Modular Welding Head Assembly for Flexible Multi-Torch Layout

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Solution Overview

Problem

Current hybrid laser welding devices face challenges with the management of welding wire and supporting service lines, leading to large and cumbersome welding head assemblies, and limited adjustability and space constraints for multiple torches and gas shielding in close proximity.

Innovation Solution

A modular welding head assembly composed of interconnectable functional blocks for distributing welding wire, gas, and cooling fluid, allowing for customizable configurations and improved placement of components, including laser beam, welding wire, gas, and cooling water delivery blocks, with optional sensor blocks for enhanced precision.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple welding wires, gas shielding, and cooling lines are integrated into a single welding head, then welding functionality is improved, but the size and complexity of the welding head assembly increases

Engineering Contradiction:
Improvewelding functionalityVSAvoidassembly complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The welding head assembly is divided into separate modular components including a laser handpiece module, a wire feed module, gas delivery modules, and cooling fluid delivery modules. Each module can be independently configured and assembled, allowing complex welding functionality to be achieved through combination of simpler individual components rather than integrating everything into a single complex assembly.

Inventive Principle:
Principle #1Segmentation

2Productivity

If multiple welding torches are placed in close proximity, then welding efficiency is improved, but space constraints and interference between torches increase

Engineering Contradiction:
Improvewelding efficiencyVSAvoidtorch placement space
Core Design Contradiction:
ProductivityVSArea of stationary object

Solution Approach 1:

By separating the welding system into modular components (laser handpiece, wire feed modules, gas delivery modules), multiple torches can be configured with optimized spacing and orientation. Each module can be positioned independently to minimize interference between adjacent torches while maintaining close proximity for efficient multi-torch welding operations.

Inventive Principle:
Principle #1Segmentation

3Device complexity

If a monolithic torch design is used, then structural simplicity is improved, but adjustability of component placement and work angles is limited

Engineering Contradiction:
Improvestructural simplicityVSAvoidadjustability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The modular architecture allows dynamic reconfiguration of the welding head assembly. Individual modules can be adjusted, repositioned, and reoriented relative to each other to optimize component placement and work angles for different welding applications, providing adaptability that fixed monolithic designs cannot achieve.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The separation into modular components enables independent adjustment of each module's position and orientation. This segmentation allows the system to adapt to various welding configurations and angles while maintaining structural simplicity within each individual module.

Inventive Principle:
Principle #1Segmentation

4Device complexity

If welding wire and service lines are managed in a traditional integrated manner, then connection simplicity is improved, but maneuverability of the welding head deteriorates

Engineering Contradiction:
Improveconnection simplicityVSAvoidmaneuverability
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

By separating wire feed, gas delivery, and cooling fluid delivery into individual modular modules, each with its own connection interfaces, the system achieves both connection simplicity and improved maneuverability. Each module can be independently positioned and connected, reducing the bulk and complexity of integrated traditional designs while maintaining straightforward connection procedures.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3641981B1Modular welding head assembly
Publication Date: 2023.04.19 ESAB AB
  • EP3641981B1 patent drawingFigure 1
  • EP3641981B1 patent drawingFigure 2
  • EP3641981B1 patent drawingFigure 3A~3C

AI summary

The present disclosure relates to a system of modular functional blocks that may be used to facilitate easy assembly of a welding head assembly in any one of a wide variety of configurations to allow for distribution of welding wire, gas, cooling fluid and other media throughout an interconnected assembly of the modular functional blocks. As such, the modular functional blocks can be mixed and matched into any desired configuration as needed depending on the welding process being undertaken. The modular functional blocks may be in the form of one or more different welding wire delivery blocks, gas delivery blocks, cooling water delivery blocks, shim plates, end plates, shield cup, cover plates, insulating plates, etc.