Apparatus for detecting flaws in light transmissive tubing including a plurality of diametrically opposed light sources

Abstract

Abstract AN APPARATUS FOR CONTINUOUSLY DECTING AIR LINES IN GLASS TUBING WHICH IS MOVING IN ITS LONGITUDINAL DIRECTION. FOUR IMAGES DISSECTOR CAMERA TUBES ARE PROVIDED, EACH HAVING A LIGHT SOURCE ASSOCIATED THEREWITH. EACH RESPECTIVE CAMERA TUBE AND LIGHT SOURCE IS DISPOSED ON A LIGHT AXIS EXTENDING TRANSVERSELY THROUGH THE LONGITUDINAL AXIS OF THE GLASS TUBING, THE CAMERA TUBE BEING DISPOSED TO VIEW ONE SIDE OF THE TUBING AND THE LIGHT SOURCE BEING DISPOSED ON THE OTHER SIDE. EACH CAMERA TUBE HAS AN ELONGATED NARROW APERTURE STANDING IN A DIRECTION PARALLEL WITH THE GLASS TUBING AXIS AND IS ARRANGED FROM SCANNING IN A DIRECTION PERPENDICULAR TO THE APERTURE. THE LIGHT SOURCE IS ARRANGED COMPLETELY AND GROSSLY TO ILLUMINATE THE GLASS TUBING WITH DIFFUSE, VISIBLE LIGHT IN AN AREA LONGER THAN THE SCAN PROVIDED BTT THE CAMERA TUBE AND WIDER THAN THE WIDTH OF THE APERTURE WHEN OPTICALLY PROJECTED THROUGH THE GLASS TUBING TO THE LIGHT SOURCE. THE FIRST TWO OF THE CAMERA TUBES AND LIGHT SOURCES ARE ARRANGED WITH THEIR RESPECTIVE LIGHT AXES LYING IN A COMMON PLANE AND ANGULARLY DISPLACED BY NINETY DEGREES. THE OTHER TWO CAMERA TUBES AND LIGHT SOURCES ARE DISPOSED WITH THEIR LIGHT AXES IN ANOTHER COMMON PLANE LONGITUDINALLY SPACED FROM THE PLANE OF THE FIRST TWO CAMERA TUBES AND LIGHT SOURCES, THE LIGHT AXES OF THE SECOND TWO TUBES AND LIGHT SOURCES LIKEWISE BEING ANGULARLY DISPLACED BY NINETY DEGREES, EACH OF THE CAMERA TUBES BEING ARRANGED TO VIEW A DIFFERENT QUADRANT OF THE PERIPHERAL SURFACE OF THE GLASS TUBING.

Inventors

• 👤 Louis E Wuellner
• 👤 Francis J Kitrush
• 👤 Donald Holloway
• 👤 Saleem N Bonahoom

Bibliographic Details