Optical Connecting Component Insert Molding Positioning
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Solution Overview
Problem
Existing methods for producing optical connecting components face challenges in accurately forming three-dimensional electric wiring, which is essential for high-speed and high-capacity optical interconnections, due to difficulties in precisely positioning and molding lead frames with continuous electric wiring on molded members.
Innovation Solution
The method involves using a lead frame with positioning holes and a die equipped with positioning projections to ensure accurate positioning during insert molding, allowing for precise three-dimensional electric wiring by fitting the positioning projection into the positioning hole and applying tension to maintain the lead frame's position during resin injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If continuous three-dimensional electric wiring is formed on the molded member, then the degree of freedom of connecting positions is improved, but the manufacturing precision and ease of forming deteriorate
Solution Approach 1:
The patent divides the electric wiring into two segments: a lead pattern formed on the molded member surface and a lead frame insert-molded into the molded member. This segmentation allows each component to be manufactured separately using conventional techniques, avoiding the difficulty of forming continuous three-dimensional wiring while still achieving flexible electrical connections between the optical fiber and photoelectric conversion unit.
2Manufacturing precision
If positioning is performed during insert molding, then the positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent employs self-positioning features where the lead frame itself contains positioning holes that align with positioning projections on the molded member. This self-service positioning mechanism achieves high positioning accuracy without requiring external positioning devices or complex positioning systems, as the lead frame autonomously locates itself during the insert molding process.
Data Source
AI summary
A method of producing an optical connecting component in which three-dimensional electric wiring can be easily and accurately performed, and the optical connecting component are provided.A positioning projection 58 disposed on a second slide core 56 for positioning a core pin 54 disposed on a first slide core 55 is fitted in a positioning hole 34 disposed in a lead frame 30. The lead frame 30 is disposed in the vicinity of a lead pattern 31, so that the lead pattern 31 can be insert-molded while being positioned in an accurate position with respect to the second slide core 56. Therefore, it is possible to easily perform three-dimensional electric wiring in an accurate position.