公开(公告)号：US20240173917A1

公开(公告)日：2024-05-30

申请号：US18167092

申请日：2023-02-10

申请人： HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Chunze Yan ,  Lei Yang ,  Wenbo Wang ,  Zhanpeng Pi ,  Bin Su ,  Zhigang Xia ,  Yusheng Shi

IPC分类号： B29C64/245 ,  B29C64/165 ,  B29C64/209 ,  B29C64/236 ,  B29C64/241 ,  B33Y10/00 ,  B33Y30/00

CPC分类号： B29C64/245 ,  B29C64/165 ,  B29C64/209 ,  B29C64/236 ,  B29C64/241 ,  B33Y10/00 ,  B33Y30/00

摘要： A lower surface of the printing platform is provided with a displacement device, and the displacement device is used to rotate the printing platform horizontally and adjust a pitch angle of the printing platform. The additive device is located above the printing platform and is connected to one end of the robotic arm, and the additive device is provided with a pressing roller. The robotic arm includes rotating joints used to drive the additive device to print and melt a fiber tow on the printing platform according to a predetermined path. The fiber pulling device is disposed on the printing platform to grab the reinforced fiber and make it cross-weave with the horizontally printed fiber tow on the horizontal plane. When working, the pressing roller is always perpendicular to the printing platform to press the melted fiber tow and the reinforced fiber cross-woven with the fiber tow.

公开(公告)号：US10821675B2

公开(公告)日：2020-11-03

申请号：US16357791

申请日：2019-03-19

申请人： Huazhong University of Science and Technology

发明人： Shifeng Wen ,  Peng Chen ,  Chunze Yan ,  Lei Yang ,  Zhaoqing Li ,  Hongzhi Wu ,  Yusheng Shi

IPC分类号： B29C64/153 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/245 ,  B29K71/00

摘要： The present disclosure belongs to the technical field of advanced manufacturing auxiliary equipment, and discloses an independently temperature-controlled high-temperature selective laser sintering frame structure, comprising a galvanometric laser scanning system, a powder feeding chamber, a forming chamber and a heat-insulating composite plate, and targeted optimization design is performed on the respective functional components. According to the invention, the independently temperature-controlled frame structure can simultaneously ensure the uniformity of the powder preheating temperature field of the powder feeding chamber platform and the uniformity of the processing temperature field of the forming chamber platform, so that powder on the powder feeding chamber platform can reach the sinterable temperature before being conveyed, and conveyance of cold powder to the sintered melt is avoided, thereby reducing the possibility of warpage of the parts while reducing actual sintering delay time and improving actual sintering efficiency. The independently temperature-controlled frame structure of the present disclosure is particularly suitable for high-temperature laser sintering of high-performance polymers such as polyaryletherketones and aromatic polyamides at 400° C.