KR880001739B1 - Melt-spinning methods - Google Patents

Abstract

The improved centrifugal spinning appts. for spinning molten pitch has heating means provided in the spinner disc, the heating means being electrically conductive heating material, in appts. including the spinner disc with a top wall, a bottom wall and a side wall, the top and bottom walls being connected to each other, a number of spinning nozzles being formed in the side wall, and the spinner disc being rotated at high speed to spin molten pitch into fibers through the spinning nozzles. The heating means comprises planar heating members each fixed in contact with outer surfaces of at least the top and bottom wall of the spinner disc, eahc of the planar heating members being made of electrically conductive heating material.

Description

Centrifugal Spinning Apparatus for Blown Fiber

1 is a longitudinal sectional view of a centrifugal spinning apparatus of a odorous fiber according to an embodiment of the present invention.

2 is an enlarged view of the left half portion of the spinner disc in the apparatus shown in FIG.

3 is a bottom view of the spinner disk shown in FIG.

4 is a schematic diagram of an overall system consisting of a melt part and a spin part, including the centrifugal spinning device shown in FIG.

5 is a longitudinal cross-sectional view of the centrifugal spinning apparatus of the odorous fiber according to the second embodiment of the present invention.

6 is an enlarged view of the left half portion of the spinner disc in the apparatus shown in FIG.

7 is a bottom view of the spinner disk shown in FIG.

8 is a longitudinal sectional view of the spinner disk portion of the blown fiber centrifugal spinning apparatus according to the third embodiment of the present invention.

9 is a cross-sectional view of the spinner disk shown in FIG.

10 and 11 are cross-sectional views similar to those of FIG. 9 except for showing deformation of the spinner disc in the centrifugal spinning according to the third embodiment of the present invention.

12 is a cross-sectional view showing the spinning state of shot material formation in a centrifugal spinning apparatus having a spinner disk without a circumferential wall on the side of the blown fiber centrifugal spinning apparatus according to one of the embodiments of the present invention.

* Description of the main parts of the drawings

2: centrifugal spinning device 4: central opening

6: spinner disc 6a: top wall

6b: bottom wall 6c: side wall

8: Spinning nozzle hole 10: Hollow rotating shaft

10a: central hole

12a, 12b: planar heateng member

14a, 14b: cover plate 16a, 16b: bolt

18: opening 20a, 20b: bearing

22: hollow fixed shaft 22a: circumferential flange

24: pulley 26: motor

29: belt 30: supply pipe

32a, 32b, 34a, 34b: current supply terminal 36: thermocouple

38a, 38b, 38c, 38d: wiring

40: rotary power supply mechanism

42a, 42b, 42c, 42d: conductive parts 44a, 44b, 44c, 44d: through ring

46a, 46b, 46c, 46d: holder 48a, 48b, 48c, 48d: energizing brush

50a, 50b, 50c, 50d: horizontal ball 52: hopper

54: heating melting apparatus 56: melting tank

102: circumferential groove 102A, 102B: flange

102a, 102b: Heat radiation surface 106: Spinner disk

108: spinning nozzle

The present invention relates to a centrifugal spinning device for odorous fibers, and more particularly, to an centrifugal spinning using isotropic nitrate or mesophase odors using petroleum or coal as a starting material and heat-melting them. It relates to a centrifugal spinning apparatus for odorous fibers for producing odorous fibers to be used as precursors of carbon fibers.

In general, a blown fiber centrifugal spinning apparatus has a wall, a bottom wall, and side walls connecting the bottom wall and the bottom wall, and the shaft wall includes a spinner disk having a plurality of spinning nozzles. The spinner disc is rotated at high speed so that the molten odor fed into the spinner disc is spun into the pit fibers through the spinneret. That is, the molten pitch is discharged out of the spinning nozzle by the centrifugal force generated by the high speed rotation of the spinner disk, and the molten pitch is stretched by the air friction generated around the spinner disk due to the high speed rotation of the spinner disk. It is formed of fish fibers.

In such a centrifugal spinning apparatus, it is proposed to use some heating means for the centrifugal spinning apparatus in order to form the molten pitch by fiberization during the centrifugal spinning of the molten pitch and to obtain a carbon fiber having a desired structure in the cross section. For example, such a proposal is described in Japanese Laid-Open Patent Application Publication Nos. 154416/82 and 203105/83.

In the above-mentioned Japanese Patent Application Laid-Open No. 154416/82, when spinning a molten odor adjusted to a temperature of 330 to 450 ° C. and a viscosity of 10 to 100 poises, 230 to 230 in the radial direction of the odorous fiber. It is described to carry out centrifugal spinning spinning using gas at a temperature of 400 ° C.

Japanese Laid-Open Patent Application Publication No. 203105/83 describes the installation of a radiating nozzle on an upper surface and a lower surface of a rotating spinning disk face-to-face, and on the bottom surface and / or the upper surface facing the heater.

The heating means shown in Japanese Patent Application Laid-Open Nos. 154416/82 and 203105/83 contact the spinner disc with hot gas heated by a heat source located away from the spinner disc, or It consists of heating a spinner disc with the heater used as the heat source installed separately from the spinner disc. In other words, the heating means described in these patent applications are those of an indirect heating method.

In such an indirect heating system, the temperature difference between the heat source and the molten bleed discharged to the spinning nozzle of the spinner disk tends to be large. For this reason, it is difficult to precisely control the discharge temperature of the molten pit according to the indirect heating method. In the case of increasing the discharge amount of the molten pour, it is more difficult to control the temperature. If the discharge temperature of the molten pit is not precisely controlled, the discharge amount of the molten pit is changed so that the woven fiber has a different fiber diameter. At the same time, it is also difficult to form the molten odor by fibrosis and to control the cross-sectional structure of the carbon fiber in a desired manner, which leads to deterioration of the quality of the product.

In the indirect heating method, when increasing the discharge amount of the molten pit, the temperature of the spinning nozzle for discharging the molten pit is likely to be lower than the set temperature. In order to prevent this, it is necessary to keep the temperature of the molten odor supplied in the spinner disk at a temperature higher than the discharge maximum temperature corresponding to the above-mentioned set temperature. In this case, however, radially undesirable shapes such as foaming, powdering and polymerization of the molten pit occur. This phenomenon leads to a bad result of cutting or breaking during odorous fiber spinning, which also makes it difficult to control the cross-sectional structure of the carbon fiber and degrades the quality of the product.

Furthermore, the conventional heating means described above requires a means for venting hot gas in the radial direction or is configured to isolate the heater from the spinner disk so that the entire apparatus tends to be enlarged. For this reason, the conventional heating means includes structural problems, such as the installation space of an apparatus becomes large.

Isotropic jade, which is made from petroleum or coal, as a starting material, tends to have a large change in viscosity due to temperature change and rapidly increase in viscosity as the temperature decreases. This is almost the same also with mesophase type odor. Therefore, in the case of spinning with a spinning spinner device for centrifugal spinning apparatus using the above-described raw material as a raw material, the rear molten bleed discharged from the spinning nozzle hole on the side wall of the spinner disk rapidly lowers temperature to become high viscosity and air friction. Often they solidify while not being fully stretched by.

For this reason, even if the odor becomes bead-like nass (called shot) or fibrous, the odor has a large diameter. It is difficult to say that the odor is "fiber". Accordingly, an object of the present invention is to precisely control the temperature of the molten pit in the spinner disc, especially the molten pit when discharged from the spinneret, so that a high quality carbon fiber can be produced and at the same time a large space for installing the apparatus. It is to provide a centrifugal spinning device of a woven fiber having a complete structure that does not require.

In addition, another object of the present invention is to prevent the rapid lowering of the molten odor immediately after it is discharged from the spinneret hole of the spinner disk sidewall, thereby allowing sufficient stretch to be obtained, and thus to provide a sufficiently high fiberized high quality odor fiber. To provide a radiation device.

In order to achieve the above and other objects, the present invention has a constant wall, a bottom wall and a side wall connecting the bottom wall and the bottom wall, and the side wall has a spinner disk having a plurality of spinning nozzles formed thereon, and the spinner disk is rotated at a high speed. A centrifugal spinning apparatus of a odorous fiber for spinning a molten odor supplied therein into a odorous fiber through the spinneret, wherein a heating means is provided in the spinner disk, and the heating means is made of an energized heat generating material. To provide.

In addition, the spinning apparatus according to the present invention comprises: a hollow fixed side coaxially arranged on a spinner disk; A hollow rotating shaft coaxially arranged at the center of the spinner disk and rotatably supported by a hollow fixed shaft for rotating the spinner disk at high speed; And a current supply terminal electrically connected to the heating means and supplying current to the heating means for heating the heating means, wherein the current supply terminal is connected to the battery with the heating means and extends upward through the central hole of the hollow rotating shaft. Electrical wiring means, and a rotary energizing mechanism for electrically connecting with the electrical wiring means and supplying power to the electrical wiring means from the outside, and rotating the electrical wiring means together with the spinner disc and the hollow rotating shaft. Moreover, the centrifugal spinning apparatus according to the present invention extends along the circumferential direction of the sidewall of the spinner disk and at the same time positions heat radiation surfaces facing each other so as to pass through the molten pit discharged from the spinneret holes. to provide.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 shows a first embodiment of the present invention, in which centrifugal spinning of the woven fiber is indicated generally by reference numeral 20. The apparatus 2 includes a front wall 6a having a central opening 4, a bottom wall 6b and It has a side wall 6c which connects the positive wall 6a and the bottom wall 6b, The side wall 6c has the spinner disk 6 in which the some radiation nozzle 8 was formed, and the bottom wall of the spinner disk 6 ( A hollow rotating drive shaft (hereinafter referred to as a hollow rotating shaft) attached to the central portion of 6b) by a bolt, etc. The constant wall 6a, the bottom wall 6b and the side wall 6c are made of, for example, a brass.

The outer surfaces of the positive wall 6a and the bottom wall 6b of the spinner disk 6 are in contact contact-fixed with planar heating elements 12a and 12b made of an energizing heating material such as an Nl-Cr alloy. In the illustrated embodiment, the mounting of the planar heating elements 12a and 12b covers the planar inventions 12a and 12b with cover plates 14a and 14b made of stainless steel or the like, and the front wall 6a. And the ratio between the bottom wall 6b and the cover plates 14a and 14b by using a suitable number of bolts 16a and 16b (see FIGS. 2 and 3). Mounting of the planar heating members 12a and 12b is not limited thereto. In the central portion of the lower cover plate 14b, an opening 18 slightly larger than the central hole 10a of the hollow rotating shaft 10 is drilled.

The hollow rotating shaft 10 is rotatably supported in the hollow fixed shaft 22 via the bearings 20a and 20b. The pulley 24 is attached to the upper end of the hollow rotating shaft 10. As shown in FIG. 4, the hollow rotating shaft 10 is driven to rotate by the motor 26 through the belt 29 introduced between the pulley 24 and the output shaft of the motor 26.

The lower end of the hollow fixed shaft 22 is formed with a circumferential flange 22a protruding radially outward. The circumferential flange 22a has a slight gap in the opening edge of the front wall 6a of the spinner disk 6 and closes the central opening 4 to serve as a top cover. Further, the circumferential flap 22a is provided with a supply pipe 30 for molten pit, and an outlet thereof is disposed in the spinner disk 6.

A pair of current supply terminals 32a and 32b, 34a and 34b are connected to the planar heating elements 12a and 12b, respectively, and the thermocouple 36 is connected to the spinner disc 6 as a temperature detecting means. have. The current supply terminals 32a and 34b are connected to the wiring 38a, and the current supply terminals 32b and 34b are connected to the wiring 38b. The thermocouple 36 is connected to the wirings 38c and 38d, and these wirings 38a to 38d extend upward through the hollow sphere hole 10a of the hollow rotating shaft 10. At the upper end of the hollow side 10 and the hollow fixed shaft 22, these wires 38a to (38d) are supplied so that a current is supplied from the outside of the hollow fixed shaft 22 to the wires 38a to 38d in the hollow rotating shaft 10. The rotary energization mechanism 40 electrically connected to 38d) is formed.

In the illustrated embodiment, the rotary energizing mechanism 40 has an energizing ring 44a having respective conductive portions 42a, 42b, 42c, and 42d mounted on the outer circumference of the hollow rotating shaft 10. , 44b, 44c, and 44d, and holders 46a, 46b, 46c, and 46d made of insulating material mounted on the hollow fixed shaft 22, and carrying ring Has energizing brushes 48a, 48b, 48c, and 48d which are urged radially inward by spring to press-contact the conductive portions 42a to 42b of 44a to 44d. It is an energizing brush mechanism. At the positions corresponding to the conductive portions 42a to 42d of the hollow rotating shaft 10 and the conducting rings 44a to 44d, the conductive portions 42a to 42d are formed at the center hole 10 of the hollow rotating shaft 10. ), The horizontal holes 50a, 50b, 50c, and 50d are exposed. The above-described wirings 38a to 38d are connected to the conductive portions 42a to 42d of the conduction ring through the lateral holes 50a to 50d. Wirings (not shown) are connected to the energizing brushes 48a to 48d, and are drawn out to the outside of the holders 46a to 46d, respectively, and are connected to necessary equipment. In addition, the rotary energization mechanism 40 is not limited to this structure.

The centrifugal spinning device 2 is used in a blown fiber spinning system as shown in FIG. This spinning system consists of a melting part M and a spinning part S, and the centrifugal spinning apparatus 2 is arrange | positioned at the spinning part S. As shown in FIG.

The molten portion M has a hopper 52, and an isotropic or mesophase-based solid odor is introduced into the hopper 52 as a starting material of coal or petroleum odor. The hopper 52 extracts air inside and injects nitrogen gas after the solid odor is put into contact with the nitrogen odor.

To the bottom of the hopper 52 is a screw type heating melting apparatus 54 incorporating a heating screw 54a, and the heating screw 54a is rotationally driven by a motor 54b. The solid plunger injected into the hopper 52 is heated and melted at a temperature of 300 to 350 ° C. by the rotation of the heating screw 54 and is sent to the outlet 54c of the screw tip at a constant speed. The melt tank 56 is connected to the outlet of the screw tip, and the hot melted pour flows into the melt tank 56 and is collected in a constant head. A gear pump 56b driven by the motor 56a is formed at the bottom of the melt tank 56, and the melt plunger is sent to the supply pipe 30 described above by the gear pump 56b. It is sent to the supply pipe 30. The molten pit reaching the supply pipe 30 flows into the spinner disk 6 of the centrifugal spinning device 2 therefrom.

The melting of the solid pit may be directed directly into the melting tank 56 if it is in an inert gas, in which case it becomes a bath type.

The use of the hopper 52 and the screw type hot melter 54 enables continuous melting of the solid pit.

Melting of the solid pit in the fusion | melting part M is performed at the temperature to which odor does not cause thermal decomposition.

The centrifugal spinning of the molten pit by the centrifugal spinning apparatus 2 is performed as follows. First, the nitrogen gas is supplied into the spinner disk from the pipe (not shown) formed near the supply pipe 30 prior to the inflow of the molten pit of the spinner disk 6 from the supply pipe 30, and the air therein is extracted to obtain a nitrogen atmosphere. . Terminals 32a, 34a, which are connected from the current source (not shown) to the brushes through the conducting brushes 48a and 48b of the rotary conduction mechanism 40 via wires 38a and 38b; Current is supplied to the 32b and 34b, and the planar heating elements 12a and 12b generate heat to heat the front wall 6a and the bottom wall 6b of the spinner disk 6, and also the side wall 6c. The temperature of the radiating portion near the side wall 6c of the spinner disk 6 is detected by the thermocouple 36. This current is sent from the energizing brushes 48c and 48d of the rotary energizing mechanism 40 to the control unit (not shown) via the wirings 38c and 38d, and the currents for the terminals 32c and 34d. The supply amount is controlled to control the temperature of the radiating portion near the side wall 6c of the spinner disk 6 to a constant temperature of, for example, 300 to 360 ° C.

As a result, the molten odor is supplied from the supply pipe 30 into the spinner disc 6 and at the same time the hollow rotary shaft 10 is rotated by the motor 26 through the pulleys 24, 28 and the belt 29. The disk 6 is rotated at a highway of about 1400 to 2500 rpm. The molten pour entering the spinner disk 6 thereby reaches the spinneret 8 of the side wall 6c, where it is discharged to the outside by centrifugal force and surrounded by the high speed rotation of the spinner disk 6. It is fiberized by air friction and spun into odorous fibers.

As described above, the temperature of the radiating portion near the side wall 6c of the spinner disk 6 is controlled at a constant temperature at about 300 to 360 ° C. However, since the planar heating elements 12a and 12b are in contact and fixed state to the front wall 6a and the bottom wall 6b of the spinner disk 6, the temperatures of the front wall 6a, the bottom wall 6b, and the side wall 6c are To lower, heat is immediately supplied from the planar heating elements 12a and 12b to control the temperature to a constant temperature of exactly about 300 to 360 ° C. Therefore, the temperature of the spinning portion near the side wall 6c is not affected by the temperature of the molten pit, and the spinning nozzle is kept at a low temperature until the temperature of the molten pit is reached until the spinning nozzle 8 of the side wall 6c is reached. When passing through the hole 8, the temperature of the portion is immediately heated to a constant temperature of about 300 to 360 DEG C, so that the temperature of the molten pit is precisely controlled through the spinning nozzle 8. Therefore, in the spinner disc 6, the fiberization of the odorous fiber formed through the spinneret hole 8 is performed satisfactorily without causing foaming, powdering, or the like of the molten odor. The control of the subsequent cross-sectional structure is also easily performed. The same applies to the case where the discharge amount of the molten odor from the spinning nozzle 8 is varied or the discharge amount is increased. When the discharge amount is increased, the production amount of the odor fiber can be increased.

Further, in the centrifugal spinning device 2, a configuration is used in which the planar heating elements 12a and 12b are contact-fixed to the outer surface of the spinner disk 6 as a heating means. Therefore, it is not necessary to install the heating means separately from the spinner disc 6, and the dimensions of the whole device are compact, and at the same time, the bottom of the spinner disc forms a completely free space which excludes any unnecessary member from entering and thus radiates The movement to the next process is set smoothly without any resistance to the drop of pitch fibers.

Further, in the centrifugal radiator 2 of the above embodiment, the wires 38a to 38d for the current supply terminals 32a, 32b, 34a, and 34b and the thermocouple 36 have a hollow shaft ( The electrical system for the planar heating elements 12a and 12b was connected to the rotary current-carrying mechanism 40 formed in the hollow rotating shaft 22 through the central hole 10a of 10) so as to contact the outside of the hollow fixed shaft. It is designed to avoid the complicated configuration of supplying current to the rotating part by treating it well.

In addition, in the centrifugal spinning device 2 of the above embodiment, the air flow can be introduced into the central hole 10a of the hollow rotating shaft 10 from the top, in which case the air flow cools the hollow rotating shaft 10, and The wiring in the hollow hole is cooled to prevent thermal damage thereof. Moreover, this air flow flows out from the lower side of the spinner disk 6, thereby giving the radially outward force of the blown fibers to be radiated, thereby making fiberization of the fibers more favorable.

Next, a second embodiment of the present invention will be described with reference to FIGS. In FIG. 5, the centrifugal spinning apparatus of a filthy fiber is shown with the code | symbol 60 as a whole. In the second embodiment of the present invention, the same reference numerals or characteristics are given as the same or similar members or components according to the first embodiment of the present invention.

As in the first embodiment of the present invention, the centrifugal spinning device 60 includes a front wall 62a having a central opening 4, a bottom wall 62b, and a side wall 62a connecting the bottom wall 62a and the bottom wall 62b. And a spinner disk 62 having a plurality of spinning nozzles 8 (see FIG. 6) formed on the side wall 62c.

The hollow rotating shaft 10 is coupled to the center of the disk 62. In the spinner disc 62, instead of the planar heating elements 12a and 12b according to the first embodiment of the present invention, the front wall 62a, the bottom wall 62b, and the side wall 62c are themselves Ni-Cr alloy or the like. It is made of energizing heating material.

The current supply terminals 32a, 32b, 62a, and 64b are connected to the bottom wall 62b of the spinner disk 62 to supply current to the energized heating material. The positions of the terminals 32a and 32b with respect to 62a are the same as those of the first embodiment of the present invention, but the terminals 64a and 64b with respect to the bottom wall 62b are different from those of the first embodiment of the present invention. It is formed near the outer peripheral part of 62b). When the spinner disc itself is made of an energizing heating material, the positions of the terminals 64a and 64b with respect to the bottom wall 62b in order to heat the radiating portion near the side wall 62c to a desired temperature are the outer peripheral parts of the bottom wall 62b. It is desirable to install near.

Since the other structure of the second embodiment of the present invention is substantially the same as that of the first embodiment of the present invention, the description is omitted below.

Since the centrifugal spinning device 60 according to the second embodiment of the present invention is also immediately supplied with the required amount of heat as in the first embodiment of the present invention, it is possible to accurately control the temperature of the molten odor passing through the spinning nozzle. In addition, since the molten odor before reaching the spinneret hole can be kept at a low temperature, deterioration such as foaming and polymerization can be avoided. Also in the centrifugal radiating device 60 according to the second embodiment of the present invention, the wirings 38a to 38d for the current supply terminals 32a, 32b, 64a, 64b and the thermocouple 36 are provided. ) Passes through the central hole 10a of the hollow rotating shaft 10 and connects it to the hollow rotating shaft 10 so that the hollow fixed shaft 22 connected to the rotary energizing mechanism 40 installed on the hollow fixed shaft 22 It is supposed to contact the outside. It is possible to treat the planar heating element, i.e., the electrical system against the wall, well and avoid a complicated configuration for supplying current to the rotating part or member.

In addition, it will be understood that the centrifugal spinning apparatus according to the second embodiment of the present invention can obtain other effects and advantages similar to those of the first embodiment of the present invention.

Example 1

Spinning is performed using the centrifugal spinning apparatus 2 of the first embodiment of the present invention shown in FIGS. In this case, the positive wall 6a, the bottom wall 6b and the side wall 6c of the spinner disk 6 are made of breath and the planar heating elements 12a and 12b are made of Ni-Cr alloy. The mesophase type odor is used as the material odor and the temperature is controlled so that the temperature of the radiating portion near the side wall 6c of the spinner disc 6 is maintained at 310 ° C., and the spinner disc 6 is rotated at 2000 rpm. As a result, odorous fibers of constant quality with a fiber diameter of 13.7 mu are obtained.

Example 2

Spinning is performed using the centrifugal spinning apparatus 60 of the second embodiment of the present invention shown in FIGS. In this case, the positive wall 62a, the bottom wall 62b and the side wall 62c of the spinner disk 62 are made of Ni-Cr alloy and use mesophase-based paint as the material pitch, and the side wall 62c of the spinner disk 62. The spinner disk 62 is rotated at 2500 rpm while maintaining the temperature of the adjacent spinning portion at 360 ° C. As a result, as in the case of Example 1, a feed fiber having a constant fiber diameter of 12.3 mu was obtained.

Example 3

The centrifugal spinning device 60 used in Example 2 is used, but spinning is carried out by using mesophase type wick as the material bleed, the temperature of the spinning disk is maintained at a temperature of 355 ° C., and the rotational speed of the spinner disk is 2000 rpm. . As a result, good-quality fiber having a fiber diameter of 13.4 mu is obtained.

Example 4

The centrifugal spinning apparatus used in Example 2 is used, but spinning is carried out by using mesophase-based coating as the material coating, the spinning disk temperature is maintained at 350 ° C., and the rotational speed of the spinner disk is 1400 rpm. The obtained fibers have a fiber diameter of 14.8 mu with uniform quality.

A centrifugal spinning apparatus according to a third embodiment of the present invention will be described with reference to FIG. 8 and FIG. The same reference numerals are used here as the components or members shown in FIGS.

As shown in FIG. 8, the centrifugal spinning apparatus is denoted by numeral 106 as a whole. Since the structure according to the third embodiment of the present invention is the same as that of the first embodiment except for the spinner disk 106, the description is omitted below.

In Fig. 9 showing the initial portion of the spinner disk 106, the rat has a pair of upper and lower thermal radiation surfaces extending in the circumferential direction of the side wall 106c. The upper and lower thermal radiation surfaces 102a and 102b are arranged to face each other, to pass through them so that the molten pour (p) can come out, and to be discharged from the spinning nozzle 10 provided in the side wall 106c.

In the structure shown in FIG. 9, the heat radiation surfaces 102a and 102b define a circumferential groove 108 that connects the radiating nozzle 108 at their bottom 102c among the spinner disk sidewalls 106c. It is installed to be suitable. The heat radiation surfaces 102a and 102b are defined by the opposite surface of the circumferential groove 102.

In addition, the thermal radiation surfaces 102a and 102b are each radiated from the sidewalls 106c of the spinner disk 106A by means of a suitable fastening mechanism such as a bolt, for example a pair of flanges 102A and 102B made of breath. It may be modified as in FIG. 10, which is shown fixedly installed at the upper and lower portions of the outlet of the nozzle 108. The heat radiation surfaces 102a and 102b are defined by opposite surfaces of the pair of flanges 102A and 102B.

In the structures shown in FIGS. 9 and 10, even if the spinning nozzles 108 are arranged in one orifice in the circumferential direction of the spinner disc side wall 106c, the nozzle arrangement is deformed as shown in FIG. It may be. In FIG. 11, three circumferential arcs of the spinning nozzles 108a, 108b and 108c are provided on the sidewalls 106c of the spinner disk 106B. The heat radiation surfaces 102a and 102b are provided so that molten pours Pa, Pb, and Pc can immediately exit after they are radiated through them.

In the centrifugal spinning apparatus according to the third embodiment of the present invention, the heat radiation surfaces 102a and 102b provided on the sidewalls 106c of the spinner disk 106 are also formed by the sidewalls 106c of the spinner disk 106. Heated to temperature. Accordingly, the molten pour P (shown in FIG. 9) discharged directly from the spinning nozzle 108 is heated by vertical radiation from the heat radiation surfaces 102a and 102b. This prevents the molten pour P from being cooled rapidly. In addition, in the space between the heat radiation surfaces 102a and 102b, that is, in the circumferential groove 102, air friction induced by the high-speed rotation of the spinner disk 6 is somewhat weakened, but strong air is outside the circumferential groove 102. Since friction occurs, the induced air friction is weakened to some extent, but strong air friction occurs outside the circumferential groove 102, and thus the discharged molten pour P is pulled by this air friction. Therefore, the molten pour P immediately after the discharge is pulled by the ambient air friction while maintaining low viscosity, and is scattered in the tangential direction in the stretched and sufficiently fibrous state.

In the case of the spinner disks 106A and 106B shown in FIGS. 10 and 11, it will be apparent that the same effects and advantages as described above are obtained.

In the following experimental examples, the woven fiber is spun in the centrifugal spinning apparatus according to the third embodiment of the present invention. The comparative example is also performed similarly. In all the experimental examples, the structure of the centrifugal spinning apparatus except for the spinner disk is shown in FIG. In each experimental example, the doublet (1) shown in FIG. 9, the structure (2) shown in FIG. 10, the structure (3) shown in FIG. 11, and the structure (4) shown in FIG. 2 are spinner disks. Used. In the case of the structure 4, the centrifugal spinneret has a spinner disk, wherein the spinneret is provided on the circumferential wall of the plate according to the first embodiment of the present invention, and an isotropic odor is used as the material.

As is apparent from the following table, the shortening rate is reduced from 30% to 3 to 5% by the third embodiment of the present invention. In addition, the variation of the fiber diameter is also within the range of 2.4 to 3.0 microns by the third embodiment of the present invention, and the uniformity of the fiber diameter is remarkably superior to that of the first embodiment of the present invention.

As described above, according to the centrifugal spinning apparatus of the odorous fiber according to the present invention, a planar heating element made of an energizing heating element on at least the front wall and the bottom wall of the spinner disk is made of an energizing heating material, so that the spinner disk is directly heated. It is possible to accurately control the temperature of the molten odor through the spinneret hole by quickly replenishing. This makes it possible to produce high quality carbon fibers and at the same time, it is possible to have a compact structure without incurring the great dimension of the whole dimension by installing the heating means. Therefore, it does not require a large installation space, and since there is no single member under the spinner disk, it forms a complete free space and is not prevented at all by the fall of the swept fibers. Therefore, the movement to the next process can be performed smoothly.

In addition, even when the wire connected to the heating means for power supply passes through the hollow rotating shaft for rotating the spinner disk at high speed and is connected to the rotational force supply attached to the hollow rotating shaft and the hollow fixed shaft for rotationally supporting the hollow rotating shaft. It is compact as a whole. In addition, even in the case of providing heat radiating surfaces opposed to each other so as to sandwich the molten plunges discharged from the spinneret holes, the molten pour immediately after the discharge is heated and rapidly cooled from the heat radiating surfaces by the top and bottom heat radiating surfaces. It is prevented and sufficiently drawn and fibrillated to a low viscosity state by air friction induced by the high speed rotation of the spinner disc. Therefore, the short rate can be made extremely small, the fiber diameter can be made uniform, and high quality odor fibers can be produced.

Claims (8)

The positive wall 6a; 62a; 106a;), the bottom wall 6b; 62b; 106b, and the side wall 6c; 62c; 106c which connect this bottom wall and the bottom wall, and a plurality of radiation nozzles (8; 108; 108a; Centrifugal spinning of the plied fibers having spinner discs 6; 62; 106 formed with 108b and 108c, and spinning the fused plunger supplied into the spinner disc through the spinneret to the pitted fibers by rotating the spinner disc at high speed. In the apparatus, a heating means (12a, 12b; 62a, 62b, 62c) is installed in the spinner disk (6; 62; 106), and the heating means is made of an energized heating material. 2. The heating element according to claim 1, wherein the heating means comprises planar heating elements (12a, 12b) fixed in contact with outer surfaces of at least one of the at least one wall (6a; 106a) and the bottom wall (6b; 106b) of the spinner disk (6; 106), respectively. And each of said planar heating elements is made of an energizing heating material. The centrifugal spinning apparatus according to claim 1, wherein the front wall (62a), the bottom wall (62b), and the side wall (62c) of the spinner disk (62) are made of an energized heating material. The positive wall 6a; 62a; 106a, the bottom wall 6b; 62b; 106b, and the side wall 6c; 62c; 106c which connect this bottom wall and the bottom wall, and a plurality of radiation nozzles 88; 108; 108a; 108b And a spinner disk (6; 62; 106) having a 108c formed therein, and spinning the spinner disk at a high speed so that the molten plunger supplied into the spinner disk is spun through the spinning nozzle into the pit fiber. A hollow fixed shaft (22) coaxially arranged on the spinner disk (6; 62; 106); A hollow rotating shaft (10) coaxially arranged at the center of the spinner disk and rotatably supported on the hollow fixed shaft for rotating the spinner disk at high speed; And current supply terminals 32a, 32b, 34a, 34b, 38a, 38b, and 40 which are electrically connected to the heating means and supply current to the heating means for heating the heating means. Electrically connected to the heating means and electrically connected to the electrical wiring means 38a, 38b extending upwardly through the central hole 10a of the hollow rotating shaft and the battery wiring means, and power can be supplied from the outside to the electrical wiring means. And a rotary energizing mechanism (40) for rotating the electrical wiring means together with the spinner disk and the hollow rotating shaft. 5. The rotary energizing device (40) according to claim 4, wherein the rotary energizer (40) has conductive parts (42a-42b) formed around the outer circumferential wall of the hollow rotating shaft (10) and the conductive parts of the conductive ring. A current-carrying brush mechanism provided with current-carrying brushes 48a-48d opposingly pressed in contact, wherein the brushes are collected in holders 46a-46d mounted to the hollow fixed shaft 22, and the electrical wiring means 38a, 38d) is connected to the energizing ring. The positive wall 6a; 62a; 106a, the bottom wall 6b; 62b; 106b, and the side wall 6c; 62c; 106c which connect this bottom wall and the bottom wall, and the radiation wall (8; 108; 108a; 108b) And spinner disks (6; 62; 106) forming 108c), wherein the spinner disk is rotated at a high speed so that the molten plunger supplied into the spinner disk is spun through the spinning nozzle into the pit fibers. In the sidewalls 106c of the spinner disk 106, molten pours (P; Pa, Pb) extending in the circumferential direction of the sidewalls and discharged from the spinneret holes (108; 108a; 108b; 108c) And a heat radiation surface (102a, 102b) positioned to face each other so as to pass through the Pc therebetween. 7. The pierced fiber according to claim 6, wherein a circumferential groove (102) in which the spinneret holes (108; 108a; 108b, 108c) open at the bottom is formed in the sidewall (106c) of the spinner disk (106). Centrifugal radiator. The pair of flanges (102A, 102B) located above and below the outlet of the spinneret hole (108) on the sidewall (106c) of the spinner disk (106) integrally and fixed to the heat radiation. Centrifugal spinning device of the woven fiber, characterized in that the surface is composed of opposing surfaces (102a, 102b) of the pair of flanges.

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