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1. 发明授权

US10363730B2 Selectively activated mesh discharge powder recoater for three-dimensional printing 有权
公开(公告)号：US10363730B2
公开(公告)日：2019-07-30
申请号：US15252375
申请日：2016-08-31
申请人： The ExOne Company
发明人： Andrew P. Klein , Lawrence J. Voss , Anthony S. Dugan , Michael R. Orner , Thomas Lizzi
IPC分类号： B29C64/20 , B33Y10/00 , B33Y30/00 , B29C64/153 , B29C64/165 , B29C64/205
摘要： Recoaters are described which are adapted for use in powder-layer three-dimensional printers. The recoaters comprise a mesh discharge device that is adapted to be selectively activated by the application of an agitation, e.g. a vibration. Such mesh discharge devices include a planar mesh, i.e. a screen or sieve, which is adapted to support a quantity of powder when the quantity of powder and the mesh are static and to dispense at least a portion of the quantity of powder when at least one of the quantity of powder and the mesh is agitated. Preferably, the mesh is disposed substantially horizontally, but may be disposed at an angle to the horizontal. Also described are powder-layer three-dimensional printers comprising such recoaters. In some embodiments, the powder-layer three-dimensional printers are adapted to space the mesh no more than about two to ten powder layer thicknesses from the top surface of the powder bed or substrate upon which a powder layer is to be deposited.

2. 发明申请

US20170120329A1 Process for Making Nickel-Based Superalloy Articles by Three-Dimensional Printing 审中-公开
公开(公告)号：US20170120329A1
公开(公告)日：2017-05-04
申请号：US15314120
申请日：2015-05-26
申请人： The ExOne Company
发明人： Michael J. Orange , Howard A. Kuhn , Paul P. Knor , Thomas Lizzi
IPC分类号： B22F3/10 , B33Y10/00 , F01D5/28 , B22F9/08 , B22F5/04 , B33Y80/00 , B33Y70/00
CPC分类号： B22F3/1035 , B22F3/008 , B22F3/1017 , B22F5/04 , B22F9/082 , B22F2009/0828 , B22F2301/15 , B22F2304/10 , B22F2998/10 , B22F2999/00 , B33Y10/00 , B33Y70/00 , B33Y80/00 , C22C1/0433 , F01D5/28 , F05D2230/22 , F05D2300/175 , F05D2300/177
摘要： Methods are presented for making sintered articles from water-atomized nickel-based superalloy powders. Three-dimensional binder jet printing is used to make a printed article from the powder. The printed article is liquid phase sintered without slumping at a temperature at which at least fifteen volume percent of the powder is liquid during sintering.

3. 发明申请

US20160325495A1 Methods and Systems for Three-Dimensional Printing Utilizing a Jetted-Particle Binder Fluid 审中-公开
标题翻译：使用喷射颗粒粘结剂流体进行三维打印的方法和系统
公开(公告)号：US20160325495A1
公开(公告)日：2016-11-10
申请号：US15107528
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 Blacker , Daniel T. Brunermer , Thomas Lizzi
IPC分类号： B29C67/00 , B33Y30/00 , B33Y50/02 , B33Y10/00
CPC分类号： B29C64/165 , B28B1/001 , B29K2105/16 , B33Y10/00 , B33Y70/00 , C04B35/52 , C04B35/522 , C04B35/622 , C04B35/6263 , C04B2235/5427 , C04B2235/5436 , C04B2235/5472 , C04B2235/6026
摘要： Methods and systems (20) are disclosed for making articles by three-dimensional printing. The methods include three-dimensionally printing articles by selectively jet-depositing a particle-bearing binder fluid (14) upon successive layers (4) of a build material powder (10) such that the particles (16) deposited with the binder fluid (14) increase the apparent density of the as-printed article. The particulate matter (16) of the binder fluid (12) is smaller than the mean particle size of the build material powder (10). Preferably, this jet-deposited particulate matter (16) has a mean particle size that is larger than about 1 to and smaller than or equal to 50 microns. The jet-deposited matter (16) acts to fill in the interparticle interstices of the build material powder (10) thereby simultaneously increasing the density of the printed article and improving its surface roughness and contour resolution, which in turn, improves the surface finish of the final article. The systems (20) include binder fluid handling systems (26) which are adapted to jet a binder fluid (14) containing such particulate matter (16).
摘要翻译：公开了用于通过三维打印制造制品的方法和系统（20）。所述方法包括通过在构建材料粉末（10）的连续层（4）上选择性地喷射沉积含颗粒的粘结剂流体（14）使得沉积有粘合剂流体（14）的颗粒（16））增加印刷品的表观密度。粘合剂流体（12）的颗粒物质（16）小于构成材料粉末（10）的平均粒度。优选地，该喷射沉积颗粒物质（16）具有大于约1至小于或等于50微米的平均粒度。喷射沉积物（16）用于填充构成材料粉末（10）的颗粒间隙，从而同时增加印刷制品的密度并提高其表面粗糙度和轮廓分辨率，这又提高了表面光洁度最后的文章。系统（20）包括粘合剂流体处理系统（26），其适于喷射含有这种颗粒物质（16）的粘合剂流体（14）。

4. 发明授权

US11691335B2 Powder distribution system for three-dimensional printer 有权
公开(公告)号：US11691335B2
公开(公告)日：2023-07-04
申请号：US16684065
申请日：2019-11-14
申请人： The ExOne Company
发明人： Jake Flick , Michael John McCoy , Joseph J. Bolt , Alec Hydock , Travis Maxwell Inks , Anthony S Dugan , Thomas Lizzi
IPC分类号： B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B29C64/329 , B29C64/255 , B29C64/209 , B29C64/35 , B29C64/205 , B07B1/40 , B22F12/52 , B22F12/67 , B22F10/14 , B22F10/28 , B22F12/90
CPC分类号： B29C64/153 , B07B1/40 , B22F12/52 , B22F12/67 , B29C64/205 , B29C64/209 , B29C64/255 , B29C64/329 , B29C64/35 , B33Y10/00 , B33Y30/00 , B33Y40/00 , B22F10/14 , B22F10/28 , B22F12/90 , B22F2999/00 , B22F10/28 , B22F10/14 , B22F2999/00 , B22F12/52 , B22F12/67 , B22F3/004 , B22F2202/01
摘要： The present invention relates to powder-layer three-dimensional printers (2) having a discrete supply hopper (340) and a recoater (20). The discrete supply hopper (340) is configured to transfer a build powder to the recoater (20) in a manner that enhances the uniformity of build powder layers that are dispensed from the recoater (20). In some embodiments, at least one of the discrete supply hopper and the powder hopper of the recoater is adapted to selectively contact the other, seal against the other, and/or have one partially inserted inside the other so as to diminish or prevent powder pluming during the transfer of build powder from the discrete supply hopper to the recoater.

5. 发明申请

US20170252973A1 Methods for Controlling Warpage of Cavities of Three-Dimensionally Printed Articles During Heat Treament 审中-公开
公开(公告)号：US20170252973A1
公开(公告)日：2017-09-07
申请号：US15517837
申请日：2015-10-15
申请人： The ExOne Company
发明人： Richard D. Clark , Douglas P. Tuk , Thomas G. Pasterik , Brandon Cary , Thomas Lizzi
IPC分类号： B29C67/00 , B22F3/105 , B22F3/00 , B22F5/10 , B28B1/00
CPC分类号： B22F3/1055 , B22F3/008 , B22F5/10 , B22F5/106 , B28B1/001 , B29C64/00 , B29C64/153 , B33Y10/00 , B33Y40/00 , B33Y50/02 , B33Y70/00 , B33Y80/00
摘要： Methods are presented for controlling warpage during heat treatment of a 3DPBJ article having a cavity extending inwardly from an outside surface wherein a 3DPBJ article is 3DPBJ printed from a build powder as is a 3DPBJ object which is adap ted to be contactingly insertable into the cavity of the 3DP BJ article. At least a portion of the 3DPBJ article cavity surface and/or at least a portion of the surface of the 3DPBJ object is treated to prevent the 3DPBJ object from becoming bonded to the 3DPBJ article during the heat treatment. The 3DPBJ object is inserted into the 3DPBJ article cavity and the 3DPBJ article and the 3DPBJ object are heat treated to transform the 3DPBJ article into the intended article itself and the 3DPBJ object into a heat treated 3DPBJ object. The heat treated 3DPBJ object is removed from the article.

6. 发明申请

US20170066190A1 Selectively Activated Mesh Discharge Powder Recoater for Three-Dimensional Printing 审中-公开
标题翻译：选择性活性网格放电粉末回收机三维打印
公开(公告)号：US20170066190A1
公开(公告)日：2017-03-09
申请号：US15252375
申请日：2016-08-31
申请人： The ExOne Company
发明人： Andrew P. Klein , Lawrence J. Voss , Anthony S. Dugan , Michael R.. Orner , Thomas Lizzi
IPC分类号： B29C67/00 , B29C31/08
CPC分类号： B33Y10/00 , B29C64/153 , B29C64/165 , B29C64/20 , B29C64/205 , B33Y30/00
摘要： Recoaters are described which are adapted for use in powder-layer three-dimensional printers. The recoaters comprise a mesh discharge device that is adapted to be selectively activated by the application of an agitation, e.g. a vibration. Such mesh discharge devices include a planar mesh, i.e. a screen or sieve, which is adapted to support a quantity of powder when the quantity of powder and the mesh are static and to dispense at least a portion of the quantity of powder when at least one of the quantity of powder and the mesh is agitated. Preferably, the mesh is disposed substantially horizontally, but may be disposed at an angle to the horizontal. Also described are powder-layer three-dimensional printers comprising such recoaters. In some embodiments, the powder-layer three-dimensional printers are adapted to space the mesh no more than about two to ten powder layer thicknesses from the top surface of the powder bed or substrate upon which a powder layer is to be deposited.
摘要翻译：描述了适用于粉末层三维打印机的回收器。重涂器包括筛网排放装置，其适于通过施加搅动而被选择性地活化。振动。这种筛网排放装置包括平面网，即筛网或筛子，其适于在粉末和筛网的数量为静态时支撑一定数量的粉末，并且当至少一个的粉末和网状物的搅拌。优选地，网格基本上水平设置，但是可以以与水平方向成一定角度设置。还描述了包括这种重涂器的粉末层三维打印机。在一些实施例中，粉末层三维打印机适于从要沉积粉末层的粉末床或基底的顶表面将网格间隔不超过约二至十个粉末层厚度。

7. 发明申请

US20200147884A1 Powder Distribution System for Three-Dimensional Printer 审中-公开
公开(公告)号：US20200147884A1
公开(公告)日：2020-05-14
申请号：US16684065
申请日：2019-11-14
申请人： The ExOne Company
发明人： Jake Flick , Michael John McCoy , Joseph J. Bolt , Alec Hydock , Travis Maxwell Inks , Anthony S Dugan , Thomas Lizzi
IPC分类号： B29C64/329 , B22F3/00 , B33Y40/00 , B29C64/255 , B33Y30/00 , B29C64/209 , B33Y10/00 , B29C64/35 , B29C64/153
摘要： The present invention relates to powder-layer three-dimensional printers (2) having a discrete supply hopper (340) and a recoater (20). The discrete supply hopper (340) is configured to transfer a build powder to the recoater (20) in a manner that enhances the uniformity of build powder layers that are dispensed from the recoater (20). In some embodiments, at least one of the discrete supply hopper and the powder hopper of the recoater is adapted to selectively contact the other, seal against the other, and/or have one partially inserted inside the other so as to diminish or prevent powder pluming during the transfer of build powder from the discrete supply hopper to the recoater.

8. 发明申请

US20170120536A1 Three-Dimensional Printing Excess Deposited Particulate Handling 审中-公开
公开(公告)号：US20170120536A1
公开(公告)日：2017-05-04
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 , B33Y30/00
CPC分类号： B33Y40/00 , B29C64/153 , B29C64/165 , B29C64/357 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B41J2/1714 , B41J29/02
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.

9. 发明授权

US10144207B2 Three-dimensional printing excess deposited particulate handling 有权
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.

10. 发明申请

US20180207872A1 Powder Recoater for Three-Dimensional Printer 审中-公开
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.

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