Apparatus for separating and conveying sheet-like articles

Details Apparatus for separating and conveying sheet-like articles Apparatus for separating and conveying sheet-like articles

1986-03-12

1987-12-01

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separators

221259, 221268, 91402, 60594, B65H 324

Patent

active

047099127

ABSTRACT:
In order to accomplish the separation and further conveyance of the uppert sheet of a stack of sheets by the simplest possible means, an elastic friction finger resting with slight pressure on the uppermost sheet of the stack is provided, which is set into reciprocating motion in a direction (A-B) that is inclined by a certain angle (.alpha.) relative to the surface of the stack, the movement having a low amplitude and a relatively high frequency. The stack itself is inclined backward relative to the horizontal by a certain angle (.beta.). The drive of the friction finger may be effected by means of a bellows connected to a valveless pump, by a pneumatic cylinder, or by a crank drive. It is also possible to connect a pneumatic cylinder, provided with vent bores controlled by the piston, to a supply line that is at constant negative pressure or overpressure.

REFERENCES:
patent: 1230070 (1917-06-01), Gottschalk
patent: 2208299 (1946-07-01), Marcus
patent: 2467740 (1949-04-01), Haller
patent: 3513658 (1970-05-01), Okura
patent: 3910567 (1975-10-01), Songer
patent: 3966190 (1976-06-01), Grant
patent: 4167239 (1979-09-01), Bihler
patent: 4290593 (1981-09-01), Irvine
patent: 4591140 (1986-05-01), Illig et al.

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