Ionizing Air Nozzle Assembly for Galvanometer Lens Dust Removal
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Solution Overview
Problem
Existing laser welding devices face issues with dust accumulation on the galvanometer lens due to static electricity, which cannot be automatically cleaned, leading to contamination from non-electrostatic dust like welding fumes and spatter.
Innovation Solution
A dust removal assembly that uses a nozzle with an accommodating chamber, an ionizing bar, and compressed air to eliminate static electricity and automatically clean the lens by creating a high-speed air flow, which is enhanced by a gradually decreasing flow area and a swinging mechanism for comprehensive coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If only an ionizing bar is used to eliminate static electricity, then dust adherence due to static electricity is reduced, but non-electrostatic dust (welding fumes, spatter, airborne fibers) cannot be automatically cleaned
Solution Approach 1:
The patent combines the ionizing bar (for electrostatic elimination) with a compressed air blowing mechanism (for physical dust removal) into a single integrated dust removal assembly. This merging allows the system to simultaneously address both electrostatic dust adherence and non-electrostatic dust accumulation, enabling comprehensive automatic cleaning without requiring separate systems.
Solution Approach 2:
The dust removal assembly is designed to perform multiple functions: the ionizing bar eliminates static electricity on the lens surface, while the compressed air mechanism simultaneously blows away non-electrostatic dust particles. This multi-functional design allows a single device to handle various types of dust contamination that would otherwise require different cleaning approaches.
2Ease of operation
If manual cleaning of the galvanometer lens is required, then cleaning can be performed, but productivity is reduced and operational complexity increases
Solution Approach 1:
The dust removal assembly enables the lens to be cleaned automatically without human intervention. The compressed air mechanism self-activates to blow dust particles off the lens, and the ionizing bar continuously eliminates static electricity to prevent dust adherence. This self-service capability eliminates the need for manual cleaning operations, maintaining lens cleanliness automatically during welding operations.
Solution Approach 2:
The ionizing bar continuously eliminates static electricity on the lens surface before dust can adhere, and the compressed air mechanism is positioned to immediately blow away any dust particles that attempt to settle. This preliminary action prevents dust accumulation rather than relying on periodic manual cleaning, ensuring the lens remains clean throughout operation.
3Duration of action of stationary object
If the lens is not cleaned regularly, then the device can operate continuously, but welding quality deteriorates due to dust contamination
Solution Approach 1:
The dust removal assembly operates continuously alongside the welding process. The ionizing bar maintains continuous electrostatic elimination, and the compressed air mechanism continuously blows away dust particles. This continuous action ensures the lens remains clean throughout extended welding operations, preventing quality deterioration even during prolonged use without manual intervention.
Solution Approach 2:
The system provides real-time dust removal feedback during welding operations. The compressed air mechanism responds to dust particle presence by immediately blowing them away, and the ionizing bar continuously monitors and eliminates static electricity buildup. This feedback mechanism ensures welding quality is maintained by actively counteracting dust contamination as it occurs.
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
Effectively reduces the risk of dust adherence due to static electricity and enables timely removal of non-electrostatic dust, ensuring the galvanometer lens is periodically cleaned, thereby maintaining the device's operational integrity.
Implementation Method 1
Ionic wind produced by the ionizing bar can eliminate static electricity of dust in air below the galvanometer
Implementation Method 2
the nozzle is configured to introduce compressed air to the accommodating chamber via the air inlet and exhaust the compressed air via the air outlet... the compressed air is exhausted via the air outlet to form a high-speed air flow which can blow away non-electrostatic dust
Data Source
AI summary
A dust removal assembly and a laser welding device are described. The dust removal assembly includes: a base; a nozzle, where the nozzle is disposed on the base, the nozzle includes an accommodating chamber and an air inlet and an air outlet in communication with the accommodating chamber, and the nozzle is constructed to introduce compressed air to the accommodating chamber via the air inlet and exhaust the compressed air via the air outlet; and an ionizing bar, where the ionizing bar is disposed in the accommodating chamber, and the ionizing bar is arranged between the air inlet and the air outlet.