Moulding Tool Zone Temperature Control
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Solution Overview
Problem
Current moulding techniques, particularly those using autoclaves, struggle to control material properties of articles with varying thicknesses, leading to inconsistencies in material properties due to heat loss and curing rate variations, which complicates the production of parts requiring specific crystallinity and amorphosity levels in thermosetting polymers and metals.
Innovation Solution
A tooling system with independently heated and cooled zones, equipped with sensors to monitor material properties and control heat transfer, allowing for precise regulation of heat into and out of the tool zones during the moulding process, enabling the production of articles with consistent and varied material properties across different areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If autoclaves are used to control tool temperature, then material properties can be regulated, but production time increases and energy efficiency decreases
Solution Approach 1:
The tool is divided into multiple independently controllable zones, each with its own heating and cooling means. This segmentation allows different regions of the tool to be controlled at different temperatures and rates, enabling precise control of material properties without requiring prolonged autoclaving of the entire tool.
Solution Approach 2:
The system dynamically adjusts heating and cooling rates in real-time during the moulding process. The control means can modulate the heating/cooling means to match the specific requirements of different tool zones and material types, optimizing production time while maintaining material property control.
2Manufacturing precision
If autoclaves are used to control cooling rates, then material properties can be controlled, but energy consumption increases and footprint area increases
Solution Approach 1:
The tool is divided into multiple independently controllable zones, each with its own heating and cooling means. This segmentation allows different regions of the tool to be controlled at different temperatures and rates, enabling precise control of material properties without requiring prolonged autoclaving of the entire tool.
Solution Approach 2:
The tooling system is self-contained with integrated heating and cooling means that can operate independently. This eliminates the need for large external autoclaves, reducing energy consumption and footprint area while maintaining precise control over cooling rates and material properties.
3Ease of operation
If uniform tool temperature is maintained, then overall process control is simplified, but material property variance increases in variable thickness articles
Solution Approach 1:
The tool is divided into multiple independently controllable zones, each with its own heating and cooling means. This segmentation allows different regions of the tool to be controlled at different temperatures and rates, enabling precise control of material properties without requiring prolonged autoclaving of the entire tool.
Solution Approach 2:
Different zones of the tool are assigned different temperature profiles and control parameters based on the specific requirements of the article sections they form. This local quality approach allows variable thickness articles to receive customized thermal treatment in each region, ensuring uniform material properties throughout.
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 approach allows for the production of articles with specific material properties, such as controlled crystallinity and amorphosity, by directly monitoring and adjusting heat transfer in real-time, reducing production time and energy inefficiencies associated with traditional methods.
Implementation Method 1
heating means associated with at least some of said tool zones; and control means adapted to control the heating and cooling means to heat or cool the tool zones
Implementation Method 2
cooling means independently associated with at least some of said tool zones; and control means adapted to control the heating and cooling means to heat or cool the tool zones
Implementation Method 3
the exothermic nature of the process of curing/cross linking. The temperature of the curing thermoset polymer is a product of not only the tool temperature, but also of the local reaction rate and the ability for heat to escape from the area in which the reaction is occurring
Data Source
AI summary
A tool system for moulding an article is provided which comprising a tool (100) having a tool surface (104) for forming an article, the tool surface comprising a plurality of tool zones (106). Heating and cooling means (102a) are independently associated with at least some of said tool zones (106). A control means is adapted to control the heating and cooling means (102a) to individually heat or cool the tool zones (106) having heating and cooling means (102a) associated therewith so as to regulate the heat transfer into and out of the article at each tool zone (106) at any particular time throughout the moulding process.