Sheet feeding or delivering – Delivering – Rotary conveyor
Patent
1974-09-09
1976-02-17
Spar, Robert J.
Sheet feeding or delivering
Delivering
Rotary conveyor
214 6H, 271 69, 271201, 271216, B65G 57112, B65H 2922
Patent
active
039386740
ABSTRACT:
A method of stacking corrugated paperboard blanks issuing from a corrugator that produces parallel streams of blanks from an advancing endless web by shingling the blanks from each of the streams and advancing them to lineally displaced stacking stations where a predetermined number of blanks are accumulated and then interrupting the flows of blanks for removing stacks of blanks from the stacking stations. Suitable apparatus for performing the method includes vertically displaced, parallel shingling conveyors which advance the shingled blanks to lineally displaced stacking platforms and a gating apparatus at the downstream end of each conveyor to interrupt the flow of blanks while the stacks are removed from the platforms. The output end of the lower conveyor rises to compensate for the increasing height of the stack on its associated platform while the other platform falls to similarly compensate for the increasing height of the stack thereon. The input end of each conveyor falls beneath the level of incoming blanks while the conveyors are stopped during removal of the stacks so that storage stacks are temporarily formed on the conveyors until they resume advancement of the blanks to the stacking platforms. The apparatus preferably includes an accumulator stacker laterally aligned with the lower stacking platform for forming final stacks of blanks consisting of smaller stacks removed from the lower platform.
REFERENCES:
patent: 2272045 (1942-02-01), Dudley
patent: 2660432 (1953-11-01), Wilske et al.
patent: 2789709 (1957-04-01), Shields
patent: 2951575 (1960-09-01), Gordon et al.
patent: 3084812 (1963-04-01), Johansson
patent: 3527460 (1970-09-01), Lopez
patent: 3643940 (1972-02-01), Lopez
patent: 3756591 (1973-09-01), Muller
patent: 3791269 (1974-02-01), Sawada
Kroeze Hendrik J.
Scheij Hans
Brumback Oscar B.
Dent Boyce C.
Koppers Company Inc.
Paperner Leslie J.
Spar Robert J.
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