JPH09273023A - Oil application guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-application guide capable of stably and uniformly applying an oil to a running filament, thereby remarkably suppressing the generation of filament breakage and getting a filament having excellent quality. SOLUTION: This oil-application guide has a narrow part 6 to be brought into contact with a running filament Y and a filament-introducing slit 2 for introducing the running filament into the narrow part 6. The upper part of the narrow part 6 has a filament introducing hole 3 expanding upward, an oil-feeding hole 4 opened at a side of the filament introducing hole above the narrow part and feeding an oil to the filament introducing hole and an oil retaining groove 5 formed between the opening of the hole for feeding the oil to the filament introducing hole and the narrow part 6 for passing the filament in contact with the part. The groove is formed on the inner wall of the filament introducing hole along a face crossing the filament introducing hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber yarn spinning step, in which an oil agent is applied to a multifilament yarn that continuously runs in a non-focus state after being discharged from a spinneret. The present invention relates to an oil agent application guide for uniformly applying an oil agent, which is supplied in a fixed amount, to this running yarn while focusing the threads.

[0002]

2. Description of the Related Art In producing thermoplastic synthetic fibers such as nylon and polyester, it is common practice to apply an oil agent to running yarns. The application of this oil agent improves the binding property, smoothness, antistatic property, etc. of the yarn, and enables stable production during spinning / drawing, and further for processing such as weaving, knitting, and dyeing. It is extremely important to improve product quality and prevent troubles from occurring.

In general, in order to achieve the above-mentioned object, a certain amount of oil agent is supplied to various oil agent application guides having a special shape such that running frictional resistance with the thread is reduced, and the thread agent is supplied to the guide. An oil agent application guide is widely used for applying an oil agent to a yarn by causing the yarn to come into contact with the yarn.

As such an oil application guide, for example, in Japanese Utility Model Publication No. 7-7330, a V-shaped yarn converging groove is provided in a convex shape along the yarn traveling direction, and the yarn is formed at the bottom of the yarn converging groove. There has been proposed an oil agent application guide provided with two oil agent supply holes that communicate with each other along the traveling direction.

However, when an oil agent is applied to a yarn by this oil agent application guide, the oil agent is not provided between the guide contact surface of the thread to which the oil agent is abundantly supplied and the guide non-contact surface where the oil agent is insufficiently supplied. There is a problem that adhesion spots occur.
In order to solve this problem, it has been attempted to provide guides in two steps alternately so as to sandwich the traveling yarns, and thereby to eliminate oil agent adhesion unevenness between the guide contact surface and the non-contact surface. . However, such an oiling agent application guide requires two oiling agent application guides, so that when it is applied to a large number of yarns, the equipment cost increases. In addition, a complicated work is required for threading the oil application guide. Furthermore, when the yarn breaks, the lint easily collects on the oil agent application guide, and since the contact length between the yarn and the guide also doubles, the yarn breakage increases, especially when the yarn production speed is increased. It was not preferable.

[0006]

In view of the above-mentioned problems, an object of the present invention is to provide a stable and uniform application of an oil agent to a multifilament yarn running at high speed in the oil agent application step of synthetic fibers. An object of the present invention is to provide a guide for applying an oil agent, which is capable of significantly reducing the occurrence of filament breakage.

[0007]

According to the present invention, there is provided a narrow portion which a traveling yarn comes into contact with, and a yarn introducing slit for introducing the traveling yarn into the inside thereof, and An upper part of the narrow portion has a yarn introduction hole having a shape that spreads upward toward the upper side, an oil agent supply hole that opens to the side of the yarn introduction hole above the narrow portion and supplies an oil agent to the yarn introduction hole, And an inscribed portion on the inner wall of the yarn introducing hole, which is provided between the opening of the oil agent supply hole to the yarn introducing hole and the narrow portion where the yarn travels in contact with the yarn introducing hole, and which extends along the plane crossing the yarn introducing hole An oil application guide is provided that includes an installed oil reservoir groove.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view exemplifying the oil agent application guide of the present invention, and FIG. 2 is a sectional view taken along the line AA 'in FIG.

In the figure, Y is a running yarn made of multifilament (indicated by a broken line in the figure), and 1 is an oil agent application guide. The oil agent application guide (1)
It is configured to include at least a yarn introduction hole (3) having a yarn introduction slit (2), an oil agent supply hole (4), and an oil agent reservoir groove (5).

Here, the thread introduction hole (3) of the oil agent application guide (1) of the present invention is provided with a narrow portion (6) with which the yarn travels in contact with the narrow portion (6). A yarn introduction hole (3) having a hole is provided. Also, the narrow space (6)
The upper part of the has a shape that widens toward the top,
An oil agent recovery groove (7) is formed in the lower part thereof.

In the oil agent applying guide (1) configured as described above, the oil agent supplied in a fixed amount by a metering pump (not shown) is supplied to the thread agent introducing hole (3) on the side of the thread introducing hole (3). It is supplied from 4) to the yarn introducing hole (3), and an oil reservoir is formed above the narrow portion (6) of the yarn introducing hole (3).

Here, one of the main features of the present invention is that the portion between the opening of the oil agent supply hole (4) and the narrow portion (6) is along the cross section of the inner wall of the yarn introducing hole (3). There is an oil reservoir groove (5) carved so that both ends of the lever do not reach the yarn introduction slit (2). With this exquisite device, in the present invention, the uniform adhesion of the oil agent to the traveling yarn (Y) is realized as described below.

That is, the inventor of the present invention uses the oil agent applying guide having the thread introducing hole which does not have the oil agent collecting groove (5) as in the present invention so as to uniformly apply the oil agent to the traveling yarn (Y). I tried various ideas, but none of them succeeded. Therefore, as an oil agent application guide capable of stably forming an oil agent reservoir above the narrow portion of the yarn introduction hole, the oil agent application guide having the oil agent reservoir groove (5) is finally reached. The advantage of providing such a groove is to increase the contact area with the oil,
This increases the surface tension between the oil solution and the oil solution collecting groove (5), and thereby holds the oil solution in the oil solution collecting groove (5) stably.

In the present invention, the yarn contact length in the narrow portion (6) is preferably 10 mm or less, and particularly preferably 5 mm or less. Here, if the contact length of the yarn exceeds 10 mm, the yarn is likely to be damaged by friction with the guide wall, which is not preferable. Needless to say, it is preferable that the contact portion of the yarn has a low friction coefficient. Furthermore, the narrow part (6)
It is important to make the divergence angle (θ2) smaller than the yarn converging angle (θ1) so that the yarn passing through the yarn introducing hole does not come into contact with the divergent shape toward the upper end. Some things are natural. Furthermore, it is important that the slit width of the yarn introducing slit (2) satisfies the interval for stably introducing the yarn. If the interval is too wide, the oil agent is evenly distributed in the yarn introducing hole (3). In this case, the oil agent adheres unevenly on the side where the slit is formed and the side where the slit is not formed. Needless to say, this preferable slit width may be set at an appropriate interval depending on the number of filaments of the running yarn, denier, traveling speed, and the like.

[0016]

As described above, according to the present invention,
It is possible to apply the oil agent to the running yarns stably and uniformly without directivity, and the occurrence of filament breakage and the adhesion unevenness of the oil agent is reduced, which is extremely remarkable for stabilizing the spinning process and improving the quality of the obtained yarn. Has a great effect.

[Brief description of drawings]

FIG. 1 is a plan view illustrating an oil agent application guide of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG.

[Explanation of symbols]

 1 Lubricant application guide 2 Thread introduction slit 3 Thread introduction hole 4 Oil agent supply hole 5 Oil agent reservoir groove 6 Narrow portion Y Y running yarn

Claims (1)

[Claims] 1. A narrow portion with which the traveling yarn comes into contact and a yarn introducing slit for introducing the traveling yarn into the inside thereof, and an upper portion of the narrow portion has a shape that widens toward the top toward the top. A thread introduction hole, an oil agent supply hole that opens to the side of the thread introduction hole above the narrow portion and supplies an oil agent to the thread introduction hole, and an opening of an oil agent supply hole to the thread introduction hole Portion and a narrow portion where the yarn travels in contact with each other, and an oil agent applying guide including an oil agent reservoir groove formed in the inner wall of the yarn introducing hole along a surface crossing the yarn introducing hole.