Electromagnetic dynamic injection molding process for polymer and the device therefor

摘要

The present invention relates to polymer's electromagnetic dynamic injection moulding method and the apparatus therefor. The charging barrel (7) and the screw (9) as will as their associated components for carrying out the processes of plasticization, injection and pressure maintaining of the polymer are all disposed in the inner cavity of a metal moving body (2) driven to rotate pulsatorily by an electromagnetic winding (1). At the time when the screw and the metal moving body are simultaneously rotating pulsatorily, the screw is at the same time making axial pulsative displaments, so that the processes of plasticization, injection and pressure maintaining are all carried out in a periodic oscillating state. This type of injection moulding method and apparatus have the advantages of small volume, light weight, low manufacturing cost, low energy consumption, low noises, wide adaptability to materials and excellent quality of the moulded products. IMAGE