Automatic forming device and forming method for shield segment main reinforcement hand hole avoiding bend

The invention discloses an automatic forming device for a shield segment main reinforcement hand hole avoiding bend. The automatic forming device comprises a workbench, a top bending oil cylinder, two push rollers, a limiting roller, a jacking mechanism, two sets of guide rollers and a positioning mechanism. The working table comprises a main working table plate and two side working table plates; the top bending oil cylinder is installed in the center of the top face of the main working table plate, and a cylindrical pushing head is installed at the end of a piston rod. The two push rollers are mounted on the top surface of the main working table plate and are positioned on two sides in front of the pushing head in a one-to-one correspondence manner; the limiting roller is installed in front of the two push rollers and located on the extension line of the axis of a piston rod of the top bending oil cylinder. The jacking mechanism comprises a jacking oil cylinder and two jacking plates; the two sets of guide r