Abstract: A large-sized and precision injection mold was designed on the basis of the structural feature and aspect of automobile headlight lenses. The design ideas and experiences were summerized in terms of the inclined side core-pulling mechanism, the fixed distance parting mechanism, the “vertical water pipe+gradient water pipe+buffle-type water way” cooling mode, and the “elector pad+ejector pin” stripping system.

Key words: injection mold, large and thin-walled injection mold, automobile headlight lense, inclined side core-pulling mechanism, fixed distance parting mechanism, injection mold, square guide column