MATERIAL EXTRUSION SYSTEM AND DEVICE USING THE SAME

    公开(公告)号:US20230415399A1

    公开(公告)日:2023-12-28

    申请号:US18248743

    申请日:2021-10-01

    申请人: Lionel WINDELS

    发明人: Lionel WINDELS

    摘要: The present invention relates to a material extrusion head comprising at least one material feeding tube for feeding some extrusion material from one or multiple reservoirs to a heating block, the heating block, which comprises a through-hole and is adapted to generate heat for melting the material to be extruded passing by said through-hole, at least one extrusion nozzle provided at the end of the though-hole of the heating block for outputting the molten material, a support element detachably supporting the heating block and mounted on an extrusion system, and at least one rigid heat break tube portion provided at the end of each of the one or multiple material feeding tube and in contact with said heating block and an actioning system adapted to urge an end of each rigid heat break tube portion against said heating block or directly against the extrusion nozzle so as to provide a sealed extrusion material path.

    Die for extrusion molding, plastic manufacturing device, and plastic manufacturing method

    公开(公告)号:US11826942B2

    公开(公告)日:2023-11-28

    申请号:US17692129

    申请日:2022-03-10

    申请人: Takashi Tanaka

    发明人: Takashi Tanaka

    摘要: A die for extrusion molding includes an extrusion port configured to extrude a plastic composition, and a plastic flow channel configured to cause the supplied plastic composition to flow to the extrusion port. The plastic flow channel includes a supply flow channel, and an extrusion flow channel. The supply flow channel is configured to be supplied with the plastic composition. The extrusion flow channel has an upstream end coupled to the supply flow channel, and downstream end having the extrusion port. In the extrusion flow channel, a flow channel cross-sectional area perpendicular to the flow direction of the plastic composition in the extrusion flow channel gradually changes to the extrusion port, and an inner wall surface of a flow channel has a protruding surface protruding toward an inside of the flow channel in a cross section including an extrusion central axis and parallel to the extrusion central axis.

    SCREW MACHINE
    16.
    发明公开
    SCREW MACHINE 审中-公开

    公开(公告)号:US20230373148A1

    公开(公告)日:2023-11-23

    申请号:US18247817

    申请日:2021-12-01

    IPC分类号: B29C48/25 B29C48/40

    CPC分类号: B29C48/252 B29C48/402

    摘要: An extruder has a pair of linkage parts configured to respectively link end portions of a pair of output shafts of the speed reducer with end portions of a pair of screws coaxially. The linkage parts each has: a coupling having an insertion hole into which the end portion of the screw and the end portion of the output shaft are inserted; and a locking part attached to the end portion of the output shaft. The coupling has a first receiving portion configured to receive the end portion of the output shaft; the second receiving portion configured to receive the locking part; and a step portion formed between the first receiving portion and the second receiving portion. As the step portion is locked by the locking part, a relative movement of the coupling relative to the output shaft in a direction towards the screw is restricted.