Material or article handling – Apparatus for moving intersupporting articles into – within,... – Unstacking apparatus
Patent
1993-08-18
1994-10-04
Skaggs, H. Grant
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Unstacking apparatus
4147972, 271 6, B65H 300
Patent
active
053520858
ABSTRACT:
A sheet transfer method for carrying a predetermined number of sheets from a destacking position to a restacking position by a vertically and horizontally movable transfer unit incorporating an entry-conveyor, a mid-conveyor, and an exit-conveyor. In this method, at the time of destacking a pile from the remaining stack, the advance of the transfer unit from one end to the other end of the stack, and the rotation of the pair of the entry-conveyor and mid-conveyors are concurrently effected substantially at the same speed, but in directions opposite to each other until the pile is progressively supported on the mid-conveyor. After the arrival of the transfer unit at the restacking position, the retraction of the transfer unit toward the destacking position, and the actuation of the pair of the mid-conveyor and exit-conveyor are concurrently effected substantially at the same speed, but in directions opposite to each other until the pile is clear of the transfer unit.
REFERENCES:
patent: 3209924 (1965-10-01), Hawkes
patent: 3209931 (1965-10-01), Hawkes
patent: 4055258 (1977-10-01), Schneider
patent: 4314696 (1982-02-01), Graef
patent: 5238350 (1993-08-01), Krieg et al.
Koone Ervin P.
Sargent Max L.
Fuji Photo Film, Inc.
Skaggs H. Grant
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