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1. 发明授权

US10061284B2 Three-dimensional printing using fast STL file conversion 有权
公开(公告)号：US10061284B2
公开(公告)日：2018-08-28
申请号：US15126724
申请日：2015-03-19
申请人： The ExOne Company
发明人： Daniel T. Brunermer , Patrick Stack , Lawrence Joseph Voss
IPC分类号： G05B19/042 , G06T19/00 , B33Y50/00 , B33Y50/02 , B29C64/165 , B29C64/386
摘要： Methods are provided for solid free-form fabrication of an article without using a slice stack file quickly and efficiently—in terms of computational resources—converting STL files representing an article or articles to be built by SFFF without the use of a conventional slicing program. An application program interface (“API”) is used to generate a bitmap corresponding to each particular layer of the article that is to be printed directly from the article's STL file. This conversion may done essentially in real time immediately before the particular layer is to be printed. The bitmap is used in configuring the printing instructions for the SFFF printing mechanism to print that particular layer.

2. 发明授权

US10040216B2 Powder particle layerwise three-dimensional printing process 有权
公开(公告)号：US10040216B2
公开(公告)日：2018-08-07
申请号：US14025343
申请日：2013-09-12
申请人： The ExOne Company
发明人： John A. Bai , Kevin D. Creehan , Howard A. Kuhn
IPC分类号： B28B1/00 , B29C67/00 , B33Y10/00 , B33Y30/00 , C04B35/01 , C04B35/053 , C04B35/111 , C04B35/14 , C04B35/26 , C04B35/453 , C04B35/457 , C04B35/46 , C04B35/486 , C04B35/505 , C04B35/528 , C04B35/56 , C04B35/565 , C04B35/581 , C04B35/584 , C04B35/632 , C04B35/634 , B22F3/00 , B29C64/165 , B29K105/00 , B29K31/00 , B29K303/04 , B29K303/06 , B22F1/00
CPC分类号： B28B1/001 , B22F1/0018 , B22F3/008 , B22F2998/10 , B29C64/165 , B29K2031/04 , B29K2039/06 , B29K2105/0005 , B29K2105/251 , B29K2303/04 , B29K2303/06 , B33Y10/00 , B33Y30/00 , C04B35/01 , C04B35/053 , C04B35/111 , C04B35/14 , C04B35/26 , C04B35/453 , C04B35/457 , C04B35/46 , C04B35/486 , C04B35/505 , C04B35/528 , C04B35/5626 , C04B35/565 , C04B35/581 , C04B35/584 , C04B35/632 , C04B35/634 , C04B2235/6026 , B22F3/1017
摘要： Three-dimensional printing processes are disclosed which utilize printable fluids comprising a carrier fluid, a polymeric binder, and nanoparticles. The three-dimensional printing processes are useful for making articles from a build material powder, e.g., a ceramic, metal, metal alloy, or intermetallic powder. The nanoparticles enable low temperature interparticle bonding of the build material powder particles, e.g., by forming bridging bonds between adjacent powder particles, and/or increasing the interparticle friction between the build material powder particles to enhance the structural strength of the as-built article during a thermal treatment over at least a part of the temperature range which has as its low end the temperature at which the structural strength due to the binder becomes insubstantial and as its high end the temperature at which the structural strength due to interparticle sintering of the build material powder becomes substantial, i.e., the article's debile temperature range. Green density improvements are achievable.

3. 发明申请

US20150069649A1 Powder Particle Layerwise Three-Dimensional Printing Process 有权
标题翻译：粉末颗粒层状三维印刷工艺
公开(公告)号：US20150069649A1
公开(公告)日：2015-03-12
申请号：US14025343
申请日：2013-09-12
申请人： The ExOne Company
发明人： John A. Bai , Kevin D. Creehan , Howard A. Kuhn
IPC分类号： B28B1/00 , B29C67/00
CPC分类号： B28B1/001 , B22F1/0018 , B22F3/008 , B22F2998/10 , B29C64/165 , B29K2031/04 , B29K2039/06 , B29K2105/0005 , B29K2105/251 , B29K2303/04 , B29K2303/06 , B33Y10/00 , B33Y30/00 , C04B35/01 , C04B35/053 , C04B35/111 , C04B35/14 , C04B35/26 , C04B35/453 , C04B35/457 , C04B35/46 , C04B35/486 , C04B35/505 , C04B35/528 , C04B35/5626 , C04B35/565 , C04B35/581 , C04B35/584 , C04B35/632 , C04B35/634 , C04B2235/6026 , B22F3/1017
摘要： Three-dimensional printing processes are disclosed which utilize printable fluids comprising a carrier fluid, a polymeric binder, and nanoparticles. The three-dimensional printing processes are useful for making articles from a build material powder, e.g., a ceramic, metal, metal alloy, or intermetallic powder. The nanoparticles enable low temperature interparticle bonding of the build material powder particles, e.g., by forming bridging bonds between adjacent powder particles, and/or increasing the interparticle friction between the build material powder particles to enhance the structural strength of the as-built article during a thermal treatment over at least a part of the temperature range which has as its low end the temperature at which the structural strength due to the binder becomes insubstantial and as its high end the temperature at which the structural strength due to interparticle sintering of the build material powder becomes substantial, i.e., the article's debile temperature range. Green density improvements are achievable.
摘要翻译：公开了利用包含载体流体，聚合物粘合剂和纳米颗粒的可印刷流体的三维印刷方法。三维印刷方法可用于从建筑材料粉末制造制品，例如陶瓷，金属，金属合金或金属间金属粉末。纳米颗粒使得构建材料粉末颗粒的低温颗粒间粘合，例如通过在相邻的粉末颗粒之间形成桥接键和/或增加构建材料粉末颗粒之间的颗粒间摩擦，以增强构建的制品的结构强度在至少一部分温度范围内进行热处理，该温度范围的低端是由于粘合剂引起的结构强度变得不实际的温度，并且由于其高端，由于构件的颗粒间烧结而引起的结构强度的温度材料粉末变得很大，即物品的不良温度范围。可实现绿色密度改进。

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

US20200216363A1 INDIRECT ADDITIVE MANUFACTURING PROCESS USING AMINE-CONTAINING ADHESIVE POLYMERS 审中-公开
公开(公告)号：US20200216363A1
公开(公告)日：2020-07-09
申请号：US16243507
申请日：2019-01-09
申请人： UT-Battelle, LLC , The ExOne Company
发明人： Tomonori Saito , Amy M. Elliott , Daniel T. Brunermer , Dustin Blake Gilmer , Michelle Lehmann , Huayun Yu
IPC分类号： C04B35/634 , B22F3/105 , B22F3/10 , B22F1/00 , C04B35/64 , C04B35/14
摘要： A method for binder jetting additive manufacturing of an object, the method comprising: (i) separately feeding a powder from which said object is to be manufactured and a solution comprising an adhesive polymer dissolved in a solvent into an additive manufacturing device, wherein said adhesive polymer is an amine-containing polymer having a molecular weight of at least 200 g/mole and is present in said solution in a concentration of 1-30 wt % to result in said solution having a viscosity of 2-25 mPa·s and a surface tension of 25-45 mN/m at room temperature; and (ii) dispensing selectively positioned droplets of said adhesive polymer, from a printhead of said additive manufacturing device, into a bed of said powder to bind particles of said powder with said adhesive polymer to produce a preform having a shape of the object to be manufactured.

6. 发明申请

US20200017699A1 Low Residual Carbon Binder for Binder Jetting Three-Dimensional Printing and Methods for Use of Same 审中-公开
公开(公告)号：US20200017699A1
公开(公告)日：2020-01-16
申请号：US16469365
申请日：2017-12-12
申请人： The ExOne Company
发明人： Daniel T. Brunermer
IPC分类号： C09D11/106 , B29C64/165 , B33Y10/00 , B33Y70/00
摘要： The present invention overcomes the problem with carbon increase described above by providing a binder for binder jetting three-dimensional printing that results in a much lower carbon increase after post-processing. The present invention also includes making articles by binder jetting three-dimensional printing using such inventive binders.

7. 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.

8. 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。

9. 发明申请

US20160052054A1 Apparatus for Three-Dimensionally Printing Reactive Materials 审中-公开
标题翻译：三维印刷反应材料的设备
公开(公告)号：US20160052054A1
公开(公告)日：2016-02-25
申请号：US14829757
申请日：2015-08-19
申请人： The ExOne Company
发明人： Michael J. Orange , RIck D. Lucas , Kimberly E. Kanzler , Travis Maxwell Inks
IPC分类号： B22F3/10 , B22F3/00
CPC分类号： B33Y30/00 , B22F3/003 , B22F3/008 , B22F2999/00 , B29C64/165 , B29C64/20 , B22F2201/00
摘要： Apparatuses are disclosed for three-dimensionally printing reactive materials which utilize a powder spreading step followed by a binder-jet deposition step. Some such apparatuses include a binder jet three-dimensional printing device, a curing device, and a depowdering device contained within an environmental enclosure which provides an inert atmosphere sufficient to allow a reactive material to be used as a build material without fire or explosion hazards. Some such apparatuses include one or more conveying systems for moving a removable build box among the various devices. Environmental enclosures having unique designs and features are disclosed.
摘要翻译：公开了用于三维打印反应性材料的装置，其利用粉末扩散步骤，随后进行粘合剂 - 喷射沉积步骤。一些这样的设备包括粘合剂喷射三维打印装置，固化装置和包含在环境外壳内的沉积装置，其提供足够的惰性气氛，以使反应性材料用作构建材料而没有火灾或爆炸危险。一些这样的设备包括用于在各种设备之间移动可移动构建箱的一个或多个输送系统。公开了具有独特设计和特征的环境外壳。

10. 发明申请

US20210114289A1 Oscillating Smoothing Device For A Three-Dimensional Printer 有权
公开(公告)号：US20210114289A1
公开(公告)日：2021-04-22
申请号：US15929919
申请日：2020-05-29
申请人： The ExOne Company
发明人： Adam W. Stroud , Lucas W. Phalen
IPC分类号： B29C64/153 , B29C64/245 , B29C64/188 , B29C64/209 , B29C64/236 , B29C64/232
摘要： A powder layer smoothing devices adapted for use with powder-layer three-dimensional printers are described. The smoothing devices include an oscillating smoothing device that includes a leading edge adapted to cut, remove, and redistribute excess powder in a powder layer. A leveling sled follows the leading edge to trowel and compact the powder in the powder layer.

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