Mandrel locking unit for printing roller mandrels in a rotary printing machine

US7900559B2 · kind B2 · utility

Assignee

• Windmöller & Hölscher KG · DE

Inventors

• Georg Rasch · Schömberg, DE
• Hans-Joerg Mieseler · Ibbenbüren, DE

Key dates

• Filing date: May 18, 2004
• Grant date: Mar 8, 2011
• Expiry date: Sep 16, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41P2227/21
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A mandrel-locking unit for a rotary printing machine has a mandrel-mounting element that surrounds print roller mandrels in an inner bearing for mounting a mandrel-supporting surface and into which the mandrel-mounting element can be slid such that the mandrel-supporting surface is released by the sliding movement. The unit has a pressurizing medium cylinder that provides the force required for the sliding movement and a piston, which delimits a pressure chamber of the pressurizing medium cylinder at a boundary surface and which is in contact with the mandrel-mounting element at a connecting point and conveys to the mandrel mounting element the pressure required for the sliding movement. A feature of the unit is that the distance between the boundary surface and the connecting point is smaller than the maximum stroke of the piston in the pressurizing medium cylinder.