公开(公告)号：US11607831B2

公开(公告)日：2023-03-21

申请号：US17266767

申请日：2019-03-28

申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.

发明人： Yuichi Sakurada ,  Nanae Naito ,  Keita Arai ,  Hozumi Yoda ,  Hirofumi Murata

IPC分类号： B29C45/74 ,  B29C45/18 ,  B29C45/62

摘要： An injection device has a screw disposed in a heating cylinder so as to be rotatable and movable in an axial direction. An injection stage supports the heating cylinder. A material supplying unit supplies a resin material to the heating cylinder. A material introducing member is disposed between the material supplying unit and the heating cylinder and introduces the resin material from the material supplying unit to the heating cylinder, The material introducing member has a cylindrical portion fitted in a vertical hole provided in the injection stage, and a lower part of the cylindrical portion is in abutting contact with the heating cylinder. A heat medium passage extends inside a sidewall of the cylindrical portion for flowing therethrough a temperature-controlled heat medium, and a heat-insulating air space is formed between an outer circumferential surface of the cylindrical portion and a circumferential surface of the vertical hole.