|
(11) | EP 0 953 661 A3 |
(12) | EUROPEAN PATENT APPLICATION |
|
|
|
|
|||||||||||||||||||||||
(54) | Method of forming cop for spinning machine |
(57) A cop forming method for a spinning machine wherein the method can protect the wind
shape of a cop against deformation even when the spinning speed changes during the
cop forming. The method of forming a cop in a spinning machine through up/down reciprocative
motion of a ring rail for which a chase stroke, a chase speed, a step length and so
forth have been set previously includes a step of correspondingly modifying the up/down
reciprocative motion of the ring rail so that when the spinning speed becomes lower,
the step length is increased correspondingly or the chase speed is increased correspondingly,
while when the spinning speed becomes higher, the step length is decreased correspondingly
or the chase speed is decreased correspondingly. |