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    Filament heating in 3D printing systems
    2.
    发明授权
    Filament heating in 3D printing systems 有权

    公开(公告)号：US10195786B1

    公开(公告)日：2019-02-05

    申请号：US15827711

    申请日：2017-11-30

    申请人： Arevo, Inc.

    发明人： Armando Armijo ,  Chandrashekar Mantha

    IPC分类号： B33Y50/00 ,  B33Y10/00 ,  B29C64/118 ,  B29C64/321 ,  D02J13/00

    摘要： A method of heating thermoplastic filament in additive manufacturing systems, such as 3D printing systems. In accordance with the illustrative embodiment of the present invention, the temporal rate dE dt at which heat dE is added to a portion of a segment of filament is a function of the temporal rate d ⁢ ⁢ m dt at which the mass dm of the portion of the segment of filament is deposited. In particular, the temporal rate dE dt at which heat dE is added to a portion of a segment of filament is a non-linear function of the temporal rate d ⁢ ⁢ m dt .

    Quick-change fused filament fabrication nozzle assembly
    4.
    发明授权
    Quick-change fused filament fabrication nozzle assembly 有权

    公开(公告)号：US10780621B2

    公开(公告)日：2020-09-22

    申请号：US16001013

    申请日：2018-06-06

    申请人： AREVO, INC.

    发明人： Armando Armijo

    IPC分类号： B29C64/118 ,  B29C64/209 ,  B29C48/25 ,  B29C48/05 ,  B29L31/00 ,  B33Y30/00 ,  B29C48/86

    摘要： The present invention provides a system and method for quickly removing and installing a filament tube and nozzle in an FFF extrusion system. The system utilizes a primary manifold that includes a cooling block, a heating block and a quick-change mechanism. This primary manifold is adapted to mate a filament tube/nozzle assembly. The quick-change mechanism, which in a particular embodiment utilizes a recessed biased-bearing arrangement, enables the filament/nozzle assembly to be removed and inserted without the use of any tools, and without causing any significant downtime for the FFF extrusion system. Once removed, the filament tube/nozzle assembly can be refurbished by a technician, trained so as not to over torque the tube/nozzle threaded interface. This refurbishment (typically consisting of a cleaning and the installation of a new nozzle) could be accomplished “off-line”, without any impact on the continued use of FFF extrusion system.

    QUICK-CHANGE FUSED FILAMENT FABRICATION NOZZLE ASSEMBLY
    7.
    发明申请
    QUICK-CHANGE FUSED FILAMENT FABRICATION NOZZLE ASSEMBLY 审中-公开

    公开(公告)号：US20190375141A1

    公开(公告)日：2019-12-12

    申请号：US16001013

    申请日：2018-06-06

    申请人： AREVO, INC.

    发明人： Armando Armijo

    IPC分类号： B29C47/08 ,  B29C64/209 ,  B29C64/118 ,  B29C47/00

    摘要： The present invention provides a system and method for quickly removing and installing a filament tube and nozzle in an FFF extrusion system. The system utilizes a primary manifold that includes a cooling block, a heating block and a quick-change mechanism. This primary manifold is adapted to mate a filament tube/nozzle assembly. The quick-change mechanism, which in a particular embodiment utilizes a recessed biased-bearing arrangement, enables the filament/nozzle assembly to be removed and inserted without the use of any tools, and without causing any significant downtime for the FFF extrusion system. Once removed, the filament tube/nozzle assembly can be refurbished by a technician, trained so as not to over torque the tube/nozzle threaded interface. This refurbishment (typically consisting of a cleaning and the installation of a new nozzle) could be accomplished “off-line”, without any impact on the continued use of FFF extrusion system.