Oval Coiled Wire Conduit for Welding Systems
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Solution Overview
Problem
Conduits with rectangular or circular cross-sections in weld wire dispensing systems suffer from exposed edges that damage the weld wire, increase friction, and lead to residue buildup, reducing efficiency and causing drive roll slippage and burn-back.
Innovation Solution
A conduit constructed from coiled wire with an oval or elliptical cross-section, which allows for easier coating of one side and reduces friction and damage by eliminating sharp edges, and can be used as a spring liner or control cable conduit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wire with rectangular cross-section is used to construct conduit, then the conduit structure is simple and easy to manufacture, but the exposed edges damage the weld wire surface and increase friction
Solution Approach 1:
The patent applies this principle by transitioning from rectangular wire with sharp edges to oval or elliptical wire with curved surfaces. The rounded cross-sectional shape eliminates exposed sharp edges that cause wire damage, while maintaining structural integrity and flexibility of the conduit.
2Object-affected harmful factors
If wire with circular cross-section is used to construct conduit, then the conduit has smooth surfaces reducing friction, but it is difficult to provide protective coating on only the inner surface due to wire rotation in dies
Solution Approach 1:
The patent applies this principle by using oval or elliptical cross-sections instead of circular ones. This asymmetric shape prevents the wire from rotating freely in the die during coating application, allowing the coating to be applied consistently to specific surfaces while maintaining the smooth curved geometry that reduces friction.
3Device complexity
If conventional conduit is used, then the structure is simple, but residue builds up in the inner passageway increasing friction and causing drive roll slippage
Solution Approach 1:
The rounded oval or elliptical cross-section creates smooth curved surfaces throughout the conduit interior that prevent residue accumulation. Unlike rectangular conduits with corners where debris collects, the continuous curved geometry allows weld wire to pass through cleanly without buildup that would increase friction or cause slippage.
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
The oval or elliptical cross-sectional shape reduces friction, prevents wire damage, and allows for flexible bending without increasing friction, enhancing the efficiency of weld wire dispensing systems and preventing residue buildup.
Implementation Method 1
The sharp edges of the wire 'shave' or cut the weld wire as the weld wire is moved through the conduit. The sharp edges also increase the coefficient of friction between the weld wire and the conduit
Implementation Method 2
In one (1) embodiment, the coating is a tungsten sulfide coating. Coating the inner passageway of the conduit reduces the coefficient of friction between the conduit and the weld wire or the actuation cable
Data Source
AI summary
A conduit constructed from a coiled wire having an oval or elliptical cross-sectional shape.