Dust collecting and cleaning device for automatic spraying machine tool

The utility model discloses a dust collecting and cleaning device for an automatic spraying machine tool, and relates to the technical field of spraying machine tools, the dust collecting and cleaning device comprises a retainer, an air cylinder, a one-way air cylinder and a nozzle, one side of the retainer is fixedly connected with the air cylinder, and the other side of the retainer is fixedly connected with the one-way air cylinder and the nozzle. The internal pressure intensity of the collecting assembly is lower than the external air pressure, so that a mixture of coating and dust dripping from the interior of the shielding cover can enter the vacuum chamber through the material conveying pipe, the coating is prevented from being exposed to the position of the nozzle for a long time, and when the coating collected by the vacuum chamber enters the material storage tank to be stored, the hot air blower can blow hot air into the material storage tank; collected coating is stirred through the rolling bubbles