Suction type sheet feeding device

Details Suction type sheet feeding device Suction type sheet feeding device

1990-09-12

1991-11-12

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separator and conveyor

271107, 294 641, B65H 308

Patent

active

050641832

ABSTRACT:
A suction type sheet feeding device which attracts an uppermost sheet of a sheet stack to a suction cup by a negative pressure, and transfers the attracted sheet to a predetermined position. For producing the negative pressure, a bellows or accordionlike enclosure is employed. In accordance with axial shrinkage and expansion of the bellows, the negative pressure is produced. The bellows is in fluid communication with the suction cup. Improvement is also made on a cleaning arrangement for cleaning the suction cup, and on the structure of the suction cup unit.

REFERENCES:
patent: 1367528 (1921-02-01), Anderson
patent: 2163441 (1939-06-01), Von Hofe
patent: 2840270 (1958-06-01), Gore
patent: 3837638 (1974-09-01), Anderson
patent: 4351518 (1982-09-01), Stievenart
patent: 4355797 (1982-10-01), Graef
patent: 4513957 (1985-04-01), Schaefer
patent: 5005818 (1991-04-01), Hayashi

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