WO2020177628A1 - 一种3d打印机构 - Google Patents

一种3d打印机构 Download PDF

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Publication number
WO2020177628A1
WO2020177628A1 PCT/CN2020/077188 CN2020077188W WO2020177628A1 WO 2020177628 A1 WO2020177628 A1 WO 2020177628A1 CN 2020077188 W CN2020077188 W CN 2020077188W WO 2020177628 A1 WO2020177628 A1 WO 2020177628A1
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stage
printing
motor
printing mechanism
fixed plate
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PCT/CN2020/077188
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English (en)
French (fr)
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赵明
廖绍伟
周绍林
苏启聪
李富华
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华南理工大学
布鸣特(佛山)光电科技有限公司
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Publication of WO2020177628A1 publication Critical patent/WO2020177628A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • 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
    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention belongs to the technical field of microlithography 3D printing, and particularly relates to a 3D printing mechanism.
  • Digital Light Processing is a 3D printing technology that has emerged in recent years.
  • digital micromirror elements are used to project product cross-sectional graphics onto the surface of liquid bright resin, so that the irradiated resin is light-cured layer by layer.
  • the digital light processing projector uses the digital micromirror device DMD chip as the imaging device.
  • the 3D printers of miniature digital light processing projection devices used on the market all use a single-sided superimposed structure. Each layer of the printed model has only a pair of cut surface projection and solidification. The printing surface and the projection surface overlap.
  • the advantage is the structure Simple and fast printing speed.
  • the main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a 3D printing mechanism, which enlarges the effective area of printing to several times the original size on the basis of maintaining the resolution, and realizes larger size microlithography 3D print.
  • a 3D printing mechanism including a printing part and a lifting part
  • the printing part includes a stage, a first motor, a digital light processing projector, and a resin tank;
  • the stage is connected with the first motor, and the first motor drives the stage to rotate when it works;
  • the projection plane projected by the digital light processing projector passes through the resin tank and is printed on at least part of the stage;
  • the lifting part is connected to the stage of the printing part.
  • the lifting part includes a second motor, a stage bearing shaft, and a screw rod threadedly connected to the bearing shaft.
  • the second motor drives the screw rod to rotate, thereby driving the stage bearing shaft to move along the length of the screw rod.
  • a limit plate is installed on the screw rod to prevent the bearing shaft of the stage from falling off.
  • the stage is circular to reduce the volume of the printing mechanism.
  • the printing part includes a fixed plate and a supporting rod
  • the fixed plate is installed on the supporting rod and can rotate relative to the supporting rod
  • the projector is installed on the fixed plate
  • the first motor drives the fixed plate to rotate and further drives the projector to rotate.
  • a first gear is installed on the output shaft of the first motor
  • a second gear is installed at the connection between the fixed disk and the support rod
  • the second gear is relatively fixed to the fixed disk
  • the first gear meshes with the second gear
  • the fixing plate is provided with several hollow structures to facilitate fixing the projector.
  • the present invention has the following advantages and beneficial effects:
  • the present invention only adds a motor to the prior art, realizes the function of several times the area increase, has a simple structure and low energy consumption.
  • the present invention increases the printing area without sacrificing printing accuracy, and meets the requirements of large-size and high-precision printing.
  • FIG. 1 is a schematic structural diagram of a 3D printing mechanism according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view of a 3D printing mechanism according to an embodiment of the present invention.
  • FIG. 3 is a schematic view of the relative position of the projector of the 3D printing mechanism, the first motor, and the fixed plate in the second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the relative positions of the projector, the first motor and the fixed plate of the 3D printing mechanism according to the second embodiment of the present invention from another perspective.
  • 1-digital light processing projector 2-circular stage; 3-first motor; 4-screw rod; 5-resin tank; 6-second motor; 7-stage bearing shaft; 8- Fixed disk; 9-support rod; 10-first gear; 11-second gear.
  • a 3D printing mechanism includes a printing part and a lifting part
  • the printing part includes a circular stage 2, a first motor 3, a digital light processing projector 1, a resin tank 5;
  • the stage is connected to the stage motor, and the stage motor drives the stage to rotate when it works;
  • the projection plane projected by the digital light processing projector passes through the resin tank and is printed on at least part of the stage;
  • the lifting part includes a second motor, a bearing shaft of the stage, a screw rod 4 threadedly connected with the bearing shaft, and a limit plate.
  • the second motor drives the screw rod to rotate, thereby driving the bearing shaft of the stage to move along the length of the screw rod. , So that the stage moves along the length of the screw rod.
  • the projection plane projected by the digital light processing projector is printed on the stage through the resin groove.
  • the first motor rotates a certain angle to drive the stage to rotate at a certain angle.
  • the projector switches to the next plane to solidify this area, it cycles several times.
  • the second motor raises a certain height, and repeats the above process to print the second layer until the finished product is printed.
  • a 3D printing mechanism includes a printing part and a lifting part; the printing part includes a fixed part.
  • Plate 8, support rod 9, fixed plate is installed on the support rod and can rotate relative to the support rod; the projector is installed on the fixed plate; the first motor output shaft is installed with a first gear 10, the fixed plate and the support rod
  • a second gear 11 is installed at the connection.
  • the second gear is relatively fixed to the fixed disk, and the first gear meshes with the second gear; the first motor drives the fixed disk to rotate and further drives the projector to rotate.
  • the fixing plate is provided with several hollow structures to facilitate fixing the projector.
  • the other structural composition and connection relationship of this embodiment are the same as those of the first embodiment.
  • the first motor drives the rotation of the projector to increase the printing area.

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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)

Abstract

本发明公开了一种3D打印机构，包括打印部分和提升部分；所述打印部分包括载物台、第一电机、数码光处理投影仪、树脂槽；载物台和载物台电机连接，载物台电机工作时带动载物台旋转；数码光处理投影仪投射出的投影平面透过树脂槽并印在至少部分载物台上；所述提升部分连接打印部分的载物台。本发明在保持分辨率的基础上将打印有效面积扩大为原来的数倍，实现更大尺寸的微光刻3D打印。

Description

一种3D打印机构 技术领域
本发明属于微光刻3D打印技术领域，特别涉及一种3D打印机构。
背景技术
数字光处理(Digital Light Processing，DLP)是近年出现的3D打印技术，在加工产品时，利用数字微镜元件将产品截面图形投影到液体光明树脂表面，使照射的树脂逐层进行光固化。数码光处理投影机是以数字微镜装置DMD芯片作为成像器件。通过调节微镜的角度实现反射投影的仪器。目前市面上使用的微型数码光处理投影器件的3D打印机都是使用单面叠加结构，其打印模型的每一层的图形只有一副切面投影固化形成，其打印面和投影面重合，优点是结构简单，打印速度快。但如果想增加打印的有效面积，若采用放大投影面的方法，则会降低投影面的dpi大大牺牲打印精度，若采用多台投影仪拼接大投影面的方法会使成本翻倍，采用移动投影仪或光路的方法则会增加电机数量，使其简单的结构破坏同时电机的引进会使得误差增多，显然都不是成熟可行的技术，不能满足广大市场的需求。
发明内容
本发明的主要目的在于克服现有技术的缺点与不足，提供一种3D打印机构，在保持分辨率的基础上将打印有效面积和扩大为原来的数倍，实现更大尺寸的微光刻3D打印。
本发明的目的通过以下的技术方案实现：一种3D打印机构，包括打印部分 和提升部分；
所述打印部分包括载物台、第一电机、数码光处理投影仪、树脂槽；
载物台和第一电机连接，第一电机工作时带动载物台旋转；
数码光处理投影仪投射出的投影平面透过树脂槽并印在至少部分载物台上；
所述提升部分连接打印部分的载物台。
优选的，所述提升部分包括第二电机、载物台承重轴、与承重轴螺纹连接的螺丝杆，第二电机驱动螺丝杆转动，进而带动载物台承重轴沿螺丝杆长度方向移动。
更进一步的，所述螺丝杆上安装有限位板，以防止载物台承重轴脱落。
优选的，所述载物台为圆形，以减小打印机构体积。
优选的，所述打印部分包括固定盘、支撑杆，固定盘安装于支撑杆上并可相对支撑杆转动；投影仪安装于固定盘上；第一电机驱动固定盘旋转并进一步带动投影仪旋转。
更进一步的，所述第一电机输出轴安装有第一齿轮，所述固定盘与支撑杆连接处安装有第二齿轮，第二齿轮与固定盘相对固定，第一齿轮与第二齿轮啮合。
更进一步的，所述固定盘设有若干镂空结构，以便于固定投影仪。
本发明与现有技术相比，具有如下优点和有益效果：
1、本发明仅在现有技术上添加了一个电机，实现了数倍面积增大的功能，结构简单，耗能少。
2、本发明增大打印面积的同时不牺牲打印精度，满足大尺寸高精度打印需 求。
附图说明
图1为本发明实施例一3D打印机构结构示意图。
图2为本发明实施例一3D打印机构剖视图。
图3为本发明实施例二3D打印机构投影仪与第一电机、固定盘相对位置一个视角示意图。
图4为本发明实施例二3D打印机构投影仪与第一电机、固定盘相对位置另一个视角示意图。
其中：1-数码光处理投影仪；2-圆形载物台；3-第一电机；4-螺丝杆；5-树脂槽；6-第二电机；7-载物台承重轴；8-固定盘；9-支撑杆；10-第一齿轮；11-第二齿轮。
具体实施方式
下面结合实施例及附图对本发明作进一步详细的描述，但本发明的实施方式不限于此。
实施例一
如图1-2所示，一种3D打印机构，包括打印部分和提升部分；
所述打印部分包括圆形载物台2、第一电机3、数码光处理投影仪1、树脂槽5；
载物台和载物台电机连接，载物台电机工作时带动载物台旋转；
数码光处理投影仪投射出的投影平面透过树脂槽并印在至少部分载物台上；
所述提升部分包括第二电机、载物台承重轴、与承重轴螺纹连接的螺丝杆4、限位板，第二电机驱动螺丝杆转动，进而带动载物台承重轴沿螺丝杆长度方向移动，从而使载物台沿螺丝杆长度方向移动。
本发明的工作过程：数码光处理投影仪投射出来的投影平面透过树脂槽印在载物台上，固化好此区域的材料后，第一电机旋转一定角度带动载物台转动一定角度，此时投影仪切换下一个平面对此区域进行固化，以此循环若干次，待第一层平面打印完成后，第二电机抬动一定高度，重复上述过程打印第二层平面直至打印完成成品。
实施例二
如图3-4所示，所述第一电机可改为带动投影仪的旋转，进而增大打印面积，具体的：一种3D打印机构，包括打印部分和提升部分；所述打印部分包括固定盘8、支撑杆9，固定盘安装于支撑杆上并可相对支撑杆转动；投影仪安装于固定盘上；所述第一电机输出轴安装有第一齿轮10，所述固定盘与支撑杆连接处安装有第二齿轮11，第二齿轮与固定盘相对固定，第一齿轮与第二齿轮啮合；第一电机驱动固定盘旋转并进一步带动投影仪旋转。所述固定盘设有若干镂空结构，以便于固定投影仪。
本实施例其他结构组成与连接关系与实施例一相同。通过第一电机带动投影仪的转动，增大打印面积。
上述实施例为本发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。

Claims (7)

  1. 一种3D打印机构，其特征在于，包括打印部分和提升部分；
    所述打印部分包括载物台、第一电机、数码光处理投影仪、树脂槽；
    载物台和第一电机连接，第一电机工作时带动载物台旋转；
    数码光处理投影仪投射出的投影平面透过树脂槽并印在至少部分载物台上；
    所述提升部分连接打印部分的载物台。
  2. 根据权利要求1所述的3D打印机构，其特征在于，所述提升部分包括第二电机、载物台承重轴、与承重轴螺纹连接的螺丝杆，第二电机驱动螺丝杆转动，进而带动载物台承重轴沿螺丝杆长度方向移动。
  3. 根据权利要求2所述的3D打印机构，其特征在于，所述螺丝杆上安装有限位板。
  4. 根据权利要求1所述的3D打印机构，其特征在于，所述载物台为圆形。
  5. 根据权利要求1所述的3D打印机构，其特征在于，所述打印部分包括固定盘、支撑杆，固定盘安装于支撑杆上并可相对支撑杆转动；投影仪安装于固定盘上；第一电机驱动固定盘旋转并进一步带动投影仪旋转。
  6. 根据权利要求5所述的3D打印机构，其特征在于，所述第一电机输出轴安装有第一齿轮，所述固定盘与支撑杆连接处安装有第二齿轮，第二齿轮与固定盘相对固定，第一齿轮与第二齿轮啮合。
  7. 根据权利要求5所述的3D打印机构，其特征在于，所述固定盘设有若干镂空结构。
PCT/CN2020/077188 2019-03-06 2020-02-28 一种3d打印机构 WO2020177628A1 (zh)

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CN209920541U (zh) * 2019-03-06 2020-01-10 华南理工大学 一种3d打印机构
CN109834936A (zh) * 2019-03-06 2019-06-04 华南理工大学 一种3d打印机构
CN113787708A (zh) * 2021-07-07 2021-12-14 珠海市三绿实业有限公司 一种光敏树脂3d打印方法
CN113799387A (zh) * 2021-07-13 2021-12-17 珠海市三绿实业有限公司 聚乳酸三维打印方法

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