Pipeline rounding machine

The utility model relates to a pipeline rounding machine which comprises a pushing device, a rounding device and a fixing plate. The pushing device and the rounding device are fixed on the fixing plate; an output shaft is arranged on the pushing device; a transition block is arranged on the pushing device; the transition block is triangular; a fixing groove is formed in the front end of the transition block; a transmission shaft is arranged in the fixing groove; a pull rod is arranged at the front end of the transmission shaft; a left semicircular rounding block and a right semicircular rounding block are arranged in the rounding device; and the front end of the pull rod is fixedly connected with the left semicircular rounding block. According to the pipeline rounding device, the pushing device and the rounding device are arranged, a pipeline is simply and effectively rounded, the pushing device repeatedly pushes the left semi-circular rounding block back and forth to move inwards andoutwards, it is guarantee