JP2002266188A - Device for treating yarn by fluid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for treating a yarn by a fluid, hardly causing the attachment of dirt, and hardly reducing the interlacing function even if the dirt attaches the device. SOLUTION: In this device for treating the yarn by the fluid the yarn- contacting points of front and rear guides for regulating the traveling yarn in a yarn-treating part, and a shape of the yarn-treating part are symmetrical with respect to the plane A including the axis line of a fluid-jetting part and orthogonal to the yarn-traveling direction. The device is also characterized in that the shape of the yarn-treating part is symmetrical with respect to the plane B orthogonal to the plane A, and including the front and rear yarn- contacting points of the guides, and including the symmetrical axis of the cross section shapes of the yarn-traveling part and the fluid-jetting part cut by the plane A. The ratio L/d of the distance L between the yarn-contacting points of the front and rear guides at the yarn-treating part, to the length d in the yarn-traveling direction is regulated so as to be >=2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid treatment apparatus for performing entanglement treatment between filaments of a yarn composed of a plurality of filaments by the action of a fluid to impart convergence to the yarn.

[0002]

2. Description of the Related Art A yarn composed of a plurality of filaments that have not been twisted or glued has poor convergence. The filaments are entangled with each other, and the yarn breaks. A confounding process is performed to prevent these. In the confounding processing device,
By changing the shape of the yarn processing section in the running direction of the yarn, the sectional shape of the yarn path, the size, and the like, a high-performance yarn has been invented.

[0003]

Incidentally, the above-mentioned confounding apparatus is often used continuously for a long period of time, and there is a problem in that the confounding performance changes with time due to dirt.

[0004] For example, in the spinning process, the yarn is rubbed by the front and rear guides and the yarn processing section of the entanglement treatment device, whereby the oil agent attached to the yarn and the low polymer (monomer, oligomer, etc.) in the polymer are precipitated. Then, it adheres to the front and rear guide portion and the yarn processing portion. Further, the oil agent is scattered by the exhaust airflow from the fluid injection port, mixes with the precipitate, and the gelled substance adheres to the yarn processing section, the front-rear guide section, and the peripheral section.

In the draw false twisting step, an oil agent or low polymer in the polymer adhering to the yarn precipitates as powder and adheres to the front and rear guide portions and the yarn processing portion.

[0006] When dirt adheres to the front and rear guide portions, the fluid originally injected from the airflow injection port becomes turbulent in the yarn processing section, and is entangled with the yarn. Exhausted evenly. However, there is a problem that the exhaust flow balance is lost, confounding failure occurs, and the yarn is ejected from the yarn processing unit due to the generation of the exhaust airflow outward from the slit portion for inserting the yarn. The tendency is even stronger when the front-rear guide and the yarn processing unit are close to each other. In addition, the contamination of the yarn processing unit causes a change in the cross-sectional shape of the yarn path in a plane orthogonal to the yarn traveling direction of the yarn processing unit, resulting in an unstable airflow state and a problem of intertwining.

As a countermeasure against such a problem, dirt removal is performed. For example, water, solvents, compressed air, etc. are used to periodically clean and remove dirt by hand, but each time, it is necessary to cut the yarn and suspend production, increasing the workload and production costs. Is one of the causes.
On-line cleaning has also been proposed in which a liquid such as water and a gas such as air are mixed and ejected from a yarn fluid treatment device ejection port to wash the yarn treatment section, the front-rear guide section and the periphery thereof. In any case, production must be interrupted, and it is not a fundamental measure.

[0008] An object of the present invention is to optimize the structure of the yarn fluid treatment device so that even if dirt adheres to the yarn treatment section and the front and rear guide structure, the high-performance yarn fluid hardly deteriorates in entanglement performance. A processing device is not provided.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a yarn processing unit which entangles multi-filaments running with a fluid ejected from an injection port to impart convergence to a yarn; At least one fluid ejecting unit for supplying fluid to the yarn processing unit, a guide for regulating the yarn path of the traveling yarn is provided before and after the yarn processing unit, and the axis of the fluid ejecting unit is aligned with the yarn traveling direction. In the fluid processing apparatus made substantially perpendicular to the above, a yarn contact point position and a yarn of the front and rear yarn path regulating guides with respect to a plane (hereinafter referred to as a plane A) that includes the fluid ejection unit axis and is orthogonal to the yarn running direction. The fluid processing apparatus is characterized in that the processing section has a symmetric shape.

Further, a plane perpendicular to the plane A and including the yarn joining points of the front and rear yarn path regulating guides and including the symmetry axis of the cross section of the yarn running section and the fluid jetting section cut at the plane A. Hereinafter, it is preferable that the yarn processing section is symmetrical with respect to the plane B).

Further, the ratio L of the distance L between the yarn joining points of the front and rear yarn path regulating guides and the length d of the yarn processing section in the yarn traveling direction.
/ D is preferably 2 or more.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fluid processing apparatus according to the present invention comprises a yarn processing section for injecting a fluid onto a running yarn to perform a confounding process and a fluid for supplying a fluid from a fluid supply source such as a compressor to the yarn processing section. It is composed of an injection unit.

Usually, the yarn processing section is composed of a plurality of members. The cross-sectional shape of the yarn processing unit perpendicular to the yarn running direction is as follows:
Any type, such as a round, a missing circle, a semicircle, an oval, an ellipse, a triangle, a quadrangle, and a polygon, may be used. Any material may be used as long as it is durable to the running yarn, and metals, ceramics, glass, and those coated with a hard film are suitable. As the fluid to be used, compressed air, steam, and hot air are preferable.

Hereinafter, a yarn fluid treatment apparatus of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a schematic view showing an example of the configuration of a yarn fluid treatment apparatus according to the present invention. FIG. 2 is a sectional view when FIG. 1 is cut along a plane A. FIG. 3 is a cross-sectional view when FIG. 1 is cut along a plane B.

As shown in FIG. 1, the yarn fluid treatment device comprises:
Nozzle pieces 1a and 1b having a fluid ejecting section, thread processing section piece 2 forming a yarn processing section, nozzle pieces 1a and 1b
Body for fixing the yarn processing unit piece 2 by supplying a fluid to the yarn processing unit, and a front and rear guide 4 for regulating the yarn path to the yarn processing unit.
a, 4b, nozzle pieces 1a, 1b, a plate 5 for fixing the body 3 and the front and rear guides 4a, 4b. The nozzle pieces 1a, 1b and the body 3 are fixed by bolts 9, and the body 3 and the front and rear guides 4a, 4a
b is fixed by a bolt 10. The fluid is supplied from a fluid supply source (not shown) such as a compressor to the inlet 3a of the body 3, passes through the flow passage in the nozzle pieces 1a and 1b, and is ejected from the fluid ejecting units 1a 'and 1b'.
When the multifilament yarn 7 passes through the yarn processing unit 8, the multifilament yarn 7 is opened by the fluid from the fluid ejecting units 1a 'and 1b' and is entangled.

The yarn processing section is formed by a space surrounded by the nozzle pieces 1a and 1b and the yarn processing section piece 2 and has a semicircular shape in this example.
Any type of triangle, polygon, etc. is not required. In the case of this example, the nozzle piece 1 is used to introduce the yarn into the yarn processing section.
Although a slit is provided between a and 1b, the slit may be opened only when the yarn is introduced, and may be closed or closed in a case other than the above.

The material of the yarn processing unit piece 2 forming the yarn processing unit 8 may be any material that is durable to the running yarn, and may be metal, ceramic, glass, or a material coated with a hard film. Are suitable. The fluid used is preferably compressed air, steam or hot air.

According to the present invention, the fluid injection unit axes 11a, 11b
And the positions of the front and rear guide connecting points 4a 'and 4b' for regulating the yarn path of the running yarn in the yarn processing unit and the yarn processing unit with respect to a plane A which is perpendicular to the yarn running direction of the multifilament 7. 8 is a fluid processing apparatus characterized by having a symmetrical shape. Further, a plane B perpendicular to the plane A and including the front-rear guide threading points 4a 'and 4b' and including the symmetric axis 6 of the cross section of the yarn running section and the fluid jetting section cut at the plane A The shape of the processing unit 8 is symmetric.

As a result, the adhesion of dirt is symmetrical with respect to the surfaces A and B, so that the exhaust flow balance is lost, confounding defects occur, and exhaust air flow is generated from the slit for inserting the yarn. The yarn jumping out of the yarn processing unit due to the above is suppressed. In addition, the contamination of the yarn processing section changes the cross-sectional shape of the yarn path in a plane perpendicular to the running direction of the yarn in the yarn processing section, thereby suppressing unstable airflow and occurrence of confounding defects. You.

Further, the ratio L / d of the distance L between the front-rear guide yarn joining points of the yarn processing section and the length d in the yarn running direction is set to 2 or more, and the distance between the yarn processing section 8 and the front-rear guides 4a, 4b is increased. As a result, it is possible to make it difficult for dirt to accumulate in the gap, and to blow off the dirt to the outside, whereby it is possible to suppress a temporal change in the confounding performance. When L / d is less than 2, since the distance between the yarn processing unit 8 and the front and rear guides 4a and 4b is narrow, most of the exhaust airflow from the yarn processing unit 8 is high-speed and
a, 4b, so that dirt does not scatter outside and tends to accumulate. As a result, an exhaust airflow is generated from the slit portion for inserting the yarn, which causes jumping and confounding failure.
In addition, when the dirt comes in contact with the running yarn, the tension changes and the confounding performance decreases, the dirt is clogged in the fluid jetting parts 1a 'and 1b', the jet flow rate decreases, and the flow rate balance changes and the confounding defect occurs. appear.

[0022]

EXAMPLES Examples 1 and 2 Comparative Examples 1 to 3 Multifilaments obtained by applying an oil agent at 2 cc / min to a polyester filament yarn having 167 dtex and 48 filaments at a yarn traveling speed of 500 m / min were subjected to a compressed air pressure of 0. Under the conditions of 2 MPa and a yarn tension of 5 g before the confounding treatment,
The confounding process was performed using the fluid processing apparatus having the shape shown in FIGS.

FIG. 4 shows a first embodiment, in which a plane A containing the axis of the fluid ejecting section and perpendicular to the running direction of the yarn is defined.
FIG. 5 shows an example in which the yarn contact point positions of the front and rear yarn path regulating guides and the shape of the yarn processing section are symmetric and L / d = 3. FIG. With respect to a plane A perpendicular to the traveling direction, the positions of the yarn joining points of the front and rear yarn path regulating guides and the shape of the yarn processing section are symmetrical, and
= 1.7 is shown. FIG. 6 is a comparative example 1 in which the positions of the yarn joining points of the guides before and after regulating the yarn path are asymmetric (L1 <
L2), FIG. 7 shows Comparative Example 2, and shows an example in which the yarn processing section shape is asymmetric (d1 <d2). FIG. 8 shows Comparative Example 3, which includes the fluid ejecting section axis and runs the yarn. With respect to a plane A orthogonal to the direction, the positions of the yarn joining points of the front and rear yarn path regulating guides and the shape of the yarn processing section are asymmetric, and the plane A
An example in which the shape of the yarn processing section is asymmetric with respect to a plane B which is perpendicular to the plane and which includes the front and rear guide joining points and which includes the axis of symmetry of the cross section of the yarn running section and the fluid jetting section cut at the plane A.

The degree of confounding was measured 50 times using a confounding degree meter (R-2070: manufactured by Rosshield) according to the method described in JIS 1013, and the average was taken.

[0025]

[Table 1]

[0026]

As is clear from the above, in the fluid treatment apparatus of the present invention, the multifilament yarn is run, and the filaments are entangled with each other by the fluid ejected from the injection port so that the convergence to the yarn is achieved. A yarn processing unit that gives
In the fluid processing apparatus having at least one fluid ejecting unit that supplies a fluid to the yarn processing unit, a traveling yarn is provided to the yarn processing unit with respect to a plane A that includes the fluid ejecting unit axis and is orthogonal to a yarn traveling direction. The position of the front / rear guide yarn-joining point for regulating the yarn path of the yarn and the shape of the yarn processing section are symmetrical. Preferably, the yarn is orthogonal to the plane A and includes the front / rear guide yarn-attaching point, and is cut at the plane A. The shape of the yarn processing portion is symmetrical with respect to a plane B including the axis of symmetry of the cross-sectional shape of the running portion and the fluid jetting portion, and more preferably, the distance L between the front and rear guide joining points of the yarn processing portion and the length of the yarn running direction. By setting the ratio L / d to the length d to be 2 or more, it is possible to obtain a yarn fluid treatment apparatus in which the adhesion of dirt is suppressed and the entanglement performance does not decrease even if the dirt is attached.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a yarn fluid treatment device according to one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA ′ of the yarn fluid treatment device shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line BB 'of the yarn fluid treatment device shown in FIG.

FIG. 4 is a sectional view of a yarn fluid treatment apparatus used in Example 1.

FIG. 5 is a sectional view of a yarn fluid treatment apparatus used in Example 2.

FIG. 6 is a cross-sectional view of the yarn fluid treatment device used in Comparative Example 1.

FIG. 7 is a sectional view of a yarn fluid treatment device used in Comparative Example 2.

FIG. 8 is a diagram of a yarn fluid treatment apparatus used in Comparative Example 3.

[Explanation of symbols]

 1: Overall yarn fluid treatment device 1a: Nozzle piece a 1b: Nozzle piece b 1a ': Fluid ejection unit a 1b': Fluid ejection unit b 2: Thread treatment unit piece 3: Body 4a: Front-back guide a 4b: Front-back guide b 4a ′: front and rear guide connecting point a 4b ′: front and rear guide connecting point b 5: plate 6: axis of symmetry 7: multifilament yarn 8: yarn processing section 9: bolt 10: bolt 11: fluid injection port 11a: Fluid ejection port axis a 11b: Fluid ejection port axis b 11a ': Fluid ejection port exit a 11b': Fluid ejection port exit b 12: Angle θ1 between ejection port axes 11a and 11b

Claims (3)

[Claims] 1. A yarn processing section that entangles multifilaments running with a fluid ejected from an injection port to give convergence to a yarn, and at least one fluid injection section that supplies a fluid to the yarn processing section. A fluid treatment device having a guide that regulates a yarn path of a traveling yarn before and after the yarn processing unit, wherein the fluid ejection unit axis is substantially perpendicular to the yarn traveling direction. A fluid processing apparatus, wherein a shape of a threading point processing portion of the front and rear yarn path regulating guides is symmetrical with respect to a plane (hereinafter referred to as a plane A) that includes an axis and is orthogonal to a yarn traveling direction. 2. A plane perpendicular to the plane A, including the yarn joining points of the front and rear yarn path regulating guides, and including the symmetry axis of the cross section of the yarn running section and the fluid ejection section cut at the plane A. 2. The fluid processing apparatus according to claim 1, wherein the shape of the yarn processing unit is symmetric with respect to the plane B). 3. The ratio L / d of the distance L between the yarn joining points of the front and rear yarn path regulating guides and the length d of the yarn processing section in the yarn running direction is 2.
The fluid processing apparatus according to claim 1, wherein: