Tensioning device and winding machine

Abstract

The present application relates to the technical field of winding machines, and in particular to a tensioning device and a winding machine, wherein the tensioning device includes a rotating faceplate, a central shaft, a connecting seat, a transmission connecting rod, and a tensioning member. The rotating faceplate is used to place a winding skeleton. The central shaft is passed through the center of the rotating faceplate and drives the rotating faceplate to rotate by rotating around its own axis. The connecting seat is sleeved on the central shaft and rotates with the central shaft. The transmission connecting rod is evenly arranged along the circumference of the connecting seat, and one end is rotationally connected to the connecting seat. The tensioning member is arranged on the rotating faceplate and rotationally connected to the other end of the transmission connecting rod. The tensioning member can move along its radial direction to abut or separate from the inner wall of the winding skeleton during the rotation of the rotating faceplate. By making the tensioning member abut against the inner wall of the winding skeleton, the present application can ensure that the tension of the strip at different positions in the winding process changes equally, thereby preventing damage to the strip and facilitating the improvement of the superconducting performance of the high-temperature superconducting strip.

Description

Technical Field

[0001] The present application relates to the technical field of winding machines, and in particular to a tensioning device and a winding machine. Background Art

[0002] A winding machine is a device used to manufacture coils. It winds strip material into a specific shape and is commonly used in the manufacture of electrical equipment such as motors, transformers, inductors, and superconducting magnets. The winding machine utilizes a motor to drive the rotation of a winding shaft, typically mounted with a coil bobbin. As the shaft rotates, the wire is stretched. A control system regulates the shaft's rotational speed and wire tension, while also monitoring various parameters during the winding process. This allows for precise control of the coil structure and consistent winding quality, meeting the manufacturing needs of coils of varying specifications and requirements.

[0003] At present, during the winding process, there will be deviations in the coaxiality between the winding bobbin and the winding axis. The coaxiality deviation causes the centrifugal force during the rotation of the bobbin to cause periodic changes in the tension of the tape. High-temperature superconducting tapes are more sensitive to tension during the winding process. Excessive tension will cause damage to the tape and affect its superconducting performance. Summary of the Invention

[0004] The present application provides a tensioning device and a winding machine, which are used to solve the problem in the prior art that the coaxiality between the winding skeleton and the winding shaft may deviate, and the centrifugal force during the rotation of the skeleton may cause the strip tension to change periodically.

[0005] In one aspect, the present application provides a tensioning device, comprising:

[0006] Rotating flower disc for placing winding skeleton;

[0007] The central axis is arranged at the center of the rotating disc and drives the rotating disc to rotate by rotating around its own axis;

[0008] The connecting seat is sleeved on the central shaft and rotates with the central shaft;

[0009] The transmission connecting rod is evenly arranged along the circumference of the connecting seat, and one end is rotatably connected to the connecting seat;

[0010] The tensioning member is arranged on the rotating faceplate and is rotatably connected to the other end of the transmission connecting rod. The tensioning member can move along the radial direction of the rotating faceplate to abut against or separate from the inner wall of the winding frame during the rotation of the rotating faceplate.

[0011] In one possible design, the transmission connecting rod is an “L”-shaped connecting rod.

[0012] In one possible design, the tensioning member includes a first slider, a second slider and a spring, the two ends of the spring are respectively connected to the first slider and the second slider, a slide rail is provided on the rotating disc along its radial direction, the first slider and the second slider are both arranged on the slide rail, and the first slider is rotatably connected to the transmission connecting rod.

[0013] In a possible design, the rotating faceplate is provided with a limiting groove along its radial direction, and the slide rail is arranged in the limiting groove.

[0014] In a possible design, a ball bearing is provided on a side of the connecting seat close to the rotating faceplate.

[0015] On the other hand, the present application also provides a winding machine, comprising the tensioning device as described above.

[0016] In one possible design, the winding machine also includes:

[0017] Support platform;

[0018] The wire-laying flower disc is set on the supporting platform;

[0019] The pay-off shaft is arranged in the center of the pay-off disc and drives the pay-off disc to rotate by rotating around its own axis.

[0020] In a possible design, a tension meter is provided on the support platform. The tension meter has a detection wheel. The tension meter adjusts the tension of the strip on the detection wheel by moving along the width direction of the support platform.

[0021] In one possible design, a connecting arm is provided on the support platform, a first wheel axle is rotatably mounted on the connecting arm, a guide wheel is sleeved on the first wheel axle, the first wheel axle is also connected to a support rod, a second wheel axle is mounted on the support rod, and a pressure wheel is sleeved on the second wheel axle.

[0022] In a possible design, the winding machine further includes a lifting mechanism, and the support platform is arranged on the lifting mechanism, and the lifting mechanism can drive the support platform to move up and down.

[0023] The beneficial effects of this application are as follows:

[0024] The tensioning device of the present application has a connecting seat that is rotatably connected to the central axis and the transmission connecting rod. When the rotating faceplate rotates clockwise, the tensioning member rotates synchronously with the rotating faceplate, causing relative rotation between the tensioning member and the transmission connecting rod, and relative rotation between the transmission connecting rod and the connecting seat. The radial length of the transmission connecting rod increases, causing the tensioning member to move radially outward along the rotating faceplate to abut against the inner wall of the winding bobbin, achieving centering and tensioning of the winding bobbin. After the tensioning member abuts against the inner wall of the winding bobbin, the connecting seat rotates synchronously with the rotating faceplate, ensuring that the winding bobbin and the winding shaft remain coaxial during the winding process. This ensures that the tension of the strip at different positions during the winding process changes equally, thereby preventing damage to the strip and improving the superconducting performance of the high-temperature superconducting strip. Similarly, after winding is completed, the rotating faceplate is rotated counterclockwise, and the radial length of the transmission connecting rod decreases, causing the tensioning member to move radially inward along the rotating faceplate to separate from the inner wall of the winding bobbin and return to its initial position.

[0025] The winding machine provided in the present application includes the tensioning device in the present application, and therefore also includes all the above-mentioned advantages of the tensioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 Schematic diagram of the structure of the tensioning device provided in the embodiment of the present application Figure 1 ;

[0028] Figure 2 Schematic diagram of the structure of the tensioning device provided in the embodiment of the present application Figure 2 ;

[0029] Figure 3 Schematic diagram of the structure of the winding machine provided in the embodiment of the present application Figure 1 ;

[0030] Figure 4 A top view of a winding machine provided in an embodiment of the present application;

[0031] Figure 5 for Figure 4 Assembly drawing of the middle guide wheel and pressure wheel.

[0032] Reference numerals:

[0033] 110. Rotating faceplate; 111. Limiting groove; 120. Central axis; 130. Connecting seat; 140. Transmission connecting rod; 150. Tensioner; 151. First slider; 152. Second slider; 153. Spring; 160. Slide rail; 170. Ball bearing; 181. First bearing; 182. Second bearing; 183. Pin; 210. Support platform; 220. Pay-off faceplate; 230. Pay-off shaft; 240. Tension meter; 241. Detection wheel; 310. Connecting arm; 320. First axle; 330. Guide wheel; 340. Support rod; 350. Second axle; 360. Pressure wheel; 370. Third bearing; 380. Fourth bearing; 390. Fifth bearing; 410. Frame; 420. Moving seat; 430. Lifting motor; 500. Winding frame. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions of this application in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The following combination Figure 1-Figure 5 , describing the tensioning device provided in an embodiment of the present application.

[0036] Reference Figure 1 、 Figure 2 As shown, the tensioning device provided in the embodiment of the present application includes a rotating faceplate 110, a central shaft 120, a connecting seat 130, a transmission connecting rod 140 and a tensioning member 150. The rotating faceplate 110 is used to place the winding skeleton 500. The rotating faceplate 110 is provided with a central hole, and the central shaft 120 is passed through the central hole of the rotating faceplate 110 and connected by a key. The central shaft 120 is connected to the output end of the motor through a transmission gear. The motor drives the central shaft 120 to rotate around its own axis, thereby driving the rotating faceplate 110 to rotate. The connecting seat 130 is sleeved on the central shaft 120, and the central shaft 120 and the connecting seat 130 are rotatably connected by a first bearing 181. The transmission connecting rods 140 are evenly arranged along the circumference of the connecting seat 130. Specifically, there are four transmission connecting rods 140. The ends of the transmission connecting rods 140 are formed with end shafts. The edges of the connecting seat 130 are formed with four axial holes. The second bearings 182 are installed in the axial holes. The outer ring of the second bearing 182 is connected to the connecting seat 130, and the inner ring of the second bearing 182 is connected to the end shaft of the transmission connecting rod 140.

[0037] The tensioning member 150 is mounted on the rotating faceplate 110 and is rotatably connected to the other end of the transmission link 140. As the rotating faceplate 110 rotates, the tensioning member 150 can move radially to contact or separate from the inner wall of the winding bobbin 500. Specifically, the tensioning member 150 includes a first slider 151, a second slider 152, and a spring 153. The ends of the spring 153 are connected to the first slider 151 and the second slider 152, respectively. The rotating faceplate 110 defines a radially extending limit slot 111. A slide rail 160 is disposed within the limit slot 111. Both the first slider 151 and the second slider 152 are mounted on the slide rail 160. The first slider 151 is rotatably connected to the transmission link 140 via a pin 183.

[0038] Reference Figure 4 As shown, when the rotating faceplate 110 rotates clockwise, the first slider 151 is driven to rotate synchronously with the rotating faceplate 110 clockwise, and relative rotation occurs between the transmission link 140 and the connecting seat 130, causing the transmission link 140 to gradually increase its radial length along the rotating faceplate 110. The first slider 151 moves outward along the slide rail 160, thereby pushing the second slider 152, causing the second slider 152 to move outward along the radial direction of the rotating faceplate 110 to abut against the inner wall of the winding bobbin, thereby aligning and tensioning the winding bobbin 500. After the second slider 152 abuts against the inner wall of the winding bobbin 500, the transmission link 140 cannot continue to rotate, and the connecting seat 130 will be driven to rotate synchronously with the rotating faceplate 110, ensuring that the winding bobbin 500 and the central axis 120 always remain coaxial during the winding process. In this way, it can be ensured that the tension of the tape at different positions during the winding process changes equally, thereby preventing damage to the tape and facilitating improvement of the superconducting performance of the high-temperature superconducting tape.

[0039] After winding is completed, the rotating faceplate 110 rotates counterclockwise, driving the first slider 151 to rotate counterclockwise synchronously with the rotating faceplate 110. The transmission connecting rod 140 and the connecting seat 130 rotate relative to each other, causing the transmission connecting rod 140 to gradually decrease in radial length along the rotating faceplate 110, thereby driving the first slider 151 to move inward along the slide rail 160 back to its initial position, that is, the first slider 151 moves to the inner end of the limiting groove 111. At this time, the first slider 151 loses its limiting force on the second slider 152, and the mutual abutment between the second slider 152 and the inner wall of the winding bobbin 500 is lost.

[0040] By providing the spring 153 between the first slider 151 and the second slider 152 , the instantaneous pressure when the second slider 152 contacts the bobbin 500 can be reduced, thereby preventing the bobbin 500 from being damaged.

[0041] In some embodiments, the transmission connecting rod 140 is an L-shaped connecting rod. This can enhance the strength of the transmission connecting rod 140 and prevent it from breaking when the second slider 152 contacts the inner wall of the winding frame 500 and drives the connecting base 130 to rotate.

[0042] In some specific embodiments, a ball bearing 170 is provided on one side of the connecting seat 130 close to the rotating faceplate 110. The ball bearing 170 can roll on the rotating faceplate 110. In this way, the stability of the connecting seat 130 can be improved and vibration of the connecting seat 130 can be prevented during the winding process.

[0043] Reference Figure 3 As shown, an embodiment of the present application also provides a winding machine, including a base and the tensioning device of the above embodiment, and the tensioning device is installed on the base. Specifically, a slewing support is installed on the base, and the central shaft 120 is connected through the center of the slewing support by a key connection. The upper end surface of the slewing support is rotatably matched with the rotating faceplate 110, and the lower end of the slewing support is rotatably matched with the base. For example, guide ring grooves are respectively provided on the upper and lower end surfaces of the slewing support, and sliding beads are installed in the guide ring grooves. The slewing support is provided with external teeth, which transmit power to the slewing support by meshing with the gears on the motor output shaft, thereby driving the central shaft 120 and the rotating faceplate 110 to rotate.

[0044] Reference Figure 3 、 Figure 4 As shown, in some specific embodiments, the winding machine further includes a support platform 210, a pay-off disc 220 and a pay-off shaft 230. The pay-off disc 220 is rotatably mounted on the support platform 210 through a swivel seat. The pay-off shaft 230 passes through the center of the swivel seat and the center of the pay-off disc 220 from bottom to top. The pay-off shaft 230 is connected to the swivel seat and the pay-off disc 220 respectively by a key. A pay-off motor is also installed at the lower end of the support platform 210. The output shaft of the pay-off motor is meshed with the external teeth of the swivel seat through a gear. When the pay-off motor is started, the gear on the motor output shaft drives the swivel seat and the pay-off shaft 230 to rotate synchronously around their own axes, thereby driving the pay-off disc 220 to rotate. The pay-off reel storing the tape is placed on the pay-off faceplate 220 and sleeved on the pay-off shaft 230. One end of the tape is led out from the pay-off reel to the winding skeleton 500. When the pay-off faceplate 220 rotates, the tape can be paid out.

[0045] Reference Figure 4As shown, in some specific embodiments, a tension meter 240 is further provided on the support platform 210. The tension meter 240 may be a strain gauge, etc. The tension meter 240 is equipped with a detection wheel 241. The tension meter 240 can detect the change in the tension of the strip on the detection wheel 241 in real time, thereby adjusting the output torque of the pay-off motor to maintain a stable tension in the strip and avoid damage to the strip due to excessive tension. A guide rail is also provided on the support platform 210. The guide rail is arranged along the width direction of the support platform 210. The tension meter 240 is slidably arranged on the guide rail. In this way, the tension meter 240 can move along the width direction of the support platform 210 to adjust the tension of the strip on the detection wheel 241. For example, the position of the tension meter 240 on the guide rail can be adjusted manually or by a cylinder.

[0046] Reference Figure 4 、 Figure 5 As shown, in some specific embodiments, a connecting arm 310 is provided on the support platform 210. A first axle 320 is rotatably mounted on the connecting arm 310 via a third bearing 370. A guide wheel 330 is mounted on the first axle 320 via a fourth bearing 380. The first axle 320 is further connected to a support rod 340. A second axle 350 is mounted on the support rod 340. A pressure wheel 360 is mounted on the second axle 350 via a fifth bearing 390. The starting friction torque of the third bearing 370 is greater than the starting friction torque of the fourth bearing 380. The guide wheel 330 is used to guide the strip on the pay-off reel to the winding bobbin 500, and the pressure wheel 360 is used to abut against the outer surface of the strip on the winding bobbin to apply constant pressure and flatten the wound strip.

[0047] Before winding, the support rod 340 can be manually rotated a certain angle to force the pressure roller 360 against the surface of the strip on the winding bobbin 500. During the winding process, the force exerted by the strip on the guide roller 330 is relatively small. Because the starting friction torque of the third bearing 370 is greater than that of the fourth bearing 380, the guide roller 330 rotates around the fourth bearing 380. As the number of turns of the coil increases, the force exerted by the strip on the pressure roller 360 gradually increases until it reaches the starting friction torque of the third bearing 370. The support rod 340 then pushes the first wheel shaft 320 to rotate around the third bearing 370. This allows the pressure roller 360 to maintain a relatively constant force on the strip, compacting and flattening it. During the winding process, the guide roller guides the strip, while the pressure roller 360 constantly presses against the surface of the strip on the winding bobbin 500 to flatten it. This ensures that each layer of the strip is constantly flattened as the winding progresses.

[0048] Reference Figure 3As shown, in some specific embodiments, the winding machine also includes a lifting mechanism, and the support platform 210 is arranged on the lifting mechanism, and the lifting mechanism can drive the support platform 210 to reciprocate along the height direction of the winding mechanism. Specifically, the lifting mechanism includes a frame 410, a movable seat 420, a screw and a lifting motor 430, and the support platform 210 is fixedly connected to the movable seat 420. A vertical guide edge is formed on the frame 410, and a vertical guide groove is formed on the movable seat 420. The guide groove and the guide edge slide together to enable the movable seat 420 to be slidably mounted on the frame 410. A screw hole is also provided on the movable seat 420, and the screw rod is vertically inserted into the screw hole. The output shaft of the lifting motor 430 is connected to the screw rod, and the lifting motor 430 can drive the screw rod to rotate, thereby causing the movable seat 420 to move up and down, thereby driving the pay-off assembly to move up and down, and evenly winding the strip on the winding skeleton 500.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0051] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0052] In this application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0053] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A tensioning device, characterized in that: include: Rotating flower disc for placing winding skeleton; The central shaft is provided at the center of the rotating faceplate and drives the rotating faceplate to rotate by rotating around its own axis; A connecting seat is sleeved on the central shaft and rotatably engaged with the central shaft; A transmission connecting rod is evenly arranged along the circumference of the connecting seat, and one end of the transmission connecting rod is rotatably connected to the connecting seat; A tensioning member is provided on the rotating faceplate and is rotatably connected to the other end of the transmission connecting rod. The tensioning member can move in the radial direction of the rotating faceplate to abut against or separate from the inner wall of the winding skeleton during the rotation of the rotating faceplate. The tensioning member includes a first slider, a second slider and a spring, the two ends of the spring are respectively connected to the first slider and the second slider, and the first slider is rotatably connected to the transmission connecting rod; When the rotating faceplate rotates clockwise, it drives the first slider to rotate synchronously with the rotating faceplate, and the transmission connecting rod and the connecting seat will rotate relative to each other, so that the radial length of the transmission connecting rod along the rotating faceplate gradually increases, and the second slider moves radially outward along the rotating faceplate to abut against the inner wall of the winding skeleton; the rotating faceplate rotates counterclockwise, driving the first slider to rotate synchronously with the rotating faceplate, and the transmission connecting rod and the connecting seat rotate relative to each other, so that the radial length of the transmission connecting rod along the rotating faceplate gradually decreases, thereby driving the first slider to move radially inward along the rotating faceplate back to the initial position.

2. The tensioning device according to claim 1, characterized in that: The transmission connecting rod is an "L"-shaped connecting rod.

3. The tensioning device according to claim 1, characterized in that: The rotating faceplate is provided with a slide rail along its radial direction, and the first sliding block and the second sliding block are both arranged on the slide rail.

4. The tensioning device according to claim 3, characterized in that: The rotating faceplate is provided with a limiting groove along its radial direction, and the slide rail is arranged in the limiting groove.

5. The tensioning device according to claim 1, characterized in that: A ball bearing is provided on one side of the connecting seat close to the rotating faceplate.

6. A winding machine, characterized in that: The invention comprises the tensioning device according to any one of claims 1 to 5.

7. The winding machine according to claim 6, characterized in that Also includes: Support platform; A wire-laying disc is arranged on the supporting platform; The pay-off shaft is passed through the center of the pay-off disc and drives the pay-off disc to rotate by rotating around its own axis.

8. The winding machine according to claim 7, characterized in that: A tension meter is provided on the support platform. The tension meter has a detection wheel. The tension meter adjusts the tension of the strip on the detection wheel by moving along the width direction of the support platform.

9. The winding machine according to claim 7, characterized in that: A connecting arm is provided on the supporting platform, a first wheel axle is rotatably mounted on the connecting arm, a guide wheel is sleeved on the first wheel axle, the first wheel axle is connected to a support rod, a second wheel axle is mounted on the support rod, and a pressure wheel is sleeved on the second wheel axle.

10. The winding machine according to any one of claims 7 to 9, characterized in that: It also includes a lifting mechanism, the support platform is arranged on the lifting mechanism, and the lifting mechanism can drive the support platform to move up and down.

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