The invention discloses a 3D printer capable of recycling 3D printing plastics, belonging to the field of 3D printing. It solves the problem that recycled 3D printing plastics in the prior art cannot be directly used for printing. The core technical solution includes a recycling device and a printing device. The recycling device comprises a main frame, as well as a crushing assembly and a melt extrusion assembly mounted on the main frame. The crushing assembly crushes recycled plastics into plastic particles and conveys them to the melt extrusion assembly, which melts the plastic particles and extrudes them into plastic filaments. The recycling device further includes a cooling and traction assembly for cooling the plastic filaments and delivering them to the printing device. The melt extrusion assembly consists of a melting cavity and an extrusion nozzle; the cooling and traction assembly is arranged on one lateral side of the melting cavity, and the extrusion nozzle faces the cooling and traction assembly. The invention is mainly designed to improve the printing quality of direct 3D printing with recycled plastic materials, and also provides a printing method for the aforesaid 3D printer.

Country Code: CN

Application Number: CN201710188002.1