公开(公告)号：US20230382013A1

公开(公告)日：2023-11-30

申请号：US18034168

申请日：2021-05-27

申请人： THE JAPAN STEEL WORKS, LTD.

发明人： Tetsuya KOIWA ,  Hiroyuki KAWANO ,  Makoto ISHIKAWA ,  Soichiro MATSUDA ,  Mutsushi HARAWAKI

IPC分类号： B29B9/06

CPC分类号： B29B9/06

摘要： A technique of controlling a cutter-blade pressing force to be a constant force even in employment of a configuration improving a production efficiency of a pellet is provided. In a resin cutter, a controller configured to control the cutter-blade pressing force is configured to variably control each of a revolution number of a rotation shaft attached to a cutter head, a magnitude of a rotation-shaft forward force Ff and a magnitude of a rotation-shaft backward force Fb so that the cutter-blade pressing force is constant.

公开(公告)号：US20240157623A1

公开(公告)日：2024-05-16

申请号：US18282187

申请日：2021-11-01

申请人： THE JAPAN STEEL WORKS, LTD.

发明人： Naoki UEDA ,  Tomonori HASHIMOTO ,  Hiroyuki KAWANO ,  Soichiro MATSUDA ,  Fumiya YAMABE

IPC分类号： B29C48/30 ,  B29B9/06 ,  B29C48/00 ,  B33Y10/00 ,  B33Y80/00

CPC分类号： B29C48/3001 ,  B29B9/065 ,  B29C48/0022 ,  B33Y10/00 ,  B33Y80/00

摘要： A die 6 includes a central member 6a, an injection hole formed from a surface of the central member 6a to an inside, a plurality of nozzles formed from an opposite surface of the central member 6a to the inside and connected to the injection hole, a heat source provided inside the central member 6a, and a plurality of heat insulating portions 31a provided inside the central member 6a. The plurality of heat insulating portions 31a extend from an outer peripheral side of the central member 6a toward an inner side of the central member 6a in plan view.

公开(公告)号：US20220410459A1

公开(公告)日：2022-12-29

申请号：US17770619

申请日：2019-10-21

申请人： THE JAPAN STEEL WORKS, LTD.

发明人： Soichiro MATSUDA ,  Hiroyuki KAWANO ,  Tomonori HASHIMOTO ,  Fumiya YAMABE ,  Naoki UEDA

IPC分类号： B29C48/345 ,  B29C48/88 ,  B29C48/86 ,  B29C48/30 ,  B29C48/05 ,  B29C48/00

摘要： A performance of a die is improved. An injection hole IH, a nozzle NZa and a nozzle NZb are formed in a center member DIa of a die DI to extend from an extrusion surface ES to an injection surface IS. A heat source HT and a plurality of heat insulating layers HI1 are arranged inside the center member DIa. One of the plurality of heat insulating layers HI1 is adjacent to the nozzle Nzb and is closer to the extrusion surface ES than the heat source HT. The other of the plurality of heat insulating layers HI1 extends in a direction from the extrusion surface ES toward the injection surface IS at a position being farther from the nozzle NZb than the heat source HT.