To provide a casting device capable of manufacturing a thin lattice free of wire breakage, without deteriorating productivity.

The casting device for the lead lattice for a lead battery comprises a mold 5 for forming the lattice, and a tapping device 1 for tapping a molten metal of a lead alloy 12 into the mold 5, wherein the tapping device 1 comprises a rotating part 2 and a stationary part 3, the rotating part 2, whose inner space 4 is stored with a fixed amount of the molten metal 12, comprises a movable gate 6 for tapping the molten metal 12 by rotating right and left by a fixed angle making a horizontal shaft 2b as a center, and a movable feeding port 7 for supplying a predetermined amount of the molten metal 12 to the inner space 4 when the molten metal 12 is reduced to the predetermined amount, and the stationary part 3 houses the rotating part 2 in the inner space, and has a stationary gate 8 communicating with the movable gate 6 in response to the turning of the rotating part 2, and a feeding pipe 9 for supplying the molten metal 12 to the inner space 4.