Composite Mold Barrier Prevents Nut Inflow
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Solution Overview
Problem
The existing composite material panel forming process faces issues with the composite material molding source and sealing material getting stuck in the nut, leading to quality problems and decreased work efficiency due to manual replacement and potential detachment of sealing materials.
Innovation Solution
A composite material parts forming apparatus is designed with a core mounted in the press mold, an insert pin connected to the core to secure the nut, and a barrier that protrudes along the edge of the core. A sealing member is fixed between the core and the insert pin, preventing the composite material molding source from inflowing into the nut during the molding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing material (O-ring) is applied between the mold pin and the nut, then the sealing between the mold pin and the nut is improved, but the work efficiency decreases and quality problems occur due to manual replacement and potential detachment
Solution Approach 1:
The sealing function is extracted from a separate O-ring component and integrated into the barrier structure that protrudes from the core. The barrier itself forms the sealing interface with the nut, eliminating the need for separate sealing materials that require manual installation and replacement.
Solution Approach 2:
The sealing function is merged with the barrier structure. The barrier that prevents molding source inflow also serves as the sealing element against the nut, combining two functions (inflow prevention and sealing) into a single integrated structure.
2Reliability
If a sealing material (O-ring) is applied between the mold pin and the nut, then the sealing between the mold pin and the nut is improved, but quality problems occur due to sealing material detachment and contamination
Solution Approach 1:
The separate sealing material (O-ring) is removed from the system. Instead, the barrier structure itself creates the sealing interface directly with the nut through its geometric shape, eliminating the source of detachment and contamination problems.
Solution Approach 2:
The design eliminates disposable or temporary sealing materials that need frequent replacement. The barrier structure is a permanent, durable integral part of the core that provides continuous sealing without degradation or detachment.
3Manufacturing precision
If the nut is not in close contact with the mold pin or there is no sealing between the mold pin and the nut, then the molding source may inflow into the interior of the nut and harden, but adding sealing material increases device complexity
Solution Approach 1:
The sealing function is merged with the barrier structure. The barrier that prevents molding source inflow also serves as the sealing element against the nut, combining two functions (inflow prevention and sealing) into a single integrated structure without adding separate components.
Solution Approach 2:
The barrier structure performs multiple functions simultaneously: it prevents molding source inflow into the nut cavity and creates the sealing interface with the nut. This multi-functional design eliminates the need for separate sealing components.
Data Source
AI summary
An embodiment composite material parts forming apparatus includes a core mounted on an upper mold of a press mold, an insert pin connected to the core and configured to secure a nut, and a barrier which protrudes along an edge of the core with the insert pin disposed inside.


