Device for singly separating or singling out stacked printing fo

Details Device for singly separating or singling out stacked printing fo Device for singly separating or singling out stacked printing fo

1992-05-20

1993-10-19

Bollinger, David H.

Sheet feeding or delivering

Feeding

Separators

271107, 271108, B65H 308

Patent

active

052538583

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.

REFERENCES:
patent: 3154306 (1964-10-01), Elliott et al.
patent: 3195941 (1965-07-01), Morey
patent: 4351518 (1982-09-01), Stievenart
patent: 4508331 (1985-04-01), Kashiwagi
patent: 4749219 (1988-06-01), Bolle, Jr. et al.
patent: 4784380 (1988-11-01), Eberle

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