A steel strip edge burr on-line detection and trimming integrated device

Abstract

The application belongs to the technical field of metal processing, and particularly relates to a steel strip edge burr on-line detection and trimming integrated equipment, which comprises a base and a PLC controller, and further comprises a winding assembly, a side clamping assembly, a winding thickness feedback assembly, an on-line detection assembly, an ultrasonic vibration deburring assembly and a temperature measurement assembly. The application realizes the cooperation of the winding stack rigidification structure, the elastic abrasive tangential ultrasonic intermittent cutting and the infrared temperature measurement closed-loop temperature control, which can not only avoid the problems of edge deformation, stress disturbing magnetic performance and thin strip breakage during the trimming of the silicon steel strip, but also prevent the rigid tool from scratching and damaging the insulation coating, avoid the increase of the core eddy current loss, strictly control the end face temperature rise, avoid the carbonization of the coating and the thermal deterioration of the magnetic domain, and synchronously realize the efficient removal of the burr of the silicon steel strip, the complete protection of the insulation and the undamaged electromagnetic performance.

Description

Technical Field

[0001] This invention belongs to the field of metal processing technology, and in particular relates to an integrated device for online detection and repair of burrs on the edge of steel strips. Background Technology

[0002] Silicon steel strip, also known as electrical steel strip, is a core soft magnetic material used in the power and electronics industries to make iron cores. Its surface is generally coated with a micron-thick insulating coating to achieve electrical insulation between laminations and suppress eddy current losses. At the same time, the regular magnetic domain structure inside silicon steel is the core basis for its high magnetic permeability and low iron loss performance. The magnetic domain structure is highly sensitive to mechanical stress and temperature. Stress or overheating will cause magnetic domain disorder, directly degrading electromagnetic performance.

[0003] After the silicon steel strip undergoes longitudinal shearing and edge trimming processes, metal burrs inevitably form on the sheared end face. If these burrs are not trimmed, they can easily cause strip breakage in subsequent processes, puncture adjacent coatings during lamination, and lead to short circuits between laminations, seriously affecting the operational stability and energy efficiency of the core.

[0004] Existing deburring equipment for steel strip edges mostly adopts an online single-strip processing mode of scraping with a scraper and grinding with a grinding wheel. However, due to the material properties of silicon steel strip itself, conventional deburring processes have the following technical defects in actual processing: 1. Silicon steel strips are typically only 0.15 to 0.65 mm thick. Thin strips have extremely poor edge rigidity. The vertical force applied by traditional contact trimming can easily cause edge collapse, plastic deformation, and work hardening, introducing residual stress, disrupting the local magnetic domain structure, leading to increased edge hysteresis loss, deteriorating the core electromagnetic properties of silicon steel, and even posing a risk of strip breakage for ultra-thin silicon steel.

[0005] 2. Rigid scrapers and grinding wheels have hard, fixed contours. During processing, they are prone to scraping the insulating coating on the upper and lower surfaces of the steel strip, causing the coating to peel off and the metal substrate to be exposed. After lamination, the exposed edges form a conductive path, causing eddy current losses to increase exponentially. In severe cases, this can lead to local short circuits, overheating, and failure of the iron core.

[0006] 3. Traditional continuous grinding processes generate concentrated frictional heat, with local instantaneous temperatures on the end face reaching over 200°C. This not only causes carbonization, cracking, and peeling of the insulating coating, but also induces irreversible movement of magnetic domain walls and grain orientation disorder in the silicon steel matrix, resulting in permanent degradation of electromagnetic properties. This effect is particularly significant on the performance of high-grade oriented silicon steel. Summary of the Invention

[0007] The purpose of this invention is to address the above-mentioned problems by providing an integrated online detection and repair device for steel strip edge burrs.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an integrated online detection and trimming device for steel strip edge burrs, including a base and a PLC controller, and further including a winding assembly, a side clamping assembly, a winding thickness feedback assembly, an online detection assembly, an ultrasonic vibration deburring assembly, and a temperature measuring assembly; The winding assembly is fixed to one side of the upper end of the base and is used to wind and stack the silicon steel strip layer by layer to form a complete roll structure. The side clamping assembly is fixed to the upper end of the base and is axially opposite to the winding assembly. It is used to axially clamp and position the two end faces of the wound silicon steel strip. The winding thickness feedback component is fixed on the winding component and is used to detect the winding thickness of the silicon steel strip in real time and feed it back to the PLC controller. The online detection component is installed on the side clamping component and is used to detect the burr distribution and height of the entire end face as the steel coil rotates, and to feed the detection data back to the PLC controller. The ultrasonic vibration deburring assembly is installed on the side clamping assembly and is used to remove burrs from the end face of the silicon steel strip by ultrasonic elastic grinding. The temperature measuring component is installed on the ultrasonic vibration deburring component to monitor the temperature of the silicon steel strip end face in real time and feed the temperature data back to the PLC controller, which then dynamically adjusts the working power and the number of deburring cycles of the ultrasonic vibration deburring component.

[0009] In the above-mentioned integrated online detection and trimming equipment for steel strip edge burrs, the winding assembly includes a first support base, which is fixed on the upper end of the base. A winding roller is rotatably connected to the first support base via a rotating shaft. An end limiting circular plate is fixed to the end of the winding roller near the first support base. A servo motor for driving the rotating shaft to rotate is fixed on the first support base.

[0010] In the above-mentioned integrated online detection and repair equipment for steel strip edge burrs, the side clamping assembly includes a second support fixed to the upper end of the base. The side wall of the second support is fixedly fitted with three first electric push rods arranged in a ring. The moving ends of the three first electric push rods are fixed with the same clamping circular plate. A central through hole is opened at the center of the clamping circular plate to be movably sleeved with the winding roller.

[0011] In the above-mentioned integrated online detection and repair equipment for steel strip edge burrs, the second support base is rotatably connected to the side near the winding roller with a plug-in block, and the center of the free end of the winding roller is fixed with a plug-in seat that matches and plugs into the plug-in block.

[0012] In the above-mentioned integrated online detection and trimming equipment for steel strip edge burrs, the winding thickness feedback component includes a mounting plate fixed to the upper end of the first support base, and a laser rangefinder is fixed on the mounting plate. The emitting end of the laser rangefinder is radially arranged towards the winding roller and is used to detect the winding outer diameter of the silicon steel strip in real time.

[0013] In the above-mentioned integrated online detection and repair equipment for steel strip edge burrs, the online detection component includes a first U-shaped fixing plate fixed on the outside of the clamping circular plate. A visual image sensor is fixed on the side of the first U-shaped fixing plate near the clamping circular plate. A first strip-shaped opening corresponding to the visual image sensor is opened on the surface of the clamping circular plate. The length direction of the visual image sensor and the first strip-shaped opening is arranged along the radial direction of the clamping circular plate.

[0014] In the aforementioned integrated online detection and trimming device for steel strip edge burrs, the ultrasonic vibration deburring assembly includes a second U-shaped fixing plate fixed on a clamping circular plate. A second electric push rod is fixedly inserted on the second U-shaped fixing plate. A mounting base is fixed to the moving end of the second electric push rod. Multiple ultrasonic transducers are fixed radially on the mounting base. An amplitude transformer is fixed to the output end of each ultrasonic transducer. The same elastic abrasive trimming head is fixed to the end of each of the multiple amplitude transformers away from the ultrasonic transducers. The elastic abrasive trimming head has a long strip structure. A second strip opening corresponding to the elastic abrasive trimming head is opened on the surface of the clamping circular plate. The length direction of both the elastic abrasive trimming head and the second strip opening is radially arranged along the clamping circular plate.

[0015] In the above-mentioned integrated online detection and trimming equipment for steel strip edge burrs, the elastic abrasive trimming head is composed of an elastic polymer rubber matrix and micron-sized abrasive particles. The micron-sized abrasive particles are uniformly embedded inside the elastic polymer rubber matrix, and the tips of the abrasive particles protrude from the surface of the elastic polymer rubber matrix by 5 to 10 μm.

[0016] In the above-mentioned integrated online detection and trimming equipment for steel strip edge burrs, the temperature measuring component includes a multi-point infrared temperature sensor. The rear end of the multi-point infrared temperature sensor is fixed to the second U-shaped fixing plate by multiple connecting rods. The multi-point infrared temperature sensor is located on the rear side of the amplitude transformer, and the detection end is set towards the trimmed silicon steel strip end face. The multi-point infrared temperature sensor has multiple temperature measuring points arranged radially, covering the entire end face width.

[0017] Compared with existing technologies, the present invention has the following advantages: 1. This invention uses a winding assembly to wind and stack silicon steel strips layer by layer, forming an integral annular end face with hundreds to thousands of strip edges. The overall edge support stiffness is significantly improved compared to a single strip, and the trimming force is evenly distributed among multiple strip edges. The stress borne by a single strip edge is far below the plastic deformation threshold, effectively avoiding edge collapse, work hardening, and residual stress. This prevents the magnetic domain structure from becoming disordered due to stress, fully protecting the core electromagnetic properties of silicon steel, and avoiding the risk of strip breakage during thin strip trimming.

[0018] 2. This invention uses an elastic rubber matrix with embedded micron-level abrasive particles as the dressing head. It utilizes the mechanical properties of concentrated pressure on protruding burrs and dispersed pressure on flat end faces to achieve processing that only cuts burrs without damaging the flat end faces. Combined with the intermittent micro-cutting effect of tangential ultrasonic vibration, it not only significantly reduces the cutting force, but also avoids contact between the dressing tool and the upper and lower coating planes of the steel strip in space. This effectively avoids the problem of traditional rigid tools scratching the insulating coating of the board surface, ensuring the inter-sheet insulation performance after stacking and preventing the increase of eddy current loss.

[0019] 3. The ultrasonic intermittent cutting mode of this invention enables intermittent contact between the abrasive grains and the workpiece, resulting in short friction time and less heat generation. Combined with the large heat dissipation volume of the entire steel coil, the end face temperature rise is significantly reduced. With real-time monitoring and closed-loop control by multi-point infrared temperature sensors, the ultrasonic power is automatically reduced when the temperature approaches the safety threshold. The removal amount is supplemented by increasing the number of dressing cycles, keeping the end face temperature within the coating tolerance temperature and the magnetic domain safety temperature. This avoids carbonization and peeling of the insulating coating and prevents irreversible degradation of the magnetic domain structure of the silicon steel strip due to overheating, ensuring that the insulation and electromagnetic properties of the silicon steel strip are not affected by the dressing process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall left-side three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall right-side three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the winding assembly of the present invention; Figure 4 This is a left-side perspective three-dimensional structural diagram of the side clamping assembly of the present invention; Figure 5 This is a right-side perspective three-dimensional structural diagram of the side clamping assembly of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the online detection component of the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the ultrasonic vibration deburring component of the present invention; Figure 8 This is a three-dimensional structural schematic diagram of the temperature measuring component of the present invention; Figure 9 yes Figure 7Schematic diagram of the structure of a medium-elasticity abrasive dressing head; Figure 10 yes Figure 2 A three-dimensional structural diagram of the middle connector block and connector socket.

[0021] In the diagram: 1. Base; 2. Rewinding assembly; 21. First support seat; 22. Rotary shaft; 23. Rewinding roller; 24. End limiting circular plate; 25. Servo motor; 3. Side clamping assembly; 31. Second support seat; 32. First electric push rod; 33. Clamping circular plate; 34. Center through hole; 35. Insertion block; 36. Insertion seat; 4. Rewinding thickness feedback assembly; 41. Mounting plate; 42. Laser rangefinder; 5. Online detection assembly; 51. First U 52. Fixed plate; 53. Visual image sensor; 54. First strip opening; 6. Ultrasonic vibration deburring assembly; 65. Second U-shaped fixed plate; 66. Second electric actuator; 67. Mounting base; 68. Ultrasonic transducer; 69. Amplitude rod; 60. Elastic abrasive dressing head; 61. Elastic polymer rubber matrix; 62. Micron-level abrasive; 63. Second strip opening; 74. Temperature measuring assembly; 75. Multi-point infrared temperature sensor; 76. Connecting rod. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] like Figures 1-10 As shown in the figure, the integrated online detection and repair equipment for steel strip edge burrs in this embodiment includes a base 1 and a PLC controller (not shown in the figure), as well as a winding assembly 2, a side clamping assembly 3, a winding thickness feedback assembly 4, an online detection assembly 5, an ultrasonic vibration deburring assembly 6, and a temperature measuring assembly 7. The PLC controller is the control core of the equipment, and all electrical components are electrically connected to the PLC controller to realize signal interaction and full-process automated control.

[0024] like Figures 1-3 As shown, further, in this embodiment, the winding assembly 2 is fixed to one side of the upper end of the base 1, and is used to wind and stack the silicon steel strip layer by layer to form a whole roll structure, thereby improving the edge rigidity from the structural level. The winding assembly 2 includes a first support base 21, which is fixed to the upper end of the base 1. A winding roller 23 is rotatably connected to the first support base 21 through a rotating shaft 22. The winding roller 23 is used to carry the silicon steel strip to be wound layer by layer. An end limiting circular plate 24 is fixed to the end of the winding roller 23 near the first support base 21, which serves as an axial reference surface on one side of the steel roll to ensure that the winding end face is neat. A servo motor 25 is fixed on the first support base 21 to drive the rotating shaft 22 to rotate, thereby driving the winding roller 23 to rotate and simultaneously completing the winding action and the trimming rotation action.

[0025] In actual use, in this embodiment, the end of the silicon steel strip to be repaired is fixed on the surface of the take-up roller 23. The PLC controller controls the servo motor 25 to drive the take-up roller 23 to rotate. The silicon steel strip is tightly wound layer by layer on the take-up roller 23 to form a whole roll structure with neat end faces. Since the thickness of a single silicon steel strip is only 0.15 to 0.65 mm, its edge resistance to extrusion and bending is extremely weak. When traditional single strips are finished online, the contact force can easily cause the edge to collapse, the thickness to be reduced, and the work hardening to be introduced, which will introduce residual internal stress and thus disrupt the internal magnetic domain structure of silicon steel, resulting in increased hysteresis loss and decreased magnetic permeability. This structure uses hundreds to thousands of layers of silicon steel strips to form an integral annular end face by combining the originally independent single strip edges, which greatly improves the overall support stiffness of the edge compared to a single strip. During the trimming process, the force of the ultrasonic vibration deburring component 6 is evenly distributed among multiple strip edges, and the unit stress borne by a single strip edge is far lower than the plastic deformation yield threshold of silicon steel. This effectively solves the technical problems of easy deformation and easy generation of processing stress in traditional single-strip contact trimming, avoids magnetic domain wall displacement and magnetic domain orientation disorder caused by stress, and achieves the first layer of protection for the magnetic properties of silicon steel from the structural level, while avoiding the risk of strip breakage during ultra-thin silicon steel trimming.

[0026] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 10 As shown, further, in this embodiment, the side clamping assembly 3 is fixed to the upper end of the base 1 and is axially opposite to the winding assembly 2. It is used to clamp the wound steel coil axially on both ends to prevent interlayer misalignment during trimming and to improve the running stability of the winding roller 23. The side clamping assembly 3 includes a second support base 31 fixed to the upper end of the base 1. Three first electric push rods 32 arranged in a ring are fixedly inserted into the side wall of the second support base 31. The moving ends of the three first electric push rods 32 are fixed with the same clamping circular plate 33. A central through hole 34 is opened at the center of the clamping circular plate 33 to be movably sleeved with the winding roller 23. A plug-in block 35 is rotatably connected to the side of the second support base 31 near the winding roller 23. A plug-in seat 36 that matches and plugs into the plug-in block 35 is fixed at the center of the free end of the winding roller 23. The plug-in block 35 and the plug-in seat 36 are shaped to match and can be plugged into to provide rotational support for the cantilever end of the winding roller 23.

[0027] In actual use, in this embodiment, after the silicon steel strip is wound to the preset thickness, the PLC controller first controls the servo motor 25 to pause the winding action. The PLC controller controls the three first electric push rods 32 to extend synchronously, pushing the clamping round plate 33 to move axially towards the end limiting round plate 24. The first electric push rods 32 drive the clamping round plate 33 to squeeze and trim the end of the silicon steel strip, making its end flush. During the initial winding process of the winding roller 23, the clamping round plate 33 leaves a gap with the winding silicon steel strip to avoid direct contact affecting the winding work of the silicon steel strip. When it is confirmed that the online detection and trimming of the edge burrs of the silicon steel strip will continue, the servo motor 25 drives the winding roller 23 to reduce the rotation speed, and the first electric push rods 32 drive the clamping round plate 33 to move back to release the squeezing of the edge of the wound silicon steel strip, avoiding the problem that hard contact between the clamping round plate 33 and the edge of the silicon steel strip will form subsequent rotational resistance and generate excessive frictional heat. During the winding process, silicon steel strip may experience slight displacement, leading to uneven end faces and loss of trimming accuracy after winding. This structure uses double-end-face clamping constraint trimming to adjust the end-face flatness and ensure stable subsequent trimming accuracy. Three annularly distributed first electric push rods 32 are driven synchronously to ensure that the clamping plate 33 is subjected to uniform force and consistent end-face clamping force, avoiding excessive local clamping force that could damage the insulating coating at the edges and corners of the strip. During the rotation and winding process of the take-up roller 23, the cooperation between the plug block 35 and the plug seat 36 changes the take-up roller 23 from a single-end cantilever support to a double-end simple support, which greatly improves the bending stiffness of the take-up roller 23, avoids the end face swaying due to the bending deformation of the take-up roller 23 when the roll weight is large, and improves the running stability.

[0028] like Figures 1-2 As shown, further, in this embodiment, the winding thickness feedback component 4 is fixed on the winding component 2 and is used to detect the winding thickness of the silicon steel strip in real time. The detection and trimming process is automatically triggered based on the PLC controller. The winding thickness feedback component 4 includes a mounting plate 41 fixed on the upper end of the first support 21. A laser rangefinder 42 is fixed on the mounting plate 41. The emitting end of the laser rangefinder 42 is arranged radially toward the winding roller 23 and is used to detect the winding outer diameter of the silicon steel strip in real time.

[0029] In practical use, in this embodiment, the laser rangefinder 42 emits a laser in real time to measure the distance to the outer circumference of the steel coil. As the winding proceeds, the outer diameter of the steel coil gradually increases, and the distance measurement value gradually decreases. The PLC controller receives the distance measurement data in real time. When the value decreases to a preset threshold, it is determined that the winding thickness of the steel coil meets the trimming requirements. The winding speed is automatically reduced and the online detection and trimming process is started. The winding thickness is accurately and automatically determined through non-contact laser ranging, ensuring that the number of stacked layers of the steel coils trimmed in each batch reaches the set threshold, and ensuring that the end face stiffness of the steel coil is stable and meets the trimming conditions.

[0030] like Figures 4-6 As shown, further, in this embodiment, the online detection component 5 is installed on the side clamping component 3, and is used to detect the distribution and height of burrs on the entire end face as the steel coil rotates, and to feed the detection data back to the PLC controller; the online detection component 5 includes a first U-shaped fixing plate 51 fixed on the outside of the clamping circular plate 33, and a visual image sensor 52 is fixed on the side of the first U-shaped fixing plate 51 near the clamping circular plate 33. The surface of the clamping circular plate 33 is provided with a first strip opening 53 corresponding to the visual image sensor 52. The length direction of the visual image sensor 52 and the first strip opening 53 is arranged along the radial direction of the clamping circular plate 33; the visual image sensor 52 is a telecentric linear array camera, equipped with a dark field side light source, and the imaging is not affected by the end face distance fluctuation, and can accurately identify fine burrs larger than 2μm.

[0031] In actual use, in this embodiment, the steel coil rotates at a constant speed with the winding roller 23. The visual image sensor 52 continuously collects end face images through the first strip opening 53. In conjunction with the rotation of the steel coil, it completes a full-coverage scan of the end face around the entire circle. The built-in image processing algorithm extracts the edge contour, identifies the burr height and distribution density of the steel coil edge, and then confirms whether burr trimming is required.

[0032] like Figure 1 , Figure 2 , Figure 4 , Figure 7 , Figure 9 As shown, further, in this embodiment, the ultrasonic vibration deburring assembly 6 is mounted on the side clamping assembly 3 and is used to remove burrs on the end face of the silicon steel strip by ultrasonic elastic grinding; the ultrasonic vibration deburring assembly 6 includes a second U-shaped fixing plate 61 fixed on the clamping circular plate 33, a second electric push rod 62 fixedly inserted on the second U-shaped fixing plate 61, a mounting base 63 fixed at the moving end of the second electric push rod 62, and a plurality of ultrasonic transducers 64 fixed radially on the mounting base 63. An amplitude transformer 65 is fixed at the output end of the 4. Multiple amplitude transformers 65 are fixed with the same elastic abrasive trimming head 66 at the ends away from the ultrasonic transducer 64. The elastic abrasive trimming head 66 is a long strip structure. The surface of the clamping circular plate 33 is provided with a second strip opening 67 corresponding to the elastic abrasive trimming head 66. The elastic abrasive trimming head 66 can pass through the second strip opening 67 to contact the end face of the steel coil. The length direction of the elastic abrasive trimming head 66 and the second strip opening 67 are both arranged along the radial direction of the clamping circular plate 33. The elastic abrasive dressing head 66 is composed of an elastic polymer rubber matrix 661 and micron-sized abrasive particles 662. The elastic polymer rubber matrix 661 is polyurethane rubber with a Shore hardness of A60-80. The micron-sized abrasive particles 662 are diamond or silicon carbide micro powder, which are uniformly embedded inside the elastic polymer rubber matrix 661. The tip of the abrasive particle protrudes from the surface of the elastic polymer rubber matrix 661 by 5-10 μm, which is highly matched with the common burrs of silicon steel strip. Because the elastic polymer rubber matrix 661 has elastic deformation capability, when there are slight interlayer height differences in the cross-section of the steel coil, the elastic polymer rubber matrix 661 can locally concave and fill the edge area of ​​the concave silicon steel strip, so that the burrs in the concave position can also contact the abrasive particles.

[0033] In actual use, the second electric push rod 62 extends, pushing the mounting base 63 and the elastic abrasive dressing head 66 through the second strip opening 67, pressing against the end face of the steel coil with a set extrusion force. The ultrasonic transducer 64 is activated, converting the high-frequency electrical signal into high-frequency mechanical vibration. After the amplitude is amplified by the amplitude transformer 65, it drives the elastic abrasive dressing head 66 to perform high-frequency reciprocating vibration along the tangential direction of the end face. The steel coil rotates at a uniform speed, and the abrasive particles continuously grind and remove the burrs on the end face. The elastic abrasive dressing head 66 adopts a structure in which abrasive grains are embedded in a rubber matrix. It utilizes the mechanical properties of concentrated pressure in the protruding structure and dispersed pressure on the flat surface to achieve differentiated processing of burrs and flat areas. When the elastic abrasive dressing head 66 contacts the protruding burr, the burr is a locally sharp protrusion with a very small contact area and highly concentrated pressure. The elastic polymer rubber matrix 661 undergoes local concave deformation at the burr position, allowing the abrasive grains to fully penetrate the burr matrix. The pressure exceeds the cutting threshold, achieving stable burr cutting and removal. When the elastic abrasive dressing head 66 contacts the flat end face and corner area, the contact area is large and the pressure per unit area is much lower than the critical pressure for abrasive cutting. The elastic polymer rubber matrix 661 flexibly fits, and the micron-level abrasive grains 662 only make slight contact and cannot produce a cutting depth. This will not cause excessive cutting to the flat area, nor will it scratch the insulating coating on the upper and lower surfaces of the steel strip. This solves the problem of fixed profile of traditional rigid tools, uncontrollable processing boundaries, and easy to cross the boundary and scratch the insulating coating on the plate surface. It also avoids the formation of inter-plate conductive paths due to coating peeling after silicon steel strip is stacked, thus ensuring the insulation performance and low loss characteristics of the iron core. The vibration direction of the ultrasonic transducer 64 is set to the end face tangent direction. Combined with high-frequency ultrasonic vibration, it forms an intermittent micro-cutting mode of contact-cutting-detachment-re-contact. Only a very small contact pressure is required in the direction perpendicular to the edge end face of the silicon steel strip. This effectively eliminates the edge plastic deformation and work hardening caused by vertical extrusion, further reduces trimming stress, avoids stress disturbance of the magnetic domain structure, and achieves a second layer of protection for magnetic properties. Intermittent cutting results in extremely short cutting time for a single abrasive grain, significantly reducing frictional heat generation and lowering the temperature rise by more than 60% compared to traditional continuous grinding. This effectively reduces the risk of thermal damage to the coating and magnetic domains.

[0034] like Figures 7-8 As shown, further, in this embodiment, the temperature measuring component 7 is installed on the ultrasonic vibration deburring component 6 to monitor the temperature of the trimmed silicon steel strip end face in real time and feed the temperature data back to the PLC controller. The PLC controller dynamically adjusts the working power and trimming revolutions of the ultrasonic vibration deburring component 6. The temperature measuring component 7 includes a multi-point infrared temperature sensor 71. The rear end of the multi-point infrared temperature sensor 71 is fixed on the second U-shaped fixing plate 61 by multiple connecting rods 72. The multi-point infrared temperature sensor 71 is located on the rear side of the amplitude transformer 65, and the detection end is set towards the trimmed silicon steel strip end face through the second strip opening 67. The multi-point infrared temperature sensor 71 has multiple temperature measuring points arranged radially, covering the entire width of the end face.

[0035] In actual use, the multi-point infrared temperature sensor 71 collects temperature data at various radial positions on the end face of the trimmed steel coil in real time and uploads it to the PLC controller in real time. The PLC controller has preset temperature safety thresholds for the corresponding silicon steel grades (organic coatings are usually set to 120℃, inorganic coatings to 180℃, and magnetic domains to 250℃), and sets two warning levels. At the first warning level (90% of the threshold is reached), the PLC controller automatically reduces the output power of the ultrasonic transducer 64 and calculates the attenuation value of the removal amount per turn, and increases the number of trimming turns accordingly to ensure that the total burr removal amount remains unchanged. At the second warning level (100% of the threshold is reached), the ultrasonic power is further reduced, and the second electric push rod 62 is controlled to slightly retract the blade to reduce the extrusion force and control the temperature rise in a coordinated manner. If the temperature continues to exceed the standard, the PLC controller automatically triggers the intermittent trimming mode, and resumes normal operation after the temperature drops back to the safe range. Although ultrasonic intermittent cutting has significantly reduced heat generation, heat accumulation may still occur during prolonged continuous processing. By using real-time temperature measurement and closed-loop control, the temperature of the steel coil end face is strictly controlled below the coating's tolerance temperature to prevent coating carbonization, cracking, and peeling caused by excessive temperature. This ensures the coating's insulation performance and adhesion, and prevents short circuits caused by coating failure. It also prevents irreversible movement of magnetic domain walls and grain orientation disorder in the silicon steel matrix caused by excessively high local temperatures, thus preventing permanent degradation of electromagnetic properties such as increased hysteresis loss and decreased permeability. In particular, it ensures the stability of the magnetic properties of high-grade oriented silicon steel.

[0036] The operation process of this embodiment is as follows: the end of the silicon steel strip to be repaired is fixed on the winding roller 23, the servo motor 25 drives the winding roller 23 to rotate, the silicon steel strip is tightly wound on the winding roller 23, the laser rangefinder 42 monitors the roll diameter in real time, and when the winding thickness reaches the preset value, the PLC controller controls the winding speed to decelerate. Three first electric push rods 32 extend synchronously, pushing the clamping circular plate 33 to move axially, and together with the end limiting circular plate 24, clamp the two end faces of the steel coil. Servo motor 25 drives the steel coil to rotate at a constant speed. Vision image sensor 52 scans and detects the entire end face through the first strip opening 53, identifies the circumferential position, height and distribution density of burrs, and uploads the data to the PLC controller. The second electric actuator 62 pushes the elastic abrasive dressing head 66 to press against the end face, and the ultrasonic transducer 64 is activated, driving the abrasive head to vibrate at high frequency along the tangential direction to selectively grind and remove burrs. The multi-point infrared temperature sensor 71 monitors the temperature of the end face after trimming in real time. When the temperature approaches the safety threshold, it automatically reduces the ultrasonic power and the squeezing force, and increases the number of trimming cycles to make up for the amount of removal, so as to keep the temperature within the safe range. The ultrasonic vibration deburring component 6 stops working, and the online detection component 5 scans the end face of the steel coil again to re-inspect the deburring effect and coating integrity.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated online detection and repair device for steel strip edge burrs, comprising a base (1) and a PLC controller, characterized in that, It also includes a winding assembly (2), a side clamping assembly (3), a winding thickness feedback assembly (4), an online detection assembly (5), an ultrasonic vibration deburring assembly (6), and a temperature measuring assembly (7); The winding assembly (2) is fixed to one side of the upper end of the base (1) and is used to wind and stack the silicon steel strip layer by layer to form a whole roll structure. The side clamping assembly (3) is fixed at the upper end of the base (1) and is axially opposite to the winding assembly (2) for axial clamping and positioning of the two end faces of the wound silicon steel strip. The winding thickness feedback component (4) is fixed on the winding component (2) and is used to detect the winding thickness of the silicon steel strip in real time and feed it back to the PLC controller. The online detection component (5) is installed on the side clamping component (3) and is used to detect the burr distribution and height of the entire end face as the steel coil rotates, and to feed the detection data back to the PLC controller. The ultrasonic vibration deburring assembly (6) is installed on the side clamping assembly (3) and is used to remove the burrs on the end face of the silicon steel strip by ultrasonic elastic grinding. The temperature measuring component (7) is installed on the ultrasonic vibration deburring component (6) to monitor the temperature of the silicon steel strip end face in real time and feed the temperature data back to the PLC controller. The PLC controller dynamically adjusts the working power and the number of trimming cycles of the ultrasonic vibration deburring component (6). The winding assembly (2) includes a first support base (21), which is fixed to the upper end of the base (1). A winding roller (23) is rotatably connected to the first support base (21) via a rotating shaft (22). An end limiting circular plate (24) is fixed to the end of the winding roller (23) near the first support base (21). A servo motor (25) for driving the rotating shaft (22) to rotate is fixed to the first support base (21). The side clamping assembly (3) includes a second support base (31) fixed to the upper end of the base (1). The side wall of the second support base (31) is fitted with three first electric push rods (32) arranged in a ring. The moving ends of the three first electric push rods (32) are fixed with the same clamping circular plate (33). The center of the clamping circular plate (33) is provided with a central through hole (34) that is movably connected to the winding roller (23). The ultrasonic vibration deburring assembly (6) includes a second U-shaped fixing plate (61) fixed on a clamping circular plate (33). A second electric push rod (62) is fixedly inserted on the second U-shaped fixing plate (61). A mounting base (63) is fixed to the moving end of the second electric push rod (62). Multiple ultrasonic transducers (64) are fixed radially on the mounting base (63). An amplitude transformer (65) is fixed to the output end of the ultrasonic transducer (64). The same elastic abrasive trimming head (66) is fixed to one end of the multiple amplitude transformers (65) away from the ultrasonic transducer (64). The elastic abrasive trimming head (66) is a long strip structure. A second strip opening (67) corresponding to the elastic abrasive trimming head (66) is opened on the surface of the clamping circular plate (33). The length direction of the elastic abrasive trimming head (66) and the second strip opening (67) are both arranged radially along the clamping circular plate (33).

2. The integrated online detection and trimming equipment for steel strip edge burrs according to claim 1, characterized in that, The second support (31) is rotatably connected to a plug block (35) on the side near the take-up roller (23), and a plug seat (36) that matches and plugs into the plug block (35) is fixed at the center of the free end of the take-up roller (23).

3. The integrated online detection and repair equipment for steel strip edge burrs according to claim 1, characterized in that, The winding thickness feedback component (4) includes a mounting plate (41) fixed on the upper end of the first support (21), and a laser rangefinder (42) is fixed on the mounting plate (41). The emitting end of the laser rangefinder (42) is arranged radially toward the winding roller (23) for real-time detection of the winding outer diameter of the silicon steel strip.

4. The integrated online detection and repair equipment for steel strip edge burrs according to claim 1, characterized in that, The online detection component (5) includes a first U-shaped fixing plate (51) fixed on the outside of the clamping circular plate (33). A visual image sensor (52) is fixed on the side of the first U-shaped fixing plate (51) near the clamping circular plate (33). A first strip opening (53) corresponding to the visual image sensor (52) is opened on the surface of the clamping circular plate (33). The length direction of the visual image sensor (52) and the first strip opening (53) is arranged along the radial direction of the clamping circular plate (33).

5. The integrated online detection and repair equipment for steel strip edge burrs according to claim 1, characterized in that, The elastic abrasive dressing head (66) is composed of an elastic polymer rubber matrix (661) and micron-sized abrasive particles (662). The micron-sized abrasive particles (662) are uniformly embedded inside the elastic polymer rubber matrix (661), and the tips of the abrasive particles protrude from the surface of the elastic polymer rubber matrix (661) by 5 to 10 μm.

6. The integrated online detection and trimming equipment for steel strip edge burrs according to claim 1, characterized in that, The temperature measuring component (7) includes a multi-point infrared temperature sensor (71). The rear end of the multi-point infrared temperature sensor (71) is fixed on the second U-shaped fixing plate (61) by multiple connecting rods (72). The multi-point infrared temperature sensor (71) is located on the rear side of the amplitude transformer (65), and the detection end is set towards the end face of the trimmed silicon steel strip. The multi-point infrared temperature sensor (71) has multiple temperature measuring points arranged radially, covering the entire width of the end face.

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