WO2018003801A1

WO2018003801A1 - Oiling nozzle

Info

Publication number: WO2018003801A1
Application number: PCT/JP2017/023584
Authority: WO
Inventors: 祐大遠矢
Original assignee: 京セラ株式会社
Priority date: 2016-06-29
Filing date: 2017-06-27
Publication date: 2018-01-04
Also published as: CN109415845A; EP3461935A4; EP3461935A1; EP3461935B1; CN109415845B; JPWO2018003801A1; JP6680879B2

Abstract

This oiling nozzle is provided with a feed-in section, a feed-out section, and a middle section which is positioned between the feed-in section and the feed-out section and is in contact with a fabric, wherein: the middle section has an oil discharging hole located in the feed-in section side and a plurality of groove-shaped oil reservoirs, which are perpendicular to the fiber path, on the feed-out section side from the oil discharge hole; and in the cross-section taken along the fiber path, a first oil reservoir, which is the closest to the oil discharge hole from among the plurality of oil reservoirs, has the largest cross-sectional area.

Description

Oiling nozzle

This disclosure relates to an oiling nozzle.

In fiber guidance, various shapes of fiber guides called roller guides, oiling nozzles, rod guides, traverse guides, and the like are attached to a textile machine and used. Here, the oiling nozzle is expected to supply an optimal amount of oil to the fiber and reduce the unevenness of oil adhesion in order to make it difficult to cause damage such as scratches and fraying on the fiber guided at high speed. Has been. For example, Patent Document 1 describes an oil supply guide having an oil discharge hole and an oil reservoir adjacent to the oil discharge hole formed on the fiber contact surface.

Japanese Patent Laid-Open No. 7-252716

The oiling nozzle of the present disclosure includes a feeding portion, a feeding portion, and an intermediate portion that is located between the feeding portion and the feeding portion and contacts the fiber. And this intermediate part has the oil discharge hole located in the said feeding part side, and the several groove-like oil reservoir orthogonal to the course of the said fiber to the said sending part side from this oil discharge hole. And in the cross section along the path of the fiber, the cross-sectional area of the first oil reservoir closest to the oil discharge hole among the plurality of oil reservoirs is the largest.

It is a perspective view showing typically an example of the oiling nozzle of this indication. It is sectional drawing along the course of the fiber in the oiling nozzle shown in FIG. FIG. 3 is an enlarged view near an oil reservoir in the cross-sectional view of FIG. 2.

In recent years, in order to improve production efficiency, the fiber feeding speed has been extremely increased to 3000 to 10000 m / min. Therefore, in order to suppress damage to the fiber, a uniform supply of oil to the fiber is required. In addition, in order to reduce the environmental load, it is also required to reduce the amount of oil used.

The oiling nozzle of the present disclosure can suppress damage to the fiber and reduce the amount of oil used by uniformly supplying the oil to the fiber. Hereinafter, the oiling nozzle of the present disclosure will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the oiling nozzle 10 of the present disclosure is located between the feeding unit 30, the feeding unit 40, and the intermediate unit 20 that is in contact with the fiber 1 and is positioned between the feeding unit 30 and the feeding unit 40. With. The intermediate portion 20 includes an oil discharge hole 50 positioned on the feeding portion 30 side, and a plurality of groove-like oil reservoirs 60 orthogonal to the path of the fiber 1 on the sending portion 40 side from the oil discharge hole 50. Have.

In addition, the sending part 30 side of the intermediate part 20 is a part closer to the sending part 30 than the sending part 40 in the intermediate part 20, and is located on the right side in FIG. On the other hand, the sending part 40 side of the intermediate part 20 is a part closer to the sending part 40 than the sending part 30 in the intermediate part 20, and is located on the left side in FIG.

Next, the guidance of the fiber 1 by the oiling nozzle 10 of the present disclosure will be described. The fiber 1 is fed from the right side shown in FIG. 2, enters from the feeding section 30, and advances toward the feeding section 40 while sliding on the intermediate section 20. At this time, the fiber 1 is supplied with the oil ejected from the oil discharge hole 50 communicating with the oil supply path 70. Further, a part of the oil supplied to the fibers 1 moves together with the fibers 1 traveling in the direction of the delivery unit 40 and accumulates in a plurality of oil reservoirs 60. The oil accumulated in the plurality of oil reservoirs 60 serves as an oil supply source to the fiber 1 that travels from the feeding section 30 toward the feeding section 40. The oil reservoir 60 is also a storage location for oil that has been excessively supplied.

In the example of FIG. 2, the number of oil reservoirs 60 is four, but the number of oil reservoirs may be plural, and may be two, three, or five or more. Needless to say.

And the oiling nozzle 10 of this indication has the largest cross-sectional area S1 of the 1st oil sump 61 nearest to the oil discharge hole 50 among the some oil sumps 60 in the cross section along the path of the fiber 1. By satisfying such a configuration, the oiling nozzle 10 of the present disclosure can realize the optimization of the required oil amount of the fiber 1 at an early stage.

Specifically, by satisfying the above configuration, when the amount of oil ejected from the oil discharge hole 50 is excessive, excessive oil is stored in the first oil reservoir 61. When the amount of oil ejected from the oil discharge hole 50 is small, the oil stored in the first oil reservoir 61 is supplied. Therefore, according to the oiling nozzle 10 of the present disclosure, when the oil oil passes through the first oil reservoir 61, the required oil amount of the fiber 1 is substantially optimized, and damage to the fiber 1 is suppressed. In addition, since less oil flows out from the delivery unit 20, the amount of oil used can be reduced.

Here, the cross-sectional area of each of the plurality of oil reservoirs 60 is a cross section along the path of the fiber 1 as a measurement surface, a photograph is taken at a magnification of 10 to 100 times using an optical microscope, and image analysis software is used. To calculate. As the image analysis software, for example, image analysis software “A image kun” (registered trademark, manufactured by Asahi Kasei Engineering Co., Ltd.) may be used.

Further, in the oiling nozzle 10 of the present disclosure, in the cross-sectional area of the plurality of oil reservoirs 60, S1, S2,..., Sn farthest from the oil discharge hole 50 are defined as Sn. S1 ≧ S2 ≧... ≧ Sn (where S1 ≠ Sn) may be used. Here, according to the example shown in FIG. 2, the plurality of oil reservoirs 60 are the first oil reservoir 61, the second oil reservoir 62, the third oil reservoir 63, and the fourth oil reservoir 64. The sectional area of the first oil reservoir 61 is S1, the sectional area of the second oil reservoir 62 is S2, the sectional area of the third oil reservoir 63 is S3, and the sectional area of the fourth oil reservoir 64 is S4. In this example, since the number of the oil reservoirs 60 is 4, n = 4.

When the cross-sectional area of the oil reservoir 60 is S1 ≧ S2 ≧ S3 ≧ S4 (where S1 ≠ S4), that is, when the cross-sectional area is reduced from the oil discharge hole 50 side toward the delivery portion 40 side, Optimization of the required oil quantity of 1 is realized even earlier. As a result, damage to the fiber 1 can be suppressed, and at the same time, the amount of oil used can be reduced.

Note that the cross-sectional areas are S1 ≧ S2 ≧ S3 ≧ S4 (where S1 ≠ S4), S1 = S2 = S3> S4, S1> S2 = S3 = S4, S1 = S2> S3 = S4, S1> S2 > S3> S4 and the like are exemplified.

Further, the cross-sectional area S1 of the first oil reservoir 61 may be 1.2 times or more and 2.0 times or less of the cross-sectional area S4 of the fourth oil reservoir 64. If such a configuration is satisfied, damage to the fiber 1 is further suppressed.

Further, as shown in FIG. 3, in the first oil reservoir 61, the radius of curvature A1 of the feeding portion 30 side corner may be larger than the radius of curvature B1 of the sending portion 40 side corner (A1> B1).

If such a configuration is satisfied, the oil ejected from the oil discharge hole 50 can easily enter the oil reservoir 61, so that the oil that has entered the oil reservoir 61 can be easily supplied to the fiber 1 while the oil is easily supplied. It becomes difficult to come out from 61. Therefore, since a favorable oil supply can be achieved, damage to the fiber 1 is further suppressed.

Also, even in the plurality of oil reservoirs 60, when the radius of curvature of the feeding portion 30 side corner is larger than the radius of curvature of the sending portion 40 side corner, damage to the fiber 1 is further suppressed.

Further, among the curvature radii of the plurality of oil reservoirs 60 at the inlet portion 30 side corner, the radius of curvature A1 of the first oil reservoir 61 at the inlet portion side may be the largest. If such a configuration is satisfied, the oil ejected from the oil discharge hole 50 can easily enter the first oil reservoir 61 closest to the oil discharge port 50. Therefore, the oil can be sufficiently supplied, so that damage to the fiber 1 is further suppressed.

When the radius of curvature of the corners of the plurality of oil reservoirs 60 on the inlet side 30 is A1, A2,... From the side closer to the oil discharge hole 50 and An is the farthest from the oil discharge hole 50, A1 ≧ A2 ≧... ≧ An (where A1 ≠ An). If such a configuration is satisfied, excessive oil entry into the oil reservoir farthest from the oil discharge hole 50 is suppressed, and less oil flows out. As a result, the amount of oil used can be reduced, and a good oil supply can be achieved, so that damage to the fiber 1 is further suppressed.

Further, the radius of curvature B1 of the corner of the first oil reservoir 61 on the side of the delivery section 40 may be the largest among the radii of curvature of the corners on the side of the delivery section 40 of the plurality of oil reservoirs 60. If such a configuration is satisfied, the oil can be smoothly transferred to the next second oil reservoir 62 when the oil ejected from the oil discharge port 50 is supplied. Therefore, the oil can be sufficiently supplied, so that damage to the fiber 1 is further suppressed.

Further, when the radius of curvature of the corners on the delivery section 40 side of the plurality of oil reservoirs 60 is B1, B2,... Farthest from the oil discharge hole 50, and Bn is the farthest from the oil discharge hole 50, B1 ≧ B2 ≧... ≧ Bn (B1 ≠ Bn) may be satisfied. If such a configuration is satisfied, oil leakage from the oil reservoir farthest from the oil discharge hole 50 is suppressed, and less oil flows out. As a result, the amount of oil used can be reduced, and a good oil supply can be achieved, so that damage to the fiber 1 is further suppressed.

In addition, the measurement of the curvature radius of the corner of the feeding portion 30 and the curvature radius of the corner of the delivery portion 40 in each oil reservoir 60 is performed in the course of the fiber 1 in the same manner as when the cross-sectional area of each oil reservoir 60 is obtained. The cross section taken along is taken as a measurement surface, and a cross-sectional photograph is taken at a magnification of 10 to 100 times using an optical microscope, and the calculation can be performed from this photograph.

Further, the material of the oiling nozzle 10 of the present disclosure is not limited. If the oiling nozzle 10 of the present disclosure is made of ceramics, frictional heat is less likely to be generated compared to a case of being made of metal or resin. Here, examples of the ceramic include alumina ceramics, zirconia ceramics, titania ceramics, silicon carbide ceramics, silicon nitride ceramics, and composites thereof.

In particular, alumina ceramics are an inexpensive material among ceramics, and therefore the cost can be reduced if the oiling nozzle 10 of the present disclosure is made of alumina ceramics. Here, the alumina ceramic is one in which alumina accounts for 80% by mass or more out of 100% by mass of all components constituting the ceramic.

The material of the oiling nozzle 10 may be confirmed by the following method. First, the oiling nozzle 10 is measured using an X-ray diffractometer (XRD), and identification is performed using a JCPDS card from the obtained 2θ (2θ is a diffraction angle) value. Next, quantitative analysis of the contained components is performed using a fluorescent X-ray analyzer (XRF). For example, if the presence of alumina is confirmed by the above identification and the content converted to alumina (Al ₂ O ₃ ) from the Al content measured by XRF is 80% by mass or more, it is an alumina ceramic.

Next, an example of a method for manufacturing the oiling nozzle according to the present disclosure will be described. Here, the case where the oiling nozzle is made of ceramic will be described as an example.

First, alumina, zirconia, titania, silicon carbide, silicon nitride as a main raw material, or a composite powder thereof and a sintering aid are mixed at a predetermined ratio to obtain a mixed raw material. Next, the mixed raw material and the solvent are put in a ball mill together with balls and pulverized to a predetermined particle size to obtain a slurry.

Next, after adding a binder to the obtained slurry, spray drying is performed using a spray dryer to obtain granules. Next, this granule is put into a mechanical press, and pressure is applied to obtain an oiling nozzle shaped molded body.

Then, by subjecting this molded body to cutting or the like, it is possible to obtain the molded body in the shape of an oiling nozzle having oil reservoirs having different cross-sectional areas.

In addition, you may obtain a molded object by the injection molding method using the pellet which added the binder after spray-drying the said slurry with a spray dryer, and knead | mixed with the kneader. In this case, a mold that forms an oiling nozzle-shaped molded body having oil reservoirs having different cross-sectional areas may be used. Further, the radius of curvature of the feeding portion side corner and the radius of curvature of the sending portion side corner in each oil reservoir can be set to arbitrary sizes by cutting or changing the shape of the mold.

Then, when the obtained oiling nozzle-shaped molded body is composed mainly of alumina powder, for example, the maximum temperature is 1450 ° C. or higher and 1750 ° C. or lower in the air atmosphere, and the holding time at this maximum temperature is 1 hour. The oiling nozzle of the present disclosure can be obtained by firing for 8 hours or less.

First, 99.0% by mass of alumina powder as the main raw material, and calcia powder and silica powder as the sintering aid were weighed and mixed so as to be 0.5% by mass to obtain a mixed raw material. Next, the mixed raw material and the solvent were put together with balls in a ball mill and pulverized to a predetermined particle size to obtain a slurry.

Thereafter, the slurry was spray-dried with a spray dryer, a binder was added, and kneaded with a kneader to obtain pellets. Then, using this pellet, an oiling nozzle-shaped molded body was obtained by an injection molding method using a mold having an oiling nozzle shape having oil reservoirs having different cross-sectional areas.

The obtained oiling nozzle-shaped molded body was fired in an air atmosphere at a maximum temperature of 1680 ° C. and a holding time at the maximum temperature of 1 hour to obtain an oiling nozzle-shaped sintered body. Then, each sample was obtained by finishing with a barrel grinder.

The number of oil reservoirs was four, and the cross-sectional area of each oil reservoir in each sample was set to the value shown in Table 1. Here, the four oil reservoirs are referred to as a first oil reservoir, a second oil reservoir, a third oil reservoir, and a fourth oil reservoir in order from the side closer to the oil discharge hole. The cross-sectional area of the first oil sump is S1, the cross-sectional area of the second oil sump is S2, the cross-sectional area of the third oil sump is S3, and the cross-sectional area of the fourth oil sump is S4. Further, the radius of curvature of the inlet side corner and the radius of curvature of the outlet side corner of each oil reservoir in the cross section along the fiber path were each 0.34 mm.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured. In this measurement, a fiber containing 1.2% by mass of titanium oxide having an average crystal grain size of 1.2 μm, 75 denier, 36 filaments, and a square cross section was used. The oil was applied in an amount of 2 to 4% by mass with respect to the mass of the fiber, and a water emulsion oil was used. The fiber feed rate was 5000 m / min. The results are shown in Table 1.

From the results shown in Table 1, the sample No. with the largest cross-sectional area S4 is shown. In 1, the time until damage was confirmed on the fiber was as short as 350 hours. In addition, the sample No. in which the cross-sectional area relationship is S1 = S2 = S3 = S4. No. 2 was as short as 370 hours until the fiber was confirmed to be damaged. On the other hand, the sample No. having the largest cross-sectional area S1. In 3-10, the time until the fiber was confirmed to be damaged was as long as 400 hours or more. From this, it was found that the damage to the fiber 1 is suppressed if the oiling nozzle has the largest cross-sectional area S1 of the first oil reservoir closest to the oil discharge hole among the plurality of oil reservoirs.

Sample No. As a result of the comparison of 3 and 4, the sample No. with the cross-sectional area gradually decreasing from S1 to S4 In the case of No. 4, it took longer to confirm damage to the fibers. From this, it was found that if the oiling nozzle has a cross-sectional area relationship of S1> S2> S3> S4, damage to the fiber 1 is further suppressed.

Sample No. Among sample 3-10, sample no. In 5-9, the time until the fiber was confirmed to be damaged was as long as 480 hours or more. From this, it was found that if the oiling nozzle has a cross-sectional area S1 of 1.2 times or more and 2.0 times or less of the cross-sectional area S4, damage to the fiber 1 is further suppressed.

Next, in the first oil reservoir, samples were prepared in which the radius of curvature of the inlet side corner and the radius of curvature of the outlet side corner were different. In addition, as a manufacturing method of each sample, the sample No. 1 of Example 1 was used except that the radius of curvature of the corner of the delivery section side of the first oil reservoir was the value shown in Table 2. 6 was the same as the manufacturing method. Sample No. 11 shows the sample No. of Example 1. Same as 6. Here, it is assumed that the radius of curvature of the feeding portion side corner in the first oil reservoir is A1, and the radius of curvature of the sending portion side corner is B1.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured by the same method as in Example 1. The results are shown in Table 2.

From the results shown in Table 2, sample No. Compared to sample No. 11, sample no. No. 12 had a long time of 540 hours until the fiber was confirmed to be damaged. From this, it can be seen that in the first oil pool, if the oiling nozzle has a radius of curvature A1 of the inlet side corner larger than the radius of curvature B1 of the outlet side corner, damage to the fiber 1 is further suppressed. It was.

Next, samples having different curvature radii at the inlet side corner and at the outlet side corner were prepared in a plurality of oil reservoirs. In addition, as a method for producing each sample, the sample N.I. of Example 2 was used except that the curvature radius of the corners on the delivery part side of the plurality of oil reservoirs was the value shown in Table 3. 12 was the same as the manufacturing method. Sample No. 13 is the sample No. of Example 2. 12 is the same. Here, in the second oil reservoir, the radius of curvature of the feeding portion side corner is A2, and the radius of curvature of the sending portion side corner is B2. Further, in the third oil reservoir, the radius of curvature of the feeding portion side corner is A3, and the curvature radius of the sending portion side corner is B3. Further, in the fourth oil reservoir, the radius of curvature of the feeding portion side corner is A4, and the radius of curvature of the sending portion side corner is B4.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured by the same method as in Example 1. The results are shown in Table 3.

From the results shown in Table 3, sample No. Compared to sample No. 13, sample no. No. 14 had a long time of 560 hours until the fiber was confirmed to be damaged. From this, it was found that, in a plurality of oil reservoirs, damage to the fiber 1 is further suppressed if the oiling nozzle has a radius of curvature of the inlet portion side corner larger than that of the outlet portion side corner.

Next, samples with different curvature radii at the inlet side corners of a plurality of oil reservoirs were prepared. In addition, as a method for producing each sample, the sample N.I. of Example 3 was used except that the radius of curvature of the inlet side corners of the plurality of oil reservoirs was set to the values shown in Table 4. 14 was the same as the manufacturing method. Sample No. 15 is the sample No. of Example 3. 14 is the same.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured by the same method as in Example 1. The results are shown in Table 4.

From the results shown in Table 4, sample no. Sample No. Nos. 16 and 17 had a long time of 580 hours or more until the fiber was confirmed to be damaged. Therefore, if the oiling nozzle has the largest curvature radius A1 at the inlet side corner of the first oil sump among the curvature radii at the inlet side corners of the plurality of oil reservoirs, damage to the fiber 1 is further suppressed. I found out that

Sample No. Sample no. No. 17 took 600 hours longer to confirm damage to the fiber. From this, it was found that the damage to the fiber 1 is further suppressed if the oiling nozzle satisfies the relationship of the radius of curvature of the oil reservoir feeding portion side corner as A1> A2> A3> A4.

Next, samples with different curvature radii at the corners on the delivery part side of the plurality of oil reservoirs were prepared. In addition, as a method for producing each sample, the sample N.I. of Example 4 was used except that the radius of curvature of the delivery portion side corners of the plurality of oil reservoirs was the values shown in Table 5. This was the same as the manufacturing method of No. 17. Sample No. 18 shows the sample No. of Example 4. 17 is the same.

Next, when the fiber was guided by each sample, the time until the fiber was confirmed to be damaged was measured by the same method as in Example 1. The results are shown in Table 5.

From the results shown in Table 5, sample No. Compared to sample No. 18, sample no. 19 and 20 had a long time of 620 hours or more until the fiber was confirmed to be damaged. From this, if it is an oiling nozzle with the largest curvature radius B1 of the sending part side corner of a 1st oil sump among the curvature radii of the sending part side corner of a some oil reservoir, the damage to the fiber 1 will be suppressed more. I understood it.

Sample No. Sample no. In the case of 20, the time until damage was confirmed on the fiber was 640 hours. From this, it was found that the damage to the fiber 1 is further suppressed if the oiling nozzle satisfies the relationship of the radius of curvature of the oil sump delivery portion side corner B1> B2> B3> B4.

1: Fiber 10: Oiling nozzle 20: Intermediate part 30: Inlet part 40: Outlet part 50: Oil discharge hole 60: Oil reservoir 61: First oil reservoir 62: Second oil reservoir 63: Third oil reservoir 64: First 4 Oil reservoir 70: Oil supply path

Claims

An infeed section, an outfeed section, and an intermediate section located between the infeed section and the outfeed section and in contact with the fiber, the intermediate section including an oil discharge hole positioned on the infeed section side; A plurality of groove-like oil reservoirs orthogonal to the fiber path on the delivery part side from the oil discharge hole, and in the cross section along the fiber path, of the plurality of oil reservoirs, Oiling nozzle with the largest cross-sectional area of the first oil reservoir closest to the oil discharge hole.
In the cross-sectional areas of the plurality of oil reservoirs, S1, S2,..., Sn that is farthest from the oil discharge holes, S1 ≧ S2 ≧. The oiling nozzle according to claim 1, wherein S1 ≠ Sn.
The oiling nozzle according to claim 2, wherein the S1 is 1.2 times or more and 2.0 times or less of the Sn.
The oiling nozzle according to any one of claims 1 to 3, wherein, in the first oil reservoir, a radius of curvature of the inlet portion side corner is larger than a radius of curvature of the outlet portion side corner.
The oiling nozzle according to any one of claims 1 to 3, wherein, in the plurality of oil reservoirs, a curvature radius of the feeding portion side corner is larger than a curvature radius of the sending portion side corner.
The oiling according to any one of claims 1 to 5, wherein a radius of curvature of the corner of the first oil reservoir in the inlet portion of the first oil reservoir is largest among the radius of curvature of the corner of the inlet portion of the plurality of oil reservoirs. nozzle.
When the radius of curvature of the plurality of oil reservoirs at the inlet side corners is A1, A2,... From the side closer to the oil discharge hole, and An is the furthest from the oil discharge hole, A1 ≧ A2 The oiling nozzle according to any one of claims 1 to 5, wherein ≧... ≧ An (where A1 ≠ An).
The oiling nozzle according to any one of claims 1 to 7, wherein a radius of curvature of the corner of the first oil reservoir in the outlet section of the first oil reservoir is the largest among the radius of curvature of the corner of the outlet section of the plurality of oil reservoirs.
When the radius of curvature of the plurality of oil reservoirs at the corners on the delivery section side is B1, B2,... Farthest from the oil discharge hole, and Bn is the farthest from the oil discharge hole, B1 ≧ B2 ≧ The oiling nozzle according to any one of claims 1 to 7, wherein ≧ Bn (B1 ≠ Bn).