Novel non-Newtonian fluid micro-coating system and control method

Abstract

The invention discloses a novel non-Newtonian fluid micro-coating system, which comprises a non-Newtonian fluid material loading mechanism, a fluid modeling unit and an intelligent feedback coating control unit, wherein the non-Newtonian fluid material loading mechanism comprises a material storage pressure barrel internally provided with a pressure regulating valve, and an ejector pin valve typenozzle connected by means of a feeding pipeline; the pressure regulating valve controls the air pressure of the material storage barrel, and the fluid can be pressed into a feeding pipeline and then sprayed out by means of the nozzle; the fluid modeling system is responsible for performing process analysis on non-linear characteristics of the non-Newtonian fluid and dynamically modeling a micro-coating process; the intelligent feedback coating control system comprises an upper computer, a signal input module, a controller, a controlled object module, a detection unit and an execution module, and is responsible for performing feedback control on the flow velocity of pipeline fluid based on a non-Newtonian fluid model. The novel non-Newtonian fluid micro-coating system solves the problem that feedback control is not carried out according to fluid nonlinear features in the existing micro-coating process, and can be applied to various surface coating processes such as paint spraying and fluorescent powder glue coating.

Description

technical field [0001] The invention relates to the research field of automatic spraying, in particular to a novel non-Newtonian fluid micro-coating system and a control method. Background technique [0002] The pre-coating process continues to develop and improve, and users have higher and higher requirements for the accuracy of the coating effect. In the field of automated coating, the requirement of consistent uniformity of workpiece spraying is especially important. Whether it is the painting process in the automotive industry or the phosphor coating process in the high-power white LED industry, whether the coating effect is consistent or not affects the final aesthetics, practicability and product qualification rate of the product. [0003] Most of the spraying materials in the field of daily life and production coating are non-Newtonian fluid materials. The modeling and control of Newtonian fluids is more complex; and the micro-coating process of non-Newtonian fluids...

AI Technical Summary

Problems solved by technology

[0003] Most of the spraying materials in the field of daily life and production coating are non-Newtonian fluid materials. The modeling and control of Newtonian fluids is more complex; and the micro-coating process of non-Newtonian fluids is a nonlinear, multi-variable coupling system, and the fluid flow rate and flow rate are affected by many factors and cannot maintain a high degree of uniformity

The traditional use of artificially determined empirical parameter control is not reliable and inefficient

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