Unstacker for unstacking flat items, the unstacker including rea

Details Unstacker for unstacking flat items, the unstacker including rea Unstacker for unstacking flat items, the unstacker including rea

1993-09-24

1995-02-21

Kashnikow, Andres

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Unstacking apparatus

271 11, 271 12, 271 96, B65H 312, B65H 508, B65G 5902

Patent

active

053910516

ABSTRACT:
An unstacking apparatus including a first suction nozzle (7) and a second suction nozzle (8) that are disposed on one side of an alignment plate (3), a perforated endless belt (6) continuously advancing past the suction nozzles and the free face of the first item in a stack of items, a passage forming an outlet between the alignment plate and the belt, at least one sensor (17, 18, 19) disposed on the other side of the alignment plate, and a microcomputer (10) for actuating one of the nozzles in an unstacking cycle. A microcomputer is organized so as to detect that a first item in the stack is backwardly misaligned by monitoring the operation of one of the suction nozzles during the unstacking cycle, and so as to trigger a realignment cycle in response to such detection, during which realignment cycle the nozzles are actuated alternately.

REFERENCES:
patent: 3730514 (1973-05-01), Burkhardt
patent: 4030723 (1977-06-01), Irvine et al.
patent: 4357007 (1982-11-01), Mens Francsicus et al.
patent: 4451028 (1984-05-01), Holmes et al.
patent: 4701094 (1987-10-01), Courjaret et al.
patent: 5244343 (1993-09-01), Lockert
patent: 5290022 (1994-03-01), Sabatier et al.

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