Rod bending device for orthopedic spinal operation connecting rod and forming method

The invention discloses a bar bending device and a forming method for an orthopedic spinal operation connecting bar, the bar bending device comprises a rigid frame bearing disc, a bending assembly, a plurality of sliding rods and sliding pieces, the sliding rods are parallelly erected in the rigid frame bearing disc, each sliding rod is provided with a set of sliding pieces in a penetrating mode, and the bending assembly is arranged on the rigid frame bearing disc; the sliding pieces in each group have the same length and are positioned on the same side to form an array; the bending assembly comprises a top pressing plate and a driving mechanism. When the connecting rod is bent, the sliding parts are shifted along the sliding rod by changing the distribution of the sliding part array, a gap is formed between the sliding parts on the two sides, and the radian needed by the connecting rod is defined by the edge of the gap; a connecting rod blank is placed in the gap, the top pressing plate is driven by the driv