KR102120205B1 - Vacuum injection 3D printer for forming heat dissipation parts - Google Patents

Abstract

The present invention relates to a 3D printer for forming heat dissipation parts serving as heat transfer media to have a three-dimensional shape. The 3D printer includes: at least two supply units (10) configured to respectively store at least two kinds of raw materials constituting the heat dissipation parts, remove air bubbles contained in the raw materials by forming a vacuum therein, and compress the raw materials so as to be discharged by injecting external air; a stirring unit (20) mounted on the supply units (10) to push lower raw materials upwards and circulate the lower raw materials in the vertical direction while rotating the stored raw materials in the horizontal direction, and open and close a flow path to discharge the raw materials stirred by the vertical flow to the outside; an extrusion unit (30) mounted in communication with each of insides of the supply units (10) to mix the discharged at least two kinds of raw materials into a single raw material, and discharge the mixed single raw material at a set speed and a set diameter; and a control module (40) electrically connected to the units (10, 20 and 30) to control operations to shorten the stirring time and the defoaming time for removing the air bubbles by simultaneously forming vacuum while stirring the raw materials.

Description

Vacuum injection 3D printer for forming heat dissipation parts}

The present invention relates to a 3D printer for shaping a heat dissipation component, which is a heat transfer medium, into a three-dimensional shape, and more particularly, by implementing a 3D printer capable of forming a functional raw material having a relatively flow-sensitive characteristic in a stable state, an assembly target It can be customized according to the shape of the parts to improve the precision and completeness of assembly with the parts, and the supply unit forms a vacuum to remove the air bubbles contained in the stored raw materials, thereby emptying the internal structure of the heat dissipation parts by air bubbles. It can be formed tightly without space to prevent defects as well as to secure excellent heat conduction and insulation characteristics, and by rotating the raw material stored in the stirring unit in the horizontal direction, spreading the lower raw material upwards and circulating it in the vertical direction, thereby providing excellent dispersion. It relates to a vacuum-injected 3D printer for molding heat dissipation parts that can improve quality by mixing performance.

In general, in order to cool an electronic component of a central processing unit such as a CPU, a copper or aluminum heat sink (heat sink) that is closely attached to the electronic component and absorbs and diffuses heat is essential. Of course, a cooling fan can be configured to forcibly blow air by a heat sink to cool it, if necessary.

Here, a thermal grease or a thermal pad, which is a heat transfer medium, is indispensable for close contact without voids between the electronic component and the heat sink. Here, the thermal grease is a liquid with a viscosity, and the thermal pad is a soft rubber made of silicone.

Today, due to the miniaturization of electronic devices, heat sinks are also becoming smaller. Due to this, the shape of the heat sink is becoming complicated, such as bending in various directions while being thin so as to satisfy the heat dissipation performance by actively utilizing the space of the electronic device.

Here, the heat sink inevitably causes electric interference or shock by contact with other electronic components in addition to electronic components that directly generate heat. Therefore, it is necessary to attach a thermal pad to each part of the heat sink or electronic component that interferes with each other.

In addition, in order to utilize the case of the electronic device as a heat radiator, a thermal pad is required to be attached to every area where the heat sink and the case are in contact.

Conventionally, the thermal pad or the electronic parts and the thermal pad are cut individually to fit the shape of the case, and the defect rate due to manual labor is high and, above all, there is a problem of wasting labor.

Therefore, there is a need for a method that can be molded in three dimensions according to various shapes of the heat sink so that the heat dissipation component, which is a heat transfer medium such as a thermal pad, can be assembled by covering it without cutting one by one.

On the other hand, the heat transfer medium is required not only excellent heat conduction, but also excellent insulation properties to prevent electrical interference with electronic components. That is, a thermally conductive metal powder is mixed to add thermal conductivity to liquid silicone having insulating properties.

Conventional 3D printers have a problem in that the metal powder is partially concentrated and eventually leads to defects because it cannot flow in a coordinated manner according to the shape and keep the thermally conductive metal powder uniformly dispersed in liquid silicon. In addition, there is a problem that the thermal conductivity is significantly lowered by the empty space due to the air bubbles during extrusion molding with air bubbles.

Korean Registered Patent Publication No. 10-1775622 Korean Patent Publication No. 10-2019-0031959

The present invention has been proposed to solve the above problems, and by implementing a 3D printer capable of forming a functional raw material having a relatively flow-sensitive characteristic in a stable state, it is possible to custom-made according to the shape of the assembly target component. The purpose is to provide a vacuum-injected 3D printer for forming heat-radiating parts that can improve the assembly precision and completeness of the fruit.

In addition, the present invention by forming a vacuum in the supply unit to remove the air bubbles contained in the stored raw material, the inner structure of the heat dissipation parts are formed tightly without empty space by the air bubbles to prevent defects and ensure excellent thermal conductivity and insulation properties. The purpose of the present invention is to provide a vacuum-injected 3D printer for molding heat radiation parts.

In addition, the present invention by rotating the raw material is stored in the stirring unit in the horizontal direction, by spreading the lower raw material upwards and circulated in the vertical direction, excellent in dispersibility and mixing to improve the quality of the vacuum injection molding 3D for heat-radiating parts molding The purpose is to provide a printer.

In addition, the present invention allows the control module to simultaneously form a vacuum while stirring the raw material to shorten the defoaming time to remove the agitation and air bubbles, as well as to form a vacuum at different pressures every set period while stirring the raw material to pulsate. The purpose of the present invention is to provide a vacuum-injected 3D printer for forming heat-radiating parts that can accelerate the discharge action of the inherent bubbles of the raw material through vibrations added to the raw material and double the cohesive force of the raw material.

The present invention relates to a 3D printer for forming a heat dissipation component that is a heat transfer medium in a three-dimensional shape, storing at least two kinds of raw materials constituting at least the heat dissipation component, and forming a vacuum therein to remove air bubbles contained in the raw material, Two or more supply units for injecting external air to press the raw material to be discharged downward; A stirring unit mounted on the supply unit, rotating the stored raw material in a horizontal direction, pumping the lower raw material upwards to circulate in a vertical direction, and opening and closing a flow path to discharge the stirred raw materials in an up-and-down flow to the outside; An extruding unit mounted in communication with the insides of the supply units, mixing the two or more raw materials discharged with a single raw material and discharging the mixed single raw material at a set speed and diameter; It is characterized in that it comprises an; electrically connected to the units, a control module for controlling the operation to shorten the defoaming time to remove the agitation and bubbles by simultaneously forming a vacuum while stirring the raw material.

At this time, the supply unit according to the present invention, an upper and lower narrow type supply hopper for storing a set amount of raw materials; A supply cover mounted to be opened and closed at the top of the supply hopper to seal the inside; A discharge flow path opened to discharge raw materials at a lower center of the supply hopper; A vacuum flow path that opens up and down on one side of the supply cover to discharge the internal air of the supply hopper to form a vacuum; It characterized in that it is configured to be opened up and down on the other side of the supply cover to inject external air into the supply hopper.

In addition, the stirring unit according to the present invention, the cylindrical stirring reflux pipe fixedly mounted to the lower center of the supply cover; It is arranged to be able to rotate and flow up and down in the center of the stirring reflux pipe, the upper end is interposed in the center of the supply cover, and the lower end is inserted into the discharge flow path and the raw material flowing into the lower center of the stirring reflux pipe is moved upward. A stirring screw that pumps up and discharges to the outside of the stirring reflux pipe, and opens and closes the discharge passage according to the vertical flow; A stirring blade mounted on the lower end of the stirring screw and rotating with the stirring screw to stir the raw material stored in the feed hopper in the horizontal direction; A stirring motor mounted to be able to flow up and down in the upper center of the supply cover, fixedly coupled to the stirring screw to add rotational force and to transmit up and down flow force; It is characterized in that it is fixedly mounted on the upper center of the supply cover, coupled to the stirring motor to open and close the cylinder to add up and down flow.

In addition, the stirring reflux pipe according to the present invention is formed in a cylindrical shape having a set height, and is opened in the horizontal direction at the lowermost and uppermost sides, respectively, and a plurality of countercurrent flow paths through which the lower raw material flows into and discharges to the upper outside are formed. The disk is fixedly coupled to the lower end of the stirring screw, and serves as a valve that opens and closes the discharge passage according to the vertical flow of the stirring screw, and the main blade and the auxiliary blade are integrally formed with the stirring blade. The wing is fixedly mounted at the bottom of the stirring screw, surrounds the stirring reflux tube and is formed adjacent to the inner surface of the supply hopper, and the auxiliary wing protrudes horizontally toward the stirring reflux tube at a predetermined interval inside the main wing. It is characterized by being formed.

In addition, the extrusion unit according to the present invention, an extrusion hopper for mixing and storing the raw materials discharged from the supply unit; An extruded cover mounted to be opened and closed at the top of the extrusion hopper to seal the inside; An extrusion nozzle mounted in communication with the inside of the lower end of the extrusion hopper to discharge a mixed raw material with a set diameter; An extrusion flow path receiving two or more openings and discharged raw materials in the extrusion hopper or the extrusion cover; An extrusion screw rotatably mounted inside the extrusion hopper and the extrusion nozzle, mixing raw materials supplied according to rotation with a single raw material and discharging them to the outside; It is characterized in that it is configured to be mounted in the center of the upper end of the extrusion cover, and connected to the extrusion screw to transmit the rotational force.

In addition, the extrusion screw according to the present invention is a large-diameter screw that is arranged in the extrusion hopper to feed the raw materials mixed with a single raw material and transferred to an extrusion nozzle; It characterized in that the small-diameter screw is disposed on the extrusion nozzle to discharge a single raw material to be transported downward; integral or mutually detachable.

In addition, the control module according to the present invention forms a vacuum at different pressures every set period while stirring the raw material to accelerate the discharge action of the bubbles contained in the raw material through vibration added to the raw material due to pulsation and to increase the cohesive force of the raw material. Characterized by doubling.

According to the present invention, by implementing a 3D printer capable of forming a functional raw material having relatively flow-sensitive properties in a stable state, it is possible to custom-made according to the shape of an assembly target component, thereby improving assembly precision and completeness with the component. It works.

In addition, the present invention by forming a vacuum in the supply unit to remove the air bubbles contained in the stored raw material, to form the internal structure of the heat dissipation components without voids caused by air bubbles to prevent defects as well as to ensure excellent thermal conductivity and insulation properties It has the effect.

In addition, the present invention has the effect of improving the quality through excellent dispersibility and mixing by circulating the raw material at the bottom of the stirring unit in the horizontal direction while rotating the stored material in the vertical direction.

In addition, the present invention allows the control module to simultaneously form a vacuum while stirring the raw material to shorten the stirring and defoaming time, as well as to form a vacuum at a set pressure during stirring the raw material to add to the raw material due to pulsation. It has the effect of accelerating the discharge action of the inherent bubbles of the raw material through the vibration, and can double the cohesive force of the raw material.

In addition to the above-described effects, the concrete effects of the present invention will be described together while describing the specific matters for carrying out the invention.

1 is a perspective view showing a 3D printer according to the present invention.
Figure 2 is a partial cross-sectional perspective view showing the entire main part of the 3D printer according to the present invention.
Figure 3 is an exploded view showing the main parts of the 3D printer according to the present invention separately.
Figure 4 is a cross-sectional view showing the entire main part of the 3D printer according to the present invention.
5 and 6 are detailed views showing enlarged main parts of a 3D printer according to the present invention.
7 to 9 is a 3D printer according to the present invention is an operating state showing the stirring and defoaming and extrusion process of the raw material.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this document to specific embodiments, and it should be understood that it includes various modifications, equivalents, and/or alternatives of embodiments of the document. In connection with the description of the drawings, similar reference numerals may be used for similar elements.

Also, expressions such as “first,” “second,” and the like used in this document may modify various components, regardless of order and/or importance, to distinguish one component from another component. It is used but does not limit the components. For example, the'first part' and the'second part' may indicate different parts regardless of order or importance. For example, the first component may be referred to as a second component without departing from the scope of rights described in this document, and similarly, the second component may also be referred to as a first component.

Also, the terms used in this document are only used to describe specific embodiments, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person skilled in the art described in this document. Among the terms used in the present document, terms defined in the general dictionary may be interpreted as having the same or similar meaning in the context of the related art, and have an ideal or excessively formal meaning, unless explicitly defined in this document. Is not interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of the document.

The present invention relates to a 3D printer for forming a heat dissipation component, which is a heat transfer medium, into a three-dimensional shape, as shown in FIGS. 1 and 2, a supply unit 10, a stirring unit 20, an extrusion unit 30, and a control module 40 It is a vacuum-injected 3D printer for molding heat dissipation components with a main configuration.

The supply unit 10 is mounted on a frame constituting a 3D printer as shown in FIG. 1, and is composed of two or more so as to store at least two kinds of raw materials constituting at least heat dissipation components, respectively.

The supply unit 10 forms a vacuum inside to remove air bubbles contained in the raw material, and injects external air to press the raw material to be discharged downward.

That is, the supply unit 10 includes a supply hopper 11, a supply cover 12, a discharge passage 13, a vacuum passage 14, and an injection passage 15 as shown in FIGS.

The supply hopper 11 is formed in a cylindrical shape of the upper and lower ganglia, and has a space for storing a set amount of raw materials.

The supply cover 12 is mounted to be opened and closed so that raw materials can be stored at the top of the supply hopper 11, and when closed, the inside of the supply hopper 11 is sealed.

The discharge flow path 13 is a hole opened to discharge raw materials at the lower center of the supply hopper 11, and a hose connected to the extrusion unit 30 is coupled.

In the discharge passage 13, the lower end of the stirring screw 22, which will be described later, is usually inserted to seal the inside of the supply hopper 11.

The vacuum flow path 14 is a hole opened up and down on one side of the supply cover 12, and a hose connected to a vacuum pump is coupled to the top.

The vacuum flow path 14 forcibly discharges the internal air of the supply hopper 11 to form a vacuum.

The injection passage 15 is a hole opened up and down on the other side of the supply cover 12, and a hose connected to the air pump is coupled.

The injection flow path 15 injects external air into the supply hopper 11 to press the stored raw material to be discharged to the discharge flow path 13.

The stirring unit 20 is mounted on the inside of the supply unit 10 and the upper end of the supply cover 12 as shown in FIG. 2 to stir the raw materials stored in the supply hopper 11.

That is, the stirring unit 20 rotates the stored raw material in the horizontal direction, and pumps the lower raw material upwards to circulate in the vertical direction.

And it serves as a valve to open and close the discharge flow path 13 so that the raw material stirred in the vertical flow is discharged to the outside.

2 to 4, the stirring unit 20 is composed of a stirring reflux pipe 21, a stirring screw 22, a stirring blade 23, a stirring motor 24, and an opening/closing cylinder 25.

The stirring reflux pipe 21 is formed in a cylindrical shape with a set height, and is fixedly mounted at the lower center of the supply cover 12.

The stirring reflux pipe 21 is formed with a plurality of reverse flow passages 21a, which are respectively opened in the horizontal direction at the bottom and top ends as shown in FIG. 5.

That is, the reverse flow path 21a at the bottom is a hole through which the raw material at the bottom stored in the supply hopper 11 is introduced and sucked by the stirring screw 22.

In addition, the upper backflow passage 21a is a hole through which the raw material spread by the stirring screw 22 is discharged to the outside.

The stirring screw 22 is a spiral blade integrally formed with an outer surface excluding the uppermost lower end of the shaft having a set length, and is arranged to be rotatable and vertically flowable in the center of the stirring reflux pipe 21.

That is, the upper shaft of the stirring screw 22 is interposed through the center of the supply cover 12 and coupled with the output shaft of the stirring motor 24, and the lower shaft is inserted into the discharge passage 13.

Here, the disk 22a is fixedly coupled to the lower shaft as shown in FIG. 6. Of course, the disk 22a may be integrally formed with the stirring screw 22.

The disk 22a serves as a valve that opens and closes the discharge passage 13 according to the vertical flow of the stirring screw 22.

In addition, the stirring screw 22 pumps the raw material flowing into the lower center of the stirring reflux pipe 21 upward and discharges it to the outside of the stirring reflux pipe 21 as it rotates.

The stirring blade 23 is fixedly mounted on the lower shaft of the stirring screw 22 and rotates with the stirring screw 22.

That is, the stirring blade 23 stirs the raw material circulated in the vertical direction by the stirring screw 22 in the horizontal direction.

The stirring wing 23 is composed of a main wing (23a) and an auxiliary wing (23b) as shown in FIG.

The main wing 23a is fixedly mounted to the lower shaft of the stirring screw 22 and surrounds the stirring reflux pipe 21 and is formed adjacent to the inner surface of the supply hopper 11.

The auxiliary wing 23b is formed to protrude horizontally toward the stirring reflux tube 21 at a predetermined interval inside the main wing 23a.

The stirring motor 24 is mounted to be able to flow up and down along a column vertically positioned at the upper center of the supply cover 12.

The stirring motor 24 is fixedly coupled to the upper shaft of the stirring screw 22 to add rotational force, and transmits the vertical flow force of the opening/closing cylinder 25.

The opening/closing cylinder 25 is fixedly mounted to a column vertically positioned at the upper center of the supply cover 12.

The opening/closing cylinder 25 flows the stirring motor 24 and the stirring screw 22 up and down according to a signal to open and close the discharge passage 13.

Stirring unit 20 having such a structure is a stirrer screw 22 circulates in the vertical direction of the raw material stored in the supply hopper 11 even with a single stirring motor 24, and the stirring blade 23 stirs in the horizontal direction. , Excellent dispersion and mixing of raw materials, as well as simplified structure and compact size, provide low-cost manufacturing and installation compatibility.

In addition, by opening and closing the discharge flow path 13 through the stirring screw 22 without configuring a separate solenoid valve that opens and closes the discharge flow path 13, there is an advantage of low failure rate and convenient control and maintenance.

The extrusion unit 30 is mounted on an operating arm constituting a 3D printer as shown in FIG. 1, moves according to a coordinate code, and discharges raw materials through a molding bed to mold the heat dissipation component in three dimensions.

The extrusion unit 30 is mounted in communication with the inside of each of the supply units 10, mixes two or more kinds of raw materials discharged as a single raw material, and discharges the mixed single raw material at a set speed and diameter.

That is, the extrusion unit 30 is the extrusion hopper 31, the extrusion cover 32, the extrusion nozzle 33, the extrusion passage 34, the extrusion screw 35, the extrusion motor 36, as shown in Figures 2 to 4 Is made of

The extrusion hopper 31 is a chamber for mixing and storing the raw materials discharged from the supply unit 10, and is formed in an upper and lower strait like the supply hopper 11.

The extrusion cover 32 is mounted on the upper end of the extrusion hopper 31 so as to be opened and closed, and seals the inside when closed.

The extrusion nozzle 33 is mounted in communication with the inside at the bottom of the extrusion hopper 31, and discharges the mixed single raw material to a set diameter.

Here, a heater for heating the discharged raw material to a predetermined temperature may be mounted on the outer surface of the extrusion nozzle 33.

Extrusion passage 34 is to receive the raw material to be discharged by opening two or more to the extrusion hopper 31 or the extrusion cover 32, a hose connected to the discharge passage 13 is coupled.

The extrusion screw 35 is rotatably mounted inside the extrusion hopper 31 and the extrusion nozzle 33.

The extruded screw 35 mixes raw materials supplied according to rotation with a single raw material and discharges them to the outside.

Here, the extrusion screw 35 is a spiral blade formed on the outer surface of the shaft having a set length, such as the stirring screw 22, and is formed to be divided into a large diameter screw 35a and a small diameter screw 35b at the upper and lower ends.

That is, the large-diameter screw 35a is disposed on the extrusion hopper 31 and mixes the supplied raw materials with a single raw material and transfers it to the extrusion nozzle 33.

And the small diameter screw (35b) is disposed on the extrusion nozzle 33 to discharge the single raw material to be transported to the bottom.

The extrusion motor 36 is mounted at the top center of the extrusion cover 32 and is connected to the extrusion screw 35 to transmit rotational force.

The control module 40 is embedded in the body constituting the 3D printer as shown in FIG. 1, and is electrically connected to the units 10, 20, 30 to control the operation of the heat dissipation component in three dimensions.

Here, it is preferable that the control module 40 simultaneously forms a vacuum while stirring the raw materials.

Of course, it can also be operated as a stirring process after defoaming to remove bubbles by forming a vacuum.

However, in this case, since the raw materials are stagnant, it takes a considerable amount of time to remove the inherent bubbles, and in fact, it is difficult to completely remove the bubbles.

On the other hand, when agitation and defoaming are performed simultaneously, the raw material flows, so that the release of the inherent bubbles can be quickly made to shorten the defoaming time.

At this time, it is preferable to form a vacuum at a different pressure every set period.

For example, after forming a strong vacuum pressure every 1 or 3 seconds, the weak vacuum pressure may be repeatedly formed.

That is, pulsation is generated in the discharged internal air, and vibration may be caused to the raw material.

Therefore, it is possible to accelerate the discharge action of the bubbles contained in the raw material through the shaking added to the raw material.

Hereinafter, a process of forming the heat dissipation component by the 3D printer according to the present invention will be described.

First, two or more types of raw materials constituting the heat dissipation component are respectively stored in the supply hopper 11 as shown in FIG. 7, and then the supply cover 12 is covered to seal the inside.

And the stirring motor 24 operates as shown in FIG. 8 to stir the raw materials stored in the supply hopper 11.

At the same time, the vacuum pump is operated while the injection flow path 15 is closed to discharge the internal air of the supply hopper 11 through the vacuum flow path 14 to form a vacuum.

Here, the stirring screw 22 and the stirring blade 23 are rotated in the same direction by the stirring motor 24 to stir the raw materials stored in the supply hopper 11 in the vertical and horizontal directions.

That is, the raw material is sucked into the reverse flow path 21a located at the bottom of the reverse flow pipe 21 and transferred to the upper portion of the reverse flow pipe 21, and the transferred raw material is flowed through the reverse flow path 21a located at the top end. (21) It is discharged to the outside.

Therefore, the raw materials stored in the supply hopper 11 are continuously circulated from the bottom to the top through the stirring screw 22. In addition, the stirring blade 23 stirs the raw material circulated in the vertical direction in the horizontal direction.

In this process, the insulating liquid and the thermally conductive powder constituting the raw material are uniformly dispersed, and bubbles contained in the raw material are discharged through the vacuum flow path 14.

When the degassing and agitation process of removing air bubbles is completed, the operation of the stirring motor 24 and the vacuum pump is stopped and the vacuum flow path 14 is switched to the closed state.

Subsequently, the opening/closing cylinder 25 raises the stirring screw 22 together with the stirring motor 24 to open the closed discharge passage 13.

Then, the air pump injects external air of a predetermined pressure from the upper portion of the supply hopper 11 through the injection channel 15 to press the surface of the raw material downward.

That is, the raw materials stored in each supply hopper 11 due to air pressure are discharged through the discharge passage 13, and the discharged raw materials are introduced into the extrusion passage 34 and stored in the extrusion hopper 31.

When the raw materials are stored in the extrusion hopper 31, the extrusion motor 36 is operated to rotate the extrusion screw 35.

Due to the rotation of the extrusion screw 35, the stored raw materials are evenly mixed with a single raw material and discharged through the extrusion nozzle 33.

Along with the discharge of the raw material, it moves along the arm to form a heat-radiating component having a set shape.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and it is usually in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. It is of course possible to perform various modifications by a person having knowledge of, and these modified embodiments should not be individually understood from the technical idea or prospect of the present invention.

10: supply unit
11: Supply hopper
12: Supply cover
13: discharge passage
14: vacuum flow path
15: Injection flow
20: stirring unit
21: stirred reflux tube
21a: reverse flow
22: stirring screw
22a: Disc
23: stirring wing
23a: main wing
23b: auxiliary wing
24: stirring motor
25: open/close cylinder
30: extrusion unit
31: extrusion hopper
32: extrusion cover
33: extrusion nozzle
34: extrusion flow
35: extrusion screw
35a: large diameter screw
35b: small diameter screw
36: extrusion motor
40: control module

Claims (7)

In the 3D printer for forming a heat dissipation component that is a heat transfer medium in a three-dimensional shape,
Two or more supply units 10 for storing at least two types of raw materials constituting at least heat dissipating parts, forming a vacuum therein to remove bubbles inherent in the raw materials, and injecting external air to press the raw materials to be discharged downward;
A stirring unit that is mounted on the supply unit (10), rotates the stored raw material in a horizontal direction, pushes the lower raw material upwards and circulates in the vertical direction, and opens and closes the flow path to discharge the stirred raw materials in the up-and-down flow to the outside. (20);
An extruding unit 30 mounted in communication with each of the insides of the supply units 10, mixing the two or more raw materials discharged with a single raw material, and discharging the mixed single raw material at a set speed and diameter;
A control module 40 that is electrically connected to the units 10, 20 and 30, and controls the operation to shorten the defoaming time to remove agitation and bubbles by simultaneously forming a vacuum while stirring the raw material;
It includes,
The supply unit 10,
Up and down narrow type supply hopper 11 for storing the set amount of raw materials;
A supply cover 12 mounted to be opened and closed at the top of the supply hopper 11 to seal the inside;
A discharge flow path (13) opened to discharge raw materials in the lower center of the supply hopper (11);
A vacuum flow path (14) opening up and down on one side of the supply cover (12) to discharge the internal air of the supply hopper (11) to form a vacuum;
It is composed of; it is opened up and down on the other side of the supply cover 12, the injection flow path 15 for injecting external air into the supply hopper 11;
The stirring unit 20,
A cylindrical stirring reflux pipe 21 fixedly mounted at the lower center of the supply cover 12;
The stirring reflux pipe 21 is disposed to be rotatable and vertically flowable at the center, and the upper end is interposed in the center of the supply cover 12 and the lower end is inserted into the discharge flow path 13 to rotate the stirring reflux pipe ( A stirring screw 22 that pumps the raw material flowing into the lower center of the upper portion upwards and discharges it to the outside of the stirring reflux pipe 21, and opens and closes the discharge passage 13 according to the vertical flow;
A stirring blade 23 fixedly mounted to the lower end of the stirring screw 22 and rotating with the stirring screw 22 to stir the raw material stored in the supply hopper 11 in the horizontal direction;
A stirring motor 24 mounted to be able to flow up and down in the center of the upper end of the supply cover 12 and fixedly coupled to the stirring screw 22 to add rotational force and transmit vertical flow force;
An opening/closing cylinder 25 fixedly mounted at the center of the upper end of the supply cover 12 and coupled with the stirring motor 24 to add up and down flow force;
Vacuum injection-type 3D printer for molding heat radiation parts, characterized in that consisting of. delete delete According to claim 1,
The stirring reflux pipe 21 is formed in a cylindrical shape having a set height, and is opened in the horizontal direction at the lowermost and uppermost sides, respectively, and a plurality of countercurrent flow paths 21a are formed, through which the lower raw materials flow into the inside and discharge to the upper outside. Become,
The disk 22a is fixedly coupled to the lower end of the stirring screw 22, and serves as a valve for opening and closing the discharge passage 13 according to the vertical flow of the stirring screw 22,
In the stirring wing 23, the main wing 23a and the auxiliary wing 23b are integrally formed.
The main wing 23a is fixedly mounted on the lower end of the stirring screw 22, surrounds the stirring reflux pipe 21 and is formed adjacent to the inner surface of the supply hopper 11,
The auxiliary wing (23b) is a vacuum injection-type 3D printer for forming a radiating component, characterized in that formed horizontally protruding toward the stirring reflux pipe (21) at a predetermined interval inside the main wing (23a).

According to claim 1,
The extrusion unit 30,
An extrusion hopper 31 for mixing and storing raw materials discharged from the supply unit 10;
An extruding cover 32 mounted on the upper end of the extrusion hopper 31 to be opened and closed to seal the inside;
An extrusion nozzle 33 which is mounted in communication with the inside of the lower end of the extrusion hopper 31 to discharge the mixed single raw material to a set diameter;
The extrusion hopper (31) or the extrusion cover (32) is an extrusion flow path (34) receiving the raw material to be opened and discharged;
An extrusion screw (35) rotatably mounted inside the extrusion hopper (31) and the extrusion nozzle (33), mixing raw materials supplied with rotation as a single raw material and discharging them to the outside;
An extrusion motor 36 mounted at the center of the upper end of the extrusion cover 32 and connected to the extrusion screw 35 to transmit rotational force;
Vacuum injection-type 3D printer for molding heat radiation parts, characterized in that consisting of.
The method of claim 5,
The extrusion screw 35
A large-diameter screw (35a) which is disposed on the extrusion hopper 31 and mixes the supplied raw materials with a single raw material and transfers it to the extrusion nozzle 33;
A small-diameter screw (35b) for discharging a single raw material disposed in the extrusion nozzle (33) to be transferred downward;
A vacuum injection type 3D printer for molding of heat dissipation parts, characterized in that it is configured to be integrally or mutually removable.
According to claim 1,
The control module 40 forms a heat dissipation part, characterized in that a vacuum is formed at different pressures every set period while agitating the raw material, thereby accelerating the discharge action of the inherent bubbles of the raw material through vibration added to the raw material due to pulsation. Vacuum injection 3D printer.

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