Dosing Piston Mixing System for Coating Agents
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Solution Overview
Problem
Existing mixing systems for coating agents require scales to measure filling quantities, leading to inefficiencies and inaccuracies, and are not suitable for a wide range of viscosities or numbers of components.
Innovation Solution
A mixing system with a shuttle valve arrangement and dosing cylinder, where a displaceable dosing piston is used to select and mix multiple coating agent components without temporal overlap, utilizing a dosing drive with high angular resolution for precise measurement and a static mixer for uniform mixing, capable of handling various viscosities and component combinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If scales are used to measure filling quantities in existing mixing systems, then measurement can be achieved, but the system becomes less efficient and less accurate
Solution Approach 1:
The patent replaces the mechanical scale-based measurement system with a dosing piston system that uses controlled displacement volume to measure and deliver precise quantities of coating components. The dosing piston's position and movement are controlled to deliver exact volumes without requiring scales, thereby improving both measurement accuracy and mixing efficiency.
2Manufacturing precision
If a dosing piston system is used to mix coating components, then dosing accuracy is improved, but the system complexity increases
Solution Approach 1:
The dosing piston system serves multiple functions: it acts as both a mixing element and a dosing/measuring device. By integrating the dosing function into the piston's displacement mechanism rather than requiring separate measurement and mixing components, the system achieves high dosing accuracy while minimizing overall system complexity.
3Manufacturing precision
If multiple coating components are mixed sequentially without temporal overlap, then mixing precision is improved, but the mixing time increases
Solution Approach 1:
The system uses periodic reciprocating movement of the dosing piston to sequentially introduce different coating components into the mixing chamber. The piston moves back and forth, creating periodic cycles of component introduction and mixing. This periodic action ensures precise sequential mixing without temporal overlap of components while maintaining efficient cycle times through optimized piston movement patterns.
Data Source
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AI summary
The invention relates to a mixing system for mixing several components (e.g., coating material components) in a predetermined mixing ratio to form a mixture (e.g., a coating material mixture, such as a 2K paint). The mixing system according to the invention comprises a changeover valve arrangement (2) with several inlets (3), each with an individually controllable inlet valve (4) for supplying the components to be mixed, and a common outlet (6) for sequentially dispensing the components to be mixed.Furthermore, the mixing system according to the invention provides a metering cylinder (8) at the outlet (6) of the changeover valve assembly (2), wherein the metering cylinder (8) has a movable metering piston (9) and receives the components to be mixed from the outlet (6) of the changeover valve assembly (2) in a defined quantity according to the piston movement of the metering piston (9) and combines them in the metering cylinder (8) to set the predetermined mixing ratio. The invention further comprises a corresponding mixing method.