Clamping tool for gear mold

The utility model discloses a clamping tool for a gear mould, which relates to the field of gear moulds and comprises a supporting bottom plate, fixing side blocks are symmetrically welded on two sides of the supporting bottom plate, fixing through holes are arranged on the top surfaces of the fixing side blocks, a top horizontal groove is horizontally arranged on the top surface of the supporting bottom plate, and the top horizontal groove is arranged on the top surface of the supporting bottom plate. Side fixing boxes are symmetrically connected to the two side edges of the supporting bottom plate through bolts, a fixing bottom plate is vertically and upwards in butt joint with the top face of the supporting bottom plate, an extending inserting rod is inserted into the top end of the fixing bottom plate, an adjusting top block is clamped to the top face of the extending inserting rod, and an extrusion top plate is horizontally welded to one side edge of the extending inserting rod. An anti-skid plate is hor