Apparatus for detecting defects on bottle mouth with screw...

Details Apparatus for detecting defects on bottle mouth with screw... Apparatus for detecting defects on bottle mouth with screw...

G - Physics

01

N

340/124.6

G01N 21/90 (2006.01)

Patent

CA 1272775

ABSTRACT APPARATUS FOR DETECTING DEFECTS ON BOTTLE MOUTH WITH SCREW THREAD An apparatus for detecting defects on a bottle mouth with a screw thread has an illuminating unit (10) for applying light to the mouth of a bottle under rotation; a photoelectric conversion unit (16) for photoelectrically converting a light transmitted image of the bottle mouth applied with light by the illuminating unit into electric signals; a defect detecting unit (24) for detecting a defect within a predetermined area in the light transmitted image photoelectrically converted by the photoelectric conversion unit, based on the brightness at predetermined at-least two points in each predetermined detection direction within the area; and a judge unit (26) for calculating the number of defects detected by the defect detecting unit and judging the presence of any defect of the bottle mouth based on the number of defects. The apparatus detects defect points from the light transmitted image of the bottle mouth and judges based on the number of defect points whether or not there is a defect of a bottle.

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