Coating device for processing composite plastic woven bag

The utility model relates to a coating device for processing a composite plastic woven bag. The coating device comprises a base, an electric air cylinder is arranged on the base, a supporting seat is fixedly installed on the electric air cylinder, a coating tank is installed on the supporting seat, a feeding port is formed in the coating tank, a liquid pump is installed on the coating tank, the liquid pump is connected with a liquid inlet pipe and a liquid outlet pipe, and a spray head is installed on the liquid outlet pipe. The supporting seat is provided with a second electric telescopic rod, the second electric telescopic rod is provided with a first electric telescopic rod, and the first electric telescopic rod is provided with a dredging rod matched with the spray head; the base is provided with a first rotating shaft, a driven bevel gear and a first motor, the power output end of the first motor is provided with a driving bevel gear meshed with the driven bevel gear, the first rotating shaft is provided