Belt drive for a machine for processing flat printing materials

US6354203B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Dieter Bäcker · Sandhausen, DE
• Ralf Weiser · Ladenburg, DE
• Roland Hirth · Münstermaifeld, DE
• Richard Mack · Kennesaw, US

Key dates

• Filing date: Mar 7, 2001
• Grant date: Mar 12, 2002
• Expiry date: Mar 7, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2601/324
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A belt drive for a machine for processing flat printing materials includes an endless belt revolving during operation, a roller about which the belt is partially looped, a frame with respect to which the roller is adjustable between a working position, wherein the roller keeps the belt tensioned, and a position moved away from the working position, wherein the belt is untensioned, and a spring device for biasing the roller into the working position thereof. Also included are a double crank by which the roller is articulated with the frame, and a stop which, due to a change in position of the double crank from a position corresponding to the working position of the roller into a position corresponding to the moved-away position of the roller, is carried out to a given extent beyond a dead-center position of the double crank, prevents a change in position beyond the given extent; and a machine for processing flat printing materials, which includes the belt drive.