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    Powder-layer three-dimensional printer with smoothing device
    2.
    发明授权
    Powder-layer three-dimensional printer with smoothing device 有权

    公开(公告)号：US10759115B2

    公开(公告)日：2020-09-01

    申请号：US16567136

    申请日：2019-09-11

    申请人： The ExOne Company

    发明人： Adam W. Stroud ,  Rick D. Lucas ,  Michael John McCoy ,  Anthony S. Dugan ,  Joseph J. Bolt

    IPC分类号： B29C64/218 ,  B29C64/329

    摘要： Powder layer smoothing devices (34) adapted for use with powder-layer three-dimensional printers (10) are described. The smoothing devices (34) include a counter rotating roller (36, 50, 60) having a complex powder engaging face (38) that may include a series or plurality of flutes (54) or may include knurling (64) extending along at least a portion of the counter rotating roller (36, 50, 60) along its rotational axis (56, 66). The smoothing device (34) may also include a vertically adjustable finishing roller (35) to follow the counter rotating roller (36, 50, 60) across the build box (12) of the powder-layer three-dimensional printer (10).

    Powder-Layer Three-Dimensional Printer with Smoothing Device
    3.
    发明申请
    Powder-Layer Three-Dimensional Printer with Smoothing Device 审中-公开

    公开(公告)号：US20200001530A1

    公开(公告)日：2020-01-02

    申请号：US16567136

    申请日：2019-09-11

    申请人： The ExOne Company

    发明人： Adam W. Stroud ,  Rick D. Lucas ,  Michael John McCoy ,  Anthony S. Dugan ,  Joseph J. Bolt

    IPC分类号： B29C64/218

    摘要： Powder layer smoothing devices (34) adapted for use with powder-layer three-dimensional printers (10) are described. The smoothing devices (34) include a counter rotating roller (36, 50, 60) having a complex powder engaging face (38) that may include a series or plurality of flutes (54) or may include knurling (64) extending along at least a portion of the counter rotating roller (36, 50, 60) along its rotational axis (56, 66). The smoothing device (34) may also include a vertically adjustable finishing roller (35) to follow the counter rotating roller (36, 50, 60) across the build box (12) of the powder-layer three-dimensional printer (10).

    Fine powder recoater for three-dimensional printer
    5.
    发明授权
    Fine powder recoater for three-dimensional printer 有权
    三维打印机精细粉​​碎机

    公开(公告)号：US09486962B1

    公开(公告)日：2016-11-08

    申请号：US15161361

    申请日：2016-05-23

    申请人： The ExOne Company

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

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

    CPC分类号： B29C67/0085 ,  B29C64/153 ,  B29C64/165 ,  B29C64/20 ,  B33Y30/00 ,  B33Y40/00

    摘要： 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.

    摘要翻译： 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。

    Improved Powder Distribution System for Three-Dimensional Printer
    7.
    发明申请
    Improved Powder Distribution System for Three-Dimensional Printer 审中-公开

    公开(公告)号：US20200180227A1

    公开(公告)日：2020-06-11

    申请号：US16620696

    申请日：2018-06-12

    申请人： The ExOne Company

    发明人： Lawrence Joseph Voss ,  Joseph J. Bolt ,  Anthony S. Dugan ,  Michael John McCoy ,  Daniel T. Brunermer ,  Travis Maxwell Inks ,  Paul P. Knor

    IPC分类号： B29C64/329 ,  B29C64/205 ,  B07B1/40

    摘要： The present invention relates to apparatuses for distributing build powder in powder-layer three-dimensional printers (2) and for the collection of particulates of the build powder that have become suspended in the gaseous atmosphere in the vicinity of the build platform of the three-dimensional printer. These apparatuses include recoaters (20) that are particularly useful in providing uniform distribution of fine build powder across the width of the build platform or powder bed. The present invention also includes powder-layer three-dimensional printers (2) which comprise such apparatuses for distributing build powder and/or apparatuses for collecting such suspended particulates. The improved fine powder recoater (20) uses an ultrasonic transducer (30) to move powder through a sheet screen (28). The sheet screen (28) may be presented to the powder fed onto it in a narrow dispensing slot to limit the flow rate of powder from the dispenser and to provide control over the amount of powder dispensed. The width of the slot may extend to cover the entire build box fill zone. The ultrasonic transducer (30) is preferably adapted to periodically sweep through a range of frequencies during operation. The ultrasonic vibration system may be augmented with a low frequency vibration system. The dust collection system (160) draws air from the perimeter of the build box (172) down through the deck plate (170) of the printer (2) and out of the printer's housing (164) to an external dust collector (250).