Electrostatic Coating Intermediate Storage Device Cleaning Mechanism
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Solution Overview
Problem
Conventional electrostatic coating systems face inefficiencies in cleaning the intermediate storage device, particularly due to paint viscosity variations and the need for adjusted cleaning fluid supply pressures and positions, which prolong cycle times and lead to mixing of different paint colors.
Innovation Solution
An electrostatic coating system with a cylinder and piston mechanism that uses two holes for cleaning fluid supply and discharge, with different opening diameters to optimize fluid flow and pressure, and a displacement mechanism to adjust the piston position based on pressure changes, ensuring efficient cleaning and uniform paint distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cleaning fluid is supplied from a single injection hole to clean the cylinder chamber, then the cleaning process is simple, but the cleaning efficiency is low and side parts are not adequately cleaned
Solution Approach 1:
The single injection hole is segmented into multiple injection holes positioned at different locations within the cylinder chamber. This allows cleaning fluid to be supplied to multiple areas simultaneously, improving cleaning efficiency and ensuring thorough coverage of all parts including side parts, while maintaining system simplicity
2Productivity
If cleaning fluid supply pressure is increased to improve cleaning speed, then cleaning efficiency improves, but paint viscosity variations cause improper cleaning and color mixing
Solution Approach 1:
Different injection holes are supplied with cleaning fluid at different pressures according to local requirements. The control device adjusts supply pressure for each injection hole based on paint viscosity and position, ensuring optimal cleaning quality throughout the cylinder chamber without causing color mixing, while maintaining high cleaning speed
3Reliability
If cleaning time is extended to ensure thorough cleaning, then color mixing is prevented, but cycle time increases and productivity decreases
Solution Approach 1:
Multiple injection holes supply cleaning fluid simultaneously and continuously to different parts of the cylinder chamber, maintaining effective cleaning action throughout the entire volume. This parallel cleaning approach achieves thorough cleaning in shorter time, preventing color mixing without extending the cycle time
4Reliability
If piston depression position is adjusted to optimize cleaning for different paint types, then cleaning quality improves, but system complexity increases
Solution Approach 1:
The piston depression position is made dynamically adjustable through a control device that automatically positions the piston according to paint viscosity and cleaning requirements. This dynamic adjustment mechanism optimizes cleaning quality for different paint types without requiring complex manual adjustment procedures
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 solution enables efficient cleaning of the intermediate storage device by uniformly distributing cleaning fluid and reducing paint viscosity, thereby improving cleaning efficiency and preventing paint color mixing, regardless of paint type.
Implementation Method 1
the cleaning fluid flows into a discharge hole while extruding the paint remaining in the cylinder chamber
Implementation Method 2
a piston (e.g., the below-described piston 12) which can slide inside a cylinder chamber (e.g., the below-described cylinder chamber 14) of the cylinder
Data Source
AI summary
The invention provides an intermediate storage device of an electrostatic coating system that can clean efficiently, a method for cleaning the same, and a method for coating. An intermediate storage device 10 comprises: a first hole 141 which is open to a cylinder chamber 14 and is connected to a paint supply source; a second hole 142 which is open to the cylinder chamber 14 and is connected to a coating gun; and a switch means which switches between a first cleaning which cleans the cylinder chamber 14 by supplying cleaning fluid W from the first hole 141 and discharging from the second hole 142 waste fluid that has undergone cleaning and a second cleaning which cleans the cylinder chamber 14 by supplying cleaning fluid W from the second hole 142 and discharging from the first hole 141 waste fluid that has undergone cleaning.