JP2859543B2 - Apparatus for applying oil to yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for applying an oil agent to a continuously running yarn in a manufacturing process of a synthetic fiber yarn, and more particularly to a guide type measuring oiling device.

[0002]

2. Description of the Related Art In the production of thermoplastic synthetic fibers such as nylon and polyester, it is common practice to apply an oil agent to running yarn. The application of the oil agent improves the bundling property, smoothness, antistatic property, etc. of the yarn, stably performs production during spinning / drawing, and further performs weaving, knitting, and processing such as dyeing. It is extremely important in improving the product quality and preventing troubles.

[0003] In general, in order to apply an oil agent to a traveling yarn, a device is used that applies a lubricant to a yarn by rotating a roller having an oil film formed on its surface and bringing the traveling yarn into contact with the oil film. ing. In recent years, in order to stably perform high-speed yarn production, a certain amount of oil is supplied to various lubrication guides having a special shape that reduces running frictional resistance with the yarn, and the oil is supplied to the yarn. A guide type oil agent applying device for applying oil is widely used.

[0004] However, in the guide type oil agent application device, gas dissolved in the oil agent in the oil agent supply pipe often becomes bubbles due to a rise in temperature, a change in oil supply pressure, and the like. In addition, air bubbles may be generated in the oil supply pipe due to the incorporation of air bubbles from the connection portion of the pipe or the engagement of air bubbles by a metering pump for supplying a fixed amount of oil to the guide.

[0005] If bubbles are generated in the supply pipe in this manner, the discharge pressure of the oil agent becomes unstable due to this, causing a change in the amount of the oil agent discharged, and the oil agent adheres to the yarn. Spots occur. This phenomenon appears more conspicuously in response to an increase in yarn production conditions, causing fluctuations in yarn tension, breakage of single fibers, breakage of yarn, and the like, and causes poor dyeing properties during dyeing. For this reason, it is necessary to quickly discharge bubbles generated in the oil supply pipe from the pipe to the outside of the system.

[0006] Regarding the discharge of the bubbles generated in the oil supply pipe to the outside of the pipe system, see, for example, JP-A-61-27.
Japanese Patent No. 5412 proposes a device having a so-called "bubble bleeder" in which a branch pipe having an open system is provided between a metering pump and a refueling guide to release air bubbles from the branch pipe.

[0007] However, in this apparatus, since the air release section is provided in the middle of the oil supply pipe, the pressure is temporarily reduced when the bubbles are discharged, which tends to cause a change in the oil discharge amount. In addition, there are also problems such as a change in the concentration of the oil agent due to the accumulation of the oil agent near the open end and decay.

As described above, particularly in the guide-type lubrication method in which the contact frictional resistance with the yarn running at high speed is reduced, the fluctuation of the discharge of the oil can be reduced without causing the incidental problem. Doing so was an open question.

[0009]

That is, the problem to be solved by the present invention is as follows:
In order to uniformly apply an oil agent, an oil agent applying device that quickly separates and removes bubbles existing in an oil agent supply pipe from the oil agent and does not cause an incidental problem such as a change in oil agent concentration and decay. is there.

[0010]

According to the present invention, there is provided an oil supply guide for applying a metered amount of oil to a traveling yarn, a metering pump provided below the oil supply guide, and the metering pump. Pipe for supplying oil from the oil supply guide to the oil supply guide, and an air-tight air-collecting pipe provided below the oil supply guide in the middle of the liquid supply pipe and supplied with oil from the upper part of the pipe. An apparatus for applying an oil agent to a yarn comprising:

In the structure of the present invention, it is preferable that the bubble collecting tube is provided at least 0.2 m below the refueling guide, and it is further preferable that the bubble collecting tube can be turned by about 180 °.

[0012]

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

FIG. 1 is a schematic structural view (side view) illustrating an oil applying apparatus of the present invention.

In the figure, Y is a running thread, 1 is an oil storage tank, 2a is an oil supply main pipe, 2b is an oil supply branch pipe, 3 is a liquid feed pipe, 4 is a metering pump, 5 is an oil supply guide, Numeral 6 denotes an airtight air bubble collection tube.

In the oil dispenser configured as described above, the oil stored in the liquid storage tank (1) is supplied to the main oil supply pipe (2a). In general, the oil agent is applied to the traveling yarn (Y) with respect to the multi-filament yarn. Therefore, also in this embodiment, the oil agent supply is performed so that the oil agent can be supplied to the other weight yarns. The main pipe (2a) extends. Therefore, from the oil supply main pipe (2a) to the oil supply branch pipe (2).
b) is diverged for each weight, a metering pump (4) is installed, and a fixed amount of oil is supplied for each weight to a refueling guide (5) via a liquid feed pipe (3) indicated by reference numerals 3a and 3b. It can be supplied while measuring.

The bubble collecting tube (6) is provided with a liquid sending tube (3).
, That is, between the liquid feed pipe (3a) and the liquid feed pipe (3b). The installation position of the bubble collection tube (6) is below the oil supply guide (5), and the bubble collection tube (6) is positioned from the center of the oil supply discharge hole (not shown) of the oil supply guide (5). ), The distance to the center of the oil outlet is 0.
It is preferable to be separated by 2 m or more. The reason why the air bubble collection tube (6) is installed below the oil supply guide (5) is that air bubbles are collected by the air bubble collection tube (6) and the air bubble collection tube (6)
Is to prevent the bubbles in the bubble collecting pipe (6) from flowing into the refueling guide (5) due to an increase in the internal pressure.
Therefore, by setting the installation distance of the bubble collection pipe (6) long below the refueling guide (5), the refueling guide (5)
The effect of preventing air bubbles from flowing into the space is improved.

Next, a method of removing bubbles in the oil from the oil will be described in detail with reference to FIG. 2 (in which the bubble collecting tube portion is enlarged in FIG. 1). In the figure,
(A) shows a state before the bubble collection tube (6) is inverted, and this state is a normal operation state. In (B), the application of the oil agent is temporarily stopped, and the air bubble collection tube (6) is substantially
It shows a state in which it is inverted by 80 °. This reversal can be realized by rotating a rotation shaft (7) fixed to the bubble collection tube (6) around the axis. Needless to say, both ends of the rotating shaft (7) are rotatably supported to rotate the rotating shaft (7) around the axis.

In FIG. 2A, the oil agent sent from the metering pump (4) is dropped from above the bubble collecting tube (6). At the time of this dropping, the air bubbles (B) contained in the oil agent are separated from the oil agent and accumulated in the air bubble collection tube (6). On the other hand, the oil agent from which the bubbles (B) have been separated is
Due to the gas pressure in the bubble collecting tube (6), the gas is fed to an oil supply guide (5) from a discharge port provided at a lower portion of the bubble collecting tube (6).

In this way, bubbles are accumulated in the bubble collection tube (6), and the liquid level (L) in the bubble collection tube (6) is increased.
If 1) continues to decrease, a situation occurs in which bubbles in the bubble collection tube (6) are supplied from the liquid supply tube (3b) to the refueling guide (5).

In order to avoid the above-mentioned situation, when the liquid level (L1) of the bubble collecting tube (6) is reduced to some extent, the bubble collecting tube (6) is inverted by about 180 °. FIG. 2B shows this inverted state. In the state shown in the figure, the liquid level is restored by supplying the oil agent from the metering pump (4) to the bubble collecting tube (6). At the same time, the bubbles (B) collected from the oil discharge hole (not shown) of the oil supply guide (5) are released through the liquid feed pipe (3b). After performing such an operation, the bubble collection tube (6) is again moved to approximately 180
And the oil agent is dropped from above the bubble collecting tube (6). Then, after confirming that the dropped oil is pressure-fed from the outlet of the bubble collecting pipe (6) and rises in the liquid feeding pipe (3b), and the oil is supplied stably from the oil supply guide (5),
Return to regular operation. In this operation, the liquid feed pipe (3
It is important that b) is installed below the refueling guide (5). That is, the gas remaining in the liquid sending pipe (3b) can be completely expelled by raising the oil agent in the bubble collecting pipe (6).

As described above, the bubble collecting tube (6) of the present invention.
Is preferably made of a transparent container through which the inside can be seen, for example, a material such as transparent plastic or transparent glass, in order to check the accumulation state of bubbles inside. The diameter of the oil supply port at the top of the bubble collection tube (6) for allowing the oil to be dropped from above is larger than the diameter of the bubble collection tube body by one.
It is preferable to make it 0 times or more. Further, it is needless to say that an auxiliary rod which flows down while the droplet oil is being transmitted may be provided in order to prevent a new bubble from being generated by colliding with the lower oil surface when the oil is dropped.

Next, in order to confirm the performance of the oil applying apparatus according to the present invention, an experiment for trapping bubbles in the oil was carried out using the apparatus shown in FIG. In this device,
The bubble collecting tube (6) is provided at a distance of 1 m below the center from the center of the oil agent discharge hole of the oil supply guide (5) to the center of the oil agent outlet of the bubble collecting tube (6). ) Is 10 mm, which is 10 times the diameter of the liquid sending pipe (3a), and the total length is 100 mm.
mm.

The oil agent tank (1) has an oil agent concentration of 1
A 0% hydrous oil solution was prepared, and the metered oil solution was supplied to the liquid sending pipe (3a) having an inner diameter of 1 mm at a speed of 15 revolutions per minute by a gear pump of 0.1 cc / rotation. At this time, the refueling guide (5) is immersed in the water, the bubbles coming out of the refueling guide (5) are collected, the cumulative amount of generated bubbles (cc) is measured with time, and the air bubbles are collected. Amount of decrease in liquid level of the collecting pipe (6) (m
m) was also observed. This experiment was continuously performed for 120 hours.

Table 1 shows the results of the above-mentioned experiments. Examples of the table show the results of experiments conducted under the above-mentioned conditions using the apparatus shown in FIG. ) Was carried out under the same conditions as in the example, except that only the liquid sending pipes (3a) and (3b) were directly connected to remove the liquid sending pipes (3a) and (3b). In addition,
In the table, the cumulative amount of generated bubbles (cc) and the decrease in liquid level (mm) of the bubble collecting tube (6) were obtained for 24 hours (H).
r), and the liquid level drop (mm) is obtained by measuring the drop from the liquid level of the bubble collection tube (6) immediately before the start of this experiment, based on the liquid level. It is.

[0025]

[Table 1]

As is clear from the above experiment, no bubbles coming out of the refueling guide (5) were observed in the embodiment, whereas 1.3 cc was accumulated after 120 hours in the comparative example. Bubbles were generated. However, in the embodiment, the liquid level in the air bubble collecting tube (6) also decreased simultaneously, and after 120 hours, 18 m
m had occurred. Therefore, if the experiment is continued in this state, it is clear that the liquid level drops over 100 mm, which is the entire length of the bubble collecting pipe (6), and the collected bubbles flow into the oil supply guide. Therefore, it is necessary to release the trapped air bubbles when the liquid level has decreased to some extent, and this can be performed by inverting the air bubble collection tube (6) as described above.

[0027]

As described above, according to the present invention,
Air bubbles existing in the oil agent can be reliably captured and removed immediately before the oil supply guide (5), and the oil agent containing no air bubbles can be stably supplied to the oil supply guide (5). In addition, since there is no open end for letting the air bubbles escape into the atmosphere, there is no problem such as a change with time of the oil concentration or decay due to the accumulation of the oil in this portion. Therefore, the refueling guide (5)
The oil can be uniformly applied to the running yarn stably, and it has a remarkable effect on stabilization of the yarn-making process (reduction of breakage and breakage of single fiber), especially in high-speed range, or improvement of dyeing quality. To play.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram (side view) illustrating an oil applying device of the present invention.

FIG. 2 is a partially enlarged view of a bubble collecting tube section in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil tank 2a Oil supply main pipe 2b Oil supply branch pipe 3 Liquid feed pipe 4 Metering pump 5 Oil supply guide 6 Bubble collection pipe Y Traveling yarn

Claims (3)

(57) [Claims] 1. An oil supply guide for applying a metered oil to a running yarn, a metering pump provided below the oil guide, and a liquid supply for supplying the oil from the metering pump to the oil guide. A device for applying an oil agent to a yarn comprising a tube and an airtight air bubble collection tube provided below the oil supply guide in the middle of the liquid supply tube and supplied with an oil agent from above. 2. The air bubble collecting tube is connected to an oil supply guide of 0.2.
2. The apparatus for applying oil to a yarn according to claim 1, wherein the oil agent is provided at least m below. 3. The apparatus for applying oil to a yarn according to claim 1, wherein said bubble collecting tube is capable of being turned around by about 180 °.