod.

10. The cold-rolled sheet surface defect detection device according to claim 9, characterized in that: The control part includes a threaded rod, and the front and rear sides of the image sensor are rotatably connected to the threaded rods, and the threaded rods on the front and rear sides are respectively threadedly connected to the corresponding sliding plates. The upper ends of the threaded rods are fixedly installed with pulleys 2, and the two pulleys 2 are connected through transmission belts 2. A rotating handle is fixedly installed on the upper end of the threaded rod on the front side, and an inclined plate is hinged between the sliding plate and the corresponding square sleeve block.

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