Apparatus for slowing down and preventing edge damage on moving

Details Apparatus for slowing down and preventing edge damage on moving Apparatus for slowing down and preventing edge damage on moving

1981-05-28

1984-03-13

Stoner, Jr., Bruce H.

Sheet feeding or delivering

Delivering

By endless conveyor

271183, 271216, B65H 2968

Patent

active

044363028

ABSTRACT:
Apparatus for the shingling of cut sheets of paper as they pass between conveyance on a high-speed tape conveyor and a low-speed tape conveyor is provided by a two-stage slowdown arrangement. At the first stage, a slowdown mechanism, comprising two rolls arranged respectively above and below each sheet passing through a drop-off area from the high-speed conveyor to the low-speed conveyor, serves to engage the tail portion of the sheet in a nip such that the sheet is slowed down to a speed approximately 30 to 40% of the speed of the high-speed conveyor. In this manner, the lead edge of a next succeeding sheet overlaps with the trailing edge of the nipped sheet in a drop-off area from the high-speed tape conveyor. Downstream of the slowdown rolls is a stop roll which serves to reduce the speed of the immediately preceding sheet to the speed of the low-speed tape conveyor, which is still slower than the speed of the slowdown rolls such that the sheet passing through the nip of the slowdown rolls further overlaps with the immediately preceding sheet. The possibility of lead edge damage to the sheets engaging with a stop roll for shingling is effectively eliminated.

REFERENCES:
patent: 3198046 (1965-08-01), De Angelo
patent: 3232605 (1966-02-01), Plummer et al.
patent: 3315956 (1967-04-01), Lyman
patent: 3554534 (1971-01-01), Grody
patent: 3942786 (1976-03-01), Lauren
patent: 4209956 (1980-07-01), Clayson et al.
patent: 4221377 (1980-09-01), Bodewein et al.
patent: 4240856 (1980-12-01), Craemer et al.
patent: 4272069 (1981-06-01), Matthews

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