Spinning equipment

Abstract

To provide a spinning equipment that can suitably suppress heat transfer to a tabular component provided lower than a heating box body.SOLUTION: A spinning equipment is assembled with a heating box body 6 to be attached with a spinning pack having a nozzle, a tabular component 23 fixed to a heating box body 6, and a heat insulation structure 20 for suppression of heat transfer to the tabular component 23. The heat insulation structure 20 includes a heat insulation material 21, 22 provided between the heating box body 6 and the tabular component 23 and an attachment component 40 for attaching the tabular component 23 to the heating box body 6. The attachment component 40 includes a first bolt 42 fixed to the heating box body 6, a second bolt 43 for fixing the tabular component 23 at a position different from the first bolt 42 in the horizontal direction, and a plate 41 arranged inside of the heat insulation material 21, 22 and connecting the first bolt 42 and the second bolt 43.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a spinning installation. [Background technology]

[0002] Conventionally, melt spinning apparatuses have been known that melt-spin polymers such as polyester to produce filament yarns. The melt spinning apparatus described in Patent Document 1 spins a thermoplastic polymer from a spinneret 1, and a heat insulating member 2 is provided below the spinneret 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-138301 Summary of the Invention [Problem to be solved by the invention]

[0004] Although the melt spinning apparatus described in Patent Document 1 is provided with a heat insulating member 2 below the spinneret 1, it is difficult to say that heat transfer is suppressed simply by providing the heat insulating member 2. Spinning equipment generally includes a heating box to which a spinning pack having a spinneret is attached, and a plate-like member is provided below the heating box so that other devices, such as a cooling device, can be placed. If this plate-like member becomes too hot, it may adversely affect other devices, which is undesirable.

[0005] In view of the above problems, the present invention provides a spinning device that can suitably suppress heat transfer to a plate-like member provided below a heating box. [Means for solving the problem]

[0006] (1) The spinning equipment is a heating box to which a spinning pack having a spinneret is attached; a plate-shaped member fixed to the heating box; a heat insulating structure that suppresses heat transfer to the plate-like member; Equipped with The heat insulating structure is a heat insulating material provided between the heating box and the plate-like member; an attachment member that attaches the plate-like member to the heating box, The mounting member is a first mounting member fixed to the heating box; a second mounting member that fixes the plate-like member at a position different from that of the first mounting member in the horizontal direction; a connecting member disposed inside the heat insulating member and connecting the first mounting member and the second mounting member, Spinning equipment.

[0007] According to the spinning equipment described in (1) above, the thermal insulation structure of the spinning equipment includes a mounting member in addition to the thermal insulation material. This mounting member is used to mount the plate-shaped member to the heating box and is composed of multiple members. Heat generated in the heating box is transferred to the plate-shaped member via the mounting member, but the heat transfer path is longer than the heat transfer path when the plate-shaped member is directly mounted to the heating box with a single member (e.g., a bolt). In particular, by arranging the first and second mounting members of the mounting member at different positions in the horizontal direction, the distance between the connecting members of the mounting members is increased, and the heat transfer path is longer. In other words, by passing through a heat transfer path with high thermal resistance, the temperature of the heat transferred to the plate-shaped member is lowered, making it possible to suitably suppress heat transfer to the plate-shaped member.

[0008] In addition, the mounting member can be given the function of attaching the plate-shaped member to the heating box and the function of suppressing heat transfer from the heating box to the plate-shaped member, without unnecessarily increasing the thickness of the insulating material. Furthermore, if the amount of heat transferred to the plate-shaped member is large, the amount of heat dissipated from the plate-shaped member also increases, which is undesirable from the viewpoint of energy conservation. In this regard, by suppressing the amount of heat transferred to the plate-shaped member, the amount of heat dissipated can also be suppressed, contributing to energy conservation.

[0009] The "plate-like member fixed to the heating box" includes not only a mode in which the plate-like member is directly fixed to the heating box, but also a mode in which the plate-like member is indirectly fixed to the heating box. For example, if a nozzle heater for heating the nozzle is provided, the plate-like member may be fixed to the heating box via the nozzle heater.

[0010] Furthermore, "an attachment member for attaching the plate-shaped member to the heating box" includes both an embodiment in which the plate-shaped member is directly attached to the heating box, and an embodiment in which the plate-shaped member is indirectly attached to the heating box via, for example, a base heater. Similarly, "a first attachment member fixed to the heating box" includes both an embodiment in which the first attachment member is directly fixed to the heating box, and an embodiment in which the first attachment member is indirectly fixed to the heating box via, for example, a base heater.

[0011] (2) The spinning equipment is A spacer is provided to ensure the thickness of the heat insulating material. It is preferable.

[0012] According to the spinning equipment of (2) above, the spacer for ensuring the thickness of the insulating material can prevent the insulating material from being crushed when the plate-shaped member is attached to the heating box body using the mounting member, and the thickness of the insulating material can be kept uniform.

[0013] (3) The spinning equipment is The heat insulating material includes a first heat insulating material on the heating box body side and a second heat insulating material arranged below the first heat insulating material, The connecting member is disposed between the first insulating material and the second insulating material. It is preferable.

[0014] According to the spinning equipment of (3) above, by providing a connecting member between two heat insulating members, the degree of freedom of the connecting member can be increased, and the heat transfer path can be made longer, thereby increasing the thermal resistance of the heat transfer path. As a result, the temperature of the heat transferred to the plate-like member becomes lower, and it becomes possible to suitably suppress the heat transfer to the plate-like member.

[0015] (4) The spinning equipment is It is preferable that the connecting member is flat, the first insulating material is sandwiched between the connecting member and the heating box, and the connecting member is fixed to the heating box by the first mounting member.

[0016] According to the spinning equipment of (4) above, the connecting member is made flat, so that the heat transfer path can be made longer. As a result, the thermal resistance of the heat transfer path can be made larger, so that the temperature of the heat transferred to the plate-like member is lowered, and it becomes possible to suitably suppress the heat transfer to the plate-like member.

[0017] In addition, the phrase "the connecting member is flat and sandwiches the first insulating material between it and the heating box body" means that it is sufficient that the first insulating material is placed between the connecting member and the heating box body, and it is not essential that the first insulating material be in contact with the connecting member, and similarly, it is not essential that the first insulating material be in contact with the heating box body.

[0018] Furthermore, the description of the connecting member, "fixed to the heating box body by the first mounting member," includes not only a case in which the connecting member is directly fixed to the heating box body, but also a case in which the connecting member is indirectly fixed to the heating box body, for example, via a nozzle heater.

[0019] (5) The spinning equipment is It is preferable that the connecting member sandwich the second insulating material between the connecting member and the plate-like member, and that the connecting member be fixed to the plate-like member by the second mounting member.

[0020] According to the spinning equipment of (5) above, the heat transfer path can be made longer, and as a result, the thermal resistance of the heat transfer path can be made larger, so that the temperature of the heat transferred to the plate-like member is lowered, and it is possible to suitably suppress the heat transfer to the plate-like member.

[0021] (6) The spinning equipment is a cooling box disposed below the plate-like member; a sealing member provided between the plate-like member and the cooling box; It is preferable that the sensor further comprises:

[0022] According to the spinning equipment of (6) above, by suitably suppressing heat transfer to the plate-like member, the amount of heat transferred to the cooling box and the sealing member can also be suppressed, thereby making it possible to suppress a decrease in cooling efficiency and also to suppress deterioration of the sealing member due to heat.

[0023] The spinning equipment according to the present invention may be configured only with the configuration described in the spinning equipment of (1) above, or may be configured by any combination of the configuration described in (1) above and any of the configurations described in (2) to (6) above, within the scope of compatibility. When the configuration described in (1) above is combined with any of the configurations described in (2) to (6) above, all or part of the configuration described in (1) above can also be combined with all or part of the configurations described in (2) to (6) above, within the scope of compatibility. [Effects of the Invention]

[0024] According to the present invention, it is possible to provide a spinning device capable of suppressing deterioration due to heat of a sealing member that seals a cooling box. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a schematic diagram of an example of a spinning facility according to an embodiment. [Figure 2] 10A and 10B are diagrams for explaining the configuration between a heating box and a cooling box. [Figure 3] FIG. [Figure 4] FIG. 2 is a diagram for explaining a heat transfer path in a spinning facility. [Figure 5] FIG. 10 is a diagram illustrating a modified example of the spinning equipment. [Figure 6] 10A and 10B are diagrams showing modified examples of the connecting member; [Figure 7] FIG. 10 is a diagram showing a modified example of the plate. [Figure 8] FIG. 10 is a diagram for explaining the configuration of a modified example in which the spinning equipment does not include a die heater. DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0027] [Outline of spinning equipment] Fig. 1 is an example of a schematic diagram of a spinning equipment 1 according to this embodiment. For convenience of explanation, as shown in Fig. 1, the vertical direction of the paper surface is the up-down direction, and the horizontal direction of the paper surface is the front-rear direction. The depth direction of the paper surface is the left-right direction.

[0028] The spinning equipment 1 according to this embodiment is equipment for producing a yarn Y made of synthetic fiber. The spinning equipment 1 includes at least a spinning machine 2, a cooling box 3, and an oil application device 4.

[0029] The spinning machine 2 is configured to spin multiple threads Y made of molten polymer, and has at least a heating box 6 having an approximately rectangular parallelepiped shape and multiple spinning packs 7 respectively attached to multiple pack housings formed in the heating box 6.

[0030] The spinning packs 7 are arranged in the left-right direction. Although not shown, the spinning packs 7 are arranged alternately in the front-rear direction. In other words, the spinning packs 7 are arranged in a staggered pattern when viewed from the top-bottom direction. Polymer is supplied to each spinning pack 7 from a polymer tank (not shown) via multiple polymer pipes. The spinning packs 7 heat the polymer supplied from the polymer tank to a predetermined temperature (e.g., 300°C) in the heating box 6 to produce molten polymer.

[0031] A spinneret 8 is disposed at the lower end of each spin pack 7. A spinneret heater 12 is disposed around the spinneret 8. The spinneret 8 has, for example, multiple nozzles (not shown). The spinneret 7 discharges molten polymer P from the multiple nozzles of the spinneret 8. The molten polymer P discharged from the multiple nozzles is cooled in the cooling box 3 to become a single yarn Y consisting of multiple filaments. Note that it is not essential for each spinneret 8 to have multiple nozzles, and each spinneret 8 may have only one nozzle. In this case, the yarn Y is produced as a monofilament yarn.

[0032] The cooling box 3 has a spinning tube 31 arranged below the spinning machine 2 (heating box 6) and a duct 32 connected to the spinning tube 31. The cooling box 3 also has a compressed air source (not shown) that supplies cooling air CF to the spinning tube 31 via the duct 32. For example, an annular yarn cooling box is used as the cooling box 3. The spinning tube 31 is, for example, a hollow box that extends in the vertical direction so as to surround the molten polymer P spun out from the spinneret 8. The spinning tube 31 has a straightening plate 33 inside, and the cooling air CF passing through the duct 32 is supplied to the space below the straightening plate 33 of the spinning tube 31. The cooling air CF that flows into the lower space of the spinning tube 31 passes through the straightening plate 33, is straightened upward, and flows into the space above the straightening plate 33 of the spinning tube 31.

[0033] The cooling air CF that has flowed into the upper space of the spinning tube 31 is rectified when passing through a filter member 34 that is composed of, for example, a punching filter and a cooling filter, and flows into the hollow part of the spinning tube 31. As a result, the cooling air CF is blown onto the molten polymer P from the circumferential direction, and the molten polymer P is cooled.

[0034] As will be described later, the cooling box 3 is disposed closely to the heating box 6 of the spinning machine 2 via a heat insulating structure 20, which will be described later, and the heat insulating structure 20 prevents heat from being transmitted from the heating box 6. A seal member 24 is provided between the heating box 6 and the spinning tube 31 of the cooling box 3. The seal member 24 prevents leakage of the cooling air CF.

[0035] The cooling box 3 is configured to be movable up and down by, for example, an air cylinder (not shown). For example, by lowering the cooling box 3 from the spinning machine 2 by an air cylinder (not shown), work can be performed on the spinneret 8 of the spinning machine 2, for example.

[0036] Although not shown, a slow cooling section is arranged vertically between the spinning machine 2 and the cooling box 3. The slow cooling section is configured to gradually cool the thread material discharged from the spinning machine 2 until it is cooled by the cooling box 3.

[0037] The oil application device 4 is disposed below the cooling box 3, and applies oil to the yarn Y spun downward from a corresponding one of the multiple spinning packs 7. The yarn Y to which oil has been applied by the oil application device 4 is sent to a yarn winding device (not shown) disposed below the oil application device 4.

[0038] (Configuration between heating box 6 and cooling box 3) FIG. 2 is a diagram for explaining the configuration between the heating box 6 and the cooling box 3. As shown in FIG.

[0039] Between the heating box 6 and the cooling box 3, an upper heat insulating member 10, a nozzle heater 12, a heat insulating structure 20, a plate-like member 23, and a sealing member 24 are provided in this order from above.

[0040] The thermal insulation structure 20 is composed of a middle insulation member 21, a bottom insulation member 22, and a mounting member 40, which will be described later. The bottom insulation member 22 is provided below the middle insulation member 21. Both the "middle insulation member 21" and the "bottom insulation member 22" correspond to the "thermal insulation" in the present invention. Furthermore, the "middle insulation member 21" and the "bottom insulation member 22" correspond to the "first insulation" and the "second insulation" in the present invention, respectively.

[0041] The upper insulation member 10, the middle insulation member 21, and the lower insulation member 22 are made of, for example, ceramic felt or the like, and have a lower thermal conductivity than iron. The upper insulation member 10 is provided between the heating box 6 and the base heater 12. The upper insulation member 10 and the base heater 12 are fixed to the heating box 6 with, for example, bolts 11. The middle insulation member 21 is provided between the base heater 12 and a plate 41 (described below), and is provided closer to the heating box 6 than the lower insulation member 22. The lower insulation member 22 is provided between the plate 41 (described below) and a plate-like member 23, and is provided closer to the cooling box 3 than the middle insulation member 21. The plate-like member 23 is made of, for example, iron, and functions as a mounting surface for mounting the cooling device 3, with a sealing member 24 sandwiched between them. The plate-like member 23 is fixed to the heating box 6 via the base heater 12 by the mounting member 40 described below, and the middle insulating member 21 and the bottom insulating member 22 are also fixed to the heating box 6.

[0042] The sealing member 24 is made of, for example, silicone rubber, and is provided between the plate-like member 23 and the cooling box 3. The sealing member 24 is adhered to the upper surface of the cooling box 3, and prevents the cooling air CF from leaking from the cooling box 3. The plate-like member 23 and the sealing member 24 are separably adhered to each other. As described above, the cooling box 3 is lowered from the spinning machine 2 by the air cylinder. At this time, the sealing member 24 separates from the plate-like member 23 and is lowered together with the cooling box 3.

[0043] The mounting member 40 is a member that fixes the middle insulating member 21, the lower insulating member 22, and the plate-like member 23 to the heating box 6 via the base heater 12. The mounting member 40 has a plate 41, a first bolt 42, and a second bolt 43. The first bolt 42 and the second bolt 43 are connected via the plate 41. The above-mentioned "plate 41," "first bolt 42," and "second bolt 43" correspond to the "connecting member," "first mounting member," and "second mounting member" of the present invention, respectively.

[0044] The plate 41 is plate-shaped and is provided inside the insulation members (middle insulation member 21, bottom insulation member 22), more specifically between the middle insulation member 21 and the bottom insulation member 22. The plate 41 is preferably made of a material such as stainless steel that has a lower thermal conductivity than the plate-shaped member 23 made of iron. Furthermore, from the viewpoint of suppressing radiation, the surface of the plate 41 is preferably white or glossy rather than black. The horizontal surface of the plate 41 has the same size and shape as the middle insulation member 21 and the bottom insulation member 22, and is configured to be thinner than the middle insulation member 21 and the bottom insulation member 22.

[0045] FIG. 3 is a plan view of the plate 41. As shown in FIG. 3, the plate 41 has a plurality of taps 41A near the outer periphery. Second bolts 43 (see FIG. 2) are inserted into these taps 41A. The plate 41 also has a plurality of holes 41B at locations away from the taps 41A. First bolts 42 (see FIG. 2) are inserted into these holes 41B. The plate 41 also has holes 41C corresponding to a plurality of spinning tubes 31 having diameters larger than the taps 41A and the holes 41B. Providing the plurality of holes 41C lengthens the heat transfer path in the plate 41, as described below. The middle insulation member 21 and the bottom insulation member 22 (both see FIG. 2) have through holes that penetrate in the vertical direction at positions that overlap with the holes 41C.

[0046] Additionally, multiple spacers 45 are provided at multiple locations on each of the front and back surfaces of the plate 41. These spacers 45 are intended to ensure the thickness of the middle insulation member 21 and the bottom insulation member 22. Here, of the front and back surfaces of the plate 41, the surface of the plate 41 facing the middle insulation member 21 is referred to as the "front surface," and the surface of the plate 41 facing the bottom insulation member 22 is referred to as the "back surface." If the thickness of the spacers 45 provided on the front surface of the plate 41 (the height of the spacers 45 protruding from the surface of the plate 41) is, for example, 12 mm, this prevents the middle insulation member 21 from being crushed when the first bolt 42 is tightened, and allows the thickness of the middle insulation member 21 to be maintained uniformly at 12 mm. Similarly, the thickness of the spacers 45 provided on the back surface of the plate 41 allows the thickness of the bottom insulation member 22 to be maintained uniform when the second bolt 43 is tightened.

[0047] Instead of or in addition to providing the spacer 45 on the back surface of the plate 41, a spacer having the same function as the spacer 45 may be provided on the surface of the plate-like member 23 facing the bottom insulation member 22. Even in this case, it is possible to prevent the bottom insulation member 22 from being crushed when the second bolts 43 are tightened, and to maintain a uniform thickness of the bottom insulation member 22. Furthermore, it is more preferable to provide a spacer between the heating box 6 and the base heater 12 to maintain a uniform thickness of the top insulation member.

[0048] For convenience, the above-mentioned spacer 45 is omitted from illustration in FIG. 2, FIG. 4 (described later), FIG. 5 (described later), FIG. 7 (described later), and FIG. 8 (described later).

[0049] The first bolts 42 secure the bottom insulating member 22, the plate 41, and the middle insulating member 21 to the heating box 6 via the base heater 12. Specifically, the bottom insulating member 22, the middle insulating member 21, and the base heater 12 have holes that coincide with the holes 41B of the plate 41 and into which the threaded portions of the first bolts 42 are inserted. The first bolts 42 are inserted into each hole from below with the bottom insulating member 22, the plate 41, the middle insulating member 21, the base heater 12, and the heating box 6 stacked one on top of the other. The threaded portions of the first bolts 42 engage with the holes in the base heater 12, and the heads of the first bolts 42 are positioned in the holes in the bottom insulating member 22. As a result, the bottom insulating member 22, the plate 41, and the middle insulating member 21 are integrally secured to the heating box 6 via the base heater 12 by the first bolts 42.

[0050] The second bolts 43 secure the lower insulation member 22 and the plate-shaped member 23 to the plate 41. Specifically, the lower insulation member 22 and the plate-shaped member 23 have holes that coincide with the taps 41A of the plate 41 and into which the threaded portions of the second bolts 43 are inserted. The second bolts 43 are inserted into the holes from below while the lower insulation member 22 and the plate-shaped member 23 are stacked. The threaded portions of the second bolts 43 engage with the taps 41A of the plate 41, and the heads of the second bolts 43 are positioned in the holes of the plate-shaped member 23. As a result, the lower insulation member 22 and the plate-shaped member 23 are integrally secured to the plate 41 by the second bolts 43. As shown in FIG. 3 , the taps 41A into which the second bolts 43 are inserted are located at a different position on the plate 41 from the holes 41B into which the first bolts 42 are inserted. That is, the second bolts 43 are located at a different position from the first bolts 42 in the horizontal direction.

[0051] In this way, the plate 41 and the middle insulating member 21 are fixed to the heating box 6 via the nozzle heater 12 with the first bolt 42, and the lower insulating member 22 and the plate-shaped member 23 are fixed to the plate 41 with the second bolt 43, so that the middle insulating member 21, the lower insulating member 22, and the plate-shaped member 23 are fixed to the heating box 6 via the nozzle heater 12.

[0052] (Heat transfer path of spinning equipment 1) Hereinafter, the path of heat (heat transfer path) from the die heater 12 and the heating box 6 to the plate-like member 23 in the spinning equipment 1 provided with the mounting member 40 will be described with reference to Fig. 4. Fig. 4 is a diagram for explaining the heat transfer path in the spinning equipment 1. The arrows in Fig. 4 indicate the direction in which heat is transferred.

[0053] The middle insulation member 21 is disposed below the base heater 12, and as shown by the arrows in Figure 4, heat generated in the base heater 12 and the heating box 6 is transferred via the first bolt 42 to the plate 41 disposed below the middle insulation member 21. In the flat plate 41, heat is transferred horizontally from the first bolt 42. The bottom insulation member 22 is disposed below the plate 41, and because it is flat, heat is transferred via the second bolt 43 to the plate-like member 23 disposed below the bottom insulation member 22.

[0054] In this way, heat generated in the die heater 12 and the heating box 6 is transferred to the plate-like member 23. However, in the spinning equipment 1 of this embodiment, the heat transfer path is longer than in a structure in which the plate-like member 23 is directly fixed to the die heater 12 with bolts without providing the plate 41 (hereinafter referred to as the conventional structure). In particular, because the plate 41 has multiple holes 41C, the heat transfer path between the second bolt 43 inserted into the tap 41A and the first bolt 42 inserted into the hole 41B is longer by avoiding the holes 41C. This increases the thermal resistance of the heat transfer path and reduces the amount of heat transfer. In other words, the temperature of the heat transferred to the plate-like member 23 is lower than in the conventional structure, thereby suppressing thermal deterioration of the sealing member 24. According to experimental results, the temperature of the plate-like member 23 was 190.8°C in the conventional structure, but was 174.6°C in the structure of this embodiment (see FIGS. 2 and 4), achieving a temperature reduction of more than 15°C.

[0055] As described above, in this embodiment, the mounting member 40 has the function of attaching the plate-shaped member 23 to the heating box 6 and the function of suppressing heat transfer from the base heater 12 and the heating box 6 to the plate-shaped member 23, thereby making it possible to suitably suppress heat transfer to the plate-shaped member 23. Furthermore, if the amount of heat transferred from the base heater 12 and the heating box 6 to the plate-shaped member 23 is large, the amount of heat dissipation from the plate-shaped member 23 also increases, which is undesirable from the viewpoint of energy saving. However, since the amount of heat transferred to the plate-shaped member 23 is suppressed, the amount of heat dissipation is also suppressed, which can contribute to energy saving.

[0056] Furthermore, since the amount of heat transferred to the cooling box 3 and the seal member 24 can be reduced, a decrease in cooling efficiency can be suppressed, and the seal member 24 can also be prevented from being deteriorated by heat.

[0057] (Variation) Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and various modifications are possible within the scope of the claims. For example, in the above-described embodiments, the spinning equipment 1 has two heat insulating members, but it may have only one heat insulating member. In this case, the member connecting the first bolt 42 and the second bolt 43 of the mounting member 40 may be disposed inside the heat insulating member 25.

[0058] 5 is a diagram illustrating a modified example of the spinning equipment. In the modified spinning equipment, an upper insulating member 10, a die heater 12, an insulating structure 20A, a plate-like member 23, and a sealing member 24 are provided between the heating box 6 and the cooling box 3 in this order from above.

[0059] The heat insulating structure 20A is composed of a heat insulating member 25 and a mounting member 40A. In this configuration, the plate-like member 23 and the heat insulating member 25 are fixed to the heating box 6 by the mounting member 40A via the base heater 12. Note that the above-mentioned "heat insulating member 25" also corresponds to the "heat insulating material" of the present invention.

[0060] The mounting member 40A has a first bolt 42, a second bolt 43, and a connecting member 44. The first bolt 42 fixes the heat insulating member 25 to the heating box 6 via the base heater 12. The heat insulating member 25 and the base heater 12 have holes into which the threaded portion of the first bolt 42 is inserted. The first bolt 42 is inserted into each hole from below with the heat insulating member 25, the base heater 12, and the heating box 6 overlapping each other. The threaded portion of the first bolt 42 engages with the hole in the base heater 12, and the head is positioned in the hole in the heat insulating member 25. In this way, the heat insulating member 25 is fixed to the heating box 6 via the base heater 12 by the first bolt 42.

[0061] The second bolts 43 secure the plate-shaped member 23 to the heat insulating member 25. Holes into which the threaded portions of the second bolts 43 are inserted are provided in the heat insulating member 25 and the plate-shaped member 23. The second bolts 43 are inserted into the holes from below with the heat insulating member 25 and the plate-shaped member 23 overlapping each other. The threaded portions of the second bolts 43 engage with the holes in the heat insulating member 25, and the heads of the second bolts 43 are positioned in the holes in the plate-shaped member 23. In this way, the plate-shaped member 23 is secured to the heat insulating member 25 by the second bolts 43.

[0062] Connecting member 44 connects first bolt 42 and second bolt 43. Connecting member 44 is, for example, rod-shaped, and is disposed inside heat insulating member 25 through a notch formed in heat insulating member 25. Connecting member 44 may be plate-shaped or a bent member as long as it can be disposed inside heat insulating member 25 and connect first bolt 42 and second bolt 43.

[0063] When connecting the first bolt 42 and the second bolt 43 with the connecting member 44, instead of disposing the connecting member 44 inside the insulating member 25, the connecting member 44 may be disposed between the middle insulating member 21 and the bottom insulating member 22, for example, as shown in Fig. 2. By disposing the connecting member 44 between the middle insulating member 21 and the bottom insulating member 22, which are configured as separate members, the connecting member 44 can be disposed freely, and the heat transfer path can be extended.

[0064] FIG. 6 is a diagram showing a modified example of the connecting member 44. FIG. 6 is a plan view of the heat insulating member 25, and the connecting member 44 disposed inside the heat insulating member 25 is indicated by a dashed line. As shown in FIG. 6, the heat insulating member 25 is provided with a tap 25A into which the second bolt 43 (see FIG. 5) is inserted and a hole 25B into which the first bolt 42 (see FIG. 5) is inserted. The heat insulating member 25 also has a through hole 25C. The connecting member 44 disposed inside the heat insulating member 25 may be a linear member disposed so as to overlap the nearest tap 25A and hole 25B, or may be an annular member disposed so as to surround the through hole 25C. The through hole 25C is a hole provided so as to overlap the hole 41C in FIG. 3 when the plate 41 of the above-described embodiment is used.

[0065] Even with the configuration of this modified example, the heat transfer path is longer than in the conventional structure. This increases the thermal resistance of the heat transfer path and reduces the amount of heat transferred. In other words, the temperature of the heat transferred to the plate-like member 23 is lower than in the conventional structure, making it possible to suppress thermal deterioration of the sealing member 24.

[0066] In the above embodiment, the first bolt 42 is engaged with a hole in the base heater 12, and the second bolt 43 is engaged with a tap 41A provided on the plate 41 to secure the layers together, but nuts may also be used to secure the layers together. In addition, although the first and second mounting members of the present invention are bolts, they may also be screws, for example.

[0067] Furthermore, the plate 41 is not limited to the configuration described in the above embodiment. Fig. 7 is a diagram showing a modified example of the plate 41. As shown in Fig. 7, the holes 41B may be elongated holes, and the taps 41A may be closely spaced. Although not shown, the holes 41C formed in the plate 41 may also be elongated holes. Furthermore, the plate 41 may be punched to form small holes in addition to the holes 41C.

[0068] In the above-described embodiment, the plate 41 has a plurality of holes 41C formed therein, but these holes may not necessarily be formed therein. Furthermore, the holes 41C may have a polygonal shape such as a rectangular or triangular shape instead of a circular shape. Furthermore, the plate 41 may have notches cut into its edges, and any other configuration may be used as long as it can lengthen the electric heat path.

[0069] Furthermore, in the above-described embodiment, the spinning equipment 1 is equipped with the die heater 12, but it is not essential that the spinning equipment be equipped with the die heater 12, and the present invention can also be applied to spinning equipment that does not have the die heater 12. Fig. 8 is a diagram for explaining the configuration of a modified example in which the spinning equipment is not equipped with the die heater 12, and is a modified example of the diagram corresponding to Fig. 2, i.e., a diagram in which the dashed rectangular portion in Fig. 1 is enlarged.

[0070] In the modified example shown in Fig. 8, the spinning equipment does not include the die heater 12, and a middle insulating member 21, a bottom insulating member 22, a plate-like member 23, and a sealing member 24 are provided between the heating box 6 and the cooling box 3, in this order from top to bottom. Even with this configuration, heat generated in the heating box 6 is transferred to the plate 41 disposed below the middle insulating member 21 via the first bolt 42. Heat is transferred horizontally from the first bolt 42 to the flat plate 41. The bottom insulating member 22 is disposed below the plate 41, and because it is flat, heat is transferred via the second bolt 43 to the plate-like member 23 disposed below the bottom insulating member 22.

[0071] In this way, the heat generated in the heating box 6 is transferred to the plate-like member 23. However, in the spinning equipment of the modified example shown in Fig. 8, the heat transfer path is longer than in the conventional structure in which the plate-like member 23 is directly bolted to the heating box 6 without providing the plate 41, and therefore the thermal resistance of the heat transfer path is increased and the amount of heat transfer is reduced. Even in such a modified example, it is more effective to provide multiple holes 41C in the plate 41. Therefore, the temperature of the heat transferred to the plate-like member 23 is lower than in the conventional structure, and thermal deterioration of the sealing member 24 can be suppressed.

[0072] Furthermore, the number of first bolts 42 and second bolts 43 provided between the heating box 6 and the cooling box 3 is not particularly limited.

[0073] In the above-described embodiment, the plate-like member 23 functions as a mounting surface for mounting the cooling device 3, with the sealing member 24 sandwiched therebetween. That is, the cooling device 3 is mounted below the mounting member 23. However, what is mounted below the mounting member 23 is not limited to the cooling device 3, and other devices different from the cooling device 3 may also be mounted below the mounting member 23. [Explanation of symbols]

[0074] 1. Spinning equipment 2. Spinning machine 3 Cooling box body 4 Oil application device 6 Heating box 7 Spinning Pack 8 nozzle 20 Insulated structure 20A Insulated structure 21 Medium insulation material 22 Lower insulation member 23 Plate-shaped member 24 Sealing material 25 Heat insulating materials 31 Spinneret 32 Duct 33 Rectifier plate 34 Filter member 40 Mounting material 40A mounting material 41 Plate 41A Tap 41B hole 41C hole 42 First Bolt 43 Second bolt 44 Connecting member 45 spacer CF cooling air P molten polymer Y thread

Claims

1. a heating box to which a spinning pack having a spinneret is attached; a plate-shaped member fixed to the heating box; a heat insulating structure that suppresses heat transfer to the plate-like member; Equipped with The heat insulating structure is a heat insulating material provided between the heating box and the plate-like member; an attachment member that attaches the plate-like member to the heating box, The mounting member is a first mounting member fixed to the heating box; a second mounting member that fixes the plate-like member at a position different from that of the first mounting member in the horizontal direction; a connecting member disposed inside the thermal insulation material and connecting the first mounting member and the second mounting member, Spinning equipment.

2. A spacer is provided to ensure the thickness of the heat insulating material.

2. The spinning installation according to claim 1.

3. The heat insulating material includes a first heat insulating material on the heating box body side and a second heat insulating material arranged below the first heat insulating material, The connecting member is disposed between the first insulating material and the second insulating material. The spinning facility according to claim 1 or 2.

4. The connecting member has a flat plate shape, and the first insulating material is sandwiched between the connecting member and the heating box body, and the connecting member is fixed to the heating box body by the first mounting member. The spinning installation according to claim 3.

5. The connecting member sandwiches the second insulating material between the connecting member and the plate-like member, and is fixed to the plate-like member by the second mounting member. The spinning facility according to claim 3 or 4.

6. a cooling box disposed below the plate-like member; a sealing member provided between the plate-like member and the cooling box; Further provided with The spinning facility according to any one of claims 1 to 5.

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