The die changing trolley realizes the automatic die changing operation, the die changing trolley and the machine can meet the automatic mold switching, and the whole line body can achieve the purpose of one-click start and rapid mold changing, saving the time of mold changing and improving the work efficiency. The rapid mold change platform system can effectively solve the mold change operation of 3 to 15 tons of large molds. The mold delivery system has been accepted and adopted by the industry, especially in the manufacturing industry of automobile parts, large toys, home appliances and other large molds.