Opening roller for an opening device of an open-end spinning machine

US4805395A · kind A · utility

Assignees

• Fritz Stahlecker · DE
• Hans Stahlecker · DE

Inventors

• Fritz Stahlecker · Geislingen an der Steige, DE
• Hans Stahlecker · Lützen, DE
• Gerhard Fetzer · Süßen, DE
• Eugen Bader · Rottweil, DE

Key dates

• Filing date: May 9, 1988
• Grant date: Feb 21, 1989
• Expiry date: May 9, 2008

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01H4/32
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

An opening assembly for an open-end spinning arrangement is provided which includes a steel alloy fitting ring element arranged on a rotatable roller body element for opening a silver into individual fibers. The fitting ring element includes a base wall having a radial thickness no greater than 2.2 mm, and includes a plurality of radially extended teeth unitary with the fitting ring element extending from the base wall. The teeth have lateral flanks formed by at least one cirumferential groove on an outer surface of the fitting ring element, and have front and back edges formed by at least two axially extending longitudinal grooves. The front and back edges have a radial height of about 0.75-0.80 times a radial height of the lateral flanks. The base wall radial thickness has a dimension of about 0.60-0.72 times the radial height of the lateral flanks. The height of the teeth is greater than the distance between the lateral flanks of axially adjacent teeth. The teeth are inclined toward a rotational direction. The teeth have an angle between the front and back edges between about 15.degree. to 45.degree..