Spinning process and device for the production of a yarn

US5241813A · kind A · utility

Assignee

• Schubert & Salzer Maschinenfabrik AG · DE

Inventors

• Johann Rottmayr · Reutlingen, DE
• Werner Billner · Ingolstadt, DE

Key dates

• Filing date: Mar 7, 1991
• Grant date: Sep 7, 1993
• Expiry date: Mar 7, 2011

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/16
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to a spinning process and device for the production of yarn. Fibers are conveyed through a feeding channel from an opening roller and deposited onto a perforated collection surface, such as a perforated roll or disk, which is subjected to suction in at least one zone. The fibers are oriented on the collection surface along a main sense of orientation of the perforations. The fibers are conveyed through the suction zone and formed into a fiber accumulation along a collection line. A suction insert is included generally beneath the perforated collection surface and defines the suction zone and collection line for the fibers. The fibers forming into a fiber accumulation along the collection line are pre-twisted along the collection line. A separate twisting element independent from the collection surface is provided downstream from the collection surface and provides a final pre-twist to yarn drawn off of the collection surface. The yarn is drawn through the twisting element by means of a conventional yarn draw-off device.