Modular Coating Apparatus Head for Maintenance Access
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Solution Overview
Problem
Conventional rotary atomization coating apparatuses are cumbersome to repair and adjust, with integrated designs requiring detachment from robot arms, making maintenance time-consuming, and suffer from unstable air nozzle directionality leading to coating pattern issues and potential contamination.
Innovation Solution
A modular design dividing the coating apparatus into a body part and a detachable head part with a connection system for easy repair and adjustment, transparent channels for visual inspection, and strategically positioned air nozzles to stabilize air flow and prevent whirlpools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the coating apparatus is entirely integrated, then the structure is compact, but it is necessary to detach the entire coating apparatus from the robot arm when repair or adjustment is needed, taking time
Solution Approach 1:
The coating apparatus is divided into a body part and a head part that can be detached from each other. The head part, which contains the rotary atomization head and air nozzles, can be separated from the body part for convenient maintenance and adjustment without detaching the entire apparatus from the robot arm.
2Reliability
If a channel is provided in the housing, then air and coating can circulate, but the inside of the channel is hardly checked and the outer diameter increases
Solution Approach 1:
The channels are made transparent instead of opaque, allowing visual inspection of the inside of the channels to check air and coating circulation. This transparency enables easy detection of blockages or issues within the channels without disassembling the housing.
3Device complexity
If the top face is approximately flat with two air nozzles formed thereon, then the structure is simple, but the direction to which air is ejected from the external air nozzle is unstable whereby the coating pattern is hardly set
Solution Approach 1:
The external air nozzle is designed with an asymmetric structure featuring a inclined surface and a groove. This asymmetric geometry guides the air flow in a controlled direction, ensuring stable air ejection and consistent coating pattern formation, unlike symmetric flat surfaces.
Solution Approach 2:
The external air nozzle incorporates a curved inclined surface and groove structure that shapes the air flow path. This curvature guides the air flow smoothly in a predetermined direction, preventing instability and ensuring consistent coating pattern.
4Reliability
If the external air nozzle is located at the rear side of the internal air nozzle with a step formed between them, then air flow path is defined, but the step generates whirlpools in the flow of air ejected from the external air nozzle, causing back whirlpools that may contaminate the coating nozzle
Solution Approach 1:
The external air nozzle is designed with a curved inclined surface and groove that smoothly guides air flow without creating abrupt changes in direction. This curved geometry prevents the formation of whirlpools and back whirlpools that would otherwise contaminate the coating nozzle.
Solution Approach 2:
Instead of having a step that creates harmful whirlpools, the design uses a curved surface and groove that converts the potential harmful air flow into a beneficial controlled flow pattern, eliminating contamination while maintaining air flow path control.
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
Facilitates efficient maintenance and adjustment without detaching the entire apparatus from robot arms, allows for easy inspection of air and coating channels, and ensures stable coating patterns by preventing whirlpools and contamination.
Implementation Method 1
a cascade (41) that boosts and outputs electric power
Implementation Method 2
applying a high voltage thereto. This leads a liquid coating to be charged
Implementation Method 3
atomized, and then sprayed from the top of the rotary atomization head
Data Source
AI summary
The coating apparatus comprises a body part, a head part detachably installed to this body part, and a connecting ring connecting the body part with the head part. The body part is provided with a cascade that boosts and outputs electric power and a plurality of tubes and a passage in which at least one of the optical signal, air, and coating circulates. The head part is provided with the rotary atomization head, an electric power transmission line that transmits the electric power output from the cascade, and a passage. On the connecting face of the body part, at least part of the cascade projects, and third port of the passage is exposed. On the connecting face of the head part, the electric power transmission line is connected, and a cascade insertion part in which the projected part of the cascade is inserted is formed, and a fourth port connected to the third port.