Lost foam coating paint spraying device

The evanescent mode coating paint spraying device comprises a conveyor and further comprises a support, a cover body, a connecting plate, an air cylinder, a liquid conveying pipe, a liquid conveying pipe and a first spraying head, the support is fixed to a rack of the conveyor, the air cylinder is arranged on the support and drives the cover body to ascend and descend through the connecting plate, and the liquid conveying pipe is arranged in the middle of the air cylinder; the liquid conveying pipe is communicated with a plurality of evenly-distributed liquid feeding pipes, the liquid feeding pipes are located in the cover body, each liquid feeding pipe is provided with at least one first spray head facing the pattern die, the outer wall of the cover body is provided with a liquid discharging pipe, and the liquid conveying pipe is further provided with a second spray head located in the center of the cover body. The mold is conveyed in a continuous conveying mode, the mold is made to generate a coating in a s