Method and apparatus for producing intertwined knots in a multifilament thread

摘要

A method and an apparatus produces intertwining knots in a multifilament thread. In this case, an air-stream pulse is directed through a nozzle opening transversely onto the thread. In order to produce a continuous succession of intertwining knots, the air-stream pulse is produced periodically with an interval between the air-stream pulses. In order to be able to produce an irregular thread structure, the interval between successive air-stream pulses is continuously changed. To this end, the apparatus has a nozzle ring carrying the nozzle opening, the nozzle ring being coupled to a drive. The drive of the nozzle ring is assigned a control device, by way of which a rotary speed of the nozzle ring is controllable for the purpose of changing an interval between the air-stream pulses.

主权项

1. Method for producing intertwined knots in a multifilament thread, in which the thread is guided with partial wrapping in a thread guide groove at a circumference of a nozzle ring and in which an air flow pulse is directed transversely onto the thread through a nozzle opening, and in which the air flow pulse is generated periodically with a pause time between the air flow pulses so that a continuous sequence of intertwined knots results in the running thread, wherein the pause time between successive air flow pulses for producing intertwined knots is continuously changed.