Limiting device of pipe bending machine die mandrel

The utility model discloses a limiting device of a pipe bender die mandrel, which comprises a base plate and a mounting seat, an anti-deviation mechanism is arranged at the bottom of the mounting seat and comprises a support block, a first thorn pin and a second thorn pin are respectively arranged at the bottoms of two sides of the support block, and the first thorn pin and the second thorn pin are arranged on the base plate. And the first thorn pin and the second thorn pin are connected with the supporting block through spring shafts, and a limiting plate is arranged at the bottom of the front side of the supporting block in a sliding mode. According to the limiting device, the first thorn pin and the second thorn pin are limited through the limiting plate, and the first thorn pin and the second thorn pin can be prevented from moving in cooperation with the first thorn strip and the second thorn strip, so that the supporting block and the mounting base are prevented from moving backwards, and it is guarantee