Composite Finished Part Forming With a Preformed Finishing Shell
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Solution Overview
Problem
Existing methods for manufacturing finished parts, such as airplane seat covers, face challenges with thin finishing films creasing on complex shapes and require lengthy, costly processes.
Innovation Solution
A method involving a finishing shell made of plastic material, heated structural parts, and a two-mold process to integrate the shell with a composite structural part, allowing for a single operation to form a finished piece with improved adhesion and reduced production time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a thin finishing film (around 0.2 mm) is used to cover the structural part, then the manufacturing process is simpler, but the film tends to crease and is not suitable for parts with complex shapes
Solution Approach 1:
The patent changes the thickness parameter of the finishing shell from thin (0.2 mm) to thick (0.5-1.2 mm), which eliminates creasing issues while maintaining manufacturing feasibility through thermoforming processes
Solution Approach 2:
The finishing shell is pre-formed by thermoforming or thermocompression before being assembled with the structural part, allowing complex shapes to be achieved without creasing during the final assembly process
2Adaptability or versatility
If a manual step of adding a shell is used to finish the structural part, then the desired color and texture can be achieved, but the manufacturing duration increases and costs increase
Solution Approach 1:
The patent merges the structural part and finishing shell into a single integrated component that is formed and assembled in one stamping operation, eliminating separate manual finishing steps while maintaining color and texture customization through the finishing shell
Solution Approach 2:
The finishing shell serves multiple functions: providing desired color, texture, and surface finish while also being integrated into the structural part in a single manufacturing process, making the process both versatile and efficient
3Reliability
If the structural part is heated to its melting temperature and formed against the finishing shell, then good adhesion is achieved, but the process complexity increases
Solution Approach 1:
The patent utilizes the phase transition of the composite material from solid to melted state through heating to its melting temperature, allowing the material to flow and adhere to the finishing shell, then cools and solidifies to create a strong bond
Solution Approach 2:
The finishing shell acts as an intermediary element between the male and female molds during the stamping process, providing a surface that the heated structural part adheres to, while the molds provide the shaping force
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
Enables efficient, single-step manufacturing of finished parts with complex shapes, maintaining mechanical qualities and allowing for customizable finishes without prolonging production duration.
Implementation Method 1
a step of heating a structural part made of a composite material to its melting temperature
Implementation Method 2
a step of putting in shape the structural part against the finishing shell by means of the male punch-shaped mold cooperating with the female mold
Data Source
AI summary
The invention relates to a method for manufacturing a finished part comprising:a step of placing a trimmed finishing shell inside a heated mold chosen from a first mold referred to as a female mold and a second mold referred to as a male mold in the form of a punch,a step of heating a structural part made of a composite material up to its melting point,a step of placing the structural part on the finishing shell,a step of shaping the structural part against the finishing shell by means of the male mold in the form of a punch cooperating with the female mold, such that the finishing shell is fixed to the structural part that was shaped to obtain the finished part.