An intelligent coil winding machine based on starting motor production
By designing an intelligent coil winding machine, the telescopic components are used to drive the conduit for radial centrifugal movement, the problem of uneven winding of the coil winding is solved, the copper wire tension and compactness balance is achieved, and the quality of the coil winding is improved.
Patent Information
- Application Number
- CN202411038841.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2044-07-31
AI Technical Summary
In the prior art, the coil winding is unevenly wound on the motor stator, resulting in changes in tension of copper wire and inconsistent tightness, which affects the quality of the coil winding.
An intelligent coil winding machine is designed. By extruding the motor stator to the T-shaped telescopic block, the stator groove is located below the first guide plate, and the first conductor tube is driven to perform radial centrifugal movement using the telescopic component, gradually tightening the loose copper wire to ensure that the copper wire tension reaches a balanced state.
The uniformity and consistency of copper wire winding on the motor stator is achieved, and the quality of the coil winding is improved.
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Figure CN118920801B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of coil winding, and in particular to an intelligent coil winding machine based on the production of a starter motor. Background Art
[0002] In the production process of the starter motor, coil winding is a key link. In the past, manual winding often had problems such as low efficiency, low precision, and complicated operation. Therefore, in order to meet the needs of modern industrial production, machine winding is used to replace manual winding. Figure 1 The winding machine in the prior art puts the motor stator on the rotating shaft 26, and the motor stator is against the T-shaped telescopic block 13, so that the T-shaped telescopic block 13 shrinks to the right, and the first wire tube 5 is rotated to make the copper wire wind around the motor stator. During this period, the copper wire hits the second guide plate 34 under the action of traction, slides into the space between the two second guide plates 34 along the slope at the top of the second guide plate 34, and slides into the stator slot on the motor stator under the guidance of the end of the first guide plate 12. In this way, the copper wire is gradually wound around the motor stator to form a coil winding. In order to make the winding evenly distributed on the stator In the slot, during the winding process, the motor stator and the rotating shaft 26 will slowly move to the left, so that the copper wire is evenly wound in the stator slot. However, during this stroke, since the motor stator and the rotating shaft 26 are moving, as the motor stator and the rotating shaft 26 move to the left, the copper wire is gradually wound in the stator slot, and the sliding distance of the copper wire on the rotating shaft 26 becomes shorter and shorter, that is, when the copper wire is wound into the stator slot, the smaller the bending degree, the copper wire becomes loose, and the tension of the copper wire changes. The tightness of the copper wire winding is not as good as at the beginning, which makes the coil winding uneven. Summary of the invention
[0003] The purpose of the present invention is to provide an intelligent coil winding machine based on the production of starter motors to solve the above-mentioned shortcomings in the prior art.
[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent coil winding machine based on the production of starting motors, comprising: a frame, a fixed block fixedly connected to the frame, one end of the fixed block fixedly connected to two first guide plates, a T-shaped telescopic block slidably arranged between the two first guide plates, a shell rotatably arranged on the fixed block, an N-shaped plate and a telescopic assembly slidably arranged in the shell, one end of the N-shaped plate rotatably connected to the T-shaped telescopic block, the T-shaped telescopic block is connected to the inner wall of the fixed block by a spring, a first wire tube is fixedly connected to the movable end of the telescopic assembly, a stator drive assembly for moving the motor stator and a guide assembly for guiding the stator drive assembly are arranged on one side of the T-shaped telescopic block, when the first wire tube winds the motor stator sleeved on the stator drive assembly, as the stator drive assembly gradually moves away from the first guide plate, the first wire tube performs radial centrifugal motion driven by the telescopic assembly.
[0005] Furthermore, the telescopic assembly includes a screw sleeve, which is connected to the housing via a second bearing. The inner thread of the screw sleeve is connected to a screw rod, and the top end of the screw rod is fixedly connected to the first wire tube.
[0006] Furthermore, a third spur gear is fixedly sleeved outside the screw sleeve, and a tooth groove is provided on a side of the N-shaped plate close to the third spur gear, and the tooth groove is meshed with the third spur gear.
[0007] Furthermore, a connecting rod is fixedly connected to the T-shaped telescopic block, and the connecting rod is connected to the N-shaped plate via a third bearing.
[0008] Furthermore, a second wire tube is fixedly installed in the shell, and the first wire tube is slidably sleeved on the second wire tube.
[0009] Furthermore, the stator drive assembly includes a slide seat, two slide rods are fixedly mounted on the frame, the slide seat is slidably arranged on the two slide rods, a second motor is fixedly mounted on the slide seat, a rotating shaft is fixedly connected to the top of the second motor, and an electric telescopic rod is arranged between the slide seat and the frame.
[0010] Furthermore, the guide assembly includes a slide plate, a fixed plate is provided on each side of the stator drive assembly, a first slide groove is provided on the fixed plate, the slide plate is slidably arranged in the first slide groove, a connecting plate is fixedly connected to the top of the slide plate, a second guide plate is fixedly connected to the connecting plate, and a second slide groove is provided on the side of the slide plate close to the stator drive assembly.
[0011] Furthermore, two symmetrically arranged sliding blocks are fixedly connected to the slide seat, and the sliding blocks are slidably arranged in the second sliding groove. A permanent magnet is embedded in the sliding block, and an electromagnet is installed on the inner wall of the second sliding groove. The permanent magnet and the electromagnet attract each other.
[0012] Furthermore, a resistor bar is embedded in the side wall of the first slide slot, and a contact electrically connected to the electromagnet is provided on the slide plate, and the length of the resistor bar connected to the circuit is changed by moving the slide plate.
[0013] Furthermore, the fixing block is connected to the housing via a first bearing, and an axis of the first bearing is the same as an axis of the third bearing.
[0014] In the above technical solution, the intelligent coil winding machine based on the production of the starter motor provided by the present invention has the beneficial effects:
[0015] The present invention first squeezes the motor stator into a T-shaped telescopic block so that the stator slot is located below the first guide plate. During this process, the telescopic component drives the first wire tube to perform radial centripetal movement, and then the first wire tube is rotated to start winding the motor stator. In the process that the motor stator gradually moves away from the first guide plate, the telescopic component drives the first wire tube to perform radial centrifugal movement, so that the first wire tube and the stator slot are increasingly far apart, and the loose copper wire is gradually tightened, and then the tension of the copper wire tends to a balanced state, so that the copper wire is wound in the stator slot and distributed more evenly, the compactness tends to be consistent, and the obtained coil winding has higher quality.
[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
[0017] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0019] Figure 1 A schematic diagram of the structure of a winding mechanism of a prior art winding machine provided by an embodiment of the present invention;
[0020] Figure 2 A schematic diagram of the structure provided by an embodiment of the present invention;
[0021] Figure 3 The embodiment of the present invention provides Figure 2 A magnified image;
[0022] Figure 4 A bottom-up structural schematic diagram provided for an embodiment of the present invention;
[0023] Figure 5 A cross-sectional view provided for an embodiment of the present invention;
[0024] Figure 6 The embodiment of the present invention provides Figure 5 Enlarged view of point B;
[0025] Figure 7 A schematic diagram of the structure of a telescopic assembly provided in an embodiment of the present invention;
[0026] Figure 8 A cross-sectional view of a guide assembly provided in an embodiment of the present invention;
[0027] Fig. 9 A schematic structural diagram of a winding machine in winding state provided by an embodiment of the present invention.
[0028] Description of reference numerals:
[0029] 1. Frame; 11. Fixed block; 12. First guide plate; 13. T-shaped telescopic block; 14. Slide bar; 15. First motor; 16. First spur gear; 2. Stator drive assembly; 21. Slide seat; 23. Second motor; 25. Sliding block; 251. Permanent magnet; 26. Rotating shaft; 3. Guide assembly; 31. Fixed plate; 311. First slide slot; 312. Resistance bar; 32. Slide plate; 321. Second slide slot; 33. Connecting plate; 34. Second guide plate; 5. First wire tube; 51. Second wire tube; 6. Electric telescopic rod; 71. Housing; 72. Screw rod; 73. Second spur gear; 74. First bearing; 75. Screw sleeve; 76. Second bearing; 77. Third spur gear; 8. N-shaped plate; 81. Tooth slot; 82. Connecting rod; 83. Third bearing; 9. Spring; 10. Electromagnet. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.
[0031] Please refer to 2-9, an intelligent coil winding machine based on the production of a starter motor, comprising: a frame 1, a fixed block 11 is fixedly connected to the frame 1, one end of the fixed block 11 is fixedly connected to two first guide plates 12, a T-shaped telescopic block 13 is slidably arranged between the two first guide plates 12, a shell 71 is rotatably arranged on the fixed block 11, a second spur gear 73 is fixedly sleeved on the outer side of the shell 71, a first motor 15 is installed on the frame 1, the output shaft of the first motor 15 is fixedly sleeved with a first spur gear 16, the first spur gear 16 is meshed with the second spur gear 73, the first motor 15 is a servo motor, and is used together with a reducer when necessary, an N-shaped plate 8 and a telescopic assembly are slidably arranged in the shell 71, one end of the N-shaped plate 8 is rotatably connected to the T-shaped telescopic block 13, and the T-shaped telescopic block 13 is rotatably sleeved with the fixed block 11. The inner walls of the blocks 11 are connected by a spring 9, one end of the spring 9 is fixedly connected to the T-shaped telescopic block 13, and the other end of the spring 9 is fixedly connected to the inner wall of the fixed block 11. When the T-shaped telescopic block 13 is squeezed, it overcomes the elastic force of the spring 9 and slides in the fixed block 11, and then pushes the N-shaped plate 8, so that the N-shaped plate 8 drives the telescopic component to telescope, and the movable end of the telescopic component is fixedly connected with a first wire tube 5, and one side of the T-shaped telescopic block 13 is provided with a stator drive component 2 for moving the motor stator and a guide component 3 for guiding the stator drive component 2. When the first wire tube 5 winds the motor stator sleeved on the stator drive component 2, as the stator drive component 2 gradually moves away from the first guide plate 12, the first wire tube 5 performs radial centrifugal motion driven by the telescopic component.
[0032] Specifically, refer to Figures 2 to 9 The present invention first squeezes the motor stator against the T-shaped telescopic block 13 so that the stator slot is located below the first guide plate 12. During this process, the telescopic component drives the first wire tube 5 to perform radial centripetal movement, and then rotates the first wire tube 5 to start winding the motor stator. As the motor stator gradually moves away from the first guide plate 12, the telescopic component drives the first wire tube 5 to perform radial centrifugal movement, so that the first wire tube 5 is farther and farther away from the stator slot, and the loose copper wire is gradually tightened, and then the tension of the copper wire tends to a balanced state, so that the copper wire is more evenly distributed in the stator slot, the compactness tends to be consistent, and the obtained coil winding has higher quality.
[0033] Furthermore, the telescopic assembly includes a screw sleeve 75, which is connected to the housing 71 through a second bearing 76. The outer ring of the second bearing 76 is embedded in the housing 71, and the inner ring of the second bearing 76 is fixedly sleeved on the screw sleeve 75. The screw sleeve 75 is threadedly connected to a screw rod 72, and the top of the screw rod 72 is fixedly connected to the first wire tube 5. The screw sleeve 75 is externally fixedly sleeved with a third spur gear 77. A tooth groove 81 is provided on the side of the N-shaped plate 8 close to the third spur gear 77, and the tooth groove 81 is meshed with the third spur gear 77. By making the N-shaped plate 8 into an N shape, the axis of the third spur gear 77 can be perpendicular to the axis of the housing 71, ensuring that the first wire tube 5 moves on the axis of the third spur gear 77, and is more stable when the first wire tube 5 makes radial centripetal motion or radial centrifugal motion.
[0034] Specifically, refer to Figure 3 When the N-shaped plate 8 slides to the right, the tooth groove 81 drives the third spur gear 77 to rotate, causing the screw sleeve 75 to rotate. Under the limiting action of the second bearing 76, the screw rod 72 moves downward along the axis of the screw sleeve 75, causing the first wire tube 5 to move radially and centripetally.
[0035] Furthermore, a connecting rod 82 is fixedly connected to the T-shaped telescopic block 13 , and the connecting rod 82 is connected to the N-shaped plate 8 through a third bearing 83 . The outer ring of the third bearing 83 is embedded in the N-shaped plate 8 , and the inner ring of the third bearing 83 is fixedly sleeved on the connecting rod 82 .
[0036] Specifically, refer to Figure 2 and Figure 3 When the motor stator sleeved on the stator drive assembly 2 squeezes the T-shaped telescopic block 13, the T-shaped telescopic block 13 slides to the right, thereby causing the connecting rod 82 and the N-shaped plate 8 to slide to the right, and then driving the telescopic assembly to drive the first wire tube 5 to make radial centripetal motion. When the shell 71 rotates, the first wire tube 5 is driven to rotate to wind the motor stator. At this time, due to the action of the third bearing 83, the N-shaped plate 8 rotates with the shell 71 without affecting the connecting rod 82 and the T-shaped telescopic block 13.
[0037] Furthermore, a second wire tube 51 is fixedly installed in the shell 71, and the first wire tube 5 is slidably sleeved on the second wire tube 51. The second wire tube 51 is installed inside the shell 71 and extends out of the shell 71 in the axial direction of the shell 71. A wire drum is installed on the frame 1. The copper wire is pulled out from the wire drum and passes through the tension control component and then into the second wire tube 51 and the first wire tube 5. The tension control component can be a tension adjustment wheel.
[0038] Furthermore, the stator drive assembly 2 includes a slide 21, two slide bars 14 are fixedly mounted on the frame 1, the slide 21 is slidably arranged on the two slide bars 14, a second motor 23 is fixedly mounted on the slide 21, the second motor 23 is a servo motor, and can be used with a reducer, a rotating shaft 26 is fixedly connected to the top of the second motor 23, the motor stator is sleeved on the rotating shaft 26, a block for limiting the rotation of the motor stator is arranged on the rotating shaft 26, so that the motor stator is fixedly sleeved outside the rotating shaft 26 and rotates with the rotating shaft 26, an electric telescopic rod 6 is arranged between the slide 21 and the frame 1, the base of the electric telescopic rod 6 is mounted on the frame 1, and its movable end is fixedly connected to the slide 21, by controlling the movement of the slide 21, and then during winding, the motor stator can gradually move away from the first guide plate 12, so that the copper wire is evenly wound in the stator slot, thereby improving the quality of the coil winding.
[0039] Further, the guide assembly 3 includes a slide plate 32, a fixed plate 31 is provided on each side of the stator drive assembly 2, a first slide groove 311 is provided on the fixed plate 31, the slide plate 32 is slidably arranged in the first slide groove 311, a connecting plate 33 is fixedly connected to the top of the slide plate 32, a second guide plate 34 is fixedly connected to the connecting plate 33, a second slide groove 321 is provided on the slide plate 32 close to the stator drive assembly 2, two symmetrically arranged sliders 25 are fixedly connected to the slide seat 21, the slider 25 is slidably arranged in the second slide groove 321, a permanent magnet 251 is embedded in the slider 25, an electromagnet 10 is installed on the inner wall of the second slide groove 321, the permanent magnet 251 and the electromagnet 10 attract each other, a resistor bar 312 is embedded in the side wall of the first slide groove 311, a contact electrically connected to the electromagnet 10 is provided on the slide plate 32, and the length of the resistor bar 312 connected to the circuit is changed by moving the slide plate 32, refer to Figure 8 One end of the coil in the electromagnet 10 is connected to a contact, point c is a contact, end b is connected to the circuit, and point a on the resistor bar 312 is connected to the circuit, so that when the slide plate 32 slides in the first slide groove 311, the length of the resistor bar 312 connected to the circuit is different, which leads to different total resistance of the circuit, thereby playing a role in adjusting the current size, and then the size of the magnetic force of the electromagnet 10 can be adjusted.
[0040] Furthermore, the fixed block 11 is connected to the housing 71 via a first bearing 74 , the outer ring of the first bearing 74 is embedded in the fixed block 11 , the inner ring of the first bearing 74 is fixedly sleeved on the housing 71 , and the axis of the first bearing 74 is the same as the axis of the third bearing 83 .
[0041] Specifically, by arranging the first bearing 74 and the third bearing 83 coaxially, the housing 71 can rotate stably when driven by the first motor 15 .
[0042] In the present invention, reference is made to Figures 2 to 9First, the motor stator is fixedly sleeved on the rotating shaft 26, and then the slide 21 is pulled close to the second guide plate 34 by the electric telescopic rod 6. Figure 8 At this time, the slider 25 slides to the right in the second slide groove 321 until the slider 25 contacts the inner wall of the second slide groove 321, and the permanent magnet 251 and the electromagnet 10 are adsorbed together due to the magnetic force, and the second guide plate 34 covers the motor stator. As the slide seat 21 continues to slide on the slide rod 14, the slide plate 32 slides in the first slide groove 311 driven by the slide seat 21, and then the motor stator squeezes the T-shaped telescopic block 13, the spring 9 is compressed, and the tooth groove 81 starts to drive the third spur gear 77 to rotate. Under the limiting action of the second bearing 76, the screw sleeve 75 rotates in place, and the screw rod 72 moves vertically downward in the screw sleeve 75 until the stator slot is located below the first guide plate 12. The electric telescopic rod 6 stops driving the slide seat 21 to move, and then drives the housing 71 to rotate through the first motor 15, and the first wire tube 5 starts to wind the stator slot. The position of the stator slot is referenced Fig. 9 At the position d in the middle, the electric telescopic rod 6 drives the slide 21 to gradually move away from the first guide plate 12. Under the adsorption effect of the permanent magnet 251 and the electromagnet 10, the slide 21 drives the second guide plate 34 to move synchronously. Figure 6 , the T-shaped telescopic block 13 pulls the N-shaped plate 8 to move leftward under the elastic force of the spring 9, the tooth groove 81 drives the third spur gear 77 to rotate, and under the limiting action of the second bearing 76, the screw sleeve 75 rotates in place, and the screw rod 72 drives the first wire tube 5 to do radial centrifugal movement, straightening the copper wire that has begun to relax, ensuring the tightness of the coil winding. Then, after the stator slot coil winding is wound, the second motor 23 controls the rotation shaft 26 to rotate, and then controls the motor stator to rotate, and other stator slots are wound. Finally, after the stator processing is completed, refer to Figure 3 and Figure 8 The electric telescopic rod 6 pushes the slide 21. Under the adsorption effect of the permanent magnet 251 and the electromagnet 10, the slide 21 drives the slide plate 32 to move to the left synchronously. As the movement of the slide plate 32 increases, the resistance of the connected circuit increases, which makes the current in the coil of the electromagnet 10 smaller, and then the suction force between the permanent magnet 251 and the electromagnet 10 smaller. Finally, when the side wall of the slide plate 32 contacts the inner wall of the first slide groove 311, the electromagnet 10 is separated from the permanent magnet 251, and the electric telescopic rod 6 continues to drive the slide 21 to move a distance, so that the motor stator and the second guide plate 34 are automatically separated, which is convenient for taking the motor stator.
[0043] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. An intelligent coil winding machine based on the production of a starter motor, comprising: A frame (1), wherein a fixed block (11) is fixedly connected to the frame (1), one end of the fixed block (11) is fixedly connected to two first guide plates (12), and a T-shaped telescopic block (13) is slidably arranged between the two first guide plates (12), characterized in that: a shell (71) is rotatably arranged on the fixed block (11), an N-shaped plate (8) and a telescopic assembly are slidably arranged in the shell (71), one end of the N-shaped plate (8) is rotatably connected to the T-shaped telescopic block (13), and the T-shaped telescopic block (13) is slidably arranged with the inner wall of the fixed block (11). The two guide plates (12) are connected by a spring (9), the movable end of the telescopic assembly is fixedly connected to a first wire tube (5), one side of the T-shaped telescopic block (13) is provided with a stator drive assembly (2) for moving the motor stator and a guide assembly (3) for guiding the stator drive assembly (2), when the first wire tube (5) is winding the motor stator sleeved on the stator drive assembly (2), as the stator drive assembly (2) gradually moves away from the first guide plate (12), the first wire tube (5) performs radial centrifugal movement driven by the telescopic assembly; The telescopic assembly comprises a screw sleeve (75), the screw sleeve (75) is connected to the housing (71) via a second bearing (76), the screw sleeve (75) is internally threadedly connected to a screw rod (72), and the top end of the screw rod (72) is fixedly connected to the first wire tube (5); A third spur gear (77) is fixedly sleeved outside the screw sleeve (75), and a tooth groove (81) is formed on a side of the N-shaped plate (8) close to the third spur gear (77), wherein the tooth groove (81) meshes with the third spur gear (77).
2. The intelligent coil winding machine based on the production of starting motor according to claim 1 is characterized in that: A connecting rod (82) is fixedly connected to the T-shaped telescopic block (13), and the connecting rod (82) is connected to the N-shaped plate (8) via a third bearing (83).
3. The intelligent coil winding machine based on the production of starting motor according to claim 1 is characterized in that: A second wire tube (51) is fixedly installed in the housing (71), and the first wire tube (5) is slidably sleeved on the second wire tube (51).
4. The intelligent coil winding machine based on the production of starting motor according to claim 1 is characterized in that: The stator drive assembly (2) comprises a slide seat (21), two slide bars (14) are fixedly mounted on the frame (1), the slide seat (21) is slidably arranged on the two slide bars (14), a second motor (23) is fixedly mounted on the slide seat (21), a rotating shaft (26) is fixedly connected to the top of the second motor (23), and an electric telescopic rod (6) is arranged between the slide seat (21) and the frame (1).
5. The intelligent coil winding machine based on the production of starting motor according to claim 4 is characterized in that: The guide assembly (3) comprises a slide plate (32), a fixed plate (31) is provided on each side of the stator drive assembly (2), a first slide groove (311) is provided on the fixed plate (31), the slide plate (32) is slidably arranged in the first slide groove (311), a connecting plate (33) is fixedly connected to the top of the slide plate (32), a second guide plate (34) is fixedly connected to the connecting plate (33), and a second slide groove (321) is provided on a side of the slide plate (32) close to the stator drive assembly (2).
6. The intelligent coil winding machine based on the production of starting motor according to claim 5 is characterized in that: Two symmetrically arranged sliding blocks (25) are fixedly connected to the sliding seat (21); the sliding blocks (25) are slidably disposed in the second sliding groove (321); a permanent magnet (251) is embedded in the sliding block (25); an electromagnet (10) is mounted on the inner wall of the second sliding groove (321); the permanent magnet (251) and the electromagnet (10) attract each other.
7. The intelligent coil winding machine based on the production of starting motors according to claim 6 is characterized in that: A resistor bar (312) is embedded in the side wall of the first slide groove (311), and a contact point electrically connected to the electromagnet (10) is provided on the slide plate (32). The length of the resistor bar (312) connected to the circuit is changed by moving the slide plate (32).
8. The intelligent coil winding machine based on the production of starting motors according to claim 2 is characterized in that: The fixing block (11) and the housing (71) are connected via a first bearing (74), and the axis of the first bearing (74) is the same as the axis of the third bearing (83).
Citation Information
Patent Citations
Automatic multi-wire winding machine
CN103872866A
High-speed brushless motor stator multi-strand enameled round copper wire automatic winder
CN105656264A