Device for separating the core and the sheath of a cable and method for separating the core and the sheath of a cable

Patent metadata

Field	Value
Publication number	US-12283395-B2
Application number	US-202017769073-A
Country	US
Kind code	B2
Filing date	Oct 14, 2020
Priority date	Oct 14, 2019
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A device for separating a core and sheath of cable includes an apparatus delivering the cable along cable feed axis parallel to longitudinal axis of cable. Two knives cut sheath to two portions mechanically dissociated from one another. Each knife cuts sheath over its whole thickness in radial cutting zone with respect to central axis of the cable. Two blockers extend the knives in the direction of the feed axis of the cable and keep the core in position along the feed axis of the cable. At least one ramp extends from each knife in a second direction perpendicular to the radial cutting zone and to the feed axis of the cable. The ramp has an outer surface extending away from the cable feed axis in the first direction when movement takes place in the feed direction of the cable to separate the core and the portions of the sheath.

First claim

The invention claimed is:

1. Device for separating a core and a sheath of a cable, comprising:
an apparatus configured to feed the cable along a feed axis parallel to a longitudinal axis of the cable up to an outlet passing between at least two knives,
the at least two knives being configured to cut the sheath over its whole thickness and to form at least two portions of the sheath mechanically dissociated from one another, each knife comprising a cutting front extending in a first radial direction with respect to the longitudinal axis of the cable to cut the sheath,
at least two ramps extending from the at least two knives, the at least two ramps being configured to maintain the separation between the at least two portions of the sheath and to mechanically separate the sheath and the core up to the outlet by modifying the movement path of the at least two portions of the sheath differently with respect to the feed axis, and
at least two deflectors arranged down-line from the at least two ramps to receive the portions of the sheath, the at least two deflectors having an outer surface modifying the direction of movement of the portions of the sheath perpendicularly to the longitudinal axis of the core.

2. Device for separating a core and a sheath of a cable according to claim 1 , wherein the at least two knives comprise two knives having a cutting front in the same plane, said two knives being separated by a first separating distance, and the ramps have a contact surface designed to receive the portion of the sheath on outlet from the knives, the contact surface being oriented so as to move away from the longitudinal axis of the core when movement of the sheath takes place from up-line to down-line.

3. Device for separating a core and a sheath of a cable according to claim 2 , wherein said two knives are mounted fixed on two supports in association with adjustment devices configured to move the two supports and configured to define a value of first separating distance between the two knives.

4. Device for separating a core and a sheath of a cable according to claim 2 , comprising only two knives arranged to form two identical portions of the sheath.

5. Device for separating a core and a sheath of a cable according to claim 2 , wherein the cutting zones of the two knives belong to a vertical plane.

6. Device for separating a core and a sheath of a cable according to claim 1 , wherein each cutting front has a first end extending along the feed axis in adjacent manner to the ramp and possibly associated therewith up to the at least two deflectors.

7. Device for separating a core and a sheath of a cable according to claim 1 , wherein each knife has a cutting front arranged radially and perpendicularly with respect to the longitudinal axis of the cable or a cutting front arranged radially and extending away from the longitudinal axis of the core when movement of the sheath takes place from up-line to down-line.

8. Device for separating a core and a sheath of a cable according to claim 1 , wherein the at least two ramps are mounted fixed on associated at least two knives.

9. Device for separating a core and a sheath of a cable according to claim 1 , wherein the at least two deflectors are mounted pressing on the at least two knives to define a through hole delineated by the at least two deflectors and the at least two ramps.

10. Device for separating a core and a sheath of a cable according to claim 1 , wherein the at least two knives and the at least two deflectors are mounted on a ring designed so that the core passes through the centre of the ring, the at least two deflectors moving the portions of the sheath towards the outer part of the ring.

11. Device for separating a core and a sheath of a cable according to claim 1 , comprising a centring device fitted between an apparatus configured to deliver the cable and the at least two knives, the centring device comprising at least one guide mounted perpendicularly movable with respect to the cable feed axis to shift the longitudinal axis of the cable with respect to the at least two knives.

12. Device for separating a core and a sheath of a cable according to claim 11 , wherein the apparatus configured to feed the cable applies a pressure on the cable by means of two rotary rollers, the pressure being configured to deform the sheath and make the shape of the sheath uniform.

13. Device for separating a core and a sheath of a cable according to claim 12 , wherein the apparatus has two rotary rollers having a V-shaped groove and wherein the apparatus applies a pressure configured to deform the sheath and to provide two diametrically opposite first the sheath zones having a larger thickness than two diametrically opposite second the sheath zones, the two first sheath zones having an offset of 90° with respect to the two second the sheath zones, the two knives being arranged to cut the sheath in the two first the sheath zones.

14. Method for separating a core and a sheath of a cable successively comprising:
providing a cable provided with a sheath surrounding a core, the cable running along a feed axis parallel to a longitudinal axis of the cable and with a feed direction,
cutting the sheath over its whole thickness by means of at least two knives to form at least two portions of the sheath mechanically dissociated from one another, the two knives extending in a first radial direction with respect to the longitudinal axis of the cable,
making each portion of the sheath slide on at least one ramp extending from the at least two knives to keep the portions of the sheath separated from one another and to strip the sheath from the core, and to secure the core along the cable feed axis, the at least one ramp having an outer surface extending away from the cable feed axis in the feed direction of the cable to separate the core and the portion of the sheath when the cable runs along the feed axis,
making each portion of the sheath slide on a deflector to move the portions of the sheath in a second direction perpendicular to the first direction and to the cable feed axis, the core passing on one side of the deflector and the sheath on the other side of the deflector.

Assignees

• A3I
• Agence Nat Pour Ia Gestion Des Dechets Radioactifs
• Mtb Mfg
• Commissariat Energie Atomique
• Agence Nat Pour La Gestion Des Dechets Radioactifs
• Commissariat Alenergie Atomique Et Aux Energies Alternatives

Inventors

• Bosia Benjamin
• Margueritte Laurent
• Roos Rémi

Classifications

• H02G1/1217

  making a longitudinal cut · CPC title

• Y02W30/82

  Recycling of waste of electrical or electronic equipment [WEEE] · CPC title

• H01B15/006 Primary

  Making a longitudinal cut · CPC title

• H02G1/12 Primary

  for removing insulation or armouring from cables, e.g. from the end thereof · CPC title