JP7186006B2 - Lubrication guide and spinning take-up device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lubricating guide for applying oil to a yarn spun from a spinning device, and a spinning take-up device equipped with the lubricating guide.

The lubricating guide described in Patent Document 1 is a lubricating guide that applies oil to yarn spun from a spinning device. The lubricating guide of Patent Document 1 has a discharge port for discharging oil and a contact surface with which the thread contacts. Also, the contact surface has a first curved surface on which the discharge port is formed and a second curved surface located below the first curved surface. The thread begins to contact the contact surface at the peripheral edge of the outlet and leaves the contact surface at a predetermined position on the second curved surface by traveling tangentially at that position.

Japanese Patent Application Laid-Open No. 2016-216838

Here, in the fuel supply guide of Patent Document 1, the upper end of the discharge port may protrude further forward than the lower end due to manufacturing errors or the like. In this case, the thread begins to contact the contact surface in the vicinity of the upper end of the discharge port, creating a gap between the thread and the second curved surface. The oil discharged from the discharge port is accumulated in the gap, and the oil accumulated in the gap is applied to the yarn. At this time, if the viscosity of the oil is low, the oil tends to flow down through the gap, and the amount of oil in the gap tends to fluctuate over time. As a result, there is a risk that the oil agent may adhere unevenly (uneven adhesion) to the yarn.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an oil supply guide and a spinning take-up device equipped with the oil supply guide that can uniformly apply an oil solution to a yarn even if the viscosity of the oil solution is low.

An oil supply guide according to a first invention is an oil supply guide that applies oil to a yarn composed of a plurality of filaments spun from a spinning device, the oil supply guide having a surface extending along a first direction, a guide body having a contact surface with which a thread is brought into contact; a discharge port formed on the surface of the guide body on one side of the contact surface in the first direction and discharging an oil agent; Disposed on the surface of the guide body so as to be positioned on both sides of the discharge port in a second direction parallel to the surface of the guide body and orthogonal to the first direction, and on the one side of the first direction. two thread guide members for guiding a plurality of filaments to the center side of the discharge port in the second direction, the thread guide members extending so that the distance between the filaments in the second direction narrows toward the other side. , the contact surface is a curved surface that is curved so as to protrude outwardly of the guide body, and when viewed from the second direction, the one-side end of the discharge port in the first direction and the The portion of the guide body on the one side of the one-side end of the discharge port in the first direction is the curved surface at the position of the other-side end of the discharge port in the first direction. The tangent line does not overlap with the tangent line, and the tangent line is set at an angle of 10° or less in a direction approaching the one-side end of the ejection port in the first direction, centering on the other-side end of the ejection port in the first direction. does not overlap any straight line tilted by

Unlike the present invention, when viewed from the second direction, one end of the discharge port in the first direction or a portion of the guide body on one side of the one end of the discharge port in the first direction Consider a case where the tangent line of the curved surface overlaps at the other end position of the ejection port in one direction. In this case, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the lubricating guide at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the surface of the guide body at a portion near one end of the outlet in the direction. Then, a gap is formed between the curved surface and the thread. Then, the oil discharged from the discharge port is accumulated in the gap, and the oil accumulated in the gap is applied to the yarn. However, when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil does not remain in the gap for a long time and tends to flow down. There is a possibility that the adhesion of the adhesive (adhesion unevenness) may occur.

In the present invention, when viewed from the second direction, the end on one side of the ejection port in the first direction and the portion of the guide body on one side of the end on the one side of the ejection port in the first direction are: It does not overlap the tangent line of the curved surface at the position of the other end of the ejection port in the first direction. Therefore, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the guide body at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the curved surface at a portion near the end on the other side of the outlet in the direction. As a result, there is no gap between the curved surface and the thread in which the oil is accumulated, or if a gap is formed, it is minimized. As a result, even if the viscosity of the oil is low, the oil can be uniformly applied to the yarn.

Further, in the present invention, since the contact surface is a curved surface, the yarn in contact with the curved surface runs in the tangential direction at the portion on the other side of the other end of the discharge port, and is curved. away from the surface. Therefore, when the thread is separated from the curved surface, the oil is not scraped off at the corners. This makes it possible to appropriately control the amount of oil applied to the thread.

The lubricating guide may be arranged such that the tangent to the contact surface at the other end of the discharge port in the first direction is slightly inclined with respect to the running direction of the yarn. In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the above-described The tangential line does not overlap with a straight line inclined by 10 degrees in a direction approaching one end of the ejection port in the first direction with the other end of the ejection port in the first direction as the center. As a result, even if the lubricating guide is arranged such that the tangent line is inclined in the range of 10° or less with respect to the running direction of the yarn, the yarn is curved in the vicinity of the end on the other side of the discharge port in the first direction. It begins to come into contact with the surface, and there is no gap between the curved surface and the thread for oil to accumulate, or if a gap is formed, it is very small.

A lubricating guide according to a second invention is a lubricating guide for applying oil to a yarn composed of a plurality of filaments spun from a spinning device, the lubricating guide having a surface extending along a first direction, a guide body having a contact surface with which a thread is brought into contact; a discharge port formed in a portion of the surface of the guide body on one side of the contact surface in the first direction for discharging oil; In a second direction that is parallel to the surface of the guide body and orthogonal to the first direction, the nozzles are arranged on the surface of the guide body so as to be positioned on both sides of the discharge port, and are arranged from one side of the first direction to the other. two thread guide members for guiding a plurality of filaments to the center side of the discharge port in the second direction, the thread guide members extending so that the distance between them in the second direction becomes narrower toward the side; The contact surface has a flat surface forming the other end of the ejection port in the first direction, the one end of the ejection port in the first direction when viewed from the second direction, and , the portion of the guide body on the one side of the one-side end of the discharge port in the first direction does not overlap with a first extension surface extending the plane, and does not overlap the first extension surface. , any second extension inclined at an angle of 10° or less in a direction approaching the one-side end of the discharge port in the first direction, centering on the other end of the discharge port in the first direction. face does not overlap.

Unlike the present invention, when viewed from the second direction, one end of the discharge port in the first direction or a portion of the guide body on one side of the one end of the discharge port in the first direction Consider the case where it overlaps with the 1 extension plane. In this case, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the lubricating guide at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the surface of the guide body at a portion near one end of the outlet in the direction. A gap is then formed between the plane and the thread. Then, the oil discharged from the discharge port is accumulated in the gap, and the oil accumulated in the gap is applied to the yarn. However, when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil does not remain in the gap for a long time and tends to flow down. There is a possibility that the adhesion of the adhesive (adhesion unevenness) may occur.

In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the first 1 Do not overlap with the extension plane. Therefore, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the guide body at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the plane at a portion near the end on the other side of the outlet in the direction. As a result, there is no gap between the flat surface and the thread in which the oil is accumulated, or the gap, if any, is small. As a result, even if the viscosity of the oil is low, the oil can be uniformly applied to the yarn.

The lubricating guide may be arranged such that the plane is slightly inclined with respect to the running direction of the yarn. In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the first 2 extension planes do not overlap. As a result, even if the lubricating guide is arranged such that the plane is inclined in the range of 10° or less with respect to the running direction of the yarn, the yarn is It begins to come into contact with the flat surface, and there is no gap between the flat surface and the thread for the oil to accumulate, or if a gap is formed, it becomes very small.

A fuel supply guide according to a third aspect is the fuel supply guide according to the second aspect, wherein the contact surface is connected to the other end of the plane in the first direction and projects outward from the guide body. It has a curved surface that is curved to be.

In the present invention, the contact surface is connected to the other end of the plane in the first direction and has a curved surface that is curved to project outward from the guide body. , the oil solution is not scraped off at the corners when moving away from the other end of the plane in the first direction. This makes it possible to appropriately control the amount of oil applied to the thread.

A spinning take-up device according to a fourth aspect of the invention is a spinning take-up device for taking a yarn composed of a plurality of filaments spun from a spinning device, the yarn traveling from one side to the other side in a first direction. a guide body having a surface extending along the first direction; and a guide body formed on the surface of the guide body and discharging an oil having a viscosity of 50 cSt or less. wherein the yarn begins to contact the surface at the periphery of the discharge port, and the surface of the guide body is located on the other side of the discharge port in the first direction. The contact surface is a curved surface that is curved so as to be convex to the outside of the guide body, parallel to the surface of the guide body and orthogonal to the first direction When viewed from the second direction, the one side end of the ejection port in the first direction, and the one side of the guide body relative to the one side end of the ejection port in the first direction does not overlap with the tangent line of the curved surface at the position of the other end of the discharge port in the first direction, and the oil supply guide, when viewed from the second direction, is the tangent line of the It is arranged so that the angle formed by the running direction of the yarn immediately before contacting the surface is 10° or less, and the one end of the discharge port in the first direction and the guide body are aligned in the first direction. , the portion on the one side of the one-side end of the ejection port is the tangential line of the ejection port in the first direction, centered on the other-side end of the ejection port in the first direction. It does not overlap with any straight line inclined in the range of 10° or less toward the one end.

Unlike the present invention, when viewed from the second direction, one end of the discharge port in the first direction or a portion of the guide body on one side of the one end of the discharge port in the first direction Consider a case where the tangent line of the curved surface overlaps at the other end position of the ejection port in one direction. In this case, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the lubricating guide at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the surface of the guide body at a portion near one end of the outlet in the direction. Then, a gap is formed between the curved surface and the thread. Then, the oil discharged from the discharge port is accumulated in the gap, and the oil accumulated in the gap is applied to the yarn. However, when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil does not remain in the gap for a long time and tends to flow down. There is a possibility that the adhesion of the adhesive (adhesion unevenness) may occur.

In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the first It does not overlap the tangent line of the curved surface at the position of the other end of the outlet in one direction. Therefore, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the guide body at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the curved surface at a portion near the end on the other side of the outlet in the direction. As a result, there is no gap between the curved surface and the thread in which the oil is accumulated, or if a gap is formed, it is minimized. As a result, even when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil can be uniformly applied to the yarn.

Further, in the present invention, since the contact surface is a curved surface, the yarn in contact with the curved surface runs in the tangential direction at the portion on the other side of the other end of the discharge port, and is curved. away from the surface. Therefore, when the thread is separated from the curved surface, the oil is not scraped off at the corners. This makes it possible to appropriately control the amount of oil applied to the thread.

The lubricating guide may be arranged such that the tangent to the contact surface at the other end of the discharge port in the first direction is slightly inclined with respect to the running direction of the yarn. In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the above-described The tangential line does not overlap with a straight line inclined by 10 degrees in a direction approaching one end of the ejection port in the first direction with the other end of the ejection port in the first direction as the center. As a result, even if the lubricating guide is arranged such that the tangent line is inclined in the range of 10° or less with respect to the running direction of the yarn, the yarn is curved in the vicinity of the end on the other side of the discharge port in the first direction. When it starts to come into contact with the surface, there is no gap for the oil to accumulate as described above, or if a gap is formed, it is very small.

A spinning take-up device according to a fifth aspect of the invention is a spinning take-up device for taking a yarn composed of a plurality of filaments spun from a spinning device, the yarn traveling from one side to the other side in a first direction. a guide body having a surface extending along the first direction; and a guide body formed on the surface of the guide body and discharging an oil having a viscosity of 50 cSt or less. wherein the thread begins to contact the surface at the periphery of the discharge port, and the surface of the guide body is located on the other side of the discharge port in the first direction. a contact surface for contacting a thread, the contact surface having a plane forming the other end of the discharge port in the first direction, parallel to the surface of the guide body, and When viewed from a second direction orthogonal to the first direction, the end of the one side of the ejection port in the first direction and the one side of the ejection port of the guide body in the first direction The portion on the one side of the end does not overlap with the first extended surface extending the plane, and the oil supply guide is located immediately before contacting the surface of the first extended surface when viewed from the second direction. is arranged so that the angle formed with the running direction of the yarn is 10° or less, and the one end of the discharge port in the first direction and the discharge port in the first direction of the guide body The portion on the one side of the one-side end of the outlet extends the first extension surface around the other-side end of the outlet in the first direction. It does not overlap with any second extension surface inclined at an angle of 10° or less toward one end.

Unlike the present invention, when viewed from the second direction, one end of the discharge port in the first direction, or a portion of the guide body on one side of the one end of the discharge port in the first direction, Consider the case of overlapping with the first extension plane. In this case, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the lubricating guide at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the surface of the guide body at a portion near one end of the outlet in the direction. A gap is then formed between the contact surface and the thread. Then, the oil discharged from the discharge port is accumulated in the gap, and the oil accumulated in the gap is applied to the yarn. However, when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil does not remain in the gap for a long time and tends to flow down. There is a possibility that the adhesion of the adhesive (adhesion unevenness) may occur.

In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the first 1 Do not overlap with the extension plane. Therefore, when the lubricating guide is arranged so that the thread runs from one side to the other side in the first direction and the thread begins to come into contact with the surface of the guide body at the peripheral edge of the discharge port, the thread moves in the first direction. It begins to contact the plane at a portion near the end on the other side of the outlet in the direction. As a result, there is no gap between the flat surface and the thread in which the oil is accumulated, or the gap, if any, is small. As a result, even when the viscosity of the oil is low and the amount of oil discharged per unit time is small, the oil can be uniformly applied to the yarn.

The lubricating guide may be arranged such that the plane is slightly inclined with respect to the running direction of the yarn. In the present invention, when viewed from the second direction, one end of the discharge port in the first direction and a portion of the guide body on one side of the one end of the discharge port in the first direction are the first 2 extension planes do not overlap. As a result, even if the lubricating guide is arranged such that the plane is inclined in the range of 10° or less with respect to the running direction of the yarn, the yarn is It begins to come into contact with the flat surface, and there is no gap between the flat surface and the thread for oil to accumulate, or if a gap is formed, it is very small.

A spinning take-up device according to a sixth aspect is the spinning take-up device according to the fifth aspect, wherein the lubricating guide is connected to the other end of the plane in the first direction and extends outside the guide body. It has a curved surface that is curved to be convex.

In the present invention, the contact surface is connected to the other end of the plane in the first direction and has a curved surface that is curved to project outward from the guide body. , the oil solution is not scraped off at the corners when moving away from the other end of the plane in the first direction. This makes it possible to appropriately control the amount of oil applied to the thread.

A spinning take-up apparatus according to a seventh invention is the spinning take-up apparatus according to any one of the fourth to sixth inventions, wherein the lubricating guide discharges an oil having a concentration of 85% or more from the discharge port.

Both when the concentration of the oil is low and when it is high, the viscosity of the oil becomes low. However, since the amount of oil required to be applied to the yarn does not change, when the concentration of the oil is high, compared to when the concentration of the oil is low, in order to apply a predetermined amount of oil to the yarn, The amount of oil discharged from the discharge port per unit time is small. Therefore, when the concentration of the oil is high, the amount of the oil accumulated in the gap tends to fluctuate. Therefore, when the concentration of the oil is 85% or more, the one end of the discharge port in the first direction and the portion of the guide body on one side of the one end of the discharge port in the first direction However, the tangential line and the first extension surface are not overlapped so that there is no gap between the contact surface (curved surface or flat surface) and the thread for oil to accumulate, or the gap is made small. Significance is great.

According to the present invention, even if the viscosity of the oil is low, the oil can be uniformly applied to the yarn.

FIG. 3 is a schematic diagram of a spinning take-off device equipped with a lubrication guide; It is a front view of a refueling guide. 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG. FIG. 3 is a diagram showing the relationship between oil concentration and oil viscosity; FIG. 4 is a view corresponding to FIG. 3 of the fuel supply guide in which the upper end of the discharge port is positioned further forward; (a) is a diagram showing U% in Comparative Examples 1 to 3, (b) is a diagram showing U% in Examples 1 to 3, and (c) is the concentration and viscosity of the oil agent used for measurement. It is a figure which shows. FIG. 4 is a cross-sectional view corresponding to FIG. 3 of a fuel supply guide in a modified example;

Preferred embodiments of the present invention are described below.

(Spinning take-up device)
As shown in FIG. 1, the take-up device 1 takes up synthetic fiber yarns Y composed of a plurality of filaments F spun from a spinning device 2, and winds them around bobbins B to form a plurality of packages P. . In the following description, the up-down direction, the front-rear direction, and the left-right direction shown in FIG. Description will be made by defining it as the left-right direction of the take-up device 1 (the "second direction" of the present invention).

The spinning take-up device 1 includes a cooling section 3, an oiling section 4, a drawing section 5, take-up rollers 6 and 7, an interlacing 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) consisting of a gear pump or the like is extruded downward from a plurality of spinnerets 2a arranged in the left-right direction (the depth direction of the paper surface of FIG. 1). A plurality of yarns Y made of filaments F are spun in a state of being aligned in the left-right direction.

A plurality of yarns Y spun from a plurality of spinnerets 2a of the spinning device 2 are aligned in the horizontal direction and pass through a cooling section 3, an oil supply section 4, a drawing section 5, a take-up roller 6, an interlacing device 8, and a take-up roller 7. Run along the thread path. Further, the plurality of yarns Y are distributed in the front-rear direction from the take-up roller 7 and then wound onto the plurality of bobbins B in the winding device 9 .

The cooling unit 3 has a plurality of cylindrical cooling cylinders 10 , and each cooling cylinder 10 is arranged below a plurality of spinnerets 2 a provided in the spinning device 2 . A plurality of yarns Y spun from the spinneret 2a of the spinning device 2 run through the inner space 10a of each cooling cylinder 10 from above to below along the axial direction of the cooling cylinder 10 . A straightening section 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 straightened by the straightening section 10b. Mainly, the rectifying portion 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. As shown in FIG.

The oil supply unit 4 has a plurality of oil supply guides 11 arranged below each cooling cylinder 10 . The lubricating guide 11 collects the plurality of filaments F spun from the spinneret 2a into a single yarn Y, and applies oil to the yarn Y (the plurality of filaments F). The fuel supply guide 11 will be described later in detail.

The extending portion 5 is arranged below the refueling portion 4 . The extension section 5 has a heat insulation box 12 and a plurality of heating rollers (not shown) accommodated in the heat insulation box 12 . The drawing section 5 heats and draws the plurality of yarns Y using a plurality of heating rollers.

A plurality of yarns Y stretched by the stretching section 5 are sent to a winding device 9 by take-up rollers 6 and 7 . The entangling device 8 is arranged between the take-up roller 6 and the take-up roller 7, and entangles a plurality of filaments F constituting one yarn Y to give entanglement.

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 yarns Y fed from the take-up roller 7 onto the bobbins B, thereby forming the packages P. As shown in FIG.

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

The support frame 16 is a long frame-shaped member extending in the front-rear direction. This support frame 16 is fixed to the machine base 13 . A roller support member 19 that is long in the front-rear direction is attached to the lower portion of the support frame 16 so as to be vertically movable 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 in the process of being formed and applies a predetermined contact pressure 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 motors (not shown) to reciprocate in the front-rear direction. By reciprocating the traverse guide 18a with the yarn Y suspended thereon, the yarn Y is wound on the corresponding bobbin B while being traversed back and forth about the fulcrum guide 18b.

(Refueling guide)
As described above, the lubricating guide 11 applies oil to the yarn Y made up of a large number of filaments F spun from the spinning device 2 . The oil supply guide 11 is made of a ceramic material such as alumina or zirconia, and has a guide body 20 as shown in FIGS. The guide body 20 has a front surface 21 extending in the vertical direction. A yarn Y (a plurality of filaments F) sent from the cooling unit 3 and traveling downward (from one side to the other side in the first direction) comes into contact with the surface 21 .

Further, the guide body 20 has an oil agent flow path 22 . The oil flow path 22 is formed inside the oil supply guide 11 and extends in the front-rear direction. The front end of the oil flow path 22 is a discharge port 25 formed on the surface 21. By discharging the oil from the discharge port 25, the oil is applied to the yarn Y (plurality of filaments F). In this embodiment, the concentration of the oil solution discharged from the discharge port 25 is approximately 85%. Here, the concentration of the oil refers to the concentration including all active ingredients such as oils and additives other than water. FIG. 4 shows the relationship between the concentration of the oil and the viscosity of the oil. As shown in FIG. 4, in general, the greater the difference between the oil content and the water content, the lower the viscosity of the oil. For example, a certain oil has a viscosity of about 45 cSt (50 cSt or less) when the concentration is about 85%. Further, for example, as described in Japanese Patent Application Laid-Open No. 7-70819, when an oil having a viscosity exceeding 50 cSt is applied to the yarn, yarn breakage occurs frequently. It is known that it is preferable to use an oil agent with a V of 50 cSt or less.

Here, the surface 21 of the guide body 20 includes an upper curved surface 26 above the upper end 25a of the discharge port 25 (end on one side in the first direction) and a lower end 25b of the discharge port 25 (on the other side in the first direction). and a lower curved surface 27 ("contact surface", "curved surface" of the present invention) below the edge of the contact surface. Both of the curved surfaces 26 and 27 are curved so as to project outward from the guide body 20 .

Further, when viewed from the left-right direction (in the cross section of FIG. 3), the upper end 25a of the ejection port 25 and the upper portion 20a of the guide body 20 above the upper end 25a of the ejection port 25 are the lower end 25b of the ejection port 25. does not overlap with the tangent line L1 of the lower curved surface 27 at the position of . Further, when viewed from the left-right direction, the upper end 25a of the ejection port 25 and the upper portion 20a of the guide body 20 are aligned with the tangent line L1 around the lower end 25b of the ejection port 25 in the clockwise direction in FIG. It also does not overlap with the straight line L2 rotated 10 degrees in the direction approaching the upper end 25a of .

Here, in the present embodiment, for example, the length K between the upper end 25a and the lower end 25b of the ejection port 25 is about 0.1 [mm] in the direction perpendicular to the tangent line L1. The upper end 25a and the lower end 25b of the outlet 25 have the positional relationship as described above.

Further, the oil supply guide 11 is arranged so that the tangent line L1 is substantially parallel to the running direction of the yarn Y (filament F) sent from the cooling unit 3 when viewed from the left and right direction.

Two thread guide members 23 are arranged on the surface 21 of the guide body 20 . The two thread guide members 23 are arranged on a portion on the right side of the ejection port 25 and a portion on the left side of the ejection port 25 on the surface 21 . That is, the two thread guide members 23 are arranged on the surface 21 so as to be positioned on both sides of the discharge port 25 in the left-right direction. In addition, the two thread guide members 23 extend obliquely with respect to the vertical direction so as to approach the central portion of the discharge port 25 in the left-right direction as they go downward. As a result, the distance between the two thread guide members 23 in the left-right direction decreases from the top to the bottom (from one side to the other side in the first direction). The plurality of filaments F sent from the cooling section 3 are guided by the two thread guide members 23 in a direction approaching the central side of the discharge port 25 in the horizontal direction while passing through the oil supply guide 11. It gradually converges and gathers to form one yarn Y.

(effect)
Here, unlike the present embodiment, consider a case where an oil supply guide 11' as shown in FIG. 5 is used to apply oil to the yarn Y. FIG. The surface 21' of the oil supply guide 11' includes an upper curved surface 26' above the upper end 25a' of the discharge port 25' and a lower curved surface 27' below the lower end 25b' of the discharge port 25'. have. Both of the curved surfaces 26' and 27' are curved so as to protrude outward from the guide body 20'. Also, when viewed from the left-right direction (in the cross section of FIG. 5), the upper portion 20a' of the guide body 20' above the upper end 25a' of the discharge port 25' is at the position of the lower end 25b' of the discharge port 25'. overlaps with the tangent line L1' of the lower curved surface 27' of .

In this case, when the yarn Y sent from the cooling unit 3 is brought into contact with the surface 21' at the peripheral edge of the discharge port 25', the yarn Y first reaches the upper curved surface 26'. , the upper end 25a' of the discharge port 25' or a portion above it. After that, the yarn Y contacts the portion A of the lower curved surface 27' below the lower end 25b' of the discharge port 25', and the portion S below the portion A of the lower curved surface 27'. ' away from the lower curved surface 27' by running in the direction of the tangent T' at that location.

In this case, a gap C is formed between the region of the lower curved surface 27' located between the lower end 25b' of the discharge port 25' and the portion A and the yarn Y, and discharge from the discharge port 25'. The applied oil accumulates in the clearance C. Then, the oil accumulated in the gap C is applied to the yarn Y. At this time, if the viscosity of the oil is low and the discharge amount of the oil discharged from the discharge port 25' per unit time is small, the oil does not remain in the gap C for a long time and tends to flow down. Therefore, the amount of oil accumulated in the gap C becomes unstable, and the amount of oil applied to the yarn Y also becomes unstable. As a result, nonuniform adhesion of the oil to the yarn Y (uneven adhesion) occurs. Here, even when the concentration of the oil is low (for example, 30% or less), the viscosity of the oil is low. However, since the required amount of oil to be applied to the yarn Y does not change, when the concentration of the oil is as high as about 85%, the amount of oil discharged from the discharge port 25' per unit time is higher than when the concentration of the oil is low. The amount of oil that is Therefore, when the concentration of the oil is high, the amount of the oil accumulated in the gap C is more likely to be unstable than when the concentration of the oil is low.

In addition, in the fuel supply guide, when the upper end of the discharge port is positioned on the tangent line of the lower curved surface at the position of the lower end of the discharge port when viewed from the left-right direction, the above problem does not occur. However, due to a slight manufacturing error, such a lubricating guide has a tangent to the lower curved surface at the lower end of the discharge port, the upper end of the discharge port, and the guide body when viewed from the left and right. There is a high possibility that the positional relationship with the upper portion above the upper end of the discharge port will be the same as that of the fuel supply guide 11'. In this case, as in the case of using the lubricating guide 11', the yarn Y may be unevenly adhered.

On the other hand, in the present embodiment, the upper end 25a of the discharge port 25 and the upper portion 20a of the guide body 20 are tangent L1 to the lower curved surface 27 at the position of the lower end 25b of the discharge port 25 when viewed from the left-right direction. does not overlap with Therefore, when the yarn Y (filament F) sent from the cooling unit 3 is brought into contact with the surface 21 at the peripheral edge of the discharge port 25, the yarn Y is transferred to the discharge port of the lower curved surface 27. 25 begins to contact the lower curved surface 27 in the vicinity of the lower end 25b and does not contact the upper curved surface 26. As shown in FIG. As a result, there is no gap between the lower curved surface 27 and the yarn Y in which the oil is accumulated, or the gap, if any, is small. Therefore, the oil discharged from the discharge port 25 is directly applied, the amount of the oil applied to the yarn Y is stabilized, and the yarn Y is less likely to be unevenly adhered.

Further, the lubricating guide 11 may be arranged in such a posture that the tangential line L1 is slightly inclined with respect to the running direction of the yarn Y sent from the cooling section 3 . On the other hand, in the present embodiment, the upper end 25a of the discharge port 25 and the upper portion 20a of the guide body 20 are aligned with the tangent line L1 around the lower end 25b of the discharge port 25 as viewed in the left-right direction. It also does not overlap the straight line L2 rotated by 10 degrees in the direction of rotation (direction approaching the upper end 25a of the discharge port 25). As a result, even when the lubricating guide 11 is arranged in such a posture that the tangent line L1 is inclined in the range of 10° or less with respect to the running direction of the yarn Y sent from the cooling unit 3, the yarn Y can Between the lower curved surface 27 and the yarn Y, there is no gap in which the oil is accumulated, or even if there is a gap, the gap is small. As a result, uneven adhesion is less likely to occur in the yarn Y.

Further, in this embodiment, the yarn Y runs in the direction of the tangential line T at that position from the portion S below the portion (lower end 25b of the discharge port 25) of the lower curved surface 27 where contact begins. By doing so, it is separated from the lower curved surface 27 . Therefore, when the yarn Y separates from the oil supply guide 11, the oil attached to the yarn Y is not scraped off at the corners. Thereby, the amount of the oil applied to the yarn Y can be appropriately controlled.

Next, examples of the present invention will be described.

In FIG. 6(a), when viewed from the left-right direction, the upper portion 20a' of the guide body 20' overlaps the tangent line L1' of the lower curved surface 27' at the position of the lower end 25b' of the discharge port 25'. 11′ is used to apply three types of oils G1, G2, and G3 to the yarn Y, and the measurement results of U% of the yarn after application of the oil are shown (Comparative Examples 1 to 3).

6B, the upper end 25a of the discharge port 25 and the upper portion 20a of the guide body 20 are tangent to the lower curved surface 27 at the position of the lower end 25b of the discharge port 25 when viewed from the left and right direction. Using the lubricating guide 11 that does not overlap with L1, the measurement results of U% of the yarn Y after application of the three types of oils G1, G2, and G3 are shown (Examples 1 to 3). 3).

Here, the U % of the yarn indicates the degree of dispersion of the diameter of the yarn after applying the oil. The diameter of the thread varies depending on the amount of applied oil, and the smaller the unevenness of the attachment of the oil to the thread, the smaller the U%. Moreover, the thread used for the measurement is a polyester thread. Further, as shown in FIG. 6(c), the oil G1 has a concentration of 85 [%] and a viscosity of 45 [cSt]. Oil agent G2 is an oil agent having a concentration of 90[%] and a viscosity of 38[cSt]. The oil G3 has a concentration of 98 [%] and a viscosity of 23 [cSt].

In addition, the U% measurement results of Comparative Examples 1 to 3 shown in FIG. It is the average value of the measurement results of U% when Further, the average value of the radius of curvature of the lower curved surface 27' of the plurality of oil supply guides 11' used for the measurements of Comparative Examples 1 to 3 is 32.6 [mm]. In addition, these oil supply guides 11' have an average value of 0.055 [mm] in the amount of deviation to the front in the front-rear direction from the lower end 25b' of the upper end 25a' of the discharge port 25'.

In addition, the U% measurement results of Examples 1 to 3 shown in FIG. It is the average value of the measurement results of U%. Further, the average value of the radius of curvature of the lower curved surface 27 of the plurality of oil supply guides 11 used in the measurements of Examples 1 to 3 is 32.7 [mm]. Further, in these oil supply guides 11, the average value of the amount of displacement of the upper end 25a of the discharge port 25 to the rear side in the front-rear direction with respect to the lower end 25b is 0.058 [mm].

Also, the ratio Q in FIG. 6(b) is the ratio of U% in each example to U% in a comparative example that was measured using the same oil as that of the example. The smaller the value of the ratio Q, the greater the effect of improving the uneven adhesion of the oil. In any of Examples 1 to 3, the value of the ratio Q is smaller than 1, and it can be seen that the non-uniformity of oil agent adhesion is smaller than in Comparative Examples 1 to 3.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of the claims.

In the above-described embodiment, the upper end 25a of the discharge port 25 and the upper portion 20a of the guide body 20 do not overlap the straight line L2 when viewed in the horizontal direction, but this is not a limitation. When viewed from the left-right direction, the upper end 25a of the discharge port 25 and the upper portion 20a of the guide body 20 may overlap the straight line L2 as long as they do not overlap the tangent line L1. Even in this case, if at least the lubricating guide is arranged so that the tangential line L1 is substantially parallel to the running direction of the filament F (yarn Y) sent from the cooling unit 3, uneven adhesion of the filament F (yarn Y) will occur. You can prevent it from slipping.

Further, in the above-described embodiment, the portion of the surface 21 of the guide body 20 located below the lower end 25b of the discharge port 25 is the lower curved surface 27, but the present invention is not limited to this. In one modification, as shown in FIG. 7, in the fuel supply guide 101, the front surface 121 of the guide body 120 is located above the upper end 125a of the discharge port 125, and the plane 126 forming the upper end of the discharge port 125 is positioned above the upper end 125a. , a flat surface 127 (“flat surface” in the present invention) positioned below the lower end 125 b of the ejection port 125 and forming the lower end of the ejection port 125 , a flat surface 128 below the flat surface 127 , and a flat surface 128 below the flat surface 128 . also has a lower plane 129 . The plane 126 is inclined with respect to the vertical direction so as to extend rearward as it goes upward. The plane 127 is substantially parallel to the vertical direction. The planes 128 and 129 are inclined with respect to the vertical direction so as to extend rearward as they go downward. In addition, the plane 129 has a larger inclination angle with respect to the vertical direction than the plane 128 . Further, the plane 127 and the plane 128 are connected by a curved surface 130 that curves outward from the guide body 120 . Further, the plane 128 and the plane 129 are connected by a curved surface 131 that curves outwardly from the guide body 120 . In addition, in this modified example, the combination of the flat surfaces 127 and 128 and the curved surface 130 corresponds to the "contact surface" of the present invention.

In this modified example, the upper end 125a of the discharge port 125 and the upper portion 120a of the guide body 120 above the upper end 125a of the discharge port 125 extend the plane 127 including the lower end 125b of the discharge port 125. 1 extension plane H1 does not overlap. Further, the upper end 125a of the discharge port 125 and the upper portion 120a of the guide body 120 tilt the first extension surface H1 about the lower end 125b of the discharge port 125 clockwise by 10° when viewed from the direction of FIG . It does not overlap with the second extension surface H2.

In this case, when the yarn Y is brought into contact with the surface 121 of the guide body 120 at the periphery of the discharge port 125, the yarn Y contacts the flat surface 127 at the portion near the lower end 125b of the discharge port 125. Initially, it never touches the plane 126 . Also, the yarn Y travels on the plane 127 , the curved surface 130 and the plane 128 in order, and then separates from the surface 121 at the connecting portion between the plane 128 and the curved surface 131 . Also in this case, since there is no gap between the flat surface 127 and the yarn Y, the oil can be applied to the yarn Y uniformly.

In addition, in this modification, since the plane 127 and the plane 128 are connected by the curved surface 130, when the yarn Y travels from the plane 127 to the plane 128 (when it leaves the lower end of the plane 127), the yarn Y Adhered oil is not scraped off at corners. In addition, since the plane 128 and the plane 129 are connected by the curved surface 131, when the yarn Y separates from the surface 121, the yarn Y separates in the tangential direction at the connection portion of the curved surface 131 with the flat surface 128. . As a result, when the thread Y separates from the lower end of the flat surface 128, the oil agent adhering to the thread Y is not scraped off at the corners. For these reasons, the amount of oil applied to the yarn Y can be appropriately controlled.

In this modified example, of the surface 121 of the guide body 120, the portion above the upper end 125a of the discharge port 125 is the plane 126, but the portion of the surface 121 above the upper end 125a of the discharge port 125 is , may be curved as in the above embodiment. Further, in the above-described embodiment, the portion of the surface 21 above the upper end 25a of the discharge port 25 may be flat as in the above modification.

Further, in the modification, the planes 127 and 128 are connected by the curved surface 130 and the planes 128 and 129 are connected by the curved surface 131, but this is not restrictive. The plane 127 and the plane 128 may be directly connected, and the connecting portion between the plane 127 and the plane 128 may be a corner. Similarly, the plane 128 and the plane 129 may be directly connected, and the connecting portion between the plane 128 and the plane 129 may be a corner.

Also, in the above-described embodiment, the concentration of the oil solution is about 85%, but the present invention is not limited to this. The concentration of oil may be even higher than 85%. Also, the fact that the concentration of the oil is 85% or more does not necessarily mean that the viscosity of the oil is 50 cSt or less. For example, the viscosity of the oil may be 50 cSt or less because the concentration of the oil is as low as 30% or less. Furthermore, even if the concentration of the oil is greater than 30% and less than 85%, the viscosity of the oil should be 50 cSt or less. Even in these cases, when the oil supply guide 11' shown in FIG.

In the above-described embodiment, the extension section including the heat insulation box and the heating roller is arranged, but the present invention is not limited to this. For example, it is possible to apply the present invention to POY production equipment that does not require heat drawing. In this case, for example, the concentration of the oil should be 15% or less and the viscosity of the oil should be 50 cSt or less.

1 Spinning take-up device 2 Spinning device 11 Oil supply guide 20 Guide body 20a Upper part 21 Surface 23 Yarn guide member 25 Discharge port 25a Upper end 25b Lower end 27 Lower curved surface 101 Oil supply guide 120 Guide main body 120a Upper part 121 Surface 125 Discharge port 125a Upper end 125b lower end 127 plane 130 curved surface L1 tangent line L2 straight line H1 first extended surface H2 second extended surface

Claims (7)

An oil supply guide for applying oil to a yarn composed of a plurality of filaments spun from a spinning device,
a guide body having a surface extending along a first direction, the surface having a contact surface for contacting the thread;
a discharge port formed on the surface of the guide body on one side in the first direction from the contact surface and discharging an oil solution;
Disposed on the surface of the guide body so as to be positioned on both sides of the discharge port in a second direction parallel to the surface of the guide body and orthogonal to the first direction, and on the one side of the first direction. two thread guide members for guiding a plurality of filaments to the center side of the discharge port in the second direction, the thread guide members extending so that the distance between the filaments in the second direction narrows toward the other side. ,
The contact surface is a curved surface that is convex outward from the guide body,
Seen from the second direction,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
does not overlap with a tangent line of the curved surface at the position of the other end of the ejection port in the first direction;
Any straight line formed by tilting the tangent line at an angle of 10° or less in a direction approaching the one-side end of the ejection port in the first direction, centering on the other-side end of the ejection port in the first direction A refueling guide characterized in that it does not overlap with both. An oil supply guide for applying oil to a yarn composed of a plurality of filaments spun from a spinning device,
a guide body having a surface extending along a first direction, the surface having a contact surface for contacting the thread;
a discharge port formed in a portion on one side of the contact surface in the first direction of the surface of the guide body for discharging an oil agent;
are arranged on the surface of the guide body so as to be positioned on both sides of the discharge port in a second direction parallel to the surface of the guide body and orthogonal to the first direction, and two thread guide members that guide a plurality of filaments to the center side of the discharge port in the second direction, the thread guide members extending so that the distance between them in the second direction becomes narrower toward the other side;
the contact surface has a flat surface forming the other end of the ejection port in the first direction;
Seen from the second direction,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
does not overlap with the first extended surface obtained by extending the plane,
The first extension surface is inclined at an angle of 10° or less in a direction approaching the one-side end of the ejection port in the first direction, centering on the other-side end of the ejection port in the first direction. A refueling guide characterized in that it does not overlap with any of the second extension surfaces. 3. The contact surface has a curved surface that is connected to the other end of the flat surface in the first direction and that curves outward from the guide body. 2. Refueling guide according to 2. A spinning take-up device for taking up a yarn composed of a plurality of filaments spun from a spinning device,
a lubricating guide that applies oil to the yarn traveling from one side to the other side in the first direction;
The refueling guide is
a guide body having a surface extending along the first direction;
a discharge port formed on the surface of the guide body for discharging an oil agent having a viscosity of 50 cSt or less,
a thread begins to contact the surface at the periphery of the outlet;
the surface of the guide body has a contact surface for contacting the yarn, which is located on the other side of the discharge port in the first direction;
The contact surface is a curved surface that is convex outward from the guide body,
Seen from a second direction parallel to the surface of the guide body and orthogonal to the first direction,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
does not overlap with a tangent line of the curved surface at the position of the other end of the ejection port in the first direction;
The refueling guide is
Seen from the second direction,
arranged so that the angle between the tangent line and the running direction of the yarn immediately before contacting the surface is 10° or less,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
Any straight line formed by tilting the tangent line at an angle of 10° or less in a direction approaching the one-side end of the ejection port in the first direction, centering on the other-side end of the ejection port in the first direction The spinning take-up device is characterized in that it does not overlap. A spinning take-up device for taking up a yarn composed of a plurality of filaments spun from a spinning device,
a lubricating guide that applies oil to the yarn traveling from one side to the other side in the first direction;
The refueling guide is
a guide body having a surface extending along the first direction;
a discharge port formed on the surface of the guide body for discharging an oil agent having a viscosity of 50 cSt or less,
a thread begins to contact the surface at the periphery of the outlet;
the surface of the guide body has a contact surface for contacting the yarn, which is located on the other side of the discharge port in the first direction;
the contact surface has a flat surface forming the other end of the ejection port in the first direction;
Seen from a second direction parallel to the surface of the guide body and orthogonal to the first direction,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
does not overlap with the first extended surface obtained by extending the plane,
The refueling guide is
Seen from the second direction,
arranged so that the first extension surface forms an angle of 10° or less with the running direction of the yarn immediately before contacting the surface,
The one-side end of the discharge port in the first direction, and the portion of the guide body on the one side of the one-side end of the discharge port in the first direction,
The first extension surface is inclined at an angle of 10° or less in a direction approaching the one-side end of the ejection port in the first direction, centering on the other-side end of the ejection port in the first direction. A spinning take-off device, characterized in that it does not overlap with any of the second extension planes. The refueling guide is
6. The spinning according to claim 5, further comprising a curved surface connected to the other end of the flat surface in the first direction and curved so as to project outward from the guide body. withdrawal device. The spinning take-up device according to any one of claims 4 to 6, wherein the oil supply guide discharges an oil having a concentration of 85% or more from the discharge port.

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