Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By longitudinally respacing successive articles in stream
Patent
1975-11-04
1977-08-16
Blunk, Evon C.
Conveyors: power-driven
Conveyor system for arranging or rearranging stream of items
By longitudinally respacing successive articles in stream
198781, 198783, B65G 1302
Patent
active
040421015
ABSTRACT:
An accumulating live roller conveyor in which articles of different sizes and weights may be stopped when movement of a lead article is blocked. The accumulation is in cascading fashion, and release may either be cascading or simultaneously. The conveyor comprises a series of article-supporting rollers with a powered endless belt having a driving run over one side of said rolls. A plurality of frames fitted with pressure rolls are disposed above the belt, one or more frames corresponding to an accumulation zone. Normally, the rolls hold the belt in driving contact with the article-supporting rollers. A plurality of sensing rolls are each connected to a frame in an upstream zone so that an article engaging a sensing roll will hold the corresponding frame in an upper position, eliminating belt pressure in that zone to stop an article. Following articles will be likewise stopped. In a preferred embodiment, the pressure rolls are eccentrically mounted to create oscillating frame motion when driving; the sensing roll in this embodiment is connected to the frame by lost motion means.
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Krammer Robert
McClellan Michael T.
Blunk Evon C.
Standard Conveyor Company
Watts Douglas D.
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