Process and apparatus for measuring the length of moving shaped articles particularly red-hot semifinished articles

摘要

There is described a process and apparatus for non-contact measurement of the length of a moving shaped body, and particularly of red-hot semifinished products, by scanning the body with a high-speed camera, characterized in that after a starting signal is triggerd by the side of the shaped body which lies in the direction of movement, a high-speed television camera is triggered which is aligned on a window located at a distance 11 from the point where the starting signal is triggered, and determines the length 12 of the end of the moving shaped body which projects into the window by means of a slotted diaphragm moving at a high rate of speed and connected to a counter, in which the sum of 11 and 12 gives the total length of the moving object or body.