A high air-tight eye shadow pencil mold

By adopting a sealing structure in the eyeshadow pencil mold that corresponds one-to-one with the core and a slanted guide pin design, the high airtightness and high precision molding of the mold are achieved, solving the leakage and wear problems of existing molds and improving production efficiency and mold life.

CN224689540UActive Publication Date: 2026-08-28DALI NEW TECH (JIANGSU) CO LTD
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Patent Information

Application Number
CN202521998311.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-17
Publication Date
2026-08-28
Estimated Expiration
2035-09-17

AI Technical Summary

Technical Problem

Existing eyeshadow pencil molds have deficiencies in terms of airtight sealing and closure precision, which leads to easy leakage of molten plastic and gas leakage, affecting product quality and production efficiency. In addition, the molds are prone to wear and have a short service life.

Method used

The sealing structure, which corresponds one-to-one with the core, combined with the automatic guiding design of the inclined guide pin and the slide, achieves double sealing and synchronous closure of the sealing plate and the mold cavity. The core is driven to insert into the mold cavity by the hydraulic push rod to ensure that the mold cavity is completely sealed.

Benefits of technology

It significantly improves the airtightness and molding quality of the mold, reduces molten material overflow and gas leakage, enhances operational reliability and production efficiency, and extends the service life of the mold.

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Abstract

The utility model discloses a kind of high air-tight eye shadow pen mould, including fixed mould seat, press mould, mould module, core-pulling driver and self-sealing element. The mould module surface is provided with mould cavity, the output end of the core-pulling driver is connected with slide, and the surface of slide is fixed with several cores, and the core is inserted into mould cavity to form the hollow structure of product;The self-sealing element includes guide slide, slide base, push block, sealing plate, seal and inclined guide pin, and the slide base vertically slides along guide slide under the guidance of inclined guide pin, drives sealing plate to close to the surface of mould module, the surface of sealing plate is equipped with the seal corresponding to core one by one, seal extends into mould cavity and is connected with the end of core, and end and the taper hole groove of mould cavity end portion are closely matched. When closing mould, the surface of sealing plate and slide and the end surface of mould module are sealed and abutted, form double sealing structure, to avoid molten material overflow and gas leakage. The mould has the advantages of high air-tight performance, reliable closing precision and high degree of automation.
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