Off-Axis Prepreg Manufacturing via Automated Welding and Alignment
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Solution Overview
Problem
Current methods for manufacturing off-axis unidirectional prepreg material are time-consuming and require skilled labor, resulting in low output rates that cannot support the demand for automated layup processes in composite part fabrication.
Innovation Solution
A machine system comprising a robot, alignment system, and welding system that positions and welds prepreg pieces to form off-axis unidirectional thermoplastic prepreg rolls, ensuring precise abutting contact and high-quality weld seams, enabling efficient production of off-axis prepreg material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to manufacture off-axis unidirectional prepreg material, then quality can be maintained, but production time increases and output rate decreases
Solution Approach 1:
The continuous prepreg material is divided into discrete sections that are individually positioned and welded together. This segmentation allows for automated processing of each segment while maintaining overall quality standards, resolving the contradiction between precision and productivity.
Solution Approach 2:
Manual skilled labor is replaced with an automated welding system that uses precise positioning mechanisms and controlled thermal processes. This substitution eliminates the bottleneck of skilled labor while maintaining quality through consistent automated application of welding parameters.
2Manufacturing precision
If manual skilled labor is used to manufacture off-axis prepreg material, then quality can be ensured, but production time increases
Solution Approach 1:
The welding system incorporates automated positioning and alignment features that allow the process to self-correct and maintain quality without continuous manual intervention. The system serves itself by automatically detecting and compensating for positioning variations, reducing both time and skilled labor requirements while preserving quality.
3Productivity
If automated welding system is used to join prepreg pieces, then production rate increases, but positioning precision requirements increase
Solution Approach 1:
The welding system incorporates sensors and detection mechanisms that provide real-time feedback on the positioning of prepreg pieces. This feedback allows the automated system to make immediate adjustments to maintain precise alignment and bonding, enabling high production rates without sacrificing positioning accuracy.
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
The system enables high-rate, high-quality manufacturing of off-axis prepreg material, facilitating automated fabrication of composite components by reducing production time and labor requirements while maintaining precision and quality.
Implementation Method 1
a welding system has one or more welding shoes configured to apply heat, and preferably pressure, to abutting end edges of the prepreg piece and prepreg layer and form a weld seam joining the prepreg piece to the prepreg layer
Data Source
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AI summary
An off-axis prepreg material manufacturing machine (100) may include a robot (120) configured to position a prepreg piece (172) adjacent to an end of a prepreg layer (180). The machine (100) may additionally include an alignment system (200) configured to sense a position of the prepreg piece (172) relative to the prepreg layer (180) and generate a position signal representative thereof. The machine (100) may also include a controller (192) configured to receive the position signal and cause the robot (120) to adjust the position of the prepreg piece (172) such that an end edge of the prepreg piece (172) and an end edge of the prepreg layer (180) are in substantially abutting contact.