Extruder screw tip and associated flow channel
    1.
    发明授权
    Extruder screw tip and associated flow channel 失效
    挤出机螺杆尖端和相关的流动通道

    公开(公告)号:US06887062B1

    公开(公告)日:2005-05-03

    申请号:US09857552

    申请日:1999-12-01

    IPC分类号: B29C47/00 B29C47/60 B29C47/64

    摘要: A screw nose for a rubber extruder screw has an upstream portion of increasing diameter providing working engagement of the rubber flowing from the screw with the extruder barrel and a downstream portion of decreasing diameter providing working engagement of the rubber with a converging tapered wall of a flow channel block for reducing the shrinkage and pressure drop at the discharge end of the screw and thereby prevent porosity and blisters in an extruded rubber component.

    摘要翻译: 用于橡胶挤出机螺杆的螺丝头具有增加直径的上游部分,其提供从螺杆流出的橡胶与挤出机筒的加工接合,并且具有减小的直径的下游部分提供橡胶与流动的会聚锥形壁的加工接合 通道块,用于减小螺杆排出端的收缩和压降,从而防止挤出的橡胶组分中的孔隙和气泡。

    Extruder with feedback loop control
    3.
    发明授权
    Extruder with feedback loop control 失效
    具有反馈回路控制的挤出机

    公开(公告)号:US5836680A

    公开(公告)日:1998-11-17

    申请号:US622662

    申请日:1996-03-26

    摘要: An extruder for extruding an associated material includes an extruder housing that has a feed section, a center section that includes a throttle section, and an outlet section with an extruder screw disposed in the extruder housing. The extruder also includes a throttle at the throttle section. The throttle has a plurality of pins that extend radially into the housing. The pins are adjusted by a cam extending around the extruder housing. The cam has an inner wall that has a plurality of cam surfaces engageable by pins. The radius of each of the cam surfaces gradually decreases from a maximum radius to a minimum radius distance. The pins have springs that urge the pins radially outward to contact the inner wall of the cam. The cam is rotated by a piston and cylinder assembly. The extruder further includes sensors for temperature, gauge, weight, and other properties of the material. The extruder also has a control apparatus for controlling the speed of the extruder and the throttle based upon any combination of temperature, gauge, weight, and production requirements while the extruder is in operation.

    摘要翻译: 用于挤出相关材料的挤出机包括挤出机壳体,其具有进料部分,包括节流部分的中心部分和具有设置在挤出机壳体中的挤出机螺杆的出口部分。 挤压机还包括在节流部分处的节气门。 节气门具有径向延伸到壳体中的多个销。 销通过围绕挤出机壳体延伸的凸轮进行调节。 凸轮具有内壁,该内壁具有可通过销接合的多个凸轮表面。 每个凸轮表面的半径从最大半径逐渐减小到最小半径距离。 销具有弹簧,其将销径向向外推动以接触凸轮的内壁。 凸轮由活塞和气缸组件旋转。 挤出机还包括用于材料的温度,规格,重量和其它性能的传感器。 挤出机还具有用于在挤出机运行时基于温度,量规,重量和生产要求的任何组合控制挤出机和节流阀的速度的控制装置。

    Universal flow channel
    4.
    发明授权
    Universal flow channel 有权
    通用流道

    公开(公告)号:US06340123B1

    公开(公告)日:2002-01-22

    申请号:US09424677

    申请日:2000-03-30

    IPC分类号: B05B114

    摘要: Apparatus for directing the flow of material from a supply source to one or more shaping dies has a flow channel therein. A flow directing insert (34A) located in the downstream region of the flow channel spreads the material toward the outer walls and improves uniformity of flow in an exit zone (40). In the downstream region (11), the channel height is gradually decreased and levels off near the exit. The flow channel may be split into two or mom flow branches (15A, 15B), each flow branch having a flow directing insert (34A) therein.

    摘要翻译: 用于将材料从供应源引导到一个或多个成型模具的装置在其中具有流动通道。 位于流动通道的下游区域中的流动引导插入件(34A)将材料扩散到外壁并且改善出口区域(40)中的流动的均匀性。 在下游区域(11)中,通道高度逐渐降低,离开出口附近水平。 流动通道可以分成两个或妈妈流动分支(15A,15B),每个流动分支在其中具有流动引导插入件(34A)。