Welding Wire Spool Sensing for Remaining Filler Detection

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Solution Overview

Problem

Conventional wire feeders require manual inspection of consumable filler material, leading to inefficiencies and potential disruptions in welding operations due to unpredictable depletion of filler material.

Innovation Solution

A smart spool detection system using sensors to automatically determine the remaining amount of filler material on a spool, including weight, distance, and angle measurements, without relying on special markings or wire feed speed sensors, and can order more material or halt operations when necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual inspection of filler material is used, then device complexity is reduced, but productivity decreases and reliability worsens due to unpredictable depletion

Engineering Contradiction:
Improvewelding operation continuityVSAvoidsensor system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical inspection with automated sensor-based detection systems. Sensors detect parameters such as spool rotation speed, wire feed rate, and spool position to automatically determine filler material consumption, eliminating the need for operators to manually check material levels and ensuring continuous welding operations without interruption

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-monitoring of filler material status through integrated sensors and control circuits that automatically track consumption rates, calculate remaining material, and provide real-time status without requiring external manual intervention. The system serves itself by continuously monitoring its own operational state

Inventive Principle:
Principle #25Self-service

2Loss of time

If manual inspection is performed, then measurement precision is sufficient for basic needs, but loss of time increases due to frequent operator intervention

Engineering Contradiction:
Improveoperator intervention timeVSAvoidautomatic detection capability
Core Design Contradiction:
Loss of timeVSExtent of automation

Solution Approach 1:

Manual time-based estimation is replaced with automated sensor systems that continuously measure spool rotation, wire feed rate, and material consumption. The control circuit processes these measurements to automatically calculate remaining filler material, eliminating operator intervention time while providing precise real-time data

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If no detection system is used, then device complexity remains low, but reliability decreases due to sudden filler material depletion

Engineering Contradiction:
Improvewelding operation stabilityVSAvoiddetection and control system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements feedback mechanisms where sensors continuously monitor filler material consumption and provide real-time data to the control circuit. The control circuit processes this feedback to determine remaining material levels and can alert operators or automatically adjust operations before depletion occurs, ensuring reliable continuous welding

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The detection system performs preliminary assessment of filler material status by continuously measuring consumption rates and calculating remaining material before actual depletion occurs. This allows advance warning and preparation, preventing sudden interruptions to welding operations

Inventive Principle:
Principle #10Preliminary action

4Measurement precision

If traditional wire feed speed sensors are used, then measurement capability is limited to speed only, but measurement precision of filler material status deteriorates

Engineering Contradiction:
Improvefiller material status accuracyVSAvoidsensor configuration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple detection capabilities into an integrated sensor system that simultaneously measures spool rotation speed, wire feed rate, spool position, and material consumption. The control circuit combines these multiple measurement streams to precisely calculate remaining filler material status, achieving high measurement precision through data fusion rather than relying on a single sensor type

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

Ensures continuous welding operations by providing real-time filler material status and preventing interruptions, enhancing productivity and reducing manual checks.

Implementation Method 1

the parameter comprising a weight of the wire spool

Methodology Applied
Scientific EffectWeight detection:

Implementation Method 2

a distance from the second sensor to the wire retained on the spool

Methodology Applied
Scientific EffectDistance measurement:

Data Source

PatentUS20250205805A1Smart spool detection for welding-type systems
Publication Date: 2025.06.26 ILLINOIS TOOL WORKS INC
  • US20250205805A1 patent drawing
  • US20250205805A1 patent drawing
  • US20250205805A1 patent drawing

AI summary

In some examples, smart spool detection systems use one or more first sensors and/or second sensors to detect and/or determine a first parameter (e.g. size) of a spool that retains filler material (e.g., wire) used by welding-type systems. One or more second sensors are used to detect and/or determine a second parameter of the spool. In some examples, the second parameter may be a weight of the spool, a distance to the filler material (e.g., wire) retained on the spool, and/or an angle of a guide arm lever supported by filler material retained on the spool. The smart spool detection system determines a remaining amount of consumable filler material remaining on the spool using the first and second parameters.