JPS61275412A - Device for measuring and supplying finishing oil - Google Patents

Abstract

PURPOSE:To remove foams admixed in a finishing oil to be fed to an oil feed guide, by setting a three-way branch part in a specific state between the extrusion hole of the oil feed guide and a downward oil supply pump. CONSTITUTION:The three-way branch part 6 is set in the middle of the oil feed piping 5 at a position with a height between the extrusion hole 2 of an oil feed guide and the oil supply pump 4. The upper branch 6A is connected to the open end 8A at a position higher than the extrusion hole 2 of the oil feed guide, the horizontal or lower branch 6B is connected to the oil feed pump 4, and the horizontal or lower branch 6C is connected to the oil feed guide 1. Foams are wholly made to flow to the upper branch 6A, not to the branch 6C, so that the foams admixed in a finishing oil to be fed to the oil feed guide 1 can be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in a metering and lubricating device that applies a metered amount of lubricant to a running yarn using a lubricating guide.

[Prior Art] After melt-spun spun yarn is cooled and solidified, it is generally practiced to apply a spinning oil agent consisting of a surfactant, a smoothing agent, etc.

This spinning oil is applied not only to stabilize operability during melt spinning and to stabilize yarn quality, but also to prevent troubles during high-order processing and create high-quality final products (fabrics, etc.). This is extremely important.

In recent years, as yarn running speed during spinning has improved significantly, problems with friction between the yarn and guides and single yarn wrapping around rotating bodies have become more likely to occur.In order to prevent these problems, yarn There is a strong desire to more uniformly apply a fixed amount of oil to the strips.

Therefore, in order to apply a uniform amount of this lubricant, a guide oiling system has been generally used in place of the roller oiling system for high-speed silk spinning (Japanese Patent Application Laid-Open No. 112017/1984, etc.).
.

However, in the conventional guide lubrication system, as shown in FIG. 5, the lubricant supplied from the lubricant tank is made to flow at a constant flow rate using the metering pump 4, and this fixed flow is sent to the lubricant guide 1 through the lubricant supply pipe 5. Since the mechanism is such that the oil is discharged from the discharge hole 2 of the oil supply guide and applied to the running yarn, gas dissolved in the oil may appear as bubbles, and air may escape from the joints in the system. If air bubbles get mixed into the oil in the system due to leakage, these air bubbles are directly sent to the discharge hole of the oil supply guide, causing a so-called lubricant shortage condition in which the oil supply is temporarily cut off. In this state of running out of lubricant, the lubricant does not adhere to the running yarn, so even if the lubricant runout is instantaneous, it may cause spots of lubricant adhesion, causing single yarn cracks, fuzz, or fuzz on the take-up roller. This will lead to troubles such as thread cutting.

The uneven adhesion of the lubricant due to these mixed air bubbles becomes more noticeable as the spinning speed increases, so it has been strongly desired to eliminate the mixed air bubbles in guide oil supply during high-speed spinning.

However, it is not easy to remove air bubbles once they have entered the system, and air bubbles in the piping after the oil supply pump are forcibly expelled from the discharge end by applying vibrations and shocks to the piping when spinning is interrupted. was the actual situation.

[Problems to be Solved by the Invention] Therefore, the present invention provides a metered lubrication system that can automatically remove air bubbles that have entered the system from the refueling tank to the refueling pump and the refueling guide before reaching the refueling guide. Its main purpose is to provide equipment.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a lubricating guide 1 that performs lubricating treatment of the running yarn Y by discharging lubricant from the discharge hole 2, and a lubricating guide 1 that is lower than the lubricating guide. In a metering and lubricating device having a lubricant supply pump 4 installed at a position, and a lubricant feed pipe 5 that connects the lubricant pump and the lubricant guide, the lubricant feed pipe is located in the middle of the lubricant feed pipe. , and at a height between the discharge hole of the refueling guide and the refueling pump, a three-way branch part 6 that branches into three directions: upward, horizontal or downward, and horizontal or downward,
The upper branch 6A is connected to the opening @8A at a position higher than the discharge hole of the oil supply guide, one of the horizontal or lower branches 6B is connected to the oil supply pump, and the other horizontal or lower branch 6C is connected to the oil supply pump. A metering oil supply device, characterized in that it is arranged so as to be connected to each of the oil supply guides,
Consisting of

FIG. 1 and FIG. 2 are schematic longitudinal sectional views showing embodiments of the metering and lubrication device according to the present invention, and the following description will be made with reference to these figures.

The running yarn Y travels in contact with the discharge hole 2 of the oil supply guide 1, and is treated with the spinning oil that continuously flows out from the discharge hole 2. Here, the lubricant flows from a supply tank (not shown) through a supply pipe 3 to a lubricant pump 4, is fed as a constant flow by the lubricant pump, passes through a lubricant feed pipe 5, and then flows into a lubricant guide. It reaches 1.

[Function] In the present invention, the oil supply pipe 5 has a specific structure in order to handle air bubbles in the oil. That is, the three-way branch section 6, which branches into three directions, upward, horizontal or downward, and horizontal or downward, is located in the middle of the oil supply pipe 5 and between the discharge hole 2 of the oil supply guide and the oil supply pump 4. The three-way branch 6 has an upper branch 6A connected to an open end 8A at a higher position than the discharge hole 2 of the refueling guide, and a horizontal or lower branch. One of the (
>6B, called the first branch, is connected to the oil supply pump 4, and the other horizontal or downward branch (>60B, called the second branch)
is connected to refueling guide 1.

With this structure, the oil flowing upward from the oil supply pump 4 enters the three-way branch from the first branch 6B and is divided into both the upper branch 6A and the second branch 6C, but the upper branch 6A is Since it is connected to the open end 8A, the oil only rises to the same height as the discharge hole 2.
The oil will constantly flow towards the second branch 6C.

Here, if air bubbles are mixed in the oil agent, the air bubbles will be removed from the second branch 6 because the second branch 6C leading to the oil supply guide 1 is oriented horizontally or downward in the three-way branch 6.
It cannot flow towards C, but flows exclusively towards the upper branch 6A. Therefore, in this three-way branch portion 6, air bubbles mixed in the oil agent supplied to the oil supply guide 1 can be automatically removed (naturally evacuated).

Since the first branch 6B of the three-way branch is a branch on the oil inflow side, it must not be an upper branch in order to move the bubbles in the oil to the three-way branch, and as shown in Fig. 1.2. It is preferable to have a downward branch as shown in FIG.
It can also be a horizontal branch as shown in the figure.

Since the second branch 6C is a branch on the oil outlet side, it must not be an upper branch in order to prevent air bubbles from flowing out.
It is necessary that the branch be horizontal or downward.

In the present invention, the direction of branching is not expressed; downward or upward is
It means not only the vertical direction but also the diagonal direction. For example, in the case of the downward direction, it may be vertically downward or diagonally downward.

The branch direction of the upper branch 6A is preferably vertical or diagonally upward within 45 degrees from the vertical in order to improve bubble handling efficiency.

The difference Δh between the height of the branch point in the three-way branch 6 and the height of the discharge hole 2 of the oil supply guide is preferably made as small as possible in order to keep the amount of oil retained in the upper branch 6A direction low, but Δh is too small. If it is too large, bubbles cannot be handled sufficiently, so in practice, Δh should be 1 to 5.
It is preferable that it is about cm.

The height of the open end 8A needs to be higher than the discharge hole 2 of the oil supply guide in order to prevent the lubricant from flowing out from the open end. In order to prevent contaminants from entering through the open end 8A, a bent portion may be provided near the open end, or the open end may be surrounded by a non-sealed casing (see Fig. 3). (a), (b)). In the case of FIG. 3(a), the height H of the open end is expressed by the height of the bent portion, as shown.

F Example J A sulfuric acid nylon 66 chip having a relative viscosity ηr of 2.6 was melted at a melting temperature of 290° C., and then melt-spun through a discharge hole having a diameter Q of 3 mm and 10 holes. After the spun filament yarn was cooled by blowing cooling air at a temperature of 18°C and a speed of 30 m/min, it was heated to a concentration of 3% using a ceramic oil supply guide located 3.5 m below the discharge hole. A water-containing oil agent was supplied. Then, 2 rotates at a circumferential speed of 4200 m/min.
After winding half a turn around each Godet roller and taking it off, it is wound up using a cheese winder method with a winding tension of 12q,
A denier, 10 filament intermediately oriented yarn was obtained.

In this yarn reeling process, the oil supply guide is filled with 0, 1 cc/
rev's oil supply pump 26rl)m. It was supplied by a metered lubrication device.

At this time, the presence or absence of unevenness of oil discharge at the discharge hole of the oil supply guide can be checked by observing the change in gloss caused by the oil at the discharge hole, and the presence or absence of looseness of the traveling yarn on the take-up godet roller can be visually checked. I judged it. Roughly, just before the traverse fulcrum guide before winding, oil and moisture adhesion spots in the longitudinal direction of the running yarn are detected using an oil and moisture adhesion spot display device (YO) using an electrode terminal.
Made by 0GAWA-)IE LLET-PACKARD,
The measurement voltage was 25 V).

In addition, the number of thread breakages that occur during this spinning process is measured and expressed as the number of thread breakages per ton of boria.

As can be seen from the results shown in Table 1 and FIG.
It is possible to sufficiently prevent uneven discharge of the oil agent caused by air bubbles mixed in the oil agent, and as a result, fluctuations in the amount of oil attached to the yarn are greatly suppressed, and stable winding is possible without any scattering on the take-up roller. We were able to reduce thread breakage to less than half of the conventional level.

Moreover, when the three-way branch part 6 is provided at the same height as the discharge hole (
In N, 4), air bubbles sometimes got mixed into the oil agent from the open end 8A side, and it was not possible to suppress unevenness in oil agent discharge due to the mixed air bubbles.

[Effects of the Invention] When the running yarn is lubricated using the metering lubricating device according to the present invention, air bubbles mixed in the lubricant supplied to the lubricating guide can be efficiently removed. Uneven discharge of oil agent is prevented, and as a result, fluctuations in oil and water content on the yarn are greatly suppressed, and single yarn loosening and yarn breakage on the take-up roller are drastically reduced, improving operational stability during spinning and winding. improves.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view showing one embodiment of the metering oil supply device according to the present invention, and FIG. 2 is a schematic vertical cross-sectional view showing another embodiment. FIG. 3 is a schematic longitudinal cross-sectional view showing a slightly different embodiment of the three-way branch 6. As shown in FIG. FIGS. 4(a) and 4(b) are schematic vertical cross-sectional views illustrating another shape of the open end 8A. FIG. 5 is a longitudinal sectional view showing a conventional metering and feeding device. FIGS. 6(1), (2), and (3) are charts showing changes in the oil content attached to the yarns measured in Examples for four yarns. 1: Oil supply guide 2: Oil supply guide discharge hole 4: Oil supply pump 5: Oil supply pipe 6: Three-way branch 6A: Upper branch 6B, 6C: Horizontal or lower branch 8A: Open end Y2 Running thread

Claims (1)

[Claims] A lubrication guide that lubricates the running yarn by discharging a lubrication agent from a discharge hole, a lubrication pump for feeding the lubrication agent installed at a lower position than the lubrication guide, and a combination of the lubrication pump and the lubrication guide. In the metering lubrication device having a lubricant supply pipe that connects the lubricant supply pipe, an upper portion is provided at a position in the middle of the lubricant supply pipe and at a height between the discharge hole of the refueling guide and the oil supply pump. There is a three-way branch that branches horizontally or downwardly, and horizontally or downwardly, the upper branch is connected to the open end at a position higher than the discharge hole of the refueling guide, and one of the horizontal or downward branches is . The metering oil supply device, wherein the oil supply pump and the other horizontal or downward branch are respectively connected to the oil supply guide.