Welding Suction Opening on Movable Guide Arm
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Solution Overview
Problem
Existing strip welding devices inefficiently extract gases from the welding point, exposing operators to fumes, especially when device covers are not closed, due to the gas extraction being relatively far from the welding point.
Innovation Solution
The suction opening is integrated into or attached to the guide arm, allowing it to move with the welding electrode, ensuring direct gas extraction above or near the welding point, with gases being directed through a hollow axle to a blower, eliminating the need for additional hoses and preventing collision with other tools. This setup includes actuators for controlled movements and a filter to purify the gases before discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the suction device is located far from the welding point (in the device cover), then the device structure is simpler, but the gas extraction efficiency is poor and operators are exposed to fumes
Solution Approach 1:
The suction device is integrated into the guide arm, making it movable along with the welding electrode. This dynamic positioning ensures the suction opening remains close to the welding point throughout the welding process, effectively extracting fumes at the source without requiring a complex fixed structure overhead
Solution Approach 2:
The guide arm serves dual functions: guiding the welding electrode and housing the suction device. This multi-functionality eliminates the need for separate fixed suction structures, reducing overall device complexity while maintaining effective fume extraction
2Productivity
If a hose is routed from the suction opening to the blower, then gas extraction is effective, but the hose may collide with other tools during lifting and pivoting movements
Solution Approach 1:
The hollow axle serves both as the rotational connection between guide arm and base plate and as the gas transport conduit. This merging of structural and functional elements eliminates the need for separate hoses, preventing collisions during movements while maintaining effective gas extraction
Solution Approach 2:
The hollow axle acts as an intermediary structure that simultaneously provides mechanical support for the guide arm's lifting and pivoting movements while serving as the pathway for gas transport from the suction opening to the blower, eliminating the need for separate flexible hoses
3Device complexity
If the suction opening is fixed in the device cover, then the device structure is simpler, but the suction opening is not positioned above the welding point when the electrode is in rest position
Solution Approach 1:
The suction opening is attached to the movable guide arm rather than being fixed in the device cover. As the guide arm moves to different positions during welding operations, the suction opening dynamically follows the welding electrode, ensuring fumes are always extracted at the source regardless of the electrode's position
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 ensures effective and cost-efficient gas extraction directly at the welding point, reducing operator exposure and maintaining a clear machining area, with gases being filtered and safely routed outside or into the environment, enhancing operational safety and efficiency.
Implementation Method 1
a suction device for sucking off gases generated during welding of the strip
Implementation Method 2
a filter to purify the gases before discharge
Data Source
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AI summary
The invention relates to a device for welding a strip of material, comprising a guide arm (4) for guiding at least one welding electrode (3a) and a suction device for evacuating gases. According to the invention, at least one suction opening of the suction device is displaced along with the guide arm for a more precisely targeted evacuation of the gases.