Differential reflectivity method and apparatus for sorting strip items

摘要

Apparatus for sorting slender elongate items, some of which are defective, includes a viewing area with sensing means that sense defects in the items and produces a signal when a defect is sensed, and a removal area with removal means that operate in response to the signals from the sensing means to remove defective items. A conveyor having upstanding walls defining a series of longitudinal side by side channels receives a flow of randomly oriented items and places them in substantially singulated end to end alignment. An endless belt conveyor is arranged as a longitudinal continuation of the first conveyor and has a series of troughs aligned with the series of channels for receiving the substantially singulated and aligned items from the channels of the first conveyor and for carrying the received items through the viewing area and into the removal area in substantially singulated end to end alignment.