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    THERMAL CONTROL IN A STEREOLITHOGRAPHIC 3D PRINTER
    52.
    发明公开
    THERMAL CONTROL IN A STEREOLITHOGRAPHIC 3D PRINTER 审中-公开

    公开(公告)号：US20240326325A1

    公开(公告)日：2024-10-03

    申请号：US18738271

    申请日：2024-06-10

    Applicant: Stratasys, Inc.

    Inventor： J. Samuel Batchelder

    IPC: B29C64/124 ,  B29C64/188 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00

    CPC classification number: B29C64/124 ,  B29C64/188 ,  B29C64/20 ,  B33Y10/00 ,  B33Y30/00

    Abstract: A method for printing a 3D part in a layer-wise manner includes providing a pool of polymerizable liquid in a vessel over a build window and positioning a downward-facing build platform in the pool, thereby defining a build region above the build window. The method includes selectively curing a volume of polymerizable liquid in the build region by imparting electromagnetic radiation through the build window to form a printed layer of the part adhered to the build platform and actively cooling the build window to remove energy imparted by the electromagnetic radiation and the polymerization reaction of the polymerizable liquid such that the printed layer is between about 1° C. and about 30°° C. below an average part temperature prior to raising the print layer and printing the next layer.

    PART QUALITY MONITORING IN A STEREOLITHOGRAPHIC ADDITIVE MANUFACTURING SYSTEM
    53.
    发明公开
    PART QUALITY MONITORING IN A STEREOLITHOGRAPHIC ADDITIVE MANUFACTURING SYSTEM 审中-公开

    公开(公告)号：US20240025123A1

    公开(公告)日：2024-01-25

    申请号：US18470680

    申请日：2023-09-20

    Applicant: Stratasys, Inc.

    Inventor： J. Samuel Batchelder

    IPC: B29C64/386 ,  B33Y10/00 ,  G01N21/21 ,  B33Y50/00 ,  B29C64/129

    CPC classification number: B29C64/386 ,  B33Y10/00 ,  G01N21/211 ,  B33Y50/00 ,  B29C64/129 ,  B33Y50/02

    Abstract: A method for 3D printing a part in a layer-wise manner includes providing a pool of polymerizable liquid in a vessel over a build window and positioning a downward-facing build platform in the pool, thereby defining a build region above the build window. The method includes selectively curing a volume of polymerizable liquid in the build region by imparting electromagnetic radiation through the build window to form a printed layer of the part adhered to the build platform and scanning at least a portion of the build window with monochromatic, polarized light along a plane of incidence. The method includes measuring a change in intensity and polarity of the light to obtain information about the printed layer. The method includes raising the build platform to a height of a next layer to be printed and modifying the electromagnetic energy imparted into the next layer based upon the obtained information to print a next layer. The imparting, scanning, measuring, raising and modifying steps are repeated until the part is printed.

    Conical viscosity pump with axially positionable impeller and method of printing a 3D part
    59.
    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.

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