Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By longitudinally respacing successive articles in stream
Patent
1990-07-19
1991-12-10
Olszewski, Robert P.
Conveyors: power-driven
Conveyor system for arranging or rearranging stream of items
By longitudinally respacing successive articles in stream
198461, 198572, B65G 4731
Patent
active
050709950
ABSTRACT:
A feeder conveyor system for transferring randomly spaced products received from an input conveyor to precise locations within flites of a wrapper conveyor. A plurality of conveyors, prior to the wrapper conveyor, are independently driven by product positioning drive subsystems. Each product positioning drive subsystem associates products on its respective conveyor with target flites on the wrapper conveyor, and characterizes positional errors of the products on the conveyor relative to their associated target flites as being in one of a plurality of discrete positional error states representing a range of errors. The velocity of the conveyors controlled by the positioning drive subsystem as a function of the positional error state and the fill state of the associated target flite and flite previous to the target flite. A plurality of spacing conveyors are positioned upstream from the positioning conveyors and are independently driven by products spacing drive subsystems. The velocity of the spacing conveyors is controlled by the spacing drive subsystems as a function of state flags to space products at flite lengths with respect to one another. Overall operation of the positioning drive subsystems and spacing drive subsystems is controlled by a system processor.
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Hanson David J.
Schaffer Eric J.
Bidwell James R.
MTS Systems Corporation
Olszewski Robert P.
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