Coating Device With Internal And External Color Changers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern painting systems for motor vehicle bodies face significant color change losses and time inefficiencies due to the need to flush paint residue from long pipes when changing colors, especially when transitioning between low-runner and high-runner colors, and existing solutions with integrated color changers are limited by space and number of colors.
Innovation Solution
A coating device with both an internal color-changer valve assembly integrated into the atomizer and a separate external color-changer valve assembly configured as an A/B color changer, allowing for efficient color changes by minimizing losses and time through separate paint inlets and outlets, and incorporating recirculation valves for flushing cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an external color changer is used, then a wider range of colors can be accommodated, but color change time and paint loss increase due to longer pipe trains
Solution Approach 1:
The color changer is divided into two separate systems: an integrated color changer (ICC) with minimal pipe train for rapid color changes, and a separate external color changer for accommodating multiple colors. This segmentation allows each system to be optimized for its specific function, resolving the contradiction between color variety and color change speed.
2Adaptability or versatility
If an external color changer is used, then a wider range of colors can be accommodated, but paint consumption increases due to longer pipe train volume
Solution Approach 1:
The system segments paint delivery into two pathways: frequent colors through the ICC with minimal pipe volume for low paint loss, and less frequent colors through the external color changer. This segmentation minimizes overall paint consumption while maintaining color variety.
Solution Approach 2:
Different parts of the system have different pipe train lengths optimized for their specific usage: the ICC has minimal pipe length for colors changed frequently, while the external color changer has longer pipes acceptable for colors changed less often, reducing overall paint waste.
3Loss of time
If an integrated color changer is used, then color change time and paint loss are minimized, but the number of accommodatable colors is limited by space
Solution Approach 1:
The patent merges two color changer systems into a unified paint delivery system. The integrated color changer (ICC) provides rapid color changes for frequent colors, while the separate external color changer adds color variety. Both systems can operate independently or in combination, achieving both speed and versatility.
Solution Approach 2:
The atomizer is designed to accept paint from multiple sources (both the ICC and the external color changer), making it a multi-functional system that can handle both rapid color changes and a wide color selection, depending on operational requirements.
Data Source
AI summary
A coating device, e.g., for painting motor vehicle bodies, comprises a sprayer for applying a coating material by means of an application element and an internal color-changer valve assembly, said assembly having several color inlets for selecting coating materials of different colors. The internal color-changer valve assembly is integrated into the sprayer and is connected by its outlet to the application element, in order to feed the selected coating material to the application element. Further, an external color-changer valve assembly has several color inlets for selecting coating materials of different colors, said external color-changer assembly having a separate structure from the sprayer and being connected by its outlet to the application element, in order to feed the selected coating material to the application element. An operating method corresponds to the device.