(57) The invention relates to a method and a device for distributing yarn wound on a cross-wound
bobbin (2) at an operating unit of a textile machine, in which a yarn guide (3) actuated
by a synchronous motor (43) reciprocates along the axis of the rotation of the wound
bobbin (2), whereby on the synchronous motor (43) a time interval for the reciprocating
travel of the yarn guide (3) from one dead centre (U1) to the other dead centre (U2)
is set and the position of the yarn guide (3) is synchronized with the the reference
position which is between these dead centres (U1, U2). During each reciprocating travel,
the time point of the actual passing of the yarn guide (3) through the reference position
is detected and the time difference between the time point of the actual passing of
the yarn guide (3) through the reference position and the predetermined theoretical
time point of the passing of the yarn guide (3) through the reference position is
evaluated and, on the basis of the detected time difference, the duration of the rotation
of the synchronous motor (43) changes until the respective reciprocating travel is
finished, which also leads to the change of the length of the path of the yarn guide
(3) from the reference position to the dead centre (U1, U2), to which the yarn guide
(3) is currently approaching.
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