DEVICE FOR INSPECTING NECK FINISH OF METAL BOTTLE

摘要

Inspection equipment for mouth section of bottle-can, including: a rotating device which holds and rotates the bottle-can around a can-axis; a first illumination device which irradiates a first illumination light toward the curl portion in an imaging area; a second illumination device which irradiates a second illumination light having a different light color from that of the first illumination light toward the curl portion from an opposite side to the first illumination light with the imaging area therebetween; a third illumination device which irradiates a third illumination light having a different light color from that of the first illumination light and the second illumination light along an intersecting direction with the first illumination light and the second illumination light; an imaging device which is disposed toward the imaging area and obtains an inspection image including reflected lights at the curl portion; and an asperity-recognition device which detects an edge position of the curl portion based on the reflected light of the third illumination light, specifies the curl portion by referring the edge position, and detects the asperity based on imaging results of the reflected lights of the first illumination light and the second illumination light existing in the inspection image.