| 摘要 |
A stream of cylindrical metal containers is fed into apparatus having a rotatable turret. The turret indexes each container past a driven wheel for imparting rotation thereto, and the rotating containers are scanned by a split flange detector. At the same or another point about the turret, a proximity detector disposed in close conjunction with the periphery of the rotating container detects any substantial runout of the periphery, indicating a dented container. Still another inspection station comprises a source of diffuse light directed against the sidewalls within a container, and a photosensor directed toward the container end for registering the intensity of reflected light. The light intensity is used as an indication of the presence (or absence) of coating material on substantial areas of the container interior. A compressed air nozzle downstream of the inspection stations is operated by an electrically-controlled valve in timed relationship with the various inspection apparatus to selectively discharge faulty containers from the container stream.
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