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    • 27. 发明授权
    • Composite extruding apparatus of rubber and method of extruding unvulcanized rubber
    • 橡胶复合挤出设备和挤出未硫化橡胶的方法
    • US06468067B1
    • 2002-10-22
    • US09659117
    • 2000-09-13
    • Hiroshi Ikegami
    • Hiroshi Ikegami
    • B29B742
    • B29C47/367B29C47/0019B29C47/364B29C47/38B29K2021/00
    • With the same screw diameter as in conventional screw extruders, the screw length is reduced, whereby the material residue is reduced, the throughput is increased, the screw motive power is reduced, the temperature control is facilitated to prevent rubber scorching, and extrusion molding of a vulcanizalbe rubber composition is made possible at a lower temperature. In a composite extruding apparatus of rubber, a gear pump 20 is connected to a tip end of a screw extruder 10 via a screen mesh 14 having a breaker plate 15, and a die head 24 is connected to an ejecting side of the gear pump 20, wherein the screw extruder 10 plasticizes a fed rubber composition G mainly by friction with an inner surface of a barrel 12 and by heating from outside and extrudes the rubber composition G from the screen mesh 14 to a space on an inlet side of the gear pump 20; the screen mesh 14 rectifies the rubber composition G passing through the screen mesh 14 towards the gear pump 20 while stirring and plasticizing the rubber composition G by friction and shear; and the gear pump 20 further stirs and platicizes the ruber composition G, which is fed to the space on the inlet side, by shear and compression, and gives a forcing pressure to the die head 24.
    • 与常规螺杆挤出机相同的螺杆直径,螺杆长度减小,材料残渣减少,生产能力提高,螺杆动力降低,温度控制有利于防止橡胶烧焦,挤出成型 硫化橡胶组合物在较低温度下成为可能。 在橡胶复合挤压装置中,齿轮泵20通过具有破碎板15的筛网14与螺杆挤出机10的前端连接,模头24连接到齿轮泵20的排出侧 ,其中螺杆挤出机10主要通过与筒体12的内表面摩擦并通过从外部加热而使进料的橡胶组合物G增塑,并将橡胶组合物G从筛网14挤出到齿轮泵入口侧的空间 20; 筛网14将通过筛网14的橡胶组合物G对齿轮泵20进行整流,同时通过摩擦和剪切来搅拌和塑化橡胶组合物G; 并且齿轮泵20进一步搅拌并且使通过剪切和压缩被供给到入口侧的空间的凹部组合物G变形,并向模头24施加强制压力。