CN-121984293-A - Hairpin bending mechanism

Abstract

The invention relates to a hairpin bending mechanism which comprises a wire feeding die and a broken line assembly, wherein the broken line assembly comprises a rotating plate, a bending part eccentrically arranged on the rotating plate, a first driving part used for driving the rotating plate to rotate around the axis of the rotating plate, and a second driving part used for driving the rotating plate to move along the height direction. When needing to bend from the copper line opposite side, the second drive portion drive rotor plate drives the portion of bending and breaks away from the copper line in the direction of height motion, then under the rotation effect of rotor plate, the portion of bending moves to the opposite side of copper line, and the second drive portion drive rotor plate drives the portion of bending and moves in the axis direction and reset to can bend the copper line from the opposite side. The double-side bending of the copper wire can be realized only through one bending part, a fixed installation space is not required to be reserved at two sides of the copper wire, the bending angle and the span are only determined by the motion trail of the bending part, the flexible adjustment can be realized through a program, and the limitation of the bending angle and the span caused by multiple bending parts is overcome.

Inventors

• WENG YANG
• WANG BAOGUO
• KONG LINGCHAO
• Sun Maopu
• LI DI
• QI WANQIU
• Xin Yuetao
• ZHANG ZHAOQIANG
• YE YANG
• WANG LEI
• LIANG JINGHUI
• GONG YU
• Liang Xuzhe

Assignees

• 北京海纳川汽车部件股份有限公司

Dates

Publication Date

20260505

Application Date

20260109

Claims (12)

1. 1. The utility model provides a hairpin mechanism of bending, its characterized in that, including being used for providing the line mould of sending out of copper line that waits to bend and being used for receiving the copper line and with the broken line assembly that the copper line was bent, the broken line assembly includes: A rotating plate; A bending part eccentrically mounted to the rotating plate; A first driving part for driving the rotating plate to rotate around the axis of the rotating plate, and And the second driving part is used for driving the rotating plate to move along the height direction.
2. 2. The card dispensing and bending mechanism of claim 1, wherein the second drive section comprises: A jacking member; A connecting rod with one end connected to the lifting member, and The connector is fixed at the bottom of the rotating plate, and the other end of the connecting rod is rotatably connected with the connector.
3. 3. The card dispensing and bending mechanism of claim 2, wherein the first drive section comprises: A motor; The first gear is connected with an output shaft of the motor; A second gear engaged with the first gear, the second gear being coaxially arranged with the rotating plate; A guide structure for guiding along the height direction and eccentrically arranged on the second gear, and One end of the guide shaft extends into the guide structure, the other end of the guide shaft is eccentrically connected with the rotating plate, When the rotating plate moves along the height direction, one end, far away from the rotating plate, of the guide shaft is always located in the guide structure.
4. 4. A hairpin bending mechanism according to claim 3 wherein the guide structure comprises a first through bore opening into the second gear and a guide bearing disposed within the first through bore.
5. 5. The hairpin bending mechanism of claim 3, wherein the jacking member is coaxially disposed on a side of the second gear facing away from the rotating plate, the second gear being provided with a second through hole through which the connecting rod passes to allow the second gear to rotate relative to the connecting rod.
6. 6. The hairpin bending mechanism of claim 5, further comprising a bearing housing disposed between the jacking member and the second gear, a support bearing disposed within the bearing housing, the second gear mounted to the support bearing, The middle of the bearing seat is provided with a third through hole which penetrates through, and the connecting rod penetrates through the third through hole.
7. 7. The hairpin bending mechanism of claim 3, further comprising a first mounting plate and a second mounting plate that are angled with respect to each other, the motor and the jacking member being disposed on a lower side of the first mounting plate, the first gear and the second gear being disposed on an upper side of the first mounting plate, the rotating plate being disposed on an upper side of the second gear, the second mounting plate being disposed on an upper side of the first mounting plate, the wire feeding die being mounted on a side of the second mounting plate remote from the first mounting plate.
8. 8. The hairpin bending mechanism of claim 1 wherein the wire feed die has a wire chase for routing the copper wire, the hairpin bending mechanism further comprising a carrier plate for carrying the copper wire, an upper surface of the carrier plate being flush with a bottom of the wire chase to receive the copper wire from the wire chase.
9. 9. The card dispensing and bending mechanism of claim 8, wherein the rotating plate is located at a lower side of the bearing plate, and the bearing plate is provided with an arc hole for the bending portion to extend from the rotating plate to an upper side of the bearing plate and rotate in the arc hole along with the rotating plate.
10. 10. The hairpin bending mechanism of any one of claims 1-9 wherein the bending portion comprises: Bending wheel, and One end of the rotating shaft is connected with the rotating plate, the bending wheel is rotatably arranged at the other end of the rotating shaft, The outer contour of the bending wheel projected along the axial direction is formed by a plurality of straight line segments and a plurality of arc segments in sequence in an alternating mode.
11. 11. The hairpin bending mechanism of claim 10 wherein the bending portion further comprises a mount fixed to the rotating plate, an end of the rotating shaft remote from the bending wheel being connected to the mount.
12. 12. The hairpin bending mechanism of claim 10 wherein the bending portion further comprises a swivel bearing sleeved on the swivel shaft, the bending wheel being sleeved on the swivel bearing.

Description

Hairpin bending mechanism Technical Field The disclosure relates to the technical field of motor stator flat wire forming, in particular to a hairpin bending mechanism. Background In the field of bending and forming of a flat wire motor stator hairpin, a scheme of arranging a plurality of independent bending parts on two sides of a flat wire is mainly adopted in related technologies. Such a structure accomplishes the U-bend by the cooperation of two or more bending structures in fixed positions. However, in this manner, the dimensions, number, and mounting spacing of the bending structures themselves are relatively fixed in mechanical layout, directly limiting the bending angle and span size range of the formable U-shaped hairpin. Disclosure of Invention It is an object of the present disclosure to provide a hairpin bending mechanism to at least partially solve the problems in the related art. To achieve the above object, the present disclosure provides a hairpin bending mechanism including a wire feeding die for providing a copper wire to be bent and a fold line assembly for receiving the copper wire and bending the copper wire, the fold line assembly including: A rotating plate; A bending part eccentrically mounted to the rotating plate; A first driving part for driving the rotating plate to rotate around the axis of the rotating plate, and And the second driving part is used for driving the rotating plate to move along the height direction. According to some possible embodiments, the second driving part includes: A jacking member; A connecting rod with one end connected to the lifting member, and The connector is fixed at the bottom of the rotating plate, and the other end of the connecting rod is rotatably connected with the connector. According to some possible embodiments, the first driving part includes: A motor; The first gear is connected with an output shaft of the motor; A second gear engaged with the first gear, the second gear being coaxially arranged with the rotating plate; A guide structure for guiding along the height direction and eccentrically arranged on the second gear, and One end of the guide shaft extends into the guide structure, the other end of the guide shaft is eccentrically connected with the rotating plate, When the rotating plate moves along the height direction, one end, far away from the rotating plate, of the guide shaft is always located in the guide structure. According to some possible embodiments, the guiding structure comprises a first through hole opening in the second gear and a guiding bearing arranged in the first through hole. According to some possible embodiments, the jacking piece is coaxially arranged on one side of the second gear, which is away from the rotating plate, and the second gear is provided with a second through hole for the connecting rod to pass through so as to allow the second gear to rotate relative to the connecting rod. According to some possible embodiments, the device further comprises a bearing seat arranged between the jacking piece and the second gear, wherein a support bearing is arranged in the bearing seat, the second gear is installed on the support bearing, The middle of the bearing seat is provided with a third through hole which penetrates through, and the connecting rod penetrates through the third through hole. According to some possible embodiments, the wire feeding die further comprises a first mounting plate and a second mounting plate which are angled with each other, the motor and the jacking piece are arranged on the lower side of the first mounting plate, the first gear and the second gear are arranged on the upper side of the first mounting plate, the rotating plate is arranged on the upper side of the second gear, the second mounting plate is arranged on the second side of the first mounting plate, and the wire feeding die is arranged on one side, far away from the first mounting plate, of the second mounting plate. According to some possible embodiments, the wire feeding die has a wire slot for the copper wire to be routed, the hairpin bending mechanism further comprises a bearing plate for bearing the copper wire, and an upper surface of the bearing plate is level with a bottom of the wire slot to receive the copper wire from the wire slot. According to some possible embodiments, the rotating plate is located at the lower side of the bearing plate, and the bearing plate is provided with an arc hole, so that the bending part extends from the rotating plate to the upper side of the bearing plate and can rotate along with the rotating plate in the arc hole. According to some possible embodiments, the bending portion comprises: Bending wheel, and One end of the rotating shaft is connected with the rotating plate, the bending wheel is rotatably arranged at the other end of the rotating shaft, The outer contour of the bending wheel projected along the axial direction is formed by a plurality of straight line segments and