To provide an injection molding machine having a metering device used for sending a predetermined accurate amount of a molten material into each mold hole.
This injection molding machine 10 is equipped with a first manifold 12 having a first manifold passage 14 which has a first discharge port for sending a first melt flow into the first nozzle passage 52 of a nozzle 30, a second manifold 22 having a second manifold passage 24 which has a second discharge port 29 for sending a second melt flow into the second nozzle passage 54 of the nozzle, the mold hole 60 communicating with the nozzle passages through a molding gate 34, and the on-off mechanism of the molding gate and an injection piston 70 extending into the passage between the first discharge port and the first nozzle passage. The injection piston has the outer wall being in contact with the inner wall of the passage and can be moved through the passage. The melt arranged in the melt chamber 78 of the first nozzle passage is allowed to flow in the mold hole by the movement of the injection piston.
| JP3802613 | HOT-RUNNER MOLD |
| JPH06226795 | INJECTION MOLD |
| JP2004160730 | MOLD APPARATUS HAVING HOT RUNNER |
| JPH05104580A | 1993-04-27 | |||
| JPH09131761A | 1997-05-20 | |||
| JPS62268618A | 1987-11-21 | |||
| JPH0740400A | 1995-02-10 | |||
| JPH06114883A | 1994-04-26 | |||
| JPS5545374B2 | 1980-11-18 |
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma