Hub die-casting mould

Disclosed is a hub die-casting mould, which comprises a lower die (2), a side die and an upper die (4) which are assembled to form a hub casting cavity. The lower die (2) is arranged on a lower template (1). The side die is formed by butt jointing four arc-shaped parts (3) which are slidingly connected to the lower template (1). The four arc-shaped parts (3) are separated into two groups which are respectively located on the left and right sides of the lower die (2). An included angle between 3o - 10o is arranged between sliding traces of two arc-shaped parts (3) of each group and the diameters in left and right directions of the lower die (2). The hub die-casting mould further comprises two connecting blocks (8) respectively arranged at the outsides of the two groups of the arc-shaped parts. Connecting holes (9) are arranged on the connecting blocks (8). The outer walls of the two arc-shaped parts (3) of each group are respectively provided with pulling hooks (7). The pulling hooks (7) are slidingly connected to the connecting holes (9). By pulling two arc-shaped parts of one group by two connecting blocks, only two oil cylinders are required to drive the two connecting blocks, and the oil cylinder energy consumption in the pouring process is reduced by half. The cavity pressure is provided by means of a die locking sleeve. The limitation of the oil cylinder specification is overcome, and the manufacturing cost of the hub is reduced.