JP2016216838A - Oil supply guide and spun yarn take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the proper control of the amount of oil applied to a yarn.SOLUTION: An oil supply guide 11 applies oil to a yarn Y spun from a spinning device and includes a guide body 20 including: a passage 21 in which the yarn Y travels; a discharge opening 25 for discharging the oil toward the passage 21; and a contact surface 24 with which the yarn Y traveling in the passage 21 is brought into contact. The contact surface 24 includes: a first curved surface 24a in which the discharge opening 25 is formed; and a second curved surface 24b located downstream of the first curved surface 24a in a yarn traveling direction. The yarn Y starts to be brought into contact with the contact surface 24 in the peripheral edge part of the discharge opening 25 and, at a prescribed position S of the second curved surface 24b, travels in the direction of a tangent line T at the prescribed position S, thereby being separated from the contact surface 24.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an oil supply guide for applying an oil agent to a yarn spun from a spinning device, and a spinning take-up device including the oil supply guide.

  As an oil supply guide for applying an oil agent to a yarn spun from a spinning device, there is one disclosed in Patent Document 1, for example. In the oil supply guide of Patent Document 1, an oil agent supply hole is provided above the contact surface with which the yarn contacts, and the oil agent supplied from the oil agent supply hole flows (attaches) to the contact surface. The oil agent is imparted to the yarn by traveling in a state where the contact is made.

JP 2007-9342 A

  By the way, in the oiling guide of Patent Document 1, the yarn path is bent so as to pull the yarn against the contact surface (right side in FIG. 1 of Patent Document 1) on the downstream side of the oil running direction from the oiling guide. Yes. By doing so, the yarn is surely in contact with the contact surface, and the oil is easily applied to the yarn. However, in order to bend the yarn path, the portion where the yarn is separated from the contact surface is a corner, and the oil that adheres to the yarn is scraped off when the yarn contacts the corner. There was a problem.

  Further, if the yarn comes into contact with the contact surface before the oil is applied to the yarn, the quality of the yarn may deteriorate due to friction with the contact surface. In this regard, as in Patent Document 1, by providing the oil supply hole above the contact surface, the oil always adheres to the contact surface, and the yarn to which no oil is applied contacts the contact surface. You can avoid that. However, when the oil supply hole is provided above the contact surface, the amount of the oil agent is likely to vary in the process of flowing the oil agent from the oil supply hole to the contact surface, and it becomes difficult to uniformly apply the oil to the yarn. There was a problem.

  Therefore, the present invention provides an oil supply guide for applying an oil to a yarn spun from a spinning device, and a spinning take-up device provided with the oil supply guide, so that the amount of the oil applied to the yarn can be appropriately controlled. Objective.

  In order to achieve the above object, the present invention provides an oil supply guide for applying an oil to a yarn spun from a spinning device, a passage through which the yarn travels, and a discharge port for discharging the oil toward the passage. And a guide body that contacts the yarn traveling in the passage, wherein the contact surface includes a first curved surface in which the discharge port is formed, and a yarn that is more stringent than the first curved surface. A second curved surface located on the downstream side in the traveling direction, and the yarn starts to contact the contact surface at a peripheral edge of the discharge port, and at a predetermined position of the second curved surface. The vehicle is separated from the contact surface by traveling in a tangential direction at the predetermined position.

  According to the oil supply guide of the present invention, the yarn starts to contact the contact surface at the peripheral edge of the oil agent discharge port formed on the first curved surface. For this reason, the oil discharged from the discharge port is immediately applied to the yarn, and variation in the amount of oil applied can be reduced. Further, when the yarn is separated from the contact surface, the yarn travels in a tangential direction at a predetermined position of the second curved surface, so that the oil agent is not scraped off at the corner. As described above, according to the present invention, variation in the amount of oil applied can be reduced, and the applied oil can be prevented from being unintentionally scraped off, so the amount of oil applied to the yarn Can be controlled appropriately.

  In the present invention, it is preferable that the entire area of the contact surface extending from the first curved surface to the second curved surface is a curved surface.

  When a part of the contact surface is flat, the thread tends to float from the flat portion at the center of the flat portion, and the force to press the yarn against the contact surface becomes weak. There is a possibility that it is not given properly. However, as described above, if the entire area of the contact surface is a curved surface, it is easy to maintain a state in which the yarn is in close contact with the contact surface, and the oil agent can be favorably applied.

  Further, the present invention is a spinning take-up device provided with the above-mentioned oil supply guide, provided in an upstream side of the oil supply guide in the yarn traveling direction, and an internal space in which the yarn travels and cooling air is supplied. The oil supply guide is disposed so that the discharge port is positioned within a range of 20 mm or less in the opening direction of the discharge port from an extension line of the central axis of the cooling tube. To do.

  When the yarn is cooled using the cooling cylinder, the yarn preferably travels as much as possible on the central axis of the cooling cylinder so that the cooling air is uniformly supplied in the circumferential direction. Therefore, as described above, by positioning the discharge port within a range of 20 mm or less from the extension line of the central axis of the cooling tube to the opening direction of the discharge port, the spinning device passes through the cooling tube to the oil supply guide. The leading yarn path can be substantially along the central axis of the cooling cylinder, and the cooling of the yarn in the cooling cylinder can be performed satisfactorily.

  Here, it is preferable that an angle formed by the extension line and a tangent line at the predetermined position of the second curved surface is not less than 13 degrees and not more than 16 degrees.

  When the angle is small, the effect of pressing the yarn against the contact surface is weakened. On the other hand, if the angle is too large, the force for pressing the yarn against the contact surface becomes too strong, and the oil attached to the yarn may be scraped off. Therefore, by setting the angle to 13 degrees or more and 16 degrees or less, it is possible to maintain a state in which the yarn is appropriately pressed against the contact surface and the oil agent is favorably applied to the yarn.

  According to the present invention, variation in the amount of oil applied can be reduced, and the applied oil can be prevented from being unintentionally scraped off, so the amount of oil applied to the yarn is appropriately controlled. It becomes possible.

It is a schematic diagram of the spinning take-up apparatus provided with the oil supply guide. It is a front view of an oil supply guide. It is sectional drawing in III-III of FIG. It is a schematic diagram for demonstrating arrangement | positioning of a fueling guide.

(Spinning take-up device)
An embodiment of the present invention will be described. FIG. 1 is a schematic diagram of a spinning take-up device provided with an oil supply guide. The spinning take-up device 1 takes up the synthetic fiber yarn Y composed of a plurality of filaments F spun from the spinning device 2 and winds them around a plurality of bobbins B to form a plurality of packages P. Note that the up / down / front / rear and left / right directions shown in FIG.

  The spinning take-up device 1 includes a cooling unit 3, an oil supply unit 4, a drawing unit 5, take-up rollers 6, 7, an entanglement device 8, a winding device 9, and the like. First, in the spinning device 2, a polymer supplied from a polymer supply device (not shown) such as a gear pump is extruded downward from a plurality of bases 2a arranged in the left-right direction, and a plurality of yarns composed of a plurality of filaments F Y is spun in a state of being arranged in the depth direction of the paper surface of FIG.

  A plurality of yarns Y spun from the nozzle 2a of the spinning device 2 are arranged in the depth direction of the paper in FIG. 1 in the cooling unit 3, the oil supply unit 4, the stretching unit 5, the take-up roller 6, the entanglement device 8, The yarn travels along the roller 7. Further, the plurality of yarns Y are distributed in the front-rear direction from the take-up roller 7 and then wound around the plurality of bobbins B by the winding device 9.

  The cooling unit 3 includes a plurality of cylindrical cooling cylinders 10, and each cooling cylinder 10 is disposed below a plurality of bases 2 a provided in the spinning device 2. The plurality of yarns Y spun from the nozzle 2 a of the spinning device 2 travels downward in the internal space 10 a of each cooling cylinder 10 along the axial direction of the cooling cylinder 10. A rectification unit 10b is provided around the internal space 10a, and cooling air supplied from a compressed air supply device (not shown) flows into the internal space 10a while being rectified by the rectification unit 10b. Mainly, the rectification unit 10b rectifies the flow rate of the cooling air flowing into the internal space 10a so as to be substantially uniform in the circumferential direction of the cooling cylinder 10.

  The oil supply unit 4 includes a plurality of oil supply guides 11 disposed below the respective cooling cylinders 10. The oil supply guide 11 has a role of combining a plurality of filaments F spun from the base 2a into one yarn Y and applying an oil agent to the yarn Y (a plurality of filaments F). The oil supply guide 11 will be described in detail later.

  The extending portion 5 is disposed below the oil supply portion 4. The extending portion 5 includes a heat retaining box 12 and a plurality of heating rollers (not shown) accommodated in the heat retaining box 12. The drawing unit 5 draws the plurality of yarns Y while heating them with a plurality of heating rollers.

  The plurality of yarns Y drawn by the drawing unit 5 are sent to a winding device 9 by take-up rollers 6 and 7. In addition, between the take-up rollers 6 and 7, an entanglement device 8 that entangles a large number of filaments constituting one yarn Y to provide entanglement is disposed.

  The winding device 9 includes a machine base 13, a turret 14, two bobbin holders 15, a support frame 16, a contact roller 17, a traverse device 18, and the like. The winding device 9 rotates the bobbin holder 15 to simultaneously wind the plurality of yarns Y sent from the take-up roller 7 around the plurality of bobbins B to form a plurality of packages P.

  A disk-shaped turret 14 is attached to the machine base 13. The turret 14 is rotationally driven by a motor (not shown). Two long bobbin holders 15 are cantilevered on the turret 14 so as to extend in the front-rear direction. Each bobbin holder 15 is mounted with a plurality of cylindrical bobbins B arranged in the axial direction. As the turret 14 rotates, the two bobbin holders 15 can be switched between an upper winding position and a lower retracted position.

  The support frame 16 is a long frame-like member extending in the front-rear direction. The support frame 16 is fixedly attached to the machine base 13. A roller support member 19 that is long in the front-rear direction is attached to the lower part of the support frame 16 so as to be movable up and down with respect to the support frame 16. A contact roller 17 extending along the axial direction of the bobbin holder 15 is rotatably supported by the roller support member 19. The contact roller 17 comes into contact with the package P being formed, and a predetermined contact pressure is applied to the package P, so that the shape of the package P is adjusted.

  The traverse device 18 has a plurality of traverse guides 18a arranged in the front-rear direction. The plurality of traverse guides 18a are driven by a motor (not shown) and reciprocate in the front-rear direction. When the traverse guide 18a reciprocates in a state where the yarn Y is hooked, the yarn Y is wound around the corresponding bobbin B while traversing back and forth around the fulcrum guide 18b.

(Lubrication guide)
FIG. 2 is a front view of the fuel supply guide 11, and FIG. 3 is a cross-sectional view taken along line III-III in FIG. The oil supply guide 11 is for applying an oil agent to the yarn Y composed of a large number of filaments F spun from the spinning device 2. The oil supply guide 11 includes a guide main body 20 in which a passage 21 in which the yarn Y travels is formed, and an oil agent supply unit 30 that is integrally formed with the guide main body 20 and supplies oil to the guide main body 20. The guide main body 20 and the oil supply unit 30 are formed of a ceramic material such as alumina or zirconia.

  As shown in FIG. 2, the guide body 20 includes two side walls 22 that face each other and a connecting portion 23 that connects the bottoms of the two side walls 22. A passage 21 through which the yarn Y travels from top to bottom is formed between the two side walls 22. The two side walls 22 have an inclined surface 22 a that is inclined inward toward the bottom side (rear side), and the width of the passage 21 is narrower as it is closer to the connecting portion 23. Further, the inclined surface 22a is inclined inward as it goes downward, and the width of the passage 21 becomes narrower as it goes downward. For this reason, the plurality of filaments F guided to the oil supply guide 11 in a separated state are gradually gathered into one yarn Y in the course of traveling through the passage 21.

  A contact surface 24 with which the yarn Y traveling in the passage 21 comes into contact is formed at the center of the front surface of the connecting portion 23 in the vertical direction. As shown in FIG. 3, the contact surface 24 has a first curved surface 24a in which the discharge port 25 is formed, and a second curved surface 24b formed on the downstream side of the first curved surface 24a in the yarn traveling direction. . Each of the first curved surface 24a and the second curved surface 24b is a curved surface convex forward. In this embodiment, the 1st curved surface 24a and the 2nd curved surface 24b are formed continuously, and the whole region of the contact surface 24 from the 1st curved surface 24a to the 2nd curved surface 24b is a curved surface. .

  In the first curved surface 24 a, a discharge port 25 that opens to the passage 21 is formed over substantially the entire width direction of the passage 21. The discharge port 25 communicates with an oil supply hole 31 that is formed in the connecting portion 23 and the oil supply portion 30 and extends horizontally in the front-rear direction. The oil agent supply hole 31 is connected to an oil agent supply device (not shown), and the oil agent supplied from the oil agent supply device is discharged from the discharge port 25 toward the passage 21 via the oil agent supply hole 31.

  Here, the discharge port 25 is formed at a position where the yarn Y starts to substantially contact the contact surface 24 (first curved surface 24a). In other words, the yarn path is defined such that the yarn Y starts to contact the contact surface 24 at the peripheral edge of the discharge port 25. The yarn path is defined such that the yarn Y is separated from the contact surface 24 at the second curved surface 24b. Specifically, the yarn Y is separated from the contact surface 24 by traveling in the direction of the tangent T at the predetermined position S at the predetermined position S of the second curved surface 24b.

  FIG. 4 is a schematic diagram for explaining the arrangement of the fuel supply guide 11. The oil supply guide 11 is disposed below the cooling cylinder 10. Strictly speaking, the position of the front end portion of the contact surface 24 (the position of the discharge port 25 in this embodiment) is a cooling cylinder in order to increase the force for pressing the yarn Y against the contact surface 24 and to apply the oil properly. It is preferable that it is slightly forward from the extended line of 10 central axes A. However, if the separation distance is increased too much from the extension line of the central axis A of the cooling cylinder 10, the yarn Y traveling in the internal space 10a of the cooling cylinder 10 is greatly deviated from the central axis A, and the cooling air is blown in the circumferential direction. It becomes difficult to uniformly supply Y.

  Therefore, in the present embodiment, the discharge port 25 is in front of the extension line of the central axis A of the cooling cylinder 10, and the distance L (a plurality of bases) in the opening direction (front-rear direction) of the discharge port 25 from the extension line. It is arranged so that the distance L) from the extension line when viewed from the direction in which 2a is arranged is within a range of 20 mm or less. Note that the distance in the vertical direction between the base 2a and the discharge port 25 is about 600 to 1600 mm, so the ratio of the distance L to the distance is about 0.033 (= 20/600) or less. . In the present embodiment, the angle θ formed by the extension line of the central axis A of the cooling cylinder 10 and the tangent line T at the predetermined position S of the contact surface 24 is set to 13 degrees or more and 16 degrees or less.

(effect)
According to the oil supply guide 11 of the present embodiment, since the yarn Y starts to contact the contact surface 24 at the peripheral edge of the oil agent discharge port 25 formed on the first curved surface 24a, the oil agent discharged from the discharge port 25 is used. Is immediately applied to the yarn Y, and is not affected by the flow of the oil on the oil supply guide 11 or the fluctuation of the accumulated state, so that the variation in the applied amount of the oil can be reduced. Further, when the yarn Y moves away from the contact surface 24, the yarn Y travels in the direction of the tangent T at the predetermined position S of the second curved surface 24b, and therefore the oil agent is scraped off at the corners. Absent. Therefore, according to the oil supply guide 11 of the present embodiment, the variation in the amount of oil applied is reduced and the applied oil can be prevented from being unintentionally scraped off. It becomes possible to control the amount of oil properly

Here, in the case where the drawing unit 5 for heat-treating the yarn Y is provided as in the spinning take-up device 1 of the present embodiment, in order to improve the heating efficiency in the drawing unit 5, an oil agent having a low water content, that is, a viscosity Oil agents having high viscosity (for example, oil agents having a viscosity of about 10 mm ² / s to 200 mm ² / s) may be used. In the case of using an oil agent having a high viscosity as described above, if the oil agent supply hole is provided above the contact surface as in Patent Document 1, in the process of flowing the oil agent from the oil agent supply hole to the contact surface, Since the flow state and accumulation state of the oil agent up to the contact position of the yarn Y change every moment, the variation in the amount of the oil agent tends to be particularly large, and it is difficult to uniformly apply the oil agent. However, according to the oil supply guide 11 of the present embodiment, since the oil discharged from the discharge port 25 is immediately applied to the yarn Y, the amount of oil does not vary easily, and a more uniform oil can be applied. .

  In the present embodiment, the yarn Y (the plurality of filaments F) starts to contact the contact surface 24 because the first curved surface 24a having the wide passage 21 has a plurality of points when it contacts the contact surface 24. The filament F tends to be in a loose state, and the oil agent can be favorably applied to the filament F.

  Further, when a part of the contact surface 24 is a flat surface, the yarn Y tends to float from the flat portion at the center of the flat portion, and the force pressing the yarn Y against the contact surface becomes weak. There is a possibility that the oil agent is not properly applied from the yarn to the yarn Y. However, if the entire region of the contact surface 24 is a curved surface as in the oil supply guide 11 of the present embodiment, the state in which the yarn Y is in close contact with the contact surface 24 can be easily maintained, and the oil agent can be applied satisfactorily. .

  Further, when the yarn Y is cooled using the cooling cylinder 10, it is preferable that the yarn Y travels on the central axis A of the cooling cylinder 10 as much as possible so that the cooling air is uniformly supplied in the circumferential direction. Therefore, as in the present embodiment, by positioning the discharge port 25 within a range of 20 mm or less in the opening direction of the discharge port 25 from the extension line of the central axis A of the cooling tube 10, the cooling tube 10 is removed from the spinning device 2. The yarn path that leads to the oil supply guide 11 can be substantially along the central axis A of the cooling cylinder 10, and the yarn Y in the cooling cylinder 10 can be cooled well.

  Further, when the angle θ (see FIG. 4) formed by the extension line of the central axis A of the cooling cylinder 10 and the tangent line T at the predetermined position S of the contact surface 24 is small, the effect of pressing the yarn Y against the contact surface 24 is obtained. become weak. On the other hand, if the angle θ is too large, the force pressing the yarn Y against the contact surface 24 becomes too strong, and the oil that has adhered to the yarn Y may be scraped off. Therefore, by setting the angle θ to 13 degrees or more and 16 degrees or less, it is possible to maintain the state in which the yarn Y is appropriately pressed against the contact surface 24 and the oil agent is favorably applied to the yarn Y.

  When the curvature radius of the second curved surface 24b is as small as less than 20 mm, for example, the contact length between the yarn Y and the oil supply guide 11 when the yarn bending angle is set to an appropriate value is shortened to 4.5 mm or less, The contact length required for oil application cannot be obtained. On the other hand, if the radius of curvature is too large (over 40 mm), for example, the contact length between the yarn Y and the oiling guide 11 when an appropriate yarn bending angle is set is 11 mm or more, and the yarn contact length is more than necessary. By increasing the contact resistance, the contact resistance increases, and damage to the yarn Y due to the contact between the yarn Y and the oil supply guide 11 increases. Therefore, by setting the curvature radius of the second curved surface 24b to 20 mm or more and 40 mm or less, it is possible to apply an appropriate oil to the yarn Y, and the yarn Y is not damaged by contact with the oil supply guide 11.

[Other Embodiments]
The present invention is not limited to the above embodiment, and the elements of the above embodiment can be appropriately combined or variously modified without departing from the spirit of the present invention.

  For example, in the above embodiment, the entire contact surface 24 from the first curved surface 24a to the second curved surface 24b is a curved surface, but a flat surface exists between the first curved surface 24a and the second curved surface 24b. It doesn't matter.

  Further, in order to appropriately retain the oil agent on the contact surface 24 and to favorably apply the oil agent to the yarn Y, an uneven portion such as a groove for retaining the oil agent may be provided on the contact surface 24.

  In the present embodiment, an apparatus has been described in which a plurality of filaments F spun from a single base 2a are combined as a single yarn Y. However, a filament F spun from a single base 2a is a plurality of yarns. It is good also as a structure divided | segmented into Y. At this time, since it is necessary to install the oil supply guide 11 for each of the plurality of yarns Y, the plurality of oil supply guides 11 are installed corresponding to one base 2a.

1: Spinning take-up device 2: Spinning device 10: Cooling cylinder 10a: Internal space 11: Refueling guide 20: Guide body 21: Passage 24: Contact surface 24a: First curved surface 24b: Second curved surface 25: Discharge port Y: Thread S: Predetermined position T: Tangent A: Center axis of cooling cylinder

Claims (5)

An oil supply guide for applying an oil to a yarn spun from a spinning device,
A guide body having a passage through which the yarn travels, a discharge port that discharges the oil toward the passage, and a contact surface that contacts the yarn that travels in the passage;
The contact surface includes a first curved surface in which the discharge port is formed, and a second curved surface located downstream of the first curved surface in the yarn traveling direction,
The yarn starts to come into contact with the contact surface at a peripheral edge of the discharge port, and is separated from the contact surface by traveling in a tangential direction at the predetermined position at the predetermined position of the second curved surface. Features a lubrication guide.   The oil supply guide according to claim 1, wherein an entire area of the contact surface extending from the first curved surface to the second curved surface is a curved surface.   The oil supply guide according to claim 1 or 2, wherein a curvature radius of the second curved surface is 20 mm or more and 40 mm or less. A spinning take-up device comprising the oil supply guide according to any one of claims 1 to 3,
A cooling cylinder provided in an upstream side of the oil supply guide in the yarn traveling direction and having an internal space in which the yarn travels and cooling air is supplied;
The spinning take-up device, wherein the oil supply guide is arranged so that the discharge port is located within a range of 20 mm or less from the extended line of the central axis of the cooling cylinder in the opening direction of the discharge port.   The spinning take-up device according to claim 4, wherein an angle formed by the extension line and a tangent line at the predetermined position of the second curved surface is 13 degrees or more and 16 degrees or less.

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