Hot-pressing sintering die for diamond tool bit

The utility model provides a hot-pressing sintering die for a diamond tool bit. The utility model belongs to the technical field of diamond tool bit machining. The device comprises a base body, a first pressure head and a second pressure head, the base body is provided with a containing cavity which is through up and down. The accommodating cavity is used for accommodating the first pressure headand the second pressure head; the first pressure head and the second pressure head are sheet-shaped; the multiple first pressing heads are divided into two layers in the height direction. The ends ofthe adjacent first pressing heads are in lap joint and are arranged at intervals in the thickness direction of the first pressing heads, the second pressing heads are arranged between the two adjacentfirst pressing heads on the same layer, and the second pressing heads, the two adjacent first pressing heads in the thickness direction and the first pressing heads opposite in the height direction jointly define a forming cav