Abstract:
Apparatus and method for automatically evaluating articles, particularly citrus fruits, on the basis of the uniformity and non-uniformity of their transparency to X-rays and selectively separating them into different grades according to such evaluations, the fruit being oriented and carried by a conveyor in a path between an X-ray source and X-ray detectors positioned to straddle the fruit core portion, the signals from the detectors being carried in an internal quality computer controlled by timing sensors responsive to fruit movement through the X-rays, wherein the percentage of internal damage is computed for each fruit, after which the fruits are successively separated into different predetermined grades according to their respective damage evaluations.
Abstract:
Round articles are rolled in stages by a series of conveyor units arranged edge to edge that rock about axes perpendicular to the direction of travel. The conveyor units are rocked synchronously between rearward and forward positions and the conveyor units are formed with seats adjacent their back edges to receive new articles on each cycle. A given round article that rolls onto the seat of a conveyor unit when the unit is in its rearward position rolls forward on the unit as the unit rocks to its forward position. Then as the unit rocks back to its rearward article-receiving position, the given article is boosted onto the seat of the next forward conveyor unit. Thus, normally all of the articles on the conveyor advance by one conveyor unit on each cycle.