| 摘要 |
PROBLEM TO BE SOLVED: To provide an injection molding machine capable of being used in both of sandwich molding and two-material molding and equipped with a simple structure as compared with a conventional injection molding machine. SOLUTION: This injection molding machine is constituted of a nozzle unit 10, a first injection unit 30, a second injection unit 40 and the like. The nozzle unit 10 is equipped with a first nozzle 11 and a second nozzle 12 on the leading end side thereof and also equipped with a first port 13, a second port 14 and a third port 15 on the rear end side thereof. A first flow channel 16 connects the first port 13 and the first nozzle 11, and a third flow channel 18 connects the third port 15 and the second nozzle 12 while a second flow channel 17 connects the second port 14 and the first nozzle 11 to meets with the first flow channel 16 immediately before the first nozzle 11. At a part on this side of the confluent point 19, the second flow channel 17 is provided on the center axis of the first nozzle 11 and the first flow channel 16 is formed as an annular flow channel for surrounding the periphery of the second flow channel 17. COPYRIGHT: (C)2005,JPO&NCIPI
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