JPS6088146A - Fluid interlacing nozzle of yarn - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fluid entanglement treatment nozzle that injects fluid onto a yarn passing through a yarn guide hole to impart entanglement to the yarn. More specifically, the yarn processing speed is 1500 to 2500 m/min.
The present invention relates to a fluid entanglement treatment nozzle that can provide sufficient entanglement to yarns even under such high speed conditions.

Prior art In recent years, the processing speed for crimping comparatively thick synthetic fibers used for carpets, car mats, etc. has been greatly improved, especially in crimping methods that apply fluid nozzles. min.

Machining speeds even higher than this are becoming possible. For this reason, they were conventionally performed separately. spinning.

This makes it possible to connect the drawing process and the crimping process continuously, creating the so-called DTY (lozenge-kissed yarn).

5DTY (Spin Draw Textured Yarn) is now available.

On the other hand, as the production speed has increased to 1], it has become difficult to insert a twisting process in the middle of the process, and the winding yarn becomes untwisted, resulting in loss of cohesiveness between the constituent filaments.
A new problem has arisen: troubles in post-processes are increasing.

Therefore, various entangling treatment nozzles using fluid are being devised as a means to improve the convergence of the yarn, but all of these have a yarn running speed of 500 to 900 T.
Although entanglement can be applied at relatively low speeds such as rL/min, yarn running speeds of 1500 to 2500 m
The reality is that when the speed reaches a high speed range such as /min, entangling becomes insufficient, and problems in subsequent processes have not yet been resolved. Furthermore, even if the dimensions of various entangling nozzles developed for comparatively fine denier yarns for clothing are expanded to accommodate thicker denier yarns, entangling at high speeds is still insufficient. there were.

While investigating various entangling processing nozzles for high-speed entangling processing of thick denier yarns, the present inventors discovered that the production speed could be increased by selecting the shape of the thread passage hole and the opening position of the fluid injection hole. It was discovered that even at high speeds of 1,500 to 250,017 L/min, it was possible to impart -1--mediated entanglement with almost no trouble in subsequent steps, leading to the invention of the present entanglement processing nozzle.

OBJECTS OF THE INVENTION An object of the present invention is to provide an entangling treatment nozzle that can provide sufficient entanglement even under high-speed processing without causing almost any trouble in subsequent steps.

Structure of the Invention In other words, the present invention provides a yarn conduction system comprising a large-diameter cylindrical part on the yarn entry side, a small-diameter cylindrical part on the yarn exit side, and a truncated conical part connecting the two cylindrical parts. Fluid entanglement of yarns, characterized in that a hole is provided, and a plurality of fluid injection holes are provided that are perpendicular to the center line of the yarn passage hole and open on the inner surface of the large diameter cylindrical part. It is a processing nozzle.

Hereinafter, the present invention will be explained with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of the entangling treatment nozzle according to the present invention, and FIG.
The figure is a cross-sectional view taken along the line ■ to ■ in FIG. 1.

In FIGS. J and 2, reference numeral 1 denotes an entangling nozzle main body, which is composed of main body members 1a and 1b, and four yarn passing holes 2 are provided in the entangling nozzle 1. The yarn entry side of the yarn passage hole 2 is comprised of a large diameter cylindrical portion 3, and the yarn exit side is comprised of a small diameter cylindrical portion 4, and the large diameter cylindrical portion 3 and the small diameter cylindrical portion 4 are formed by cutting. They are connected by a conical head portion 5.

On the other hand, fluid injection holes 7+, 72. which are perpendicular to the center line 6 of the yarn passage hole 2 and open to the inner surface of the large diameter cylindrical portion 3;
A plurality of 73 are provided. Pressure/fluid is supplied from the fluid source (
(not shown), the fluid is supplied to the fluid jet heights 7+ and 72.73 via the fluid supply pipe 8 and the fluid chamber 9.

4- In addition, 10 is a bottle for coupling and fixing the main body members 1a and 1b, and 11.12 is a sealing member.

In this way, the yarn passage hole 2 is connected to the large diameter cylindrical portion 3 on the yarn entry side.
, consisting of a small-diameter cylindrical portion 4 on the yarn exit side and a truncated conical portion 5 connecting the two cylindrical portions 3 and 4, and perpendicular to the center line 6 of the yarn passage hole 2, and By providing a plurality of fluid injection holes 7+, 72, 73 that open on the inner surface of the large-diameter cylindrical portion 3, when the yarn passes through fluid turbulence, the yarn tension is reduced and the yarn is kept in a relaxed state. Backflow action works and entanglement is likely to occur in the opened state of the yarn, and sufficient entanglement can be imparted even when thick denier yarn is treated with high-speed pox.

In this case, it is desirable that the number of fluid injection holes 7+, 72.73 be three. Now, when the diameter of the large-diameter cylindrical portion 3 on the yarn entry side that constitutes the yarn passage hole 2 is Dl (Mn), and the diameter of the small-diameter cylindrical portion 4 on the yarn exit side is D2 (mrtr),
The relationship between the degree of entanglement (the number of interlaces per TrL of yarn) and D, /D2 is as shown in Figure 3, which is 15, which is the desired number of interlaces in the subsequent process.
To obtain a degree of confounding of ≦/m, 2.0≦D /D,≦
It is preferable that 9.5, 4,0≦D, /D2≦8.0.

Furthermore, when the diameter of the fluid injection holes 71, 72, 73 is d(a), the relationship between the degree of entanglement (the number of interlaces per 1 m of yarn) and 3d2/D is as shown in Figure 4. In order to obtain an upwardly convex curve and a degree of entanglement of 15 digits/m or more, 0.4≦2 2 3 d2/D ≦ 1.0, especially 0.7≦ 3 d2 /
It is preferable that D,≦carbonate 1.0.

Here, the graphs in Figures 3 and 4 are 1500 denier,
Nylon crimped yarn with 68 filaments under fluid pressure of 7 kg
/ under ctd r2000m/1llirl (7)
This is a result of speed-interlacing processing, and will vary slightly depending on the conditions.

Furthermore, the distance 11AL (mm) from the center of the opening of the fluid injection hole 7+, 72.73 to the yarn passage hole 2 population, and the distance from the center of the opening of the fluid injection hole 7+, 72.73 to the exit of the yarn passage hole 2. Distance BL(s) and fluid injection holes 7+, 72
．． It is desirable that the distance OL (mm) from the center of the opening of 73 to the base of truncated conical portion 5 satisfies the following relationship.

15≦hesi≦25 30≦8L+BL≦50 4≦CL≦10 Fluids used in the nozzle of the present invention include compressed air, saturated steam, heated steam, and other inert gases, but especially compressed air.

Heated steam is advantageously used. Among them, 1500
When processing at a high speed of ~250 in/min, steam has a greater effect of imparting entanglement, and even under the fluid pressure required to obtain an entanglement degree of 15 in/min or more, the yarn quality, especially the crimp rate, can be improved. There is only a slight decrease in , and no trouble occurs in the post-process.

Effects of the Invention The nozzle of the present invention has the above-mentioned configuration, and is mainly intended for interior materials with crimp in thick deniers of 500 De in total denier and 6 de in single yarn denier, and has a production speed of 1500 De. ~2500m/mi
Although it is intended for high speeds such as n, it is of course possible to provide even higher density entanglement when targeting fine denier materials, flat yarns, etc., or when using at low speeds. , it has wide versatility.

The present invention will be explained in more detail below using examples.

Example 1300 using the entangling treatment nozzle shown in Figures 1 and 2.
Denier, 68 filament nylon crimped thread 210
When the interlacing process was performed at a speed of 0'rrL/l1lin, a degree of interlacing at the level of 20 interlaces/TrL was obtained. Next, this untwisted yarn was tufted onto a base fabric to make a prototype carpet, but there was no roughness due to lack of yarn cohesiveness during the process, and the handleability was good. .

In addition, the diameter D1 of the large diameter cylindrical part on the yarn entry side of the yarn passage hole is 7M,
The diameter D2 of the small diameter cylindrical part on the yarn exit side is 2.51+l#l, the number of fluid injection holes is 3, the diameter d of the fluid injection hole is 3.6#, and the distance from the center of the opening of the fluid injection hole to the entrance of the yarn passage hole. Distance 111AL
is 25#III+, the distance BL from the center of the opening of the fluid injection hole to the outlet of the thread passage hole is 15m, and the distance 8-CL from the center of the opening of the fluid injection hole to the base of the truncated conical part is 5m. Ta. Also, the fluid supplied to the nozzle was 8
It was compressed air at a pressure of K9/cM G.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the entangling treatment nozzle according to the present invention, and FIG.
The figure is a cross-sectional view taken along the line ■ to ■ in Figure 1, and the beam in Figure 3 is /D.
A graph showing the relationship between 2 and the degree of confounding, Figure 4 is 3 d2
It is a graph showing the relationship between /D and the degree of confounding. 1...Entanglement treatment nozzle body 2...Yarn conduction hole 3...Large diameter cylindrical portion 4...Small diameter cylindrical portion 5... ...Frustoconical part 7+, 72.73...Fluid injection hole Fig. 1 Fig. 3 Fig. 4

Claims (1)

[Claims] 1. A large-diameter cylindrical portion on the yarn entry side and a small-diameter cylindrical portion on the yarn exit side;
A yarn passage hole consisting of a truncated cone-shaped portion connecting the two cylindrical portions is provided, and the yarn passage hole is white relative to the center line of the yarn passage hole and opens on the inner surface of the large diameter cylindrical portion. A fluid entanglement treatment nozzle for yarn, characterized in that a plurality of fluid injection holes are provided. 2. The yarn fluid entanglement treatment nozzle according to claim 1, wherein the number of fluid injection holes is three. 3. Large diameter cylindrical part diameter D + (s), small diameter cylindrical part diameter D2 (
The nozzle for fluid entanglement treatment of yarn according to claim 2, wherein IM+) and the diameter d(#) of the fluid injection hole satisfy the following relationship. 1.2≦D/D≦11.0 1 2 0.4≦362/D2≦1.0 4. Distance from the center of the opening of the fluid injection hole to the entrance of the thread passage hole L (mm), Fluid Distance BL' (s) from the center of the opening of the injection hole to the outlet of the thread passage hole, and distance CL (mm) from the center of the opening of the fluid injection hole to the base of the truncated conical part.
The fluid entanglement treatment nozzle for yarn according to claim 3, wherein: satisfies the following relationship. 15≦A1-≦25 30≦81-≦50 4≦CL≦10