Welding Device Plug Connection Safety Mechanism
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Solution Overview
Problem
Current welding devices require complex and risky electrical connections between the power source and cooling device, necessitating specialized training and increased workload, especially when converting cooling methods or disconnecting power sources.
Innovation Solution
The welding device features a plug connection system with switches that automatically deactivate current-carrying contacts when disconnected, allowing for safe and effortless connection/disconnection without opening the housing, and includes a centering device to ensure proper alignment and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cable connections are used between power source and cooling device, then electrical connection can be established, but workload increases and safety risks arise requiring specialized training
Solution Approach 1:
The system performs automatic safety functions through self-service mechanisms: the plug connection automatically opens circuit breakers when disconnected, and the housing automatically opens interlocked circuit breakers when opened, eliminating the need for manual safety procedures by trained personnel
Solution Approach 2:
The manual operations of switching off power, opening circuit breakers, and making cable connections are merged into a single integrated plug connection action that simultaneously establishes electrical connection and activates safety mechanisms through the plug's integrated circuit breaker and interlock system
2Reliability
If power source is disconnected from voltage supply before connection manipulation, then safety is ensured, but operational efficiency decreases
Solution Approach 1:
The circuit breakers are pre-positioned in the on position and the interlock system is pre-configured to automatically open them when the housing opens, eliminating the need for preliminary manual switching off actions while maintaining safety through automated protective mechanisms
3Adaptability or versatility
If cooling device is converted or dismantled, then adaptability improves, but time consumption increases and specialized training is required
Solution Approach 1:
The cooling system is segmented into modular components (cooling device, power source, plug connection) that can be independently converted or replaced, allowing cooling method changes from water to gas cooling through simple module substitution rather than complex reassembly
Solution Approach 2:
The plug connection and housing design provide universal interfaces that work across different cooling device configurations and cooling methods, allowing the same connection mechanism to serve multiple cooling system types without requiring specialized connection procedures
Data Source
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AI summary
The invention relates to a welding device (1), comprising a power source (2) arranged in a housing (11) and a cooling unit (15) arranged in a housing (23) for cooling a welding torch (7), wherein an electrical connection (24) is provided between the power source (2) and the cooling device (15), and the electrical connection (24) between the power source (2) and the cooling unit (15) is formed by a plug connection (25) comprising at least two plug parts (26, 27) that have corresponding contacts (28, 29), wherein at least one plug part (26) of the plug connection (25) is connected to the power source (2) and at least one plug part (27) of the plug connection (25) is connected to the cooling unit (15), such that the plug parts (26, 27) of the plug connection (25) are automatically connected when the power source (2) is arranged on the cooling unit (15). According to the invention, at least current-carrying contacts (31) of the at least one plug part (26) connected to the power source (2) are deactivated when the at least two plug parts (26, 27) of the plug connection (25) are disconnected.