Stepping motor arrangement for driving a silver feed roller in a rotor spinning machine

US5509261A · kind A · utility

Assignee

• W. Schlafhorst AG & Co. · DE

Inventors

• Heinz-Georg Wassenhoven · Wittlich, DE
• Manfred Lassmann · Nettetal, DE

Key dates

• Filing date: Mar 21, 1994
• Grant date: Apr 23, 1996
• Expiry date: Mar 21, 2014

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/50
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A rotor spinning machine has a plurality of simultaneously operated spinning stations each with a spinning rotor, an opening roller, a feed roller for delivering sliver to the opening roller, and a stepping motor connect directly to the feed roller for driving thereof. An actuating arrangement is provided for selectively actuating each stepping motor in a normal increment mode during spinning operation and in a microincrement mode during yarn piecing operations.