KR102112167B1 - Magnesium powder delivery system for 3D laminate printers with explosion-proof structure - Google Patents

Abstract

The magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention is a cabinet that shapes an exterior and protects a number of built-in parts, and receives a laser from a laser irradiator installed on one side of the cabinet to produce a three-dimensional printed material. The formed printing space, a powder supply space for storing and supplying the magnesium powder to be partitioned from the printing space and supplied to the printing space, and a powder transfer unit for selectively receiving the magnesium powder in the powder supply space and transferring it to the printing space And, the powder transfer unit is installed, the powder transfer space to provide an activity space, and the atmosphere composition unit for creating the printing space, the powder supply space and the powder transfer space as an inert atmosphere, and sealing the opening of the powder transfer space Sealed door to maintain an inert atmosphere, the powder transfer unit and atmosphere composition oil It is characterized in that it is configured to include a controller that controls the operation of the nip.

Description

Magnesium powder delivery system for 3D laminate printers with explosion-proof structure}

The present invention relates to a magnesium powder transport system for a 3D stacked printer having an explosion-proof structure, which allows a 3D printing of magnesium powder having an explosion risk to be safely and continuously supplying magnesium for a 3D stacked printer having an explosion-proof structure. It relates to a powder delivery system.

The present invention relates to a magnesium powder transport system for a 3D laminated printer having an explosion-proof structure in which a powder supply space, a powder transfer space, and a printing space, which are partitioned from each other, are partitioned from each other, and an inert atmosphere is formed to prevent explosion.

The present invention relates to a magnesium powder transport system for a 3D stacked printer having an explosion-proof structure that prevents contamination of a molded object and blocks an explosion hazard by adopting a pneumatic cylinder as a cylinder for transporting components.

The present invention is a 3D multi-layer printer having an explosion-proof structure that accommodates magnesium powder from a powder supply space and includes a powder transfer unit that moves and inputs the received magnesium powder to the vicinity of the printing space to enable continuous operation of 3D multi-layer printing. It relates to a magnesium powder transfer system.

Conventionally, traditional processing methods such as casting and forging have been used to manufacture three-dimensional molded products. In addition, when using such a manufacturing method, in order to maintain the quality of the product, a worker with professional knowledge had to perform.

Recently, 3D printers are used as devices for processing 3D molded products, and vision experts are gradually replacing traditional processing methods because of the advantage of being able to easily manufacture 3D molded products.

In other words, the 3D printer is a device that produces the actual three-dimensional shape based on the input two-dimensional drawing as if printing a letter or picture, and the 3D printing technology is expanding into the fields of automobile, medical, art, and education, and various models It is used extensively for making purposes.

The principle of the 3D printer can be divided into a cutting type and a stacked type, and most of the 3D printers that are actually applied correspond to a stacked type without material loss.

The stacked 3D printer is a method in which a printed material is completed by laminating through a method of projecting and curing a laser, for example, in Korean Patent Registration No. 10-1801964, a 3D stacked printer using synthetic resin and ceramic powder is disclosed. It is.

However, the prior material is a material for making a printed material, and a composition in a slurry state containing a ceramic powder, a thermosetting resin, a silane compound, and a solvent is applied, and thus it is insufficient to satisfy high dimensional accuracy due to shrinkage during drying.

Accordingly, Korean Patent Registration No. 10-1715124 discloses a powder coating device used in a 3D printer for forming a metal powder as a molding object and a 3D printer having the same.

However, the prior art has the following problems.

That is, although the patent is described as using a metal powder as a raw material, it is difficult to produce a printed material using a metal powder having high reactivity with water or oxygen, such as magnesium powder.

In more detail, magnesium is lighter than aluminum, and is often used in aircraft parts, and when mixed with other components and alloyed, it has excellent high temperature and heat resistance properties and is also used in aircraft engine parts.

However, magnesium having such an advantage is highly reactive with water or oxygen, so there is a risk of explosion, so care must be taken, and the powder coating device shown in FIG. 2 has a three-dimensional printing of magnesium powder due to the risk of explosion because the inside is in communication with the outside. This is impossible.

The object of the present invention is to solve the problems of the prior art as described above, it is possible to safely 3D printing magnesium powder having an explosive risk and transporting magnesium powder for a 3D laminated printer having an explosion-proof structure that can be continuously supplied. In providing a system.

Another object of the present invention is to provide a magnesium powder transport system for a 3D laminated printer having an explosion-proof structure such that a powder supply space and a powder transfer space and a printing space partitioned with each other are partitioned and an inert atmosphere is formed to prevent explosion. In one.

Another object of the present invention, by adopting a pneumatic cylinder as a cylinder for the transport of components to provide a magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure to prevent contamination of molded articles and block the risk of explosion In one.

Another object of the present invention, an explosion-proof structure to accommodate the magnesium powder from the powder supply space, and a powder transfer unit to move and input the received magnesium powder near the printing space to enable continuous operation of 3D laminated printing. It is to provide a magnesium powder delivery system for a 3D laminated printer having a.

Magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention for achieving the above object, a cabinet that forms an exterior and protects a number of built-in parts, and a laser from a laser irradiator installed on one side of the cabinet A printing space in which a three-dimensional printed material is formed upon irradiation, and a powder supply space for storing and supplying magnesium powder to be partitioned from the printing space and supplied to the printing space, and selectively printing after receiving the magnesium powder in the powder supply space A powder transfer unit for transporting to a space, a powder transfer space in which the powder transfer unit is installed and providing an activity space, an atmosphere composition unit for forming the printing space, powder supply space, and powder transfer space with an inert atmosphere, and the powder A closed door that seals the opening of the transfer space to maintain an inert atmosphere, and Characterized in that it comprises a powder transfer unit and a controller for controlling the operation of the atmosphere composition unit.

The powder transfer space is located below the printing space and the powder supply space, and is characterized in that it selectively communicates according to the position of the powder transfer unit.

The powder transfer unit includes a powder storage unit in which magnesium powder is accommodated and stored, a powder supply unit that moves upward / downward to raise or accommodate magnesium powder inside the powder storage unit, and linearly moves the powder storage unit. It characterized in that it comprises a storage unit transfer unit for transporting to the lower portion of the printing space or powder supply space, and the lifting unit for lifting the powder storage unit and the powder supply unit at the same time.

The powder supply unit and the storage unit transfer unit are characterized by including an air cylinder.

It is characterized in that a powder coating unit is provided inside the printing space.

On one side of the cabinet, a powder recovery unit for recovering the magnesium powder inside the powder supply space and the printing space is provided.

According to the present invention, the powder supply space and the powder transfer space and the printing space, which are partitioned from each other, are partitioned from each other, but by creating an inert atmosphere, there is an advantage of safely 3D printing the magnesium powder having an explosion risk.

In addition, since the magnesium powder can be continuously supplied, productivity is improved, and a cylinder for transporting components is adopted as a pneumatic cylinder, which has an effect of preventing contamination of molded products.

In addition, it is to provide a magnesium powder delivery system for a 3D laminated printer having a.

Another object of the present invention, an explosion-proof structure to accommodate the magnesium powder from the powder supply space, and a powder transfer unit to move and input the received magnesium powder near the printing space to enable continuous operation of 3D laminated printing. It is to provide a magnesium powder delivery system for a 3D laminated printer having a.

1 is a perspective view showing the appearance of a 3D laminated printer disclosed in Korean Patent Registration No. 10-1801964.
Figure 2 is a perspective view showing the configuration of a powder coating device used in the 3D printer disclosed in Republic of Korea Patent No. 10-1715124 and a 3D printer having the same.
Figure 3 is an external perspective view showing a magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention.
Figure 4 is a perspective view showing an open powder transfer space as a component in the magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention.
Figure 5 is a perspective view showing by cutting the first half to show the internal structure in the magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention.
Figure 6 is a longitudinal cross-sectional view showing a state in which the powder supply unit and the powder supply space in the magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention.
7 is a longitudinal sectional view showing a state in which the powder supply unit and the powder supply space are separated from the magnesium powder transport system for a 3D laminated printer having an explosion-proof structure according to the present invention.
Figure 8 is a longitudinal cross-sectional view showing a state in which the powder supply unit is moved to the lower side of the printing space in the magnesium powder transport system for a 3D laminated printer having an explosion-proof structure according to the present invention.
Figure 9 is a longitudinal cross-sectional view showing a state in which the powder supply unit and the printing space in the magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention.

Hereinafter, a configuration of a magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to the present invention (hereinafter referred to as 'transfer system 100') will be described with reference to the accompanying FIG. 3.

3 is an external perspective view showing a magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure according to the present invention.

Prior to this, the terms or words used in the specification and claims should not be interpreted in a conventional and lexical sense, and the inventor can appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle that it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Therefore, the embodiments shown in the embodiments and the drawings described in this specification are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, and various equivalents can be substituted at the time of application. It should be understood that there may be water and variations.

As shown in the figure, the transfer system 100 is configured to store a certain amount of magnesium powder, then transfer a large amount in a direction in which the laser irradiator (see 155 in FIG. 5) is located, and supply a predetermined amount upward to the lower side of the laser irradiator.

In addition, the transfer system 100 is operated in an inert atmosphere so that the magnesium powder does not come into contact with air or water as the explosive magnesium powder is used as a 3D printing material.

That is, the transfer system 100 is formed of an outer shape by a cuboid-shaped cabinet 110, and a number of parts are built in the cabinet 110.

In addition, a plurality of spaces are partitioned inside the cabinet 110, and the lower front is opened to the front to provide a closed door 112.

The sealing door 112 is configured to seal so that the lower portion of the cabinet 110 can be cut off from the outside, and is configured to shield the front of the powder transfer space (see reference numeral 120 in FIG. 4), which will be described below. .

In addition, the sealed door 112 is preferably configured to be selectively opened by the user when necessary.

The controller 130 is provided on the right side of the cabinet 110. The controller is a configuration for controlling the operation of a number of components of the transfer system 100, and simultaneously performs a function of displaying the operation status of the transfer system 100.

Hereinafter, a detailed configuration of the transfer system 100 will be described with reference to FIGS. 4 and 5.

FIG. 4 is a perspective view showing the powder transfer space 120 which is a component in the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure according to the present invention, and FIG. 5 shows the present invention. In the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure, a perspective view is shown in which a front portion is cut out to show the internal structure, and FIG. 4 shows a state in which the sealed door 112 is removed for convenience of explanation. Shown.

As shown in the figure, the powder supply space 140 is provided at the upper left of the cabinet 110. The powder supply space 140 is a pre-stored magnesium powder to be manufactured in three dimensions by the action of a laser irradiator, and is selectively opened to be put into the packaging state provided by the powder supplier. It is configured to remove the packaging to remove the magnesium powder.

In addition, the magnesium powder has a risk of explosion when it comes into contact with air, so the glove 142 is located on the front surface of the powder supply space 140. The glove 142 is configured to freely and safely handle the magnesium powder container inside the powder supply space 140 in a state where the user's hand is accommodated like a glove, and is configured to be selectively shielded by a stopper This is preferred.

A transparent window 144 is positioned above the glove 142. The transparent window 144 is configured to allow the user to visually check the inside from the outside of the powder supply space 140 when handling the magnesium powder.

The powder supply space 140 has a central bottom surface perforated to form a first communication hole 146, and the magnesium powder may be dropped downward through the first communication hole 146.

In addition, the first communication hole 146 is selectively shielded by the sealing hole 148 so that the powder supply space 140 and the powder transfer space 120 can be cut off from each other.

An inert atmosphere is formed in the powder supply space 140, the powder transfer space 120, and the printing space 150 by an atmosphere composition unit.

On the right side of the powder supply space 140, a printing space 150 is provided. The printing space 150 is a space where a laser irradiator is provided on the upper side of the interior, where 3D printing is actually performed.

Looking at the printing space 150 in detail with reference to FIG. 5, a printing unit 151 is provided at the center of the bottom of the printing space 150. The printing unit 151 is configured to allow the magnesium powder to be cured by a laser irradiated from the upper side while rising by a certain height in the upward direction, and the magnesium powder is evenly covered by a predetermined thickness on the upper side and the laser is irradiated in this state. do.

The second communication hole 152 is located on the right side of the printing unit 151. The second communication hole 152 is a place to wait before the magnesium powder is supplied to the printing unit 151, the magnesium powder can be supplied to the printing unit 151 by the powder coating unit moving in the left / right direction. Will work.

The second communication hole 152 is perforated in a downward direction to communicate with the powder transfer space 120. In addition, the second communication hole 152 may be supplied with magnesium powder by communicating with the inside of the powder transfer unit 160, which will be described below, through a communication hole.

On the left side of the printing unit 151, a powder recovery unit 154 is perforated. The powder recovery unit 154 is configured to be evenly spread on the upper side of the printing unit 151 by a powder coating unit (not shown) and the remaining magnesium powder may fall downward, wherein the powder recovery unit 154 is It is collected in communication with the powder recovery unit.

A powder transfer unit 160, which is a main component of the present invention, is provided below the printing space 150. The powder transfer unit 160 is a configuration that selectively receives the magnesium powder in the powder supply space 140 and then transfers it to the printing space 150, and linearly moves in the left / right direction inside the powder transfer space 120. , The upper part can be moved up and down.

The powder transfer unit 160 may be located at the lower side of the powder transfer space 120 or the printing space 150 by transferring in the left / right direction, and the first communication hole 146 or the first communication hole 146 may be changed because the position of the upper portion is variable. It is possible to selectively communicate with the two communication holes 152.

To this end, the powder transfer unit 160, the powder storage unit 161, the magnesium powder is accommodated and stored, and moves upward / downward to raise or accommodate the magnesium powder inside the powder storage unit 161. The powder supply unit 162 and the storage unit transfer unit 164 for linearly moving the powder storage unit 161 to transfer it to the printing space 150 or the powder supply space 140, and the powder storage unit 161 and It comprises a lifting unit 166 to elevate the powder supply unit 162 at the same time.

The powder storage unit 161 has a hopper shape with a narrower cross section as it goes down, and a powder supply unit 162 is provided below the second communication hole 152. The powder supply unit 162 serves to push up the magnesium powder supported on the upper side into the printing space 150 by having the upper portion of the elevating portion corresponding to the inner size of the second communication hole 152.

The powder storage unit 161 and the powder supply unit 162 are configured to be lifted integrally by the lifting unit 166. Therefore, the upper end of the powder storage unit 161 is brought into contact with the lower surface of the second communication hole 152 by the operation of the lifting unit 166, so that the powder can be supplied upward.

The storage unit transfer unit 164 is configured to linearly reciprocate the lifting unit 166, the powder storage unit 161, and the powder supply unit 162 at the same time in the left / right direction, and ball screws and LM guide bearings are adopted. do.

On the other hand, the left side of the powder supply unit 162 is provided with a printing unit 168. The printing lifting unit 168 is a configuration for lifting the printing unit 151, and the phase of the top of the 3D printed material should be changed due to the characteristics of being gradually stacked and printed by the action of the laser irradiator.

To this end, the printing unit 168 is provided to configure the printing unit 151 to be elevated.

The printing space 150, the powder supply space 140 and the powder transfer space 120 are in communication with the atmosphere composition unit. The atmosphere composition unit is configured to supply argon gas to the powder supply space 140, the powder transfer space 120, and the printing space 150, and each space acts to enable selective supply of argon gas.

Meanwhile, the air cylinder is adopted for both the lifting unit 166, the printing lifting unit 168, and the powder supply unit 162. This is to prevent contamination and explosion of magnesium powder.

Hereinafter, with reference to the accompanying Figures 6 to 9 of the transfer system 100 configured as described above Explain the action.

Figure 6 is a longitudinal cross-sectional view showing a powder supply unit and the powder supply space 140 in communication with the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure according to the present invention, Figure 7 is the present invention It is a longitudinal cross-sectional view showing a state in which the powder supply unit and the powder supply space 140 are separated from the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure.

And Figure 8 is a longitudinal cross-sectional view showing a state in which the powder supply unit moved to the lower side of the printing space 150 in the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure according to the present invention, Figure 9 is the present invention It is a longitudinal cross-sectional view showing the powder supply unit and the printing space 150 communicated in the magnesium powder transfer system 100 for a 3D laminated printer having an explosion-proof structure.

First, as shown in FIG. 6, the powder transfer unit 160 is located under the powder supply space 140, and the powder storage unit 161 is in a state of communicating with the first communication hole 146. Therefore, the magnesium powder in the powder supply space 140 can be supplied to the powder storage unit 161 by the user.

Thereafter, the first communication hole 146 is closed by a sealing hole 148, and the powder storage unit 161 is separated from the first communication hole 146 in FIG. 7.

Then, by the action of the storage unit transfer unit 164, the powder storage unit 161 is moved to the right direction as shown in Figure 8 with the powder supply unit 162 and the lifting unit 166.

At this time, the powder storage unit 161 is positioned below the printing space 150.

Thereafter, the elevating portion 166 is extended to communicate the upper end portion of the powder storage portion 161 with the second communication hole 152.

Therefore, the magnesium powder contained in the powder storage unit 161 can be supplied upward through the second communication hole 152.

The magnesium powder supplied in the upward direction through the second communication hole 152 is supplied to be spread over a certain thickness in the left direction by the powder coating unit, and at this time, it is also applied to the upper surface of the printing unit 151.

In this state, when the laser irradiator irradiates the laser, a 3D printed material is formed by a predetermined height.

In addition, the magnesium powder, which is not irradiated with the laser from the laser irradiator and maintains the powder state, may be dropped in the downward direction through the powder recovery unit 154 and stored in the powder recovery unit.

The scope of the present invention is not limited to the embodiments illustrated above, and many other modifications based on the present invention will be possible to those skilled in the art within the technical scope as described above.

100. Magnesium powder transfer system 110. Cabinet
112. Closed door 120. Powder transfer space
130. Controller 140. Powder supply space
142. Glove 144. Transparent Window
146. First communication hole 148. Closed
150. Printing space 151. Printing section
152. Second communication hole 154. Powder recovery unit
160. Powder transfer unit 161. Powder storage unit
162. Powder supply section 164. Storage section transfer section
166. Elevator 168. Printed Elevator

Claims (6)

A cabinet that shapes the exterior and protects a number of built-in parts,
A printing space in which a 3D printed material is formed by receiving a laser from a laser irradiator installed on one side of the cabinet,
A powder supply space for storing and supplying magnesium powder to be partitioned from the printing space and to be supplied to the printing space;
A powder transfer unit for selectively receiving the magnesium powder in the powder supply space and transferring it to the printing space;
A powder transfer space in which the powder transfer unit is installed, provides an activity space, is located below the printing space and the powder supply space, and selectively communicates with the powder transfer unit according to the position of the powder transfer unit;
An atmosphere composition unit for forming the printing space, the powder supply space, and the powder transfer space with an inert atmosphere,
And a closed door to maintain the inert atmosphere by sealing the opening of the powder transfer space,
A controller for controlling the operation of the powder transfer unit and the atmosphere composition unit
Magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure, characterized in that it comprises.
delete According to claim 1, The powder transfer unit,
A powder storage unit for storing and storing magnesium powder,
A powder supply unit moving upward / downward to increase or accommodate the magnesium powder inside the powder storage unit;
A storage unit transfer unit for linearly moving the powder storage unit to transfer it to the printing space or below the powder supply space;
Magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure, characterized in that it comprises a lifting unit for lifting the powder storage unit and the powder supply unit at the same time.
[4] The magnesium powder transport system for a 3D laminated printer having an explosion-proof structure according to claim 3, wherein the powder supply unit and the storage unit transport unit include an air cylinder.
The magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure according to claim 4, wherein a powder coating unit is provided inside the printing space.
According to claim 5, One side of the cabinet,
Magnesium powder transfer system for a 3D laminated printer having an explosion-proof structure, characterized in that a powder recovery unit for recovering the magnesium powder inside the powder supply space and the printing space is provided.

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