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1. 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。

2. 发明授权

US10759115B2 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).

3. 发明申请

US20200001530A1 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).

4. 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.

5. 发明授权

US09446448B2 Recoaters for powder-layer three-dimensional printers 有权
标题翻译：粉末层三维打印机的回收机
公开(公告)号：US09446448B2
公开(公告)日：2016-09-20
申请号：US14945884
申请日：2015-11-19
申请人： The ExOne Company
发明人： Michael John McCoy , Anthony S. Dugan
IPC分类号： B29C67/00 , B22F3/105 , B33Y30/00
CPC分类号： B22F3/1055 , B22F2003/1056 , B29C64/153 , B29C64/165 , B29C64/20 , B33Y30/00 , Y02P10/295
摘要： Recoaters for powder-layer three-dimensional printers which are capable of producing enhanced powder layer uniformity and powder-layer three-dimensional printers having such recoaters are described. The recoater comprises a bridge, two supports, one at either end of the bridge, a powder reservoir, and a substantially rectangular plate which extends between the two supports and contains an opening through which the powder reservoir either extends into or through or through which build powder can be fed into the powder reservoir. The plate has a length to minimum width ratio of no more than about 7.0 and a length to maximum width ratio of no more than about 5.0, the plate being adapted to brace the bridge into a perpendicular relationship with the first and second supports when the recoater is being controllably moved and the powder reservoir is dispensing powder to form a powder layer.
摘要翻译：描述了能够产生增强的粉末层均匀性的粉末层三维打印机的回收器和具有这种重涂器的粉末层三维打印机。重涂器包括桥，两个支撑件，一个在桥的两端，一个粉末储存器和一个基本上矩形的板，其在两个支撑件之间延伸并且包含一个开口，粉末储存器通过该开口延伸进入或穿过该构件粉末可以进料到粉末储存器中。该板具有不大于约7.0的长度与最小宽度比，长度与最大宽度之比不大于约5.0，当该重新涂覆时，该板适于将该桥与第一和第二支撑件垂直关系可控地移动并且粉末储存器分配粉末以形成粉末层。

6. 发明授权

US11691334B2 Powder distribution system for three-dimensional printer 有权
公开(公告)号：US11691334B2
公开(公告)日：2023-07-04
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： B29C64/153 , 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 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).

7. 发明申请

US20200180227A1 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).

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

US10449718B1 Powder-layer three-dimensional printer with smoothing device 有权
公开(公告)号：US10449718B1
公开(公告)日：2019-10-22
申请号：US16151569
申请日：2018-10-04
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： B29C64/214 , B29C64/153 , B33Y30/00 , B29C64/218 , B29C64/329
摘要： A powder layer smoothing devices adapted for use with powder-layer three-dimensional printers are described. The smoothing devices include a counter rotating roller having a complex powder engaging face that may include a series or plurality of flutes or may include knurling extending along at least a portion of the roller along the rotational axis. The smoothing device may also include a vertically adjustable finishing roller to follow the counter rotating roller across the build box of the powder-layer three-dimensional printer.

10. 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.

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