Special-shaped steel pipe forming equipment

The special-shaped steel pipe forming equipment comprises a rack and a core rod, and a chuck used for clamping a straight pipe is arranged on the rack; a lifting unit is arranged on the rack, and a high-frequency pipe capable of heating a straight pipe is arranged on one side of the rack; the lifting unit comprises a lifting screw rod, a driving nut and a servo motor, the servo motor is in transmission connection with the driving nut, and the driving nut can drive the lifting screw rod to do vertical lifting motion after rotating; the servo motor is connected with the PLC, and the PLC controls the servo motor to gradually increase the number of turns of rotation of the driving nut along with the increase of the number of driving times, so that the straight pipe on the driving chuck is completely matched with the core rod after reciprocating for multiple times, and the conical pipe is formed. According to the forming device, the rising height of a straight pipe can be gradually increased, so that the straight