Filling device for plastic product coating

The utility model discloses a filling device for plastic product paint, and relates to the technical field of paint production. A mounting plate is fixedly mounted on the left side surface of the support frame; a hydraulic cylinder is fixedly mounted on the lower surface of the mounting plate; a connecting plate is fixedly connected to the lower end of the hydraulic cylinder; a spray gun is fixedly mounted on the lower surface of the connecting plate; a liquid proportional valve is fixedly installed on the feeding pipe, a fixing plate is fixedly installed on the conveying belt, and a proximity switch is fixedly installed on the front end face of the fixing plate. The paint barrel is adjusted to the middle position of the conveying belt through the guide module, the paint barrel and the spray gun are located on the same axis, the hydraulic cylinder drives the spray gun to move downwards to the position slightly lower than the barrel opening of the paint barrel, paint is injected into the paint barrel, paint sp