Bladed Part Mould Assembly for Resin Injection and Shield Co-Moulding
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Solution Overview
Problem
Existing moulds for manufacturing composite turbomachine bladed parts are not optimized for specific functions like resin injection and metal shield co-injection, leading to resin leakage, increased waste, and additional bonding steps, and are not suitable for co-moulding with metal shields.
Innovation Solution
A moulding device with interlocking parts, including a base and a bell-shaped dome, that is specifically designed for resin injection and metal shield co-injection, minimizing resin leakage and optimizing the mould assembly and disassembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single mould is used to carry out both shaping and resin injection, then the manufacturing process is simplified, but the mould cannot be specifically adapted and optimised for either step and cannot perform additional functions like co-injection of metal shields
Solution Approach 1:
The invention divides the mould into separate components: a base part and a removable insert part. This segmentation allows the insert to be specifically designed for co-injection of metal shields while the base handles shaping and resin injection, resolving the contradiction between simplified structure and enhanced functionality.
Solution Approach 2:
The mould design incorporates multiple functions within a single integrated system. The base part provides shaping and resin injection capabilities, while the removable insert enables co-injection of metal shields. This multi-functionality allows the mould to perform shaping, resin injection, and shield co-injection without requiring separate dedicated tools for each operation.
2Adaptability or versatility
If a mould comprises a large number of movable parts to perform compression moulding, then the mould can be adapted for co-injection, but this creates resin leakage during injection resulting in waste and requiring complete cleaning
Solution Approach 1:
The mould is segmented into a base and a removable insert that locks into the base. This segmentation creates a stable, well-defined injection cavity with proper sealing surfaces, eliminating resin leakage while maintaining the adaptability needed for co-injection of metal shields.
Solution Approach 2:
The removable insert acts as a disposable or easily replaceable component that can be removed and cleaned separately from the base. This allows for quick maintenance and cleaning of the injection cavity without requiring complete disassembly and cleaning of the entire mould system, reducing downtime and operational complexity.
3Adaptability or versatility
If the mould is designed for co-injection of metal shields, then additional functions are enabled, but the mould structure becomes more complex with more parts
Solution Approach 1:
The mould is divided into a base part and a removable insert part. The insert contains the specific features needed for co-injection of metal shields, while the base provides the fundamental shaping and injection capabilities. This segmentation adds the needed functionality without requiring complete redesign of the entire mould structure.
Solution Approach 2:
The removable insert is designed to nest within or lock into the base part, creating a compact integrated structure during operation. This nesting approach allows the mould to achieve complex functionality through nested components rather than through a sprawling complex structure, minimizing the overall footprint and simplifying handling.
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
Reduces resin waste, eliminates the need for additional bonding steps, and enhances the quality of the final product by ensuring secure attachment of the metal shield during resin impregnation, thus optimizing the manufacturing process.
Implementation Method 1
injecting resin into a preform to impregnate the preform
Implementation Method 2
placed in an oven to polymerise the resin and harden it
Implementation Method 3
comprising inner surfaces cooperating by corner effect with complementary outer surfaces of the mould in order to apply a clamping force on the parts of the mould
Implementation Method 4
A first way is to bond the shield to the bladed part after polymerization of the resin
Data Source
AI summary
A device for moulding at least one bladed part of a turbine engine, including a base; a mould formed from a plurality of parts nested inside one another, this mould being applied to the base. A first seal is mounted between the mould and the base; and a bell is mounted on the mould and around the mould, this bell being applied to the base. A second seal is mounted between the bell and the base, this bell being configured to be held tight against the base and having interior surfaces engaging by wedge effect with complementary exterior surfaces of the mould in order to apply a clamping force on the parts of this mould.