Plasma Torch Head Coupling With Multi-Stage Alignment
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Solution Overview
Problem
Conventional plasma arc torch systems require complex and time-consuming installation and maintenance processes due to multiple discrete connections, necessitating skilled technicians for disconnection and reconnection of torch leads.
Innovation Solution
A plasma torch head with multi-stage alignment features, including coarse and fine radial and rotational alignments, and multi-start threads for faster and easier engagement with the torch receptacle, simplifying the connection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple discrete connections are used for gas, coolant, and electrical current transfer, then reliable fluid and electrical connections are achieved, but installation and maintenance become difficult and time-consuming
Solution Approach 1:
The patent combines multiple discrete connections (gas, coolant, electrical current) into a single integrated torch receptacle assembly. The receptacle simultaneously establishes fluid connections through sealed interfaces and electrical connections through contact points, allowing all connections to be made in one coupling action rather than multiple separate steps.
Solution Approach 2:
The torch receptacle is designed as a multi-functional component that performs multiple functions: it serves as a fluid seal interface, an electrical connection point, and a mechanical mounting structure. This universal design consolidates what were previously separate discrete connectors into a single unified interface.
2Reliability
If multiple discrete connections are used for gas, coolant, and electrical current transfer, then reliable fluid and electrical connections are achieved, but maintenance requires skilled technicians and increases downtime
Solution Approach 1:
By merging multiple connection functions into a single receptacle assembly, the patent enables maintenance personnel to disconnect and reconnect the torch in one action. This eliminates the time-consuming process of individually disconnecting and reconnecting multiple hoses and electrical leads, significantly reducing maintenance downtime.
Solution Approach 2:
The receptacle is pre-configured with alignment features and integrated connection points that guide the torch into proper positioning before final engagement. This preliminary alignment reduces the skill level required for maintenance and accelerates the reconnection process.
3Strength
If conventional threaded connectors are used for each connection, then secure mechanical attachment is achieved, but the complexity of multiple independent connections increases
Solution Approach 1:
The patent merges multiple threaded connectors and sealing interfaces into a single integrated receptacle body. Instead of having separate threaded connections for gas, coolant, and electrical leads, all these functions are combined into one coupling interface that maintains secure mechanical attachment while reducing overall connection complexity.
Solution Approach 2:
The receptacle internally segments different connection functions (fluid passages, electrical contacts, mounting features) into distinct zones within a single unified structure. This segmentation allows each function to be optimized independently while presenting a simplified external interface.
Data Source
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Figure 3A~3B
AI summary
In some aspects, a plasma torch head for a plasma arc torch can include ports disposed within a base portion that are configured to receive fluids and electrical signals from a plasma torch lead via a plasma torch receptacle, the ports being shaped to align the torch head and the plasma torch receptacle during connection and including: a central coolant supply port to convey a liquid coolant to the torch head, the central coolant supply port extending a length to primarily align the plasma torch head with the torch receptacle, the central coolant supply port further including a flat surface shaped to secondarily align the torch head with the torch receptacle upon mating engagement, and an ohmic contact connector defining a tertiary alignment feature; and a connector disposed about the base portion shaped to engage with and couple to the torch receptacle.