JPS63227807A - Guide oiling device for traveling yarn - Google Patents

Abstract

PURPOSE:To prevent partial flow of finishing oil and to uniformly supply the finishing oil to yarn coming into contact with a vertical face connected to the lower end of an upward slant through which a spray nozzle of finishing oil is bored, by setting a protrusion to lead the finishing oil on the upward slant. CONSTITUTION:In a guide for traveling yarn also used as an oiling device provided with an upward slant 4 equipped with an outlet of an spray nozzle 2 for a finishing oil and a vertical yarn contact face 5 connected to the lower end of the slant, a protrusion 3 extending in the vertical direction to the outlet of the finishing oil spray nozzle 2 o the upward slant 4 or from the vicinity of the outlet to the lower end of the upward slant 4 or to the vicinity of the lower end is set and the finishing oil sprayed from the outlet is led to the yarn contact face 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a guide lubricating device for applying lubricant to running threads, such as lubricating in melt spinning of synthetic fibers. More specifically, the present invention relates to a guide lubricating device that is effective for uniformly lubricating running yarns and running the yarns in stable contact with each other on a lubricating guide.

[Prior art] In the process of melt-spinning synthetic fibers such as polyamide and polyester, an oil agent containing a lubricant, an antistatic agent, etc. is applied to the running yarn. Refueling guides have been widely used as a device for this purpose. Basically, this oil supply guide has an oil discharge hole that steadily discharges a measured amount of oil on the running yarn contact surface or an inclined surface above it, and the oil discharged from the oil discharge hole comes into contact with the running yarn. It applies the oil to the yarn running in contact with the surface of the roller, and has the advantages of being able to easily change the amount of oil supplied by changing the amount of oil supplied, and being able to apply the oil more uniformly than conventional oiling rollers. have

Various shapes of this refueling guide have been proposed. Among these, as described in Japanese Utility Model Application Publication No. 58-75773, etc., a lubricating guide (9th to 1st
0) has been preferably used because it has advantages such as the discharge of the lubricant from the lubricant discharge hole is not obstructed by the running yarn and the fluctuation in the amount of lubricant is small.

However, when using this oil supply guide, the oil may flow vertically downward from the discharge hole due to the accompanying airflow generated by the thread running, the properties of the surface on which the oil flows down, or slight deviations in the thread running position. Instead, as shown in FIG. 10, a phenomenon in which the lubricant flows down to the right or left, that is, a phenomenon in which the lubricant flows in a biased manner tends to occur. If the lubricant drifts in the thread path on the lubricating guide, it becomes difficult to uniformly apply the lubricant in a quantitative manner, which is a feature of the guide lubricating system, and the lubricant that is not applied will scatter and cause damage to the equipment. or cause atmospheric pollution. If the oil is not uniformly applied to the running yarn, the frictional resistance will fluctuate greatly, and the fibers in the areas where the oil is not applied will be rubbed and abraded in the yarn path, causing uneven fineness of the fibers or single yarns. The breakage causes a decrease in the quality of the yarn, such as increased fluff. Moreover, since the abrasion powder 9 due to this abrasion and abrasion accumulates on the yarn path, the uneven flow of the oil agent is further promoted, and the yarn runs with the abrasion powder sandwiched between them, thereby promoting single yarn breakage and thread breakage. .

As described above, when a drift of the oil agent occurs, the quality of the yarn deteriorates, and the stability of yarn spinning is also greatly reduced.

[Problems to be Solved by the Invention] Therefore, the present invention aims to prevent the uneven flow of the lubricant on the oil supply guide, and to prevent the generation of abrasion powder due to abrasion and abrasion of the yarn on the guide yarn path. In particular, by preventing this uneven flow of the oil agent, the purpose is to uniformize the application of the oil agent, improve the yarn properties, and improve the stability of the process including the application of the oil agent, particularly the stability of yarn spinning.

[Means for Solving the Problems] In order to achieve this object, the present invention provides a running yarn having an upward slope 4 in which an oil discharge hole 2 is formed and a yarn contacting vertical surface 5 below the upward slope. Guide oiling device 1 for row oiling
It is characterized in that an oil guide protrusion 3 is provided on the upward slope, and extends vertically from the oil discharge hole or its vicinity in the downward direction of the oil to the lower end 6 of the upward slope or near the front thereof. That is.

The guide oil supply device according to the present invention will be described below with reference to FIGS. 1 to 5 showing one embodiment of the shaped liquid guiding protrusion, and FIGS. 6 to 8 showing other embodiments.

Figures 1 to 5 show the same embodiment of the guide oil supply device, and each shows an enlarged front view of the main parts, a vertical cross-sectional view taken along the n-■ arrow, a cross-sectional view taken along the ■-■ arrow, and a guide oil supply # device. FIG. 2 is a front view of the whole and a vertical cross-sectional view taken along the line V-■. Also,
6 to 8 respectively illustrate other embodiments of the liquid guiding protrusion, and FIG. 6(a) and FIG. 7(a) to (
C) and FIG. 8(a) are enlarged front views of their main parts;
Figure 6 (b), Figure 7 (d), (e) and Figure 8 (
b) is an enlarged longitudinal sectional view of the main parts thereof.

The guide oil supply device according to the present invention is characterized in that a liquid guide projection 3 is provided, and the liquid guide projection is arranged under an upwardly inclined slope in the direction in which the oil flows from the oil discharge hole or its vicinity. It is necessary that the loop extends vertically to near the front of the loop.

The liquid guiding protrusion 3 can have various arrangements and shapes as illustrated in FIGS. 1 to 8.

For example, Figures 1 to 5, Figures 6 and 7 (a) to (d)
) As shown in FIG. As shown, a rod-shaped liquid guide protrusion extending downward from approximately the center of the oil discharge hole is provided, and the oil flow is guided by the liquid guide protrusion.

Alternatively, as shown in FIG. 7(e), a liquid guiding groove 10 drilled downward from the oil discharge hole may be provided along with the liquid guiding protrusion 3.

In the case of a heel-shaped liquid guiding protrusion, the front shape may be, for example, an inverted bee-like shape as shown in Fig. 2, a bee-like shape as shown in Fig. 6(a), or a frontal shape as shown in Fig. 7 with the lower end of the liquid conducting protrusion bent inward. Shape like (a),
Further, any shape as shown in FIGS. 7(b) and 7(C) in which the lower end portions are connected may be used.

The dimensions and positions of these liquid guide protrusions depend on the diameter of the oil discharge hole, the amount of oil discharged, the slope of the upward slope, the fineness of the yarn, the number of single yarns, and the spread width of the single yarn when the yarn starts to contact the guide. However, in general, it is preferable to do the following.

When weir-like protrusions are provided on the left and right sides of the oil discharge hole, the horizontal distance α1 at the center of the oil discharge hole and the horizontal distance a2 at the lower end thereof are α2/D, 1=O to 1.3. More preferably, the range is from 0 to 0.8. I
If the shape is so wide that 22/rL1 exceeds 1.3, the lubricant tends to flow down only one of the protrusions provided on the left and right sides of the lubricant discharge hole.
Since the oil bulge 7 formed at the lower end 6 of the upward slope is offset from the center, the effect of uniformly applying the oil is somewhat insufficient.

The height u4 of the liquid guide protrusion may be such that if it is heel-shaped, it can restrict the flow area of the oil, and if it is rod-shaped, it should be high enough to allow the oil to flow down. It's fine if you have one. However, if it is too high, it may interfere with the thread running, so generally the height is 0.4, so that the lower end is in
It is preferably n or less.

Generally speaking, the distance α between the lower end position of the liquid guiding protrusion and the lower end of the upward slope prevents the oil from drifting when the single fiber spread at the lower end of the liquid guiding protrusion is smaller than the horizontal distance α2 of the liquid guiding protrusions there. In order to ensure sufficient contact of the yarn to the oil agent bulge 7, O≦0.3<1.51I1m is preferred, and 0.3°O is particularly preferred.

In addition, if the spread of the single fiber at the lower end of the liquid guiding protrusion is larger than the horizontal distance α2 of the liquid guiding protrusion there, or if the liquid guiding protrusion extends downward from approximately the center of the oil discharge hole, drifting can be prevented. From this point of view, it is preferable that α3<1.5 mm. In this case, bring the yarn into sufficient contact with the oil bath (Rami 7).
In addition, in order to prevent the running yarn from bending or splitting due to the liquid guiding protrusion, the length of 2-5 inches (θ+ tan-'
)) (7) (i is preferably 0<T<1, particularly 5in(θ+tan-'<14/Q3)
)'Otealco is preferred. Note that θ in the above formula
is the angle formed by the upward slope 4 and the yarn contacting vertical surface 5.

This liquid guide protrusion is placed on the upward slope of the conventional oil supply guide.
It can be provided by fixing an ultra-fine wire material in the shape of a liquid guiding protrusion by means such as adhesion or fusion. Furthermore, liquid guide protrusions may be provided in the oil supply guide shape itself when manufactured by molding.

[Function] When the liquid guide projection 3 is provided in this way, the oil discharged from the oil discharge hole 2 flows down between the heel-shaped liquid guide projections or is guided by the liquid guide projection. It flows down, exits near the lower end 6 of the upward slope, and then flows down along the thread contacting vertical surface 5. In this way, when the route of the oil flow down the upward slope is regulated by the liquid guiding protrusion 3, the flow of the oil can reliably flow to a fixed position regardless of the properties of the upward slope. Can be done. In this way, by always maintaining the lubricant flow path in a fixed position at the position where the yarn first contacts the oil supply guide surface (near the upper end of the yarn contacting vertical surface), uneven flow caused by disturbance in the flow path can be prevented. The phenomenon can be prevented.

In addition, when the oil flows down the liquid guide protrusion 3 and flows out from the lowest end onto the upward slope, there is a slight horizontal protrusion near the outlet end, that is, near the lower end 6 of the upward slope, as shown in FIG. A droplet-like oil bulge 7 is once formed, and then the oil flows down along the yarn contacting vertical surface 5. On the other hand, since the yarn Y runs from the top to the bottom, when the yarn passes near the lower end 6 of the upward slope, it first comes into contact with the oil bulge 7, and then the yarn contact vertical surface 5 will come into contact with. In this way, if even a small amount of oil is applied to the yarn before contacting the yarn contact vertical surface 5, the yarn Y
is always in contact with the yarn contacting vertical surface 5 through an oil agent, and therefore, the yarn is not rubbed or worn due to the yarn and the oil supply guide surface running in direct contact with each other without using an oil agent. It is possible to prevent problems such as single thread breakage. Moreover, since the yarn Y always travels while being in contact with the oil supply guide surface through the oil agent, the phenomenon in which the flow of the oil agent in the yarn path is biased only to the right side or only to the left side due to the traveling yarn is suppressed. It is thought that these effects work together to prevent problems such as drifting of the oil, thread abrasion, abrasion phenomena, and single yarn breakage.

If the guide lubricating device according to the present invention is used as a spinning lubricating device for lubricating spun multifilaments while converging them, each single yarn can be completely bundled when traveling in contact with the oil aI bulge 7. Therefore, each single yarn is separated and runs in contact with the lubricant bulge, and the lubricant is applied uniformly to each single yarn. Therefore, the oil supply guide according to the present invention is particularly effective as a oil supply device for a spinning process, but can also be effectively applied as a oil supply device for already bundled yarns or for monofilament yarns.

When layered liquid guiding protrusions are provided on the left and right sides, the weir-like protrusions have the effect of uniformly lubricating each single yarn and making it easier to gather the yarn into rough bundles, which makes it easier to gather the spun yarn that runs at high speed. It is particularly suitable as a refueling guide when refueling while refueling.

As described above, the guide lubricating device according to the present invention is suitable for lubricating synthetic fibers made of polyamide or polyester, especially when the yarn speed during lubricating is high, or when lubricating spun yarn while converging it. , and when the single yarn fineness is thin. For example, there is a high-speed spinning process in which the spun yarn is taken up at high speed and wound without substantial stretching, a direct spinning/drawing process in which the spun yarn is taken up and then stretched and wound, or a spun yarn is taken up at high speed and wound without being stretched. It can be applied to an undrawn yarn spinning process in which the yarn is wound without being substantially oriented.

Note that the guide oil supply device according to the present invention can be generally applied regardless of the shape of the oil discharge hole, so it may be not only a circular discharge hole as shown in the drawings but also an elliptical or polygonal discharge hole.

[Example] - Examples 1 to 5 and Comparative Examples Nylon 6 containing 0.2 wt% titanium oxide was used as the first
16. Using the oil supply guide of the embodiment shown in FIGS. 1 to 5 as the oil supply guide in the process of high-speed silk reeling as shown in FIG.
Six nylon yarns of 5 denier and 5 filaments were spun.

That is, after the nylon 6 yarn melt-spun from the spinneret is cooled and solidified, it is lubricated and focused by a lubricating guide, taken up sequentially by a first godet roller and a second godet roller, and wound into a package at 4000 m/min. Ta.

The oil used for lubricating was a water emulsion type oil with a concentration of 3 wt%, and the amount of oil applied to one yarn was 1.5%.
The speed was set to 0 m/min. The liquid guide protrusion of the oil supply guide used had a shape as shown in FIGS. 1 to 3, and experiments were conducted by changing the dimensions of each part as shown in Table 1.

Further, as a comparative example, yarn spinning was carried out in the same manner as described above using an oil supply guide having the same shape, dimensions, and properties except that the liquid guiding protrusion was not provided.

In each case, yarn spinning was continued for 14 days using two spinning machines, and the uneven flow of the oil and the accumulation of abrasion powder during that time were investigated.
Observations were made using a long-focus microscope, and the frequency of occurrence was compared based on the ratio of the number of drifting guides or the number of guides with abrasion powder accumulation to the total number of oil supply guides attached to the spinning machine.

In addition, the oil content, moisture content, and Worcester's spots of the obtained threads were periodically measured, and the oil content and moisture content were compared using their standard deviations, and the Worcester's spots were compared using their average values. Roughly speaking, the frequency of thread breakage during the spinning period was compared based on the number of thread breakages per day per 10 karat gold, and the results are shown in Table 2.

From the results in Table 2, it can be seen that by providing the layered liquid guiding protrusions, the uneven flow of the oil agent and the generation of abrasion powder were sufficiently suppressed. The effect varies depending on the dimensions of the liquid guide protrusion, and is most effective when the ratio (02/D, 1) of the horizontal distance a2 at the lower end to the horizontal distance u1 at the center of the oil discharge hole is 1.3 or less. In particular, when it was set to 0.8 or less, the uneven flow of the oil agent and the generation of abrasion powder were almost completely suppressed.

In addition, when a lubrication guide with liquid guiding protrusions is used, the variation in the oil content and moisture content of the yarn is reduced, and uniform lubrication is carried out over a long period of time. Scratching and fluctuations in frictional resistance were reduced, and the value of Worcester's spots was also reduced.

Together, these results significantly reduced the number of yarn breakages and contributed to a significant improvement in yarn spinning stability.

- Example 6 As shown in FIG. 8, the shape of the liquid guide projection 3 provided on the oil supply guide was a projection shape extending downward from approximately the center of the oil discharge hole, with a diameter of ff3 = 0.75 mm.

Silk spinning was carried out in the same manner as in Example 1, except that the oil supply guide was changed to α4=0.2 mm.

As a result, the occurrence rate of oil agent drift: 19%, and the occurrence rate of abrasion powder: 13%, indicating a considerable effect.

In this way, even a single rod-shaped liquid guiding protrusion extending downward from the discharge hole was quite effective.

[Effects of the Invention] By using the oiling guide device according to the present invention, it is possible to prevent uneven flow of the oil flowing down on the oiling guide, as well as abrasion and abrasion of the running yarn, and prevent friction on the oiling guide. It is possible to prevent the generation of powder, fiber abrasion, and single yarn breakage.

It is also effective for uniformly applying the lubricant, making the frictional resistance of the yarn uniform, and reducing the frequency of yarn breakage.

As described above, the oil supply guide according to the present invention is extremely effective for improving the quality of the obtained yarn and improving the stability of the process including applying the oil agent.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the guide oil supply device according to the present invention, and show an enlarged front view of the main part, a vertical cross-sectional view taken along the line ■-■, and a cross-sectional view taken along the line ■-■, respectively. FIG. 2 is a front view of the entire guide oil supply device, and a vertical cross-sectional view taken along the line v-■. Moreover, FIGS. 6 to 8 respectively illustrate other embodiments of the liquid guiding protrusion, and FIGS. 6(a) and 7
Figures (a) to (C) and Figure 8 (a) are enlarged front views of their main parts; Figures 6 (b), 7 (d), (e) and 8 (b) are , is an enlarged vertical cross-sectional view of the main parts thereof. 9 and 10 are a longitudinal sectional view and an enlarged front view of the main parts of a conventional oil supply guide. FIG. 11 is a schematic diagram showing an example of a process to which the refueling guide according to the present invention is applied. [Explanation of symbols] 1: Guide oil supply device (oil supply guide) 2: Oil discharge hole 3: Liquid guide projection 4: Upward slope 5: Yarn contact vertical surface 6: Lower end of upward slope 7: Droplet-shaped oil bulge 8 : Flowing range of oil agent 9: Abrasion powder α accumulated on the thread path : Horizontal distance α2 between the left and right liquid guide protrusions at the center of the oil agent discharge hole α2 : Horizontal distance between the left and right liquid guide protrusions at the lower end of the liquid guide protrusions , : Distance from the lower end of the liquid guide protrusion to the lower end of the upward slope Q : Height at the bottom of the liquid guide protrusion Y : Fiber thread

Claims (4)

[Claims] (1) A guide lubricating device for lubricating a running yarn, which has an upward slope in which an oil discharge hole is formed and a yarn contacting vertical surface below the upward slope, in which the oil flows from the oil discharge hole or the vicinity thereof. A guide lubricating device for a running yarn, characterized in that a lubricant liquid guide projection extending vertically to a lower end of the upward slope or near the front thereof is provided on the upward slope. (2) The guide lubricating device for running yarn according to claim 1, wherein the liquid guide protrusion is a weir-like protrusion extending downward from the left and right sides of the oil discharge hole, respectively. . (3) The horizontal distance l_1 between the left and right weir-like projections at the center of the oil discharge hole and the horizontal distance l_2 at the lower end of the weir-like projections are l_2/l_1=0 to 1.3. A guide lubricating device for running yarn according to claim 2, characterized in that: (4) The guide lubricating device for running yarn according to claim 1, wherein the liquid guiding protrusion is a rod-shaped protrusion extending downward from approximately the center of the lubricant discharge hole.