Electrode Terminal Molding to Prevent Resin on Connection Surfaces
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During the manufacturing process of electric storage devices, component tolerances can lead to resin adhering to the central part of the electrode terminal's connection surface, requiring a resin removal process and reducing manufacturing efficiency.
Innovation Solution
A manufacturing method that involves preparing a case part with a penetration hole, inserting an electrode terminal into the hole, and using a metal mold with a protruding part to control resin flow, preventing resin from adhering to the central part of the electrode terminal's connection surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If component tolerance is increased during injection molding, then manufacturing ease is improved, but resin adheres to the connection surface requiring removal processes
Solution Approach 1:
The protruding part is provided on the metal mold before injection molding to preemptively control resin flow and prevent adhesion to the connection surface, eliminating the need for subsequent resin removal processes
Solution Approach 2:
The protruding part acts as an intermediary structure between the metal mold and the electrode terminal, mediating resin flow to prevent direct contact between resin and the connection surface
2Device complexity
If resin flow is not controlled, then injection molding is simpler, but resin adheres to the central part of the connection surface
Solution Approach 1:
The metal mold cavity surface is segmented into different functional zones: a first cavity surface for general molding, and a protruding part forming a second cavity surface that specifically controls resin flow near the connection surface area
Solution Approach 2:
The protruding part creates a localized region with different resin flow characteristics, preventing resin adhesion specifically at the connection surface while maintaining normal molding in other areas
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces the frequency of resin removal processes, enhancing the manufacturing efficiency of electric storage devices by preventing resin adherence to the electrode terminal's connection surface.
Implementation Method 1
an injection amount of the resin to the inside cavity is controlled to make the protruding part dam the resin having reached to a position between the peripheral edge part of the connection surface and the first surface through a resin flow channel between the side surface and the third surface
Data Source
AI summary
A herein disclosed manufacturing method includes preparing a case part that comprises a penetration hole, inserting an electrode terminal into the penetration hole, arranging the case part and the electrode terminal in an inside cavity of a metal mold, and injecting a resin into the inside cavity of the metal mold. Then, a cavity surface of the metal mold includes a protruding part configured to protrude from the first surface toward a peripheral edge part of the connection surface. Then, at the injection of the resin, an injection amount of the resin to the inside cavity is controlled to make the protruding part dam the resin flowing into a resin flow channel. By doing this, it is possible to suppress the resin from adhering to the connection surface.