公开(公告)号：US3930600A

公开(公告)日：1976-01-06

申请号：US362772

申请日：1973-05-22

申请人： Victor Thomas Gardner

发明人： Victor Thomas Gardner

IPC分类号： B29C37/00 ,  B29C45/00 ,  B29C45/50 ,  B29C45/77 ,  B29C45/82 ,  B29F1/06

CPC分类号： B29C45/50

摘要： A method of and apparatus for injection molding of materials such, for example, as thermoplastic resinous material, utilizing a rotatable and reciprocal screw extruder for plasticizing and injecting the material into a mold cavity, and wherein an injection piston in a cylinder is operatively connected to the plasticizing screw to push the screw forward to effect injection into a mold of plasticized material in front of the screw. A supply of fluid pressure is positively applied to the injection piston to provide a back pressure to act against the reaction caused by the rotation of the plasticizing screw, and this back pressure may be regulated to correspond with the rearward displacement, of the screw.

摘要翻译： 一种用于将材料注射成型的方法和装置，例如作为热塑性树脂材料，利用可旋转和往复螺杆挤出机来将材料塑化和注入模腔中，并且其中气缸中的注射活塞可操作地连接到 增塑螺丝向前推动螺丝，以实现注射到螺杆前面的塑化材料的模具中。 向喷射活塞施加流体压力供应，以提供反作用力以抵抗由塑化螺杆的旋转引起的反作用，并且该背压可被调节以对应于螺杆的向后位移。