KR20230088620A - Method and apparatus for manufacturing high-strength short fiber composites using pressure lamination and photocuring - Google Patents

Abstract

The present invention relates to a method and an apparatus for manufacturing high-strength single-fiber composite by stamping and DLP hybrid lamination, which can maximize tensile strength by increasing the content and alignment level of single-fiber. The method for manufacturing the high-strength single-fiber composite of the present invention can press and stack a plurality of unit layers at a high density in the inner space of the stamping chamber by repeating the steps of: semi-curing a unit layer of a set thickness made of resin mixed with single-fiber while the unit layer is loaded on a work table; allowing a pressure plate to attach the unit layer, which is semi-cured on the work table to have an adhesive property, to the lower surface of the pressure plate; allowing the pressure plate to move relative to a stamping chamber in a state of attaching the semi-cured unit layer to the lower surface of the pressure plate; and pressing and stacking the semi-cured unit layer while the pressure plate enters the inner space of the stamping chamber and descends.

Description

Method and apparatus for manufacturing high-strength short fiber composites using pressure lamination and photocuring

The present invention relates to a method and apparatus for manufacturing short fiber composites, and relates to a method and apparatus for manufacturing high-strength short fiber composites capable of maximizing tensile strength by increasing the content and alignment of short fibers.

In vat-photopolymerization additive manufacturing, a photo-initiator is added to a liquid resin composed of a monomer and a cross-linker, placed in a water bath, and then selectively exposed to light to form a solidified shape. It is a method of additive manufacturing that produces

This photopolymerization method is widely used in jewelry crafts, orthodontic frames, and various prototypes because it enables detailed expression of shapes, high precision, and easy post-processing. This method is generally classified into a Stereolithography (SLA) method using a laser and a Digital Light Processing (DLP) method using UV light. The SLA method has excellent light output and enables detailed expression, but takes a long process time. DLP has a relatively fast processing process due to layering on a plane basis, but has limited light output. DMD) depends on the resolution level of the screen device.

Recently, the DLP photopolymerization method can be said to be a high-precision stacking method compared to the cost, as the DMD device has developed to a high resolution of 4K or higher, and it can be molded up to a size of about 200 mm with a resolution of 10 to 35 μm depending on the direction.

However, the typical disadvantage of the photopolymerization method is that the mechanical strength of the output is low. The material of light curing resin is very limited compared to other methods such as Fused Deposition Modeling (FDM). Researchers of the photopolymerization method are attempting various combinations of resins to compensate for these disadvantages. Many researchers are using epoxy acrylate-based resins with relatively high mechanical strength and low viscosity. The strength varies depending on the 3D printing process and the degree of post-curing (annealing, post-UV), but the tensile strength is approximately 20 to 40 MPa. In order to compensate for this, nanomaterials (fillers) such as Silica, Carbon black, Graphene oxide (GO), and Carbon nanotubes (CNT) are mixed and used as reinforcing materials, but most of them do not exceed 90 MPa.

Korea Patent Registration No. 10-2219555 (2021.02.18)

Therefore, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is a method and apparatus for manufacturing a high-strength short fiber composite material capable of maximizing tensile strength by increasing the content and alignment of short fibers. is to provide

In order to achieve the above object, the method for manufacturing a high-strength short fiber composite according to the technical idea of the present invention semi-cures a unit layer formed by mixing short fibers with resin to have adhesiveness, and then sequentially applies the semi-cured unit layers. It is characterized by its technical configuration to produce a high-strength short fiber composite by pressure lamination.

In the present invention, the semi-cured unit layer is sequentially pressurized and stacked in the internal space of the stamping chamber using a stamping chamber having an upper open internal space, while the press plate attaches the semi-cured unit layer to the lower surface. It may be characterized in that the unit layer is pressed and laminated while descending after being introduced into the inner space of the stamping chamber.

In addition, the single fibers included in the unit layer may be characterized in that they are aligned in one direction.

In addition, the short fibers may be characterized in that carbon fibers.

On the other hand, the method for manufacturing a high-strength short fiber composite of the present invention includes the steps of semi-curing a unit layer of a certain thickness made by mixing short fibers with resin in a state in which a unit layer of a certain thickness is loaded on a work table; attaching a unit layer that has been semi-cured on the work table and has adhesiveness to the lower surface of the pressing plate; relatively moving the pressing plate to the stamping chamber in a state where the semi-cured unit layer is attached to the lower surface; and pressing and laminating the semi-cured unit layer while the pressure plate is drawn into and descending into the inner space of the stamping chamber; to press and laminate a plurality of unit layers with high density in the inner space of the stamping chamber. that can be characterized.

Here, in the semi-curing step, a light irradiator may irradiate light to semi-cur the unit layer.

In addition, the light irradiator may be characterized in that it is an ultraviolet irradiator for irradiating ultraviolet rays.

In addition, in order to prepare the unit layer, supplying a predetermined amount of an intermediate material in a slurry state in which resin and short fibers are mixed to a work table by a slurry dispenser; It may be characterized by further comprising; spreading the intermediate material supplied to the work table by a layer forming member to form a unit layer having a predetermined thickness.

In addition, when the unit layer is attached to the press plate and moves from the work table, the wiper blade sweeps the upper surface of the work table to remove the residue of the unit layer remaining after the unit layer is formed from the intermediate material; further comprising can be characterized.

In addition, it may be characterized in that a collection box is provided at one side of the work table so that the residue of the unit layer swept by the wiper blade can be collected.

In addition, while the unit layer is semi-cured by irradiation with ultraviolet rays, the pressing plate may simultaneously perform an operation of pressing and laminating the semi-cured unit layer beforehand.

In addition, the single fibers of the unit layer may be characterized in that they are aligned in one direction.

In addition, when the unit layers are pressure-laminated, the single fiber direction of the n-th pressure-laminated unit layer and the single fiber direction of the (n+1)-th pressure-laminated unit layer are different from each other by the rotation of the pressure plate. It can be characterized as possible.

In addition, when the unit layers are pressure-laminated, the direction in which the single fiber direction of the n-th pressure-laminated unit layer and the single fiber direction of the (n+1)-th pressure-laminated unit layer are orthogonal to each other by the rotation of the pressure plate It can be characterized as such.

On the other hand, the high-strength short fiber composite manufacturing apparatus of the present invention, a work table on which a unit layer of a certain thickness made by mixing short fibers with resin is loaded; a stamping chamber installed near the working table in the form of an open top container; a light irradiator for semi-hardening by irradiating light to the unit layer loaded on the work table; and a pressure plate for attaching a unit layer that has been semi-cured and having adhesive properties on the work table to a lower surface, moves to the stamping chamber, and presses and laminates the unit layer while descending in the inner space of the stamping chamber. A feature of the technical configuration is that a plurality of unit layers can be pressure-laminated at high density in the inner space of the stamping chamber.

Here, the light irradiator may be characterized in that it is an ultraviolet irradiator that irradiates ultraviolet rays as light.

In addition, a slurry dispenser for supplying a predetermined amount of an intermediate material in a slurry state in which short fibers are mixed with resin on the work table; It may be characterized in that it further includes; a layer forming member installed to be horizontally movable along the upper surface of the worktable and molded into a unit layer having a predetermined thickness while spreading the intermediate material supplied to the worktable.

In addition, the layer forming member is installed side by side at a distance from each other on the left side and the right side and slides along the upper surface of the work table to form a left and right width of the unit layer, and a pair of slide parts. It may be characterized in that it is provided with an elevating blade unit that is installed to be able to move up and down in a transverse state to form a constant thickness of the unit layer while sweeping the intermediate material at a height spaced apart from the upper surface of the work table.

In addition, the pressurizing plate may be rotatably installed so as to be pressurized and laminated in a state in which the attached unit layer is rotated, in addition to being movably installed to pressurize and laminate the unit layer.

In addition, when the unit layer is attached to the press plate and moves from the work table, it is characterized by further comprising a wiper blade for removing residues of the unit layer remaining after the unit layer is formed from the intermediate material while sweeping the upper surface of the work table. can

In addition, it may be characterized in that a collection box is provided at one side of the work table to collect the residue of the unit layer swept by the wiper blade.

In addition, the collection box may be formed integrally with the work table.

The method and apparatus for manufacturing high-strength short fiber composites according to the present invention increase the content of short fibers by using a unique method of pressing and laminating unit layers in a semi-cured state using a stamping chamber and a pressure plate to increase the tensile strength of short fiber composites. There are advantages that can be maximized.

In addition to this, since the present invention can increase the degree of alignment of the short fibers included in the unit layer, the tensile strength of the short fiber composite can be further increased.

1 is a perspective view of a high-strength short fiber composite manufacturing apparatus according to an embodiment of the present invention
Figure 2 is a flow chart for explaining a high-strength short fiber composite manufacturing method according to an embodiment of the present invention
3 to 12 are a series of reference views for explaining a method for manufacturing a high-strength short fiber composite material according to an embodiment of the present invention.

With reference to the accompanying drawings, a high-strength short fiber composite manufacturing method and manufacturing apparatus according to embodiments of the present invention will be described in detail. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

<Example>

1 is a perspective view of a high-strength short fiber composite manufacturing apparatus according to an embodiment of the present invention.

As shown, the high-strength short fiber composite manufacturing apparatus according to an embodiment of the present invention includes a work table 110, a stamping chamber 120, a slurry dispenser 130, a layer forming member 140, and a press plate 150 , an ultraviolet irradiator 160 and a wiper blade 170.

The high-strength short fiber composite manufacturing apparatus of the present invention is configured to maximize tensile strength by increasing the content and alignment of short fibers made of carbon fibers by the above main components.

Hereinafter, an apparatus for manufacturing a high-strength composite material according to an embodiment of the present invention will be described in detail, focusing on each of the above components.

As shown in the drawing, the top surface of the work table 110 is made of a flat surface to provide a work area and is installed to move forward and backward along the rail R. A collection box 110a is integrally provided at one side (front end in the drawing) of the work table 110 so that the wiper blade 170 can collect the residue of the unit layer UL.

The stamping chamber 120 is provided as a container-shaped member with an upper opening near the work table 110 and is installed to be movable in the forward and backward directions along the rail R like the work table 110. The stamping chamber 120 restricts the unit layers UL from deviating from their original positions or from being excessively stretched in the circumferential direction when the pressure plate 150 sequentially presses and stacks a plurality of unit layers UL. It provides a work space in which pressurization can be performed more stably. When a plurality of unit layers (UL) are stably stacked under pressure in the internal space provided by the stamping chamber 120, a high-strength short fiber composite material having a high density can be manufactured. In particular, as the degree of alignment of the short fibers included in the unit layer UL that is pressure-laminated in the stamping chamber 120 increases, it becomes possible to manufacture a short fiber composite having higher strength.

The slurry dispenser 130 is installed to be movable in front and rear and left and right directions on the upper side of the work table 110, and the intermediate material (MM) in a slurry state made by mixing short fibers with resin is extruded on the work table 110 serves to supply The intermediate material (MM) to be supplied by the slurry dispenser 130 is a mixture of resin and short fibers and has a relatively high viscosity, so an actuator for extrusion is built-in.

The layer forming member 140 is installed on the upper surface of the work table 110 to be able to move up and down and forward and backward, spreading the intermediate material (MM) in a slurry state supplied to the work table 110 to a certain thickness while unit layer (UL) ) plays a role in molding. The layer forming member 140 is installed side by side at a distance from each other on the left side and the right side and slides along the upper surface of the work table 110 to form a left and right width of the unit layer UL, and a pair of slide parts 141 and , The thickness of the unit layer (UL) is increased while sweeping the intermediate material (MM) at a height spaced apart from the upper surface of the work table 110 by being installed to be able to move up and down while crossing the pair of slide parts 141. It is provided with a lifting blade part 142 that is formed uniformly. The elevating blade part 142 is connected to a pair of power transmission shafts 143 that transfer the driving force of the actuator to the elevating blade part 142 to raise and lower it, and the layer forming member 140 to achieve precise lifting operation It is guided by a pair of guide rods 144 for guiding the elevation of the elevating blade unit 142 while elevating while vertically penetrating the upper part of the main body. According to the configuration of the elevating blade unit 142 installed to be able to move up and down across the pair of slide units 141, the intermediate material (MM) made of a mixture of resin and short fibers is placed on the upper surface of the work table 110. It can be molded into a unit layer (UL) having a certain thickness while being spread to a thickness. Here, when the slurry dispenser 130 extrudes the intermediate material (MM) in a slurry state, when the unit layer UL is molded in such a way that the elevating blade unit 142 of the layer forming member 140 pushes and spreads, in the process It can be noted that many of the short fibers mixed with the resin are aligned in the forward and backward directions while being pushed by the elevating blade. As a result, if the degree of alignment of the short fibers in the unit layer UL is increased, it is of great help in increasing the content of the short fibers when they are laminated under pressure in the inner space of the stamping chamber 120 later.

As shown in the drawing, the press plate 150 is formed in the form of a wide plate having a flat lower surface to press the unit layer UL, and is installed to be able to move up and down and forward and backward on the upper side of the work table 110. do. Also, as shown in FIG. 10 , the pressure plate 150 is installed to change the direction of the unit layer UL while rotating. Such a pressure plate 150 is moved to the stamping chamber 120 in a state in which the unit layer UL, which is semi-cured by ultraviolet irradiation on the work table 110 and has adhesiveness, is attached to the lower surface, and then moves to the inner space thereof. While descending from , the unit layer UL is pressurized and stacked. In the case of the pressure plate 150, since it operates independently as a separate entity from the layer forming member 140, the layer forming member 140 is pressed while the pressing plate 150 presses and laminates with respect to the first molded unit layer. ), it is possible to proceed with an operation of forming a new unit layer UL from the intermediate material MM.

The ultraviolet irradiator 160 serves to semi-harden the unit layer UL loaded on the work table 110 by irradiating ultraviolet rays. The unit layer UL semi-cured by the ultraviolet irradiator 160 has adhesiveness and is attached to the lower surface when the pressing plate 150 is pressed in a close contact state.

The wiper blade 170 is installed to be relatively movable in the front and rear directions with respect to the work table 110 in a state in which the lower end is in contact with the upper surface of the work table 110 . In the embodiment of the present invention, the wiper blade 170 and the work table 110 are relatively moved as the work table 110 moves in the forward and backward directions along the rail R, but the wiper blade 170 moves in the forward and backward directions. It is also possible to install it so that it can be moved to According to the configuration of the wiper blade 170, the unit layer UL molded from the intermediate material MM is attached to the pressure plate 150 and moves from the work table 110, and then the wiper blade (as shown in FIG. 8) 170) can remove the residue of the unit layer UL while sweeping the upper surface of the work table 110. Unit layer (UL) residue swept away by the wiper blade 170 is collected in a collection box 110 provided at the front end of the work table 110 .

Continuing below, a high-strength short-fiber composite manufacturing method made by the above-described high-strength short-fiber composite manufacturing apparatus will be described.

2 is a flowchart for explaining a method for manufacturing a high-strength short fiber composite according to an embodiment of the present invention, and FIGS. 3 to 12 are a series of reference views for explaining a method for manufacturing a high-strength short fiber composite according to an embodiment of the present invention. am.

As shown, in the method for manufacturing a high-strength short fiber composite according to an embodiment of the present invention, a unit layer (UL) formed by mixing short fibers with resin is semi-cured to have adhesiveness, and then a semi-cured unit layer (UL) is formed. To manufacture a high-strength short fiber composite by sequentially pressing and laminating, an intermediate material supply step (S110), unit layer forming step (S120), unit layer semi-curing step (S130), unit layer attachment step (S140), unit It includes a layer pressure stacking step (S150) and a unit layer residue removal step (S160).

In the intermediate material supply step (S110), the slurry dispenser 130 extrudes the intermediate material (MM) in a slurry state in which short fibers are mixed with resin as shown in FIG. will do As described above, carbon fibers are preferably used as short fibers included in the intermediate material (MM).

In the unit layer forming step (S120), as shown in FIG. 4, the intermediate material (MM) supplied to the upper surface of the work table 110 is spread by the layer forming member 140 to form a unit layer (UL) having a certain thickness. will do At this time, the layer forming member 140 is spaced apart at a certain height from the top surface of the work table 110 while the pair of slide parts 141 slide backward (or forward, or back and forth) along the top surface of the work table 110. The raised blade unit 142 sweeps the intermediate material MM in a slurry state to form a unit layer UL having a constant thickness. As such, when the elevating blade unit 142 of the layer forming member 140 sweeps the intermediate material MM while forming the unit layer UL, it can be noted that the single fibers mixed with the resin are naturally aligned in the forward and backward directions there is. As such, the single fibers are aligned in one direction in the unit layer (UL), and as the degree of alignment increases, it has a very positive effect on the increase in strength and also positively affects the increase in the content of single fibers.

If the above-described intermediate material (MM) supply step (S110) and unit layer (UL) forming step (S120) are not performed, the upper surface of the work table 110 is a unit layer (UL) having a predetermined thickness pre-formed through a separate process. put it on In the case of using a unit layer (UL) manufactured through a separate process like this, it is preferable that the unit layer (UL) in which single fibers are aligned in one direction with a high degree of alignment, and the unit layer (UL) in which single fibers are aligned The present invention is not limited to how to prepare.

In the unit layer semi-curing step (S130), as shown in FIG. 5, the ultraviolet irradiator 160 irradiates ultraviolet rays to the unit layer UL located on the upper surface of the work table 110 immediately after being molded in the previous step. As a result, the unit layer UL molded from the intermediate material MM in a slurry state receives ultraviolet rays to become a semi-cured state. At this time, the semi-cured unit layer UL has adhesiveness capable of being attached to the press plate 150 . Here, it is preferable to use an ultraviolet irradiator 160 to semi-cur the unit layer UL, but there is no limitation to using another light irradiator or other means such as a heating device.

In the unit layer attaching step (S140), as shown in FIG. 6, the unit layer (UL) semi-cured by UV irradiation on the work table 110 and has adhesiveness is compressed and attached while the press plate 150 is lowered. do. The unit layer UL attached to the press plate 150 with adhesiveness is moved to the stamping chamber 120 along the press plate 150 and pressurized.

In the unit layer pressure lamination step ( S150 ), as shown in FIG. 7 , the pressure plate 150 moves to the stamping chamber 120 and pressurizes and laminates the unit layer UL attached to the lower surface while descending. In this case, if there is already a unit layer UL that is pressurized in the stamping chamber 120 through the previous process, a new unit layer UL is pressurized and laminated thereon. In this way, when the unit layer (UL) molded in a well-aligned state is pressurized and laminated using the pressure plate 150 and the stamping chamber 120, the content of the single fibers can be increased to 55 vol%, and the tensile strength It becomes possible to increase beyond 500 MPa to 1 GPa or more. Here, while the pressing plate 150 presses and laminates the unit layer UL, the layer forming member 140 forms a new unit layer UL from the intermediate material MM on the work table 110. It is possible to simultaneously perform the work or to simultaneously perform the work of semi-curing the new unit layer UL by irradiating ultraviolet rays with the UV irradiator 160 .

The unit layer residue removal step (S160) proceeds after the unit layer (UL) is moved from the work table 110 while being attached to the press plate 150, and as shown in FIG. 8, the wiper blade 170 While sweeping the upper surface of the work table 110, the residue LR of the unit layer UL remaining after the unit layer UL is formed from the intermediate material MM is removed. To this end, the wiper blade 170 and the work table 110 are moved forward while the lower end of the wiper blade 170 lightly contacts the upper surface of the work table 110 or the work table 110 moves backward. ) is relative to move. As a result, when the wiper blade 170 sweeps the residue LR of the unit layer UL forward, the collection box 110a provided in a concave shape on the front side of the work table 110 collects the residue of the unit layer UL. Residue LR is drawn in and collected.

Subsequently, as shown in FIG. 9, the above-described steps are repeated while the intermediate material (MM) supply step (S110) proceeds once again. As a result, a plurality of unit layers (UL) are pressed and laminated at a high density in the inner space of the stamping chamber 120 to manufacture a high-strength short fiber (F) composite material.

Furthermore, as shown in FIGS. 10 and 11 , when the unit layer UL is pressurized and laminated, the direction of the single fibers F of the nth pressurized and laminated unit layer and (n+1) by the rotation of the press plate 150 Directions of the single fibers F of the second pressure-laminated unit layer UL may be orthogonal to each other. If the directions of the single fibers F of the unit layers UL being stacked in this way are orthogonal to each other, as shown in FIG. 12, the single fibers included in the upper and lower unit layers UL stacked up and down ( F) makes it possible to manufacture a high-strength short fiber composite having a higher strength while forming an intersection structure.

Although preferred embodiments of the present invention have been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be equally applied by appropriately modifying the above embodiment. Therefore, the above description does not limit the scope of the present invention, which is defined by the limits of the following claims.

110: work table 120: stamping chamber
130: slurry dispenser 140: layer forming member
150: pressure plate 160: ultraviolet irradiator
170: wiper blade

Claims (23)

As a method for manufacturing high-strength short fiber composites,
A high-strength short-fiber composite manufacturing method characterized in that a high-strength short-fiber composite is manufactured by semi-curing a unit layer formed by mixing short fibers with resin to have adhesiveness, and then sequentially pressing and laminating the semi-cured unit layers. According to claim 1,
Using a stamping chamber having an upper open inner space, the semi-cured unit layers are sequentially pressed and laminated in the inner space of the stamping chamber, and the inside of the stamping chamber is in a state where the press plate attaches the semi-cured unit layer to the lower surface. A high-strength short fiber composite manufacturing method characterized in that the unit layer is pressed and laminated while descending after being introduced into the space. According to claim 1,
High-strength short fiber composite manufacturing method, characterized in that the short fibers included in the unit layer are aligned in one direction. According to claim 3,
The short fiber is a high-strength short fiber composite manufacturing method, characterized in that the carbon fiber. As a method for manufacturing high-strength short fiber composites,
Semi-curing a unit layer of a certain thickness made by mixing short fibers with resin while being loaded on a work table;
attaching a unit layer that has been semi-cured on the work table and has adhesiveness to the lower surface of the pressing plate; and
relatively moving the pressing plate to the stamping chamber in a state where the semi-cured unit layer is attached to the lower surface; and
Pressurizing and laminating the semi-cured unit layer while the pressing plate is drawn into the inner space of the stamping chamber and descends;
High-strength short fiber composite manufacturing method, characterized in that by repeatedly performing a plurality of unit layers in the inner space of the stamping chamber press-laminated at high density. According to claim 5,
High-strength short fiber composite manufacturing method, characterized in that the light irradiator irradiates light to semi-curing the unit layer in the semi-curing step. According to claim 6,
The light irradiator is a high-strength short fiber composite manufacturing method, characterized in that the ultraviolet irradiator for irradiating ultraviolet rays. According to claim 5,
In order to prepare the unit layer,
supplying an intermediate material in a slurry state in which short fibers are mixed with resin to a work table in a predetermined amount by means of a slurry dispenser;
The step of spreading the intermediate material supplied to the work table by a layer forming member and molding it into a unit layer having a predetermined thickness; high-strength short fiber composite manufacturing method characterized in that it further comprises. According to claim 8,
When the unit layer is attached to the pressing plate and moved from the work table, the wiper blade sweeps the upper surface of the work table to remove the residue of the unit layer remaining after the unit layer is formed from the intermediate material; characterized in that it further comprises Method for manufacturing high-strength short fiber composites. According to claim 9,
A high-strength short fiber composite manufacturing method, characterized in that a collection box is provided on one side of the work table so that the wiper blade can collect the residue of the unit layer swept away. According to claim 9,
While the unit layer is irradiated with ultraviolet rays to semi-harden, the pressing plate simultaneously presses and laminates the semi-cured unit layer beforehand. According to claim 7,
High-strength short fiber composite manufacturing method, characterized in that the single fibers of the unit layer are aligned in one direction. According to claim 12,
When the unit layers are pressurized and laminated, the single fiber direction of the nth pressurized and laminated unit layer and the single fiber direction of the (n + 1)th pressurized and laminated unit layer are in different directions by the rotation of the press plate High-strength short fiber composite manufacturing method, characterized in that. According to claim 13,
When the unit layers are pressure-laminated, the direction of the single fibers of the n-th pressure-laminated unit layer and the single fiber direction of the (n+1)-th pressure-laminated unit layer are orthogonal to each other by the rotation of the pressure plate. Method for producing a high-strength short fiber composite, characterized in that the one. In the twelfth,
The short fiber is a high-strength short fiber composite manufacturing method, characterized in that the carbon fiber. As a high-strength short fiber composite manufacturing device,
A work table on which a unit layer of a certain thickness made by mixing short fibers with resin is loaded;
a stamping chamber installed near the working table in the form of an open top container;
a light irradiator for semi-hardening by irradiating light to the unit layer loaded on the work table; and
A pressure plate for attaching a unit layer that has been semi-cured and having adhesiveness on the work table to the lower surface, moving to the stamping chamber, and pressing and stacking the unit layer while descending in the inner space of the stamping chamber; including
A high-strength short fiber composite manufacturing apparatus capable of pressurizing and stacking a plurality of unit layers at high density in the inner space of the stamping chamber. According to claim 16,
The light irradiator is a high-strength short fiber composite manufacturing apparatus, characterized in that an ultraviolet irradiator for irradiating ultraviolet rays as light. According to claim 16,
a slurry dispenser supplying a predetermined amount of an intermediate material in a slurry state in which short fibers are mixed with resin on the work table;
A layer forming member installed to be horizontally movable along the upper surface of the work table and molded into a unit layer having a certain thickness while spreading the intermediate material supplied to the work table; High-strength short fiber composite manufacturing apparatus further comprising . According to claim 18,
The layer forming member is installed side by side at a distance from each other on the left side and the right side and slides along the upper surface of the work table to form the left and right widths of the unit layer, and crosses between the pair of slide parts High-strength short fiber composite manufacturing apparatus, characterized in that it has a lifting blade portion that is installed to be lifted in the state to form a constant thickness of the unit layer while sweeping the intermediate material at a height spaced apart from the upper surface of the work table. According to claim 18,
In addition to being movably installed to press-laminate the unit layer, the pressurizing plate is rotatably installed so that the attached unit layer can be press-laminated in a rotated state. According to claim 18,
When the unit layer is attached to the press plate and moves from the work table, it further comprises a wiper blade that sweeps the upper surface of the work table and removes residues of the unit layer remaining after the unit layer is formed from the intermediate material. Fiber composite manufacturing equipment. According to claim 21,
High-strength short fiber composite manufacturing apparatus, characterized in that a collection box is provided on one side of the worktable to collect the residue of the unit layer swept by the wiper blade. The method of claim 22,
The collection box is a high-strength light fiber composite manufacturing apparatus, characterized in that formed integrally with the work table.

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