Shingling and stacking of conveyed sheet material with pre-shing

Details Shingling and stacking of conveyed sheet material with pre-shing Shingling and stacking of conveyed sheet material with pre-shing

1984-10-24

1986-07-08

Schacher, Richard A.

Sheet feeding or delivering

Delivering

By endless conveyor

271151, 271183, 271270, B65H 2966

Patent

active

045989010

ABSTRACT:
A conveyor system wherein sheets (10) are conveyed from a cutter (9) or the like at a given speed, are increased in speed before passing through a vacuum conveyor shingling section (5), are slowed down at the shingling section and then normally proceed at the slowed-down speed to a stacker (8) which is adapted to stack a fixed number of sheets before discharging a stack. The sheets are basically handled in accordance with the device disclosed in U.S. Pat. No. 4,200,276. To prevent scattering of the sheets during shingling due to high input conveyor speeds and the like, the vacuum conveyor shingling section (5) includes a second (or pre-shingling) conveyor (38) upstream of the original shingling conveyor (15). The pre-shingling conveyor operates at a relatively high rate of speed while the original shingling conveyor operates at a relatively low rate of speed (which nevertheless may be as high as the device of the patent) relative to the sheet input speed. A setting control (40) is provided to pre-set the pre-shingler conveyor speed in correlation with the input speed of the sheets and the length of the individual sheets. The pre-set pre-shingler conveyor speed remains constant during operation of the device. Conveyors (15, 6, 7) downstream of the pre-shingling conveyor (38) run at speeds which are correlated to the speed of the supplemental pre-shingling conveyor (38).

REFERENCES:
patent: 2819079 (1958-01-01), Beaulieu
patent: 4200276 (1980-04-01), Marschke

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