| 摘要 |
Apparatus for reverse threading a yarn through a yarn-spinning device having a central yarn passage having an outlet end and a longitudinal axis, the apparatus comprising a nozzle for receiving a thread end, aligning with the yarn passage, and reversely blowing the thread end through the yarn passage, the nozzle including a longitudinal recess having an open end for receiving the thread end and a longitudinal cylindrical aperture communicating With the recess, the thread end being receivable through the open end of the recess into the cylindrical aperture, the cylindrical aperture having an axis, the apparatus further comprising a mechanism for moving the nozzle from a first yarn-receiving position to a second yarn-delivering position at the outlet end of the central yarn passage, the axis of the cylindrical aperture being aligned with the axis of the yarn passage when the nozzle is in the second position, the nozzle further comprising an air conduit connected at one end to a source of pressurized air and discharging at another end into the recess such that air is blown through the recess and reversely through the central yarn passage when the nozzle is in the second position.
|
