JP3227835B2 - Refueling guide and metering refueling device using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a lubrication guide for applying a running yarn oil agent which is suitably used in a lubrication process of a synthetic fiber in a melt spinning step, and to an improvement in a metering lubrication device. More specifically, the present invention relates to a lubrication guide and a metering lubrication device which can significantly suppress the ejection failure of an oil agent and are effective in preventing thread breakage and abnormal quality.

[0002]

2. Description of the Related Art In the process of melt-spinning a synthetic fiber such as polyamide or polyester, an oil agent containing a lubricant or an antistatic agent is applied to a running yarn. As a device for this, a metering refueling device using a refueling guide has been widely used.

[0003] This metering and lubricating device basically discharges an oil agent metered by an oil agent measuring pump and fed to an oil supply guide from an oil agent discharge hole thereof, so that the oil agent is applied to the synthetic fiber yarn that runs in contact. Is a device for providing The refueling guide is a fixed type guide, and the oil agent measured by the metering pump flows into the oiling guide from the pipe connection part through the supply pipe and is discharged from the oil agent discharge hole, thereby contacting the oiling guide. An oil agent is applied to the running yarn. The lubricating device using this guide has such advantages that the lubricating amount can be easily changed by changing the lubricating agent supply amount, and that the lubricating oil adhering amount in the yarn longitudinal direction is uniform as compared with the roller lubricating method.

Various shapes have been proposed for the refueling guide. For example, Japanese Utility Model Publication No. 55-41825
JP-A-5-77366 and JP-A-57-77366, a lubrication guide having a pipe connecting portion having a horizontal oil passage and a horizontal oil discharge hole, or Japanese Patent Publication No. 53-77366.
As described in Japanese Patent No. 31983 and Japanese Utility Model Application Laid-Open No. 58-75773, an oil supply guide or the like having a pipe connection portion having a horizontal oil agent passage and an oil agent discharge hole inclined upward is known.

However, in the case of these conventional oil supply guides, air bubbles and foreign matter having a low specific gravity (= substance having a specific gravity separated from the oil agent composition and having a lighter weight than the oil agent) are generated or mixed or remain in the feed pipe. In this case, the bubbles and the light specific gravity foreign matter cause a large pulsation change in the amount of the oil discharge, and furthermore, an unstable oil discharge (discharge failure) such as running out of the oil without any discharge of the oil.

[0006] If the oil ejection failure occurs, the running yarn is very easily cut due to the guide rubbing resistance, and the productivity in the spinning process is reduced. For example, when changing the type of oil used or cleaning the oil circuit, it is common to temporarily remove all oil from the oil circuit from the oil tank to the oil supply guide, and then feed a new oil. However, in such a case, air bubbles are likely to remain in the flow path from the metering pump to the oil supply hole of the oil supply guide, and the variation of the adhesion of the oil at the start of the yarn production becomes large, and the yarn breakage frequently occurs. Problems are easy to occur.

[0007] Furthermore, if the adhesion failure of the oil agent occurs,
It also has a significant adverse effect on high-order workability and significantly lowers product quality.

[0008] Therefore, this oil discharge failure is the biggest problem of the guide oil supply system, and therefore, various studies have been made to reduce the mixing and remaining of bubbles in the oil circuit.

For example, it has been studied to remove air bubbles and the like from the oil in the middle of a pipe for feeding into the oil supply guide, and a bypass pipe is connected in the middle of the oil supply pipe from the oil pump to the oil guide. Japanese Patent Application Laid-Open No. 61-275412 proposes a method in which a three-way branch portion is provided, and bubbles and light specific gravity foreign matters in an oil agent are guided toward a bypass pipe for removal.

[0010]

However, although this method can remove air bubbles and foreign matters of low specific gravity to some extent, its effect has not been sufficient. In particular, depending on the composition of the oil agent and the amount of the oil agent supplied, bubbles and foreign substances may hardly move to the bypass pipe, and in this method,
Bubbles or foreign matter generated or remaining in the middle of the pipe after the three-way branching portion cannot be removed at all.

Accordingly, the present invention is to prevent oil discharge failure by improving a lubrication guide, and to prevent various troubles caused by the oil discharge failure, for example, by receiving rubbing resistance by a guide or the like with which a thread comes into contact. Stabilization of the yarn-making process, including the application of oils, by preventing tension fluctuations, yarn breakage, and further lowering of yarn quality due to the generation of fluff and weak yarn, etc., and furthermore, yarn quality and higher processing stability And to improve the quality of higher-order products.

[0012]

To achieve this object, a lubrication guide according to claim 1 of the present invention is provided with a thread contact groove (2) extending in the vertical direction, and is provided continuously above the thread contact groove. A guide main body (1) having an inclined upward surface (3) and an oil discharge hole (4) opened in the upward inclined surface or the thread contact groove, and connecting the guide main body to an oil supply pipe (8). An oil supply guide (10) comprising a pipe connection part (5), and an oil supply guide connected from the oil supply pipe connection end (8 ') connected to the pipe connection part to the oil discharge outlet (4'). It is characterized in that all of the oil agent flow paths have an upward inclination of 5 to 45 degrees with respect to the horizontal.

Further, in order to facilitate the adjustment of the yarn path of the oil supply guide according to the first aspect, the oil supply guide according to the second aspect of the present invention is arranged such that the pipe connecting portion is substantially aligned with the vertical direction of the thread contact groove. It has a cylindrical shape with a vertical line as an axis.

According to a third aspect of the present invention, there is provided a metering lubricating apparatus, wherein the lubricating guide (10), the oil metering pump (11) disposed below the oiling guide, and the oil metering pump. A fuel supply pipe (8) connecting the oil supply section (12) of the oil supply guide and a pipe connection part of the oil supply guide, wherein the oil supply pipe is 5
It is characterized by an upward inclination of more than degrees.

A refueling guide according to the present invention will be described below with reference to FIGS.

FIG. 1 is a longitudinal sectional view (II 'sectional view in FIG. 2) of the lubrication guide, and FIG.
Is a front view thereof.

As shown in FIG. 1,
Oil from the metering pump is supplied through the oil feed pipe 8. The outlet end (connection end) of the oil supply pipe 8 is fitted and fixed to the end of the oil passage in the pipe connection portion 5. In the present invention, all the oil passages from the oil supply pipe connection end 8 ′ connected to the pipe connection 5 to the outlet 4 ′ of the oil discharge hole 4 are directed upward by 5 to 45 degrees with respect to the horizontal. It is important to have a slope.

In the illustrated embodiment, the inclination angle of the flow path in the first half 6 and the inclination angle of the flow path in the second half 7 of the oil passage in the pipe connection portion 5 are made different. Further, an oil agent supply pipe connection end 8 ′ connected to the pipe connection portion 5 is:
It is fitted and fixed to the first half portion 6 of the oil agent flow path in the pipe connection portion 5 at an upward angle as it is, and the upward inclination angles have the same value.

The upward inclination angle θ3 (= the upward inclination angle of the oil supply pipe connecting end 8 'connected thereto) in the first half portion 6 of the oil passage is determined by the center line L of the flow passage portion.
3 is represented by the angle made with respect to the horizontal line H. In addition, the angle θ of the upward inclination in the second half 7 of the oil agent flow path
2 is represented by the angle formed by the center line L2 of the flow path portion with respect to the horizontal line H. Further, the oil agent discharge hole 2
Is expressed as an angle formed by the center line L1 of the oil discharge hole 2 with respect to the horizontal line H.

In this refueling guide, the angles of the upward inclination are all 5 to 45 degrees when θ1 = 5 to 45 degrees and θ2 = 5 to 45 degrees.
45 degrees and θ3 = 5 to 45 degrees.

When the angles θ1, θ2, and θ3 of the upward inclination are all 5 degrees or more, the adhesion and stagnation of air bubbles and light-weight foreign matter on the inner wall surface in the flow path in the refueling guide are prevented. Passability is significantly improved. As a result, it is possible to prevent troubles such as poor oil ejection and running out of oil.

The angles θ1, θ2 and θ3 are further increased by 10
The degree is preferably not less than that in order to further improve the discharge property of the light specific gravity foreign matter. Further, in order to prevent air bubbles and foreign matter from adhering to the inner wall surface near the joint of each flow path, and to further improve the discharge property of the light specific gravity foreign matter, in particular, θ1>θ2> θ3, and It is preferable that the upward inclination is large.

In the illustrated embodiment, each of the front half portion 6, the rear half portion 7 and the oil discharge hole 2 of the oil flow passage is a linear flow passage, and θ1>θ2> θ3.
The condition is not limited as long as the condition of the present invention of 45 degrees is satisfied. For example, θ1 = θ2 = θ3. Also,
The flow paths may be curved such that the upward angle of the flow paths changes gradually, but in this case, the upward inclination is 5 to 45 degrees over all parts, and the flow path It is preferable that the upward inclination increases as going forward.

It is practically necessary to set the upward inclination angle to 45 degrees or less in order to prevent the oil supply guide from being attached to the oil supply guide and avoiding the contact between the thread running position and the oil supply pipe.

The outlet 4 'of the oil agent discharge hole 4 may be opened in the yarn contact groove 2 where the yarn Y comes in contact with and runs, but the influence of bubbles and light specific gravity foreign matter discharged from the outlet 4'. It is preferable to open the outlet 4 'on the upward slope 3 as shown in FIG. The hole shape of the discharge hole outlet 4 'of the refueling guide may be circular as shown in FIG. 2, or is not limited to this as long as it can stably discharge the oil agent. , An ellipse, a rectangle, or the like.

The refueling guide may be made of a usual material. For example, it is preferable that the portion including the yarn contact groove where the yarn travels in contact is formed of ceramics such as alumina ceramic. Further, the pipe connecting portion 5 and the like may be made of metal such as stainless steel or ceramics. In the case of a metal, it is particularly preferable to use a metal having excellent corrosion resistance.

In order to make the vertical direction of the thread contact groove exactly coincide with the running direction of the yarn, the entire lubrication guide must be moved with respect to a line substantially perpendicular to the vertical direction of the yarn contact groove. It is preferable to be able to finely adjust the rotation clockwise or counterclockwise. For this purpose, the shape of the pipe connecting portion 5 is defined by a cylinder having an axis of rotation for adjusting the rotation. Preferably, it is shaped.

Still further, the metering and lubricating apparatus of claim 3 is
The oil supply pipes 8 connecting the oil discharge section 12 of the oil supply pump 11 and the pipe connection section of the oil supply guide are all inclined upward by 5 degrees or more with respect to the horizontal. The oil supply pipe is often inclined upward, but the upward inclination angle is set to 5 degrees or more over the entire portion, that is, any part of the pipe is horizontal or 5 °.
It is necessary not to have a gentle slope of less than degrees.

The material of the oil supply pipe 8 connecting the oil metering pump and the pipe connection of the oil supply guide is not particularly limited, and may be made of nylon resin or the like.

The refueling guide and the metering refueling device according to the present invention are suitable as a refueling device in a process of producing a synthetic fiber made of polyamide, polyester, or the like. In particular, when the oil agent is newly supplied into an empty oil agent circuit, when the amount of the oil agent applied to the yarn is small, when the components of the oil agent are easily separated, when bubbles are easily mixed in the oil agent, when the oil is supplied, It can be suitably used when the strip speed is high, or when the single yarn fineness is small. For example, a high-speed spinning process in which a spun yarn is taken up at a high speed and wound without substantially stretching, a direct spinning / drawing process in which a spun yarn is taken and subsequently stretched and wound at a high speed, or a spun yarn. The present invention can be applied to an undrawn yarn spinning step of winding without substantially orienting the strip.

[0031]

[Action] Residual or mixed air bubbles in the oil supply pipe,
Or, oil ejection failure caused by bubbles or low-specific-gravity foreign matter mixed in oil can cause such bubbles or foreign matter to adhere and stay in the flow path in the oil supply guide or the oil supply pipe, causing it to aggregate or gel. The size gradually increases, and the increased bubbles and foreign matter cause troubles such as a change in the flow rate from the oil agent discharge hole and a disconnection of the oil agent.

The present invention aims to prevent such troubles by improving the refueling guide.
The oil supply passage in the oil supply guide and the oil supply pipe are all inclined upward by 5 to 45 degrees so that bubbles and foreign substances are positively discharged without staying in the oil supply passage. Was found by finding that it was effective.

For this reason, in the lubrication guide of the present invention, the portion where the oil agent flows into the oil supply guide (the connection end 8 'of the oil agent supply pipe) is discharged from the oil agent discharge hole (the outlet 4 of the oil agent discharge hole). ′)
A 45-degree upward slope is used, and bubbles and light-specific-gravity foreign substances smoothly pass through the flow path without adhering and staying there, and are discharged from the outlet 4 'of the oil discharge hole.

Further, in the metering and lubricating apparatus incorporating the lubrication guide, in the present invention, the oil supply pipes after the measuring pump are all inclined upward by 5 degrees or more. As a result, air bubbles and foreign matter having a low specific gravity flow smoothly without adhering and staying.

Accordingly, even if air bubbles or foreign matter having a low specific gravity are mixed in the oil agent, they flow smoothly and are quickly discharged from the discharge hole outlet 4 'of the oil supply guide, and the foreign matter stays and agglomerates inside the oil supply guide. , Gelation and the like can be prevented. As a result, it is possible to significantly suppress defective oil discharge, such as a large pulsation of the discharged oil amount and running out of oil, which are caused by these.

[0036] In addition, since the oil discharge failure can be suppressed, uneven adhesion of the oil in the longitudinal direction of the yarn can be prevented, and operation troubles such as fluctuation of the yarn tension and breakage of the yarn due to the rubbing resistance caused by contact with a guide or the like. Is prevented.
In addition, the lowering of the yarn quality due to the generation of fluff and weak yarn is prevented, and the workability in higher processing processes such as warping and weaving and knitting processes, and the quality of higher processed products obtained are improved. You can.

As described above, the present invention is intended to prevent bubbles and the like in the oil agent from adhering and staying in the flow channel, thereby preventing the problem of bubbles mixed with the oil agent and foreign matters.

On the other hand, conventionally, when air bubbles and the like are mixed in the discharged oil, it is easy to cause the oil to run out at the portion. Therefore, it is considered that it is important to reduce the air bubbles and the like in the discharged oil. Was. Therefore, the conventional countermeasures against bubbles in the oil agent have mainly focused on reducing bubbles in the oil agent, such as removing bubbles in the oil agent or preventing bubbles from being generated in the piping.

However, even in the case of taking measures against these bubbles, conventionally, the inclination angle of the oil supply guide internal flow path and the oil supply pipe is not considered to be a problem at all, and the upward inclination is provided over the entire oil flow path. There was no. For example, in the refueling guides of Japanese Patent Publication No. 53-31983 and Japanese Utility Model Application Laid-Open No. 58-75773, the oil discharge holes are inclined upward, but the pipe connection part and the connected pipe end are horizontal. . Further, in the oil supply pipe disclosed in Japanese Patent Application Laid-Open No. 61-275412, the portion of the oil supply guide connecting portion and the three-way branch portion is horizontal.

Accordingly, in the case of the conventional apparatus, a part of the oil-containing air bubbles and foreign matters that have entered the oil supply guide pass through the oil supply guide and are discharged together with the oil from the oil discharge hole, but the rest is in the oil supply guide. It adhered to the inner wall surface in the middle of the flow path and caused stagnation. This has caused troubles due to the inclusion of air bubbles and the like, that is, pulsation of a large amount of oil discharge and defective oil discharge such as running out of oil.

The trouble caused by the mixing of the air bubbles and the like is that the air bubbles and the like stay and coagulate in the flow path, particularly the flow path in the oil supply guide, and the enlarged air bubbles and the like obstruct the flow of the oil agent. When the enlarged air bubbles are extruded from the discharge hole, the oil agent runs out, and further, the light specific gravity foreign matter separated and generated from the oil agent stays in the flow path similarly to the air bubbles, which becomes larger due to aggregation and gelation. It is mainly caused by obstructing the flow of the oil agent.

[0042]

【Example】

[Example 1] The upward inclination angle θ3 and the upward inclination angle θ2 of the front half portion 6 of the oil passage in the pipe connection portion are shown in Table 1 by the oil supply guide having the device structure shown in FIGS. The metering and lubricating device having the different structure as shown in FIG. 4 was used. The connecting end 8 'of the oil supply pipe
Is fitted in the front half portion 6 of the oil agent flow passage in a linear flow passage shape, and the upward inclination angle of the connection end 8 ′ is the same as the upward inclination angle θ3 of the front half portion 6.

The metering pump was of a gear pump type, and a 3% concentration water emulsion type oil was metered and discharged at 0.7 cc / min. An oil supply guide is installed at a position 1100 mm higher than the metering pump, and the oil supply pipe between them has an inner diameter of 2.5 mm
A translucent nylon tube having a length of 1500 mm and from which the presence or absence of air bubbles can be observed from the outside was used. The inner diameter of the oil passage in the oil supply guide is 2.5 mmφ, and the oil discharge hole diameter is 1.5 mm.
mmφ.

Further, the tip of the injection needle of the microsyringe is inserted into the nylon tube at a position 450 mm higher than the metering pump (position A in FIG. 4), and 25 μl is inserted into the pipe.
Were injected with a bubble diameter of about 0.6 mm or about 2.5 mm, and the discharging property of the bubbles was evaluated.

The size of the injected bubble was adjusted by the pushing speed of the cylinder of the microsyringe, that is, by utilizing the property that the bubble diameter was small when the pushing speed was fast and large when the pushing speed was slow.

The bubble discharge property of whether or not these bubbles are smoothly discharged from the oil discharge hole is determined by visually observing the movement of the bubbles in the translucent nylon tube for 5 minutes after the injection, and by using a lubrication guide. The total evaluation was performed by applying forced vibration so that the oil solution discharge hole of No. 1 was directly above and visually confirming the presence or absence of residual air bubbles.

As shown in Table 1, the results were as follows: ：: extremely good, ：: good, Δ: slightly poor, ×: poor and relative evaluation.

According to the results shown in Table 1, in the case of the present invention in which the oil passages in the refueling guide are all inclined upward by 5 to 45 degrees (Nos. 1 to 3), the air bubbles are easily discharged, and Discharged immediately without stagnation. Both the minute bubbles and the large bubbles having the same diameter as the pipe diameter reached the oil discharge hole immediately without staying in the oil supply guide inlet or inside, and were discharged.

On the other hand, the inclination angles θ2 and θ3 of the oil passage in the connecting pipe portion in the oil supply guide are horizontal (0 degrees) or 5 degrees.
If the angle is less than 5 degrees (Nos. 4 to 7), even if the inclination angle (θ1) of the oil agent discharge hole portion is an upward inclination of 5 degrees or more, the bubble discharge property is extremely poor, and the bubbles There was stagnation.

Example 2 Nylon 6 containing 98% sulfuric acid and having a relative viscosity of 2.6 containing 0.02 wt% of titanium oxide was melt-spun by a conventional method and used for oiling in a high-speed yarn forming step. Each lubrication guide and the metering lubrication device used in Example 1 were used.

That is, the nylon 6 yarn melt-spun from the spinneret is cooled by 20 ° orthogonal cooling air until the yarn temperature reaches 25 ° C., and the yarn is bundled by an oiling guide located 1800 mm below the spinneret. After refueling while
It was sequentially taken out by the first godet roller and the second godet roller, and was wound into a package at 4000 m / min. The wound yarn was 12 denier and 5 filaments.

The oil agent used for refueling is a water emulsion type oil agent having a concentration of 3 wt%. Once the oil agent is extracted from the oil agent circuit from the oil agent tank to the oil agent discharge hole of the oil supply guide, 1.2 cc per thread is measured by the metering pump. The oil was metered at a feed rate of / min. 15 minutes after the oil agent is started to be discharged from the discharge hole of the refueling guide, the yarn is started under the above-described conditions.
The breaking of the spun yarn within 4 hours and the change in adhesion of the oil agent after 24 hours were measured. The yarn was wound at a total of 20 positions by winding 8 yarns per position, and the yarn breakage was evaluated based on the number of cases per position. In addition, oil spots are second
During the period from the godet roller to the winding, measurement was performed with a high resistance meter (manufactured by YOKOGAWA-HEWLLET-PACKAD) using an electrode terminal, and a three-stage evaluation was performed based on the fluctuation state of the adhesion spot. A: good with little variation in spots
B: There is a slight change in adhesion, C: Evaluation was made in three stages, where the change in adhesion was large and there was a problem.

As a result, as shown in Table 1, when the lubricating guide and the oil agent measuring device according to the present invention were used, the yarn thread breakage was stable and small, and the variation in the adhesion spot of the oil agent was small and good. On the other hand, in cases other than the present invention, not only the yarn breakage was large, but also the discharge fluctuation of the oil agent was large, resulting in inferior productivity and quality stability.

Further, since the pipe connecting portion of the refueling guide is formed in a cylindrical shape as shown in FIG. 1, adjustment and positioning are performed by slightly rotating the pipe connecting portion counterclockwise or clockwise with respect to the front position shown in FIG. The yarn path could be easily adjusted.

[0055]

[Table 1]

[0056]

According to the lubrication guide and the metering lubrication device of the present invention, since foreign matters having a low specific gravity, such as air bubbles and oil separation products, do not stay in the lubrication guide or in the oil feeding pipe at the time of refueling, the foreign matters generated by the stagnation Can be prevented from agglomerating or gelling, and defective ejection of the resulting oil can be prevented.

As a result, thread breakage due to running out of oil or the like, and
Troubles such as tension fluctuations, fluffs, and partially weak yarns due to fluctuations in the amount of oil agent adhesion can be significantly suppressed, and yarn production stability, high processing efficiency, and product quality can be significantly improved.

Further, with the oil supply guide structure of the third aspect, the yarn path can be easily adjusted when the oil supply guide is installed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a fuel supply guide according to the present invention (claims 1 and 2).

FIG. 2 is a front view showing an embodiment of a refueling guide according to the present invention (claims 1 and 2).

FIG. 3 is a longitudinal sectional view showing a conventional refueling guide.

FIG. 4 is a longitudinal sectional view showing one embodiment of the metering and lubricating device of the present invention (claim 3).

[Explanation of symbols]

1: guide body, 2: thread contact groove, 3: upward slope, 4: oil discharge hole, 4 ': outlet of oil discharge hole,
5: Pipe connection part, 6: First half of oil passage in pipe connection part, 7: Second half of oil passage in pipe connection part, 8: Oil supply pipe, 8 ': Oil supply connected to pipe connection part 9: oil return section, 10: oil supply guide, Y: running fiber yarn, 11: oil metering pump,
12: oil discharge section of the oil metering pump, L1: center line of the oil discharge hole, L2: center line of the second half of the oil flow path in the pipe connection section, L3: center line of the first half of the oil flow path in the pipe connection section, H : Horizontal line, θ1: upward angle of the oil agent discharge hole 4, θ2: upward angle of the oil agent flow path front half part 7 in the pipe connection part, θ3: upward angle of the oil agent flow path front half part 6 in the pipe connection part (= connection end part 8) ′ Upward angle)

Claims (3)

(57) [Claims] 1. A thread contact groove (2) extending vertically.
A guide body (1) having an upwardly inclined surface (3) connected above the thread contact groove and an oil agent discharge hole (4) opened to the upwardly inclined surface or the yarn contact groove; A lubrication guide (10) comprising a pipe connection part (5) for connecting to a supply pipe (8), wherein the oil supply guide (10) is connected to an oil agent supply pipe connection end (8 ') connected to the pipe connection part. An oil supply guide characterized in that all of the oil passages to the oil outlet (4 ') are inclined upward by 5 to 45 degrees with respect to the horizontal. 2. The refueling guide according to claim 1, wherein the pipe connecting portion has a cylindrical shape whose axis is a line substantially perpendicular to the vertical direction of the thread contact groove. 3. The oil supply guide (10) according to claim 1, wherein an oil agent metering pump (1) disposed below the oil supply guide.
1) and a metering and lubricating device having an oil feed pipe (8) connecting an oil feed section (12) of the oil metering pump and a pipe connecting section of the oil feed guide, wherein the oil feed pipe is entirely provided. A metering lubrication device characterized by having an upward inclination of 5 degrees or more with respect to the horizontal.