Abstract: A 3D pen capable of feeding out drawing materials of different colors simultaneously, and a nozzle thereof having a heater tip, a first installation seat and a second installation seat; the heater tip and the first installation seat are fixedly connected with each other; the first installation seat and the second installation seat are fixedly connected with each other; an outer wall of the heater tip has a recessed portion provided with a winding portion for installation of a heating device; a right end of the heater tip is provided with a third insertion portion; the third insertion portion is connected with the first installation seat; at least three feeding channels independent of one another are provided inside the heater tip; two ends of each of the feeding channels extend to a left end surface and a right end surface of the heater tip respectively.

Abstract: A 3D pen capable of feeding out drawing materials of different colors simultaneously is provided having a shell, a control mechanism, several transmission mechanisms, several feeding mechanisms, and a nozzle; the shell and the control mechanism are connected with each other; the control mechanism comprises a micro-processor unit (MCU); the MCU is electrically connected with the transmission mechanisms; the transmission mechanisms are connected with the feeding mechanisms; the feeding mechanisms are connected with the nozzle. The nozzle has several feeding channels extending along a left end and a right end of the nozzle.

Abstract: A 3D pen capable of feeding out drawing materials of different colors simultaneously, and a nozzle thereof having a heater tip, a first installation seat and a second installation seat; the heater tip and the first installation seat are fixedly connected with each other; the first installation seat and the second installation seat are fixedly connected with each other; an outer wall of the heater tip has a recessed portion provided with a winding portion for installation of a heating device; a right end of the heater tip is provided with a third insertion portion; the third insertion portion is connected with the first installation seat; at least three feeding channels independent of one another are provided inside the heater tip; two ends of each of the feeding channels extend to a left end surface and a right end surface of the heater tip respectively.

Abstract: A 3D pen capable of feeding out drawing materials of different colors simultaneously is provided having a shell, a control mechanism, several transmission mechanisms, several feeding mechanisms, and a nozzle; the shell and the control mechanism are connected with each other; the control mechanism comprises a micro-processor unit (MCU); the MCU is electrically connected with the transmission mechanisms; the transmission mechanisms are connected with the feeding mechanisms; the feeding mechanisms are connected with the nozzle. The nozzle has several feeding channels extending along a left end and a right end of the nozzle.

Abstract: A 3D pen, having a shell, a material feeding device, a heating device and a control chip; a material feeding opening is provided on the shell; the material feeding device has a material feeding motor, a motion transmission mechanism and a material feeding mechanism; the material feeding motor is longitudinally disposed along the shell; a single start worm is provided at a rotation axis of the material feeding motor; the single start worm is connected with the motion transmission mechanism; the material feeding mechanism has a material feeding gear and an assistant wheel; the motion transmission mechanism is connected with the material feeding gear; a wire feeding gap is provided between the material feeding gear and the assistant wheel; the heating device has a nozzle and a heating cavity; the material feeding motor and the heating cavity are both electrically connected with the control chip.