Feeding structure based on bridge forming machine

The utility model discloses a feeding structure based on a bridge forming machine, an angle adjusting device comprises a bottom plate, the surface of a first telescopic plate is symmetrically and fixedly connected with a first fixing plate, the output end of the first telescopic plate is symmetrically and fixedly connected with a second fixing plate, and the top of the first telescopic plate is symmetrically and rotatably sleeved with a rotating mounting plate; the top of the protective shell is symmetrically and rotationally sleeved with lead screws, inner cavities of the protective shell are symmetrically and rotationally sleeved with rotating rods, the surfaces of the rotating rods are symmetrically and fixedly sleeved with second bevel gears, the surfaces of the lead screws are symmetrically and fixedly sleeved with first bevel gears, and one ends of the rotating rods are symmetrically and fixedly sleeved with gears. The utility model relates to the technical field of forming machines. According to the fe