Injection Mold Fixing Member for Battery Thickness Variation
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Solution Overview
Problem
Existing injection molding methods for covering battery side surfaces with resin face challenges due to variations in battery thickness caused by manufacturing tolerances, requiring dedicated molds for different battery sizes and resulting in reduced productivity.
Innovation Solution
A mold and injection molding method that includes a fixing member with a movable portion and auxiliary portion, allowing the battery to be fixed with controlled pressure and enabling the adjustment of resin injection based on the battery's thickness, thereby accommodating variations in battery dimensions without the need for dedicated molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated mold is prepared for each battery size, then the battery can be properly fixed in the cavity, but the device complexity increases and productivity decreases
Solution Approach 1:
The mold cavity is designed with a standardized size that can accommodate multiple battery types through the use of adjustable positioning members and flexible fixing members, allowing one mold to serve multiple functions for different battery dimensions
Solution Approach 2:
The fixing member includes a movable portion that can be dynamically adjusted to adapt to different battery thicknesses, enabling the same mold to properly fix various battery sizes without requiring multiple dedicated molds
2Device complexity
If the cavity size is standardized, then device complexity is reduced, but the battery cannot be properly fixed due to thickness variations
Solution Approach 1:
The fixing member incorporates a movable portion that can dynamically adjust its position to compensate for variations in battery thickness, ensuring reliable fixing while maintaining a standardized cavity size
Solution Approach 2:
The position of the fixing member can be changed according to the actual battery thickness, allowing the same mold to adapt to different battery specifications and maintain proper fixing reliability
3Reliability
If the fixing pressure is increased, then the battery can be securely fixed, but the battery may be damaged due to thickness variations
Solution Approach 1:
The movable portion of the fixing member allows the fixing pressure to be dynamically adjusted based on the actual battery thickness, ensuring secure fixing without applying excessive force that could damage the battery
Solution Approach 2:
The pressing force applied by the fixing member can be varied according to the battery thickness, enabling reliable fixing while preventing damage to batteries with different thickness specifications
Data Source
AI summary
To provide an injection molding die that can improve the productivity of the process of covering the side surface of the battery with resin.A mold, comprising: a space capable of arranging a first end portion of a battery; and a fixing member capable of fixing the battery in a condition where the first end portion of the battery is arranged in a space; wherein the space is formed so that the second end portion of the battery jumps out of the space when the first end portion of the battery is arranged in the space; the fixing member has a fixed portion and a movable portion, the fixed portion is configured to support a first end surface of the battery; the movable portion is movable in a thickness direction; the second end surface of the battery can be pressed, and the fixing member can fix the battery by sandwiching the first end surface and the second end surface of the battery with the fixed portion and the movable portion; and the pressure applied to the battery from the movable portion is set to be equal to or less than a predetermined threshold value.