Welding Nozzle Spray Enclosure With Baffle for Overspray Containment

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Solution Overview

Problem

Conventional anti-spatter fluid sprayers and spray containment systems require frequent maintenance, are complex to manufacture, and allow significant overspray, reducing their effectiveness and operational life in welding gun nozzle cleaning systems.

Innovation Solution

The proposed anti-spatter fluid sprayers and spray containment systems feature an enclosure with a top plate and internal baffle that blocks anti-spatter fluid from escaping, funneling it towards a drain port, reducing maintenance needs and increasing durability, and can accommodate various nozzle sizes without changing the nozzle insertion orifice, eliminating the use of o-rings for improved robustness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional spray containment systems are used, then anti-spatter fluid can be applied to welding nozzles, but the systems allow significant overspray and require frequent maintenance

Engineering Contradiction:
Improveeffectiveness of spray containmentVSAvoidcomplexity of spray containment system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spray containment system is divided into separate functional components: an enclosure for containing the spray, a baffle for blocking and redirecting fluid, and a drain port for fluid removal. This segmentation allows each component to perform its specific function efficiently while simplifying the overall system design and maintenance requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The harmful overspray is extracted and contained within the enclosure, preventing it from contaminating the welding cell. The baffle extracts and redirects the anti-spatter fluid toward the drain port, separating the useful function (applying anti-spatter fluid to the nozzle) from the harmful effect (overspray contamination).

Inventive Principle:
Principle #2Taking out (Extraction)

2Duration of action of stationary object

If conventional spray containment systems are used, then anti-spatter fluid can be sprayed onto welding nozzles, but maintenance intervals are frequent and operational life is reduced

Engineering Contradiction:
Improveoperational life of spray containment systemVSAvoidmaintenance requirements of spray containment system
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The spray containment system is designed to be self-cleaning and self-contained. The baffle automatically redirects excess fluid to the drain port without requiring manual intervention. The enclosure contains all spray-related components, allowing the system to maintain its function over extended periods without maintenance, effectively making it self-servicing.

Inventive Principle:
Principle #25Self-service

3Ease of manufacture

If conventional spray containment systems are used, then welding gun nozzles can be cleaned, but the systems are complex to manufacture

Engineering Contradiction:
Improvemanufacturing simplicity of spray containment systemVSAvoidrobustness of spray containment system
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

Each component of the spray containment system is designed with a specific local function: the enclosure provides containment, the baffle provides blocking and redirecting, and the drain port provides fluid removal. This localized functional design allows each component to be manufactured independently using simple processes, reducing overall manufacturing complexity while maintaining system reliability.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The baffle serves multiple functions simultaneously: it blocks anti-spatter fluid from escaping, redirects fluid toward the drain port, and can be designed to accommodate various nozzle sizes. This multi-functionality reduces the number of separate components needed, simplifying manufacturing while enhancing system robustness and versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Productivity

If conventional spray containment systems are used, then welding operations can proceed, but overspray reduces effectiveness and increases contamination

Engineering Contradiction:
Improveeffectiveness of welding gun cleaningVSAvoidoverspray contamination
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The baffle is positioned to preemptively block anti-spatter fluid before it can escape as overspray into the welding cell. The enclosure is designed to contain the spray at its source, preventing contamination before it occurs. This preliminary anti-action approach eliminates overspray contamination without requiring additional cleaning operations or reducing welding productivity.

Inventive Principle:
Principle #9Preliminary anti-action

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

This design significantly reduces maintenance intervals, enhances durability, and minimizes overspray, providing a low-maintenance and robust solution for containing anti-spatter fluid, improving the performance and versatility of welding gun nozzle cleaning systems.

Implementation Method 1

a baffle configured to block at least a first portion of sprayed fluid from the spray nozzle from exiting the enclosure via the nozzle insertion orifice, the first side configured to block at least a second portion of the sprayed fluid from the spray nozzle that is not blocked by the baffle

Methodology Applied
Scientific EffectFluid blocking and funneling:

Data Source

PatentEP4140606A1Spray containment systems and welding gun nozzle cleaning systems including spray containment systems
Publication Date: 2023.03.01 ILLINOIS TOOL WORKS INC
  • EP4140606A1 patent drawingFigure 1
  • EP4140606A1 patent drawingFigure 2
  • EP4140606A1 patent drawingFigure 3

AI summary

An anti-spatter spray containment system includes: an enclosure having a nozzle insertion orifice on a first side and a drain orifice on a second side of the enclosure; a spray nozzle configured to spray fluid toward a nozzle inserted into the nozzle insertion orifice, wherein the enclosure is configured to funnel the fluid in a direction toward the second side; and a baffle configured to block at least a first portion of sprayed fluid from the spray nozzle from exiting the enclosure via the nozzle insertion orifice, the first side configured to block at least a second portion of the sprayed fluid from the spray nozzle that is not blocked by the baffle.