Injection molding device, injection molding system, and three-dimensional shaping device

An injection molding device comprising:

• a material storage unit storing a material;
• a screw drive motor;
• a plasticization unit including a rotor that rotates about a rotation axis by the screw drive motor, a barrel having a facing surface facing an end surface of the rotor, and a heater, the plasticization unit being configured to plasticize the material supplied from the material storage unit to produce a molten material that flows through a communication hole of the barrel, wherein a length of the rotor in a direction along the rotation axis is less than a length of the rotor in a direction perpendicular to the rotation axis;
• a nozzle through which the molten material is injected toward a mold;
• an injection control unit including an injection cylinder, a plunger and a plunger drive unit configured to drive the plunger, wherein the plunger slides inside the injection cylinder and pumps the molten material in the injection cylinder to the nozzle through the communication hole;
• and
• a material drying unit configured to collect waste heat of the screw drive motor and the plunger drive unit and dry the material in the material storage unit,
• wherein, the injection cylinder is couples to the communication hole, separate from the rotor, and receives the molten material from the communication hole, and
• wherein, the material drying unit includes:
• a flow path at least partially in contact with the screw drive motor and the plunger drive unit, wherein the flow path extends to the material storage unit;
• and
• a blowing mechanism configured to supply air to the flow path and feed the air warmed by the waste heat of the screw drive motor and the plunger drive unit into the material storage unit or to an outer wall of the material storage unit.