Manual rotor enameled wire dismounting tool

By designing a tooling for manually removing the rotor enameled wire, and utilizing the combination of product positioning components, enameled wire guiding components, and winding components, the problem of time-consuming manual removal of rotor enameled wire is solved, achieving efficient and uniform enameled wire winding, and adapting to rotors of different specifications.

CN115085487BActive Publication Date: 2026-01-06SUZHOU SHUANGHANG ELECTRICAL CO LTD
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Patent Information

Application Number
CN202210918545.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-01
Publication Date
2026-01-06
Estimated Expiration
2042-08-01

AI Technical Summary

Technical Problem

Manually disassembling the rotor's enameled wires is time-consuming, resulting in low work efficiency.

Method used

Design a tooling for manually unwinding enameled wire from a rotor, including a product positioning component, an enameled wire guiding component, and a winding component. Through the synergistic effect of these components, automated winding of the enameled wire is achieved.

Benefits of technology

It improves the winding efficiency of enameled wire, ensures uniform winding of enameled wire, reduces operating force, adapts to rotors of different specifications, and saves operation time.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to a manual rotor enameled wire removal fixture, belonging to the field of permanent magnet brushed DC motor technology. It includes a product positioning component, an enameled wire guiding component for guiding the rotor enameled wire, and a winding component, sequentially arranged on a base plate. The product positioning component includes several support plates on the base plate, each with a rotating groove on its top wall for placing and rotating the rotor. The winding component includes several mounting plates on the base plate, each with a mounting groove between them for placing and rotating the winding frame. The winding frame is connected to a rotating component for rotating the winding frame. The rotor can be placed on the rotating groove of the support plate first, then the enameled wire can be manually pulled through the enameled wire guiding component and wound onto the winding frame. Then, by rotating the rotating component, the winding frame can be rotated, continuously winding the enameled wire from the rotor. The three components working together to wind the enameled wire save time and effort, improving work efficiency.
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Description

Technical Field

[0001] This application relates to the field of permanent magnet brushed DC motors, and in particular to a tool for manually removing the rotor enameled wire. Background Technology

[0002] Enameled wire is a type of electromagnetic wire, used to manufacture insulated wires for coils or windings in electrical products.

[0003] The rotor is one of the most important components of a permanent magnet brushed DC motor. In the process of producing permanent magnet brushed DC motors, related companies often disassemble the enameled wires on the rotor manually for production needs.

[0004] In the process of realizing the above-mentioned related technologies, the inventors found that the technology has at least the following problems: when manually disassembling the rotor enameled wire, it takes a long time to disassemble because one hand needs to hold the rotor and the other hand needs to wind up the enameled wire, resulting in low work efficiency, which needs to be improved. Summary of the Invention

[0005] To improve work efficiency, this application provides a tooling for manually removing rotor enameled wires.

[0006] The technical solution for a manual rotor enameled wire removal tool provided in this application is as follows:

[0007] A manual rotor enameled wire removal fixture includes a product positioning component, an enameled wire guiding component for guiding the rotor enameled wire, and a winding component arranged sequentially on a base plate. The product positioning component includes a plurality of support plates disposed on the base plate, each of which has a rotating groove on its top wall for placing and rotating the rotor. The winding component includes a plurality of mounting plates disposed on the base plate, each of which has a mounting groove between it for placing and rotating the winding frame. The winding frame is connected to a rotating component for rotating the winding frame.

[0008] By adopting the above technical solution, the rotor can be placed on the rotating slot of the support plate first. Then, the enameled wire is manually pulled through the enameled wire guide assembly and wound onto the winding frame. Next, by rotating the rotating assembly, the winding frame is driven to rotate, thus continuously winding the enameled wire on the rotor. The product positioning assembly serves to place the rotor, the enameled wire guide assembly guides the enameled wire, and the winding assembly continuously winds the wire. The three components working together to wind the enameled wire save time and effort, improving work efficiency.

[0009] Optionally, the enameled wire guiding assembly includes a guide block and a fixing plate disposed on the base plate. The fixing plate has a moving groove for sliding the guide block on its side wall near the product positioning assembly, and a passage hole for the enameled wire to pass through is provided through the side wall of the fixing plate near the product positioning assembly.

[0010] By adopting the above technical solution, the guide block is moved to adapt to rotors of different specifications. The guide block is moved to the corresponding position in the moving slot, and then the enameled wire is passed through the passage hole. The passage hole can limit the winding range of the enameled wire and prevent uneven winding of the enameled wire.

[0011] Optionally, the product positioning component further includes a positioning slide rail, which is fixedly connected to the base plate, and the plurality of support plates are slidably connected to the positioning slide rail.

[0012] By adopting the above technical solution, when the specifications of the disassembled rotors are different, the base plate on the moving positioning slide rail can be used to adapt to the specifications of the rotors; thus adapting to rotors of various specifications and saving operation time.

[0013] Optionally, the bottom wall of the support plate is provided with a locking hole, and a locking bolt is threaded into the locking hole. The top wall of the base plate is provided with a fixed elongated hole for the locking bolt to pass through and slide.

[0014] By adopting the above technical solution, the support plate can be moved by loosening the locking bolts when it needs to be moved, and the support plate can be moved to the desired position by tightening the locking bolts. The detachable structure of the support plate and the base plate makes it easy to adjust the position of the support plate.

[0015] Optionally, the guide block has a mounting hole, and a mounting bolt is threaded into the mounting hole; the movable groove has a through-hole for the mounting bolt to pass through and slide.

[0016] By adopting the above technical solution, when the guide block needs to be moved, simply loosen the mounting bolts to move it; when the guide block is moved to the desired position, simply tighten the mounting bolts. This structure facilitates the movement of the guide block to guide rotors of different specifications.

[0017] Optionally, the cable reel includes a long rod, a connecting rod, and a crossbar; the long rod is rotatably connected to the mounting plate, the connecting rod is connected to the long rod, and the crossbar is connected to one end of the connecting rod.

[0018] By adopting the above technical solution, the enameled wire can be wound onto the crossbar, making it easier to wind the enameled wire evenly; by rotating the long bar, the connecting rod is driven, and the connecting rod drives the crossbar, thereby realizing the continuous winding of the enameled wire.

[0019] Optionally, each end of the crossbar has a insertion hole, and each insertion hole is threaded with a fixing bolt. The screw portion of the fixing bolt is fitted with a baffle to prevent the enameled wire from slipping out of the crossbar.

[0020] By adopting the above technical solution, during the process of winding the enameled wire onto the crossbar, the baffle can prevent the enameled wire from slipping off the crossbar. At the same time, the size of the baffle can be adjusted according to the number of turns of the enameled wire. When the baffle needs to be replaced, unscrew the fixing bolt, take out the baffle, then put another baffle on the screw part of the fixing bolt, and then screw the fixing bolt into the insertion hole.

[0021] Optionally, the rotating assembly includes a rocker arm and a handle, one end of the rocker arm being fixedly connected to one end of the long rod, and the other end of the rocker arm being connected to the handle.

[0022] By adopting the above technical solution, rotating the handle drives the rocker arm to rotate, and rotating the rocker arm drives the long rod to rotate. Compared with directly rotating the long rod, this structure increases the lever arm, which can reduce the force required for rotation.

[0023] Optionally, an adjustment module is provided on the side of the fixing plate near the mounting plate. The adjustment module includes a wire control assembly and a transmission assembly. The transmission assembly includes a first transmission gear and a second transmission gear, the second transmission gear meshing with the first transmission gear. The wire control assembly includes a sliding plate and a connecting rod. The base plate has a sliding groove for the sliding plate to slide, and the sliding plate has a reversing hole for the enameled wire to pass through. The end of the sliding plate near the connecting rod is rotatably connected, the other end of the connecting rod is rotatably connected to the side of the second transmission gear, and the second transmission gear is rotatably connected to the long rod.

[0024] By adopting the above technical solution, the enameled wire is passed through the reversing hole. When the long rod is rotated, the long rod drives the second transmission gear to rotate, the second transmission gear drives the first transmission gear, and the first transmission gear drives the connecting rod to rotate. The connecting rod drives the slide plate to slide in the sliding groove, thereby causing the enameled wire to change direction, so that the enameled wire is evenly wound on the winding frame.

[0025] Optionally, the connecting rod includes an outer rod and an inner rod. The second transmission gear has a plurality of adjustment holes on its side wall away from the long rod for adjusting the movement distance of the sliding plate, and the adjustment holes are evenly distributed along the length direction of the long rod. The inner rod is rotatably connected to the adjustment holes, and a positioning hole is opened on the side of the inner rod, and a positioning bolt is threaded into the positioning hole. The outer rod has a telescopic hole for the inner rod to slide at one end away from the connection with the sliding plate, and a plurality of distance control holes are opened on the side of the outer rod for the positioning bolt to pass through, and the distance control holes are evenly distributed along the length direction of the outer rod.

[0026] By adopting the above technical solution, the positioning hole on the inner rod is aligned with the corresponding control hole, and then the positioning bolt is inserted into the corresponding control hole. The part of the positioning bolt extending out of the control hole is threaded into the positioning hole, and the positioning bolt is tightened to fix the inner rod on the outer rod. In this way, the straight distance from the slide plate to the second transmission gear can be adjusted. At the same time, the rotating shaft is moved into the corresponding adjustment hole to control the movement distance of the slide plate. By correspondingly changing the straight distance from the slide plate to the second transmission gear and the movement distance of the slide plate, it can be ensured that the slide plate always passes through the middle position of the sliding groove in the length direction, thereby ensuring that the enameled wire is wound on the two crossbars.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. A product positioning component, an enameled wire guide component, and a wire winding component are sequentially installed on the base plate to improve the efficiency of winding the enameled wire;

[0029] 2. An adjustment module is provided between the enameled wire guide assembly and the winding assembly to ensure that the enameled wire is evenly wound on the winding frame. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the rotor structure in an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the structure of an embodiment of this application;

[0032] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the guide block and the moving groove in an embodiment of this application;

[0033] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the crossbar and the baffle in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram illustrating the structure of the adjustment module in an embodiment of this application;

[0035] Figure 6 This is a schematic diagram illustrating the connection between the inner rod and the second transmission gear in an embodiment of this application;

[0036] Figure 7 This is a structural schematic diagram used in the embodiments of this application to illustrate the connection relationship between the connecting rod and the inner rod;

[0037] Figure 8 This is a structural schematic diagram illustrating the connection relationship between the support plate and the base plate in an embodiment of this application;

[0038] Figure 9 This is a structural diagram illustrating the connection relationship between the guide block and the fixed plate in an embodiment of this application.

[0039] In the diagram: 1. Product positioning assembly; 11. Support plate; 111. Rotating groove; 112. Locking hole; 12. Positioning slide rail; 13. Locking bolt; 14. Fixing elongated hole; 2. Enamelled wire guide assembly; 21. Guide block; 211. Mounting hole; 22. Fixing plate; 23. Moving groove; 24. Passage hole; 25. Through elongated hole; 26. Mounting bolt; 3. Wire winding assembly; 31. Mounting plate; 311. Mounting groove; 32. Wire winding frame; 321. Long rod; 322. Connecting rod; 323. Crossbar; 3231. Insertion hole; 3232. Fixing bolt; 3233. Baffle plate; 4. Base plate; 41. Sliding groove; 5. Adjustment module; 51. Control line assembly; 511. Slide plate; 5111. Directional hole; 512. Connecting rod; 5121. Telescopic hole; 5122. Distance control hole; 5123. Outer rod; 5124. Inner rod; 5131. Positioning hole; 5132. Positioning bolt; 52. Transmission assembly; 521. First transmission gear; 522. Second transmission gear; 5221. Adjustment hole; 5222. Rotating shaft; 6. Rotating assembly; 61. Rocker arm; 62. Handle; 7. Rotor; 71. Iron core; 72. Enamelled wire; 73. Rotor shaft; 8. First bearing; 9. Second bearing. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0041] Reference Figure 1 The rotor 7 of the permanent magnet brushed DC motor includes an iron core 71, enameled wire 72 and rotor shaft 73. Due to actual production needs, the staff needs to remove and collect the enameled wire 72 on the rotor 7.

[0042] This application discloses a tooling for manually removing the enameled wire from a rotor. (Refer to...) Figure 2 A manual rotor enameled wire disassembly fixture includes a product positioning component 1, an enameled wire guiding component 2, and a wire winding component 3, which are sequentially arranged on a base plate 4.

[0043] Product positioning component 1 includes a positioning slide rail 12 fixed on the base plate 4. Two opposing support plates 11 are slidably connected on the positioning slide rail 12. The top walls of the two support plates 11 are provided with rotating grooves 111 for placing and rotating the rotor 7. Both ends of the rotor 7 are fitted with first bearings 8. In this embodiment, the first bearings 8 are ball bearings. The outer side wall of the first bearing 8 is in contact with the inner side wall of the rotating groove 111, which can improve the stability of the rotor 7 rotation.

[0044] Reference Figure 2 and Figure 3The enameled wire guide assembly 2 includes a fixed plate 22 and two guide blocks 21 fixed on the base plate 4. The fixed plate 22 has a moving groove 23 through its length along the side wall near the support plate 11 for sliding the two guide blocks 21. The two guide blocks 21 can abut against both ends of the iron core 71 to improve the stability of the rotor 7 when winding the enameled wire 72. Different specifications of enameled wire 72 can be adapted by adjusting the distance between the two guide blocks 21. A passage hole 24 for the enameled wire 72 to pass through is through the center of the moving groove 23.

[0045] The winding assembly 3 includes two opposing mounting plates 31 fixed to the base plate 4. A winding frame 32 is provided on the two mounting plates 31. The top wall of each mounting plate 31 is provided with a mounting groove 311 for placing and rotating the winding frame 32. The winding frame 32 includes a long rod 321, a connecting rod 322, and two crossbars 323. The long rod 321 is placed on the mounting plate 31 and can rotate relative to the mounting plate 31. The connecting rod 322 is connected to the center of the long rod 321, and the two ends of the connecting rod 322 are respectively connected to the two crossbars 323. The two ends of the long rod 321 are fitted with second bearings 9 that cooperate with the mounting grooves 311. In this embodiment, the second bearings 9 are ball bearings, which can improve the stability of the long rod 321 when rotating.

[0046] Reference Figure 4 Both ends of the two crossbars 323 are provided with insertion holes 3231, and all insertion holes 3231 are threaded with fixing bolts 3232. The screw part of the fixing bolts 3232 is fitted with a baffle 3233 to prevent the enameled wire 72 from slipping out of the crossbars 323.

[0047] Reference Figure 2 The winding frame 32 is rotatably connected to a rotating assembly 6 for rotating the winding frame 32. The rotating assembly 6 includes a rocker arm 61 fixedly connected to one end of a long rod 321. The end of the rocker arm 61 not connected to the long rod 321 is rotatably connected to a handle 62. When winding the enameled wire 72, rotating the handle 62 causes the rocker arm 61 to rotate. Compared to directly rotating the long rod 321, this structure increases the lever arm, thereby reducing the force required for operation.

[0048] Reference Figure 5 and Figure 6An adjustment module 5 is provided on the side of the fixing plate 22 near the mounting plate 31. The adjustment module 5 includes a control cable assembly 51 and a transmission assembly 52. ​​The transmission assembly 52 includes a first transmission gear 521 and a second transmission gear 522 disposed on the base plate 4. In this embodiment, both the first transmission gear 521 and the second transmission gear 522 are bevel gears. The first transmission gear 521 and the second transmission gear 522 mesh with each other, and both the first transmission gear 521 and the second transmission gear 522 are mounted on the base plate 4 by a bracket. The control cable assembly 51 includes a sliding plate 511 and a connecting rod 512. The base plate 4 has a sliding groove 41 for sliding the slide plate 511. The connecting rod 512 includes an inner rod 5124 and an outer rod 5123. The slide plate 511 is rotatably connected to one end of the outer rod 5123. The end of the long rod 321 near the rocker arm 61 is rotatably connected to the first transmission gear 521 on the same axis. The side wall of the second gear away from the long rod 321 has four adjustment holes 5221, and the four adjustment holes 5221 are evenly distributed along the axial direction of the long rod 321. A rotating shaft 5222 is rotatably connected inside the adjustment hole 5221, and the rotating shaft 5222 is rotatably connected to the inner rod 5124.

[0049] Reference Figure 7 The inner rod 5124 has a positioning hole 5131 on its side, and a positioning bolt 5132 is threaded into the positioning hole 5131. The outer rod 5123 has a telescopic hole 5121 for sliding of the inner rod 5124 at one end away from the connection with the sliding plate 511. The outer rod 5123 has five control holes 5122 on its side for the positioning bolt 5132 to pass through, and the five control holes 5122 are evenly distributed along the length of the outer rod 5123.

[0050] Reference Figure 5 , Figure 6 and Figure 7 By aligning the positioning hole 5131 on the inner rod 5124 with the corresponding control hole 5122, and then inserting the positioning bolt 5132 into the corresponding control hole 5122, the portion of the positioning bolt 5132 extending out of the control hole 5122 is threaded into the positioning hole 5131. The positioning bolt 5132 needs to be tightened to fix the inner rod 5124 onto the outer rod 5123. This allows adjustment of the straight-line distance between the slide plate 511 and the second transmission gear 522. At the same time, the rotating shaft 5222 is moved into the corresponding adjustment hole 5221 to control the movement distance of the slide plate 511. By correspondingly changing the straight-line distance between the slide plate 511 and the second transmission gear 522 and the movement distance of the slide plate 511, it can be ensured that the slide plate 511 always passes through the middle position of the sliding groove 41 in the length direction, thereby ensuring that the enameled wire 72 is wound on the two crossbars 323.

[0051] Reference Figure 8Both support plates 11 have locking holes 112 on their bottom walls, with locking bolts 13 threaded into the locking holes 112. The top wall of the base plate 4 has a through-hole 14 for the locking bolts 13 to pass through and slide. When the two support plates 11 need to be moved due to different specifications of the disassembled rotors 7, the locking bolts 13 can be loosened to move the support plates 11. When the support plates 11 are moved to the corresponding positions, the locking bolts 13 can be passed through the through-hole 14 and then tightened to fix the support plates 11.

[0052] Reference Figure 9 The guide block 21 has a mounting hole 211 on its side wall that fits against the moving groove 23. The mounting hole 211 is threaded with a mounting bolt 26. The bottom wall of the moving groove 23 has a through hole 25 for the mounting bolt 26 to pass through and slide. When the guide block 21 needs to be moved due to the different specifications of the disassembled rotor 7, the mounting bolt 26 can be loosened to move the guide block to the corresponding position. Then, the mounting bolt 26 is passed through the through hole 25 and screwed into the mounting hole 211. The mounting bolt 26 needs to be tightened to fix the guide block.

[0053] The implementation principle of a manual rotor enameled wire removal fixture according to an embodiment of this application is as follows: First, the first bearings 8 are fitted onto both ends of the rotor 7. Then, the rotor 7 is placed in the rotating groove 111 on the support plate 11. The first bearings 8 and the rotating groove 111 are compatible, which can fix the rotor 7 and improve the stability of the rotor 7 when rotating. Next, the operator passes one end of the enameled wire 72 through the passage hole 24 on the fixing plate 22 and moves the two guide blocks 21 to abut against both ends of the iron core 71. The operator then winds the enameled wire 72 that has passed through the passage hole 24 several times around the two crossbars 323. Then, the operator rotates the handle 62, which drives the rocker arm 61 to rotate. This drives the long rod 321 to rotate, which drives the connecting rod 322 to rotate. The connecting rod 322 drives the two crossbars 323 to rotate. The enameled wire 72 wound around the two crossbars 323 can then drive the enameled wire on the rotor 7 to be wound around the two crossbars 323, thus achieving the removal and collection of the enameled wire 72. Compared to the method of manually disassembling enameled wire 72 in related technologies, this application is more time-saving and can improve work efficiency.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A manual unwinding tool for enameled wire, characterized by: The application relates to a product positioning assembly (1), a coil wire guiding assembly (2) for guiding rotor enameled wires and a coil wire assembly (3) arranged on a bottom plate (4) in sequence; the product positioning assembly (1) comprises a plurality of supporting plates (11) arranged on the bottom plate (4), the top walls of the supporting plates (11) are provided with rotating grooves (111) for placing and rotating rotors (7); the coil wire assembly (3) comprises a plurality of mounting plates (31) arranged on the bottom plate (4), the mounting plates (31) are provided with mounting grooves (311) for placing and rotating coil wire racks (32) between the mounting plates (31), and the coil wire rack (32) is connected with a rotating assembly (6) for rotating the coil wire rack (32); the coil wire rack (32) comprises a long rod (321), a connecting rod (322) and a cross rod (323); the long rod (321) is rotationally connected with the mounting plate (31), the connecting rod (322) is connected with the long rod (321), and the cross rod (323) is connected with one end of the connecting rod (322); the rotating assembly (6) comprises a rocker arm (61) and a handle (62), one end of the rocker arm (61) is fixedly connected with one end of the long rod (321), and the other end of the rocker arm (61) is connected with the handle (62); the coil wire guiding assembly (2) comprises a guiding block (21) and a fixing plate (22) arranged on the bottom plate (4), the fixing plate (22) is provided with a moving groove (23) for sliding the guiding block (21) on the side wall close to the product positioning assembly (1), and the fixing plate (22) is provided with a passing hole (24) for the enameled wire (72) to pass through on the side wall close to the product positioning assembly (1); the fixing plate (22) is provided with an adjusting module (5) on the side close to the mounting plate (31), the adjusting module (5) comprises a wire control assembly (51) and a transmission assembly (52); the transmission assembly (52) comprises a first transmission gear (521) and a second transmission gear (522), the second transmission gear (522) is engaged with the first transmission gear (521), the wire control assembly (51) comprises a sliding plate (511) and a connecting rod (512); the bottom plate (4) is provided with a sliding groove (41) for sliding the sliding plate (511), the sliding plate (511) is provided with a direction changing hole (5111) for the enameled wire (72) to pass through; and the sliding plate (511) is rotationally connected with one end of the connecting rod (512). The connecting rod (512) comprises an outer rod (5123) and an inner rod (5124), the second transmission gear (522) is provided with a plurality of adjusting holes (5221) for adjusting the movement distance of the sliding plate (511) away from the side wall of the long rod (321), and the adjusting holes (5221) are uniformly distributed along the length direction of the long rod (321); a rotating shaft (5222) is rotatably connected in the adjusting hole (5221), the rotating shaft (5222) is rotatably connected with the inner rod (5124), a positioning hole (5131) is formed in the side surface of the inner rod (5124), and the positioning hole (5131) is threadedly connected with a positioning bolt (5132); a telescopic hole (5121) for sliding of the inner rod (5124) is formed in the outer rod (5123) away from one end connected with the sliding plate (511), a plurality of distance control holes (5122) for the positioning bolt (5132) to pass through are formed in the side surface of the outer rod (5123), and the distance control holes (5122) are uniformly distributed along the length direction of the outer rod (5123).

2. The manual enameled wire unwinding tool according to claim 1, characterized in that: The product positioning assembly (1) further comprises a positioning sliding rail (12), the positioning sliding rail (12) is fixedly connected with the bottom plate (4), and the plurality of support plates (11) are slidably connected with the positioning sliding rail (12).

3. The manual enameled wire unwinding tool according to claim 2, characterized in that: A locking hole (112) is formed in the bottom wall of the support plate (11), the locking hole (112) is threadedly connected with a locking bolt (13), and a fixed long hole (14) for the locking bolt (13) to pass through and slide is formed in the top wall of the bottom plate (4).

4. The manual enameled wire unwinding tool according to claim 1, characterized in that: The guide block (21) is provided with a mounting hole (211), and the mounting hole (211) is threadedly connected with a mounting bolt (26); and the moving groove (23) is provided with a through long hole (25) for the mounting bolt (26) to pass through and slide.

5. The manual enameled wire unwinding tool according to claim 1, characterized in that: The two ends of the cross rod (323) are respectively provided with insertion holes (3231), the insertion holes (3231) are threadedly connected with fixing bolts (3232), and the shank portions of the fixing bolts (3232) are sleeved with flaps (3233) for preventing the enameled wires (72) from sliding out of the cross rod (323).

Citation Information

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