Software control of a weigh and feed transport in a weighing mod

Details Software control of a weigh and feed transport in a weighing mod Software control of a weigh and feed transport in a weighing mod

1992-07-31

1993-10-26

Miller, Jr., George H.

Weighing scales

With weigher loading or unloading means

177 2515, G01G 1900, G01G 1940

Patent

active

052568350

ABSTRACT:
A transport apparatus for a weighing module includes a scale which has a deck connected to a scale base for weighing an object placed on the deck. The deck has slots for accommodating dual thickness belts which are arranged below the deck to be in substantial registration with the slots. The belts are positioned with respect to the slot such that in a home position a thinner section of the belt does not protrude through the slot whereby the transport means does not interfere with weighing of the object on the deck. When the belts are actuated, the dual thickness belts move so that a thicker section of each belt protrudes through the slot as the belts are being driven to thereby lift the object from the deck onto the thicker section of the belt to transport the object on the belt. In order to provide a safety factor in the event that something is caught in the belts in order to detect problems in the operation of the belts, the belts are monitored using a photodetector for measuring the actual travel time of the belt and comparing it to an expected time. The detector makes use of the slots in the belt to check the transitions between slot and tooth.

REFERENCES:
patent: 4049068 (1977-09-01), Kavanagh et al.
patent: 4844188 (1989-07-01), Pirc et al.
patent: 4903788 (1990-02-01), Cordery et al.
patent: 5109937 (1992-05-01), Kipp
patent: 5190115 (1993-03-01), Dolan et al.

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