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(11) | EP 1 063 325 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Device for the tapering of yarn-gathering bobbins on a twisting frame |
(57) A device for the tapering of yarn-gathering bobbins on a twisting frame comprises
a traversing roller (11) which is actuated by the main motor of the twisting frame
by means of appropriate mechanisms and is provided with a Z-shaped profile (12) generating
a reciprocating motion in a connecting road (14) and where the law governing tapering
of the bobbins is controlled by an inclinable tapering guide (19), which is kinematically
connected to the aforesaid connecting road (14) and is able to vary the stroke of
the reciprocating motion of the connecting road (14). If the said device, the inclination
of the tapering guide (19) is adjusted by means of the operation of a pneumatic actuator
(21), where each stroke of the pneumatic actuator (21) enables practically instantaneous
variations in tapering having a pre-set value to be obtained. |