3D printing extrusion device and 3D printer

• Main Authors: LIU HUILIN, TANG JINGKE, YAN LUOLIN, AO DANJUN, CHEN CHUN
• Format: Patent
• Language: Chinese; English
• Published: 03.12.2021
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The utility model belongs to the technical field of 3D printing, and discloses a 3D printing extrusion device and a 3D printer, the 3D printer comprises a box body, a motor and an extrusion assembly, the box body is internally provided with an extrusion cavity, the motor is arranged on the box body, the extrusion assembly comprises a first gear, a second gear, a rotating piece and an elastic piece, one end of the rotating piece is rotatably arranged on the inner wall of the extrusion cavity, and the other end of the rotating piece is arranged on the elastic piece; the other end of the rotating part is movably connected to the inner wall of the extrusion cavity through an elastic part, the first gear is in transmission connection with the output end of the motor and rotationally arranged on the rotating part, the second gear is configured to be capable of being jointly engaged with the first gear and extruding materials, and the wrench is rotationally arranged on the side wall of the box body; and the wrench a