Device for singly separating or singling out stacked printing forms

US5253858A · kind A · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventor

• Martin Grieve · Neckargemünd, DE

Key dates

• Filing date: May 20, 1992
• Grant date: Oct 19, 1993
• Expiry date: May 20, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H3/0833
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A device for singly separating stacked sheet-like elements, includes at least one sucker for applying vacuum, the sucker being deformable for varying the volume thereof, and a vertically and rotatably displaceable holder formed with an inner air duct and having a lower end at which the sucker is disposed. Further included are a closure device controllable in accordance with a given operating cycle for opening and closing the air duct, a drive device for vertically and rotatingly displacing the holder, a support operatively coupled with the drive device and having a guide device for guiding the displaceable holder substantially perpendicularly to a suction surface of the sucker and between respective stops at spaced-apart locations of the guide device, and a resilient device for biasing the holder in a direction towards a lower end position thereof. Moreover, the holder is formed with a sensing surface at the lower end thereof and within the deformable sucker for cooperating with an upper surface of a respective uppermost sheet-like element of a stack of sheet-like elements.