KR20170030109A

KR20170030109A - Three dimensional printer and method of forming a three dimensional objedt

Info

Publication number: KR20170030109A
Application number: KR1020150126835A
Authority: KR
Inventors: 임은석; 임하정
Original assignee: 임은석; 임하정
Priority date: 2015-09-08
Filing date: 2015-09-08
Publication date: 2017-03-17
Also published as: WO2017043747A1; KR101725658B1

Abstract

The present invention relates to a three-dimensional printer and a three-dimensional object manufacturing method capable of producing a three-dimensional object by using Continuous Liquid Spreading Production (CLSP).
A three-dimensional printer according to an embodiment of the present invention includes a resin container in which a photocurable resin is accommodated; A resin supply unit for supplying the photocurable resin through a fluid supply path connected to holes formed in the bottom of the resin container; A base plate provided with a fluid tube at a predetermined height from the bottom of the resin container and capable of ejecting the photocurable resin; a resin reservoir capable of storing the photocurable resin between a bottom of the resin container and the base plate; Formed; And a light irradiating unit for irradiating light onto the base plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a three-dimensional printer and a method for producing a three-dimensional object,

The present invention relates to a three-dimensional printer and a method for producing a three-dimensional object, and more particularly, to a three-dimensional printer capable of producing a three-dimensional object by using Continuous Liquid Spreading Production (CLSP) And a method for producing a three-dimensional object.

Generally, in order to produce a prototype having a three-dimensional shape, there is a mock-up production method manually performed by a design drawing, and a CNC milling production method using a computer control.

Such a mock-up manufacturing method is manual, so it is difficult to precisely control the numerical value. It is not precisely matched with the design drawings, and it takes a considerable amount of time. The CNC milling production method allows precise numerical control, There are many disadvantages in that it is difficult to process these parts.

Due to these disadvantages, a three-dimensional printer method has recently emerged in which product designers and designers can directly produce three-dimensional prototypes using three-dimensional modeling created by a computer. As a related prior art, there is a registered patent No. 10-1504419.

The printing method of the three-dimensional printer can be roughly divided into a material extrusion method, a light polymerization method, a material jetting method, an adhesive jetting method, a powder lamination melting method, and a high energy direct irradiation method. The six types of three-dimensional printing methods each have advantages and disadvantages.

In recent years, photopolymerization type three-dimensional printers have become popular.

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

However, in the conventional process as described above, it takes a long time, and when the curing plate is pulled up in the delaminating process, a vacuum is generated in the internal liquid space of the cured portion, and thus it is inevitably pulled to the bottom glass surface. In addition, due to the method of hardening the data of the vertically cut surface of the three-dimensional object at one time, the speed is faster than the material extrusion method, but the liquid to be hardened on the same surface can not be the same, It is impossible to express.

In recent years, research on three-dimensional printers, which solve the problems in the delaminating process, which can perform three-dimensional printing more quickly and partially different texture and color representation can be achieved in the case of three-dimensional printing of the photopolymerization method It is necessary.

An object of the present invention is to provide a continuous liquid spreading production (CLSP) method capable of rapidly performing three-dimensional printing and generating a vacuum in an internal liquid space of a hardened portion in a delaminating process And a method for producing a three-dimensional object using the three-dimensional printer.

According to an aspect of the present invention, there is provided a resin container including a photocurable resin accommodated therein; A resin supply unit for supplying the photocurable resin through a fluid supply path connected to holes formed in the bottom of the resin container; A base plate provided with a fluid tube at a predetermined height from the bottom of the resin container and capable of ejecting the photocurable resin; a resin reservoir capable of storing the photocurable resin between a bottom of the resin container and the base plate; Formed; And a light irradiation unit for irradiating light onto the base plate.

According to an aspect of the present invention, there is provided a method of manufacturing a three-dimensional object using a three-dimensional printer including a resin container and a base plate positioned at a predetermined height from a bottom of the resin container, The method comprising the steps of: supplying a photocurable resin under the resin container through a resin supply portion; Irradiating the photocurable resin ejected through the fluid tube of the base plate with light using a light irradiation unit; And controlling light irradiation so that no light is irradiated to the fluid tube region formed on the base plate.

The 3D printer and 3D object manufacturing method according to an embodiment of the present invention can be applied to a 3D printing method using a Continuous Liquid Spreading Production (CLSP) It is possible to solve the problem that a vacuum is generated in the internal liquid space of the cured portion in the process of manufacturing the same, and a part of the object to be manufactured can be freely manufactured in a different texture or in different colors.

According to an embodiment of the present invention, when a photocurable resin is discharged through a fluid tube inside a three-dimensional object (stereoscopic molding) and the discharged photocurable resin spreads on a horizontal plane due to surface tension, By using the bottom-up method that creates three-dimensional objects while hardening the remaining parts, it is possible to rapidly produce three-dimensional objects.

1 is a view showing a three-dimensional printer according to an embodiment of the present invention.
2 is a plan perspective view of section AA of Fig.
3 is a plan perspective view of section BB of Fig.
FIG. 4 is a diagram for explaining a method of growing a three-dimensional object using the three-dimensional printer of FIG. 1;
Figs. 5 to 6 are diagrams showing a three-dimensional printer having a plurality of resin supply units. Fig.

Hereinafter, a three-dimensional printer and a three-dimensional object producing 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 referents unless the context clearly dictates otherwise. In this specification, the terms "comprising ", or" comprising "and the like should not be construed as necessarily including the various elements or steps described in the specification, Or may be further comprised of additional components or steps.

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

A photopolymer is a polymer in which changes in physical properties occur when light (ultraviolet light or visible light) is irradiated. A photopolymer exhibiting such a change in physical properties as to be stiffened from a structural point of view is used as a material in 3D printing because cross-linking occurs in the polymer when light is irradiated. When light is irradiated in the presence of a monomer, an oligomer or a photocatalyst, photopolymerization causes a cross-link reaction, resulting in a hardened polymer. This process is called "curing ".

There are various mechanisms that cause photo curing, and are divided into SLA (Stereolithography) and DLP (Digital Light Processing).

SLA-style printers are also called vat- (photo) polymerization. In a water tank called Vat, a photopolymer is filled, and solidification is performed by irradiating a desired portion of the horizontal plane with a laser beam in a scanning manner. The polymer exposed to the beam is photocured and hardened, leaving the remaining liquid. It is a method of stacking in the vertical direction by repeating the same work on the horizontal surface above the piston in the middle. Other methods of causing photo curing may also be used.

The DLP type 3D printer is not a scanning method but a method of transmitting the information on the horizontal plane at one time using a beam projector (DLP) to perform photo curing. The DLP method has the advantage that the scanning speed is fast. By sending information on one side at a time, it can be processed quickly because it does not require time for scanning, and if the reaction rate of photopolymer is sufficient, it can show great printing speed.

The three-dimensional printer according to an embodiment of the present invention described below performs curing by the DLP scheme. Also, in this specification, a three-dimensional object and a stereoscopic object can be used in the same meaning as an object produced through a three-dimensional printer.

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

3, the three-dimensional printer 100 may include a resin container 110, a resin supply unit 120, a base plate 130, an auxiliary material input unit 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 unit 120 is accommodated.

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

The resin supply part 120 can supply the photocurable resin to the upper part through the holes 111. [ The resin supply unit 120 can adjust the supply amount or the supply speed of the photocurable resin. For example, the resin supply unit 120 may adjust the supply amount or the supply speed of the photo-curing resin by using a difference between the pressures of the pneumatic, hydraulic, or resin supply unit 120 and the upper part of the base plate 130 . The photocurable resin supplied from the resin supply unit 120 may be supplied to the holes 111 through the fluid supply path R11, which is a path of movement 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 portions supplying red (Magenta), blue (Cyan), and yellow (Yellow) colors may be connected to the resin supply portion 120. The fluid supplied from the resin supply part 120 and the plurality of auxiliary material input parts 141 to 14N can be supplied into the resin container 110 through the fluid supply path R11. In this case, the fluids supplied from the resin supply portion 120 and the plurality of auxiliary material input portions 141 to 14N in the fluid supply path R11 can be mixed.

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

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

In this case, a resin reservoir 115 in which the photocurable resin can be stored may be formed between the bottom of the resin container 100 and the base plate 130.

The base plate 130 and the support 135 may be formed in the resin container 110 through the 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 the curing of the photo-curing resin will be described.

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

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

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

2 is a planar perspective view of the A-A cross section of Fig.

As shown, the number, shape, and thickness of the supports 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 forming the resin reservoir 115 (for example, serving as an outer wall of the resin reservoir 115). Reference numeral 210 denotes a connection passage through which the photocurable resin can be moved.

Fig. 3 is a plan perspective view of the B-B cross section of Fig. 1; Fig.

As shown in the figure, a plurality of fluid tubes 131 may be formed on the base plate 130. The higher the number of the fluid tubes 131 (that is, the closer the fluid tubes are), the better the production speed of the three-dimensional composition and uniformity of the product.

The thickness of the cured base plate 130 and the number, shape, and thickness of the supports 135 supporting the base plate 130 are determined by the weight of the three-dimensional object (stereoscopic molding) And can be made to have durability that is not high.

FIG. 4 is a diagram for explaining an example of manufacturing a three-dimensional object by using the dam 400 using the three-dimensional printer of FIG. The process of forming the dam 400 may be replaced by a process of forming grooves, valleys, or other means such as dots. The dam 400 may be formed at the outermost portion of the three-dimensional object or may be formed as a boundary line between the fluid pipe 131 and the adjacent fluid pipe 131 and may flow well through the fluid pipe 131 Lt; / RTI >

FIG. 4A shows a process of forming a dam 400 that is outside the three-dimensional object, and FIG. 4B shows a process of curing the interior of the dam 400, which is the outside of the three-dimensional object.

The amount and speed of the photocurable resin ejected through the fluid pipe 131 can be adjusted while the upper pressure and the resin pressure of the base plate 130 are adjusted.

The resin pressure is the pressure that is pushed by the resin supply part 120, which may eventually coincide with the supply amount. Here, the term 'pressure' means that the end of the resin supply unit 120 is connected to the fluid tube 131, and the photo-cured resin, which is liquid in the fluid tube 131, can be pushed out until the upper pressure is lower than the resin pressure. The resin supply unit 120 can supply the photocurable resin into the resin container 110 through a pneumatic, hydraulic, or mechanical method. In general, the top pressure may be at or below atmospheric pressure.

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

When the photocurable resin ejected through the upper portion of the fluid tube 131 spreads out from the base plate 130 to the outline of the planar shape of the stereolithography object, The structure of the dam 400 can be formed by first curing the boundary line of the outermost portion of the planar shape of the molding. The light irradiating unit 150 can irradiate light to harden the inside of the dam 400. In this case, the light irradiating unit 150 can control light irradiation so that the internal area of the fluid pipe 131 to be formed inside the dam 400 is not cured. The stereolithography may be made using only one fluid tube 131. For example, in the shape of a cup or a cylindrical three-dimensional object, the outermost part of the fluid pipe 131 and the fluid pipe 131 may serve as the dam 400. In this case, the fluid pipe 131 may be an internal space of the stereolithography product after the stereolithography product is completed. In addition, the fluid pipe 131 may be formed outside the outermost periphery of the three-dimensional molding (outer fluid pipe) to enclose the three-dimensional molding. In this case, the stereolithography can be completed in a state of being immersed in the fluid filled in the outer fluid tube (not shown). In this case, the surface treatment of the stereoscopic molding can be finished at the same time during the stereolithography manufacturing process.

The amount of the photocurable resin ejected through the fluid pipe 131 can be controlled by controlling the supply amount of the resin by the resin supply unit 120 while appropriately adjusting the difference between the upper pressure and the resin pressure. The fluid tube 131 may have different diameters on the same two-dimensional plane. In this case, since the amount of the resin ejected through the fluid pipe having a large diameter and the amount of the resin ejected through the fluid pipe 131 having a small diameter may be different from each other, It is necessary to appropriately set the value. In addition, a method of raising the resin by lowering the upper pressure than the resin pressure rather than pushing the resin through the resin supply part 120 can more uniformly eject the resin.

In addition, properties such as color and strength of the stereoscopic molding produced through the change of the color or the composition of the auxiliary material supplied through the auxiliary material input portions 141 to 14N can be controlled.

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

In other words, when making a tree shape, brown ink or powder may be put into a tree trunk and green ink or powder may be added to a portion where a leaf is made.

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

When changing from a hard material to a soft material, it is possible to adjust the hardness while adjusting the amount of auxiliary material so that the hardness of the mixed material mixed with the photocurable resin is lowered after the auxiliary material is converted into a material capable of forming a soft material .

In addition, the auxiliary material input portions 141 to 14N and the resin supply portion 120 may be located at appropriate points so that the photocurable resin and the auxiliary material can be well mixed.

By repeatedly repeating the dam forming process shown in Fig. 4 (a) and the dam internal setting process shown in Fig. 4 (b), the stereolithography can be grown to the designed object.

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

In this case, the light irradiating unit 150 may irradiate visible light to the upper region of the fluid tube 131 so as to block the upper end of the fluid tube 131, thereby curing the photocurable resin present on the fluid tube 131 .

In this case, if the end of the fluid tube 131 is blocked, the uncured resin existing in the fluid tube 131 can not be removed.

Accordingly, the fluid including the photocurable resin can be recovered through the resin supply part 120 without blocking the end of the fluid tube 131 formed at the end. The resin pressure can be made lower than the upper pressure so that the uncured resin in the fluid pipe 131 can be removed. In this case, the resin flowing into the resin supplying unit 120 can use one of the auxiliary material supplying units 141 to 14N as a resin collecting unit (not shown).

After removing a fluid (including a photocurable resin) that contains a photocurable resin inside the fluid tube 131, an adhesive which hardens over time or by heat is supplied to the resin supply unit 120 to be injected into the fluid tube 131 ). When the adhesive is filled in the fluid tube 131 and then the upper pressure and the resin pressure are maintained to be the same in a state in which heat is applied for a predetermined period of time, the adhesive in the fluid tube 131 can be completely cured.

One embodiment of the present invention is a process for removing a photo-curing agent in the fluid tube and then curing it by heat again by using an adhesive which has two properties simultaneously cured by light or cured by heat as a photo-curing agent Can be omitted. That is, when the curing agent having the thermosetting property and the photo-curing property as described above is used, the curing agent can be shortened because the curing agent is hardened after a certain period of time without removing the curing agent in the fluid tube 131.

On the other hand, when the hardening agent remaining in the fluid tube 131 is taken out and then a hardening agent having a good current flow such as a conductive adhesive is introduced, the fluid tube 131 may form a solid circuit line.

When an artificial organ is imitated with a stereoscopic molding, a part of the formed fluid tube 131 can be used as an artery, a part as a vein, and a part as a passage through which nerve cells are connected.

Meanwhile, as shown in FIG. 1 or 4, when a three-dimensional molding is manufactured by supplying resin to a plurality of fluid pipes 131 using one resin supply unit 120, When the materials of the auxiliary materials inputting portions 141 to 14N are changed, the same materials and colors are common in the process of forming the shaped objects over a certain height, so that it may be difficult to produce the stereoscopic objects having various materials and colors.

Hereinafter, a description will be given of a method of fabricating a three-dimensional object with various materials and colors in one identical two-dimensional laminate surface formed when a three-dimensional object to be manufactured is viewed in a vertical direction and the section is cut.

Figs. 5 to 6 are diagrams showing a three-dimensional printer having a plurality of resin supply units. Fig.

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 in correspondence with the plurality of resin supply parts, and FIG. 6 is a cross- Area is a three-dimensional printer that functions as a resin reservoir.

5 includes a resin container 510, a first resin supply part 521, a second resin supply part 522, a base plate 530, auxiliary material input parts 5411 to 541N and 5421 To 542N, and a light irradiating unit 550, as shown in FIG.

The resin container 510, the first resin supply portion 521, the second resin supply portion 522, the base plate 530, the auxiliary material input portions 5411 to 541N and 5421 to 542N, 1 to 4 can be equally applied.

However, the three-dimensional printer 500 shown in Fig. 5 can supply the photocurable resin into the resin container 510 at the same time from the plurality of resin supply parts 521 and 522. The three-dimensional printer 100 shown in Fig. ) Is the difference between the two.

Therefore, the same description will be omitted from the description of FIG. 1 through FIG. 4, and only differences will be mainly described.

The three-dimensional printer 500 can use the first resin supply portion 521 and the second resin supply portion 522 at the same time.

The first resin supply portion 521 and the second resin supply portion 522 may be connected to the auxiliary material input portion correspondingly. The first resin supply portion 521 may be connected to the first group of auxiliary material input portions 5411 to 541N and the second resin supply portion 522 may be connected to the second group of auxiliary material input portions 5421 to 542N .

The fluids supplied from the first resin supply section 521 and the first group of auxiliary material input sections 5411 to 541N are mixed in the fluid supply path R51 and the second resin supply section 522 is supplied from the fluid supply path R52, And the fluids supplied from the second group of auxiliary material inlet portions 5421 to 542N may be mixed.

Each of the resin supply portions 521 and 522 may correspond to the resin storage portions 511 and 522 as small as necessary to send the resin to the plurality of fluid tubes again. The first resin supplying portion 521 supplies the photocurable resin to the first resin storing portion 511 and the second resin supplying portion 522 supplies the photocurable resin to the second resin storing portion 512. The first resin supply part 521 and the second resin supply part 522 can simultaneously supply the same material or a photo-curing resin of a different material. The resin supply units 521 and 522 may be configured in two or more types. Also, the auxiliary material inputting portion groups 5411 to 541N and 5421 to 542N may be formed of a plurality of two or more so as to correspond to the number of the resin supplying portions 521 and 522.

The process of fabricating the three-dimensional molding is the same as the process of fabricating the three-dimensional molding using the three-dimensional printer 100 having a single resin supply unit.

That is, when the photo-cured resin is ejected through the fluid pipe 531 inside the three-dimensional molding, and the ejected liquid (fluid containing the photo-curing resin) spreads on the upper horizontal surface cured by the surface tension, And a stereoscopic molding can be produced by a bottom-up method in which a stereoscopic molding is produced while the remaining portions are cured.

Each of the resin supply units 521 and 522 can generally perform two roles in the process of fabricating the three-dimensional molding.

When the intermediate part is formed in the growth process of the three-dimensional molding, the mixing time, supply amount and speed of the auxiliary material and the photocurable resin are controlled, and when the last part of the growth process of the molding is formed, And speed can be controlled.

For example, if it is desired to produce a bloomed tree, each of the resin feeds 521 and 522 may include a feeder for making leaves, a feeder for making flowers, a feeder for making leaves in the middle of the tree Device and so on.

However, since the above three kinds of supply devices must form the wooden pillars and the tree branches in common before performing the final production role, and then form the object of the given role, In order.

The more the resin supply portion is, the more precise, the more detailed color and the material can be expressed, but the more the production cost of the three-dimensional printer becomes, the higher. A plurality of resin supply portions 521 and 522 and a plurality of auxiliary material supply portions 141 and 14N are provided with resin supply portions 521 and 522 for supplying the same material and auxiliary material injection portions 141 and 14N, (Not shown) and a main auxiliary material injection unit (not shown) are branched into a plurality of resin supply units and an auxiliary material input unit, and a separate control valve (Not shown) by lowering production costs.

The three-dimensional printer 600 shown in FIG. 6 includes a resin container 610, a first resin supply portion 621, a second resin supply portion 622, a base plate 630, auxiliary material input portions 6411 to 641N and 6421 To 642N, and a light irradiating unit 650.

The resin container 610, the first resin supply portion 621, the second resin supply portion 622, the base plate 630, the auxiliary material input portions 6411 to 641N and 6421 to 642N, 5 can be equally applied.

In the three-dimensional printer 600 shown in FIG. 6, since the region branched to the plurality of fluid tubes formed in the base plate 630 serves as the resin reservoir, the process of forming the resin reservoir can be omitted.

As described above, in the method of fabricating a three-dimensional molding using a three-dimensional printer according to an embodiment of the present invention, when a photocurable resin is ejected through a fluid pipe in a three-dimensional molding, and the ejected liquid spreads on a horizontal plane due to surface tension, This method is a bottom-up method in which three-dimensional sculptures are made while curing the remaining parts except the fluid tube part.

As described above, the three-dimensional printer and the three-dimensional object manufacturing method according to an embodiment of the present invention use a fluid tube to perform a delaminating process in a conventional 3D photopolymerization method, A problem that a vacuum is generated in the space can be solved.

In addition, according to an embodiment of the present invention, when the photo-curing resin is discharged through a fluid tube inside a three-dimensional object (stereoscopic molding) and the discharged liquid spreads on a horizontal plane by surface tension, By using the bottom-up method of creating a three-dimensional object while hardening the three-dimensional object, a three-dimensional object can be rapidly produced.

The method for producing a three-dimensional object using the above-described three-dimensional printer can be implemented in the form of a program command which can be executed through various computer means and recorded in a computer-readable recording medium. At this time, the computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination. On the other hand, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

The computer-readable recording medium includes a magnetic recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, a magnetic disk such as a floppy disk, A magneto-optical media, and a hardware device 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 a light or metal line, a wave guide, or the like, including a carrier wave for transmitting a signal designating a program command, a data structure, and the like.

The program instructions also include machine language code, such as those generated by the compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices 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 method of producing a three-dimensional object using the three-dimensional printer and the three-dimensional printer as described above can be applied to a limited number of configurations and methods of the embodiments described above, All or some of the embodiments may be selectively combined.

100, 500, 600: Three-dimensional printer
110, 510, 610: Resin container
120, 521, 522, 621, 622:
130, 530, 630: Base plate
135: Support
141 to 14N, 5411 to 541N, 5421 to 542N, and 6411 to 641N:
150, 550, 650: light irradiation unit

Claims

A resin container in which the photocurable resin is accommodated;
A resin supply unit for supplying the photocurable resin through a fluid supply path connected to holes formed in the bottom of the resin container;
A base plate provided with a fluid tube at a predetermined height from the bottom of the resin container and capable of ejecting the photocurable resin; a resin reservoir capable of storing the photocurable resin between a bottom of the resin container and the base plate; Formed; And
And a light irradiating unit for irradiating light onto the upper surface of the base plate.

The light source unit according to claim 1,
Wherein the vertical upper region of the fluid tube formed on the base plate is capable of controlling the light irradiation so that the photocuring resin is not cured.

The printer according to claim 1, wherein the three-dimensional printer
Further comprising a support for supporting the base plate with respect to the bottom of the resin container.

4. The apparatus of claim 3, wherein the base plate
And the curable resin is formed by curing the photocurable resin supplied from the resin supply unit.

The printer according to claim 1, wherein the three-dimensional printer
Further comprising an auxiliary material feeding portion for feeding the auxiliary material through the fluid feed path connected to the hole.

6. The method of claim 5,
Wherein one of the plurality of auxiliary material input portions is a resin recovery portion in which the supplied resin is reversely recovered.

The method according to claim 1,
The resin supply portion includes a first resin supply portion for supplying the photocurable resin to the first resin storage portion; And
And a second resin supply unit for supplying the photocurable resin to the second resin storage unit,
Wherein the first resin storage portion and the second resin storage portion are divided into areas.

8. The printer according to claim 7, wherein the three-dimensional printer
A first auxiliary material inlet connected to a first fluid supply passage which is a movement path of the photocurable resin supplied from the first resin supply portion; And
Further comprising a second auxiliary material inlet connected to a second fluid supply path which is a path of movement of the photocurable resin supplied from the second resin supply portion.

The printer according to claim 8, wherein the three-dimensional printer
A main resin supply unit connected to the first resin supply unit and the second resin supply unit to supply the same photo-curable resin to the first resin supply unit and the second resin supply unit; And
Further comprising at least one of a first auxiliary material feeding portion and a main auxiliary material feeding portion connected to the second auxiliary material feeding portion to supply the same auxiliary material to the first resin feeding portion and the second resin feeding portion Three-dimensional printer.

10. The method of claim 9,
The supply amounts of the photocurable resin supplied from the main resin supply portion to the first resin supply portion and the second resin supply portion through the control valves respectively corresponding to the first resin supply portion and the second resin supply portion are adjusted
The supply amount of the auxiliary material supplied from the main auxiliary material input portion to the first auxiliary material input portion and the second auxiliary material input portion through the control valve corresponding to the first auxiliary material input portion and the second auxiliary material input portion, Are controlled respectively.

[2] The apparatus according to claim 1,
And a region branched to a plurality of fluid tubes formed on the base plate.

There is provided a method of manufacturing a three-dimensional object using a three-dimensional printer including a resin container and a base plate positioned at a predetermined height from a bottom of the resin container and having a fluid pipe,
Supplying a photocurable resin under the resin container through a resin supply portion;
Irradiating the photocurable resin ejected through the fluid tube of the base plate with light using a light irradiation unit; And
And controlling light irradiation so that no light is irradiated to the fluid tube region formed on the base plate.

13. The method of claim 12,
Further comprising the step of supplying an auxiliary material through a fluid supply path which is a path of movement of the photocurable resin supplied through the resin supply portion.

13. The method of claim 12, wherein the step of supplying the photopolymerizable resin
And supplying the photocurable resin to a plurality of resin reservoirs whose areas are separated from each other in the resin container through a plurality of resin supply units.

13. The method of claim 12,
And recovering the remaining photocurable resin in the fluid tube through the resin supply unit.

13. The method according to claim 12, wherein the light irradiation control step
Wherein the inside of the fluid tube is an inner space of the three-dimensional object, and the light is irradiated only to an outer region of the fluid tube so that a dam structure surrounding the three-dimensional object is formed in an outermost region of the fluid tube A method for creating a three-dimensional object.