Rotary Atomization Head Groove Depth Variation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In coating devices with rotary atomization heads, adjacent threads of coating material can unify, degrading the atomization function due to contact.
Innovation Solution
A rotary atomization head with grooves of varying depths on its outer edge, arranged radially, ensures that adjacent discharge positions of coating material threads are shifted axially, preventing contact while maintaining consistent thread diameters through equal groove widths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If grooves are formed on the outer edge part to discharge coating material as threads, then the coating material can be pulverized and applied to the object to be coated, but adjacent threads may make contact and unify, degrading the atomization function
Solution Approach 1:
The patent applies asymmetry by forming grooves with different depths at different circumferential positions on the outer edge part of the rotary head. Specifically, the groove depth varies periodically around the circumference, causing threads discharged from different grooves to have different lengths. This asymmetric depth configuration prevents adjacent threads from making contact and unifying, thereby maintaining the atomization function while enabling efficient coating material application.
2Reliability
If groove depths are made different to prevent thread contact, then thread unification is prevented, but manufacturing complexity increases
Solution Approach 1:
The patent implements parameter changes by systematically varying the groove depth parameter around the circumference of the rotary head. The groove depth follows a periodic pattern where adjacent grooves have different depths, creating the necessary thread length variation to prevent contact. This controlled parameter variation achieves the anti-unification effect while maintaining manufacturability through regular, repeatable patterns.
3Manufacturing precision
If groove widths are kept equal to maintain uniform thread diameters, then coating uniformity is improved, but the ability to prevent thread contact is reduced
Solution Approach 1:
The patent applies local quality by differentiating groove characteristics at different locations. Specifically, while groove widths are kept substantially equal to ensure uniform thread diameters and coating uniformity, the groove depths are made different at different circumferential positions. This local differentiation in depth (not width) creates the necessary thread length variation for contact prevention while maintaining the width-based uniformity for consistent coating quality.
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
Prevents thread contact and unification, enhancing the atomization process by maintaining uniform thread diameters and improving coating quality through effective pulverization.
Implementation Method 1
a diffusion surface configured to diffuse the coating material toward an outer edge part by centrifugal force
Implementation Method 2
a plurality of grooves formed on the outer edge part. The plurality of grooves is configured to extend in a radial direction
Data Source
AI summary
A rotary atomization head is provided, which prevents discharged threads of a coating material from making contact with each other and from being unified. A rotary head 1 includes: a diffusion surface 122 to diffuse the coating material toward an outer edge part 123 by centrifugal force; and a plurality of grooves 124 formed on the outer edge part 123. The plurality of grooves 124 extends in a radial direction. The adjacent grooves 124 have different depths. The grooves 124 have the same width.