Device for producing a twisted yarn by an integrated spinning and twisting process as well as fiber feed tube

US6311468A · kind A · utility

Assignee

• Volkmann GMBH · DE

Inventors

• Markus Beckmann · Krefeld, DE
• Karl-Josef Brockmanns · Anrath, DE
• Ingo Filz · Viersen, DE
• Roland Greis · Tönisvorst, DE
• Stefan Kross · Viersen, DE
• Guido Spix · Kaarst, DE

Key dates

• Filing date: Feb 7, 2000
• Grant date: Nov 6, 2001
• Expiry date: Feb 7, 2020

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H7/90
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A device for producing a twisted yarn by an integrated or combined spinning and twisting process is provided and comprises a two-for-one twisting spindle with at least two spinning rotors, positioned within the yarn balloon produced by the twisting process, for producing the individual yarns to be twisted, into which spinning rotors the disentangled fiber material is supplied respectively by the fiber supply tubes, which are connected to the fiber material disentangling units. The fiber material disentangling units are combined to a single fiber material disentangling apparatus with common drive elements for the two disentangling units. The fiber material disentangling apparatus is arranged at least partially below the two-for-one twisting spindle so that the individual spindles can be arranged relatively closely adjacent to one another, wherein each fiber supply tube follows over a portion of its length a circular arc wherein the angle a of directional change to the radius of curvature (r) of the central line of the tube has a ratio of .alpha./r=2.5 to 3.5.