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WO2017119692A1 - Imprimante 3d et dispositif de sortie optique associé - Google Patents

Imprimante 3d et dispositif de sortie optique associé Download PDF

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Publication number
WO2017119692A1
WO2017119692A1 PCT/KR2017/000036 KR2017000036W WO2017119692A1 WO 2017119692 A1 WO2017119692 A1 WO 2017119692A1 KR 2017000036 W KR2017000036 W KR 2017000036W WO 2017119692 A1 WO2017119692 A1 WO 2017119692A1
Authority
WO
WIPO (PCT)
Prior art keywords
output
reservoir
light
light source
tilting
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/KR2017/000036
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English (en)
Korean (ko)
Inventor
오해성
김준오
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.)
DENTIS Co Ltd
Original Assignee
DENTIS Co Ltd
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 DENTIS Co Ltd filed Critical DENTIS Co Ltd
Priority to CN201780005853.6A priority Critical patent/CN108472874A/zh
Publication of WO2017119692A1 publication Critical patent/WO2017119692A1/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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • 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

Definitions

  • the present invention relates to a three-dimensional printer, and more particularly to a three-dimensional printer and an optical output device thereof that can correct the focus of the light irradiated to the output plate side of the three-dimensional printer.
  • 3D printers are classified into four types according to printing methods: FDM (Fused Deposition Modeling), DLP (Digital Light Processing), SLA (StereoLithography Apparatus), and SLS (Selective Laser Sintering).
  • FDM Freused Deposition Modeling
  • DLP Digital Light Processing
  • SLA StepoLithography Apparatus
  • SLS Selective Laser Sintering
  • materials such as ceramics, plastics, metals and resins are used as the materials used.
  • the FDM method is a method of forming an object into a two-dimensional planar shape and laminating it in three dimensions to form a wire filament made of thermoplastic resin, and melting the laminated filament through a nozzle to form an object. It is a technical method of molding in three dimensions, and in this regard, Korean Patent Publication No. 10-2015-0134186 has been proposed.
  • the SLS method uses functional polymers or metal powders, and is a technology method that scans and solidifies by scanning a laser beam, and the SLA method uses technology that injects light onto a photocurable resin and hardens the scanned portion.
  • the photocurable resin is cured in response to light, like the SLA method, and is a technical method of forming a beam by irradiating a beam projection onto the photocurable resin.
  • An object of the present invention is to solve the above-mentioned problems, a three-dimensional printer that can correct the errors that can be generated while the light emitted from the light source side is irradiated to the output plate side through the galvanometer or reflector and It is to provide an optical output device thereof.
  • a three-dimensional printer optical output device for achieving the above object is a light source for emitting output light for forming a three-dimensional stereoscopic output;
  • a storage tank for storing an output material for forming the three-dimensional stereoscopic output by the output light emitted from the light source side;
  • a galvanometer positioned between the light source and the reservoir and configured to adjust a light path of the output light emitted from the light source side;
  • a focusing correction means positioned on an optical path of the output light between the galvanometer and the reservoir and correcting a focus of the output light passing through the galvanometer.
  • the reflector may further include a reflector configured to change a traveling direction of the output light emitted from the light source side, wherein the reflector is located at the front side or the rear side of the focusing correction means on the optical path of the output light. You may.
  • the light source may be another feature that is a laser (laser) or ultraviolet light.
  • the focusing correction means may be another feature of an F-theta lens or a telecentric F-theta lens.
  • the F-theta lens or the telecentric F-theta lens may be further characterized by being capable of adjusting the height or angle of the lens center.
  • a three-dimensional printer for achieving the above object is a light source for emitting output light for forming a three-dimensional stereoscopic output;
  • a storage tank for storing an output material for forming the three-dimensional stereoscopic output by the output light emitted from the light source side;
  • a galvanometer positioned between the light source and the reservoir and adjusting an optical path of the output light emitted from the light source side;
  • Focusing correction means located on an optical path of the output light between the galvanometer and the reservoir and correcting a focus of the output light passing through the galvanometer;
  • tilting means coupled to the reservoir and tilting the reservoir.
  • the reflector may further include a reflector configured to change a traveling direction of the output light emitted from the light source side, wherein the reflector is located at the front side or the rear side of the focusing correction means on the optical path of the output light. You may.
  • the light source may be another feature that is a laser (laser) or ultraviolet light.
  • the focusing correction means may be another feature of an F-theta lens or a telecentric F-theta lens.
  • the F-theta lens or the telecentric F-theta lens may be further characterized by being capable of adjusting the height or the angle of the lens center.
  • the output plate which is located above or inside the reservoir, and supports the output formed by being cured by the output light; may further comprise a further feature.
  • the tilting means may be further characterized by tilting the reservoir such that one side and the other side of the reservoir are tilted in the same direction.
  • the tilting means the tilting support portion that is coupled to the holding tank and includes a tilting rotation axis of the hinge coupling that is the center of the reservoir is tilted; And a tilting driving part which is hinged to the tilting support part and drives the other side of the reservoir up or down to tilt the reservoir, thereby allowing the reservoir to be tilted.
  • the three-dimensional printer and its light output device can correct an error that may be caused by adjusting the irradiation path of light emitted from the light source side, thereby improving the precision of the light irradiated to the output plate side. Therefore, the reproduction accuracy of the output molding is improved, and there is an effect of outputting a high quality molding.
  • the pressure can be effectively dispersed by the viscosity and density of the output plate and the cured resin, thereby maintaining parallelism between the water tank and the output plate after tilting. Therefore, it is possible to suppress or correct the occurrence of errors or errors, such as tilting, which may occur due to non-uniform thickness of each layer of the output, thereby improving the reproducibility of the three-dimensional molded product.
  • FIG. 1 is a partial perspective view schematically showing a part of a three-dimensional printer optical output device and a three-dimensional printer according to an embodiment of the present invention.
  • FIGS. 2 and 3 are side cross-sectional views schematically illustrating a light correction in a three-dimensional printer optical output device and a three-dimensional printer according to an embodiment of the present invention.
  • FIGS. 4 and 5 are side cross-sectional views schematically illustrating the tilting of the reservoir in the three-dimensional printer optical output device and the three-dimensional printer according to an embodiment of the present invention.
  • FIG. 1 is a partial perspective view schematically showing a part of a three-dimensional printer optical output device and a three-dimensional printer according to an embodiment of the present invention
  • Figures 2 and 3 are a three-dimensional printer optical output device according to an embodiment of the present invention
  • 4 and 5 are schematic cross-sectional views for explaining optical correction in a three-dimensional printer
  • FIGS. 4 and 5 are schematic views for explaining tilting of a storage tank in a three-dimensional printer optical output device and a three-dimensional printer according to an exemplary embodiment of the present invention.
  • Side section view
  • a three-dimensional printer optical output device may include a light source, a reservoir, a galvanometer, and focusing correction means, and more preferably further includes a reflector. It can also be done.
  • the light source 100 emits output light L for forming a three-dimensional stereoscopic output (not shown).
  • the light source 100 emits output light L that is capable of photocuring the liquid photocurable resin M, which is the output material M to be stored in the storage tank 200 to be described later as light having high straightness. It is preferable.
  • the light source 100 is preferably a light source that emits ultraviolet (UV) light or a laser.
  • the storage tank 200 is provided to store the output material M to form a three-dimensional stereoscopic output by the output light L irradiated and emitted from the light source 100 side.
  • the reservoir 200 is preferably made of a material having a light transmissive bottom surface.
  • the photocured resin cured by the output light L irradiated through the bottom of the storage tank 200 is combined with the output plate 170 to form a three-dimensional stereoscopic output.
  • the galvanometer 110 is also called a galvanometer mirror, which will be briefly referred to as a galvanometer 110.
  • the galvanometer 100 is located between the light source 100 and the reservoir 200. Then, the light path of the output light L emitted from the light source 100 side is adjusted.
  • Galvanometer 110 may be provided with a plurality, if necessary. In the drawings, two galvanometers 110 are provided as an example. It is also possible to form more than one or provided with one galvanometer 110 depending on the design.
  • the position at which the output light L is irradiated in the storage tank is adjusted using the galvanometer 110, and thus the output light L is irradiated only at the position at which the output light L is irradiated.
  • the edge of the spot of the output light L is out of focus such as distortion or dispersion that is distorted as the angle is inclined. This can cause problems. It is preferable to provide the focusing correction means 130 so that such a problem does not occur.
  • the focusing correction means 130 is located on the optical path of the output light L between the galvanometer 110 and the reservoir 200. Then, the focus of the output light L coming through the galvanometer 110 is corrected.
  • the focusing correction means 130 is preferably an F-theta lens or a telecentric F-theta lens.
  • Telecentric F-theta lenses are desirable because they make light such as lasers or ultraviolet light into telecentric illumination, allowing the chief rays of light to always meet perpendicular to the output plane, regardless of the angle of irradiation.
  • the output light L can be adjusted so that an incident angle incident on the F-theta lens or the telecentric F-theta lens that is the focusing correction means 130 can be vertical.
  • the optical path of the output light L can be adjusted to pass through the center of the F-theta lens or the telecentric F-theta lens that is the focusing correction means 130.
  • the center region of the surface of the lens may be a flat flat form, in which case it is preferable that the flat flat surface can be adjusted to allow the output light L to pass therethrough.
  • the height of the lens center can be adjusted, and it is also preferable that the angle can be adjusted.
  • FIG. 2 schematically shows a state in which the output light L is irradiated to a point on the output plate 170 (that is, a point on the lower side of the output plate), and forms a spot of the output light L.
  • FIG. (F) is shown. As such, it is important to accurately investigate the circular spot shape (F).
  • focusing correction such as an F-theta lens or a telecentric F-theta lens in the process of adjusting the position to which the output light L is to be irradiated, as referred from the lower side of the output plate 170 shown on the right side of FIG. 3. If there is no means 130, the spot shape (F) of the output light (L) irradiated to the edge side of the output plate 170 may be distorted in the form of an ellipse rather than circular.
  • the F-theta lens or the telecentric F-theta lens which is the focusing correction means 130, is positioned on the optical path of the output light L, thereby lowering the output plate 170 shown on the right side of FIG. 3.
  • the spot shape (F) of the laser irradiated on the lower side of the output plate 170 is corrected in a circle to be able to cure the photocurable resin (M) accurately and precisely.
  • the reflector 150 changes the traveling direction of the output light L emitted from the light source 100 side.
  • the reflector 150 outputs the output light L to the bottom surface of the reservoir 200.
  • the bottom surface of the reservoir 200 is preferably light transmissive.
  • the reflector 150 is preferably located at the front side or the rear side of the focusing correction means 130 on the optical path of the output light (L).
  • the reflector 150 is disposed on the rear side of the F-theta lens or the telecentric F-theta lens that is the focusing correction means 130.
  • FIGS. 1 to 5 a three-dimensional printer including a three-dimensional printer optical output device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 5.
  • the three-dimensional printer may include a light source, a reservoir, a galvanometer, a focusing correction means, and a tilting means, and more preferably, may further include a reflecting mirror, and further includes an output plate. It can also be done.
  • the light source 100, the reservoir 200, the galvanometer 110, the focusing correction means 130, and the reflector 150 are substantially the same as described above, and thus description thereof will be omitted and the output plate 170 may be omitted. And the tilting means will be described.
  • the output plate 170 is located above or inside the reservoir 200. At least a portion of the liquid photocurable resin, which is the output material M stored in the storage tank 200, is disposed to be locked. The output plate 170 supports an output (not shown) formed by photocuring by the output light L emitted from the light source 100.
  • the output plate 170 When the output plate 170 is photocured and a layer is formed, the output plate 170 is gradually moved upwards little by little, and gradually moved upward until molding of the output is completed.
  • the tilting means is coupled to and supported by the reservoir 200, and tilts the reservoir 200.
  • Such a tilting means may tilt the reservoir 200 such that one side and the other side of the reservoir 200 are tilted in the same direction.
  • Such tilting means preferably comprises a tilting support and a tilting drive.
  • the tilting support part is coupled to the reservoir 200, and includes a tilting rotation shaft of the hinge coupling 400 in which the reservoir 200 is tilted.
  • a tilting support part includes a tilting frame 230 coupled to the lower side of the reservoir 200 to support the reservoir 200.
  • the frame upper plate 250 is a case panel that separates the upper and lower spaces around the storage tank 200 and is fixedly coupled to the housing case (not shown) of the 3D printer. Therefore, the frame upper plate 250 is fixed to the base so that the reservoir 200 can be tilted.
  • the frame upper plate 250 is horizontally fixed about the hinged coupling 400 of the tilting rotation axis, and the hinge coupling 400 is pivoted so that the tilting frame 230 can be rotated within a predetermined angle range.
  • a hinge hole is provided in the frame upper plate 250 so that the tilting rotation shaft and the hinge coupling 400 can be provided as shown in the drawing.
  • the tilting driving part is hinged to the tilting support part so that the reservoir 200 can be tilted. More specifically, it is hinged to the tilting frame 230 of the tilting support. Then, the other side of the reservoir 200 is raised or lowered so that the reservoir 200 is tilted or leveled.
  • the tilting driving part may include a tilting motor 350, a bolt-type screw 330, and a nut-type shaft 310.
  • the tilting motor 350 is a motor driven to tint the reservoir 200.
  • the tilting motor 350 is preferably a step motor.
  • the step motor 350 functions as a synchronous motor when pulses are applied continuously and rapidly to enable precise control and to finely control the tilting angle of the tilting driver. It is preferable that the reservoir 200 is tilted or leveled by the rotation of the tilting motor 350.
  • the bolt screw 330 is rotated by the tilting motor 350.
  • the bolt-shaped screw 330 is formed on the outer surface of the bolt, it is preferable that the cross-sectional shape is formed of a trapezoidal bolt.
  • a bolt is also called a thread here, and it means the part which protruded in the cross section of the shape of the corrugated screw of a bolt. In the present specification, it is referred to as bolt acid.
  • Bolt-type screw 330 is coupled to rotate in engagement with the lower side of the nut-shaped shaft 310 as shown in the figure. Therefore, the nut-shaped shaft 310 is raised or lowered by the rotation of the bolt-type screw 330.
  • the upper end of the nut-shaped shaft 310 is hinged to the tilting frame 230 as shown. Therefore, as the nut-shaped shaft 310 rises, the tilting frame 230 becomes horizontal, and the tilting frame 230 is tilted as the nut-shaped shaft 310 descends.
  • the storage tank 200 becomes horizontal or tilted together with the tilting frame 230.
  • the reservoir can be tilted by the tilting means including the tilting support part and the tilting driving part, and releasability between the output (not shown) and the reservoir 200 is improved.
  • the three-dimensional printer and its optical output device can correct an error that may be caused by adjusting the traveling path of the output light emitted from the light source side, thereby improving the accuracy of the light irradiated to the output plate side. . Therefore, the reproduction accuracy of the output molding is improved, and there is an advantage of outputting a high quality molding.
  • the pressure and viscosity of the output plate and the cured resin can be effectively dispersed to maintain parallelism between the water tank and the output plate after tilting. Therefore, the thickness of each layer of the printed material may not be uniform, thereby preventing or correcting the occurrence of errors or errors, such as a tilt, which may be improved, thereby improving the reproducibility of the three-dimensional molded product.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)

Abstract

La présente invention concerne une imprimante tridimensionnelle et un dispositif de sortie optique de celle-ci. La présente invention comprend : une source de lumière pour émettre une lumière de sortie pour former une impression stéréoscopique tridimensionnelle ; une cuve de stockage pour stocker un matériau d'impression pour former l'impression stéréoscopique tridimensionnelle par la lumière de sortie émise depuis la source de lumière ; un galvanomètre, positionné entre la source de lumière et la cuve de stockage, pour ajuster un trajet optique de la lumière de sortie émise depuis la source de lumière ; et un moyen de correction de mise au point, positionné sur un trajet optique de la lumière de sortie entre le galvanomètre et la cuve de stockage, pour corriger le foyer de la lumière de sortie par l'intermédiaire du galvanomètre.
PCT/KR2017/000036 2016-01-05 2017-01-03 Imprimante 3d et dispositif de sortie optique associé Ceased WO2017119692A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780005853.6A CN108472874A (zh) 2016-01-05 2017-01-03 三维打印机及其光输出装置

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KR1020160001188A KR101780928B1 (ko) 2016-01-05 2016-01-05 3차원 프린터 및 이의 광출력 장치
KR10-2016-0001188 2016-01-05

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WO2017119692A1 true WO2017119692A1 (fr) 2017-07-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021107569A1 (fr) * 2019-11-29 2021-06-03 한국전자기술연구원 Module de source de lumière d'imprimante 3d et imprimante 3d

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102000922B1 (ko) 2017-08-31 2019-07-17 주식회사 디이엔티 금속 3d 프린터의 레이저 빔 사이즈 조절장치
KR102018570B1 (ko) 2017-11-03 2019-09-06 주식회사 쓰리딜라이트 3d 프린터의 자동정렬시스템
KR102188554B1 (ko) 2019-01-22 2020-12-09 주식회사 디이엔티 금속 3d 프린터의 레이저 헤드 광축 거리조절장치
KR102233026B1 (ko) * 2019-05-30 2021-03-30 주식회사 덴티스 부하 저감 3d 프린터의 동작방법
KR102102730B1 (ko) * 2019-10-02 2020-04-21 이형천 타워형 3d 프린터 및 이를 이용한 구조물의 건설 방법
KR102250986B1 (ko) 2020-02-25 2021-05-14 주식회사 디이엔티 3d 프린터용 노즐유닛의 레이저 헤드
KR102514484B1 (ko) * 2021-03-23 2023-03-27 중앙대학교 산학협력단 경계면과 표면 처리를 가능하게 하는 3차원 콘크리트 프린팅 시스템 및 프린팅 방법

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JPS63145016A (ja) * 1986-12-10 1988-06-17 Fujitsu Ltd 立体形状形成装置
JP2013047003A (ja) * 2004-09-21 2013-03-07 3D Systems Inc ３ｄプリンタを保守点検する装置および方法
KR20150099026A (ko) * 2014-02-21 2015-08-31 (주) 디토스 Fdm 3d 프린터의 필라멘트 이송의 자동 감시 장치 및 감시 방법
CN104228068A (zh) * 2014-09-11 2014-12-24 东莞市竞技者数码科技有限公司 一种快速成型的sla 3d打印机及其打印方法
CN204172356U (zh) * 2014-10-14 2015-02-25 上海联泰三维科技有限公司 用于底投影式光固化快速成型的分离机构及该成型装置

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Publication number Priority date Publication date Assignee Title
WO2021107569A1 (fr) * 2019-11-29 2021-06-03 한국전자기술연구원 Module de source de lumière d'imprimante 3d et imprimante 3d

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KR101780928B1 (ko) 2017-09-26
KR20170082044A (ko) 2017-07-13
CN108472874A (zh) 2018-08-31

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