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    Co-rotating self-cleaning multi-screw extruder with speed ratio of 2.5 and extruding method therefor
    3.
    发明授权
    Co-rotating self-cleaning multi-screw extruder with speed ratio of 2.5 and extruding method therefor 有权

    公开(公告)号：US11110637B2

    公开(公告)日：2021-09-07

    申请号：US16609059

    申请日：2017-09-25

    申请人： Guangdong Industry Polytechnic

    发明人： Baiping Xu ,  Huiwen Yu ,  Liang He ,  Jinwei Chen ,  Wenliu Zhuang ,  Mei Li

    IPC分类号： B29C48/405 ,  B01F7/00 ,  B29C48/44 ,  B29C48/655 ,  B29C48/40 ,  B29C48/415

    摘要： A co-rotating self-cleaning multi-screw extruder with a speed ratio of 2.5 and an extruding method therefor are disclosed. The screw mechanism includes a center screw and peripheral screws which rotate in the same direction. The peripheral screws are each of a double threaded structure, and the center screw is of a quintuple threaded structure. The rotation speed of the peripheral screws is 2.5 times that of the center screw, and the peripheral screws are always meshed with the center screw, whereas the adjacent peripheral screws are intermittently meshed with each other. The extruding method therefor is as follows: there is a periodically open space between adjacent peripheral screws, providing the periodical and intermittent mixing action, so that material from different thread grooves is mixed with each other. Meanwhile, the topological chaos action, by which the material is cut into two portions, is formed between the center screw and the peripheral screws, and the chaos mixing is caused by the random motion which is generated from the periodical changes of the channel, so that a periodical action of “compression-expansion” is achieved. Furthermore, due to the tensile force field action caused by the differences in rotation speed between the center screw and the peripheral screws, the compression preheating and dispersion mixing of the material are achieved. The co-rotating self-cleaning multi-screw extruder effectively improves the efficiency of conveying and mixing of materials.

    TWIN SCREW EXTRUDER
    5.
    发明申请
    TWIN SCREW EXTRUDER 有权

    公开(公告)号：US20210138711A1

    公开(公告)日：2021-05-13

    申请号：US16322762

    申请日：2017-08-04

    申请人： THE JAPAN STEEL WORKS, LTD.

    发明人： Yoshitaka KIMURA ,  Makoto TOJO ,  Daigo SAGA

    IPC分类号： B29C48/285 ,  B29C48/00 ,  B29C48/40 ,  B29C48/405 ,  B29C48/54 ,  B29C48/55 ,  B29C48/63 ,  B29C48/68 ,  B29C48/685

    摘要： A twin screw extruder (10) for producing a fiber-reinforced resin composition, which is obtained by charging the extruder with a thermoplastic resin and reinforcing fibers in roving form and the reinforcing fibers being fibrillated/cut and being dispersed/kneaded into the thermoplastic resin, comprises: a plate-shaped blade (15), which protrudes from the inner surface of a cylinder (11) and faces a screw (20) and the longitudinal direction of which faces the axial direction of the cylinder; and a height adjustment means (16) for adjusting the gap between the blade (15) and the screw (20).

    Co-rotating dual speed multi-screw extruder and processing method thereof
    9.
    发明授权
    Co-rotating dual speed multi-screw extruder and processing method thereof 有权

    公开(公告)号：US11648721B2

    公开(公告)日：2023-05-16

    申请号：US16530860

    申请日：2019-08-02

    申请人： WUYI UNIVERSITY

    发明人： Baiping Xu ,  Huiwen Yu ,  Yaoxue Du

    IPC分类号： B29C48/405 ,  B29C48/425 ,  B29C48/59 ,  B29C48/25

    CPC分类号： B29C48/405 ,  B29C48/2517 ,  B29C48/425 ,  B29C48/59

    摘要： The disclosure discloses a co-rotating dual speed multi-screw extruder and a processing method thereof, the co-rotating dual speed multi-screw extruder enables a first screw and a second screw with the same outer diameter to co-rotate at different speed in a barrel, and the two screws wipe with each other, to achieve self-cleaning in processing; and circular arcs meshed with each other are respectively arranged between root diameters and top diameters of the two screws to form a first step structure and a second step structure, thus breaking an axial symmetry of a cross-sectional contour of the screws, and moreover, the first step structure and the second step structure are periodically meshed in a meshing zone in a staggered manner, so that a flow channel in the meshing zone is changed in a topological way, a strong elongation action and a strong disturbance action are effectively introduced in the meshing zone.