JP2003041448A - Interlacing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interlacing device which can efficiently impart a uniform and high converging property to a traveling yarn in a state hardly developing fuzzes and loops, when a high pressure compressed fluid is jetted to the travel yarn to interlace the yarn. SOLUTION: This interlacing device in whose yarn guide hole a plurality of fluid-jetting hole groups (4) and (5) are opened and in which a compressed fluid is jetted from the fluid-jetting hole groups (4) and (5) to the yarn traveling in the yarn guide hole is characterized by disposing a slit (3) having a slight space for introducing the yarn into the yarn guide hole in the front side portion of the yarn guide hole (2) along the travel direction of the yarn, forming at least one of the fluid-jetting hole groups (4) and (5) on the slit (3) to overlap the space of the slit (3), and inclining the fluid-jetting hole groups (4) and (5) at an inclination angle θ1 to the travel direction of the yarn.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A method of injecting a fluid into running multifilament yarns to impart entanglement to the yarns is, for example, when weaving without twisting or sizing, or when yarns having different properties are used. Widely used for obtaining mixed fiber yarns.

To give an example of a processing method and an apparatus therefor, Japanese Patent Laid-Open Nos. 55-67030 and 55-6 are cited.
7029 gazette, or those proposed in JP-A-5-222640 can be mentioned.

By the way, in recent years, particularly in a water jet loom (water jet loom), high-speed rotation of 800 to 1000 rpm has been put into practical use due to improvement of weaving technology and technological innovation of loom. At that time, as the weaving speed is rotated at a high speed in this way, the multifilament forming the yarn is rubbed by the friction between the warps due to the high-speed movement of the heddle and the reed, or the friction between the warp and the heddle or the reed. The problem that it becomes easy to disperse has arisen.

If the multi-filament dispersion occurs in this manner, fluff due to the breakage of single fibers is likely to occur, and the loom stoppage increases and the fabric quality deteriorates. In particular, when a non-twisted and non-paste yarn which is easily distorted is used as a warp yarn, such a phenomenon becomes remarkable, and therefore it is required that the yarn has a high focusing property.

Further, in the false twisting process, especially in the simultaneous drawing and false twisting process, the speed has been increased (hereinafter also referred to as high speed drawing and simultaneous false twisting process), and in order to maintain the process performance under high speed conditions, Partially oriented yarn (POY) used for this
In particular, it is required to impart a high focusing property to the yarn.

Therefore, when a warp yarn to be used in the water jet loom as described above or a yarn for use in applications such as high-speed simultaneous drawing and false twisting is to be obtained by high-speed spinning, the multifilament forming the yarn is used. It is necessary to impart high focusing property (entanglement) to

However, when the confounding treatment is applied to the yarn running at a high speed exceeding 2500 m / min, the pressure is inevitably 0.2 MPa (2.0 kg / c).
There is a problem that sufficient focusing properties cannot be obtained unless a high-pressure compressed fluid of m ² ) or higher is jetted onto the yarn.

This also applies to a yarn used for high-speed simultaneous drawing false twisting and having a small amount of attached oil agent, in the case where entanglement is imparted and at the same time the oil agent is redistributed to make it uniform. is there.

However, the above-mentioned pressure is 0.2 M
The conventional entanglement imparting device for injecting a high-pressure compressed fluid of pa or more onto the yarn has a problem that the variation in the number of entangled imparted increases. In addition to that, there is also a problem that the number of loops and fluff generated in the yarn increases.

Moreover, particularly when the yarn is a polyester partially oriented yarn (POY), the fiber structure formation of the yarn such as the degree of orientation and the degree of crystallinity is still insufficient, and fluff is likely to occur. In the case of partially oriented yarn (POY), there is a problem that the pressure of the compressed fluid cannot be raised sufficiently.

Further, conventionally, when the entanglement-providing region of the entanglement treatment device is formed inside the through hole, it is necessary to deliver the yarn at both ends of the through hole when threading the through hole. It is said that Therefore, the workability of the through hole is significantly reduced, and therefore, a method of providing a slit for threading, a method of forming the entanglement imparting device into a half-divided structure, and the like have been proposed.

However, in such a conventional method, 2
When a high-pressure compressed fluid is jetted to a yarn running at a high speed exceeding 500 m / min, the yarn is vulnerable to abrasion damage that causes breakage of single fibers due to the following reasons. There is.

That is, it has been found that when a threading slit is provided in the through hole, fluff or a loop may be generated even if the running yarn only comes into contact with the end surface portion of the slit, particularly the edge portion. . In addition, even in the case of the half-split structure, it has been found that the same problem occurs when a slight step is formed at the joint where the half-split surfaces are pressure-bonded to each other.

[0015]

SUMMARY OF THE INVENTION The present invention has been made against the background of the above-mentioned prior art, and its object is to fluff or loop when a high-pressure compressed fluid is jetted to a running yarn to impart entanglement. It is an object of the present invention to provide an entanglement imparting device capable of efficiently imparting a uniform and high focusing property with extremely few occurrences of the above.

[0016]

According to the study by the present inventors, as means of the present invention for solving the above-mentioned problems,
“In a confounding device that opens a plurality of fluid ejection hole groups in a yarn guide hole and ejects a compressed fluid from the fluid ejection hole group to the yarn traveling in the yarn guide hole, A slit having a slight gap for introducing a yarn into the thread guiding hole is provided on the front surface of the thread guiding hole, and at least one hole of the fluid ejection hole group is slit so as to overlap with the slit. An entanglement imparting device "is provided which is formed on the upper side and is provided with the fluid injection hole group inclined with respect to the traveling direction of the yarn.

By doing so, a good entanglement imparting ability can be exhibited, the degree of damage to the yarn can be reduced as compared with the conventional method, and it is high with respect to the multifilament constituting the yarn. Focusability can be imparted.

At this time, the device of the present invention has a half-divided structure in which the half-divided surfaces formed in the slit portion are pressure-bonded to each other, and at least one hole of the fluid injection hole group is formed along the pressure-bonded bonding surface. It is preferable that the entanglement imparting device is formed so as to be inclined with respect to the running direction of the yarn, because a better entanglement imparting ability can be exhibited.

At this time, the device of the present invention further includes: 20 when the angle formed by the fluid injection hole group inclined with respect to the running direction of the yarn with the center line of the yarn guiding hole is θ1. ° ≤
It is preferable to set θ1 <90 ° because more satisfactory confounding can be performed.

Further, in the device of the present invention, regarding the fluid injection hole provided so as to overlap with the slit for threading, a supply hole for supplying a compressed fluid and a turning direction branching from the middle of the supply hole are provided. Providing a hole so that the compressed fluid supplied to the supply hole is supplied to the fluid injection hole through the diverting hole is a good entanglement even if a high-pressure compressed fluid is injected into the yarn. It is preferable because the imparting ability can be expressed.

At this time, it is more preferable that θ2 branched from the deflection hole or the supply hole is in the range of 20 ° <θ2 <85 °, and further, the supply hole located upstream of the branch portion of the deflection hole. It is preferable to form a retention zone for compressed fluid in the section.

With respect to the retention zone, when the length of the extending portion of the supply hole located upstream of the branch portion is L and the diameter of the supply hole is D, these L and D
Preferably satisfies the relationship of L ≧ 0.8D.
At this time, the width of the threading slit is 1 of the thread guide hole diameter.
It is preferably / 5 or less.

The pressure of the compressed fluid which is dexterous to the apparatus of the present invention is 0.2 MPa or more, and particularly 0.2 to 0.2 MPa.
Even at 0.6 Mpa, unlike the conventional confounding device,
Entanglement having a high focusing property can be imparted to the yarn without damaging fluff or the like.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an explanatory view (perspective view) for schematically explaining an example of the confounding device of the present invention. 2 is a top plan view of FIG. 1, and FIG. 3 is a view taken along the line XX in FIG. In addition, the XX arrow part shown by the dashed-dotted line in FIG. 2 also represents the "half-divided surface" mentioned later.

First, in FIG. 1, reference numeral Y indicates a yarn for entanglement processing. Further, reference numeral 1 is a main body of the entanglement imparting device including a pair of half parts 1a and 1b,
The pair of half-divided parts 1a and 1b are the above-mentioned "half-divided surfaces".
It is formed in mirror symmetry with respect to. In addition, the pair of half-divided parts 1a and 1b formed in mirror symmetry with respect to the half-divided surface,
It is crimped and fixed so that the half-divided surfaces come into close contact with each other by a fixture (not shown) such as a bolt.

At this time, a yarn guiding hole indicated by reference numeral 2 is provided in the central portion of the main body 1 of the entanglement device along the traveling direction of the yarn Y. Further, a slit 3 for threading is provided on the front surface of the main body 1 of the entanglement device so as to reach the thread guide hole 2 along the traveling direction of the yarn Y. Therefore, the yarn Y is easily introduced from the slit 3 into the yarn guiding hole 2.

Next, the internal structure of the entanglement imparting device body 1 configured as described above will be described in detail with reference to FIGS. 2 and 3. In FIGS. 2 and 3, reference numeral 10 indicates a compressed fluid supply source (indicated by a two-dot chain line in the drawings), and the compressed fluid is supplied from the compressed fluid supply source 10 by a confounding device. 1a and 1b.

In FIGS. 2 and 3, the compressed fluid supplied from the supply source 10 is designated by reference numerals 61, 62 and 6.
It is supplied to the entanglement imparting device main body 1 from three locations through three first supply holes to three supply holes, which are each represented by 3.
It should be noted that the third supply hole 63 is formed in such a manner that one hole is divided into right and left halves on a half-split surface.
When a and 1b are brought into close contact with each other, they take the form of one hole.

This is also true in the thread guide hole 2 described above.
The same thing can be said because it is divided into two half planes.
Further, the slit 3 for introducing the yarn Y into the yarn guiding hole 2 in the direction shown by the arrow in FIG. 2 is also different from the case of the yarn guiding hole 2 having a hole form, but similarly, the left and right halves are divided. A slit shape is adopted when the members 1a and 1b are brought into close contact with each other.

At this time, the compressed fluids supplied from the first supply hole 61 and the second supply hole 62 are respectively converted into the turning holes 7.
The structure is such that the fluid is jetted from the fluid jetting hole 4 toward the yarn Y via 1 and 72. At this time, the fluid injection hole 4 opens in the yarn guiding hole 2 at an inclination angle θ1 toward the running direction of the yarn, and the deflection holes 71 and 7 are further provided.
As shown in the drawing, 2 is provided so as to join with each other on the most upstream side of the fluid injection hole 4.

The fluid injection hole 4 is divided into two parts by a half-split surface like the thread guide hole 2 and the third supply hole 63, and when the pair of half-split members 1a and 1b are brought into close contact with each other. It takes the form of a single hole.

Further, the compressed fluid supplied from the third supply hole 63 is directed from the fluid injection hole 5 to the yarn guide hole 2 at an inclination angle θ1 from the fluid injection hole 5 in the traveling direction of the yarn. It is open. Therefore, as shown in FIG. 3, the compressed fluid is ejected from the front and rear fluid ejection holes 4 and 5 to the traveling yarn Y at an angle of θ1 in the traveling direction of the yarn Y. .

By the way, the first supply hole 61 and the second supply hole 6
Deflection holes 71 and 72 are provided in the middle of 2 and branch toward the fluid injection hole 4 by changing the direction thereof at a branch angle of θ2. Further, the deflection holes 71 and 7
From the part where 2 and 2 respectively branch to the upstream side
The supply hole 61 and the second supply hole 62 are provided so as to extend, and the extended portion forms a retention zone for the compressed fluid.

The entanglement imparting device of the present invention configured as described above causes an increase in fluffs and loops even when a high-pressure compressed fluid of 0.2 to 0.6 Mpa is jetted onto the yarn Y. The main feature of the present invention is that it is possible to impart a uniform and high focusing property to a yarn running at a high speed exceeding 2500 m / min.

In addition, under high-speed spinning conditions of over 2500 m / min, the end face of the running yarn and the slit for threading, which is one of the factors that cause fluff and loop formation, or the joining part of the half split surface of the entanglement imparting device. In order to avoid contact with a slight stepped portion and to suppress the generation of fluff and loops, a fluid injection hole is provided so as to open from the direction of the corresponding portion to the thread guide hole.

Further, the present inventors have found that the compressed fluid diffusing out of the system of the entanglement imparting device under the above-mentioned yarn making conditions is also one of the causes of fluff and loop formation.
That is, of the compressed fluid that diffuses, the compressed fluid that diffuses in the direction opposite to the running direction of the yarn causes looseness in the running yarn at the inlet of the confounding device, and the yarn guide hole inlet comes into contact with the yarn. Causes fluff and loops.

In order to solve this problem, in the present invention, the fluid injection holes 4 and 5 are provided so as to be inclined toward the traveling direction of the yarn Y. The inclination angle θ1 is 20 ° ≦ θ1 <90.
It is preferable to set to °. At that time, if θ1 is 20 ° or less, the entanglement imparting performance is significantly reduced, which is not preferable.

The angle θ2 at which the turning holes 71 and 72 branch from the supply holes 61 and 62 shown in FIG.
If 2 is too small or too large, the effect of providing the retention zone is not sufficiently exhibited, which is not preferable.

Therefore, the branch angle θ2 is 20 ° <θ2
<85 ° is necessary, especially 45 ° ≦ θ2 ≦ 75 °
Is preferred.

If the length L of the retention zone is too short, the effect of retaining the compressed fluid cannot be sufficiently obtained, and the compressed fluid cannot be evenly jetted to the traveling yarns. Fluctuations in the number of entanglements given to the slabs increase, and the occurrence of fluff and loops also increases. Therefore, the length L of the retention zone needs to be 0.8 times or more (L ≧ 0.8D) with respect to the diameter D of the supply holes 61 and 62, and particularly 0.8D or more and 3.0D. Below (0.8D ≦ L
The range of ≦ 3.0 D) is preferable.

The first supply hole 61 and the second supply hole 62
Which relates the diameter D of the third supply hole 63 to the diameter d of the third supply hole 63
The value of / D is preferably 1/3 ≦ d / D ≦ 1/1 from the viewpoint of further increasing the uniformity of the compressed fluid sprayed on the yarn.

Further, in the present invention, the main body of the entanglement imparting device has a half-split structure, but this not only makes the threading work more efficient, but also the cleaning work that occurs as a result of continuous spinning for a long period of time. Or, it is necessary to make repair work easy and reliable.

However, if the opening width of the threading slit is too large, not only the leakage of the compressed fluid will increase, but also the jetting to the running yarn will become unstable, and the yarn will be imparted with a high focusing property uniformly. I can't do it. Therefore, the opening width of the threading slit needs to be 1/5 or less of the diameter of the thread guide hole.

The thread guide hole diameter, the fluid ejection hole diameter, the fluid ejection hole number, the flow path diameter, etc. are determined according to the material, fineness, number of filaments, or the required number of entanglements of the yarn to be entangled. It is of a nature that is appropriately set.

[0045]

The entanglement imparting device of the present invention described above can be replaced with a known device which is conventionally used for performing an entanglement imparting treatment on running yarns, and the pressure can be reduced to 0.2.
Even if a compressed fluid having a high pressure of up to 0.6 MPa is used, fluctuations in the fluid pressure and the amount of jetting are suppressed, so that stable entanglement can be provided, and fluff and loops are less likely to occur.

Further, since the re-distributability of the oil agent adhered to the surface of the fiber is also good, it is possible to suppress the uneven adhesion even if the amount of the oil agent adhered is reduced. As a result, high-speed weaving and high-speed drawing simultaneous false twisting processing are performed. It is possible to efficiently produce suitable fibers.

[Brief description of drawings]

FIG. 1 is an explanatory view (perspective view) for schematically explaining an example of a confounding device of the present invention.

FIG. 2 shows a (top) plan view of FIG. 1 of FIG.

FIG. 3 is a view on arrow XX in FIG.

[Explanation of symbols]

1 Entanglement giving device body 1a, 1b Half member 2 Thread guide hole 3 Threading slit 4, 5 Compressed fluid injection hole 61-63 Compressed fluid supply hole 71, 72 Deflection hole Y traveling yarn θ1 inclination angle θ2 Branch angle

Claims (9)

[Claims] 1. A entanglement imparting device in which a plurality of fluid ejection hole groups are opened in a yarn guiding hole, and a compressed fluid is ejected from the fluid ejection hole group to the yarn traveling in the yarn guiding hole. A slit having a slight gap for introducing a yarn into the yarn guide hole is provided on the front surface of the yarn guide hole along the direction, and at least the fluid injection hole group is formed so as to overlap the gap of the slit. An entanglement imparting device, characterized in that one hole is formed on a slit, and the fluid injection hole group is provided so as to be inclined with respect to the running direction of the yarn. 2. A half-divided structure in which half-divided surfaces formed in the slit portion are crimp-bonded to each other, and at least one hole of the fluid injection hole group is arranged along the crimp-bonded surface with respect to the traveling direction of the yarn. 2. The confounding device according to claim 1, wherein the confounding device is formed to be inclined. 3. An angle formed by a fluid injection hole group, which is inclined with respect to the running direction of the yarn, with the center line of the yarn guiding hole is θ.
When 1 is set, 20 ° ≦ θ1 <90 ° is satisfied.
Alternatively, the confounding device according to claim 2. 4. A fluid injection hole provided so as to overlap with the slit for threading, a supply hole for supplying a compressed fluid, and a deflection hole branching from the middle of the supply hole, the supply hole being provided. The entanglement imparting device according to any one of claims 1 to 3, wherein the compressed fluid supplied to the fluid is supplied to the fluid injection hole through the deflection hole. 5. The entanglement imparting device according to claim 4, wherein θ2 branched from the deflection hole or the supply hole is 20 ° <θ2 <85 °. 6. A retention zone for a compressed fluid is formed in a supply hole portion located upstream of a branch portion of the diversion hole.
The confounding device described. 7. When the length of the extending portion of the supply hole located at the upstream side of the branch portion in the retention zone is L and the diameter of the supply hole is D, L and D are L ≧ D. 0.8D
The entanglement imparting device according to claim 6, which is a retention zone satisfying the relationship of. 8. The entanglement imparting device according to claim 1, wherein a width of the threading slit is ⅕ or less of a diameter of the thread guiding hole. 9. The pressure of the compressed fluid is 0.2 to 0.6 Mp.
It is a, The confounding provision apparatus as described in any one of Claims 1-8.