Method of cleaning a cylinder of a rotary printing press

US5755159A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Rudolf Mitze · Dietzenbach, DE
• Horst Muller · Cologne, DE

Key dates

• Filing date: Oct 31, 1996
• Grant date: May 26, 1998
• Expiry date: Oct 31, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F35/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method for cleaning cylinders of a rotary printing press having washer and suction devices and an adjacently mounted dryer which shortens the down time during the cleaning operation and at the same time satisfies safety requirements. At the beginning of a cleaning process, the dryer is reduced from its normal operating output level to a predetermined lower operating output level which eliminates the risk of combustion with cleaning fluid vapors. At the end of the cleaning process, the operating output of the dryer is increased from its reduced level to its normal operating level in a significantly shortened period of time, as compared to conventional practice, resulting in reduced down time for the printing machine during the cleaning operation.