Pre-welding Verification of Polymer Pipe Surface Conditions
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Solution Overview
Problem
Existing automated welding systems for gas distribution pipelines made of polymer material fail to guarantee robust and durable welded joints due to potential weld quality defects, leading to significant leak detection and repair costs.
Innovation Solution
A pre-welding verification method that includes determining and comparing surface roughness, cleanliness, and temperature conditions of polymer tubes and accessories before welding, using automated means to block the process until all conditions are met, ensuring high-quality welds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If automated welding systems are used for gas distribution pipelines, then welding efficiency is improved, but weld quality reliability deteriorates due to surface condition defects
Solution Approach 1:
The patent implements preliminary surface preparation and verification actions before welding. Automated scraping means scrape the tube and accessory surfaces to remove contaminants, and verification means check surface roughness, cleanliness, and temperature before allowing welding to proceed. This preliminary action ensures surface conditions meet quality thresholds, resolving the contradiction by maintaining high weld quality while preserving automated welding efficiency.
Solution Approach 2:
The patent employs feedback mechanisms where verification means continuously monitor surface conditions (roughness, cleanliness, temperature) and provide feedback to the control means. If conditions fall outside acceptable ranges, the system automatically adjusts scraping parameters or prevents welding until conditions are corrected. This closed-loop feedback ensures consistent weld quality while maintaining automated process efficiency.
2Reliability
If surface scraping and cleaning steps are performed, then weld quality is improved, but process complexity increases
Solution Approach 1:
The patent merges the scraping and verification functions into an integrated automated system. The scraping means and verification means are combined under unified control, allowing surface preparation and quality checking to occur automatically without manual intervention. This merging reduces operational complexity while maintaining high weld quality through consistent automated execution of both scraping and verification steps.
Solution Approach 2:
The system performs self-service through automated scraping and self-verification of surface conditions. The scraping means automatically prepare surfaces, and the verification means automatically assess whether surfaces meet welding criteria. This self-service capability eliminates the need for complex manual inspection and adjustment procedures, reducing process complexity while ensuring consistent weld quality.
3Reliability
If automated verification means are implemented to check surface conditions, then weld quality is improved, but equipment complexity increases
Solution Approach 1:
The verification means are designed with multi-functionality, capable of measuring multiple surface parameters (roughness, cleanliness, temperature) using integrated sensors and detection mechanisms. This universal verification system replaces what would otherwise require multiple separate inspection devices, reducing overall equipment complexity while comprehensively ensuring weld quality through multiple parameter verification.
Data Source
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Figure 2A~2B
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AI summary
The invention relates to a method for checking, prior to welding, two components (4, 5, 6) made of polymer material, the method comprising a step of determining respective values relating to the roughness of the components (4, 5, 6), a step of determining respective values relating to the cleanliness of the components (4, 5, 6), a step of determining respective values relating to the temperature of the components (4, 5, 6) and automated means for halting progression to a subsequent method step should the predetermined conditions not be met.