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    一种基于支撑的3D打印零部件ID标记方法
    102.
    发明申请
    一种基于支撑的3D打印零部件ID标记方法 审中-公开

    公开(公告)号：WO2020082664A1

    公开(公告)日：2020-04-30

    申请号：PCT/CN2019/077523

    申请日：2019-03-08

    Applicant: 南京前知智能科技有限公司

    Inventor： 张小宋 ,  庞恩林 ,  杜云汉 ,  高慧 ,  曾刚 ,  金亚鸣

    IPC: A61C13/08 ,  B33Y10/00 ,  B33Y40/00 ,  G06F17/50

    Abstract: 一种基于支撑（3）的3D打印零部件ID标记方法，按照如下步骤进行：三维模型的摆放，在设计软件中，将实际要求精度要求不高的模型的表面向下摆放，作为悬垂面；在一定立体角范围内微调，软件自动遍历三维模型高度，选择三维模型纵向最低高度的情况作为最终摆放方式；在设计软件中添加标签支撑（5，6）；添加其他正常支撑（3）；用3D打印机打印出携带标记的零部件。采用支撑图样标记的方法，不仅能够迅速、正确对打印零件进行区分，还具有传统标记所不具有的优势：无需破坏原零件结构；不会占用额外的成型空间；一次成型，降低了打印材料损耗并降低了打印时间；不会额外增加车金和抛光工作量。

    MATERIAL DISPENSING APPARATUS
    104.
    发明申请
    MATERIAL DISPENSING APPARATUS 审中-公开

    公开(公告)号：WO2020081058A1

    公开(公告)日：2020-04-23

    申请号：PCT/US2018/056029

    申请日：2018-10-16

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MANSELL, Rhys ,  JOWKAR, Mohammad ,  GRANADOS ASENSIO, Vicente

    IPC: B29C64/205 ,  B29C64/343 ,  B29C64/329 ,  B33Y30/00 ,  B33Y40/00

    Abstract: In one example, a material dispensing apparatus comprises a plurality of material containers, wherein the plurality of material containers comprises a first set of material containers arranged to contain a first material and a second set of material containers arranged to contain a second, different, material, and each material container of the second set is located relative to a respective material container of the first set to form a pair of material containers. In use, the material dispensing apparatus is controllable to move across a build platform of an additive manufacturing system. Each of the plurality of material containers comprises an outlet mechanism that is independently controllable, relative to outlet mechanisms of others of the plurality of material containers, such that each pair of material containers selectively dispenses at least a portion of a respective amount of material onto a respective portion of the build platform as the material dispensing apparatus moves across the build platform, such that, collectively, the plurality of material containers forms a complete layer of material on the build platform as the material dispensing apparatus performs a single pass across the build platform.

    HYBRID MANUFACTURING APPARATUS
    106.
    发明申请
    HYBRID MANUFACTURING APPARATUS 审中-公开

    公开(公告)号：WO2020070677A1

    公开(公告)日：2020-04-09

    申请号：PCT/IB2019/058402

    申请日：2019-10-02

    Applicant: HU, Dongming

    Inventor： HU, Dongming

    IPC: A61B6/04 ,  B29C64/20 ,  B29C64/209 ,  B29C64/30 ,  B29C64/321 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y80/00

    Abstract: A hybrid manufacturing apparatus utilizing both additive and subtractive manufacturing processes has a cutting mechanism, a magazine, and a deposition nozzle. A cutting mechanism engages and modifies material fed from a magazine, the finished material of this process to be positioned by a deposition nozzle. More specifically, the cutting mechanism provides a chamber supporting an inlet, an outlet, and at least one cutting head. The inlet receives fresh material, the cutting head is positioned within the chamber to create the desired contours in or on the material, and the material then exits the chamber via the outlet to be deposited according to instructions extracted from a digital model in a form of numerical control (NC) programming language. This model is natively subdivided into individual constructs each defining a set of values to guide creation of corresponding physical sections, and the placement thereof.

    SETTING AIR FLOW RATES FOR 3D PRINTING
    108.
    发明申请
    SETTING AIR FLOW RATES FOR 3D PRINTING 审中-公开

    公开(公告)号：WO2020068075A1

    公开(公告)日：2020-04-02

    申请号：PCT/US2018/052987

    申请日：2018-09-26

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： DOMINGUEZ MANCHADO, Cristina ,  BAUTISTA BALLESTER, Jordi ,  CANO ARRIBAS, Emilio Carlos

    IPC: B29C35/16 ,  B29C64/364 ,  B29C64/393 ,  B33Y40/00 ,  B33Y50/02

    Abstract: An additive manufacturing system includes a cooling module to cause a first dominant air flow over a first print zone area and a second dominant air flow over a second print zone area. An energy source is to apply energy to the print zone. A controller is to (i) determine air flow characteristics by: controlling the cooling module to cause the first and second air flows to have respective first and second predetermined flow rates, controlling the energy source to apply energy to the print zone, and determining at least one of a parameter of the energy source and a characteristic of the first air flow and the second air flow. The controller is also to (ii) set at least one of the first and second air flow rates to be used during the processing of subsequent 3D printing operations based on the determined parameter or characteristic.

    AUTOMATED 3D-PRINTING OF HOLLOW OBJECTS
    109.
    发明申请
    AUTOMATED 3D-PRINTING OF HOLLOW OBJECTS 审中-公开

    公开(公告)号：WO2020065650A1

    公开(公告)日：2020-04-02

    申请号：PCT/IL2019/051061

    申请日：2019-09-25

    Applicant: STRATASYS LTD.

    Inventor： BRESSLER, Yoav ,  SHITRIT, Yaniv ,  EDER, Naftali Emanuel

    IPC: B29C64/40 ,  B29C64/35 ,  B29C64/386 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/00 ,  B29C64/106 ,  B29C33/44 ,  B29C33/76

    Abstract: Methods, particularly automated methods, are provided, as well as 3D-printed composite and hollow objects and 3D-printing systems for printing them. Methods comprise deriving a central line of a hollow 3D object model, calculating reference point(s) and/or line(s) along an inner surface of the hollow 3D object model, and filling the hollow 3D object model with material that comprises a thread defined with respect to the central line and the reference point(s) and/or line(s) and with filling material surrounding the thread. The support construction thus formed may be removed from the 3D object by pulling on the thread, extracting it and the surrounding support filling from the hollow object, thus enabling 3D-printing of convoluted or elongated hollow objects and objects with narrow openings. The parameters of the thread, such as type of curve and thickness, are selected to ensure thread extraction without risk of tearing or knotting the thread.

    INSTALLATION DE FABRICATION ADDITIVE PERFECTIONNEE
    110.
    发明申请
    INSTALLATION DE FABRICATION ADDITIVE PERFECTIONNEE 审中-公开

    公开(公告)号：WO2020053535A1

    公开(公告)日：2020-03-19

    申请号：PCT/FR2019/052153

    申请日：2019-09-16

    Applicant: CENTRE TECHNIQUE DES INDUSTRIES MECANIQUES

    Inventor： BOUCAUD, Benoît ,  CALVES, Paul ,  PETAVY, Quentin

    IPC: B22F3/00 ,  B33Y30/00 ,  B33Y40/00

    Abstract: L'invention concerne une installation de fabrication additive pour produire des pièces métalliques. Elle comprend: un dispositif de stratification pour superposer une pluralité de couches de particules d'un matériau métallique pulvérulent; un dispositif d'impression pour imprimer un liant sur chacune desdites couches de manière à lier entre elles des particules métalliques destinées à former lesdites pièces métalliques, tandis que les particules métalliques non liées (23) s'accumulent autour des particules métalliques liées (25) en formant un seul bloc stratifié (46); et, un dispositif d'extraction (28) desdites particules non liées (23) pour dégager lesdites pièces de particules liées. Ledit dispositif d'extraction (28) comprend une cloche (35) présentant une pluralité d'orifices (34, 36, 38, 40) venant coiffer ledit seul bloc stratifié(46) pour pouvoir injecter un gaz à travers une partie des orifices (34, 36) de ladite pluralité d'orifices.

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