Signature feeder having improved signature extraction

Sheet feeding or delivering – Feeding and delivering – Separator and conveyor

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Details

271 6, 271 94, 271161, 271188, 271209, B65H 502

Patent

active

049077910

ABSTRACT:
A sheet feeder has a supply station wherein signatures fresh from the printing press are stacked. The stack is supported such that the signatures are in an arched, non-planar configuration. A sheet stripper extracts signatures successively from the stack and feeds them in a constant stream to a transfer conveyor. The stripper grips the sheets with a suction device which applies a constant but locally intermittent vacuum. The transfer conveyor carries the signatures to a delivery station. The delivery station includes fingers which arch the signatures. Arching the signatures in the supply and delivery stations prevents rolling of the signatures.

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