HOT END OF MOLDING MATERIAL FOR THREE-DIMENSIONAL PRINTING DEVICE, AND THREE-DIMENSIONAL PRINTING DEVICE EQUIPPED WITH HOT END

摘要

To provide a hot end of a molding material for a highly reliable three-dimensional printing device that prevents jamming of the molding material.SOLUTION: The hot end of the molding material for a three-dimensional printing device includes a supply part having a supply port of a filament-shaped molding material, a melting part that has a heating member attached thereto and melts the molding material supplied from the supply part, a discharge part that has a discharge port that discharges the molding material melted in the melting part, and a passage communicating the supply port and the discharge port, and a ring-shaped backflow prevention member is provided in the passage to prevent the molding material melted in the melting part from flowing back to the supply part side.SELECTED DRAWING: Figure 1A