Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INJECTION MOLDING MOLD, OPTIC ELEMENT PRODUCTION METHOD AND OPTIC ELEMENT
Document Type and Number:
Japanese Patent JP2016129971
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To regulate a relative position and relative movement of a movable mold and a fixed mold, in mold opening operation and in mold release operation, and prevent damage of an optic element which is a molded product.SOLUTION: A cavity for molding a molded product of an optic element (17) is defined by a movable mirror face piece 6 and a movable holding piece 7 of a movable mold, and a fixed mirror face piece 1 and a fixed holding piece 2 of a fixed mold. The movable mold comprises an ejector pin 9 as an extrusion member for releasing the molded optic element (17). The fixed mold comprises a sprue 13 for injecting molten resin, which is linearly disposed along a mold opening direction of the movable mold. As a fitting structure for limiting the relative movement of the movable mold and the fixed mold, in the mold opening direction, a straight pin 5 is disposed on the fixed holding piece 2, and a ball retainer 11 is disposed on the movable holding piece 7. The fitting structures can fit each other by irregular structures so as to protrude and retreat each other, and maintain a fitting state until the optic element is released from the movable mold.SELECTED DRAWING: Figure 1

Inventors:
BABA AKIHIRO
Application Number:
JP2015004885A
Publication Date:
July 21, 2016
Filing Date:
January 14, 2015
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CANON KK
International Classes:
B29C45/40; B29C45/00
Attorney, Agent or Firm:
近島 一夫
大田 隆史