Modular Trailing Gas Nozzle for Curved Weld Seam Coverage
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Solution Overview
Problem
Existing gas nozzles for welding torches are limited in their ability to adapt to different tube diameters, requiring multiple nozzles for various sizes, and struggle to efficiently cover curved or straight weld seams with a uniform gas flow.
Innovation Solution
A modular gas nozzle design featuring adjustable segments with varying contact angles allows for curvature adjustment to match the weld seam, ensuring a constant distance and uniform gas coverage, using a combination of wedge and middle segments with gas distributors and cooling conduits for efficient gas flow and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed diameter gas nozzle is used, then the nozzle structure is simple, but it can only cover a fixed diameter range and requires multiple nozzles for different tube sizes
Solution Approach 1:
The gas nozzle is divided into multiple segments (at least three segments: first, second, and third segments) that can be rotated relative to each other around a central axis. Each segment has a discharge surface that can be oriented at different angles, allowing the nozzle to adapt to various tube diameters and weld seam curvatures without requiring multiple fixed-diameter nozzles.
2Adaptability or versatility
If a straight discharge area is used, then the nozzle structure is simple, but it cannot efficiently cover curved weld seams with uniform gas flow
Solution Approach 1:
The nozzle segments are designed to be rotatable relative to each other, allowing dynamic adjustment of the discharge surface angles. This enables the discharge area to be oriented perpendicular to curved weld seams, ensuring uniform gas flow coverage across different weld geometries while maintaining a relatively simple segmented structure.
Data Source
AI summary
The present invention relates to a trailing gas nozzle (1) for a welding torch, comprising an elongated body (10) comprising an internal space (11) for receiving a trailing gas (G), and an elongated discharge area (12) on a bottom side of the body (10) for discharging the trailing gas (G) onto a weld seam (S). The body (10) comprises a plurality of segments (101, 102, 103) connected to one another contact surfaces so that a curvature of the discharge area (12) is adjustable to a desired curvature.