| 摘要 |
This invention relates to a method for pneumatic threading in a double-twisting doubling frame (15) having a double hollow pin twisting spindle (10), in which the two thread feeding bobbins (2,4) are disposed coaxially, one above the other, in the head of the spindle (10), and each individual bobbin engages its own hollow pin (14,40), this method providing for removing the initial length of thread (1) from the lower bobbin (4) in order to advance it into the hollow pin (14) of the upper bobbin (2) and also removing the initial length of thread (3) from the upper bobbin (2) and holding together the two said initial lengths of thread so that they rest on the inlet of the upper hollow pin (14), a head connected to a source of compressed air coming towards and being pressed against said upper hollow pin (14), allowing for both the lateral displacement of the braking device (30) and the injection of compressed air for pneumatic threading. <IMAGE> |
