Title:
METHOD FOR MOLDING EXTENSION MEMBER
Document Type and Number:
WIPO Patent Application WO/2024/048318
Kind Code:
A1
Abstract:
The present invention relates to a method for injection molding an extension member provided in a vehicle lamp, in particular to a method for injection molding an extension member including a bridge footing portion. Provided is a method for injection molding an extension member, the extension member being provided in a vehicle lamp which accommodates a plurality of light-emitting optical units, having an opening formed inside, including a bridge footing portion dividing the opening into multiple parts, and shielding at least some of the optical units from the outside. A die for molding the extension member is provided with at least a pair of gates in a position facing a cavity for forming the bridge footing portion. An adjustment is made to guide the position of a weld line formed on the bridge footing portion to a desired area by setting different gate open start times for the pair of gates. In this way, development of a weld line is inhibited.
Inventors:
MATSUNAGA KENICHI (JP)
Application Number:
PCT/JP2023/029788
Publication Date:
March 07, 2024
Filing Date:
August 18, 2023
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
B29C45/00; B29C45/28
Foreign References:
| JP2021146606A | 2021-09-27 | |||
| JP2014200980A | 2014-10-27 | |||
| CN108943637A | 2018-12-07 |
Attorney, Agent or Firm:
FUJIOKA, Takahiro (JP)
Download PDF: