Double-branch-tube fascinated yarn supply air tube

Abstract

The invention relates to a double-branch-tube fascinated yarn supply air tube. The double-branch-tube fascinated yarn supply air tube comprises a Venturi tube and two branch tubes communicated with the Venturi tube in a sealed mode. The Venturi tube is provided with a compression section, a throat tube section and an expansion section, wherein the compression section, the throat tube section and the expansion section are coaxial, the branch tubes are connected with the throat tube section through hinges, and the surface of the inner side of each branch tube and the surface of the inner side of the throat tube section are respectively provided with an elastic sealing layer. The hinges are covered with the elastic sealing layers. The included angle between the axis of each branch tube and the axis of the compression section is an acute angle. By the adoption of the double-branch-tube fascinated yarn supply air tube, the defect of the prior art is overcome, the Venturi tube and the two branch tubes connected with the Venturi tube through the hinges are adopted, the method that yarn backing off is conducted under the drive of airflow is adopted as a breakthrough, airflow driving is soft, yarn cannot be damaged, and the phenomena such as yarn breakage are avoided; through the action of the hinges, the included angle between each branch tube and the venturi tube can be changed, so that the flow rate of air, driving the yarn, in each branch tube is flexibly adjusted.

Description

Technical field [0001] The invention relates to a double-strand yarn distribution device for wrapping yarn, in particular to a double-branch wrapping yarn supply air tube. Background technique [0002] Wrapped yarn is a yarn structure formed by one or more yarns as the core yarn and another or more yarns spirally wrapped around the core yarn. Usually the core yarn is spandex and the outer yarn is spun yarn. . During production, the feeding speed of the core yarn and the outer yarn are different, the feeding speed of the core yarn is relatively small, and the feeding speed of the outer yarn is relatively large, resulting in different length effects. In the prior art, the core yarn and the outer yarn achieve the effect of different lengths through different passive unwinding speeds of the yarn. This method will cause the phenomenon of yarn breakage or insufficient length effect, and the passive unwinding method The production speed is greatly restricted, and the yarn passing t...

AI Technical Summary

Problems solved by technology

In the prior art, the core yarn and the outer yarn achieve the effects of different lengths through different yarn passive unwinding speeds. This method will cause yarn breakage or the length effect cannot meet the requirements. At the same time, the passive unwinding method The production speed is greatly restricted, and the yarn passing through the guide wheel is also vulnerable to damage during unwinding

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