Method and linear device for linear winding of a rectangular wire

Patent metadata

Field	Value
Publication number	US-2025229317-A1
Application number	US-202218704538-A
Country	US
Kind code	A1
Filing date	Oct 20, 2022
Priority date	Oct 25, 2021
Publication date	Jul 17, 2025
Grant date	—

Abstract

A method for winding a rectangular wire in a winding space of a coil former or of a winding tool to form a linearly wound coil, wherein the rectangular wire in the winding space is wound in at least one layer in an axial laying direction. Before the coil is wound, a guide device is introduced at least partially into the winding space, and the guide device has, in the laying direction, a stop which delimits the rectangular wire in the laying direction; the guide device is entrained, during the winding process, as the winding of the coil in the laying direction increases; and the guide device is withdrawn from the winding space before the last winding is wound in front of a second lateral stop. A linear winding device for performing the method is disclosed.

First claim

1 . A method for winding a rectangular wire in a winding space of a coil former to form a linearly wound coil, wherein the rectangular wire in the winding space is wound in at least one layer in an axial laying direction, having the method steps of:
feeding the rectangular wire to a lateral contact of the winding space and holding the wire in relation to the coil former; linear winding of the coil by rotating the coil former while forming windings and continuously feeding the rectangular wire from a feed tracked in the laying direction until the last winding of the layer is wound in the laying direction; wherein a) before winding the coil, a guide device is at least partially inserted into the winding space, wherein the guide device has a stop in the laying direction which limits the rectangular wire in the laying direction; b) the guide device is entrained during winding as the winding of the coil in the laying direction increases; and c) the guide device is moved out of the winding space before the last winding is wound in front of a second lateral contact.

2 . The method according to claim 1 , wherein the guide device has a guide roller which rolls on the rectangular wire and the guide roller of the guide device has a stepped diameter and between a small diameter and a large diameter the stop is provided for the rectangular wire, and wherein the guide roller with the small diameter rolls on the rectangular wire and with the large diameter limits the rectangular wire in the laying direction.

3 . The method according to claim 1 , wherein at least one of the windings is pressed against a winding base by means of at least one pressure roller.

4 . The method according to claim 1 , wherein fixing rollers are provided in a feed of the wire in front of the guide device, which can be displaced in the laying direction, wherein during winding the guide device follows the fixing rollers in the laying direction.

5 . The method according to claim 1 , wherein the guide device is turned after step c) in relation to the laying direction, so that the stop is reversed with respect to the lateral contacts and the rectangular wire and another layer of the coil is wound according to the method.

6 . The method according to claim 1 , wherein the guide device is at least one of resiliently mounted in relation to the coil former or tracked in a force or path controlled manner.

7 . The method according to claim 2 , wherein the guide roller has a reshaping effect on the rectangular wire at least temporarily during unwinding.

8 . A linear winding device for winding a rectangular wire in at least one layer in an axial laying direction in a winding space of a coil former to form a linearly wound coil, the device having a rotatably driven carrier for receiving a coil former, wherein the device is provided for winding the rectangular wire fed to the device in a feed direction from a feed in a linear winding method of a laying direction in the winding space of the coil former,
wherein the device has a guide device movable in the laying direction for guiding the rectangular wire in the winding space, wherein the guide device guiding the rectangular wire in the laying direction has a limiting stop, and the guide device is resiliently mounted in relation to the coil former or is movable in a force or path controlled manner.

9 . The linear winding device according to claim 8 , wherein the guide device can be turned with respect to the laying direction so that the stop of the guide device is in the laying direction when the laying direction is reversed rests on the supplied rectangular wire.

10 . The linear winding device according to claim 8 , wherein the device has at least one pressure roller for pressing the supplied rectangular wire.

11 . The linear winding device according to claim 8 , wherein the guide device has a guide roller which rolls on the rectangular wire and the guide roller of the guide device has a stepped diameter and between a small diameter and a large diameter the stop is provided for the rectangular wire, and wherein the guide roller with the small diameter rolls on the rectangular wire and with the large diameter limits the rectangular wire in the laying direction.

12 . The linear winding device according to claim 8 , the guide device can turn in relation to the laying direction, so that the stop can be reversed with respect to the lateral contacts and the rectangular wire and another layer of the coil can be wound.

Assignees

• Schaeffler Technologies Ag

Inventors

• Goesswein Johannes

Classifications

• H01F41/061

  Winding flat conductive wires or sheets · CPC title

• B21F3/00 Primary

  Coiling wire into particular forms · CPC title

• H01F41/082 Primary

  Devices for guiding or positioning the winding material on the former · CPC title