Hot pressing die

The invention discloses a hot pressing die, comprising an upper die body and a lower die body. The upper die body is connected with an air cylinder; a heating cavity and a heating plate are arranged in the upper die body; a heating head is arranged on the heating plate; an air blower is arranged on the side wall of the upper die body; an air inlet of the air blower is communicated with the heating cavity; a cooler is arranged on one side of the air blower; an air outlet of the cooler is communicated with an air outlet of the air blower through a first pipeline; the first pipeline is communicated with an air guide pipe; the side wall of the air guide pipe located in the upper die body is communicated with a spray head; an air guide plate is arranged below the air guide pipe; a plurality of through holes are formed in the air guide plate; and a hot pressing head is arranged at the lower end of the upper die body. The pressing pressure is controlled to be 190 Mpa, the temperature of the hot pressing head of the