Calender arrangement and a deflection controlled roll and method of operating them

US6497177B2 · kind B2 · utility

Assignee

• Eduard Kusters Maschinefabrik GmbH & Co. KG · DE

Inventors

• Bernhard Brendel · Norderstedt, DE
• Peter Svenka · Grefrath, DE

Key dates

• Filing date: Nov 7, 2001
• Grant date: Dec 24, 2002
• Expiry date: Nov 7, 2021

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21G1/022
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A calender arrangement includes end rolls that are in the form of deflection controlled rolls having an internal stroke. One of the end rolls comprises at least one stop element that is in the form of a hydraulic positioned hydrostatic element which, together with the internal wall of the roll sleeve, defines a gap. When a constant throughput of hydraulic medium is fed in, an equilibrium of forces is produced, at which equilibrium the roll sleeve is positioned. The pressure built up in the process is a measure of the positioning forces. Small departures from the target position are permitted without control intervention.