An edge crack detection mechanism for a strip steel production line

Abstract

This utility model discloses an edge crack detection mechanism for a strip steel production line, relating to the field of strip steel production technology. The edge crack detection mechanism includes a support rod with a detection mechanism positioned above it; a lifting component positioned above the support rod to limit the position of an adjustment component; and an adjustment component including a connecting frame positioned below the lifting component. A drive motor is fixedly installed on one side of the connecting frame. After the imaging component detects an edge crack, it positions itself based on the slider position. A PLC controller controls the inkjet printer to trigger a delayed response. Once the crack moves below the inkjet printer, the ink cartridge supplies ink to complete precise marking. Detection and marking are seamlessly integrated, and the edge crack location is visually presented. Subsequent processes can quickly identify and process the crack, avoiding manual secondary searches, reducing accidents such as strip breakage caused by untimely edge crack handling, improving yield and production efficiency, and strengthening quality control throughout the entire process.

Description

Technical Field

[0001] This utility model relates to the field of strip steel production technology, specifically to an edge crack detection mechanism for a strip steel production line. Background Technology

[0002] Strip steel is a narrow and long steel plate produced by various steel rolling enterprises to meet the needs of industrialized production of various metal or mechanical products in different industrial sectors. Strip edge crack refers to the cracking of one or both sides of the strip edge along the length direction, which can easily lead to major quality accidents such as strip breakage. Therefore, it is controlled during the quality inspection of steel coils, and strip edge crack detection devices are required during the inspection.

[0003] The existing Chinese utility model patent with publication number [notation number missing] discloses a strip steel edge crack detection device, relating to the technical field of equipment related to strip steel product defect detection. It includes a vision frame assembly, a vision mechanism, and a crash barrier frame assembly. The vision frame assembly is connected to the vision mechanism and is mounted above an external strip steel conveying device. The vision mechanism includes a vision camera connected to an external image processing device, used to photograph the strip steel body conveyed by the conveying device. The crash barrier frame assembly is positioned along the extension direction of the strip steel conveying device on the side of the vision frame assembly and is mounted above the conveying device. This utility model alleviates the technical problems of low detection accuracy and low detection efficiency caused by manual strip steel edge crack detection in the prior art.

[0004] The aforementioned crack detection device inspects strip steel using a visual inspection mechanism. However, strip steel is mostly continuous and long, and this device cannot distinguish crack areas on the surface of the strip steel. In addition, the device requires manual adjustment of the spacing of the visual mechanism during use so that the visual mechanism is positioned on both sides of the strip steel. If the adjustment is incorrect, the image of the visual inspection mechanism will be incomplete, affecting the detection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an edge crack detection mechanism for strip steel production lines, which solves the problems of being unable to mark crack locations and the loss of imaging images due to manual distance adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A strip steel production line edge crack detection mechanism includes a support rod, and a detection mechanism is disposed above the support rod.

[0007] A lifting component, positioned above the support rod, is used to limit the position of the adjustment component;

[0008] The adjustment assembly includes a connecting frame disposed below the lifting assembly. A drive motor is fixedly installed on one side of the connecting frame. A bevel gear is inserted through the outer side of the drive motor's shaft. A two-way lead screw is inserted through the center of the connecting frame. Guide columns are fixedly installed on both sides of the connecting frame. A slider is movably installed on the outer side of the guide columns.

[0009] An imaging component, located below the slider, is used to inspect the strip steel.

[0010] Preferably, the lifting assembly includes an electric actuator fixedly installed on the upper end of the support rod, a connecting block fixedly installed at the top of the electric actuator, and a rodless cylinder fixedly installed between the connecting blocks.

[0011] Preferably, the bevel gear is also installed at the center of the bidirectional lead screw, and the bevel gear on the outside of the drive motor shaft meshes with the bevel gear at the center of the bidirectional lead screw.

[0012] Preferably, the slider and the guide post form a sliding connection, the slider is mirror-symmetrically installed on the outside of the guide posts on both sides of the connecting frame, and the slider and the bidirectional lead screw form a movable connection.

[0013] Preferably, the imaging component includes a mounting bracket movably mounted below the slider, a stepper motor is fixedly mounted at one end of the mounting bracket, a line scan camera and a laser source are fixedly mounted below the mounting bracket, and the imaging component also includes an inkjet printer fixedly mounted on one side of the slider, with an ink cartridge fixedly mounted at the upper end of the inkjet printer.

[0014] Preferably, the mounting bracket and the slider are rotatably connected, the stepper motor is fixedly connected to the slider, and the shaft of the stepper motor is fixedly connected to one end of the mounting bracket. The inkjet printer passes through the slider, the ink cartridge is connected to the inkjet printer, and the bottom end of the ink cartridge is fixedly connected to the slider.

[0015] Beneficial effects

[0016] This utility model provides an edge crack detection mechanism for a strip steel production line. Compared with the prior art, it has the following advantages:

[0017] (1) The edge crack detection mechanism of this strip steel production line constructs a multi-dimensional adaptation system through the coordinated operation of rodless cylinders, adjustment components, and imaging components. The rodless cylinder can drive the connecting frame to slide horizontally. When the strip steel is conveyed with a left or right position deviation, it can promptly correct the position of the connecting frame and imaging components to ensure that the detection area is always aligned with the edge of the strip steel. The drive motor runs, and the bidirectional lead screw rotates through bevel gear transmission. Under the limit of the guide column, the slider drives the imaging component to move closer or further away, automatically adapting to strip steel of different widths without the need for manual adjustment. The stepper motor drives the mounting frame to rotate, flexibly adjusting the angle of the line array camera and the laser source, so that the structured light source accurately covers the edge of the strip steel. From strip steel position deviation correction to width and angle adaptation, it comprehensively ensures the detection range and accuracy, adapting to various production scenarios.

[0018] (2) The edge crack detection mechanism of the strip steel production line detects the edge crack through the imaging component, and then locates it based on the position of the slider. The PLC controller controls the inkjet to trigger the delay. When the crack moves to the bottom of the inkjet, the ink cartridge completes the accurate marking. The detection and marking are seamlessly connected, and the position of the edge crack is presented intuitively. Subsequent processes can quickly identify and process the crack, avoiding manual secondary search, reducing accidents such as strip breakage caused by the failure to handle edge cracks in time, improving the yield rate and production efficiency, and strengthening the quality control of the whole process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the rodless cylinder mounting structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the bidirectional lead screw installation structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the ink cartridge installation structure of this utility model;

[0023] In the diagram: 1. Support rod; 2. Detection mechanism; 21. Lifting assembly; 211. Electric actuator; 212. Connecting block; 213. Rodless cylinder; 22. Adjustment assembly; 221. Connecting frame; 222. Drive motor; 223. Bevel gear; 224. Two-way lead screw; 225. Guide column; 226. Slider; 23. Imaging assembly; 231. Mounting bracket; 232. Stepper motor; 233. Linear scan camera; 234. Laser source; 235. Inkjet printer; 236. Ink cartridge. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: an edge crack detection mechanism for a strip steel production line includes a support rod 1, and a detection mechanism 2 is arranged above the support rod 1.

[0026] The lifting assembly 21 is located above the support rod 1 to limit the position of the adjustment assembly 22. The lifting assembly 21 includes an electric push rod 211 fixedly installed on the upper end of the support rod 1. A connecting block 212 is fixedly installed on the top end of the electric push rod 211, and a rodless cylinder 213 is fixedly installed between the connecting blocks 212.

[0027] Specifically, the support rod 1 can limit the position of the electric push rod 211. The height of the rodless cylinder 213 can be adjusted by moving the electric push rod 211 up and down, thereby adjusting the height of the connecting frame 221 below the rodless cylinder 213. The rodless cylinder 213 can drive the connecting frame 221 to slide, thereby horizontally correcting the left and right deviations in position during the steel strip conveying process, so as to ensure that the image of the line scan camera 233 can cover the entire edge of the steel strip.

[0028] Adjustment component 22 includes a connecting frame 221 located below lifting component 21. A drive motor 222 is fixedly mounted on one side of the connecting frame 221. A bevel gear 223 is inserted through the outer side of the shaft of the drive motor 222. A bidirectional lead screw 224 is inserted through the center of the connecting frame 221. Guide posts 225 are fixedly mounted on both sides of the connecting frame 221. A slider 226 is movably mounted on the outer side of the guide posts 225. The bevel gear 223 is also mounted at the center of the bidirectional lead screw 224. The bevel gear 223 on the outer side of the shaft of the drive motor 222 meshes with the bevel gear 223 at the center of the bidirectional lead screw 224. The slider 226 and the guide post 225 are slidably connected. The slider 226 is mirror-symmetrically mounted on the outer side of the guide posts 225 on both sides of the connecting frame 221, and the slider 226 and the bidirectional lead screw 224 are movably connected.

[0029] Specifically, the bidirectional lead screw 224 at the center of the connecting frame 221 is rotatably connected to the connecting frame 221. The bidirectional lead screw 224 is driven to rotate by the bevel gear 223 on the outer side of the drive motor 222 shaft. The slider 226 is limited by the guide post 225 at its angle. When the bidirectional lead screw 224 rotates, the slider 226 will move outward or inward according to the rotation direction of the bidirectional lead screw 224 to adjust the position of the imaging component 23 below the slider 226.

[0030] Imaging component 23, located below slider 226, is used to inspect strip steel. Imaging component 23 includes a mounting bracket 231 movably mounted below slider 226. A stepper motor 232 is fixedly mounted at one end of mounting bracket 231. A line scan camera 233 and a laser source 234 are fixedly mounted below mounting bracket 231. Imaging component 23 also includes an inkjet printer 235 fixedly mounted on one side of slider 226. An ink cartridge 236 is fixedly mounted at the upper end of inkjet printer 235. Mounting bracket 231 and slider 226 are rotatably connected. Stepper motor 232 is fixedly connected to slider 226, and the shaft of stepper motor 232 is fixedly connected to one end of mounting bracket 231. Inkjet printer 235 passes through slider 226. Ink cartridge 236 communicates with inkjet printer 235, and the bottom end of ink cartridge 236 is fixedly connected to slider 226.

[0031] Specifically, the mounting bracket 231, driven by the stepper motor 232, can rotate around its hinge point with the slider 226 to adjust the orientation of the lower line scan camera 233 and the laser source 234. The laser source 234 is a high-power laser generator (model 515-15-Yb-2500). A preset structured light source (such as striped light, grid light, or spot light) is projected onto the strip steel through the laser source 234. When cracks exist on the surface, the structured light will produce obvious deformation or discontinuity at the cracks, and the line scan camera 233 captures the deformed area. By combining light patterns with algorithmic analysis of the deformed area, the location, length, and depth of cracks can be accurately located. When a crack is detected on the strip surface, the inkjet printer 235 (model L1440-U2) sprays ink from the ink cartridge 236 downwards. The PLC controller limits the delayed triggering of the inkjet printer 235 so that when the strip crack moves below the inkjet printer 235, the ink is sprayed onto the strip surface, thereby forming a mark on the strip surface. Meanwhile, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] During operation, the height of the rodless cylinder 213 and the lower connecting frame 221 are first adjusted by the electric actuator 211 to match the height of the strip conveying equipment. Then, the drive motor 222 rotates, which drives the bidirectional lead screw 224 to rotate via the bevel gear 223. Under the limit of the guide column 225, the slider 226 moves the imaging component 23 to adjust it to the appropriate position on both sides of the strip. Subsequently, the stepper motor 232 works to adjust the angle of the mounting frame 231, allowing the laser source 234 to project a structured light source onto the strip. The line scan camera 233 captures the light pattern, and the algorithm analyzes and detects cracks. If a crack is detected, the PLC controller controls the inkjet printer 235 to trigger with a delay. When the crack moves below the inkjet printer 235, the ink cartridge 236 supplies ink, and the inkjet printer 235 sprays ink markings onto the surface of the strip. At the same time, the rodless cylinder 213 can drive the connecting frame 221 to slide, correcting the horizontal deviation of the strip conveying and ensuring comprehensive and accurate detection.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A strip steel production line edge crack detection mechanism, comprising a support rod (1), characterized in that... A detection mechanism (2) is provided above the support rod (1): A lifting component (21) is positioned above the support rod (1) to limit the position of the adjusting component (22); The adjustment assembly (22) includes a connecting frame (221) disposed below the lifting assembly (21). A drive motor (222) is fixedly installed on one side of the connecting frame (221). A bevel gear (223) is inserted through the outer side of the shaft of the drive motor (222). A two-way lead screw (224) is inserted through the center of the connecting frame (221). Guide columns (225) are fixedly installed on both sides of the connecting frame (221). A slider (226) is movably installed on the outer side of the guide column (225). An imaging component (23) is located below the slider (226) and is used to inspect the strip.

2. The edge crack detection mechanism for a strip steel production line according to claim 1, characterized in that: The lifting assembly (21) includes an electric actuator (211) fixedly installed on the upper end of the support rod (1), a connecting block (212) fixedly installed on the top end of the electric actuator (211), and a rodless cylinder (213) fixedly installed between the connecting blocks (212).

3. The edge crack detection mechanism for a strip steel production line according to claim 1, characterized in that: The bevel gear (223) is also installed at the center of the double-acting lead screw (224), and the bevel gear (223) on the outside of the drive motor (222) shaft meshes with the bevel gear (223) at the center of the double-acting lead screw (224).

4. The edge crack detection mechanism for a strip steel production line according to claim 1, characterized in that: The slider (226) and the guide post (225) form a sliding connection. The slider (226) is mirror-symmetrically installed on the outside of the guide post (225) on both sides of the connecting frame (221), and the slider (226) and the bidirectional lead screw (224) form a movable connection.

5. The edge crack detection mechanism for a strip steel production line according to claim 1, characterized in that: The imaging assembly (23) includes a mounting bracket (231) movably mounted below the slider (226). A stepper motor (232) is fixedly mounted at one end of the mounting bracket (231). A line array camera (233) and a laser source (234) are fixedly mounted below the mounting bracket (231). The imaging assembly (23) also includes an inkjet printer (235) fixedly mounted on one side of the slider (226). An ink cartridge (236) is fixedly mounted on the upper end of the inkjet printer (235).

6. The edge crack detection mechanism for a strip steel production line according to claim 5, characterized in that: The mounting bracket (231) and the slider (226) are rotatably connected. The stepper motor (232) is fixedly connected to the slider (226), and the shaft of the stepper motor (232) is fixedly connected to one end of the mounting bracket (231). The inkjet printer (235) passes through the slider (226). The ink cartridge (236) is connected to the inkjet printer (235), and the bottom end of the ink cartridge (236) is fixedly connected to the slider (226).

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