WO2015002419A1

WO2015002419A1 - Centrifugal spinning apparatus

Info

Publication number: WO2015002419A1
Application number: PCT/KR2014/005817
Authority: WO
Inventors: 홍성화; 이원종; 김진국; 고만우
Original assignee: 주식회사 유성텔레콤; (재)한국섬유기계연구원
Priority date: 2013-07-04
Filing date: 2014-06-30
Publication date: 2015-01-08
Also published as: KR101503765B1; KR20150005756A

Abstract

The present invention relates to a centrifugal spinning apparatus having nozzle tubes in which the length of the end part thereof on the opposite side to the rotational direction of the shaft is longer than the length of the end part thereof on the side of the rotational direction of the shaft, thereby attaining extra-fineness of the fiber and raising the diameter uniformity thereof. To that end, a centrifugal spinning apparatus for producing fiber according to the present invention comprises a centrifugal rotating body for spinning, through spinning nozzles, a spinning solution in an accommodating space in the interior of centrifugal rotating body by means of the centrifugal force generated by the rotation of the shaft, each spinning nozzle comprising: a nozzle hole in communication with the accommodating space and the outer surface of the centrifugal rotating body; and a nozzle tube in communication with the nozzle hole and extending to the outside, wherein the length of the end part of the nozzle tube on the opposite side to the rotational direction of the shaft is longer than the the length of the end part on the side of the rotational direction of the shaft.

Description

Centrifugal spinning device

The present invention relates to a centrifugal spinning device, and more particularly, the end length of the opposite side in the axial rotation direction of the nozzle tube is formed longer than the end length of the axial rotation direction, so that the fiber can be made fine, and the diameter of the fiber is uniform. It relates to a centrifugal spinning device that can improve the castle.

The spinning process of the fiber refers to a process of continuously pushing the polymer fluid through the thin holes and converting them into long thin fibers.

In general, the spinning process is performed by passing a hot polymer fluid past a thinner hole called a spinneret (hereinafter referred to as a 'spinning nozzle'), and then cooling and solidifying it by pulling it around a winding part. Is done.

Representative spinning processes include melt spinning, solution spinning (wet spinning, dry spinning), centrifugal spinning, and the like.

Melt spinning is a method in which a polymer chip is placed in a raw material storage of a spinning machine, melted in a high temperature extruder, extruded fiber through a spinning nozzle, solidified by cold cooling air, and then stretched by a winding unit.

Solution spinning (wet spinning, dry spinning) dissolves the raw polymer in a solvent in a reservoir, passes it through a heat exchanger, and adjusts the molecular weight or viscosity to pass through a spinning nozzle and then passes a cold coagulating solution (wet spinning). Alternatively, it is a method of rapidly evaporating (dry spinning) with hot gas to be wound around the windings into fibers.

Centrifugal spinning is a method for producing fibers by spinning a resin by a centrifugal spinning process.

1 is a schematic view showing a conventional centrifugal spinning device, wherein the centrifugal spinning device is a rotating plate 1, a drive shaft 2, a resin supply line 3, wings 7, and 8, for supplying dry air. It comprises a shaft (4, 5), spinning nozzle (9) and overflow hole (6).

In the conventional centrifugal spinning device, after supplying the resin to the resin supply line 3 in the rotating plate 1 and driving the device, the fibers are emitted to the nozzle 9 opened in the centrifugal force direction by the centrifugal force.

However, in the above-described centrifugal spinning device, since the raw material is spun through the nozzle 9 opened in the centrifugal force direction, there is a problem that it is difficult to make the fiber fine.

[Reference Prior Art Document] Registered Patent No. 10-289250 (2001.02.16)

An object of the present invention for solving the problems according to the prior art is that the end length of the opposite side of the axial rotation direction of the nozzle tube is formed longer than the end length of the axial rotation direction side can achieve a finer fiber, the diameter of the fiber It is to provide a centrifugal spin that can increase the uniformity.

Centrifugal spinning device of the present invention for solving the above technical problem, comprising a centrifugal rotating body for spinning through the spinning nozzle spinning liquid contained in the inner receiving space by the centrifugal force generated as the shaft rotates to produce a fiber A centrifugal spinning apparatus for the above, wherein the spinning nozzle comprises a nozzle hole formed to communicate the outer surface of the receiving space and the centrifugal rotor and a nozzle tube communicating with the nozzle hole extending outward, the nozzle tube is An end length opposite the axial rotation direction is formed longer than the end length on the axial rotation direction.

Preferably, the centrifugal rotating body is formed in a disk-shaped or cylindrical with an upper opening to form the accommodation space, and the shaft may be provided vertically upward in the center of the bottom surface of the accommodation space.

Preferably, a plurality of concave grooves are formed on an outer circumferential surface of the centrifugal rotor, and the nozzle hole may be formed to communicate the concave groove with the accommodation space.

Preferably, the end of the nozzle tube may be formed to protrude more than the outer peripheral surface of the centrifugal rotor.

Preferably, the spinning nozzle may be formed to be inclined in a direction opposite to the axis rotation direction with respect to the radial direction of the virtual circle around the axis.

Preferably, the spinning nozzle may be formed in a straight shape.

Preferably, the spinning nozzle may be formed including a curved portion.

Preferably, the outer side of the centrifugal rotor is provided with a collector for collecting the fiber yarn spun through the spinning nozzle, the collector is formed in a cylindrical shape with at least a lower opening, the lower side of the collector is collected in the collector It may be provided with a conveyor for transporting the falling fiber yarn to the stabilization furnace.

Preferably, hot air supply means for supplying hot air to the inner space of the collector may be provided.

The present invention as described above has an advantage that the end length of the nozzle tube opposite to the axial rotation direction is formed longer than the axial rotation direction side edge length, which is advantageous in miniaturization of the fiber.

In addition, since the spinning nozzle for producing the fiber is formed to be inclined with respect to the centrifugal force direction, the fiber can be made fine, and the diameter uniformity of the fiber can be improved.

In addition, the spinning nozzle is composed of a nozzle hole and a nozzle tube, because the nozzle tube is formed in the concave groove formed on the outer circumferential surface of the centrifugal rotor to prevent the cooling of the nozzle tube by centrifugal rotation to harden the spinning liquid in the nozzle tube There is an advantage that can be prevented.

In addition, the end of the nozzle tube is formed so as to project than the outer peripheral surface of the centrifugal rotor has the advantage that the spinning liquid can be smoothly and effectively radiated.

In addition, there is an advantage that the fiber yarn falling from the collector provided on the outside of the centrifugal rotor can be transferred to the stabilization furnace as it is by using a conveyor.

In addition, there is an advantage that the hot air supply means for supplying hot air to the inner space of the collector can be prevented from curing the spinning liquid in the nozzle tube.

1 is a schematic view showing a conventional centrifugal spin value.

2 is a block diagram showing a schematic configuration of a centrifugal spinning apparatus according to an embodiment of the present invention.

Figure 3 is a perspective view showing a centrifugal rotating body constituting a centrifugal spinning device according to an embodiment of the present invention.

4 is a cross-sectional view showing a linear spinning nozzle formed in the centrifugal rotating body constituting the centrifugal spinning device according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a spinning nozzle having a curved shape formed in a centrifugal rotating body constituting a centrifugal spinning device according to an embodiment of the present invention.

6 is a cross-sectional view showing a spinning nozzle formed on the centrifugal rotor in the same direction as the centrifugal force direction.

The present invention can be embodied in many other forms without departing from the spirit or main features thereof. Therefore, the embodiments of the present invention are merely examples in all respects and should not be interpreted limitedly.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be.

On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, the terms "comprise", "comprise", "have", and the like are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification. Or other features or numbers, steps, operations, components, parts or combinations thereof in any way should not be excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be denoted by the same reference numerals regardless of the reference numerals and redundant description thereof will be omitted.

In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The centrifugal spinning device of the present embodiment includes a spinning solution supply part 100, a centrifugal rotor 200, a collector 300, a conveyor 400, and a stabilization furnace 500, and the centrifugal rotor 200 Fibers are produced by spinning the spinning solution using centrifugal force generated as the shaft rotates.

The spinning solution supply unit 100 is a part for supplying spinning solution to the receiving space (S) of the centrifugal rotor (200).

The centrifugal rotating body 200 is a portion that allows the spinning liquid contained in the accommodation space S to be radiated through the spinning nozzle 202 by the centrifugal force generated as the rotating shaft 210 rotates.

The collector 300 is installed to surround the outer circumference of the centrifugal rotor 200 and is a portion for collecting the fiber yarn spun from the centrifugal rotor 200.

The conveyor 400 is provided at the lower side of the collector 300 to move the cylindrical fiber product made of the fiber yarn collected by the collector 300 to the stabilization furnace 500.

Hereinafter, each component described above will be described in detail.

First, the spinning solution supply unit 100 will be described.

The spinning solution supply unit 100 is a part for supplying spinning solution to the accommodation space (S) of the centrifugal rotor (200).

The spinning solution supply unit 100 can be applied by adopting a variety of known supply means if the spinning solution can be continuously supplied to the inner receiving space (S) of the centrifugal rotor 200 constantly.

For example, the spinning solution supply unit 100, as shown in Figure 2, may be configured to supply the spinning solution to the interior of the centrifugal rotor 200 in a drop manner.

Specifically, the spinning solution supply unit 100 may include a hopper 110, an extruder 120, an injector 130, a heating heater 140, a control valve 150.

The hopper 110 is formed in a cylindrical shape of the ordinary light narrowing to facilitate the injection of the molten spinning liquid. The spinning solution introduced into the hopper 110 is supplied to one side of the extruder 120.

One side of the extruder 120 is configured such that the hopper 110 is in communication. The other side of the extruder 120 is configured to communicate with the injector 130.

Therefore, the spinning solution supplied through the hopper 110 provided at one side of the extruder 120 is extruded by an extrusion screw (not shown) provided in the extruder 120 and supplied to the injector 130. Can be.

On the other hand, a heating heater 140 is provided on the outer circumferential surface of the extruder 120. The heating heater 140 heats the entire surface of the extruder 120 so that the spinning solution passing through the extruder 120 does not solidify.

The spinning solution supplied to the injector 130 is supplied to the receiving space S of the centrifugal rotor 200 located below the injector 130.

At this time, the control valve 150 may be provided for controlling the supply amount of the spinning solution supplied from the injector 130 to the centrifugal rotor 200.

Therefore, the supply amount of the spinning liquid supplied from the injector 130 to the accommodation space S of the centrifugal rotor 200 can be kept constant.

On the other hand, the spinning solution supply unit 100 has been exemplified in the case of including a hopper 110, an extruder 120, an injector 130, a heating heater 140, a control valve 150, among the components Some may be omitted or may be configured to further add a separate component.

On the other hand, the spinning solution supply unit 100 may be configured to be provided with a supply pipe for supplying the spinning solution in the rotary shaft 210 of the centrifugal rotor 200 in addition to the drop method as described above, as in the prior art, The spinning solution may be directly supplied to the inside of the centrifugal rotor 200 through the supply pipe.

Through the spinning solution supply unit 100 as described above, it is possible to constantly supply a predetermined amount of spinning solution into the inner receiving space (S) of the centrifugal rotor (200).

Next, the centrifugal rotor 200 will be described.

The centrifugal rotor 200 is a portion for spinning the spinning liquid contained in the receiving space (S) therein through the spinning nozzle 202 by the centrifugal force generated as the rotating shaft 210 rotates to generate a fiber yarn to be.

3 is a perspective view illustrating a centrifugal rotating body constituting a centrifugal spinning device according to an embodiment of the present invention. As shown in FIG. 3, the spinning nozzle 202 is an outer circumferential surface of the centrifugal rotating body 200. A plurality may be arranged along the 200a at equal intervals.

Meanwhile, as shown in FIGS. 3 and 4, a plurality of concave grooves h are formed in the outer circumferential surface 200a of the centrifugal rotor 200, and the spinning nozzle 202 is the concave groove h. And a nozzle hole 202a communicating with the accommodation space S and a nozzle tube 202b extending outwardly in communication with the nozzle hole 202a.

At this time, the nozzle tube 202b is formed so that the end length opposite the axial rotation direction is longer than the end length of the axial rotation direction.

That is, as shown in Figure 4, the length of one end is formed in a shape cut in a diagonal direction longer than the length of the other end, the end length of the opposite side of the rotation direction of the rotation axis 210, the rotation direction of the rotation axis 210 It is formed by cutting longer than the side end length.

The flow of air generated when the centrifugal rotor 200 rotates flows from an end portion of the rotation shaft 210 to a side opposite to the rotation direction of the rotation shaft 210.

At this time, when the end of the nozzle tube 202b is formed to be cut in an oblique direction as described above, the spinning liquid immediately before being radiated from the end of the nozzle tube 202b at the end of the rotational direction of the rotation shaft 210 by the flow of air An effect is induced that flows to the opposite end of the rotational axis 210 in the rotational direction.

Therefore, the spinning of the spinning liquid radiated through the nozzle tube 202b may be accelerated to make the fiber finer.

In addition, as shown in FIG. 5, the end surface area of the nozzle tube 202b is gradually cut so that the end length of the opposite side in the rotational direction of the rotational shaft 210 is longer than the end length of the rotational side of the rotational shaft 210. It is an oval shape that becomes smaller.

Therefore, the spinning liquid immediately before being spun at the end of the nozzle tube 202b can be spun through the narrow portion of the ellipse to achieve the finer fiber.

At this time, the end of the nozzle tube (202b) is preferably formed to protrude more than the outer peripheral surface (200a) of the centrifugal rotor (200).

This is so that the spinning of the spinning liquid at the end of the nozzle tube 202b by the flow of air flowing along the outer circumferential surface 200a of the centrifugal rotor 200 when the centrifugal rotor 200 rotates. To do this.

As the spinning nozzle 202 is formed in the shape as described above, the fiber can be made fine.

The centrifugal rotating body 200 may be formed in a disc shape or a cylindrical shape with an upper portion opened, and the spinning liquid may be supplied to the inside of the accommodation space S through the opened upper portion.

The rotating shaft 210 is fixedly provided so as to extend vertically upward from the center of the bottom surface of the accommodation space S of the centrifugal rotor 200. As the rotating shaft 210 rotates, the centrifugal rotating body 200 rotates so that the spinning liquid contained in the accommodation space S may be radiated through the spinning nozzle 202.

The centrifugal rotor 200 may be rotated by a rotation driver for rotating the rotary shaft 210.

The rotation driving unit, for example, as shown in Figure 2, a fixed pulley 220 is fixed to the concentric shaft concentrically with the rotation shaft 210, a rotation motor 230 for generating a rotation driving force, the fixed pulley ( 220 and the drive shaft of the rotary motor 230 may be configured to include a drive belt 240 for transmitting the driving force of the rotary motor 230 to the fixed pulley 220.

On the other hand, if the rotary drive unit can rotate the rotary shaft 210 can be applied to select a variety of known rotary drive means of course.

For example, the rotation driving unit may be configured to transfer the driving force of the drive shaft of the rotary motor 230 for generating a rotation driving force is coupled coaxially with the rotation shaft 210 through a coupling.

On the other hand, as shown in Figure 6, the spinning nozzle 202 in the direction opposite to the rotation direction of the rotation axis 210 with respect to the radial direction (X, the centrifugal force direction) of the virtual circle around the rotation axis 210. It may be formed to be inclined.

That is, the spinning nozzle 202 is formed in a straight shape, it may be formed in a straight shape so that the nozzle hole 202a and the nozzle tube 202b has the same inclination.

FIG. 8 is a cross-sectional view of the spinning nozzle formed in the centrifugal rotor in the same direction as the centrifugal force direction. As shown in FIG. 8, when the spinning nozzle 202 is formed to face the same direction as the centrifugal force direction, the centrifugal rotor is formed. It is difficult for the spinning liquid radiated at the end of the spinning nozzle 202 to be smoothly spun by air resistance during the rotation of the 200.

That is, since the air resistance in the vertical direction is generated over the entire cross section of the spinning nozzle 202, it is difficult to achieve fine spinning of the fibers because smooth spinning of the spinning liquid is not achieved.

As shown in FIG. 6, the spinning nozzle 202 of the present embodiment is formed in the direction in which the spinning nozzle 202 is inclined with respect to the centrifugal force direction. The spinning liquid radiated at the end of 202 can be smoothly spun.

This is because the spinning direction of the spinning liquid radiated from the spinning nozzle 202 is directed to an oblique direction rather than perpendicular to the air resistance, so that the spinning liquid just before spinning at the end of the nozzle tube 202b is radiated by the flow of air. This is because the spinning of the spinning liquid is accelerated due to the induced effect.

On the other hand, since most of the nozzle tube (202b) is formed in the concave groove (h) formed in the outer peripheral surface (200a) of the centrifugal rotor 200, the nozzle tube (202b) by the flow of air during centrifugal rotation By preventing the cooling of the spinning liquid can be prevented.

Specifically, when the centrifugal rotor 200 is rotated, a cooling effect is generated on the outer circumferential surface 200a of the centrifugal rotor 200 due to air flow. As the majority of the nozzle tube 202b is formed inside (h), curing of the spinning solution inside the nozzle tube 202b is prevented.

On the other hand, in the above, the case of the spinning nozzle 202 is formed in a straight shape, as shown in Figure 7, the spinning nozzle 202 may be formed including a curved portion.

That is, the nozzle hole 202a may be formed in a straight line shape, and the nozzle tube 202b may be formed in a curved shape. Specifically, the nozzle tube 202b may be formed around the rotating shaft 210. It may be formed in a curved shape to be inclined in the opposite direction of the rotation direction of the rotation axis 210 with respect to the radial direction (centrifugal force direction) of the virtual circle.

In addition, both the nozzle hole 202a and the nozzle tube 202b may be formed in a curved shape.

At this time, the end of the curved nozzle tube 202b is preferably formed to protrude more than the outer peripheral surface (200a) of the centrifugal rotor (200).

On the other hand, in the above, the case where the spinning nozzle 202 is composed of a nozzle hole 202a and a nozzle tube 202b is illustrated, the spinning nozzle 202 is the nozzle hole (without the nozzle tube 202b) ( Of course, it may be composed of only 202a).

By spinning the spinning solution inside the accommodation space (S) through the centrifugal rotor 200 as described above it is possible to induce the miniaturization of the fiber.

Next, the collector 300 will be described.

The collector 300 is a portion for collecting the fiber yarn spun through the spinning nozzle 202 of the centrifugal rotor 200, the collector 300 is at the outer surface of the centrifugal rotor 200 Is spaced apart a predetermined distance is formed to surround the outer peripheral portion of the centrifugal rotor (200).

Specifically, the collector 300 may be formed in a cylindrical shape having at least a lower portion thereof, and may be configured in a form in which an upper portion is opened or a upper portion is closed as necessary.

On the other hand, the collector 300 may be provided with hot air supply means 310 for supplying hot air to the inner space (S1, the space in which the spinning liquid is made) of the collector 300.

The hot air supply means 310 may increase the inner space temperature of the collector 300 by supplying hot air to the inner space of the collector 300, through which the radiation provided in the centrifugal rotor 200 Cooling of the nozzle 202 may be prevented to prevent hardening of the spinning liquid in the spinning nozzle 202.

The temperature of the inner space S1 of the collector 300 controlled by the hot air supply means 310 is maintained at an appropriate temperature that is radiated from the centrifugal rotor 200 and does not interfere with the production of cylindrical fiber products. desirable.

On the other hand, the collector 300 and the centrifugal rotor 200 may be further provided with a voltage applying means (not shown) in order to more smoothly radiate the spinning liquid other than the centrifugal force.

For example, the collector 300 and the centrifugal rotor 200 are formed of an electrically conductive material, a positive voltage is applied to the centrifugal rotor 200, and a negative voltage is applied to the collector 300. Voltage applying means may be provided.

Accordingly, the spinning solution contained in the receiving space S of the centrifugal rotor 200 is charged with + ions, and the spinning solution charged with + ions is transferred toward the collector 300 applied with the − voltage. Therefore, more efficient radiation can be achieved by centrifugal force and electrostatic force.

The fiber yarn radiated from the centrifugal rotor 200 through the collector 300 as described above may be collected on the inner surface of the collector 300 to form a cylindrical fiber product.

Next, the conveyor 400 will be described.

The conveyor 400 is provided at the lower side of the collector 300 to transport the cylindrical fiber products falling after being collected on the inner surface of the collector 300 to the stabilization furnace 500.

The fiber yarn spun from the centrifugal rotor 200 is collected on the inner surface of the collector 300, the cylindrical fiber product formed by being collected on the inner surface of the collector 300 is gradually collected by the collector 300 It is pushed downward along the inner surface of.

Cylindrical fiber products pushed downward along the inner surface of the collector 300 fall to the upper portion of the conveyor 400 through the opened lower portion of the collector 300.

The cylindrical fiber product dropped to the upper portion of the conveyor 400 is transferred to the stabilization furnace 500 for stabilizing the product is to be stabilized.

Through the conveyor 400 as described above, the cylindrical fiber products collected and collected by the collector 300 can be transferred to the stabilization furnace 500 as it is to be stabilized.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims

A centrifugal spinning apparatus for manufacturing a fiber comprising a centrifugal rotating body for spinning through the spinning nozzle the spinning liquid contained in the inner receiving space by the centrifugal force generated by the rotation of the shaft,

The spinning nozzle includes a nozzle hole formed to communicate the outer surface of the accommodation space and the centrifugal rotor and a nozzle tube extending outwardly in communication with the nozzle hole, wherein the nozzle tube is an end opposite to the axial rotation direction. A centrifugal spinning device characterized in that the length is formed longer than the end length of the axial rotation direction.
The method of claim 1,

The centrifugal rotating body is formed in a disk-shaped or cylindrical with an upper opening to form the accommodation space, the centrifugal spinning apparatus, characterized in that the axis is provided vertically upward in the center of the bottom surface of the accommodation space.
The method of claim 2,

A plurality of concave grooves are formed on the outer circumferential surface of the centrifugal rotor, the nozzle hole is a centrifugal spinning device, characterized in that formed to communicate with the concave groove and the receiving space.
The method of claim 3,

An end portion of the nozzle tube is formed so as to project than the outer peripheral surface of the centrifugal rotating body centrifugal spinning apparatus.
The method of claim 1,

And the spinning nozzle is inclined in a direction opposite to the axis rotation direction with respect to the radial direction of the virtual circle about the axis.
The method of claim 5,

The spinning nozzle is a centrifugal spinning apparatus, characterized in that formed in a straight shape.
The method of claim 5,

The spinning nozzle is a centrifugal spinning apparatus characterized in that it comprises a curved portion.
The method of claim 1,

The outer side of the centrifugal rotor is provided with a collector for collecting the fiber yarn spun through the spinning nozzle, the collector is formed in a cylindrical shape with at least a lower opening, the lower side of the collector is collected by the collector to fall Centrifugal spinning device characterized in that the conveyor is provided for transporting the fiber yarn to the stabilization furnace.
The method of claim 8,

Centrifugal spinning device characterized in that the hot air supply means for supplying hot air to the inner space of the collector.