Flexible Welding Wire Guide Device with Ball Joints
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Solution Overview
Problem
Existing welding wire guide devices face issues with high friction, leading to stress marks, deformations, and impaired weld quality due to the rigidity and cost of current solutions, which also allow for kinking and soiling, disrupting automated welding processes.
Innovation Solution
A flexible guide device composed of individual elements connected via ball joints with low-friction guiding formations, such as ceramic rings or rolling bodies, allowing universal assembly and minimizing contact between the welding wire and the guide device, thus reducing friction and preventing kinking and soiling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid guide device is used to protect the welding wire, then the welding wire is protected from damage, but the friction increases and causes stress marks and deformations
Solution Approach 1:
The guide device is divided into multiple individual guide elements that can move independently relative to each other. This segmentation allows each element to accommodate wire movements separately, reducing cumulative friction and preventing stress marks while maintaining protection.
Solution Approach 2:
The guide elements are designed to be movable rather than fixed, allowing them to adapt dynamically to the welding wire's position and movements. This dynamic capability reduces friction by preventing rigid contact points that would otherwise cause stress marks and deformations.
2Ease of operation
If a flexible guide device is used to allow welding head movements, then the welding head mobility is improved, but the guide device becomes more complex and costly
Solution Approach 1:
The guide device consists of multiple simple individual elements rather than one complex structure. Each element is straightforward in design but collectively they provide the necessary flexibility and mobility for the welding head while keeping individual component complexity low.
Solution Approach 2:
Each guide element is designed to perform multiple functions: guiding the welding wire, accommodating wire movements, reducing friction, and contributing to the overall flexibility of the system. This multi-functionality reduces the need for additional specialized components, simplifying the overall structure.
3Ease of operation
If traditional guide elements with swivel bearings are used, then the guide device allows movement, but the structural expenditure and costs become very high
Solution Approach 1:
The complex swivel bearing mechanisms are completely removed from the design. Instead, the guide elements rely on simple geometric shapes and material properties to achieve movement capability, dramatically reducing manufacturing complexity and cost while maintaining operational flexibility.
Solution Approach 2:
The design changes from mechanical jointed structures to a system where movement is achieved through the flexibility and arrangement of individual elements. This parameter change from rigid joints to flexible assembly reduces manufacturing requirements and associated costs.
4Length of moving object
If the welding wire is bent excessively to reach the welding head, then the wire can reach the destination, but the arc runs beside the welding seam location requiring expensive rework
Solution Approach 1:
The guide elements dynamically adjust to the welding wire's path, allowing smooth transitions and reducing excessive bending. This dynamic adaptation maintains the wire's natural geometry, ensuring the arc remains aligned with the welding seam location and preventing costly rework.
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 solution provides a cost-effective, flexible guide device that minimizes friction and prevents kinking, ensuring smooth wire feeding and maintaining weld quality while protecting against soiling, thereby enhancing the reliability and efficiency of automated welding.
Implementation Method 1
the individual elements are connected to each other in the nature of a ball joint. This makes it possible in particular to lock the individual elements with each other in a simple manner by a ball head of one individual element snapping into a ball socket of the neighboring individual element
Implementation Method 2
each individual element is provided with a guiding formation for the welding wire which allows a low-friction shifting of the welding wire in the interior of the guide device
Implementation Method 3
The guiding formation may be in the form of a simple ring made of a low-friction material, for example made of ceramics, or in the form of a plurality of rolling bodies accommodated in the individual body, such as balls or cylinder rollers
Data Source
AI summary
A flexible guide device for a welding wire, formed by a plurality of individual elements which are connected to each other in an articulated manner, characterized in that the individual elements are adapted to swivel in relation to each other in any direction.