Integrated Indirect Spot Welding Electrodes for Narrow Spaces
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Solution Overview
Problem
Conventional indirect spot welding apparatuses face challenges in reducing size and increasing efficiency, particularly when working in narrow spaces, due to increased inter-electrode distance and reactive current issues.
Innovation Solution
The integration of the welding electrode with the ground electrode, allowing for mechanical connection and independent movement, reduces the inter-electrode distance, thereby shortening the electrical path and reducing reactive current, enabling more efficient welding in confined spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ground electrode and holding member are made as separate integrated C-shaped members with a separate welding electrode, then sufficient contact of the ground electrode with the plate-shaped member is ensured, but the inter-electrode distance increases and the apparatus size increases making welding in narrow spaces difficult
Solution Approach 1:
The welding electrode is mechanically integrated with the ground electrode to form a single unified structure. This merging eliminates the need for separate positioning of the welding electrode and ground electrode, thereby reducing the inter-electrode distance and apparatus size while maintaining sufficient contact between the ground electrode and plate-shaped member
2Reliability
If the ground electrode and holding member are made as separate integrated C-shaped members with a separate welding electrode, then sufficient contact of the ground electrode with the plate-shaped member is ensured, but reactive current increases and welding efficiency decreases
Solution Approach 1:
By integrating the welding electrode with the ground electrode, the electrical path length is reduced. This merging eliminates unnecessary electrical path segments, thereby reducing reactive current and improving welding efficiency while ensuring sufficient contact
3Adaptability or versatility
If the welding electrode is positioned off-center relative to the ground electrode, then indirect spot welding can be performed, but the inter-electrode distance increases reducing welding efficiency
Solution Approach 1:
The welding electrode is mechanically integrated with the ground electrode, allowing the welding electrode to be positioned off-center for indirect spot welding while maintaining minimal inter-electrode distance. This integration ensures that versatility in welding position is achieved without sacrificing welding efficiency
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
This configuration allows for faster welding with improved efficiency and quality, as well as the ability to perform welding in narrow spaces with reduced deformation and cost-effective operations.
Implementation Method 1
energization is performed as indicated by the reference symbol C101 and welding is performed
Data Source
AI summary
An indirect spot welding apparatus includes a welding electrode that is brought into pressure contact with one of surfaces of a plurality of plate-shaped members that are objects to be welded in one side in a stacking direction of the plate-shaped members, a ground electrode that is brought into pressure contact with the one of the surfaces in the one side or another one of the surfaces in the other side in the stacking direction in a position shifted from an axial center of the welding electrode, and an opposed member disposed coaxially with the ground electrode to be opposed to the ground electrode so as to hold at least one of the plate-shaped members between the opposed member and the ground electrode, and the welding electrode is mechanically integrated with the ground electrode to be movable in a direction parallel to an axial direction of the ground electrode.