EP 0194511 A3 19880107 - DEVICE FOR REPEATEDLY SEPARATING AND CONVEYING THE TOP SHEET OF A PILE OF SHEETS OR SHEET-LIKE ARTICLES
Title (en)
DEVICE FOR REPEATEDLY SEPARATING AND CONVEYING THE TOP SHEET OF A PILE OF SHEETS OR SHEET-LIKE ARTICLES
Publication
Application
Priority
DE 3508736 A 19850312
Abstract (en)
[origin: US4759537A] In order to be able in a simple manner to supply one or more suction pick-up devices periodically moved relative to the surface of a stack with driving energy, the suction pick-up device is connected to an air volume or source having substantially constant negative pressure over overpressure, and a valve assembly that periodically connects the suction pick-up device to the outside air. The valve assembly is incorporated in the connecting line between the suction pick-up device and the air volume. The valve assembly may be embodied with a control piston that is subject to the action of a restoring force, by a pneumatic multi-way valve having a regulattable frequency, or by a magnetic valve connected to a regulattable frequency generator. With the aid of a regulating device for the cross section of the vent opening, it is possible to generate an amplitude of the suction pick-up device movement that becomes progressively smaller from stroke to stroke after the movable suction pick-up device has been switched on, until it attains a complete standstill.
IPC 1-7
IPC 8 full level
B65H 3/08 (2006.01)
CPC (source: EP US)
B65H 3/0883 (2013.01 - EP US); B65H 3/0891 (2013.01 - EP US)
Citation (search report)
- [Y] EP 0121803 A1 19841017 - FRAUNHOFER GES FORSCHUNG [DE]
- [Y] DE 2847413 A1 19800612 - EXNII KUZNETSCHNO PRESSOVOGO M
- [AD] DE 3308867 C1 19840823
- [A] DE 2504698 A1 19760819 - KUHNKE GMBH KG H
- [A] DE 2742652 A1 19790329 - KUHNKE GMBH KG H
- [A] DE 2001763 A1 19700903 - STROEMUNGSMASCH VEB
- [A] US 2995359 A 19610808 - GULICK KENNETH H
Designated contracting state (EPC)
AT BE CH FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0194511 A2 19860917; EP 0194511 A3 19880107; DE 3508736 A1 19860925; DE 3508736 C2 19871112; JP S61229732 A 19861014; US 4759537 A 19880726
DOCDB simple family (application)
EP 86102497 A 19860226; DE 3508736 A 19850312; JP 5350386 A 19860311; US 83904886 A 19860312