Improvement method of floating pin positioning structure

The invention discloses an improvement method of a floating pin positioning structure. The improvement method of the floating pin positioning structure comprises the following steps: (1) a lower moldbase through hole, communicating up and down, is formed in a lower mold base; (2) a lower mold back plate through hole, communicating up and down and with a smaller aperture size compared with the lower mold base through hole, is formed in a lower mold back plate; (3) a lower template through hole, communicating up and down, is formed in a lower template; and (4) a long floating pin is machined; astop part, matched with the lower mold base through hole, is formed in the lower end of the long floating pin; then, the upper end of the long square floating pin is upwards, and penetrates through the lower mold base through hole, the lower mold back plate through hole and the lower template through hole in sequence from bottom to top, so that the long floating pin is positioned in the lower template through hole through