Yarn winding machine

US4932598A · kind A · utility

Assignee

• Barmag AG · DE

Inventor

• Albert Stitz · Lingen (Ems), DE

Key dates

• Filing date: Oct 6, 1989
• Grant date: Jun 12, 1990
• Expiry date: Oct 6, 2009

Classification

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

Abstract

The invention relates to a high speed yarn winding machine for winding a filament yarn, and which comprises a motor-driven winding spindle and a contact roll rotatingly resting against the surface of a yarn package being wound on the spindle, and with the contact roll serving to guide the yarn onto the package. The contact roll is adapted to be raised from the package surface during a package doff, and it can be rotatably driven while in its raised position by an air turbine wheel, which is co-axially connected to the contact roll. The wheel is provided with two annular rings of recesses which are concentric to its axis, and an air supply system is provided which is able to selectively direct compressed air toward either one of the two rings of recesses, to thereby permit the turbine wheel and thus the contact roll to be rotated in either direction. Thus the rotational speed of the contact roll may be maintained during a package doff, or reduced in speed or stopped in case of a malfunction in the yarn transfer to a new package.