1, spraying robot painting efficiency, coating efficiency and coating efficiency

Coating efficiency is the efficiency of spraying operation, including the effective utilization rate of spray area per unit time, paint and spray area. The coating efficiency is the ratio of the amount of paint applied to the coated object during the spraying process to the actual amount of paint sprayed, or the ratio of the measured thick film on the coated object to the thickness of the film calculated by the amount of paint sprayed, that is, the transfer efficiency of the paint (TE) or the utilization rate of the paint.

Coating efficiency refers to the ratio of the actual sprayed surface area of the coated material to the covered area of the spray gun operation; In order to make the coating film of the edge of the coated material complete, the coverage area of the general spray gun operation should be greater than the area of the coated material.

2. Spraying robot spraying trajectory

Spraying robot spraying trajectory refers to the sequence and stroke of the spray gun in the spraying process, and the spraying robot can imitate the spraying trajectory of the skilled spray painter.

3. Paint flow rate of spraying robot

Spraying robot paint flow rate is the amount of paint lost to each rotary cup per unit time, also known as spraying flow rate and paint output rate.

In addition to the rotating speed of the spinning cup, the paint flow rate is the second factor affecting the fineness of atomized particles. When other parameters are unchanged, the lower the paint flow rate, the finer the atomized particles, but at the same time, it will also lead to the increase of solvent volatilization in the paint mist.

The high flow rate of the spraying robot coating will form a corrugated coating film, and when the paint flow over the rotating cup overload, the coating film on the edge of the rotating cup thickens to a certain extent, resulting in the grooves on the rotating cup can not separate the paint, and there is a layered patent skin, which will produce bubbles or uneven paint drop size.

The maximum paint flow rate of each spray gun of the spraying robot is related to the density of the paint with the diameter and speed of the high-speed rotating cup, and its upper limit is determined by the fineness of the atomization and the effect of electrostatic coating. Practical experience shows that the coating should be input at a constant speed, and fluctuations in a small range will not affect the coating quality.

In the actual spraying process, the spraying area of each rotary cup is different, and the flow rate of the paint is also different, and the flow rate of the rotary cup is also changed due to the change of the shape of the coated object. Taking the painting of the car body as an example, when spraying a large area such as the door panel, the amount of paint emitted should be large, and when spraying the door post and window post, the amount of paint emitted should be small, and the amount of paint emitted should be automatically and accurately controlled during the spraying process, in order to ensure the quality of the coating and the uniformity of the film thickness, which is also one of the important measures to improve the utilization rate of paint.