KR101936660B1 - Multi-type meta-aramide fibrils manufacturing apparatus - Google Patents

Abstract

A multi-meta-aramid fibril production apparatus is provided
The present invention is characterized by comprising a first casing having a shank portion formed with a guide hole through which a rotary shaft is inserted and a second casing having an assembling hole in which a shaft supporting portion for supporting the rotary shaft is disposed and assembled with the first casing; A rotor assembled to the rotary shaft and having a plurality of inner cutting edges at regular intervals in the circumferential direction on the outer peripheral surface; And a plurality of outer cutting blades at a predetermined interval in the circumferential direction at a corresponding inner circumferential surface of the inner cutting blade and fixed to the outer side of the rotor, A fibril producing part; A driving motor for transmitting rotational driving force to a rotary shaft of one of the plurality of fibrillating units; And an operating member for reciprocating the connecting gear so as to be engaged with or spaced from a driven gear provided at an end portion of a rotary shaft of the fibrillating unit facing each other, to transmit the rotary driving force of the rotary shaft connected to the driving motor to another rotary shaft, ; .

Description

[0001] MULTI-TYPE META-ARAMIDE FIBRILS MANUFACTURING APPARATUS [0002]

The present invention relates to an apparatus for producing a multi-type meta-aramid fibrillating apparatus, and more particularly, to a multi-type meta-aramid fibrillating apparatus capable of producing a large amount of fibrils by simultaneously operating a plurality of fibrillating units with a single driving source, And to an apparatus for producing meta-aramid fibrils.

Generally, polyamide-based synthetic resins are classified into aliphatic polyamides and aromatic polyamides.

Aliphatic polyamides are commonly known under the trade name Nylon and aromatic polyamides are known under the trade name Aramid.

The aliphatic polyamide. Especially, nylon 6 and nylon 6,6 are the most common thermoplastic engineering plastics, and they are used not only as a fiber but also as a molding material in various fields. The nylon resin used in the molding industry is made of reinforced plastics which is reinforced with mineral or glass fiber to improve mechanical properties such as elasticity and lowering the price to have improved flame retardancy and impact resistance.

Aromatic polyamides, developed in the 1960s, have been developed to improve the heat resistance of nylon, an aliphatic polyamide, and are well known for their trade names such as Nomex, Kevlar, and these aromatic polyamides are known as flame- , Tire cord and the like, and has high heat resistance and high tensile strength.

A typical aliphatic polyamide is a synthetic resin having an aliphatic hydrocarbon bonded between amide groups, and an aramid is a synthetic resin having an amide bond having 85% of benzene groups bonded to two aromatic rings between amide groups.

The aliphatic hydrocarbon of the aliphatic polyamide easily undergoes molecular motion when heat is applied, whereas the benzene ring of the aromatic polyamide is stable to heat and has a high elastic modulus because the molecular chain is rigid and molecules do not easily move even when heat is applied. And there are many differences in characteristics.

The aromatic polyamide is classified into a para-aramid and a meta-aramid. The para-aramid is represented by Kevlar developed by DuPont.

The para-aramid is the benzene ring bound to the amide group at the para position. Since the molecular chain is very stiff and has a linear structure, it has a very high strength and a particularly high elasticity, so that it has excellent shock absorbing performance. It is used for armor, bulletproof helmet, safety gloves, boots and fire extinguisher. It is used for sports equipment such as sticks, fishing rods and golf clubs, and also for industrial use such as FRP (Fiber Reinforced Plastic) and asbestos replacement fibers.

On the other hand, the meta-based aramid is represented by Nomex developed by DuPont and Conex developed by Dejin. The meta-based aramid is a combination of the benzene ring and the amide group at the meta position. The strength and elongation are similar to ordinary nylon, but they are very stable against heat. They are lighter than other heat-resistant materials and have sweat absorption. Have. Initially, the color was limited to a few,

Recently, it has been made in various colors including fluorescent colors. It is used as fire-resistant clothing, uniforms for racing motorists, astronaut uniforms, work clothes, etc., and for industrial use, it is used for high-temperature filters.

Korean Patent Laid-Open Publication No. 10-2007-0109342 (Nov. 15, 2007) discloses a method for producing aramid pulp in a pulverizer in which a rotor is placed in a main body having an aramid short fiber inlet and an aramid pulp outlet and pulverizing blades are fixed on a wall surface of the main body and a rotor. And a short fiber obtained by cutting the filament is charged and then subjected to a dry milling treatment.

However, such a conventional apparatus has a structure for manufacturing fibrils by operating a plurality of pulverizers as one driving source, so that the driving efficiency is low and the yield is limited.

Further, it is impossible to secure a stable supporting force with respect to the rotating shaft for rotating the rotor with respect to the stator connected to the motor, and there is a limit to improve the grinding efficiency by maximizing the friction area.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a fibril production apparatus capable of increasing a facility efficiency and a yield, A multi-type meta-aramid fibril manufacturing apparatus capable of stably supporting a rotary shaft for rotational driving is provided.

In order to achieve the above-mentioned object, the present invention provides, as a specific means for achieving the above object, a refrigerator comprising a first casing having a shank portion formed with a guide hole through which a rotary shaft is inserted and an assembly hole in which a shank support portion for supporting the rotary shaft is disposed, A rotor mounted on the rotary shaft and having a plurality of inner cutting edges at regular intervals in the circumferential direction on the outer peripheral surface; And a plurality of outer cutting blades at a predetermined interval in the circumferential direction at a corresponding inner circumferential surface of the inner cutting blade and fixed to the outer side of the rotor, A fibril producing part; A driving motor for transmitting rotational driving force to a rotary shaft of one of the plurality of fibrillating units; And an operating member for reciprocating the connecting gear so as to be engaged with or spaced from the driven gear provided at an end portion of the rotary shaft of the fibril producing portion which is adjacent to each other to thereby transmit the rotary driving force of the rotary shaft connected to the driving motor to the other rotary shaft Part; Wherein the meta-aramid composition is filled in the cavity between the first casing and the second casing through the gap between the rotary shaft and the guiding construction, and the meta-aramid composition solidified by the neutralizing agent supplied into the cavity is pulverized, And discharging the fibrillated meta-aramid to the outside via a discharge pipe provided in the second casing.

Preferably, the guide hole has an inner diameter enlarged portion having a cross section whose outer diameter is enlarged toward the rotor side.

Preferably, the rotation shaft includes a stopper whose engagement is controlled by the rotor in the middle of the length, and is screwed with a male screw portion formed on the outer circumferential surface of the rotary shaft to fix the rotor controlled by the stopper to be in close contact with the outer surface of the rotor And has a female thread portion.

Preferably, the rotor has an arcuate groove recessed between adjacent inner cutting edges.

Preferably, the stator is integrally formed to protrude from the first casing or the second casing toward the rotor, or may be provided in a prefabricated manner so as to be disassembled and assembled into the first casing or the second casing.

Preferably, on one side of the rotor facing the second casing, a depression formed at a predetermined depth inwardly to form a filling space filled with the fibrillated meta-aramid while being solidified by a neutralizing agent and being crushed by inner and outer cutting edges, .

Preferably, a protrusion protruding from one side of the rotor facing the first casing so as to extend spirally or linearly from an assembly hole through which the rotary shaft is assembled to the inner cutting edge.

Preferably, one side of the first casing facing the rotor is provided with a projection protruding from the guide hole so as to extend spirally or linearly from the side of the outer cutting edge of the stator.

The present invention as described above has the following effects.

(1) Since the rotary shaft of a plurality of fibrillating units selectively connected by the power interrupter is rotationally driven as a single power source, it is possible to simultaneously perform the process of manufacturing the fibrils in the respective fibrillating units, The yield can be increased while the production can be controlled by cutting off the power according to the process conditions.

(2) When the motor is driven, the rotating shaft, which rotates in one direction, passes through the first casing and is supported on the shaft supporting portion of the second casing, thereby stably supporting the rotating shaft connected to the rotor, The fibrillation can be performed more efficiently.

(3) Since the friction area between the stator serving as the fixing member and the rotor serving as the rotating member can be increased, and the guide discharge of the meta-aramid composition can be smoothly performed, the efficiency of the manufacturing process of fibrillating the meta-aramid can be enhanced, .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram showing a multi-type meta-aramid fibril manufacturing apparatus according to a preferred embodiment of the present invention. FIG.
FIG. 2 is an exploded perspective view showing a fibril manufacturing unit employed in an apparatus for producing multi-type meta-aramid fibrils according to a preferred embodiment of the present invention.
3 is a cross-sectional view showing a fibril producing unit employed in a multi-type meta-aramid fibril producing apparatus according to a preferred embodiment of the present invention.
4 is a perspective view showing another embodiment of a rotor employed in a multi-type meta-aramid fibril manufacturing apparatus according to a preferred embodiment of the present invention.

The above objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a multi-type meta-aramid fibril manufacturing apparatus 100 according to a preferred embodiment of the present invention includes a first casing 110, a second casing 120, a rotor 130, A fryer manufacturing unit 100a or 100b including a motor 140 and a power interrupter 150 and a drive motor 160. [

The fibrillating units 100a and 100b are independently disposed at a predetermined interval along the longitudinal direction of the rotary shaft 112 to which the rotational driving force is transmitted, thereby manufacturing the fibrils.

The first casing 110 provided in the fibrillating units 100a and 100b includes a guide hole 114 through which a rotation shaft 112 to be rotated in one direction by a rotational driving force transmitted from the outside is inserted, It is a fixed structure.

Preferably, the guide hole 114 of the first housing 111 is provided in a shaft-like cylindrical portion 116 extending from the center of the body to a predetermined length.

The inner diameters of the shaft portion 116 and the guide holes 114 formed therein are relatively larger than the outer diameter of the rotary shaft 112. The meta-aramid composition supplied by a pump, not shown, And is supplied to a gap formed between the first casing 110 and the second casing 120 through the guide hole 114 to be filled.

Here, the guide hole 114 is formed such that the outer diameter of the guide hole 114 is enlarged toward the rotor 130 so that the meta-aramid composition can be smoothly supplied into the cavity formed between the first casing 110 and the second casing 120 And an inner diameter enlarged portion 114a having a sectional shape.

A predetermined amount of the meta-aramid composition forcibly supplied to the space between the guide hole 114 and the rotation shaft 112 is filled in the cavity formed between the first casing 110 and the second casing 120, Is supplied through the supply path between the outer surface of the first casing (130) and the inner surface of the first casing (110).

The second casing 120 provided in the fibrillating units 100a and 100b may be formed in a space in which the rotor 130 and the stator 140 are disposed and a cavity in which the meta-aramid composition is filled, And is coupled to the first casing 110.

In the center of the body of the second casing 120, an assembly hole 122 is formed through which an axial supporting portion 124 such as a bearing member is disposed to support the rotation of the rotary shaft 112 in one direction.

It is preferable that the rotation shaft 112 passing through the assembly hole 122 and exposed to the outer end of the second casing 120 is provided with a detent nut 126. The outer edge of the second casing 120, The skirt portion 118 extending from the outer rim of the first housing 110 is inserted into the stepped portion 128 to form a step 128.

The meta-aramid composition in the fibril-forming space between the rotor 130 and the second casing 120 is solidified and swelled with the neutralizing agent and the fibrillated meta-aramid is discharged to the outside in the second casing 120 And a discharge pipe 125.

The rotor 130 provided in the fibrillating units 100a and 100b is assembled in the middle of the length of the rotary shaft 112 and disposed in a cavity between the first and second housings 110 and 120, The first and second housings 110 and 120, and the stator 140. The stator 140 and the first and second housings 110 and 120 are rotatable in one direction.

The rotor 130 has an assembly hole 131 through which a rotary shaft 112 is inserted and assembled and a key groove is formed in the assembly hole 131 so as to be assembled with a rotary shaft as a key member.

The rotor 130 has a plurality of inner cutting blades 132 at regular intervals in the circumferential direction on the outer circumferential surface thereof and a feed flow of the meta-aramid supplied into the cavity between the adjacent inner cutting blades 132 It is desirable that the arcuate groove 134 be recessed so as to induce the friction more smoothly.

The rotation shaft 112 assembled with the assembly hole 131 of the rotor 130 is provided with a stopper 112a in which the rotor 130 is locked in the middle of its length, And a female screw portion 112c screwed to the male screw portion 112b formed on the outer circumferential surface of the rotary shaft 112 to fix the position of the rotor 130 to the outer surface of the rotor 130. [

At this time, the stopper 112a is provided to control the engagement position of the rotor 130 so that the inner cutting edge 132 of the rotor and the outer cutting edge 142 of the stator face each other.

Accordingly, the rotor 130 is fixed between the stopper 112a of the rotary shaft 112 and the male screw portion 112c so as not to move up and down during rotation, and is rotated in one direction along with the rotary shaft when the motor is driven.

As shown in FIG. 4, one side of the rotor 130 facing the one side of the first casing 110 is provided with a pair of guide grooves 131, which are provided through gaps between the rotation shaft 112 and the guide holes 131, It is possible to form another crushing space between the rotor 130 and the first casing 110 while smoothly guiding and discharging the aramid composition in the radial direction in the boundary region between the rotor 130 and the first casing 110 It is preferable to protrude a protruding portion 138 extending spirally or linearly from the assembly hole 131 in which the rotary shaft 112 is assembled to the inner cutting edge 132.

Or another side extending from the guide hole 114 toward the outer cutting edge 142 side of the stator 140 on one side of the first casing 110 facing the one side of the rotor 130 The protruding portion may be formed to protrude.

The stator 140 provided in the fibril manufacturing units 100a and 100b is provided with a plurality of outer cutting edges 142 at regular intervals in the circumferential direction on the inner peripheral surface corresponding to the inner cutting edge 132 of the rotor 130, And is fixedly installed on the outer side of the rotor (130).

The stator 140 having the outer cutting edge 142 and disposed on the outer side of the rotor 130 is disposed on the inner surface of the first casing 110 or the inner surface of the second casing 120 toward the rotor The first casing 110 and the second casing 120 may be integrally formed or integrally formed so that they can be disassembled and assembled, and may be provided on the inner surface of the first casing 110 or the inner surface of the second casing 120, respectively.

Accordingly, the meta-amarimide composition supplied as a gap between one side of the rotor 130 facing each other and the inner side of the first casing 110 is radially directed to the outside of the rotor 130 rotated in one direction The meta-aramid composition that is guided and solidified by the neutralizer supplied through the nozzle tube 149 into the cavity is disposed between the inner cutting edge 132 of the rotor 130 and the outer cutting edge 142 of the stator 140 And then crushed.

Here, one side of the rotor 130 facing the one side of the second casing 120 is filled with a fibrillated meta-aramid while being solidified by a neutralizing agent and being crushed by inner and outer cutting edges 132 and 142 And a depression 136 formed to be recessed at a predetermined depth inward to form the space S. [

On the other hand, a neutralizing agent for solidifying the meta-aramid composition is disposed through the first casing and the stator, and is supplied through a nozzle pipe 149 having a discharge end in a boundary region between the rotor and the stator.

A neutralizing agent may be supplied through the nozzle pipe 149 as a grinding space between the rotor and the stator to be solidified by mixing with the meta-aramid composition supplied to the gap.

In this case, it is preferable to appropriately adjust the solidification time of the meta-aramid composition, and water (H ₂ O) can be used as the neutralizer. However, in order to control the solidification time of the meta-aramid composition, a predetermined amount of water (H ₂ O) An aqueous solution of methyl acetamide mixed with dimethyl acetamide (DMAc) may also be used.

By adjusting the dimethylacetamide content of the aqueous solution of methyl acetamide, the solidification time for the meta-aramid composition can be appropriately controlled.

The aqueous dimethylacetamide solution prevents the meta-aramid composition from solidifying rapidly before fibrils are formed.

The power interrupter 150 includes a pair of fibrillating units 100a and 100b which are adjacent to each other and are engaged with or spaced apart from driven gears 151 and 152 provided at one end of a rotating shaft 112, (Not shown).

The driven gears 151 and 152 provided at one end or both ends of the rotating shaft 112 are provided as bevel gears and the connecting gears 153 are also beveled gears that are gear-engaged with the driven gears 151 and 152 at substantially right angles. However, the present invention is not limited thereto and may be a spur gear.

The operation member 154 may be configured to transmit power between the driven gears 151 and 152 when performing a fibril manufacturing process in the drive motor 160 and other fibril manufacturing units 100b, And a cylinder member rotatably provided with a connecting gear 153 at the rod end.

Here, each of the rotary shafts of the fibrillating unit is rotatably supported on a frame (not shown), and the cylinder member is fixed at an arbitrary position.

The driving motor 160 is a motor member directly or indirectly connected to the rotary shaft of one of the plurality of fibrillating units 100a and 100b so as to transmit rotational driving force.

Accordingly, when the driven gears 151 and 152 and the connecting gear 153, which are adjacent to each other, are engaged with each other by the operation of the operation member 154 to transmit power, the fibrillating unit connected to the driving motor 160 100b can be connected to the rotation axis 112 of the fibrillating unit 100a and the other rotation axis 112 of the fibrillating unit 100b adjacent to the rotation axis 112 of the fibrillating unit 100a, It is possible to perform the operation at the same time.

That is, the fibril manufacturing process of the fibril manufacturing units 100a and 100b employed in the multimetallic-aramid fibril production apparatus having the above-described configuration is performed through the gap between the rotation shaft 112 and the guide hole 114 When the prepared meta-aramid composition is supplied, the meta-aramid composition is supplied in a radial direction from a clearance between the rotor and the first casing by the rotational force of the rotor 130 assembled to the rotating shaft 112, And the second housing 120, as shown in FIG.

The meta-aramid composition, which is mixed and reacted with the meta-aramid composition by the neutralizer supplied to the boundary region between the rotor and the stator through the nozzle tube, is solidified while the solidification time is controlled, And is pulverized and fibrillated by a frictional force in a grinding space which is a gap between the outer cutting edges.

The pulverized and fibrillated meta-aramid is continuously filled in the filling space S between one side of the second casing 120 and the depression 136 of the rotor 130, 120 to be discharged to the outside and proceed to a post-process.

Such fibril-making fixation is performed independently in each of the adjacent fibril producing units, thereby increasing the efficiency of the process for producing fibrils and increasing the yield.

When the driven gears 151 and 152 and the connecting gear 153 that are adjacent to each other are separated from each other by the return operation of the operation member 153, only the fibrillating unit 100a connected to the driving motor 160 Because the brick manufacturing process can be done, it is possible to reduce or increase the amount of fibril production according to the set production volume.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

100: Multi-type meta-aramid fibril manufacturing device
100a and 100b:
110: first casing 112:
114: guide ball 116:
118: skirt part 120: second casing
122: an assembler 124:
125: outlet pipe 128:
130: rotor 132: inner cutting blade
134: groove 136: depression
140: stator 142: outer cutting edge
149: Nozzle tube 150: Power interrupter
151, 152: driven gear 153:
154: actuating member 160: drive motor

Claims (8)

A second casing having an assembling hole in which a shaft supporting portion for supporting the rotation shaft is disposed and which is assembled with the first casing; A rotor having a plurality of inner cutting edges at regular intervals in the circumferential direction on an outer peripheral surface thereof; And a plurality of outer cutting blades at a predetermined interval in the circumferential direction at a corresponding inner circumferential surface of the inner cutting blade and fixed to the outer side of the rotor, A fibril producing part;
A driving motor for transmitting rotational driving force to a rotary shaft of one of the plurality of fibrillating units;
And an operating member for reciprocating the connecting gear so as to be engaged with or spaced from a driven gear provided at an end portion of a rotary shaft of the fibrillating unit facing each other, to transmit the rotary driving force of the rotary shaft connected to the driving motor to another rotary shaft, ; Wherein the multi-meta-aramid fibril is produced by a process comprising: The method according to claim 1,
Wherein the guide hole has an inner diameter enlarged portion having a cross section whose outer diameter is enlarged toward the rotor side. The method according to claim 1,
The rotation shaft is provided with a stopper whose engagement is controlled by the rotor in the middle of the rotation axis and a female screw portion which is screwed with a male screw portion formed on the outer circumferential surface of the rotary shaft to fix the rotor controlled by the stopper, Wherein the multi-meta-aramid fibril production apparatus comprises: The method according to claim 1,
Wherein the rotor has an arcuate groove recessed between adjacent inner cutting edges. ≪ RTI ID = 0.0 > 8. < / RTI > The method according to claim 1,
Wherein the stator is provided integrally with the first casing or the second casing so as to protrude from the rotor, or is assembled so as to be disassembled and assembled into the first casing or the second casing. Device. The method according to claim 1,
A side surface of the rotor facing the second casing is provided with a depression formed by being recessed inwardly to a certain depth so as to form a filling space filled with the fibrillated meta-aramid while being solidified by a neutralizing agent and being crushed by inner and outer cutting edges Wherein the multi-meta-aramid fibril production apparatus comprises: The method according to claim 1,
And a protrusion formed on one side of the rotor facing the first casing so as to extend spirally or linearly from an assembling hole to which the rotating shaft is assembled to the inner cutting edge. The method according to claim 1,
And a protrusion formed on one side of the first casing facing the rotor so as to extend spirally or linearly from the guide hole toward the outer cutting edge side of the stator.

Images