KR102332072B1 - Compact metal 3D printer - Google Patents

Abstract

The present invention relates to a 3D printer. The present invention provides a 3D printer, which manufactures a 3D molded product as an embodiment, comprising: a chamber unit which performs shape machining; a base unit which supports the chamber unit and forms a space therein; a raw material supply unit which inserts raw material in powder form into the chamber unit; a raw material moving unit which is moved along a guide rail provided inside the chamber and pushes the raw material inserted from the raw material supply unit to move; a mold unit for performing molding of the raw material, on which the raw material moved by the raw material moving unit is lied; a light beam machining unit which radiates light beam on the raw material lied on the mold unit to melt and mold the same; and a control unit which controls the light beam machining unit to manufacture the 3D molded object. The present invention configures each component of the 3D printer in a small size to reduce installation space and economic feasibility.

Description

Compact metal 3D printer

The present invention relates to a 3D printer, and more particularly, to a metal 3D printer that is small and can be easily used in various places.

Conventionally, traditional processing methods such as casting or forging have been used to manufacture three-dimensional molded products. In addition, in order to maintain the quality of the product when using this manufacturing method, it had to be performed by an operator with specialized knowledge.

Recently, a 3D printer is starting to be used as a device for processing a 3D molded product. 3D printers are gradually replacing traditional processing methods because of the advantage that non-professionals can easily produce 3D molded products.

Korean Patent Laid-Open Publication No. 10-2009-0049608 is disclosed as a technology for a three-dimensional printer for manufacturing an article using a metal powder. These 3D printers are large-format and suitable for use in industrial sites.

However, such a conventional 3D printer is too large to produce a small metal article, such as a dental laboratory, is not good to install and costs a lot. Therefore, a specialized 3D printer is required to manufacture a small metal article.

Republic of Korea Patent Publication No. 10-2009-0049608 (2009.05.18)

The present invention provides a metal 3D printer that can save installation space and can be introduced at an economical cost by making each configuration of a 3D printer performing molding using metal powder as a raw material suitable for small size configuration.

Other detailed objects of the present invention will be clearly grasped and understood by experts or researchers in the art through the detailed contents described below.

In order to solve the above problem, the present invention is an embodiment, as an apparatus for processing a three-dimensional molded article, a chamber part in which shape processing is made, a base part supporting the chamber part and having a space therein, and a powder-shaped part in the chamber part A raw material supply unit for inputting raw materials, a raw material moving unit that moves along a guide rail provided inside the chamber unit, pushes and moves the raw material input from the raw material supply unit, and the raw material moved by the raw material moving unit is placed and the raw material is molded It provides a three-dimensional printer including a molding unit, a light beam processing unit for melting and melting by irradiating a light beam on the raw material placed in the molding unit, and a control unit for controlling the light beam processing unit to process a 3D molded product.

Here, the raw material moving part includes a guide rail installed on the inner upper surface of the chamber part, a body member having a guide block coupled to the guide rail and moving along the guide rail, and a blade member coupled to the body and pushing the raw material. may include.

In addition, a sweeper member interposed between the guide rail and the guide block for wiping the guide rail when the guide block moves may be provided.

On the other hand, the 3D printer further includes a clean maintenance unit, and the clean maintenance unit is respectively connected to a suction member having a suction port and a blower member having an exhaust port formed therein, and forms a negative pressure to suck air from the suction port or form a positive pressure to form a positive pressure. A drive unit for discharging air to the outlet, a recovery unit for receiving air from the inlet when the drive unit forms a negative pressure, recovering the raw material powder contained in the air and discharging the remaining air, the drive unit creates a positive pressure It may include a dust collecting unit that receives the air discharged when it is discharged, removes fumes contained in the air and discharges the remaining air, and an exhaust unit that is connected to the dust collecting unit and the recovery unit at the same time to filter and discharge the discharged air.

On the other hand, the raw material moving part may further include a sieve-shaped filtering member having a coupling site formed thereon, coupled to the coupling site, and having a plurality of holes to filter the raw material powder.

On the other hand, the base portion may be opened and closed by having a door, and the door may be opened by using a lower side as a hinge point.

Meanwhile, the molding unit may include a base plate on which raw materials are placed, and the base plate may be detachably formed by a spring action.

According to an embodiment of the present invention, since the raw material moving part for moving the raw material powder moves along the guide rail installed inside the chamber part, it is possible to stably support the raw material moving part with a simple configuration, stable movement of the raw material moving part is possible, and the forming part The powder can be applied evenly.

On the other hand, by installing the guide rail on the upper side inside the chamber part, it is difficult to accumulate fine dust such as fume generated during molding on the guide rail, and smooth movement of the raw material moving part is possible.

In addition, it is possible to remove foreign substances attached to the guide rail by interposing the sweeper member at the point where the guide block provided in the raw material moving part is combined with the guide rail.

On the other hand, by integrating the device that can collect the raw material powder while cleaning and the device that removes the dust present inside the chamber part, and operate it by mode switching, it is possible to reduce space and increase economic efficiency.

In addition, a bonding site is formed in the raw material moving part, and a sieve-shaped filter member having a plurality of holes is formed to filter the raw material powder in this bonding site, so that the raw material moving part is driven back and forth to sieve the raw material powder. )can do. Accordingly, there is no need for a separate sieving equipment, and sieving can be performed in the chamber, thereby reducing dust.

On the other hand, there is an effect of reducing the space required for opening and closing by making the front door provided in the chamber part and the base part of the upper and lower opening type, while preventing the raw material powder from falling on the floor of the workshop and facilitating the collection of the raw material powder.

In addition, by making the molding plate on which the raw material powder is placed in the molding part detachable by the action of a spring, replacement, cleaning and maintenance of the molding plate becomes easy.

Other effects of the present invention will be clearly understood and understood by an expert or researcher in the art through the specific details described below, or during the course of carrying out the present invention.

1 is a perspective view showing a three-dimensional printer according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the 3D printer according to the embodiment shown in FIG. 1;
Figure 3 is a perspective view showing the raw material moving part employed in the embodiment shown in Figure 1;
Figure 4 is a conceptual diagram showing the connection of each component of the clean maintenance unit employed in the embodiment shown in Figure 1;
5 is a view showing the operation of the filtering member and the filtering member employed in the embodiment shown in FIG.
6 is a view showing a molding part applied to the embodiment shown in FIG.
7 is a conceptual diagram illustrating an operation of the 3D printer according to the embodiment shown in FIG. 1 ;

The features and effects of the present invention described above will become more apparent through the following detailed description in relation to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention. will be able Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

Hereinafter, a 3D printer according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present specification, the same and similar reference numerals are assigned to the same and similar components even in different embodiments, and the description is replaced with the first description.

The three-dimensional printer 100 according to an embodiment of the present invention is an apparatus for processing a three-dimensional molded article, and includes a chamber part 1, a base part 2, a raw material supply part 3, a raw material transfer part 4, and a molding part. (5), a light beam processing unit (6) and a control unit (7).

The chamber part 1 is a space in which shape processing is performed, and a base part 2 supporting the chamber part 1 and having a space therein is disposed under the chamber part 1 . The raw material supply part 3 and the molding part 5 are arranged in the inner space of the base part 2 and are communicated with the chamber part 1 to supply the raw material to the chamber part 1 or form a molded article.

The raw material supply unit 3 inputs the raw material in powder form into the chamber unit 1 . The raw material is, for example, a metal powder. On the other hand, the raw material moving unit 4 moves along the guide rail 431 provided on the inside of the chamber unit 1 to push and move the raw material input from the raw material supply unit 3 .

In the forming unit 5, the raw material moved by the raw material moving unit 4 is placed and the forming of the raw material is made. Forming is performed by the light beam processing unit 6, which irradiates a light beam to the raw material placed on the forming unit 5, melts it, and forms it.

At this time, the control unit 7 controls the light beam processing unit 6 to process the entire three-dimensional molded product by moving the forming unit 5 down after the light beam processing unit 6 processes one line.

With such a configuration, the 3D printer can be configured in a small size, and in particular, the configuration of the raw material moving part is simple and stable, and the powder can be evenly applied to the molding part.

Hereinafter, the configuration of each part will be described in detail with reference to the drawings.

The chamber part 1 is a part where the product is molded. The chamber part 1 is disposed on the base part 2 , and the raw material supply part 3 , the raw material transfer part 4 , the molding part 5 and the control part 7 are connected, and the input and molding of the raw material is made.

Referring to the drawings, the chamber part 1 has a hexahedral shape, and consists of a chamber 11 and a door 12 , and the door 12 is hinged to the chamber 11 to open the chamber 11 . . At this time, the door 12 is made to be opened using the upper surface of the front side of the chamber as a hinge point. Accordingly, the space required to open the door 12 can be reduced, and the interior of the chamber 11 can be easily cleaned.

The actuator 421 of the raw material moving part 4 is coupled to the outer rear surface of the chamber 11 . The rotating member 422 coupled to the driving shaft of the actuator 421 is disposed inside the chamber 11 .

A hole is formed in the bottom surface of the chamber 11 , and the raw material supply unit 3 , the forming unit 5 and the raw material recovery unit 9 may be coupled from the right to the left in FIG. 2 . In the raw material recovery unit 9, the raw materials remaining after being filled in the forming unit 5 by the raw material moving unit 4 are recovered.

The base part 2 is disposed below the chamber part 1 to support the chamber part 1 , and each of the components to be described later may be arranged in a space inside the base part 2 .

Referring to the drawings, the base 2 has a hexahedral shape, and includes a base body 21 and a door 22 , and the door 22 is hinged to the base body 21 to be able to open and close. At this time, the door 22 is made to be opened using the lower front surface of the base body 21 as a hinge point.

In this way, it is possible to save space by opening and closing the door in a vertical rotation method, and in particular, by placing the hinge point on the lower side, it is possible to prevent the powder from falling to the floor of the workshop compared to the generally adopted horizontal rotation type door. .

In addition, it is easy to recover the raw material powder scattered in the chamber part and the base part in a state in which both the door of the chamber part and the door of the base part are opened. Even if the raw material powder of the chamber part is separated from the chamber part during the recovery, it falls to the door of the base part, so it is not scattered on the floor, so it is easier to collect it.

The raw material supply unit 3 is coupled to the lower surface of the chamber unit 1 and supplies the raw material by pushing the hole formed on the lower surface of the chamber unit 1 .

The raw material supply unit 3 is coupled to the housing 31 having a space therein so that the input plate 32 is in close contact with the inner wall of the housing 31 . In addition, the input plate 32 may be raised and lowered by a driver such as a linear motor.

A raw material in powder form is placed on the input plate 32 , and the input plate 32 rises to supply the raw material into the chamber 11 through a hole formed in the chamber 11 .

The input plate 32 supplies a certain amount of raw material into the chamber 11 by ascending a certain distance whenever the light beam processing unit 6 works to form a cross-sectional line of the product.

The raw material moving unit 4 moves the raw material supplied from the raw material supply unit 3 and spreads it thinly in the processing area of the forming unit 5 to apply it.

Referring to FIG. 2 , the raw material moving unit 4 includes a powder applying unit 41 , a driving unit 42 , and a guide unit 43 . The powder application unit 41 serves to move and apply the raw material powder 10 , and the driving unit 42 serves to move the powder application unit 41 in the horizontal direction. Meanwhile, the guide unit 43 is installed inside the chamber part 1 and is coupled to the powder application unit 41 to guide the powder application unit.

The powder application unit 41 includes a body member 411 and a blade member 412, and the driving unit 42 includes an actuator 421, a rotating member 422, a belt 423 and a coupling member 424. include

An actuator 421 is mounted outside the chamber 11 , and a driving shaft of the actuator 421 is disposed inside the chamber 11 . A rotating member 422 is coupled to the drive shaft located inside the chamber 11 . Accordingly, the driving of the actuator 421 is transmitted to the rotating member 422 inside the chamber 11, the belt 423 is rotated by the rotating member 422, and a coupling member that moves linearly by the movement of the belt 423 ( The powder application unit 41 is coupled to 424 , so that the powder application unit 41 moves along the horizontal direction of the chamber 11 .

With such a configuration, the structure of the driving unit 42 for driving the powder application unit 41 can be minimized.

On the other hand, the guide unit 43 is made of a guide rail 431 is installed on the inner upper surface of the chamber unit (1).

When described in detail with reference to FIG. 3 , the body member 411 of the powder application unit 41 includes a guide block 413 coupled to the guide rail 431 , while the blade member 412 is coupled thereto. When the body member 411 moves, the guide block 413 can move stably along the guide rail 431 and the blade member 412 pushes and moves the raw material.

Since the guide rail 431 is installed on the upper surface of the chamber unit 1 , a small amount of fine dust such as fume is stacked on the guide rail 431 . Accordingly, smooth movement of the powder application unit 41 can be ensured, and the life and replacement cycle of the guide rail 431 can be lengthened.

Meanwhile, a sweeper member 414 may be interposed at a point where the guide rail 431 and the guide block 413 are coupled. The sweeper member 414 may use wool solidified in a block shape. The sweeper member 414 may be mounted on the guide block 413 , and it is preferable that the guide block 413 and the guide rail 431 be mounted on a surface in contact with each other. Accordingly, it is possible to cleanly wipe off the dust attached to the guide rail 431 .

In addition, a coupling site 415 is formed in the body member 411 of the raw material moving part 4, and a plurality of holes are formed in the coupling site 415 to filter the raw material powder 20. can be combined.

In recovering the raw material powder 10, the recovered raw material powder 10 may be molded and partially mixed in a lumped form. Therefore, it may be considered to filter the raw material powder 10 and reuse it. By coupling the filtering member 20 to the body member 411 and reciprocating the body member 411 in an appropriate section, vibration can be made and the reusable raw material powder 10 can be filtered. 5 shows the filter member and the operation of the filtering member.

In addition, the filtered powder can be dropped into the raw material supply unit 3 , so it can be reused as it is, and since the process is performed in the chamber 11 , there is an advantage in preventing dust.

The molding part 5 is a part that actually processes the product, is coupled to the bottom surface of the chamber part 1 and includes a molding plate 53 capable of vertical movement, and the cross section of the molded product is placed on the raw material disposed on the molding plate 53 . When the line is formed, the forming plate 53 is lowered to form the next cross-sectional line.

The molding unit 5 is coupled to the housing 51 having a space therein similarly to the raw material supply unit 3 so that the molding plate 53 is closely attached to the inner wall of the housing 51 . In addition, the forming plate 53 may be raised and lowered by a driver such as a linear motor.

The raw material in powder form moved by the raw material transfer unit 4 is placed on the forming plate 53 , and a cross-sectional line of the molded product S is formed by the light beam processing unit 6 .

The forming plate 53 descends a certain distance whenever the light beam processing unit 6 works to form a cross-sectional line of the product to form one cross-sectional line corresponding to the position.

Meanwhile, here, the molding plate 53 is coupled to the base plate 52 in a fixing method using a spring 55 as shown in FIG. 6 , and the base plate 52 to which the molding plate 53 is coupled is a housing 51 ) can be used.

Referring to the drawings, the fixing plate 54 is coupled with a spring 55 to one side of the base plate 52 having a 'C'-shaped cross section, which is made up of a lower plate and two side plates, and between the fixing plate 54 and the other side plate. The forming plate 53 is mounted on the.

The molding plate 53 can be mounted while pushing the fixing plate 54 , and after installation is completed, the position is firmly fixed by the action of the spring 55 . Accordingly, the forming plate 53 is made to be detachable by the action of the spring 55 .

In addition, the portion where the spring 55 is disposed can be protected by covering it with the cover 56 , and a sealing member (not shown) is disposed on the cover to prevent powder from flowing into the gap between the cover 56 and the fixing plate 54 . can do.

The metal 3D printer is similar to the welding method and always starts additive manufacturing from the forming plate 53. The forming plate 53 is mainly made of steel and mainly fixed with bolts. In this case, it is difficult to separate the molding plate 53 because a lot of powder is caught in the bolt. According to the above-described configuration, it is easy to separate the molding plate 53, so that the replacement and maintenance of the molding plate 53 are easy. On the other hand, this configuration is advantageous to apply to small equipment.

The light beam processing unit 6 melts the raw material in powder form placed in the forming unit 5 to form a cross-sectional line of the product. The light beam processing unit 6 may use a laser device generally used in a metal 3D printer.

Referring to the drawings, the laser equipment of the light beam processing unit 6 is disposed outside the chamber unit 1, which can make the chamber 11 small, so it is easy to create a low-oxygen environment, and the laser is vulnerable to dust contamination. By locating the chamber part 1 outside, it is possible to place the laser processing head in a clean environment.

The control unit 7 controls the light beam processing unit 6 to process the entire three-dimensional molded product by moving the forming unit 5 down after the light beam processing unit 6 processes one line. In practice, the control unit 7 controls the chamber unit 1, the raw material supply unit 3, the raw material moving unit 4, the forming unit 5, and the light beam processing unit 6 to operate organically. In addition, it can function to switch or control the cleaning mode and the recovery mode in the clean maintenance unit 8 to be described later.

On the other hand, the three-dimensional printer 100 according to an embodiment of the present invention includes a clean maintenance unit 8 that integrates a device capable of cleaning the raw material powder 10 and a device for collecting dust present in the chamber unit 1 . more can be provided.

The clean maintenance unit 8 is a so-called cleaner and dust collector integrated, and may include a driving unit 81 , a recovery unit 82 , a dust collection unit 83 , and an exhaust unit 85 . 4 is a conceptual diagram showing the connection of each component of the clean maintenance unit is shown.

The driving unit 81 is connected to the suction member 30 having the suction port and the blowing member 40 having the exhaust port formed therein, respectively, and sucks air from the suction member 30 by forming a negative pressure or by forming a positive pressure to the blowing member 40 ) to expel air from the The driving unit 81 may include a blower motor.

The recovery unit 82 receives air from the suction member 30 when the driving unit 81 forms a negative pressure, recovers the raw material powder 10 contained in the air, and discharges the remaining air. The recovery unit 82 is interposed between the suction member 30 and the driving unit 81 and may include a powder collector 821 and an on/off valve 822 .

When the user operates the recovery mode, the opening/closing valve 822 of the recovery unit 82 is in an open state. On the other hand, at this time, the opening/closing valve 833 of the dust collecting unit 83 is closed. When the driving unit 81 is operated, the raw material powder 10 is sucked together with the air from the suction member 30 , the powder is recovered through the powder recoverer 821 , and the remaining air is discharged. This air is discharged to the outside through the exhaust unit 85 through the exhaust opening/closing valve 84 that is opened past the driving unit 81 . The exhaust unit 85 filters and discharges the exhausted air.

In this case, the powder recoverer 821 may use a generally known device such as a cyclone powder recoverer.

The dust collecting unit 83 receives the air discharged when the driving unit 81 forms a positive pressure, removes fine dust contained in the air, and discharges the remaining air. The dust collecting unit 83 may include a ventilation member 831 positioned opposite to the blowing member 40 , a dust collector 832 , and opening/closing valves 822 and 833 .

When the user operates the dust collecting mode, the on/off valve 833 of the dust collecting unit 83 is in an open state. On the other hand, at this time, the on-off valve 822 and the exhaust on-off valve 84 of the recovery unit 82 are closed. When the driving unit 81 is operated, air is discharged to the blowing member 40 , and the air inside the chamber 11 is sent to the ventilation member 831 along with fine dust while passing through the inside of the chamber 11 . A dust collector 832 is connected to the ventilation member 831 to collect fine dust in the dust collector 832 , and the remaining air is circulated through the driving unit 81 . In this case, the dust collector 832 may use a generally known dust collector.

These components can be arranged in the space inside the base part 2, and it is possible to clean the raw material powder or remove the dust present inside the chamber part with a compact configuration.

7 is a conceptual diagram illustrating an operation of a 3D printer according to an embodiment of the present invention. The three-dimensional printer of the present invention can be represented in a simplified structure as shown.

The operation of the 3D printer according to the embodiment of the present invention is substantially the same as that of the conventionally well-known 3D printer.

First, the raw material powder 10 is located in the raw material supply unit 3 and is supplied to the chamber 11 by the rise of the input plate 32 .

When the raw material is supplied to the chamber 11 , the powder application unit 41 of the raw material moving unit 4 moves to move the raw material to the forming unit 5 . The powder application unit 41 can move stably along the guide rail 431 of the upper chamber part 1, and the cleaning of the guide rail 431 is performed together by the sweeper member 414 provided in the guide block 413. can

The powder application unit 41 spreads the raw material as thin as about 10 μm to 200 μm so that it is placed on the molding plate 53 of the molding unit 5 .

The raw material remaining after being supplied to the forming unit 5 passes through the forming unit 5 and is collected in the raw material recovery unit 9 and may be recovered by the user.

In this state, the raw material powder 10 is irradiated with a light beam L to sinter or melt the raw material to form it. At this time, it is possible for the user to collect the fumes generated during molding by operating the clean keeping unit 8 in the dust collecting mode.

Through this process, the cross-sectional line of the molded product S is formed, and the raw material remains in the form of a powder in the portion not irradiated with the light beam.

To re-supply the raw material powder 10, the powder application unit 4 is returned to the initial position. Even in this case, the cleaning of the guide rail 431 may be performed by the sweeper member 414 provided on the guide block 413 .

After that, the raw material is supplied again, and the raw material is thinly flattened by the powder application unit 4 and recovered in the raw material recovery unit 9, while the next cross-section line is formed in the molding unit 5 and the powder application unit 4 is again Repeat the movement to the initial position. By repeating this operation several times, a three-dimensional three-dimensional molded product can be produced.

On the other hand, after the completion of several operations, the front doors 12 and 22 of the chamber unit 1 and the base unit 2 are opened to recover the powder. The user operates the clean maintenance unit 8 in the recovery mode to inhale and recover the powder through the suction member 30 , and at the same time clean the inside of the chamber unit 1 .

In addition, after the filter member 20 is mounted on the powder application unit 41, the powder application unit 41 may be operated in a sieving mode to filter the recovered powder. By reciprocating the powder application unit 41 on the raw material supply unit 3, the filtered powder falls to the raw material supply unit 3 and the remaining powder filtered by the filtering member 20 can be discarded or used for other purposes.

On the other hand, when replacement, cleaning, or maintenance of the molding plate 53 is required, the powder remaining in the molding unit 5 is collected and then detached and remounted simply by the action of the spring 55 .

The three-dimensional printer made as described above is not limited to the configuration and method of the embodiments described above, but all or part of each embodiment can be selectively combined so that various modifications can be made. may be

Although the detailed description of the present invention described above has been described with reference to a preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the art will have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

1: chamber part 11: chamber 12: door
2: base 21: base 22: door
3: raw material supply part 31: housing 32: input plate
4: Raw material moving part
41: powder application unit 411: body member 412: blade member
413: guide block 414: sweeper member 415: coupling seat
42: drive unit 421: actuator 422: rotating member 423: belt
424: coupling member
43: guide unit 431: guide rail
5: molded part 51: housing 52: base plate 53: molded plate
54: fixing plate 55: spring 56: cover
6: light beam processing unit
7: control unit
8: clean maintenance part
81: drive unit
82: recovery unit 821: powder recoverer 822: on/off valve
83: dust collection unit 831: ventilation member 832: dust collector 833: on-off valve
84: exhaust on/off valve 85: exhaust unit
9: Raw material recovery unit
10: raw material powder 20: filtering member 30: suction member 40: blowing member
L : light beam S : molded product
100: 3D printer

Claims (7)

As an apparatus for processing three-dimensional molded products,
A chamber part on which shape processing is performed, a base part supporting the chamber part and having a space therein, a raw material supply part for putting a powdery raw material into the chamber part, moving along a guide rail provided inside the chamber part, and the raw material A raw material moving unit that pushes and moves the raw material input from the supply unit, a forming unit in which the raw material moved by the raw material moving unit is placed and forming the raw material, a light beam processing unit that melts the raw material placed in the forming unit by irradiating a light beam, and the above Includes a control unit for controlling the light beam processing unit to process a three-dimensional molded product,
The raw material moving part includes a guide rail installed on the inner upper surface of the chamber part, a body member having a guide block coupled to the guide rail and moving along the guide rail, and a blade member coupled to the body member and pushing the raw material. including,
A sweeper member for wiping both sides of the guide rail is interposed between the guide rail and the guide block when the guide block moves,
The forming part has a forming plate on which the raw material is placed, and the forming plate is formed to be detachable by a spring action.
3D printer. According to claim 1,
A driving unit that is respectively connected to a suction member having an inlet and a blower having an outlet formed therein, and sucks air from the inlet by forming a negative pressure or discharges air to the outlet by forming a positive pressure;
a recovery unit that receives air from the inlet when the driving unit forms a negative pressure, recovers the raw material powder contained in the air, and discharges the remaining air;
a dust collecting unit that receives air discharged when the driving unit forms a positive pressure, removes fumes contained in the air, and discharges the remaining air; and
Clean maintenance unit including an exhaust unit connected to the dust collection unit and the recovery unit at the same time to filter and discharge the exhausted air
A 3D printer further comprising a. According to claim 1,
A bonding site is formed in the raw material moving part,
A sieve-shaped filtering member coupled to the bonding site and having a plurality of holes formed to filter raw material powder
A 3D printer further comprising a. According to claim 1,
The base portion is made to be able to be opened and closed by providing a door,
The door is a three-dimensional printer configured to be opened using the lower side as a hinge point. delete delete delete

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