公开(公告)号：US10751923B2

公开(公告)日：2020-08-25

申请号：US15534529

申请日：2015-09-23

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Hirokazu Kurono ,  Hironori Uegaki ,  Toshitaka Honda ,  Hiroyuki Hazama ,  Kuniharu Tanaka ,  Hiroyuki Kawaji

IPC: B29C45/14 ,  H01T21/02 ,  H01T13/20 ,  B28B7/34 ,  B28B13/06 ,  B28B7/18 ,  B28B7/00 ,  B28B1/24 ,  H01T13/34 ,  H01T13/39

Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.

公开(公告)号：US20170326765A1

公开(公告)日：2017-11-16

申请号：US15534529

申请日：2015-09-23

Applicant: NGK Spark Plug Co., Ltd.

Inventor： Hirokazu Kurono ,  Hironori Uegaki ,  Toshitaka Honda ,  Hiroyuki Hazama ,  Kuniharu Tanaka ,  Hiroyuki Kawaji

IPC: B29C45/14 ,  H01T21/02 ,  H01T13/39 ,  B28B1/24 ,  H01T13/34

CPC classification number: B29C45/14655 ,  B28B1/24 ,  B28B7/0038 ,  B28B7/18 ,  B28B7/346 ,  B28B13/06 ,  H01T13/20 ,  H01T13/34 ,  H01T13/39 ,  H01T21/02

Abstract: An employed rear mold is comprised of a plurality of mold pieces. The plurality of mold pieces include a first mold piece which forms a first partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface, and a second mold piece which is located axially forward of the first mold piece and forms a second partial internal surface of the internal surface of the rear mold along the entire circumference of the internal surface. Releasing the molded body includes starting to move the first mold piece rearward in relation to a rear molded portion, and, subsequently to starting to move the first mold piece, starting to move the second mold piece rearward in relation to the rear molded portion, thereby disassembling the rear mold into the plurality of mold pieces.