公开(公告)号：US11911961B1

公开(公告)日：2024-02-27

申请号：US18242529

申请日：2023-09-06

Applicant: NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

Inventor： Zhongde Shan ,  Congze Fan ,  Jinghua Zheng ,  Wenzhe Song ,  Yiwei Chen ,  Kai Liu

IPC: B29C64/218 ,  B29C64/236 ,  B29C64/295 ,  B29L31/30 ,  B33Y30/00 ,  B33Y80/00

CPC classification number: B29C64/218 ,  B29C64/236 ,  B29C64/295 ,  B29L2031/3097 ,  B33Y30/00 ,  B33Y80/00

Abstract: An additive manufacturing device for an aerospace truss includes a raw material input unit, a longitudinal beam forming unit, a longitudinal beam traction unit, a cross beam forming unit and a truss support unit. The raw material input unit stores pre-impregnated wires and pre-impregnated tapes, and a motor drives rollers to convey the pre-impregnated wires and the pre-impregnated tapes forward; the longitudinal beam forming unit is composed of three sets of forming molds, and the pre-impregnated tapes form V-shaped longitudinal beams through heating molds; a stepper motor used in the longitudinal beam traction unit drives three sets of roller traction devices through steering gears to pull formed longitudinal beams; the cross beam forming unit is composed of a motion module and a printing module, and a truss cross beam is printed through a 3D printing method of molten deposition.