method and device for precise study of the appearance of articles.

摘要

A method and apparatus for inspecting appearances of articles, comprising reflecting images of four different side surfaces of an article (2) being transported on a conveyor (1) on a plurality of reflecting means arranged above and at both sides of a conveying path on the conveyor (1) to transmit the four images onto a sensor surface of a sensor camera (3) respectively, reflecting an image of a top surface of the article (2) onto the sensor surface of the sensor camera in the array with the four images, and scanning and photographing the images of five different surfaces of the article (2) formed on the sensor surface of the sensor camera (3) by the sensor camera (3) at every preset amount of movement of the article (2) synchronized with the conveyor (1), and processing the photographed images so as to measure and inspect forms, sizes and surface conditions of the article (2) by using only one sensor camera (3) at the same time. The method and apparatus can cover five of the six partial surfaces, front and rear, right and left, and upper and lower, of an article, that is, 5/6 = 83% of the whole surface of an article (2) reliably in the inspection of surface conditions.