Method and device for untwisting and smoothing a cable end of a twisted cable

Patent metadata

Field	Value
Publication number	US-12544825-B2
Application number	US-202318202069-A
Country	US
Kind code	B2
Filing date	May 25, 2023
Priority date	Jun 10, 2022
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

A method and a device untwists and smooths a cable end of a cable formed from single lines twisted in a twisting direction, using the device. The device includes an untwisting gripper having first and second untwisting jaws; a clamping gripper upwards of the untwisting gripper in the cable run having first and second clamping plates; and a cable gripper upwards of the clamping gripper. The method includes gripping the cable using the cable gripper; introducing the cable end between the open clamping gripper plates and the open untwisting gripper jaws; closing the plates and jaws; rotating the untwisting gripper counter to the twisting direction for untwisting the cable end; opening the jaws, reducing the jaws-plates distance and closing the plates; and smoothing the cable end by enlarging the distance between cable gripper and clamping gripper when the cable is clamped and simultaneously performing oscillating rotational untwisting gripper movements.

First claim

What is claimed is:

1 . A method for untwisting and smoothing a cable end of a cable, which is formed from a plurality of single lines which are twisted in a twisting direction about a cable axis, by means of a device, wherein the method comprises:
providing the device; wherein the device includes an untwisting gripper having a first untwisting jaw and a second untwisting jaw; a clamping gripper, which is arranged upwards of the untwisting gripper in the cable run, having a first clamping plate and a second clamping plate; and a cable gripper, which is arranged upwards of the clamping gripper in the cable run, gripping the cable using the cable gripper; introducing the cable end between the open clamping plates of the clamping gripper and the open untwisting jaws of the untwisting gripper; closing the clamping plates and the untwisting jaws; rotating the untwisting gripper in an untwisting direction counter to the twisting direction for untwisting the cable end; opening the untwisting jaws, reducing the distance of the untwisting jaws from the clamping plates along the cable axis and closing the untwisting jaws; and carrying out a smoothing process of the cable end by enlarging the distance between cable gripper and clamping gripper when the cable is clamped along the cable axis and at the same time performing oscillating rotational movements of the untwisting gripper.

2 . The method according to claim 1 , wherein the oscillating rotational movements of the untwisting gripper are carried out alternately in the twisting direction and untwisting direction.

3 . The method according to claim 1 , wherein the oscillating rotational movements are carried out in the twisting direction and in the untwisting direction, respectively with less than one revolution of the untwisting gripper ( 110 ) being carried out.

4 . The method according to claim 1 , wherein the rotation of the untwisting gripper is continued in an untwisting direction counter to the twisting direction for untwisting the cable end beyond a complete untwisting of the single lines of the cable end.

5 . The method according to claim 1 , further comprising:
reducing a closing force of the clamping plates and/or reducing a closing force of the untwisting jaws prior to the smoothing process.

6 . The method according to claim 1 , wherein during the smoothing process, at least three oscillating rotational movements are performed.

7 . The method according to claim 1 , further comprising:
prior to the smoothing process; specifying at least one parameter from a speed during the enlargement of the distance between cable gripper and clamping gripper, an oscillation speed when performing the oscillating rotational movements and an oscillation angle when performing the oscillating rotational movements.

8 . The method according to claim 1 , further comprising, after the smoothing process:
opening the clamping plates and the untwisting jaws; reducing the distance between cable gripper and clamping gripper; closing the clamping plates and the untwisting jaws; and carrying out a further smoothing process of the cable end by enlarging the distance between cable gripper and clamping gripper when the cable is clamped and at the same time performing oscillating rotational movements of the untwisting gripper.

9 . The method according to claim 1 , wherein the oscillating rotational movements are carried out in the twisting direction and in the untwisting direction, respectively with less than one half revolution of the untwisting gripper being carried out.

10 . The method according to claim 1 , wherein the rotation of the untwisting gripper, is continued in an untwisting direction counter to the twisting direction for untwisting the cable end beyond a complete untwisting of the single lines of the cable end by more than one half revolution of the untwisting gripper.

11 . The method according to claim 1 , wherein during the smoothing process, at least five oscillating rotational movements are performed.

12 . The method according to claim 1 , wherein during the smoothing process, at least ten oscillating rotational movements are performed.

13 . A device for untwisting and smoothing a cable end of a cable, which is formed from a plurality of single lines which are twisted in a twisting direction about a cable axis, the device comprising:
an untwisting gripper having a first untwisting jaw and a second untwisting jaw, a clamping gripper, which is arranged upwards of the untwisting gripper in the cable run, having a first clamping plate and a second clamping plate, and a cable gripper, which is arranged upwards of the clamping gripper in the cable run, wherein the device is configured to grip the cable using the cable gripper; introduce the cable end between the open clamping plates of the clamping gripper and the open untwisting jaws of the untwisting gripper; close the clamping plates and the untwisting jaws; rotate the untwisting gripper in an untwisting direction counter to the twisting direction for untwisting the cable end; open the untwisting jaws, reduce the distance of the untwisting jaws from the clamping plates along the cable axis and close the untwisting jaws; and carry out a smoothing process of the cable end by enlarging the distance between cable gripper and clamping gripper when the cable is clamped along the cable axis and at the same time performing oscillating rotational movements of the untwisting gripper.

14 . The device according to claim 13 , wherein the untwisting gripper has a pneumatic untwisting parallel gripper, which carries the untwisting jaws.

15 . The device according to claim 13 , wherein the clamping gripper has a pneumatic clamping parallel gripper, which carries the clamping plates.

16 . The device according to claim 14 , wherein the pneumatic untwisting parallel gripper and/or the pneumatic clamping parallel gripper in each case comprises a pressure control valve for specifying a clamping force.

17 . The device according to claim 13 , wherein the untwisting gripper is rotatable about the cable axis in a specifiable angle.

18 . The device according to claim 13 , wherein the clamping gripper is displaceable in a cable longitudinal direction.

19 . The device according to claim 13 , wherein the untwisting gripper is rotatable about the cable axis in a programmable angle.

20 . The device according to claim 13 , wherein the clamping gripper is displaceable in a programmable manner in a cable longitudinal direction.

Assignees

• Komax Holding Ag

Inventors

• Gut Daniel
• Losonczy Andras

Classifications

• H02G1/1292

  Devices for dismantling twisted filaments · CPC title

• B21F1/023 Primary

  in a device rotating about the wire axis · CPC title

• H01R43/28 Primary

  for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26 · CPC title