Preheating device for PVD coating processing

The utility model relates to a preheating device for PVD (Physical Vapor Deposition) coating processing, which belongs to the technical field of coating equipment and comprises a coating machine main body, the lower surface of the upper end of the coating machine main body is fixedly connected with a first cylinder, the telescopic end of the first cylinder is fixedly connected with coating equipment, and the upper surface of the coating equipment is communicated with one end of a second liquid pipe. A support is fixedly connected to the outer wall of the right side of the coating machine body, and a preheating cylinder is arranged on the upper surface of the support. The PVD coating preheating device has the advantages that power is supplied to the electric heating layer, so that the electric heating layer generates heat, the temperature in the preheating cylinder is increased, the spiral scraping blade is driven by the output end of the motor to rotate, the spiral scraping blade can scrape PVD coating attach