Induction Heating Mold for Composite Parts
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Solution Overview
Problem
Existing molding tools for composite part production face challenges such as long cycle times, high energy consumption, uneven heating, large physical space requirements, and high capital expenditures, limiting their efficiency and quality in producing lightweight materials for industries like automotive and aerospace.
Innovation Solution
A molding tool using induction heating with a coil assembly attached to the mold via clamping means, which are welded, brazed, or soldered to the mold's outer surface, allowing for efficient heat distribution and high-temperature applications, and a method involving inductive heating with a predetermined time-temperature profile for composite part production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional heating methods (ovens, heated autoclaves, resistance wires) are used, then heating can be achieved, but cycle times are long and energy consumption is high
Solution Approach 1:
The patent replaces traditional mechanical heating systems (ovens, resistance wires, heated autoclaves) with an induction heating system that uses electromagnetic fields to directly heat the mold. This substitution eliminates the need for thermal conduction through intermediate elements, enabling rapid and energy-efficient heating that significantly reduces cycle times while lowering energy consumption.
Solution Approach 2:
The induction heating system operates through periodic electromagnetic cycles that rapidly alternate and reverse, generating eddy currents in the mold that produce intense localized heating. This periodic electromagnetic action enables the mold to be heated and cooled quickly, dramatically reducing the thermal mass issues and long cycle times associated with traditional continuous heating methods.
2Manufacturing precision
If traditional heating methods are used, then heating can be achieved, but heat distribution is uneven affecting part performance
Solution Approach 1:
The induction heating system employs multiple coils strategically positioned at different locations on the mold, allowing independent control of heating zones. Each coil can be adjusted to provide the exact amount of heat needed for its specific region, ensuring uniform heat distribution across the entire mold surface and eliminating the uneven heating problems that compromise part performance.
Solution Approach 2:
The system incorporates temperature sensors and control systems that continuously monitor the thermal state of the mold and adjust coil power in real-time. This feedback mechanism ensures that temperature variations are immediately corrected, maintaining uniform heat distribution throughout the molding process and guaranteeing consistent part quality and performance.
3Productivity
If induction heating coils are attached to the mold, then efficient heat distribution is achieved, but the attachment method must withstand high temperatures and mechanical stress
Solution Approach 1:
The patent integrates the coils directly into the mold structure through various attachment methods (welding, brazing, mechanical fastening, or adhesive bonding), merging the heating element with the mold as a unified system. This integration ensures that the coils remain securely positioned during high-temperature operation and mechanical cycling, maintaining both heating efficiency and attachment durability throughout the tool's service life.
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 enables faster, more energy-efficient, and cost-effective production of high-quality composite parts with improved heat management, suitable for thermoplastic and high-end composite materials, while reducing cycle times and energy consumption.
Implementation Method 1
molding tool for producing a composite part using induction heating
Implementation Method 2
at least one coil or at least one wire of a coil arranged on the outer surface of the mold
Data Source
Figure 1a~2
Figure 3
Figure 4~5
AI summary
A molding tool for producing a composite part using induction heating. The molding tool includes a mold (10) having a contact surface adapted to be in contact with a material to be transformed into a composite part, and an outer surface; at least one coil (21-23) or at least one wire (211-213) of a coil (21-23) arranged on the outer surface of the mold (10); and at least one clamping means (40). The clamping means has a first end (41), a second end (42) and an intermediate section (43) extending between the first end (41) and the second end (42). At least one of the first end (41) and second end (42) is attached to the outer surface of the mold (10) using welding, brazing or soldering, so as to at least partly fixate the at least one coil (21-23) to the outer surface of the mold (10). The intermediate section (43) at least partially encloses the at least one wire (211-213) or coil (21-23) to hold said at least one wire (211-213) or coil (21-23) in place on the outer surface of the mold (10).