Apparatus for monitoring a warp yarn movement in a multi-phase weaving machine

US5575313A · kind A · utility

Assignee

• Sulzer Rueti AG · CH

Inventors

• Thomas Weber · Ludwigshafen, DE
• Dietmar Markward · Rüti, CH
• Jaques Peulen · Rüti, CH

Key dates

• Filing date: Apr 11, 1995
• Grant date: Nov 19, 1996
• Expiry date: Apr 11, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/31
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In a multi-phase weaving machine, an apparatus (16) for monitoring warp yarn movement (3a, 3b) in particular leno warp yarns. The drawing-off movement or the drawing-off speed of the warp yarns (3a, 3b) can be detected by an electronic sensor (6a, 6b; 6c) so that it can in particular be determined whether the drawing-off movement or the drawing-off speed has a very low or relatively large value. If the value is very low, in particular when the warp yarn is standing still while the weaving process is running, it can be concluded that the warp yarn has broken. If the value of the drawing-off speed lies above a preset threshold value it can be concluded that the warp yarn is being driven in an undesired manner so that an error signal (13) is produced in order to interrupt the weaving process.