KR101588433B1 - Apparatus for manufacturing carbon fiber film for manufacturing non-woven fabric and carbon fiber film manufactured using the same - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a carbon fiber film for forming non-woven fabric and a carbon fiber film manufactured using the same, wherein the large diameter of the cylinder roll has worker rolls which are spaced apart at regular intervals along the outer peripheral surface and rotate in a direction opposite to the cylinder roll, and between one side of the worker roll and the cylinder roll, a stripper roll rotating in the same direction as the worker roll is equipped, and at the output side of the cylinder roll, a web roll rotating in the direction opposite to the cylinder roll is equipped, wherein the cylinder roll, the web roll, the worker roll and the stripper roll each has a band-type saw blade winding spirally to be fixed along the outer peripheral surface, and the saw blade intervals (G) in the direction of the axis of each roll are maintained to be 1-2 mm, and the number of saw blades (S) per inch in each roll′s saw blade is kept to be 6-10 T, and regarding the angle (A) of saw blades equipped in each roll, the angle (A) of saw blades equipped in the cylinder roll is 60-72°, the angle (A) of saw blades equipped in the web roll is 60-65°, the angle (A) of saw blades equipped in the worker roll is 60-68°, and the angle(A) of saw blades equipped in the stripper roll is 60-65°, so that manufacture of a pure carbon fiber film is possible.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon fiber film manufacturing apparatus for forming a nonwoven fabric and a carbon fiber film produced using the apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for producing a carbon fiber film for forming a nonwoven fabric and a carbon fiber film produced using the apparatus. More particularly, The present invention relates to a device for manufacturing a carbon fiber film for forming a nonwoven fabric in which a web of film type can be manufactured using only pure carbon fibers and a carbon fiber film produced using the device.

Generally, the nonwoven fabric is formed in the form of a cloth by allowing the fibers to be bonded together by chemical or mechanical means without going through the weaving process of the fibers, and is mainly used for industrial applications such as clothing wicks, filters, carpets, polishing cloths, It is used in various fields.

Because of its good texture, nonwoven fabrics are made of composite materials including synthetic fibers and synthetic fibers in addition to natural ones.

Among these nonwoven fabrics, a recent interest is focused on nonwoven fabrics using carbon fibers.

Carbon fiber is lighter than metal but has better strength and elasticity than metal. It has good heat resistance, impact resistance and not corroded. Recently, fishing rod, golf club, tennis racket, aircraft, wind power equipment, automobile parts, civil engineering and construction materials And so on.

Such a carbon fiber can be applied to a wide variety of materials through filming or sheeting, so that it is a subject of dreams in the future and has become an object of attention and research all over the world.

Carbon fiber is generally used as a reinforcing material for a composite material product comprising a thermosetting resin or a thermoplastic resin as a matrix resin, but it is mainly used as a thermosetting resin which is easy to form and handle.

That is, when a matrix resin such as a vinyl ester resin is quickly and uniformly impregnated between the respective carbon fibers constituting the carbon fiber bundle, properties such as affinity and bending strength of the obtained composite material can be improved.

Korean Patent Laid-Open Publication No. 2014-0126307 (titled "Carbon fiber composite material") describes a carbon fiber composite material using a thermoplastic resin as a matrix resin for carbon fibers.

As in the prior art, the carbon fiber can not form desired physical properties by itself, so various matrix resins are combined to produce a carbon fiber nonwoven fabric.

However, the specific gravity of the carbon fiber is deteriorated because the carbon specific gravity of the carbon fiber is lowered by the bonding amount of the matrix resin that bonds the matrix resin to the carbon fiber.

Korean Patent Publication No. 2014-0126307 (Oct. 30, 2014) Public Utility Model No. 1998-011744 (May 25, 1998)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a carding machine in which a gap between saw blades wound on rolls of respective saw blades applied to various carding rolls provided in a carding machine, The present invention provides a carbon fiber film production apparatus for forming a non-woven fabric, which is capable of producing a carbon fiber film with only fibers, and a carbon fiber film produced using the apparatus.

Another object of the present invention is to provide a carbon fiber film manufacturing apparatus for forming a nonwoven fabric, in which a part of an outer circumferential surface of a cylinder roll adjacent to a web roll of a cylinder roll is covered with a cover for preventing scattering to prevent scattering of carbon fibers.

It is another object of the present invention to provide a carbon fiber film manufacturing apparatus for forming a nonwoven fabric which can be recycled and used in various fields.

The apparatus for manufacturing a carbon fiber film for forming a nonwoven fabric according to the present invention for achieving the above object is characterized in that a worker roll rotating in a direction opposite to the cylinder roll is provided at a predetermined interval along an outer circumferential surface of a cylinder roll having a large diameter, A stripper roll is provided between one side of the roll and the cylinder roll so as to rotate in the same direction as the worker roll and a web roll is provided on the output side of the cylinder roll so as to rotate in the opposite direction from the cylinder roll, The band saw blade is spirally wound around the cylinder roll, the web roll, the worker roll and the stripper roll, respectively, along the outer circumferential surface of the belt roll, and the gap G between the saw blades in the axial direction of each roll is maintained at 1 to 2 mm. The number of saw blades S per inch is set to 6 to 10 T in the saw blade of each roll,

The saw blade angle A in the cylinder roll is 60 ° to 72 °

The saw blade angle A in the well roll is 60 ° to 65 °

The saw blade angle A in the walker roll is 60 ° to 68 °

The saw blade angle A in the stripper roll is 60 ° to 65 °

.

Further, in the present invention, the gap between the cylinder roll and the worker roll, the worker roll and the stripper roll, and between the saw rolls of the cylinder roll and the web roll are separated by 0.13 mm to 0.18 mm, and the saw blade edges of the stripper roll and the guide roll are 0.25 Spaced apart by a gap of mm to 0.3 mm.

Particularly, in the present invention, a cover for preventing scattering is provided between the cylinder roll and the web roll so that the fiber yarn is not scattered from the cylinder roll to the web roll side.

A fiber bundle of carbon fibers continuously fed by a carbon fiber film production apparatus for forming a nonwoven fabric and a carbon fiber film produced by using the apparatus has a structure in which a bundle of fibers is formed between a cylinder roll and a worker roll, So that the carding can be repeatedly performed while the fiber yarn is fed again to the cylinder roll, so that the film can be formed only by the carbon fiber, so that the nonwoven fabric can be manufactured.

In addition, the present invention prevents the fiber yarn from being scattered to the web roll side by the wind generated by the rotation force of the guide roll, and to wind the fiber yarn from the guide roll by the saw blade to the web roll So that the carbon fiber web molding can be stably performed in the web roll.

1 is a front view illustrating a preferred embodiment of a carbon fiber film production apparatus for forming a nonwoven fabric according to the present invention.
2 is an enlarged view of part A of Fig. 1
3 is a vertical sectional view illustrating the configuration of a saw blade of a carbon fiber film production apparatus for forming a nonwoven fabric according to the present invention
4 is a front view of a state where a saw blade of a carbon fiber film producing apparatus for forming a nonwoven fabric according to the present invention is deployed
Fig. 5 is an enlarged view showing the spacing between the saw blades of the carbon fiber film producing apparatus for forming the nonwoven fabric according to the present invention
FIG. 6 is a schematic view illustrating a configuration of a carbon fiber film production apparatus for forming nonwoven fabrics according to the present invention, in which a fiber yarn from a guide roll to a web roll is not scattered.
Fig. 7 is an operational state diagram illustrating the structure of the wirings and the film forming process of the carbon fiber by the carbon fiber film producing apparatus for forming the nonwoven fabric according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a carbon fiber film production apparatus for forming a nonwoven fabric according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view illustrating a preferred embodiment of a carbon fiber film production apparatus for forming a nonwoven fabric according to the present invention. The carbon fiber used in the present invention may be a raw material to be discarded, Use carbon fiber.

As shown in the drawings, the present invention is to continuously supply the carbon fiber bundles cut to a predetermined length so that each fiber yarn can be cut through the carding machine.

The carding machine includes a large-diameter cylinder roll 10, a plurality of walker rolls 20 provided at regular intervals along the outer circumferential surface of the cylinder roll 10, and a walker roll 20 at one side of each walker roll 20, And a stripper roll (30) provided along the outer peripheral surface of the cylinder roll (10).

The walker roll (20) formed on the outer circumferential surface of the cylinder roll (10) in the carding machine has a small diameter configuration for rotating the cylinder in the direction opposite to the cylinder roll (10) The stripper roll 30 is provided on one side of the worker roll 20 so as to rotate in the same direction as the worker roll 20 with a smaller diameter.

A web roll 40 having a diameter similar to that of the cylinder roll 10 is provided on the output side of the cylinder roll 10 so that the web roll 40 is rotated in a direction opposite to the cylinder roll 10, (10).

Therefore, in the present invention, the walker roll 20, the stripper roll 30 and the web roll 40 rotate in the same direction, and only the cylinder roll 10 rotates in the opposite direction.

The rotation speed is such that the stripper roll 30 is the fastest and the cylinder roll 10 driven by the same belt as the stripper roll 30 is rotated next fast, (40) is provided so as to be able to decelerate and rotate considerably in comparison with the cylinder roll (10).

As shown in FIG. 2, the saw rolls 11, 21, and 31, which can heal the carbon fibers, are fixed to the outer circumferential surface of the cylinder roll 10, the walker roll 20, and the stripper roll 30, The saw blade 41 is also provided on the outer circumferential surface of the web roll 40 provided at one side of the roll 10.

The saw blades 11, 21, 31 and 41 formed on the respective rolls 10, 20, 30 and 40 are formed in a band shape having a constant length, and one The band saw blades 11, 21, 31 and 41 are respectively wound and fixed in a spiral manner.

However, the saw blades 11, 21, 31, and 41 are formed such that the blade fixing portions, which are tightly fixed to the outer peripheral surfaces of the rolls 10, 20, 30 and 40, , 30, 40) are in close contact with each other.

The saw blades (11, 21, 31, 41) provided in each of the rolls (10, 20, 30, 40) are formed such that a gap G between the saw blades in the axial direction of each roll is 1 to 2 mm, The number S is formed to be 6 to 10T.

At this time, the gap (G) between the saw blades in the cylinder roll 10 to be actually used to soften the carbon fibers is most preferably 1.2 mm, and the spacing G between the saw blades in the walker roll is most preferably set to 1.5 mm Do.

On the other hand, each saw blade angle A in each saw blade 11, 21, 31, 41 of each roll 10, 20, 30, 40 is the most important factor in the deterioration of the carbon fiber.

For this purpose, in the present invention, each saw blade angle A provided in the cylinder roll 10 is formed to be 60 ° to 72 °, and each saw blade angle A provided in the walker roll 20 is 60 ° to 68 ° And each saw blade angle A in the strip roll 30 is formed to be 60 to 65 degrees and each saw blade angle A in the web roll 40 is formed to be 60 to 65 degrees .

FIG. 3 is a partially enlarged cross-sectional view illustrating a saw blade in an apparatus for manufacturing a carbon fiber film for forming a nonwoven fabric according to the present invention, FIG. 4 is a view showing a state in which a saw blade in a carbon fiber film producing apparatus for forming a non- FIG.

As shown in the drawing, the saw blades 11, 21, 31 and 41 in the present invention are helically wound around the outer circumferential surfaces of the rolls 10, 20, 30 and 40, And the outer peripheral side edge fixing portions of the outer peripheral side edge fixing portions are brought into close contact with each other.

The saw blades 11, 21, 31, and 41 allow the blade blades 11, 21, 31, and 41 to be formed at various intervals, the number of saw blades formed at one inch, and blade angle.

The angles of the double saw blades 11, 21, 31 and 41 mean the inner side angle of the blade as shown.

When the angles of the inner surfaces of the saw blades (11, 21, 31, 41) are set to be smaller than this angle, the amount of fibers caught by each blade becomes excessively large, A phenomenon is generated which is broken by the above.

If the fiber yarn is broken, the structure due to the irregular arrangement of the fibers in the web roll 40 is not properly formed, so that formation into a film becomes impossible.

On the contrary, if the inner surfaces of the saw blades 11, 21, 31 and 41 are formed to have a larger inner surface angle, the hairs themselves can not be formed well and the film can not be formed.

In the present invention, between the cylinder roll 10 and the web roll 40, the walker roll 20, the saw blades 11, 21, 31, 41 between the walker roll 20 and the stripper roll 30, It is most preferable that the stripper roll 30 and the saw blades 31 and 11 of the cylinder roll 10 are spaced apart by a gap of 0.25 mm to 0.3 mm .

Particularly, in the present invention, the scattering prevention cover 70 is provided between the cylinder roll 10 and the web roll 40 so that the fibers are scattered from the cylinder roll 10 toward the web roll 40 .

The scattering prevention cover 70 has a structure in which a certain height is separated from a certain height from a portion above the portion where the fiber yarn is to be transmitted by the saw blades 11 and 41 of the web roll 40 from the cylinder roll 10.

That is, since the center of rotation of the web roll 40 is positioned lower than the center of the cylinder roll 10, the closest position between the actual cylinder roll 10 and the saw blades 11 and 41 is the center of the web roll 40 It is located above the horizontal plane.

However, if a part of the carbon fibers is blown from the cylinder roll 10 by the centrifugal force generated by the rotational force while the cylinder roll 10 is rotated, it becomes difficult to control the thickness uniformly if it is stuck to the web roll 40 in advance.

That is, before the fiber yarn melted from the cylinder roll 10 is pulled by the web roll 40 side saw blade 41 between the cylinder roll 10 and the web roll 40, irregularly blown fiber yarns are pre- Preventing cover 70 for isolating the cylinder roll 10 and the web roll 40 from each other so as not to adhere to the web roll 40. [

It is more preferable that the operating structure provided between the cylinder roll 10 and the web roll 40 is isolated from the web roll 40 at the same time by the scattering preventing cover 70.

On the other hand, in the web roll 40, the carbon fiber web is formed in a film shape by the irregular bonding of the fiber yarns. The carbon fiber web is separated from the web roll 40 by using a separate separation mechanism (not shown) So that it can be moved to a subsequent process.

The carbon fiber web produced through the web roll 40 is a carbon fiber film having a thickness of 0.06 to 0.1 mm.

In the figure, reference numeral 50 denotes a feeding roll for supplying carbon fiber yarn to the cylinder roll 10 of the present invention. Reference numeral 60 denotes a feeding roll for adsorbing the carbon fiber yarn on the saw blade 50 of the cylinder roll 10 in the output side direction of the cylinder roll 11 So that the carbon fibers can be easily transferred to the web roll 40 so as to be spaced apart from each other.

The apparatus for manufacturing a carbon fiber film for forming a nonwoven fabric according to the present invention has already been cut to a predetermined length through a previous process and the cut fiber bundle is continuously supplied to a carding machine through a supply device.

In the bundle of fiber yarns, a few thousands to many hundreds of thousands of fiber yarns are twisted, and a bundle of these yarns is supplied continuously to the carding machine so that the yarn can be unraveled from the bundles of fiber yarns.

The fiber yarn bundle continuously fed through the feeding device is fed to the cylinder roll 10 by the feeding roll 50 of the carding machine as shown in Fig. 7 and is fed to the saw blade 11 of the rapidly rotating cylinder roll 10 The rotating fiber yarn bundle is formed by a saw blade 21 of the walker roll 20 to separate a part of the fiber yarns. The fiber yarn, which passes through the walker roll 20, The stripper roll 30 moves toward the stripper roll 30 by the stripper roll 30 forming the saw blade 31 in a direction opposite to the direction of the strip 30.

The fiber yarn transferred to the stripper roll 30 is fed again to the guide roll 10 and the saw blade 20 of the stripper roll 30 and the walker roll 20 provided at regular intervals along the outer circumferential surface of the guide roll 10 21, 31), the fiber yarn is transferred to the guide roll 10 again.

The bundle of fiber yarns fixed between the saw blade 11 and the saw blade 11 on the outer circumferential surface of the guide roll 10 while rotating the guide roll 10 in this manner is guided by a plurality of The saw blade 21 mounted on the worker roll 20 causes the fiber yarns partially twisted in the fiber yarn bundle to be dissociated by one hand.

The fiber yarn formed by the worker roll 20 rotates in the same direction as the walker roll 20 but the saw blade 31 of the stripper roll 30 is reversed so that the forming direction of each saw blade 21, To be separated from the worker roll 20 and supplied to the saw blade 11 of the guide roll 10.

That is to say, the fiber yarn bundle rotating along the guide roll 10 is separated from the saw blades 21 by separating the fiber yarn bundles by the saw blades 21 on the walker roll 20 side, The fiber yarn sandwiched by the outer circumferential surface of the walker roll 20 is passed through the stripper roll 30 forming the saw blade 31 in the direction opposite to the saw blade 21 on the walker roll 20 side, So that the fiber yarns taken out from the worker roll 20 are fed to the guide roll 10 again.

The angle between the guide roll 10 and the worker roll 20 is set such that the saw blade angle A of the guide roll 10 is 60 ° to 72 °, By forming the angle (A) at 60 ° to 68 °, it is possible to form a fiber yarn from a bundle of fiber yarns.

If these angles are formed smaller, each fiber yarn is broken as described above, and the web roll 40 is not formed in the form of a film. On the contrary, if the angle is made larger, The saw blade angle A in the rolls 10, 20, 30, 40 is the most important factor in the finishing of the fiber yarn.

The deterioration of the carbon fibers to be fed to the guide roll 10 by separating the fiber yarn from the bundle of fibers from the guide roll 10 by the saw blade 21 of the walker roll 20 as described above, 10 and the saw blades 11, 21 provided on the worker roll 20.

The fiber yarn sandwiched between the saw blades 21 of the walker roll 20 is pulled out between the saw blades 21 of the walker roll 20 by the saw blade 31 of the stripper roll 30 formed in the opposite direction The stripper roll 30 quickly rotates relative to the guide roll 10 so that it is instantaneously moved to the guide roll 10 before it is caught in the saw blade 31 of the stripper roll 30. [ .

The web yarn 40 is conveyed to the web roll 40 through the guide roll 10, the walker roll 20 and the stripper roll 30 so that the web yarns 40 are irregularly arranged, .

This shaping of the web is separated from the rapidly rotating guide roll 10 so that the fiber yarn transferred to the web roll 40 is not thick enough to form a film, So that the fiber yarns are irregularly arranged and stacked with a sufficient thickness on the main surface of the web roll 40 so that the film is formed into a film by entanglement between the fiber yarns.

Therefore, the continuous web yarn 40 is fixed to the web roll 40 side saw blade 41 at the lower outer circumferential surface of the web roll 40 to continuously form a web-shaped film with a thickness of 0.06 mm to 0.1 mm .

The film formed in the web roll 40 is separated from the web roll 40 using a separate separation mechanism and is then fed to a subsequent process which is repeated several times in a subsequent process, A nonwoven fabric made of carbon fibers can be produced.

As described above, according to the present invention, the guide roll 10, the working roll 20, and the saw blades 11, 21, 31, 41 of the stripper roll 30 can be removed from the bundle of pure carbon fiber yarns, So that the fiber yarn can be stably obtained.

Further, by making the fiber yarns to be irregularly bonded through the web roll 40 irregularly, it becomes possible to produce a carbon fiber film which is a basic unit of the carbon fiber nonwoven fabric.

On the other hand, in order to prevent the fiber yarns from being blown by the centrifugal force, which is rotational inertia of the guide roll 10, from the rotating guide roll 10 to the web roll 40 side, the guide roll 10 and the web roll 40, A cover 70 for preventing scattering can be provided.

The scattering prevention cover 70 is moved in a direction in which the web roll 40 is lifted from the guide roll 10 before the fiber yarn is conveyed from the guide roll 10 by the saw blade 41 of the web roll 40 The web thickness in the web roll 40 can not be kept uniform and constant.

Since the same characteristics can be realized only when the web web 40 is formed with a uniform thickness in the web roll 40, some of the web yarns are irregularly formed due to the rotational force of the guide roll 10, , The fiber webs in the web roll 40 are not uniform in thickness, resulting in differences in the characteristics of the webs.

Therefore, a scattering preventing cover 70 is provided between the guide roll 10 and the web roll 40 so that scattering of irregular fiber yarn from the guide roll 10 is prevented.

As described above, according to the present invention, it is possible to form a fiber yarn film having a constant thickness in the web roll 40 while allowing each fiber yarn to be smooth from a bundle of fiber yarns of a predetermined length, It becomes possible to use nonwoven fabric made only of carbon fiber.

Such nonwoven fabrics allow for more conductive and stronger strengths in place of conventional materials in a variety of industries, from small electronic components to automotive bodies and the body of a ship.

In addition, since waste carbon fibers discharged through various conventional industrial fields can be collected and used as raw materials for producing carbon fiber films, it is possible to prevent environmental pollution caused by disposal of waste carbon fibers as well as economical advantages of recycling .

Above all, the cost of recycling and disposal of waste carbon fiber and the cost of purchasing raw materials can be reduced, thereby providing an advantage of greatly reducing the manufacturing cost.

Particularly, the present invention relates to a method for manufacturing a nonwoven fabric using pure carbon fibers, in which the limit of the production of nonwoven fabrics is limited by the guide roll 10, the walker roll 20, the stripper roll 30 and the saw blades 11, 21, 31, 41 of the web roll 40 The carbon fiber nonwoven fabric can be fabricated by a simple structure modification.

10: guide roll 20: walker roll
30: stripper roll 40: web roll
50: Feeding roll 60: Brush roll
70: Shatterproof cover
11, 21, 31, 41:

Claims (5)

The work roll is provided with a worker roll which rotates in a direction opposite to the cylinder roll at regular intervals along an outer circumferential surface of the large diameter cylinder. A stripper is provided between the worker roll and the cylinder roll in the same direction as the worker roll. And a web roll is provided at an output side of the cylinder roll so as to rotate in the opposite direction from the cylinder roll,
The band saw blade is spirally wound around the cylinder roll, the web roll, the worker roll and the stripper roll, respectively, along the outer circumferential surface of the belt roll, and the gap G between the saw blades in the axial direction of each roll is maintained at 1 to 2 mm. The number of saw blades S per inch is set to 6 to 10 T in the saw blade of each roll,
The saw blade angle A in the cylinder roll is 60 ° to 72 °
The saw blade angle A in the well roll is 60 ° to 65 °
The saw blade angle A in the walker roll is 60 ° to 68 °
The saw blade angle A in the stripper roll is 60 ° to 65 °
Wherein the carbon fiber film is produced by a method comprising the steps of:
The method according to claim 1,
Wherein the gap between the cylinder roll and the worker roll, between the walker roll and the stripper roll, and between the cylinder roll and the web roll is 0.13 mm to 0.18 mm.
The method according to claim 1,
Wherein the gap between the saw blade of the stripper roll and the guide roll is spaced by a gap of 0.25 mm to 0.3 mm.
The method according to claim 1,
Wherein a cover for preventing scattering is provided between the cylinder roll and the web roll so that the fiber yarn is not scattered from the cylinder roll to the web roll side.
A carbon fiber film produced by using a manufacturing apparatus according to any one of claims 1 to 4 for producing a carbon fiber film for nonwoven fabric with a thickness of 0.06 to 0.1 mm.

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