| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding apparatus which can heat up an intracavity molding material by transmitting sufficient ultrasonic vibration to the molding material while inhibiting a load on a vibration transmission system to be brought to bear on the device under a simple configuration with a broad degree of design freedom, and an injection molding method. SOLUTION: In the injection molding apparatus, an insert mold 4 with a cavity 13 is provided in a main mold 3 and has one end of a vibration transmitting wire 6, connected with the mold 4 through a space 3a, while a vibration generating part which can generate an ultrasonic wave, is connected with the other end of the vibration transmitting wire 6. Thus the insert mold 4 is vibrated by the vibration generating part through the vibration transmitting wire 6. The vibration energy generated by the vibration generating part can be concentrically transmitted to the insert mold 4 which comes into contact with the molding material. In addition, in order to transmit the ultrasonic wave by the vibration transmitting wire 6 passing through the internal space 3a of the mold 3, it is possible to transmit the vibration easily and significantly scale down the vibration transmission system. Consequently, the ultrasonic energy does not adversely affect the other part of the device. COPYRIGHT: (C)2006,JPO&NCIPI
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