EP4606936A1

EP4606936A1 - Spinning equipment

Info

Publication number: EP4606936A1
Application number: EP25152399.9A
Authority: EP
Inventors: Shogo KOJIMA
Original assignee: TMT Machinery Inc
Current assignee: TMT Machinery Inc
Priority date: 2024-02-01
Filing date: 2025-01-17
Publication date: 2025-08-27
Also published as: CN120401032A; JP2025119488A

Abstract

To provide a spinning equipment capable of suitably suppressing heat transfer to a plate-like member disposed below a heating chamber. The spinning equipment comprises a heating chamber (6) to which a spinning pack (7) having a spinneret (8) is attached, a plate-like member (23) fixed to the heating chamber (6), and an insulating structure (20) for suppressing heat transfer to the plate-like member (23). The insulating structure (20) includes insulating materials (21, 22) provided between the heating chamber (6) and the plate-like member (23), and a mounting member (40) for attaching the plate-like member (23) to the heating chamber (6). The mounting member (40) has a first bolt (42) fixed to the heating chamber (6), a second bolt (43) that fixes the plate-like member (23) at a position different from the first bolt (42) in a horizontal direction, and a plate (41) disposed inside the insulating materials (21, 22) and connecting the first bolt (42) and the second bolt (43).

Description

BACKGROUND OF THE INVENTION

FIELD OF THE INVENTION

The present invention relates to a spinning equipment.

DESCRIPTION OF THE BACKGROUND ART

Conventional melt spinning apparatuses are known for producing filament yarn by melt spinning polymers such as polyester. The melt spinning apparatus described in Patent Document 1 spins thermoplastic polymer from a spinneret 1, and has an insulating member 2 below the spinneret 1.

(Prior Art Documents)

(Patent documents)

Patent document 1: Japanese Patent Application Publication No. 2008-138301

(Problems to be solved)

Although the melt spinning apparatus described in Patent Document 1 has an insulating member 2 below the spinneret 1, it is difficult to mention that heat transfer is sufficiently suppressed by merely having the insulating member 2. A spinning equipment generally includes a heating chamber to which a spinning pack having a spinneret is attached, and a plate-like member is provided below this heating chamber to allow other devices such as cooling chambers to be placed. If this plate-like member becomes too hot, it may adversely affect other devices, which is undesirable.

SUMMARY OF THE INVENTION

In view of the above problem, the present invention is to provide a spinning apparatus capable of suitably suppressing heat transfer to a plate-like member provided below the heating chamber.

(Means for Solving Problems)

A first aspect of the present invention is a spinning equipment comprising:

a heating chamber to which a spinning pack having a spinneret is attached;
a plate-like member fixed to the heating chamber; and
an insulating structure for suppressing heat transfer to the plate-like member,

an insulating material provided between the heating chamber and the plate-like member; and
a mounting member for attaching the plate-like member to the heating chamber;

a first mounting member fixed to the heating chamber;
a second mounting member that fixes the plate-like member at a position different from the first mounting member in a horizontal direction; and
a connecting member disposed inside the insulating material and connecting the first mounting member and the second mounting member.

According to the above-described first aspect of the present invention, the insulating structure included in the spinning equipment comprises a mounting member in addition to the insulating material. This mounting member is for attaching the plate-like member to the heating chamber and is composed of multiple components. The heat generated in the heating chamber is transferred to the plate-like member via the mounting member, but the heat transfer path is longer compared to when the plate-like member is directly attached to the heating chamber with a single component (e.g., a bolt). Particularly, by providing the first mounting member and the second mounting member at different positions in the horizontal direction, the distance of the connecting member of the mounting member becomes longer, and the heat transfer path becomes even longer. In other words, by passing through a heat transfer path with high thermal resistance, the temperature of the heat transferred to the plate-like member becomes lower, making it possible to suitably suppress heat transfer to the plate-like member.
Furthermore, it becomes possible to give the mounting member both the function of attaching the plate-like member to the heating chamber and the function of suppressing heat transfer from the heating chamber to the plate-like member, without unnecessarily increasing the thickness of the insulating material. Moreover, if the amount of heat transfer to the plate-like member is large, the amount of heat radiation from the plate-like member also becomes large, which is undesirable from an energy-saving perspective. In this regard, by suppressing the amount of heat transfer to the plate-like member, the amount of heat radiation is also suppressed, contributing to energy saving.
It should be noted that "the plate-like member fixed to the heating chamber" includes not only the configuration where the plate-like member is directly fixed to the heating chamber, but also the configuration where the plate-like member is indirectly fixed to the heating chamber. For example, in the case where a spinneret heater for heating the spinneret is provided, the plate-like member may be fixed to the heating chamber via the spinneret heater.
Also, "the mounting member for attaching the plate-like member to the heating chamber" includes both the configuration where the plate-like member is directly attached to the heating chamber, and the configuration where the plate-like member is indirectly attached to the heating chamber, for example, via a spinneret heater. Similarly, "the first mounting member fixed to the heating chamber" includes both the configuration where the first mounting member is directly fixed to the heating chamber, and the configuration where the first mounting member is indirectly fixed to the heating chamber, for example, via a spinneret heater.
A second aspect of the present invention is the spinning equipment in the above-described first aspect, wherein:
the spinning equipment preferably further comprises a spacer to ensure a thickness of the insulating material.
According to the above-described second aspect of the present invention, by providing a spacer for securing the thickness of the insulating material, when attaching the plate-like member to the heating chamber with the mounting member, it is possible to prevent the insulating material from being crushed and to maintain uniformly the thickness of the insulating material.
A third aspect of the present invention is the spinning equipment in the above-described first or second aspect, wherein:
the insulating material has preferably a first insulating material on the heating chamber side and a second insulating material disposed below the first insulating material, and the connecting member is preferably disposed between the first insulating material and the second insulating material.
According to the above-described third aspect of the present invention, by providing a connecting member between two insulating members, the heat transfer path can be made longer while increasing the freedom of the connecting member, and the thermal resistance of the heat transfer path can be increased. As a result, the temperature of the heat transferred to the plate-like member becomes even lower, making it possible to suitably suppress heat transfer to the plate-like member.
A fourth aspect of the present invention is the spinning equipment in the above-described third aspect, wherein:
the connecting member preferably is plate-shaped, puts the first insulating material between itself and the heating chamber, and is fixed to the heating chamber by the first mounting member.
According to the above-described fourth aspect of the present invention, by making the connecting member plate-shaped, the heat transfer path can be made longer. As a result, the thermal resistance of the heat transfer path can be increased, so the temperature of the heat transferred to the plate-like member becomes even lower, making it possible to suitably suppress heat transfer to the plate-like member.
Note that "the connecting member is plate-shaped, puts the first insulating material between itself and the heating chamber," means that as long as the first insulating material is positioned between the connecting member and the heating chamber, it is not essential for the first insulating material to be in contact with the connecting member, and similarly, it is not essential for the first insulating material to be in contact with the heating chamber.
Also, the description of the connecting member "is fixed to the heating chamber by the first mounting member," includes not only the form where the connecting member is directly fixed to the heating chamber but also the form where the connecting member is indirectly fixed to the heating chamber via, for example, a spinneret heater.
A fifth aspect of the present invention is the spinning equipment in the above-described third or fourth aspect, wherein:
the connecting member preferably puts the second insulating material between itself and the plate-like member, and is preferably fixed to the plate-like member by the second mounting member.
According to the above-described fifth aspect of the present invention, the heat transfer path can be made longer. As a result, the thermal resistance of the heat transfer path can be increased, so the temperature of the heat transferred to the plate-like member becomes even lower, making it possible to suitably suppress heat transfer to the plate-like member.
A sixth aspect of the present invention is the spinning equipment in any one of the above-described first to fifth aspects, preferably further comprising:

a cooling chamber disposed below the plate-like member; and
a sealing member provided between the plate-like member and the cooling chamber.

According to the above-described sixth aspect of the present invention, by suitably suppressing heat transfer to the plate-like member, the amount of heat transfer to the cooling chamber and the sealing member can also be suppressed, making it possible to suppress the decrease in cooling efficiency and also to suppress the deterioration of the sealing member due to heat.
The spinning equipment according to an embodiment of the present invention may consist solely of the configuration in the first aspect described above, or may be any combination of the configuration in the first aspect described above and any of the configurations described in second to sixth aspects described above to the extent that consistency can be achieved. When combining the structure described in the first aspect with the structures described in any of second to sixth aspects, all or part of the structure described in the first aspect and all or part of the structures described in second to sixth aspects may be arbitrarily combined to the extent that consistency can be maintained.

(Advantageous Effects of the Invention)

According to the present invention, it is possible to provide a spinning apparatus capable of suppressing deterioration due to heat of a sealing member that seals a cooling chamber.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an example of a schematic diagram of a spinning equipment according to an embodiment of the present invention.
FIG. 2 is a diagram for explaining the configuration between the heating chamber and the cooling chamber.
FIG. 3 is a plan view of the plate.
FIG. 4 is a diagram illustrating the heat transfer path in the spinning equipment.
FIG. 5 is a diagram illustrating a modified embodiment of the spinning equipment.
FIG. 6 is a diagram showing a modified embodiment of a connecting member.
FIG. 7 is a diagram showing a modified embodiment of a plate.
FIG. 8 is a diagram illustrating the configuration of a modified embodiment in which the spinning equipment is not equipped with a spinneret heater.

DESCRIPTIONS OF EMBODIMENTS OF THE INVENTION

The following is a description of the invention with reference to the drawings.

[Overview of Spinning Equipment]

FIG. 1 is an example of a schematic diagram of a spinning equipment 1 according to an embodiment of the present invention. For convenience of explanation, as shown in FIG. 1, the vertical direction of the paper is defined as the up-and-down direction, and the horizontal direction of the paper is defined as the forward-and-backward direction. Additionally, the depth direction of the paper is defined as the left-and-right direction.
The spinning equipment 1 according to the present embodiment is an equipment for producing yarns Y made of synthetic fiber. The spinning equipment 1 comprises at least a spinning machine 2, a cooling chamber 3, and an oil application device 4.
The spinning machine 2 is configured to spin out a plurality of yarns Y consisting of molten polymer, and has at least an approximately cuboid-shaped heating chamber 6 and a plurality of spinning packs 7 respectively attached to a plurality of pack housings formed in the heating chamber 6.
The plurality of spinning packs 7 are provided along the left-and-right direction. Also, although not shown, the plurality of spinning packs 7 are disposed alternately offset in the forward-and-backward direction. In other words, the plurality of spinning packs 7 are disposed in a staggered pattern when viewed from the up-and-down direction. Polymer is supplied to each spinning pack 7 from an unillustrated polymer tank via the plurality of polymer pipes. The spinning pack 7, in the heating chamber 6, heats the polymer supplied from the polymer tank at a predetermined temperature (for example, 300°C) to generate molten polymer.
At the lower end of each spinning pack 7, a spinneret 8 is disposed. Around the spinneret 8, a spinneret heater 12 is disposed. The spinneret 8 has, for example, the plurality of unillustrated nozzles. The spinning pack 7 extrudes the molten polymer P from the plurality of nozzles of the spinneret 8. The molten polymer P extruded from the plurality of nozzles is cooled in the cooling chamber 3 and becomes a single yarn Y consisting of the plurality of filaments. It is not essential for each spinneret 8 to have the plurality of nozzles; it may have only one nozzle. In this case, the yarn Y is generated as a monofilament yarn.
The cooling chamber 3 has a spinning tube 31 disposed below the spinning machine 2 (heating chamber 6) and a duct 32 connected to the spinning tube 31. The cooling chamber 3 also has an unillustrated compressed air source that supplies cooling air CF to the spinning tube 31 through the duct 32. For example, an annular thread cooling chamber is used as the cooling chamber 3. The spinning tube 31 is, for example, a hollow chamber that extends to up-and-down direction 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 in 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 in the spinning tube 31.
The cooling air CF that flows into the upper space of the spinning tube 31 is straightened as it passes through a filter member 34 composed of, for example, a punching filter and a cooling filter, and then 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.
It should be noted that, as will be described later, the cooling chamber 3 is positioned at close proximity to the heating chamber 6 of the spinning machine 2 with an insulating structure 20 (to be described later) in between. The insulating structure 20 prevents heat from the heating chamber 6 from being transferred to the cooling chamber 3. Additionally, a sealing member 24 is provided between the heating chamber 6 and the spinning tube 31 of the cooling chamber 3. This sealing member 24 prevents leakage of the cooling air CF.
Additionally, the cooling chamber 3 is configured to be capable of vertical movement, for example, by an unillustrated air cylinder. For example, by lowering the cooling chamber 3 from the spinning machine 2 using the unillustrated air cylinder, work can be performed on components such as the spinneret 8 of the spinning machine 2.
Although not shown, a slow cooling section is disposed between the spinning machine 2 and the cooling chamber 3 in the up-and-down direction. The slow cooling section is configured to gradually cool the yarn material extruded from the spinning machine 2 before it is cooled by the cooling chamber 3.
The oil application device 4 is disposed below the cooling chamber 3 and applies oil to the yarn Y spun downward from the corresponding spinning pack 7 among the plurality of spinning packs 7. The yarn Y to which oil has been applied by the oil application device 4 is sent to an unillustrated yarn winding device disposed below the oil application device 4.

(Regarding the configuration between the heating chamber 6 and the cooling chamber 3)

FIG. 2 is a diagram for explaining the configuration between the heating chamber 6 and the cooling chamber 3.
Between the heating chamber 6 and the cooling chamber 3, an upper insulating member 10, a spinneret heater 12, an insulating structure 20, a plate-like member 23, and a sealing member 24 are provided in this order from top to bottom.
The insulating structure 20 is composed of a middle insulating member 21, a lower insulating member 22, and a mounting member 40, which will be described later. The lower insulating member 22 is provided below the middle insulating member 21. Both the aforementioned "middle insulating member 21" and "lower insulating member 22" correspond to the "insulating material" of the present invention. Additionally, the "middle insulating member 21" and "lower insulating member 22" correspond to the "first insulating material" and the "second insulating material" of the present invention, respectively.
The upper insulating member 10, middle insulating member 21, and lower insulating member 22 are composed of, for example, ceramic felt and have a lower thermal conductivity than iron. The upper insulating member 10 is provided between the heating chamber 6 and the spinneret heater 12. The upper insulating member 10 and the spinneret heater 12 are fixed to the heating chamber 6, for example, with bolts 11. The middle insulating member 21 is provided between the spinneret heater 12 and the plate 41 to be described later, and is provided on the heating chamber 6 side compared to the lower insulating member 22. The lower insulating member 22 is provided between the plate 41 to be described later and the plate-like member 23, and is provided on the cooling chamber 3 side compared to the middle insulating member 21. The plate-like member 23 is made of, for example, iron, and functions as a mounting surface for attaching the cooling chamber 3, while interposing the sealing member 24. By fixing the plate-like member 23 to the heating chamber 6 through the spinneret heater 12 by the mounting member 40 to be described later, the middle insulating member 21 and the lower insulating member 22 are also fixed to the heating chamber 6.
The sealing member 24 is made of, for example, silicone rubber and is provided between the plate-like member 23 and the cooling chamber 3. The sealing member 24 is adhered to the upper surface of the cooling chamber 3, and this sealing member 24 prevents leakage of cooling air CF from the cooling chamber 3. The plate-like member 23 and the sealing member 24 are closely fitted in a separable manner. As mentioned above, the cooling chamber 3 is lowered from the spinning machine 2 by an air cylinder. At this time, the sealing member 24 is designed to be separated from the plate-like member 23 and lower together with the cooling chamber 3.
The mounting member 40 is a component that fixes the middle insulating member 21, lower insulating member 22, and plate-like member 23 to the heating chamber 6 through the spinneret 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 through the plate 41. The aforementioned "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.
The plate 41 is plate-shaped and is provided inside the insulating member (middle insulating member 21 and lower insulating member 22), more specifically between the middle insulating member 21 and the lower insulating member 22. It is preferable that the plate 41 is made of a material with lower thermal conductivity than the plate-like member 23 made of iron, such as stainless steel. Also, from the viewpoint of suppressing radiation, the surface of the plate 41 is preferably white or glossy rather than black. The surface along the horizontal direction of the plate 41 has the same size and shape as the middle insulating member 21 and lower insulating member 22, and its thickness is configured to be thinner compared to the middle insulating member 21 and lower insulating member 22.
FIG. 3 is a plan view of the plate 41. As shown in FIG. 3, a plurality of taps 41A are provided near the outer periphery of the plate 41. The second bolt 43 (see FIG. 2) is inserted into this tap 41A. Additionally, a plurality of holes 41B are provided in the plate 41 at locations away from the taps 41A. The first bolt 42 (see FIG. 2) is inserted into this hole 41B. Furthermore, holes 41C corresponding to a plurality of spinning tubes 31, which have a larger diameter than the taps 41A and holes 41B, are provided in the plate 41. By providing the plurality of holes 41C, the heat transfer path in the plate 41 to be described later is designed to be longer. It should be noted that through-holes that penetrate in the up-and-down direction are formed in the middle insulating member 21 and the lower insulating member 22 (both shown in FIG. 2) at positions that overlap with the holes 41C.
A plurality of spacers 45 are provided at a plurality of locations on both the front and back surfaces of the plate 41. These spacers 45 are for ensuring the thickness of the middle insulating member 21 and the lower insulating member 22. Here, explanation will be made about the surface of the plate 41 facing the middle insulating member 21 as the "front surface" and the surface of the plate 41 facing the lower insulating member 22 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, when the first bolt 42 is tightened, it can prevent the middle insulating member 21 from being crushed, and the thickness of the middle insulating member 21 can 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 lower insulating member 22 to be maintained uniformly when the second bolt 43 is tightened.
It should be noted that instead of or in addition to providing spacers 45 on the back surface of the plate 41, spacers having a similar function to the spacers 45 may be provided on the surface of the plate-like member 23 facing the lower insulating member 22. Even in this case, when the second bolt 43 is tightened, it is possible to prevent the lower insulating member 22 from being crushed and to maintain uniformly the thickness of the lower insulating member 22. Furthermore, it is more preferable to provide spacers between the heating chamber 6 and the spinneret heater 12 to maintain uniformly the thickness of the upper insulating member.
The aforementioned spacers 45 are, for convenience, omitted from the illustrations in FIG. 2, the later-described FIG. 4, the later-described FIG. 5, the later-described FIG. 7, and the later-described FIG. 8.
The first bolt 42 fixes the lower insulating member 22, plate 41, and middle insulating member 21 to the heating chamber 6 through the spinneret heater 12. Specifically, holes are provided in the lower insulating member 22, middle insulating member 21, and spinneret heater 12 that align with the hole 41B of the plate 41 and into which the threaded portion of the first bolt 42 is inserted. The first bolt 42 is inserted from below into each hole when the lower insulating member 22, plate 41, middle insulating member 21, spinneret heater 12, and heating chamber 6 are in an overlapped state. The threaded portion of the first bolt 42 engages with the hole in the spinneret heater 12, and the head is disposed in the hole of the lower insulating member 22. As a result, the lower insulating member 22, plate 41, and middle insulating member 21 are integrally fixed to the heating chamber 6 through the spinneret heater 12 by the first bolt 42.
The second bolt 43 fixes the lower insulating member 22 and the plate-like member 23 to the plate 41. Specifically, holes are provided in the lower insulating member 22 and the plate-like member 23 that align with the tap 41A of the plate 41 and into which the threaded portion of the second bolt 43 is inserted. The second bolt 43 is inserted from below into each hole when the lower insulating member 22 and the plate-like member 23 are in an overlapped state. The threaded portion of the second bolt 43 engages with the tap 41A of the plate 41, and the head is disposed in the hole of the plate-like member 23. As a result, the lower insulating member 22 and the plate-like member 23 are integrally fixed to the plate 41 by the second bolt 43. As shown in FIG. 3, in the plate 41, the tap 41A into which the second bolt 43 is inserted is provided at a different position from the hole 41B into which the first bolt 42 is inserted. In other words, the second bolt 43 is provided at a different position from the first bolt 42 in the horizontal direction.
In this way, by fixing the plate 41 and the middle insulating member 21 to the heating chamber 6 via the spinneret heater 12 with the first bolt 42, and fixing the lower insulating member 22 and the plate-like member 23 to the plate 41 with the second bolt 43, the middle insulating member 21, the lower insulating member 22, and the plate-like member 23 are fixed to the heating chamber 6 via the spinneret heater 12.

(Regarding the heat transfer path in the spinning equipment 1)

Hereinafter, explanation will be made about the path of heat transfer (heat transfer path) from the spinneret heater 12 and the heating chamber 6 to the plate-like member 23 in the spinning equipment 1 equipped with the mounting member 40, with reference to FIG. 4. FIG. 4 is a diagram illustrating the heat transfer path in the spinning equipment 1. The arrows in FIG. 4 indicate the direction of heat transfer.
The middle insulating member 21 is disposed below the spinneret heater 12, but as shown by the arrows in FIG. 4, the heat generated by the spinneret heater 12 and the heating chamber 6 is transferred through the first bolt 42 to the plate 41 disposed below the middle insulating member 21. In the plate-shaped plate 41, heat is transferred horizontally from the first bolt 42. The lower insulating member 22 is disposed below the plate 41, but heat is transferred through the second bolt 43 to the plate-like member 23 disposed below the lower insulating member 22, as it is plate-shaped.
In this way, the heat generated by the spinneret heater 12 and the heating chamber 6 is transferred to the plate-like member 23. However, in the spinning equipment 1 of the present embodiment, compared to a structure (hereinafter referred to as the conventional structure) where the plate-like member 23 is directly fixed to the spinneret heater 12 with bolts without providing the plate 41, the heat transfer path becomes longer. In particular, because a plurality of holes 41C are provided in the plate 41, the heat transfer path between the second bolt 43 inserted into the tap 41A and the first bolt 42 inserted into the hole 41B becomes longer by avoiding the holes 41C. As a result, the thermal resistance of the heat transfer path increases, and the amount of heat transfer decreases. In other words, the temperature of the heat transferred to the plate-like member 23 is lower compared to the conventional structure, and it is possible to suppress the deterioration of the sealing member 24 due to heat. According to experimental results, while the temperature of the plate-like member 23 was 190.8°C in the conventional structure, it became 174.6°C with the structure of the present embodiment (see FIG. 2 and FIG. 4), achieving a temperature reduction of more than 15°C.
As described above, in the present embodiment, by providing the mounting member 40 with both the function of attaching the plate-like member 23 to the heating chamber 6 and the function of suppressing heat transfer from the spinneret heater 12 and heating chamber 6 to the plate-like member 23, it becomes possible to suitably suppress heat transfer to the plate-like member 23. Moreover, if the amount of heat transfer from the spinneret heater 12 and heating chamber 6 to the plate-like member 23 is large, the amount of heat radiation from the plate-like member 23 also becomes large, which is undesirable from an energy saving perspective. However, since the amount of heat transfer to the plate-like member 23 is suppressed, the amount of heat radiation is also suppressed, contributing to energy saving.
Additionally, since the amount of heat transfer to the cooling chamber 3 and the sealing member 24 can also be suppressed, it is possible to suppress the decrease in cooling efficiency as well as suppress the deterioration of the sealing member 24 due to heat.

(Modified embodiment)

While the embodiment of the present invention has been described above, the invention is not limited to the aforementioned embodiment and various changes are possible within the scope described in the Claims. For example, in the above-described embodiment, the spinning equipment 1 has two insulating members, but there may be only one 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 insulating member 25.
FIG. 5 is a diagram illustrating a modified embodiment of the spinning equipment. In the modified embodiment of the spinning equipment, between the heating chamber 6 and the cooling chamber 3, an upper insulating member 10, a spinneret heater 12, an insulating structure 20A, a plate-like member 23, and a sealing member 24 are provided in this order from top to bottom.
The insulating structure 20A is composed of an insulating member 25 and a mounting member 40A. In this configuration, the plate-like member 23 and the insulating member 25 are fixed to the heating chamber 6 through the spinneret heater 12 by the mounting member 40A. It should be noted that the aforementioned "insulating member 25" also corresponds to the "insulating material" of the present invention.
The mounting member 40A has a first bolt 42, a second bolt 43, and a connecting member 44. The first bolt 42 fixes the insulating member 25 to the heating chamber 6 through the spinneret heater 12. Holes are provided in the insulating member 25 and the spinneret heater 12 into which the threaded portion of the first bolt 42 is inserted. The first bolt 42 is inserted from below into each hole when the insulating member 25, spinneret heater 12, and heating chamber 6 are in an overlapped state. The threaded portion of the first bolt 42 engages with the hole in the spinneret heater 12, and the head is disposed in the hole of the insulating member 25. As a result, the insulating member 25 is fixed to the heating chamber 6 through the spinneret heater 12 by the first bolt 42.
The second bolt 43 fixes the plate-like member 23 to the insulating member 25. Holes are provided in the insulating member 25 and the plate-like member 23 into which the threaded portion of the second bolt 43 is inserted. The second bolt 43 is inserted from below into each hole when the insulating member 25 and the plate-like member 23 are in an overlapped state. The threaded portion of the second bolt 43 engages with the hole in the insulating member 25, and the head is disposed in the hole of the plate-like member 23. As a result, the plate-like member 23 is fixed to the insulating member 25 by the second bolt 43.
The connecting member 44 connects the first bolt 42 and the second bolt 43. The connecting member 44 is, for example, rod-shaped and is disposed inside the insulating member 25 through a notch cut into the insulating member 25. The connecting member 44 may be plate-shaped or a bent member as long as it can be disposed inside the insulating member 25 and connect the first bolt 42 and the second bolt 43.
It should be noted that 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, for example, between the middle insulating member 21 and the lower insulating member 22 as shown in FIG. 2. By disposing the connecting member 44 between the middle insulating member 21 and the lower insulating member 22 which are configured as separate bodies, the connecting member 44 can be freely disposed, making it possible to extend the heat transfer path.
FIG. 6 is a diagram showing a modified embodiment of the connecting member 44. FIG. 6 is a plan view of the insulating member 25, showing the connecting member 44 disposed inside the insulating member 25 with dotted lines. As shown in FIG. 6, the 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 insulating member 25 is also provided with a through-hole 25C. The connecting member 44 disposed inside this insulating member 25 may preferably be a linear member or, a ring-shaped member disposed to surround the through-hole 25C, so as to overlap with the closest tap 25A and hole 25B. It should be noted that the through-hole 25C is a hole that is provided to overlap with the hole 41C in FIG. 3 when using the plate 41 of the above-described embodiment.
Even with the configuration of this modified embodiment, the heat transfer path becomes longer compared to the conventional structure. As a result, the thermal resistance of the heat transfer path increases, and the amount of heat transfer decreases. In other words, the temperature of the heat transferred to the plate-like member 23 is lower compared to the conventional structure, and it is possible to suppress the deterioration of the sealing member 24 due to heat.
As for the above-described embodiment, the first bolt 42 is engaged with the hole of the spinneret heater 12, and the second bolt 43 is engaged with the tap 41A provided on the plate 41 to fix each layer, but nuts may be used to fix each layer. Additionally, while the first mounting member and second mounting member of the present invention are described as bolts, they may be, for example, screws.
Furthermore, the plate 41 is not limited to the configuration described in the above embodiment. FIG. 7 is a diagram showing a modified embodiment of the plate 41. As shown in FIG. 7, the hole 41B may be an elongated hole shape, and the taps 41A may be densely disposed. Also, although not shown, the holes 41C formed in the plate 41 may also be elongated hole shapes. Moreover, the plate 41 may be subjected to a punching process that forms fine holes other than the holes 41C.
In the above-described embodiment, the plurality of holes 41C are formed in the plate 41, but they may not be formed. Also, the holes 41C need not be circular, but may be rectangular, triangular, or other polygonal shapes. Furthermore, the plate 41 may have notches in its edge part, and any configuration that can extend the heat transfer path is acceptable.
In the above-described embodiment, the spinning equipment 1 was equipped with a spinneret heater 12, but it is not essential for the spinning equipment to be equipped with a spinneret heater 12, and the present invention can also be applied to the spinning equipment without a spinneret heater 12. FIG. 8 is a diagram illustrating the configuration of a modified embodiment in which the spinning equipment is not equipped with a spinneret heater 12, and is a modified embodiment of the figure corresponding to FIG. 2, that is, an enlarged view of the rectangular portion indicated by the dotted line in FIG. 1.
In the modified embodiment shown in FIG. 8, the spinning equipment is not equipped with a spinneret heater 12, and between the heating chamber 6 and the cooling chamber 3, a middle insulating member 21, a lower insulating member 22, a plate-like member 23, and a sealing member 24 are provided in this order from top to bottom. Even with such a configuration, the heat generated in the heating chamber 6 is transferred through the first bolt 42 to the plate 41 disposed below the middle insulating member 21. In the plate-shaped plate 41, heat is transferred horizontally from the first bolt 42. The lower insulating member 22 is disposed below the plate 41, but heat is transferred through the second bolt 43 to the plate-like member 23 disposed below the lower insulating member 22, as it is plate-shaped.
Thus, the heat generated in the heating chamber 6 is transferred to the plate-like member 23. However, in the spinning equipment of the modified example shown in FIG. 8, compared to the conventional structure in which the plate-like member 23 is directly fixed to the heating chamber 6 with bolts without providing the plate 41, the heat transfer path becomes longer, resulting in increased thermal resistance of the heat transfer path and reduced heat transfer amount. 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 becomes lower compared to the conventional structure, and the deterioration of the sealing member 24 due to heat can be suppressed.
The number of first bolts 42 and second bolts 43 provided between the heating chamber 6 and the cooling chamber 3 is not particularly limited.
Moreover, in the above-described embodiment, the plate-like member 23 functions as a mounting surface for attaching the cooling chamber 3 while interposing the sealing member 24. That is, the cooling chamber 3 is attached below the mounting member 23. However, what is attached below the mounting member 23 is not limited to the cooling chamber 3, and other devices or apparatuses different from the cooling chamber 3 may be attached below the mounting member 23.

(Reference Numerals)

1: Spinning equipment
2: Spinning machine
3: Cooling chamber
4: Oil application device
6: Heating chamber
7: Spinning pack
8: Spinneret
20: Insulating structure
20A: Insulating structure
21: Middle insulating member
22: Lower insulating member
23: Plate-like member
24: Sealing member
25: Insulating member
31: Spinning tube
32: Duct
33: Straightening plate
34: Filter member
40: Mounting member
40A: Mounting member
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: Yarn

Claims

A spinning equipment (1), comprising:
a heating chamber (6) to which a spinning pack (7) having a spinneret (8) is attached;

a plate-like member (23) fixed to the heating chamber (6); and

an insulating structure (20, 20A) for suppressing heat transfer to the plate-like member (23),

wherein the insulating structure (20, 20A) includes:
an insulating material (21, 22, 25) provided between the heating chamber (6) and the plate-like member (23); and

a mounting member (40) for attaching the plate-like member (23) to the heating chamber (6);

wherein the mounting member (40) has:
a first mounting member (42) fixed to the heating chamber (6);

a second mounting member (43) that fixes the plate-like member (23) at a position different from the first mounting member (42) in a horizontal direction; and

a connecting member (44) disposed inside the insulating material (21, 22, 25) and connecting the first mounting member (42) and the second mounting member (43).
The spinning equipment (1) as claimed in claim 1, comprising:
a spacer (45) to ensure a thickness of the insulating material (21, 22, 25).
The spinning equipment (1) as claimed in claim 1 or 2, wherein:
the insulating material (21, 22, 25) has a first insulating material (21) on the heating chamber (6) side and a second insulating material (22) disposed below the first insulating material (21), and

the connecting member (44) is disposed between the first insulating material (21) and the second insulating material (22).
The spinning equipment (1) as claimed in claim 3, wherein:
the connecting member (44) is plate-shaped, puts the first insulating material (21) between itself and the heating chamber (6), and is fixed to the heating chamber (6) by the first mounting member (42).
The spinning equipment (1) as claimed in claim 3 or 4, wherein:
the connecting member (44) puts the second insulating material (22) between itself and the plate-like member (23), and is fixed to the plate-like member (23) by the second mounting member (43).
The spinning equipment (1) as claimed in any one of claims 1 to 5, further comprising:
a cooling chamber (3) disposed below the plate-like member (23); and

a sealing member (24) provided between the plate-like member (23) and the cooling chamber (3).