Centrally controlled automatic device for feeding single sheets

Details Centrally controlled automatic device for feeding single sheets Centrally controlled automatic device for feeding single sheets

1991-03-01

1992-06-30

Olszewski, Robert P.

Sheet feeding or delivering

Feeding

Separator and conveyor

271100, B65H 510

Patent

active

051256380

ABSTRACT:
A centrally controlled automatic device for feeding single sheets or the like in a machine for packaging signatures, newspapers or the like in a continuous film of thermoplastic material, comprising a frame, container for containing sheets stacked one on the other for feeding, a separator for separating at least one sheet from the bottom of the container, an extractor for extracting at least one sheet separated by the separator, and an evacuator for evacuating at least one sheet once extracted, wherein the extractor consists of a lower conveyor band on which a presser roller is caused to engage with rocking movement, the rocking movement being provided by a first cam mechanism which causes the pressure roller to move from a first detached position to a second position of engagement with the lower conveyor band as soon as the separator has gripped an initial portion of the sheet and moved it from the bottom of the container onto the lower conveyor band, there also being provided a second cam mechanism arranged coaxially to the first cam mechanism to operate the separator, the cam mechanism being driven by single central drive shaft, which rotates the extractor.

REFERENCES:
patent: 1806102 (1932-11-01), Jahne
patent: 3497205 (1970-02-01), Harrison
patent: 4155546 (1979-05-01), Jacobs
patent: 4369962 (1983-01-01), Spiro
patent: 4484735 (1984-11-01), Goi

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