Method of monitoring the moving yarn at a winding station of an automatic winding frame

US5725165A · kind A · utility

Assignee

• W. Schlafhorst AG & Co. · DE

Inventors

• Rolf Haasen · Mönchengladbach, DE
• Heribert Kargel · Viersen, DE
• Horst Kippe · Mönchengladbach, DE

Key dates

• Filing date: Dec 11, 1996
• Grant date: Mar 10, 1998
• Expiry date: Dec 11, 2016

Classification

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

Abstract

A method for monitoring a traveling yarn at a winding station of an automatic winding machine having an electronic slub catcher which produces an AC voltage signal proportional to a dynamic yarn signal responsive to yarn movement and a yarn cutting signal responsive to a fluctuation in yarn dimension outside a predetermined tolerance range includes the steps of producing a static yarn signal responsive to the presence of yarn in the electronic slub catcher, monitoring and evaluating the static yarn signal, producing a separating signal responsive to the absence of static yarn signal due to the absence of yarn from the slub catcher and monitoring and evaluating the separating signal.