Multi-Torch Welding Grounding Layout to Prevent Contact Interference
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Solution Overview
Problem
Existing welding machines for head-tail welding of sheet-metal strips face interference issues between grounding contacts of multiple torches, leading to suboptimal voltage and current calculations, which affects the welding process.
Innovation Solution
A welding machine design where each welding torch is equipped with a movable grounding contact that slides independently along a transverse direction, eliminating interference and allowing for optimal voltage and current adjustments for each torch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple grounding contacts are placed in proximity at one end of the locking means, then the device structure is simplified, but the grounding contacts interfere with each other preventing correct voltage and current calculation
Solution Approach 1:
The grounding contacts are segmented and distributed along the locking means rather than concentrated at one end. Each grounding contact is positioned in proximity to its corresponding welding torch, creating independent operational zones that eliminate mutual interference between grounding contacts while maintaining simplified device structure.
2Productivity
If multiple welding torches act on strips simultaneously, then welding productivity is improved, but grounding contacts interfere with each other affecting voltage and current optimization
Solution Approach 1:
Each welding torch and its corresponding grounding contact form a localized welding system with independent parameter control. The grounding contacts are positioned locally near each torch, allowing each welding zone to operate with optimized voltage and current settings tailored to specific welding requirements, thereby maintaining high productivity while ensuring precise control of welding parameters.
3Device complexity
If grounding contacts are positioned at one end of the locking means, then the device structure is simplified, but the current generators cannot establish proper operating relationship with torches
Solution Approach 1:
The grounding contacts are distributed along the longitudinal dimension of the locking means rather than being concentrated at one end. This spatial redistribution along the length of the locking means allows each grounding contact to establish an independent electrical connection with its corresponding welding torch, improving operational ease while maintaining relatively simple device structure.
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 design ensures interference-free operation, allowing each torch to work under optimal conditions, resulting in improved welding efficiency and quality by preventing sudden variations in voltage and current.
Implementation Method 1
welding torches perform the welding... welding torches perform arc-type welding... a current generator creates an electric current between the strips to be welded and the welding torch
Data Source
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AI summary
The present application relates to a welding machine (1) comprising a resting plane configured to support respectively a tail portion and a head portion of two metal sheets to be joined. The metal sheets are slidable along an advancement direction. The welding machine (1) comprises also sheet-metal pressing means (2) configured to lock in a set position the head and tail portions on the resting plane and a plurality of welding torches (3) configured to join respective edges of the tail and head portions. The welding torches (3) are slidably movable along a transverse direction to the advancement direction. The welding machine (1) further comprises a plurality of grounding contacts (4) that is each electrically associated with a respective welding torch (3) and movable solidly constrained to the respective welding torch (3) along the transverse direction.