Suction table for conveying printed sheets

US5139253A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Andreas Böhme · Koblenzer Straße, DE
• Peter Mayer · Neumarkt an der Ybbs, AT
• Valentin Gensheimer · Frankfurt am Main, DE
• Hanns-Otto Haas · Heusenstamm, DE
• Hans Schwerdter · Obertshausen, DE
• Bert Cappel · Mühlheim, DE

Key dates

• Filing date: Apr 23, 1991
• Grant date: Aug 18, 1992
• Expiry date: Apr 23, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2406/3223
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A conveying cable for conveying sheets includes a suction chamber with a supporting surface defining a shallow groove having a plurality of suction openings therein over which a perforated suction belt moves. A plurality of vent openings separately communicating with atmosphere are disposed adjacent the belt edges to prevent the sheets from being sucked against the table surface. The perforations in the suction belt preferably take the form of staggered slots which leave imperforate zones free along the center and adjacent the edges of the belt to help reduce undesirable belt stretching and the suction openings in the supporting surface increase in size adjacent the delivery end of the table.