Injection molding apparatus, cooling plate for injection molding apparatus, and cassette mold

An injection molding apparatus, comprising:

• a molding mold including a fixed mold in which a gate into which a molding material flows is formed, and a movable mold in which a cavity portion is formed and which is separated from the fixed mold when the molding mold is opened;
• a nozzle in which a flow path that guides the molding material to the gate is formed;
• a first cooling plate which is detachably attached to an opposite-side surface of the movable mold from a surface to be in contact with the fixed mold and which is provided with a first cooling mechanism therein, wherein the first cooling mechanism cools the molding material in the cavity portion;
• an extrusion mechanism that comprises an ejector pin, a support plate which is a plate-like member that supports the ejector pin, a support rod, and a spring, wherein
• the ejector pin passes through the movable mold for insertion into the cavity portion,
• the movable mold comprises a first through hole for insertion of the support rod,
• the spring is inserted around the support rod, and
• the first cooling plate is between the support plate and the movable mold;
• and
• a control unit configured to:
• acquire feature data that includes a type of the molding material, molding accuracy, and cycle time associated with a molding process of the molding material;
• and
• select, based on the acquired feature data, the first cooling plate from a plurality of first cooling plates, wherein the selection is based on a machine learning model that is trained with a correspondence between the plurality of first cooling plates and the feature data.