AUTOMATIC INSPECTING DEVICE FOR SMOOTHNESS OF PAINT FILM

• Main Authors: FUKUI TAKAHIRO, FUJIMORI KAZUO, SAKAKIBARA MASATO
• Format: Patent
• Language: English
• Published: 24.08.1989
• Subjects: 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

PURPOSE:To easily execute a paint film inspection of a product on a manufacturing line by providing a stripe pattern projecting means, an image pickup means, a line fining processing means and an endpoint.intersection arithmetic means. CONSTITUTION:An image of a bright and dark stripe pattern on the surface of an object to be inspected by a stripe pattern projecting means M1 is brought to image pickup as an intensity level signal of light by an image pickup means M2, and a line fining processing means M3 compares this intensity level signal of light with a prescribed reference value. As a result, the bright and dark stripe pattern which has been brought to image pickup becomes a bright and dark stripe pattern of a binary signal, and also, a bright part or a dark part of the bright and dark stripe pattern of the binary signal is brought to line fining to prescribed line width. Thereafter, an endpoint.intersection arithmetic means M4 extracts a trace-cut endpoint and an intersection of the line which has been brought to line fining, the number of endpoints and intersections which have been extracted or its dispersion state is calculated, and from the number of endpoints and intersections or its dispersion state which has been calculated, smoothness of a paint film of the object to be inspected is decided by a smoothness deciding means M5.