JPH06171830A - Yarn feed package and cloth making method using the same - Google Patents

Abstract

PURPOSE:To improve productivity and at the same time make the making of quality textile goods possible by setting respectively within a specific range the bobbin innermost diameter and the bobbin width of the yarn feed package of warp for a shuttle-less weaving machine having a high speed warp release speed. CONSTITUTION:As a yarn feed package for warp of a high speed shuttle-less weaving machine whose warp release speed is 800-1300/minute, a yarn feed package of 40-150mm bobbin innermost diameter and 70-280mm bobbin width is used. The bobbin innermost diameter refers to the minimum outer diameter D of a paper tube or a bobbin or the like that is a core material 1. In the case of the taper core material 1, the outer diameter D of a small diameter side portion is referred to. Also, the bobbin width refers to the axial length L of the winding around sphere of yarn on the core material 1. As for the winding form of the yarn feed package, a pirn form, a cheese form or a cone form that are generally used for feeding warp, are adopted. As a result, the improvement of productivity and the quality of cloth at high speed cloth making can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a weft release speed of 8
The present invention relates to a yarn feeding package used for weft yarn feeding of a high-speed shuttleless loom of 0 to 1300 m / min and a weaving method using the same.

[0002]

2. Description of the Related Art In the past, most general shuttleless looms were operated at a loom speed up to about 600 rpm. The weft release speed at such a loom rotational speed is up to about 800 m / min. The weft supply package used in this general shuttleless loom is wound in a winding form such as pan, corn, and cheese that is easy to pull out and release. The inner diameter and the width of the bobbin are not specially adjusted.

By the way, recently, the number of revolutions of the loom is rapidly increasing due to the automatic innovation of the loom and the unmanned rationalization of weaving, and the shuttleless loom operating at the loom revolution speed of 800 to 1000 rpm is also a reality. Has become.
Under such a loom rotational speed, the weft release speed is 1000 m
The speed exceeds / minute.

The yarn feeding package used for the weft yarn feeding of the high speed shuttleless loom is not particularly considered for the high speed shuttleless loom, and the yarn feeding package used in a general shuttleless loom is as it is. It is used.

[0005]

However, in high-speed weaving such as in a high-speed shuttleless loom, weft breakage,
The number of stop bases (hereinafter referred to as “weft-caused stop bases”) such as insufficient weft supply and dead stop increases, which causes a problem that productivity is not improved even if high-speed weaving is performed. In addition,
Weft unevenness and the like (hereinafter referred to as "weft defect") are likely to occur, and the fabric quality may be degraded.

According to the present invention, the cause of troubles in the weft yarn feeding system, such as the frequent occurrence of weft-caused stop blocks and the occurrence of weft defects in a shuttleless loom for high-speed weaving, is clarified and corrected to correct the problem. The purpose of the present invention is to improve the productivity and the quality of the woven fabric, as well as to enable further high-speed weaving.

[0007]

Therefore, in the invention of claim 1, the weft release speed is 800 to 1300 m /
A weft-feeding package for a shuttleless loom, having a bobbin innermost diameter of 40 to 150 mm and a bobbin winding width of 70 to 2
The yarn supply package is in the range of 80 mm.

Further, in the invention of claim 2, as a weft supply package for a shuttleless loom having a weft release speed of 800 to 1300 m / min, the innermost diameter of the bobbin is 40 to 150 m.
m, and a weaving method using a yarn supply package having a yarn winding width of 70 to 280 mm.

The present invention will be further described.

The innermost diameter of the bobbin in the present invention means the minimum outer diameter D of the paper tube, bobbin or the like which is the core material 1 around which the thread is wound, as shown in FIG. Specifically, as shown in (a), when the core material 1 has an equal diameter over the entire axial length, the outer diameter D is referred to, and as shown in (b), the diameter of the core material 1 Is a taper shape that gradually decreases or increases in the axial direction, the outer diameter D of the small-diameter side end portion.

The thread winding width in the present invention refers to the axial length L of the thread winding region on the core 1, as shown in FIG. Further, the winding form of the yarn supplying package in the present invention may be one that is generally used for weft yarn supplying, and for example, the pan of FIG. 2A, the cheese of FIG. 2B, the cheese of FIG. It can be either corn.

By the way, the present inventors have noticed that the weft is pulled out from the yarn supply package at an extremely high speed,
The present invention has been made by discovering that the cause of troubles in the weft supply system is the weft withdrawal process from the yarn supply package.

To explain further, as shown in FIG.
The weft yarn for the shuttleless loom is pulled out from the yarn feeding package 2 substantially in the axial direction of the yarn feeding package 2, is once wound around the weft yarn storage drum 4 via the weft yarn guide 3, and then is emitted from the weft inserting nozzle 5. To be done.

Since the yarn is removed from the yarn supplying package 2, the yarn wound forward in the yarn withdrawing direction is immediately withdrawn from the yarn supplying package 2, but is wound backward. As the yarn is pulled out while being rubbed with the yarn remaining in the yarn supplying package 2 for a long time, the yarn is separated from the yarn supplying package 2.

The difference in the rubbing length between the drawn-out yarn and the yarn remaining in the yarn supplying package 2 causes fluctuations in the tension of the drawn-out yarn. This tension fluctuation of the drawn yarn does not cause a noticeable obstacle at a general weft releasing speed, but the weft releasing speed is 800 to 130.
When the speed is increased to 0 m / min, tension fluctuations occur in a very short cycle, which is considered to be one of the causes of troubles in the weft feeding system.

Further, the drawing of the yarn from the yarn supplying package 2 is performed while the yarn supplying package 2 is rotated around its axis by the pulling force. When the winding diameter of the yarn supplying package 2 is large, a large rotational torque is likely to be applied to the yarn supplying package 2 so that a small rotating force is sufficient. Torque is less likely to be applied and a large force is required.

Therefore, as the yarn feeding package 2 becomes thinner by pulling out the yarn, a great force is required to pull out the yarn,
The tension applied to the thread also increases. Especially the weft release speed is 80
When the speed is increased to 0 to 1300 m / min, the yarn feeding package 2
In accordance with this, the yarn also rotates at a high speed, and the tension of the drawn yarn, which increases as the yarn feeding package 2 becomes thinner, also increases, which is one of the causes of the trouble of the weft yarn feeding system. Conceivable.

The present invention has a great feature in that the optimum bobbin width and bobbin winding inner diameter are determined in order to eliminate the cause of the occurrence of troubles in the weft yarn feeding system at the time of releasing the high-speed weft as described above. The weft release speed means the traveling speed of the weft from the weft supply package 2 to the weft storage drum 4.

First, the width of the bobbin is 70 to 280 mm.
It is necessary to be 80 mm, and it is preferable to set it to 80 to 250 mm. If the thread winding width is too long, the difference in tension applied to the drawn thread becomes large when the thread wound at the front end and the thread wound at the rear end in the drawing direction of the thread become large. When the weft yarn is released, it fluctuates in a short period, which causes troubles in the weft yarn feeding system, that is, frequent occurrence of weft-caused stopping blocks and deterioration of the fabric quality due to weft defects. Also, if the yarn winding width is too small, the traverse speed of the winder when forming the yarn supplying package becomes high, and the winding form of the yarn supplying package itself becomes unstable, which causes troubles in the weft yarn supplying system. .

The innermost diameter of the bobbin is 40 to 150 mm
It is necessary that it is 50 to 150 mm. If the innermost diameter of the yarn winding is too small, a large tension is applied to the yarn drawn out when the yarn supply package is thin, which causes a trouble in the weft yarn feeding system. Further, if the innermost diameter of the bobbin is too large, it is not possible to form a yarn supplying package with a normal winder, and the practicality is lost.

The present invention can be applied regardless of the material of the yarn used. For example, it can be applied to any of synthetic fiber yarns such as polyester type, polyamide type and acrylic type, recycled fiber yarns such as cupra and rayon, and natural fiber yarns such as cotton and wool. However, a more remarkable effect is obtained when applied to a spun yarn that is more susceptible to tension than a filament yarn.

Further, in the present invention, the weft releasing speed is from 800 to
It is used for weaving by a shuttleless loom at 1300 m / min, and especially when the weft release speed is 1000-13.
A great effect is obtained when it is used for weaving by a shuttleless loom of 00 m / min.

[0023]

【Example】

Example 1 and Comparative Example 1 Water jet loom Z manufactured by Tsudakoma, using polyester 100D-48F cheese as a weft supply package.
Using the W-303 type, the number of weft stoppages and the occurrence state of weft defects in the obtained woven fabric were examined. The results are shown in Tables 1 and 2.

Each evaluation in this example and the comparative example was carried out based on the following criteria.

(1) Number of stopped vehicles due to wefts Based on the average number of stopped vehicles per day when operated for 3 days, the following criteria were used for evaluation.

◎: 0.5 times or less ○: More than 0.5 times and 1.0 times or less △: More than 1.0 times and less than 2.0 times ×: 2.0 times or more (2) Occurrence of weft defect State The obtained woven fabric was subjected to a sensory test and evaluated according to the following criteria.

◎: No weft defect ○: Weft defect tends to occur △: Weft defect occurs ×: Conspicuous weft defect

[0028]

[Table 1]

[0029]

[Table 2] Example 2 and Comparative Example 2 1/52 Nm of acrylic spun yarn was used as a yarn supply package,
The number of suspensions due to wefts was investigated using an air jet loom ZA-103 type manufactured by Tsudakoma. The results are shown in Table 3.

The evaluation of the number of stopped vehicles due to the weft in the present example and the comparative example was based on the average number of stopped vehicles per hour when operated for 3 days, and evaluated according to the following criteria.

◎: 0.5 times or less ○: 0.5 times or more and 1.0 times or less △: 1.0 times or more and less than 2.0 times ×: 2.0 times or more

[0032]

[Table 3]

[0033]

The present invention is as described above, and it is possible to prevent frequent occurrence of the weft-caused stop even when weaving is performed under the high-speed weft release of 800 to 1300 m / min. Since weft defects can be prevented, high-quality woven fabrics can be produced with high productivity.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a yarn supply package according to the present invention.

FIG. 2 is an explanatory diagram showing an example of a winding form of the yarn supply package according to the present invention.

FIG. 3 is an explanatory diagram of a released state of a yarn from a yarn supply package.

[Explanation of symbols]

 D bobbin innermost diameter L bobbin width 1 core material 2 yarn supply package 3 weft guide 4 weft storage drum 5 weft nozzle

Claims (2)

[Claims] 1. A weft supply package for a shuttleless loom having a weft release speed of 800 to 1300 m / min, the innermost diameter of which is 40 to 150 mm, and the width of which is 70 to 2.
A yarn feeding package characterized by being in a range of 80 mm. 2. A weft supply package for a shuttleless loom having a weft release speed of 800 to 1300 m / min,
Inner diameter of bobbin is 40-150mm, bobbin width is 70-280
A weaving method characterized by using a mm yarn feeding package.