JPH11286824A - Guiding device for spinning oil applicator and oil application - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device for spinning oil application capable of uniform oiling and stable travelling of fiber yarn even in speeding up by providing an oiling guide with a fiber yarn contacting part bending along the running direction of the fiber yarn and having linear parts before and behind of the bend. SOLUTION: This spinning oil applicator has an oiling guide a fiber ∥yarn contacting part 4a and 4b of which mainly comprises Al2 O3 including 10 to 40 wt.% of ZrO2 , average crystalline particle size of ZnO2 being 1.5 to 5 μm and the average crystal line particle size of the Al2 O3 being 1.5 to 30 μm, is bent at least a part to the travelling direction of the fiber yarn and has linear parts before and behind of the bend. An oil nozzle 2 is placed on the upper slope of the fiber yarn contacting part 4a, 4b to the running direction of the fiber yarn, and has a thread guide satisfying the expresion I and II, where θmax( deg.) is the maximum bend angle formed by the fiber yarn contacting part 4a, 4b of the oiling guide 1 and θL( deg.) is the agnle formed by the final fiber yarn contacting part of the oiling guide 1 and the fiber yarn running at the lower part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber oil applying guide device for applying a liquid such as an oil in a melt spinning process of synthetic fibers. More specifically, the present invention relates to a fiber oil agent application guide device that is effective for uniformly applying a liquid to a high-speed running yarn and stably running the yarn.

[0002]

2. Description of the Related Art In a melt spinning process of synthetic fibers such as polyamide and polyester, an oil agent containing a lubricant or a charging agent is applied to a running yarn. Devices (hereinafter referred to as refueling guides) are widely used. This refueling guide
Basically, it has an oil agent discharge hole for constantly discharging a measured oil agent, and applies the oil agent discharged from the oil agent discharge hole to a running yarn contact surface on a running yarn contact surface. . Since the oil supply guide can supply the oil agent at a constant amount, it has an advantage that the oil agent can be easily applied evenly to the yarn as compared with a roller type oil agent application device (oiling roller).

[0003] However, especially when the yarn runs at a high speed, a large amount of accompanying airflow is introduced together with the yarn into the lubrication guide, so that the oil agent from the discharge hole to the yarn joining portion is deflected to the yarn joining portion. Supply unevenness occurs, and the guide portion to the yarn joining portion takes in the accompanying airflow, so that the single yarn of the yarn sways, or the oil agent drifts at the yarn joining portion. There is a problem of sticking spots. In order to solve these problems, various shapes of lubrication guides for yarns have been proposed.

For example, Japanese Unexamined Patent Publication No. 9-273024 proposes an oil supply guide in which a projection is provided above an oil agent discharge hole in order to shut off an accompanying airflow. However,
Even when using this lubrication guide, the guiding slope of the yarn is in front of the yarn joining part, and not only the accompanying airflow is introduced, but also the accompanying airflow carried along with the yarn in the recess at the upper part of the discharge hole is deflected, and the uniformity of the oil agent is improved. The flow will be disturbed in reverse. Moreover, the yarn joining portion to which the oil agent adheres only discloses a general shape, and the oil agent that has drifted at the upper portion of the discharge will adhere to the yarn in an uneven state, which is a characteristic of guide oiling. Not only is it difficult to apply a uniform oil agent quantitatively, but also the amount of the oil agent attached to the yarn is reduced, and the unapplied oil agent causes significant contamination of the device and the atmosphere. In addition, uneven spots in the yarn cause fluctuations in the tension of the running yarn, leading to yarn breakage and deterioration in quality, resulting in serious trouble.

[0005] Further, in order to eliminate uneven spots of the oil agent at the yarn joining portion, it is necessary to provide a horizontally long recess for receiving the oil agent in the middle of the thread contact surface of the oil supply guide. Although proposed in Japanese Patent Application Laid-Open No. 54-34021, etc., drifting due to an accompanying airflow cannot be sufficiently suppressed only by a depression. Moreover, in Japanese Utility Model Laid-Open No. 54-34021,
Since the discharge hole is provided in the yarn groove, and the yarn comes into contact with the lubrication guide before the oil agent adheres, the yarn is significantly damaged at high speed, and there are problems such as a decrease in the toughness of the yarn, fluff, breakage of the yarn, and the like. .

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the prior art, to suppress uneven flow of an oil agent on an oil supply guide due to accompanying airflow, to provide a uniform oil agent even at a high speed, and to provide a yarn. It is an object of the present invention to provide a fiber oil agent application guide device capable of stabilizing the running of the fiber and improving the yarn characteristics and the stability of the process.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lubrication guide in which at least one or more bending portions are bent with respect to the running direction of the yarn at the yarn connecting portion, and the yarn connecting portions before and after the bending are linear portions. This can be achieved by a fiber oil agent application guide device characterized by having the above.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fuel supply guide according to the present invention. FIG. 1 is a front view showing an example of a lubrication guide according to the present invention, FIGS. 2 to 7 are longitudinal sectional views showing an example of a lubrication guide according to the present invention, and FIG. 8 is a lubrication guide proposed in Japanese Patent Application Laid-Open No. 9-273024. FIG. 9 is a longitudinal sectional view showing another example of a conventional refueling guide.

In the figure, 1 is a guide body, 2 is an oil discharge hole, 3 is a slope having an oil discharge hole, 4a, 4b, and 4c are threaded portions, θ1 and θ2 are bending angles formed by the threaded portions, and θL is The angle formed by the final yarn portion and the lower yarn, 5a, 5b, 5
c is a threading portion depression, and 6 is a yarn path guide.

[0010] The lubrication guide according to the present invention is characterized by the shape of the yarn-attaching portion, wherein the yarn-attaching portion is bent at at least one or more places, and the yarn-joining portions before and after the bending have straight portions. You need to be there. The bending of the yarn-attached portion is represented by A in FIG.
The running direction of the contacting yarn changes as shown in 2
It is a portion formed by having two connecting portions 4a and 4b, and there may be any number of bent portions A as long as it is one or more. Further, each of the yarn joining portions has a straight portion.
The shape of the bent portion between the yarn joining portions is not particularly limited, but a surface having a curvature is more preferable in order to reduce damage to the yarn. Further, a recess for receiving the oil agent may be provided at any place of the threading portion as shown in FIGS.

The bend angle is preferably 3 ° or more so as not to be affected by the accompanying airflow, and less than 15 ° is sufficient. Preferably it is 10 ° or less. If it is 15 mm or more, the damage to the yarn is large, and there is a problem such as fluff.

The oil discharge hole 2 is desirably provided on the inclined surface 3 above the threading portion so as not to touch the oil supply guide body before the yarn touches the discharged oil. It is desirable that the angle between the slant surface 3 of the oil agent discharge hole and the yarn joining portion 4a relative to the running direction of the yarn is as small as possible.

The material of the threaded portions 4a, 4b, 4c is preferably a material having low friction and high wear resistance for running on a bent threaded portion, particularly ceramic, ceramic coating, composite ceramic material, etc. It is effective to use a material containing Al ₂ O ₃ as a main component and containing ZrO ₂ at 10 to 40% by weight. Particularly, the average crystal particle diameter of ZrO ₂ is 1.5 to 5 μm, and the average crystal particle diameter of Al ₂ O ₃ is 1.5 to 5 μm.
Composite ceramics formed of 30 μm crystal grains are preferred. In addition, the average crystal grain size referred to here means that the guide sintered body is surface-ground with a diamond grindstone, the ground surface is mirror-polished using diamond polishing abrasives, and then etched. , A line was drawn at random, and the maximum length of a crystal grain parallel to the line of the grain on which the line was drawn was determined, and a simple average was determined.

FIG. 10 shows a fiber oil supply guide device provided with an oil supply guide 1 and a yarn path guide 6 for defining the yarn traveling direction. The bending angle θ between the lubrication guide final yarn joining portion 3b and the yarn running direction is determined by the yarn path guide.
It is even more effective if the relationship between L and the maximum bending angle θmax of the lubrication guide threading portion is in the range as shown in Expression (2).

(2) 0 <θL <15−0.8θmaxθL
By setting the angle to be more than 0 °, the yarns at the final yarn-attached portion can be brought into sufficient contact with each other to run, and the adhesion of the oil agent becomes uniform. In addition, by making it less than 15-0.8θmax,
This prevents the physical properties of the yarn from deteriorating due to rubbing at the yarn joining portion and the guide, and has a running stability of the yarn.

[0016]

When the oil supply is applied to the running yarn Y using the oil supply guide 1 of the present invention, the oil discharged from the discharge hole 2 is threaded along the inclined surface 3 provided at the upper part of the threaded portion. And flows along the bent connecting portions (4a and 4b in FIG. 2). Then, the yarn Y running on the yarn joining portion at the same time
The oil agent is imparted to the yarn by contact with the yarn on the yarn joining portion. Further, the traveling yarn Y travels along the yarn path guide guide 6 provided below the refueling guide as shown in FIG. 10, thereby arbitrarily setting the bending angle θL of the refueling guide and traveling the yarn stably. Can be.

By providing the bent portion A in the yarn joining portion, uneven flow of the oil agent in the yarn attaching portions 4a and 4b due to the accompanying airflow and yarn sway at the yarn joining portion can be suppressed, and the oil agent can be uniformly attached. In other words, the inclined surface 3 from the discharge hole 2 to the threading portion or the threading portion 4a in the same direction as the running of the yarn is easily affected by the accompanying airflow flowing along with the yarn, and uniform lubrication is difficult only with the threading portion 4a alone. However, the presence of the bent portion allows the associated airflow to flow along the yarn-attached portion surface 4a above the bent portion, so that the airflow can be efficiently cut without disturbing the associated airflow, and the yarn attached to the lower side of the bent portion can be cut. The portion 4b can prevent the influence of the accompanying airflow. In addition, the bent portion and the threading portion 4b under the bent portion
The effect of restricting the yarn is imparted, thereby improving the adhesiveness of the oil agent at the threaded portion 4b below the bent portion, and at the same time, reducing the sway of the yarn at the upper portion 4a of the bent portion. Spots can be prevented.

The shape of the yarn-joining portion in the yarn running direction is not particularly limited. However, in order to effectively cut the accompanying airflow as described above, the yarn-running portion of the yarn-joining portion before and after the bent portion has the yarn running. It is straight.

The discharge hole 2 is provided on the inclined surface 3 above the yarn joining portion to prevent the yarn from directly touching the yarn before the oil agent adheres, so that the yarn is not damaged due to the abrasion of the yarn, especially at a high speed running. The problem of fluff can be prevented. The shape, position, and the like of the discharge hole 2 are not particularly limited, but in order to make the discharge hole 2 less susceptible to the accompanying airflow, the discharge hole is close to the yarn joining portion,
Further, it is more preferable that the angle between the accompanying airflow direction brought by the yarn and the slope is small.

The surface roughness and material of the yarn-joining portion are not particularly limited. For example, the average crystal particle diameter of ZrO ₂ is 1.5 to 5 μm, and the average crystal particle diameter of Al ₂ O ₃ is 1.5 to 5 μm.
It is more effective to use a composite ceramic formed of crystal grains of 30 μm. Although the reason has not been clearly confirmed, it is considered to be due to the following effects. In other words, since two different materials are firmly bonded to the yarn-joining part, the yarn is prevented from dropping, especially when the yarn runs at the bent part, so that the yarn is not damaged and the yarn-wetting part is wet. It does not impair the properties. In addition, the unevenness formed by each particle improves the wetting characteristics specified by the contact angle with the oil agent to be applied, thereby creating a uniform flow of the oil film before and after the bent portion, and friction at the bent portion. Can be reduced.

Although the yarn guide 6 is not particularly limited, it can be provided at the above-mentioned predetermined angle so as not to apply excessive tension to the threaded portion of the oil supply guide and to control the yarn under the bent portion. A regulatory effect can be provided. In particular, when the threading portion of the refueling guide has a flat surface, it is possible to uniformly spread the yarn regardless of the shape of the yarn path guide, which is effective.

By using the oil agent applying device for fibers according to the present invention, the oil agent can be evenly applied to the yarn. In particular, when the oil agent is applied at a high speed with a large accompanying air flow rate, the air flow cutting effect of the oil supply guide of the present invention is remarkably exhibited, and not only the uniformity of the oil agent but also the adhesion efficiency can be improved. The effect is great when applied in a process in which the running yarn speed is 4000 m / min or more.

[0023]

EXAMPLES Examples 1 to 4 and Comparative Examples 1 to 4 Polyester containing 0.3% by weight of titanium oxide was used in the eleventh example.
As a lubrication guide in the high-speed spinning process as shown in the figure, a composite ceramic guide having a lubrication shape shown in FIG. 2 and having a θ1 of 5 ° and a material of the weaving part containing 15% by weight of ZrO ₂ was used. A polyester yarn having a round cross section of the filament was produced.

That is, after the polyester yarn melt-spun from the spinneret is cooled and solidified, it is introduced into a heating cylinder, stretched, an oil agent is applied by an oil supply guide and converged.
The godet roller and the second godet roller were sequentially taken up and wound while changing the take-up speed.

An oil solution having a concentration of 15% was used for refueling. The amount of oil applied to the yarn was 1.5%.

As a comparison, a yarn was formed in the same manner as described above using an oil supply guide shown in FIG.

The yarn running speed of the yarn joining portion was obtained by actually measuring the yarn speed before and after the lubrication guide using a yarn speed meter (model LS50M) manufactured by TSI, and the average value was obtained.

The number of oil drops falling under the refueling guide per 5 minutes was measured as the amount of oil agent not adhering to the yarn, as to the state of adhesion on the refueling guide.

The oil agent adhesion fluctuation rate ΔR is obtained by measuring the fluctuation of the oil and water content of the running yarn under the lubrication guide continuously for 5 minutes using a resistance meter and calculating the obtained output voltage value (R) by the following formula. Was calculated and compared.

ΔR (%) = (Rmax−Rmin) / (Rm
ax + Rmin / 2) The results are shown in Table 1.

[0031]

[Table 1] It can be seen that the provision of the bent portion prevents oil drops from dropping, improves the adhesion, and reduces the fluctuation range. In particular, the effect is particularly observed in the case of adhesion at a high speed where the influence of the accompanying air flow rate is large.

Examples 5 to 14 The bending angle .theta.max formed by the yarn-attaching surface using the lubrication guide shown in FIG. And take-up speed of 5000m / min
Except for the above, the same spinning as in Example 1 was performed to obtain a triangular cross-section yarn of 50 denier and 36 filaments. The number of drops of the oil droplets and the variation ΔR of the oil agent adhesion and the fluff of the obtained yarn were measured and compared. The results are shown in Table 2.

[0033]

[Table 2] By setting an appropriate angle, the flow of the oil agent before and after the bent portion can be made uniform, the stabilization of the running yarn can be maintained, and the adhesion and the quality of the yarn can be stabilized.

[0034]

According to the oil supply guide device of the present invention, the accompanying airflow can be efficiently cut and the oil agent can be uniformly attached, so that the quality and the process stability can be improved. In particular, the adhesiveness can be improved even in high-speed yarn production in which a large amount of accompanying airflows are generated, and it is extremely effective in suppressing an oil droplet from falling and scattering of an oil agent in an oil supply guide portion, and is extremely effective in improving the environment.

Further, since the airflow cutting effect can be obtained only by the refueling guide of the present invention, no additional device such as an accompanying airflow cutting device is required above the refueling guide, and the refueling guide device can be made compact and the cost can be reduced. .

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a refueling guide of the present invention.

FIG. 2 is a longitudinal sectional view showing one specific example of a refueling guide of the present invention.

FIG. 3 is a longitudinal sectional view showing another specific example of the refueling guide of the present invention.

FIG. 4 is a longitudinal sectional view showing another specific example of the refueling guide of the present invention.

FIG. 5 is a longitudinal sectional view showing another specific example of the refueling guide of the present invention.

FIG. 6 is a longitudinal sectional view showing another specific example of the refueling guide of the present invention.

FIG. 7 is a longitudinal sectional view showing another specific example of the refueling guide of the present invention.

FIG. 8 is a longitudinal sectional view of a lubrication guide (conventional example) proposed in Japanese Patent Application Laid-Open No. 9-273024.

FIG. 9 is a longitudinal sectional view showing another example of a refueling guide (conventional example).

FIG. 10 is a longitudinal sectional view showing a refueling guide and a yarn path guide according to the present invention.

FIG. 11 is a schematic view showing an example of a process in which the refueling guide according to the present invention is applied.

[Explanation of symbols]

1: oil supply guide 2: oil agent introduction hole 3: upward slope of oil agent introduction hole 4a, 4b, 4c: threading portion 5a, 5b, 5c: depression 6: yarn path guide guide 7: base 8: heating cylinder 9: first gore Dead roller 10: Second godet roller 11: Winding machine θ1: Bending angle formed by contact surfaces 4a, 4b θ2: Bending angle formed by contact surfaces 4b, 4c θL: Final yarn joining surface and lubrication guide Angle formed by outgoing yarn A: Bending portion of lubrication guide connecting portion Y: Yarn

Claims (5)

[Claims] In a fibrous oil application guide device for applying an oil agent to a yarn by causing a fiber yarn to contact and run, the oil supply guide is bent at least at one or more positions in the yarn running direction with respect to the yarn running direction. An oil agent applying guide device for a fiber, wherein the yarn joining portions before and after bending have a straight portion. 2. A fiber oil application guide device according to claim 1, wherein an oil agent discharge hole is provided on an inclined surface above the yarn joining portion with respect to the yarn running direction. 3. The method according to claim 1, wherein at least the yarn-attached portion has a ZrO ₂ content of 10 to 40.
Was mainly composed of Al ₂ O ₃ containing by weight%, average crystal grain size of the ZrO ₂ is 1.5～5Myuemu average crystal grain size of Al ₂ O ₃ is 1.
3. The fiber oil applying guide device according to claim 1, wherein the guide device is made of a composite ceramic having a thickness of 5 to 30 [mu] m. 4. The maximum bending angle θmax (max) formed by the threaded portion of the refueling guide according to any one of claims 1 to 3, and the final threaded portion of the refueling guide and the lower running thread are formed. An oil agent application guide device for a fiber, comprising a yarn path guide that makes an angle θL (゜) satisfy the following expression. (1) 3 ≦ θmax <15 (2) 0 <θL <15−0.8θmax 5. The yarn traveling speed of the yarn joining section is at least 400.
An oil agent application method, wherein the oil agent application guide device is at least 0 m / min, and the fiber oil agent application guide device according to any one of claims 1 to 4 is used.