METHOD FOR DETECTING SHAPE DEFECT OF MOLDED ARTICLE

PROBLEM TO BE SOLVED: To provide a method for detecting a shape defect of a molded article capable of detecting a defect on a lower surface of the molded article with high accuracy, and detecting general deformation such as a warpage of the molded article. SOLUTION: Light is radiated obliquely to th...

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Bibliographische Detailangaben
Hauptverfasser:	MITSUI MASANOBU, HIGA MASAFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for detecting a shape defect of a molded article capable of detecting a defect on a lower surface of the molded article with high accuracy, and detecting general deformation such as a warpage of the molded article. SOLUTION: Light is radiated obliquely to the lower surface of the molded article 1 from a longitudinal direction of a feed direction of the molded article 1 while the molded article 1 is being fed so that the light is irradiated as a linear line 2 in a width direction vertical to the feed direction of the lower surface of the molded article 1. A line 1 of the light irradiated on the lower surface of the molded article 1 is imaged by a camera 3 to check a linear state of the line 1 of the light and detect the defect on the lower surface of the molded article 1. COPYRIGHT: (C)2009,JPO&INPIT