The paint flow rate of a spraying robot is the amount of paint delivered to each rotary cup per unit time, also known as the spraying flow rate or paint output rate. So how is the paint flow rate calculated?

In addition to the rotational speed of the rotary cup, the coating flow rate is the second factor that affects the fineness of atomized particles. When other parameters remain constant, the lower the coating flow rate, the finer the atomized particles, but at the same time, it can also lead to an increase in solvent evaporation in the paint mist.

A high flow rate of paint in the spraying robot will form a wavy coating. At the same time, when the paint flow rate is too high and the rotary cup is overloaded, the coating on the edge of the rotary cup thickens to a certain extent, causing the grooves and patterns on the rotary cup to prevent the paint from flowing and resulting in layered paint, which can cause adverse phenomena such as bubbles or uneven droplet sizes.

The paint flow rate of each spray gun of the spraying robot is related to the diameter and speed of the high-speed rotary cup, as well as the density of the paint. Its upper limit is determined by the fineness of atomization and the effect of electrostatic coating. Practical experience has shown that coatings should be input at a constant speed, and fluctuations within a small range will not affect the quality of the coating film.

In the actual spraying process, the spraying robot sprays different areas on each rotary cup, and the flow rate of the coating is also different. In addition, due to changes in the shape of the object being coated, the flow rate of the coating on the rotary cup also changes. Taking the spraying of car bodies as an example, when spraying large areas such as door panels, the amount of paint sprayed should be large, while when spraying door pillars and window pillars, the amount of paint sprayed should be small. Only by automatically and accurately controlling the amount of paint sprayed during the spraying process can the quality and thickness of the coating be ensured, which is also one of the important measures to improve the utilization rate of the coating.