Method and device for contact-free retention of sheets

US6598874B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Peter Hachmann · Dossenheim, DE
• Uwe Tessmann · Schallstadt, DE

Key dates

• Filing date: Dec 5, 2001
• Grant date: Jul 29, 2003
• Expiry date: Jan 5, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2515/10
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method of retaining a sheet on at least one of a transfer cylinder and a guide surface of a sheet-guiding device in a sheet-processing machine by pneumatically activatable nozzles for producing an air cushion beneath the respective sheet, which comprises producing an air cushion by an air-pressure distribution resulting in air flows beneath the respective sheet, the air-pressure distribution being based virtually only on radially decelerated air flow, and being capable of retaining the respective sheet in position; and a retaining device for performing the method.