Apparatus for Twisting Welding Portion of Segment Type Stator Coil

Patent metadata

Field	Value
Publication number	US-2022052588-A1
Application number	US-202017093983-A
Country	US
Kind code	A1
Filing date	Nov 10, 2020
Priority date	Aug 13, 2020
Publication date	Feb 17, 2022
Grant date	—

Abstract

An apparatus for twisting welding portions of a segment type stator coils is provided. The welding portions are in a number of layers and inserted into slots of a stator core. The apparatus includes a frame, a number of twisting jigs, and a partition member detachably provided at one of a pair of neighboring twisting jigs, and blocking the coil receiving recesses facing each other of the twisting jigs forming the pair. Each of the twisting jigs is provided for each layer of the stator coils, along a radial direction of the stator core, forming coil receiving recesses along a circumferential direction facing another twisting jig forming a pair, installed on the frame to be rotatable in different directions depending on layers of the stator coils, and is generally ring-shaped.

First claim

What is claimed is:

1 . An apparatus for twisting welding portions of a segment type stator coils, the welding portions being in a plurality of layers and inserted into slots of a stator core, the apparatus comprising
a frame; a plurality of twisting jigs, each of which is provided for each layer of the stator coils, along a radial direction of the stator core, forming coil receiving recesses along a circumferential direction facing another twisting jig forming a pair, installed on the frame to be rotatable in different directions depending on layers of the stator coils, and is generally ring-shaped; and a partition member detachably provided at one of a pair of neighboring twisting jigs, and blocking the coil receiving recesses facing each other of the twisting jigs forming the pair.

2 . The apparatus of claim 1 , further comprising:
a driving unit installed on the frame and rotating the plurality of twisting jigs in different directions for odd-numbered layers and even-numbered layers of the stator coils.

3 . The apparatus of claim 2 , wherein the driving unit comprises:
a plurality of drive gear members disposed on the frame along an up and down direction and respectively connected to the plurality of twisting jigs; and a plurality of servo-motors respectively connected to the plurality of drive gear members.

4 . The apparatus of claim 1 , wherein the partition member comprises:
bolt engagement portions horizontally disposed on an upper surface of the twisting jig interposing the coil receiving recess, and bolt-engaged with the upper surface of the twisting jig; and a partition wall disposed between the bolt engagement portions and integrally connected to the bolt engagement portion, and vertically disposed between the coil receiving recesses facing each other of the twisting jigs.

5 . An apparatus for twisting welding portions of a segment type stator coils, the welding portions being in a plurality of layers and inserted into slots of a stator core, the apparatus comprising
a frame; a core gripper installed on an upper side of the frame to be movable in an up and down direction and gripping an inner circumference of the stator core; a crown portion fixing jig installed on the core gripper and configured to fix a crown portion at an upper side of the stator coil; a welding portion fixing jig installed on the frame and configured to fix the welding portions of the stator coils; a plurality of twisting jigs, each of which is provided for each layer of the stator coils, along a radial direction of the stator core, forming coil receiving recesses along a circumferential direction facing another twisting jig forming a pair, installed on the frame to be rotatable in different directions depending on layers of the stator coils, and is generally ring-shaped; and a partition member detachably provided at one of a pair of neighboring twisting jigs, and blocking the coil receiving recesses facing each other of the twisting jigs forming the pair.

6 . The apparatus of claim 5 , wherein the crown portion fixing jig comprises:
first fixing members provided on the core gripper to be movable radially back and forth and inserted between the crown portions.

7 . The apparatus of claim 5 , wherein the welding portion fixing jig comprises:
second fixing members provided on the frame to be movable radially back and forth and inserted between the welding portions of the stator coils.

8 . The apparatus of claim 5 , further comprising a driving unit installed on the frame and rotating the plurality of twisting jigs in different directions for odd-numbered layers and even-numbered layers of the stator coils,
wherein the driving unit comprises: a plurality of drive gear members disposed on the frame along an up and down direction and respectively connected to the plurality of twisting jigs; and a plurality of servo-motors respectively connected to the plurality of drive gear members.

9 . The apparatus of claim 5 , wherein the partition member is provided in a generally ring shape and is bolt-engaged with an upper surface of the twisting jig.

10 . The apparatus of claim 9 , wherein the partition member comprises:
bolt engagement portions horizontally disposed on the upper surface of the twisting jig interposing the coil receiving recess, and bolt-engaged with the upper surface of the twisting jig; and a partition wall disposed between the bolt engagement portions and integrally connected to the bolt engagement portion, and vertically disposed between the coil receiving recesses facing each other of the twisting jigs.

11 . The apparatus of claim 5 , wherein the partition member comprises a plurality of unit partitions that are bolt-engaged with an upper surface of the twisting jig along the circumferential direction of the twisting jig.

12 . The apparatus of claim ii, wherein the unit partition comprises:
a pair of bolt engagement portions that are horizontally disposed on the upper surface of the twisting jig interposing the coil receiving recess and bolt-engaged with the upper surface of the twisting jig; and a partition wall that is disposed between and integrally connected to the pair of bolt engagement portions, and is vertically disposed between the coil receiving recesses facing each other of the twisting jigs.

13 . The apparatus of claim 12 , wherein:
a bolt engagement hole is formed in the pair of bolt engagement portions; and a bolt engagement recess connected to the bolt engagement hole is formed on the upper surface of the twisting jig.

14 . The apparatus of claim 5 , wherein the partition member comprises a plurality of unit partitions that are disposed along the circumferential direction of the twisting jig and inserted from an upper surface of the twisting jig toward the lower surface.

15 . The apparatus of claim 14 , wherein the unit partition is provided as a plate type in which a central portion is bent in a thickness direction of the twisting jig.

16 . The apparatus of claim 15 , wherein the unit partition comprises:
a pair of insertion portions provided at both sides of the central portion and inserted into the twisting jig in the up and down direction interposing the coil receiving recess; and a partition wall that is a central portion disposed between and integrally connected to the pair of insertion portions, and vertically disposed between the coil receiving recesses facing each other of the twisting jigs.

17 . The apparatus of claim 16 , wherein:
the insertion portion is connected to both sides of the partition wall along the circumferential direction of the twisting jig and bent in a thickness direction of the twisting jig; and the partition wall is provided in an open end form.

18 . The apparatus of claim 16 , wherein an insertion slit into which the insertion portion is inserted is formed downward from the upper surface of the twisting jig.

19 . The apparatus of claim 16 , wherein:
neighboring insertion portions of the unit partitions are fixed by washers; and the washers are bolt-engaged with the upper surface of the twisting jig.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Sugil

Classifications

• H02K15/36 Primary

  Processes or apparatus for simultaneously twisting two or more open ends of hairpins after their insertion into the machine (for simultaneously twisting two or more hairpins prior to mounting into the machine H02K15/0428) · CPC title

• H02K15/33

  Connecting winding sections; Forming leads; Connecting leads to terminals · CPC title

• H02K15/28 Primary

  using electrodynamic forces · CPC title

• H02K15/085

  by laying conductors into slotted stators · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title