| 摘要 |
The present invention relates to an injection molding machine. The injection molding machine of the present invention comprises: a first and a second mold producing an injection cavity by being mixed to each other; a resin supplier supplying a molten resin into the injection cavity; and pushing pin inserted through a pushing pin insertion hole provided on either one of the first or second molds to push a mold product. Silicon oil is filled in a space between an inner wall of the pushing pin insertion hole and the pushing pin. Also, the air inside the injection cavity is heated by the molten resin introduced into the injection cavity and thus the pressure therein increases automatically, by sealing around the pushing pin and the pushing pin insertion hole after filling the pushing pin insertion hole with silicon oil. Therefore, it is possible to prevent evaporation of moisture of impurities by increasing pressure in the injection cavity through a simple structure. |
