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1
CN212528719U
一种桌面级3D打印设备用光路结构
Grant
Publication/Patent Number: CN212528719U Publication Date: 2021-02-12 Application Number: 202021118433.4 Filing Date: 2020-06-16 Inventor: 郭艳玲   李健   王扬威   戴佳铭   庒煜   高志宏   王传银   张慧   Assignee: 哈尔滨自由智造科技开发有限公司   IPC: B29C64/268 Abstract: 一种桌面级3D打印设备用光路结构,它涉及一种3D打印设备光路结构。本实用新型解决了现有3D打印设备的光路结构保护效果、轻便性较差,空间利用率也较低,无法适应桌面级3D打印设备的问题。包括激光管(1)、光路中间防尘连接件(2)、激光器架、光路支架、反射镜(3)、扩束镜(4)、震镜(5)和场镜(6);所述激光器支架竖直设置,所述光路支架水平设置,所述光路支架的后端通过光路中间防尘连接件(2)与所述激光器架的上端连接,激光管(1)竖直安装在所述激光器架内,反射镜(3)、扩束镜(4)、震镜(5)由后至前依次安装在所述光路支架上,场镜(6)安装在震镜(5)的下表面。本实用新型用于桌面级3D打印设备上。
2
EP3781386A1
SYSTEM AND METHOD FOR ROTATIONAL 3D PRINTING
Publication/Patent Number: EP3781386A1 Publication Date: 2021-02-24 Application Number: 19788398.6 Filing Date: 2019-04-16 Inventor: Pan, Nick   Assignee: Pan, Nick   IPC: B29C64/268
3
CN212528704U
适用于3D打印设备光斑大小调节的装置及3D打印设备
Grant
Publication/Patent Number: CN212528704U Publication Date: 2021-02-12 Application Number: 202020627074.9 Filing Date: 2020-04-23 Inventor: 徐飞   Assignee: 上海众化智能科技有限公司   IPC: B29C64/135 Abstract: 本实用新型提供了一种适用于3D打印设备光斑大小调节的装置及3D打印设备,包括:音圈电机、第二支架4、直线导轨5、音圈电机动子固定支架6、可动光学镜片固定支架7、音圈电机定子8、音圈电机动子9、可动光学镜片10和部分固定光学镜片11;所述音圈电机能够调节可动光学镜片10与部分固定光学镜片11两者之间的距离变化使激光通过光学镜片实现调节光斑大小的作用;所述音圈电机动子9在电磁作用下在直线导轨5上往复运动;本实用新型能够充分通过音圈电机电磁感应传动的特性,在用软件控制它运动时精密度高,能够正确的快速找到工作过程中所需要大光斑的位置和小光斑的位置。
4
US2021053280A1
Electron Beam Patterning System In Additive Manufacturing
Publication/Patent Number: US2021053280A1 Publication Date: 2021-02-25 Application Number: 17/091,915 Filing Date: 2020-11-06 Inventor: Demuth, James A.   Toomre, Erik   Leard, Francis L.   Kamshad, Kourosh   Fees, Heiner   Berdichevsky, Eugene   Assignee: Seurat Technologies, Inc.   IPC: B29C64/153 Abstract: A method and an apparatus involve applying a pattern on an addressable patternable cathode unit. The cathode unit is stimulated to emit an electron beam pattern. A patterned image in the electron beam pattern is positioned to a desired position such directly to as a powder bed for additive manufacturing or to an electron beam addressed light valve for controlling spatial patterns on an optical signal for powder bed manufacturing.
5
CN109774128B
基于DMD的光刻与打印一体化设备及其构建方法
Grant
Publication/Patent Number: CN109774128B Publication Date: 2021-01-08 Application Number: 201910189178.8 Filing Date: 2019-03-13 Inventor: 刘华   罗钧   张莹   陆子凤   Assignee: 东北师范大学   IPC: B29C64/135 Abstract: 本发明基于DMD的光刻与打印一体化设备及其构建方法,属于光学实验辅助结构设备领域,包括DMD空间光调制器、385nmLED光源、管透镜I、半透半反镜、管透镜II、CCD相机、45°反射镜、投影物镜、手动大行程竖直位移台、旋转平台、中空三维压电平台、样品台、打印盒、二维压电平台、转接架、Z方向位移机械杆;本发明可以实现平面光刻和三维打印双重功能,并且提供了系统的构建方法,并且系统结构搭建简单,灵活性高,降低掩模成本,缩短光刻周期,可设计性强,并且能够达到亚微米级的分辨率;提高了工作效率缩短工作周期,避免了由于光刻溶液表面张力引起的结构失真问题;在制作任意三维连续复杂微结构方面提供了新的方法。
6
US2021001561A1
METHOD AND DEVICE FOR IMPROVING THE COMPONENT QUALITY OF OBJECTS MANUFACTURED BY AN ADDITIVE MANUFACTURING PROCESS
Publication/Patent Number: US2021001561A1 Publication Date: 2021-01-07 Application Number: 16/982,698 Filing Date: 2019-04-11 Inventor: Hamann, Joerg   Holfelder, Peter   Huemmeler, Ludger   Walter, Manuel   Assignee: EOS GmbH Electro Optical Systems   IPC: B29C64/393 Abstract: Disclosed is a method of providing control data for an additive manufacturing device. The method includes accessing computer-based model data of at least a portion of the object to be manufactured, generating at least one data model of a region of a building material layer to be selectively solidified for manufacturing the at least one object portion. The data model specifies solidification of the building material, and the end point of the at least one solidification path a set of energy introduction parameter values is specified which generates a reference value for the radiation power per unit area in the radiation impact area of the beam bundle on the building material which is lower than the reference value for the radiation power per unit area at other locations of the solidification path, and providing control data corresponding to the generated at least one data model for generating a control data set for the additive manufacturing device.
7
EP3771549A1
RESIN POWDER FOR SOLID FREEFORM FABRICATION, METHOD OF MANUFACTURING RESIN POWDER FOR SOLID FREEFORM FABRICATION, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3771549A1 Publication Date: 2021-02-03 Application Number: 20187835.2 Filing Date: 2020-07-27 Inventor: Ogawa, Satoshi   Iwatsuki, Hitoshi   Naruse, Mitsuru   Sun, Yunsheng   Assignee: Ricoh Company, Ltd.   IPC: B29C64/153 Abstract: A resin powder for solid freeform fabrication contains polyester-based resin particles comprising a polyester-based resin having a structural unit derived from polytetramethylene glycol, wherein the polyester-based resin particles have a melting point Tm higher than 215 degrees C and equal to or lower than 250 degrees C.
8
CN112339265A
一种用于光敏树脂的3D打印机系统及利用其的3D打印方法
Public
Publication/Patent Number: CN112339265A Publication Date: 2021-02-09 Application Number: 201910728818.8 Filing Date: 2019-08-08 Inventor: 杨武保   应华   俞红祥   Assignee: 安世亚太科技股份有限公司   IPC: B29C64/135 Abstract: 本发明公开了一种用于光敏树脂的3D打印机系统及利用其的3D打印方法,所述3D打印机系统包括:点光源发射装置;光路装置,其位于所述点光源发射装置的光路下游;透明材料制作的光敏树脂料槽,其位于所述光路装置的光路下游;点光源位移装置,其机械设置于所述点光源发射装置;光路位移装置,其机械设置于所述光路装置;光敏树脂料槽位移装置,其机械设置于所述光敏树脂料槽,所述光路装置包括一个半透镜,两个反射镜,所述半透镜位于所述两个反射镜之间,三者平行设置并相对于所述水平面成45度角。本发明实现了立体光固化,消除了现有技术中必须移动打印中的产品、而导致光敏树脂溶液被扰动、使得其上下层之间的纵向分辨率远低于横向分辨率的不足。
9
CN212528715U
一种打印头喷嘴组件及3D打印系统
Grant
Publication/Patent Number: CN212528715U Publication Date: 2021-02-12 Application Number: 202020380645.3 Filing Date: 2020-03-23 Inventor: 金晴宇   Assignee: 麦递途医疗科技(上海)有限公司   IPC: B29C64/209 Abstract: 本申请公开了一种打印头喷嘴组件及3D打印系统,该打印头喷嘴组件包括:喷嘴以及激光单元,所述喷嘴用于喷射一喷射物至目标打印物体表面,所述激光单元设置在所述喷嘴的外侧周围,其中,所述激光单元发射激光照射并加热目标打印物体表面的特定区域。该3D打印系统,包括上述的打印头喷嘴组件。本申请适用于熔融喷射堆积成型原理的3D打印系统,其可对3D打印过程中最关键位置进行加热,激光加热速度快,可以有效提高3D打印的效率速度和产量;本申请中的激光照射可不受遮挡,不受打印头喷嘴运动的影响。
10
US2021008757A1
DEVICE FOR APPLYING LAYERS OF PASTE FOR A MACHINE FOR MANUFACTURING CERAMIC PIECES BY STEREOLITHOGRAPHY
Publication/Patent Number: US2021008757A1 Publication Date: 2021-01-14 Application Number: 16/923,522 Filing Date: 2020-07-08 Inventor: Chaput, Christophe   Gaignon, Richard   Nguyen, Marc   Rousselet, Nicolas   Assignee: S.A.S 3DCeram-Sinto   IPC: B28B1/00 Abstract: A device for applying a paste in layers for a machine for manufacturing ceramic pieces by stereolithography, the device including a blade holder configured to be moved in translation; a blade element made of one of a blade and at least two parallel blades, the blade element being arranged on the blade holder and being configured to scrape, during the translational movement of the blade holder, a mass of paste brought in front of the blade element in order to spread the mass of paste into a layer; and a paste distributing component arranged in front of the blade element, wherein the paste distributing component consists of a shield for pushing the paste, the shield being formed of an elongate part including a vertical portion in assembled position on the device, the vertical portion of the shield being secured to the blade element while leaving the lower border region of the blade element free in order to allow the scraping of the paste, an upper portion of the elongated part being further folded in the direction of forward movement of the blade holder in order to form an overhanging portion, the lower face of the overhang constituting with the free face of the vertical portion of the pushing shield a containment area for the paste for the distribution and spreading of the paste.
11
US2021008795A1
POWDER BED FUSION MODEL AND METHOD OF FABRICATING SAME
Publication/Patent Number: US2021008795A1 Publication Date: 2021-01-14 Application Number: 17/037,257 Filing Date: 2020-09-29 Inventor: Hagiwara, Masashi   Kimura, Yusei   Assignee: Aspect Inc.   IPC: B29C64/153 Abstract: Provided are a powder bed fusion model having improved model strength and a method of fabricating the same. Applying a laser beam to a layer of a resin powder (8) includes: applying the laser beam with a first energy to a modeling area (ma1) in the first layer of the resin powder from the bottom among n layers of the resin powder, in the modeling area (ma2, ma3, man−2, man−1) in each of the second to (n−1)-th layers of the resin powder, applying the laser beam with the first energy to a projecting portion (PA2, PA3, PAn−1) projecting outward from at least one of the modeling areas in the vertically adjacent layers of the resin powder and to an overlapping portion (OA2, OA3, OAn−1) overlapping the modeling areas in the adjacent layers of the resin powder, lying on the inner side of the projecting portion, and having at least a width equal to the thickness of a layer of the resin powder, and applying the laser beam with a second energy lower than the first energy to a center portion on the inner side of the projecting portion and the overlapping portion; and applying the laser beam with the first energy to the modeling area (man) in the n-th layer of the resin powder.
12
US2021016509A1
ADAPTIVE MULTI-PROCESS ADDITIVE MANUFACTURING SYSTEMS AND METHODS
Publication/Patent Number: US2021016509A1 Publication Date: 2021-01-21 Application Number: 16/370,871 Filing Date: 2019-03-29 Inventor: Vora, Hitesh D.   Sanyal, Subrata   Assignee: The United States of America, as represented by the Secretary of the Navy   IPC: B29C64/393 Abstract: Apparatuses and methods are provided that provide adaptive multi-process additive manufacturing systems for monitoring, measuring, and controlling additive manufacturing processes. A first laser (e.g., a fiber laser) is used for melting and consolidating the powder, and a second laser is utilized for dual purpose: (a) for metrology to measure the surface roughness, dimensional accuracy, material properties, etc., and (b) based on the evaluated measurements to take corrective actions (laser ablation, etc.) to attain the desired surface finish and dimensional accuracy. Various elements provide defect detection, defect identification, and defect response actions which remove defect related material or address under print or missing material in a build object.
13
CN112248436A
基于多激光器的扫描路径规划方法、装置以及三维物体制造设备
Substantial Examination
Publication/Patent Number: CN112248436A Publication Date: 2021-01-22 Application Number: 202011015638.4 Filing Date: 2020-09-24 Inventor: 王朝龙   杨大风   Assignee: 湖南华曙高科技有限责任公司   IPC: B29C64/20 Abstract: 一种基于多激光器的扫描路径规划方法、装置以及三维物体制造设备,其中方法通过包括:将多个激光器呈阵列式设置于工作区域的上方,所述多个激光器是指四个以上的偶数个激光器;获取至少一个由相邻的四个激光器分别覆盖区域中重叠的部分,并将该部分记作核心区域,所述核心区域为矩形;从核心区域的每一条边的中点向外延伸,以将工作区域分为核心区域,以及由该相邻的四个激光器分别单独负责扫描的四个区域;在工作区域中根据待打印制件的扫描截面设置多条扫描线,并根据每一条扫描线所位于的区域确定对该扫描线分配对应的激光器,本发明基于多激光器的扫描路径规划方法、装置以及三维物体制造设备减少了扫描的搭接数量,从而提高了成型质量。
14
US2021031442A1
PLASMA-TREATED SHEETS FOR ADDITIVE MANUFACTURING
Publication/Patent Number: US2021031442A1 Publication Date: 2021-02-04 Application Number: 16/527,433 Filing Date: 2019-07-31 Inventor: Sinha, Nishant Kumar   Prakash, Om   Assignee: The Boeing Company   IPC: B29C64/147 Abstract: Illustrative examples of forming and using suitably adapted material in an additive manufacturing process includes operations of: exposing a first polymer sheet to a first plasma, such that an amine-functionalized sheet surface is formed; exposing a second polymer sheet to a second plasma, such that an epoxide-functionalized sheet surface is formed; and combining the amine-functionalized sheet and the epoxide-functionalized sheet, such that the amine-functionalized sheet surface contacts the epoxide-functionalized sheet surface. The workpiece is subsequently heated to form a structure, where heating of the workpiece causes covalent chemical bonds to form between the plasma-treated first polymer sheet and the plasma-treaded second polymer sheet.
15
US2021046708A1
ARRANGEMENT FOR ADJUSTING A POWDER FLOW IN RELATION TO THE CENTRAL LONGITUDINAL AXIS OF AN ENERGY BEAM
Publication/Patent Number: US2021046708A1 Publication Date: 2021-02-18 Application Number: 16/969,272 Filing Date: 2019-02-13 Inventor: Riede, Mirko   Brueckner, Frank   Hemschik, Rico   Willner, Robin   Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.   TECHNISCHE UNIVERSITAET DRESDEN   IPC: B29C64/321 Abstract: An arrangement for adjusting a powder flow in relation to the central longitudinal axis of an energy beam for a working head which is formed for powder application welding. There is a device for the two-dimensional or three-dimensional alignment of the powder supply in relation to the central longitudinal axis of the energy beam in a plane oriented at right angles to the central longitudinal axis of the energy beam. From one side, a linear beam is directed to the region in which the particles of the powdery material meet one another. At right angles thereto, there is arranged an optical detector array for locally resolved detection of intensities connected to an electronic evaluation unit designed to determine the shape, size and/or length of an irradiated region in which locally resolved intensities which exceed a predefinable threshold have been detected with the optical detector array. The irradiated region reaches from the surfaces of particles which the laser beam strikes with reduced power during the adjustment as far as a sub-region of the irradiated region which is arranged in the direction of a workpiece surface of accelerated powdery particles, in which the particles heated by the laser beam move divergently.
16
CN112223745A
一种具有辅助拆装结构光固化成型的3D打印机
Substantial Examination
Publication/Patent Number: CN112223745A Publication Date: 2021-01-15 Application Number: 202011019912.5 Filing Date: 2020-09-25 Inventor: 赵一凡   杨家兴   刘俊琦   Assignee: 武汉理工大学   IPC: B29C64/135 Abstract: 本发明公开了一种具有辅助拆装结构光固化成型的3D打印机,涉及光固化成型的3D打印机技术领域,具体为一种具有辅助拆装结构光固化成型的3D打印机,包括底座和安装架,所述底座的上方放置有机体,所述机体的顶部中间安装有上盖,所述液槽的内部上方安装有刮刀,所述安装架的表面左右两侧均连接有连接杆,且安装架位于刮刀的上方。该具有辅助拆装结构光固化成型的3D打印机设置有门板,门板位于机体的后侧,通过合页完成连接,门板的设置,能够从机体的后侧打开,露出内侧的滑道,从而便于对滑道上的滚轴进行移动,而滑道的上端是未封闭的状态,这样便于丝杆的取出,滑道和滚轴之间相互配合使用,利于通过滑道将丝杆向上移动,将丝杆整体取出。
17
US2021023793A1
DEVICES, SYSTEMS, AND METHODS FOR MONITORING A POWDER LAYER IN ADDITIVE MANUFACTURING PROCESSES
Publication/Patent Number: US2021023793A1 Publication Date: 2021-01-28 Application Number: 16/523,492 Filing Date: 2019-07-26 Inventor: Löfving, Björn   Karlsson, Kristofer   Assignee: ARCAM AB   IPC: B29C64/393 Abstract: Devices, systems, and methods for monitoring a powder layer in additive manufacturing are disclosed. A method includes receiving leading and trailing image data from an image signal processor that is optically coupled to a plurality of leading and trailing optical fibers arranged on a moving powder distributor, the leading and trailing image data corresponding to images of the powder layer, selecting at least one point on the powder bed that is located within a leading region of interest, determining first characteristics of the point, when the point is located within a trailing region of interest due to movement of the moving powder distributor, determining second characteristics of the point, and comparing the first characteristics to the second characteristics to monitor the powder layer distributed by the moving powder distributor.
18
US2021039167A1
ADDITIVE MANUFACTURING APPARATUS AND METHOD
Publication/Patent Number: US2021039167A1 Publication Date: 2021-02-11 Application Number: 17/079,652 Filing Date: 2020-10-26 Inventor: Ashton, Ian Robert Thomas   Kloss, Stephan   Sutcliffe, Christopher   Ferrar, Ben Ian   Assignee: RENISHAW PLC   IPC: B22F3/105 Abstract: This invention concerns a laser solidification apparatus for building objects by layerwise solidification of powder material. The apparatus including a build chamber containing a build platform, a device for depositing layers of powder material on to the build platform, an optical unit for directing a laser beam to selectively solidify areas of each powder layer and a spectrometer for detecting characteristic radiation emitted by plasma formed during solidification of the powder by the laser beam. The invention also relates to a spectrometer for detecting characteristic radiation generated by interaction of the metal with the or a further laser beam. The spectra recorded using the spectrometer may be used for feedback control during the solidification process.
19
US2021001559A1
DEVICE AND METHOD FOR CALIBRATING AN IRRADIATION SYSTEM OF AN APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE
Publication/Patent Number: US2021001559A1 Publication Date: 2021-01-07 Application Number: 16/968,656 Filing Date: 2019-02-05 Inventor: Thiel, Christiane   Assignee: SLM Solutions Group AG   IPC: B29C64/393 Abstract: A device (10) for calibrating an irradiation system (12) of an apparatus (14) for producing a three-dimensional work piece is suggested, the irradiation system (12) comprising a first irradiation unit (16) for selectively irradiating a first irradiation beam (18) along a first operating axis (20) onto an irradiation plane (22) and a second irradiation unit (24) for selectively irradiating a second irradiation beam (26) along a second operating axis (28) onto the irradiation plane (22), wherein the device (10) comprises: control unit (30) adapted to control the first irradiation unit (16) so as to irradiate the first irradiation beam (18) onto the irradiation plane (22) according to an irradiation pattern (32) and to control the second irradiation unit (24) so as to displace the second operating axis (28) relative to the irradiation plane (22) such that the second operating axis (28) traverses the irradiation pattern (32) produced by the first irradiation unit (16) onto the irradiation plane (22); and a detecting unit (34) adapted to detect process emissions emitted from a region of an impingement point (36) on the irradiation plane (22) at which the second operating axis (28) of the second irradiation unit (24) passes the irradiation plane (22) and to output signals indicative of the detected process emissions to the control unit (30); and wherein the control unit (30) is further adapted to determine a position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) on the irradiation plane (22); determine a position (x1 . . . n, y1 . . . n) of at least one intersection point (38) between the irradiation pattern (22) produced by the first irradiation unit (16) and the second operating axis (28) of the second irradiation unit (24) based on the signals output by the detecting unit (34); and calibrate the irradiation system (12) based on the determined position (x1 . . . n, y1 . . . n) of the irradiation pattern (32) produced by the first irradiation unit (16) and the determined position (x′S1, y′S1) of the at least one intersection point.
20
US2021053279A1
METHOD OF MANUFACTURING THREE-DIMENSIONALLY SHAPED OBJECT, ADDITIVE MANUFACTURING APPARATUS, AND POWDER DEPOSITING APPARATUS
Publication/Patent Number: US2021053279A1 Publication Date: 2021-02-25 Application Number: 16/935,483 Filing Date: 2020-07-22 Inventor: Murao, Hitoshi   Assignee: CANON KABUSHIKI KAISHA   IPC: B29C64/153 Abstract: A method of manufacturing a three-dimensionally shaped object includes a first powder-layer forming process in which a first portion of at least one thickness determining member forms a powder layer by moving in contact with powder, a solidifying process in which a solidified portion is formed in the powder layer formed in the first powder-layer forming process, a second powder-layer forming process, performed after the solidifying process, in which a second portion of the at least one thickness determining member forms a powder layer by moving in contact with the powder, and a renewal process performed between the first powder-layer forming process and the second powder-layer forming process. In the renewal process, the portion having been in contact with the powder is renewed such that the second portion is different from the first portion.
Total 80 pages