Dust removal device of coating machine

The utility model provides a dust removal device of a cladding machine, which belongs to the technical field of cladding machines and comprises a rack and supporting legs connected to the bottom of the rack, a U-shaped fixing plate is connected to the upper portion of the rack, an extrusion mechanism used for coating an article with a film is arranged between the U-shaped fixing plate and the rack, a dust removal area is arranged in the U-shaped fixing plate, and the dust removal area is connected with the supporting legs. A dust removal assembly used for cleaning the surfaces of objects is arranged in the dust removal area. The dust removal assembly comprises an air conveying pipe which penetrates through the U-shaped fixing plate in the width direction of the U-shaped fixing plate and is fixedly connected to the U-shaped fixing plate. The lower portion of the air conveying pipe is connected with an obliquely-arranged guide spray head. Dust or liquid on the surface of an object can be removed in the object f