Plasticization device, three-dimensional shaping device, and injection molding device

A three-dimensional shaping device comprising:

• a cylinder having a supply port through which a material is supplied and the supply port is positioned on a side of the cylinder such that the cylinder extends above and below the supply port;
• a spiral screw configured to rotate inside the cylinder;
• a nozzle configured to discharge the material plasticized inside the cylinder towards a stage;
• a heating unit provided between the supply port in the cylinder and the nozzle;
• a drive motor configured to convert electricity into motive force to a rotation shaft to rotate the rotation shaft, that rotational shaft extending downwards from the drive motor;
• a case comprising a motor case portion that defines a hollow portion configured to accommodate at least a part of the drive motor, the motor case portion accommodating the drive motor higher than where the rotation shaft extends downwards from the drive motor, wherein:
• the case includes a refrigerant flow path that is provided therein configured to dissipate at least a portion of heat generated by the drive motor, the first refrigerant flow path extending higher than where the rotation shaft extends down from the drive motor;
• the cylinder includes a second refrigerant flow path formed therein, and
• the second refrigerant flow path has different densities in different areas at a same distance to the nozzle;
• and
• a control unit configured to control the drive motor and the heating unit.

An injection molding device, comprising:

• a cylinder having a supply port through which a material is supplied and the supply port is positioned on a side of the cylinder such that the cylinder extends above and below the supply port;
• a spiral screw configured to rotate inside the cylinder;
• a nozzle configured to discharge the material plasticized inside the cylinder towards a mold;
• a heating unit provided between the supply port in the cylinder and the nozzle;
• a drive motor configured to convert electricity into motive force to a rotation shaft to rotate the rotation shaft, that rotational shaft extending downwards from the drive motor;
• a case comprising a motor case portion that defines a hollow portion configured to accommodate at least a part of the drive motor, the motor case portion accommodating the drive motor higher than where the rotation shaft extends downwards from the drive motor, wherein:
• the case includes a refrigerant flow path that is provided therein configured to dissipate at least a portion of heat generated by the drive motor, the first refrigerant flow path extending higher than where the rotation shaft extends down from the drive motor,
• the cylinder includes a second refrigerant flow path formed therein, and
• the second refrigerant flow path has different densities in different areas at a same distance to the nozzle;
• and
• a control unit configured to control the drive motor and the heating unit.