Injection molding machine

An injection molding machine, comprising:

• a clamping device configured to open, close, and clamp a mold;
• an injection device configured to inject a molten resin into a cavity of the mold that is clamped;
• and
• a control device configured to control the clamping device and the injection device, wherein
• the injection device includes
• a heating cylinder with a distal end configured to move in contact with or separate from the clamped mold,
• a screw configured to move forward and backward inside the heating cylinder, and
• a hopper configured to supply a granular resin to the heating cylinder, and
• the control device performs
• a plasticization process causing the screw to move backward during rotation to plasticize the granular resin supplied to the heating cylinder through the hopper in accordance with a plasticization condition,
• a purging process causing the screw to move forward in the heating cylinder separated from the mold to discharge the molten resin plasticized by the plasticization process,
• a correction process causing a learned model having learned in advance to correct the plasticization condition so as to bring a waveform data piece close to an ideal state, the waveform data piece indicating a change in a physical quantity obtained during a course of discharging the molten resin by the purging process, and
• an injection process causing the screw to move forward in the heating cylinder in contact with the clamped mold to inject the molten resin plasticized by the plasticization process into the cavity.