DEFECT INSPECTION METHOD FOR DEFECT OF BOTTLE NECK OPENING TOP

摘要

PURPOSE: To provide an inspection method for a defect on a bottle neck opening top, having the capability of automatically and continuously inspecting a defect such as a top extrusion, a top flow, a bubble, a flaw and a streak at low cost and stably. ;CONSTITUTION: A bottle as an inspection object is placed at an inspection position and rotated with a rotation means. Also, a CCD image sensor 5 is laid around the bottle as a center, viewed from a bottle neck opening top 1, and projectors are provided at the side of the sensor 5, at a position faced thereto, and at the right and left sides or one side of the position. Then, the image sensor 5 and the projectors are kept at a projection angle for a horizontal plane, so as to allow the observation of an edge inside the bottle, and a defect is detected under light emitted from the projectors.;COPYRIGHT: (C)1996,JPO