Welding Torch Nozzle Cleaning for Robotic Spatter Buildup
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Solution Overview
Problem
The accumulation of weld spatter on the nozzle and welding tip in MIG welding torches restricts gas flow, impedes weld wire feed, and can lead to a breakdown of the welding process, with existing anti-spatter compounds only delaying deposition rather than preventing it, and manual cleaning is inefficient for robotic welding machines.
Innovation Solution
A welding torch maintenance apparatus with gripping and cleaning mechanisms that include a first gripping means for the welding arm, a second rotatable and movable gripping means for the nozzle, and a cleaning system to remove and clean the nozzle and welding tip, allowing for efficient removal and replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning is used to remove weld spatter, then cleaning effectiveness is achieved, but productivity is reduced due to inefficiency in high-cost robotic welding operations
Solution Approach 1:
The welding torch is equipped with a self-cleaning mechanism that automatically removes weld spatter during or between welding operations. The system includes a cleaning element positioned within the torch that contacts and removes spatter from the nozzle and contact tip, eliminating the need for manual intervention and maintaining continuous productivity in robotic welding operations.
2Reliability
If anti-spatter compounds are applied to delay spatter deposition, then temporary protection is provided, but the compounds only delay rather than prevent spatter accumulation
Solution Approach 1:
The invention extracts the harmful weld spatter from the critical areas (nozzle and contact tip) through a mechanical cleaning element that physically removes spatter as it accumulates. This active removal approach prevents spatter buildup rather than relying on chemical compounds that only delay deposition, thereby eliminating the need for frequent maintenance interruptions.
3Productivity
If weld spatter accumulates on the nozzle and welding tip, then gas flow is restricted and wire feed is impeded, but the spatter buildup is a natural byproduct of the welding process
Solution Approach 1:
The self-cleaning mechanism operates continuously or at scheduled intervals during welding operations to maintain clear gas flow paths and unobstructed wire feed. By continuously removing spatter, the system ensures uninterrupted welding productivity without the need to stop operations for manual cleaning, thus maintaining both productivity and reliability.
Data Source
AI summary
A welding torch maintenance apparatus and a welding tip changer are described. The welding torch maintenance apparatus and the welding tip changing apparatus each comprise a first gripping means for fastening the welding torch/diffuser so that the nozzle/welding tip is aligned with the rotational axis, a second gripping means for holding the nozzle/welding tip, the second gripping means rotates about the rotational axis to remove the nozzle/welding tip, and moves along the rotational axis. A drive means is provided for rotating the second gripping means, and a lift system is provided for moving the second gripping along the rotational axis. The welding torch maintenance apparatus further includes a cleaning means which enters the nozzle at the distal end and cleans an interior of the nozzle.