A multi-coil adjustable winding tool suitable for MCZ superconducting magnet

Abstract

The application discloses a kind of adjustable winding tool suitable for MCZ superconducting magnet multi-coil, it is related to coil winding technical field, including coil framework, winding shaft, center support, connecting block etc., eight threaded adjusting rods with ball head structure are equipped outside center support and are connected with support seat to fit inner cavity of framework, linear ball bearing in its shaft hole is used to pass and set winding shaft, multiple coil frameworks are locked into whole by connecting block, cylindrical pin and through screw rod and nut, and outside is configured with line pressing assembly containing cantilever beam, line pressing rod, spring and Teflon line pressing block.The application adjusts the radial position of support seat by eight threaded adjusting rods to adapt to different inner cavities of framework, and realizes self-adapting contact with winding shaft by ball head structure and linear ball bearing Convenient plugging is realized.Simultaneously, screw rod is used to lock multiple frameworks into coaxial rigid whole with sixteen connecting blocks, realize continuous winding and reduce vibration, so as to have universality, convenience and stability.

Description

Technical Field

[0001] This invention relates to the field of coil winding technology, specifically to an adjustable winding fixture for multi-coil winding of MCZ superconducting magnets. Background Technology

[0002] With the explosive growth in demand for high-quality monocrystalline silicon from the semiconductor and photovoltaic industries, the magnetron Czochralski (MCZ) method has become a core technology for preparing large-size, low-defect monocrystalline silicon due to its ability to precisely control melt convection through a magnetic field, significantly reducing oxygen content and impurity distribution in the crystal. As the core component of the MCZ system, superconducting magnets have completely replaced traditional electromagnets due to their high magnetic field strength, low energy consumption, and excellent stability.

[0003] In magnetron sputtering (MCZ) superconducting magnets, the number of bobbin coils is typically multiple. Currently, conventional bobbin coil winding generally involves mounting winding discs at both ends of a single bobbin and winding the coil through a winding shaft. After a single coil is wound, the winding fixture is removed, and a new bobbin is used for rewinding.

[0004] This method is extremely inconvenient when changing the bobbin, requiring the winding shaft to be frequently inserted and removed from the winding spool. Moreover, since different MCZ models require customized electromagnetic design schemes, the size, shape, and hole positions of the bobbin are also different. This means that the fixed support structure of traditional tooling cannot adapt to the size changes, and after use, it can only be scrapped or recycled, resulting in huge cost losses. Therefore, traditional winding tooling lacks the versatility, convenience, and economy of the device. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable winding fixture for multi-coil MCZ superconducting magnets to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides an adjustable winding fixture for multi-coil MCZ superconducting magnets, comprising a coil frame, and the winding fixture further comprising a winding shaft and a central support;

[0007] The outer circumference of the central support is evenly distributed with multiple threaded holes, and the two ends of the central support are provided with shaft holes. A linear ball bearing is installed in the shaft hole of the central support, and the outer wall of the winding shaft passes through the inner wall of the linear ball bearing.

[0008] The end faces of several coil frames are provided with corresponding pin holes, and at least two coil frames are connected in series with each other by cylindrical pins.

[0009] Eight threaded adjusting rods are evenly spaced around the outer periphery of the central support. One end of each threaded adjusting rod is threaded, and the other end is ball-headed. The ends of the eight threaded adjusting rods facing each other are connected to the threaded holes on the outer side of the central support via threads, and the ends of the eight threaded adjusting rods far apart are movably connected to a support seat via ball-headed structures.

[0010] Preferably, the winding shaft is a hollow tube structure, with matching pin holes and clamping ends at both ends, and the winding shaft is locked to the side wall of the central support by fastening screws.

[0011] Preferably, the linear ball bearing is fixed to the side wall of the central support by at least two circumferentially distributed fastening screws, and the inner ring of the linear ball bearing is clearance-fitted with the outer wall of the winding shaft.

[0012] Preferably, the outer contour of the support base matches the inner wall of the coil frame, and the inner wall of the coil frame is in contact with the plurality of support bases.

[0013] Preferably, each of the support seats has a cover plate on one side of its top, the cover plate being fixed and pressing against the ball end of the threaded adjusting rod by fastening screws.

[0014] Preferably, the end faces of several coil frames are connected by connecting blocks and through lead screws, and nuts are threaded onto both ends of the lead screws for locking.

[0015] The connecting block is a right-angled plate structure. One end of the connecting block is fixed to the end face of the coil frame by a fastening screw, and the other end of the connecting block has a through hole for the lead screw to pass through. The end face of the nut is provided with a stainless steel elastic washer.

[0016] Preferably, a wire pressing assembly is provided on the outer side of the coil frame;

[0017] The wire pressing assembly includes a cantilever beam with one end threadedly connected to the wire feeding frame, and a wire pressing rod at the other end of the cantilever beam. The ends of the cantilever beam and the wire pressing rod are hinged together with a pin. A spring is connected to the middle of the cantilever beam and the wire pressing rod. A Teflon wire pressing block is glued to the end of the wire pressing rod that contacts the superconducting wire, and the Teflon wire pressing block has different types of grooves on one side corresponding to the superconducting wire.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When installing the coil bobbin, the radial position of each support relative to the central support can be precisely adjusted by moving the eight threaded adjusting rods. This allows the same set of central supports to accommodate not only circular bobbins of different diameters, but also non-circular or slightly irregular bobbin cavities through asymmetrical adjustment. The ball joint structure design within the support allows for adaptive deflection within a small angle, ensuring good contact. The linear ball bearings allow the winding shaft to be easily inserted into or removed from the central support, and subsequent wear mainly occurs on the replaceable linear ball bearings, thereby improving the ease of replacement and service life of the winding shaft. This, in turn, ensures the versatility, convenience, and economy of this winding fixture.

[0020] 2. When installing the coil frames, multiple coil frames can be locked together using a lead screw, a nut, and a stainless steel elastic washer on the end face of the nut. Sixteen connecting blocks are used at both ends to form a whole, allowing the subsequent fixture and multiple coil frames to be installed as a single unit on the winding machine. After winding one coil, simply move the pay-off frame and the pressing assembly to the next coil frame position to continue winding without disassembling the fixture or replacing the coil frames. Furthermore, the multiple coil frames are connected as a whole, forming a coaxial rigid assembly, preventing individual frames from shifting or deforming under winding stress. This ensures that the winding fixture experiences less vibration and greater stability during winding. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall isometric side view of the present invention;

[0022] Figure 2 This is a front view of the overall structure of the present invention;

[0023] Figure 3 This is a top sectional view of the overall structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the wire pressing assembly of the present invention;

[0026] Figure 6 This is a side view of the pressure wire assembly of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0028] In the diagram: 1. Coil frame; 2. Winding shaft; 3. Central support; 4. Threaded adjusting rod; 5. Linear ball bearing; 6. Support seat; 7. Cover plate; 8. Connecting block; 9. Cylindrical pin; 10. Lead screw; 11. Nut; 12. Fastening screw; 13. Stainless steel elastic washer; 15. Superconducting wire; 14. Wire pressing assembly; 1401. Wire pressing rod; 1402. Cantilever beam; 1403. Pin; 1404. Spring; 1405. Teflon wire pressing block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1, please refer to Figures 1-7 The present invention provides an adjustable winding fixture for multi-coil MCZ superconducting magnets, including a coil frame 1, a winding shaft 2, a central support 3, a connecting block 8, a cylindrical pin 9, a lead screw 10, a fastening screw 12, and a superconducting wire 15.

[0031] The outer circumference of the central support 3 is evenly distributed with multiple threaded holes, and the two ends of the central support 3 are provided with shaft holes. A linear ball bearing 5 is installed in the shaft hole of the central support 3. The outer wall of the winding shaft 2 passes through the inner wall of the linear ball bearing 5. Eight threaded adjusting rods 4 are evenly distributed on the outer circumference of the central support 3. One end of the threaded adjusting rod 4 is a threaded structure, and the other end of the threaded adjusting rod 4 is a ball head structure. The ends of the eight threaded adjusting rods 4 facing each other are connected to the outer threaded holes of the central support 3 by threads, and the ends of the eight threaded adjusting rods 4 far apart are movably connected to the support seat 6 by ball head structure.

[0032] In this embodiment, when this winding fixture is used, firstly, two linear ball bearings 5 ​​are installed in the inner walls of the two ends of the shaft hole of the central support 3, and then the linear ball bearings 5 ​​and the central support 3 are locked together with fastening screws 12. Then, one end of the ball head of eight threaded adjusting rods 4 is inserted into the inside of the support seat 6. Then, the cover plate 7 is fixed to the notch position on the top side of the support seat 6 with fastening screws 12 to press the ball head end of the threaded adjusting rod 4 and facilitate subsequent maintenance. Then, the threaded ends of multiple threaded adjusting rods 4 are inserted into the outer threaded holes of the central support 3.

[0033] Next, multiple coil frames 1 connected in series by cylindrical pins 9 are fitted onto the outside of the central support 3. Then, the threaded adjustment rods 4 can be adjusted. By rotating the multiple threaded adjustment rods 4, the radial position of each support seat 6 relative to the central support 3 can be precisely fine-tuned. Then, the outer contour of the support seat 6 matches the inner wall of the coil frame 1, and the inner wall of the coil frame 1 fits against the multiple support seats 6, so that the outer arc surface of the support seat 6 is tightly attached to the inner wall of the coil frame 1. Moreover, through the setting of the ball head structure, the outer arc surface of the support seat 6 can tightly fit the inner wall of the coil frame 1 with different inner diameters and shapes. Thus, the same set of central supports 3 can not only adapt to circular frames with different diameters, but also adapt to non-circular or slightly irregular inner cavities of frames through asymmetrical adjustment. The ball head structure design in the support seat 6 allows it to self-adaptively deflect within a small angle to ensure good contact.

[0034] Furthermore, since the winding shaft 2 is a hollow tube structure, both ends of the winding shaft 2 are provided with matching pin holes and clamping ends, and the winding shaft 2 is locked to the side wall of the central support 3 by fastening screws 12. The linear ball bearing 5 is fixed to the side wall of the central support 3 by at least two circumferentially distributed fastening screws 12, and the inner ring of the linear ball bearing 5 is clearance-fitted with the outer wall of the winding shaft 2.

[0035] Specifically, the winding shaft 2 can be passed through the inner hole of the linear ball bearing 5 and locked in place from the outer side wall of the central support 3 with the fastening screw 12. The rolling friction coefficient of the linear ball bearing 5 is much lower than that of traditional sliding friction, and the high-precision linear motion channel allows the winding shaft 2 to be easily inserted into or removed from the central support 3, and then locked in place with the fastening screw 12 on the side. Subsequent wear mainly occurs on the replaceable linear ball bearing 5, thereby improving the ease of replacement and service life of the winding shaft 2.

[0036] In the second embodiment, based on the above embodiment, the end faces of several coil frames 1 are connected by connecting blocks 8 and through screw rods 10, and nuts 11 are threaded on both ends of the screw rods 10 for locking. A wire pressing assembly 14 is provided on the outside of the coil frames 1.

[0037] In this embodiment, one end of the connecting block 8 is connected to the outer end face of the coil frame 1, and the other end is connected to the end face of the support base 6. Then, multiple coil frames 1 are locked by the lead screw 10, the nut 11, and the stainless steel elastic washer 13 on the end face of the nut 11. A total of sixteen connecting blocks 8 are used at both ends to form multiple coils into a whole. This allows the subsequent tooling and multiple coil frames 1 to be installed as a whole on the winding machine. After the first coil is wound, it is only necessary to move the wire feeding frame and the wire pressing assembly 14 described below to the position of the next coil frame 1 to continue winding. There is no need to disassemble the tooling or replace the coil frames 1. Moreover, multiple coil frames 1 are connected into a whole to form a coaxial rigid assembly, which prevents the individual frames from shifting or deforming when the winding is under force. The vibration during winding is smaller and more stable.

[0038] Furthermore, the wire pressing assembly 14 includes a cantilever beam 1402 with one end threadedly connected to the wire feeding frame, and a wire pressing rod 1401 is provided at the other end of the cantilever beam 1402. A pin 1403 is hinged to the end of the cantilever beam 1402 and the wire pressing rod 1401. A spring 1404 is connected to the middle of the cantilever beam 1402 and the wire pressing rod 1401. A Teflon wire pressing block 1405 is bonded to the end of the wire pressing rod 1401 that contacts the superconducting wire 15, and the Teflon wire pressing block 1405 has different types of grooves on one side corresponding to the superconducting wire 15.

[0039] Specifically, after connecting one end of the winding shaft 2 to the winding machine, the cantilever beam 1402 of the wire pressing assembly 14 is threadedly connected to the pay-off frame. Then, the elastic force of the spring 1404 is adjusted so that the wire pressing rod 1401 hinged at the other end of the cantilever beam 1402, together with the Teflon wire pressing block 1405 with different types of grooves, presses the superconducting wire 15 onto the coil frame 1. At this time, the winding machine is started and moved synchronously with the pay-off frame to perform the winding work. After a single coil is wound, only the position of the wire pressing assembly 14 needs to be adjusted to wind the remaining coil frames 1 without changing the tooling.

[0040] Working principle: When using this winding fixture, firstly, install two linear ball bearings 5 ​​into the inner walls of the shaft holes at both ends of the central support 3, and then use fastening screws 12 to lock the linear ball bearings 5 ​​and the central support 3. Then, insert one end of the ball head of each of the eight threaded adjusting rods 4 into the interior of the support seat 6. Then, fix the cover plate 7 to the notch on one side of the top of the support seat 6 with fastening screws 12 to press the ball head end of the threaded adjusting rod 4.

[0041] Next, the threaded ends of multiple threaded adjusting rods 4 are inserted into the outer threaded holes of the central support 3. Then, multiple coil frames 1 connected in series by cylindrical pins 9 are fitted onto the outside of the central support 3. By rotating multiple threaded adjusting rods 4, the radial position of each support 6 relative to the central support 3 can be precisely adjusted so that the outer arc surface of the support 6 is in close contact with the inner wall of the coil frame 1. Furthermore, through the setting of the ball head structure, the outer arc surface of the support 6 can be in close contact with the inner wall of the coil frame 1 with different inner diameters and shapes. Thus, the same set of central supports 3 can not only adapt to circular frames with different diameters, but also adapt to non-circular or slightly irregular inner cavities of the frame through asymmetrical adjustment. The ball head structure design in the support 6 allows it to self-adapt to deflection within a small angle, ensuring good contact.

[0042] Next, the winding shaft 2 is passed through the inner hole of the linear ball bearing 5 and locked and fixed from the outer side wall of the center support 3 with the fastening screw 12. The rolling friction coefficient of the linear ball bearing 5 is much lower than that of traditional sliding friction, and the high-precision linear motion channel makes it very easy to insert or remove the winding shaft 2 into or out of the center support 3. Then, it can be locked with the fastening screw 12 on the side.

[0043] Next, one end of the connecting block 8 is connected to the outer end face of the coil frame 1, and the other end is connected to the end face of the support base 6. Then, multiple coil frames 1 are locked by the lead screw 10, the nut 11, and the stainless steel elastic washer 13 on the end face of the nut 11. A total of sixteen connecting blocks 8 are used at both ends to form multiple coils into a whole. This allows the subsequent tooling and multiple coil frames 1 to be installed as a whole on the winding machine. After the first coil is wound, the wire feeding frame and the wire pressing assembly 14 can be moved to the position of the next coil frame 1 to continue winding without disassembling the tooling or replacing the coil frame 1. Moreover, multiple coil frames 1 are connected into a whole to form a coaxial rigid assembly, which prevents the individual frame from shifting or deforming when the winding is under force. The vibration is smaller and more stable during winding.

[0044] Next, connect one end of the winding shaft 2 to the winding machine, and then thread the cantilever beam 1402 of the wire pressing assembly 14 to the pay-off frame. Then, adjust the spring force of the spring 1404 so that the wire pressing rod 1401 hinged to the other end of the cantilever beam 1402, together with the Teflon wire pressing block 1405 with different types of grooves, presses the superconducting wire 15 onto the coil frame 1. At this time, start the winding machine and move it synchronously with the pay-off frame to carry out the winding work. After a single coil is wound, only the position of the wire pressing assembly 14 needs to be adjusted to wind the remaining coil frames 1 without changing the tooling.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable winding fixture for multi-coil MCZ superconducting magnets, comprising a coil frame (1), characterized in that: The winding fixture also includes a winding shaft (2) and a central support (3). The outer circumference of the central support (3) is evenly distributed with multiple threaded holes, and the two ends of the central support (3) are provided with shaft holes. A linear ball bearing (5) is provided in the shaft hole of the central support (3), and the outer wall of the winding shaft (2) passes through the inner wall of the linear ball bearing (5). Several coil frames (1) have corresponding pin holes on their end faces, and at least two coil frames (1) are connected in series with each other by cylindrical pins (9). Eight threaded adjusting rods (4) are evenly spaced around the outer periphery of the central support (3). One end of each threaded adjusting rod (4) is a threaded structure, and the other end is a ball head structure. The ends of the eight threaded adjusting rods (4) facing each other are connected to the outer threaded hole of the central support (3) through a threaded connection. The ends of the eight threaded adjusting rods (4) that are far apart are movably connected to a support seat (6) through a ball head structure. The winding shaft (2) is a hollow tube structure. Both ends of the winding shaft (2) are provided with matching pin holes and clamping ends. The winding shaft (2) is locked to the side wall of the central support (3) by fastening screws (12). The outer contour of the support base (6) matches the inner wall of the coil frame (1), and the inner wall of the coil frame (1) is in contact with the multiple support bases (6); Each of the support bases (6) has a cover plate (7) on one side of its top, and the cover plate (7) is fixed and presses against the ball end of the threaded adjusting rod (4) by fastening screws (12); The end faces of several coil frames (1) are connected by a connecting block (8) and a through screw (10), and the two ends of the screw (10) are threaded with nuts (11) for locking. A wire pressing assembly (14) is provided on the outside of the coil frame (1). When installing the coil frame (1), the radial position of each support (6) relative to the central support (3) can be precisely adjusted by moving the eight threaded adjustment rods (4) respectively. This allows the same set of central supports (3) to not only adapt to circular coil frames (1) of different diameters, but also to adapt to non-circular or slightly irregular inner cavities of coil frames (1) through asymmetrical adjustment. The ball head structure design in the support (6) allows it to self-adapt to deflection within a small angle, ensuring good contact. The setting of the linear ball bearing (5) makes it very easy to insert or remove the winding shaft (2) from the central support (3), and subsequent wear mainly occurs on the replaceable linear ball bearing (5), thereby improving the ease of replacement of the winding shaft (2). When installing the coil frame (1), multiple coil frames (1) can be locked by using the lead screw (10) with the nut (11) and the stainless steel elastic washer (13) provided on the end face of the nut (11). A total of sixteen connecting blocks (8) are used at both ends to form multiple coil frames (1) into a whole. This allows the subsequent tooling and multiple coil frames (1) to be installed as a whole on the winding machine. After winding a coil, you only need to move the wire feeding frame and the wire pressing assembly (14) to the position of the next coil frame (1) to continue winding without disassembling the tooling or replacing the coil frame (1). Furthermore, multiple coil frames (1) are connected as a whole to form a coaxial rigid assembly, preventing the individual coil frame (1) from shifting or deforming when the winding is under force.

2. The adjustable winding fixture for multi-coil MCZ superconducting magnets according to claim 1, characterized in that, The linear ball bearing (5) is fixed to the side wall of the central support (3) by at least two circumferentially distributed fastening screws (12), and the inner ring of the linear ball bearing (5) is clearance-fitted with the outer wall of the winding shaft (2).

3. The adjustable winding fixture for multi-coil MCZ superconducting magnets according to claim 1, characterized in that, The connecting block (8) is a right-angled plate structure. One end of the connecting block (8) is fixed to the end face of the coil frame (1) by a fastening screw (12), and the other end of the connecting block (8) has a through hole for the lead screw (10) to pass through. The end face of the nut (11) is provided with a stainless steel elastic washer (13).

4. The adjustable winding fixture for multi-coil MCZ superconducting magnets according to claim 1, characterized in that, The wire pressing assembly (14) includes a cantilever beam (1402) with one end threadedly connected to the wire feeding frame, and a wire pressing rod (1401) is provided at the other end of the cantilever beam (1402). A pin (1403) is hinged to the end of the cantilever beam (1402) and the wire pressing rod (1401). A spring (1404) is connected to the middle of the cantilever beam (1402) and the wire pressing rod (1401). A Teflon wire pressing block (1405) is bonded to the end of the wire pressing rod (1401) that contacts the superconducting wire (15), and different types of grooves are opened on one side of the superconducting wire (15) corresponding to the Teflon wire pressing block (1405).

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