SYSTEM AND METHOD FOR 3D CONSTRUCTION PRINTING

    公开(公告)号:WO2020102208A3

    公开(公告)日:2020-05-22

    申请号:PCT/US2019/060941

    申请日:2019-11-12

    Applicant: STRATASYS,INC.

    Abstract: A large-scale additive manufacturing system (10) for printing a structure (17) includes an extrusion system (11, 12, 14, 16) and a knitting system (20). The extrusion system includes a nozzle (11) configured to receive a supply (14) of structural material and to selectively dispense the structural material in flowable form, and a first gantry (12) configured to move the nozzle (11) along toolpaths defined according to a structure (17) to be printed such that structural material (14) may be dispensed along the toolpaths to print a series of structural layers (231), wherein the series of structural layers (231) bond together to form all or a portion of the structure (17). The knitting system (20) includes a tow feeder (222) configured to feed a supply of tow material to a location proximate a current course of loops (31, 230) extending above an upper surface (244) of a current structural layer or extending above a base surface in regions where no structural layer has been printed, and a hooking device (228) configured to engage the tow material and bring it through the current course of loops (356) to form a subsequent course of loops (380) interwoven with the current course of loops (356). A controller (38) is configured to operate the knitting system (11, 12, 14, 16) to form additional subsequent courses of loops (380) each interwoven with a current course of loops (356) after each of the series of structural layers (231) are printed, wherein the interwoven courses of loops create (356, 380) a reinforcement network of knitted loops embedded in the structure (17), and wherein the series of structural layers (231) are tied together.

    SYSTEM AND METHOD FOR 3D CONSTRUCTION PRINTING

    公开(公告)号:WO2020102208A2

    公开(公告)日:2020-05-22

    申请号:PCT/US2019/060941

    申请日:2019-11-12

    Applicant: STRATASYS,INC.

    Abstract: A large-scale additive manufacturing system (10) for printing a structure (17) includes an extrusion system (11, 12, 14, 16) and a knitting system (20). The extrusion system includes a nozzle (11) configured to receive a supply (14) of structural material and to selectively dispense the structural material in flowable form, and a first gantry (12) configured to move the nozzle (11) along toolpaths defined according to a structure (17) to be printed such that structural material (14) may be dispensed along the toolpaths to print a series of structural layers (231), wherein the series of structural layers (231) bond together to form all or a portion of the structure (17). The knitting system (20) includes a tow feeder (222) configured to feed a supply of tow material to a location proximate a current course of loops (31, 230) extending above an upper surface (244) of a current structural layer or extending above a base surface in regions where no structural layer has been printed, and a hooking device (228) configured to engage the tow material and bring it through the current course of loops (356) to form a subsequent course of loops (380) interwoven with the current course of loops (356). A controller (38) is configured to operate the knitting system (11, 12, 14, 16) to form additional subsequent courses of loops (380) each interwoven with a current course of loops (356) after each of the series of structural layers (231) are printed, wherein the interwoven courses of loops create (356, 380) a reinforcement network of knitted loops embedded in the structure (17), and wherein the series of structural layers (231) are tied together.

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