Spinning production equipment

Abstract

To provide a spinning production facility that suppresses a height dimension of the spinning production facility even if the number of spinning packs increases in the spinning production facility provided with a spinning apparatus including a plurality of spinning packs.SOLUTION: A spinning production facility 1 according to the present invention comprises: a plurality of spinning packs 22 in which molten polymer is stored inside and yarns Y are spun downward from a mouthpiece 24 provided at each lower end; a spinning beam 21 into which the plurality of spinning packs 22 are inserted; a plurality of first guides 6 which are arranged below the plurality of spinning packs 22 and guide a plurality of yarns Y individually; and a second guide 7 which is arranged below the plurality of first guides 6 and converges the plurality of yarns Y guided by the plurality of first guides 6. The plurality of spinning packs 22 are arranged along a first arc 51 and a second arc 52 inside the first arc 51 in plan view.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a spinning production facility that includes a spinning device having a plurality of spinning packs, and that spins a plurality of yarns downward from a spinneret provided at the lower end of the spinning pack. [Background technology]

[0002] Spinning devices for spinning synthetic fiber yarns have been known for some time. A typical spinning device includes multiple spin packs each having a spinneret at its lower end. Molten polymer is supplied to the spin packs, and the molten polymer is spun downward through multiple nozzles in the spinneret to form a yarn consisting of multiple filaments.

[0003] For example, as shown in Patent Document 1, a spinning apparatus has been developed in which a plurality of spinning packs are arranged in two rows in a staggered manner in a plan view. Below the plurality of spinning packs, a plurality of cooling cylinders are arranged in a staggered manner to cool the spun yarns with cooling air, and below the cooling cylinders, oil supply guides are arranged in a staggered manner to apply an oil agent to the cooled yarns. The oil-applied yarns are individually guided by a plurality of first guides arranged below the oil supply guides, and converge at a predetermined interval in a second guide (comb guide) arranged directly below and approximately near the center of the plurality of first guides in the horizontal direction, and run aligned at equal intervals along the horizontal direction. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-140498 Summary of the Invention [Problem to be solved by the invention]

[0005] Here, if the angle of the yarn running between the first guide and the second guide relative to the vertical direction (hereinafter referred to as the yarn angle, see Figure 2) is large, the friction between the yarn and the first guide increases, which may degrade the quality of the yarn. For this reason, it is necessary to avoid a large yarn angle.

[0006] In recent years, there has been an increasing need for spinning devices equipped with more spin packs in order to simultaneously spin more yarns. However, in a spinning device in which spin packs are arranged in two staggered rows, as in Patent Document 1, increasing the number of spin packs results in the spin packs and the first guides arranged below the spin packs extending along the arrangement direction. As a result, the horizontal distance between the first and second guides at both ends that converge the yarns onto the second guides increases by the amount of the increase in the arrangement direction, and the yarn angle also increases. In this case, to avoid an increase in the yarn angle, it is necessary to increase the vertical distance between the first and second guides, which increases the height of the entire yarn production facility, including the spinning device.

[0007] An object of the present invention is to reduce the height of a spinning production facility equipped with a spinning device having a plurality of spinning packs, even if the number of spinning packs increases. [Means for solving the problem]

[0008] A spinning production facility according to a first aspect of the present invention comprises a plurality of spinning packs that store molten polymer inside and spin yarn downward from spinnerets provided at the lower ends of the spinning packs, a spinning beam into which the plurality of spinning packs are inserted, a plurality of first guides that are arranged below the plurality of spinning packs and that guide the plurality of yarns individually, and a second guide that is arranged below the plurality of first guides and that converges the plurality of yarns guided by the plurality of first guides, wherein the plurality of spinning packs include a first row that is arranged along a curve in a plan view and a second row that is arranged along the first row.

[0009] A second aspect of the present invention provides a spinning production facility comprising: a plurality of spinning packs that store molten polymer inside and spin yarn downward from spinnerets provided at the lower ends of the spinning packs; a spinning beam into which the plurality of spinning packs are inserted; a plurality of first guides that are arranged below the plurality of spinning packs and that guide the plurality of yarns individually; and a second guide that is arranged below the plurality of first guides and that converges the plurality of yarns guided by the plurality of first guides, wherein the plurality of spinning packs include a first row that is arranged along a curved straight line in a plan view, and a second row that is arranged along the first row.

[0010] To ensure yarn quality, it is necessary to suppress an increase in the angle of the yarn traveling between the first guide and the second guide relative to the vertical direction (yarn angle). In particular, the horizontal distance between the first guide and the second guide located at both ends is the longest. Therefore, it is necessary to increase the vertical distance between the first guide and the second guide sufficiently to suppress an increase in the yarn angle between the first guide and the second guide at both ends. According to the first and second inventions, the multiple spinning packs include a first row arranged along a curved or bent straight line in a plan view, and a second row aligned with the first row. Therefore, when the number of spinning packs is increased, the horizontal distance between the first guide and the second guide at both ends can be prevented from increasing compared to when the spinning packs are arranged in one direction, such as in a staggered arrangement. This shortens the vertical distance between the first guide and the second guide required to suppress an increase in the yarn angle, and thus the height of the spinning production equipment can be reduced even when the number of spinning packs is increased.

[0011] The spinning production equipment according to the third invention is characterized in that, in the first or second invention, the outer edge of the spinning beam is formed along the positions where the multiple spinning packs are arranged.

[0012] According to the present invention, the portion of the spinning beam where no spinning pack is disposed can be reduced, thereby realizing space saving in the entire spinning production facility.

[0013] The spinning production facility according to a fourth invention is the one according to the first invention, characterized in that all of the plurality of spinning packs are arranged along an arc.

[0014] The spinning apparatus is provided with multiple polymer pipes that supply molten polymer from a polymer tank to multiple spin packs. The polymer in the polymer pipes is heated. To ensure uniform quality of the yarns spun from the multiple spinnerets, the state of the molten polymer in each spin pack must be uniform. To achieve this, it is necessary to uniformly heat the polymer supplied to each spin pack. According to the present invention, the distance from the center of the arc to each row of spin packs arranged along the arc is uniform. This makes it easy to uniformize the lengths of the polymer pipes connected to the spin packs arranged in each row, eliminating the need for complex flow paths to uniformize the lengths of the polymer pipes. This allows for a simple configuration in which the polymer passing through the polymer pipes is uniformly heated.

[0015] Furthermore, each yarn spun from the multiple spin packs needs to be threaded onto a first guide. In the present invention, the first guides arranged below the spin packs are arranged in multiple rows along an arc, similar to the spin packs. This allows the operator to move along the first guides arranged along the arc and thread the yarn onto the first guides arranged inside the arc through the gaps between the first guides arranged outside the arc. This allows the operator to easily thread the yarn onto the first guides without being hindered by other yarns being spun below, improving operability.

[0016] The spinning production equipment according to the fifth invention is characterized in that, in the fourth invention, the spinning pack has an unplaced portion that is not placed in a part of the circumferential direction when viewed in a plane, and the unplaced portion extends from the outer edge side of the spinning beam toward the center side.

[0017] In general, in spinning production equipment, a cooling cylinder that cools the yarn with cooling air is arranged below a spinning pack, and an oil supply guide that applies an oil to the cooled yarn is arranged below the cooling cylinder. A pipe that supplies cooling air is connected to a cooling device that houses multiple cooling cylinders, and a pipe that supplies an oil is connected to the oil supply guide. These pipes can be broken or clogged, and replacement work for the pipes may be required while the yarn is being spun by the spinning pack. According to the present invention, a space from which no yarn is spun is generated below the empty portion where no spinning pack is arranged. Therefore, an operator can easily replace the pipes even while the yarn is being spun by accessing the cooling device and the oil supply guide from the space below the empty portion of the spinning pack.

[0018] The spinning production equipment according to the sixth invention is characterized in that, in the first to fifth inventions, the angle of the multiple yarns running between the first guide and the second guide with respect to the vertical direction is 9 degrees or less.

[0019] By arranging the first guide and the second guide so that the yarn angle is 9 degrees or less, the quality of the yarn can be more reliably ensured.

[0020] The spinning production facility according to a seventh invention is characterized in that, in the first to sixth inventions, the plurality of spinning packs include the first row and the second row.

[0021] According to the present invention, the operation of threading the yarn onto the first guide is easier than when there are three or more rows of spin packs. [Effects of the Invention]

[0022] According to the present invention, in a spinning production facility equipped with a spinning device having a plurality of spinning packs, even if the number of spinning packs increases, the height dimension of the spinning production facility can be reduced. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a side view of a spinning production facility according to an embodiment of the present invention. [Figure 2] 1 is a partial cross-sectional view of a spinning apparatus and a cooling apparatus according to an embodiment of the present invention. [Figure 3] FIG. 4 is a perspective view of a second guide according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 2 is a perspective view of the spinning device, the cooling device, and the storage space according to the present embodiment. [Figure 6] 10A and 10B are diagrams showing arrangements of spinning packs in modified examples, in which (a) shows a spinning pack arranged along a U-shape, (b) shows a spinning pack arranged along a U-shape, and (c) shows a spinning pack arranged along a V-shape. DETAILED DESCRIPTION OF THE INVENTION

[0024] (Overall configuration of spinning production equipment 1) A preferred embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a side view of a spinning production facility 1 according to this embodiment. Fig. 2 is a partial cross-sectional view of a spinning device 2 and a cooling device 4. In the following, the front-rear, left-right, top-bottom directions in Fig. 1 are defined as the front-rear, left-right, top-bottom directions of the spinning production facility 1.

[0025] As shown in Fig. 1, the spinning production facility 1 includes a spinning device 2 and a spinning take-up device 3. The spinning device 2 is a device that spins molten polymer downward as a yarn Y, and as shown in Fig. 2, includes a spinning beam 21 and a plurality of spinning packs 22 attached to a storage section formed below the spinning beam 21. The spinning take-up device 3 is a device that takes up the yarn Y spun from the spinning device 2, and includes a cooling device 4, an oil supply guide 5, a first guide 6, a second guide 7, godet rollers 8 and 9, and a spinning take-up device 10.

[0026] The cooling device 4 is a device that cools the yarn Y spun from the spinning pack 22 with cooling air. As shown in FIG. 2, the cooling device 4 is disposed below the spinning beam 21 and includes a plurality of cooling cylinders 41 and a cooling air supply box 42 in which the cooling cylinders 41 are housed. The cooling cylinders 41 are disposed directly below the spinning packs 22, respectively. The cooling cylinders 41 are generally cylindrical members extending in the vertical direction, and each have a yarn running space 43 formed therein, with both ends open in the vertical direction. The cooling air flowing from the internal space 44 of the cooling air supply box 42 into each yarn running space 43 is rectified in the portion of the cooling cylinder 41 that forms the side wall of the yarn running space 43. In addition, cooling air is sent to each internal space 44 of the cooling air supply box 42 from a duct (not shown) through a cooling air pipe (not shown). The cooling air pipe is disposed on the back side of the cooling device 4 in FIG. 2.

[0027] The oil supply guide 5 applies an oil to the multiple yarns Y spun downward from the multiple spin packs 22. As shown in FIG. 2, the multiple oil supply guides 5 are arranged directly below the multiple cooling cylinders 41. The oil is supplied to the oil supply guides 5 via an oil supply pipe (not shown). After the oil is applied by the oil supply guide 5, the yarn Y made up of multiple filaments is entangled or otherwise processed to become a yarn Y made up of a single multifilament.

[0028] The first guide 6 defines a yarn path so that the yarn Y is pressed appropriately against the oil supply surface of the oil supply guide 5. As shown in FIG. 2, the multiple first guides 6 are arranged directly below the multiple oil supply guides 5. As shown in FIG. 3, the second guide 7 is a comb-shaped guide in which multiple yarn running sections 71 for guiding the multiple yarns Y are formed at equal intervals in the left-right direction. The yarn running sections 71 of the second guide 7 are open at both ends in the up-down direction and either the front or rear. One second guide 7 is arranged approximately directly below the centers of the multiple first guides 6 in the left-right and front-to-rear directions. The multiple yarns Y guided by the multiple first guides 6 are guided by the multiple yarn running sections 71 in the second guide 7 and run downward while being aligned at equal intervals in the left-right direction.

[0029] The threading of the yarn Y through the oil supply guide 5, the first guide 6, and the second guide 7 may be performed manually or automatically.

[0030] 1, the godet rollers 8 and 9 are disposed downstream of the second guide 7 in the yarn running direction, and are rotationally driven by a motor (not shown). The multiple yarns Y spun from the spinning device 2 are wound around the godet rollers 8 and 9 in this order after passing through the yarn running space 43 of the cooling device 4, the oil supply guide 5, the first guide 6, and the second guide 7, and are then sent to the take-up winding device 10 by the godet rollers 8 and 9.

[0031] The take-up winding apparatus 10 winds a plurality of yarns Y onto a plurality of bobbins B held by a bobbin holder 11 to form a plurality of packages P. The take-up winding apparatus 10 is provided with two bobbin holders 11. The bobbin holder 11 is a shaft member extending in the front-rear direction, and its rear end is cantilevered by a turret 13 provided on a machine base 12. The bobbin holder 11 can hold a plurality of bobbins B lined up in the axial direction. For example, when eight yarns Y are sent from the spinning apparatus 2, the eight yarns Y are wound onto eight bobbins B.

[0032] The take-up apparatus 10 also has a support frame 14 extending in the front-rear direction substantially parallel to the bobbin holder 11. The rear end of the support frame 14 is cantilevered by the machine base 12. A guide support body 15 extending in the front-rear direction is provided on the upper part of the support frame 14. The guide support body 15 is provided with a plurality of support guides 16 aligned in the front-rear direction corresponding to the plurality of bobbins B held in the bobbin holder 11. The support frame 14 is also provided with a plurality of traverse devices 17 aligned in the front-rear direction corresponding to the plurality of bobbins B held in the bobbin holder 11. Each traverse device 17 traverses the yarn Y in the front-rear direction around the corresponding support guide 16.

[0033] The take-up winding apparatus 10 has a contact roller 18 rotatably supported by a support frame 14. The contact roller 18 is provided below the support frame 14. The operation of each part of the take-up winding apparatus 10 is controlled by a control device (not shown). The take-up winding apparatus 10 starts winding the multiple yarns Y traversed by the multiple traverse devices 17 onto multiple new bobbins B attached to the upper one of the two bobbin holders 11. During winding of the yarn Y, the contact roller 18 is raised and lowered and / or the turret 13 is rotated as appropriate to form multiple packages P while responding to an increase in the diameter of the package P.

[0034] (Spinning device 2) As described above, the spinning apparatus 2 includes the spinning beam 21 and a plurality of spinning packs 22, and further includes a polymer tank 23 containing a polymer, which is a material for the yarn Y, as shown in FIG. 2. The spinning beam 21 is capable of heating the spinning packs 22, the polymer tank 23, and the polymer piping 25 connecting the spinning packs 22 and the polymer tank 23, which are arranged therein. The spinning pack 22 stores molten polymer therein, and a spinneret 24 is formed at its lower end. The molten polymer stored inside the spinning pack 22 is spun downward as a yarn Y consisting of a plurality of filaments from a plurality of through-holes (not shown) formed in the spinneret 24. The polymer tank 23 stores a polymer therein, and the polymer in the polymer tank 23 is sent to the plurality of spinning packs 22 via the plurality of polymer piping 25. When the polymer is sent from the polymer tank 23 to the spin pack 22, the polymer inside the polymer tank 23 and the polymer pipe 25 is heated to a predetermined temperature by the spin beam 21 and becomes a molten polymer.

[0035] In a conventional spinning device, as in the above-mentioned Patent Document 1, for example, spinning packs are arranged in two staggered rows around a spinning beam that is rectangular in plan view. In such a spinning device, if the number of spinning packs 22 is increased, the spinning packs 22 are arranged to extend in the arrangement direction, i.e., the left-right direction in FIG. 2. In this case, the first guides 6 arranged directly below the spinning packs 22 are also arranged to extend in the left-right direction. This increases the horizontal distance between the first guides 6 and the second guides 7 arranged at both ends.

[0036] In the spinning take-up device 3, the multiple first guides 6 and second guides 7 are arranged so that the yarn angle θ, which is the angle of the yarn Y traveling between each first guide 6 and the yarn running portion 71 of the second guide 7 with respect to the vertical direction, is 9 degrees or less. The yarn angle θ is determined by the vertical and horizontal distances between the first guide 6 and the second guide 7. By setting the yarn angle θ to 9 degrees or less, it is possible to prevent deterioration in the quality of the yarn Y due to friction between the yarn Y and the first guide 6. As in a spinning production facility having a conventional spinning device, if the horizontal distance between the first guide 6 and the second guide 7 increases due to the increase in the number of spinning packs 22, it is necessary to increase the vertical distance between the first guide and the second guide to set θ to 9 degrees or less. In this case, there is a problem in that the height dimension of the yarn production facility 1 as a whole becomes large.

[0037] Therefore, in the spinning device 2 according to this embodiment, as shown in FIG. 4, the spinning beam 21 is circular in plan view, and the spinning packs 22 are arranged in two rows along a first arc 51 and a second arc 52 in plan view. The outer edge of the spinning beam 21 is formed so as to follow the spinning packs 22 arranged along the first arc 51. The center of the circular spinning beam 21 is the same as the arc centers of the first arc 51 and the second arc 52. Therefore, in the spinning device 2 according to this embodiment, if the number of spinning packs 22 is increased, the arc radii of the first arc 51 and the second arc 52 become larger. That is, since the spinning packs 22 are arranged extending in both the front-rear direction and the left-right direction, extension in one direction can be reduced compared to when the spinning packs 22 are arranged extending only in the left-right direction. This prevents the horizontal distance between the first guide 6 and the second guide 7, which are located at both ends, from increasing, and also prevents the vertical distance between the first guide and the second guide, which is necessary to set the yarn angle θ to 9 degrees or less, from increasing. This makes it possible to reduce the height of the entire yarn production equipment 1. Note that the "first row" described in the claims refers to the spinning packs 22 arranged along the first circular arc 51, and the "second row" refers to the spinning packs 22 arranged along the second circular arc 52.

[0038] In addition, the plurality of cooling cylinders 41, the plurality of oil supply guides 5, and the plurality of first guides 6 arranged directly below the plurality of spinning packs 22 are also arranged in two rows along a first arc 51 and a second arc 52 in a plan view. In addition, the cooling device 4 equipped with the plurality of cooling cylinders 41 and the cooling air supply box 42 is circular in a plan view, similar to the spinning beam 21.

[0039] 5, the spinning beam 21 has an empty space (empty portion) 100a in which no spinning pack 22 is arranged in a part of the circumferential direction in a plan view. The empty space 100a extends in the front-rear direction from the outer edge side of the spinning beam 21 toward the center side, and penetrates the spinning beam 21 from the upper end to the lower end. That is, as shown in FIG. 4, the spinning beam 21 has a circular shape in a plan view, with a portion from a part of the outer edge to the center being hollowed out. Directly below the empty space 100a, a lower space 100b is formed in which the cooling cylinder 41, the oil supply guide 5, and the first guide 6 are not arranged. Since no spinning pack 22 is arranged in the empty space 100a, the yarn Y is not spun from the spinning pack 22 into the lower space 100b. The empty space 100a and the lower space 100b are collectively referred to as the accommodation space 100. A wall 101 is formed so as to surround the left and right directions and the front of the accommodation space 100, and the rear of the accommodation space 100 is open. An opening 102 is formed at a position on the front side of the lower space 100b side of the wall 101. Note that the polymer tank 23, polymer piping 25, and cooling cylinder 41 are not shown in Fig. 5. Also, only one spinning pack 22 is shown, and the other spinning packs 22 are not shown.

[0040] The above-mentioned cooling air piping and oil agent piping (both not shown) are accommodated in the accommodation space 100. Each piping passes through an opening 102 and is connected to the cooling air supply box 42 of the cooling device 4 and each oil supply guide 5, both of which are located outside the accommodation space 100. Although not shown in the figure, the multiple oil supply guides 5 and the multiple first guides 6 are disposed from the wall 101 of the accommodation space 100 to positions directly below each spinning pack 22 via support members not shown.

[0041] (effect) The spinning production equipment 1 of this embodiment includes a plurality of spinning packs 22, a spinning beam 21 into which the spinning packs 22 are inserted, a plurality of first guides 6 arranged directly below the spinning packs 22, and a second guide 7 arranged below the plurality of first guides 6. The plurality of spinning packs 22 are arranged along a first arc 51 and a second arc 52 inside the first arc 51. In order to ensure the quality of the yarn Y, it is necessary to suppress an increase in the yarn angle θ of the yarn Y traveling between the first guide 6 and the second guide 7. For example, one method of suppressing an increase in the yarn angle θ would be to increase the vertical distance between the first guide 6 and the second guide 7, but this would increase the height of the spinning production equipment 1. According to this embodiment, the plurality of spinning packs 22 are arranged along the first arc 51 and the second arc 52. Therefore, when the number of spinning packs 22 is increased, the horizontal distance between the first guide 6 arranged directly below the spinning packs 22 and the second guide 7 arranged below the first guide 6 can be prevented from increasing, compared to when the spinning packs 22 are arranged in one direction. This makes it possible to shorten the vertical distance between the first guide 6 and the second guide 7 required to prevent an increase in the yarn angle θ, and therefore makes it possible to reduce the height dimension of the spinning production equipment 1 even if the number of spinning packs 22 is increased.

[0042] In the spinning production equipment 1 of this embodiment, the spinning beam 21 has a circular shape, and the outer edge of the spinning beam 21 is formed to follow the spinning packs 22 arranged along the first arc 51. This makes it possible to reduce the portion of the spinning beam 21 where the spinning packs 22 are not arranged, thereby realizing space saving for the spinning device 2 and, ultimately, space saving for the entire spinning production equipment 1.

[0043] According to this embodiment, the distance from the center of the arc to the spin packs 22 arranged along the first arc 51 and the distance from the center of the arc to the spin packs 22 arranged along the second arc 52 are both uniform. Therefore, it is easy to make the lengths of the polymer pipes 25 connected to the multiple spin packs 22 arranged along the first arc 51 and the multiple spin packs 22 arranged along the second arc 52 uniform, and there is no need to use a complex flow path to make the lengths of the polymer pipes 25 uniform. This makes it easy to realize a configuration in which the polymer passing through the polymer pipes 25 is uniformly heated.

[0044] Furthermore, each yarn Y spun from the multiple spin packs 22 needs to be threaded onto the first guide 6. According to this embodiment, the first guides 6 arranged below the spin packs 22 are arranged in two rows along the first arc 51 and the second arc 52, similar to the spin packs 22. This allows an operator to move along the arcs and thread the yarn onto the first guide arranged along the second arc 52 through the gaps between the first guides arranged along the first arc. This allows the yarn Y to be easily threaded onto the first guide 6 without being interfered with by other yarns Y spun below, improving operability. The same can be said for the threading operation onto the oil supply guide 5.

[0045] In the spinning production equipment 1 of this embodiment, the spinning pack 22 has an empty space 100a that is not disposed in a part of the circumferential direction in a plan view. The empty space 100a extends in the front-rear direction from the outer edge side of the spinning beam 21 toward the center. The cooling air pipe (not shown) that supplies cooling air to the cooling device 4 and the oil agent pipe (not shown) that supplies oil agent to the oil supply guide 5 may be cut or clogged, and replacement of the cooling air pipe or the oil agent pipe may be required while the yarn Y is being spun by the spinning pack 22. According to this embodiment, below the empty space 100a where the spinning pack 22 is not disposed, there is a lower space 100b where the yarn Y is not spun. Therefore, an operator can access the cooling device 4 and the oil supply guide 5 from the lower space 100b, and can easily replace the pipes even while the yarn Y is being spun.

[0046] In this embodiment, the multiple first guides 6 and second guides 7 are arranged so that the yarn angle θ, which is the angle of the yarn Y running between the yarn running portion 71 of each first guide 6 and second guide 7 with respect to the vertical direction, is 9 degrees or less. This more reliably ensures the quality of the yarn Y. Also, in this embodiment, the spinning packs 22 are arranged in two rows along the first arc 51 and the second arc 52. This makes it easier to thread the yarn Y onto the first guide 6 compared to when there are three or more rows of spinning packs 22.

[0047] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these examples and various modifications are possible within the scope of the claims.

[0048] In the above embodiment, the spinning packs 22 are arranged along a first arc 51 on a circular arc and a second arc 52 inside the first arc. However, for example, as shown in FIG. 6(a), the spinning packs 122 may be arranged in two rows along a U-shape. In this case, for example, the spinning beam 121 has a U-shape whose outer edge is formed along the position where the spinning packs 122 are arranged. The spinning packs may also be arranged in two rows along a curved straight line. For example, as shown in FIG. 6(b), the spinning packs 222 may be arranged in two rows along a U-shape and the spinning beam 221 may be U-shaped. Alternatively, as shown in FIG. 6(c), the spinning packs 322 may be arranged in two rows along a V-shape and the spinning beam 321 may be V-shaped. The central space of the U-shape of the spinning pack 122, the central space of the U-shape of the spinning pack 222, and the central space of the V-shape of the spinning pack 322 can each be used as an "unarranged portion." Alternatively, the spin packs 22 may be arranged in two rows along a curved or bent straight line in some places, and in other places along a straight line in other places.

[0049] In the above embodiment, the spinning pack 22 that spins one yarn Y consisting of multiple filaments has been described, but the present invention is also applicable to a spinning pack 22 that expands two or more yarns Y. In addition, the spinning packs 22 may be arranged in three or more rows along the arc, but in terms of ease of threading the yarn onto the oil supply guide 5 and the first guide 6, it is preferable to arrange them in two rows.

[0050] In the above embodiment, the empty space 100a penetrates the spinning beam 21 from the upper end to the lower end, and has a hollowed-out shape from a part of the outer edge of the circle of the spinning beam 21 to the center in a plan view. However, the spinning beam 21 may be completely circular in a plan view, and may have an empty part in a part of the circumferential direction in a plan view where no spinning pack 22 is simply placed. In this case, the empty space 100a is not formed, and the accommodation space 100 consists only of the lower space 100b.

[0051] Furthermore, the spinning pack 22 may not have an unplaced portion. In this case, the spinning pack 22 is placed along the entire circumference of a circle. However, if the spinning pack 22 does not have an unplaced portion, when replacing the cooling air piping or the oil agent piping while the yarn Y is being spun, it is necessary to replace the cooling air piping or the oil agent piping, for example, by weaving between the spun yarn Y. Alternatively, a through-hole penetrating in the vertical direction may be provided in the center of the spinning beam 21, and the cooling air piping and the oil agent piping extending downward from above the through-hole may need to be replaced. In these cases, since this work is difficult, it is preferable that the spinning pack 22 has an unplaced portion.

[0052] In the above embodiment, a comb guide is used as the second guide 7, but it is also possible to adopt a guide such as a U-shaped guide, in which one guide member is provided with one yarn running section that guides the yarn Y.

[0053] In the above embodiment, the wall 101 is formed so as to surround the left-right and front of the storage space 100, but the wall 101 does not have to be formed. In this case, the pipes are stored in the storage space 100 that is not surrounded by the wall 101. However, it is preferable to form the wall 101 because the yarn Y spun from the spinning device 2 is likely to come into contact with the pipes, making pipe replacement difficult. The wall 101 may also be formed so as to surround the left-right, top-bottom and front of the storage space 100. Furthermore, instead of the wall 101, two plates may be arranged on one side and the other side in the left-right direction of the storage space 100.

[0054] In addition, in the above embodiment, one opening 102 is formed in the wall 101 surrounding the accommodation space 100, but multiple openings 102 may be formed. In this case, the cooling air piping and the oil solution piping pass through the openings 102 at any positions and are connected to the internal space 44 and the oil supply guide 5, respectively.

[0055] In the above embodiment, the first guide 6 and the second guide 7 are arranged so that the yarn angle θ is 9 degrees or less. However, the yarn angle θ does not have to be 9 degrees or less. For example, the yarn angle θ is set to a predetermined value or less as appropriate depending on the quality of the yarn Y to be ensured. [Explanation of symbols]

[0056] 1. Spinning production equipment 6 First Guide 7 Second Guide 21 Spinning beam 22 Spinning Pack 24 nozzle 51 First Arc 52 Second Arc 100 storage space 100a Unplaced space 100b Downward space

Claims

1. a plurality of spinning packs in which molten polymer is stored and which spin yarn downward from spinnerets provided at the lower ends of the respective spinning packs; a spinning beam into which the plurality of spinning packs are inserted; a plurality of first guides arranged directly below the plurality of spin packs, respectively, and guiding the plurality of yarns individually; a second guide disposed below the first guides and converging the yarns guided by the first guides; Equipped with the plurality of spin packs include a first row arranged along a circular arc in a plan view and a second row arranged along the first row, All of the plurality of spinning packs are not arranged along two imaginary parallel straight lines in a plan view, The outer edge of the spinning beam is formed in an arc along the plurality of spinning packs arranged along the one arc, The spinning beam has an empty portion in a circumferential direction in plan view where no spinning pack is placed, The undisposed portion extends from the outer edge side of the spinning beam toward the center side, a lower space in which the first guide is not disposed is formed directly below the undisposed portion, Piping is accommodated in the undisposed portion and the lower space, A wall is further provided between the pipe and the spinning beam so as to surround the pipe, When the direction in which the unplaced portion extends is defined as the front-to-rear direction, the center side of the spinning beam in the front-to-rear direction is defined as the front side, and the direction perpendicular to both the vertical direction and the front-to-rear direction is defined as the left-to-right direction, the wall surrounds the front side of the piping in the front-to-rear direction and both sides in the left-to-right direction, A spinning production facility characterized in that the angle of the multiple yarns traveling between the first guide and the second guide with respect to the vertical direction is 9 degrees or less.

2. 2. The spinning production facility according to claim 1, wherein the plurality of spinning packs are arranged in two rows, the first row and the second row.

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