Disposable cup cover injection mold with pipe orifice plugging structure
By integrating the mold cavity design and the air pressure support structure, the problem of tearing or breaking of the extension strip during injection molding was solved, achieving efficient and stable cup lid production.
CN224255950UActive Publication Date: 2026-05-19DONGGUAN MINGCAN PLASTIC PROD CO LTD
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Patent Information
- Application Number
- CN202521278756.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-21
- Publication Date
- 2026-05-19
- Estimated Expiration
- 2035-06-21
AI Technical Summary
Technical Problem
The extension strips of existing disposable cup lids are prone to tearing or breaking during injection molding, resulting in low production efficiency and increased costs.
Method used
It adopts an integrated design of cup lid cavity, transition cavity and sealing cavity, and uses air pressure to support the extension strip during mold opening through air passage structure and cavity design to avoid tearing or breakage. Combined with hot runner system, it can achieve rapid molding.
Benefits of technology
It improves product precision and quality stability, reduces production costs, shortens the molding cycle, and increases production efficiency, enabling the simultaneous injection molding of multiple cup lids.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field of injection molds, in particular to a disposable cup cover injection mold with a pipe orifice plugging structure, which comprises an upper mold main body and a lower mold main body which are butted and matched with each other, and at least one mold core assembly is arranged between the upper mold main body and the lower mold main body. The mold core assembly comprises an upper mold core installed at the lower end of the upper mold body, at least one lower mold core installed on the lower mold body and corresponding to the upper mold core, and an annular ejector plate arranged around the lower mold core in a sleeving mode, and a plurality of evenly-distributed ejector rods are connected to the lower end of the annular ejector plate. When the mold is opened, the extension strip with a thin structure is supported through air pressure, the extension strip is prevented from being pulled and broken, long-time cooling and curing are not needed, the molding period is greatly shortened, the production efficiency is improved, and the mold can be arranged to be of a structure with a plurality of mold cavities, so that the purpose of simultaneous injection molding of a plurality of cup covers is achieved, and the production efficiency is further improved.
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