Planar winding machine for high temperature superconducting magnets

Abstract

The present application relates to the technical field of winding machines, and in particular to a planar winding machine for high-temperature superconducting magnets, comprising a pay-off mechanism and a winding mechanism, wherein the pay-off mechanism is used to pay-off the strip on the pay-off reel; the winding mechanism is arranged on one side of the pay-off mechanism, and the winding mechanism comprises a first turntable, a winding shaft, and a centering assembly, wherein the winding shaft is coaxially connected to the first turntable and drives the first turntable to rotate by rotating around its own axis; a winding skeleton is arranged on the first turntable for winding the strip after the pay-off; a plurality of centering assemblies are arranged along the circumference of the winding shaft, one end of which is connected to the winding shaft, and the other end of which is abutted against the inner wall of the winding skeleton to keep the winding skeleton and the winding shaft coaxial. In this way, during the winding process, the winding skeleton and the winding shaft always maintain a coaxial state, which can ensure that the tension of the strip at different positions in the winding process changes equally, thereby preventing damage to the strip and improving 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 planar winding machine for high-temperature superconducting magnets. 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 simultaneously regulates the shaft's rotational speed and wire tension, as well as monitoring various parameters during the winding process. This allows for precise control of the coil structure and guaranteed stable 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 planar winding machine for high-temperature superconducting magnets, which is 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] The present application provides a planar winding machine for high-temperature superconducting magnets, comprising:

[0006] Pay-off mechanism, used to pay off the strip on the pay-off reel;

[0007] The winding mechanism is arranged on one side of the pay-off mechanism and includes:

[0008] The first turntable is used to place the winding skeleton;

[0009] The winding shaft is coaxially connected to the first rotating disk and drives the first rotating disk to rotate by rotating around its own axis;

[0010] There are multiple centering components, which are arranged along the circumference of the winding shaft. One end is connected to the winding shaft, and the other end abuts against the inner wall of the winding skeleton to keep the winding skeleton and the winding shaft coaxial.

[0011] In one possible design, each alignment assembly includes:

[0012] shaft;

[0013] The abutment piece is sleeved on the rotating shaft and is in contact with or separated from the inner wall of the winding frame by rotating around the axis of the rotating shaft.

[0014] In a possible design, a clutch assembly is further included, and the clutch assembly includes:

[0015] The planet carrier is sleeved on the winding shaft and rotates with the winding shaft;

[0016] The central shaft is threadably matched with one end of the winding shaft and is coaxially arranged;

[0017] The center wheel is sleeved on the center shaft, the outer wheel surface of the center wheel is evenly provided with shifting rods, and the center wheel is provided with a through hole;

[0018] A guide rod is provided on the planet carrier and is parallel to the central axis, and the guide rod is passed through the through hole;

[0019] The helical gear is sleeved on the rotating shaft, and the outer wheel surface of the helical gear can contact the shifting rod.

[0020] In a possible design, the planet carrier is located above the first turntable, and a ball bearing is provided on a side of the planet carrier close to the first turntable.

[0021] In one possible design, a wheel groove is provided on the outer surface of the abutment, a wheel axle is installed in the wheel groove, and a roller is mounted on the wheel axle through a one-way bearing. The abutment rotates around the axis of the rotating shaft to make the roller abut or separate from the inner wall of the winding frame.

[0022] In one possible design, the abutment is a cam.

[0023] In a possible design, a limit block is provided at the upper end of the guide rod, and a displacement sensor is provided on the limit block.

[0024] In one possible design, the pay-off mechanism includes:

[0025] Support platform;

[0026] A second turntable is provided on the supporting platform;

[0027] The pay-off shaft is coaxially connected to the second turntable and drives the second turntable to rotate by rotating around its own axis.

[0028] In a possible design, a tension meter is provided on the support platform, and a detection wheel is provided on the tension meter. The tension meter adjusts the tension of the strip on the detection wheel by moving along the width direction of the support platform.

[0029] In a possible design, a lifting mechanism is further included, and the support platform is arranged on the lifting mechanism. The lifting mechanism can drive the support platform to reciprocate along the height direction of the winding mechanism.

[0030] The beneficial effects of this application are as follows:

[0031] The planar winding machine for high-temperature superconducting magnets disclosed herein comprises a centering assembly disposed between the winding shaft and the winding bobbin, with multiple sets of centering assemblies arranged circumferentially along the winding shaft. When the outer sides of the centering assemblies abut against the inner walls of the winding bobbin, the winding bobbin is centered and tensioned, thereby ensuring that the winding bobbin and the winding shaft remain coaxial throughout the winding process. This ensures that the tension of the strip at different locations during the winding process varies equally, thereby preventing damage to the strip and improving the superconducting performance of the high-temperature superconducting strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] Figure 1 Schematic diagram of the structure of the planar winding machine for high-temperature superconducting magnets provided in the embodiment of the present application Figure 1 ;

[0034] Figure 2 Schematic diagram of the structure of the planar winding machine for high-temperature superconducting magnets provided in the embodiment of the present application Figure 2 ;

[0035] Figure 3 Schematic diagram of the structure of the winding mechanism of the planar winding machine for high-temperature superconducting magnets provided in the embodiment of the present application Figure 1 ;

[0036] Figure 4 Schematic diagram of the structure of the winding mechanism of the planar winding machine for high-temperature superconducting magnets provided in the embodiment of the present application Figure 2 .

[0037] Reference numerals:

[0038] 100. Winding mechanism; 110. First turntable; 120. Winding shaft; 130. Winding frame; 141. Rotating shaft; 142. Abutment; 143. Roller; 151. Planetary carrier; 152. Center shaft; 153. Center wheel; 154. Push rod; 155. Guide rod; 156. Bevel gear; 157. Limit block; 158. Center bearing; 160. Base; 161. Slewing support; 162. Transmission gear; 200. Pay-off mechanism; 210. Support platform; 220. Second turntable; 230. Pay-off shaft; 240. Tension meter; 250. Detection wheel; 300. Lifting mechanism; 310. Frame; 320. Moving seat; 330. Screw; 340. Lifting motor. DETAILED DESCRIPTION

[0039] 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.

[0040] The following combination Figure 1-Figure 4 , describing a planar winding machine for high-temperature superconducting magnets provided in an embodiment of the present application.

[0041] Reference Figure 1 、 Figure 2 As shown, the planar winding machine for high-temperature superconducting magnets provided in an embodiment of the present application includes a pay-off mechanism 200 and a winding mechanism 100. The pay-off mechanism 200 is used to pay off the strip on the pay-off reel. The winding mechanism 100 is arranged around the pay-off mechanism 200 and is used to wind the paid-off strip onto a winding bobbin 130. The winding mechanism 100 includes a first turntable 110, a winding shaft 120, and a centering assembly. The slewing support 161 is rotatably mounted on the base 160 via a bearing. The winding shaft 120 passes through the center of the slewing support 161 and the center of the first turntable 110 from bottom to top. The winding shaft 120 is connected to the slewing support 161 and the first turntable 110 respectively via a key. A motor is also installed on the base 160, and a transmission gear 162 is sleeved on the output shaft of the motor. The transmission gear 162 is engaged with the outer teeth of the rotary support 161. When the winding motor is started, the transmission gear 162 on the motor output shaft rotates synchronously, thereby driving the rotary support 161 and the winding shaft 120 to rotate synchronously around their own axes, thereby driving the first turntable 110 to rotate.

[0042] The winding bobbin 130 is placed on the first turntable 110. The winding bobbin 130 is an annular magnetic bobbin for winding the unwound strip around its outer surface. The centering assembly includes at least two sets, each of which has the same size. For example, three sets of centering assemblies are evenly arranged along the circumference of the winding shaft 120. Each set of centering assemblies has an inner end and an outer end. The inner end is connected to the winding shaft 120, and the outer end abuts against the inner wall of the winding bobbin 130, thereby maintaining the coaxiality between the winding bobbin 130 and the winding shaft 120.

[0043] Reference Figure 3 As shown, in some embodiments of the present application, each centering assembly includes a rotating shaft 141 and an abutment member 142. The rotating shaft 141 is parallel to the winding shaft 120. The abutment member 142 is fixed to the rotating shaft 141 by a key connection. The abutment member 142 abuts or separates from the inner wall of the winding skeleton 130 by rotating around the axis of the rotating shaft 141. The abutment member 142 is a cam. The end with a smaller diameter of the cam is sleeved on the rotating shaft 141, and the end with a larger diameter of the cam is the abutment end. In some embodiments, three rotating shafts 141 are evenly distributed along the circumference of the winding shaft 120. The lower ends of the rotating shafts 141 are respectively mounted on the first turntable 110. By rotating the rotating shaft 141, the cam can be driven to rotate, so that the end with a larger diameter of the cam abuts or separates from the inner wall of the winding skeleton 130.

[0044] In other embodiments, side gears are respectively sleeved on the rotating shafts 141. An auxiliary bracket is fixed to the first turntable 110, and a motor is mounted on the auxiliary bracket. A main gear is sleeved on the output shaft of the motor. The main gear is located at the center of the three side gears and meshes with the three side gears respectively. By driving the main gear to rotate, the three side gears can be driven to rotate synchronously, thereby causing the abutment members 142 on the three rotating shafts 141 to rotate synchronously, so that the outer side of the abutment members 142 abuts against the inner wall of the winding bobbin 130; conversely, by driving the main gear to rotate in the opposite direction, the outer side of the abutment member 142 can be separated from the inner wall of the winding bobbin 130.

[0045] Reference Figure 3As shown, in some embodiments of the present application, the planar winding machine further includes a clutch assembly, which includes a planetary carrier 151, a central shaft 152, a central wheel 153, a guide rod 155, and a bevel gear 156. The planetary carrier 151 is sleeved on the winding shaft 120 through a central bearing 158, and the planetary carrier 151 rotates in conjunction with the winding shaft 120. A concave cylindrical thread groove is formed at the upper end of the winding shaft 120, and an external thread is provided on the central shaft 152. The lower end of the central shaft 152 extends into the thread groove, so that the central shaft 152 and the winding shaft 120 are threadedly matched and coaxially arranged. The central wheel 153 is sleeved on the central shaft 152, and the outer wheel surface of the central wheel 153 is evenly provided with shifting rods 154, for example, three shifting rods 154 are provided. A through hole is also provided on the center wheel 153. A guide rod 155 is fixed to the planetary carrier 151 at a position corresponding to the through hole. The guide rod 155 is parallel to the center shaft 152, so that the upper end of the guide rod 155 extends through the through hole. A bevel gear 156 is sleeved on the rotating shaft 141. When the winding shaft 120 rotates, the center wheel 153 is limited by the guide rod 155, and the center shaft 152 and the winding shaft 120 are threaded together to move up and down, thereby driving the center wheel 153 to move up and down. When the center wheel 153 moves downward, the shifting rod 154 is inserted into the tooth gap of the bevel gear 156. The shifting rod 154 drives the bevel gear 156 to rotate a certain angle, causing the abutment member 142 to abut the inner side of the winding frame 130. When the center wheel 153 moves upward, the shifting rod 154 is inserted into the tooth gap of the bevel gear 156 , and the shifting rod 154 drives the bevel gear 156 to rotate in the opposite direction at a certain angle, so that the abutting member 142 is separated from the inner side of the winding frame 130 .

[0046] In some embodiments of the present application, the planet carrier 151 is located above the first turntable 110. Ball bearings are disposed on the side of the planet carrier 151 closest to the first turntable 110, allowing the balls to roll on the first turntable 110. The friction between the balls and the first turntable 110 is less than the starting torque of the center bearing 158. This helps enhance the stability of the planet carrier 151 and prevents vibration of the winding bobbin 130 during the winding process.

[0047] Reference Figure 3 、 Figure 4 As shown, in some embodiments of the present application, a wheel groove is formed on the outer surface of the abutment member 142, in which a wheel axle is installed. The roller 143 is mounted on the wheel axle via a one-way bearing. The outer surface of the roller 143 protrudes from the abutment member 142. The abutment member 142 rotates around the axis of the rotating shaft 141 to cause the roller 143 to abut or separate from the inner wall of the winding skeleton 130. In this way, the roller 143 can only rotate in one direction and cannot rotate in the opposite direction.

[0048] Reference Figure 3As shown, before winding, the center wheel 153 is higher than the bevel gear 156. When the winding motor drives the winding shaft 120 to rotate, the friction between the ball bearing and the first turntable 110 is less than the starting torque of the center bearing 158, so the planetary carrier 151 remains stationary. The guide rod 155 on the planetary carrier 151 circumferentially limits the center wheel 153. The center shaft 152 and the winding shaft 120 are threaded together to achieve up and down movement, thereby driving the center wheel 153 to move downward. The shifting rod 154 is inserted into the tooth gap of the bevel gear 156. As the center wheel 153 continues to move downward, it drives the bevel gear 156 to rotate a certain angle, causing the abutment 142 to abut the inner side of the winding frame 130. At this time, because the roller 143 cannot rotate, the roller 143 will abut the inner side of the winding frame 130. At the same time, the center shaft 152 reaches the bottom of the thread groove of the winding shaft 120. At this time, since the sum of the friction force between the roller 143 and the winding skeleton 130 and the friction force between the ball and the first turntable 110 is greater than the starting torque of the center bearing 158, when the motor continues to drive the winding shaft 120 to rotate, the winding shaft 120 will drive the planetary carrier 151 to rotate synchronously with the first turntable 110 and the winding skeleton 130, and always keep the winding skeleton 130 and the winding shaft 120 coaxial, so that the strip is wound on the winding skeleton 130.

[0049] After the winding is completed, the winding motor drives the winding shaft 120 in reverse to rotate. At this time, since the roller 143 can rotate, the sum of the friction between the roller 143 and the winding frame 130 and the friction between the ball and the first turntable 110 will be less than the starting torque of the center bearing 158, and the planetary carrier 151 no longer rotates with the winding shaft 120. The guide rod 155 on the planetary carrier 151 realizes circumferential limitation of the center wheel 153, and the center shaft 152 drives the center wheel 153 to move upward, and the shift rod 154 drives the bevel gear 156 to rotate in the opposite direction at a certain angle, so that the abutment 142 is separated from the inner side of the winding frame 130, and the center wheel 153 returns to its initial position.

[0050] In some embodiments, a limit block 157 is provided at the upper end of the guide rod 155, and a displacement sensor is provided on the limit block 157. The displacement sensor can detect the distance between the center wheel 153 and the limit block 157. When the distance is less than a preset value, the winding motor stops, thereby maintaining the initial position of the center wheel and preventing the center wheel 153 from falling off the upper end of the guide rod 155.

[0051] Reference Figure 2As shown, in some embodiments of the present application, the pay-off mechanism 200 includes a support platform 210, a second turntable 220, and a pay-off shaft 230. The second turntable 220 is rotatably mounted on the support platform 210 via a swivel base. The pay-off shaft 230 passes through the center of the swivel base and the center of the second turntable 220, respectively, from bottom to top. The pay-off shaft 230 is connected to the swivel base and the second turntable 220 via a key. A pay-off motor is also mounted at the lower end of the support platform 210. The output shaft of the pay-off motor meshes with the external teeth of the swivel base via a gear. When the pay-off motor is activated, the gear on the motor output shaft drives the swivel base and the winding shaft 120 to rotate synchronously around their own axes, thereby driving the second turntable 220 to rotate. The pay-off drum, which stores the tape, is placed on the second turntable 220 and is mounted on the pay-off shaft 230. One end of the tape is drawn from the pay-off drum to the winding frame 130. When the second turntable 220 rotates, the tape is unwound.

[0052] Reference Figure 2 As shown, in some embodiments of the present application, a tension meter 240 is further provided on the support platform 210. The tension meter 240 may be a strain gauge, for example. The tension meter 240 is equipped with a detection wheel 250. The tension meter 240 can detect changes in the tension of the strip on the detection wheel 250 in real time, thereby adjusting the output torque of the pay-off motor to maintain a stable tension in the strip and prevent damage to the material due to excessive tension. A guide rail is also provided on the support platform 210. The guide rail is arranged along the width 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 of the support platform 210 to adjust the tension of the strip on the detection wheel 250. For example, the position of the tension meter 240 on the guide rail can be adjusted manually or by a cylinder.

[0053] Reference Figure 2 As shown, in some embodiments of the present application, the flat winding machine also includes a lifting mechanism 300, the support platform 210 is arranged on the lifting mechanism 300, and the lifting mechanism 300 can drive the support platform 210 to reciprocate along the height direction of the winding mechanism 100. Specifically, the lifting mechanism 300 includes a frame 310, a movable seat 320, a screw rod 330 and a lifting motor 340, and the support platform 210 is fixedly connected to the movable seat 320. A vertical guide edge is formed on the frame 310, and a vertical guide groove is formed on the movable seat 320. The guide groove and the guide edge slide together to enable the movable seat 320 to be slidably mounted on the frame 310. The movable seat 320 is also provided with a screw hole, and the screw rod 330 is vertically penetrated into the screw hole. The output shaft of the lifting motor 340 is connected to the screw rod 330. The lifting motor 340 can drive the screw rod 330 to rotate, thereby causing the movable seat 320 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 130.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 planar winding machine for high-temperature superconducting magnets, characterized in that: include: Pay-off mechanism, used to pay off the strip on the pay-off reel; The winding mechanism is provided on one side of the pay-off mechanism, and the winding mechanism comprises: The first turntable is used to place the winding skeleton; a winding shaft, coaxially connected to the first rotating disk, and driving the first rotating disk to rotate by rotating around its own axis; A plurality of centering assemblies are arranged along the circumference of the winding shaft, one end of which is connected to the winding shaft, and the other end of which abuts against the inner wall of the winding skeleton to keep the winding skeleton and the winding shaft coaxial; each centering assembly includes a rotating shaft and an abutment member sleeved on the rotating shaft, and the abutment member abuts or separates from the inner wall of the winding skeleton by rotating around the axis of the rotating shaft; Clutch assembly, including: a planet carrier, sleeved on the winding shaft and rotatably matched with the winding shaft; A central shaft, threadedly engaged with one end of the winding shaft and coaxially arranged; A center wheel is sleeved on the center shaft, the outer surface of the center wheel is evenly provided with shift rods, and the center wheel is provided with a through hole; A guide rod is provided on the planet carrier and is parallel to the central axis, and the guide rod is passed through the through hole; a helical gear sleeved on the rotating shaft, wherein an outer surface of the helical gear is capable of contacting the shifting rod; When the winding shaft rotates, the winding shaft and the central shaft are threaded together to move the central wheel downward, and the shifting rod drives the helical gear to rotate, so that the abutment member abuts against the inner side of the winding frame. At this time, the winding shaft will drive the planetary frame to rotate synchronously with the first turntable and the winding frame, so that the strip is wound on the winding frame; When the winding is completed, the winding shaft rotates in the opposite direction, and the winding shaft and the central shaft thread cooperate to move the central wheel upward, so that the shifting rod drives the helical gear to rotate until the abutment is separated from the inner side of the winding frame.

2. The planar winding machine for high-temperature superconducting magnets according to claim 1, characterized in that: The planet carrier is located above the first turntable, and a ball bearing is provided on a side of the planet carrier close to the first turntable.

3. The planar winding machine for high-temperature superconducting magnets according to claim 2, characterized in that: A wheel groove is formed on the outer surface of the abutment, a wheel axle is installed in the wheel groove, and a roller is sleeved on the wheel axle through a one-way bearing. The abutment rotates around the axis of the rotating shaft to make the roller abut against or separate from the inner wall of the winding frame.

4. The planar winding machine for high-temperature superconducting magnets according to any one of claims 1 to 3, characterized in that: The abutment member is a cam.

5. The planar winding machine for high-temperature superconducting magnets according to any one of claims 1 to 3, characterized in that: A limit block is provided at the upper end of the guide rod, and a displacement sensor is provided on the limit block.

6. The planar winding machine for high-temperature superconducting magnets according to any one of claims 1 to 3, characterized in that: The pay-off mechanism comprises: Support platform; A second turntable is provided on the supporting platform; The pay-off shaft is coaxially connected to the second turntable and drives the second turntable to rotate by rotating around its own axis.

7. The planar winding machine for high-temperature superconducting magnets according to claim 6, 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.

8. The planar winding machine for high-temperature superconducting magnets according to claim 7, 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 reciprocate along the height direction of the winding mechanism.

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