Color Manifold Valve Assembly Minimizing Paint Waste
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Solution Overview
Problem
Existing paint manifolds in robotic paint delivery systems often result in excessive paint waste due to the long distance paint must travel from the source to the applicator, which is inefficient and costly.
Innovation Solution
A paint manifold design featuring three valves positioned on a common plane, each with a valve tip proximate to a central fluid passage, minimizing the travel distance of paint and reducing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If paint manifolds are designed with traditional valve arrangements, then the system can provide multiple paint colors, but the paint has to travel long distances through hoses and passageways causing excessive paint waste
Solution Approach 1:
The manifold is segmented into multiple independent valve assemblies, each with its own valve body, valve tip, supply passage, and return passage. This segmentation allows each valve to be positioned optimally close to the central passage, minimizing paint travel distance while maintaining the ability to provide multiple paint colors simultaneously
Solution Approach 2:
The valve tips are nested within or proximate to the central fluid passage, with the valve rods extending through the valve bodies. The return passages are nested within the valve bodies, creating a compact arrangement that minimizes the overall paint travel path while maintaining functional independence of each color channel
2Loss of substance
If the manifold design reduces paint travel distance, then paint waste is reduced, but the manifold structure becomes more complex with valves positioned on a common plane
Solution Approach 1:
Multiple valve assemblies are merged into a single manifold body with a common plane arrangement. The valve bodies are positioned adjacently with their valve tips all converging near the central passage, combining multiple functions (multiple color selections) into a compact integrated structure that minimizes paint travel distance
Solution Approach 2:
The valves are arranged on a common plane rather than stacked vertically or distributed in three-dimensional space. This two-dimensional arrangement allows the valve tips to be positioned proximate to the central passage while maintaining easy access and simplified manufacturing, reducing complexity despite the compact configuration
3Length of stationary object
If valves are positioned close to the central fluid passage, then paint travel distance is minimized, but the sealing requirements become more stringent
Solution Approach 1:
The sealing function is extracted from the valve body and concentrated at the valve rod seal interface with the valve seat. The valve rod seal includes sealing surfaces that directly contact the valve seat, creating a reliable seal at the critical point where the valve tip meets the central passage, ensuring leak-free operation despite the compact positioning
Solution Approach 2:
The valve seat includes a hemispherical surface that works in conjunction with the valve rod seal. This curved geometry provides a larger sealing area and more reliable sealing contact compared to flat surfaces, ensuring that the valve maintains effective sealing at the reduced distance from the central passage while accommodating the compact valve arrangement
Data Source
AI summary
A paint manifold including a body having a fluid passage extending therethrough, a first valve having a valve tip positioned proximate the fluid passage, a second valve having a valve tip positioned proximate the fluid passage, and a third valve having a valve tip positioned proximate the fluid passage. The manifold also includes a paint supply passage extending through the body and being coupled to the first valve, a paint return passage extending through the body and being coupled to the first valve, a paint supply passage extending through the body and being coupled to the second valve, a paint return passage extending through the body and being coupled to the second valve, a paint supply passage extending through the body and being coupled to the third valve, and a paint return passage extending through the body and being coupled to the third valve.