Injection mold facilitating demolding of cup cover

By introducing a slider assembly of inclined molding blocks and elastic elements into the injection mold, the problem of difficult demolding of traditional molds is solved, achieving stable and smooth demolding of cup lids and efficient production, thereby improving product quality and mold life.

CN224391772UActive Publication Date: 2026-06-23NINGBO YIJIE PRECISION MOLDING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO YIJIE PRECISION MOLDING CO LTD
Filing Date
2025-07-28
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Traditional injection molds are difficult to demold when molding cup lids with folding structures, leading to product jamming, deformation, and breakage, which affects product qualification rate and mold life.

Method used

Design an injection mold that facilitates the demolding of a cup lid. The mold employs a slider assembly with an inclined molding block and an elastic element. The slider assembly expands the space of the connecting part during the mold opening process. Combined with the cooperation of the annular locking block and the locking groove, it ensures that the connecting part and the main body are demolded synchronously. The elastic element provides restoring force and stability.

Benefits of technology

It improves demolding efficiency, ensures product molding quality, extends mold life, enhances demolding stability and product consistency, and reduces mold failure rate.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224391772U_ABST
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Abstract

The utility model belongs to injection mold field provides a kind of injection mold convenient for cup cover demolding, it includes: fixed mould seat, is equipped with fixed mould cavity block;Movable mould seat, it is movably arranged below fixed mould seat, movable mould cavity block is set on movable mould seat, and after movable mould seat and fixed mould seat are pasted, first product cavity for forming main body part is formed between movable mould cavity block and fixed mould cavity block;Sliding assembly, movably arranged in movable mould seat, and the inclined setting of sliding assembly is provided with forming block.Compared with prior art, the utility model has the advantages that by setting the sliding assembly with inclined forming block in movable mould seat, the second product cavity of forming connecting part can expand space along the inclined direction during mold opening, so that the connecting part and the main body part are demolded synchronously, the demolding efficiency is improved, and the molding quality of the product is not affected.
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