Inspection method for cylindrical objects uses two abutting conveyor belts with objects rotated for inspection in gap between abutting belt sections

摘要

A source of feeds objects (1) into a guide (4) which leads to a point above a conveyor (5). The conveyor includes a pair of belts stretched over two parallel guides (6). The belts move in the same direction, but one turns down into the space between the parallel guides whilst the other emerges from this point. The belts, which be formed from a single folded belt, are at a common angle to the guides and move at a common speed. As the cylindrical objects arrive at this junction between the belts, they are rotated and may be inspected on all surfaces by an optical device mounted above the belt.