Movable Forming Mould for Deep-Drawn Cellulose Product Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing forming moulds for cellulose products face challenges in efficiently inserting and removing air-formed cellulose blank structures, particularly for deep drawn products, and struggle with products adhering to the mould after formation, limiting mechanical and aesthetic properties.
Innovation Solution
A forming mould with movable elements that can transition between extended and retracted states, facilitating insertion and ejection of cellulose products, and incorporating actuators for efficient displacement, allowing for the formation of products with negative draft angles and undercut sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional stationary mould parts are used, then the mould structure is simple, but insertion and removal of cellulose blank structures is inefficient especially for deep drawn products
Solution Approach 1:
The patent applies the dynamics principle by making the mould parts movable relative to each other. The first and second mould parts can move along the pressing direction to facilitate insertion of the cellulose blank structure and removal of the formed product. This dynamic capability significantly improves insertion and removal efficiency, especially for deep drawn products, while maintaining relatively simple overall structure.
2Manufacturing precision
If high forming pressure and temperature are applied for dry-forming, then product formation is achieved, but products stick onto mould parts after forming
Solution Approach 1:
The movable mould parts allow the second mould part to move away from the formed product after forming, creating space for easy removal. This dynamic separation prevents product adhesion to the mould parts, solving the problem where high forming pressure and temperature cause products to stick onto stationary mould surfaces.
Solution Approach 2:
The mould is divided into multiple movable parts (first mould part and second mould part) that can independently move relative to each other. This segmentation allows the forming cavity to be opened and closed independently, enabling controlled formation followed by easy product removal without adhesion issues.
3Adaptability or versatility
If complex product shapes with negative draft angles are formed, then product versatility is improved, but insertion of cellulose blank structure becomes difficult
Solution Approach 1:
The movable mould parts enable the formation of complex shapes with negative draft angles by allowing the mould cavity to dynamically adapt during insertion and forming. The first and second mould parts can move relative to each other to accommodate complex geometries, making insertion of the cellulose blank structure easier while maintaining the ability to form versatile product shapes.
Data Source
AI summary
A forming mould for forming three-dimensional cellulose products from an air-formed cellulose blank structure. The forming mould includes a first mould part and a second mould part. The first mould part and the second mould part are movable relative to each other in a pressing direction and arranged to be pressed relative to each other during forming of the cellulose products. The first mould part includes a movable element displaceable between an extended state and a retracted state, where the movable element in the extended state is arranged as a protruding body extending in the pressing direction relative to a surrounding pressing surface of the first mould part. The movable element is in the retracted state arranged as a pressing surface cooperating with the surrounding pressing surface for forming the cellulose products.