Horizontal staging hopper

Details Horizontal staging hopper Horizontal staging hopper

1992-03-27

1993-05-18

Schacher, Richard A.

Material or article handling

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

Unstacking apparatus

271 311, 271150, 271157, B65G 5701

Patent

active

052115291

ABSTRACT:
A staging hopper for supplying packaging blanks includes a first conveyor positioned downstream of a second conveyor. The first conveyor supports and periodically transfers packaging blanks in a primary group of blanks to a blank delivery position. A second conveyor supports and intermittently transfers packaging blanks in a secondary group of blanks onto the first conveyor. The top edges of the secondary group of blanks rest at an angle against the primary group of blanks to define a longitudinal gap between the lower edges of the blanks in the primary and secondary groups. Photosensors are provided to detect the presence and absence of packaging blanks within the longitudinal gap. In addition to advancing the primary group of blanks, the first conveyor advances the forward blanks in the secondary group across the gap toward the primary group. The photosensors detect the presence of these blanks as their lower edges move across the gap. Upon failure to detect any packaging blanks within the gap, the photosensors activate the second conveyor to move successive forward blanks in the secondary group onto the first conveyor.

REFERENCES:
patent: 2161124 (1939-06-01), Babicz
patent: 3391806 (1968-07-01), Geis et al.
patent: 3598399 (1971-10-01), Cottrell
patent: 4697973 (1987-10-01), Hahn et al.
patent: 4708568 (1987-11-01), Odorici
patent: 4919589 (1990-04-01), Krappitz
patent: 4934682 (1990-06-01), Rece et al.
patent: 5131899 (1992-07-01), Nagahashi
patent: 5161792 (1992-11-01), Wood

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