Anode carbon block extrusion forming crack laser detection device

Abstract

The invention discloses an anode carbon block extrusion forming crack laser detection device, and belongs to the technical field of laser defect detection, the anode carbon block extrusion forming crack laser detection device comprises a rack, the side part of the rack is provided with a line laser sensor group, and the anode carbon block extrusion forming crack laser detection device is characterized in that the middle part of the rack is rotatably connected with a turntable, and the turntable comprises a regular polygon plate and an arc-shaped plate; the arc-shaped plate is rotationally connected to the edge of the regular polygon plate, and a plurality of through holes are formed in the arc-shaped plate; a circular ring pipe is arranged on the lower side of the rotating disc, the circular ring pipe is communicated with a negative pressure part, the upper surface of the circular ring pipe is a plane, negative pressure holes are formed in the upper surface of the circular ring pipe, and the circular ring pipe is attached to the lower surfaces of the regular polygon plate and the arc-shaped plate; a limiting ring is arranged on the outer side of the rotary disc, and the limiting ring and the rotary disc are coaxial. The device has the advantages of being capable of being matched with cuboid and cylindrical anode carbon blocks at the same time, integrating the carbon powder removal function, and being comprehensive in detection and efficient in laser detection.

Description

Technical Field

[0001] This invention belongs to the field of laser defect detection technology, and in particular relates to a laser detection device for extrusion cracks in anode carbon blocks. Background Technology

[0002] Anode carbon blocks are a core consumable in aluminum electrolysis production, and their molding quality directly affects electrolysis efficiency, production safety, and overall production costs. In the anode carbon block preparation process, formula adjustment is a crucial means of optimizing key indicators such as conductivity and corrosion resistance. However, changes in the formula components can easily lead to internal or surface cracks during the extrusion molding stage. If these cracks are not detected in time, they can cause localized overheating during electrolysis due to uneven current distribution, accelerating anode consumption and even inducing serious production accidents such as cell leakage. Therefore, crack detection after extrusion molding has become a core aspect of anode carbon block production quality control.

[0003] In current industrial production, the mainstream shape of anode carbon blocks is cuboid, which can be precisely adapted to the structure of aluminum electrolysis cells, achieving uniform current distribution and high space utilization. However, in experimental research scenarios, customized cylindrical anode carbon blocks are widely used, mainly to investigate the impact of morphological parameters on key issues such as electrolysis efficiency and crack initiation patterns. This current situation of "cuboids for production and cylinders for research" presents a core technological requirement for crack detection devices that can simultaneously accommodate multiple shapes.

[0004] Existing technologies for detecting cracks in anode carbon blocks have significant shortcomings and fail to meet practical needs: First, they lack adaptability to different shapes. Most detection devices are designed for a single shape. For example, fixed-platform detection devices designed for cuboids cannot perform omnidirectional detection of cylindrical carbon blocks, while dedicated cylindrical detection equipment is difficult to be compatible with mainstream cuboid products. This results in the need for multiple sets of equipment in production and experimental scenarios, significantly increasing equipment investment and operational complexity. Second, detection accuracy is greatly affected by carbon powder. After the anode carbon blocks are extruded, a large amount of carbon powder easily adheres to the surface. Existing devices generally lack efficient carbon powder removal mechanisms. Carbon powder coverage can obscure surface microcracks, leading to misjudgments or missed detections by laser sensors.

[0005] Furthermore, traditional inspection methods are inefficient and have blind spots: multi-faceted inspection of cuboid carbon blocks requires manual flipping, which is not only time-consuming and labor-intensive but may also cause secondary damage to the carbon blocks during the flipping process; for cylindrical carbon blocks, it is difficult to achieve stable positioning and autonomous rolling, resulting in blind spots on the circumferential and axial areas. Therefore, developing a laser inspection device that can simultaneously adapt to both cuboid and cylindrical anode carbon blocks, integrate carbon powder removal functions, and provide comprehensive and efficient inspection has become an urgent need to overcome current technological bottlenecks. Summary of the Invention

[0006] To address the problems existing in the prior art, this invention provides a laser detection device for extruded cracks in anode carbon blocks. This device is adaptable to both cuboid and cylindrical anode carbon blocks, integrates carbon powder removal function, and offers comprehensive and efficient laser detection, thus solving the problems of the prior art.

[0007] This invention is implemented as follows: a laser detection device for cracks in the extrusion molding of anode carbon blocks includes a frame, with a line laser sensor group provided on the side of the frame. The device is characterized in that a turntable is rotatably connected to the center of the frame. The turntable includes a regular polygonal plate and an arc-shaped plate, with the arc-shaped plate rotatably connected to the edge of the regular polygonal plate. The arc-shaped plate has several through holes. A circular annular tube is provided on the lower side of the turntable, and the circular annular tube is connected to a negative pressure component. The upper surface of the circular annular tube is flat, and a negative pressure hole is provided on the upper surface of the circular annular tube. The circular annular tube is attached to the lower surfaces of the regular polygonal plate and the arc-shaped plate. A limiting ring is provided on the outer side of the turntable, and the limiting ring is coaxial with the turntable.

[0008] As a preferred embodiment of the present invention, the regular polygonal plate is a square plate, and four arc-shaped plates are provided, which are respectively rotatably connected to the edge of the regular polygonal plate.

[0009] As a preferred embodiment of the present invention, the limiting ring is detachably and fixedly connected to the upper side of the frame, or detachably and fixedly connected to the edge of the regular polygonal plate, and a brush is provided on the inner side of the limiting ring.

[0010] As a preferred embodiment of the present invention, the arc-shaped plate is provided with an insertion hole, and a cylindrical rod that can move axially is inserted into the insertion hole, and the cylindrical rod can be inserted into a limiting ring.

[0011] In a preferred embodiment of the present invention, two limiting plates are fixedly connected to the upper surface of the regular polygonal plate, and the two limiting plates are arranged in parallel. A push plate is provided between the limiting plates, and a push rod is fixedly connected to the side of the push plate near the center of the turntable. The two sides of the push plate are connected to the limiting plates by elastic elements. An elliptical block is provided above the regular polygonal plate. The elliptical block is fixedly connected to the frame by a support frame. An elliptical track is provided on the edge of the elliptical block. A roller is provided at the end of the push rod, and the roller is rotatably disposed in the elliptical track.

[0012] As a preferred embodiment of the present invention, the push plate is provided with a plurality of insertion holes, and a limit rod is inserted into the insertion holes.

[0013] In a preferred embodiment of the present invention, an arc-shaped rack is fixedly connected to the surface of the limiting ring; a threaded cylinder is fixedly connected to the frame, a threaded rod is connected to the threaded cylinder, a gear is fixedly connected to the threaded rod, the gear can mesh with the arc-shaped rack, a mounting base is fixedly connected to the threaded rod, and the line laser sensor assembly is mounted on the mounting base.

[0014] As a preferred embodiment of the present invention, the frame is a cross-shaped frame, a ring frame is fixedly connected to the frame, and a pad is fixedly connected to the lower side of the frame.

[0015] As a preferred embodiment of the present invention, the annular frame is provided with a through hole, and an electric push rod is provided in the through hole.

[0016] As a preferred embodiment of the present invention, the signal output terminal of the line laser sensor group is connected to a data processing module, the data processing module is connected to a display terminal and an alarm module, and the line laser sensor group is also equipped with a calibration board.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This device uses a flip-and-switch design with an arc plate to allow the turntable assembly to quickly switch between two states: a planar stage and a limiting stage. It can adapt to the detection requirements of cuboid and cylindrical anode carbon blocks without replacing core components, effectively solving the limitation of traditional devices that only adapt to a single form. This reduces the purchase and maintenance costs of multiple sets of equipment in production and experimental scenarios and significantly improves equipment utilization.

[0018] 2. The device deeply integrates the negative pressure suction mechanism with the turntable platform. Through the tight fit design of the circular tube and the arc plate and regular polygon plate, the negative pressure suction is precisely applied to the contact area between the carbon block and the platform, realizing the directional and efficient removal of carbon powder adhering to the surface of the carbon block. At the same time, a secondary dust removal can be initiated during the carbon block flipping or rolling process to avoid the problem of misjudgment and missed judgment caused by carbon powder covering micro-cracks, which greatly improves the accuracy and reliability of laser detection. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of the laser detection device for extruded cracks in anode carbon blocks provided in an embodiment of the present invention; Figure 2 This is provided by the embodiments of the present invention. Figure 1 A magnified structural diagram of part A in the middle; Figure 3 This is a second-view structural schematic diagram of the laser detection device for extruded cracks in anode carbon blocks provided in an embodiment of the present invention; Figure 4 This is provided by the embodiments of the present invention. Figure 3 A magnified structural diagram of part B in the middle section; Figure 5 This is a third-view structural schematic diagram of the laser detection device for extruded cracks in anode carbon blocks provided in an embodiment of the present invention.

[0020] In the diagram: 1. Frame; 2. Line laser sensor assembly; 3. Turntable; 31. Regular polygonal plate; 32. Arc plate; 4. Through hole; 5. Circular tube; 6. Insertion hole; 7. Limiting ring; 8. Brush; 9. Cylindrical rod; 10. Limiting plate; 11. Push plate; 12. Push rod; 13. Elastic element; 14. Elliptical block; 15. Support frame; 16. Elliptical track; 17. Roller; 18. Through hole; 19. Electric push rod; 20. Arc rack; 21. Threaded cylinder; 22. Threaded rod; 23. Gear; 24. Mounting base; 25. Pad; 26. Insertion hole; 27. Limiting rod; 28. Ring frame. Detailed Implementation

[0021] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0022] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a laser detection device for extrusion molding cracks of anode carbon blocks, including a frame 1, a line laser sensor group 2 provided on the side of the frame 1, a turntable 3 rotatably connected to the middle of the frame 1, the turntable 3 including a regular polygonal plate 31 and an arc plate 32, the arc plate 32 being rotatably connected to the edge of the regular polygonal plate 31, and having a plurality of through holes 4 on the arc plate 32; a circular annular tube 5 is provided on the lower side of the turntable 3, the circular annular tube 5 being connected to a negative pressure component, the upper surface of the circular annular tube 5 being a plane, the upper surface of the circular annular tube 5 having a negative pressure hole, the circular annular tube 5 being attached to the lower surface of the regular polygonal plate 31 and the arc plate 32; a limiting ring 7 is provided on the outer side of the turntable 3, the limiting ring 7 being coaxial with the turntable 3.

[0024] This laser detection device for cracks in extruded anode carbon blocks uses frame 1 as its mounting base. Its core consists of a turntable assembly 3, a negative pressure dust removal mechanism, and a line laser sensor group 2. The turntable assembly 3 allows for the adaptation of carbon blocks of various sizes through shape switching. Combined with negative pressure dust collection to ensure a safe testing environment, line laser scanning is used to identify cracks. Its specific working principle is divided into the following two modes based on the shape of the object being tested: The detection mode for the cuboid anode carbon block is as follows: When testing the cuboid anode carbon block, the turntable 3 assembly is in a planar bearing state: the arc-shaped plate 32 at the edge of the regular polygonal plate 31 remains horizontal, forming a complete planar platform together with the regular polygonal plate 31. The extruded cuboid anode carbon block is placed on the arc-shaped plate 32, aligning one side of the carbon block with the edge of the arc-shaped plate 32 to complete the initial positioning. After the device is started, the negative pressure component operates first to generate negative pressure suction. This suction is conducted through the annular tube 5 to the negative pressure holes on its surface. Since the upper surface of the annular tube 5 is in close contact with the lower surfaces of the regular polygonal plate 31 and the arc-shaped plate 32, the negative pressure suction can penetrate the through holes 4 on the arc-shaped plate 32 and act on the lower surface of the carbon block, adsorbing the carbon powder attached to the surface and gaps of the carbon block from bottom to top. The carbon powder enters the negative pressure component for collection through the through holes 4 of the arc-shaped plate 32 and the negative pressure holes of the annular tube 5, completing the carbon powder pretreatment.

[0025] After the toner is removed, the line laser sensor group 2 is activated, emitting a laser beam that covers the upper surface and side areas of the carbon block. Simultaneously, the turntable 3 slowly rotates around its own axis, causing the cuboid carbon block to rotate synchronously. This allows the line laser sensor group 2 to completely scan the currently exposed surface of the carbon block, enabling crack detection in that area. After the first surface is detected, the device controls the arc-shaped plate 32 to rotate 90° upwards around the rotation axis of the edge of the regular polygonal plate 31. At this time, the arc-shaped plate 32 switches from a load-bearing function to a flipping mechanism. During the flipping process, it causes the cuboid carbon block to rotate synchronously, turning its lower surface, which was originally in contact with the platform, into a side surface, and allowing it to fall smoothly onto the regular polygonal plate 31. After the carbon block is flipped, the negative pressure component operates briefly again to remove any carbon toner that may have fallen off during the flipping process. Subsequently, the turntable 3 continues to rotate, and the line laser sensor group 2 scans and detects the newly exposed surface of the carbon block.

[0026] The detection mode for cylindrical anode carbon blocks is as follows: When inspecting a cylindrical anode carbon block, the turntable 3 assembly first completes the switching of the limiting structure: the device controls all the arc plates 32 to rotate upwards by 90° around the edge of the regular polygonal plate 31, so that the arc plates 32 are perpendicular to the surface of the regular polygonal plate 31, forming an inner limiting structure around the regular polygonal plate 31; at the same time, the limiting ring 7, which is coaxially set with the turntable 3, forms an outer limiting structure. The two work together to form a bidirectional limiting structure for the cylindrical carbon block. The operator places the cylindrical anode carbon block on the upper surface of the annular tube 5, so that both ends of the carbon block are in contact with the inner side of the limiting ring 7 and the inner side of the arc plate 32, respectively, to achieve stable positioning.

[0027] After the detection is initiated, the negative pressure component operates, and the negative pressure holes on the upper surface of the annular tube 5 directly generate adsorption force on the lower surface of the cylindrical carbon block, drawing in and collecting the surface carbon powder for pretreatment. Subsequently, the turntable 3 rotates around its own axis. Since the cylindrical carbon block is in line contact with the upper surface of the annular tube 5, and both ends are rigidly constrained by the limiting ring 7 and the arc plate 32, the rotation of the turntable 3 will cause the cylindrical carbon block to roll synchronously along its own axis. During this process, the laser beam of the line laser sensor group 2 always covers the outer surface of the carbon block during its rolling process. Through the linkage mechanism of the turntable 3 rotation, the carbon block self-rolling, and laser scanning, the line laser completely scans the circumference of the cylindrical carbon block. Combined with the continuous slight adsorption of the negative pressure component (only used for powder removal and does not affect the rolling of the carbon block), the all-round, blind-spot-free detection of surface cracks of the cylindrical carbon block is finally achieved.

[0028] For example, the regular polygonal plate 31 is a square plate, and four curved plates 32 are provided, which are rotatably connected to the edge of the regular polygonal plate 31. Specifically, the regular polygonal plate 31 is set as a square plate, so that it has a regular four-sided structure, and the four curved plates 32 are rotatably connected to the four edges of the square plate one to one, forming a combined turntable 3 structure of a central square and four curved plates 32. When testing a cuboid anode carbon block, all four arc-shaped plates 32 remain horizontal, forming a complete bearing plane together with the square plate. This plane has a higher degree of matching with the bottom shape of the cuboid carbon block, providing a stable support area. When it is necessary to flip the cuboid carbon block, the arc-shaped plate 32 on the corresponding side can be controlled to flip upward by 90° individually according to the placement position of the carbon block and the testing requirements, so that the surface that was originally attached to the stage becomes the exposed surface. When testing a cylindrical carbon block, the four arc-shaped plates 32 flip upward by 90° simultaneously, forming a ring-shaped limiting structure around the square plate. Together with the outer limiting ring 7, this achieves multi-directional constraint on the cylindrical carbon block, improving its stability during the rolling process.

[0029] Furthermore, the limiting ring 7 is detachably fixed to the upper side of the frame 1, or detachably fixed to the edge of the regular polygonal plate 31, and a brush 8 is provided on the inner side of the limiting ring 7. The limiting ring 7 is fixed to the upper side of the frame 1 by bolts or other structures, and is coaxial with the turntable 3. The brush 8 is fixedly mounted on the inner side of the carbon block or near the surface of the carbon block, and the bristles of the brush 8 are in slight contact with the surface of the anode carbon block. When the turntable 3 drives the anode carbon block to rotate, whether it is cuboid or cylindrical, the surface of the carbon block and the brush 8 will generate relative motion: for cuboid carbon blocks, its side surface continuously rubs against the brush 8 during rotation; for cylindrical carbon blocks, its circumference is in contact with the brush 8 throughout the rolling process. The brush 8 mechanically cleans the surface of the carbon block during relative motion, brushing off the attached loose carbon powder. At the same time, combined with the negative pressure dust removal mechanism of the device, the brushed-off carbon powder is quickly adsorbed and collected by the negative pressure hole, avoiding secondary adhesion of carbon powder.

[0030] Furthermore, the arc-shaped plate 32 has an insertion hole 6, into which a cylindrical rod 9 capable of axial movement is inserted, and the cylindrical rod 9 can be inserted into the limiting ring 7. The cylindrical rod 9 is inserted in the middle. With this configuration, the cylindrical rod 9 has three usage modes. First, when detecting a cuboid anode carbon block, if the turntable 3 needs to drive the limiting ring 7 to rotate, the cylindrical rod 9 is simultaneously inserted into both the limiting ring 7 and the insertion hole 6, thus fixing the limiting ring 7 and the arc-shaped plate 32. If it is necessary to rotate the arc-shaped plate 32 by 90°, the cylindrical rod 9 can be pushed into the insertion hole 6 using a pushing assembly. When reconnection is needed, the cylindrical rod 9 can be reset using an electromagnet. Second, when detecting a cuboid anode carbon block, if the turntable 3 does not need to drive the limiting ring 7 to rotate, the cylindrical rod 9 can simply be pushed into the insertion hole 6. Third, when testing the cylindrical anode carbon block, the arc plate 32 is in a 90° rotated state, and the cylindrical rod 9 is connected to the limiting ring 7, which can make the cylindrical carbon block roll. When it is not needed, it can also be removed.

[0031] Two limiting plates 10 are fixedly connected to the upper surface of the regular polygon plate 31, and the two limiting plates 10 are arranged in parallel. A push plate 11 is provided between the limiting plates 10. A push rod 12 is fixedly connected to the side of the push plate 11 near the center of the turntable 3. The two sides of the push plate 11 are connected to the limiting plates 10 through elastic members 13. An elliptical block 14 is provided above the regular polygon plate 31. The elliptical block 14 is fixedly connected to the frame 1 through a support 15. An elliptical track 16 is provided on the edge of the elliptical block 14. A roller 17 is provided at the end of the push rod 12. The roller 17 is rolled in the elliptical track 16.

[0032] Two parallel limiting plates 10 are fixed to the upper surface of the regular polygonal plate 31 by welding or bolts to form a guide channel. A push plate 11 is embedded in this channel and can slide along the length of the limiting plates 10. The push plate 11 is connected to the limiting plates 10 on both sides by elastic elements 13 such as springs. In the initial state, the elastic elements 13 maintain their natural extension, and the push plate 11 is located in the middle of the channel. A roller 17 is installed at the end of the push rod 12 on the side of the push plate 11 near the center of the turntable 3. The roller 17 is embedded in the elliptical track 16 of the elliptical block 14 fixed directly above. When the regular polygonal plate 31 drives the push plate 11 and the limiting plate 10 to rotate synchronously, the roller 17 at the end of the push rod 12 rolls along the fixed elliptical track 16. As the radius of curvature of the elliptical track 16 changes continuously, the roller 17 is guided by a force within the track, which in turn pushes the push rod 12 to drive the push plate 11 to slide back and forth along the channel of the limiting plate 10. The elastic element 13 is stretched or compressed during the sliding of the push plate 11, providing a restoring force for the push plate 11 and ensuring that the roller 17 is always in close contact with the track.

[0033] When placing a rectangular charcoal block, roller 17 is positioned at the minor axis of the elliptical track 16, allowing the block to be placed between the limiting plates 10. During the rotation of the turntable 3, pusher plate 11 pushes the rectangular charcoal block onto the curved plate 32, ensuring precise positioning. For example, the following conditions must be met: first, the rectangular charcoal block is located in the center of the curved plate 32; second, one edge of the rectangular charcoal block is located at the junction of the curved plate 32 and the regular polygonal plate 31, facilitating precise flipping. Furthermore, the entire process involves four stations: In the first station, roller 17 is positioned at the first minor axis of the elliptical track 16, where the rectangular charcoal block is placed. In the second station, roller 17 is positioned at the first major axis of the elliptical track 16, at which point pusher plate 11 pushes the rectangular charcoal block onto the curved plate 32. At the third station, roller 17 is positioned at the second short axis of the elliptical track 16. After inspection, the arc plate 32 rotates 90°, flipping the rectangular carbon block onto the regular polygonal plate 31, placing it between the limiting plates 10. Then, the arc plate 32 resets. At the fourth station, roller 17 is positioned at the second long axis of the elliptical track 16. At this time, the push plate 11 pushes the rectangular carbon block onto the arc plate 32 again for easy unloading.

[0034] Furthermore, the push plate 11 has several insertion holes 26, into which limit rods 27 are inserted. Several evenly spaced insertion holes 26 are pre-set on the surface of the push plate 11, the diameter of which matches the diameter of the limit rods 27. The limit rods 27 can be directly inserted into or removed from the insertion holes 26. When it is necessary to accommodate cuboid carbon blocks of different widths, the limit rods 27 are inserted into the corresponding insertion holes 26 on the push plate 11 according to the actual width of the carbon block, so that the limit rods 27 protrude from the surface of the push plate 11.

[0035] Preferably, an arc-shaped rack 20 is fixedly connected to the surface of the limiting ring 7; a threaded cylinder 21 is fixedly connected to the frame 1, a threaded rod 22 is connected to the threaded cylinder 21, a gear 23 is fixedly connected to the threaded rod 22, the gear 23 can mesh with the arc-shaped rack 20, a mounting base 24 is fixedly connected to the threaded rod 22, and the line laser sensor group 2 is mounted on the mounting base 24.

[0036] An arc-shaped rack 20 is fixed to the outer circumference of the limiting ring 7 by bolts or welding. A threaded cylinder 21 is fixed to the frame 1 by a bracket. A threaded rod 22 and a threaded cylinder 21 form a helical transmission pair. A gear 23 is fixedly connected to one end of the threaded rod 22, and the gear 23 meshes precisely with the arc-shaped rack 20. The other end of the threaded rod 22 is fixed to a mounting base 24 by a rigid connection. The line laser sensor group 2 is fastened to the mounting base 24 by bolts. When it is necessary to adjust the detection height of the line laser sensor group 2, the limiting ring 7 can be driven to rotate by the turntable 3, which drives the arc-shaped rack 20 to rotate synchronously. The arc-shaped rack 20 drives the gear 23 to rotate through tooth surface meshing, and the gear 23 drives the threaded rod 22 to rotate synchronously. Since the threaded rod 22 and the fixed threaded cylinder 21 form a helical engagement, the rotation of the threaded rod 22 is converted into a linear lifting motion along the axis of the threaded cylinder 21, thereby driving the mounting base 24 and the line laser sensor group 2 to achieve height adjustment. By controlling the rotation angle of the limit ring 7, the threaded rod 22 can be rotated one or more times, thereby precisely controlling the lifting distance of the sensor group and ensuring that the laser beam can be focused on different height areas of the carbon block.

[0037] Through the precise meshing transmission of the arc rack 20 and the gear 23, the rotation of the limiting ring 7 is accurately converted into the number of rotations of the threaded rod 22. Combined with the high-precision helical transmission of the threaded cylinder 21 and the threaded rod 22, the quantitative control of the lifting height of the line laser sensor group 2 is realized. Compared with manual adjustment or independent drive, the adjustment error is smaller, ensuring that the laser beam can accurately cover any height area of ​​the carbon block from top to bottom.

[0038] The meshing transmission between gear 23 and arc-shaped rack 20 is a rigid connection, resulting in high power transmission efficiency and no slippage. This avoids the slack problems associated with belt drives and ensures the synchronization of the rotation of threaded rod 22 and limit ring 7, making the sensor height adjustment response faster. Utilizing the rotation of limit ring 7 as the power source for sensor height adjustment eliminates the need for a separate drive motor for threaded rod 22, simplifying the device's power system structure and reducing equipment space and manufacturing costs.

[0039] For example, the frame 1 is a cross-shaped frame, with a ring frame 28 fixedly connected to it, and pads 25 fixedly connected to the lower side of the frame 1. The frame 1 is designed as a cross-shaped structure with its four arms symmetrically distributed. Core components such as the turntable 3, the line laser sensor group 2, and the negative pressure component are respectively installed at corresponding positions on the cross-shaped arms, ensuring the center of gravity of the device is located in the central area of ​​the cross-shaped frame. Pads 25, made of rubber or metal, are fixed to the lower side of each of the four arms of the cross-shaped frame, and their lower surfaces are kept on the same horizontal plane. During installation, the pads 25 directly contact the ground or installation platform, providing stable support for the cross-shaped frame. Simultaneously, fine-tuning the height of the pads 25 ensures that the entire frame 1 remains level.

[0040] The annular frame 28 has a through hole 18, and an electric push rod 19 is installed in the through hole 18. The through hole 18 is opened on the annular frame 28 at the position corresponding to the arc-shaped plate 32, and is located at the third station. The cylinder of the electric push rod 19 is fixed in the through hole 18 by a flange or bracket. When it is necessary to flip the arc-shaped plate 32 from a horizontal state to a 90° vertical state, the control system issues a command, the telescopic rod of the electric push rod 19 extends, applies an upward thrust to the arc-shaped plate 32, and pushes the arc-shaped plate 32 to rotate around its connecting axis with the regular polygonal plate 31. When it is necessary to return the arc-shaped plate 32 to a horizontal state, the telescopic rod of the electric push rod 19 retracts, the arc-shaped plate 32 rotates downward until it returns to a horizontal state and fits against the upper surface of the annular tube 5.

[0041] The line laser sensor group 2 has a data processing module connected to its signal output terminal. This module is connected to a display terminal and an alarm module. The line laser sensor group 2 also includes a calibration plate. The line laser sensor group 2 converts the laser signal from the scanned anode carbon block surface into an electrical signal and transmits it to the data processing module in real time. The data processing module pre-stores laser scanning reference data for a standard crack-free carbon block. By comparing the real-time received detection data with the reference data, it uses image recognition algorithms to analyze the grayscale differences and contour deviations, accurately identifying parameters such as the location, length, and width of cracks. The calibration plate has several pre-set standard lines of known dimensions. Before each detection or after a certain number of consecutive detections, the calibration plate is placed on the turntable 3. The line laser sensor group 2 scans the calibration plate and transmits the data to the processing module. The module automatically calibrates the sensor's detection accuracy by comparing the actual dimensions of the standard lines with the scanned data. The data processing module sends the detection results (including crack parameters and pass / fail criteria) to the display terminal for visualization. When the detected crack size exceeds a preset threshold, the data processing module immediately triggers the alarm module to issue an audible and visual alarm signal, prompting the operator to handle the situation promptly.

[0042] Working principle of the invention: If the anode carbon block is rectangular, it is placed on the arc-shaped plate 32, with one side aligned with the edge of the arc-shaped plate 32. During operation, the negative pressure component draws in air, sucking out the carbon powder through the annular tube 5. Then, the line laser sensor group 2 performs detection. Afterward, the arc-shaped plate 32 is flipped upward by 90°, allowing the rectangular anode carbon block to be flipped onto the regular polygonal plate 31, so that the bottom surface becomes the side surface, enabling comprehensive detection. If the anode carbon block is cylindrical, the arc-shaped plate 32 is flipped upward by 90°, and the cylindrical anode carbon block is placed on the upper surface of the annular tube 5. At this time, the limiting ring 7 and the arc-shaped plate 32 respectively limit the two ends of the cylindrical anode carbon block. When the turntable 3 rotates, it can roll, suck up dust, and perform comprehensive detection.

[0043] 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.

[0044] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser detection device for cracks in extruded anode carbon blocks, comprising a frame (1), wherein a line laser sensor group (2) is provided on the side of the frame (1), characterized in that, The frame (1) is rotatably connected to a turntable (3) in the middle. The turntable (3) includes a regular polygonal plate (31) and an arc plate (32). The arc plate (32) is rotatably connected to the edge of the regular polygonal plate (31). The arc plate (32) is provided with several through holes (4). The turntable (3) is provided with a circular tube (5) on its lower side. The circular tube (5) is connected to a negative pressure component. The upper surface of the circular tube (5) is a plane. The upper surface of the circular tube (5) is provided with a negative pressure hole. The circular tube (5) is attached to the lower surface of the regular polygonal plate (31) and the arc plate (32). The turntable (3) is provided with a limiting ring (7) on its outer side, and the limiting ring (7) and the turntable (3) are coaxial.

2. The laser detection device for extruded cracks in anode carbon blocks as described in claim 1, characterized in that: The regular polygonal plate (31) is a square plate, and four arc-shaped plates (32) are provided, which are rotatably connected to the edge of the regular polygonal plate (31).

3. The laser detection device for extruded cracks in anode carbon blocks as described in claim 1, characterized in that: The limiting ring (7) is detachably fixed to the upper side of the frame (1) or detachably fixed to the edge of the regular polygonal plate (31), and a brush (8) is provided on the inner side of the limiting ring (7).

4. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 1, characterized in that: The arc plate (32) has an insertion hole (6), into which a cylindrical rod (9) that can move axially is inserted, and the cylindrical rod (9) can be inserted into a limiting ring (7).

5. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 4, characterized in that: Two limiting plates (10) are fixedly connected to the upper surface of the regular polygonal plate (31), and the two limiting plates (10) are arranged in parallel. A push plate (11) is provided between the limiting plates (10), and a push rod (12) is fixedly connected to the side of the push plate (11) near the center of the turntable (3). The two sides of the push plate (11) are connected to the limiting plate (10) by elastic members (13); an elliptical block (14) is provided above the regular polygonal plate (31), the elliptical block (14) is fixedly connected to the frame (1) by a support (15), the edge of the elliptical block (14) is provided with an elliptical track (16), the end of the push rod (12) is provided with a roller (17), and the roller (17) is rolled in the elliptical track (16).

6. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 5, characterized in that: The push plate (11) has several insertion holes (26), and a limit rod (27) is inserted into the insertion holes (26).

7. The laser detection device for extruded cracks in anode carbon blocks as described in claim 6, characterized in that: The surface of the limiting ring (7) is fixedly connected to an arc-shaped rack (20); a threaded cylinder (21) is fixedly connected to the frame (1), the threaded cylinder (21) is connected to a threaded rod (22), a gear (23) is fixedly connected to the threaded rod (22), the gear (23) can mesh with the arc-shaped rack (20), a mounting base (24) is fixedly connected to the threaded rod (22), and the line laser sensor group (2) is mounted on the mounting base (24).

8. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 7, characterized in that: The frame (1) is a cross-shaped frame, and a ring frame (28) is fixedly connected to the frame (1). A pad (25) is fixedly connected to the lower side of the frame (1).

9. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 8, characterized in that: The ring frame (28) is provided with a through hole (18), and an electric push rod (19) is provided in the through hole (18).

10. The laser detection device for extrusion-molded cracks of anode carbon blocks as described in claim 1, characterized in that: The line laser sensor group (2) has a data processing module connected to its signal output terminal. The data processing module is connected to a display terminal and an alarm module. The line laser sensor group (2) is also equipped with a calibration board.

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