| 摘要 |
In open-end spinning and in coordination with predetermined operating phases, a yarn suction pipe 3 by means of which a yarn F extending from a bobbin 121 is to be received temporarily is brought successively into different operating planes Ea, Eb in which the yarn suction pipe 3 is imparted a defined operational movement in function of the operating planes Ea, Eb occupied and in coordination with the current operating phase. The operating positions 3b, 3c of the yarn suction pipe 3 that can be moved into at least two operating planes Ea, Eb are defined in such manner that when the yarn suction pipe 3 is in its operating position 3b, 3c in a first operating plane Ea, a yarn F extending from the bobbin 121 pressing on winding roller 120 to the yarn suction pipe 3 crosses the traversing range of the yarn traversing guide 126 but is outside the traversing range of this yarn traversing guide 126 when the yarn suction pipe 3 assumes its operating position 3A in an additional operating plane Eb. The yarn suction pipe 3 is mounted on a swivel pin that is in turn mounted on an additional swivel pin.
|
