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WO2020138622A1 - Appareil et procédé d'impression 3d - Google Patents

Appareil et procédé d'impression 3d Download PDF

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Publication number
WO2020138622A1
WO2020138622A1 PCT/KR2019/009448 KR2019009448W WO2020138622A1 WO 2020138622 A1 WO2020138622 A1 WO 2020138622A1 KR 2019009448 W KR2019009448 W KR 2019009448W WO 2020138622 A1 WO2020138622 A1 WO 2020138622A1
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WO
WIPO (PCT)
Prior art keywords
composition
light source
light
curing
shape
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/009448
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English (en)
Korean (ko)
Inventor
김명재
성유철
유응태
심서현
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dic Korea Corp
Original Assignee
Dic Korea Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dic Korea Corp filed Critical Dic Korea Corp
Publication of WO2020138622A1 publication Critical patent/WO2020138622A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/264—Arrangements for irradiation
    • B29C64/268—Arrangements for irradiation using laser beams; using electron beams [EB]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Definitions

  • the present invention relates to a three-dimensional printing device and method.
  • 3D printer is indispensable.
  • 3D printing technology is expected to develop into a high value-added industry in the future, many companies in each country are making continuous efforts to develop their own hardware (H/W) and software (S/W).
  • FDM Fused Deposition Modeling
  • the FDM method is a method in which a 3D printer melts and extrudes a filament of a plastic material by heat, and then solidifies at room temperature to stack objects.
  • this FDM method has a high mechanical failure rate, and thus has a high failure rate in the actual shape production process.
  • a recently emerged 3D printing technology is a technology that uses light curing to print.
  • Typical examples of the photocurable 3D printing technology include a stereolithography apparatus (SLA) method or a digital light processing (DLP) method.
  • SLA method is a method in which a 3D printer irradiates a high-density laser to cure a resin to a desired shape
  • DLP is a method in which a 3D printer uses a light projector instead of a high-density laser to cure the resin.
  • DLP 3D printers cure the resin by irradiating light with an area other than a specific focus like the SLA method.
  • the 3D printer of the SLA method has the advantage of high precision of the final shape produced by irradiating a high-density laser with a specific focus, and has a disadvantage that a long time elapses until the final shape is manufactured.
  • the DLP type 3D printer has the advantage of significantly shortening the manufacturing time of the shape because the resin is cured by irradiating light with an area, while the precision of the final shape, in particular, the precision of implementation on the surface of the shape is poor.
  • the conventional 3D printing method using photocuring has a problem that each has disadvantages, and there is a demand for a new 3D printing method that minimizes the disadvantages.
  • resins conventionally used for 3D printing are opaque plastic materials, for example, ABS resin or urethane, etc., and thus have opaque characteristics. Accordingly, conventional resins have a problem of deteriorating aesthetics and optical properties such as transmission and diffusion. Therefore, there is a need for a transparent material that has excellent aesthetics and optical properties, and has improved durability, even for resins used for 3D printing.
  • One embodiment of the present invention has an object to provide a 3D printing apparatus and method for improving curing time and precision by separately curing a composition corresponding to a core portion and a shell portion of a shape to be manufactured.
  • the composition in the 3D printing apparatus for producing a shape by curing the composition, is irradiated with light to form a core portion having a predetermined area or volume from the center of the shape.
  • a composition for curing the composition to be a shell portion having a remaining area or volume excluding the predetermined area or volume among areas or volumes of the shape by irradiating light with the composition and a first light source for curing the composition It provides a 3D printing apparatus comprising a light source and a control unit for controlling the operation of the first light source and the second light source.
  • the first light source is characterized in that the composition is temporarily cured by irradiating light with an area corresponding to the core portion to the composition.
  • the second light source is characterized by irradiating light or laser focused at one focus.
  • the core portion is characterized in that larger than the area or volume of the shell portion.
  • a 3D printing device cures a composition to produce a shape, a core having a predetermined area or volume from the center of the shape by irradiating light with the composition
  • the first curing process to cure the composition in part and irradiating light with the composition, the composition as the shell portion having the remaining area or volume excluding the predetermined area or volume of the area or volume of the shape
  • the first curing process and the second curing process are characterized by being performed by different light sources.
  • the light source performing the first curing process is characterized in that the composition is temporarily cured by irradiating the composition with light having an area corresponding to the core portion.
  • the light source performing the second curing process is characterized by irradiating the focused light or laser with one focus.
  • the composition corresponding to the core portion and the shell portion of the shape to be manufactured is separately cured, thereby improving the curing time and precision.
  • FIG. 1 is a view showing the configuration of a 3D printing apparatus according to an embodiment of the present invention.
  • FIG. 2 is a view showing an embodiment of a 3D printing apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a method of curing a 3D printing composition by a 3D printing apparatus according to an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of curing a 3D printing composition by a 3D printing apparatus according to another embodiment of the present invention.
  • first, second, A, B, etc. can be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.
  • first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.
  • the term and/or includes a combination of a plurality of related described items or any one of a plurality of related described items.
  • each configuration, process, process or method included in each embodiment of the present invention may be shared within a technically inconsistent range.
  • FIG. 1 is a view showing the configuration of a 3D printing apparatus according to an embodiment of the present invention.
  • the 3D printing apparatus 100 includes a first light source 110, a second light source 115, a control unit 120, and a motor 130.
  • the first light source 110 irradiates light of a certain area with a 3D printing composition (hereinafter abbreviated as'composition').
  • the first light source 110 emits light having an area corresponding to a shape of a core portion of a shape finally produced by a 3D printing device (hereinafter abbreviated as'final shape'), rather than light focused at one point.
  • the first light source 110 irradiates light of a certain area with the composition, and cures the composition by a certain area at once.
  • the area of the light to be irradiated by the first light source 110 varies depending on the area of the core portion in each layer of the final shape.
  • the first light source 110 irradiates the composition with light corresponding to the area of the core portion in each layer of the final shape so that the composition can be cured like the core portion of the final shape.
  • the first light source 110 allows the 3D printing apparatus 100 to operate in a DLP 3D printing method.
  • the second light source 115 irradiates a laser of one focus to a container containing the composition.
  • the second light source 115 irradiates a focused laser with one focus, and moves the focus to cure the composition to become a shell portion of the final shape.
  • the second light source 115 further cures the shell portion of the final shape after the first light source 110 cures the composition or simultaneously with the first light source 110. Since the SLA 3D printing device cures the composition by irradiating a laser focused at one focus, such as a second light source, it takes a considerable amount of time to cure the composition to a final shape.
  • the 3D printing apparatus 100 since the second light source 115 only needs to cure the shell portion of the composition in which the core portion is already cured with the first light source, the 3D printing apparatus 100 has a long curing time as in the conventional SLA 3D printing apparatus. High precision can be achieved on the surface of the final shape without having it.
  • the second light source 115 allows the 3D printing device 100 to operate in the SLA 3D printing method.
  • the core portion of the final shape that is cured by the first light source 110 and the shell portion of the final shape that is cured by the second light source 115 may have different areas or volumes according to the setting of the controller 120.
  • the shell portion may mean a point from the outermost surface to a point that becomes 10% of the total volume of the final shape according to the setting of the control unit 120.
  • the first light source 110 and the second light source 115 may be irradiated with light or laser in the 405 nm band as an example of a wavelength band for curing the composition, but are not limited thereto.
  • the control unit 120 operates the first light source 110 and the second light source 115 alternately or simultaneously, thereby curing the composition to a final shape.
  • the controller 120 may set the area or volume of the core portion of the final shape that the first light source 110 cures and the area or volume of the shell portion of the final shape that the second light source 115 cures.
  • the control unit 120 alternately operates the first light source 110 and the second light source 115.
  • the first light source 110 first cures the core portions of the final shape in each layer, and then, the second light source 115 hardens the shell portions of the final shape in each layer.
  • the controller 120 controls the motor 130 to control the first light source 110, the second light source 115, or The container containing the composition is moved.
  • the control unit 120 controls the motor 130 so that the first light source 110 or the second light source 115 moves, so that when a light source irradiates light, another light source located on the optical axis Move it.
  • the control unit 120 controls the motor 130 to move the container containing the composition, and moves the container containing the composition onto the optical axis of each light source arranged to have different optical axes. Accordingly, the first light source 110 and the second light source 115 are irrespective of each other, and each light can be irradiated entirely with the composition.
  • the control unit 120 operates the first light source 110 and the second light source 115 simultaneously. Unlike the above-described case, the first light source 110 and the second light source 115 may be disposed or moved within a range that does not affect each other's optical axis. In this case, in order to improve the curing speed of the composition, the control unit 120 simultaneously operates the first light source 110 and the second light source 115 to simultaneously cure the composition corresponding to the shape of the core and shell of the final shape. To lose.
  • the control unit 120 may control the motor 130 such that each light source 110 or 115 is close to the container containing the composition, or the container containing the composition is close to each light source 110 and 115.
  • each light source (110, 115) and the container containing the composition should be close to or away from each other.
  • the control unit 120 may control the motor 130 so that each light source 110 or 115 approaches or moves away from the container. Conversely, the control unit 120 may control the motor 130 so that the container approaches or moves away from each light source 110 or 115.
  • the control unit 120 controls the first light source 110 and the second light source 115 to separate the composition for each layer to cure the composition.
  • the control unit 120 divides the final shape into layers of a level capable of curing each light source in one operation. Thereafter, the control unit 120 controls each light source 110 and 115 so that the composition can be cured in the same way as each layer in the final shape.
  • the control unit 120 controls the first light source 110 so that the composition is cured like the shape of the core in a specific layer in the final shape.
  • the control unit 120 controls the second light source 115 so that the composition is cured like the shape of the shell in a specific layer of the final shape.
  • the controller 120 determines whether the layer having completed curing is the final layer. If the cured layer is the final layer, since the curing is completed by each of the light sources 110 and 115, the control unit 120 ends the curing. Conversely, when the cured layer is not the final layer, the controller 120 controls each light source 110 or 115 so that each light source 110 or 115 cures the composition according to the next layer.
  • the motor 130 moves each light source 110 or 115 or a container containing the composition under the control of the control unit 120.
  • the motor 130 moves each light source 110 or 115 or a container containing the composition so that each light source 110 or 115 can alternately cure the composition, and each light source 110 or 115 is in close proximity to the composition.
  • Each light source (110, 115) or the container containing the composition is moved to cure.
  • FIG. 2 is a view showing an embodiment of a 3D printing apparatus according to an embodiment of the present invention.
  • the first light source 110 irradiates light with the composition 220 in the container 210 to cure the composition as much as the area 230 of the core in a specific layer of the final shape at once.
  • the control unit may control the second light source 115 to be away from the optical axis of the first light source 110, and the light irradiated from the first light source 110 interferes with the second light source 115 It can be completely irradiated with the composition 220 without.
  • the control unit may control the motor (not shown) to move the container 210 such that the first light source 110 and the container 210 are close together.
  • the second light source 120 irradiates light with the composition 220 to cure the composition of the shell 240 in a specific layer having a final shape.
  • the control unit controls the motor (not shown) so that the second light source 120 can cure the composition, so that the laser irradiated by the second light source 120 can enter the composition to the second position.
  • the light source 120 is moved again.
  • the control unit may control the motor (not shown) to move the container 210 such that the second light source 115 and the container 210 are close together.
  • the 3D printing apparatus 100 can secure an excellent level in both curing speed and quality by curing the composition alternately between the first light source 110 and the second light source 115.
  • first light source 110 and the second light source 115 are alternately operated is illustrated in FIG. 2, the present invention is not limited thereto, and the optical axis irradiated by the first light source 110 by the second light source 115 is not limited thereto.
  • the first light source 110 and the second light source 115 may be operated at the same time by being disposed or moved within a range not affecting.
  • the second light source 115 and the container 210 are illustrated as being moved, the present invention is not limited thereto.
  • FIG. 3 is a flowchart illustrating a method of curing a 3D printing composition by a 3D printing apparatus according to an embodiment of the present invention.
  • the control unit 120 controls the first light source 110 to irradiate light to cure the core portion (S310).
  • the control unit 120 controls the first light source 110 to irradiate light of a predetermined area with the composition.
  • the first light source 110 irradiates light of a certain area with the composition, thereby curing the composition at once as much as the area of the core in a specific layer of the final shape.
  • the control unit 120 controls the motor 130 so that the second light source 115 enters on the optical axis of the first light source 110 (S320).
  • the control unit 120 controls the second light source 115 to irradiate light to cure the shell portion (330).
  • the control unit 120 controls the second light source 115 so that the second light source 115 irradiates the laser with one focus to the composition.
  • the second light source 115 irradiates the focused laser with one focus, and moves the focus under the control of the controller 120 to cure the composition into the shape of the shell portion of the final shape.
  • the control unit 120 determines whether the cured layer is the final layer (S340). The control unit 120 determines whether the layer cured by the first light source 110 and the second light source 115 is the final layer of the final shape. If the cured layer is the final layer, since the curing is completed by each of the light sources 110 and 115, the control unit 120 ends the curing.
  • the controller 120 controls the motor so that the light source or container moves so that the next layer of the cured layer can be cured (S350). If the cured layer is not the final layer, curing should proceed to the next layer. Accordingly, the controller 1200 controls the motor so that the light source or container moves, so that curing processes of S310 to S330 can be performed on the next layer.
  • FIG. 4 is a flowchart illustrating a method of curing a 3D printing composition by a 3D printing apparatus according to another embodiment of the present invention.
  • the control unit 120 controls the first light source 110 and the second light source 115 to irradiate light to cure the core portion and the shell portion (S410).
  • the control unit 120 controls the first light source 110 and the second light source 115 to operate at the same time, thereby curing the composition corresponding to the core portion and the shell portion at a time.
  • the control unit 120 determines whether the cured layer is the final layer (S420).
  • the controller 120 controls the motor so that the light source or container moves so that the next layer of the cured layer can be cured (S430). If the cured layer is not the final layer, curing should proceed to the next layer. Therefore, the control unit 1200 controls the motor so that the light source or container moves so that the curing process of S410 can be performed on the next layer.
  • composition 220 according to an embodiment of the present invention which is cured by the 3D printing apparatus 100 and manufactured to a final shape, has transparent properties, and is cured to both the light source of the DLP 3D printing method and the light source of the SLA 3D printing method. It has a characteristic.
  • the composition 220 includes monofunctional monomers, bifunctional monomers, oligomers, initiators, photosensitizers, and other additives.
  • the monofunctional monomer an epoxy-based or ether-based monomer is used, and is contained in an amount of 10 to 20 parts by weight.
  • Monofunctional monomers are blended into composition 220 to adjust the viscosity of the composition.
  • a monofunctional monomer is additionally included separately from the bifunctional monomer, so that the viscosity of the composition is not too high.
  • the monofunctional monomer contains only 10 to 20 parts by weight.
  • an acrylic monomer is used, and contains 20 to 50 parts by weight.
  • the bifunctional monomer is the most contained in the composition to form a main chain, and corresponds to a main component that affects the overall reactivity and transparency of the composition.
  • the composition 220 includes each of the monofunctional monomer and the bifunctional monomer by a predetermined amount. As each monomer is included in the composition 220, the composition can be controlled by separating both viscosity and reactivity, respectively.
  • the acrylic monomer used as a bifunctional monomer is composed of a newly synthesized bisphenol paper (BPZ) series rather than a conventional bisphenol A (BPA) series.
  • BPZ bisphenol paper
  • BPA bisphenol A
  • the bisphenol paper-based monomer to be used as a bifunctional monomer is prepared by the following process.
  • Ethylene oxide (EO: Ethylen Oxide) is added to a conventional bisphenol paper (material before reaction) to synthesize a second bisphenol paper (BPZ(EO), material after reaction).
  • EO Ethylene oxide
  • BPZ(EO) second bisphenol paper
  • a third bisphenol paper (BPZ(EO) Ac) is synthesized by adding an acrylate functional group capable of polymerization to both terminal groups (-OH) of the synthesized second bisphenol paper.
  • the composition 220 has an advantage of high transparency, strength, and wear resistance.
  • epoxy acrylate and urethane-based acrylate are used, and contain 30 to 50 parts by weight.
  • Oligomers are components that affect the mechanical properties of the composition, such as strength. However, if too large an oligomer is included, yellowing may occur, and thus 30 to 50 parts by weight is included.
  • the oligomer epoxy acrylate and urethane acrylate are used. Since the urethane-based acrylate is mainly affected by the light source of the DLP 3D printing method, only the urethane-based acrylate cannot be used as an oligomer in order to cure the composition even in the light source of the SLA 3D printing method. Therefore, the oligomer includes not only a urethane-based acrylate, but also an epoxy acrylate that reacts to both a DLP 3D printing light source and a SLA 3D printing light source.
  • Initiator is used an initiator containing both a radical-based initiator component and a cationic initiator component, and is contained within 5 parts by weight.
  • An initiator is a substance that initiates a reaction in a specific wavelength band.
  • the polymerization reaction is a chain reaction, and the initiator reacts to light in a specific wavelength band to initiate the reaction.
  • an initiator containing both a radical-based initiator component and a cation-based initiator component is used as the initiator. By including both components, the initiator can initiate a reaction to both the light source of the DLP 3D printing method and the light source of the SLA 3D printing method.
  • the pigment is contained within 1 part by weight.
  • the pigment has a possibility of reducing the light transmittance and the reaction speed to a certain level in the visible region, but has the effect of improving color. Accordingly, the pigment may be included in a small amount in the composition.
  • the photosensitizer may be used as a silane coupling agent, and is contained within 1 part by weight.
  • the light sensitizer absorbs light of a specific wavelength, thereby minimizing the phenomenon of light spreading during 3D printing output. Accordingly, the photosensitizer allows the precision of the final shape to increase. Further, by suppressing the reaction rate, the photosensitizer can prevent the reaction from proceeding excessively. Since the photosensitizer suppresses the reaction rate, it is preferable that it is contained only within 1 part by weight, as described above.
  • additives may be additionally included according to required performance.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • the mixing ratio of the comparative examples are as follows.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions were prepared according to the blending ratios of the tables disclosed below.
  • compositions cured by being blended in the blending ratios of Examples 1 to 6 had a tensile strength of 46 to 53 MPa, while the compositions blended and cured by the blending ratios of Comparative Examples had a significantly low strength from 7 to 41 MPa. It is understood that the reason why the composition cured by being blended in the blending ratio of Examples 1 to 6 has excellent tensile strength is that the oligomer is included as an appropriate middle portion and the bifunctional monomer is also included in an appropriate weight part.
  • compositions cured by being blended in the blending ratios of Examples 1 to 6 have excellent elongation at a level of 3 to 8, whereas the compositions cured by being blended at a blending ratio in Comparative Examples generally have a low elongation at 1 to 2 level.
  • the composition cured by being blended in the blending ratio of Comparative Example 5 was confirmed to have a high elongation of 34.65, but this is a result of a remarkably low tensile strength and is therefore excluded from the determination of elongation.
  • compositions cured by being blended in the blending ratios of Examples 1 to 5 had a flexural strength of 117 to 134 MPa, while those blended and cured by the blending ratios of Comparative Examples did not have flexural strength.
  • the composition according to the present embodiment has transparent properties, and at the same time, has excellent properties even without a separate post-treatment process.
  • FIG. 3 describes that each process is executed sequentially, this is merely illustrative of the technical idea of an embodiment of the present invention.
  • a person having ordinary knowledge in the technical field to which one embodiment of the present invention belongs may execute or change one or more of each process by changing the order described in FIG. 3 without departing from the essential characteristics of one embodiment of the present invention. Since it will be applicable to various modifications and variations by executing in parallel, FIG. 3 is not limited to a time series sequence.
  • the processes illustrated in FIG. 3 may be implemented as computer-readable codes on a computer-readable recording medium.
  • the computer-readable recording medium includes all kinds of recording devices in which data readable by a computer system is stored. That is, the computer-readable recording medium includes a magnetic storage medium (eg, ROM, floppy disk, hard disk, etc.) and an optical read medium (eg, CD-ROM, DVD, etc.).
  • the computer-readable recording medium can be distributed over network coupled computer systems so that the computer-readable code is stored and executed in a distributed fashion.

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Abstract

Cette invention concerne un appareil et un procédé d'impression 3D. Selon un aspect d'un mode de réalisation de l'invention, un appareil d'impression 3D pour produire une forme par durcissement d'une composition comprend : une première source de lumière pour émettre de la lumière sur la composition de façon à faire durcir la composition et former une partie noyau ayant une superficie ou un volume prédéfini à partir du centre de la forme ; une seconde source de lumière pour émettre de la lumière vers la composition pour faire durcir la composition et former une partie coque ayant une superficie ou un volume restant autre que la superficie ou le volume prédéfini dans la superficie ou le volume de la forme ; et une unité de commande pour commander les opérations de la première source de lumière et de la seconde source de lumière.
PCT/KR2019/009448 2018-12-28 2019-07-29 Appareil et procédé d'impression 3d Ceased WO2020138622A1 (fr)

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KR10-2018-0172252 2018-12-28
KR1020180172252A KR102210280B1 (ko) 2018-12-28 2018-12-28 3차원 프린팅 장치 및 방법

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