JP3108178B2 - Multi-thread direct spinning and drawing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention spins a synthetic fiber yarn,
The present invention relates to a multi-filament direct spinning and stretching apparatus which performs stretching without first winding, and then winds or lays as it is and winds it as a mixed fiber.

[0002]

2. Description of the Related Art Hitherto, it has been well known to employ a direct spin drawing method in the production of synthetic fibers, and various methods have been proposed. More recently, spinning and drawing 2
Many attempts have been made to carry out the production of differentiated yarn, which has been carried out by a process method, by a combination of a direct spinning drawing method and a high-speed spinning method.

[0003] Among them, as a method for producing a mixed fiber, for example, Japanese Utility Model Publication No. 50-32574 discloses that two yarns are spun from a single spinneret and taken up by individual take-up rollers, followed by drawing and drawing. A method has been proposed in which drawing is performed under different heat treatment conditions, and then the yarn is twisted and wound up. Also, JP-A-59-13030
No. 9 discloses that one of the yarns is directly spun and drawn, and this yarn and the other yarn not subjected to the drawing heat treatment are joined to form a yarn of 3600 to 4800.
A method of winding at m / min has been proposed. Further, Japanese Patent Application Laid-Open No. 1-2221505 proposes a method in which adjacent two direct spinning and drawing apparatuses are spun and drawn under different drawing heat treatment conditions and the like, and then combined and wound.

[0004] However, these methods have the following problems. First, in the method described in Japanese Utility Model Publication No. 50-32574, since a large number of rollers are used, the control device for the rotation and temperature of each roller becomes large, the space for the device becomes large, the threading work increases, and the operability increases. There are problems such as deterioration and difficulty in manufacturing multifilaments. Also, JP-A-59-130
In the method described in Japanese Patent Publication No. 309, the yarn not subjected to the stretching heat treatment is drawn at substantially the same speed as the winding speed, so that the characteristic range of the yarn is narrow, the compatibility with the differentiated material is poor, and the heat drawing is not performed. Fabrics have problems such as differences in dyeing, uneven dyeing, and irritability. Further, JP-A-1-
According to the method described in Japanese Patent No. 221505, the productivity is inferior because a single mixed fiber is manufactured using two adjacent devices, the range of operation by moving is widened, and the yarn hooking work on the take-up roller increases. There are problems such as poor operability.

[0005] Therefore, for example, as a method of obtaining a mixed fiber, two yarn groups are spun from one spinneret, and
Similarly, it merges with the spun yarn group of the other weight, and
After forming the two yarn groups, as shown in FIG. 5, the yarn is taken up by one heating take-up roller via a threading guide, and then divided into two groups at the roller outlet, and each is led to a separate heated drawing roller. A method has also been proposed in which, after stretching, the two groups of yarns are combined so as to form a pair and then wound up. However, in this method, the two yarns to be combined are yarns of different weights, so that there is a problem that a fineness abnormality is likely to occur.

Further, in order to improve the efficiency of multi-filament spinning, a method of spinning a large number of yarns with one spinneret by controlling polymer distribution, nozzle accuracy, prevention of unevenness in heat retention, and the like has been often adopted. I have. However, in this method, it is difficult to completely eliminate variations in the filter media in the spinning pack, wear and use of the apparatus and changes over time, variations in operators, temperature control, and variations in the apparatus. Spots tend to occur on the skin.

[0007]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and is a compact apparatus which is applicable to the production of differentiated yarns such as single fiber yarns as well as various kinds of mixed fiber yarns. It is a technical object of the present invention to provide a multi-yarn direct spinning and drawing apparatus which can be easily threaded.

[0008]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and have reached the present invention.

That is, the present invention relates to a multi-filament direct spinning and drawing apparatus for synthetic fibers, comprising:
A yarn path guide device having a variable yarn passing guide position is provided in front of the two heating take-off rollers, and (b) two heat drawing rollers having a separation roller on the downstream side of the heat take-up roller are arranged in parallel or in a vertical position. (C) A multi-filament direct spinning / drawing apparatus characterized by providing a yarn bundling guide below the heating / drawing roller, and further arranging a winding machine.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the multi-yarn direct spinning and stretching apparatus of the present invention (two yarns are spun from four weights, respectively.
It is the schematic which shows the example at the time of manufacturing the mixed fiber of a book, and has provided the heating drawing roller up and down. FIG. 2 is an enlarged view of the vicinity of the yarn path guide device before the heating take-off roller in FIG. 1, and FIG. 3 is a yarn that combines yarns that have been individually drawn and heat-treated by the two heating and drawing rollers in FIG. It is an enlarged view near a focusing guide. FIGS. 4A and 4B are exploded perspective views showing the vicinity of a guide holder, a thread guide, a spring, and a guide plate which constitute the thread guide device.

In FIG. 1, two yarns A1 and B1 discharged from a spinneret S1 and A2 and B2 discharged from a spinneret S2 of another weight, and A3 discharged from a spinneret S3.
, B3, and the A4 and B4 yarns discharged from the spinneret S4 are cooled and solidified by the cooling device 2, and the oil applying device 3 applies the oil. Next, after regulating the distance between the yarns by the yarn path guide device 4, the yarn is taken up by the heating take-up roller 5, and then the yarn is wrapped (wound) several times around the heating take-up roller 5 and the separation roller 6, and the yarn is taken out at the roller exit. Divide the article into A and B groups.

Next, the yarn of one group is guided to the heat drawing roller 7 and the separation roller 8 and wrapped several times, and the yarn of the other group is guided to the heating drawing roller 9 and the separation roller 10 and wrapped several times. Then, after performing different kinds of stretching treatment by changing the magnification and temperature by the heating stretching rollers 7 and 9, the group A and the group B
A yarn bundling guide so that the heterogeneous yarns of the group form a pair.
The yarn is joined at 11, and then the package 13 is wound by the winding machine 12.
Get. Normally, the speed of the heat drawing rollers 7 and 9 is set to be higher than the speed of the heating take-off roller 5, and the film is drawn. Can also. Further, a fluid treatment device may be provided after the oil agent applying device 3 as needed, or an entanglement applying device, an after oil agent applying device, etc. may be provided before and after the yarn collecting guide 11.

Next, a yarn passing method in the yarn path guide device 4 before the heating take-off roller 5 will be described with reference to FIGS.

Two yarns A discharged from the spinneret S1
1 and B1 and the yarns A2 and B2, A3 and B3, and A4 and B4 discharged from the spinnerets S2, S3, and S4.
The yarn is divided into A1 to A4, and the first wrap position of each of the divided four yarns on the heating take-up roller 5 is in the order of A1, A2, A3, A4 and B1, B2, B3, B4 from the front side. The thread passing guides 14 (eight in this example) are arranged.

At this time, it is preferable that the distance between the yarns to be wrapped is a distance at which no yarn contact occurs due to the yarn sway.
2 mm or more is desirable. The distance between the four yarns is desirably 4 mm or more in view of the workability of dividing the yarn in the next step. The shape of the thread passing guide 14 is not particularly limited, but in order to set the above-mentioned interval, it is necessary that the guide position can slide freely and the wrap position and the distance between the yarns can be freely changed. .

An example of a method of sliding the thread guide 14 will be described with reference to FIG. A spring 18 is mounted on a side surface of a guide plate 16 on which the threading guide 14 is mounted, and corrugated irregularities 17 fitted to the spring 18 are provided on a guide holder 15 of the thread path guide device 4, and the threading guide 14 is attached. Slide the entire guide plate 16.

Next, a method of wrapping the yarn group from the heat take-up roller 5 to the heat drawing roller 7 will be described. At the exit of the heating take-up roller 5, the yarn group B (B1 to B4) on the far side is transferred to the heating stretching roller 7 and the separation roller 8, and wrapping is performed several times. At this time, if only one suction gun is used, one A group (A1
-A4) is preferably performed in a state where the position is regulated by a guide, a bar or the like (not shown) so as not to move. Further, group A (A1 to A
4), the yarn is transferred to the other heat drawing roller 9 and the separation roller 10, and when the wrapping is performed several times with only one suction gun as described above, the wrapped yarn group of the B group is used. It is preferable to control the position with a guide, a bar, or the like as described above. Further, at the exit of the heating take-up roller 5, the workability is good when the group B on the upstream side of the yarn group is first transferred to the heating and drawing roller.

Next, a description will be given of a method of combining yarns drawn individually by the heat drawing rollers 7 and 9.
In the final wrap, the yarn of the group B wrapped by the heat drawing roller 7 and the separation roller 8 is
1, A2, B3, and B4 are arranged in this order, and the yarns of the group A wrapped by the other heat drawing roller 9 and the separation roller 10 are A1, A1 from the roller front side in the final wrap.
They are arranged in the order of 2, A3, and A4, and are pulled out from each stretching and heating roller. Next, the yarns of A4 and B4, A3 and B3, A2 and B2, A1 and B1 are combined from the back side of the yarn collecting guide 11, and the four yarn groups are wound up. At this time, since the yarns to be combined are the yarns spun from one spinneret, abnormalities in the fineness of the obtained mixed yarn are avoided.

When a multi-filament yarn is produced by spinning multiple yarns with one large spinneret (for example, 8 yarns after spinning in a group of 16 yarns), there is a difference in fineness between the spun yarns. When this occurs, it is exchanged for a spare spinneret (spinning pack) as a normal measure. However, sometimes spare parts are insufficient and preparation time is required. Loss such as down and rest work time, polymer discharge at the time of re-spinning, etc. was accompanied by a large loss. However, if the apparatus of the present invention is used, for the above-mentioned trouble, the difference in the fineness of the 16 yarn groups is first detected, and the fineness of the mixed yarn is eliminated or the yarn combination with the smallest number of abnormal packages is selected. And
Next, by moving the thread guide 14 of the yarn path guide device 4 to the wrap position where the selected yarn is paired, the target mixed yarn can be easily obtained, and the loss can be eliminated or reduced.

The synthetic fiber which can be spun by the apparatus of the present invention may be any one made of a polymer which can be spun, but a polymer which can be melt-spun is particularly preferably used. Examples of the polymer include polyethylene terephthalate, polyesters such as polybutylene terephthalate, polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6, nylon 66, and copolymers and polymer mixtures containing these as a main component. No. For example, in the polyester, other components less than 15 mol%, for example,
Components such as 5-sodium sulfoisophthalic acid, isophthalic acid, adipic acid, diethylene glycol and polyethylene glycol may be copolymerized, and a matting agent,
It may contain additives such as an antistatic agent, a flameproofing agent and a pigment.

As the fiber form of the synthetic fiber, a single fiber or a composite fiber of a single component or a multi-component polymer, a single fiber or a composite mixed fiber of an irregular cross section or a hollow cross section fiber, and a different shrink mixed fiber A fine yarn, mixed fineness yarn and the like can be mentioned.

[0022]

Next, the present invention will be described specifically with reference to examples.

EXAMPLE 1 A triangular slit hole 48 was formed using the apparatus shown in FIGS.
Using a spinneret with four spindles perforated so that it can be divided into two,
The polyester polymer is melted and discharged, and the spun yarn is
As a group of 8 filaments of 24 filaments, four different shrinkage mixed fibers (75 denier / 48 filaments) were produced by low-speed spinning (spinning speed: 1400 m / min).

As a result, the fineness of the obtained hetero-shrinkage mixed fiber was within the range of the variation of the discharge amount of the gear pump and the variation of the applied amount of the oil agent, and there was no occurrence of abnormal fineness. In addition, the threading and threading was performed by one person, and the suction gun was easily used without loss by using a single suction gun.

[0025]

As described above, according to the multifilament direct spinning and stretching apparatus of the present invention, the number of rollers is small, so that the space for the apparatus and the control device for the rotation and temperature of each roller can be reduced, and the yarn hooking can be performed. The workability is small and the range of moving work is small, so it can be performed easily (the cost of compressed air for the suction gun is also reduced). Also,
It is possible to perform cold stretching without heating the hot stretching roller, or to perform fixed length heat treatment or relaxation heat treatment between the heating take-up roller and the heating stretching roller on yarns that have large orientation and do not require heating during stretching. It is possible to easily produce a differentiated material yarn such as a mixed fiber yarn with high productivity.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of a multifilament direct spinning and stretching apparatus of the present invention.

FIG. 2 is an enlarged view showing an embodiment in the vicinity of a yarn path guide device in FIG. 1;

FIG. 3 is an enlarged view showing an embodiment in the vicinity of a yarn bundle guide in FIG. 1;

FIG. 4A is an exploded perspective view showing one embodiment of the vicinity of a guide holder constituting the yarn path guide device. (B)
FIG. 2 is an exploded perspective view showing an embodiment in the vicinity of a thread guide and a guide plate constituting the thread guide device.

FIG. 5 is an enlarged view of a conventional thread guide.

[Explanation of symbols]

 2 Cooling device 3 Lubricant applying device 4 Yarn guide device 5 Heat take-up roller 6, 8, 10 Separation roller 7, 9 Heat drawing roller 11 Yarn bundling guide 12 Winding machine 13 Package 14 Threading guide 15 Guide holder 16 Guide plate 17 Wave-shaped unevenness 18 Spring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-147218 (JP, A) JP-A-58-203115 (JP, A) JP-A-1-156529 (JP, A) JP-A-3- 82842 (JP, A) JP-A-61-275420 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D01D 5/08-5/098 D02G 1/00-3/48 D02J 1/00-13/00 D01F 6/62 303

Claims (1)

(57) [Claims] In a multifilament direct spinning and drawing apparatus for synthetic fibers, (a) a yarn guide device having a variable yarn guide position is provided in front of one heating take-off roller having a separation roller; ) Two heating and stretching rollers having a separation roller downstream of the heating and take-up roller are provided in parallel or at upper and lower positions, (c) a yarn collecting guide is provided below the heating and stretching roller, and a winding machine is subsequently arranged. A multi-filament direct spinning and drawing apparatus characterized by the following.