Stud Welding Gun Control for Automated Gas Purging
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Solution Overview
Problem
Existing methods for fastening bolts to surfaces, such as electrical welding, require user-adjusted parameters and rely on manual inspection for quality assessment, which can be inconsistent due to user experience and skill levels, and involve inefficiencies in gas flushing and consumption.
Innovation Solution
A device comprising a welding gun with a stud holder, gas container, gas line, valve, and control device for automated gas flushing and process initiation, reducing waiting time and gas consumption, and providing user notification when ready for welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual gas flushing is performed before welding, then the gas line is purged to prevent oxidation, but the waiting time before welding increases and gas consumption increases
Solution Approach 1:
The control device automatically opens the valve to purge the gas line with inert gas before the welding process starts, eliminating the need for manual intervention and reducing waiting time while ensuring the gas line is properly purged to prevent oxidation
2Reliability
If manual gas flushing is performed before welding, then the gas line is purged to prevent oxidation, but gas consumption increases
Solution Approach 1:
The control device monitors the welding process parameters and automatically controls the valve timing and duration to purge only when necessary, providing feedback-based optimization that reduces unnecessary gas consumption while maintaining connection quality
3Adaptability or versatility
If user adjusts welding parameters manually, then the process is flexible, but the quality assessment depends on user experience and skills
Solution Approach 1:
The control device automatically manages the welding parameters and quality assessment, eliminating dependence on user experience and skills while maintaining process flexibility through programmable settings, thereby ensuring consistent quality across different operators
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
Automated gas flushing and process control enhance the efficiency and consistency of bolt fastening, reducing waiting time and gas usage while ensuring a reliable connection quality through automated parameter management.
Implementation Method 1
a gas line for conducting gas from the gas container to the stud holder
Implementation Method 2
a bolt is brought into contact with the substrate and subjected to an electric current. As soon as the electric current flows between the bolt and the substrate, the bolt is lifted from the substrate, forming an arc. The released energy causes the material of the bolt and the substrate to partially liquefy
Implementation Method 3
To prevent oxidation of the liquefied material, it is known to purge the contact point between the bolt and the substrate with an inert gas
Data Source
Figure 1
AI summary
The invention relates to a device for welding a welding stud to a substrate, comprising a welding gun, which comprises a housing and a stud holder for the welding stud, comprising a welding unit, comprising a first electric cable for conducting welding current from the welding unit to the welding gun, comprising a second electric cable for conducting the welding current from the substrate to the welding unit, comprising a gas container, and comprising a gas line for conducting gas from the gas container to the stud holder, characterised in that the gas container is carried by the welding unit.