Polymer's electromagnetic dynamic injection molding method and the apparatus therefor
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United States of America Patent
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Sep 14, 1999
Grant Date -
N/A
app pub date -
Jun 20, 1997
filing date -
Jul 5, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A charging barrel and screw as well 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 driven to rotate pulsatorily by an electromagnetic winding. 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.
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