Positioning structure of cutting mold of splicing ports of welding plates

The utility model provides a positioning structure of a cutting mold of splicing ports of welding plates. The positioning structure comprises a guide component, a positioning component, an upper die and a lower die, wherein the upper die and the lower die are matched; a positioning groove is formed in the end surface, corresponding to the lower die, of the upper die; the positioning component comprises a steel plate, cutting-off cutter blocks and mounting bases of the cutting-off cutter blocks, wherein the rear end surface of the steel plate is arranged in the positioning groove of the upper die and is connected with the positioning groove in a sliding manner, the mounting bases of the cutting-off cutter blocks are arranged on the front end surface of the steel plate, the cutting-off cutter blocks are respectively arranged on the mounting bases of the cutting-off cutter blocks, guide sleeve holes, which are through holes, are formed in the steel plate, upper-die guide pillars matched with the guide sleeve holes are arranged in the positioning groove of the upper die, and the upper-die guide pillars are arranged in the guide sleeve holes. In the patent, the component which has a guiding effect is manually pushed to approach to the cutting-off cutter blocks, so that errors caused by long guide distance are greatly reduced, and accordingly, the splicing demands of welding plates are satisfied.