Cleaning production line for coating pretreatment

The utility model relates to the technical field of painting, and provides a cleaning production line for coating pretreatment, which comprises a first cleaning mechanism, a second cleaning mechanism and a third cleaning mechanism, the turnover mechanism comprises a support arranged at the discharging port of the first cleaning mechanism, a motor installed on the support, a driving roller installed on the motor and a plurality of turnover plates installed on the driving roller, the driving roller is in transmission connection with the driving end of the motor, and the turnover plates are arranged on the support. The overturning plates are distributed in a circular matrix with the axis of the driving roller as the circle center. A second cleaning mechanism; a collecting assembly; the overturning assembly is arranged between the first cleaning mechanism and the second cleaning mechanism, and the overturning mechanism comprises the support arranged at the discharging port of the first cleaning mechanism, the mot