JP2023090643A - Spinning apparatus - Google Patents

Abstract

To decrease power consumption by suppressing emission of heat supplied from a heat source to an outside of an apparatus.SOLUTION: A spinning apparatus 2 according to the present invention includes: a spinning pack 22; a spinning beam 21; a heating medium enclosed space 27 which is provided inside the spinning beam 21 and which allows the spinning pack to be heated; a shielding plate 28 provided to cover an outer surface of the spinning beam 21; and an air layer 29 provided between an inner surface of the shielding plate 28 and an outer surface of the spinning beam 21.SELECTED DRAWING: Figure 3

Description

The present invention relates to a spinning device having a spinning beam with a spin pack inserted therein.

BACKGROUND ART Conventionally, spinning apparatuses for spinning molten polymer at a high temperature downward are known. For example, Patent Document 1 discloses a spinning device (melt spinning device) having a spinning pack (spin pack) provided with a spinneret at the bottom and a spinning beam (spin beam) in which the spinning pack is mounted inside. disclosed. Hot molten polymer is fed into the spin pack and then spun downwards through the lower spinneret. In the spinning apparatus of Patent Document 1, a heat source (heating wire and heat medium) for keeping the temperature of the molten polymer passing through the inside of the spinning pack is arranged inside the spinning beam.

The heat supplied by the heat source moves not only inside the spinning beam, but also outside the spinning beam, i.e. outside the spinning device. If the heat supplied from the heat source is released to the outside of the spinning device, it becomes impossible to supply sufficient heat to the spinning pack. As a result, the efficiency of heating the molten polymer in the spinning pack by the heat source is reduced. For this reason, in a spinning apparatus such as that disclosed in Patent Document 1, the outside of the spinning beam is generally covered with a heat insulating material in order to suppress the heat supplied from the heat source unit from being released to the outside of the spinning apparatus. is.

JP-A-7-11507

Here, the heat insulation performance of a heat insulating material is determined by the thermal conductivity specific to the type of heat insulating material and the thickness of the heat insulating material. In order to suppress the release of heat supplied from the heat source to the outside of the spinning device, it is necessary to secure a sufficient thickness of the heat insulating material covering the spinning beam. In particular, the thermal conductivity of rock wool, which is widely used as a heat insulating material, greatly increases in high temperature regions. Therefore, when rock wool is used as a heat insulating material, it is necessary to increase the thickness of the heat insulating material in a high temperature region for keeping the molten polymer warm.

However, it is necessary to secure a working space for workers and an installation space for other equipment such as a cooling device around the spinning beam. For this reason, the thickness of the heat insulating material covering the spinning beam is limited, and there is a possibility that a sufficient thickness cannot be secured. As a result, the amount of heat released from the spinning beam increases, and the efficiency of heating the molten polymer in the spinning pack with the heat supplied from the heat source decreases. In this case, the heating temperature of the heat source must be increased, leading to an increase in power consumption.

SUMMARY OF THE INVENTION An object of the present invention is to provide a spinning apparatus that achieves reduction in power consumption by suppressing heat supplied from a heat source from being released to the outside of the apparatus.

A spinning apparatus according to the present invention includes a spinning pack provided with a spinneret at a lower end thereof, for downwardly spinning a molten polymer inside from the spinneret, a spinning beam into which the spinning pack is inserted, and the spinning. a heat source arranged inside the beam to heat the spinning pack; a shielding member arranged to cover the outer surface of the spinning beam and shielding radiation from the heat source; and an inner surface of the shielding member. and a sealed gas layer formed between the outer surface of the spinning beam.

According to the present invention, an air layer is formed outside the spinning beam, and the shielding member is arranged. Since the thermal conductivity of the air layer is small, even if the thickness of the air layer is small, heat conduction from the heat source to the outside of the spinning apparatus can be sufficiently suppressed. In addition, the shielding member can suppress transmission of radiant heat generated from the heat source to the outside of the spinning device. As a result, the heat supplied from the heat source can be suppressed from being released to the outside of the spinning apparatus, and power consumption can be reduced.

Moreover, in the spinning apparatus according to the present invention, it is preferable that the air layer is closed.

When the air layer is open to the outside of the apparatus, convection occurs in the air layer due to exchange of air between the air layer and the outside of the apparatus. The occurrence of convection facilitates the movement of heat, leading to a decrease in the insulation performance of the air layer. According to the present invention, since the air layer is hermetically sealed, there is no exchange of air between the air layer and the outside of the apparatus, and convection can be suppressed.

Further, the spinning apparatus according to the present invention further includes a sealing member that is made of a heat insulating material and connects the shielding member and the spinning beam, and the air layer is formed between the shielding member, the spinning beam, and the sealing member. It is preferably sealed by

In the present invention, a sealing member made of a heat insulating material is used to seal the air layer. Therefore, it is possible to suppress the heat supplied from the heat source section from being transmitted through the sealing member and released to the outside of the spinning device.

Further, in the spinning device according to the present invention, it is preferable that the plurality of air layers and the plurality of shielding members are alternately arranged outside the spinning beam.

According to the invention, a plurality of air layers and a plurality of shielding members are alternately arranged outside the spinning beam. That is, a multilayer structure is formed by the air layer and the shielding member. Therefore, the effect of suppressing heat conduction by the gas layer and the effect of suppressing radiant heat by the shielding member can be further enhanced. Thereby, it is possible to further suppress the heat supplied from the heat source from being emitted to the outside of the spinning apparatus.

In addition, the spinning apparatus according to the present invention further comprises a plurality of support members penetrating the air layer and connecting the outer surface of the spinning beam to the shield member and two adjacent shield members, respectively. It is preferable that the two supporting members penetrating the adjacent air layers are connected at different positions of the shielding member arranged between the adjacent air layers.

Any deflection of the shield may result in contact between the outer surface of the spinning beam and the shield, or between two shields. In this case, the heat supplied from the heat source part is transmitted through the shielding member and released to the outside of the spinning device, so that the heat conduction by the air layer cannot be appropriately suppressed. Therefore, in the present invention, a plurality of supporting members are provided in order to suppress contact between the spinning beam and the shielding member, and between the two shielding members. In addition, when two support members penetrating air layers adjacent to each other are connected at the same position of the shielding member disposed between the air layers adjacent to each other, heat is transferred between the two support members. Cheap. Then, the effect of suppressing heat conduction by the gas layer is reduced. In the present invention, the two support members penetrating the air layers adjacent to each other are connected at different positions of the shielding member disposed between the air layers adjacent to each other. For this reason, compared to the case where two support members penetrating air layers adjacent to each other are connected at the same position of the shield member disposed between the air layers adjacent to each other, the heat transmitted through the support members is reduced. A heat conduction path can be lengthened, and reduction in the effect of suppressing heat conduction by the air layer can be suppressed. As a result, it is possible to suppress the heat supplied from the heat source from being released to the outside of the spinning device while suppressing contact between the spinning beam and the shielding member, and between the two shielding members.

Further, in the spinning apparatus according to the present invention, it is preferable that the air layer is an air layer, and the layer thickness of the air layer is 1 mm or more and less than 10 mm.

The greater the thickness of the air layer, the greater the effect of suppressing heat conduction. Also, if the thickness of the air layer is too small, the spinning beam and the shielding member may come into contact with each other. As a result, the heat from the heat source is easily transmitted through the shielding member and released to the outside of the spinning device. According to the present invention, the thickness of the air layer is set to a size that makes it difficult for the spinning beam and the shielding member to come into contact with each other, ensures sufficient heat insulation performance, and suppresses convection in the air layer. As a result, the heat supplied from the heat source can be reliably suppressed by being emitted to the outside of the spinning device.

Further, in the spinning device according to the present invention, it is preferable that a heat insulating member is arranged outside the shielding member.

In the present invention, after the amount of heat transferred from the heat source to the outside of the spinning apparatus is greatly suppressed by the air layer and the shielding member, the heat insulation can be further reliably performed by the heat insulating member. Therefore, it is possible to more efficiently suppress the heat supplied from the heat source from being released to the outside of the spinning device. Moreover, even when the thickness of the heat insulating member cannot be sufficiently ensured, the heat insulating performance of the heat insulating member can be sufficiently obtained.

Also, the spinning apparatus according to the present invention preferably further comprises a covering member that flattens the outer surface of the spinning beam by covering uneven portions formed on the outer surface of the spinning beam.

The outer surface of the outer wall of the spin beam may be rough due to the presence of protruding parts, gaps, and the like. When the shielding member is arranged so as to cover the outer surface of the outer wall of the spinning beam having uneven portions, the thickness of the air layer formed between the outer surface of the outer wall of the spinning beam and the shielding member varies depending on the location. Become. As a result, the heat insulation performance of the air layer varies depending on the location, and sufficient heat insulation performance cannot be exhibited in areas where the layer thickness is small. According to the present invention, the irregularities formed on the outer surface of the outer wall of the spinning beam can be filled with the coating member to make the outer surface of the spinning beam flat. Therefore, even if an uneven portion is formed on the outer surface of the spinning beam, the thickness of the air layer formed between the outer surface of the outer wall of the spinning beam and the shielding member can be made uniform. It is possible to sufficiently secure the thermal insulation performance of the layer.

Moreover, in the spinning apparatus according to the present invention, the shielding member preferably covers at least the entire outer surface of the spinning beam, excluding the lower surface of the spinning beam.

According to the invention, the outer surface of the spinning beam is extensively covered by the air layer and the shielding member. Therefore, heat conduction from the heat source to the outside of the spinning apparatus can be suppressed relatively uniformly over the entire outer surface of the spinning beam. Thereby, it is possible to suppress variations in the temperature outside the spinning apparatus due to the heat from the heat source. As a result, temperature variations in the vicinity of the spinneret can also be suppressed, and adverse effects on the quality of the yarn spun from the spinneret due to temperature variations can be suppressed.

Moreover, in the spinning apparatus of the present invention, it is preferable that the shielding member covers at least a portion of the lower surface of the spinning beam, excluding the lower portion of the spinning pack.

According to the invention, the lower surface of the spinning beam is covered by the air layer and the shielding member. Therefore, it is possible to particularly prevent the heat from the heat source from being transferred to the lower side of the spinning device. As a result, it is possible to further suppress temperature variations in the vicinity of the spinneret, which is the lower side of the spinning device. As a result, it is possible to suppress adverse effects on the quality of the yarn spun from the spinneret due to variations in temperature.

1 is a side view of a spinning production facility according to this embodiment; FIG. 1 is a perspective view of a spinning device according to this embodiment; FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2; FIG. It is a figure which shows the heat insulation performance of an Example and a comparative example. FIG. 5 is a cross-sectional view of a spinning device according to a modified example; FIG. 5 is a cross-sectional view of a spinning device according to another modification; It is the figure which looked at the spinning beam which concerns on this embodiment from the lower side.

(Overall configuration of spinning production facility 1)
Preferred embodiments 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 including a spinning device 2 according to this embodiment. FIG. 2 is a perspective view of the spinning device 2. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 1 is the vertical direction of the spinning production equipment 1, and the horizontal direction of FIG. 1 is the front-rear direction of the spinning production equipment 1. Also, the direction perpendicular to the paper surface of FIG. 1 is defined as the left-right direction, and the front side of the paper surface is defined as the right side.

The spinning production facility 1 includes a spinning device 2 and a spinning take-up device 3, as shown in FIG. The spinning device 2 is a device for spinning the molten polymer as a yarn Y downward. Details of the spinning device 2 will be described later. The spinning take-up device 3 is a device for taking the yarn Y spun from the spinning device 2, and includes a cooling device 4, a plurality of oil nozzles 5, a plurality of guides 6, a comb-tooth guide 7, and a godet roller 8. , 9 and a winding device 10 .

The cooling device 4 is arranged below the spinning device 2 . The cooling device 4 is a device that cools the yarns Y by supplying cooling air to the plurality of yarns Y spun from the spinning device 2 . The cooling device 4 has a substantially cylindrical cooling cylinder (not shown) that is open at both ends in the vertical direction. Inside a cooling cylinder (not shown), a plurality of yarns Y can run downward, and the cooling device 4 supplies cooling air to the plurality of yarns Y running inside the cooling cylinder.

A plurality of oil nozzles 5 are arranged below the cooling device 4 and apply oil to each of the plurality of yarns Y cooled by the cooling device 4 . A plurality of guides 6 are arranged at equal intervals in the left-right direction under each of the plurality of oil nozzles 5, and individually guide the plurality of yarns Y to which the oil is applied.

One comb-tooth guide 7 is arranged substantially directly below the center of the plurality of guides 6 in the left-right direction and the front-rear direction. A plurality of yarns Y guided by a plurality of guides 6 run downward in a comb-teeth guide 7 while being aligned in the left-right direction at equal intervals.

As shown in FIG. 1, the godet rollers 8 and 9 are arranged on the downstream side of the comb guide 7 in the yarn traveling direction, and are rotationally driven by a motor (not shown). A plurality of yarns Y spun from the spinning device 2 pass through a cooling device 4, an oil nozzle 5, a guide guide 6, and a comb-tooth guide 7, and are wound around godet rollers 8 and 9 in this order. 9 to the winding device 10 .

The winding device 10 forms a plurality of packages P by winding a plurality of yarns Y around a plurality of bobbins B held by a bobbin holder 11 . The winding device 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 portion is cantilevered by a turret 13 provided on the machine base 12 . The bobbin holder 11 can hold a plurality of bobbins B side by side in the axial direction. For example, when eight yarns Y are fed from the spinning device 2, the eight yarns Y are wound on eight bobbins B. As shown in FIG.

The winding device 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 15 extending in the front-rear direction is provided on the upper portion of the support frame 14 . The guide support 15 is provided with a plurality of support guides 16 aligned in the front-rear direction corresponding to the plurality of bobbins B held by the bobbin holder 11 . Further, the support frame 14 is provided with a plurality of traverse devices 17 aligned in the front-rear direction corresponding to the plurality of bobbins B held by the bobbin holder 11 . Each traverse device 17 traverses the yarn Y in the front-rear direction around the corresponding support guide 16 .

The winding device 10 has a contact roller 18 rotatably supported by a support frame 14 . A contact roller 18 is provided below the support frame 14 . The operation of each part of the winding device 10 is controlled by a control device (not shown). The winding device 10 winds a plurality of yarns Y traversed by a plurality of traverse devices 17 onto a plurality of new bobbins mounted on the upper bobbin holder 11 of the two bobbin holders 11 . Start for B. During the winding of the yarn Y, the contact roller 18 is driven up and down and/or the turret 13 is driven to rotate as appropriate, thereby forming a plurality of packages P while corresponding to an increase in the diameter of the packages P.

(Spinning device 2)
Next, a detailed configuration of the spinning device 2 will be described below with reference to FIGS. 2 and 3. FIG. The spinning device 2 has a spinning beam 21 , a plurality of spinning packs 22 , a polymer tank 23 and a plurality of polymer pipes 24 .

As shown in FIG. 2, the spinning beam 21 has a substantially rectangular parallelepiped shape extending in the left-right direction. In FIG. 2, illustration of the polymer tank 23, the polymer pipe 24, the shield plate 28 and the air layer 29, which will be described later, is omitted. Further, as shown in FIG. 3, the spinning beam 21 has a substantially rectangular cross-sectional shape perpendicular to the left-right direction. Inside the spinning beam 21, cylindrical storage spaces 26 are formed so as to be arranged in a grid pattern along the left-right direction. The lower surface of the accommodation space 26 is open, and the spinning pack 22 is configured to be inserted into the accommodation space 26 through this opening. That is, as shown in FIG. 2, the spinning packs 22 inserted into the accommodation space 26 inside the spinning beam 21 are arranged in a zigzag pattern along the horizontal direction. A spinneret 25 is provided at the lower end of the spinning pack 22 . A plurality of through holes (not shown) are formed in the spinneret 25, and the molten polymer is extruded downward from the plurality of through holes. The molten polymer is cooled and solidified into the yarn Y immediately after being extruded from the plurality of through holes of the spinneret 25 . Thus, the spinning device 2 spins the molten polymer as the yarn Y downward.

The polymer tank 23, as shown in FIG. 3, stores high-temperature molten polymer inside. The polymer tank 23 and each spinning pack 22 are connected by a polymer pipe 24 . The molten polymer stored in the polymer tank 23 is pressure-fed to each spinning pack 22 through the polymer pipe 24 by a gear pump (not shown). The molten polymer passing through the spinning pack 22 is pushed downward through the plurality of through holes of the spinneret 25 .

A heat medium enclosing space 27 is formed between the outer wall 21 a of the spinning beam 21 and the inner portion of the spinning beam 21 . A steam heating medium heated to a high temperature by a heater (not shown) is enclosed in the heating medium enclosed space 27 . The steam heat medium is sent to the heat medium enclosed space 27 through a pipe (not shown). The plurality of spinning packs 22 are heated to a temperature near the steam heat medium temperature by the heat medium enclosing space 27 in which the steam heat medium is enclosed. In this embodiment, the heat medium enclosed space 27 in which the steam heat medium is enclosed corresponds to the heat source section of the present invention.

Furthermore, the spinning device 2 has three shielding plates 28 (shielding members of the present invention) and three air layers 29 . The shielding plate 28 is arranged to cover the outer surface of the outer wall 21 a of the spinning beam 21 . The shielding plate 28 is arranged so as to cover the entire outer surface of the outer wall 21a, excluding the lower portion of the spinning pack 22, without gaps. The portion of shield plate 28 that covers the lower surface of spin beam 21 will now be described in more detail. As shown in FIG. 7, the shielding plate 28 is arranged so as to cover the entire lower surface of the spinning beam 21 without gaps, excluding the area immediately below the spinning pack 22 and its vicinity. The shielding plate 28 has a substantially rectangular cross-sectional shape perpendicular to the left-right direction along the substantially rectangular spinning beam 21 . More specifically, the shielding plate 28 covers the entire upper surface, left and right surfaces, and front and rear surfaces of the outer wall 21 a of the spinning beam 21 . The shielding plate 28 covers the lower surface of the outer wall 21 a of the spinning beam 21 excluding the area below the spinning pack 22 . In this embodiment, the outermost shielding plate 28 has a vertical dimension of 500 mm, a longitudinal dimension of 500 mm, and a lateral dimension of 1500 mm. The polymer pipe 24 described above passes through three shielding plates 28 on the upper side of the spinning beam 21, and the gap between the shielding plate 28 and the polymer pipe 24 is sealed with an adhesive or the like having heat insulating properties. there is

The shield plate 28 is a member that shields radiation from the heat medium enclosure space 27 in which the steam heat medium is enclosed. In this embodiment, the material of the shield plate 28 is aluminum. The shielding plate 28 may also be made of copper or the like. The shielding plate 28 is arranged at a low temperature portion such as the outside of the spinning beam 21 with the intention of reflecting and suppressing the radiant heat from the high temperature portion such as the heat medium enclosure space 27 in which the steam heat medium is enclosed. It is a member. Examples of materials for the shielding plate 28 include, but are not limited to, those having a reflectance of 0.01 to 0.80 for reflecting radiation. Further, the surface of the shielding plate 28 on the side of the heat medium enclosing space 27 is preferably polished or painted with a high reflectance paint. Moreover, in this embodiment, the plate thickness of the shielding plate 28 is 1 mm.

An air layer 29 is formed between the outer surface of the outer wall 21 a of the spinning beam 21 and the shielding plate 28 and between the two shielding plates 28 . That is, three air layers 29 and three shielding plates are alternately arranged outside the spinning beam 21 . The layer thickness of the air layer 29 is preferably 1 mm or more and less than 10 mm. In this embodiment, the layer thickness of each of the three air layers 29 is 8 mm.

The spinning device 2 of this embodiment also has a sealing member 30 that connects the ends of the three shielding plates 28 and the outer wall 21 a of the spinning beam 21 . The sealing member 30 is for sealing the air layer 29 . The air layer 29 of the first layer is closed by the shielding plate 28 of the first layer, the outer wall 21a of the spinning beam 21, and the sealing member 30. be done. The second layer air layer 29 is sealed by the first layer shielding plate 28 , the second layer shielding plate 28 and the sealing member 30 . The third layer air layer 29 is sealed by the second layer shielding plate 28 , the third layer shielding plate 28 and the sealing member 30 . Moreover, the sealing member 30 is made of, for example, a heat insulating material. Examples of the heat insulating material forming the sealing member 30 include hard ceramics.

The spinning device 2 also has a plurality of support members 31 . A plurality of support members 31 pass through the air layer 29, the outer surface of the outer wall 21a of the spinning beam 21 and the shielding plate 28, the first layer shielding plate 28 and the second layer shielding plate 28, and the second layer The shielding plate 28 and the third layer shielding plate 28 are connected. The two support members 31 penetrating the air layers 29 adjacent to each other are connected at different positions of the shield plate 28 arranged between the air layers 29 adjacent to each other. Specifically, the two support members 31 penetrating the first air layer 29 and the two support members 31 penetrating the second air layer 29 are located at different positions on the first shielding plate 28 . connected with The two supporting members 31 penetrating the second air layer 29 and the two supporting members 31 penetrating the third air layer 29 are connected at different positions of the second shielding plate 28 . ing. More specifically, two support members 31 penetrating the first layer air layer 29 connect the first layer shielding plate 28 and the outer wall 21 a in front of the spinning beam 21 . Two support members 31 passing through the second air layer 29 connect the second shielding plate 28 and the first shielding plate 28 behind the spinning beam 21 . Two support members 31 penetrating the third air layer 29 connect the third shielding plate 28 and the second shielding plate 28 in front of the spinning beam 21 . Thus, the two support members 31 passing through the adjacent air layers 29 are preferably arranged on opposite sides of the spinning beam 21 . Note that the two support members 31 penetrating the air layers 29 adjacent to each other are not limited to the opposing sides of the spinning beam 21, and are arranged outside the adjacent surfaces (for example, the front surface and the upper surface of the spinning beam 21). good too.

In this embodiment, six support members 31 are arranged for one spinning pack 22 . More specifically, two supporting members 31 connecting the outer surface of the outer wall 21a of the spinning beam 21 and the first layer shielding plate 28, and the first layer shielding plate 28 and the second layer shielding plate 28 are connected. The two support members 31 connecting the second and third layer shielding plates 28 and the two supporting members 31 connecting the shielding plates 28 of the second layer and the shielding plate 28 of the third layer are provided by the number of the plurality of spinning packs 22 along the left-right direction. are placed.

In this embodiment, the support member 31 is a heat insulating material such as hard ceramic. Further, the support member 31 may be cylindrical or pipe-shaped.

(Example)
Next, the heat insulation performance was compared between the spinning apparatuses of the examples and the comparative examples. However, in order to simplify the experiment, the shielding plate 28 was arranged so as to cover the entire surface including the lower surface of the spinning beam in the experimental apparatus of Examples and Comparative Examples. Also, the experimental apparatus is approximately cuboid in shape. Moreover, the experimental apparatus uses a rubber heater in which a heating wire is sandwiched between silicon rubbers as a heat source, instead of the heating medium enclosing space 27 which encloses a steam heating medium.

In the experimental device of the example, the outside of the spinning beam 21 is covered with a three-layer structure consisting of a shielding plate 28 and an air layer 29 . In the experimental device according to the comparative example, the outside of the spinning beam 21 is covered with a heat insulating material made of rock wool.

For the experimental devices of Examples and Comparative Examples, the temperature of the rubber heater was set to 300 degrees, and changes over time in the surface temperature of the device were measured. The measurement results are shown in FIG. In FIG. 4, the surface temperature of the experimental device of the comparative example is T1, and the surface temperature of the experimental device of the example is T2.

As shown in FIG. 4, from the start of the measurement, the surface temperature of the experimental device of Example was lower than the surface temperature of the experimental device of Comparative Example. After 150 minutes, the surface temperature of the experimental device of Example was 10 degrees lower than the surface temperature of the experimental device of Comparative Example. For this reason, compared to the case where the rock wool heat insulating material is arranged outside the spinning beam 21, it is better to provide a layer structure consisting of the shielding plate 28 and the air layer 29 from the rubber heater, which is the heat source, to the outside of the apparatus. It can be seen that the heat dissipation of can be further suppressed. From the above test results, by covering the outside of the spinning beam 21 with the shielding plate 28 and the air layer 29, heat radiation from the heat source to the outside of the spinning apparatus is suppressed more than in the case of using a conventional heat insulating material. It can be said that

(effect)
The spinning apparatus 2 of this embodiment includes a spinning beam 21, a heat medium enclosing space 27 arranged inside the spinning beam 21 to heat the spinning pack 22, and a shield arranged to cover the outer surface of the spinning beam 21. It has a plate 28 and an air layer 29 formed between the inner surface of the shield plate 28 and the outer surface of the spinning beam 21 . According to the above configuration, the air layer 29 is formed outside the spinning beam 21 and the shielding plate 28 is arranged. Since the thermal conductivity of the air layer 29 is small, even if the thickness of the air layer 29 is small, it is possible to sufficiently suppress heat conduction from the heat medium enclosing space 27 to the outside of the spinning device 2 . In addition, the radiation heat generated from the heat medium enclosed space 27 can be suppressed from being transferred to the outside of the spinning device 2 by the shielding plate 28 . As a result, the heat supplied from the heat medium enclosed space 27 can be suppressed from being released to the outside of the spinning device 2, and power consumption can be reduced. Moreover, in the configuration of the present embodiment, heat radiation to the outside of the spinning device 2 can be suppressed, so deterioration of the working environment for workers around the spinning device 2 can be suppressed.

The spinning device 2 of this embodiment further has a sealing member 30 which is made of a heat insulating material and connects the shielding plate 28 and the spinning beam 21 . The air layer 29 is closed by the shielding plate 28 , the spinning beam 21 and the sealing member 30 . In this configuration, a sealing member 30 made of a heat insulating material is used to seal the air layer 29 . Therefore, it is possible to suppress the heat supplied from the heat medium enclosed space 27 from being transferred to the sealing member 30 and released to the outside of the spinning device 2 .

In the spinning device 2 of this embodiment, a plurality of air layers 29 and a plurality of shielding plates 28 are alternately arranged outside the spinning beam 21 . According to this, a plurality of air layers 29 and a plurality of shielding plates 28 are alternately arranged outside the spinning beam 21 . That is, a multilayer structure is formed by the air layer 29 and the shielding plate 28 . Therefore, the effect of suppressing heat conduction by the air layer 29 and the effect of suppressing radiant heat by the shield plate 28 can be further enhanced. Thereby, it is possible to further suppress the heat supplied from the heat medium enclosed space 27 from being released to the outside of the spinning device 2 .

The spinning device 2 of this embodiment further has a plurality of supporting members 31 that penetrate the air layer 29 and connect the outer surface of the spinning beam 21 and the shielding plate 28 and two adjacent shielding plates 28 respectively. The two support members 31 penetrating the air layers 29 adjacent to each other are connected at different positions of the shield plate 28 arranged between the air layers 29 adjacent to each other.

If the shielding plate 28 flexes, the outer surface of the spinning beam 21 and the shielding plate 28 or two shielding plates 28 may come into contact with each other. In this case, the heat supplied from the heat medium enclosed space 27 is transmitted through the shielding plate 28 and released to the outside of the spinning device 2, so that the air layer 29 cannot appropriately suppress the heat conduction. Therefore, in the present embodiment, a plurality of support members 31 are provided to prevent contact between the spinning beam 21 and the shielding plate 28 and between the two shielding plates 28 . In addition, when two support members 31 penetrating air layers 29 adjacent to each other are connected at the same position of the shielding plate 28 disposed between the air layers 29 adjacent to each other, the two support members 31 The heat is easy to move. As a result, the effect of suppressing heat conduction by the air layer 29 is reduced. In this embodiment, the two support members 31 penetrating the air layers 29 adjacent to each other are connected at different positions of the shield plate 28 arranged between the air layers 29 adjacent to each other. Therefore, compared to the case where the two support members 31 penetrating the air layers 29 adjacent to each other are connected at the same position of the shield plate 28 arranged between the air layers 29 adjacent to each other, the support member It is possible to lengthen the heat conduction path of the heat transmitted through the air layer 31 and suppress the reduction in the effect of suppressing the heat conduction by the air layer 29 . This prevents the heat supplied from the heat medium enclosed space 27 from being released to the outside of the spinning device 2 while suppressing the contact between the spinning beam 21 and the shielding plate 28 and between the two shielding plates 28 . can be suppressed.

In the spinning device 2 of the present embodiment, the layer thickness of the air layer 29 is 1 mm or more and less than 10 mm. The greater the thickness of the air layer 29, the greater the effect of suppressing heat conduction. Also, if the thickness of the air layer 29 is too small, the spinning beam 21 and the shielding plate 28 or the adjacent shielding plates 28 may come into contact with each other. As a result, the heat from the heat medium enclosed space 27 is transmitted through the shielding plate 28 and is easily released to the outside of the spinning device 2 . According to the present embodiment, the thickness of the air layer 29 is such that the spinning beam 21 and the shielding plate 28 and the shielding plates 28 do not easily come into contact with each other, sufficient heat insulation performance can be ensured, and convection in the air layer 29 is suppressed. is as large as possible. As a result, the heat supplied from the heat medium enclosed space 27 can be reliably suppressed by being emitted to the outside of the spinning device 2 .

In the spinning device 2 of the present embodiment, the shield plate 28 covers at least the entire outer surface of the spinning beam 21 excluding the lower surface of the spinning beam 21 . According to this, the outer surface of the spinning beam 21 is extensively covered by the air layer 29 and the shielding plate 28 . Therefore, heat conduction from the heat medium enclosed space 27 to the outside of the spinning device 2 can be suppressed relatively uniformly over the entire outer surface of the spinning beam 21 . As a result, variations in the temperature outside the spinning device 2 due to the heat from the heat medium enclosed space 27 can be suppressed. As a result, temperature variations in the vicinity of the spinneret 25 can be suppressed, and adverse effects on the quality of the yarn Y spun from the spinneret 25 due to temperature variations can be suppressed.

In the spinning device 2 of the present embodiment, the shielding plate 28 covers at least a part of the lower surface of the spinning beam 21 excluding the lower part of the spinning pack 22 . According to this, the lower surface of the spinning beam 21 is covered by the air layer 29 and the shielding plate 28 . Therefore, it is possible to particularly suppress the heat transfer from the heat medium enclosed space 27 to the lower side of the spinning device 2 . As a result, temperature variations in the vicinity of the spinneret 25 on the lower side of the spinning device 2 can be further suppressed. As a result, it is possible to suppress adverse effects on the quality of the yarn Y spun from the spinneret 25 due to variations in temperature.

In particular, in the spinning device 2 of the present embodiment, the shielding plate 28 covers the entire side surface of the outer wall 21a and the entire lower surface of the spinning beam 21 excluding the area immediately below the spinning pack 22 and its vicinity without any gap. placed to cover. As a result, it is possible to more effectively suppress variations in the temperature outside the spinning device 2 due to the heat from the heat medium enclosed space 27 .

(Modification)
Modifications obtained by modifying the above embodiment will be described below. However, components having the same configurations as those of the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

In the present invention, a heat insulating member 41 made of a heat insulating material may be arranged outside the shielding plate 28 . For example, as shown in FIG. 5, the spinning device 102 according to the modification has a heat insulating member 41 arranged outside the outermost shielding plate 28 . The heat insulating member 41 has a substantially rectangular shape along the substantially rectangular spinning beam 21 when viewed in the lateral direction. The heat insulating member 41 extends below the spinning beam 21 , and the end of the insulating member 41 is positioned below the spinning beam 21 but not below the spin pack 22 . Examples of the material of the heat insulating member 41 include rock wool. In this configuration, after the air layer 29 and the shielding plate 28 greatly suppress the amount of heat transferred from the heat medium enclosing space 27 to the outside of the spinning device 102, the heat insulating member 41 can more reliably insulate. Therefore, the heat supplied from the heat medium enclosed space 27 can be more efficiently suppressed from being released to the outside of the spinning device 102 . Moreover, even when the thickness of the heat insulating member 41 cannot be sufficiently ensured, the heat insulating performance of the heat insulating member 41 can be sufficiently obtained.

The spinning device 2 of the above embodiment has a shielding plate 28 made of aluminum. However, the spinning device 2 may be configured to have an aluminum sheet as a shielding member. In this case, for example, the spinning device 2 has a frame member installed to surround the spinning beam 21, and an aluminum sheet attached to the frame and arranged to cover the outer surface of the spinning beam 21. The framework member is connected to the sealing member 30 and the outer wall 21a of the spinning beam 21. As shown in FIG. The aluminum sheets attached to the framework members are arranged so as to cover the entire outer surface of the outer wall 21a of the spinning beam 21, excluding the lower portion of the spinning pack 22, without gaps. In addition, aluminum sheets are attached to the frame members so as to form three layers on the outside of the spinning beam 21, for example. Air layers are formed between the outer surface of the outer wall 21a of the spinning beam 21 and the aluminum sheet and between the two aluminum sheets. That is, three layers of aluminum sheets and three layers of air layers as shielding members are alternately arranged outside the spinning beam 21 .

In the above embodiment, the outer surface of the outer wall 21a of the spinning beam 21 may be uneven due to the presence of projecting parts, gaps, and the like. In this case, it is preferable to fill uneven portions formed on the outer surface of the outer wall 21a of the spinning beam 21 with an arbitrary covering member to flatten it. For example, as shown in FIG. 6, the spinning device 2 has a concave portion 51 and a convex portion 52 formed on the outer surface of the outer wall 21a of the spinning beam 21. ) to flatten the outer surface of the outer wall 21 a of the spinning beam 21 . A heat insulating material is preferably used as the covering member 50 . However, the covering member 50 is not limited to the heat insulating material, and may be the same member as the outer wall 21a of the spinning beam 21, for example. When the shielding plate 28 is arranged to cover the outer surface of the outer wall 21a of the spinning beam 21 on which the concave portion 51 and the convex portion 52 are formed, the outer surface of the outer wall 21a of the spinning beam 21 and the shielding plate 28 are formed. The layer thickness of the formed air layer 29 will differ depending on the location. As a result, the heat insulation performance of the air layer 29 varies depending on the location, and sufficient heat insulation performance cannot be exhibited in areas where the layer thickness is small. In the case of a configuration in which the covering member 50 is arranged to fill and flatten the concave portions 51 and the convex portions 52 formed on the outer surface of the outer wall 21a of the spinning beam 21, the outer surface of the outer wall 21a of the spinning beam 21 and the shielding plate 28 are arranged. The layer thickness of the air layer 29 formed between them can be made uniform, and the heat insulation performance of the air layer 29 can be sufficiently ensured.

In the above embodiment, the spinning device 2 has a sealing member 30 connecting the ends of the three shielding plates 28 and the outer wall 21 a of the spinning beam 21 . The air layer 29 is sealed by the shielding plate 28 , the outer wall 21 a of the spinning beam 21 and the sealing member 30 . However, the spinning device 2 may be configured without the sealing member 30 . In this case, for example, the ends of the shielding plate 28 may be bent, and the ends of the shielding plate 28 and the spinning beam 21 may be connected to seal the air layer 29 . Also, the sealing member 30 may connect the portion of the shielding plate 28 that is not the end portion and the outer wall 21 a of the spinning beam 21 .

In the above embodiment, the sealing member 30 is a member that connects the ends of the three shielding plates 28 and the outer wall 21 a of the spinning beam 21 . However, the sealing member 30 connects the first layer shielding plate 28 and the outer wall 21a of the spinning beam 21, and the second layer shielding plate 28 and the first layer shielding plate. A second sealing member and a third sealing member 30 connecting the third layer shielding plate 28 and the second layer shielding plate may be included. In this case, the first air layer 29 is sealed by the first shielding plate 28 , the outer wall 21 a of the spinning beam 21 and the first sealing member 30 . The second layer air layer 29 is sealed by the second layer shielding plate 28 , the first layer shielding plate 28 and the second sealing member 30 . The third layer air layer 29 is sealed by the third layer shielding plate 28 , the second layer shielding plate 28 and the third sealing member 30 . Also, the sealing member 30 may not connect the shielding plate 28 of the first layer and the outer wall 21a of the spinning beam 21 . In this case, the first air layer 29 is not sealed.

In the above-described embodiment, the layer structure composed of the shielding plate 28 and the air layer 29 is arranged so as to cover the entire outer surface of the outer wall 21a of the spinning beam 21 except for the lower portion of the spinning pack 22 without gaps. That is, the shielding plate 28 is arranged so as to cover the entire side surface of the outer wall 21a and the entire lower surface of the spinning beam 21 excluding the area immediately below the spinning pack 22 and its vicinity. However, even if the layer structure consisting of the shielding plate 28 and the air layer 29 is arranged to cover only a portion of the outer surface of the outer wall 21a of the spinning beam 21, excluding the lower portion of the spinning pack 22. good. That is, the shielding plate 28 is arranged so as to cover the entire side surface of the outer wall 21a and the entire lower surface of the spinning beam 21 excluding the area immediately below the spinning pack 22 and its vicinity. For example, the shield plate 28 may partially cover the entire side surface of the outer wall 21a. Also, the shielding plate 28 may partially cover the entire lower surface of the spinning beam 21 except for the area immediately below the spinning pack 22 and its vicinity.

In the above embodiment, one sealing member 30 connects the ends of the three shielding plates 28 and the outer wall 21 a of the spinning beam 21 . However, one sealing member 30 may connect only the end of the shielding plate 28 of the first layer and the outer wall 21a of the spinning beam 21 . In this case, another sealing member 30 connects the outer surface of the first layer of shielding plate 28 and the edge of the second layer of shielding plate 28, and another sealing member 30 connects the second layer of shielding plate The outer surface of 28 and the edge of the shielding plate 28 of the third layer may be connected.

The heat source part of the present invention is not limited to the heat medium enclosed space 27 in which the steam heat medium is enclosed, and may be, for example, a heater. Moreover, in the present invention, the support member 31 may be a metal member such as iron.

In the above embodiment, six support members 31 are arranged for one spinning pack 22 . However, seven or more support members 31 may be arranged per one spinning pack 22, and five or less support members 31 may be arranged. In addition, any number of support members 31 may be arranged along the left-right direction for a number smaller than the number of the plurality of spinning packs 22, or arranged for a number larger than the number of the plurality of spinning packs 22. may be

The air layer is the air layer 29 in the above embodiment. However, the air layer is not limited to the air layer. For example, the gas layer may consist of nitrogen gas. Further, in the above-described embodiment, three layers of the layer structure including the air layer 29 and the shielding plate 28 are arranged outside the spinning beam 21 . However, on the outside of the spinning beam 21, the layer structure of the air layer 29 and the shield plate 28 may be arranged in two layers, or may be arranged in four or more layers. Furthermore, on the outside of the spinning beam 21, a single layer structure consisting of one air layer 29 and one shielding plate 28 can be arranged.

In the above embodiment, the layer thickness of the air layer 29 is configured to be 1 mm or more and less than 10 mm. However, the layer thickness of the air layer 29 may be greater than 0 and less than 1 mm, or may be 10 mm or more.

1 Spinning Production Equipment 2 Spinning Device 21 Spinning Beam 21a Outer Wall 22 Spinning Pack 25 Spinneret 27 Heat Medium Enclosed Space (Heat Source)
28 Shielding plate (shielding member)
29 air layer 30 sealing member 31 supporting member 41 heat insulating member

Claims (10)

a spin pack provided with a spinneret at its lower end for spinning the molten polymer inside downwardly from the spinneret;
a spinning beam having the spin pack inserted therein;
a heat source disposed inside the spinning beam for heating the spinning pack;
a shielding member arranged to cover the outer surface of the spinning beam and shielding radiation from the heat source;
an air layer formed between the inner surface of the shielding member and the outer surface of the spinning beam;
A spinning device comprising: 2. The spinning apparatus according to claim 1, wherein said air layer is closed. further comprising a sealing member made of a heat insulating material and connecting the shielding member and the spinning beam;
3. The spinning apparatus according to claim 2, wherein the air layer is sealed by the shielding member, the spinning beam and the sealing member. The spinning device according to any one of claims 1 to 3, wherein a plurality of said air layers and a plurality of said shielding members are alternately arranged outside said spinning beam. further comprising a plurality of supporting members penetrating the air layer and connecting the outer surface of the spinning beam and the shielding member, and two adjacent shielding members, respectively;
5. The method according to claim 4, wherein the two supporting members respectively penetrating the air layers adjacent to each other are connected at different positions of the shielding member disposed between the air layers adjacent to each other. spinning equipment. The air layer is an air layer,
The spinning apparatus according to any one of claims 1 to 5, wherein the layer thickness of the air layer is 1 mm or more and less than 10 mm. The spinning apparatus according to any one of claims 1 to 6, wherein a heat insulating member is arranged outside the shielding member. The spinning according to any one of claims 1 to 7, further comprising a covering member that flattens the outer surface of the spinning beam by covering irregularities formed on the outer surface of the spinning beam. Device. The spinning apparatus according to any one of claims 1 to 8, wherein the shielding member covers at least the entire outer surface of the spinning beam, excluding the lower surface of the spinning beam. The spinning apparatus according to any one of claims 1 to 9, wherein the shielding member covers at least a part of the lower surface of the spinning beam, excluding the lower part of the spinning pack.

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