Abstract: There is provided an injection mold system and a method for injection molding to produce a three-dimensional object. The system including: one or more extruders each adapted to receive one or more cartridges, the one or more cartridges containing extrudable material; an injection nozzle dimensioned to be positioned into an injection inlet of a mold; tubing each connecting one of the cartridges to the injection nozzle; and one or more controllers configured to control flow of the extrudable material from the one or more extruders to the injection nozzle to fill at least a portion of the interior chamber with the extrudable material to produce the three-dimensional object.

Abstract: There is provided a system, apparatus, and method for extruding and mixing materials for three-dimensional printing using a three-dimensional printing device. The system includes: one or more extruders each adapted to receive and hold one or more syringes or cartridges, the syringes or cartridges containing extrudable material; a flexible tubing connectable to the syringes or cartridges received by the one or more extruders, an opposite end of the tubing mountable to an extrusion nozzle for extruding the extrudable material for three-dimensional printing; and a logic controller configured to control the flow of the extrudable material from the one or more extruders to a material mixing apparatus mounted on the three-dimensional printing device, the logic controller controlling the mixing of the extrudable material from the one or more syringes or cartridges.

Abstract: There is disclosed a multi-material extruder and extrusion method for 3D printing, and more particularly to an apparatus and method that is adapted to extrude a wide range of materials for printing 3D structures. In an aspect, the apparatus comprises a frame adapted to receive a removable syringe or cartridge with a depressible piston in an extended position, the syringe or cartridge containing material to be extruded. An extrusion motor is under the control of an extruder logic module to determine how quickly the piston of the syringe or cartridge is to be depressed to achieve a desired rate of extrusion of the material. A flexible length of tubing connects the tip of the syringe or cartridge to an extruder nozzle, which nozzle is mounted to a stylus which may be hand-held or mounted to a chassis of a 3D printing device. A feedback signal is used to provide a feedback signal to the extruder logic module to determine the rate of extrusion of material.