A bending tool for a flat wire motor

Abstract

The application relates to a bending tool for a flat wire motor and belongs to the field of flat copper wire forming technology. The tool comprises a mounting base, a shaping mechanism slidably mounted on the mounting base, a limiting extrusion mechanism mounted on the mounting base and arranged opposite to the shaping mechanism, a stamping mechanism mounted on the mounting base and located above the limiting extrusion mechanism, and a conveying mechanism for conveying the flat copper wire. The limiting extrusion mechanism comprises a limiting frame, rotating extrusion arms rotatably connected to the opening ends on the two sides of the limiting frame, and a driving assembly for driving the two groups of rotating extrusion arms to rotate and extruding the flat copper wire. The application has the effect of effectively reducing the damage of the flat copper wire in the bending process.

Description

Technical Field

[0001] This utility model relates to the field of flat copper wire forming technology, and in particular to a bending fixture for a flat wire motor. Background Technology

[0002] Flat-wire motors are an advanced motor technology that uses rectangular cross-section copper wire windings. With their higher slot fill factor, they achieve a comprehensive performance improvement over traditional round-wire motors. They offer significant advantages such as high efficiency, high power density, superior heat dissipation, and lower electromagnetic noise, effectively improving the driving range, power output, and reliability of electric vehicles. Therefore, they have become the mainstream technology choice for drive motors in high-end electric vehicles.

[0003] In the field of flat wire motor winding manufacturing, specific technical means are commonly used to achieve the bending of flat copper wire. Among related technologies, Chinese Patent Publication No. CN222607846U discloses a bending fixture for flat wire motors. This bending fixture is based on a structure of fixed limiting frame and linear stamping. It uses a shaping seat to drive the flat copper wire, forcibly pushing it into the limiting frame, thereby achieving the basic bending function.

[0004] Regarding the aforementioned technologies, when flat copper wires are forcibly pushed into the limiting frame under the drive of the shaping seat, their surfaces will experience severe friction with the edge of the frame, which can easily scratch the insulating varnish film on the surface of the copper wires, thereby affecting the performance and quality of the flat wire motor. Utility Model Content

[0005] In order to effectively reduce the damage to flat copper wire during the bending process, this application provides a bending fixture for a flat wire motor.

[0006] This application provides a bending fixture for a flat wire motor, which adopts the following technical solution: A bending fixture for a flat wire motor includes a mounting base, a shaping mechanism slidably mounted on the mounting base, a limiting and pressing mechanism mounted on the mounting base and arranged opposite to the shaping mechanism, a stamping mechanism mounted on the mounting base and located above the limiting and pressing mechanism, and a conveying mechanism for conveying flat copper wire. The limiting and pressing mechanism includes a limiting frame, rotating pressing arms rotatably hinged to the open ends on both sides of the limiting frame, and a driving assembly for driving the two sets of rotating pressing arms to rotate relative to each other and for pressing flat copper wire into shape.

[0007] By adopting the above technical solution, two sets of rotating extrusion arms are rotatably hinged at the open ends on both sides of the limiting frame. Under the action of the driving component, the two sets of rotating extrusion arms can simultaneously extrude flat copper wires from both sides to bend and form them, avoiding the flat copper wires being forcibly pushed into the limiting frame and violently rubbing against the edge of the frame, thereby reducing the damage to the flat copper wires during the bending process.

[0008] Optionally, the drive assembly includes a first gear mounted on the bottom of the hinge shaft of one of the rotating extrusion arms and located within the mounting base, a second gear mounted on the bottom of the hinge shaft of the other rotating extrusion arm and meshing with the first gear, and a drive motor for driving the first gear to rotate.

[0009] By adopting the above technical solution, the driving component of the limiting extrusion mechanism adopts a structure of a first gear, a second gear and a drive motor. The drive motor drives the first gear to rotate. Because the second gear meshes with the first gear, the two rotating extrusion arms can rotate relative to each other and extrude flat copper wire into shape, effectively reducing the damage to the flat copper wire during the bending process.

[0010] Optionally, the drive assembly includes a drive cylinder installed in the mounting base and a V-shaped connecting rod rotatably hinged in the mounting base. The output end of the drive cylinder is fixedly connected to the drive hinge shaft of the V-shaped connecting rod. Rotary hinge shafts are installed at the two branch ends of the V-shaped connecting rod and are respectively hinged to the bottom of the two rotary extrusion arms. The mounting base is provided with sliding grooves for limiting the sliding of the corresponding rotary hinge shafts.

[0011] By adopting the above technical solution, when the piston rod of the drive cylinder drives the drive hinge shaft of the V-shaped connecting rod to reciprocate, the rotating hinge shaft at the end of the V-shaped connecting rod slides in its corresponding sliding groove to limit the movement, so as to drive the two rotating extrusion arms that are hinged to rotate synchronously relative to each other, thereby realizing the extrusion forming of flat copper wire and reducing the damage to flat copper wire during the bending process.

[0012] Optionally, the drive assembly includes a first drive motor mounted on the bottom of the hinge shaft of one of the rotary extrusion arms and located within the mounting base, and a second drive motor mounted on the bottom of the hinge shaft of the other rotary extrusion arm and located within the mounting base.

[0013] By adopting the above technical solution, the driving components of the limiting extrusion mechanism are a first drive motor and a second drive motor respectively installed at the bottom of the hinge shaft of the two rotating extrusion arms. They can independently and simultaneously drive the rotating extrusion arms to rotate and extrude flat copper wires to form, avoiding the flat copper wires being forcibly pushed into the limiting frame and reducing the damage to the flat copper wires during the bending process.

[0014] Optionally, the shaping mechanism includes a sliding seat, a shaping block detachably mounted on the top of the sliding seat, and a shaping drive component that drives the sliding seat to slide toward the limiting frame. The outer end face of the shaping block is provided with a forming groove for forming flat copper wire.

[0015] The specific structure of the shaping mechanism is disclosed by adopting the above technical solution. The detachable shaping block is easy to replace to adapt to the bending requirements of flat copper wires of different specifications. The forming groove provides forming space for the flat copper wire, enabling the flat copper wire to be bent as required. The sliding seat slides towards the limiting frame under the drive of the shaping drive component, which can push the flat copper wire to complete the bending operation.

[0016] Optionally, the bottom of the shaping block is provided with two sets of guide sliders along the length direction, and the sliding seat is provided with guide grooves for the guide sliders to slide.

[0017] By adopting the above technical solution, the cooperation between the guide slider and the guide groove allows the shaping block to slide along the length direction on the sliding seat, which facilitates the quick installation and disassembly of the shaping block and makes it convenient to replace the appropriate shaping block according to different flat copper wire bending requirements.

[0018] Optionally, the guide slider has plunger holes on both ends and ball spring plungers are installed in the plunger holes. The sliding seat has a locking groove on the inner end face of the guide groove for the plunger balls of the ball spring plunger to engage.

[0019] By adopting the above technical solution, the ball-head spring plunger and the snap-fit ​​groove on the guide slider can be used to accurately install the shaping block on the sliding seat, improving the stability of the installation. It also facilitates the quick disassembly and replacement of the shaping block to adapt to different bending requirements.

[0020] Optionally, the inner walls of both the limiting frame and the rotating extrusion arm are fitted with flexible linings.

[0021] By adopting the above technical solution, a first flexible liner is embedded in the inner wall of the limiting frame and the rotating extrusion arm, which can reduce the friction between the flat copper wire and the inner wall of the limiting frame and the rotating extrusion arm during the bending process, effectively avoid scratching the insulating varnish film on the surface of the copper wire, thereby improving the performance and quality of the flat wire motor.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A bending fixture for a flat wire motor, the limiting and extruding mechanism comprising a limiting frame, rotating extruding arms rotatably hinged to both sides of the opening end of the limiting frame, and a driving assembly for driving the rotating extruding arms to rotate and for extruding flat copper wire into shape; by rotatably hinged to the opening ends of both sides of the limiting frame, and the two sets of rotating extruding arms being able to simultaneously extrude flat copper wire from both sides and bend it into shape under the action of the driving assembly, the flat copper wire is prevented from being forcibly pushed into the limiting frame and violently rubbed against the edge of the frame, thereby reducing the damage to the flat copper wire during the bending process; 2. The guide slider and guide groove work together to allow the shaping block to slide along the length direction on the sliding seat, which facilitates the quick installation and removal of the shaping block and also makes it easy to replace the appropriate shaping block according to different flat copper wire bending requirements; 3. By embedding a flexible liner on the inner wall of the limiting frame and the rotating extrusion arm, friction with the flat copper wire is further reduced, and scratches on the insulating varnish film on the surface of the flat copper wire are reduced. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a bending fixture for a flat wire motor in an embodiment of this application.

[0024] Figure 2 This is a partial structural schematic diagram of a bending fixture for a flat wire motor according to an embodiment of this application.

[0025] Figure 3 This is a cross-sectional schematic diagram of the driving component in Embodiment 1 of this application.

[0026] Figure 4 This is a cross-sectional schematic diagram of the guide slider and guide sliding fit in the embodiments of this application.

[0027] Figure 5 This is a cross-sectional schematic diagram of the stamping mechanism in the embodiments of this application.

[0028] Figure 6 This is a cross-sectional schematic diagram of the driving component in Embodiment 2 of this application.

[0029] Figure 7 This is a cross-sectional schematic diagram of the driving component in Embodiment 3 of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. Sliding groove; 2. Shaping mechanism; 21. Sliding seat; 211. Guide groove; 212. Snap-fit ​​groove; 22. Shaping block; 221. Forming groove; 222. Guide slider; 2221. Plunger hole; 22211. Ball spring plunger; 23. Shaping drive component; 3. Limiting extrusion mechanism; 31. Limiting frame; 32. Rotating extrusion arm; 321. Hinge shaft; 33. Drive assembly; 331. First gear; 332. Second gear; 333. Gear; 334. Drive motor; 335. Drive cylinder; 336. V-shaped connecting rod; 3351. Drive hinge shaft; 3352. Rotary hinge shaft; 337. First drive motor; 34. Second drive motor; 4. Flexible liner; 4. Stamping mechanism; 41. Stamping bracket; 42. Stamping cylinder; 43. Stamping seat; 5. Conveying mechanism; 51. Conveying seat; 52. Conveying assembly; 53. Cutting unit; 54. Distance measuring unit; 55. Roller; 56. Conveying gap. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0032] Example 1 This application discloses a bending fixture for a flat wire motor. (Refer to...) Figure 1 A bending fixture for a flat wire motor includes a mounting base 1, a shaping mechanism 2 slidably mounted on the mounting base 1, a limiting and pressing mechanism 3 mounted on the mounting base 1 and arranged opposite to the shaping mechanism 2, a stamping mechanism 4 mounted on the mounting base 1 and located above the limiting and pressing mechanism 3, and a conveying mechanism 5 for conveying flat copper wire.

[0033] Reference Figure 2 and Figure 3 The limiting extrusion mechanism 3 includes a limiting frame 31, rotating extrusion arms 32 rotatably hinged to the open ends on both sides of the limiting frame 31, and a drive assembly 33 for driving the two sets of rotating extrusion arms 32 to rotate relative to each other and for extruding flat copper wires into shape. The rotating extrusion arms 32 are rotatably hinged to both sides of the open ends of the limiting frame 31 via hinge shafts 321.

[0034] Reference Figure 3 The drive assembly 33 includes a first gear 331 mounted on the bottom of the hinge shaft 321 of one rotary extrusion arm 32 and located within the mounting base 1, a second gear 332 mounted on the bottom of the hinge shaft 321 of another rotary extrusion arm 32 and meshing with the first gear 331, and a drive motor 333 that drives the first gear 331 to rotate. The rotary extrusion arm 32 is fixedly connected to the rotation shaft, the limiting frame 31 is rotatably connected to the hinge shaft 321, and the output end of the drive motor 333 is fixedly connected to the first gear 331. By using the drive motor 333 to drive the first gear 331 to rotate, the first gear 331 drives the meshing second gear 332 to rotate, thereby causing the two rotary extrusion arms 32 to rotate synchronously to extrude flat copper wire into shape, achieving effective bending of the flat copper wire.

[0035] Reference Figure 1 The shaping mechanism 2 includes a sliding seat 21, a shaping block 22 detachably mounted on the top of the sliding seat 21, and a shaping drive component 23 for driving the sliding seat 21 to slide towards the limiting frame 31. The outer end face of the shaping block 22 has a forming groove 221 for forming flat copper wire. In this embodiment, the shaping drive component 23 is a cylinder horizontally mounted on the mounting base 1, and the piston rod end of the cylinder is fixedly connected to the sliding seat 21.

[0036] Reference Figure 4 The bottom of the shaping block 22 has two sets of guide sliders 222 along its length, and the sliding seat has guide grooves 211 for the guide sliders 222 to slide. The cooperation between the guide sliders 222 and the guide grooves 211 allows the shaping block 22 to slide along its length on the sliding seat, which facilitates the quick installation and removal of the shaping block 22, and also makes it easy to replace the appropriate shaping block 22 according to different flat copper wire bending requirements.

[0037] Reference Figure 4The guide slider 222 has plunger holes 2221 on both end faces, and ball spring plungers 22211 are installed in the plunger holes 2221. The sliding seat has a locking groove 212 on the inner end face of the guide groove 211 for the plunger balls of the ball spring plungers 22211 to engage. By utilizing the engaging fit between the ball spring plungers 22211 and the locking groove 212 on the guide slider 222, the shaping block 22 can be accurately installed on the sliding seat 21, improving the stability of the installation.

[0038] Reference Figure 2 The inner walls of the limiting frame 31 and the rotating extrusion arm 32 are both fitted with flexible linings 34.

[0039] Reference Figure 5 The stamping mechanism 4 includes a stamping bracket 41, a stamping cylinder 42 mounted on the stamping bracket 41, and a stamping seat 43 connected to the output end of the stamping cylinder 42. The stamping cylinder 42 mounted on the stamping bracket 41 can drive the stamping seat 43 to apply vertical stamping to the flat copper wire in the vertical direction, thereby achieving the final bending and shaping of the flat copper wire.

[0040] Reference Figure 2 The conveying mechanism 5 includes two sets of conveying seats 51 installed on both sides of the rotating extrusion arm 32, a conveying assembly 52 installed on the top of the conveying seat 51, an upper cutting unit 53 installed on one conveying seat 51, and a distance measuring unit 54 installed on the other conveying seat 51; the conveying assembly 52 includes two rows of oppositely arranged rollers 55 installed on the top of the conveying seat 51, and there is a conveying gap 56 between the two rows of oppositely arranged rollers 55 for conveying flat copper wire.

[0041] The implementation principle of a bending fixture for a flat wire motor according to an embodiment of this application is as follows: In the initial state, the shaping mechanism 2 and the limiting extrusion mechanism 3 are separated from each other. During processing, the flat copper wire is first placed on the conveying mechanism 5; then, the shaping mechanism 2 pushes the flat copper wire toward the limiting extrusion mechanism 3, causing it to be extruded and deformed. At the same time, the rotating extrusion arm 32 in the limiting extrusion mechanism 3 is driven by the drive assembly 33 to simultaneously extrude the flat copper wire from both sides, completing the horizontal bending and forming; finally, the stamping mechanism 4 applies vertical stamping to the flat copper wire that has been formed in the horizontal direction, realizing the final bending and shaping of the flat copper wire.

[0042] Example 2 Compared with Embodiment 1, this embodiment is identical in structure to the bending fixture of a flat wire motor in Embodiment 1, except for the structure of the drive component 33.

[0043] Reference Figure 2 and Figure 6The drive assembly 33 includes a drive cylinder 334 installed in the mounting base 1 and a V-shaped connecting rod 335 rotatably hinged in the mounting base 1. The output end of the drive cylinder 334 is fixedly connected to the drive hinge shaft 3351 of the V-shaped connecting rod 335. Rotary hinge shafts 3352 are installed at the two branch ends of the V-shaped connecting rod 335 and are respectively hinged to the bottom of the two rotating extrusion arms 32. The mounting base 1 is provided with a sliding groove 11 for limiting the sliding of the corresponding rotating hinge shaft 3352, and the rotating extrusion arms 32 are fixedly connected to the hinge shaft 321. The limiting frame 31 is rotatably connected to the hinge shaft 321.

[0044] Reference Figure 2 and Figure 6 When the piston rod of the drive cylinder 334 drives the drive hinge shaft 3351 of the V-shaped connecting rod 335 to reciprocate, the rotating hinge shaft 3352 at the end of the V-shaped connecting rod 335 slides in its corresponding sliding groove 11 to limit the movement, so as to drive the two rotating extrusion arms 32 connected to it to rotate synchronously relative to each other, thereby realizing the extrusion forming of flat copper wire and reducing the damage of flat copper wire during bending.

[0045] Example 3 Compared with Embodiment 1, this embodiment is identical in structure to the bending fixture of a flat wire motor in Embodiment 1, except for the structure of the drive component 33.

[0046] Reference Figure 7 The drive assembly 33 includes a first drive motor 336 mounted on the bottom of the hinge shaft 321 of one rotary extrusion arm 32 and located within the mounting base 1, and a second drive motor 337 mounted on the bottom of the hinge shaft 321 of another rotary extrusion arm 32 and located within the mounting base 1. The rotary extrusion arm 32 is fixedly connected to the hinge shaft 321, and the limiting frame 31 is rotatably connected to the hinge shaft 321. The output end of the first drive motor 336 is fixedly connected to the hinge shaft 321 of one rotary extrusion arm 32, and the output end of the second drive motor 337 is fixedly connected to the hinge shaft 321 of the other rotary extrusion arm 32. By using the first drive motor 336 and the second drive motor 337 to drive the two rotary extrusion arms 32 to rotate synchronously relative to each other, flat copper wire can be effectively extruded and bent into shape.

[0047] 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 bending fixture for a flat wire motor, comprising a mounting base (1), a shaping mechanism (2) slidably mounted on the mounting base (1), a limiting and pressing mechanism (3) mounted on the mounting base (1) and arranged opposite to the shaping mechanism (2), a stamping mechanism (4) mounted on the mounting base (1) and located above the limiting and pressing mechanism (3), and a conveying mechanism (5) for conveying flat copper wire, characterized in that, The limiting extrusion mechanism (3) includes a limiting frame (31), rotating extrusion arms (32) rotatably hinged to the open ends on both sides of the limiting frame (31), and a drive assembly (33) for driving the two sets of rotating extrusion arms (32) to rotate relative to each other and for extruding flat copper wires into shape.

2. The bending fixture for a flat wire motor according to claim 1, characterized in that, The drive assembly (33) includes a first gear (331) mounted on the bottom of the hinge shaft (321) of one of the rotary extrusion arms (32) and located in the mounting base (1), a second gear (332) mounted on the bottom of the hinge shaft (321) of the other rotary extrusion arm (32) and meshing with the first gear (331), and a drive motor (333) that drives the first gear (331) to rotate.

3. The bending fixture for a flat wire motor according to claim 1, characterized in that, The drive assembly (33) includes a drive cylinder (334) installed in the mounting base (1) and a V-shaped connecting rod (335) rotatably hinged in the mounting base (1). The output end of the drive cylinder (334) is fixedly connected to the drive hinge shaft (3351) of the V-shaped connecting rod (335). Rotary hinge shafts (3352) are installed at the two branch ends of the V-shaped connecting rod (335) and are respectively hinged to the bottom of the two rotary extrusion arms (32). The mounting base (1) is provided with a sliding groove (11) for limiting the sliding of the corresponding rotary hinge shaft (3352).

4. The bending fixture for a flat wire motor according to claim 1, characterized in that, The drive assembly (33) includes a first drive motor (336) mounted on the bottom of the hinge shaft (321) of one of the rotary extrusion arms (32) and located in the mounting base (1) and a second drive motor (337) mounted on the bottom of the hinge shaft (321) of the other rotary extrusion arm (32) and located in the mounting base (1).

5. The bending fixture for a flat wire motor according to claim 1, characterized in that, The shaping mechanism (2) includes a sliding seat (21), a shaping block (22) detachably mounted on the top of the sliding seat (21), and a shaping drive (23) that drives the sliding seat (21) to slide toward the limiting frame (31). The outer end face of the shaping block (22) is provided with a forming groove (221) for forming flat copper wire.

6. The bending fixture for a flat wire motor according to claim 5, characterized in that, The bottom of the shaping block (22) is provided with two sets of guide sliders (222) along the length direction, and the sliding seat is provided with guide grooves (211) for the guide sliders (222) to slide.

7. The bending fixture for a flat wire motor according to claim 6, characterized in that, The guide slider (222) has plunger holes (2221) on both sides and ball spring plungers (22211) are installed in the plunger holes (2221). The sliding seat has a snap-fit ​​groove (212) on the inner side of the guide groove (211) for the plunger balls of the ball spring plunger (22211) to snap into.

8. The bending fixture for a flat wire motor according to claim 1, characterized in that, The inner walls of the limiting frame (31) and the rotating extrusion arm (32) are both fitted with flexible linings (34).

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