公开(公告)号：US12122081B2

公开(公告)日：2024-10-22

申请号：US18424721

申请日：2024-01-26

申请人： SEIKO EPSON CORPORATION

发明人： Asami Uramoto ,  Hidenobu Maruyama ,  Kenta Anegawa

IPC分类号： B29C45/46 ,  B29C45/47 ,  B29C45/60 ,  B29C45/74 ,  B29C45/17 ,  B29K21/00 ,  B29K105/00

CPC分类号： B29C45/464 ,  B29C45/47 ,  B29C45/60 ,  B29C45/74 ,  B29C2045/1792 ,  B29K2021/00 ,  B29K2105/251

摘要： A plasticizing device includes: a flat screw having a groove formation surface in which a spiral groove is formed and configured to rotate about a rotation axis by a motor; a barrel having a facing surface facing the groove formation surface in a direction of the rotation axis; a heater configured to heat the material supplied between the groove formation surface and the facing surface; and a screw case accommodating the flat screw and having a supply port through which the material is supplied to the groove. The flat screw includes a first side surface in which an introduction port for introducing the material from the supply port into the groove is partially formed, and a second side surface provided on a side farther away from the barrel than the first side surface. A first distance which is a shortest distance between the first side surface and the screw case is larger than a second distance which is a shortest distance between the second side surface and the screw case, and a recessed portion is formed in the second side surface.