Sheet feeding or delivering – Feeding – Separator and conveyor
Patent
1981-02-17
1983-01-25
Stoner, Jr., Bruce H.
Sheet feeding or delivering
Feeding
Separator and conveyor
271 98, 271100, 271103, 271107, B65H 308
Patent
active
043699626
ABSTRACT:
An apparatus for feeding a single sheet from the bottom of a stack of sheets to a station for performing subsequent operations on the sheet. The apparatus is comprised of a magazine to receive a stack of sheets having a bottom support and upstanding walls, the bottom support having an opening therein through which the lower most sheet can be removed. A suction nozzle is provided below the magazine opening and a vacuum surface is provided below the suction nozzle. A first pivot arm is attached to the suction nozzle and a second pivot arm is attached to the vacuum surface. A sheet receiving and feeding apparatus below the magazine receives and feeds the sheet to the station which performs the subsequent operation on the sheet. The pivot arm is pivoted to (i) raise the suction nozzle to engage the surface of the lower most sheet, and subsequently (ii) lower the suction nozzle to engage the bottom surface of the sheet with the vacuum surface. The second pivot arm is pivoted to (i) move the vacuum surface towards the receiving and feeding apparatus for receipt of the sheet, and (ii) return the vacuum surface to the position below the suction nozzle and magazine. A first and second vacuum are provided for, respectively, applying the vacuum to the suction nozzle and to the vacuum surface.
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