Impression cylinder arrangement of an intaglio machine for a web-fed printing

US5092241A · kind A · utility

Assignee

• De La Rue Giori S.A. · CH

Inventors

• Norbert A. Feser · Dossenheim, DE
• Wolfgang Scheller · Oberpleichfeld, DE

Key dates

• Filing date: Mar 28, 1991
• Grant date: Mar 3, 1992
• Expiry date: Mar 28, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F13/22
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The arrangement has a device for cooling the impression cylinder (2) with a plurality of continuous metal belts (6) which run over two drums (4, 5) which partially wrap the impression cylinder (2) and are carried along by the latter during its rotation. These metal belts discharge the heat arising at the surface of the impression cylinder during the printing operation and are themselves cooled by the fact that one of the two drums (4) is constructed as a hollow cooling drum through which a cooling means flows. The drums (4, 5) are mounted in an adjustable frame (7) and, when the printing machine is switched off, can be removed from the impression cylinder (2) to the extent that the latter is not contacted by the metal belts (6).