Method and device for twisting single cables

Patent metadata

Field	Value
Publication number	US-12354765-B2
Application number	US-202018009811-A
Country	US
Kind code	B2
Filing date	Jun 26, 2020
Priority date	Jun 26, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A method and a device twist single cables about a twisting axis. The single cables each run along a cable axis and have wires, which are twisted in a strand twisting direction to form a strand, and also each have a first cable end and a second cable end. The first cable ends are held separately by a single rotating unit in each case. The second cable ends are held by a twisting unit. The second cable ends are rotated jointly about the twisting axis counter to the strand twisting direction to produce a twisted cable bundle. During the joint rotation, the first cable ends are rotated separately about a cable axis of the respective single cable, in the same rotation direction as the joint rotation. The single cables are each relieved of torsion thereby.

First claim

The invention claimed is:

1. A method for twisting single cables about a twisting axis, wherein the single cables each run along a cable axis, and wherein each single cable comprises a strand, each strand comprising twisted wires having a strand twisting direction, and wherein the single cables each comprise a first cable end and a second cable end, wherein the method comprises the following processes in this sequence:
separately holding the first cable ends, and holding the second cable ends;
jointly rotating the second cable ends about the twisting axis in a direction counter to the strand twisting direction to create a twisted cable bundle comprising a specified or specifiable number of lays and/or comprising a specified or specifiable twisting lay length; and
while jointly rotating the second cable ends about the twisting axis, separately rotating the first cable ends about the cable axis of the respective single cable in the same direction of rotation as the second cable ends are jointly rotated about the twisting axis to relieve the respective single cable of tension.

2. The method according to claim 1 , further comprising:
prior to jointly rotating the second cable ends about the twisting axis, separately rotating each of the first cable ends about the cable axis of the respective single cable for pre-torsioning.

3. The method according to claim 2 , wherein the second cable ends are jointly rotated about the twisting axis by a selected angle of rotation to reach the specified or specifiable number of lays and wherein each of the first cable ends is separately rotated about the cable axis by an angle of rotation no more than 10% of the selected angle of rotation.

4. The method according to claim 1 , further comprising:
prior to jointly rotating the second cable ends about the twisting axis, separately rotating each of the first cable ends about the cable axis of the respective single cable for pre-torsioning in a direction identical to the strand twisting direction.

5. The method according to claim 1 , further comprising:
prior to jointly rotating the second cable ends about the twisting axis, separately rotating each of the first cable ends about the cable axis of the respective single cable for pre-torsioning in a direction counter to the strand twisting direction.

6. The method according to claim 1 , further comprising:
repeatedly determining a variable associated with a torsional moment or a torsional stress of at least one of the single cables,
wherein the first cable ends are separately rotated about the cable axis of the respective single cable until a determined variable falls below a predetermined or predeterminable threshold value.

7. The method according to claim 1 , wherein the cable bundle comprises two single cables.

8. The method according to claim 1 , further comprising:
trimming the single cables; and/or
attaching one or several contact parts to at least one of the first cable end and of the second cable end of the single cables.

9. The method according to claim 1 , further comprising:
prior to jointly rotating the second cable ends about the twisting axis, applying a tensile force essentially along the twisting axis for extending the single cables.

10. The method according to claim 1 , further comprising:
moving the first and second cable ends towards one another for compensating a twist-related shortening of the cable bundle.

11. A device for twisting single cables about a twisting axis, wherein the single cables in each case run along a cable axis and comprise wires, which are in each case twisted to form a strand in a strand twisting direction, as well as in each case a first cable end and in each case a second cable end, wherein the device comprises:
single rotatable clamps each configured to separately hold a respective one of the first cable ends;
a twisting head configured to hold the second cable ends,
wherein the single rotatable clamps and the twisting head are arranged so that they hold the single cables essentially parallel to the twisting axis,
wherein the device is configured for carrying out the method according to claim 1 .

12. The device according to claim 11 , wherein the twisting head is configured to be driven in a rotatory manner about the twisting axis.

13. The device according to claim 11 , wherein either the twisting head or all single rotatable clamps, or both the twisting head and all single rotatable clamps are additionally movably arranged essentially parallel to the twisting axis, and wherein the device is configured to move the first and second cable ends towards one another for compensating a twist-related shortening of the cable bundle.

14. The device according to claim 11 , wherein either the twisting head or all single rotatable clamps, or both the twisting head and all single rotatable clamps are additionally movably arranged essentially along the twisting axis, and wherein the device is configured to apply prior to jointly rotating the second cable ends about the twisting axis, a tensile force essentially parallel to the twisting axis for extending the single cables.

15. The device according to claim 11 , which further comprises a guide arranged between the single rotatable clamps and the twisting head, wherein the guide is configured to separate the single cables at least in some regions.

Assignees

• Komax Holding Ag

Inventors

• Straessle Cassian
• Staubli Dominik
• Lochmatter Jan

Classifications

• B21F15/04

  without additional connecting elements or material, e.g. by twisting · CPC title

• B21F15/02

  wire with wire · CPC title

• H01B13/0207 Primary

  Details; Auxiliary devices · CPC title

• H01B13/02 Primary

  Stranding-up · CPC title