CN-224209388-U - Flat wire stator welding fixture

CN224209388UCN 224209388 UCN224209388 UCN 224209388UCN-224209388-U

Abstract

The utility model provides a flat wire stator welding fixture, and relates to the technical field of vehicle part machining. The flat wire stator welding fixture comprises a first clamping jaw and a second clamping jaw which are sequentially arranged along a second direction and are connected with each other in a mutually movable mode along the first direction, the first clamping jaw and the second clamping jaw are respectively provided with a through hole for inserting a copper wire exposed straight-line section of the flat wire stator, the penetrating direction of the through holes is parallel to the second direction, the extending direction of the through holes is parallel to the first direction, the first clamping jaw and the second clamping jaw are used for relatively moving to clamp the copper wire exposed straight-line section penetrating the through holes together, and the first direction is perpendicular to the second direction. The clamping and positioning precision of each group of copper wire exposed straight line segments in the first direction is improved, and the fact that each group of copper wire exposed straight line segments have no gap in the first direction is guaranteed, so that welding quality, welding yield and welding spot drawing force are improved, and an enameled wire which is not stripped on each copper wire exposed straight line segment is not ablated during welding.

Inventors

WU YUNHE
HU JIAN
WANG XU
CHEN CHANGFEI
XU ZUOWEN

Assignees

浙江极氪智能科技有限公司
威睿电动汽车技术(宁波)有限公司
浙江吉利控股集团有限公司

Dates

Publication Date: 20260508
Application Date: 20250605

Claims (10)

1. The flat wire stator welding clamp is characterized by comprising a first clamping jaw (1) and a second clamping jaw (2), wherein the first clamping jaw (1) and the second clamping jaw (2) are sequentially arranged along a second direction and are connected with each other in a mutually movable mode along a first direction, a through hole (3) for inserting a copper wire exposed straight line section (42) of a flat wire stator is formed in each of the first clamping jaw (1) and the second clamping jaw (2), the penetrating direction of the through hole (3) is parallel to the second direction, the extending direction of the through hole (3) is parallel to the first direction, the first clamping jaw (1) and the second clamping jaw (2) are used for relatively moving so as to jointly clamp the copper wire exposed straight line section (42) penetrating through the through hole (3), and the first direction is perpendicular to the second direction.
2. The flat wire stator welding fixture according to claim 1, characterized in that the first clamping jaw (1) and the second clamping jaw (2) each comprise a first end extending along the same end of the first direction, the first end of the first clamping jaw (1) being adapted to move in the first direction towards a first end close to the second clamping jaw (2) for clamping together with the first end of the second clamping jaw (2) a set of the copper wire exposed straight line segments (42) extending only through the through opening (3) of the second clamping jaw (2).
3. The flat wire stator welding fixture according to claim 2, characterized in that a positioning protrusion (21) is arranged on the side surface of the second clamping jaw (2) facing the first clamping jaw (1), the positioning protrusion (21) is located at the first end of the second clamping jaw (2), and when the first end of the first clamping jaw (1) moves against the positioning protrusion (21) relative to the second clamping jaw (2), the first end of the first clamping jaw (1) and the first end of the second clamping jaw (2) together clamp and fix a group of copper wire exposed straight line segments (42) which only penetrate through a through hole (3) of the second clamping jaw (2).
4. The flat wire stator welding fixture according to claim 2, characterized in that the first end of the first clamping jaw (1) is provided with a first protruding block (11) in a protruding manner, the first protruding block (11) is inserted into the through opening (3) of the second clamping jaw (2), and the first protruding block (11) is used for moving along the through opening (3) of the second clamping jaw (2).
5. The flat wire stator welding fixture according to claim 2, further comprising a total power telescopic member (5) and a first power telescopic member, wherein the total power telescopic member (5) is in driving connection with the second clamping jaw (2), the total power telescopic member (5) is in driving connection with the first clamping jaw (1) through the first power telescopic member, and the telescopic directions of the total power telescopic member (5) and the first power telescopic member are parallel to the first direction.
6. The flat wire stator welding fixture according to any one of claims 2-5, further comprising two third clamping jaws (7) and two second power telescopic members (8) symmetrically arranged with respect to the extending direction of the through hole (3), respectively, wherein the two second power telescopic members (8) are fixed relative to the second clamping jaws (2), respectively, and the two second power telescopic members (8) are in driving connection with the third clamping jaws (7) on the corresponding sides, respectively, and the two second power telescopic members (8) are used for driving the two third clamping jaws (7) to perform clamping actions in a third direction so as to clamp at least one group of copper wire exposed straight line segments (42) penetrating through the through hole (3) of the second clamping jaws (2), wherein the third direction is perpendicular to the first direction and the second direction, respectively.
7. The flat wire stator welding jig according to claim 6, wherein the first clamping jaw (1) is disposed at a side of the second clamping jaw (2) away from the stator core (41) of the flat wire stator, the third clamping jaw (7) includes a clamping portion (71) and a connecting portion (72), the connecting portion (72) is disposed at a side of the first clamping jaw (1) away from the second clamping jaw (2), the connecting portion (72) is connected with the second power telescopic member (8), a second end of the clamping portion (71) is connected with the connecting portion (72), and a first end of the clamping portion (71) is gradually inclined toward a first end of the second clamping jaw (2) and is in contact with a side of the first end of the second clamping jaw (2) toward the first clamping jaw (1).
8. The flat wire stator welding fixture according to claim 7, characterized in that the first end of the first clamping jaw (1) is provided with a dodging slope (13) for dodging the clamping portion (71); And/or, in the third direction, the clamping portion (71) has a smaller dimension than the connecting portion (72).
9. The flat wire stator welding fixture according to claim 7, wherein a second bump (711) is provided at a first end of the clamping portion (71) in a protruding manner, a protruding direction of the second bump (711) is parallel to the third direction, the second bump (711) is used for being inserted between two groups of copper wire exposed straight line segments (42) adjacent to each other in an extending direction of the through hole (3), and the second bumps (711) of the two clamping portions (71) are used for abutting each other to limit clamping movements of the two third clamping jaws (7).
10. The flat wire stator welding jig according to claim 7, wherein a rib (712) is provided protruding from a side of the clamping portion (71) remote from the second clamping jaw (2), and the rib (712) extends along a second end of the clamping portion (71) toward a first end thereof.

Description

Flat wire stator welding fixture Technical Field The utility model relates to the technical field of vehicle part machining, in particular to a flat wire stator welding fixture. Background Such a flat wire design facilitates a more efficient arrangement in the slots of the stator core than conventional circular copper wires, i.e. the flat wire allows a larger number of coils to be arranged in a more compact space for the stator winding, which is very important for improving the power density and performance of the motor. In the process of assembling the flat wire stator, a plurality of copper wires with rectangular sections are required to be inserted into the wire slots at different indexing positions of the stator core, then the parts of the copper wires at the different indexing positions, which extend out of the wire slots, are subjected to flaring and twisting (twisting along the circumferential direction of the stator core) operation according to the requirements of the three-phase motor, the parts of each copper wire, which extend out of the wire slots, are deviated from the corresponding wire slots through flaring and twisting operation, at the moment, the parts of each copper wire, which extend out of the wire slots, comprise copper wire exposed straight-line sections and copper wire bent sections, and after the flaring and twisting operation, the copper wire exposed straight-line sections of two copper wires in different wire slots are abutted together side by side. Finally, copper wire exposed straight line segments with different indexing positions are formed on the stator core, and a plurality of groups of copper wire exposed straight line segments are arranged at each indexing position of the stator core. After flaring and twisting, the enameled wires at the outer ends of the exposed straight-line segments of each group of copper wires are stripped (or stripped before the copper wires are inserted into the trunking), and then the exposed straight-line segments of each group of copper wires are welded, so that the exposed straight-line segments of each group of copper wires are welded into a whole. In order to ensure the reliability of the welding, it is necessary to position the exposed straight line segments of each set of copper wires before welding. Most of the welding positioning modes used in the current industry are positioning tooling plates, the tooling plates are integrally disc-shaped, a plurality of positioning holes are formed in the tooling plates, and each positioning hole is used for inserting a group of copper wire exposed straight-line segments so as to position the group of copper wire exposed straight-line segments. However, in order to facilitate the insertion of the copper wire exposed straight line segments into the positioning holes, the size of the positioning holes is generally larger than that of a group of copper wire exposed straight line segments, which results in poor positioning effect on each group of copper wire exposed straight line segments, gaps, dislocation and the like are easy to occur between each group of copper wire exposed straight line segments, and finally the welding quality, the welding yield and the welding spot drawing force are affected, especially if gaps or open conditions exist between each group of copper wire exposed straight line segments, the non-stripped enameled wires on each group of copper wire exposed straight line segments are easy to burn during welding. In addition, the positioning tooling disc is designed according to the flat wire stator with a specific product type, has poor universality and is only suitable for the product type of the flat wire stator in general. Disclosure of utility model The present utility model aims to solve at least one of the above technical problems. In order to solve the problems, the utility model provides a welding fixture for a flat wire stator, which comprises a first clamping jaw and a second clamping jaw, wherein the first clamping jaw and the second clamping jaw are sequentially arranged along a second direction and are connected with each other in a movable manner along a first direction, the first clamping jaw and the second clamping jaw are respectively provided with a through hole for inserting a copper wire exposed straight line section of the flat wire stator, the penetrating direction of the through hole is parallel to the second direction, the extending direction of the through hole is parallel to the first direction, the first clamping jaw and the second clamping jaw are used for relatively moving so as to clamp the copper wire exposed straight line section penetrating through the through hole together, and the first direction is perpendicular to the second direction. The first clamping jaw and the second clamping jaw of the flat wire stator welding clamp can be respectively provided with a through hole, and in the practical application process, a certain indexing position of the flat