Material or article handling – Apparatus for moving intersupporting articles into – within,... – Unstacking apparatus
Patent
1994-10-24
1996-03-12
Huppert, Michael S.
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Unstacking apparatus
4147976, 271 35, 271125, 271 1004, B65G 5906
Patent
active
054981239
ABSTRACT:
A bottom feeding mechanism comprises a feed roller assembly and a conveyor belt assembly functioning as a first stage gate and a set of snubber rollers functioning as a second stage gate. The feed roller assembly comprises a pair of feed rollers fixed on a shaft rotatably mounted on feeding bases and the conveyor belt assembly is situated in between the feed rollers and above the feed roller shaft. Apexes of the feed roller and the conveyor belt define the medium passage. The feed roller and the conveyor belt can only move unidirectionally, which are controlled by a driving means through one-way clutches. The snubber rollers are rotatably mounted on a bracket in an overlapping relation, i.e. one is over the other. Each snubber roller is independently driven. The upper snubber roller is driven by a torque-limited slip clutch device. When a medium is fed to hit the gate, vertical component of momentum of the feeding medium forces the conveyor belt deflecting the leading edge and opens up the gap to its proper opening to allow one piece of media to pass through. Should more than one piece pass through the first stage gate, the second stage gate will virtually eliminate the possibility of more than one piece passing through this gate, i.e. frictional torque between two piece is less than slip clutch torque, the upper roller rotates in the direction same as the lower snubber roller and drives the top piece backwards until it emerges from the roller set.
REFERENCES:
patent: 3664660 (1972-05-01), Runzi
patent: 3874652 (1975-04-01), Bilbrey
patent: 5006042 (1991-04-01), Park
patent: 5110107 (1992-05-01), Bieber
patent: 5295675 (1994-03-01), Hain
Hess Douglas A.
Huppert Michael S.
Macro Technology International Inc.
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