| 摘要 |
The present invention provides an injection device in a molding machine having: a cylinder 1 having an outlet member 5 formed at a tip-end injection side, a stopper part 6 provided at a rear side, and a pellet supply opening 11a for supplying plastic pellets; a melting device 2 having a plurality of melting holes 22 formed communicating from inflow-side large openings 22a to outflow-side small openings 22b in the longitudinal direction of a device main body 21, the melting device 2 having a diameter equal to an inner diameter of the cylinder 1; a heating unit 4 for heating the melting device 2; and a drive unit 3 for causing the melting device 2 to move in a reciprocating manner. The outflow-side small openings 22b of the melting device 2 face the outlet member 5, and the melting device 2 operates as a plunger in the cylinder 1 and a return travel of the drive unit 3 is configured as a melting step of melting the plastic pellets and an outward travel is configured as an injection step of melted resin q. |
