Perforated Deformable Mold Body for Uniform Pre-Pressing
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Solution Overview
Problem
Current methods for producing molded parts from fiber-containing materials face challenges in achieving high-quality products with uniform moisture content and thickness, often resulting in preforms with different drying rates and potential damage during hot pressing due to uneven pressure distribution and moisture content.
Innovation Solution
A mold body for a pre-pressing tool made of deformable material with a perforated design, allowing gas to penetrate and distribute pressure evenly, and a pre-pressing tool with a support structure and detachable mold body to ensure uniform deformation and reduce maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional solid mold bodies are used for pressing preforms, then structural strength is maintained, but pressure distribution becomes uneven causing non-uniform thickness and moisture content
Solution Approach 1:
The mold body is designed with a porous structure that allows gas to penetrate through during the pressing process. This porous design enables uniform pressure distribution across the preform surface while maintaining adequate structural strength, resolving the contradiction between manufacturing precision and structural strength.
2Productivity
If high pressure is applied during pressing to improve density, then production speed increases, but preforms with high moisture content suffer damage
Solution Approach 1:
The mold body is pre-heated before the pressing process begins. This preliminary heating action prepares the mold to handle high-moisture preforms by creating a thermal environment that prevents damage during subsequent high-pressure pressing, thereby enabling faster production without compromising preform integrity.
Solution Approach 2:
The porous structure of the mold body allows moisture vapor to escape during pressing, preventing pressure buildup that would damage preforms with high moisture content. This enables the application of higher pressures for increased productivity without causing harm to the preforms.
3Ease of repair
If mold bodies are designed for easy replacement to reduce maintenance costs, then device complexity increases, but production continuity is improved
Solution Approach 1:
The pressing tool is divided into separate modular components, with the mold body as a distinct replaceable element. This segmentation allows the mold body to be easily removed and replaced without affecting other tool components, reducing maintenance costs while the modular design manages device complexity through standardization.
Solution Approach 2:
The mold body is designed as a universal component that can be replaced with different models to produce various preform types. This multi-functionality approach reduces the need for multiple specialized tools, lowering overall maintenance costs while the standardized interface manages device complexity.
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
The solution enables better drainage and uniform deformation of preforms, preventing uneven thickness and moisture content, reducing the risk of preform adherence and damage, and minimizing maintenance and operational costs by allowing for easy replacement of mold bodies.
Implementation Method 1
A mold body for a pre-pressing tool made of deformable material with a perforated design, allowing gas to penetrate and distribute pressure evenly
Implementation Method 2
a pre-pressing tool having at least one mold body for pressing three-dimensional preforms made of a fiber-containing material
Implementation Method 3
The solution enables better drainage and uniform deformation of preforms
Data Source
AI summary
The present disclosure relates to a molding station a mold body for a pre-pressing tool that is utilized for pressing three-dimensional preforms made of a fiber-containing material. The mold body includes a deformable material and is perforated in some portions.