Saw blade change mechanism for saw blade alloy tool bit welding machine

The utility model discloses a saw blade change mechanism for a saw blade alloy tool bit welding machine. The saw blade change mechanism comprises a swing arm fixing seat, wherein the swing arm fixing seat is provided with two swing arms in a manner of extending to an outer side; an included angle is formed between the swing arms; air cylinders are fixed at the end parts of the swing arms; air cylinder rods of the air cylinders face to side parts of the swing arms; electromagnets used for taking saw blades are arranged on the air cylinder rods; the swing arm fixing seat is rotationally supported on a rotary shaft and connected with a drive motor in a drive manner. The motor is adopted for driving the swing arms to rotate through a reduction gearbox to finish a main action of saw blade change, thereby realizing machine automation, improving the saw blade change efficiency and reducing the labor cost.