Device for modulating a first rotational motion of an input shaft to a second, different from the first, rotational motion of an output shaft in textile machines

摘要

The invention relates to a device for modulating a first rotational motion of an input shaft (2) to a second, different from the first, rotational motion of an output shaft (3) in textile machines, comprising:- a fixed complementary cam (1) provided with at least two cam profiles (1a, 1b);- at least one cam follower (5), which is linked to the input and the output shafts (2, 3) and which is provided with at least two contact rollers (6a, 6b), each following a different cam profile (1a, 1b), because of which the said cam followers (5) are performing a rocking motion,wherein the said cam profiles (1a, 1b) are internal cam profiles.