Coating spraying device for mobile phone shell

The utility model belongs to the technical field of mobile phone shell processing, and particularly relates to a coating spraying device for a mobile phone shell, which comprises a workbench, one sideof the workbench is provided with a driving roller, and the other side is provided with a third driven roller; the driving roller and the third driven roller are respectively arranged in the conveying belt; baffles are arranged on the top end surface of the conveyor belt; an arc-shaped groove is formed in the workbench; a spray gun is suspended above the conveyor belt and is communicated with a coating tank; a sliding rod is further fixedly arranged on the workbench and sleeved with a sliding block, a cross beam is horizontally and fixedly arranged on the sliding block, an arc-shaped cover isfixedly arranged on the cross beam and connected with one end of a hose, and the other end of the hose is sequentially communicated with an exhaust fan and an oxidation tank. The arc-shaped cover isarranged above the conveyin