To correctly discharge and fit a metallic mold even if there is variation in a stop position of the metallic mold at the time of exchanging the metallic mold by controlling the stop position of a metallic mold exchanging carriage based on the position information.

The metallic mold is shifted to an a exchanging position and stopped by uperating a cylinder 30 for shifting the metallic mold in a molding machine in order to exchange the metallic mold. A dog 32 integrated with the metallic mold, too is shifted to a position faced to a position detecting sensor 33 and stopped. In this state, the distance from the tip part of the position detecting sensor 33 to the outer peripheral point of the dog is measured with the position detecting sensor 33. The metallic mold exchanging carriage 7 and a transferring device 8 can accurately be stopped at the metallic mold exchanging position by inputting the measured metallic mold stop position data to a feedback control device for controlling a servo motor for driving the metallic mold exchanging carriage and the transferring device.