Injection molding machine

摘要

An injection device includes a plunger that has a cylindrical portion formed in an outermost diameter. A nozzle adapter is provided with a molding material charge port. A pressure control device injects a molding material into a barrel through the molding material charge port and moves the plunger backward while applying a set back pressure thereto in a metering.

主权项

1. An injection molding machine including an injection device and configured to perform a molding cycle of injecting a molding material supplied to an inner diameter portion provided in a barrel into a mold, so as to mold the molding material, the injection molding machine comprising:
a plunger disposed inside the barrel, having an outermost diameter formed in a cylindrical surface, and movable forward or backward and rotatable; a molding material charge portion configured to charge a liquid molding material to the front side of the plunger, and provided in a nozzle when the nozzle is directly attached to the barrel or provided in the nozzle or a nozzle adapter when the nozzle is attached to the barrel through the nozzle adapter; and a control device configured to control the backward movement of the plunger based on the pressure of the liquid molding material charged from the molding material charge portion in a metering of the molding cycle.