Non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism

Abstract

The present invention discloses a non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism, comprising a non-mechanical contact type excitation magnetic field constant tension output device, a roller bracket and a central tube, wherein the non-mechanical contact type excitation magnetic field constant tension output device comprises a first rotating shaft, a second rotating shaft, a tape reel, a first servo motor, a second servo motor, a bearing seat, a hysteresis stator, a hysteresis rotor, a tension rod and a rotating frame; the hysteresis stator is arranged on the bearing seat, and the hysteresis rotor cooperates with the hysteresis stator; the tension rod is connected to the output end of the hysteresis rotor; the rotating frame is fixed to the front end of the second rotating shaft; the tape reel is fixed to the front end of the first rotating shaft; the roller bracket is fixed to the rotating frame, and the first tape passing roller and the second tape passing roller are pivotally connected to the roller bracket; the first rotating shaft is a hollow shaft structure, and the central tube runs through the center of the first rotating shaft and the roller bracket for the core wire to be transported in the tube. The present invention can generate stable and accurate tape unwinding tension, ensure tape unwinding stability, and has a simpler and more compact structure.

Description

Technical Field

[0001] The invention relates to a constant tension taping machine, in particular to a non-mechanical contact type excitation magnetic field constant tension taping mechanism. Background Art

[0002] In the production process of cables, the core wire and the tape are first output separately. At the same time, the tape is adjusted by the tension mechanism and wrapped around the core wire with a certain tension, so that the core wire and the tape are combined to form a cable. The output process of the tape is output at a constant speed under a constant tension condition. Traditional tape wrapping machines use magnetic powder clutches or other tension elements as tension elements. However, the magnetic powder clutch has the disadvantages of inaccurate force and the need to add magnetic powder at intervals. The magnetic powder clutch will generate a lot of heat due to friction, and high temperature will in turn affect the accuracy of the magnetic powder clutch. In addition, after the output of the magnetic powder clutch, a synchronous belt needs to be used to drive the rotating shaft, which makes the control of the tape tension not stable and accurate enough, which is not conducive to the control of the tape wrapping. Summary of the invention

[0003] The object of the present invention is to provide a non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism which can generate stable and accurate tape unwinding tension, ensure tape unwinding stability and has a simpler and more compact structure.

[0004] In order to achieve the above-mentioned purpose, the non-mechanical contact type excitation magnetic field constant tension wrapping mechanism provided by the present invention includes a non-mechanical contact type excitation magnetic field constant tension output device, a roller bracket and a center tube, and the non-mechanical contact type excitation magnetic field constant tension output device includes a first rotating shaft, a second rotating shaft, a tape reel, a first servo motor, a second servo motor, a bearing seat, a hysteresis stator, a hysteresis rotor, a tension rod and a rotating frame; the second rotating shaft is rotatably sleeved on the outside of the first rotating shaft; the first servo motor drives the first rotating shaft to rotate, and the second servo motor drives the second rotating shaft to rotate; the bearing seat is sleeved on the outside of the second rotating shaft; the hysteresis stator is arranged on the bearing seat and sleeved on the outside of the second rotating shaft, and the hysteresis rotor cooperates with the hysteresis stator and is rotatably sleeved on the outside of the second rotating shaft; the first rotating shaft, the second rotating shaft, the tape reel, the bearing seat, the hysteresis stator The roller and the hysteresis rotor are coaxially arranged; the tension rod is connected to the output end of the hysteresis rotor; the rotating frame is fixed to the front end of the second rotating shaft; the tape reel is fixed to the front end of the first rotating shaft; the roller bracket is fixed to the rotating frame and is located at the front end of the rotating frame, and the first tape roller and the second tape roller are pivotally connected to the roller bracket, the first tape roller is arranged on the outer periphery of the roller bracket, the second tape roller and the first tape roller are in the same diameter direction of the roller bracket and deviate from the center of the roller bracket; the first rotating shaft is a hollow shaft structure, and the center tube passes through the first rotating shaft and the center of the roller bracket for the core wire to be transported in the tube; the tape led out from the tape reel can be wrapped around the rotating frame, the tension rod, the first tape roller and the second tape roller in turn and then wrapped around the core wire.

[0005] Compared with the prior art, the present invention arranges a hysteresis stator and a hysteresis rotor outside the second rotating shaft, so that the hysteresis rotor cooperates with the hysteresis stator to form a hysteresis brake. When the coil of the hysteresis stator is energized, since the hysteresis rotor does not contact the hysteresis stator during the rotation process, it can achieve non-contact output torque, generate a constant tension on the wrapping tape, and thus achieve stable output of unwinding tension. Moreover, no friction occurs between the hysteresis rotor and the hysteresis stator, avoiding the generation of a large amount of heat, thereby ensuring the accuracy of the torque output by the hysteresis rotor; and by inputting different currents to the hysteresis stator, different output torques can be obtained, thereby achieving the purpose of adjusting the tension, and it is more convenient to use. In addition, the hysteresis rotor and the hysteresis stator are both sleeved on the second rotating shaft. Compared with the traditional form of using a magnetic powder clutch, there is no need to frequently add magnetic powder, and there is no need to use a synchronous belt such as a belt and a pulley to drive the rotating shaft. It is more convenient to use, has a simpler structure, and a more reasonable and compact layout.

[0006] Preferably, the non-mechanical contact type excitation magnetic field constant tension output device also includes a displacement sensor and a displacement sensing block. The displacement sensor is arranged on the rotating frame, and the displacement sensing block is arranged at the output end of the hysteresis rotor and can sense each other with the displacement sensor. By using the displacement sensor and the displacement sensing block to detect the displacement change between the rotating frame and the tension rod, the change of the tape unwinding speed can be indirectly detected. When a positive displacement occurs between the rotating frame and the tension rod, that is, the distance between the two becomes smaller, it means that the tape unwinding speed of the reel is too slow. Conversely, it means that the tape unwinding speed of the reel is too fast. Therefore, by designing the displacement sensor and the displacement sensing block, the displacement sensor can send a signal to the control system and control the unwinding speed of the first servo motor, so that the tape can be delivered at a uniform speed and maintain a constant unwinding tension.

[0007] Specifically, the non-mechanical contact type excitation magnetic field constant tension output device further includes a conductive ring and a conductive terminal, the conductive ring is sleeved and fixed on the second rotating shaft, the conductive terminal is in sliding electrical contact with the conductive ring, and the conductive ring is electrically connected to the displacement sensor. Since the displacement sensor rotates with the rotating frame and cannot be directly connected through a wire, the sliding contact between the conductive ring and the conductive terminal can not only realize the rotation of the rotating frame, but also achieve the purpose of electrical connection, effectively solving the problem of electrical connection, making the structure simpler and more convenient to use.

[0008] Preferably, a first transmission mechanism is provided between the first servo motor and the first rotating shaft.

[0009] Specifically, the first transmission mechanism includes a first driving pulley, a first driven pulley and a first belt, the first driving pulley is arranged at the output end of the first servo motor, the first driven pulley is arranged on the first rotating shaft, and the first belt is wound around the first driving pulley and the first driven pulley.

[0010] Preferably, a second transmission mechanism is provided between the second servo motor and the second rotating shaft.

[0011] Specifically, the second transmission mechanism includes a second driving pulley, a second driven pulley and a second belt, the second driving pulley is arranged at the output end of the second servo motor, the second driven pulley is arranged on the second rotating shaft, and the second belt is wound around the second driving pulley and the second driven pulley.

[0012] Preferably, the rotating frame is provided with a turning roller, and the strap can be led out from the tension rod and then bypass the turning roller. The turning roller can change the direction of the strap leading out, thereby making the strap output more accurate.

[0013] Preferably, the rotating frame is provided with a tape outlet roller, the tape outlet roller is located at the outer periphery of the tape reel, and the tension rod is located at the outer periphery of the tape outlet roller. In this way, the space around the tape reel can be effectively utilized, the compactness of the structure of the entire device can be improved, and the volume of the entire device can be smaller.

[0014] Preferably, a center hole is provided at the center of the roller bracket, and the center tube passes through the center hole; and a tape eye mold for core wire output is provided at the front end of the center tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism of the present invention.

[0016] Figure 2 It is an axial cross-sectional view of the non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism of the present invention.

[0017] Figure 3 It is a left view of the non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism of the present invention.

[0018] Figure 4 It is a structural diagram of a roller support of a non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism of the present invention. DETAILED DESCRIPTION

[0019] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0020] like Figure 1 to Figure 2As shown, the non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism 100 of the present invention is suitable for unwinding the tape 200 and wrapping the core wire 300 at the same time, and includes a non-mechanical contact type excitation magnetic field constant tension output device 1, a roller bracket 2 and a central tube 4. The non-mechanical contact type excitation magnetic field constant tension output device 1 is arranged on a frame 3, and includes a first rotating shaft 11, a second rotating shaft 12, a tape reel 13, a first servo motor 14, a second servo motor 15, a bearing seat 16, a hysteresis stator 17, a hysteresis rotor 18, a tension rod 19 and a rotating frame 110. The tape reel 13 of the present application is wound around the tape 200. The second rotating shaft 12 is a hollow shaft with two ends through, and the second rotating shaft 12 is rotatably sleeved on the outside of the first rotating shaft 11 through bearings installed at the front and rear ends of the inner hole. The front and rear ends of the first rotating shaft 11 both extend out of the second rotating shaft 12. The tape reel 13 is fixed to the front end of the first rotating shaft 11. The first servo motor 14 is arranged on the frame 3 and drives the first rotating shaft 11 to rotate, and the second servo motor 15 is arranged on the frame 3 and drives the second rotating shaft 12 to rotate; the bearing seat 16 is sleeved on the outside of the second rotating shaft 12; bearings are arranged between the front and rear ends of the second rotating shaft 12 and the bearing seat 16, and the hysteresis stator 17 is arranged at the front end of the bearing seat 16 and sleeved on the outside of the second rotating shaft 12 through the bearing. The hysteresis stator 17 has a rotation gap inside, and the hysteresis rotor 18 is rotatably sleeved on the outside of the second rotating shaft 12 through the bearing and is located at the front end of the second rotating shaft 12. The hysteresis rotor 18 cooperates with the hysteresis stator 17 and can rotate in the rotation gap. The first rotating shaft 11, the second rotating shaft 12, the reel 13, the bearing seat 16, the hysteresis stator 17 and the hysteresis rotor 18 are coaxially arranged. The output end of the hysteresis rotor 18 has a turntable 181, and the tension rod 19 is connected to the turntable 181. The central axis of the tension rod 19 deviates from the central axis of the first rotating shaft 11 and is parallel to the central axis of the first rotating shaft 11, and the tension rod 19 has a rotatable cylinder to facilitate the winding and conveying of the tape 200. The hysteresis stator 17 and the hysteresis rotor 18 form a hysteresis brake, which can output torque after power is turned on so that the tension rod 19 applies a constant unwinding tension to the tape 200. The rotating frame 110 is fixed to the front end of the second rotating shaft 12 and is located at the front end of the turntable 181. The rotating frame 110 has a front and a rear plate, and a tape outlet roller 111 is arranged between the front and rear plates. The tape outlet roller 111 deviates from the central axis of the first rotating shaft 11 and is located on the outer periphery of the tape reel 13, and the central axis of the tape outlet roller 111 is parallel to the central axis of the first rotating shaft 11. The tension rod 19 is located at the outer periphery of the tape outlet roller 111; this can effectively utilize the space around the tape reel 13, improve the structural compactness of the entire device, and make the volume of the entire device smaller.The rotating frame 110 is also provided with a turning roller 112, and the central axis of the turning roller 112 is perpendicular to the central axis of the rotating frame 110. The turning roller 112 can change the lead-out direction of the wrapping tape 200, thereby making the wrapping tape 200 output more accurately. The rotating frame 110 is also provided with two blocks (not shown in the figure), and the tension rod 19 is located between the two blocks, and the block can prevent the tension rod 19 from swinging excessively. When the tension rod 19 is located in the middle position of the two blocks, the maximum angle of the central angle between the tension rod 19 and any of the blocks is 60 degrees, preferably 45 degrees.

[0021] See also Figure 3 and Figure 4 , the roller bracket 2 is fixed to the front end of the front plate of the rotating frame 110. The roller bracket 2 is pivotally connected with a first tape roller 21 and a second tape roller 22. The first tape roller 21 is arranged on the outer periphery of the roller bracket 2. The second tape roller 22 and the first tape roller 21 are located in the same diameter direction of the roller bracket 2 and deviate from the center of the roller bracket 2. More specifically, the roller bracket 2 is provided with an elongated groove 2a. The first tape roller 21 is slidably arranged in the elongated groove 2a to adjust its distance relative to the center of the roller bracket 2, so as to adjust the tape outlet angle of the tape relative to the core wire 300. The tape 200 led out from the tape reel 13 is led forward after passing through the tape outlet roller 111, the tension rod 19, the steering roller 112, the first tape roller 21 and the second tape roller 22 in sequence. The first rotating shaft 11 is a hollow shaft structure, the center of the roller bracket 2 is provided with a center hole 23, the center tube 4 penetrates the first rotating shaft 11 and the center hole 23 of the roller bracket 2 for the core wire 300 to be transported in the tube; the center tube 4 is coaxially arranged with the first rotating shaft 11; the front end of the center tube 4 is provided with a tape eye mold 41 for outputting the core wire 300, the tape eye mold 41 can make the core wire 300 output more stably to ensure the accuracy of subsequent tape wrapping and improve the quality of tape wrapping. The tape 200 drawn from the tape reel 13 passes through the tape outlet roller 111, the tension rod 19, the steering roller 112, the first tape passing roller 21 and the second tape passing roller 22 in sequence and then wraps around the core wire 300.

[0022] Please refer to Figure 2The non-mechanical contact type excitation magnetic field constant tension output device 1 also includes a displacement sensor 113 and a displacement sensing block 114. The displacement sensor 113 is arranged on the rotating frame 110 and is located behind the rear plate of the rotating frame 110. The displacement sensing block 114 is arranged in front of the turntable 181 at the output end of the hysteresis rotor 18 and can be directly opposite to the displacement sensor 113, and the two can sense each other. The displacement sensor 113 and the displacement sensing block 114 are used to detect the displacement change between the rotating frame 110 and the tension rod 19, and the change of the unwinding speed can be indirectly detected. When the rotating frame 110 and the tension rod 19 rotate relative to each other, the displacement sensing block 114 produces a positive displacement relative to the displacement sensor 113, that is, when the distance between the two becomes smaller, it means that the unwinding speed of the tape reel 13 is too slow, and vice versa, it means that the unwinding speed of the wrapping tape 200 is too fast. Therefore, by designing the displacement sensor 113 and the displacement sensor block 114, the displacement sensor 113 can send a signal to the control system and control the output speed of the first servo motor 14, so as to control the unwinding speed, and further enable the wrapping tape 200 to be fed at a constant tension and at a uniform speed. In addition, the tension of the tension rod 19 on the wrapping tape 200 is determined by the input current of the hysteresis stator 17, so the tension of the tension rod 19 can be controlled by controlling the input current of the hysteresis stator 17, so as to ensure that the wrapping tape 200 is output at a constant tension.

[0023] For example Figure 2 As shown, the non-mechanical contact type excitation magnetic field constant tension output device 1 also includes a conductive ring 115 and a conductive terminal 116. The conductive ring 115 is sleeved and fixed on the rear end outer side of the second rotating shaft 12 and is insulated from the second rotating shaft 12. The conductive terminal 116 is connected to the bearing seat 16 or the frame 3, and the conductive terminal 116 is in sliding electrical contact with the conductive ring 115. The conductive terminal 116 is connected to the power supply or the control system; the conductive ring 115 extends along the second rotating shaft 12 through a wire and is electrically connected to the displacement sensor 113 to realize the power connection of the displacement sensor 113. Since the displacement sensor 113 rotates with the rotating frame 110 and cannot be directly connected from the outside through a wire, the conductive ring 115 is in sliding contact with the conductive terminal 116, so that it can rotate with the rotating frame 110 and achieve the purpose of electrical connection, which effectively solves the problem of electrical connection, makes the structure simpler and more convenient to use.

[0024] For example Figure 2As shown, a first transmission mechanism 117 is provided between the first servo motor 14 and the first rotating shaft 11. Specifically, the first transmission mechanism 117 comprises a first driving pulley 117a, a first driven pulley 117b and a first belt 117c, wherein the first driving pulley 117a is provided at the output end of the first servo motor 14, the first driven pulley 117b is provided at the rear end of the first rotating shaft 11, and the first belt 117c is wound around the first driving pulley 117a and the first driven pulley 117b.

[0025] For example Figure 2 As shown, a second transmission mechanism 118 is provided between the second servo motor 15 and the second rotating shaft 12. Specifically, the second transmission mechanism 118 comprises a second driving pulley 118a, a second driven pulley 118b and a second belt 118c, wherein the second driving pulley 118a is provided at the output end of the second servo motor 15, the second driven pulley 118b is provided at the rear end of the second rotating shaft 12, and the second belt 118c is wound around the second driving pulley 118a and the second driven pulley 118b.

[0026] Combining the above and Figure 2 and Figure 3 The working principle of the constant tension taping machine 100 of the present invention is described in detail below:

[0027] First, the core wire 300 is led forward along the central tube 4, so that the core wire 300 passes through the central tube 4 and the roller bracket 2 and is led forward from the central axis direction of the roller bracket 2. Then, the tape reel 13 fully wound with the tape 200 is installed at the front end of the first rotating shaft 11, and the tape 200 is led out and passes through the tape outlet roller 111, the tension rod 19, the turning roller 112, the first tape passing roller 21 and the second tape passing roller 22 in sequence. When unwinding the tape, the control system controls the first servo motor 14 to start, and the first servo motor 14 drives the first driving pulley 117a, and the first driving pulley 117a drives the first driven pulley 117b through the first belt 117c. The first driven pulley 117b drives the first rotating shaft 11 to rotate, and the first rotating shaft 11 drives the tape reel 13 to rotate to release the tape 200. At the same time, the control system passes a constant current corresponding to the required tension into the coil of the hysteresis stator 17, and at this time, the hysteresis rotor 18 generates a torque to drive the tension rod 19, thereby generating a constant tension on the wrapping tape 200 on the tension rod 19. In addition, the control system controls the second servo motor 15 and the first servo motor 14 to start simultaneously, and the second servo motor 15 drives the second active pulley 118a, and the second active pulley 118a drives the second driven pulley 118b through the second belt 118c. The second driven pulley 118b drives the second rotating shaft 12 to rotate, and the second rotating shaft 12 drives the rotating frame 110 to rotate, and the tape output roller 111 of the rotating frame 110 rotates circumferentially around the central axis of the rotating frame 110, and at the same time, the tension rod 19 is pulled under the winding action of the wrapping tape 200. At this time, the wrapping tape 200 is output with a constant tension, and is wrapped on the core wire 300 after passing through the turning roller 112, the first tape passing roller 21 and the second tape roller 22. The core wire 300 is continuously led forward, and the wrapping tape is also continuously output and wraps the core wire 300, eventually forming a cable with an insulating outer layer.

[0028] When the output speed of the tape 200 slows down, the tension rod 19 will swing. At this time, the displacement sensing block 114 moves relative to the displacement sensor 113 to generate a positive displacement (the distance between the two becomes smaller, the displacement sensor 113 can detect it and send a signal to the control system, the control system controls the output speed of the first servo motor 14 through the signal, so that the output speed is accelerated, so as to achieve the purpose of accelerating the unwinding speed of the tape reel 13, thereby maintaining the constant and accurate unwinding tension, and the tape 200 is output at a uniform speed. Conversely, when the output speed of the tape 200 increases, the tension rod 19 will swing in the opposite direction. At this time, the displacement sensing block 114 moves relative to the displacement sensor 113 to generate a negative displacement (the distance between the two becomes larger), the displacement sensor 113 can detect it and send a signal to the control system, the control system controls the output speed of the first servo motor 14 through the signal, so that the output speed is slowed down, so as to achieve the purpose of slowing down the unwinding speed of the tape reel 13, thereby maintaining the constant unwinding tension, and the tape 200 is output at a uniform speed.

[0029] Compared with the prior art, the present invention arranges a hysteresis stator 17 and a hysteresis rotor 18 outside the second rotating shaft 12, so that the hysteresis rotor 18 cooperates with the hysteresis stator 17 to form a hysteresis brake. When the coil of the hysteresis stator 17 is energized, the hysteresis rotor 18 does not contact the hysteresis stator 17 during rotation, thereby achieving non-contact output of torque. Therefore, a constant tension can be generated on the wrapping tape 200, thereby achieving stable output of tension; moreover, no friction will occur between the hysteresis rotor 18 and the hysteresis stator 17, thereby avoiding the generation of a large amount of heat, thereby ensuring the accuracy of the torque output by the hysteresis rotor; and, by inputting different current sizes into the hysteresis stator 17, different tensions can be obtained, which is suitable for unwinding different wrapping tapes and is more convenient to use. In addition, the hysteresis rotor 18 and the hysteresis stator 17 are both sleeved on the second rotating shaft 12. Compared with the traditional form of using a magnetic powder clutch, there is no need to frequently add magnetic powder, and there is no need to use synchronous belts such as belts and pulleys to drive the rotating shaft. It is more convenient to use, has a simpler structure, and a more reasonable and compact layout.

[0030] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A non-mechanical contact type excitation magnetic field constant tension wrapping mechanism, characterized in that: It comprises a non-mechanical contact type excitation magnetic field constant tension output device, a roller bracket and a central tube, wherein the non-mechanical contact type excitation magnetic field constant tension output device comprises a first rotating shaft, a second rotating shaft, a tape reel, a first servo motor, a second servo motor, a bearing seat, a hysteresis stator, a hysteresis rotor, a tension rod and a rotating frame; the second rotating shaft is rotatably sleeved on the outside of the first rotating shaft; the first servo motor drives the first rotating shaft to rotate, and the second servo motor drives the second rotating shaft to rotate; the bearing seat is sleeved on the outside of the second rotating shaft; the hysteresis stator is arranged on the bearing seat and sleeved on the outside of the second rotating shaft, and the hysteresis rotor cooperates with the hysteresis stator and is rotatably sleeved on the outside of the second rotating shaft; the first rotating shaft, the second rotating shaft, the tape reel, the bearing seat, the hysteresis stator and the hysteresis rotor are coaxially arranged; the tension The rod is connected to the output end of the hysteresis rotor; the rotating frame is fixed to the front end of the second rotating shaft; the tape reel is fixed to the front end of the first rotating shaft; the roller bracket is fixed to the rotating frame and is located at the front end of the rotating frame, and the first tape roller and the second tape roller are pivotally connected to the roller bracket, the first tape roller is arranged on the outer periphery of the roller bracket, the second tape roller and the first tape roller are in the same diameter direction of the roller bracket and deviate from the center of the roller bracket; the first rotating shaft is a hollow shaft structure, and the center tube passes through the first rotating shaft and the center of the roller bracket for the core wire to be transported in the tube; the wrapped tape led out from the tape reel can be wrapped around the rotating frame, the tension rod, the first tape roller and the second tape roller in turn and then wrapped on the core wire.

2. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: The non-mechanical contact type excitation magnetic field constant tension output device also includes a displacement sensor and a displacement sensing block. The displacement sensor is arranged on the rotating frame, and the displacement sensing block is arranged at the output end of the hysteresis rotor and can sense each other with the displacement sensor.

3. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 2, characterized in that: The non-mechanical contact type excitation magnetic field constant tension output device also includes a conductive ring and a conductive terminal. The conductive ring is sleeved and fixed on the second rotating shaft. The conductive terminal is in sliding electrical contact with the conductive ring. The conductive ring is electrically connected to the displacement sensor.

4. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: A first transmission mechanism is provided between the first servo motor and the first rotating shaft.

5. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 4, characterized in that: The first transmission mechanism includes a first driving pulley, a first driven pulley and a first belt, the first driving pulley is arranged at the output end of the first servo motor, the first driven pulley is arranged on the first rotating shaft, and the first belt is wound around the first driving pulley and the first driven pulley.

6. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: A second transmission mechanism is provided between the second servo motor and the second rotating shaft.

7. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 6, characterized in that: The second transmission mechanism includes a second driving pulley, a second driven pulley and a second belt, the second driving pulley is arranged at the output end of the second servo motor, the second driven pulley is arranged on the second rotating shaft, and the second belt is wound around the second driving pulley and the second driven pulley.

8. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: The rotating frame is provided with a turning roller, and the wrapping belt can be led out from the tension rod and then pass around the turning roller.

9. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: The rotating frame is provided with a tape-out roller; the tape-out roller is located at the outer periphery of the tape reel, and the tension rod is located at the outer periphery of the tape-out roller.

10. The non-mechanical contact type excitation magnetic field constant tension tape wrapping mechanism according to claim 1, characterized in that: A center hole is arranged at the center of the roller bracket, and the center tube passes through the center hole; and a tape eye mold for outputting the core wire is arranged at the front end of the center tube.

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