Article stacking machine

Sheet feeding or delivering – Delivering – With transfer means between conveyor and receiver

Patent

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Details

271220, B65H 2946

Patent

active

044743661

ABSTRACT:
A stacking machine stacks sheet-like articles such as tickets, labels, cards, etc. A pair of transport belts move the articles to a stacking area in front of a pair of continuously reciprocating pusher plates. One or more pusher feet on each pusher plate apply a pushing force to each article for pushing it onto a stack that accumulates in the stacking area. The pusher feet are pivotally secured to the pusher plates so they can freely rotate between an operative position and an inoperative position. The articles are fed to the pusher plates by pressure rollers for applying an upward force to the articles to move them in series into a stacking position. Any contact between the pusher feet and the articles being moved by the pressure rollers will move the pusher feet into the inoperative position in which they are disabled from applying a pushing force, even during the forwardmost stroke of the pusher plates. When the article is released to the stacking position by the pressure rollers, and the pusher feet have automatically rotated under their own weight to the operative position during a return stroke of the pusher plates, the operative pusher feet can then push the article onto the stack during the next forward stroke of the pusher plates. Spring-biased gates on opposite sides of the pusher plates act as a stop to prevent each article from springing back into the pusher area and blocking the entrance of the forthcoming articles.

REFERENCES:
patent: 3182821 (1965-05-01), Parker
patent: 3188945 (1965-06-01), Renauer
patent: 4068839 (1978-01-01), Bullock
patent: 4172531 (1979-10-01), Muller

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