Gradient color spraying preparation method of artificial leather product for vehicle

The invention provides a gradient color spraying preparation method of an artificial leather product for a vehicle, artificial leather is subjected to gradient color spraying by adopting a multi-roller spraying device, and the gradient color spraying preparation method of the artificial leather product for the vehicle comprises the following steps: blending a first main color pigment, a second main color pigment and a coating into a plurality of coating agents according to different proportions, a coating agent is injected into the corresponding nozzle component; the artificial leather sequentially penetrates through a tension roller, a fixed roller and a guide roller, and the opening end is fixed to a driving roller; the driving assembly drives the driving roller to rotate, so that the artificial leather moves from the discharging roller to the driving roller, and the surface of the part of the artificial leather which is located on the surface of the fixed roller and located below the spraying assembly is a