Plasticizing device and three-dimensional shaping device

A three-dimensional shaping device comprising:

• a nozzle ejecting a shaping material;
• a plasticizing device plasticizing a material into the shaping material and supplying the shaping material to the nozzle;
• and
• a control unit controlling the plasticizing device,
• the plasticizing device comprising:
• a drive motor;
• a rotating unit driven to rotate about a rotation axis by the drive motor and having an end surface perpendicular to the rotation axis and a lateral surface intersecting with the end surface, the rotating unit being a cylindrical body that extends outward from an annular plate, the cylindrical surface of the cylindrical body defining the lateral surface, and the rotating unit including a plurality of blades that extend outward from the cylindrical body that each extend along an entire length of the cylindrical body;
• a barrel having a bottom surface facing the end surface of the rotating unit, and a heater;
• a case accommodating the rotating unit;
• and
• a material supply unit accommodating the material, wherein
• at least one of the barrel and the case has a sidewall surface facing the lateral surface of the rotating unit and standing up along an outer circumference of the bottom surface of the barrel,
• at the bottom surface of the barrel, a communication hole through which the shaping material flows out into the nozzle and a spiral groove part coupled to the communication hole are formed, and
• the lateral surface of the rotating unit and the sidewall surface together define a supply space where the material is supplied from the material supply unit to the groove part.