Plastic bottle cap injection molding mold

Through innovative mold structure design, rapid demolding of injection molding molds and efficient production of multiple bottle cap varieties have been achieved, solving the problems of existing molds being unable to demold quickly and switch cap surface graphics.

CN120816671APending Publication Date: 2025-10-21QINGDAO LONGSHENG ORIGIN GLASS CO LTD
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Patent Information

Application Number
CN202511201920.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-26
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

Existing injection molding molds cannot achieve rapid demoulding and automatic bottle cap ejection, and cannot switch the concave patterns on the bottle cap surface according to the product type.

Method used

A mold structure including a first mold core, a second mold core, a wedge block, and an expansion and contraction assembly is designed. The synchronous contraction and expansion of the mold core are achieved by a motor-driven rubber roller and a timing belt. Combined with a connecting assembly and a cap adjustment assembly, it enables rapid demolding and flexible replacement of the bottle cap forming surface.

Benefits of technology

It enables rapid demolding and efficient production of multiple bottle cap varieties, improving production efficiency and flexibility, and meeting the high-efficiency production needs of multiple bottle cap varieties.

✦ Generated by Eureka AI based on patent content.

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    Figure CN120816671A_ABST
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Abstract

The invention discloses a plastic bottle cap injection molding mold and relates to the technical field of plastic bottle cap production, the plastic bottle cap injection molding mold comprises a first mold plate and a first electric push rod, a second mold plate, a third mold plate and a fourth mold plate are sequentially arranged above the first mold plate, a support is installed below the first electric push rod, and the bottom of the support is connected with the fourth mold plate; the first template, the second template, the third template and the fourth template are respectively provided with a communicating assembly and a cover surface adjusting assembly, the fourth template is provided with a first mold core and a second mold core in a sliding manner, an expansion and contraction assembly is arranged between the first mold core and the second mold core, the second mold core is fixedly connected with a wedge block, and the wedge block is fixedly connected with the second mold core. A traction steel rope is installed between the second mold core and the expansion and contraction assembly, and a fixing frame is installed on the fourth mold plate. The injection molding mold solves the problems that an existing injection molding mold cannot achieve rapid demolding through an expansion and contraction structure and cannot switch concave images and texts on the cap surface of a bottle cap according to the types of products.
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Citation Information

Patent Citations

  • Automatic Cover-Closing Mechanism of the Cap Injection Mold

    CN104118091B

  • An automatic unscrew injection mold for bottle caps

    CN116512534B