Main frame bar loading device of automatic assembler

The utility model relates to a main frame bar loading device of an automatic assembler. The problem that the loading of the existing main frame bar is inconvenient is solved. The device comprises a frame body, a rod-shaped material transporting mechanism, an upper transporting mechanism and a lower transporting mechanism, wherein the upper transporting mechanism and the lower transporting mechanism are parallel and are arranged on one side of the rod-shaped material transporting mechanism, the inlet of the lower transporting mechanism extends to the outer side of the inlet of the upper transporting mechanism, the discharging mouth of the upper transporting mechanism penetrates above the rod-shaped material transporting mechanism, a lifting transporting mechanism is connected onto the discharging mouth of the upper transporting mechanism, the discharging mouth of the lower transporting mechanism extends to the other side of the rod-shaped material transporting mechanism, and two loading distance controlling mechanisms are respectively arranged on the upper transporting mechanism and the lower transporting mechanism. The device has the advantages of being high in automatic degree, capable of realizing the automatic loading and transporting of the rod-shaped materials, capable of realizing the loading of a side frame bar and the automatic assembling of the side frame bar and the rod-shaped materials, high in efficiency and small in occupied area.