Roll shell support

US6068582A · kind A · utility

Assignee

• Voith Sulzer Papiermaschinen GmbH · DE

Inventor

• Joachim Grabscheid · Gerstetten, DE

Key dates

• Filing date: Jul 13, 1998
• Grant date: May 30, 2000
• Expiry date: Jul 13, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C13/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A roll for use in a paper machine including a bendable roll shell disposed around a continuous roll carrier. The roll shell is supported at least in the radial direction on the roll carrier only in an axial central region. Axially outside the central region, the roll shell and/or carrier are respectively shaped and positioned that there is radial spacing between them for allowing the roll shell to bend in relation to the roll carrier under the weight of the roll shell and the force exerted by the belt, web, or the like, partially wrapped around the roll shell. To improve the behavior of the roll, the roll shell is of such material and/or shaped so that beginning from the central region, the rigidity of the roll shell decreases toward the axial ends of the roll shell in such a way that loading resulting from the dead weight of the roll shell and the operational loading on the roll shell causes desired curvature of the bending line of the roll shell. The roll shell may be affixed to rotate with the carrier or rotatable with respect to the carrier. The rigidity adjustment of the roll shell is obtainable either by varying the wall thickness of the roll shell and/or by selective inclusi…