Adaptive Mold Using Thermoform Polymer for Multi-Part Production
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Solution Overview
Problem
The high cost and space requirements of maintaining specific molds for each unique component or size in a manufacturing environment, leading to increased storage burdens and acquisition expenses.
Innovation Solution
An adaptive mold with a thermoform polymer molding surface that can change shape based on temperature, allowing a single mold to be used for multiple components by forming different mold cavities as needed, utilizing shape memory polymers or thermoplastic materials that can be reformed to accommodate various part shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple specific molds are maintained for each unique component or size, then manufacturing precision and reliability are improved, but storage space requirements and acquisition costs increase
Solution Approach 1:
The mold includes a thermoform material that can be heated to a transition temperature and formed into different mold cavities corresponding to different component shapes and sizes. This allows a single mold to perform multiple functions that traditionally required multiple separate molds, thereby reducing storage space requirements while maintaining manufacturing reliability for various components.
Solution Approach 2:
The thermoform material's physical state is changed by heating it to its transition temperature, making it formable and allowing it to be shaped into different mold cavities. This parameter change (temperature) enables the mold to adapt between different configurations, eliminating the need for multiple fixed molds and reducing storage space while preserving manufacturing precision.
2Manufacturing precision
If multiple specific molds are maintained for each unique component or size, then manufacturing precision is improved, but acquisition costs and device complexity increase
Solution Approach 1:
A single mold assembly with a reconfigurable thermoform material replaces multiple fixed molds, reducing the overall complexity of the mold system while maintaining the ability to produce precise components. The thermoform material can be heated and formed into different cavity shapes, providing universal functionality without requiring multiple separate precision-machined molds.
Solution Approach 2:
By changing the temperature parameter of the thermoform material to its transition state, the material becomes formable and can be shaped into different precision mold cavities. This allows one mold system to achieve the manufacturing precision of multiple specialized molds without the complexity of maintaining separate precision components for each product variant.
3Area of stationary object
If a single adaptive mold is used for multiple components, then storage space and acquisition costs are reduced, but the complexity of the molding process increases
Solution Approach 1:
The molding process utilizes temperature parameter changes to control the thermoform material's state. By heating the material to its transition temperature, it becomes formable and can be shaped into different cavities using simple forming operations rather than complex machining, thereby reducing process complexity while enabling multi-component capability in a single mold.
Solution Approach 2:
The thermoform material undergoes a phase transition at its characteristic transition temperature, changing from a rigid state to a formable state. This phase transition simplifies the molding process by allowing the material to be easily shaped into different cavities through forming operations, reducing the need for complex tooling and processes while enabling storage space reduction through single-mold multi-use.
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
This solution reduces the need for multiple molds, minimizing storage space and costs while enabling efficient production of diverse components by reshaping the thermoform material to form different mold cavities, thus adapting to various part sizes and styles.
Implementation Method 1
The molding surface forms around a positive part into the cavity volume when the molding surface is at at least a transition temperature of the thermoform polymer material
Implementation Method 2
raising a temperature of the thermoform polymer molding surface to at least a transition temperature. In an exemplary aspect, the transition temperature is a temperature that is 15 degrees Celsius ('C') below a glass transition temperature of the thermoform polymer molding surface
Implementation Method 3
forming the molding surface by introducing the thermal energy source into the cavity
Implementation Method 4
reducing a temperature of the molding surface below the transition temperature
Data Source
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AI summary
An adaptable mold includes a thermoform material that is able to manufacture different articles. The thermoform material may be brought to a transition temperature at which it may be formed into a first mold cavity for a first article. After using the thermoform material to mold the first article, the thermoform material may then be formed into a second mold cavity for a second article. The thermoform material may be a shape memory polymer able to return to a learned shape to aid in forming to a new mold cavity. The adaptable mold may use a fill material to provide compressive support to the thermoform material while molding.