WO2019065745A1

WO2019065745A1 - Oiling nozzle

Info

Publication number: WO2019065745A1
Application number: PCT/JP2018/035715
Authority: WO
Inventors: 祐大遠矢
Original assignee: 京セラ株式会社
Priority date: 2017-09-28
Filing date: 2018-09-26
Publication date: 2019-04-04
Also published as: JPWO2019065745A1; TWI695095B; CN111164245B; JP6995130B2; TW201915233A; CN111164245A

Abstract

An oiling nozzle of the present disclosure is provided with: a guide groove which is sandwiched between a first wall and a second wall and guides a thread from a first end toward a second end; and an oil discharge hole open at the bottom of the guide groove. In addition, the guide groove has a protrusion section, which protrudes higher than the bottom, at a position which along a thread path is closer to the second end than the oil discharge hole. Furthermore, the protrusion section has a recess section recessed in the traveling direction of the thread when viewed in a plan view.

Description

Oiling nozzle

The present disclosure relates to an oiling nozzle.

In guiding the yarn, fiber guides of various shapes called roller guides, oiling nozzles, rod guides and traverse guides are attached to and used in textile machines. Among these, the oiling nozzle is for supplying oil to the yarn in order to make it difficult to cause damage such as scratches or fraying on the yarn. For example, Patent Document 1 describes an oiling nozzle having a projection extending in a direction orthogonal to the yarn traveling direction at the bottom of a guide groove for guiding a yarn.

JP 2002-105740 A

The oiling nozzle of the present disclosure includes a guide groove which is interposed between the first wall and the second wall and guides the yarn from the first end to the second end, and an oil discharge hole opened at the bottom of the guide groove. Prepare. Furthermore, the guide groove has a protrusion that protrudes from the bottom on a thread path closer to the second end than the oil discharge hole. And this projection part has a crevice hollow in the direction of movement of the above-mentioned thread in plane view.

It is a perspective view showing typically an example of the oiling nozzle of this indication. It is sectional drawing along the advancing direction of the thread | yarn in the oiling nozzle shown in FIG. When FIG. 1 is seen from upper side, it is a schematic diagram which shows an example of a structure of the projection part in the oiling nozzle of this indication. When FIG. 1 is seen from upper side, it is a schematic diagram which shows the other example of a structure of the projection part in the oiling nozzle of this indication. When FIG. 1 is seen from upper side, it is a schematic diagram which shows the other example of a structure of the projection part in the oiling nozzle of this indication. When FIG. 1 is seen from upper side, it is a schematic diagram which shows the other example of a structure of the projection part in the oiling nozzle of this indication. When FIG. 1 is seen from upper side, it is a schematic diagram which shows the other example of a structure of the projection part in the oiling nozzle of this indication. When FIG. 1 is seen from upper side, it is a schematic diagram which shows the other example of a structure of the projection part in the oiling nozzle of this indication. It is another example of sectional drawing along the advancing direction of the thread | yarn in the oiling nozzle shown in FIG. It is an enlarged view of S part of FIG. It is an enlarged view of the other example of the S section of FIG.

In recent years, in order to improve production efficiency, the feeding speed of fibers has been extremely increased to 3000 to 8000 m / min. Therefore, in order to reduce damage to the yarn, the oiling nozzle is required to have an oiling nozzle with a small contact area with the yarn while maintaining an appropriate supply of oil to the yarn.

The oiling nozzle of the present disclosure will be described in detail below with reference to the drawings.

The oiling nozzle 10 of the present disclosure, as shown in FIGS. 1 and 2, is a guide that is sandwiched between the first wall 1 and the second wall 2 and guides the yarn 5 from the first end 3 to the second end 4. A groove 6 and an oil discharge hole 8 opened in the bottom 7 of the guide groove 6 are provided.

Here, guidance of the yarn 5 in the oiling nozzle 10 of the present disclosure will be described using FIG. 2. The yarn 5 is fed from the right side with the first end 3 shown in FIG. 2 and guided toward the left side with the second end 4. At this time, the yarn 5 is supplied with the oil jetted from the oil discharge hole 8 communicated with the oil supply passage 12. Also, a portion of the oil supplied to the yarn 5 moves with the yarn 5 traveling to the left with the second end 4.

The guide groove 6 in the oiling nozzle 10 of the present disclosure has a projection 9 that protrudes more than the bottom 7 on the yarn path at a position closer to the second end 4 than the oil discharge hole 8. As described above, since the yarn 5 is guided while being in contact with the projection 9 on the yarn path by having the projection 9, compared with the case where the projection 9 is not provided, The contact area is reduced.

Furthermore, as shown in FIG. 3, the protrusion 9 in the oiling nozzle 10 of the present disclosure has a recess 11 that is recessed in the direction in which the yarn 5 advances in plan view. As described above, since the protrusion 9 has the recess 11, when the thread 5 passes while contacting the protrusion 9, excess oil attached to the thread 5 may be accumulated in the recess 11 of the protrusion 9. it can. On the other hand, for the yarn 5 with a small amount of oil, the oil accumulated in the recess 11 of the projection 9 can be adhered to the yarn 5, and an appropriate amount of oil can be supplied to the yarn 5.

As described above, since the oiling nozzle 10 of the present disclosure includes the projection 9 having the recess 11, the contact area with the yarn 5 is small while maintaining the proper supply of oil to the yarn 5, Damage to the yarn 5 is reduced.

In addition, although the case where the number of objects of the projection part 9 is four is shown in FIG. 2, FIG. 3, the number of objects of the projection part 9 should just be one or more, and two, three or five or more It goes without saying that there may be.

Further, the protrusion 9 in the oiling nozzle 10 of the present disclosure may protrude from a position distant from at least one of the first wall 1 and the second wall 2. In other words, the protrusion 9 in the oiling nozzle 10 of the present disclosure may not be in contact with at least one of the first wall 1 and the second wall 2. If such a configuration is satisfied, excess oil accumulated in the recess 11 of the projection 9 flows out from between the first wall 1 or the second wall 2 and the projection 9 to form excess of the yarn 5. Oil adhesion can be suppressed, and an appropriate amount of oil can be supplied to the yarn 5. For example, the projection shown in FIG. 4 which is not in contact with both the first wall 1 and the second wall 2 than the projection 9a shown in FIG. 3 which is in contact with both the first wall 1 and the second wall 2 In the case of 9 b, excess oil accumulated in the recess 11 is more likely to flow out.

Moreover, as long as it has a recessed part 11, the shape of the projection part 9 in the oiling nozzle 10 of this indication may be what kind of shape. For example, FIG. 3 and FIG. 4 show, in a plan view, the

protrusions

9a and 9b having a semicircular arc shaped recess 11 in a part of a rectangle.

In addition, the projection 9 in the oiling nozzle 10 of the present disclosure may have a shape in which the entire shape in plan view is along the recess 11. If such a configuration is satisfied, when guiding the yarn 5, the yarn 5 swings in a direction (direction from the first wall 1 side to the second wall 2 side) perpendicular to the traveling direction of the yarn 5 However, since the change in the contact area between the yarn 5 and the projection 9 is small, the change in damage to the yarn 5 is small, and the quality is stabilized.

Here, the overall shape in a plan view is the shape along the recess 11 as the U-shaped shape in a plan view such as the projection 9c shown in FIG. 5 or the projection shown in FIG. The shape in plan view such as 9 d is V-shaped or the like. In addition, if it is V-shaped like projection part 9d, excess oil accumulated in crevice 11 will flow out easily.

In addition, the protrusions 9 in the oiling nozzle 10 according to the present disclosure may be located at a plurality of positions so that the fluid flows in a serpentine manner when fluid flows in the guide groove 6. If such a configuration is satisfied, the oil, which is a fluid, flows from the first end 3 side to the second end 4 side so as to meander, so the adjacent protrusions 9 have the first end. The oil overflowing from the recess 11 of the protrusion 9 on the third side can easily flow into the recess 11 of the protrusion 9 on the second end 4 side, and the amount of waste oil can be reduced.

Here, FIG. 7 shows an example in which the plurality of protrusions 9 are positioned so that the fluid flow may meander when fluid flows in the guide groove 6. In FIG. 7, in plan view, with respect to an imaginary straight line passing a bending point (hereinafter referred to as a refracting portion) along the traveling direction of the yarn 5, the line symmetry is symmetrical except that the left and right lengths are different. Certain V-

shaped protrusions

9e and 9f are arranged. In other words, the first length from the refracting portion to the end portion on the first wall 1 side is shorter than the second length from the refracting portion to the end portion on the second wall 2 side, and the first length is Protrusions 9 f longer than the second length are alternately arranged in the advancing direction of the yarn 5. In such a case, the oil, which is a fluid, overflows from the short end of the

protrusions

9e and 9f, so that the flow of oil meanders toward the second end 4 side. Flow to the

Further, the width of the bottom 7 of the guide groove 6 in the oiling nozzle 10 of the present disclosure may be continuously narrowed from the first end 3 to the second end 4 as shown in FIG. 8. If such a configuration is satisfied, the oil overflowing from the recess 11 of the protrusion 9 on the first end 3 side in the adjacent protrusions 9 is collected in the recess 11 of the protrusion 9 on the second end 4 side. It is easy and can reduce the amount of waste oil.

In addition, as shown in FIG. 9, the oiling nozzle 10 of the present disclosure has a plurality of protrusions 9 along the yarn path, and the height of the protrusions 9 on the first end 3 side in adjacent protrusions 9 is , And may be higher than the height of the protrusion 9 on the second end 4 side. Here, the height of the projection 9 is the maximum height from the bottom 7 of the guide groove 6 to a virtual line parallel to the yarn path passing through the apex of the projection 9 in the cross section along the yarn path of the projection 9 It is

If such a configuration is satisfied, in the plurality of protrusions 9, the amount of oil that can be stored in the recesses 11 of the protrusions 9 becomes as large as the protrusions 9 closer to the first end 3 side. When 5 is guided from the first end 3 to the second end 4, an appropriate amount of oil can be supplied to the yarn 5.

Further, in the oiling nozzle 10 of the present disclosure, as shown in FIG. 10, the top 13 of at least one protrusion 9 has a curvature radius of 0.3 mm or more and 0.8 mm in a cross section along the yarn path of the protrusion 9. It may be circular arc shape which is the following. If such a configuration is satisfied, the shape of the top portion 13 of the projection 9 in contact with the yarn 5 becomes a shape that does not easily damage the yarn 5 and the contact area with the yarn 5 can be reduced. There is less damage to 5.

The radius of curvature of the top portion 13 of the projection 9 is measured by taking a cross section of the projection 9 along the yarn path as a measurement surface and photographing this measurement surface at a magnification of 10: 1 to 100: 1 using an optical microscope. , You may calculate from the photograph.

Further, in the oiling nozzle 10 of the present disclosure, the apex of at least one protrusion 9 is, as shown in FIG. 10, along the lowermost yarn path in the protrusion 9 in the cross section along the yarn path of the protrusion 9. You may be located in the 1st end 3 side rather than the center B of length A of the other direction. Here, the apex of the projection 9 is the highest point on the top 13 of the projection 9 in the cross section along the yarn path of the projection 9.

And if such a configuration is satisfied, the oil accumulated in the concave portion 11 of the projection 9 is unlikely to easily overflow from the projection 9, so that the oil can be stably attached to the yarn 5. , Damage to the yarn 5 when guiding is less.

Further, in the oiling nozzle 10 of the present disclosure, as shown in FIG. 11, at least one protrusion 9 has a first radius of curvature of the second end side corner 14 in a cross section along the thread path of the protrusion 9. The radius of curvature of the end corner 15 may be larger. If such a configuration is satisfied, oil can be stably attached to the yarn 5, and the yarn 5 can be prevented from jumping when the yarn 5 is separated from the projection 9, and the yarn 5 can be made smooth. Because it can slide, damage to the yarn 5 is less.

The radius of curvature of the second end side corner 14 may be, for example, 0.3 mm or more and 0.8 mm or less. Also, the radius of curvature of the first end side corner 15 may be, for example, 0.2 mm or more and 0.5 mm or less.

Here, the measurement of the radius of curvature of the second end side corner 14 and the first end side corner 15 of the projection 9 uses the cross section of the projection 9 along the yarn path as a measurement surface, and this measurement surface is used as an optical microscope The image may be taken at a magnification of 10: 1 to 100: 1 and calculated from the photograph.

Moreover, although the oiling nozzle 10 of this indication may be comprised with what kind of material, if it consists of ceramics, compared with the case where it consists of metals or resin, a frictional heat when contacting with the thread 5 Is less likely to occur. This reduces the possibility of damaging the yarn 5 due to the generated frictional heat. Here, examples of the ceramic include alumina-based ceramics, zirconia-based ceramics, titania-based ceramics, silicon carbide-based ceramics, silicon nitride-based ceramics, and composites of these.

In particular, among the ceramics, alumina ceramic is an inexpensive material, so if the oiling nozzle 10 of the present disclosure is made of alumina ceramic, the cost can be reduced. Here, the alumina-based ceramic is one in which 80% by mass or more of alumina is contained in 100% by mass of all the 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 value of 2θ (2θ is a diffraction angle). Next, quantitative analysis of the contained components is performed using a fluorescent X-ray analyzer (XRF). And, for example, if the presence of alumina is confirmed by identification by XRD, and the content of Al converted to alumina (Al ₂ O ₃ ) measured by XRF is 80 mass% or more, it is an alumina ceramic. .

Next, an example of a method of manufacturing the oiling nozzle 10 of the present disclosure will be described. Here, the case where the oiling nozzle 10 is made of ceramic will be described as an example.

First, powders of alumina, zirconia, titania, silicon carbide, silicon nitride or their composites as main raw materials and a sintering aid are mixed in a predetermined ratio to obtain mixed raw materials. Next, the mixed raw material and the solvent are placed in a ball mill together with balls, and crushed to a predetermined particle size to obtain a slurry.

Next, a binder is added to the obtained slurry, and then spray dried using a spray drier to obtain granules. Next, the granules are charged into a mechanical press and pressure is applied to form a molded body, and the molded body is subjected to cutting and the like to form an oil nozzle shaped molded body having the protrusions 9.

Alternatively, the above slurry may be spray-dried with a spray dryer and then added with a binder, and pellets obtained by kneading with a kneader may be used to obtain a molded body by injection molding. In this case, in the injection molding, a mold which is a molded body of an oiling nozzle shape having the protrusions 9 may be used.

Then, in the case of an alumina powder as the main component, for example, when the alumina powder is a main component, the obtained oil nozzle-shaped compact has a maximum temperature of 1450 ° C. or more and 1750 ° C. or less in the air atmosphere, and the holding time at this maximum temperature is 1 hour By firing as above for 8 hours or less, the oiling nozzle 10 of the present disclosure can be obtained.

1: first wall 2: second wall 3: first end 4: second end 5: thread 6: guide groove 7: bottom 8: oil discharge hole 9: protrusion 10: oiling nozzle 11: recess 12: oil supply Road 13: top 14: radius of curvature of the second end corner 15: radius of curvature of the first end corner

Claims

A guide groove interposed between the first wall and the second wall for guiding the yarn from the first end to the second end; and an oil discharge hole opened at the bottom of the guide groove;
The guide groove has a protrusion protruding from the bottom on a yarn path closer to the second end than the oil discharge hole.
The oiling nozzle, wherein the projection has a recess recessed in a direction in which the yarn travels in a plan view.
The oiling nozzle according to claim 1, wherein the protrusion protrudes from a position distant from at least one of the first wall and the second wall.
The oiling nozzle according to claim 1 or 2, wherein the projection has an overall shape in a plan view that follows the recess.
The oiling nozzle according to any one of claims 1 to 3, wherein a plurality of the protrusions are positioned such that the flow of the fluid meanders when the fluid flows in the guide groove.
The oiling nozzle according to any one of claims 1 to 4, wherein a width of a bottom of the guide groove narrows continuously from the first end to the second end.
A plurality of the protrusions are provided along the yarn path, and in the adjacent protrusions, the height of the protrusions at the first end is higher than the height of the protrusions at the second end. The oiling nozzle according to any one of claims 1 to 5.
The top portion of at least one of the protrusions is an arc shape having a radius of curvature of 0.3 mm or more and 0.8 mm or less in a cross section along the yarn path of the protrusions. Oiling nozzle described in crab.
The apex of at least one of the projections is closer to the first end than the center of the length of the lowermost portion of the projections along the yarn path in a cross section along the yarn path of the projections. An oiling nozzle according to any of the preceding claims, wherein the oiling nozzle is located.
The radius of curvature of the second end side corner is larger than the radius of curvature of the first end side corner in a cross section of the at least one protrusion along the thread path of the protrusion. Item 9. The oiling nozzle according to any one of items 8.