公开(公告)号：US10471497B2

公开(公告)日：2019-11-12

申请号：US14911866

申请日：2014-08-13

申请人： The ExOne Company

发明人： Michael J. Orange ,  Daniel T. Brunermer

IPC分类号： B22C9/02 ,  C08L5/00 ,  B33Y10/00 ,  B22C1/20 ,  B29C64/165

摘要： Methods are disclosed of making metal casting molds and components thereof by the three-dimensional printing process in which an untreated sand is used as the build material and a polymer is used as a component of the binder that is printed onto the build material.

公开(公告)号：US10144207B2

公开(公告)日：2018-12-04

申请号：US15319288

申请日：2015-05-07

申请人： The ExOne Company

发明人： Daniel T. Brunermer ,  Anthony S. Dugan ,  Thomas Lizzi

IPC分类号： B29C67/00 ,  B33Y40/00 ,  B41J2/17 ,  B41J29/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/165 ,  B29C64/357 ,  B29K105/00

摘要： A three-dimensional printing apparatus is disclosed has one or more troughs for receiving excess deposited particulate. Such troughs may be positioned to receive the excess deposited particulate into a particulate receiving chamber of the trough. An evacuation chamber is located at the bottom of each trough. A partition separates the evacuation chamber from the receiving chamber of the trough. The partition is selectively perforated to permit a desired amount of the particulate to flow into the evacuation chamber from the receiving chamber. The evacuation chamber is connected to a vacuum source to periodically or continuously draw ambient gas from a gas inlet to the evacuation chamber and/or from the receiving chamber through the perforations of the partition and then through the evacuation chamber toward the vacuum source to entrain an amount of the particulate and carry the entrained particulate out of the evacuation chamber.

公开(公告)号：US20180207872A1

公开(公告)日：2018-07-26

申请号：US15570395

申请日：2016-04-28

申请人： The ExOne Company

发明人： Andrew P. Klein ,  Daniel T. Brunermer ,  Michael J. McCoy ,  Anthony S. Dugan ,  Lawrence J. Voss ,  Thomas Lizzi

IPC分类号： B29C64/321 ,  B29C64/153 ,  B29C64/255 ,  B65H5/02 ,  B22F3/105

CPC分类号： B29C64/321 ,  B22F3/1055 ,  B22F2003/1056 ,  B29C64/153 ,  B29C64/205 ,  B29C64/255 ,  B33Y30/00 ,  B33Y40/00 ,  B65H5/021 ,  G03G15/224 ,  Y02P10/295

摘要： A device for applying powder layers across a substrate or atop an existing powder bed is disclosed. The device has particular utility in embodiments which are adapted for use in depositing powder layers for three-dimensional printing and as part of a three-dimensional printing apparatus. The device utilizes a conveyor belt to transfer powder from a powder reservoir and deposit it upon powder bed or other substrate. In some embodiments, the device utilizes a conveyor belt in conjunction with a powder deflector to transfer powder from a powder reservoir and deposit it upon powder bed or other substrate. In some embodiments the conveyor belt has a downwardly inclined section. In some embodiments, a downwardly inclined chute is used in conjunction with the conveyor belt.

公开(公告)号：US20160332373A1

公开(公告)日：2016-11-17

申请号：US15107537

申请日：2014-12-17

申请人： THE EXONE COMPANY

发明人： Howard A. Kuhn ,  Jason W. Plymire ,  Rick D. Lucas ,  Jesse M. Blacker ,  Daniel T. Brunermer ,  Thomas Lizzi

IPC分类号： B29C67/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y10/00

CPC分类号： B29C67/0081 ,  B29C64/165 ,  B29C64/386 ,  B29C64/40 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B33Y70/00

摘要： Methods and systems (2) are disclosed for making articles (114) by three-dimensional printing. The methods include selectively printing by jet deposition on successive layers (4) of a build material powder (10) at least one of a first binder fluid and a second binder fluid. At least one of the first and second binder fluids includes a particulate matter (16) having mean particle size diameter which is less than that of the build material powder (10). The first binder fluid is characteristically different from the second binder fluid. The particulate matter (16) selectively deposited with a binder fluid can be used to locally tailor the physical properties of the article (114), e.g. by alloying with the build material powder, increasing densification, acting as a local infiltrant or infiltrant stop during heat treatment, locally modulating the local stress fields (e.g. by a mismatch of thermal coefficients of expansion), etc. Among the possible locally tailored properties is the surface finish of an interior or exterior surface of the article (114).

摘要翻译： 公开了通过三维打印制造制品（114）的方法和系统（2）。 所述方法包括通过喷射沉积在构建材料粉末（10）的连续层（4）上选择性地印刷第一粘合剂流体和第二粘合剂流体中的至少一种。 第一和第二粘合剂流体中的至少一种包括具有小于构建材料粉末（10）的平均粒度直径的颗粒物质（16）。 第一粘合剂流体与第二粘合剂流体的特征不同。 选择性地沉积有粘合剂流体的颗粒物质（16）可以用于局部地定制物品（114）的物理性质，例如， 通过与构建材料粉末合金化，增加致密化，在热处理期间作为局部渗透剂或浸渗剂停止，局部调制局部应力场（例如通过热膨胀系数的不匹配）等。在可能的局部定制性质中 制品（114）的内表面或外表面的表面光洁度。