知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.08 seconds)

    Polymer melting and extruding apparatus with linear downstream threads
    1.
    发明授权
    Polymer melting and extruding apparatus with linear downstream threads 有权
    具有线性下游丝的聚合物熔融挤出设备

    公开(公告)号：US06454454B1

    公开(公告)日：2002-09-24

    申请号：US09614180

    申请日：2000-07-11

    Applicant: Robert A. Barr

    Inventor： Robert A. Barr

    IPC: B29B742

    CPC classification number: B29C47/361 ,  B29C47/0009 ,  B29C47/60 ,  B29C47/6006 ,  B29C47/6012 ,  B29C47/6043 ,  B29C47/6075 ,  B29C47/627

    Abstract: An extruder screw mechanism has a barrel that is heated by heating coils, an internal screw, and a cylindrical melt sleeve having a plurality of circumferentially spaced, axially extending, radial slots there through located between the external barrel and the internal screw. Another embodiment of the extruder has a barrel and an internal screw, with the internal screw having either a single central axial bore or a plurality of internal axial bores. The internal screw is provided with a plurality of external threads, with the threads each having a curved starting portion with a helix angle that has a finite value and gradually increases along an initial portion of the screw until the threads are substantially linear and parallel to the axis of the screw along the melting portion of the screw; a related embodiment has threadless portion separating the linear threads from the curved upstream threads. Circumferentially spaced, axially extending, radial slots extend from the outer surface of the screw along the melt section portion of the screw radially inwardly to an associated axial bore for removing melted polymer as it forms between solid polymer and a heated surface.

    Abstract translation: 挤出机螺杆机构具有通过加热线圈加热的筒体，内螺纹和圆柱形熔融套筒，其具有位于外筒和内螺钉之间的多个周向间隔开的轴向延伸的径向狭槽。 挤出机的另一实施例具有筒体和内螺纹，内螺纹具有单个中心轴向孔或多个内部轴向孔。 内螺纹设置有多个外螺纹，螺纹各自具有弯曲起始部分，螺旋角度具有有限值，并且沿螺杆的初始部分逐渐增加，直到螺纹基本上线性并平行于螺纹 沿着螺杆的熔化部分的螺杆的轴线; 相关实施例具有将线性螺纹与弯曲的上游螺纹分离的无螺纹部分。 周向间隔开的轴向延伸的径向狭槽从螺杆的外表面沿着螺杆的熔体部分径向向内延伸到相关联的轴向孔，用于在固体聚合物和加热表面之间形成时除去熔融的聚合物。

    Screw extruder with a rotatable barrel section
    2.
    发明授权
    Screw extruder with a rotatable barrel section 失效
    螺杆挤出机具有可旋转的筒部

    公开(公告)号：US4708617A

    公开(公告)日：1987-11-24

    申请号：US871332

    申请日：1986-06-06

    Applicant: Fox J. Herrington

    Inventor： Fox J. Herrington

    IPC: B29C47/08 ,  B29C47/36 ,  B29C47/00

    CPC classification number: B29C47/0847 ,  B29C47/0808 ,  B29C47/361 ,  B29C47/6018 ,  B29C47/0023 ,  Y10S425/021

    Abstract: A screw extruder comprises a barrel including a section that is supported for rotation about the longitudinal axis of the barrel. A screw extends and is supported for rotation in the barrel; and, in use, rotation of the screw rotates and advances plastic material through the barrel. Rotation of the screw also causes the rotatable barrel section to rotate, and a brake is connected to that rotatable section to maintain the rotational speed of the rotatable section less than the rotational speed of the extruder screw. The rotational speed of the screw relative to the rotatable barrel section controls the relative rates at which plastic is mixed, heated, and pressurized in the barrel.

    Abstract translation: 螺杆挤出机包括一个筒体，该筒体包括一个围绕筒的纵向轴线旋转的部分。 螺杆延伸并被支撑以在筒中旋转; 并且在使用中，螺杆的旋转旋转并使塑料通过筒体。 螺杆的旋转也使得可旋转的筒部旋转，并且制动器连接到该可旋转部分以保持可旋转部分的旋转速度小于挤出机螺杆的旋转速度。 螺杆相对于可旋转筒部分的旋转速度控制塑料在筒中混合，加热和加压的相对速率。

Patent Agency Ranking