Method and device for winding yarn onto a conical spool body

US6196491A · kind A · utility

Assignee

• Volkmann GMBH · DE

Inventors

• Stefan Kross · Viersen, DE
• Paul Schroers · Viersen, DE
• Hans Raasch · Wittlich, DE
• Guido Spix · Kaarst, DE

Key dates

• Filing date: Feb 12, 1999
• Grant date: Mar 6, 2001
• Expiry date: Feb 12, 2019

Classification

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

Abstract

In a method for winding a yarn onto a spool body, the conical spool body is driven about a longitudinal axis by a first drive unit. A yarn is guided onto the spool body by a reciprocating yarn guide thereby winding the yarn onto the spool body. A constant yarn winding speed is provided along the length of the spool body during the entire yarn winding process by adjusting the revolutions per minute of the spool body synchronously with a movement of the reciprocating yarn guide. The revolutions per minute are controlled by a computing and control unit based on the instant position of the reciprocating yarn guide and the diameter of the spool body at the instant position. The device for performing this method has a sensor for detecting the changing diameter of the spool body, and the reciprocating yarn guide has a detection device for detecting the instant position of the reciprocating yarn guide.