Oral Care Molded Article With Penetration Structure for Alignment Stability
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Solution Overview
Problem
In multi-colored molded articles for oral care products, the stability of the secondary molded part's position with respect to the primary molded part is not adequately maintained, leading to potential misalignment and instability.
Innovation Solution
The design incorporates a primary molded part with an exposed structure that allows forces from the secondary molded part to be transferred through penetration parts, ensuring stable positioning by using a pressurized structure and ejector pins during the molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a secondary molded part is added to a primary molded part to create a multi-colored molded article, then the product functionality and appearance are improved, but the position stability of the secondary molded part with respect to the primary molded part deteriorates
Solution Approach 1:
The penetration part is embedded within the primary molded part, creating a nested structure where the secondary molded part can be positioned and secured relative to the primary molded part. This nesting mechanism ensures that the secondary molded part maintains a stable position while still allowing for the multi-colored and functional design requirements.
2Ease of manufacture
If the secondary molded part is molded separately and then combined with the primary molded part, then the manufacturing flexibility is improved, but the alignment precision between the two parts deteriorates
Solution Approach 1:
The penetration part is pre-formed within the primary molded part before the secondary molded part is molded. This preliminary action creates a pre-positioned structure that guides and ensures precise alignment when the secondary molded part is combined with the primary molded part, thus maintaining alignment precision while preserving manufacturing flexibility.
3Strength
If penetration parts are provided in the primary molded part to transfer force, then the structural integrity is improved, but the device complexity increases
Solution Approach 1:
The penetration part serves multiple functions: it acts as a structural element to transfer force from the secondary molded part to the primary molded part, provides a positioning mechanism to maintain alignment, and integrates into the overall design without requiring separate components. This multi-functionality improves structural integrity while minimizing the increase in device complexity.
Data Source
AI summary
A molded article (20) for an oral care product includes a primary molded part (P) that includes a covering target part (PC), a secondary molded part (Q) that includes a covering part (Q40) covering the covering target part (PC), and an exposed structure (500) that includes one or a plurality of penetration parts (P100) penetrating the covering part (Q40). The penetration part (P100) includes an exposed surface exposed with respect to the covering part (Q40). The penetration part (P100) is provided in the primary molded part (P) such that a force received by the primary molded part (P) from a resin material corresponding to the secondary molded part (Q) so as to deform the primary molded part (P) in a secondary molding step of molding the secondary molded part (Q) is able to be transferred to a mold through the exposed surface.