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    Conical viscosity pump with axially positionable impeller and method of printing a 3D part
    4.
    发明授权
    Conical viscosity pump with axially positionable impeller and method of printing a 3D part 审中-公开

    公开(公告)号：US10670019B2

    公开(公告)日：2020-06-02

    申请号：US15337503

    申请日：2016-10-28

    Applicant: Stratasys, Inc.

    Inventor： Robert L. Zinniel ,  J. Samuel Batchelder

    IPC: F04D3/02 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C48/285 ,  B29C64/20 ,  B29C64/386 ,  B29C64/106 ,  B22F3/00 ,  B29C48/395 ,  B29C48/02

    Abstract: A pump assembly for use in an additive manufacturing system includes a viscosity pump having a first end and a second end wherein the first end has a cross sectional area greater than a cross sectional area of the second end. The viscosity pump has a conical shaped inner surface defining a pump chamber, an inlet proximate the first end and an outlet proximate the second end. The viscosity pump includes an impeller having an axis of rotation, where the impeller has a shaft positioned through the first end of the first housing and into the pump chamber. The impeller includes a distal tip-end at a distal end of the shaft wherein the impeller is configured to be axially displaced within the pump chamber of the viscosity pump parallel to the axis of rotation. An actuator is coupled to a proximal end of the impeller, wherein the actuator is configured to move the impeller parallel to the axis of rotation.

    SYSTEM AND METHOD FOR 3D PRINTING WITH METAL FILAMENT MATERIALS
    5.
    发明申请
    SYSTEM AND METHOD FOR 3D PRINTING WITH METAL FILAMENT MATERIALS 有权

    公开(公告)号：US20210354368A1

    公开(公告)日：2021-11-18

    申请号：US17443597

    申请日：2021-07-27

    Applicant: Stratasys, Inc.

    Inventor： Robert L. Zinniel ,  S. Scott Crump ,  Dominic F. Mannella

    IPC: B29C64/118 ,  B29C64/124 ,  B29C64/40 ,  B33Y30/00 ,  B29C64/295 ,  B21C33/02 ,  B33Y10/00 ,  B29C48/92 ,  B29C64/20

    Abstract: An additive manufacturing system configured to a 3D print using a metal wire material includes a drive mechanism configured to feed the metal feedstock into an inlet tube and a liquefier. The liquefier has a chamber configured to accept the metal feedstock from the inlet tube. The metal feed stock is heated in the chamber such that a melt pool is formed in the chamber. The liquefier has an extrusion tube in fluid communication with the chamber, the extrusion tube having a length (L) and a diameter (D) wherein the ratio of length to diameter (L/D) ranges from about 4:1 to about 20:1. The system has a platen with a surface configured to accept melted material from the liquefier, wherein the platen and the liquefier move in at least three dimensions relative to each other. The system includes a regulated source of pressurized inert gas flowably coupled to the liquefier and configured to place a controlled positive pressure onto the melt pool sufficient to overcome the resistance of the extrusion tube such that a part may be formed by the extrusion of the liquidus metal along toolpaths defined by the relative motion of the liquefier and the platen.

    MAGNETICALLY THROTTLED LIQUEFIER ASSEMBLY
    7.
    发明申请
    MAGNETICALLY THROTTLED LIQUEFIER ASSEMBLY 审中-公开

    公开(公告)号：US20190015884A1

    公开(公告)日：2019-01-17

    申请号：US16132614

    申请日：2018-09-17

    Applicant: Stratasys, Inc.

    Inventor： J. Samuel Batchelder ,  Robert L. Zinniel

    IPC: B21C23/00 ,  B33Y30/00

    Abstract: A magnetically throttled liquefier assembly for use in an additive manufacturing system and configured to heat a metal-based alloy to an extrudable state includes an array of magnets to generate a magnetic field in order to induce a viscosity in the heated metal-based alloy and to control the flow rate of the heated metal-based alloy through the liquefier for extrusion and the building of a three-dimensional object with the metal-based alloy.

    MAGNETICALLY THROTTLED LIQUEFIER ASSEMBLY
    8.
    发明申请
    MAGNETICALLY THROTTLED LIQUEFIER ASSEMBLY 审中-公开
    磁力液化石油气总成

    公开(公告)号：US20160361763A1

    公开(公告)日：2016-12-15

    申请号：US14739877

    申请日：2015-06-15

    Applicant: Stratasys, Inc.

    Inventor： J. Samuel Batchelder ,  Robert L. Zinniel

    IPC: B22D27/02

    CPC classification number: B21C23/00 ,  B22F3/008 ,  B22F3/115 ,  B22F2999/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C22C21/00 ,  B22F3/003 ,  B22F2009/0892 ,  B22F2202/07

    Abstract: A magnetically throttled liquefier assembly for use in an additive manufacturing system and configured to heat a metal-based alloy to an extrudable state includes an array of magnets to generate a magnetic field in order to induce a viscosity in the heated metal-based alloy and to control the flow rate of the heated metal-based alloy through the liquefier for extrusion and the building of a three-dimensional object with the metal-based alloy.

    Abstract translation: 一种用于添加剂制造系统并被配置为将金属基合金加热至可挤出状态的磁性节流液化器组件包括产生磁场的磁体阵列，以便在加热的金属基合金中引起粘度， 通过用于挤出的液化器控制加热的金属基合金的流速，并利用金属基合金来建立三维物体。

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