Adjustable Plasma Spray Gun Arc Length Coupler
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Solution Overview
Problem
Current plasma spray guns require multiple units and extensive operational modifications to adapt to different power levels and surfaces, leading to inconvenient reprogramming of robotic arms and delays in the spraying process.
Innovation Solution
An adjustable plasma spray gun system that extends or retracts at the aft end, utilizing couplers to modify the arc length and power output without changing the standoff distance, allowing for efficient plasma spraying across a range of power modes while maintaining a fixed standoff distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple plasma spray guns are used for different power levels and surfaces, then adaptability to different spraying requirements is improved, but device complexity and operational delays increase
Solution Approach 1:
The plasma spray gun incorporates an adjustable arc length mechanism that allows the gun to dynamically change its operational characteristics. The coupler system enables the arc length to be extended or retracted, allowing a single gun to adapt to different power levels and surface requirements that previously required multiple specialized guns.
Solution Approach 2:
The invention creates a universal plasma spray gun that can perform multiple functions across different power levels and surface types. By incorporating the adjustable coupler system, one gun replaces the need for multiple specialized guns, achieving multi-functionality while reducing overall system complexity.
2Adaptability or versatility
If multiple plasma spray guns are used for different power levels and surfaces, then adaptability to different spraying requirements is improved, but operational efficiency and time consumption worsen
Solution Approach 1:
The dynamic adjustability of the arc length allows for rapid adaptation between different spraying requirements. Instead of replacing entire guns, the operator can quickly adjust the coupler configuration to change power levels and surface compatibility, significantly reducing operational delays.
Solution Approach 2:
The coupler system can be quickly detached and reconfigured between different spraying tasks. This allows for rapid recovery and reuse of the same plasma spray gun body, eliminating the time-consuming process of replacing entire gun assemblies while maintaining adaptability to different requirements.
3Adaptability or versatility
If the standoff distance is changed to adapt to different surfaces, then adaptability is improved, but the efficiency and consistency of plasma spraying deteriorates
Solution Approach 1:
The invention adjusts the local quality of the plasma spray system by modifying the arc length specifically, while keeping the standoff distance constant. This localized adjustment allows adaptation to different surfaces without compromising the overall spraying efficiency and consistency that depends on maintaining a fixed standoff distance.
Solution Approach 2:
The plasma spray gun is segmented into adjustable components (the coupler system) and fixed components (the nozzle and standoff distance). This segmentation allows independent adjustment of the arc length without affecting the standoff distance, enabling surface adaptability while maintaining spraying consistency.
4Power
If the arc length is extended to increase power output, then power level capability is improved, but the structural complexity of the plasma spray gun increases
Solution Approach 1:
The plasma spray gun is divided into modular segments: a fixed gun body and interchangeable coupler components. This segmentation allows the arc length to be extended through simple mechanical coupling rather than redesigning the entire gun structure, increasing power capability while minimizing structural complexity.
Solution Approach 2:
The coupler acts as an intermediary component between the gun body and the electrode assembly. This intermediary element enables arc length extension and power adjustment without requiring complex internal modifications to the gun body, maintaining structural simplicity while achieving higher power output capability.
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
Enables efficient plasma spraying at various power levels without reprogramming the robotic arm, reducing operational delays and allowing for fast adaptation to different surfaces and materials with maintained thermal and deposition efficiency.
Implementation Method 1
a plasma jet to heat or melt the feedstock before propelling it toward a desired surface
Implementation Method 2
The hot gas stream entrains the feedstock to which it transfers heat and momentum
Implementation Method 3
The heated feedstock is further impacted onto a surface, where it adheres and solidifies, forming a thermally sprayed coating
Data Source
AI summary
An adjustable plasma spray gun apparatus is disclosed. In one embodiment, an adjustable plasma spray gun apparatus includes: a plasma spray gun body having a fore portion and an aft portion; and a first coupler configured to removably attach to the plasma spray gun body at the aft portion, the coupler including: a first portion having a first axial opening configured to removably attach to the plasma spray gun body at the aft portion; and a second portion having a second axial opening configured to removably attach to one of an electrode body or a second coupler.