WO2017043747A1

WO2017043747A1 - 3d printer and method for manufacturing 3d object

Info

Publication number: WO2017043747A1
Application number: PCT/KR2016/007370
Authority: WO
Inventors: 임은석; 임하정
Original assignee: 임은석; 임하정
Priority date: 2015-09-08
Filing date: 2016-07-07
Publication date: 2017-03-16
Also published as: KR101725658B1; KR20170030109A

Abstract

The present invention relates to a 3D printer and a method for manufacturing a 3D object capable of manufacturing a 3D object by using continuous liquid spreading production (CLSP). A 3D printer according to an embodiment of the present invention comprises: a resin container for accommodating a photocurable resin; a resin supply unit for supplying the photocurable resin through a fluid supply path connected to a hole formed at the bottom of the resin container; a base plate provided with a fluid tube which is placed at a predetermined height from the bottom of the resin container and capable of ejecting the photocurable resin, wherein a resin reservoir capable of storing the photocurable resin is formed between the bottom of the resin container and the base plate; and a light irradiation unit for irradiating light onto the base plate.

Description

3D printer and 3D object creation method

The present invention relates to a three-dimensional printer and a three-dimensional object manufacturing method, and more particularly, to a three-dimensional printer that can produce a three-dimensional object by using a continuous liquid spreading (CLSP) by a solution spreading and It relates to a three-dimensional object manufacturing method.

In general, in order to produce a prototype having a three-dimensional solid shape, there are a mock-up manufacturing method which is performed manually by hand, and a manufacturing method by CNC milling through computer control depending on the design drawing.

Such mock-up manufacturing method is difficult to precisely control numerical values because it is made by hand, and it does not exactly match the design drawings, and it takes quite a lot of time, and the manufacturing method by CNC milling enables precise numerical control, but tool interference There was a disadvantage that there are many shapes that are difficult to process.

Due to such drawbacks, a three-dimensional printer method has recently emerged in which designers and designers of products can directly produce three-dimensional prototypes using three-dimensional modeling generated by computers. A related prior art document is Patent No. 10-1504419.

The printing method of the three-dimensional printer can be largely classified into a material extrusion method, a photopolymerization method, a material injection method, an adhesive injection method, a powder lamination melting method, a high energy direct irradiation method and the like. Each of the six three-dimensional printing methods has advantages and disadvantages.

In recent years, photopolymerization type 3D printers have become popular.

Conventional photopolymerization three-dimensional printers consist of a process of performing curing, then removing the cured object, coating it again with a curing liquid, and performing the curing.

However, in the conventional process as described above, the problem takes a long time, and when the curing plate is pulled up in the delaminating process, a vacuum is generated in the liquid space inside the hardened portion, which is inevitably drawn to the bottom glass surface. In addition, due to the method of hardening the data of the surface cut vertically in three directions in one direction, the speed is faster than that of the material extrusion method, but the liquid that is hardened on the same surface must be the same. It is impossible to express.

Therefore, in recent years, researches on three-dimensional printers that can solve three-dimensional printing faster and partially express different textures and colors when performing photopolymerization-based three-dimensional printing have been solved in the Delaminating process. It is necessary.

An object of the present invention is to solve the problem that rapid three-dimensional printing is possible and vacuum is generated in the internal liquid space of the hardened portion in the delaminating process, by continuous liquid spreading production (CLSP). The present invention provides a solved three-dimensional printer and a three-dimensional object manufacturing method using the three-dimensional printer.

According to an embodiment of the present invention to achieve the above object, a resin container that is accommodated photocurable resin; A resin supply unit supplying the photocurable resin through a fluid supply path connected to a hole formed in a bottom of the resin container; A base plate having a fluid tube positioned at a predetermined height from the bottom of the resin container to eject the photocurable resin; and a resin storage part capable of storing the photocurable resin between the bottom of the resin container and the base plate. Formed; And a light irradiation part for irradiating light onto the base plate.

According to an embodiment of the present invention to achieve the above object, to produce a three-dimensional object by using a three-dimensional printer comprising a resin container and a base plate formed in a fluid tube located at a predetermined height from the bottom of the resin container A method, comprising: supplying a photocurable resin from the bottom of the resin container through a resin supply portion; Irradiating light onto the photocurable resin ejected through the fluid tube of the base plate using a light irradiator; And controlling light irradiation such that light is not irradiated to the fluid pipe region formed on the base plate.

In the three-dimensional printer and the three-dimensional object manufacturing method according to an embodiment of the present invention, using a continuous liquid spreading production (CLSP) by the spread of the solution of the conventional photopolymerization 3D printing method (delaminating) In addition to solving the problem of vacuum generation in the internal liquid space of the hardened part, the part of the object to be manufactured can be freely made with different texture materials or different colors.

Further, according to one embodiment of the present invention, when the photocurable resin is discharged through the fluid tube inside the three-dimensional object (stereoscopic sculpture), and the discharged photocurable resin is spread to the horizontal plane by the surface tension, the fluid tube portion is By using the bottom-up method of making 3D objects while hardening the remaining parts, 3D objects can be produced quickly.

1 is a view showing a three-dimensional printer according to an embodiment of the present invention.

FIG. 2 is a plan perspective view of the A-A cross section of FIG. 1.

FIG. 3 is a plan perspective view of the section B-B of FIG. 1. FIG.

4 is a diagram for describing a method of growing a 3D object using the 3D printer of FIG. 1.

5 to 6 are views showing a three-dimensional printer with a plurality of resin supply units.

[Description of the code]

100, 500, 600: 3D printer

110, 510, 610: resin container

120, 521, 522, 621, 622: resin supply unit

130, 530, 630: base plate

135: support

141 ~ 14N, 5411 ~ 541N, 5421 ~ 542N, 6411 ~ 641N: Auxiliary material input section

150, 550, 650: light irradiation unit

Hereinafter, a three-dimensional printer and a three-dimensional object manufacturing method according to an embodiment of the present invention will be described with reference to the drawings.

As used herein, the singular forms "a", "an" and "the" include plural forms unless the context clearly indicates otherwise. In this specification, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some steps It should be construed that it may not be included or may further include additional components or steps.

The three-dimensional printer according to an embodiment of the present invention described below is a three-dimensional printer of the photopolymerization type (PP, Photo Polymerization) type. Photopolymerized three-dimensional printers use photopolymers (such as photocurable resins) as printing materials.

A photopolymer is a polymer in which physical properties change when light (ultraviolet or visible light) is irradiated. The photopolymer, which appears to be in the form of such a change in physical properties, is used as a material in 3D printing because cross-linking in the polymer occurs when irradiated with light. Photopolymerization is the presence of monomers, oligomers, and photocatalysts, which results in cross-link reactions when light is irradiated, resulting in a hardened polymer. This process is called "curing".

There may be a variety of mechanisms for photocuring, which are divided into SLA (Stereolithography) and DLP (Digital Light Processing).

SLA-type printers are called vat- (photo) polymerization. The photopolymer is filled into a bath called Vat, and the solidification is irradiated with a laser beam to a desired portion on a horizontal plane. The polymer exposed to the beam undergoes photocure, which hardens and the remainder remains liquid. This is done by lowering the piston in the middle and repeating the same work on the horizontal plane above it. Other methods of causing photo curing may be used.

The DLP type 3D printer is not a scanning method but a method of photocuring by sending information on a horizontal plane at a time using a beam projector (DLP). The DLP method has an advantage that the scanning speed is faster. By sending information on one side at a time, it does not require time for scanning, so it can be processed quickly. When the reaction speed of the photopolymer is sufficient, the printing speed can be enormous.

A three-dimensional printer according to an embodiment of the present invention described below performs curing by the DLP method. In addition, in the present specification, the 3D object and the three-dimensional object may be used in the same sense as the object produced through the 3D printer.

As shown, the 3D printer 100 may include a resin container 110, a resin supply unit 120, a base plate 130, auxiliary material input units 141 to 14N, and a light irradiation unit 150. .

The resin container 110 has a space in which the photocurable resin supplied through the resin supply part 120 is accommodated.

A hole 111 into which the photocurable resin supplied from the resin supply unit 120 may be injected may be formed at the bottom of the resin container 110.

The resin supply unit 120 may supply the photocurable resin to the upper portion through the hole 111. The resin supply unit 120 may adjust the supply amount or supply speed of the photocurable resin. For example, the resin supply unit 120 may adjust the supply amount or supply speed of the photocurable resin by using a pneumatic or hydraulic method or a pressure difference between the resin supply unit 120 and the upper portion of the base plate 130. . The photocurable resin supplied from the resin supply unit 120 may be supplied to the hole 111 through a fluid supply path R11 which is a movement path of the fluid.

The resin supply unit 120 may be connected to a plurality of auxiliary material input units 141 to 14N. For example, in the case of combining colors, three auxiliary material input parts supplying red, cyan, and yellow colors may be connected to the resin supply part 120. The fluid supplied from the resin supply unit 120 and the plurality of auxiliary material input units 141 to 14N may be supplied into the resin container 110 through the fluid supply path R11. In this case, the fluids supplied from the resin supply unit 120 and the plurality of auxiliary material input units 141 to 14N in the fluid supply path R11 may be mixed.

The base plate 130 may be formed in the resin container 110, which is a basic plate on which a 3D object may be manufactured. The 3D object to be manufactured on the base plate 130 may be grown. A plurality of fluid tubes 131 may be formed in the base plate 130. The photocurable resin supplied through the fluid tube 131 may be ejected.

The support 135 may support the base plate 130 with respect to the bottom of the resin container 110.

In this case, a resin storage unit 115 may be formed between the bottom of the resin container 100 and the base plate 130 to store the photocurable resin.

The base plate 130 and the support 135 may be a ready-made ready-made product, but may be formed in the resin container 110 through curing of the photocurable resin supplied from the resin supply unit 120.

Hereinafter, a method of forming the base plate 130 and the support 135 through curing of the photocurable resin will be described.

The photocurable resin is supplied to the resin container 110 through the hole 111 through the resin supply unit 120. The resin supply unit 120 may supply the photocurable resin at a predetermined speed.

The light irradiator 150 may irradiate light to the photocurable resin supplied to the resin container 110 so that the region of the support 135 is first cured. When the support 135 is cured and the photocurable resin is filled to a predetermined height of the resin container 110, the top surface of the supplied photocurable resin may be cured by a predetermined thickness to form the base plate 130. In this case, curing may be performed except for a region to be used as the fluid pipe 131. When the base plate 130 is manufactured in this manner, a resin storage unit 115 may be formed between the base plate 130 and the bottom of the resin container 100.

In this case, the base plate 130 may be formed in such a manner as to minimize the distance between the base plate 131 and the bottom surface of the resin container 110 containing the photocurable resin to minimize the amount of the photocurable resin. .

FIG. 2 is a plan perspective view of the A-A cross section of FIG. 1.

As shown, the number, shape and thickness of the support 135 supporting the base plate 130 may vary. The support 135 may support the base plate 130, but may also serve as a chamber (for example, an outer wall of the resin reservoir 115) forming the resin reservoir 115. Reference numeral 210 is a connecting passage through which the photocurable resin may be moved.

FIG. 3 is a plan perspective view of the section B-B of FIG. 1. FIG.

As shown, a plurality of fluid tubes 131 may be formed in the base plate 130. The greater the number of fluid tubes 131 (ie, the denser the fluid tubes), the better the production speed and uniformity of the three-dimensional composition.

On the other hand, the base plate 130 is deformed by the weight of the three-dimensional object (stereoscopic sculpture) to be produced, the number, shape, and thickness of the base plate 130 hardening thickness and the support 135 supporting the base plate 130. It can be manufactured to have a degree of durability.

4 is a view for explaining an example of manufacturing using the dam 400 of the method for growing a three-dimensional object using the three-dimensional printer of FIG. The process of forming the dam 400 may be replaced by the process of forming other means such as grooves, valleys or points. The dam 400 may be formed at the outermost portion of the three-dimensional object or may be formed between the fluid pipe 131 and the adjacent fluid pipe 131 to be used as a boundary line, and may well flow the fluid discharged through the fluid pipe 131. It may be used to form a passageway.

FIG. 4 (a) illustrates a process of forming a dam 400 that is the outside of the 3D object, and FIG. 4 (b) illustrates a process of curing the inside of the dam 400, which is outside the 3D object.

While the upper pressure and the resin pressure of the base plate 130 are adjusted, the amount and speed of the photocurable resin ejected through the fluid tube 131 may be adjusted.

The resin pressure is a pressure pushed from the resin supply unit 120, which may eventually coincide with the supply amount. Here, the expression "pressure" is inevitably connected to the end of the resin supply unit 120 and the fluid pipe 131, the photocurable resin that is a liquid in the fluid pipe 131 may eventually be pushed out when the upper pressure is lower than the resin pressure. The resin supply unit 120 may supply the photocurable resin into the resin container 110 through pneumatic, hydraulic, or mechanical methods. In general, the upper pressure may be at or below atmospheric pressure.

On the other hand, if the upper portion of the base plate 130 separately is a space sealed by the resin container 110, the air density of the upper portion of the sealed base plate 130 may be the upper pressure. In this case, when the upper pressure is higher than the resin pressure of the resin supply unit 120, the resin may reversely flow into the resin supply unit 120. In this case, the resin flowing into the resin supply unit 120 may use one of the auxiliary material input units 141 to 14N as the resin recovery unit (not shown).

When the photocurable resin ejected through the upper portion of the fluid tube 131 is spread from the base plate 130 to the outline of the planar figure of the three-dimensional sculpture, the three-dimensionally by the light irradiation control of the light irradiation unit 150. The boundary line of the outermost part of the planar shape of the sculpture may be first hardened to form a structure such as the dam 400. The light irradiator 150 may irradiate light to harden the inside of the dam 400. In this case, the light irradiation unit 150 may control the light irradiation so that the internal region of the fluid pipe 131 to be formed inside the dam 400 is not cured. The three-dimensional sculpture may be manufactured using only one fluid tube 131. For example, in the shape of a cup, a cylindrical solid sculpture, etc., one fluid pipe 131 and the outermost part of the fluid pipe 131 may serve as the dam 400. In this case, the fluid tube 131 may be an internal space of the three-dimensional sculpture after the three-dimensional sculpture is completed. In addition, the fluid tube 131 may be formed on the outermost outer side of the three-dimensional sculpture (outer fluid tube) to surround the entire three-dimensional sculpture. In this case, the three-dimensional sculpture may be completed in a state submerged in the fluid filled in the outer fluid tube (not shown). In this case, the surface treatment of the three-dimensional sculpture can be finished simultaneously in the three-dimensional sculpture production process.

The resin supply unit 120 controls the supply amount of the resin while appropriately adjusting the difference between the upper pressure and the resin pressure, so that the amount of the photocurable resin ejected through the fluid tube 131 can be adjusted. The fluid pipe 131 may have a different diameter on the same two-dimensional plane. In this case, since the amount of the resin ejected through the large diameter fluid pipe and the amount of the resin ejected through the small diameter fluid pipe 131 may be different, the area in which the ejected resin spreads according to the diameter of the fluid pipe 131 is spread. You need to set the appropriately. In addition, the method of pulling up the resin by lowering the upper pressure than the resin pressure rather than pushing the resin through the resin supply unit 120 may eject the resin more uniformly.

In addition, the physical properties such as the color and strength of the three-dimensional sculpture produced by the change of the color or components of the auxiliary material supplied through the auxiliary material input unit (141 ~ 14N) can be adjusted.

For example, when brown ink or powder is added as an auxiliary material, the color of the sculpture may turn brown. In addition, when a soft material such as silicon powder is used as the auxiliary material, the manufactured product may be softly manufactured.

In other words, in the case of producing a tree trunk, brown ink or powder may be added to produce a tree trunk, and green ink or powder may be input to change the color of the part to be manufactured.

At this time, it is important to change the auxiliary material in advance by accurately calculating the amount of the photocurable resin mixed with the previous color remaining inside the fluid tube 131.

When changing from a hard material to a soft material, the auxiliary material can be changed into a material that can form a soft material, and the hardness can be adjusted by adjusting the supply amount of the auxiliary material so that the hardness is low after curing of the mixed material mixed with the photocurable resin. .

In addition, the auxiliary material input unit (141 ~ 14N) and the resin supply unit 120 may be located at an appropriate point so that the photocurable resin and the auxiliary material can be well blended.

By continuously repeating the dam forming process shown in FIG. 4 (a) and the internal curing process of the dam shown in FIG. 4 (b), the three-dimensional sculpture can be grown to the designed object.

When the production of the three-dimensional sculpture in the shape of the final object is completed, the resin pressure and the upper pressure are kept the same so that the resin is no longer discharged through the fluid tube.

In this case, the light irradiation unit 150 may cure the photocurable resin present on the upper portion of the fluid tube 131 by irradiating visible light to the upper region of the fluid tube 131 so that the upper end of the fluid tube 131 is blocked. .

In such a case, when the end of the fluid tube 131 is blocked, the photocurable resin that remains uncured inside the fluid tube 131 may not be removed.

Therefore, in some cases, the fluid including the photocurable resin may be recovered through the resin supply unit 120 without blocking the end of the fluid pipe 131 formed at the end thereof. By lowering the resin pressure lower than the upper pressure it is possible to remove the uncured resin in the fluid tube (131). In this case, the resin flowing into the resin supply unit 120 may use one of the auxiliary material input units 141 to 14N as a resin recovery unit (not shown).

After removing the fluid containing the photocurable resin (in addition to the photocurable resin, an auxiliary material may be added) inside the fluid tube 131, the adhesive that is cured by elapsed time or heat is supplied to the resin supply unit 120 to supply the fluid tube 131. ) You can fill the inside. After the adhesive is filled in the fluid tube 131, if the upper pressure and the resin pressure are kept the same while the heat is applied for a predetermined time, the adhesive in the fluid tube 131 may be completely cured.

According to an embodiment of the present invention, when using a curing agent having two properties simultaneously cured by light or heat cured as a photocuring agent, a process of removing the photocuring agent inside the fluid tube and filling the adhesive again to cure by heat May be omitted. That is, in the case of using the curing agent having the thermosetting characteristics and photocuring characteristics as described above, even if the curing agent in the fluid tube 131 does not take out the hardened hardened after a certain time, the process can be shortened.

On the other hand, after removing the remaining curing agent inside the fluid tube 131, when a hard current flowing through the current, such as a conductive adhesive, the fluid tube 131 may form a three-dimensional circuit line.

When manufacturing an artificial organ that mimics a living tissue with a three-dimensional sculpture, a part of the formed fluid tube 131 may be used as an artery, a part as a vein, and a part as a passage through which nerve cells are connected.

On the other hand, as shown in Figure 1 or 4, when manufacturing a three-dimensional sculpture by supplying a resin to a plurality of fluid tube 131 using one resin supply unit 120, changing the color or material In order to change the material of the auxiliary material input unit (141 ~ 14N), it may be difficult to produce a three-dimensional sculpture having a variety of materials and colors because the same material and color appear in common in the process of forming a sculpture of a certain height.

Hereinafter, a method of manufacturing a three-dimensional sculpture with various materials and colors in one same two-dimensional stacked surface formed when the three-dimensional object to be manufactured is viewed in a vertical direction and the cross section is cut.

FIG. 5 is a three-dimensional printer in which a plurality of resin reservoirs are formed between the base plate and the bottom of the resin container so as to correspond to the plurality of resin supplies, and FIG. 6 is branched into a plurality of fluid tubes instead of separately manufactured. The area is a three-dimensional printer serving as a resin reservoir.

The three-dimensional printer 500 illustrated in FIG. 5 includes a resin container 510, a first resin supply part 521, a second resin supply part 522, a base plate 530, and auxiliary material input parts 5411 to 541N and 5421. 542 N), the light irradiation unit 550 may be included.

The resin container 510, the first resin supply unit 521, the second resin supply unit 522, the base plate 530, the auxiliary material input unit 5411 to 541N, 5421 to 542N, and the light irradiation unit 550 are illustrated in FIG. The parts described in FIGS. 1 to 4 can be equally applied.

However, the three-dimensional printer 100 illustrated in FIG. 1 may supply the photocurable resin into the resin container 510 simultaneously from the plurality of

resin supply units

521 and 522. This is different from).

Therefore, hereinafter, the same description of the parts described in FIGS. 1 to 4 will be omitted, and only differences will be mainly described.

The 3D printer 500 may simultaneously use the first resin supply unit 521 and the second resin supply unit 522.

The first resin supply unit 521 and the second resin supply unit 522 may be connected to the auxiliary material input unit, respectively. The first resin supply unit 521 may be connected to the auxiliary material input units 5521 to 541N of the first group, and the second resin supply unit 522 may be connected to the auxiliary material input units 5251 to 542N of the second group. .

Fluids supplied from the first resin supply unit 521 and the first group of auxiliary material input units 5411 to 541N in the fluid supply path R51 are mixed, and the second resin supply unit 522 in the fluid supply path R52. And fluids supplied from the auxiliary material inlets 5221 to 542N of the second group may be mixed.

Each of the

resin supply units

521 and 522 may correspond to as

small resin reservoirs

511 and 522 as necessary to send resin back to the plurality of fluid tubes. The first resin supply unit 521 may supply the photocurable resin to the first resin storage unit 511, and the second resin supply unit 522 may supply the photocurable resin to the second resin storage unit 512. The first resin supply unit 521 and the second resin supply unit 522 may simultaneously supply photocurable resins of the same material or different materials. The

resin supply units

521 and 522 may be configured in two or more forms. Also, the auxiliary material input part groups 5521 to 541N and 5421 to 542N may also be configured in two or more pieces so as to correspond to the number of the

resin supply parts

521 and 522.

The process of manufacturing the three-dimensional sculpture is the same as the process of manufacturing the three-dimensional sculpture by using the three-dimensional printer 100 having a single resin supply.

That is, when the photocurable resin is ejected through the fluid tube 531 inside the three-dimensional object, and the ejected liquid (fluid including the photocurable resin) is spread to the upper horizontal plane cured by the surface tension, the fluid tube 531 part is opened. Three-dimensional sculptures can be produced by the bottom-up method of making three-dimensional sculptures while curing the remaining parts.

Each of the

resin supply units

521 and 522 may generally perform two roles sequentially in the manufacturing process of the three-dimensional object.

When the intermediate part is formed during the growth of the three-dimensional sculpture, the timing and supply amount and speed of the auxiliary material and the photocurable resin are controlled, and the mixing point and supply amount of the auxiliary material and the photocuring agent are formed when the final part is formed. And speed.

For example, if you want to make a tree in bloom, each

resin supply unit

521, 522 is a feeder for producing leaves, a feeder for producing flowers, a feeder for producing leaves in the middle of the tree The role can be shared by a device or the like.

However, the three types of feeders will have to form the tree post and tree branch in common before performing the final manufacturing role, and then form the object of the given role. Must be done in order.

The more resin supplies, the more precise and detailed colors and materials can be represented, but the higher the cost of manufacturing 3D printers. Meanwhile, the plurality of

resin supply parts

521 and 522 and the auxiliary

material input parts

141 and 14N are

resin supply parts

521 and 522 and auxiliary

material input parts

141 and 14N for supplying the same material to reduce manufacturing costs. The main resin supply part (not shown) and the main auxiliary material input part (not shown) are divided into several resin supply parts and auxiliary material input parts, and each branched resin supply part and the auxiliary material input part have separate control valves. It is also possible to lower the production cost by preparing the (not shown).

The three-dimensional printer 600 illustrated in FIG. 6 includes a resin container 610, a first resin supply part 621, a second resin supply part 622, a base plate 630, and auxiliary material input parts 6411 to 641N and 6421. 642N), the light irradiation unit 650 may be included.

The resin container 610, the first resin supply unit 621, the second resin supply unit 622, the base plate 630, the auxiliary material input unit 6411 to 641N, 6421 to 642N, and the light irradiation unit 650 are illustrated in FIG. The parts described in 5 may apply equally.

However, in the three-dimensional printer 600 of FIG. 6, since the region branched into the plurality of fluid tubes formed in the base plate 630 serves as the resin storage unit, the process of forming the resin storage unit may be omitted.

As described above, in the three-dimensional sculpture manufacturing method using a three-dimensional printer according to an embodiment of the present invention when the photocurable resin is ejected through the fluid tube inside the three-dimensional sculpture, and the ejected liquid is spread to the horizontal plane by the surface tension, It is a bottom-up method that produces three-dimensional sculptures while curing the remaining parts except the fluid pipe part.

As described above, the three-dimensional printer and the three-dimensional object manufacturing method according to an embodiment of the present invention uses a fluid tube phenomenon in the internal liquid of the hardened portion in the Delaminating process of the conventional photopolymerization type 3D printing method The problem of generating a vacuum in the space can be solved.

In addition, according to an embodiment of the present invention, when the photocurable resin is discharged through the fluid tube inside the three-dimensional object (stereoscopic sculpture), and the discharged liquid is spread to the horizontal plane by the surface tension, the remaining portion except for the fluid tube portion By using the bottom-up method of creating a 3D object while hardening, you can quickly create a 3D object.

The method of manufacturing a three-dimensional object by using the above-described three-dimensional printer may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable recording medium. In this case, the computer-readable recording medium may include program instructions, data files, data structures, and the like, alone or in combination. Meanwhile, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention, or may be known and available to those skilled in computer software.

Computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks such as floppy disks. Magnetic-Optical Media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like.

The recording medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like.

In addition, program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

The above-described three-dimensional printer and a method of manufacturing a three-dimensional object using the three-dimensional printer are not limited to the configuration and method of the above-described embodiments, and the embodiments may be modified in various ways. All or part of each of the embodiments may be configured to be selectively combined to make it possible.

Claims

A resin container accommodating a photocurable resin;

A resin supply unit supplying the photocurable resin through a fluid supply path connected to a hole formed in a bottom of the resin container;

A base plate having a fluid tube positioned at a predetermined height from the bottom of the resin container to eject the photocurable resin; and a resin storage part capable of storing the photocurable resin between the bottom of the resin container and the base plate. Formed; And

And a light irradiation part for irradiating light onto the base plate.
The method of claim 1, wherein the light irradiation unit

And the vertical upper region of the fluid tube formed on the base plate is capable of controlling the light irradiation such that the photocuring does not cure the resin.
The method of claim 1, wherein the three-dimensional printer

And a support for supporting the base plate with respect to the bottom of the resin container.
The method of claim 3, wherein the base plate and the support is

Three-dimensional printer, characterized in that formed through the curing of the photocurable resin supplied from the resin supply unit.
The method of claim 1, wherein the three-dimensional printer

And an auxiliary material input unit supplying an auxiliary material through a fluid supply path connected to the hole.
The method of claim 5,

Wherein the auxiliary material input portion is made of a plurality, wherein one of the plurality of auxiliary material input portion is a three-dimensional printer, characterized in that the resin recovery unit is the reversed recovery of the supplied resin.
The method of claim 1,

The resin supply unit may include a first resin supply unit supplying a photocurable resin to the first resin storage unit; And

A second resin supply unit supplying the photocurable resin to the second resin storage unit,

And a region of the first resin storage unit and the second resin storage unit.
The method of claim 7, wherein the three-dimensional printer

A first auxiliary material inlet connected to a first fluid supply path, which is a movement path of the photocurable resin supplied from the first resin supply part; And

And a second auxiliary material inlet connected to a second fluid supply path, which is a movement path of the photocurable resin supplied from the second resin supply part.
The method of claim 8, wherein the three-dimensional printer

A main resin supply part connected to the first resin supply part and the second resin supply part to supply the same photocurable resin to the first resin supply part and the second resin supply part; And

And a main auxiliary material input part connected to the first auxiliary material input part and the second auxiliary material input part to supply the same auxiliary material to the first resin supply part and the second resin supply part. 3D printer.
The method of claim 9,

The supply amount of the photocurable resin supplied from the main resin supply unit to the first resin supply unit and the second resin supply unit through control valves respectively corresponding to the first resin supply unit and the second resin supply unit may be adjusted.

Supply amount of auxiliary material supplied from the main auxiliary material input part to the first auxiliary material input part and the second auxiliary material input part through control valves corresponding to the first auxiliary material input part and the second auxiliary material input part, respectively. The three-dimensional printer, characterized in that each is adjusted.
The method of claim 1, wherein the resin storage unit

And a region branched into a plurality of fluid tubes formed on the base plate.
A method for manufacturing a three-dimensional object using a three-dimensional printer comprising a resin container and a base plate which is located at a predetermined height from the bottom of the resin container, the fluid plate is formed,

Supplying a photocurable resin from the bottom of the resin container through a resin supply unit;

Irradiating light onto the photocurable resin ejected through the fluid tube of the base plate using a light irradiator; And

And controlling light irradiation such that light is not irradiated to the fluid pipe region formed on the base plate.
The method of claim 12, wherein the three-dimensional object manufacturing method

And supplying an auxiliary material through a fluid supply path, which is a moving passage of the photocurable resin supplied through the resin supply unit.
The method of claim 12, wherein the photocuring resin supply step

And supplying the photocurable resin to a plurality of resin storage portions in which regions are separated from each other in the resin container through a plurality of resin supply portions.
The method of claim 12, wherein the three-dimensional object manufacturing method

And recovering the photocurable resin remaining in the fluid tube through the resin supply unit.
The method of claim 12, wherein the light irradiation control step

The inside of the fluid tube is an internal space of the three-dimensional object, and the outermost region of the fluid pipe includes a step of irradiating light only to the outer region of the fluid tube so that the dam structure surrounding the three-dimensional object is formed; Characterized by the three-dimensional object manufacturing method.