JPH0874117A - Device for imparting oil to yarn - Google Patents

Abstract

PURPOSE: To provide an oil-imparting device capable of suitably removing air bubbles in the oil disturbing the stable extrusion of the oil and further capable of uniformly imparting the oil to a traveling yarn. CONSTITUTION: This device for imparting the oil to the yarn comprises an oil-supplying guide (5) for imparting the measured and supplied oil to the traveling yarn (Y), a measuring pump (4) disposed below the oil-supplying guide (5), an oil-delivering pipe (3) for supplying the oil from the measuring pump (4) to the oil-supplying guide (5), and an atmosphere-closed type air bubble-collecting pipe (6) in which the oil is dropwisely supplied from the upper side.

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 continuously running yarns in a synthetic fiber yarn manufacturing process, and more particularly to a guide type measuring oiling device.

[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.

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

However, in the guide type oil agent applying device, the gas dissolved in the oil agent in the oil agent supply pipe often becomes air bubbles due to a rise in temperature or a change in oil supply pressure. Further, air bubbles may be generated in the oil agent supply pipe due to the inclusion of air bubbles from the connecting portion of the pipe or the trapping of the air bubbles in the metering pump for supplying a certain amount of the oil agent to the guide.

If air bubbles are generated in the supply pipe in this way, the discharge pressure of the oil agent becomes unstable due to this, causing fluctuations in the oil agent discharge amount and causing the oil agent to adhere to the yarn. Spots occur. This phenomenon appears more conspicuously in response to the speeding up of the yarn making conditions, which causes fluctuations in yarn tension, breakage of single fibers, yarn breakage, etc., and also causes poor dyeing properties during dyeing. Therefore, it is necessary that the bubbles generated in the oil agent supply pipe be promptly discharged out of the system through the pipe.

Regarding the discharge of air bubbles generated in the oil agent supply pipe to the outside of the pipe system, for example, Japanese Patent Laid-Open No. 61-27.
In Japanese Patent No. 5412, there is proposed a device having a so-called "bubble eliminator" in which a branch pipe whose upper part is an open system is provided between a metering pump and an oil supply guide to remove bubbles from the branch pipe.

However, in this device, since the atmosphere release portion is provided in the middle of the oil agent supply pipe, the pressure temporarily drops when the bubbles are discharged, and this easily causes fluctuations in the oil agent discharge amount. In addition, there is a problem such as a change in the concentration of the oil agent due to the retention of the oil agent near the open end and decay.

As described above, particularly in the guide type oil supply method in which the contact frictional resistance with the yarn running at a high speed is reduced, it is possible to reduce the variation in the discharge of the oil agent without causing an incidental problem. It was an open question.

[0009]

That is, the problem to be solved by the present invention is that, for yarns traveling at high speed,
In order to uniformly attach the oil agent, it is possible to promptly separate and remove bubbles existing in the oil agent supply pipe from the oil agent, and to provide an oil agent applying device that does not cause incidental problems such as change in oil agent concentration and decay. is there.

[0010]

According to the present invention, a lubrication guide for imparting the metered oil to the running yarn, a metering pump provided below the lubrication guide, and the metering pump. Pipe for supplying an oil agent from the oil supply guide to the oil supply guide, and a bubble trap tube of an airtight system which is provided in the middle of the liquid supply pipe below the oil supply guide and to which the oil agent is dripped and supplied from the upper part thereof. A device for applying an oil agent to a yarn is provided.

Further, in the structure of the present invention, it is preferable that the bubble collecting pipe is provided below the refueling guide by 0.2 m or more, and further, can be inverted by about 180 °.

[0012]

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

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

In the figure, Y is a running yarn, 1 is an oil agent storage tank, 2a is an oil agent supply main pipe, 2b is an oil agent supply branch pipe, 3 is a liquid supply pipe, 4 is a metering pump, 5 is an oil supply guide, Reference numeral 6 denotes a bubble collecting tube having a closed atmosphere.

In the oil agent applying device configured as described above, the oil agent stored in the liquid storage tank (1) is supplied to the oil agent supply main pipe (2a). In general, since the application of the oil agent to the traveling yarns (Y) is performed on the yarns of multiple spindles, also in the present embodiment, the oil agent is supplied so that the oil agent can be supplied to the yarns of other spindles. The main pipe (2a) extends. Therefore, from the oil agent supply main pipe (2a) to the oil agent supply branch pipe (2
b) is branched for each weight, a metering pump (4) is installed, and a fixed amount of the oil agent is supplied to each oil weight guide (5) through the liquid delivery pipe (3) indicated by reference numerals 3a and 3b. Can be supplied while measuring.

The bubble collecting pipe (6) is a liquid feeding pipe (3).
In the middle, that is, between the liquid feed pipe (3a) and the liquid feed pipe (3b). The installation position of the bubble collecting pipe (6) is below the oil supply guide (5), and the bubble collecting pipe (6) is located from the center position of the oil agent discharge hole (not shown) of the oil supply guide (5). ), The distance to the center of the oil agent discharge port is set to 0.
It is preferable to separate them by 2 m or more. The reason why the bubble collecting pipe (6) is installed below the oil supply guide (5) is that bubbles are collected in the bubble collecting pipe (6) and the bubble collecting pipe (6) is
It is to prevent the bubbles in the bubble collection pipe (6) from flowing into the oil supply guide (5) by increasing the internal pressure of the.
Therefore, by making the installation distance of the bubble collection pipe (6) long below the refueling guide (5), the refueling guide (5)
The effect of preventing the inflow of air bubbles into the air is improved.

Next, a method for removing bubbles in the oil agent from the oil agent 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 the state before inverting the bubble collection tube (6), and this state is the normal operating state. Further, (B) temporarily stops the application of the oil agent, and removes the bubble collecting pipe (6) to about 1
The state in which it is inverted by 80 ° is shown. This reversal can be realized by rotating the rotating shaft (7) fixed to the bubble collecting pipe (6) around the axis. Needless to say, both ends of the rotary shaft (7) are rotatably supported in order to rotate the rotary shaft (7) around the axis.

In FIG. 2 (A), the oil agent sent from the metering pump (4) is dripped from above the bubble collecting pipe (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 air bubbles (B) are separated is
Due to the gas pressure in the bubble collecting pipe (6), the gas is fed to the oil supply guide (5) from the discharge port provided in the lower part of the bubble collecting pipe (6).

In this way, the bubbles are accumulated in the bubble collecting pipe (6), and the liquid level (L) in the bubble collecting pipe (6) is increased.
When 1) continues to drop, the bubbles in the bubble collecting pipe (6) are supplied from the liquid feeding pipe (3b) to the oil supply guide (5).

In order to avoid the above situation, when the liquid level (L1) of the bubble collecting tube (6) is lowered to some extent, the bubble collecting tube (6) is inverted by about 180 °. Fig. 2- (B) shows this inverted state. In the state shown in the figure, the liquid level (L2) is restored by supplying the oil agent from the metering pump (4) to the bubble collecting pipe (6). At the same time, the bubbles (B) collected from the oil agent discharge holes (not shown) of the oil supply guide (5) are released through the liquid delivery pipe (3b). After performing such an operation, again set the bubble collecting tube (6) to about 180
Invert and inject the oil agent from above the bubble collection tube (6). Then, after confirming that the dripping oil agent is pressure-fed from the discharge port of the bubble collecting tube (6) and rises in the liquid feeding tube (3b), and the oil agent is stably supplied from the oil supply guide (5),
Re-start normal operation. In this operation, the liquid transfer pipe (3
The fact that b) is installed below the refueling guide (5) plays an important role. That is, the gas remaining in the liquid feed pipe (3b) can be completely expelled by raising the oil agent in the bubble collection pipe (6).

The bubble collecting tube (6) of the present invention described above.
In order to confirm the accumulation state of bubbles inside, it is preferable that the container is made of a transparent container that allows the inside to be seen through, for example, a material such as transparent plastic or transparent glass. Further, the diameter of the oil agent supply port in the upper part of the bubble collecting tube (6) for dropping the oil agent from above is 1 from the tube diameter of the bubble collecting tube body.
It is preferable to make it 0 times or more. Further, it goes without saying that an auxiliary rod may be provided for flowing down the liquid lubricant while it is being transmitted, in order to prevent a new bubble from being generated due to collision with the liquid surface of the lower oil during the dropping of the oil.

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

The concentration of the oil agent is 1 in the oil agent tank (1).
A water-containing oil agent of 0% was prepared, and the measuring oil agent was supplied to the liquid feed pipe (3a) having an inner diameter of 1 mm at 15 rpm by a gear pump of 0.1 cc / rotation. At this time, the refueling guide (5) is submerged in water, and the bubbles generated from the refueling guide (5) are collected to measure the cumulative generation amount (cc) of the bubbles over time and to collect the bubbles. Amount of decrease in liquid level of collecting tube (6) (m
m) was also observed. In addition, this experiment was continuously performed over 120 hours.

Table 1 shows the results of the above experiments. In the examples of the table, the experiment was conducted under the above conditions using the apparatus of FIG. 1, and in the comparative example, the bubble collecting tube (6 ) Is removed and the liquid transfer pipes (3a) and (3b) are directly connected, and the same conditions as in the example are applied. In addition,
In the table, the accumulated bubble generation amount (cc) and the liquid level lowering amount (mm) of the bubble collection tube (6) are 24 hours (H
The liquid level lowering amount (mm) was measured for each r), and the lowering amount from the level was measured based on the liquid level of the bubble collection tube (6) immediately before the start of this experiment. Is.

[0025]

[Table 1]

As is clear from the above experiment, in the example, no bubbles were observed coming out of the fueling guide (5), whereas in the comparative example, after 120 hours, 1.3 cc of accumulated air accumulated. Bubbles were generated. However, in the example, the liquid level in the bubble collection tube (6) also decreased at the same time, and after 120 hours, 18 m
The liquid level of m was lowered. Therefore, if the experiment is continued in this state, it is clear that the liquid level drop exceeds 100 mm which is the total length of the bubble collecting pipe (6), and the collected bubbles flow into the oil supply guide. Therefore, it is necessary to allow the collected bubbles to escape when the liquid level is lowered to some extent, and this can be performed by reversing the bubble collecting tube (6) as described above.

[0027]

As described above, according to the present invention,
The 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 bubbles can be stably supplied to the oil supply guide (5). Moreover, since there is no open end for letting air bubbles escape to the atmosphere, there is no problem such as a change over time in the oil agent concentration due to the retention of the oil agent in this portion or spoilage. Therefore, the refueling guide (5)
It is possible to stably apply a uniform oil to the running yarns, and it is extremely effective for stabilizing the spinning process (reducing single fiber breaks and yarn breaks) or improving the dyeing quality, especially in the high-speed range. Play.

[Brief description of drawings]

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

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

[Explanation of symbols]

 1 Oil agent tank 2a Oil agent supply main pipe 2b Oil agent supply branch pipe 3 Liquid supply pipe 4 Metering pump 5 Oil supply guide 6 Bubble collection pipe Y Travel yarn

Claims (3)

[Claims] 1. A lubrication guide for applying the metered oil agent to the running yarn, a metering pump provided below the oil guide, and a liquid feed for supplying the oil agent from the metering pump to the oil guide. An apparatus for applying an oil agent to a yarn, which comprises a pipe and a bubble trap tube of an airtight system, which is provided below the oil supply guide in the middle of the liquid supply tube and in which an oil agent is dripped and supplied from an upper portion thereof. 2. The bubble collecting pipe is connected to a refueling guide of 0.2
The device for applying an oil agent to a yarn according to claim 1, which is provided below m. 3. The device for applying an oil agent to a yarn according to claim 1 or 2, wherein the bubble collecting tube can be inverted by approximately 180 °.