Simple tube bending machine

A simple tube bending machine is provided, wherein horizontal slide rails are arranged on a workbench surface on the top portion of a stand frame, a trolley combination is supported on the slide rails through a first slide block, a dividing head is installed on the trolley combination, a base plate is fixed on one end of the workbench surface, a support and a framework are installed on the base plate, riding wheels are installed in the framework, a bracket is arranged beside the framework, and is supported on a first upright post through bearings, and a bending die, a fixed clamping die, a movable clamping die and a pressing block are arranged in the bracket, wherein the bending die is sleeved on the first upright post, the fixed clamping die is arranged between the bending die and the movable clamping die, and is fixed with the bending die, corresponding semicircular through-grooves are arranged on the opposite surfaces of the fixed clamping die and the movable clamping die, the movable clamping die and the