Laser Metal Joiner for Thin-Gauge Weld Surface Quality
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Solution Overview
Problem
Existing metal joining processes face challenges in joining thin gauge and thick gauge metal sheets due to issues with mechanical inserts, surface quality, and chemical residues, which affect the thickness and require adjustments in downstream processing equipment.
Innovation Solution
A metal joiner system utilizing a cutting header and a joining header with laser beams to prepare and form a joint, accompanied by a cleaning header to remove contaminants and a joint finisher to refine the weld, ensuring minimal thickness and surface quality improvements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If mechanical inserts are used to join metal sheets, then the joining strength is improved, but the surface quality deteriorates due to chemical residues and the thickness increases requiring equipment adjustments
Solution Approach 1:
The patent replaces the mechanical joining system (using metal inserts, bending, and mechanical fastening) with a laser-based joining system. The laser beam melts and fuses the metal sheets directly without mechanical inserts, eliminating chemical residues and maintaining surface quality while achieving strong joints.
Solution Approach 2:
The patent changes the joining parameters by using controlled laser energy input to melt and fuse metals. By adjusting laser power, speed, and focus, the process achieves strong joints without increasing thickness, unlike mechanical inserts that add material and require downstream equipment adjustments.
2Strength
If mechanical inserts are used to join metal sheets, then the joining strength is improved, but the thickness increases requiring downstream equipment adjustments
Solution Approach 1:
The patent replaces mechanical inserts that add thickness with a laser fusion process that joins sheets without significant thickness increase. The laser melts and fuses the sheets directly, maintaining the original thickness profile and eliminating the need for downstream equipment adjustments.
Solution Approach 2:
The patent changes the joining method from additive (mechanical inserts increasing thickness) to fusion-based (laser melting without significant thickness increase). By controlling laser parameters, the process achieves strong joints while maintaining the original sheet thickness, avoiding the need to lift tension levelers or adjust downstream equipment.
3Adaptability or versatility
If mechanical joining processes are used, then the joining capability is improved, but the productivity decreases due to equipment adjustments and cutting requirements
Solution Approach 1:
The patent replaces complex mechanical joining processes with a streamlined laser-based system. The laser can join sheets of varying thicknesses and materials without requiring mechanical insert selection, installation, or downstream equipment adjustments, significantly improving processing speed and productivity.
Solution Approach 2:
The laser joining system provides universal capability to join different metal sheets (varying thicknesses, materials) with a single process, eliminating the need for different mechanical insert types and downstream equipment adjustments required by mechanical joining methods.
4Strength
If thin gauge sheets are joined with mechanical inserts, then the joining strength is improved, but the manufacturing difficulty increases due to insert size constraints
Solution Approach 1:
The patent replaces mechanical inserts with laser-based joining, which eliminates the constraint of insert size relative to sheet thickness. The laser can effectively join thin gauge sheets without requiring oversized inserts that would be difficult to manufacture or install.
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 efficient and high-speed joining of metal substrates with reduced thickness variation, minimizing debris and surface defects, and allows for seamless integration with existing processing equipment without adjustments.
Implementation Method 1
The cutting header is communicatively coupled to the power source and prepares a joining region for formation of a joint by directing a first laser beam from the metal joiner onto the joining region
Implementation Method 2
The joining header is communicatively coupled to the power source and forms the joint in the joining region by directing a second laser beam from the metal joiner onto the joining region
Data Source
AI summary
A metal joiner system includes a power source and a metal joiner. The metal joiner includes a cleaning header, a cutting header, a joining header, and a joint finisher, each of which are communicatively coupled to the power source. The cutting header and cleaning header are configured to direct a first laser beam to prepare a joining region, and the joining header is configured to direct a second laser beam to form a joint in the joining region. A method of joining a metal substrates includes forming a joining region in abutting metal substrates, directing the first laser beam onto the joining region in a joint preparation stage, and directing the second laser beam onto the joining region to form a weld. A product of a metal joiner, a weld, has a portion of weld metal removed at the weld start and the weld crater regions.