Semi-automatic bending machine capable of adjusting bending angle

The semi-automatic bending machine capable of adjusting the bending angle comprises a base, a rotary disc is movably connected to the base, the rotary disc is in transmission connection with a stepping motor, a cylindrical die is arranged at the upper end of the rotary disc, a connecting plate is fixedly connected to the side face of the rotary disc, and a limiting sleeve is connected to the connecting plate through a first air cylinder assembly. According to the semi-automatic bending machine capable of adjusting the bending angle, the stepping motor is used for driving the rotating disc to rotate by a certain angle, bending of a heat exchange tube is achieved through mutual cooperation of the fixing block and the cylindrical mold, the structure is simple, operation is easy and convenient, the rotating angle of the rotating disc is adjusted by setting the rotating angle of the stepping motor, and the bending angle is adjusted. And therefore, the bending angle is adjusted, and the application range of the dev