Patent ID: 9335278
Filing Date: 2016-05-10
CPC Classification: G01B,G01N,G06T

Claim Text:
1. Inspection equipment for screw part of bottle-can having a mouth section provided with a curl portion in which an opening edge thereof is rolled up outward and the screw part for fitting a cap by threads below the curl portion for attaching the cap with a liner, the inspection equipment inspecting a shape of the screw part of the mouth section by imaging an imaging area which is set so as to include a part of the mouth section while rotating the bottle-can around a can-axis, the inspection equipment comprising: a rotating device which holds and rotates the bottle-can around the can-axis; a thread-illumination device which irradiates illumination light toward the screw part of the bottle-can in the imaging area diagonally upward from a radially outside and can-axially lower part; an imaging device which continuously obtains inspection images including reflected light of the illumination light at the imaging area; and an thread-inspection device which inspects the screw part including a thread-starting part by detecting the thread-starting part of the screw part based on an imaging result of the reflected light.