Lateral ribbing device of water tank

The utility model belongs to the field of water tanks, and particularly relates to a side ribbing device of a water tank, the water tank comprises a tank body and a flange arranged on the periphery of the tank body, the side ribbing device comprises a profiling female die, a forming male die and an upper cylinder base, the profiling female die is arranged on the upper cylinder base, a profiling concave position is arranged on one side of the profiling female die far away from the upper cylinder base, and the forming male die is arranged on the profiling concave position. The upper cylinder base drives the profiling female die to be close to or far away from the forming male die, when the profiling female die drives the water tank and the forming male die to be closed, the upper cylinder base drives the forming male die to be close to or far away from the forming male die, and when the upper cylinder base drives the water tank and the forming male die to be closed, the forming male die is driven to be close to