JPS6215264Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid treatment nozzle for forming an interlace yarn having loops and bulk by subjecting a multifilament yarn to a fluid jet treatment.

Various fluid treatment nozzles have been proposed in the past for forming non-bulky interlaced yarns with good convergence by subjecting multifilament yarns to fluid injection treatment. The present invention provides a fluid treatment nozzle for producing bulky interlaced yarns, and the gist of the invention is to provide a fluid treatment nozzle that includes a thin tube-shaped thread guide hole, a fluid injection hole opened into the thread guide hole, and In the fluid processing nozzle, the diameter of the yarn path hole on the upstream side of the yarn from the fluid injection hole is once reduced and then expanded, and the fluid treatment nozzle is composed of a nozzle body having a The fluid treatment nozzle has an injection hole opened into the yarn guide hole on the downstream side of the yarn guide hole diameter reducing part and at an angle θ of 80 to 110 degrees with respect to the center axis of the yarn guide hole.

The present invention will be explained below with reference to the drawings. Fig. 1 is a longitudinal sectional side view showing an example of the present invention. In the same figure, 4 is a nozzle body, and a collision plate 3 is located near the yarn outlet of the nozzle body 4. is provided. In addition, the diameter of the yarn passage hole 2 of the nozzle body 4 once decreases discontinuously on the yarn upstream side from the fluid injection hole 1 portion, and then continuously expands, and the fluid injection hole 1 also decreases in diameter. 80 to 110 to the center axis of the thread guide hole on the downstream side of the thread
It opens into the thread guide hole 2 at an angle θ of .

The nozzle according to the present invention has the function of forming bulky spunlike yarn with loops as described above, and also has the strong interlacing function inherent to the interlace nozzle. The yarn guide hole diameter is gradually reduced on the upstream side of the yarn, and the fluid injection hole is provided downstream of the yarn guide hole diameter reduction part, thereby directing most of the jetted fluid to the yarn downstream side. It's about to erupt from the exit. By giving the jetting fluid directionality in this way, a suction effect is created on the running yarn into the nozzle, and as a result, even if an excessive amount of yarn is supplied, the yarn does not sag and is stably moved into the nozzle. The liquid will be guided inside and subjected to fluid treatment.

However, in order to create a fluid treatment yarn with a span effect by entangling the constituent filaments in the nozzle rather than simply suctioning and jetting the excessively supplied yarn, the jetting direction is an important factor. becomes. That is, as the injection hole is inclined toward the upstream side of the nozzle and acts in the forward direction with respect to the running direction of the yarn, the weaving effect of the yarn due to the direct flow of fluid decreases, and the entanglement tends to become less severe. become. Conversely, the nozzle is tilted downstream and acts in the direction opposite to the thread running direction, so that the injection hole portion
Non-uniform turbulent flow tends to occur in the yarn guide hole between the yarn guide hole condensation part, and although strong entanglement can be obtained in some areas, the ejection of the yarn from the nozzle outlet is unstable. Similarly, the state of suction into the nozzle becomes uneven, and as a result, stable processing tends to be possible only at a low excess supply rate. The collision plate 3 serves to increase the turbulent flow effect within the thread guide hole 2 and to make the intertwining of the threads more dense.

As a result of various studies by the inventors of the present invention, in order to obtain a spun-like entangled yarn that can be stably processed under a high excess supply rate of yarn, has strong entanglement, and is uniform, the fluid injection hole should be placed at the central axis of the yarn guide hole. On the other hand, it was found that it was necessary to open the thread guide hole at an angle θ of 80 to 110°. FIG. 2 is a longitudinal side view showing another embodiment of the present invention, showing an example in which the diameter of the thread passage hole is continuously reduced and then continuously enlarged;
The same can be said for the nozzle in the figure.

As explained above, according to the present invention, spunlike yarn having a stable and strong yarn structure can be easily produced even at a high excess supply rate, and its industrial value is extremely large.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional side views showing various examples of fluid treatment nozzles according to the present invention.
In the figure, 1 and 1' are fluid injection holes, 2 and 2' are thread guide holes, 3 and 3' are collision plates, and 4 and 4' are nozzle bodies.

Claims (1)

[Scope of utility model registration request] It consists of a nozzle body having a thin tube-shaped thread guide hole and a fluid injection hole opening into the thread guide hole, and a collision plate provided near the yarn outlet of the nozzle body, and a fluid injection hole portion of the nozzle body. In the fluid treatment nozzle, in which the diameter of the yarn guide hole on the upstream side of the yarn is once reduced and then expanded, the fluid injection hole is positioned downstream of the yarn guide hole diameter reduction part and at an angle of 80 to 110 degrees with respect to the center axis of the yarn guide hole. θ
A fluid treatment nozzle opened into the thread guide hole.