公开(公告)号：US11584055B2

公开(公告)日：2023-02-21

申请号：US16657746

申请日：2019-10-18

Applicant: OLYMPUS CORPORATION

Inventor： Masaki Otsuka

IPC: B29C45/26 ,  B29C45/04 ,  B29C45/16 ,  B32B1/00 ,  B32B7/023 ,  B32B27/08 ,  G02B1/04 ,  B29L31/34

Abstract: A two-color molding die includes: a fixed primary die; a fixed secondary die; and a movable die. The fixed primary die includes a first concave portion. The movable die includes a second concave portion facing the first concave portion, and a core pin that protrudes from a base end surface of the second concave portion toward a base end surface of the first concave portion to form a tubular primary molding cavity between the core pin and the first concave portion and the second concave portion. The fixed secondary die includes a third concave portion configured to form a concave secondary molding cavity.

公开(公告)号：US12256896B2

公开(公告)日：2025-03-25

申请号：US17735262

申请日：2022-05-03

Applicant: OLYMPUS CORPORATION

Inventor： Masaki Otsuka

IPC: A61B1/00 ,  A61B1/018 ,  A61B1/06

Abstract: An endoscope distal end frame includes: a holder including a first through hole, the holder being a primary molding made of a colored resin; and a distal end part including a second through hole that is concentric with the first through hole, the distal end part being a secondary molding made of a transparent resin layered on the holder. The first through hole has a diameter larger than a diameter of the second through hole.

公开(公告)号：US10022926B2

公开(公告)日：2018-07-17

申请号：US14996044

申请日：2016-01-14

Applicant: OLYMPUS CORPORATION

Inventor： Masaki Otsuka ,  Koki Iwasawa ,  Shigeya Sugata ,  Yoshitaka Otsuka

IPC: B29D11/00 ,  B29C45/73 ,  B29C45/27 ,  B29C45/00 ,  B29C45/18

Abstract: An injection molding method includes a supply step of simultaneously supplying molten resins to a cavity portion from two gate portions and an associating step of associating the molten resins supplied from the two gate portions in a central part of the cavity portion. The supply step supplies the molten resins to the cavity portion from the two gate portions which substantially face each other around the cavity portion. The associating step includes at least one of a first step in the supply step of simultaneously starting the supply of the molten resins to the cavity portion from the two gate portions, and a second step in the supply step of simultaneously starting the injection of the molten resins into the cavity portion from the two gate portions at the same injection rate.