Wire replacing mechanism capable of automatically replacing 3D consumable wires

The invention discloses a wire replacing mechanism capable of automatically replacing 3D consumable wires. The device comprises a wire changing structure, a clamping wire feeding structure and a fusing detection structure. The wire changing structure comprises a rotary wire changing part, a first photoelectric sensor and a rotary motor. The clamping wire feeding structure comprises a gear set, a grooved wheel, a gear rack set, an extrusion motor and a clamping steering engine. The fusing detection structure comprises a fuse, a cooling fan, a guide pipe and a second photoelectric sensor. By means of the rotary wire changing part, wires can be changed at any time, the colors of the wires can be changed, accurate wire continuing can be achieved, the wires are prevented from being broken midway, meanwhile, waste of consumables is reduced, cost is saved, and the wire changing efficiency is improved. 本发明公开了一种可自动更换3D耗材丝的换丝机构。本发明包括换丝结构、夹紧送丝结构和熔断检测结构。所述换丝结构包括旋转换丝零件、第一光电传感器和旋转电机。所述夹紧送丝结构包括齿轮组、槽轮、齿轮齿条组、挤出电机和夹紧舵机。所述熔断检测结