Sheet feeder system and method for individually separating sheets

US5915682A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Hermann Ambuhl · Ostermundigen, CH
• Urs Fluhmann · Muri, CH
• Martin Greive · Heidelberg, DE
• Bernd Hermann · Wuppertal, DE
• Hans Johr · Kehrsatz, CH
• Peter Lehmann · Oebisfelde, DE
• Rudolf Luthi · Köniz, CH

Key dates

• Filing date: Nov 21, 1996
• Grant date: Jun 29, 1999
• Expiry date: Nov 21, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2801/21
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A sheet feeder system for a sheet-fed printing press includes a device for causing a sheet pile to sag at least partly in at least an upper region thereof, and at least two contact elements disposed in mutually spaced-apart relationship on an upper side of the sheet pile and having respective contact surfaces for pressing against the upper side of the sheet pile at least partly or temporarily, at least one of the contact elements being drivable so as to move the respective contact surfaces pressing against the upper side of the sheet pile towards and away from one another, respectively, for forming an interspace between the uppermost sheet of the sheet pile and a sheet immediately therebelow, and a method for individually separating sheets.