Rotational printing head module having muti-cartridge

摘要

The printing head module includes a bracket, a plurality of cartridges, a first piston, a pivot shaft, and a control unit. The bracket includes a plurality of through holes. The cartridges coaxially aligned with each other, each of the cartridges includes a leaning portion and contains the modeling material and a nozzle for extruding the modeling material. The leaning portion is leaning against the bracket when the cartridge is located at the printing position. The first piston is configured to slide along an extensional axis of the cartridge and drive the cartridge to move toward the printing position. The pivot shaft is connected to the bracket and adapted to rotate the cartridge to a working location. The control unit is coupled to the pivot shaft and the first piston for controlling the first piston and the rotation of the bracket.

主权项

1. A printing head module configured to dispense a modeling material layer by layer to form a three-dimensional object on a base, the printing head module comprising:
a bracket comprising a plurality of through holes; a plurality of cartridges coaxially aligned with each other, each of the cartridges comprising a leaning portion and containing the modeling material and a nozzle for extruding the modeling material therefrom, each of the cartridges movably disposed in the corresponding through hole and adapted to move between an initial position and a printing position, the leaning portion leaning against the bracket when the cartridge located at the printing position; a first piston configured to slide along an extensional axis of the cartridge and drive a printing cartridge to move from the initial position toward the printing position; a pivot shaft, connected to the bracket and adapted to rotate the cartridge to a working location aligned with the first piston for dispensing the modeling material; and a control unit, coupled to the pivot shaft for controlling the rotation of the bracket and to the first piston for controlling the first piston, so as to drive the cartridge rotated to the working location to move from the initial position toward the printing position, wherein a distance between the base and the nozzle of the printing cartridge rotated to the working location is shorter than a distance between the base and the nozzles of the rest of the cartridges.