Silicon steel paper-cylinder-free winding tension control method and device and silicon steel paper-cylinder-free winding method and device
By using a paperless coiling method, and by employing tension compensation gradient coefficients and misalignment processes, the high cost and complex operation problems caused by paper coiling in silicon steel production have been solved, resulting in cost reduction and efficiency improvement.
Patent Information
- Application Number
- CN202511782986.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-30
- Publication Date
- 2026-02-13
AI Technical Summary
The use of paper tubes for winding in existing silicon steel production leads to complex production processes and high costs. In particular, the purchase, transportation, storage, and parameter input of paper tubes increase production costs and affect efficiency.
By adopting a paperless coil winding method, the width and thickness of the silicon steel plate are obtained, and the winding tension under different roll diameters is calculated using the tension compensation gradient coefficient. Combined with the winding aid belt and the misalignment process, paperless coil winding is achieved.
Eliminating the use of paper tubes reduced production costs, simplified operating procedures, improved production efficiency, and ensured the stability of steel coils during winding, unloading, and transportation.
Smart Images
Figure CN121516630A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of silicon steel winding technology, specifically relating to a silicon steel paperless tube winding tension control, winding method and device. Background Technology
[0002] The production process of grain-oriented silicon steel is complex, with strict manufacturing techniques, long procedures, and high production costs. During production, finished steel strips are wound using paper tubes to prevent collapse of the coil due to lack of support at the core during unwinding, hoisting, transportation, and unwinding. Using paper tubes not only increases the costs of purchasing, transporting, and storing paper tubes, but also requires workers to install paper tubes on the winding machine for each roll, and to input parameters such as strip width, strip thickness, and winding tension into the winding machine each time a roll is changed. This not only affects production efficiency but also increases production costs. Summary of the Invention
[0003] This invention aims to solve the above-mentioned problems by providing a silicon steel paperless winding tension control, winding method and device that does not use paper tubes during winding, thus solving the problems of complex production processes and high production costs associated with current paper tube winding methods.
[0004] According to the technical solution of the present invention, the silicon steel paperless tube winding tension control method includes the following steps: S1: Obtain the width and thickness of the silicon steel plate; S2: Obtain the tension compensation gradient coefficients for different roll diameters based on the following correspondence: For rolls with a diameter ≤ 570 mm, the tension compensation gradient coefficient is k1, and the value of k1 ranges from [0.35, 0.45]. The roll diameter is 570-650mm, and the tension compensation gradient coefficient gradually decreases from k1 to k2, with the value of k2 ranging from [0.25, 0.35]. Roll diameter 650-710mm, tension compensation gradient coefficient is k2; For roll diameter ≥ 710 mm, the tension compensation gradient coefficient gradually decreases from k2 to k3, and the value range of k3 is [0, 0.1]. S3: Calculate the winding tension for different roll diameters based on the board width, board thickness, and tension compensation gradient coefficient.
[0005] Furthermore, the width of the silicon steel plate is 1000mm-1300mm and the thickness is 0.30mm-0.18mm.
[0006] Furthermore, in step S3, the relationship between the winding tension and the plate width, plate thickness, and tension compensation gradient coefficient is shown in equation (I): (I); Where F is the winding tension in kg; d is the plate width in mm; h is the plate thickness in mm; k is the tension compensation gradient coefficient; E is the radial elastic modulus of the steel coil, taken as 210000 MPa; Rp0.2 is the yield strength, taken as 310 MPa; s is the residual deformation, taken as 6-7 mm; ε is the correction coefficient, taken as 0.01.
[0007] A second aspect of the present invention provides a method for winding silicon steel paperless tubes, which employs the above-mentioned silicon steel paperless tube winding tension control method.
[0008] Furthermore, this includes the following steps: SS1: Use a winding aid belt to wind the coil. When the coil diameter reaches 570mm, start the offset process. SS2: After winding, secure the innermost steel strip with tape.
[0009] Furthermore, before step SS1, an anti-slip treatment is performed on the surface of the winding drum.
[0010] A third aspect of the present invention provides a silicon steel paperless tube winding device, comprising a winding machine and a tension control system, wherein the tension control system is used to implement the above-mentioned silicon steel paperless tube winding tension control method, comprising: The detection module is used to detect the width, thickness, and coil diameter of silicon steel. The control module calculates the winding tension based on the detection data from the detection module and transmits the calculation result to the winding machine.
[0011] The technical solution of the present invention has the following advantages compared with the prior art: This invention eliminates the use of paper tubes by controlling tension, saving costs associated with purchasing, transporting, and storing paper tubes used for winding. It also simplifies the process of employees installing paper tubes onto the winding machine for each roll when using paper tubes for winding, and eliminates the need to input parameters such as board width, board thickness, and winding tension into the winding machine each time a roll is changed. This results in reduced production costs while improving production efficiency. Attached Figure Description
[0012] Figure 1 This is a demonstration of the paperless roll-up effect in Example 1.
[0013] Figure 2 This is a demonstration of the paperless roll-up effect in Example 2.
[0014] Figure 3 This is a demonstration of the paperless roll-up effect in Example 3.
[0015] Figure 4 This is a demonstration of the paperless winding effect in Comparative Example 1. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.
[0017] This invention provides a tension control method for achieving paperless winding of silicon steel tubes, comprising the following steps: S1: Obtain the width and thickness of the silicon steel plate; S2: Obtain the tension compensation gradient coefficients for different roll diameters based on the following correspondence: The roll diameter is ≤570mm (the minimum roll diameter is determined by the winding machine's expansion cylinder, for example, it can be 508mm), and the tension compensation gradient coefficient is k1, the value range of k1 is [0.35, 0.45], for example, it can be 0.35, 0.38, 0.4, 0.42, 0.45, etc.; The roll diameter is 570-650mm, and the tension compensation gradient coefficient gradually decreases from k1 to k2. The value range of k2 is [0.25, 0.35], for example, it can be 0.25, 0.28, 0.3, 0.32, 0.35, etc. Roll diameter 650-710mm, tension compensation gradient coefficient is k2; The coil diameter is ≥710mm (the minimum coil diameter is determined by the length of the steel coil, for example, it can be 2200mm), and the tension compensation gradient coefficient gradually decreases from k2 to k3. The value range of k3 is [0, 0.1], for example, it can be 0, 0.02, 0.05, 0.08, 0.1, etc. S3: Calculate the winding tension for different roll diameters based on the board width, board thickness, and tension compensation gradient coefficient.
[0018] The silicon steel paperless tube winding tension control method is preferably applicable to silicon steel plates with a width range of 1000mm-1300mm, such as 1000mm, 1100mm, 1200mm, 1300mm, etc.; and a thickness range of 0.30mm-0.18mm, such as 0.30mm, 0.27mm, 0.23mm, 0.20mm, 0.18mm, etc., but other plate widths and thicknesses are not excluded.
[0019] In step S2, the tension compensation gradient coefficient is preferably reduced at a constant rate (the relationship between coil diameter and tension compensation gradient coefficient is a downward sloping straight line), but other non-constant rate reduction methods are not excluded. Maintaining a constant tension compensation gradient coefficient between 650-710 mm of coil diameter establishes a steady state in the middle of the coil, giving it a certain compressive strength.
[0020] In step S3, the specific relationship between the winding tension and the plate width, plate thickness, and tension compensation gradient coefficient is shown in equation (I): (I); Where F is the winding tension in kg; d is the plate width in mm; h is the plate thickness in mm; k is the tension compensation gradient coefficient; E is the radial elastic modulus of the steel coil, taken as 210000 MPa; Rp0.2 is the yield strength, taken as 310 MPa; s is the residual deformation, taken as 6-7 mm; ε is the correction coefficient, taken as 0.01.
[0021] Based on the above tension control method, the present invention provides a method for winding silicon steel paperless tubes, which may specifically include the following steps: SS1: Use a winding aid belt to wind the coil. When the coil diameter reaches 570mm, start the offset process. SS2: After winding, align the innermost strip of the steel coil tightly with the second coil and secure it with tape. Then, proceed with normal hoisting and packaging.
[0022] Preferably, before step SS1, an anti-slip treatment is performed on the surface of the winding drum. For example, a coating containing anti-slip particles (such as polyurethane particles) can be sprayed, or an anti-slip drum made of rubber can be installed to provide a higher surface roughness so that there is sufficient friction when the steel coil comes into contact with the drum.
[0023] In step SS1, a winding aid belt is used for winding. The interval from the completion of the first turn to the withdrawal of the winding aid belt is approximately 30-50 seconds. At this time, the roll diameter is approximately 530-545 mm. The inner winding tension of this roll is at its maximum. The winding aid belt is working, which ensures that the inner roll is tighter and that no creases appear on the inner roll when it leaves the machine. The winding speed generally does not exceed 165 m / min.
[0024] The staggered edge process is adopted for coil diameters of 570mm primarily because the edge profile of the steel strip is poor. During winding, the radial pressure at the edge is greater than that at the center of the strip along the width direction. Without the staggered edge process, edge breakage is likely to occur, leading to increased waste at the edges. At this point, the compressive strength generated by the inner coil is close to that provided by the paper tube when using a paper tube, ensuring the stability of the paper-tube-less steel coil during winding, unwinding, hoisting, and transportation. Therefore, as the coil diameter increases, the control tension gradually decreases.
[0025] This invention also provides a silicon steel paperless tube winding device, including a winding machine and a tension control system. The tension control system is used to implement the above-mentioned silicon steel paperless tube winding tension control method, and mainly includes: The detection module is used to detect the width, thickness, and roll diameter of silicon steel. The control module calculates the winding tension based on the detection data from the detection module and transmits the calculation results to the winding machine.
[0026] The detection module can use conventional sensors, and during the actual winding process, the width and thickness information of the silicon steel can be directly obtained from the production equipment. The control module can use a PLC (Programmable Logic Controller), whose controlled object is the winding machine. It is conceivable that, based on the winding tension calculation requirements, the control module will incorporate the correspondence between winding tension and plate width, plate thickness, and tension compensation gradient coefficient, as well as the correspondence between roll diameter and tension compensation gradient coefficient.
[0027] In addition, the control system should also include some conventional power supply modules, human-machine interaction modules, etc.
[0028] The following uses finished silicon steel coils with thicknesses of 0.27mm, 0.23mm, and 0.20mm as examples. The corresponding tension is calculated based on different plate widths, thicknesses, and coil diameters. Under this tension, finished silicon steel coils with thicknesses of 0.27mm, 0.23mm, and 0.20mm can be wound without the use of paper tubes. Example 1
[0029] The finished silicon steel coil has a thickness of 0.27mm, a width of 1210mm, and a winding speed of 125m / min.
[0030] When winding without using paper tubes, the tension gradient is set as follows: for a winding diameter of 508-570 mm, the tension is 1360 kg (k1 is 0.35); for a winding diameter of 570-650 mm, the tension gradually decreases from 1360 kg (at a constant rate of decrease, the same below) to 1260 kg (k2 is 0.25); for a winding diameter of 650-710 mm, the tension is 1260 kg; and for a winding diameter of 710-2200 mm, the tension gradually decreases from 1260 kg to 1000 kg (k3 is 0). Under this process, the resulting finished silicon steel coil is as follows: Figure 1 As shown, the inner circle is flat and wrinkle-free. Example 2
[0031] The finished silicon steel coil has a thickness of 0.23mm, a width of 1210mm, and a winding speed of 125m / min.
[0032] When not using paper tubes for winding, the tension gradient is set as follows: when the winding diameter is ≤570 mm, the tension is 1190 kg (k1 is 0.38); when the winding diameter is 570-650 mm, the tension gradually decreases from 1190 kg to 1110 kg (k2 is 0.28); when the winding diameter is 650-710 mm, the tension is 1110 kg; and when the winding diameter is 710-2200 mm, the tension gradually decreases from 1110 kg to 850 kg (k3 is 0). Under this process, the resulting finished silicon steel coil is as follows: Figure 2 As shown, the inner circle is flat and wrinkle-free. Example 3
[0033] The finished silicon steel coil has a thickness of 0.20mm, a width of 1210mm, and a winding speed of 125m / min.
[0034] When not using paper tubes for winding, the tension gradient is set as follows: For a winding diameter of 508-570 mm, the tension is 1015 kg (k1 = 0.38); for a winding diameter of 570-650 mm, the tension gradually decreases from 1015 kg to 980 kg (k2 = 0.33); for a winding diameter of 650-710 mm, the tension is 980 kg; and for a winding diameter of 710-2200 mm, the tension gradually decreases from 980 kg to 750 kg (k3 = 0.02). Under this process, the resulting finished silicon steel coil is as follows: Figure 3 As shown, the inner circle is flat and wrinkle-free. Comparative Example 1
[0035] The finished silicon steel coil has a thickness of 0.20mm, a width of 1210mm, and a winding speed of 125m / min.
[0036] When winding without using a paper tube, the winding tension is set to a constant 1000 kg according to the tension standard with a paper tube. The resulting finished silicon steel coil is as follows: Figure 4 As shown, it can be seen that the inner ring of the steel coil has collapsed.
[0037] In summary, the winding tension control method of the present invention can achieve paperless winding, reduce production costs, and improve production efficiency.
[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A method of controlling the winding tension of a silicon steel without a paper tube, characterized by, The method comprises the following steps: S1: obtaining the plate width and thickness of the silicon steel; S2: obtaining the tension compensation gradient coefficient of different coil diameters according to the following corresponding relationship: coil diameter ≤ 570 mm, the tension compensation gradient coefficient is k1, and the value range of k1 is [0.35, 0.45]; coil diameter 570-650 mm, the tension compensation gradient coefficient gradually decreases from k1 to k2, and the value range of k2 is [0.25, 0.35]; coil diameter 650-710 mm, the tension compensation gradient coefficient is k2; coil diameter ≥ 710 mm, the tension compensation gradient coefficient gradually decreases from k2 to k3, and the value range of k3 is [0, 0.1]; S3: calculating the winding tension under different coil diameters according to the plate width, plate thickness and tension compensation gradient coefficient.
2. The method of paperless can winding tension control of silicon steel as claimed in claim 1, wherein, The plate width of the silicon steel is 1000 mm-1300 mm, and the plate thickness is 0.30 mm-0.18 mm.
3. The method of paperless can winding tension control of silicon steel as claimed in claim 1 or 2, characterized in that, In the step S3, the corresponding relationship between the winding tension and the plate width, plate thickness and tension compensation gradient coefficient is shown in formula (I): （I）； Wherein, F is the winding tension, the unit is kg; d is the plate width, the unit is mm; h is the plate thickness, the unit is mm; k is the tension compensation gradient coefficient; E is the coil diameter elastic modulus, taking 210000 MPa; Rp0.2 is the yield strength, taking 310 MPa; s is the residual deformation, taking 6-7 mm; ε is the correction coefficient, taking 0.
01.
4. A method of paperless canning of silicon steel characterized by, The silicon steel paperless drum winding tension control method of any one of claims 1-3 is adopted.
5. The method of paperless canning of silicon steel as claimed in claim 4, wherein, The method comprises the following steps: SS1: using a winding belt to wind, and when the coil diameter reaches 570 mm, starting to perform the edge misalignment process; SS2: after winding is completed, fixing the innermost circle of the steel belt with adhesive tape.
6. The method of paperless canning of silicon steel as claimed in claim 4, wherein, Before the step SS1, the method further comprises the step of performing anti-skid treatment on the surface of the winding machine.
7. A paperless can winding device for silicon steel characterized by, The method comprises a winding machine and a tension control system for realizing the silicon steel paperless drum winding tension control method of any one of claims 1-3, comprising: a detection module for detecting the plate width, plate thickness and coil diameter of the silicon steel; a control module for receiving the detection data of the detection module and performing winding tension calculation, and transmitting the calculation result to the winding machine.