Welding Torch Temperature Feedback for Safe Live-Arc Training

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Solution Overview

Problem

Welding training systems are often expensive and may not adequately train operators to perform high-quality welds, limiting their effectiveness in preparing operators for industrial applications.

Innovation Solution

A welding system equipped with a temperature sensor that disables the live-arc welding mode if the torch temperature exceeds a threshold, accompanied by display and vibration feedback to alert the operator, ensuring safe operation and improved training practices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If temperature monitoring and feedback mechanisms are added to the welding torch, then operator safety and training effectiveness are improved, but device complexity increases

Engineering Contradiction:
Improveoperator safetyVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements temperature monitoring with feedback display on the torch itself, showing real-time temperature readings and alerts when thresholds are exceeded. This closed-loop feedback system improves safety by immediately informing operators of dangerous conditions without requiring external monitoring equipment.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The torch performs self-monitoring of its temperature and provides self-diagnosis through onboard displays and alerts. The system independently tracks its thermal state and communicates status to the operator, eliminating the need for external monitoring devices and reducing overall system complexity.

Inventive Principle:
Principle #25Self-service

2Reliability

If live-arc welding mode is disabled based on temperature thresholds, then operator safety is improved, but training effectiveness may worsen due to reduced practical welding opportunities

Engineering Contradiction:
Improveoperator safetyVSAvoidtraining effectiveness
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The welding mode enablement is dynamically adjusted based on real-time temperature conditions. The system automatically transitions between enabled and disabled states according to thermal thresholds, allowing maximum training opportunities when safe and preventing operation when dangerous, thus optimizing both safety and training effectiveness.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameter (welding mode enablement) based on the temperature parameter. When temperature exceeds predefined thresholds, the welding mode is disabled; when within safe ranges, it is enabled. This parameter-based control ensures safety while maximizing legitimate training opportunities.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If temperature sensors and control circuitry are integrated into the training welding torch, then safety monitoring capability is improved, but manufacturing cost increases

Engineering Contradiction:
Improvesafety monitoring capabilityVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The temperature sensor and control circuitry are integrated into the welding torch to create a multi-functional device that combines welding, temperature monitoring, display, and control capabilities in a single unit. This universal design consolidates multiple functions into one device, potentially reducing overall system cost compared to separate monitoring equipment.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the temperature monitoring system with the welding torch itself, combining what would traditionally be separate devices (welding torch and temperature monitor) into a single integrated unit. This consolidation reduces the number of components and interfaces needed, simplifying manufacturing and reducing costs.

Inventive Principle:
Principle #5Merging (Combining)

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 system enhances operator training by preventing overheating, providing real-time feedback, and ensuring the quality of welds, thus improving the overall effectiveness of the training process while being cost-effective.

Implementation Method 1

a sensor configured to detect a temperature associated with the welding torch

Methodology Applied
Scientific EffectTemperature sensing: Thermal Radiation

Implementation Method 2

a temperature of a light-emitting device of the welding torch

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentEP3092105B1Feedback from a welding torch of a welding system
Publication Date: 2024.01.10 ILLINOIS TOOL WORKS INC
  • EP3092105B1 patent drawingFigure 1
  • EP3092105B1 patent drawingFigure 2
  • EP3092105B1 patent drawingFigure 2A~3

AI summary

A welding system includes a welding torch. The welding torch includes a sensor configured to detect a motion associated with the welding torch, a temperature associated with the welding torch, or some combination thereof. A display of the welding torch is activated, a determination is made that the welding torch has been involved in a high impact event, live welding using the welding torch is disabled, a software selection is made, or some combination thereof, based on the motion, the temperature, or some combination thereof.