JP4220862B2 - Oiling nozzle, manufacturing method thereof, and fiber manufacturing apparatus using the same - Google Patents

Description

  The present invention relates to an oiling nozzle for applying oil comprising an oil agent to a yarn after melt spinning of a synthetic fiber, a manufacturing method thereof, and a fiber manufacturing apparatus using the same.

  In the process of eluting yarns consisting of single yarns such as polyamide and polyester, oil containing lubricants and antistatic agents is applied to the yarns obtained by elution from the nozzle. Oiling nozzles are widely used for this oil application. This oiling nozzle has an oil supply hole that steadily discharges oil in the vicinity of the groove bottom of the yarn path groove where the yarn runs, and the oil discharged from the oil discharge hole moistens the sliding surface of the thread path groove. The oil is applied to the yarn that is in sliding contact therewith.

  Various types of oiling nozzles have been proposed in the past. For example, as shown in FIGS. 6 (a) and 6 (b), the oiling nozzle 21 is provided with an oil supply hole opened in a V-groove-shaped yarn path groove 22 for guiding the yarn Y and a groove bottom 23 of the yarn path groove 22. 27, oil is discharged from the oil supply hole 27 to moisten the sliding surface 24 of the yarn path groove 22, and the yarn Y traveling on the sliding surface 24 of the yarn path groove 22 is brought into sliding contact with the yarn Y. Oil is applied, and the sliding surface 24 of the yarn path groove 22 is formed of ceramics such as alumina and titania. Note that the yarn Y travels in the direction of gravity, and the upper direction in FIG. 6, which is the side on which the yarn Y enters, is called the entrance side of the yarn path groove 22, and on the contrary, on the side on which the yarn Y runs out. The downward direction of FIG. 6 is called the exit side of the yarn path groove 22. Hereinafter, the same applies to other drawings.

  Further, as shown in the oiling nozzle 31 of FIG. 7, an oil supply hole 37 opened on the inlet side of the groove bottom 33 of the yarn path groove 32 is provided, and an oil reservoir 38 is formed on the groove bottom 33 of the yarn path groove 32. It is known that the oil discharged from the oil supply hole 37 is stored in an oil reservoir 38 formed on the outlet side so that the oil is evenly applied to the traveling yarn Y (Patent Document 1).

  As such an oil reservoir 38 is provided by another method, a rotating body (not shown) in which a plurality of irregularities are formed in a direction perpendicular to the running direction of the yarn Y is disposed on the groove bottom 33 of the yarn path groove 32. And the oiling nozzle which used the uneven | corrugated | grooved part as the oil reservoir 38 is also proposed (patent document 2).

And by applying oil uniformly to the yarn Y, it is possible to prevent defects such as yarn breakage of the yarn Y in subsequent stretching and winding, and to reduce damage to the yarn Y. The strength of the yarn Y can be improved.
JP-A-10-102315 JP-A-5-239708

  By the way, in recent years, many synthetic fibers have an irregularly shaped yarn cross section, and in order to increase production efficiency, the yarn feed rate is as high as 3000 to 8000 m / min. In contrast, the generation of turbulent air flow caused by the running of the yarn Y itself, the variation in the surface condition of the sliding surface 24 of the yarn path groove 22 where the oil discharged from the oil supply hole 27 flows down, or the yarn Y and the oil supply The oil does not flow down from the oil supply hole 27 in the running direction (exit side) of the yarn Y due to the deviation of the running position with respect to the hole 27 and the right or left side surface of the V-groove-shaped yarn path groove 22. It may cause a drift phenomenon that flows down. If the moisture of oil on the yarn path groove 22 drifts, it becomes difficult to apply oil to the uniform yarn Y, and the sliding surface 24 and the thread of the yarn path groove 22 that are not sufficiently moistened with oil. By rubbing with Y, the yarn Y is greatly damaged, and defects such as yarn breakage occur. Moreover, the oil that has not been applied scatters and causes contamination of the fiber manufacturing apparatus and the atmosphere.

  At the same time, the sliding surface 24 of the yarn path groove 22 that is not sufficiently moistened with oil and the yarn Y are abraded, so that there is no lubrication effect due to the oil, and there is a problem that the sliding surface 24 is easily worn. . Therefore, when this portion is worn, the frictional resistance with the yarn Y is increased, and as a result, the oiling nozzle 21 must be replaced in a short service period of about one month in order to damage the yarn Y. was there.

  In addition, if uniform oil application is not applied to the running yarn Y, in the subsequent winding process, the fluctuation of the frictional resistance of the oil non-adhered part becomes large, and the fiber of the oil non-adhered part is abraded on the yarn path. As a result, the quality of the yarn Y was deteriorated, such as being worn and having a lot of fluff due to single yarn breakage.

  Further, the abrasion powder of the yarn Y due to this abrasion and wear accumulates on the sliding surface 24 of the yarn path groove 22, so that the oil drift phenomenon is further amplified, and the abrasion powder adheres to the yarn Y. Thus, there is a problem in that the single yarn breakage or the yarn breakage of the yarn Y is promoted by running.

  On the other hand, the oiling nozzle 31 shown in FIG. 7 is provided with an oil reservoir 38 at the groove bottom 33 of the yarn path groove 32. Since these oil reservoirs 38 are arranged in a direction perpendicular to the running direction of the yarn Y, It was difficult to prevent the oil drift phenomenon.

  Accordingly, the present invention prevents oil drift on the yarn path groove of the oiling nozzle, prevents friction between the sliding surface of the yarn path groove and the thread, and generation of wear powder due to wear. The oiling nozzle for the purpose of making the oil application to the yarn uniform by preventing this oil drift, improving the properties of the yarn, and improving the stability of the fiber manufacturing process including oil application, and An object of the present invention is to provide a manufacturing method and a fiber manufacturing apparatus using the manufacturing method.

In view of the above problems, the present invention is an oil ring nozzle that applies oil to the yarn while being in sliding contact with the traveling yarn, and has a V-groove shape that slides in contact with the yarn and guides the yarn. A groove, and an oil supply hole opened at a groove bottom of the yarn path groove, and the oil supply hole approaches one side along the length direction of the yarn path groove as the opening is approached. A plurality of fine grooves inclined so as to approach the other side along the length direction of the yarn path groove are formed on the side surface of the V groove of the yarn path groove. The fine groove is an oil ring nozzle provided on the one side with respect to the opening and on the downstream side with respect to the opening .

  The fine groove is preferably an oiling nozzle formed with an inclination of 10 ° to 60 ° with respect to the yarn traveling direction.

  It is preferable to use an oiling nozzle formed so that the groove width of the fine groove is in the range of 0.05 to 0.3 mm and the groove depth is in the range of 0.01 to 0.2 mm.

  The fine groove of the oiling nozzle is preferably formed by laser processing.

  And having a spinning nozzle for eluting the yarn, applying oil to the yarn using the oiling nozzle for the eluted yarn, drawing the oil-attached yarn with a feed roller, It is set as the fiber manufacturing apparatus with which a fiber is manufactured by winding by.

  According to the oiling nozzle of the present invention, the fine groove inclined toward the yarn running direction is formed on the sliding surface of the yarn path groove, so that the oil discharged from the oil supply hole is accumulated in the fine groove, Oil can be guided and collected at the groove bottom of the V-groove-shaped yarn path groove due to the gravitational flow and the suction effect by applying oil to the running yarn.

  In addition, when the yarn Y passes through the fine groove inclined toward the yarn running direction, the sliding contact between the oil accumulated in the fine groove and the yarn Y becomes a sliding resistance, and the yarn Y is It can be naturally guided to the groove bottom side of the yarn path groove, which is an inclined direction. Therefore, even when the traveling position of the yarn Y is shifted to the left and right and travels away from the groove bottom where the oil flows down, the yarn Y is naturally guided to the groove bottom side and the oil supply hole It becomes easier to stabilize at the center of the groove bottom. Therefore, the groove bottom of the yarn path groove is always moistened with oil, oil can be stably applied from the sliding surface to the yarn, and damage to the yarn is reduced.

  Further, since the fine groove guides and collects the oil to the groove bottom of the yarn path groove, the scattering of the oil is reduced, so that the amount of oil supply can be set in advance and the cost can be reduced.

  And since the scattering of the oil which was not provided reduces, the contamination of the atmosphere of a fiber manufacturing apparatus can be suppressed and the working environment can be improved.

  Furthermore, by forming the fine groove in a V shape centering on the groove bottom of the yarn path groove, the yarn path groove can be used against a drift phenomenon in which oil flows down to the right or left side of the yarn path groove. The oil can be guided and collected to the groove bottom of the V-groove-shaped yarn path groove through the fine groove inclined toward the yarn running direction on the sliding surface of the thread, so that the groove bottom of the thread path groove is always moistened with oil. Thus, oil can be stably applied from the sliding surface to the yarn Y, and damage to the yarn Y is reduced.

  Embodiments of the present invention will be described below.

  FIGS. 1A, 1B and 1C show the oiling nozzle of the present invention. 1 (a) is a perspective view of an oiling nozzle, FIG. 1 (b) is a perspective view of a section cut at the center of the oiling nozzle, and FIG. 1 (c) is an oiling viewed from above the yarn path groove (direction A). It is a front view of a nozzle.

  The oiling nozzle 1 of the present invention includes a V-groove-shaped yarn path groove 2 that guides the yarn Y and an oil supply hole 7 that is opened in the groove bottom 3 of the yarn path groove 2, and discharges oil from the oil supply hole 7. An oiling nozzle that moistens the sliding surface 4 of the yarn path groove 2 and slides the running yarn Y on the sliding surface 4 of the yarn path groove 2 to apply oil to the yarn Y. Are formed on the sliding surface 4 in a slanted manner in the direction of yarn travel.

  As the yarn used here, a single yarn obtained by eluting synthetic fibers made of polyamide, polyester, nylon, or the like from each nozzle elution hole of a spinning nozzle is converged into one yarn. As the oil, a smooth water emulsion type oil is used.

  FIG. 2 shows the oiling nozzle fine groove pattern of the present invention shown in FIG. By forming a plurality of fine grooves 5 in this way, the effect of guiding and collecting oil can be enhanced. In order to prevent a drift phenomenon in which oil flows down to the right or left side of the yarn path groove 2, the fine grooves 5 are preferably formed on both the left and right sides of the yarn path groove 2.

  Further, since the fine groove 5 guides and collects oil to the groove bottom 3 of the yarn path groove 2, the oil scattering is reduced, so that the oil supply amount can be set to be small in advance and waste is prevented.

  Furthermore, since the scattering of the oil that has not been applied is reduced, contamination of the atmosphere of the fiber manufacturing apparatus can be suppressed and the working environment can be improved.

  The fine grooves 5 are preferably formed with an inclination of 10 ° to 60 ° with respect to the yarn running direction. When this inclination angle (θ) is smaller than 10 °, the fine groove 5 itself obstructs the running of the yarn Y because it is nearly parallel to the fine groove 5 and the running direction of the yarn. Resistance increases. When the inclination angle (θ) is larger than 60 °, the oil induction and recovery effect by the fine groove 5 described above is reduced, and it is difficult to effectively lubricate the bottom surface 3 of the yarn path groove 2. In the figure, a plurality of fine grooves 5 are shown as parallel fine groove patterns. If the inclination angle (θ) is in the range of 10 ° to 60 °, the inclination angle (θ) of each fine groove 5 is It does not have to be parallel.

  FIG. 3 shows a fine groove pattern of another embodiment of the oiling nozzle according to the present invention. The fine groove 15 of the oiling nozzle 11 is formed in a V shape centering on the groove bottom 13 of the yarn path groove 12, and the tip of the V-shaped fine groove 15 is formed in an R shape. By forming the fine groove 15 in a V shape with the groove bottom 13 of the yarn path groove 12 as the center, the yarn path also against a drift phenomenon in which oil flows down to the right or left side surface of the yarn path groove 12. Oil can be guided and collected to the groove bottom 13 of the V-groove-shaped yarn path groove 12 through the fine groove 15 inclined toward the yarn running direction on the sliding surface 14 of the groove 12. The groove bottom 13 is always moistened with oil, oil can be stably applied from the sliding surface 14 to the yarn Y, and damage to the yarn Y is reduced.

  Furthermore, by forming the tip of the V-shaped fine groove 15 in an R shape on the groove bottom 13, the fine groove 15 near the groove bottom 13 serves as an oil reservoir, and the yarn contact length with the yarn Y is shortened. Therefore, the frictional resistance due to running is reduced, and damage to the yarn Y can be reduced.

  FIG. 4 is a schematic view of an enlarged cross section of the sliding surface 4 of the yarn path groove 2 of the oiling nozzle 1 and the fine groove 5 formed in the yarn path groove 2. As shown in FIG. 4, the oil ring formed so that the groove width (W) of the fine groove 5 is in the range of 0.05 to 0.3 mm and the groove depth (D) is in the range of 0.01 to 0.2 mm. It is preferable to use a nozzle. In order for the fine groove 5 to function as an oil reservoir for retaining oil in the concave groove, the fine groove 5 is required to have an appropriate size, and the concave groove width (W) of the fine groove 5 is set to be small. When the groove depth is smaller than 0.05 mm or the groove depth (D) is shallower than 0.01 mm, the oil hardly flows along the groove of the fine groove 5. When the groove width (W) of the fine groove 5 is greater than 0.3 mm or the groove depth (D) is deeper than 0.2 mm, the role of the fine groove 5 as an oil reservoir is sufficient. However, there is a possibility that the abrasion powder of the yarn due to rubbing between the yarn Y and the sliding surface 4 accumulates in the concave groove of the fine groove 5. And in the case of forming a plurality of fine grooves 5, if a plurality of convex widths (P) between the fine grooves are formed in the range of 0.1 to 1.0 mm, oil can be stably applied, More preferred.

  Further, the surface roughness of the sliding surface 4 of the yarn path groove 2 is in the range of centerline average roughness / Ra 0.1 to 1.0 (μm), and the edge 6 of the fine groove 5 has an R size of 0.3 or more. By using the oiling nozzle formed so as to have a minute R shape, damage to the yarn Y due to sliding contact can be reduced.

  In order to make the edge 6 have a minute R shape, the yarn path groove of the oiling nozzle is formed by heat treatment at a temperature of 1000 ° C. or higher. Thereby, sliding resistance with the yarn Y can be significantly reduced, and damage to the yarn Y can be eliminated.

  Note that at least the sliding surface 4 of the yarn path groove 2 may be formed using a high-hardness ceramic material or superhard material having a Vickers hardness (Hv) of 8 GPa or more. By using a material having high hardness, wear of the sliding surface due to sliding contact with the yarn Y can be reduced, and the replacement life of the oiling nozzle can be extended. It is particularly preferable to use alumina ceramics having an average crystal grain size of 10 μm or less and a purity of 99% or more. Alumina ceramics with a purity of 99% or higher is a material having a Vickers hardness (Hv) of 15 GPa or higher and a relatively low hardness. And the shape of the fine groove | channel 5 can be stabilized by making the average crystal grain diameter into 10 micrometers or less.

  According to the oiling nozzle having the above configuration, the oil discharged from the oil supply hole 7 is accumulated in the fine groove 5, and the oil applied to the yarn Y and the suction effect in the running direction of the V-groove-shaped yarn path groove 2. The oil can be guided and collected to the groove bottom 3. Therefore, the groove bottom 3 of the yarn path groove 2 is always moistened with oil, oil can be stably applied from the sliding surface 4 to the yarn Y, and damage to the yarn Y is reduced.

  In addition, when the yarn Y passes through the fine groove inclined toward the yarn running direction, the sliding contact between the oil accumulated in the fine groove 5 and the yarn Y becomes a sliding resistance, and the yarn Y is made into the fine groove. The groove bottom 3 where the oil supply hole 7 is located even when the running position of the yarn Y is shifted to the left or right by the action of naturally guiding to the groove bottom side of the yarn path groove 2 which is the inclination direction of 5. It becomes easier to stabilize in the center.

  As an oiling nozzle manufacturing method of the present invention, for example, in the case of manufacturing with alumina, an alumina raw material powder having a purity of 99% or more is used, and after firing a molded body processed into a predetermined shape of the oiling nozzle, The sliding surface 4 is produced with a smooth finish.

Further, the fine groove 5 can be formed by a fine processing method such as press working, etching, or laser processing. There are various laser processing methods such as excimer laser, YAG laser, and CO ₂ laser. In order to efficiently form the fine groove 5 in the present invention in a high hardness material, it is preferable to use a YAG laser.

  In order to form the fine groove 5 by the YAG laser, it is necessary to control the laser processing conditions. In particular, since minute projections due to the welded material may be generated at the edge 6 of the fine groove 5 due to the frequency of the irradiation laser, it is important to set the frequency to 10 kHz or less for laser processing.

  Next, a fiber manufacturing apparatus using the oiling nozzle of the present invention will be described with reference to FIG. The fiber production apparatus 40 has a nozzle nozzle 41 that elutes the yarn shape, supplies oil to the yarn Y using the oiling nozzle 42 shown in FIG. Y is stretched by the feed rollers 43 and 44, and the yarn Y is wound up by the winding portion 45 to produce the fiber.

  Examples of the present invention will be described below.

  The oiling nozzle shown in FIG. 1 was manufactured. The sliding surface 4 of the yarn path groove 2 is made of alumina ceramics having an average crystal grain size of 4 μm and a purity of 99.5%, and the yarn of the fine groove 5 described with reference to FIGS. The angle of inclination with respect to the strip running direction (θ), the groove width (W) of the fine groove 5, the groove depth (D), the convex width (P) between the fine grooves, and the surface roughness of the sliding surface 4 Various samples with

  On the other hand, as a comparative example, the conventional oiling nozzle 21 made of the same material and without the fine grooves 5 and the fine grooves whose inclination angle (θ) with respect to the yarn running direction of the fine grooves 5 is 90 ° or more are suitable for the yarn running direction. I made a sample that was not.

  Using these oiling nozzles, polyester yarn of 235 denier 48 filaments was produced.

  That is, after the polyester yarn eluted from the nozzle 41 shown in FIG. 4 is cooled and solidified, oil is applied by the oiling nozzle 42 to condense the yarn Y, and the yarns are sequentially stretched by the feed rollers 43 and 44, and 3500 m. Winding was started to the winding part 45 at / min. In the experiment, continuous operation was performed for 1 hour, and the occurrence frequency of oil drift in the oiling nozzle and the number of yarn breaks were investigated. In addition, an oil application rate (OPU: oil pickup value) to the obtained yarn Y was also evaluated, and the results are shown in Table 1.

OPU indicates the amount of oil attached, and is a value obtained by examining the oil adhesion rate from the ratio between the weight of the yarn with the oil attached and the weight after deoiling.

  As shown in Table 1, it was found that the oiling nozzle of the present invention has a low occurrence frequency of the oil drift phenomenon and the number of yarn breakage, and the oil application rate to the yarn is higher than that of the conventional oiling nozzle. On the other hand, the oiling nozzles of Comparative Examples 1, 10, and 11 have an oil drift phenomenon frequency of 50% or more, and the oil application rate (OPU) to the yarn is 1% or less, and the oil application is insufficient. Met.

The oiling nozzle of this invention is shown, (a) is the perspective view of an oiling nozzle, (b) is the perspective view which cut the cross section in the center of an oiling nozzle, (c) is a yarn path groove seen from right above (A direction). It is a front view of the oiling nozzle. It is a figure which shows the oiling nozzle fine groove pattern of this invention. It is a figure which shows another form of the oiling nozzle fine groove pattern of this invention. It is a figure which shows the schematic diagram of the oiling nozzle fine groove | channel of this invention in an expanded cross section. It is a figure which shows the outline | summary of the fiber manufacturing apparatus using an oiling nozzle. It is a figure which shows the conventional oiling nozzle. It is a figure which shows the oiling nozzle provided with the conventional oil sump.

Explanation of symbols

1: Oiling nozzle 2: Yarn path groove 3: Groove bottom 4: Sliding surface 5: Fine groove 6: Edge 7: Oil supply hole Y: Yarn

Claims (5)

  An oil ring nozzle that applies oil to the yarn while being in sliding contact with the traveling yarn,
  A V-groove-shaped yarn path groove that is in sliding contact with the yarn and guides the yarn, and an oil supply hole that opens at the groove bottom of the yarn path groove,
  The oil supply hole is inclined so as to approach one side along the length direction of the yarn path groove as it approaches the opening,
  A plurality of fine grooves that are inclined to approach the other side along the length direction of the yarn path groove as it approaches the groove bottom are formed on the side surface of the V groove of the yarn path groove,
  The oil ring nozzle, wherein the fine groove is provided on the one side with respect to the opening and on the downstream side with respect to the opening.   2. The oiling nozzle according to claim 1, wherein the fine groove is inclined by 10 ° to 60 ° with respect to the yarn traveling direction.   3. The oiling nozzle according to claim 1, wherein the fine groove has a groove width of 0.05 to 0.3 mm and a groove depth of 0.01 to 0.2 mm. The manufacturing method of the oiling nozzle characterized by forming the fine groove | channel provided in the oiling nozzle in any one of Claims 1-3 by laser processing. A spinning nozzle for eluting the yarn is provided, and the eluted yarn is given oil to the yarn using the oiling nozzle according to any one of claims 1 to 4, and the yarn with oil is provided. A fiber manufacturing apparatus in which fibers are manufactured by drawing by a feed roller and winding by a winding unit.

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