Method and apparatus for monitoring a leading end of a weft thread in a stretching channel in an air jet loom

US6834683B2 · kind B2 · utility

Assignee

• Lindauer DORNIER Gesellschaft mbH · DE

Inventors

• Werner Birner · Gettorf, DE
• Herbert Reinhardt · Achberg, DE
• Christian Hannes · Schallstadt, DE
• Alexander Chvorak · Gettorf, DE
• Peter Dornier · Gettorf, DE

Key dates

• Filing date: May 10, 2002
• Grant date: Dec 28, 2004
• Expiry date: Dec 15, 2022

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D03D51/34
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The leading end of a weft thread exiting from a weft insertion channel in an air jet weaving loom is monitored by a weft stop motion positioned in a weft stretching channel directly downstream, as viewed in the weft motion direction, of an exit of the weft insertion channel. The weft stop motion is either an additional weft stop motion monitor or it is the first weft stop motion device repositioned from a location at the exit of the weft insertion channel to a location in the weft stretching channel. In such a position in the weft stretching channel faults or deformations such as a loop in the leading end section of the weft thread are readily or positively detected for generating a respective loom control signal.