Apparatus and method for accumulating sheets

Details Apparatus and method for accumulating sheets Apparatus and method for accumulating sheets

B - Operations, Transporting

65

H

B65H 39/10 (2006.01) B65H 29/12 (2006.01) B65H 29/16 (2006.01) B65H 29/20 (2006.01) B65H 29/24 (2006.01) B65H 29/70 (2006.01) B65H 31/30 (2006.01)

Patent

CA 2472870

An accumulator device with a downward angled input transport. Downstream, an accumulating receptacle receives sheets. The accumulating receptacle has an upper guide and a lower guide forming a horizontal accumulating channel. Dump rollers act as a stop during sheet accumulation, and as a transport for removing completed accumulations from the sheet accumulating device. A rear portion of sheets buckle downward into a trap arrangement below the input rollers. Preferably, the upper guide of the accumulating channel comprises a continuously rotating belt to urge accumulating sheets against the dump rollers. Also, a positive air device may be used to assist in the buckling of the rear portion of the sheets. To assist in handling large collations, when a sheet arrives at the dump rollers the advance by a small predetermined incremental displacement slightly shingling the sheets to maintain positive control for later reliable discharge.

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