Rotating Power Connector for Welding Wire Feeders
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Solution Overview
Problem
Conventional wire feeding systems experience wear and failure due to twisting, stress, and strain on welding power cables and wire liners caused by manipulation of the welding torch, leading to downtime for cable replacement.
Innovation Solution
A wire feeding system with a built-in rotating power connector that allows the power pin and welding power cable to rotate relative to the wire feeder, minimizing twisting, stress, and strain, and includes a mechanism to secure the power pin within the connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed power cable connection is used between wire feeder and welding torch, then the system structure is simple, but the cable experiences twisting and stress leading to wear and failure
Solution Approach 1:
The patent applies the dynamics principle by introducing a rotating power connector that allows the power cable to rotate freely at the wire feeder end. This dynamic capability enables the cable to accommodate torch manipulation movements without experiencing excessive twisting stress, thereby reducing wear and extending cable life while maintaining a relatively simple overall system structure.
2Reliability
If the power cable is allowed to rotate freely, then wear and stress are reduced, but the connection stability between wire feeder and power pin deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the connection system into two distinct functional parts: a rotating component that allows cable movement and a locking mechanism that secures the power pin. This segmentation enables the system to simultaneously achieve rotation capability for reducing cable stress and stable electrical connection for reliable power transfer.
Solution Approach 2:
The patent uses a locking mechanism as an intermediary element between the rotating connector and the power pin. This intermediary component provides the necessary connection stability by securing the power pin in place, while the rotating connector itself maintains the ability to rotate freely to reduce cable wear and stress.
3Productivity
If conventional fixed connectors are used, then the system is easy to operate, but downtime for cable replacement increases
Solution Approach 1:
The rotating power connector provides self-service functionality by automatically reducing cable wear and stress through its rotation capability during normal operation. This preventive design reduces the frequency of cable replacements needed, thereby increasing welding uptime without requiring complex additional operations or maintenance procedures from the user.
Data Source
AI summary
An example welding-type system includes a wire feeder for providing electrode wire to a welding torch comprising one or more drive rolls configured to retract or advance the electrode wire; a rotating power connector comprising an outer portion with a hollow bore; and an inner sleeve within the hollow bore, wherein the inner sleeve is configured to receive a power pin of the welding torch in alignment with the one or more drive rolls, conduct electrical power to the power pin, and permit the power pin to rotate with respect to the outer portion, wherein the outer portion is fixed within the wire feeder.