Direct-writing 3D printing device and method for bias-controllable continuous fiber reinforced composite material

• Main Authors: WANG QINGRUI, ZHANG DAOKANG, TIAN XIAOYONG, LI DICHEN
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2020
• 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 invention provides a direct-writing 3D printing device and method for a bias-controllable continuous fiber reinforced composite material. The direct-writing 3D printing device comprises a materialbarrel fixed by an external device, a spray head is connected to the bottom of the material barrel, and a printing bottom plate is arranged below the spray head; one side of the material barrel is connected with a solution storage cavity and an air pump through flexible pipes; a push rod is arranged in the material barrel and provided with a cavity containing sealing liquid and a capillary tube used for allowing continuous fibers to pass through, a small hole is formed in the top of the push rod, and the continuous fibers led out from the small hole are connected with a tensioning wheel; thepush rod is fixedly connected with a connecting shaft, and the connecting shaft is connected with an external vertical moving device through a rotating bearing and meanwhile connected with a motor through a belt pulley; the ce