Process for open-end spinning

US5581991A · kind A · utility

Assignee

• Rieter Ingolstadt Spinnereimaschinenbau AG · DE

Inventor

• Werner Billner · Ingolstadt, DE

Key dates

• Filing date: Jun 6, 1995
• Grant date: Dec 10, 1996
• Expiry date: Jun 6, 2015

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/38
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In open-end spinning, the fibers coming from an opener unit, upon leaving a fiber feeding channel (3), are conveyed to a fiber guiding surface (10) and then to a fiber collection groove (11) of a rotating spinning rotor (1) in which the fibers are deposited and are then spun into the end of a continuously withdrawn yarn. In this spinning process, the fibers coming out of the fiber feeding channel (3) are first compressed essentially in one plane and are at the same time spread out in the direction of rotation of the spinning rotor (1) to be then fed onto a portion of the circumference of the spinning rotor (1) in the form of a thin veil. To carry out this process, the wall of the last longitudinal segment (30) which is a continuation of the next-to-last longitudinal segment (31) of the fiber feeding channel (3) is made in the form of a fiber distribution surface (300)which extends substantially at a perpendicular to the plane passing through the center lines (310, 301) of the two above-mentioned longitudinal segments (31, 30). The last longitudinal segment (30) of the fiber feeding channel (3) may let out into a radial slit (6) which is provided with a surface (60) for the spreadin…