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Optimization method for thickness uniformity of irregular planes and polygonal coating layers by electrostatic spraying robot

A technology of electrostatic spraying and coating thickness, applied in liquid spraying equipment, spraying devices, etc., can solve the problems of reducing spraying operation efficiency, paint waste, and uniformity not reaching the target.

Inactive Publication Date: 2019-02-15
JIANGSU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the robot spraying process, the uniformity of the coating thickness on the surface of the workpiece directly affects the spraying quality of the workpiece. If the uniformity does not meet the target, re-painting may be required, which will not only cause waste of paint, but also reduce the efficiency of spraying operations

Method used

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  • Optimization method for thickness uniformity of irregular planes and polygonal coating layers by electrostatic spraying robot
  • Optimization method for thickness uniformity of irregular planes and polygonal coating layers by electrostatic spraying robot
  • Optimization method for thickness uniformity of irregular planes and polygonal coating layers by electrostatic spraying robot

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Embodiment Construction

[0072] 1. Establish the mathematical model of spray gun trajectory and the spatial distribution model of paint

[0073] 1.1. Assume that the workpiece is stationary, and use the Cartesian coordinate system XYZ to describe its position and shape. Suppose the workpiece surface can be expressed as a function z=h(x, y). From the general set concept, the function expression of the workpiece surface can be defined as:

[0074] S={(x,y,z)|z=h(x,y),(x,y)∈D}

[0075] Among them, the mapping h: D→R (real number field), the domain of definition

[0076] The pose is represented by the Cartesian coordinate system XYZ, and the three-dimensional vector functions P(t) and 0(t) are respectively used to represent the position and direction of the spray gun in the fixed Cartesian coordinate system. The relationship between these two vectors and time t can be expressed as for:

[0077] P(t)=[p x (t), p y (t), p z (t)]

[0078] O(t)=[o x (t), o y (t), o z (t)]

[0079] Among them, th...

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Abstract

The invention discloses an optimization method for the thickness uniformity of irregular planes and polygonal coating layers by an electrostatic spraying robot. Firstly, a spraying gun trajectory mathematical model is built; then, a space distribution model of paint, a translation schematic diagram of a static-state distribution model and a section thickness chart of a translation model are built;according to comparison with data obtained by a double-variable Cauchy distribution model, a double-variable Gaussian distribution model and an offline experience, a traditional elliptical double-beta model is finally built; and finally, the spraying joint is performed for multiple times of spraying, that is, the thickness uniformity of paint films is improved through selection of a gap d betweentravels.

Description

technical field [0001] The invention relates to a method for spraying irregular polygons by a spraying robot, which is mainly aimed at optimizing the uniformity of coating thickness. Background technique [0002] Electrostatic spraying is a new technology based on the combination of traditional spraying and electrostatic effect. Applying electrostatic spraying technology to spraying robots has the best economic benefits and is widely used in domestic and foreign automobile coating production lines. It not only improves the quality of products Quality and output, but also to ensure personal safety, improve working conditions, reduce labor intensity, reduce production costs and reduce environmental pollution. In the robot spraying process, the uniformity of the coating thickness on the surface of the workpiece directly affects the spraying quality of the workpiece. If the uniformity does not meet the target, re-painting may be required, which will not only cause waste of paint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B5/08B05B12/08B05B12/12
CPCB05B5/08B05B12/084B05B12/122B05B12/124
Inventor 赵德安许刚季松林
Owner JIANGSU UNIV
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