Tensioning device constant tension control device
By introducing a constant tension control device into the magnetic core stretching equipment, and using a tension sensor and controller to adjust the motor speed in real time, the problem of unstable performance of the magnetic core stretching equipment is solved, stable tension control is achieved, tape breakage is avoided, and stretching efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HERO MAGNETIC DEV CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-02
AI Technical Summary
Common magnetic core stretching equipment cannot adjust the tension in real time, resulting in unstable performance. It requires frequent adjustments to the tension configuration and is prone to problems such as material breakage and strip breakage.
A constant tension control device is adopted, which uses tension sensors to detect the tension on both sides of the strip, and the constant tension controller calculates the adjustment amount based on the difference between the target tension value and the actual tension, and controls the motor speed difference to stabilize the tension.
This improved the performance stability of the magnetic core stretching process, avoided problems such as strip breakage and material breakage, and increased stretching efficiency.
Smart Images
Figure CN224309311U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic core tension control technology, and in particular to a constant tension control device for tensioning equipment. Background Technology
[0002] Stretching magnetic cores is done to improve their magnetic and mechanical properties, making them more suitable for specific applications. The stretching process can orient the magnetic domains in the magnetic material, thereby increasing the material's permeability. This is very important for manufacturing high-performance inductors, transformers, and other electromagnetic devices. At the same time, the stretching process can make the internal structure of the magnetic core material more uniform, reduce hysteresis loss and eddy current loss, and improve energy conversion efficiency. Stretching equipment can be used to stretch magnetic cores.
[0003] Common magnetic core stretching equipment is slow, averaging five to ten meters per minute. Because the tension cannot be adjusted in real time, it is prone to performance fluctuations and instability. Different materials and process requirements may require different tension settings, and each adjustment requires reconfiguration, making tension counterweight troublesome. If the tension is too high, it may cause the material to be overstretched or even break. Conversely, if the tension is insufficient, it may cause the material to loosen, form wrinkles or get stuck, resulting in serious material breakage and strip breakage.
[0004] Therefore, the aforementioned magnetic core stretching equipment is prone to performance instability, and adjustments require reconfiguration of the tension, making tension counterweighting troublesome and prone to material breakage and strip breakage. There is an urgent need to design a new type of constant tension control device for stretching equipment. Utility Model Content
[0005] To overcome the common problems of unstable performance caused by magnetic core stretching equipment, adjustments require reconfiguration of tension, making tension counterweight troublesome and prone to material breakage and belt breakage.
[0006] The technical solution of this utility model is as follows: a constant tension control device for a stretching equipment, including a base plate; it also includes a motor, a lead screw, a moving block, a tension sensor, a motor, a lead screw, a moving block, a tension sensor, and a constant tension controller. The upper end of the base plate is equipped with a motor, the output end of which is connected to a lead screw, the surface of which is threadedly connected to a moving block, the upper surface of which is connected to a mounting platform, and the tension sensor is installed in the mounting groove of the mounting platform. The upper end of the base plate is equipped with a motor, the output end of which is connected to a lead screw, the surface of which is threadedly connected to a moving block, the upper surface of which is connected to a mounting platform, and the tension sensor is installed in the mounting groove of the mounting platform. The upper surface of the base plate is equipped with a constant tension controller.
[0007] Preferably, motor one drives lead screw one to rotate. Lead screw one pushes moving block one to move linearly through the threads on its surface. Moving block one moves with the rotation of lead screw one, driving mounting platform one mounted on it. Tension sensor one is used to detect the tension on one side of the strip. Motor two drives lead screw two to rotate. Lead screw two pushes moving block two to move linearly through the threads on its surface. Moving block two moves with the rotation of lead screw two, driving mounting platform two mounted on it. Tension sensor two is used to detect the tension on the other side of the strip. Constant tension controller is responsible for receiving data from tension sensor one and tension sensor two, and adjusting the working state of motor one and motor two accordingly to maintain the set tension value. The constant tension controller calculates the required adjustment amount based on the difference between the preset target tension value and the actual detected tension value, and adjusts the tension requirement of the strip by controlling the speed difference between motor one and motor two.
[0008] Preferably, a fixing plate is connected to the right end surface of the base plate, and two support plates are provided on the upper end surface of the fixing plate.
[0009] Preferably, an unwinding roller is rotatably connected between the two support plates, and the surface of the unwinding roller is wound with the magnetic core body.
[0010] Preferably, the upper surface of the base plate is provided with two fixing blocks, and a guide roller is rotatably connected between the two fixing blocks.
[0011] Preferably, two slide rails are installed on the upper surface of the base plate, and a sliding block is slidably connected to the surface of each slide rail. The two sliding blocks are connected to the lower surface of the mounting platform.
[0012] Preferably, two slide rails are installed on the upper surface of the base plate, and two sliding blocks are slidably connected to the surfaces of the two slide rails. The two sliding blocks are connected to the lower surface of the mounting platform.
[0013] Preferably, a fixed frame is installed on the upper end of both mounting platform one and mounting platform two. An electric push rod is installed on the upper surface of the fixed frame. The output end of the electric push rod is connected to a pressure plate. A rubber pad is fitted on the lower surface of the pressure plate.
[0014] The beneficial effects of this utility model are:
[0015] 1. Input the target tension value into the constant tension controller, start the device, and motors one and two will start running, driving their respective moving blocks one and two to make initial position adjustments. Tension sensors one and two monitor the actual tension on both sides of the strip in real time and feed the data back to the constant tension controller. The constant tension controller receives and processes the data fed back by the tension sensors. If there is a deviation between the actual tension and the target tension, it calculates the required adjustment amount. Based on the calculation results, it adjusts the speed and direction of motors one and two respectively, so that the speed difference between motors one and two changes, thereby changing the tension on the strip, restoring the tension to the set value, improving performance stability, avoiding strip breakage and material breakage problems, and improving stretching efficiency. Attached Figure Description
[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the constant tension control device for the tensioning equipment of this utility model.
[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the constant tension controller of the tensioning equipment constant tension control device of this utility model.
[0018] Figure 3 The diagram shown is a three-dimensional structural schematic of the tension sensor location of the constant tension control device for the tensioning equipment of this utility model.
[0019] Figure 4 The diagram shown is a three-dimensional structural schematic of the tension sensor location of the constant tension control device for the tensioning equipment of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Fixing plate; 3. Support plate; 4. Unwinding roller; 5. Magnetic core body; 6. Fixing block; 7. Guide roller; 8. Slide rail one; 9. Sliding block one; 10. Mounting platform one; 11. Motor one; 12. Lead screw one; 13. Moving block one; 14. Tension sensor one; 15. Slide rail two; 16. Sliding block two; 17. Mounting platform two; 18. Motor two; 19. Lead screw two; 20. Moving block two; 21. Tension sensor two; 22. Fixing frame; 23. Electric push rod; 24. Pressure plate; 25. Rubber pad; 26. Constant tension controller. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please see Figures 1-4This utility model provides an embodiment of a constant tension control device for a stretching equipment, including a base plate 1; it also includes a motor 11, a lead screw 12, a moving block 13, a tension sensor 14, a second motor 18, a second lead screw 19, a second moving block 20, a second tension sensor 21, and a constant tension controller 26. The upper end of the base plate 1 is equipped with the motor 11, and the output end of the motor 11 is connected to the lead screw 12. The surface of the lead screw 12 is threadedly connected to the moving block 13, and the upper surface of the moving block 13... A mounting platform 10 is connected, and a tension sensor 14 is installed in the mounting slot of the mounting platform 10. A motor 18 is installed on the upper end of the base plate 1, and a lead screw 19 is connected to the output end of the motor 18. A moving block 20 is threadedly connected to the surface of the lead screw 19, and a mounting platform 17 is connected to the upper surface of the moving block 20. A tension sensor 21 is installed in the mounting slot of the mounting platform 17, and a constant tension controller 26 is installed on the upper surface of the base plate 1. The motor 11 drives the lead screw 12 to rotate. A lead screw 12 pushes a moving block 13 linearly through its threaded surface. The moving block 13 moves with the rotation of the lead screw 12, driving the mounting platform 10 mounted on it. A tension sensor 14 is used to detect the tension on one side of the strip. A motor 18 drives a lead screw 19 to rotate. The lead screw 19 pushes a moving block 20 linearly through its threaded surface. The moving block 20 moves with the rotation of the lead screw 19, driving the mounting platform 17 mounted on it. A tension sensor 21 is used to detect the tension on the other side of the strip. A constant tension controller 26 receives data from tension sensors 14 and 21 and adjusts the working state of motors 11 and 18 accordingly to maintain the set tension value. The constant tension controller 26 calculates the required adjustment amount based on the difference between the preset target tension value and the actual detected tension value. The tension requirement of the strip is adjusted by controlling the speed difference between motors 11 and 18 through the constant tension controller 26.
[0023] Please see Figures 1-2 In this embodiment, a fixing plate 2 is connected to the right end surface of the base plate 1, and two support plates 3 are provided on the upper end surface of the fixing plate 2. The fixing plate 2 provides a stable mounting platform for the support plates 3, and the support plates 3 provide necessary mechanical support for the unwinding roller 4, allowing the unwinding roller 4 to rotate freely. The unwinding roller 4 is rotatably connected between the two support plates 3. The surface of the unwinding roller 4 is wound with a magnetic core body 5, and the surface of the unwinding roller 4 is wound with the magnetic core body 5 to be processed, storing and gradually releasing the strip material into the subsequent processing stage. Two fixing blocks 6 are provided on the upper end surface of the base plate 1, and a guide roller 7 is rotatably connected between the two fixing blocks 6. The guide roller 7 guides the magnetic core body 5 released from the unwinding roller 4 to ensure that the strip material runs smoothly along the predetermined path and avoids deviation or twisting.
[0024] Please see Figures 1-4 In this embodiment, two slide rails 1-8 are installed on the upper surface of the base plate 1. Each slide rail 1-8 has a sliding block 1-9 slidably connected to its surface. The two sliding blocks 1-9 are connected to the lower surface of the mounting platform 10. The two slide rails 1-8 improve the stable movement of the mounting platform 10 and act as guides. The slide rails 1-8 provide a guide path for the sliding blocks 1-9, allowing the mounting platform 10 to move smoothly and stably in a specific direction. Two slide rails 2-15 are also installed on the upper surface of the base plate 1. Each slide rail 2-15 has two sliding blocks 2-16 slidably connected to its surface. The two sliding blocks 2-16 are connected to the lower surface of the mounting platform 2-17. The slide rails 2-15 provide a guide path for the sliding blocks 2-16, allowing the mounting platform 2-17 to move smoothly and stably in a specific direction. The device allows for smooth and stable movement in a fixed direction. Both mounting platforms 10 and 17 have a fixed frame 22 installed at their upper ends. An electric push rod 23 is mounted on the upper surface of the fixed frame 22. The output end of the electric push rod 23 is connected to a pressure plate 24. A rubber pad 25 is fitted onto the lower surface of the pressure plate 24. When the equipment is not started or when pressure is not required on the strip, the electric push rod 23 is in a retracted state, the pressure plate 24 is raised, and there is no contact between the rubber pad 25 and the strip. When it is necessary to press the strip, the electric push rod 23 extends. As the electric push rod 23 extends, the pressure plate 24 gradually moves downward until the rubber pad 25 contacts the strip and applies appropriate pressure. The pressure plate 24 fixes the strip through the rubber pad 25, and the moving fixing mechanism performs the stretching operation on the strip.
[0025] During operation, motor 11 drives lead screw 12 to rotate. Lead screw 12, through its threaded surface, pushes moving block 13 in a linear motion. Moving block 13 moves with the rotation of lead screw 12, driving mounting platform 10 and tension sensor 14 mounted on it to detect the tension on one side of the strip. Motor 21 drives lead screw 19 to rotate. Lead screw 19, through its threaded surface, pushes moving block 20 in a linear motion. Moving block 20 moves with the rotation of lead screw 19, driving mounting platform 21 and tension sensor 21 mounted on it to detect the tension on one side of the strip. The constant tension controller 26 receives data from tension sensor 14 and tension sensor 21 on the other side of the strip and adjusts the working state of motor 11 and motor 28 accordingly to maintain the set tension value. The constant tension controller 26 calculates the required adjustment amount based on the difference between the preset target tension value and the actual detected tension value. The tension requirement of the strip is adjusted by controlling the speed difference between motor 11 and motor 28. The fixed plate 2 provides a stable mounting platform for the support plate 3, and the support plate 3 provides the necessary mechanical support for the unwinding roller 4. The support allows the unwinding roller 4 to rotate freely. The surface of the unwinding roller 4 is wound with the magnetic core body 5 to be processed, storing and gradually releasing the strip into subsequent processing stages. The guide roller 7 guides the magnetic core body 5 released from the unwinding roller 4, ensuring the strip runs smoothly along a predetermined path and avoiding deviation or twisting. Two slide rails 1 8 improve the stable movement of the mounting table 10, acting as guides. The slide rail 1 8 provides a guide path for the sliding block 9, allowing the mounting table 10 to move smoothly and stably in a specific direction. The slide rail 2 15 is designed for the sliding block 9. Block 2 16 provides a guide path, enabling mounting platform 2 17 to move smoothly and stably in a specific direction. When the equipment is not started or when pressure is not required on the strip, the electric push rod 23 is in a retracted state, the pressure plate 24 is raised, and the rubber pad 25 is not in contact with the strip. When it is necessary to press the strip, the electric push rod 23 begins to extend. As the electric push rod 23 extends, the pressure plate 24 gradually moves downward until the rubber pad 25 contacts the strip and applies appropriate pressure. The pressure plate 24 fixes the strip through the rubber pad 25, and the moving fixing mechanism performs the stretching work on the strip.
[0026] Through the above steps, the target tension value is input into the constant tension controller 26, the device is started, and motors 11 and 18 begin to run, driving their respective moving blocks 13 and 20 to make initial position adjustments. Tension sensors 14 and 21 monitor the actual tension on both sides of the strip in real time and feed the data back to the constant tension controller 26. The constant tension controller 26 receives and processes the data fed back by the tension sensors. If there is a deviation between the actual tension and the target tension, the required adjustment amount is calculated. Based on the calculation results, the speed and direction of motors 11 and 18 are adjusted respectively, so that the speed difference between motors 11 and 18 changes, thereby changing the tension on the strip, restoring the tension to the set value, improving performance stability, avoiding strip and material breakage problems, and improving stretching efficiency. This solves the common problems of unstable performance in magnetic core stretching equipment, which require reconfiguration of tension for adjustment, making tension counterweight troublesome and prone to material and strip breakage.
Claims
1. A constant tension control device for a tensioning machine, comprising a base plate (1); characterized in that: It also includes a motor (11), a lead screw (12), a moving block (13), a tension sensor (14), a motor (18), a lead screw (19), a moving block (20), a tension sensor (21), and a constant tension controller (26). The upper end of the base plate (1) is equipped with a motor (11), the output end of the motor (11) is connected to a lead screw (12), the surface of the lead screw (12) is threadedly connected to a moving block (13), and the upper surface of the moving block (13) is connected to a mounting platform. (10) Tension sensor 1 (14) is installed in the mounting slot of mounting platform 1 (10). Motor 2 (18) is installed at the upper end of base plate (1). The output end of motor 2 (18) is connected to lead screw 2 (19). Moving block 2 (20) is threadedly connected to the surface of lead screw 2 (19). Mounting platform 2 (17) is connected to the upper surface of moving block 2 (20). Tension sensor 2 (21) is installed in the mounting slot of mounting platform 2 (17). Constant tension controller (26) is installed on the upper surface of base plate (1).
2. The constant tension control device for a stretching equipment according to claim 1, characterized in that: A fixing plate (2) is connected to the right end surface of the base plate (1), and two support plates (3) are provided on the upper end surface of the fixing plate (2).
3. The constant tension control device for a stretching equipment according to claim 2, characterized in that: A unwinding roller (4) is rotatably connected between the two support plates (3), and the surface of the unwinding roller (4) is wound with a magnetic core body (5).
4. The constant tension control device for a stretching equipment according to claim 2, characterized in that: Two fixing blocks (6) are provided on the upper surface of the base plate (1), and a guide roller (7) is rotatably connected between the two fixing blocks (6).
5. The constant tension control device for a stretching equipment according to claim 4, characterized in that: Two slide rails (8) are installed on the upper surface of the base plate (1). Each slide rail (8) is slidably connected to a sliding block (9). The two sliding blocks (9) are connected to the lower surface of the mounting platform (10).
6. The constant tension control device for a stretching equipment according to claim 5, characterized in that: Two slide rails (15) are installed on the upper surface of the base plate (1). Two sliding blocks (16) are slidably connected to the surfaces of the two slide rails (15). The two sliding blocks (16) are connected to the lower surface of the mounting platform (17).
7. The constant tension control device for a stretching equipment according to claim 5, characterized in that: A fixed frame (22) is installed on the upper end of both mounting platform 1 (10) and mounting platform 2 (17). An electric push rod (23) is installed on the upper surface of the fixed frame (22). The output end of the electric push rod (23) is connected to a pressure plate (24). A rubber pad (25) is fitted on the lower surface of the pressure plate (24).