3D Laser Pipe Seam Detection Sensor Head
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Solution Overview
Problem
Laser beam machines processing welded pipes face challenges in accurately detecting the position of weld seams on both cylindrical and square pipes, which is crucial for avoiding seam appearance issues and ensuring precise structural processing.
Innovation Solution
A three-dimensional laser beam machine equipped with a sensor head that contacts the inner wall surface of the pipe, featuring a sensor lever and limit switch for detecting seam movement, and an air nozzle for cleaning, allowing for automatic detection of seam positions on welded pipes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor head contacts the inner wall surface of the pipe to detect seam position, then measurement precision is improved, but device complexity increases due to mechanical contact mechanisms
Solution Approach 1:
The patent replaces complex optical or electromagnetic detection systems with a simple mechanical contact-based sensor head that uses a sensor lever and limit switch to detect seam position, thereby reducing device complexity while maintaining measurement precision
Solution Approach 2:
The sensor head utilizes the natural geometry of the pipe and seam to enable self-alignment and automatic detection during pipe rotation, eliminating the need for complex positioning mechanisms and reducing overall device complexity
2Reliability
If mechanical means are used to detect seam position, then reliability of detection is improved, but ease of operation deteriorates due to contact wear and maintenance requirements
Solution Approach 1:
The patent introduces an air nozzle that blows air onto the seam area to remove debris and contaminants, ensuring reliable detection without requiring complex mechanical cleaning mechanisms or frequent manual maintenance
Solution Approach 2:
The sensor head is designed to automatically clean itself through the air blow mechanism, eliminating the need for external maintenance operations and improving ease of operation while maintaining detection reliability
3Measurement precision
If the sensor head is positioned close to the sensor lever for accurate detection, then measurement precision is improved, but object-generated harmful factors increase due to potential interference with pipe rotation and processing
Solution Approach 1:
The sensor head is designed with dynamic positioning capability that allows it to adapt its position relative to the rotating pipe, maintaining optimal detection distance while avoiding interference with the pipe rotation and laser processing operations
Solution Approach 2:
The detection system is segmented into independent functional components (sensor head, air nozzle, sensor lever) that can operate independently, allowing the sensor head to be positioned close to the seam for accurate detection without interfering with the overall pipe processing system
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 reliable and automatic detection of seam positions, facilitating precise three-dimensional laser processing by ensuring accurate recognition and avoidance of weld seams during processing.
Implementation Method 1
the sensor head further comprises an air nozzle for providing air blow to the portion to be detected
Data Source
AI summary
A device for detecting the position of a seam on a welded pipe in a three-dimensional laser beam machine for processing pipes. The three-dimensional laser beam machine has a chuck 62 for holding, rotating and axially moving a cylindrical pipe 400. A weld seam detection device 100 is equipped with a sensor head 110 provided on a laser processing main body 30. The sensor head 110 has a master lever 120 that moves along an inner wall surface 410 of the cylindrical pipe 400 and a sensor lever 140. When the cylindrical pipe 400 is rotated and the sensor lever 140 contacts the weld seam, the movement of the sensor lever 140 is detected by a micro switch 150, which sends a signal to an NC device 90 by which the weld seam position is recognized.