Weft thread insertion nozzle

Details Weft thread insertion nozzle Weft thread insertion nozzle

1996-03-27

1997-12-16

Falik, Andy

Textiles: weaving

Weft manipulation

Weaving with stationary weft supply

28271, D03D 4730

Patent

active

056974051

ABSTRACT:
A weft thread insertion nozzle includes a thread supply tube (3) and a mixing tube (8) arranged in axial alignment in a housing (4). An outlet end section (3A) of the thread supply tube (3) reaches into and overlaps an inlet section (8A) of the mixing tube (8), with an airflow channel (5A) provided between the outlet end section (3A) and the inlet section (8A). A plurality of notches (11) or through-holes (13, 14, and 15) are arranged distributed around the circumference of the outlet end section (3A). The jet medium accelerated through the airflow channel (5A) can enter the tube (3) through the notches (11) or holes (13, 14, and 15), whereby the jet medium expands and entrains the weft thread before entering into the mixing tube. By shifting the air expansion and entrainment of the weft thread upstream, turbulence is avoided and the weft thread is more gently and positively entrained so as to improve the performance of the insertion nozzle.

REFERENCES:
patent: 4619296 (1986-10-01), Hrus et al.
patent: 4643233 (1987-02-01), Manders
patent: 5282779 (1994-02-01), Sakai et al.
patent: 5526850 (1996-06-01), Sora et al.

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