Welding Process Selection by Polarity and Wire Feeder Detection

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Solution Overview

Problem

Welding operators face challenges in properly selecting the correct welding process mode when switching between wire and non-wire processes, often due to distance from the power supply and uncertainty about cable connections.

Innovation Solution

A method and system that automatically detect whether a wire feeder is in communication with a welding power supply, determine the current welding process, and set a new welding process based on the current process and output polarity without user intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the welding operator manually selects the welding process mode by connecting/disconnecting the wire feeder, then the welding operator can switch between wire and non-wire process modes, but it becomes difficult for the welding operator to properly select the correct process mode when physically located away from the welding power supply or unsure about cable connections

Engineering Contradiction:

ImproveAbility to switch between wire and non-wire process modesVSAvoidDifficulty in selecting correct process mode

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The welding power supply automatically detects whether a wire feeder is connected and determines the appropriate welding process mode without requiring manual selection by the operator. The system monitors the electrical connection state and autonomously configures the welding parameters, eliminating the need for the operator to manually connect/disconnect the wire feeder or select process modes.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system continuously monitors the electrical connection state between the wire feeder and welding power supply, using this feedback information to automatically determine and adjust the welding process mode. The detection circuitry provides real-time information about the connection status, enabling the system to adapt its operation accordingly.

Inventive Principle:

Principle #23Feedback

2Productivity

If the welding operator is physically located away from the welding power supply, then the welding operator can work at the welding position, but the welding operator cannot properly select the correct process mode due to distance from the power supply controls

Engineering Contradiction:

ImproveAbility to work at remote welding positionVSAvoidInability to select process mode from distance

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The welding power supply performs automatic process mode selection without requiring the operator to be present at the power supply controls. The system autonomously detects the wire feeder connection state and configures the appropriate welding parameters, allowing the operator to work remotely at the welding position.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The manual mechanical selection of process modes through physical connection/disconnection of the wire feeder is replaced with an automatic electrical detection system. The system uses electrical signals and detection circuitry to determine the connection state and automatically select the process mode, eliminating the need for manual intervention at the power supply.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If the welding operator does not know whether welding cables are connected for DCEN or DCEP, then the welding operator can continue working, but the welding operator cannot properly select the correct process mode due to uncertainty about cable connections

Engineering Contradiction:

ImproveAbility to work without knowing cable connection statusVSAvoidDifficulty in selecting process mode due to uncertainty

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system uses detection circuitry to monitor the electrical connection state and determine whether the welding cables are connected for DCEN or DCEP. This feedback information is used to automatically select the appropriate welding process mode, eliminating the need for the operator to know or verify the cable connection status manually.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The welding power supply automatically determines the cable connection status and selects the appropriate process mode without requiring the operator to have knowledge of or verify the connection configuration. The system self-configures based on the detected electrical state.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS12208474B2Systems and methods for selecting a welding process

Publication Date: 2025.01.28 ILLINOIS TOOL WORKS INC

AI summary

Systems and methods for selecting a welding process are disclosed. An example welding power supply is configured to: provide welding power for welding; receive a communication from a remote device over a weld cable, wherein the communication corresponds to a detected welding output polarity; and automatically set a new welding process based on a current welding process of the welding power supply and the received communication.