Glass cutting preprocessor

The utility model provides a glass cutting preprocessor, which belongs to the technical field of glass cutting, and comprises a support frame, a regulating valve, a water inlet pipe, a water outlet pipe, wiping cloth and a connecting rod, a mounting part is arranged on the support frame, the regulating valve is fixedly arranged on the mounting part, one end of the water inlet pipe is connected with a cold water tank, and the other end of the water inlet pipe is connected with an inlet of the regulating valve; one end of the water outlet pipe is connected with an outlet of the adjusting valve, the wiping cloth is located between the installation part and the water outlet pipe, the upper end of the wiping cloth is fixedly installed on the installation part, and the lower end of the wiping cloth makes contact with the glass plate; and a guide wheel is arranged on the connecting rod. According to the glass cutting preprocessor provided by the utility model, the cold water enables the side edge area of the glass p