Octagonal tube forming machine

The utility model provides an octagonal pipe forming machine which comprises a forming machine body, the forming machine body comprises a cutting machine, a control box and a feeding frame, the cutting machine and the feeding frame are arranged at the two ends of the forming machine body respectively, and the end, close to the cutting machine, of the forming machine body is connected with a forming frame. A mounting side plate is vertically welded to one side of the bottom of the feeding frame, symmetrical limiting sliding grooves are formed in the surface of the feeding frame, first sliding plates are arranged above the limiting sliding grooves respectively, and second sliding plates are arranged below the limiting sliding grooves; the feeding frame is arranged at one end of the forming machine body, an iron sheet at the feeding port can be positioned, the iron sheet moves according to the two guide blocks, the iron sheet is prevented from moving randomly, on one hand, the safety of surrounding workers in a