Closed polygonal reinforcement cage integrated bending machine and reinforcement cage bending process

The invention provides a closed polygonal reinforcement cage integrated bending machine and a reinforcement cage bending process. The invention discloses a closed polygonal reinforcement cage integrated bending machine and a reinforcement cage bending process. The closed polygonal reinforcement cage integrated bending machine comprises: a supporting mechanism; a lifting mechanism; an adjusting mechanism; a measuring mechanism; a fastener; a bending mechanism which comprises a second hydraulic rod, a rotating rod, a bending girder, a contact beam and a fixing shaft, wherein the two ends of the second hydraulic rod are rotationally connected with the bending girder and the lifting mechanism; the limiting mechanism comprises a sliding plate, a limiting plate, a first spring, a supporting plate, a limiting block and a clamping groove, the interior of the supporting plate is slidably connected with the limiting plate with the arc-shaped side wall, and the limiting plate abuts against the side wall of the fastener;