Process and apparatus for the production of strands for Bowden cables

US4680952A · kind A · utility

Assignee

• Max Kammerer GmbH · DE

Inventors

• Karl Burghoff · Oberursel, DE
• Werner Schiller · Langen (Hessen), DE
• Wilhelm Albrecht · Lambach, DE
• Herbert Harsch · Waiblingen, DE
• Heinz-Georg Burghoff · Reichenbach, DE

Key dates

• Filing date: Feb 19, 1985
• Grant date: Jul 21, 1987
• Expiry date: Feb 19, 2005

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D07B5/12
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A process for the production and further processing of strands for Bowden cables of several wires stranded together by twisting, comprising dressing the strands after stranding between reversing rolls, subsequently stretching and again dressing between reversing rolls. Dressing is effected prior to stretching in several stages with decreasing bending radii and after the stretching again in several stages with increasing bending radii, while the stretching is performed with a force approximately within the area of the elastic limit, corresponding to 45% to 70%, preferably to 55% and 65% of the ultimate tensile strength of the strand. The apparatus comprises a dressing line of two roll conveyors with reversing rolls set in gaps with respect to each other on alternating sides, a stretching line with two tension sheaves set at a constant distance, one of which is driven by a brake motor and the other by a tension motor, another dressing line of two roll conveyors with reversing rolls set in gaps with respect to each other on alternating sides. The rolls of the lower conveyor and of the upper conveyor are combined respectively in magazines and the lower conveyor is mounted stationarily …