High-precision silicon steel coil longitudinal cutting line automatic winding tension control system

Abstract

The utility model provides a kind of high-precision silicon steel coiled material longitudinal shearing line automatic winding tension control system, belong to sheet processing equipment technical field.It solves the technical problem that existing technology cannot control tension in real time etc.This high-precision silicon steel coiled material longitudinal shearing line automatic winding tension control system, including the winding lower guide roller being arranged between tensioner and winding machine, the silicon steel sheet is arranged on the winding lower guide roller, the winding lower guide roller is arranged on winding guide frame, and tension detection component is arranged between winding lower guide roller and winding guide frame, the tension detection component, tensioner and winding machine are electrically connected with controller.The utility model has the advantages of high control precision and stability, convenient operation, strong applicability, strong system reliability etc..

Description

Technical Field

[0001] This utility model belongs to the technical field of sheet metal processing equipment, and in particular relates to an automatic winding tension control system for a high-precision silicon steel coil slitting line. Background Technology

[0002] A slitting line is a type of metal cutting equipment. Silicon steel is characterized by its thinness, brittleness, insulating coating (or self-adhesive adhesive layer), and inherent magnetic properties. Inappropriate tension control in silicon steel can lead to tensile deformation of the thin material or damage to the coating, generating excessive stress that affects its magnetic properties. It can also result in poor coil shape or even core collapse, impacting the quality of the finished product. In the processing of silicon steel coils, the slitting line is a crucial piece of equipment for cutting wide master coils into multiple narrow strips of the required width. The winding process, as the final step in the slitting line, directly determines the quality of the finished coil.

[0003] Existing tension control methods are insufficient to meet the high precision requirements of silicon steel materials. They cannot guarantee winding accuracy, protect the surface coating, protect magnetic properties, or reduce the tension generated by the tension-generating mechanism as the wrap angle increases during winding to ensure stable winding tension. Furthermore, they cannot adapt to tension fluctuations caused by dynamic changes in roll diameter during winding, nor can they compensate for measurement errors introduced by factors such as guide roller installation accuracy, mechanical vibration, and changes in strip path angle.

[0004] Therefore, the industry urgently needs a system capable of direct, high-precision, real-time detection and closed-loop control of winding tension. This system should be able to adapt to the high requirements of silicon steel materials for tension fluctuation and the precision of tension value control, effectively suppressing tension fluctuations and ensuring that the tension remains constant at the optimal set value throughout the entire winding process. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a high-precision automatic winding tension control system for silicon steel coil slitting lines that can accurately control tension in real time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The high-precision silicon steel coil slitting line automatic winding tension control system includes a winding lower guide roller disposed between the tension machine and the winding machine, on which a silicon steel sheet is pressed, and the winding lower guide roller is disposed on the winding guide frame. A tension detection component is disposed between the winding lower guide roller and the winding guide frame. The tension detection component, the tension machine, and the winding machine are electrically connected to the controller.

[0007] By directly installing a tension detection component between the lower guide roller and the winding guide frame, this component can directly sense the positive pressure applied by the silicon steel sheet to the guide roller, thereby calculating the actual tension value in real time and accurately. This direct measurement method avoids errors caused by transmission losses and friction, providing the most accurate data basis for high-precision control. After calculating the deviation, the controller immediately corrects the tension in real time. This continuous and automatic maintenance of stable tension ensures winding quality for silicon steel coils, protects the surface insulation coating and magnetic properties of the silicon steel sheet, and thus guarantees the performance and quality of the final product.

[0008] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the tension detection component includes a load cell mounted on the end of the lower winding guide roller. The load cell is fixed to the winding guide frame, and the end of the lower winding guide roller is mounted on a bearing seat, which is fixed to the weighing plate of the load cell. The load cell is connected to a controller, which is also connected to an angle detection component for detecting the angles α and β between the silicon steel sheet on the lower winding guide roller and the horizontal direction. The silicon steel sheet exerts downward pressure on the lower winding guide roller, and this pressure is directly proportional to the tension of the strip. This structure, by directly mounting the bearing seat of the guide roller on the weighing plate of the load cell, allows the pressure value borne by the guide roller to be directly transmitted to the load cell.

[0009] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the angle detection component includes laser sensing units respectively installed at the feed end and discharge end of the lower guide roller during winding. Each laser sensing unit includes laser sensors located on both sides of the silicon steel sheet, and these sensors are connected to the controller. The laser sensors detect the position of the silicon steel sheet by emitting a laser beam and receiving the reflected signal. This non-contact measurement method avoids causing wear or scratches to the surface of the silicon steel sheet.

[0010] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the angle detection component includes a vision detection unit disposed on at least one side of the silicon steel sheet, and the laser sensor is connected to the controller. The vision sensor can collect richer information. This means that it can not only detect the edge position of the silicon steel sheet to calculate the included angle, but also simultaneously acquire other rich information, providing a data foundation for precise tension control.

[0011] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the base of the weighing sensor is connected to the winding guide frame via a limiting frame. Alternatively, the base of the load cell is bolted to the winding guide. During production line operation, the silicon steel sheet may vibrate, deviate, or shake as it passes through the guide rollers, which can exert horizontal forces on its bearing housing. The limit bracket is a rigid constraint mechanism that connects the sensor base to the winding guide, preventing these forces from being transmitted to the sensor. This ensures accurate and stable sensor readings, contributing to stable tension control.

[0012] In the above-mentioned high-precision silicon steel coil slitting line automatic winding tension control system, the bottom of the winding guide frame is detachably fixed with a height adjustment seat, and the bottom of the height adjustment seat is detachably fixed with a shock-absorbing pad. The winding guide roller includes roller shafts at both ends, connected by a hollow roller cylinder. A support ring is provided between the inner end of each roller shaft and the inner wall of the roller cylinder. The shock-absorbing pad effectively isolates external vibrations, ensuring the accuracy of sensor measurements. The support ring between the inner end of the roller shaft and the hollow inner wall of the roller cylinder reduces the overall weight of the guide roller and lowers its moment of inertia while maintaining sufficient structural strength. This allows the guide roller to respond sensitively to instantaneous changes in tension, thereby achieving high-dynamic-performance tension control.

[0013] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the top of the winding lower guide roller is conveyed at a height higher than the conveying height of the tension machine and the winding height of the winding machine. This height-based layout design optimizes the contact state of the silicon steel sheet, thereby ensuring the accuracy and stability of tension measurement and protecting the material.

[0014] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the tension machine includes a tension frame, on which an upper pressure assembly and a lower pressure assembly are mounted. A tension conveying zone is formed between the upper and lower pressure assemblies. A tension generator is installed between the upper pressure assembly and the tension frame, and the tension generator is electrically connected to the controller. By directly driving the upper pressure assembly with an independent tension generator, the pressure applied to the silicon steel sheet can be actively and steplessly adjusted. The controller can send precise commands to instruct the generator to output a specific force, thereby generating precise and stable tension.

[0015] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the winding guide frame is further equipped with an upper winding guide roller located above and parallel to the lower winding guide roller. A height lifting component is provided between the upper winding guide roller and the winding guide frame. By setting the height lifting component, the height of the upper guide roller can be adjusted, providing suitable space for the threading operation. This improves the equipment's applicability and overall production efficiency.

[0016] In the aforementioned high-precision silicon steel coil slitting line automatic winding tension control system, the tension detection component includes a load cell, which is fixed on the winding guide frame. The end of the lower winding guide roller is mounted on a bearing seat, and the bearing seats at both ends are fixed on a collection frame, which is connected to the load cell. The load cell is connected to a controller, which is also connected to an angle detection component for detecting the angles α and β formed between the silicon steel sheet on the lower winding guide roller and the horizontal direction. The lower winding guide roller is relatively long, and the pressure distribution of the silicon steel sheet on the roller surface may be uneven. If the bearing seats at both ends are independently connected to two separate sensors, errors are easily introduced. The collection frame fixes the bearing seats at both ends of the guide roller together, integrating and averaging the force. This avoids measurement errors caused by uneven force on both sides and improves measurement accuracy.

[0017] The importance of tension control during winding lies in ensuring product quality. Unstable tension can cause the material to stretch or shrink during slitting, resulting in inconsistent slitting widths. Furthermore, tension fluctuations can cause material vibration and serpentine movement, leading to accelerated wear on the slitting blade and problems such as burrs, wavy edges, or even incomplete cuts. Excessive tension may damage the material's surface coating; insufficient tension causes the material to loosen, easily resulting in wrinkles and scratches. In addition, unstable tension can lead to uneven winding, internal damage to the roll, and edge collapse, severely affecting the quality of the finished roll.

[0018] It also improves production efficiency. Stable tension is a prerequisite for ensuring winding quality, significantly reducing scrap and rework caused by edge defects, surface damage, and poor winding. Furthermore, winding tension requires fine-tuning as the roll diameter increases. Traditionally, this requires manual intervention to stop the machine, adjust the tension, and then restart. Automatic tension control adjusts tension in real time without stopping the machine, improving equipment operating efficiency. Moreover, only with precise, rapid, and stable tension control can the slitting machine operate safely and reliably at higher design speeds, fully utilizing the equipment's capacity.

[0019] It also protects the material's properties. Compared to ordinary steel and aluminum, silicon steel possesses magnetic properties. Excessive tension can lead to excessive stress, thus affecting these magnetic properties. Automatic tension control ensures that the tension the material experiences during processing remains within a safe range, maintaining its original properties.

[0020] It also reduces operational difficulty and human error. Manual tension adjustment relies heavily on the operator's experience and attention, making it difficult to respond to changes in real time and prone to errors. Automatic tension control greatly simplifies operation, reduces the skill requirements for operators, and improves production consistency and reliability.

[0021] It also lies in achieving high precision and complex control. For scenarios such as ultra-thin materials, high-precision slitting, high-speed slitting, and special taper requirements, only automatic closed-loop tension control can meet the stringent process requirements.

[0022] Compared with existing technologies, the advantages of this high-precision silicon steel coil slitting line automatic winding tension control system are: 1. Closed-loop control design, resulting in high control accuracy and stability. 2. Adjustable structural design, offering convenient operation and strong applicability. 3. Long-term stable measurement, ensuring high system reliability. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram provided by this utility model.

[0024] Figure 2 This is a schematic diagram of the front structure of the guide roller provided by this utility model.

[0025] Figure 3 This utility model provides Figure 2 Enlarged structural diagram at point A in the middle.

[0026] Figure 4 This is a schematic diagram of the winding guide frame structure provided by this utility model.

[0027] Figure 5 This is a schematic diagram of the tension machine structure provided by this utility model.

[0028] Figure 6 This is a schematic diagram of the circuit connection structure provided by this utility model.

[0029] In the diagram, the components are: tension machine 1, tension machine frame 11, upper pressure assembly 12, lower pressure assembly 13, tension conveying area 14, tension generator 15, winding machine 2, winding guide frame 3, winding lower guide roller 31, roller shaft 311, roller 312, support ring 313, bearing seat 32, height adjustment seat 33, shock damping pad 331, winding upper guide roller 34, height lifting assembly 341, adjusting gear 342, lifting rack 343, silicon steel sheet 4, tension detection assembly 5, controller 51, weighing sensor 52, weighing plate 521, angle detection assembly 53, laser sensing unit 531, laser sensor 532, and vision inspection unit 533. Detailed Implementation

[0030] like Figures 1 to 6 As shown, the high-precision silicon steel coil slitting line automatic winding tension control system includes a winding lower guide roller 31 disposed between the tension machine 1 and the winding machine 2. A silicon steel sheet 4 is pressed on the winding lower guide roller 31. The winding lower guide roller 31 is disposed on the winding guide frame 3. A tension detection component 5 is disposed between the winding lower guide roller 31 and the winding guide frame 3. The tension detection component 5, the tension machine 1, and the winding machine 2 are electrically connected to the controller 51.

[0031] In this embodiment, the tension detection component 5 measures the current tension in real time, and the measured tension data is transmitted to the controller 51. The controller 51 compares the actual tension signal with the target tension value set by the operator and calculates the tension deviation. The controller generates a control output proportional to the magnitude of the deviation, and corrects the tension in real time. This achieves continuous automatic maintenance of stable tension, ensuring high-quality winding of the silicon steel material.

[0032] When the silicon steel sheet 4 passes over the lower guide roller 31 at angles α and β, the vertical force Fv detected by the load cell 52 is composed of the vertical component of the tension T and the weight Wt of the device. According to the force balance equation: After simplification, the tension formula is obtained: The weight of the winding guide roller 31 and bearing seat 32 is measured in advance by the weighing equipment to obtain Wt; the angle detection component 53 measures the angles α and β between the silicon steel sheets 4 on the front and rear sides of the winding guide frame 3 and the horizontal direction; the load Fv in the vertical direction is measured by the weighing sensor 52; and the tension T is calculated in real time by the controller 51 by substituting the calibrated Wt, α, β and Fv into the tension formula.

[0033] More specifically, the tension detection component 5 includes a load cell 52 disposed at the end of the lower winding guide roller 31. The load cell 52 is fixed on the winding guide frame 3. The end of the lower winding guide roller 31 is disposed on a bearing seat 32. The bearing seat 32 is fixed on the weighing plate 521 of the load cell 52. The load cell 52 is connected to a controller 51. The controller 51 is also connected to an angle detection component 53 for detecting the angles α and β between the silicon steel sheet 4 on the lower winding guide roller 31 and the horizontal direction.

[0034] More specifically, the angle detection component 53 includes laser sensing units 531 respectively disposed at the feed end and discharge end of the winding lower guide roller 31. Each laser sensing unit 531 includes laser sensors 532 located on both sides of the silicon steel sheet 4, and the laser sensors 532 are connected to the controller 51. The angle detection component 53 also includes a vision detection unit 533 disposed on one side of the silicon steel sheet 4, and the vision detection unit 533 is connected to the controller 51.

[0035] More specifically, the base of the load cell 52 is connected to the winding guide 3 by bolts.

[0036] like Figure 4As shown, a height adjustment seat 33 is detachably fixed to the bottom of the winding guide frame 3, and a shock-absorbing pad 331 is detachably fixed to the bottom of the height adjustment seat 33.

[0037] In this embodiment, the height adjustment seat 33 is connected to the bottom of the winding guide frame 3 by a detachable adjustment bolt, and the shock-absorbing pad 331 is also connected to the bottom of the height adjustment seat 33 by an adjustment bolt.

[0038] More specifically, the winding guide roller 31 includes roller shafts 311 at both ends, which are connected by a hollow roller 312. A support ring 313 is provided between the inner end of the roller shaft 311 and the inner wall of the roller 312.

[0039] More specifically, the top of the roller 312 of the winding guide roller 31 in the horizontal direction is higher than the conveying height of the tension machine 1 and the winding height of the winding machine 2.

[0040] More specifically, the tension machine 1 includes a tension machine frame 11, on which an upper pressing component 12 and a lower pressing component 13 are provided. A tension conveying zone 14 is formed between the upper pressing component 12 and the lower pressing component 13. A tension generator 15 is provided between the upper pressing component 12 and the tension machine frame 11. The tension generator 15 is electrically connected to the controller 51.

[0041] In this embodiment, the tension generator 15 adjusts the pressure of the pneumatic structure through a precision electric pneumatic proportional valve, thereby adjusting the winding tension through the upper pressure assembly 12 and the lower pressure assembly 13.

[0042] More specifically, the winding guide frame 3 is also provided with a winding upper guide roller 34 located above the winding lower guide roller 31 and parallel to it, and a height lifting component 341 is provided between the winding upper guide roller 34 and the winding guide frame 3.

[0043] In this embodiment, the height lifting component 341 includes an adjustable adjusting gear 342 and a lifting rack 343 that meshes with the adjusting gear 342 and is connected to the upper guide roller 34 of the winding mechanism.

[0044] More specifically, the tension detection component 5 includes a load cell 52, which is fixed on the winding guide frame 3. The end of the winding lower guide roller 31 is set on the bearing seat 32, and the bearing seats 32 at both ends are fixed on the assembly frame and connected to the load cell 52 through the assembly frame. The load cell 52 is connected to the controller 51, and the controller 51 is also connected to an angle detection component 53 for detecting the included angles α and β formed between the silicon steel sheet 4 on the winding lower guide roller 31 and the horizontal direction.

[0045] The working principle of this embodiment is that the automatic winding tension control is a closed-loop feedback control system. The action of the tension generator 15 changes the tension of the silicon steel sheet 4. The tension detection component 5 continuously detects the actual tension after the change and feeds back the new signal to the controller 51. The controller 51 compares, calculates, and outputs a control signal again to drive the tension generator 15 to perform a new round of adjustment. This cycle repeats, forming a closed loop, a control system that continuously corrects deviations and maintains the tension near the set value.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0047] Although this document uses numerous terms such as tension machine, tension machine frame, upper pressure assembly, lower pressure assembly, tension conveying zone, tension generator, winding machine, winding guide frame, guide roller, roller shaft, roller, support ring, bearing seat, height adjustment seat, shock absorption pad, upper guide roller for winding, height lifting assembly, adjusting gear, lifting rack, silicon steel sheet, tension detection assembly, controller, load cell, weighing plate, angle detection assembly, laser sensing unit, laser sensor, and vision inspection unit, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A high-precision automatic winding tension control system for a silicon steel coil slitting line, characterized in that, It includes a lower guide roller (31) for winding between a tension machine (1) and a winding machine (2), on which silicon steel sheets (4) are pressed. The lower guide roller (31) is mounted on a winding guide frame (3). A tension detection component (5) is provided between the lower guide roller (31) and the winding guide frame (3). The tension detection component (5), the tension machine (1), and the winding machine (2) are electrically connected to a controller (51).

2. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 1, characterized in that, The tension detection component (5) includes a load cell (52) disposed at the end of the lower winding guide roller (31). The load cell (52) is fixed on the winding guide frame (3). The end of the lower winding guide roller (31) is disposed on the bearing seat (32). The bearing seat (32) is fixed on the weighing plate (521) of the load cell (52). The load cell (52) is connected to the controller (51). The controller (51) is also connected to an angle detection component (53) for detecting the angles α and β between the silicon steel sheet (4) on the lower winding guide roller (31) and the horizontal direction.

3. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 2, characterized in that, The angle detection component (53) includes laser sensing units (531) respectively set at the feed end and the discharge end of the winding lower guide roller (31). The laser sensing unit (531) includes laser sensors (532) respectively located on both sides of the silicon steel sheet (4). The laser sensors (532) are connected to the controller (51).

4. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 2, characterized in that, The angle detection component (53) includes a vision detection unit (533) disposed on at least one side of the silicon steel sheet (4), and the vision detection unit (533) is connected to the controller (51).

5. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 2, characterized in that, The base of the weighing sensor (52) is connected to the winding guide frame (3) via a limiting frame or the base of the weighing sensor (52) is connected to the winding guide frame (3) via bolts.

6. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 1, characterized in that, The bottom of the winding guide frame (3) is detachably fixed with a height adjustment seat (33), and the bottom of the height adjustment seat (33) is detachably fixed with a shock-absorbing pad (331); the winding lower guide roller (31) includes roller shafts (311) arranged at both ends, the two roller shafts (311) are connected by a hollow roller (312), and a support ring (313) is provided between the inner end of the roller shaft (311) and the inner wall of the roller (312).

7. The high-precision silicon steel coil slitting line automatic winding tension control system according to any one of claims 1-6, characterized in that, The conveying height of the top of the roller (312) of the winding lower guide roller (31) in the horizontal direction is higher than the conveying height of the tension machine (1) and the winding height of the winding machine (2).

8. The high-precision silicon steel coil slitting line automatic winding tension control system according to any one of claims 1-6, characterized in that, The tension machine (1) includes a tension machine frame (11), on which an upper pressure assembly (12) and a lower pressure assembly (13) are provided. A tension conveying zone (14) is formed between the upper pressure assembly (12) and the lower pressure assembly (13). A tension generator (15) is provided between the upper pressure assembly (12) and the tension machine frame (11). The tension generator (15) is electrically connected to the controller (51).

9. The high-precision silicon steel coil slitting line automatic winding tension control system according to any one of claims 1-6, characterized in that, The winding guide frame (3) is also provided with a winding upper guide roller (34) located above the winding lower guide roller (31) and parallel to it. A height lifting component (341) is provided between the winding upper guide roller (34) and the winding guide frame (3).

10. The high-precision silicon steel coil slitting line automatic winding tension control system according to claim 1, characterized in that, The tension detection component (5) includes a load cell (52), which is fixed on the winding guide frame (3). The end of the winding lower guide roller (31) is set on the bearing seat (32). The bearing seats (32) at both ends are fixed on the collection frame and connected to the load cell (52) through the collection frame. The load cell (52) is connected to the controller (51). The controller (51) is also connected to an angle detection component (53) for detecting the angles α and β formed between the silicon steel sheet (4) on the winding lower guide roller (31) and the horizontal direction.

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