An acid pickling and rolling on-line electric edge curling machine

Abstract

This invention discloses an online electric edge-rolling machine for continuous acid rolling. The edge-rolling machine includes a split frame, a double-cone adaptive rolling shaft, a permanent magnet synchronous drive module, a waste edge centering device, a tension adaptive module, and a PLC linkage control unit. Through permanent magnet synchronous drive and linkage with the production line, the synchronization error is ≤1m / min, and the speed reaches 350m / min. The double-cone rolling shaft is suitable for waste edges of 10-50mm, and the tension is adjustable from 80-250N. This significantly improves wear resistance, centering accuracy, tension stability, and equipment lifespan. This invention solves the problems of loose edge winding, poor synchronization, and severe wear in high-speed thick strip steel production lines and is suitable for continuous acid rolling production lines.

Description

Technical Field

[0001] This invention relates to the field of waste edge treatment technology in cold rolling pickling continuous rolling production lines, and particularly to an online electric edge curling machine for pickling continuous rolling. Background Technology

[0002] The pickling and continuous rolling production line is a core piece of equipment in cold rolling production. By continuously integrating the pickling and descaling processes with the cold rolling forming process, it eliminates redundant intermediate buffers and transfer steps in traditional step-by-step production, significantly improving production efficiency and reducing energy consumption and costs. This production line can reach a line speed of 350 m / min, with a single unit annual output exceeding 1 million tons, and is widely used in the production of various steel grades such as carbon steel, deep-drawing steel, high-strength steel, and silicon steel.

[0003] During the production process, to ensure the accuracy of strip width, the strip edges need to be trimmed, resulting in a large amount of waste edges. These waste edges have complex characteristics such as large thickness (1.5-6mm), width fluctuating with strip specifications, high temperature (up to 80℃), hard oxide scale on the surface, and covering a variety of steel grades with large differences in mechanical properties. These characteristics place stringent requirements on the tension control accuracy, synchronous response speed, and wear and corrosion resistance of the waste edge coiling equipment.

[0004] However, existing edge-rolling machines suffer from the following technical defects: First, the drive system has a slow response, with a synchronization error with the production line ≥5m / min. Under high-speed production conditions of 350m / min, this easily leads to waste edge accumulation or breakage, failing to meet the demands of high-speed continuous production. Second, the fixed roll structure cannot adapt to waste edges of different widths and thicknesses, especially when coiling thick strip steel or high-strength steel waste edges, resulting in insufficient tension and loose rolls requiring secondary refining. Third, they lack deep integration with the main acid-rolling system, requiring frequent manual parameter adjustments, which is cumbersome and prone to errors. Fourth, they are not adapted for high-temperature oxide scale conditions, leading to rapid wear of key components, easy accumulation of oxide scale, and high maintenance costs. Therefore, there is an urgent need for an online electric edge-rolling machine for acid-rolling that can solve the above technical problems. Summary of the Invention

[0005] This invention provides an online electric edge-rolling machine for acid continuous rolling, which aims to overcome the technical problems of existing edge-rolling machines in acid continuous rolling lines, such as slow response, poor adaptability, insufficient linkage, poor working condition adaptability, and high energy consumption, so as to achieve high-speed, accurate, and stable edge-rolling and adapt to the high-speed continuous production needs of acid continuous rolling production lines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An online electric edge-rolling machine for acid continuous rolling, characterized in that it comprises: Split rack; A double-cone self-adaptive reel is mounted on the split frame; A permanent magnet synchronous drive module is connected to the double-cone sleeve adaptive reel drive; The waste edge alignment device is installed on the split frame and is configured to cooperate with the double-cone sleeve adaptive roller. The tension adaptive module is mounted on the split frame and is configured to cooperate with the double-cone adaptive reel; and The PLC linkage control unit is electrically connected to the permanent magnet synchronous drive module, the waste edge centering device, and the tension adaptive module, respectively.

[0007] Through the above technical solution, this invention adopts a split frame as the foundation for the entire machine, a double-cone adaptive winding shaft to achieve adaptive winding of waste edges of different widths, a permanent magnet synchronous drive module to provide efficient and stable drive and achieve precise synchronization with the production line, a waste edge centering device to ensure accurate winding position of waste edges, a tension adaptive module to adjust winding tension in real time to ensure winding quality, and a PLC linkage control unit to achieve intelligent linkage control of the entire machine. The coordinated operation of these components effectively solves the technical problems of slow response, poor adaptability, insufficient linkage, limited adaptability to working conditions, and high energy consumption in existing technologies, achieving high-speed, precise, and stable winding of waste edges.

[0008] Preferably, the split frame includes a fixed base, a movable base, a transmission-side drum support, an operation-side drum support, and a fixed drum support. The fixed base is fixedly connected to the ground by anchor bolts. The movable base is connected to the fixed base by a centering linear guide rail. The transmission-side drum support and the operation-side drum support are respectively connected to the transmission side and operation side of the movable base by tension linear guide rails. The fixed drum support is fixedly connected to the middle position of the movable base by screws. The unloading side frame of the fixed drum support is arranged at an angle.

[0009] Through the above technical solution, the split frame adopts a multi-level sliding connection structure. The movable base can move laterally along the fixed base to achieve the centering of the whole machine. The transmission side drum support and the operation side drum support can move laterally along the tension linear guide rail to achieve independent adjustment of the drum spacing. The inclined arrangement of the unloading side of the fixed drum support facilitates the concentrated unloading of waste edge rolls, effectively avoiding the wear of the equipment caused by the accumulation of waste edges. At the same time, it significantly improves the overall rigidity and vibration resistance of the frame, ensuring stability under high-speed winding conditions.

[0010] Preferably, the double-cone sleeve adaptive reel includes a drive-side reel, an operating-side reel, and a fixed-end reel. The drive-side reel is mounted on the drive-side reel bracket, the operating-side reel is mounted on the operating-side reel bracket, and the fixed-end reel is mounted on the fixed-end reel bracket. The drive-side reel, the operating-side reel, and the fixed-end reel are coaxially arranged and together form a double-cone sleeve structure.

[0011] Through the above technical solution, the double-cone sleeve adaptive winding shaft adopts a three-section combined structure. The drive-side winding drum and the operating-side winding drum can rotate synchronously under the drive module, while the fixed-end winding drum serves as the intermediate support and winding reference. The coaxial arrangement of the three ensures concentricity and stability during the winding process. This structure can automatically adjust the winding contact surface according to the width of the waste edge, significantly improving the adaptability to waste edges of different widths and effectively solving the problem of poor adaptability of traditional fixed winding shaft structures.

[0012] Preferably, the permanent magnet synchronous drive module includes a permanent magnet synchronous geared motor, a flexible coupling, and a drive shaft. The permanent magnet synchronous drive module is arranged on the transmission-side drum support and the operation-side drum support with the equipment centerline as a mirror image. The permanent magnet synchronous geared motor is connected to the drive shaft through the flexible coupling. The drive shaft drives the transmission-side drum and the operation-side drum to rotate synchronously through a key connection.

[0013] By employing the above technical solution, a permanent magnet synchronous geared motor is used to replace the traditional asynchronous motor. Combined with the vibration reduction characteristics of the flexible coupling and the keyed connection of the drive shaft, balanced output and precise synchronization of driving forces on both sides are achieved. The permanent magnet synchronous motor features fast response speed and high control precision. Through a vector frequency converter, stepless speed adjustment can be achieved. After communicating with the main PLC of the acid rolling production line, the synchronization response time is ≤0.3s, and the synchronization error is ≤1m / min, effectively solving the problem of lag in traditional drive systems while significantly reducing energy consumption.

[0014] Preferably, the waste edge centering device includes a wiring cylinder, a distance sensor, and a centering linear guide rail. The wiring cylinder is located on the transmission side of the equipment, and its output end is connected to the movable base. The distance sensor is mounted on the movable base.

[0015] Through the above technical solution, the hydraulic cylinder drives the slider on the centering linear guide rail to move the base laterally. The distance sensor detects the position of the waste edge in real time and feeds it back to the control system, realizing closed-loop centering adjustment. This structure ensures precise centering between the roll and the waste edge during the waste edge winding process, with a centering accuracy of ≤±1mm, effectively avoiding accumulation or breakage accidents caused by waste edge misalignment.

[0016] Preferably, the tension adaptive module includes a clamping cylinder, a limit sensor, a tension linear guide rail, and a laser roll diameter sensor. The clamping cylinder is installed on the transmission side and the operating side of the movable base and arranged in a mirror image. The output end of the clamping cylinder is connected to the transmission side roll bracket and the operating side roll bracket, respectively. The laser roll diameter sensor is installed on the outside of the equipment, and the limit sensor is installed on the transmission side roll bracket and the operating side roll bracket, respectively.

[0017] Through the above technical solution, the laser roll diameter sensor monitors the changes in the waste edge roll diameter in real time. The control system dynamically adjusts the moving speed and stroke of the clamping cylinder based on the roll diameter data, and simultaneously adjusts the output torque of the permanent magnet synchronous geared motor to ensure stable tension during the winding process (fluctuation range ≤ ±5N), avoiding tension attenuation and unwinding problems caused by increased roll diameter. Limit sensors limit the extreme positions of tension adjustment to ensure safe operation of the equipment.

[0018] Preferably, the PLC linkage control unit includes a data acquisition layer, a control layer, an execution layer, and a human-machine interface layer. The data acquisition layer is electrically connected to the distance sensor, the laser roll diameter sensor, the limit sensor, and the operating parameter acquisition terminal of the acid rolling production line. The control layer realizes speed synchronization control, tension adaptive adjustment, centering correction, roll diameter monitoring, and fault alarm functions based on the acquired parameters. The execution layer is electrically connected to the permanent magnet synchronous drive module, the waste edge centering device, and the tension adaptive module and executes the commands issued by the control layer. The human-machine interface layer includes a touch screen. The PLC linkage control unit communicates with the main PLC of the acid rolling production line via a fieldbus.

[0019] Through the above technical solution, the PLC linkage control unit constructs a four-layer intelligent control system, achieving deep linkage with the pickling and rolling production line. The data acquisition layer has a built-in multi-steel grade tension parameter library, which can automatically match the optimal tension parameters based on information such as strip thickness and steel grade transmitted from the production line, eliminating the need for frequent manual adjustments. The multi-algorithm fusion of the control layer realizes closed-loop control of the entire process from speed synchronization and tension adjustment to centering correction and coil diameter monitoring, significantly improving the level of intelligence in operation.

[0020] Preferably, the permanent magnet synchronous drive module further includes self-aligning roller bearings, and both ends of the transmission-side drum and the operation-side drum are equipped with the self-aligning roller bearings.

[0021] Through the above technical solution, the self-aligning roller bearing adopts the P5 precision grade, with axial runout ≤0.01mm and radial runout ≤0.02mm, which effectively ensures the coaxiality of the drive shaft and the drum, reduces vibration and noise during high-speed rotation, and further improves the running stability and winding accuracy under high-speed winding conditions.

[0022] Preferably, the surface of the split frame is coated with a high-temperature resistant and corrosion-resistant coating, the fixed base is a welded box structure of H-beam steel, and the bottom of the fixed base is provided with leveling feet and shock-absorbing pads.

[0023] Through the above technical solutions, the high-temperature resistant and corrosion-resistant coating can effectively resist the high-temperature radiation and corrosive environment of the waste edge, extending the service life of the frame; the H-beam welded box structure has strong overall rigidity after aging treatment to eliminate internal stress; the leveling support feet combined with the shock-absorbing pads (damping coefficient ≥0.8) can effectively absorb the vibration generated by high-speed winding. Under the high-speed working condition of 350m / min, the frame amplitude is ≤±0.02mm, which significantly improves the winding accuracy of the waste edge.

[0024] Preferably, the main body of the double-cone adaptive reel is made of 40CrNiMo alloy material, and is subjected to heat treatment and surface nitriding treatment. The conical sleeve surfaces of the drive-side reel, the operating-side reel, and the fixed-end reel are provided with anti-slip textures.

[0025] Through the above technical solutions, the 40CrNiMo alloy, after quenching and tempering (hardness HRC28-32) and surface nitriding (hardness HRC55-58), possesses both high strength and wear resistance, significantly improving its ability to resist oxide scale wear, and extending its service life by more than 30% compared to ordinary material spools; the anti-slip texture can effectively increase the friction with the waste edge, preventing the waste edge from slipping during the winding process and ensuring a stable and reliable winding process.

[0026] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the online electric edge-rolling machine for acid continuous rolling of the present invention; Figure 2 This is a front view of the online electric edge-rolling machine for acid continuous rolling of the present invention; Figure 3 This is a block diagram of the PLC linkage control logic of the present invention.

[0028] Explanation of reference numerals in the attached figures: 101. Fixed base; 102. Movable base; 103. Drive-side drum bracket; 104. Operation-side drum bracket; 105. Fixed drum bracket; 201. Drive-side drum; 202. Operating-side drum; 203. Fixed-end drum; 3. Permanent magnet synchronous drive module; 301. Permanent magnet synchronous geared motor; 302. Flexible coupling; 303. Drive shaft; 304. Self-aligning roller bearing; 4. Edge alignment device; 401. Wiring cylinder; 402. Distance sensor; 403. Alignment linear guide; 5. Tension adaptive module; 501. Clamping cylinder; 502. Limit sensor; 503. Tension linear guide; 504. Laser roll diameter sensor; 6. PLC linkage control unit. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Example 1 This embodiment provides an online electric edge-rolling machine for acid continuous rolling, the overall structure of which is as follows: Figures 1 to 3 As shown, the edge-winding machine includes a split frame, a double-cone adaptive winding shaft, a permanent magnet synchronous drive module 3, a waste edge centering device 4, a tension adaptive module 5, and a PLC linkage control unit 6. All components work together to form a complete waste edge winding system.

[0031] like Figure 1-3 As shown, the split-type frame serves as the installation foundation for the entire equipment, supporting various functional modules. Its structural design is adapted to the high-temperature and high-speed operating conditions of the pickling and rolling line's waste edge. The split-type frame consists of a fixed base 101, a movable base 102, a transmission-side drum support 103, an operation-side drum support 104, and a fixed drum support 105. All components are made of high-strength steel to ensure structural rigidity and stability.

[0032] The fixed base 101 adopts a welded H-beam box structure. After welding, it undergoes aging treatment to eliminate internal stress, resulting in high overall rigidity and resistance to deformation. The bottom of the fixed base 101 is evenly equipped with leveling feet and shock-absorbing pads, effectively absorbing vibrations generated during high-speed winding. The fixed base 101 is fixedly connected to the concrete foundation of the ground using anchor bolts. Actual testing shows that under high-speed winding conditions of 350m / min, the frame amplitude is ≤±0.02mm, effectively preventing vibration from affecting the winding accuracy of the waste edge.

[0033] The surface of the split frame can effectively resist the high temperature radiation and corrosive environment of the waste edge of the acid continuous rolling line, and can withstand temperatures of over 200℃. Its wear resistance is 2 to 3 times higher than that of traditional organic coatings, significantly extending the service life of the frame.

[0034] The movable base 102 is slidably connected to the fixed base 101 via a centering linear guide 403. The centering linear guide 403 is a high-precision linear guide, in conjunction with a ball bearing slider, to ensure that the movable base 102 moves smoothly along the guide without jamming, with a lateral movement accuracy of ≤±0.05mm.

[0035] The drive-side drum support 103 and the operating-side drum support 104 are connected to the drive side and operating side of the movable base 102 respectively via tension linear guide rails 503. They can move flexibly along the tension linear guide rails 503 to adjust the spacing of the double-cone sleeve adaptive winding shaft, accommodating waste edges of different widths. The fixed drum support 105 is fixedly connected to the middle position of the movable base 102 with screws. The unloading side frame of the fixed drum support 105 is inclined at an angle greater than 20°, which effectively guides the waste edge as it is unwound, preventing accumulation during unwinding and reducing wear on the equipment.

[0036] The double-tapered adaptive reel is used to adapt and wind up waste edges of different widths and thicknesses. The double-tapered adaptive reel consists of a drive-side reel 201, an operating-side reel 202, and a fixed-end reel 203, all arranged coaxially. The drive-side reel 201 is mounted on the drive-side reel bracket 103 via bearing seats, the operating-side reel 202 is mounted on the operating-side reel bracket 104 via bearing seats, and the fixed-end reel 203 is mounted on the fixed-end reel bracket 105.

[0037] The drive-side drum 201, the operating-side drum 202, and the fixed-end drum 203 together form a double-cone sleeve structure with a drum taper of 1:8. The main body of the double-cone sleeve adaptive drum is made of 40CrNiMo alloy, which undergoes quenching and tempering treatment (hardness HRC28-32) and surface nitriding treatment (hardness HRC55-58), resulting in both high strength and wear resistance, and significantly improved resistance to oxide scale wear. Actual working condition tests show that its service life is more than 30% longer than that of drums made of ordinary materials.

[0038] The tapered sleeve surface of the double-tapered adaptive reel is provided with anti-slip texture, which includes wavy microgrooves extending along the axial direction of the reel and serrated microgrooves extending along the circumference of the reel. The wavy microgrooves have a wavelength of 2 to 4 mm, an amplitude of 0.3 to 0.6 mm, and a groove width of 0.5 to 1.0 mm. The serrated microgrooves have a tooth height of 0.2 to 0.4 mm and a tooth pitch of 1.0 to 1.5 mm. The wavy microgrooves and the serrated microgrooves orthogonally intersect on the reel surface to form a grid-like topology. The wavy microgrooves provide axial guidance for the waste edge, and the serrated microgrooves provide circumferential frictional torque, making the contact stress distribution of the waste edge on the reel surface more uniform and increasing the friction coefficient by more than 40%. The laser shock hardening treatment introduces a residual compressive stress layer, which increases the fatigue life of the reel surface by more than 5 times.

[0039] The permanent magnet synchronous drive module 3 provides stable and efficient driving force for the equipment, enabling synchronous operation with the pickling and rolling production line. This module consists of a permanent magnet synchronous geared motor 301, a flexible coupling 302, a drive shaft 303, and a self-aligning roller bearing 304. The permanent magnet synchronous drive module 3 is symmetrically arranged on the drive-side drum support 103 and the operating-side drum support 104, mirroring the equipment's centerline, ensuring balanced driving force on both sides.

[0040] The permanent magnet synchronous geared motor 301 is a 30kW high-efficiency permanent magnet synchronous motor with a rated speed of 1500 r / min and a rated torque of 191 N·m. It can meet the tension requirements for winding scrap edges of 1.5-6mm thick strip steel (winding tension adjustable from 80-250N). The motor is equipped with a vector frequency converter, supporting stepless speed adjustment from 0-350m / min with an adjustment accuracy of 1m / min. The permanent magnet synchronous drive module 3 communicates with the main PLC of the pickling and rolling production line via Profibus fieldbus, with a synchronization response time ≤0.3s and a synchronization error ≤1m / min, enabling precise synchronous operation with the production line.

[0041] The permanent magnet synchronous geared motor 301 significantly improves the safety and reliability of the drive system.

[0042] The permanent magnet synchronous drive module 3 has a built-in torque and speed feedback sensor. It can collect real-time waste edge winding tension data through motor torque and speed feedback combined with theoretical calculations at a frequency of 100Hz, providing data support for adaptive tension adjustment. Simultaneously, the drive module integrates overload and thermal protection functions. When the winding tension exceeds the set threshold of 250N, or the motor temperature is ≥85℃, the drive module automatically controls the motor to reduce speed and sends an alarm signal to the PLC linkage control unit 6 to prevent equipment damage due to overload or overheating.

[0043] The output shaft of the permanent magnet synchronous geared motor 301 is connected to the drive shaft 303 via a flexible coupling 302. The flexible coupling 302 effectively absorbs vibrations generated during motor operation, reduces vibration transmission, and improves transmission stability. The drive shaft 303 is made of 45 steel and heat-treated. It is connected to the drive-side drum 201 and the operating-side drum 202 via flat keys, driving them to rotate synchronously. Both ends of the drive-side drum 201 and the operating-side drum 202 are equipped with self-aligning roller bearings 304. These bearings have a precision grade of P5, with axial runout ≤0.01mm and radial runout ≤0.02mm, further ensuring the stability of high-speed winding.

[0044] The permanent magnet synchronous drive module 3 has an adjustment stroke of 50mm, which is suitable for waste edges with a width of 10-50mm and an alignment accuracy of ≤±1mm, providing a stable and efficient driving force for waste edge winding.

[0045] The waste edge alignment device 4 consists of a wiring cylinder 401, a distance sensor 402, and an alignment linear guide rail 403. The wiring cylinder 401 is located on the transmission side of the equipment, and its output end is connected to the movable base 102. By driving the slider on the alignment linear guide rail 403, it moves the movable base 102 laterally along the fixed base 101. The distance sensor 402 is mounted on the movable base 102 and is used to detect the waste edge position in real time. Working in conjunction with the wiring cylinder 401, it achieves precise alignment of the equipment, preventing waste edge offset from causing accumulation or breakage.

[0046] The tension adaptive module 5 is jointly implemented by the permanent magnet synchronous drive module 3, clamping cylinder 501, limit sensor 502, tension linear guide rail 503, and laser roll diameter sensor 504. The clamping cylinder 501 is installed on the transmission side and the operation side of the movable base 102 respectively, in a mirror arrangement. Its output end is connected to the transmission side roll bracket 103 and the operation side roll bracket 104 respectively. By driving the slider on the tension linear guide rail 503, it drives the transmission side roll bracket 103 and the operation side roll bracket 104 to move laterally.

[0047] The laser roll diameter sensor 504 is installed on the outside of the equipment according to the production site layout. It monitors the changes in the waste edge roll diameter in real time and dynamically adjusts the moving speed and stroke of the clamping cylinder 501. When the roll diameter reaches the set value, it automatically issues a roll change prompt to avoid roll unwinding due to excessive roll diameter. During the movement of the cylinder, the tension adaptive module 5, combined with the waste edge winding tension data provided by the permanent magnet synchronous drive module 3, dynamically adjusts the output torque of the permanent magnet synchronous reduction motor 301 in real time to ensure stable tension during the edge winding process (fluctuation range ≤ ±5N) and avoid tension attenuation due to increased roll diameter.

[0048] Limit sensors 502 are installed on the drive-side drum bracket 103 and the operating-side drum bracket 104 respectively to limit the extreme positions of tension adjustment and ensure the safe operation of the equipment.

[0049] This solution further improves the tension control accuracy from ±5N to ±2N, significantly enhancing the adaptability to fluctuations in the mechanical properties of different batches of materials.

[0050] The PLC linkage control unit 6 includes a data acquisition layer, a core control layer, an action execution layer, and a human-machine interaction layer.

[0051] The data acquisition layer is used to collect operating parameters from distance sensor 402, laser roll diameter sensor 504, limit sensor 502, and the main system of the pickling and rolling mill. The data acquisition layer has a built-in multi-steel grade tension parameter library, which automatically matches the optimal tension parameters based on information such as strip thickness and steel grade transmitted from the pickling and rolling production line.

[0052] Based on the collected parameters, the control layer implements functions such as speed synchronization control, adaptive tension adjustment, centering and correction, roll diameter monitoring, and fault alarm. The execution layer connects the permanent magnet synchronous drive module 3, the waste edge centering device 4, and the tension adaptive module 5, executing the commands issued by the control layer. The human-machine interface layer is equipped with a touch screen, which can display equipment operating parameters and fault information in real time, and supports manual setting of parameters such as roll diameter and tension, making operation convenient. The PLC linkage control unit 6 is deeply linked with the acid continuous rolling main system through the Profibus fieldbus, achieving synchronous operation with the production line without the need for frequent manual parameter adjustments.

[0053] The control layer of the PLC linkage control unit 6 embeds a digital twin-based edge-rolling process simulation module. This module includes a virtual model that corresponds one-to-one with the physical equipment. The virtual model incorporates rigid-flexible coupling dynamic equations for the frame-roller-waste edge, considering the elastic deformation of the roller, the nonlinear tension-strain relationship of the waste edge, and the modal vibration characteristics of the frame. The digital twin-based edge-rolling process simulation module receives real-time data from the data acquisition layer at 10-millisecond intervals and performs residual analysis between the simulation results and measured data. When the residual exceeds a preset threshold, it automatically triggers control parameter self-tuning. This digital twin module achieves adaptive optimization of the control system, significantly improving the operational stability and robustness of the equipment throughout its entire lifecycle.

[0054] During the operation of the acid rolling production line, the waste strips cut by the disc shears enter the coiling machine via a guide device. The PLC linkage control unit 6 receives parameters such as strip thickness, steel grade, and running speed transmitted from the production line, automatically calls up the built-in multi-steel grade tension parameter library, matches the optimal coiling tension setting value, and controls the waste strip centering device 4 to move the moving base 102 laterally to the centering position. The permanent magnet synchronous drive module 3 drives the transmission-side drum 201 and the operation-side drum 202 to rotate synchronously according to the set parameters to coil the waste strips. During the coiling process, the laser coil diameter sensor 504 monitors the coil diameter change in real time, and the tension adaptive module 5 dynamically adjusts the position of the clamping cylinder 501 and the motor output torque to maintain constant tension. When the coil diameter reaches the set value, the system issues a coil change prompt, and the operator starts a new coiling cycle after unloading the coil.

[0055] Application test of high-strength steel thick strip scrap coiling was carried out on a certain acid continuous rolling production line. The operating parameters were: strip thickness 4mm (high-strength steel, tensile strength σs=1000MPa), production line running speed 300m / min, and scrap width 30mm.

[0056] During initialization, the PLC linkage control unit 6 receives the production line parameters and automatically calls the high-strength steel winding parameters, sets the tension value to 150N, controls the waste edge centering device 4 to center with the strip, and at the same time the permanent magnet synchronous drive module 3 adjusts the double cone sleeve adaptive winding shaft to the set position.

[0057] During winding, the permanent magnet synchronous geared motor 301 operates synchronously at a speed of 300 m / min under the control of the vector frequency converter. The motor torque and speed feedback sensor collects tension data in real time (sampling frequency 100 Hz). The PLC dynamically adjusts the motor torque according to the change in roll diameter to maintain the tension within the range of 150 N ± 5 N. Oxide scale is collected and discharged through the collection tank.

[0058] When the laser roll diameter sensor 504 detects that the roll diameter has reached 700mm, the PLC linkage control unit 6 issues an audible and visual alarm, and the operator starts the hydraulic shear to cut off the waste edge, unloads the roll material (weighing about 120kg), and then starts a new winding cycle.

[0059] Application results show that the roundness error of the wound waste roll is ≤1.8mm, with no uncoiled or misaligned rolls, and the roll surface is smooth; the equipment runs continuously for 8 hours without failure, with motor temperature ≤75℃ and bearing temperature ≤65℃; and the oxide scale collection rate is 100%. These indicators fully demonstrate that the present invention meets the continuous production requirements of acid-rolled mill lines and effectively solves the technical problems of existing edge-rolling machines, such as slow response, poor adaptability, insufficient linkage, limited adaptability to working conditions, and high energy consumption.

[0060] The composite anti-corrosion coating solves the problem of frame protection under high-temperature corrosion environment of acid continuous rolling waste edges; the induction heating coil maintains appropriate plasticity of the oxide scale through active temperature control of the drum surface, significantly extending the drum's service life; the optically based digital twin-based edge-rolling process simulation module realizes online self-tuning of control parameters and system adaptive optimization; the orthogonal interlacing of wavy microgrooves and sawtooth microgrooves, along with laser shock hardening treatment, increases the drum surface friction coefficient by more than 40% and fatigue life by more than 5 times. The introduction of the above cross-domain technical features enables this invention to achieve high-precision and high-stability winding of waste edges under high-speed conditions of 350m / min, while significantly reducing equipment maintenance frequency and overall energy consumption, and improving the intelligence and convenience of on-site operation.

[0061] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0062] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An online electric edge-rolling machine for acid continuous rolling, characterized in that, include: Split rack; A double-cone self-adaptive reel is mounted on the split frame; The permanent magnet synchronous drive module (3) is connected to the double-cone sleeve adaptive reel drive; The waste edge centering device (4) is installed on the split frame and is configured to cooperate with the double cone sleeve adaptive roll. Tension adaptive module (5) is installed on the split frame and is configured to cooperate with the double cone sleeve adaptive reel; as well as The PLC linkage control unit (6) is electrically connected to the permanent magnet synchronous drive module (3), the waste edge centering device (4), and the tension adaptive module (5), respectively.

2. The acid continuous rolling online electric edge-rolling machine according to claim 1, characterized in that, The split frame includes a fixed base (101), a movable base (102), a transmission-side drum support (103), an operation-side drum support (104), and a fixed drum support (105). The fixed base (101) is fixedly connected to the ground by anchor bolts. The movable base (102) is connected to the fixed base (101) by a centering linear guide (403). The transmission-side drum support (103) and the operation-side drum support (104) are respectively connected to the transmission side and operation side of the movable base (102) by tension linear guides (503). The fixed drum support (105) is fixedly connected to the middle position of the movable base (102) by screws. The unloading side frame of the fixed drum support (105) is arranged at an angle.

3. The acid continuous rolling online electric edge-rolling machine according to claim 2, characterized in that, The double-cone sleeve adaptive reel includes a drive-side reel (201), an operating-side reel (202), and a fixed-end reel (203). The drive-side reel (201) is mounted on the drive-side reel bracket (103), the operating-side reel (202) is mounted on the operating-side reel bracket (104), and the fixed-end reel (203) is mounted on the fixed-end reel bracket (105). The drive-side reel (201), the operating-side reel (202), and the fixed-end reel (203) are arranged coaxially and together form a double-cone sleeve structure.

4. The acid continuous rolling online electric edge-rolling machine according to claim 3, characterized in that, The permanent magnet synchronous drive module (3) includes a permanent magnet synchronous geared motor (301), a flexible coupling (302), and a drive shaft (303). The permanent magnet synchronous drive module (3) is arranged on the transmission side drum support (103) and the operation side drum support (104) with the equipment centerline as a mirror image. The permanent magnet synchronous geared motor (301) is connected to the drive shaft (303) through the flexible coupling (302). The drive shaft (303) drives the transmission side drum (201) and the operation side drum (202) to rotate synchronously through a key connection.

5. The acid continuous rolling online electric edge-rolling machine according to claim 4, characterized in that, The waste edge centering device (4) includes a wiring cylinder (401), a distance sensor (402), and a centering linear guide rail (403). The wiring cylinder (401) is located on the transmission side of the equipment. The output end of the wiring cylinder (401) is connected to the movable base (102). The distance sensor (402) is installed on the movable base (102).

6. The acid continuous rolling online electric edge-rolling machine according to claim 5, characterized in that, The tension adaptive module (5) includes a clamping cylinder (501), a limit sensor (502), a tension linear guide rail (503), and a laser roll diameter sensor (504). The clamping cylinder (501) is installed on the transmission side and the operation side of the movable base (102) and arranged in a mirror image. The output end of the clamping cylinder (501) is connected to the transmission side roll bracket (103) and the operation side roll bracket (104) respectively. The laser roll diameter sensor (504) is installed on the outside of the equipment. The limit sensor (502) is installed on the transmission side roll bracket (103) and the operation side roll bracket (104) respectively.

7. The acid continuous rolling online electric edge-rolling machine according to claim 6, characterized in that, The PLC linkage control unit (6) includes a data acquisition layer, a control layer, an execution layer, and a human-machine interaction layer. The data acquisition layer is electrically connected to the distance sensor (402), the laser roll diameter sensor (504), the limit sensor (502), and the operating parameter acquisition terminal of the acid rolling production line. The control layer realizes speed synchronization control, tension adaptive adjustment, centering correction, roll diameter monitoring, and fault alarm functions based on the acquired parameters. The execution layer is electrically connected to the permanent magnet synchronous drive module (3), the waste edge centering device (4), and the tension adaptive module (5) and executes the instructions issued by the control layer. The human-machine interaction layer includes a touch screen. The PLC linkage control unit (6) is connected to the main PLC of the acid rolling production line via a fieldbus.

8. The acid continuous rolling online electric edge-rolling machine according to claim 4, characterized in that, The permanent magnet synchronous drive module (3) also includes a self-aligning roller bearing (304), and the self-aligning roller bearing (304) is installed at both ends of the transmission side drum (201) and the operation side drum (202).

9. The acid continuous rolling online electric edge-rolling machine according to claim 2, characterized in that, The surface of the split frame is coated with a high-temperature resistant and anti-corrosion coating. The fixed base (101) is a welded box structure of H-beam steel. The bottom of the fixed base (101) is provided with leveling feet and shock-absorbing pads.

10. The acid continuous rolling online electric edge-rolling machine according to claim 3, characterized in that, The main body of the double-cone adaptive reel is made of 40CrNiMo alloy material, and is subjected to heat treatment and surface nitriding treatment. The conical sleeve surfaces of the transmission side reel (201), the operation side reel (202) and the fixed end reel (203) are provided with anti-slip texture.

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