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(11) | EP 1 213 381 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Thread-end cutting method and thread-end cutting apparatus for spinning machine |
(57) In a thread-end cutting method in a spinning machine, a thread-end cutting member
(8) provided with a bobbin inserting portion (9) and a cutter portion (10) is disposed
so as to be raised and lowered with respect to a blade (5a) extending upward from
a spindle base portion (5b). The thread-end cutting member is always biased to the
spindle base portion (5b) by a coil spring (11). During suspension of doffing, a ring
rail stops at a portion in the vicinity of an abutting portion between the thread-end
cutting member (8) and the spindle base portion (5b). At a position slightly lower
than the abutting portion, the spindle stops while the yarn is wound by about one
roll or less. Then, bobbin yarn is pulled up by a doffing device, and the thread-end
cutting member (8) is raised up to the middle of pulling together with the bobbin
yarn, whereby yarn connected from the bobbin yarn to the traveler is guided between
the thread-end cutting member (8) and the spindle base portion (5b). Thereafter, the
yarn is grasped between the thread-end cutting member (8) having come off from the
bobbin yarn and the spindle base portion, and the yarn is cut by the cutter portion. |