METHOD FOR DETERMINING AUTOMATICALLY THE OFFSET ANGLE BETWEEN THE NEEDLE CYLINDER ZERO AND THE ENCODER ZERO IN A CIRCULAR KNITTING MACHINE FOR HOSIERY OR OTHER ARTICLES

摘要

A method for determining automatically the offset angle between the needle cylinder zero and the encoder zero, in a circular knitting machine for hosiery or other articles, comprising the steps of: determining, by means of an encoder (11), the rotation of the needle cylinder (1) and sending a detection signal to an electronic processing unit (10); detecting, by means of a proximity sensor (7), a detectable area (6) which is defined at the lateral surface of the needle cylinder (1), the detectable area affecting an odd number of needles (2), the central needle with respect to the detectable area being identified as the reference needle and constituting the needle cylinder zero; determining, by means of the electronic processing unit (10), the angle of rotation of the needle cylinder (1) covered starting from the detection signal of the encoder (11), defined as encoder zero, to the needle cylinder zero, defined by the signal sent by the proximity sensor.