Method for inspecting neck portion of molded bottle

Details Method for inspecting neck portion of molded bottle Method for inspecting neck portion of molded bottle

1995-04-19

1997-04-01

Pham, Hoa Q.

Optics: measuring and testing

Inspection of flaws or impurities

Containers or enclosures

250223B, 348127, G01N 2190

Patent

active

056172044

ABSTRACT:
An inspection method for determining the presence and type of defects in the lip of a bottle. A CCD sensor and a light source are arranged at one side of the bottle above the lip, and additional light sources are arranged at the other side of the bottle above the lip. The presence and type of defects are determined by observing the profile of the image signal output by the CCD when light is reflected from the lip of the bottle. Defective bottles produce a wider than normal signal profile, two or more peaks, an interrupted profile or a weak arc image signal. The form of the image signal is indicative of the type of defect in the lip of the bottle.

REFERENCES:
patent: 4498003 (1985-02-01), Cibis
patent: 4606635 (1986-08-01), Miyazawa et al.
patent: 4775889 (1988-10-01), Yoshida
patent: 4811251 (1989-03-01), Minato
patent: 4945228 (1990-07-01), Juvinall et al.

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