KR101387637B1 - Color printing method for 3-dimentional printer and container thereof - Google Patents

Abstract

The present invention relates to a color printing method for a 3D printer and a container thereof and, more specifically, to a color printing method for a 3D printer and a container thereof, which are characterized in the method of color-printing a 3D object using the principles where the irradiated area is hardened using a phase-changing material, which changes the phase with light. The color printing method of the present invention comprises: a step of preparing a container having an internal space with a predetermined size which is divided into a lower space, a first space, and a second space; a step of filling a predetermined amount of a non-mixing solution in the lower space, and filling the phase-changing material to be positioned in the first space located on the upper part; a step of moving a stage arranged on the second space to the first space via the lower space; a step of irradiating light with a predetermined intensity on the surface area of the phase-changing solution corresponding to the stage to solidify the phase-changing solution on the surface area by the phase change due to the light and then form an object; and a step of lowering the stage to the lower space so that the three-dimensional object in the first space is sunk in the non-mixing solution. As such, a three-dimensional object having multiple colors are able to be produced using the color printing method of a 3D printer, which is characterized in that the phase-changing solution and the non-mixing solution, have a mutually different specific gravity. [Reference numerals] (AA) Light

Description

Color printing method for 3-dimentional printer and Container

The present invention relates to a method and a container for a multicolor output of a 3D printer, and more particularly, to a 3D printer that outputs a 3D object in multicolor using the principle that an irradiated area is cured using a phase change material that is changed in phase by light. A method and container for multicolor output.

3D printer is a technology that is recently developed as a technology to output a three-dimensional shape in a short time.

In general, in order to manufacture a prototype having a three-dimensional solid shape, a wood-based production method and a manufacturing method by CNC milling, etc., which are made by hand, are known depending on the drawings.

However, mock-up manufacturing method is difficult by elaborate numerical control and takes a lot of time, and the manufacturing method by CNC milling is capable of precise numerical control but difficult to process by tool interference.

Therefore, recently, a so-called three-dimensional printing method has been introduced, in which a designer and a designer of a product generates three-dimensional modeling data using CAD or CAM and uses the generated data to produce a prototype of three-dimensional solid shape. 3D printers are used in a wide variety of industries such as industry, life and medicine.

The basic principle of a typical 3D printer is to build a 3D object by stacking thin 2D layers.

That is, the 3D printer method uses SLA (StereoLithography Apparatus) using the principle that the scanned portion is cured by scanning a laser beam on the photocurable resin, and a functional polymer or metal powder is used as the laser beam instead of the photocurable resin in the SLA. There are SLS (Selective Laser Sintering) using the principle of solidifying and molding functional polymer or metal powder by scanning, IM (Inkjet modeling) using thermoplastic resin, 3DP (3 Dimension Printing) using lime powder.

Conventional SLA method is disclosed in US Pat. No. 4,575,330 as a method using a photocurable resin.

That is, as shown in FIG. 1, the UV curing liquid 22 is filled into the rectangular container 21. The filled UV cured liquid 22 is formed of the object 30c on the surface 23 of the area irradiated by the ultraviolet ray 27 irradiated from the light source 26. The formed object 30c forms one 3D object 30 by stacking another object 30b at an appropriate position while moving up, down, left, and right using the elevator platform 29.

However, this conventional method can produce a 3D object in a short time, but since the process of producing and painting the object 30 is performed in the UV-curing liquid 22, color mixing or smearing phenomenon is generated in producing a multicolored object. This has caused a problem of unclear color boundaries.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems, and an object thereof is to provide a method and a container for multicolor output of a 3D printer without mixing or smearing between different colors in printing an object having a multicolor. .

The present invention for achieving the above object comprises the steps of preparing a container in which the internal space of a predetermined size divided into a lower space, a first space and a second space; Filling the lower space with a predetermined amount of the unmixed solution, and filling the phase change solution such that the non-mixed solution and the non-mixed solution are disposed in the first space above the interface; Moving the stage disposed in the second space to the first space through a lower space; Irradiating light of a predetermined intensity to the surface region of the phase change solution corresponding to the stage, and solidifying the liquid through a phase change caused by light to form an object; And lowering the stage to a lower space such that a three-dimensional object is immersed in the unmixed solution, wherein the phase change solution and the unmixed solution have different specific gravity differences. Provide a method.

Preferably, the first space and the second space are divided by a first partition wall.

Preferably, the stage is spaced apart from the surface of the phase change solution at regular intervals and submerged in the phase change solution.

Preferably, the phase change solution of the liquid phase remaining in the object may cause the blurring phenomenon of blurring or mixing of the color boundary at the time of output, so that the object is filled with the non-mixed solution. In the course of passing through the subspace, the liquid phase change solution is removed.

Preferably, the first space is partitioned into a plurality of spaces by a second partition and filled with the phase change solution of different colors.

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 Preferably, in order to impart the colors of the phase change solutions of different colors, dyes introduced from the outside of the vessel are supplied to the phase change solutions existing in the first spaces respectively divided through nozzles.

Preferably, the stage lowered into the lower space filled with the non-mixed solution is moved to a space filled with a phase change solution of a different color among the plurality of first spaces in order to stack a multi-layer object.

In addition, the present invention includes a main body having an inner space divided into an upper space and a lower space at the boundary of the interface of the unmixed solution; A first partition partitioning the upper space into a first space in which a phase change solution is filled and a second space in which a stage is disposed; And at least one second partition wall partitioning the first space so that the phase change solutions having different colors may be respectively filled, wherein the phase change solution and the non-mixed solution have different specific gravity differences. A container for a 3D printer is provided.

Preferably, the lower space is arranged to communicate with the first space and the second space at the same time.

The present invention as described above has the following effects.

Irradiate a phase-change solution with a certain color to generate a part of the object, and move the part of the object to a space filled with the non-mixed solution to remove the liquid phase change material remaining in the object with the non-mixed solution. Then, by repeating the same process in a phase change solution having a different color, when the 3D object is multicolored, an object without color mixing or bleeding may be formed at an interface between different colors.

1 is a schematic diagram showing a conventional 3D output method.
2 is an overall perspective view showing a container according to the present invention.
3 is a cross-sectional view taken along line AA of Fig.
4 is a sectional view taken along line BB of Fig.
5 is a schematic flowchart showing a multi-color output method using the container of FIG.

The objects, features and advantages of the present invention described above will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The 3D printer container 100 according to the present invention includes a main body 110, a first partition wall 120, and a second partition wall 130.

The main body 110 is provided in an enclosure shape having an internal space. Here, the main body 110 may have various shapes such as a circle or a polygon.

Hereinafter, for convenience of description, the rectangular body 110 will be described as an example.

Referring to FIG. 3, the internal space of the main body 110 is divided into an upper space 112 and a lower space 114 through an interface between a non-mixed solution C1 and a phase change solution C2 having different specific gravity. Lose.

Here, the non-mixed solution (C1) is a substance having low viscosity, which can use water and glycerol as a polar solvent capable of hydrogen bonding.

In addition, since the specific gravity and the phase change solution (C2) located in the upper portion is not mixed with each other, the specific gravity is heavier than the phase change solution (C2).

Therefore, the non-mixed solution C1 is located in the lower space 114 of the main body 110 because the specific gravity is heavier than the phase change solution C2.

The phase change solution (C2) consists of a total of three kinds of dyes, solvents, and initiators, and uses dyes as oils, and a solvent capable of radical reaction such as 1,6-Hexanedioldiacrylate (HDDA) or Poly Ethyleneglycol Diacrylate. Use

In addition, Phenylbis (2,4,6-Trimethylbenzoyl) Phosphine Oxide is used as an initiator.

The mixing ratio of the phase change solution (C2) is a trace amount of the dye in 1 g of the initiator in 49 mL of the solvent.

The phase change solution C2 has a property of being cured by light. When the phase change solution C2 is irradiated with light, the phase change solution C2 is solidified to generate an object 160.

In addition, the phase change solution (C2) is located above the non-mixed solution (C1) because the specific gravity is lighter than the non-mixed solution (C1).

The greater the specific gravity difference between the phase change solution (C2) and the non-mixed solution (C1), the better and the difference should be at least 0.1-0.2 mL.

Accordingly, the internal space of the main body 110 is partitioned into an upper space 112 and a lower space 114 via an interface between the unmixed solution C1 and the phase change solution C2.

The upper space is partitioned into a first space S1 in which the phase change solution C2 is filled by the first partition wall 120, and a second space S2 in which the stage 140 is disposed. S1 and the second space S2 are arranged to communicate with the lower space 114 at the same time.

In this case, the first space S1 is partitioned into a plurality of spaces by at least one second partition wall as shown in FIG. 4, and each first space S1 partitioned by the second partition wall 130. Are filled with different phase change solutions (C2). This is to generate a multi-colored object 160 using each phase change solution C2.

In addition, the second space S2 has a stage 140 in which the object 160 in which the phase change occurs in a solid phase is stacked, and the stage 140 is connected to the moving device 150 to move the moving device 150. It moves up, down, left and right by driving.

By using this, the stage 140 moves the phase change solution C2 having a different color and the non-mixed solution C1 filled in the lower space 114, and thus, the phase change material in the liquid phase is removed. It can create multicolored objects without smearing or bleeding.

 A method of outputting a 3D object in multiple colors using the principle that the irradiated area is cured using a phase change material whose phase is changed by light is described as follows.

First, a container 100 having an internal space of a predetermined size is prepared.

As shown in FIG. 2, the container 100 is divided into an upper space 112 and a lower space 114 through an interface between a phase change solution C2 and a non-mixed solution C1.

In this case, the upper space 112 of the container 100 is partitioned into a first space S1 and a second space S2 by the first partition wall 120, and the first space S1 is a second partition wall. It may be partitioned into a plurality of first spaces S1 by 130.

Next, the non-mixed solution C1 and the phase change solution C2 are filled in the lower space 114 and the first space S1. First, the phase change solution C2 and the specific gravity are lowered in the lower space 114. Fill another amount of unmixed solution (C1).

The non-mixed solution (C1) is settled in the lower space 114 because the specific gravity is heavier than the phase change solution (C2) to be filled in the upper portion.

In addition, when the light is irradiated to the first space (S1), a phase change occurs from a liquid phase to a solid phase to fill a phase change solution (C2) of different colors for generating the object 160.

Phase change solutions C2 of different colors are respectively filled in the plurality of first spaces S1 partitioned by the second partition wall 130.

In the present invention, in order to fill the phase change solution (C2) of different colors in the first space (S1), respectively, different colors are mixed by mixing dyes of different colors in the phase change solution (C2) having the same color. After preparing a plurality of phase change solution (C2) having a plurality of phase change solution (C2) having a different color into each of the plurality of first space (S1) or phase having the same color in the first space (S1) After filling the change solution C2, dyes having different colors may be injected through nozzles to have different colors.

As described above, the stage 140 that is disposed in the second space S2 while the phase change solution C2 and the non-mixed solution C1 are respectively filled in the lower space 114 and the first space S1 is not present. The moving device 150 moved by the illustrated driving source passes through the lower space 114 and moves to the first space S1.

At this time, the stage 140 is spaced apart from the surface of the phase change solution (C2) at a predetermined interval.

Next, when the light having a predetermined intensity and wavelength is irradiated to the first space S1 in which the stage 140 is disposed, the phase change solution C2 of the surface region is solidified through phase change by light. The reaction occurs to form the object 160. (1st course)

Subsequently, when the stereoscopic object 160 in the first space S1 is operated to move the submerged body into the non-mixed solution C1, the stage 140 is lowered to the lower space 114, and the object 160 is lowered to the object 160. The phase change solution C2 present is separated from the surface of the object 160 due to the different specific gravity difference between the phase change solution C2 and the non-mixed solution C1 and floats on the interface of the non-mixed solution C1 and the stage ( Above 140, only the solid object 160 is present. (2nd course)

As such, the object 160 unclear or mixes the color boundary when the multiphase output is performed as the phase change solution C2 of the liquid is removed while passing through the lower space 114 filled with the unmixed solution C1. The spreading phenomenon can be prevented.

 Next, the stage 140 lowered into the lower space 114 filled with the non-mixed solution C1 has a phase change of different colors among the plurality of first spaces in order to stack the multi-layered objects 160 having different colors. It moves to the first space S1 filled with the solution C2.

Thereafter, the object 160 having different colors is completed by repeating the first and second processes.

Accordingly, the 3D printer method using the phase change solution (C2) of the present invention finally forms the object 160 without mixing or blurring of colors in generating the object 160 having a multicolor as well as the existing monochromatic output. can do.

100: container 110: main body
112: upper space 114: lower space
S1: first space S2: second space
120: first partition 130: second partition
140: stage 150: moving device
160: object C1: unmixed solution
C2: phase change solution

Claims (9)

Preparing a container in which an internal space of a predetermined size is divided into a lower space and a first space and a second space;
Filling the lower space with a predetermined amount of unmixed solution, and filling the phase change solution with the phase change solution so as to be disposed in the first space above;
Moving the stage disposed in the second space to the first space through a lower space;
Irradiating light of a predetermined intensity to the surface area of the phase change solution corresponding to the stage, and solidifying the phase change solution of the surface area through phase change by light to form an object; and
And lowering the stage to a lower space such that the object stereoscopically formed in the first space is immersed in the unmixed solution.
And the phase change solution and the non-mixed solution have different specific gravity differences. The method of claim 1,
And wherein the first space and the second space are divided by a first partition wall. The method of claim 1,
And the stage is spaced apart from the surface of the phase change solution at regular intervals to be immersed in the phase change solution. 3. The method of claim 2,
And the first space is partitioned into a plurality of spaces by a second partition wall and filled with the phase change solution of different colors. 3. 5. The method of claim 4,
Mixing dyes of different colors to the phase change solution to make a color, and then injecting the phase change solution into each of the first space consisting of a plurality of spaces for the multi-color output of the 3D printer Way. delete 5. The method of claim 4,
The stage, which is lowered into the lower space filled with the non-mixed solution, is moved to a space filled with the phase change solution of different colors among the plurality of first spaces in order to stack the multi-layered object. Way for you. A main body having an inner space partitioned into an upper space and a lower space at an interface of an unmixed solution;
A first partition partitioning the upper space into a first space in which a phase change solution is filled and a second space in which a stage is disposed; And
And at least one second partition wall partitioning the first space so that the phase change solutions having different colors may be filled, respectively.
The phase change solution and the non-mixed solution is a container for a 3D printer, characterized in that the different specific gravity difference. The method of claim 8,
The lower space is a container for a 3D printer, characterized in that arranged in communication with the first space and the second space at the same time.

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