Device for transporting sheets

US5927709A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventor

• Martin Greive · Heidelberg, DE

Key dates

• Filing date: Sep 27, 1996
• Grant date: Jul 27, 1999
• Expiry date: Sep 27, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H29/22
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

In a device for transporting sheets between a pair of transport rollers of a delivery of a printing machine, each of the rollers feature, along its respective length, several roller sections having greater diameters and roller sections having smaller diameters, with roller sections of one roller having greater diameters facing roller sections of the other roller having smaller diameters in order to provide the sheets, in longitudinal direction, with a transversely extending corrugated profile for the purpose of stiffening the sheets. Due to the fact that either roller sections of roller having greater diameters or roller sections with smaller diameters are mounted so as to be freely rotatable and that, when rotating the respective other roller, the roller sections are entrained by driven opposite roller sections of the respective other roller, all roller surfaces have the same speed so that the surfaces of the sheets are not damaged when being transported onto a delivery pile.