Three dimensional printer for fiber reinforced composite filament fabrication
    25.
    发明授权
    Three dimensional printer for fiber reinforced composite filament fabrication 有权
    用于纤维增强复合长丝制造的三维打印机

    公开(公告)号:US09126367B1

    公开(公告)日:2015-09-08

    申请号:US14575558

    申请日:2014-12-18

    Abstract: Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to applying the filament from the conduit nozzle.

    Abstract translation: 描述了与三维打印机和增强长丝相关的各种实施例及其使用方法。 在一个实施例中,将无空隙的增强细丝送入导管喷嘴。 增强长丝包括可以是连续或半连续的芯和围绕芯的基体材料。 在从导管喷嘴施加细丝之前,将加强的长丝加热到大于基体材料的熔融温度的温度并小于芯的熔化温度。

    Apparatus for fiber reinforced additive manufacturing

    公开(公告)号:US11420382B2

    公开(公告)日:2022-08-23

    申请号:US16840868

    申请日:2020-04-06

    Abstract: Methods for additive manufacturing using a three-dimensional printer including at least one linear feed mechanism and a print head positioned proximate a build platen are disclosed. The methods include a step of providing and/or feeding an unmelted fiber reinforced composite filament at a feed rate by the at least one linear feed mechanism. The methods include heating the filament to a temperature at which a matrix material therein flows within at least one rounded outlet of the print head. The methods include moving the print head and the build platen relative to one another at a printing rate. The methods include applying a spreading force to the filament between the at least one rounded outlet of the print head and the build platen. The methods include a step of controlling a differential in the feed rate and printing rate using the at least one linear feed mechanism so that the feed rate and the printing rate are substantially the same.

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