JP3281863B2 - Interlace nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a multifilament yarn by using a fluid jet nozzle to converge the filaments and entangle the filaments with each other. The present invention relates to an interlace nozzle that provides convergence and suppresses spread and separation between fibers.

[0002]

2. Description of the Related Art Generally, non-twisted multifilament yarns lack bunching properties. Therefore, when used as warp yarns in textile machines, knitting machines and the like in a later step, individual fibers constituting the multifilament yarns as they are are not used. Are separated, resulting in thread breakage, sticking, defective fabric, and extremely difficult to handle. Therefore, the sizing process called sizing or
As an efficient means instead of the bundling means by the twisting and twisting steps, a filament thread is run under a predetermined tension while spraying a pressurized fluid to a thread treatment area penetrating in the axial direction of a cylindrical body, and a filament is formed. 2. Description of the Related Art A processing apparatus for imparting converging properties by entanglement in a thread shape has been widely used. However, this processing apparatus requires a large amount of pressurized fluid and has a problem that it is not economical.
Giving stable confounding is a major issue. Therefore, by using a fluid jet nozzle, the multifilament yarn is given a bunching property, and by intertwining the filaments with each other, the same bunching property as that of the twisted yarn is given despite the non-twist, and the spread between the fibers, Interlaced nozzles that suppress separation have been used.

Conventionally, an interlace nozzle has a cylindrical shape and is provided with an air injection port for injecting air to a fiber bundle near the center of a yarn processing area penetrating in the axial direction. A nozzle hole 2 for jetting a pressurized fluid was formed in a columnar thread processing area 1 having a columnar shape or a through-hole shape having a flat ceiling as shown in FIG. Further, as another form, a nozzle for design yarn processing is provided in Japanese Utility Model Application
No. -13499 describes that the yarn outlet side of the yarn conducting hole penetrating through the nozzle body has a larger diameter than the yarn inlet side.

[0004]

However, among the above-mentioned prior arts, the interlaced nozzle shown in FIGS. 1 and 2 has a pressurized fluid in FIG. As shown by L, the flow is diverged, and the flow becomes non-uniform, which tends to cause turbulence. For this reason, rotation is applied to the yarn and false twisting occurs, and confounding cannot be achieved, or confounding efficiency is low in terms of fluid consumption. On the other hand, in the interlace nozzle shown in FIGS. 3 and 4, the pressurized fluid uniformly collides with the ceiling surface of the yarn processing area 1, so that the generation of the swirling flow is suppressed and the probability of the occurrence of false twist is reduced. But not always at a satisfactory level,
Also, the fluid consumption was high.

Further, the interlaced nozzle described in Japanese Utility Model Application No. Hei 2-13499 is used for design yarn processing and intentionally generates a turbulent flow, and cannot be applied to non-design yarns. .

In view of the above-mentioned problems of the prior art, an object of the present invention is to provide an interlaced nozzle capable of imparting a high and stable normal confounding with a minimum consumption of pressurized fluid. .

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a tubular body having a thread path penetrating in the axial direction of the tubular body, wherein the thread path has a small-diameter entrance portion, A large-diameter entangled processing part which is continuous with the inlet part and has a fluid jet nozzle opening is formed. The outlet dimension of the nozzle hole is d, the outlet area is D, and the fluid is jetted from the boundary between the entangled processing part and the inlet part side. When the distance to the nozzle hole is L, the yarn path widths at the entanglement processing section and the entrance are W1 and W2, and the yarn path depths are F1 and F2, respectively, 2.0 mm ≦ L ≦ 5.0 mm, W2 ≦ 1.
2, 1.2 <W1 / d ≦ 3, 0.55 ≦ F1 / W1 ≦
1, an interlaced nozzle characterized by satisfying 0.5 ≦ W2 × F2 / D is provided.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 5 to FIG. 11 show an interlace nozzle according to the present embodiment. FIG. 5 is a perspective view of the interlaced nozzle. As shown in an exploded perspective view of FIG.
A large-diameter entanglement processing section 1 having a small diameter entrance section 6 of the yarn path, a yarn path exit 7 on the opposite side of the entrance section 6 and provided on the opposite side, and a fluid opened on a wall surface in the entanglement processing section 1 An ejection nozzle hole (hereinafter simply referred to as a nozzle hole) 2 is provided.

The reason why the diameter of the yarn path is different between the entrance portion 6 and the entanglement processing portion 1 is that the diameter of the entrance portion 6 is made small and narrow so that the yarn is straightened without bending as much as possible. Is based on the finding that the confounding due to the fluid ejection in the confounding processing unit 1 becomes very smooth.

FIG. 7 is a sectional view taken along line AA of FIG. 5. As shown in FIG. 7, the fluid jet nozzle hole 2 is inclined at an angle θ ° (45 ° or less) with respect to the axial direction of the yarn path. It has been arranged. According to this structure, the stagnation of the yarn is prevented by accelerating the running of the yarn and reducing the sliding resistance between the yarn and the yarn path, and the cross-sectional shape of the entrance 6 of the yarn path is reduced. This has the effect of preventing turbulent flow and enabling smooth confounding. Further, having a flat ceiling in the through-hole-shaped yarn processing region 1 also has a great effect for preventing turbulence. In the figure, the distance from the boundary between the entanglement processing section and the inlet section 6 side indicated by the symbol L to the fluid ejection nozzle hole 2 is 2.
0 mm ≦ L ≦ 5.0 mm or so. The distance L
Is less than 2.0 mm, turbulence is likely to be generated in the vicinity of the nozzle hole 2, and confounding may become unstable. On the other hand, when the distance L is larger than 5.0 mm, the yarn during running is likely to bend and the entanglement may not be smooth. The length of the yarn path is most generally 10 to 40 mm.

FIG. 8 is a sectional view taken along the line BB of FIG. 5. In FIG. 8, the symbol d indicates the outlet size of the nozzle hole 2, that is, the maximum width of the outlet. Further, the yarn path width W in the confounding processing section 1
1 is preferably in the range of 1.2 to 3.0 times the exit dimension d of the nozzle hole 2. When this ratio is 1.2 or less, turbulence is likely to occur near the nozzle hole 2, while 3.
If it is larger than 0, the movement range of the running yarn becomes excessively large, and the energy loss of the jet fluid is large, so that the confounding may be weak and unstable. Further, it is preferable that the yarn path depth F1 in the entanglement processing section 1 satisfies 0.55 ≦ W1 / F1 ≦ 1 in relation to the yarn path width W1. When the ratio W1 / F1 is less than 0.55, the sliding resistance between the yarn and the yarn path increases. On the other hand, when the ratio W1 / F1 is more than 1, the motion range of the running yarn becomes excessive, and the energy loss of the jet fluid is lost. , The confounding is weak and may become unstable.

FIG. 9 is a CC diagram of FIG. 5, and the yarn path width W2 at the inlet 6 shown in FIG. 5 is 1.2 times or less the outlet dimension d of the nozzle hole 2 (see FIG. 8). Preferably, there is. If this ratio is larger than 1.2, the yarn may bend or spread at the inlet portion 6 so that the energy of the ejected fluid cannot be efficiently applied, and confounding may not be smooth. In addition, thread path depth F2
Has a relatively small effect on confounding, but it is preferable that the cross-sectional area W2 × F2 is at least half the exit area D of the nozzle hole 2 in relation to the yarn path width W2. That is, W2
When xF2 / D is smaller than 0.5, there is a possibility that a part of the ejected fluid which is going to flow into the inlet 6 may stay and cause turbulence. Further, it is preferable that the entrance 6 is superscript with respect to the confounding processor 1. This is because it is more efficient for the thread to pass through the portion where the jet fluid spreads.

FIGS. 10 and 11 show another embodiment of the present invention. This interlace nozzle facilitates opening and closing of the yarn path. FIG. 10 shows a state in which the yarn path is closed.
1 shows a state in which the yarn path is open. The interlace nozzle holds the nozzle member 4 and the cover member 5 by mounting the nozzle member 4 on the lower fixing member 8 and assembling and fixing the lower fixing member 8 and the upper fixing member 9. In addition, the buttons 11 are fixed to both sides of the nozzle member 4 so that the yarn path can be opened and closed. That is, as shown in FIG. 11, when one of the buttons 11 on both sides is pressed, the nozzle member and the cover member 5 slide with each other, and the yarn path is opened and closed.

It is preferable that the nozzle member 4 and the cover member 5 are made of a high hardness ceramic such as alumina. It is necessary that the wall surface of the yarn path is made of a material that is easily abraded by abrasion with the yarn and has abrasion resistance. Further, the fluid ejected from the fluid ejection nozzle hole 2 usually contains foreign substances such as oil dust and dust, so that wear due to spraying of these foreign substances is less likely to occur.

Further, since the surface properties of the yarn path greatly affect the running resistance of the yarn, particularly when the yarn is a yarn having a smooth surface such as a flat yarn, Ra
A pear-shaped surface with asperities of about 0.8 is effective, while
In the case of a thread having irregularities such as a processed yarn or a textured yarn, it is effective to have a smooth surface of Ra 0.2 or less.

[0017]

Example 1 Using the interlace nozzle of the present invention shown in FIG. 5, a 150d / 48f polyester multifilament yarn was entangled, and the number of entanglements and the entanglement ratio after the treatment were measured. Compressed air was used as the pressurized fluid. In addition,
Table 1 shows the sizes of the nozzle holes and the yarn path of the interlace nozzle of this embodiment.

[0018]

[Table 1]

The processing conditions were such that the processing speed was 600 (m / m).
Minute)-The air pressure of the compressed air was set in the range of 1 to 4 (kg / cm ² ).

Measurement of the number of confounds is performed by adding 1 d
A reference length was set in a state where a load of 0.1 g (gram) per (denier) was applied and stretched, and the number of entanglements within the reference length and the number of entanglements within the reference length were measured several times. .

The number of confounds was determined as the average of the values obtained by converting the number of confounds per meter. In addition, the confounding rate was obtained as a percentage of the confounding number relative to the sum of the confounding number and the unconfounded number. As a result, when the confounding rate was 90% or more, it was evaluated as good.

As a comparative example, the same evaluation was performed using the interlaced nozzles shown in FIGS. 1 and 3, respectively.

FIGS. 12 and 13 show the relationship between the air consumption and the number of confounds and the confounding rate in each example. 12, the result of the comparative example of the interlaced nozzle shown in FIG. 1 is shown by curve 1, the result of the comparative example of the interlaced nozzle shown in FIG. 3 is shown by curve 2, and the result of Example 1 of the present invention is shown by curve 3. As is clear from the figure, Example 1 of the present invention had the highest number of confounds.

In FIG. 13, a curve 4 represents the result of the comparative example of the interlaced nozzle shown in FIG. 1, and a curve 5 represents the result of the comparative example of the interlaced nozzle shown in FIG.
Is shown by curve 6. As can be seen from the figure, Example 1 of the present invention had the highest confounding rate and the lowest air consumption.

[0025]

Embodiment 2 As shown in Table 1, the injection angle θ of the nozzle hole
The evaluation at 0 ° and 10 ° was performed in the same manner as in Example 1. The results are shown in FIGS. As shown in these figures, when θ ° = 10 °, the number of confounds and the degree of confounding were higher and more stable.

[0026]

Embodiment 3 As shown in Table 1, the yarn path width W2 is 1.0 to
The evaluation was performed in the same manner as in Example 1 except that the difference was 3.0 mm.
The results are shown in FIGS. In these figures, curves 9, 1
0, the yarn path width W2 with respect to the exit dimension d of the nozzle hole
When the ratio was 1.2 or less, both the number of confounds and the confounding ratio were high and stable, whereas when the ratio exceeded 1.2, both the number of confounds and the confounding ratio sharply decreased.

[0027]

Embodiment 4 As shown in Table 1, the yarn path depth F2 was 0.5
Evaluation was performed in the same manner as in Example 1 except that the difference was up to 2.0 mm. The results are shown in FIGS. In these figures, curve 1
As in Examples 1 and 12, a high number of confounds and a high confounding rate were obtained in each case. Therefore, it was found that the value of the yarn path depth F2 has a relatively small influence on the confounding.

[0028]

Embodiment 5 As shown in Table 1, the entanglement processing section and the entrance section 6
The distance L from the boundary with the side to the fluid ejection nozzle hole 2 is set to 0.
Evaluation was performed in the same manner as in Example 1 except that the distance was changed from 5 to 6.0 mm.

The results are shown in FIGS. In these figures, as shown by curves 13 and 14, the distance L is 2.0 to 2.0.
When it was within the range of 5.0, both the number of confounds and the confounding ratio were high and stable.

As another embodiment, the same evaluation was performed by changing W1 / d to 1, 1.5, 3, and 4 and setting other conditions within the range of the present invention. In contrast to those having d of 1 or 4, the remaining ones were high in both the number of confounds and the confounding ratio, and were stable.

Further, as another embodiment, the F1 / W1
The same evaluation was carried out with the values of 0.5, 0.75, 1, and 1.25. Was stable.

[0032]

As described above, according to the present invention, a cylindrical body having a yarn path penetrating in the axial direction of the cylindrical body is formed. It is composed of a large diameter entangled processing part that is continuous and has a fluid ejection nozzle hole opened. The outlet dimension of the nozzle hole is d, the exit area is D, and the boundary between the entanglement processing part and the inlet side to the fluid ejection nozzle hole. Is the distance L, and the yarn path widths at the confounding processing unit and the entrance are W1 and W, respectively.
2. When the yarn path depth is F1 and F2, respectively, 2.0
mm ≦ L ≦ 5.0 mm, W2 / d ≦ 1.2, 1.2 <W
1 / d ≦ 3, 0.55 ≦ F1 / W1 ≦ 1, 0.5 ≦ W2
The use of an interlace nozzle that satisfies × F2 / D provides an effect that a high and stable normal confounding can be imparted with as little pressurized fluid consumption as possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional interlace nozzle.

FIG. 2 is an explanatory diagram showing a hole shape of an interlace nozzle of FIG. 1;

FIG. 3 is a perspective view of another conventional interlaced nozzle.

FIG. 4 is an explanatory diagram showing a hole shape of the interlace nozzle of FIG. 3;

FIG. 5 is a perspective view of the interlace nozzle of the present invention.

6 is an exploded perspective view of the interlace nozzle of FIG.

FIG. 7 is a sectional view taken along line AA of FIG. 5;

FIG. 8 is a sectional view taken along line BB of FIG. 5;

FIG. 9 is a sectional view taken along the line CC of FIG. 5;

FIG. 10 is a sectional view of an interlace nozzle according to another embodiment of the present invention.

11 is a cross-sectional view of the interlace nozzle of FIG. 11 in a state in which a thread-like mounting is possible.

FIG. 12 is a diagram illustrating the relationship between the air consumption and the number of confounds according to the first embodiment.

FIG. 13 is a diagram showing the relationship between the air consumption and the confounding rate in the first embodiment.

FIG. 14 is a diagram illustrating a relationship between a nozzle ejection angle and an entangling rate according to the second embodiment.

FIG. 15 is a diagram illustrating a relationship between a nozzle ejection angle and the number of confounds according to the second embodiment.

FIG. 16 is a diagram illustrating a relationship between a yarn path width and an entangling rate in Example 3.

FIG. 17 is a diagram illustrating the relationship between the yarn path width and the number of confounds according to the third embodiment.

FIG. 18 is a diagram illustrating a relationship between a yarn path depth and an entangling rate in Example 4.

FIG. 19 is a diagram showing the relationship between the yarn path depth and the number of confounds in Example 4.

FIG. 20 is a diagram illustrating a relationship between a yarn path shape change position and a confounding rate according to the fifth embodiment.

FIG. 21 is a diagram illustrating a relationship between a yarn path shape change position and the number of confounds according to the fifth embodiment.

[Explanation of symbols]

 Reference Signs List 4 Nozzle member 5 Cover 6 Entrance part 1 Entangling processing part 2 Nose hole θ ° Angle 6 Inlet part d Exit dimension W1, W2 Thread width F1, F2 Thread depth 8 Lower fixing member 9 Upper fixing member 11 Button

Claims (1)

(57) [Claims] 1. A cylindrical body having a yarn path penetrating in the axial direction of the cylindrical body, the yarn path having a small-diameter inlet portion, and a large-diameter continuous with the inlet portion and having a fluid ejection nozzle hole opened. The diameter of the nozzle hole is d, the outlet area is D,
The distance from the boundary between the entanglement processing section and the inlet section to the fluid ejection nozzle hole is L, the yarn path widths at the entanglement processing section and the inlet section are W1 and W2, and the yarn path depths are F1 and F2, respectively.
2.0 mm ≦ L ≦ 5.0 mm, W2 / d ≦
1.2, 1.2 <W1 / d ≦ 3, 0.55 ≦ F1 / W1
≦ 1, 0.5 ≦ W2 × F2 / D.