JPH0533235A - Apparatus for interlacing treatment of yarn - Google Patents

Abstract

PURPOSE:To obtain the subject apparatus effective for simplifying the threading operation by opening a fluid-ejection hole on a yarn-passing hole perpendicular to the yarn and forming a yarn-guide hole and a compressed fluid discharging hole at both ends of the yarn-passing hole in respective specific states. CONSTITUTION:An ejection hole 3 of a compressed fluid is opened on a yarn- passing hole 2 having a circular or elliptic cross section. Yarn guide holes 4,5 are opened at both ends of the yarn-passing hole. The length of the guide hole is >=5mm and the cross-sectional area of the hole is <=0.33 times that of the yarn-passing hole. The discharging holes 8,9 opened at both ends of the yarn-passing hole have a total cross-sectional area larger than 1/3 of the cross-sectional area of the ejection hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn entanglement treatment device for injecting a fluid onto a yarn to impart entanglement to the yarn.

[0002]

2. Description of the Related Art Conventionally, as a method or a device for imparting entanglement to a yarn, a yarn guide hole and a fluid injection hole opened in the yarn guide hole are provided. There is known an entanglement processing device which ejects a fluid from the above to impart an entanglement.

For example, in Japanese Patent Laid-Open No. 57-95332, a yarn guide tube is provided on the yarn entry side and the yarn exit side of the entanglement treatment device at intervals of 3 to 13 mm, and vibration of the yarn in the lateral direction is performed. A device adapted to constrain is shown.

On the other hand, in recent years, there have been many cases in which each process of spinning, drawing and processing is made continuous so as to rationalize the production. At that time, if the yarn is to be entangled, it is inevitable. Therefore, the yarn that runs at a high speed of 2,000 m / min or more must be treated. When attempting to impart entanglement to a yarn running at such a high speed with the above-described entanglement treatment device, it is necessary to inject a high-pressure compressed fluid of 3 kg / cm ² or more into the yarn to obtain a sufficient treatment effect. I can't.

However, in the conventional fluid entanglement treatment method as described above, when a high-pressure compressed fluid of 3 kg / cm ² or more is jetted, the compressed fluid passes through the thread guide hole and is jetted into the atmosphere from both ends thereof. At the same time, it expands rapidly and spouts and diffuses irregularly in all directions.

As a result, the traveling yarn is subjected to a strong turbulent action of the compressed fluid at both ends of the yarn guiding hole, in particular, a fluid action in a direction perpendicular to the traveling direction of the yarn, and the monofilaments constituting the yarn are formed. Because some of them are pulled away from the thread,
It will induce many loops. A yarn having a large number of loops has a serious problem that the loop is caught in a guide or the like in a post-processing step such as weaving or tufting as a pile yarn, and the operability is significantly reduced. There is.

Further, in the above-mentioned Japanese Patent Laid-Open No. 57-95332, it is very difficult to thread the yarn in order to perform high-speed yarn treatment, and only low-speed and discontinuous yarn treatment is possible. There is a big problem. In addition, since the yarn guide tubes on the yarn entry side and the yarn exit side and the fluid treatment device are separate, it is difficult to align the centers thereof, and if yarn treatment is performed at high speed, this defect may cause fatal confounding.

[0008] In recent years, it has been increasing particularly in carpets that mixed fibers are entangled or entangled in a separate step. In this case, the yarn processing apparatus as described above consumes a large amount of fluid, resulting in an increase in cost, which is a serious problem. Further, the above-mentioned misalignment of the center between the yarn guide tube and the fluid treatment device causes fatal mixed fiber spots (color pattern flow), which is a problem. Furthermore, in the conventional fluid treatment method or device, the yarn is blown to one wall surface of the yarn guide hole, and thus the fiber cannot be opened well at the center of the yarn guide hole where the injection hole is located.
For this reason, there is a problem that entanglement is likely to occur at that portion.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional fluid treatment device as described above, simplify threading to the fluid treatment device even at high speed, and to provide a thread guide center. Can be securely fixed, and even when a high-pressure compressed fluid is jetted to the running yarn for processing, uniform entanglement treatment and looping of the yarn are performed.
The object is to provide an entanglement processing device which does not generate a lump and has good operability.

Another object of the present invention is to provide an entanglement treatment device capable of reducing the amount of fluid consumption when used at a low speed. Such an object can be achieved by the following constitution.

[0011]

That is, according to the present invention, a fluid injection hole orthogonal to the thread guide is opened in the thread guide hole, and a compressed fluid is orthogonal to the yarn running in the thread guide hole from the fluid injection hole. In a yarn entanglement treatment device which is designed to inject in the direction of the injection, a yarn guide hole having a circular or oval cross section is provided, and the cross-sectional area is 0.33 of the yarn guide hole cross-sectional area at both ends.
In the following, a thread guide hole with a length of 5 mm or more is provided in the center line direction, and at both ends of the thread guide hole, 1 /
A yarn entanglement treatment device characterized in that a discharge hole for discharging a compressed fluid having a total cross-sectional area larger than 3 is provided outside.

The present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view showing a specific example of the present invention.

In the figure, reference numeral 1 denotes a main body, and a thread guide hole 2 is bored in the center of the main body 1, and a compressed fluid injection hole 3 is opened in the thread guide hole 2.

Thread guide holes 4 and 5 having a smaller cross-sectional area than the thread guide hole 2 are provided at both ends of the thread guide hole 2 at both ends of the main body 1 in the direction of the center line. It forms the outlet 7. Compressed fluid is introduced into the thread guide holes 2 at both ends of the main body 1.
Emission holes 8 and 9 leading out from are provided.

The angle, the opening position, the shape, the numerical aperture, etc. of the fluid injection hole 3 can be appropriately changed depending on the purpose of processing the yarn.

On the other hand, it is preferable that the cross-sectional areas of the yarn guide holes 4 and 5 are as small as possible so that the yarn can freely pass therethrough and restrain the lateral vibration of the yarn. In this case, the cross-sectional area of the guide hole is at least ⅓ or less of the cross-sectional area of the thread guide hole 2, preferably about ¼ to 1/50.

Further, from the standpoint of preventing the occurrence of loops, it is preferable that the cross-sectional area Dmm ² is within the range satisfying the following equation with the denier De of the yarn. That is, it is necessary to make the guide hole as thin as possible according to the denier of the yarn, and the following formula shows the optimum value. By doing so, it is possible to prevent the jetted fluid from flowing out from the yarn guide hole, suppress the balloon, and suppress the generation of the loop.

De × (1 / 2,000) ≦ D ≦ De × (1/200) More preferably, the range of De / 1,500 ≦ D ≦ De / 500 is desirable.

Further, it is desirable that the length of the yarn guide hole is 5 mm or more. If this length is too short, the effect of suppressing the generation of loops is reduced and the vibration of the yarn and the balloon are suppressed. It is difficult to do so, and if there is such a balloon or vibration, the yarn will change its tension due to the vibration, and there will be a strong tendency for interlace variations and entanglement to occur. Further, it is preferable that the length of the yarn guide hole is optimally about 30 mm to 150 mm in order to regulate the vibration and eliminate the variation in the interface.

In particular, the total cross-sectional area of the fluid discharge holes 8 and 9 opening at both ends of the yarn guiding hole 2 is at least the cross-sectional area of the fluid injection hole 3 (when there are a plurality of injection holes, the total cross-sectional area). A larger size does not reduce the fluid treatment effect, and the fluid discharge from the fluid discharge holes 8 and 9 at both ends of the thread guide hole is smooth.
It is desirable to prevent the loop from being formed in the yarn and to make the degree of entanglement of the yarn uniform.

The fluid discharge hole is preferably horizontal with respect to the yarn guide hole, but the fluid discharge hole is not limited to this and can be appropriately changed.

The cross-sectional shape of the thread guide hole 2 may be circular, elliptical, polygonal, or the like, but more preferably one pair of opposite sides of an elliptical or rectangular shape is semicircular or arcuate. (Such shapes are generically abbreviated as oval shapes). In this case, it is effective to provide the discharge holes 8 and 9 so as to be symmetrically positioned at both ends of the thread guide hole on the major axis side. Such specific examples are shown in FIGS.

2 to 3 show the case where the discharge holes 8 and 9 are provided in parallel at both ends in the horizontal direction, FIG. 2 is a front view, and FIG. 3 is a side view in the direction of arrow AA 'in FIG. Is.

In the figure, a and b are respectively the short axis and long axis of the yarn guide hole, d ₁ is the diameter of the injection hole, d ₂ is the diameter of the yarn guide hole, and d ₃ is the diameter of the discharge hole. Further, as shown by the chain double-dashed line 10, it has a split type structure that can be divided in the central horizontal plane. When the thread is hooked (thread is threaded), the thread is released and the thread is put inside, and a crimping device and the like provided separately during operation (not shown). It is preferable that the main body 1 is crimped and confined by (1) because the thread hooking can be performed reliably and easily.

Further, the yarn guiding hole 2 and the yarn guiding hole 4 are arranged in the longitudinal direction.
You may provide the slit for thread introduction | transduction connected with. In this case, a lid may be attached as necessary to prevent the fluid from being discharged from the slit after the thread is hooked. For the sake of convenience, the same reference numerals as in FIG. 1 were used.

The yarn guide holes 4 and 5 are provided in the yarn guide hole 2 as described later.
By locating and fixing the yarn at the center of the yarn, the interlace can easily enter, and since the single yarn of the yarn is less likely to be scattered, it is less likely to become a loop, and the yarn and fluid are discharged more easily. Loops are less likely to occur because they can be separated. Also, for example, by restraining the thread guide hole to 5 mm or more, preferably 30 mm or more, the yarn balloon (vibration due to fluid injection) is controlled, and the tension fluctuation due to it is suppressed, so that the entanglement loss is reduced and uniform. This has the effect of applying a different interface. The yarn guide hole is also formed by inserting a circular pipe or a U-groove pipe, but in this case, by exchanging the circular pipe, it is possible to obtain an optimum hole diameter according to the yarn brand and size. Become.

[0027]

Next, the operation of the present invention will be described. In FIG.
The yarn Y for performing the entanglement treatment is provided in the yarn guide hole 2 through the yarn inlet 6
Is running in the direction of the arrow from the yarn exit 7. The high-pressure compressed fluid is jetted from the fluid jet holes 3 to the traveling yarn Y. The jetted high-pressure fluid is entangled with the yarn Y and then discharged to the outside from both ends of the yarn guide hole 2, that is, the fluid discharge holes 8 and 9.

At this time, in the device of the present invention, the yarn guide holes 4,
5 is directly connected to the yarn guide hole 2, so that the yarn guide holes 4, 5
The yarn Y can be protected from the compressed fluid ejected from the fluid discharge holes 8 and 9 into the atmosphere by the means, and the fluid discharged from the yarn guide holes 4 and 5 can be parallel to the yarn traveling direction. It is possible to reduce the turbulent flow action that causes the loop, especially the fluid action in the direction perpendicular to the yarn traveling direction. As a result, the loop formation of the yarn due to the fluid treatment is significantly suppressed.

Further, since the yarn guide holes 4 and 5 are directly connected to the yarn guide hole 2, it is possible to fix the vibration of the yarn inside the yarn guide hole 2 and to fix it at the center where the center does not come. As a result, the yarn Y can be uniformly entangled.

In particular, in the case of the shape shown in FIGS. 2 to 3, the yarn guide hole 2 and the fluid discharge holes 8 and 9 are well balanced, and the working fluid is effectively discharged, and the yarn guide holes 4 and 5 are provided. As a result, the yarn is fixed, and as a result, the yarn guide holes 4 and 5 serve as nodes as shown in FIGS. And then the interview
Evenly applied.

Further, since the yarn guide hole can prevent the balun from propagating to both ends of the nozzle, the tension is not changed due to the variation of the balun, so that a good product without entanglement loss is stabilized. Obtained. A compressible gas is preferable as the high-pressure compressed fluid, and air is usually used.

Since thread guide holes are formed in the main body of the thread hook, the thread can be threaded once to complete the operation.
It is not necessary to carry out threading work three times with the front guide tube, the interlace nozzle, and the rear guide tube as in Japanese Patent No. 57-95332. This thread hooking operation can be performed more easily by using the half-split structure, the slit structure or the like as described above. In addition, since the center of the guide hole and the nozzle body are fixed in the center, the resistance of the nozzle wall thread is small and the balun opening can be performed uniformly and reliably, so that a uniform interface is possible. Becomes

[0033]

EXAMPLES The present invention will be described below with reference to examples. Example 1 and Comparative Example 1 A 1,300 denier, 68 filament multifilament yarn made of nylon 6 drawn at a speed of 3,000 m / min was preheated by a heating roller at 190 ° C., followed by turbulent heating fluid flow. 4.5kg / for multi-filament yarn which was guided to the jet nozzle and kept in 25% overfeed condition
A heating steam of cm ² was jetted to crimp. This crimped multifilament yarn was continuously drawn at 2,400 m / min, and then 2.0% in the entanglement treatment device shown in FIG.
Was stretched, and compressed air of 6.0 kg / cm ² was sprayed on this to give entanglement, and then it was wound by a high-speed winder. The resulting yarn had a denier of 1,600 denier.

Here, in the entanglement treatment device, the diameter of the yarn guide hole 2 is 6 mm, the diameter of the fluid injection hole 3 is 4 mm, the length of the yarn guide holes 4 and 5 is 30 mm, the inner diameter thereof is 1.3 mm, and the fluid discharge hole. The diameters of 8 and 9 are 3 mm, and a total of 4 holes are opened at both ends of the yarn guiding hole 2.

The cross-sectional area of the fluid injecting hole is 12.6 mm ^2, the total area of the fluid discharge holes are sufficiently large and slightly more than twice the area of the fluid discharge hole at 28.3 mm ^2.

For the evaluation of the loop generation state in the yarn, the number of loops having a length of 2 cm or more and a height of 0.5 cm or more is determined by irradiating the yarn being wound with a strobe with a high-speed winder. The measurement was performed by counting and expressing the number of loops per 10,000 m.

As a result, the occurrence of loops was extremely small, and the operability when tufting as pile yarn for carpet was good (Example 1).

On the other hand, for comparison, a similar test was conducted with a conventional device (including a yarn guide hole and a fluid ejection hole) as shown in FIG. 6 which does not have a yarn guide hole and a fluid discharge hole. When I went, in this case the number of loops was 120 / 10,000m
When the tufts were piled into carpet pile tufts, the loops were caught by guides and the like, resulting in extremely poor operability. Moreover, there were many interlaced voids, and the yarn was very uneven (Comparative Example 1).

Example 2 Nylon-6 multifilament yarn of 2,100 de / 136 fil drawn at a drawing speed of 2,500 m / min was crimped under the same processing conditions as in Example 1 to give 2,000 m / mi.
It was taken out at n and subjected to an entanglement treatment using an apparatus as shown in FIGS. The resulting yarn has a denier of 2,500 de /
It was 136fil. At this time, the thread guide hole 2 has a diameter of a semicircle at both ends of 4.1 mm, the diameter of the fluid injection hole d ₁ is 5.2 mm, the lengths of the yarn guide holes 4 and 5 are 50 mm, and the inner diameter d ₂ thereof is 2.0 mm. The diameters of the discharge holes 8 and 9 are 3.0 mm, and 4 holes are opened at both ends of the thread guide hole, and the total area on both sides is 28.26 mm ² . The total area of the fluid injection holes is 21.33 mm ² . In this case, the number of loops generated was 5 pieces / 10,000 m, and other points were similar to or inferior to those in Example 1.

[Example 3, Comparative Example 2] A multifilament yarn of 1,300 de / 68fil made of nylon 6 drawn at a speed of 3,000 m / min was used to prepare two types of yarns having different dyeing properties.
It is preheated by a 190 ° C heating roller and then guided to a thermal fluid turbulent jet nozzle, and a heating steam of 6.0 kg / cm ² is jetted onto the 25% multifilament yarn kept in the overfeed state. Then, crimping is performed, and 3,200 de / 136 fil yarns are continuously
At 2,400 m / min, the yarn guide hole was 8 mm in diameter and the fluid injection hole was 6 mm in diameter with the entanglement treatment device shown in FIG.
After passing through a device with a yarn guide hole diameter of 2.5 mm and a fluid discharge hole diameter of 4 mm in a stretched state of 2%, blow compressed air of 5.0 kg / cm ^{2 to} this to give mixed fiber entanglement, and then high speed It was wound up by a winder. The yarn obtained had a denier of 3,200 de.

When the yarn thus obtained was evaluated as a carpet, a good contrast and fiber mixing property were obtained.
A carpet with a good texture was obtained. On the other hand, the yarn obtained by the entanglement imparting device as shown in FIG. 6 having no yarn guide hole has many entanglements, and the flow of the handle occurs as a carpet.
It became a carpet with poor contrast and fiber mixability.

[Examples 4 to 7 and Comparative Examples 3 and 4] Using the confounding apparatus shown in FIG.
When the entanglement treatment was performed on the nylon yarn of the leu with or without the yarn guide holes, the entanglement treatment devices having the yarn guide holes (Examples 4 and 5) showed the entanglement treatment device having no yarn guide hole (comparative example). 3), the interlace variation (C
V value)

[0043]

[Equation 1] In the comparison in Table 1, extremely good results were obtained as shown in Table 1.

Further, the results of the same test conducted by using the confounding processing apparatus shown in FIGS.
7).

[Examples 8-9, Comparative Example 5] Speed 2,500 m /
2,500 denier nylon yarns per minute by entanglement treatment, a device having thread guide holes at the front and rear (Example 8, FIG. 1), (Example 9, FIG. 2), device not used (Comparative Example 5) In comparison with Comparative Example 5, as shown in Tables 1 and 2, Examples 8 to 9 are different from each other in terms of I / L degree and variation degree of I / L degree.
Good results have been obtained.

[Examples 8 to 10 and Comparative Example 6] The cross-sectional area of the yarn guide hole is used for the entanglement treatment of 2,500 denier nylon yarn at a speed of 2,500 m / min using the entanglement treatment device of FIG. Was compared with 1/3 or more of the yarn guiding hole area (Comparative Example 6) and devices less than that (Examples 8 to 10), the cross-sectional area of the yarn guide hole was 1 / of the yarn guiding hole area. The apparatus of 3 or less (Embodiment 11) sufficiently regulated the vibration of the yarn, could sufficiently perform the entanglement treatment, and obtained good results regarding the interlace variation. In particular, in Example 9, the yarn guide hole has a cross-sectional area in the range of 2,500 de / 1,500 to 2,500 / 500 = 1.67 to 5.0 mm ^2. Therefore, there is little loss of the interface and the interface is uniform. (Table 1
~ 2).

[Examples 8 to 9, 11 and Comparative Example 7] In the confounding apparatus shown in FIG. 1 or 2, the speed of 2,500 m / min was 2,50.
0 When carrying out the entanglement treatment of denier nylon thread,
When the lengths of the yarn guide holes are compared, the device with a yarn guide hole length of 5 mm has a better interface than the device with a length of 3 mm.
Good results were obtained with less variation in lace.

In particular, in Example 8, the length of the yarn guide hole was as long as 30 mm, and the loss of the interface was further reduced. Further, as shown in Example 9, it can be seen that the one having a long length of 100 mm can regulate the balloon particularly at a high speed and can provide a very uniform interface (Tables 1 and 2).

[Examples 8 and 12 and Comparative Example 8] When performing the entanglement treatment of 2,500 denier nylon yarn at a speed of 2,500 m / min using the entanglement treatment apparatus of FIG. A device having an area of 1/3 or more of the area of the injection hole (Examples 8 and 1)
2) was compared with a device of 1/3 or less (Comparative Example 8), the discharge hole area was 1/3 or more of the fluid injection hole, and the interlace degree and the interlace were varied. Good results have been obtained. In particular, Example 8 in which the emission holes are 225% of the injection port is excellent in this respect (Tables 1 to 1
2).

Similar or even better results were obtained when the apparatus shown in FIG. 2 was used in Examples 3 and 10 to 12.

Here, the interlace degree X was measured as follows. Unwind the yarn from the seeds, about 120 cm
Cut off the length of, and apply a load of 10 mg / de to the lower end, and hang it vertically. 50mg / de with a hook from the top of this thread
The load is hung on the yarn so that the yarn is divided in half by the hook and dropped until the load stops, and the hook with the load is hung again at the stopped position, and the same operation is repeated. From this, calculate the number of times the hook has stopped per 100 cm, X _N. Repeat this 50 times,

[0052]

[Equation 2]

Maximum value Nmax and minimum value Nmin during 50 measurements
From R = Nmax-Nmin

[0054]

[Equation 3]

[0055]

As described above, according to the present invention, even when a high-pressure compressed fluid is jetted to a yarn running at a high speed to perform a confounding process, no loop is generated in the yarn, and weaving, It has a remarkable effect that it is excellent in operability in the post-process such as tufts and that a product of excellent quality can be stably obtained.

[0056]

[Table 1]

[0057]

[Table 2]

[Brief description of drawings]

FIG. 1 is a vertical section showing a specific example of the present invention.

FIG. 2 is a front view showing another specific example.

FIG. 3 is a side view of FIG.

FIG. 4 is an explanatory view of the operation of the present invention.

FIG. 5 is an explanatory view of the operation of the present invention.

FIG. 6 is a vertical cross-sectional view of a conventional device.

[Explanation of symbols] 1 main body 2 thread guide hole 3 fluid injection hole 4 thread guide hole 5 thread guide hole 8 discharge hole 9 discharge hole

Claims (1)

Claim: What is claimed is: 1. A yarn ejection hole orthogonal to the yarn guide is opened in the yarn guide hole, and a compressed fluid is orthogonal to the yarn traveling in the yarn guide hole from the fluid ejection hole. In a yarn entanglement treatment device for jetting, a yarn guide hole having a circular or oval cross section is provided, and the cross-sectional area is 0.33 or less of the yarn guide hole cross-sectional area at both ends thereof and the length is A thread guide hole of 5 mm or more is provided in the center line direction, and a discharge hole for leading out a compressed fluid having a total cross-sectional area larger than 1/3 of the cross-sectional area of the fluid injection hole is provided at both ends of the thread guide hole. A yarn confounding processing device characterized by the above.