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KR20200087324A - 3D printer - Google Patents

3D printer Download PDF

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Publication number
KR20200087324A
KR20200087324A KR1020180172697A KR20180172697A KR20200087324A KR 20200087324 A KR20200087324 A KR 20200087324A KR 1020180172697 A KR1020180172697 A KR 1020180172697A KR 20180172697 A KR20180172697 A KR 20180172697A KR 20200087324 A KR20200087324 A KR 20200087324A
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South Korea
Prior art keywords
light
unit
printer
light irradiation
main
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KR1020180172697A
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Korean (ko)
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KR102171814B1 (en
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박종복
이동길
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한국광기술원
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Priority to KR1020180172697A priority Critical patent/KR102171814B1/en
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    • 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
    • B29C64/286—Optical filters, e.g. masks
    • 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
    • B29C64/277—Arrangements for irradiation using multiple radiation means, e.g. micromirrors or multiple light-emitting diodes [LED]
    • 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
    • B29C64/129—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 characterised by the energy source therefor, e.g. by global irradiation combined with a mask
    • B29C64/135—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 characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
    • 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
    • B29C64/255—Enclosures for the building material, e.g. powder containers
    • 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
    • B33Y10/00—Processes of additive manufacturing
    • 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
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The present invention relates to a fractional manufacturing support-type photocuring 3D printer, comprising: a main tank configured to store a photocurable resin; a raisable forming stage installed so as to be able to raise a build plate from the bottom of the main tank; a plurality of light irradiation units, which are disposed in a lower part of the main tank to irradiate light to a fractional region set to fractionate a lower region of the main tank; a liquid crystal display which transmits light corresponding to a form image to be built by selectively transmitting or blocking light irradiated from the light irradiation units; a first polarizing plate provided between the light irradiation units and the liquid crystal display; and a second polarizing plate provided between the liquid crystal display and the main tank and positioned so as to have a polarization direction perpendicular to that of the first polarizing plate. Accordingly, the fractional manufacturing support-type photocuring 3D printer can improve the uniformity of light beams and reduce the number of applied light sources, and thus is easy to maintain and repair.

Description

분할 성형 지원형 광경화 3D 프린터{3D printer} Split molding support type photocurable 3D printer{3D printer}

본 발명은 분할 성형 지원형 광경화 3D 프린터에 관한 것으로서, 상세하게는 수조 하부에서 광을 조사하여 광경화에 의해 성형할 수 있도록 된 분할 성형 지원형 광경화 3D 프린터에 관한 것이다.The present invention relates to a split molding assisted photocurable 3D printer, and more particularly, to a split molding assisted photocurable 3D printer capable of being formed by photocuring by irradiating light from the bottom of a water tank.

3D 프린터는 형성하고자 하는 입체 모양을 인쇄기법에 의해 성형할 수 있는 장치를 말한다.3D printer refers to a device capable of forming a three-dimensional shape to be formed by a printing technique.

최근에는 제품의 디자이너 및 설계자가 CAD 나 CAM을 이용하여 3차원 모델링 데이터를 생성하고, 생성한 데이터를 이용하여 3차원 입체 형상의 시제품을 제작하는 이른바 3차원 프린팅 방법이 등장하게 되었으며, 이러한 3D 프린터를 산업, 생활, 의학 등 매우 다양한 분야에서 활용하고 있다.Recently, a so-called 3D printing method has emerged in which designers and designers of products generate 3D modeling data using CAD or CAM, and produce prototypes of 3D shape using the generated data. Is used in a wide variety of fields such as industry, life, and medicine.

일반적인 3D 프린터의 기본적인 원리는 얇은 2D 레이어를 쌓아서 3D 물체를 만드는 것이다.The basic principle of a typical 3D printer is to create a 3D object by stacking thin 2D layers.

즉, 3D 프린터 방법에는 광경화성 수지에 레이저 광선을 주사하여 주사된 부분이 경화되는 원리를 이용한 SLA(Stereo Lithography Apparatus)와, SLA에서의 광경화성 수지 대신에 기능성 고분자 또는 금속분말을 사용하여 레이저 광선으로 주사하여 기능성 고분자 또는 금속분말을 고결시켜 성형하는 원리를 이용한 SLS(Selective Laser Sintering), FDM방식(Fused Deposition Modeling)과, 광경화수지가 저장된 저장조의 하부로 광을 조사하여 부분적으로 경화되는 원리를 이용하는 DLP(Digital Light Processing) 방식 및 LCD를 이용하여 인쇄하는 광경화 방식 등이 있다.That is, in the 3D printer method, a laser beam is injected using a functional polymer or metal powder in place of the photocurable resin in the SLA (Stereo Lithography Apparatus) and SLA using the principle that the injected part is cured by scanning a laser beam into the photocurable resin. SLS (Selective Laser Sintering), FDM method (Fused Deposition Modeling) and the principle of partially curing by irradiating light to the bottom of the storage tank in which the photocurable resin is stored using the principle of solidifying and molding a functional polymer or metal powder by scanning with There are a DLP (Digital Light Processing) method and a photocuring method for printing using an LCD.

기존의 SLA 방식은 광경화성 수지를 이용하는 방법으로 미국특허 4,575,330호에 게시되어 있다.The existing SLA method is published in US Patent 4,575,330 as a method using a photo-curable resin.

또한, DLP방식은 국내 등록특허 제10-1533374호에 게시되어 있다.In addition, the DLP method is published in Korean Patent No. 10-1533374.

한편, 광경화수지가 저장된 저장조의 하부로 광을 조사하여 경화시키는 방식의 경우 광빔의 균일도를 향상시킬 수 있는 구조가 꾸준히 요구되고 있다.Meanwhile, in the case of a method in which light is cured by irradiating light to a lower portion of a reservoir in which a photocurable resin is stored, a structure capable of improving the uniformity of the light beam is steadily required.

본 발명은 상기와 같은 요구사항을 해결하기 위하여 창안된 것으로서, 성형영역에 대한 광조사영역을 분담하면서도 광빔의 균일도를 향상시킬 수 있는 분할 성형 지원형 광경화 3D 프린터를 제공하는데 그 목적이 있다.The present invention was devised to solve the above-described requirements, and an object thereof is to provide a split molding-supported photocurable 3D printer capable of improving the uniformity of a light beam while sharing a light irradiation region with respect to a molding region.

상기의 목적을 달성하기 위하여 본 발명에 따른 분할 성형 지원형 광경화 3D 프린터는 광경화 수지를 저장할 수 있도록 된 메인 수용조와; 상기 메인 수용조의 바닥으로부터 상방으로 빌드판을 승강할 수 있게 설치된 승강 조형스테이지와; 상기 메인 수용조의 하부에 배치되어 상기 메인 수용조의 하부 영역에 대해 분할담당하도록 설정된 분할담당영역으로 광을 조사하는 복수개의 광조사부와; 상기 광조사부들로부터 조사된 광을 선택적으로 투과 또는 차단하여 조형할 성형이미지에 대응되는 광을 투과시키는 액정디스플레이와; 광조사부와 상기 액정디스플레이 사이에 마련된 제1편광판과; 상기 액정디스플레이와 상기 메인 수용조 사이에 마련되며 상기 제1편광판과 편광방향이 직교되게 배치된 제2편광판;을 구비한다.In order to achieve the above object, the split molding support type photocurable 3D printer according to the present invention includes a main accommodating tank configured to store a photocurable resin; An elevating molding stage installed to elevate the build plate upward from the bottom of the main accommodation tank; A plurality of light irradiating units disposed under the main accommodation tank and irradiating light to the divided management areas configured to be divided and divided for the lower area of the main accommodation tank; A liquid crystal display that selectively transmits or blocks light irradiated from the light irradiation units to transmit light corresponding to the molded image to be molded; A first polarizing plate provided between the light irradiation unit and the liquid crystal display; And a second polarizing plate provided between the liquid crystal display and the main accommodating tank and disposed in an orthogonal direction to the first polarizing plate.

본 발명의 일 측면에 따르면, 상기 메인 수용조는 바닥면이 사각형 형상으로 형성되어 있고, 상기 광조사부는 상기 메인 수용조의 바닥면을 복수 개로 분할한 단위 분할영역을 각각 분할담당영역으로 담당하면서 광을 조사하도록 단위 분할영역 각각에 대응되게 마련된다.According to an aspect of the present invention, the main receiving tank has a bottom surface formed in a square shape, and the light irradiating unit is responsible for dividing the unit division areas divided into a plurality of the bottom surfaces of the main receiving tank into the area in charge of division, respectively. It is provided to correspond to each of the unit divisions for investigation.

또 다르게는 상기 메인 수용조는 바닥면이 사각형 형상으로 형성되어 있고, 상기 광조사부는 상기 메인 수용조의 바닥면에 대해 길이방향을 따라 나란하게 복수 개로 분할한 단위 분할영역을 각각 이동하면서 광을 조사하여 담당하도록 상기 단위 분할영역 보다 작은 광조사면적을 갖게 형성된다.Alternatively, the main accommodating tank has a bottom surface in a rectangular shape, and the light irradiating unit irradiates light while moving each of the unit divided areas divided in plural along the longitudinal direction with respect to the bottom surface of the main accommodating tank. It is formed to have a light irradiation area smaller than that of the unit division area.

또한, 상기 제1 및 제2편광판은 투명기판에 금속소재로 상호 이격되게 형성된 다수의 금속띠로 형성된 것이 바람직하다.In addition, the first and second polarizing plates are preferably formed of a plurality of metal bands formed spaced apart from each other with a metal material on a transparent substrate.

바람직하게는 상기 광조사부는 광을 출사하는 광원과; 상기 광원이 안착되는 사각 바닥면의 각 변으로부터 상방으로 폭이 점진적으로 확장되게 연장되며 입사된 광을 반사시키는 4개의 측벽을 갖는 각형 반사 하우징과; 상기 각형 반사하우징을 거쳐 진행되는 광의 균일도를 향상시키기 위해 다수의 파리눈렌즈가 어레이된 빔균일화부재;를 구비한다.Preferably, the light irradiation unit and a light source for emitting light; A rectangular reflective housing having four sidewalls extending from each side of the square bottom surface on which the light source is seated and gradually extending in width upward to reflect incident light; And a beam equalizing member in which a plurality of fly-eye lenses are arranged in order to improve the uniformity of light passing through the rectangular reflective housing.

본 발명에 따른 분할 성형 지원형 광경화 3D 프린터에 의하면, 광빔의 균일도를 향상시킬 수 있고 적용 광원의 수도 줄일 수 있어 유지 보수가 용이한 장점을 제공한다.According to the split molding-supported photocurable 3D printer according to the present invention, it is possible to improve the uniformity of the light beam and reduce the number of applied light sources, thereby providing easy maintenance.

도 1은 본 발명의 일 실시예에 따른 분할 성형 지원형 광경화 3D 프린터를 나타내 보인 도면이고,
도 1의 광조사부의 일부를 발췌하여 도시한 사시도이고,
도 3은 도 1의 메인 수용조 하부 영역을 9개로 분할한 경우의 광조사부의 배치 예를 나타내 보인 평면도이고,
도 4는 본 발명의 또 다른 실시예에 따른 광조사부가 적용된 광경화 3D 프린터를 나타내 보인 도면이고,
도 5는 도 4의 메인 수용조 하부 영역을 3개로 분할한 경우의 광조사부의 배치예를 나타내 보인 평면도이다.1 is a view showing a split molding support type photocurable 3D printer according to an embodiment of the present invention,
It is a perspective view showing a part excerpt of the light irradiation part of Figure 1,
3 is a plan view showing an example of the arrangement of the light irradiation unit when the main receiving tank in FIG. 1 is divided into nine areas,
4 is a view showing a photocurable 3D printer to which a light irradiation unit according to another embodiment of the present invention is applied,
FIG. 5 is a plan view showing an arrangement example of a light irradiation unit when the main receiving tank lower region of FIG. 4 is divided into three.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예에 따른 분할 성형 지원형 광경화 3D 프린터를 더욱 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in more detail a split molding support type photocurable 3D printer according to a preferred embodiment of the present invention.

도 1은 본 발명의 일 실시예에 따른 분할 성형 지원형 광경화 3D 프린터를 나타내 보인 도면이고, 도 1의 광조사부의 일부를 발췌하여 도시한 사시도이다.1 is a view showing a split molding support type photocurable 3D printer according to an embodiment of the present invention, and is a perspective view showing a part of the light irradiation part of FIG. 1.

도 1 및 도 2를 참조하면, 본 발명에 따른 분할 성형 지원형 광경화 3D 프린터(100)는 복수 개의 광조사부(110), 메인 수용조(130), 승강 조형스테이지(160)를 구비한다.1 and 2, the split molding assisted photocurable 3D printer 100 according to the present invention includes a plurality of light irradiating units 110, a main receiving tank 130, and a lifting molding stage 160.

메인 수용조(130)는 사각형상의 투명 바닥면을 갖게 형성되어 있으며, 광경화성 수지가 저수된다.The main accommodating tank 130 is formed to have a rectangular transparent bottom surface, and a photocurable resin is stored.

도시된 예와 다르게, 메인 수용조(130)에는 후술되는 광조사부(110)의 분할담당영역에 대응되게 형성되어 메인 수용조(130)내에 수용되는 분할담당 수용조(미도시)가 수용되고, 분할 담당 수용조에 광경화수지를 저수한 구조로 이용할 수 있음은 물론이다.Unlike the illustrated example, the main accommodating tank 130 is accommodated in the main accommodating tank 130, which is formed to correspond to the dividing area of the light irradiating unit 110, which will be described later, and is accommodated in the main accommodating tank 130 (not shown). It goes without saying that the photocurable resin can be used in the storage tank for division.

광조사부(110)는 광경화 수지를 저장할 수 있도록 된 메인 수용조(130)의 하부에 복수 개가 배치되어 메인 수용조(130)의 하부 영역에 대해 광조사영역을 분할담당하도록 설정된 분할담당영역으로 각각 광을 조사한다.The light irradiating unit 110 is a plurality of arranged in the lower portion of the main receiving tank 130 to be able to store the photo-curable resin is divided into a region in charge to be divided into a light irradiation region for the lower region of the main receiving tank 130 Each is irradiated with light.

광조사부(110)는 광원(112), 각형 반사하우징(114) 및 빔균일화부재(116)를 구비한다.The light irradiator 110 includes a light source 112, a square reflective housing 114 and a beam homogenizing member 116.

광원(112)은 광을 출사하며 다수의 발광다이오드가 어레이되어 형성될 수 있다.The light source 112 emits light and may be formed by arraying a plurality of light emitting diodes.

각형 반사하우징(114)은 지지바디(111)에 장착되어 있고, 광원(112)이 안착되는 사각 바닥면(114a)의 각 변으로부터 상부가 개방된 내부공간을 갖게 상방으로 폭이 점진적으로 확장되게 연장되며 입사된 광을 반사시키는 4개의 측벽(114b)을 갖는 구조로 되어 있다.The square reflective housing 114 is mounted on the support body 111, and the width is gradually extended upwardly so that the upper side has an open inner space from each side of the square bottom surface 114a on which the light source 112 is seated. It has a structure having four side walls 114b extending and reflecting incident light.

여기서, 각형 반사하우징(114)의 측벽(114b)은 반사율이 높은 소재로 형성되거나, 반사율이 높은 반사층이 코팅처리되면 된다.Here, the side wall 114b of the rectangular reflective housing 114 may be formed of a material having a high reflectivity or a reflective layer having a high reflectivity may be coated.

또한, 각형 반사하우징(114)은 광원(112)으로부터 확산되어 출사되는 광빔이 반사횟수가 증가하여 사각형상의 빔균일화 성능을 높일 수 있게 바닥면(114a)폭에 대해 측벽(114b) 상단 사이의 폭이 2배 이상이 되게 길게 연장되게 형성된다.In addition, the square reflective housing 114 is the width between the top of the side wall 114b with respect to the width of the bottom surface 114a to increase the beam uniformity performance of the quadrangle by increasing the number of reflections of the light beam diffused from the light source 112 and increased. It is formed to be elongated so as to be 2 times or more.

빔균일화부재(116)는 각형 반사하우징(114) 상부에 배치되어 각형 반사하우징(114)을 거쳐 진행되는 광의 균일도를 향상시키기 위해 다수의 파리눈렌즈(116a)가 어레이된 구조로 되어 있다.The beam homogenizing member 116 is disposed on the square reflective housing 114 and has a structure in which a plurality of fly-eye lenses 116a are arrayed to improve the uniformity of light traveling through the square reflective housing 114.

이러한 광조사부(110)는 메인 수용조(130)의 사각형상의 바닥면을 복수 개로 분할한 단위 분할영역을 각각 분할담당영역으로 담당하면서 광을 조사하도록 단위 분할영역 각각에 대응되게 마련된다.The light irradiator 110 is provided to correspond to each of the unit division areas so as to irradiate light while taking charge of the unit division areas, each of which divides the rectangular bottom surface of the main receiving tank 130 into a plurality of division areas.

일 예로서, 도 3에 도시된 바와 같이 메인 수용조(130)의 사각형상의 바닥면을 가로 및 세로 방향으로 각각 3분할하여 전체적으로 9개로 분할한 경우 9개의 단위 분할영역(S)에 대해 독립적으로 광을 조사할 수 있게 광조사부(110)가 마련된다.As an example, as illustrated in FIG. 3, when the bottom surface of the rectangular shape of the main receiving tank 130 is divided into three in each of the horizontal and vertical directions, and is divided into nine as a whole, independently of the nine unit divisions S The light irradiation unit 110 is provided to irradiate light.

이 경우 9개의 단위 분할영역(S)이 분할담당영역이 되고, 각 단위분할영역에 광조사부(110)가 마련되어 광을 조사한다.In this case, nine unit division areas S are divided into division areas, and light irradiation units 110 are provided in each unit division area to irradiate light.

또한, 단위분할영역은 메인 수용조(130)의 바닥면을 가로상으로 2개 및 세로상으로 2개의 단위분할 영역을 갖게 분할하고, 4개의 광조사부(110)가 단위분할영역에 각각 마련될 수 있다.In addition, the unit dividing area is divided so that the bottom surface of the main receiving tank 130 has two unit dividing areas horizontally and vertically, and four light irradiating units 110 are respectively provided in the unit dividing areas. Can be.

액정디스플레이(LCD)(120)는 메인 수용조(130)의 전체 성형영역에 해당하는 메인 수용조(130)의 바닥면의 대응되는 크기를 갖는 것이 적용되며, 후술되는 제1 및 제2편광판(131)(132)과 함께 각 광조사부(110)들로부터 조사된 광을 전체 성형 이미지에 대응되게 선택적으로 투과 또는 차단한다.The liquid crystal display (LCD) 120 is applied to have a corresponding size of the bottom surface of the main receiving tank 130 corresponding to the entire forming region of the main receiving tank 130, the first and second polarizing plates ( The light irradiated from each light irradiation unit 110 together with the 131) 132 is selectively transmitted or blocked to correspond to the entire molded image.

제1편광판(131)은 광조사부(110)와 액정디스플레이(120) 사이에 마련되어 있다.The first polarizing plate 131 is provided between the light irradiation unit 110 and the liquid crystal display 120.

제2편광판(132)은 액정디스플레이(120)와 메인 수용조(130) 사이에 마련되며 제1편광판(131)과 편광방향이 직교되게 배치되어 있다.The second polarizing plate 132 is provided between the liquid crystal display 120 and the main accommodating tank 130 and the first polarizing plate 131 and the polarization direction are orthogonally arranged.

바람직하게는 열적 안정성을 높이도록 제1 및 제2편광판(131)(132)은 투명기판에 금속소재로 상호 이격되게 형성된 다수의 금속띠로 형성된다. 여기서 금속띠들은 가시광선에 대해 설정된 방향의 성분만 통과시키도록 수십 내지 수백 나노미터의 이격간격을 갖게 배치된다.Preferably, the first and second polarizing plates 131 and 132 are formed of a plurality of metal strips spaced apart from each other by a metal material on the transparent substrate to increase thermal stability. Here, the metal bands are arranged to have spacings of tens to hundreds of nanometers so that only components in a direction set for visible light pass through.

승강조형 스테이지(160)는 메인 수용조(130)의 바닥으로부터 상방으로 빌드판(151)을 승강할 수 있게 설치되어 있다.The lifting tank stage 160 is installed to be able to lift the build plate 151 upward from the bottom of the main receiving tank 130.

승강 조형 스테이지(160)는 메인 수용조(130)에 복수개의 분할수지 저장조(미도시)가 적용되는 경우 적용되는 분할수지 저장조에 대응되게 복수개로 설치되면 된다.When the plurality of divided resin storage tanks (not shown) are applied to the main receiving tank 130, the elevating molding stage 160 may be installed in a plurality corresponding to the applied divided resin storage tanks.

승강 조형 스테이지(160)는 프레임(161)에 설치된 모터(162)에 의해 회전되는 리드스크류(163)와 리드스크류(163)의 회전에 의해 승하강될 수 있게 결합된 승하강부재(165)의 하단에 결합된 마그네틱 탈착부(167) 및 마그네틱 탈착부(167)에 착탈되는 빌드판(151)을 구비한다.The elevating molding stage 160 is formed of a lifting screw 165 coupled to be raised and lowered by rotation of the lead screw 163 and the lead screw 163 rotated by the motor 162 installed in the frame 161. It has a magnetic detachable portion 167 coupled to the lower end and a build plate 151 detachably attached to the magnetic detachable portion 167.

마그네틱 탈착부(167)는 빌드판(151)을 자력 생성 또는 해제에 의해 탈착할 수 있도록 되어 있다.The magnetic detachable portion 167 is capable of detaching the build plate 151 by generating or releasing magnetic force.

빌드판(151)은 광경화수지의 광조사에 대응되는 성형품을 형성할 수 있도록 된 것으로, 판형으로 자력에 감응하는 소재 예를 들면 철 소재로 형성된다.The build plate 151 is capable of forming a molded article corresponding to light irradiation of the photocurable resin, and is formed of a plate-shaped material that is sensitive to magnetic force, for example, iron material.

한편, 광조사부(110)를 이동가능하게 구축하여 분할담당영역을 이동에 의해 담당할 수 있게 구축될 수 있고 그 예를 도 4를 참조하여 설명한다.On the other hand, the light irradiator 110 can be constructed to be movable to be constructed to be in charge of the divisional area by moving, and an example will be described with reference to FIG. 4.

도 4를 참조하면, 광조사부(110)는 메인 수용조(130)의 바닥면에 대해 길이방향을 따라 나란하게 복수 개로 분할한 단위 분할영역을 각각 이동하면서 광을 조사하여 담당하도록 단위 분할영역 보다 작은 광조사면적을 갖게 형성된다.Referring to FIG. 4, the light irradiating unit 110 moves the unit divided areas divided into a plurality in parallel along the longitudinal direction with respect to the bottom surface of the main receiving tank 130, and irradiates light while being irradiated, respectively. It is formed with a small light irradiation area.

즉, 광조사부(110)는 지지바디(111)에 장착된 피니언(172)과, 지지바디(111)가 직선상으로 안내되면서 이동될 수 있게 형성된 슬라이딩바디(171)에 피니언(172)과 치합되게 형성된 랙기어(174) 및 피니언(172)을 정역 회전구동하는 모터(미도시)에 의해 지지바디(110)를 직선이동시키는 이송부(170)가 마련되어 있다.That is, the light irradiation unit 110 meshes with the pinion 172 mounted on the support body 111 and the pinion 172 on the sliding body 171 formed so that the support body 111 can be moved while being guided in a straight line. A transfer unit 170 for linearly moving the support body 110 is provided by a motor (not shown) that rotates the rack gear 174 and the pinion 172 forward and backward.

이 경우 도 5에 도시된 바와 같이, 메인 수용조(130)의 바닥면에 대해 길이방향을 따라 나란하게 3개로 분할한 단위 분할영역(a)(b)(c)을 각각 광조사부(110)가 이동하면서 광을 조사하여 담당하도록 구축할 수 있다.In this case, as shown in FIG. 5, the unit dividing areas (a) (b) (c) divided into three along the longitudinal direction with respect to the bottom surface of the main receiving tank 130 are respectively irradiated 110. It can be constructed to irradiate light as it moves.

따라서, 광조사부(110)는 분할담당영역이 되는 단위 분할영역 보다 작은 광조사면적을 갖게 구축해도 되는 장점이 있다.Therefore, the light irradiation unit 110 has an advantage in that it may be constructed to have a smaller light irradiation area than the unit division area serving as a division area.

상호 나란하게 구획되는 단위 분할영역은 도시된 예와 다르게 2개, 또는 4개 이상으로 적용될 수 있음은 물론이다.Needless to say, two or four or more unit partitions divided in parallel with each other may be applied.

제어부(미도시)는 설정된 성형 조건에 대응되게 광조사부(110) 및 LCD(120)의 구동을 제어한다.The control unit (not shown) controls the driving of the light irradiation unit 110 and the LCD 120 to correspond to the set molding conditions.

즉, 제어부는 형성하고자 하는 성형물의 각 층에 해당하는 성형패턴에 대응되는 광조사부(110)를 가동하고 성형패턴에 대응되는 광이 메인수용조(130)의 하부에 조사되게 액정디스플레이(120)를 제어한다. That is, the control unit operates the light irradiation unit 110 corresponding to the molding pattern corresponding to each layer of the molding to be formed, and the liquid crystal display 120 so that light corresponding to the molding pattern is irradiated to the lower portion of the main receiving tank 130 To control.

이상에서 설명된 분할 성형 지원형 광경화 3D 프린터에 의하면, 광빔의 균일도를 향상시킬 수 있고 적용 광원의 수도 줄일 수 있어 유지 보수가 용이한 장점을 제공한다.According to the split molding-supported photocurable 3D printer described above, it is possible to improve the uniformity of the light beam and reduce the number of applied light sources, thereby providing easy maintenance.

110: 광조사부 112: 광원
114: 각형 반사하우징 116: 빔균일화부재
130: 메인 수용조 160: 승강 조형스테이지
170: 이송부110: light irradiation unit 112: light source
114: square reflective housing 116: beam uniformity member
130: main receiving tank 160: lifting molding stage
170: transfer unit

Claims (5)

광경화 수지를 저장할 수 있도록 된 메인 수용조와;
상기 메인 수용조의 바닥으로부터 상방으로 빌드판을 승강할 수 있게 설치된 승강 조형스테이지와;
상기 메인 수용조의 하부에 배치되어 상기 메인 수용조의 하부 영역에 대해 분할담당하도록 설정된 분할담당영역으로 광을 조사하는 복수개의 광조사부와;
상기 광조사부들로부터 조사된 광을 선택적으로 투과 또는 차단하여 조형할 성형이미지에 대응되는 광을 투과시키는 액정디스플레이와;
광조사부와 상기 액정디스플레이 사이에 마련된 제1편광판과;
상기 액정디스플레이와 상기 메인 수용조 사이에 마련되며 상기 제1편광판과 편광방향이 직교되게 배치된 제2편광판;을 구비하는 것을 특징으로 하는 분할 성형 지원형 광경화 3D 프린터.A main accommodating tank configured to store a photocurable resin;
An elevating molding stage installed to elevate the build plate upward from the bottom of the main accommodation tank;
A plurality of light irradiating units disposed under the main accommodation tank and irradiating light to the divided management areas configured to be divided and divided for the lower area of the main accommodation tank;
A liquid crystal display that selectively transmits or blocks light irradiated from the light irradiation units to transmit light corresponding to the molded image to be molded;
A first polarizing plate provided between the light irradiation unit and the liquid crystal display;
And a second polarizing plate provided between the liquid crystal display and the main accommodation tank and disposed in a direction perpendicular to the polarizing direction of the first polarizing plate. 제1항에 있어서, 상기 메인 수용조는 바닥면이 사각형 형상으로 형성되어 있고, 상기 광조사부는 상기 메인 수용조의 바닥면을 복수 개로 분할한 단위 분할영역을 각각 분할담당영역으로 담당하면서 광을 조사하도록 단위 분할영역 각각에 대응되게 마련된 것을 특징으로 하는 분할 성형 지원형 광경화 3D 프린터.According to claim 1, The main receiving tank has a bottom surface is formed in a rectangular shape, the light irradiating unit to irradiate the light while each of the unit divisions divided into a plurality of the bottom surface of the main receiving tank as the division responsible area. Split molding support type photocurable 3D printer, which is provided to correspond to each unit division. 제1항에 있어서, 상기 메인 수용조는 바닥면이 사각형 형상으로 형성되어 있고, 상기 광조사부는 상기 메인 수용조의 바닥면에 대해 길이방향을 따라 나란하게 복수 개로 분할한 단위 분할영역을 각각 이동하면서 광을 조사하여 담당하도록 상기 단위 분할영역 보다 작은 광조사면적을 갖게 형성된 것을 특징으로 하는 분할 성형 지원형 광경화 3D 프린터.According to claim 1, The main receiving tank has a bottom surface is formed in a rectangular shape, the light irradiation unit is moved while moving the unit divisions divided into a plurality of parallel to the bottom surface of the main receiving tank along the longitudinal direction, respectively. Split molding support type photocurable 3D printer, characterized in that it has a light irradiation area smaller than that of the unit division area so as to irradiate it. 제1항에 있어서, 상기 제1 및 제2편광판은 투명기판에 금속소재로 상호 이격되게 형성된 다수의 금속띠로 형성된 것을 특징으로 하는 분할 성형 지원형 광경화 3D 프린터.According to claim 1, wherein the first and second polarizing plates are formed by a plurality of metal bands formed spaced apart from each other with a metal material on the transparent substrate, a support for split molding photocurable 3D printer. 제1항에 있어서, 상기 광조사부는
광을 출사하는 광원과;
상기 광원이 안착되는 사각 바닥면의 각 변으로부터 상방으로 폭이 점진적으로 확장되게 연장되며 입사된 광을 반사시키는 4개의 측벽을 갖는 각형 반사 하우징과;
상기 각형 반사하우징을 거쳐 진행되는 광의 균일도를 향상시키기 위해 다수의 파리눈렌즈가 어레이된 빔균일화부재;를 구비하는 것을 특징으로 하는 분할 성형 지원형 광경화 3D 프린터.The method of claim 1, wherein the light irradiation unit
A light source that emits light;
A rectangular reflective housing having four sidewalls extending from each side of the square bottom surface on which the light source is seated to gradually extend in width and reflecting incident light;
Split-forming support type photocuring 3D printer, characterized in that it comprises; a beam equalization member with a plurality of fly-eye lenses arranged to improve the uniformity of the light going through the square reflective housing.
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