Quality management device and die-cast molding machine

A die-cast molding machine comprising:

• a clamping device which holds a die configuring a cavity,
• an injection device which is capable of ejecting a melt which is in an injection sleeve communicated with the cavity into the cavity,
• an active gas supplying device which is capable of supplying active gas to the injection sleeve,
• a vacuum sensor which is capable of detecting an air pressure in the cavity, and
• a control device which makes a good/defective judgment of quality of the die-cast product in relation to the amount of blowholes based on the air pressure which the vacuum sensor detects during the injection.

A die-cast molding machine comprising

• a clamping device which holds a die configuring a cavity,
• an injection device which is capable of ejecting a melt which is in an injection sleeve communicated with the cavity into the cavity,
• an active gas supplying device which is capable of supplying active gas to the injection sleeve,
• a vacuum sensor which is capable of detecting an air pressure in the cavity, and
• a control device which is capable of controlling the active gas supplying device based on the air pressure which the vacuum sensor detects.