Plasma surface treatment machine with temperature control discharge roller

The utility model belongs to the technical field of material surface treatment, and particularly relates to a plasma surface treatment machine with a temperature control discharge roller, which comprises a support, a discharge roller, a plasma generating component, a main temperature control component and a temperature sensor. The support comprises two opposite supporting parts, and a containing cavity is formed between the two supporting parts. The discharge roller is installed in the containing cavity, the two ends of the discharge roller are rotatably installed on the supporting parts so that the discharge roller can rotate relative to the supporting parts in the set direction and can rotate to the bearing position of the bearing material, a cooling cavity is formed in the discharge roller, and a liquid inlet hole and a liquid outlet hole are formed in the cavity wall of the cooling cavity; the plasma generation assembly can discharge towards the roller body to generate plasma; the main temperature control