Welding Wire Coil Container with Segmented Metal Cage and Cardboard Wall

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Solution Overview

Problem

Welding wires with diameters of 2.00 mm or more face difficulties in being fed through wire guiding systems due to mechanical constraints, and existing solutions like wire pushing systems have been ineffective.

Innovation Solution

A container comprising a metal cage with an octagonal cross section and a cardboard wall, where the metal cage provides mechanical stability and the cardboard wall protects against contamination, allowing for efficient handling and transportation of large-diameter welding wires, with a reduced-diameter starting portion facilitating insertion into welding equipment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If welding wire with diameter of 2.00 mm or more is used for submerged arc welding, then welding performance is improved, but the wire cannot be fed through the wire guiding system

Engineering Contradiction:
Improvewelding performanceVSAvoidwire feeding
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The container is divided into a metal cage structure and a cardboard wall structure, with each component serving specific functions. The metal cage provides mechanical strength while the cardboard wall provides protection, allowing the system to handle large-diameter wire effectively

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A dome is provided at the end of the side portion to guide the welding wire when withdrawn from the container. This intermediary component facilitates the transition of thick wire from the container to the welding equipment, solving the feeding problem

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If wire pushing systems are used to feed large-diameter wire, then wire feeding is attempted, but the solution is not convincing

Engineering Contradiction:
Improvewire feedingVSAvoidfeeding effectiveness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention extracts the wire feeding problem from the container design by providing a specialized dome structure at the container end that guides wire withdrawal. This separate guiding mechanism works independently of pushing systems, achieving reliable feeding without complex mechanical pushers

Inventive Principle:
Principle #2Taking out (Extraction)

3Strength

If a strong container structure is used to hold large-diameter wire, then mechanical strength is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvecontainer strengthVSAvoidcontainer structure
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

Different parts of the container have different properties optimized for their specific functions: the metal cage provides mechanical strength and structural support, while the cardboard wall provides protection against contamination. This local differentiation achieves overall strength without requiring the entire structure to be complex metal construction

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The container uses a composite structure combining metal cage and cardboard wall, leveraging the advantages of both materials. The metal provides strength while the cardboard provides protective qualities, achieving high strength-to-complexity ratio

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP3100814B1Container with welding wire coil
Publication Date: 2019.12.25 SIDERGAS SPA
  • EP3100814B1 patent drawingFigure 1
  • EP3100814B1 patent drawingFigure 2
  • EP3100814B1 patent drawingFigure 3

AI summary

The invention relates to a container for accommodating an amount of welding wire, having a metal cage (16) with a floor portion and a side portion extending from the floor portion, and having a cardboard wall (40) associated to the side portion of the metal cage.