Quick-Change Wire Feeder Mounting for Tool-Free Replacement

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Solution Overview

Problem

Automatic welding applications face downtime and safety hazards due to wire bird nests causing short circuits and requiring labor-intensive tool-based removal and installation of wire feeders, which can lead to damage and human error.

Innovation Solution

A quick-change wire feeder system utilizing quick-disconnect members, such as cam levers or thumb screws, allows for tool-free and single-person removal and replacement of the wire feeder, maintaining electrical isolation and minimizing downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If conventional wire feeder mounting with screws and non-conductive isolators is used, then electrical isolation is maintained, but removal and installation require tools and multiple persons causing downtime

Engineering Contradiction:
ImprovedowntimeVSAvoidremoval and installation complexity
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The wire feeder mounting system is segmented into modular components: a mounting bracket with integrated quick-connect features, electrical isolators positioned at specific locations, and quick-connect members that enable tool-free attachment and detachment. This segmentation allows the wire feeder to be rapidly removed and reinstalled without tools while maintaining electrical isolation through the distributed isolator configuration.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting bracket is pre-configured with quick-connect members and the electrical isolators are pre-positioned in their correct locations before the wire feeder is attached. This preliminary preparation ensures that when the wire feeder needs to be removed and reinstalled, the process can be completed quickly without requiring tools or complex alignment procedures, thereby minimizing downtime.

Inventive Principle:
Principle #10Preliminary action

2Object-generated harmful factors

If wire feeder is removed for cleaning wire bird nest, then wire bird nest can be cleaned, but the process is labor intensive and costly

Engineering Contradiction:
Improvewire bird nestVSAvoidcleaning operation complexity
Core Design Contradiction:
Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The wire feeder unit is designed to be easily extracted from the welding system through the quick-connect mounting mechanism. When wire bird nest occurs, the entire wire feeder can be quickly removed as a complete unit without tools, allowing for efficient cleaning or replacement. This extraction capability transforms a previously labor-intensive cleaning operation into a simple tool-free removal and reinstallation process.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If non-conductive shoulder washers are used for electrical isolation, then short circuit prevention is achieved, but they are susceptible to human error during installation

Engineering Contradiction:
Improveelectrical isolationVSAvoidinstallation error susceptibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The electrical isolators are merged with the mounting bracket structure, creating an integrated assembly where the isolators are permanently positioned in their correct locations. This integration eliminates the risk of human error associated with separately installing non-conductive shoulder washers, as the isolators are already in place and properly positioned before the wire feeder is attached. The combined structure ensures reliable electrical isolation while simplifying the installation process.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS11020814B2Quick-change wire feeder
Publication Date: 2021.06.01 ILLINOIS TOOL WORKS INC
  • US11020814B2 patent drawing
  • US11020814B2 patent drawing
  • US11020814B2 patent drawing

AI summary

Apparatuses, systems, and/or methods for securing and unsecuring a wire feeder in an automatic welding system without using tools are disclosed. The welding system can include, for example, a robotic arm with a welding torch, an adaptor, and a wire feeder. The adaptor can include, for example, a quick-disconnect member located on the robotic arm. The wire feeder that can be removed from the adaptor after the quick-disconnect member has been actuated. The wire feeder can be installed and secured with tools by placing the wire feeder in the actuator and actuating the quick-disconnect member of the actuator.