Plastic cup making machine with mold convenient to replace

The invention provides a plastic cup making machine with a mold convenient to replace. The plastic cup making machine comprises a cup making machine body, the mold installed in the cup making machine body and a mold replacing device. The mold replacing device comprises an electric hoist arranged above the mold, two rails arranged below the mold and a mold placing frame, a rail mounting groove is formed in the bottom of the mold, the rails are inserted into the rail mounting groove, and chain holes are formed in the two ends of each rail, so that a chain penetrates through the chain holes and is hung on the electric hoist; the electric hoist is connected with the first motor, the rail is connected with the second motor, and the first motor and the second motor are connected with the controller. And when the mold is moved, the electric hoist and the track synchronously move. When the mold is replaced, the electric hoist and the track are used for synchronously moving the mold, the purpose of saving manpower and