公开(公告)号：US20170066190A1

公开(公告)日：2017-03-09

申请号：US15252375

申请日：2016-08-31

Applicant: The ExOne Company

Inventor： Andrew P. Klein ,  Lawrence J. Voss ,  Anthony S. Dugan ,  Michael R.. Orner ,  Thomas Lizzi

IPC: B29C67/00 ,  B29C31/08

CPC classification number: B33Y10/00 ,  B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B29C64/205 ,  B33Y30/00

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10363730B2

公开(公告)日：2019-07-30

申请号：US15252375

申请日：2016-08-31

Applicant: The ExOne Company

Inventor： Andrew P. Klein ,  Lawrence J. Voss ,  Anthony S. Dugan ,  Michael R. Orner ,  Thomas Lizzi

IPC: B29C64/20 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/153 ,  B29C64/165 ,  B29C64/205

Abstract: 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.

公开(公告)号：US20180207872A1

公开(公告)日：2018-07-26

申请号：US15570395

申请日：2016-04-28

Applicant: The ExOne Company

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

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

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

Abstract: 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：US09486962B1

公开(公告)日：2016-11-08

申请号：US15161361

申请日：2016-05-23

Applicant: The ExOne Company

Inventor： Anthony S. Dugan ,  Joseph J. Bolt ,  Andrew P. Klein

IPC: B29C67/00 ,  B33Y30/00 ,  B33Y40/00

CPC classification number: B29C67/0085 ,  B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B33Y30/00 ,  B33Y40/00

Abstract: Powder-layer three-dimensional printer recoaters, which are adapted for use with fine powders, are disclosed. The recoaters comprise a controllably vibrated traveling powder dispenser having a hopper section adapted to contain the build powder, an opening through which the powder can be controllably discharged laterally into a chamber which is located beside the opening and which has a mesh covering at least a portion of its bottom. The recoaters also comprise a vibrator that is operably connected to the traveling powder dispenser and is adapted to selectively cause the powder to flow from the hopper through the opening and be discharged through the mesh. In some embodiments, the recoaters also comprise a smoothing device which is adapted to smoothen the powder dispensed through the mesh. In some embodiments the smoothing device is adapted to compact the density of the dispensed powder level a selectable amount. Also disclosed are powder-layer three-dimensional printers having such recoaters.

Abstract translation: 公开了适用于细粉末的粉末三维打印机重涂器。 重涂器包括可控地振动的行进粉末分配器，其具有适于容纳构建粉末的料斗部分，开口，粉末可以通过该开口被可控地排放到位于开口旁边的室中，并且其具有覆盖至少一部分的网 的底部。 重涂器还包括可操作地连接到行进的粉末分配器的振动器，并且适于选择性地使粉末从料斗流过开口并通过网格排出。 在一些实施例中，重涂器还包括平滑装置，其适于平滑通过网状物分配的粉末。 在一些实施例中，平滑装置适于将分配的粉末水平的密度压缩成可选择的量。 还公开了具有这种重涂器的粉末层三维打印机。