Process and device for piecing to an open-end friction spinning device

US4819420A · kind A · utility

Assignee

• Schubert & Salzer · DE

Inventors

• Kurt Lovas · Gaimersheim, DE
• Werner Billner · Ingolstadt, DE

Key dates

• Filing date: Apr 13, 1987
• Grant date: Apr 11, 1989
• Expiry date: Apr 13, 2007

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/52
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In order to piece to an open-end friction spinning device with two friction spinning elements driven in the same direction and forming a nip subjected to suction, fibers fed into such nip are twisted into a fiber bundle. The fiber bundle is partially conveyed out of the nip in a longitudinal direction, grasped there, and then transferred to a winding device. An auxiliary conveying device is provided to convey the fiber bundle from a thread forming zone adjacent the spinning element nip up to the draw-off side end of such friction spinning elements. A grabber is provided to grasp the fiber bundle as it leaves such nip of the friction spinning elements and to transfer the forming thread to a draw-off device.