公开(公告)号：US11305456B2

公开(公告)日：2022-04-19

申请号：US16655215

申请日：2019-10-16

申请人： Huazhong University of Science and Technology

发明人： Yusheng Shi ,  Chunze Yan ,  Zhaoqing Li ,  Peng Chen ,  Zhufeng Liu ,  Jiamin Wu ,  Shifeng Wen ,  Chenhui Li ,  Lichao Zhang

IPC分类号： B28B1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B29C64/153 ,  B29C64/232 ,  B29C64/245 ,  B29C64/236 ,  B29C64/35 ,  B29C64/25 ,  C23C16/24

摘要： A selective laser sintering (SLS) device. The SLS device includes a laser forming unit, a support platform and a driving mechanism. The support platform is configured to support a plurality of raw materials for additive manufacturing of an object including a plurality of sections. The laser forming unit is disposed on the support platform and is configured to lay powders on a surface of each section of the object and sinter the powders. The driving mechanism is disposed under the laser forming unit and includes a vertical driving mechanism and a horizontal driving mechanism. The vertical driving mechanism is connected to the laser forming unit and configured to lift the laser forming unit layer by layer. The horizontal driving mechanism is configured to drive the laser forming unit to move in a horizontal direction with respect to the support platform.

公开(公告)号：US11110663B2

公开(公告)日：2021-09-07

申请号：US16248296

申请日：2019-01-15

申请人： Huazhong University of Science and Technology

发明人： Chunze Yan ,  Hongzhi Wu ,  Yusheng Shi ,  Shifeng Wen ,  Lichao Zhang

IPC分类号： B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/118 ,  B29C64/209 ,  B29C64/268

摘要： The invention belongs to the field of filament additive manufacturing, and discloses a polymer multi-material high-flexibility laser additive manufacturing system and a method thereof. The system comprises a first robot arm, a second robot arm, a positioner, a rotational extrusion nozzle in which a plurality of extrusion modules are disposed and a laser, each extrusion module is used for extruding one kind of filament, and the rotational extrusion nozzle is connected with the first robot which drives the rotational extrusion nozzle to move according to a preset trajectory; the laser is connected with the second robot, and is used for emitting a laser to fuse the filament extruded from the rotational extrusion nozzle, and through the cooperative motion of the first robot and the second robot, the extrusion and fusion of the filament are performed synchronously; the positioner serves as a forming mesa, and the rotation of the positioner cooperates with the motions of the two robots. With the present invention, problems such as easy blocking and short service life of the extrusion nozzle in the FDM forming are solved, thereby ensuring high flexibility of the manufacturing system and achieving the extrusion forming of the multi-material filaments.