| 摘要 |
PROBLEM TO BE SOLVED: To apply large vibration energy due to ultrahigh speed vibration to the resin in a mold. SOLUTION: In this injection molding machine for injecting a molten resin in the mold to fill the mold, a linear motor is used as a drive source for applying vibration at least to a part of the mold, for example, a core mold to apply vibration energy to the whole of the resin in the cavity of the mold by the core mold coming into contact with the whole of one side of the resin. The linear motor is composed of a stator around which a winding is wound and a moving member linearly moved with respect to the stator and the stator has a plurality of opposed parts wherein magnetic pole teeth are opposed to each other. A plurality of opposed parts have a structure wherein the magnetic pole teeth of the adjacent opposed parts are staggered and the linear moving member having a permanent magnet is arranged between the magnetic pole teeth constituting the opposed parts. COPYRIGHT: (C)2006,JPO&NCIPI
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