PLC automatically controls environmentally friendly internal sprayer

The utility model relates to the technical field of packaging machinery, in particular to a PLC automatic control environment-friendly internal spraying machine for spraying paint on the inner surface of a packaging steel drum. The spray gun is connected with a reciprocating device installed on the base, and a rotary positioning device is arranged on the base, below the spray gun, and the positioning plate on the rotary positioning device is matched with the bottom end of the steel bucket to be sprayed; A water curtain circulation device is arranged on the opposite side of the base of the spray gun, the water curtain purification zone of the water curtain circulation device is directly opposite to the spray zone, and the spraying adjustment of the internal sprayer is controlled by a PLC controller installed on the base. control. After adopting such a structure, the steel barrel can be effectively positioned by matching the positioning plate with the bottom end of the corresponding steel barrel, and the operation is simple and convenient; and the spray gun is automatically controlled by the PLC controller to achieve uniform spray painting, no sagging and no accumulation, The interior finish of the spray coating is high, and the utility model is also provided with a water curtain circulation device, thereby effectively solving the environmental problem.