KR20200010663A - Lamination system for magnesium powder 3D printer with explosion-proof structure - Google Patents

Abstract

According to the present invention, a lamination system for a magnesium powder 3D printer with an explosion-proof structure comprises: a case configured to form an appearance in a state in which the case is equipped with a plurality of components and drawn in and out of a 3D printer; a working box opened upward from the inside of the case and configured to form a printing space in which laser provided from the 3D printer is irradiated to stored magnesium powder; a box lifting unit configured to lift the working box; an output plate configured to form a bottom surface of the working box to support the magnesium powder upwards; a plate lifting unit configured to lift the output plate; an atmosphere creation unit configured to create an inert atmosphere within the printing space; and a powder collection unit configured to store and collect the magnesium powder that is not stored in the printing space.

Description

Lamination system for magnesium powder 3D printer with explosion-proof structure}

The present invention relates to a lamination system for magnesium powder 3D printer having an explosion-proof structure, which is configured to be selectively separated from a 3D printer, and to a lamination system for magnesium powder 3D printer having an explosion-proof structure to improve usability. It is about.

The present invention relates to a lamination system for magnesium powder 3D printer having an explosion-proof structure to prevent explosion during the molding of magnesium powder.

The present invention relates to a stacking system for magnesium powder 3D printer having an explosion-proof structure configured to be movable in a state of preventing explosion by forming an inert atmosphere in the molding space when the molding is completed.

The present invention relates to a lamination system for magnesium powder 3D printer having a powder recovery unit for recovering magnesium powder residues generated during molding so that safety can be improved.

Conventionally, traditional processing methods such as casting and forging have been used to manufacture three-dimensional molded articles. In addition, in order to maintain the quality of the product when using such a manufacturing method had to be carried out by a skilled worker.

Recently, a 3D printer has been used as a device for processing three-dimensional molded products, and vision engineers are gradually replacing traditional processing methods due to the advantage of being able to easily manufacture three-dimensional molded products.

In other words, the 3D printer is a device that produces the actual three-dimensional shape based on the inputted two-dimensional drawing as if printing a letter or a picture, and the 3D printing technology is expanding to the fields of automobile, medical, art, and education, We use extensively for use to make.

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

Stacked 3D printer is to be printed by the method of lamination by the method of curing by laser projection, for example, Republic of Korea Patent No. 10-1801964, 3D laminated printer using a synthetic resin and ceramic powder as shown in FIG. It is.

However, the prior material is a material for making a printed matter, because a slurry composition comprising a ceramic powder, a thermosetting resin, a silane compound, and a solvent is applied, so that shrinkage occurs during drying, thereby insufficient to satisfy high dimensional accuracy.

Accordingly, Korean Patent No. 10-1715124 discloses a powder coating apparatus used for a three-dimensional printer for forming a metal powder and a three-dimensional printer having the same, as shown in FIG. 2.

However, the prior art has the following problems.

That is, although the patent describes using a metal powder as a raw material, it is difficult to prepare a printed matter using a metal powder having a high reactivity with water or oxygen, for example, magnesium powder.

In more detail, magnesium is lighter than aluminum and is used in many aircraft parts. When mixed with other components, magnesium is a material that is also used in aircraft engine parts because of its high temperature resistance.

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

SUMMARY OF THE INVENTION An object of the present invention is to provide a stacking system for magnesium powder 3D printer, which is capable of molding the magnesium powder into a 3D printer.

Another object of the present invention is to provide a stacking system for magnesium powder 3D printer having an explosion-proof structure that can be selectively separated from the 3D printer to improve the ease of use.

It is still another object of the present invention to provide a lamination system for magnesium powder 3D printer having an explosion-proof structure that prevents explosion when forming magnesium powder.

Still another object of the present invention is to provide a lamination system for magnesium powder 3D printer having an explosion-proof structure configured to move in a state of preventing explosion by forming an inert atmosphere in the molding space when molding is completed.

It is still another object of the present invention to provide a lamination system for magnesium powder 3D printers having a powder recovery unit for recovering magnesium powder residues generated during molding so that safety can be improved.

The laminated system for a magnesium powder 3D printer having an explosion-proof structure according to the present invention for achieving the above object is a case capable of forming an appearance with a plurality of parts embedded therein and withdrawing / inserting into a 3D printer, and inside the case. A work box for forming a printing space, which is opened upwards from the upper surface of the magnesium powder and irradiated with a laser provided from a 3D printer, a box elevating unit for elevating the work box, and a bottom surface of the work box to form magnesium An output plate for supporting the powder upward, a plate lifting unit for lifting the output plate, an atmosphere composition unit for forming an inert atmosphere in the printing space, and a powder for collecting and recovering magnesium powder not accommodated in the printing space Characterized in that it comprises a recovery unit.

One side of the case, the wheel for the movement of the case, characterized in that provided with a cover for selectively shielding the printing space.

The plate lifting unit is characterized in that it comprises a support plate for supporting the output plate in the upward direction in the work box and, optionally, the length of the plate lift to lift the support plate in the work box.

The atmosphere composition unit, the gas storage tank for storing the inert gas in the case, the gas guide passage for guiding the flow of the inert gas stored in the gas storage tank, connected to the flow guide flow path and the inside of the printing space and It is characterized in that it comprises a gas outlet for communicating inert gas in the printing space.

The gas outlet may be located at an upper portion of the printing space and disposed at a lower portion than the cover.

The powder recovery unit includes a suction port which is perforated to suck the magnesium powder outside the printing space, a suction motor that generates suction power in the suction port, a powder storage tank for storing the magnesium powder sucked into the suction port, and the powder storage. It characterized in that it comprises a powder guide flow path for communicating the tank and the suction port to form a flow path of the powder.

According to the present invention has an effect that can be molded into a magnesium powder 3D printer.

In addition, the present invention is configured to be selectively separated from the 3D printer has the advantage that the ease of use is improved.

In addition, it is configured to prevent explosion when forming the magnesium powder, it is possible to move in a state that prevents explosion by forming an inert atmosphere in the molding space when the molding is completed.

In addition, there is an advantage that the safety is improved by providing a powder recovery unit for recovering the magnesium powder residues generated during molding.

1 is a perspective view showing the appearance of a 3D multilayer printer disclosed in Republic of Korea Patent No. 10-1801964.
Figure 2 is a perspective view showing the configuration of a powder coating apparatus and a three-dimensional printer having the same used in the three-dimensional printer disclosed in Republic of Korea Patent No. 10-1715124.
Figure 3 is a perspective view showing the front appearance of a stacking system for magnesium powder 3D printer having an explosion-proof structure according to the present invention.
Figure 4 is a perspective view showing the rear appearance of the stacking system for magnesium powder 3D printer having an explosion-proof structure according to the present invention.
Figure 5 is a longitudinal cross-sectional view taken along the line A-A 'of Figure 3 showing the internal structure of the stacking system for magnesium powder 3D printer having an explosion-proof structure according to the present invention.
Figure 6 is a cross-sectional perspective view taken along the line B-B 'of Figure 4 showing the internal structure of the stacking system for magnesium powder 3D printer having an explosion-proof structure according to the present invention.
Figure 7 is a cross-sectional perspective view showing a state in which the output plate of one configuration in the stacking system for the magnesium powder 3D printer having an explosion-proof structure according to the present invention.
Figure 8 is a perspective view of the case removed to show the internal structure in a laminated system for magnesium powder 3D printer having an explosion-proof structure according to the present invention.

Hereinafter, with reference to the accompanying Figures 3 and 4 will be described the configuration of a magnesium powder 3D printer stacking system (hereinafter referred to as "lamination system 100") having an explosion-proof structure according to the present invention.

Figure 3 is a perspective view showing the front appearance of the stacking system 100 for magnesium powder 3D printer having an explosion-proof structure according to the present invention, Figure 4 is a magnesium powder for 3D printer having an explosion-proof structure according to the present invention A perspective view showing the rear appearance of the stacking system 100 is shown.

Prior to this, the terms or words used in this specification and claims should not be construed in the ordinary and dictionary sense, and the inventors may appropriately define the concept of terms in order to best describe their own invention. It should be interpreted as meanings and concepts corresponding to the technical idea of the present invention based on the principle that the present invention.

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

As shown in the drawing, the stacking system 100 according to the present invention is configured to be capable of drawing in and out inside a 3D printer (not shown) to provide a printing space (see reference numeral 122 of FIG. 5), and a case 110. ), The appearance is formed.

The case 110 includes a plurality of components, and the top surface is selectively opened to expose the printing space 122 to the outside.

To this end, a plurality of wheels 112 are provided on a lower surface of the case 110, and a cover 125 is provided at the center of the upper surface. The wheel 112 is configured to allow the stacking system 100 itself to be drawn into the 3D printer, and to be easily drawn out to the outside of the 3D printer after the 3D printing operation.

The cover 125 is positioned on the upper surface of the case 110, and is configured to open the upper upper space of the case 110 upward when selectively removed.

Therefore, the cover 125 may be selectively removed by a user, and if necessary, the cover 125 may further include a configuration for transporting the cover 125 on one side of the 3D printer to complete the movement of the stacking system 100 and completion of the 3D printing work. It may be configured to be automatically removed or shielded depending on the time point.

Powder recovery unit 180 is provided on both sides of the cover 125. The powder recovery unit 180 scatters magnesium powder scattered to the outside of the printing space 122 or scattered on the upper surface of the case 110 when the magnesium powder is stacked in the printing space 122 to which the cover 125 is removed. It is a structure for removing by suction.

That is, the 3D printer is provided with a powder supply unit including a blade for supplying the magnesium powder to the printing space 122 in a flat manner, and the remaining magnesium powder supplied by the powder supply unit is pushed to both sides by the blade to the The powder recovery unit 180 is moved to the vicinity.

At this time, the powder recovery unit 180 can increase the accuracy of 3D printing by sucking the magnesium powder with a suction force to move to a separate space.

Hereinafter, an internal configuration of the stacking system 100 will be described with reference to FIG. 5.

FIG. 5 is a longitudinal cross-sectional view of the AA ′ portion of FIG. 3 showing the internal structure of the stacking system 100 for a magnesium powder 3D printer having an explosion-proof structure according to the present invention.

As shown in the drawing, a printing space 122 is formed on an inner upper portion of the case 110. The printing space 122 is formed by a box-shaped work box 120 having an upper opening, and the laser irradiator of the 3D printer is preferably positioned at a spaced area upward from the work box 120.

An output plate 130 is provided inside the work box 120. The output plate 130 moves in the up / down direction inside the work box 120, and forms a printing space 122 upward to support the magnesium powder and the 3D laminate in the upward direction.

Therefore, the output plate 130 has a plate shape having a predetermined thickness, the outer side is configured to correspond to the inner shape and size of the work box 120 can be lifted in a state of minimizing the loss of magnesium powder. .

The plate lifting unit 140 is installed below the output plate 130. The plate lifting unit 140 is a configuration for lifting the output plate 130 by stretching the length in the lower portion of the output plate 130.

To this end, the plate lifting unit 140 is a support plate 142 for supporting the output plate 130 in the upward direction in the work box 120 and, optionally, the length of the support plate in the work box 120 And a plate elevator 144 for elevating 142.

The support plate 142 is configured to have a shape and size similar to the output plate 130, the lower portion is coupled to the upper portion of the plate elevator 144.

Therefore, the support plate 142 is movable in the up / down direction in the work box 120 according to the change in the length of the plate elevator 144.

The support plate 142 is provided with a sealer 143. The sealer 143 is configured to prevent the inert gas from leaking into the gap between the support plate 142 and the work box 120.

In other words, the stacking system 100 should be formed in an inert atmosphere so as not to contact with air or water as the magnesium powder having a risk of explosion as a 3D printing material, the inert gas for the composition of the inert atmosphere is inside the printing space 122 It should be accepted without leakage.

Therefore, the support plate 142 is provided with a sealer 143 made of a material having an elastic force to contact the inner surface of the work box 120 to block the inert gas from leaking downward through the gap.

The plate lift 144 is fixed to the lower portion to maintain a predetermined position in the case 110, the upper portion is coupled to the lower portion of the output plate 130.

In the embodiment of the present invention, the plate elevator 144 is configured to adjust the phase of the upper end by stretching the length by the rotational force generated when the power supply, the output plate 130 by the extension of the length of the plate elevator 144 As the elevating, the elevating of the output plate 130 supported by the supporting plate 142 may be linked.

That is, when the length of the plate elevator 144 is reduced, the printing space 122 is formed as shown in FIG. 6, and when the length of the plate elevator 144 is increased, the output plate 130 is cased as shown in FIG. 7. It is possible to lift closer to the upper surface of (110).

The box lifting unit 150 is provided on the left / right side of the plate lifting unit 140. The box elevating unit 150 has a configuration for elevating the work box 120, the operation is controlled separately from the plate elevating unit 140.

More specifically, the box lifting unit is a box lifter for elevating the coupling portion 152 by stretching the length in the state coupled to the coupling portion 152 and the coupling portion 152, the working box 120 ( 154).

The coupling part 152 remains firmly coupled to the outer surface of the work box 120, and the lower part of the coupling part 152 is coupled to the upper part of the box lifter 154.

And the box lifter 154 is fixed so that the lower portion maintains a predetermined position in the case 110, when the upper position of the box lifter 154 is variable by moving the coupling portion 152 to the work box 120 It can be moved in the up and down direction.

In addition, the box lift 154 is preferably composed of two or more in order to be able to raise and lower the work box 120, in the embodiment of the present invention the box lift 154 adopts a cylinder.

Therefore, when the work box 120 is moved upward by the action of the box lifter 154, the upper end of the work box 120 is in communication with the lower space of the laser irradiator of the 3D printer to block the inflow of external air. Can be.

At the left / right side of the work box 120, an atmosphere composition unit 160 is provided. The atmosphere composition unit 160 is to create an inert atmosphere in the printing space 122, which will be described in detail with reference to FIGS. 6 and 7.

Figure 6 is a cross-sectional perspective view of the B-B 'portion of Figure 4 showing the internal structure of the stacking system 100 for magnesium powder 3D printer having an explosion-proof structure according to the present invention, Figure 7 exploded in accordance with the present invention A cross-sectional perspective view is shown in which the output plate 130, which is one component, is raised in the stacking system 100 for magnesium powder 3D printer having a prevention structure.

As shown in the drawing, the atmosphere composition unit 160 stores an inert gas in the case 110 and supplies an inert gas to the printing space 122 to prevent explosion of magnesium powder.

To this end, the atmosphere composition unit 160, the gas storage tank 162 for storing the inert gas in the case 110, and the gas guide passage for guiding the flow of the inert gas stored in the gas storage tank 162 And a gas outlet 166 connected to the gas guide passage 164 and communicating with the inside of the printing space 122 to tow inert gas into the printing space 122.

The gas storage tank 162 is configured to store the argon gas in the embodiment of the present invention, by arranging a pair apart in the case 110 to supply an inert gas to the plurality of gas outlet 166.

The gas outlet 166 is located at an upper portion of the printing space 122, and a plurality of gas outlets 166 are disposed at a lower position than the cover 125. More specifically, the gas outlet outlet 166 is located just below the cover 125 is seated, and is formed radially perforated around the inside of the upper portion of the work box 120.

In addition, the pair of gas storage tanks 162 serve to discharge two inert gases from each of four surfaces of the work box 120.

Therefore, the inert gas discharged through the gaseous outlet 166 is heavier than air and thus may be introduced into the printing space 122, and the magnesium powder is irradiated into the printing space 122 with a laser to explode during molding. Can be free from danger.

The gas guide passage 164 is disposed between the gas storage tank 162 and the gas outlet 166 so that both ends thereof communicate with the gas storage tank 162 and the gas outlet 166, respectively.

An inlet 182 is formed outside the gas outlet 166. The suction port 182 is a configuration of the powder recovery unit 180, where the suction force is generated to recover the residual magnesium powder.

Hereinafter, a detailed configuration of the powder recovery unit 180 will be described with reference to FIG. 8.

Figure 8 is a perspective view of the case 110 is removed to show the internal structure in the stacking system 100 for magnesium powder 3D printer having an explosion-proof structure according to the present invention.

As shown in the drawing, a gaseous outlet 166 is provided outside the printing space 122, and a suction port 182 is provided before and after the gaseous outlet 166. The inlet 182 is formed in the shape of a rectangular box open to the top, the inner bottom is formed to be inclined.

That is, the inner bottom surface of the suction port 182 is configured to have a downward slope in the direction in which the powder guide passage 184 is located.

Therefore, the magnesium powder introduced into the suction port 182 can be moved more easily along the inclined surface.

The powder guide passage 184 is connected to the lower end of the suction port 182. The powder guide passage 184 is a configuration for guiding the magnesium powder introduced through the pair of suction ports 182 to the powder storage tank 186 and has a tubular shape.

The powder recovery unit 180 is further provided with a suction motor. The suction motor is located at any one side of the suction port 182, the powder guide flow path 184 and the powder storage tank 186 to generate a suction power when the power supply to the suction port 182 to suck the magnesium powder with the suction power. This is the configuration that allows it.

Hereinafter, the operation of the stacking system 100 configured as described above will be described with reference to FIGS. 4 to 7.

First, the cover 125 is removed from the stacking system 100 in which the cover 125 is covered as shown in FIG. 4 to expose the output plate 130 as shown in FIG. 7.

At this time, the plate lift 144 is in a state in which the length is extended, the support plate 142 is a state in which the output plate 130 is lifted upward.

After the magnesium powder is evenly filled on the upper side of the output plate 130, the length of the plate elevator 144 is gradually reduced while repeating the laser irradiation process, the size of the printing space 122 is increased as shown in FIG. .

Of course, the height of 3D printed products will increase together. In this case, the atmosphere composition unit 160 continuously supplies an inert gas into the printing space 122 to prevent explosion, and the powder recovery unit 180 inhales the remaining magnesium powder to the powder storage tank 186. Will be saved.

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

100. Lamination System 110. Case
112. Wheels 120. Workbox
122. Printing Space 125. Cover
130. Output plate 140. Plate lifting unit
142. Support plate 143. Sealer
144. Plate Lift 150. Box Lift Unit
152. Combined parts 154. Box lift
160. Atmosphere Composition Unit 162. Gas Storage Tank
164. Gas Information Passage 166.
180. Powder recovery unit 182. Suction port
184. Powder guide flow path 186. Powder storage tank

Claims (6)

A case 110 which forms an exterior with a large number of parts embedded therein and is capable of drawing / inserting a 3D printer;
A work box which is opened upward in the case and forms a printing space in which the laser provided from the 3D printer is irradiated to the stored magnesium powder;
A box elevating unit for elevating the work box;
An output plate for forming a bottom surface of the work box and supporting the magnesium powder upwardly;
A plate elevating unit for elevating the output plate;
An atmosphere composition unit for creating an inert atmosphere in the printing space;
Laminated system for magnesium powder 3D printer having an explosion-proof structure characterized in that it comprises a powder recovery unit for receiving and recovering the magnesium powder not accommodated in the printing space.
According to claim 1, At one side of the case,
A wheel for moving the case,
Laminated system for magnesium powder 3D printer having an explosion-proof structure characterized in that the cover is provided to selectively shield the printing space.
According to claim 2, The plate lifting unit,
A support plate for supporting the output plate upward in the work box;
Optionally stretch the length of the stacking system for magnesium powder 3D printer having an explosion-proof structure characterized in that it comprises a plate lift for lifting the support plate in the work box.
The method of claim 3, wherein the atmosphere composition unit,
A gas storage tank storing an inert gas in the case;
A gas guide passage guiding a flow of the inert gas stored in the gas storage tank;
And a gaseous outlet connected to the flow guide passage and communicating with the inside of the printing space to discharge an inert gas into the printing space. 2.
According to claim 4, The gas outlet is located in the upper portion of the printing space,
Laminated system for magnesium powder 3D printer having an explosion-proof structure, characterized in that disposed in a lower position than the cover.
The method of claim 5, wherein the powder recovery unit,
A suction hole perforated to suck the magnesium powder outside the printing space;
A suction motor generating suction force at the suction port,
A powder storage tank for storing the magnesium powder sucked into the suction port;
Laminated system for magnesium powder 3D printer having an explosion-proof structure, characterized in that it comprises a powder guide flow path in communication with the powder storage tank and the suction port to form a flow path of the powder.

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