Rotary Atomizing Head Shaping Air Ring Isolation
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Solution Overview
Problem
The rotary atomizing head type coating machines suffer from paint particles floating around the shaping air ring, leading to contamination and quality defects, necessitating frequent cleaning that increases costs and reduces productivity.
Innovation Solution
Incorporating an overhanging portion or flange unit as an isolation means around the shaping air jetting unit to prevent paint particles from adhering to the shaping air ring, thereby eliminating the need for regular cleaning and reducing cleaning costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shaping air is ejected from the shaping air ejection section to shape paint particles, then uniform coating thickness distribution is achieved, but paint particles float around the shaping air ring and accumulate on the front portion causing quality defects
Solution Approach 1:
A shield member is introduced as an intermediary component between the shaping air ring and the front portion area. This shield member intercepts and redirects floating paint particles, preventing them from accumulating on the front portion while maintaining the shaping air function for uniform coating distribution.
Solution Approach 2:
The shaping air ring structure is segmented by adding a shield member that creates distinct functional zones. The shield member divides the space into a shaping air ejection zone and a protected front portion area, allowing independent control of paint flow and air flow paths.
2Manufacturing precision
If cleaning is performed periodically to remove paint accumulation, then quality defects are prevented, but productivity is reduced and cleaning costs increase
Solution Approach 1:
The shield member is installed in advance to prevent paint accumulation before it occurs. By proactively blocking the path of floating paint particles, the system eliminates the need for subsequent cleaning operations, maintaining continuous production without interruptions.
Solution Approach 2:
The shield member converts the harmful effect of floating paint particles into a beneficial outcome by redirecting them away from critical areas. The paint particles that would otherwise cause quality defects are now redirected to safe areas, eliminating the need for cleaning while maintaining coating quality.
3Ease of operation
If an automatic cleaning device is provided to clean the shaping air ring, then cleaning work is automated, but installation cost and thinner consumption increase
Solution Approach 1:
The cleaning function is extracted and replaced by a passive structural component - the shield member. Instead of using an active cleaning system that requires automation and consumables, the design extracts the preventive function into a simple geometric feature that passively redirects paint particles without requiring any operational intervention.
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 configuration effectively suppresses contamination of the shaping air ring, enhancing productivity by eliminating cleaning work and reducing cleaning costs.
Implementation Method 1
an air motor using compressed air as a power source
Implementation Method 2
a cup-shaped rotary atomizing head attached to the front part of the rotating shaft and discharging paint supplied from the feed tube from the discharge edge at the front end
Implementation Method 3
a shaping air ejection section provided in front of the shaping air ring and ejecting shaping air toward the paint discharged from the discharge edge of the rotary atomizing head
Data Source
AI summary
A cylindrical shaping air ring provided on an outer periphery of a rotary atomizing head, includes an overhanging portion as an isolation means for isolating a second shaping air jetting unit from the air flowing around the shaping air ring.