公开(公告)号：EP4393680A1

公开(公告)日：2024-07-03

申请号：EP23866614.3

申请日：2023-02-20

申请人： Nanjing University of Aeronautics and Astronautics

发明人： FAN, Congze ,  SHAN, Zhongde ,  LIU, Kai ,  CHEN, Yiwei ,  ZHENG, Jinghua ,  SONG, Wenzhe

IPC分类号： B29C64/171 ,  B33Y10/00

CPC分类号： Y02P10/25 ,  B29C64/227 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y40/00 ,  B29C64/171 ,  B33Y10/00 ,  B29C64/295 ,  B29C64/20 ,  B29C64/30 ,  B29C64/321 ,  B29C64/314

摘要： The present invention discloses an additive manufacturing device for an aerospace truss. The entire device includes five units: 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.

公开(公告)号：EP4393682A1

公开(公告)日：2024-07-03

申请号：EP23866635.8

申请日：2023-02-20

申请人： Nanjing University of Aeronautics and Astronautics

发明人： SONG, Wenzhe ,  FAN, Congze ,  SHAN, Zhongde ,  ZHENG, Jinghua ,  CHEN, Yiwei ,  LUO, Linlin

IPC分类号： B29C64/321 ,  B29C64/118 ,  B33Y40/00

CPC分类号： Y02P10/25

摘要： Disclosed in the present invention is a wire feeding mechanism suitable for fused deposition Additive Manufacturing (AM) of a flexible wire, including a support housing. A melting nozzle is arranged at the lower end of the support housing, a hook is connected to the inner wall of the top end of the support housing, a connecting rod is connected to the inner wall of one side of the support housing, a wire drawing mechanism is connected to one end of the connecting rod, the wire drawing mechanism is located at the lower end of the hook, a limiting mechanism and a wire guide mechanism are connected to the inner wall of one side of the support housing, the limiting mechanism is located at the lower end of the wire drawing mechanism, the wire guide mechanism is located at the lower end of the limiting mechanism, the wire drawing mechanism includes a support seat, the support seat is connected to the connecting rod, an electric chute is arranged in the inner wall of the top end of the support seat, an electric sliding block is movably connected to the inner wall of the electric chute in a clamped manner, and a sixth bracket is connected to the outer wall of the top end of the electric chute. The wire feeding mechanism suitable for fused deposition AM of a flexible wire disclosed by the invention has the effect of reducing the risk of caking at a joint between a wire and the hook.