High-yield laminated mold

By introducing sealing units, pressure transmission components and locking mechanisms into the mold, the problem of difficult to control the tightness between the boss and the nut is solved, and the effect of material not entering the nut thread and the nut not displaced during the injection molding process is achieved, which improves product quality and production efficiency.

CN119635964AInactive Publication Date: 2025-03-18YUNNAN DIANZHONG HENGDA TECH CO LTD
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Patent Information

Application Number
CN202411950231.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-27
Publication Date
2025-03-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The tightness between the boss and the nut in existing molds is difficult to control, resulting in the problem of the nut moving or the material entering the thread during the injection molding process, which affects the quality and production efficiency of the product.

Method used

A high-yield laminated mold is adopted, including a middle mold seat, an external mold seat, a cavity, a hot runner, a thimble, a boss and a positioning column. Through the sealing unit, a pressure transmission assembly and a locking mechanism, the tightness between the boss and the nut is controlled and material is avoided from entering the thread of the nut.

Benefits of technology

During the injection molding process, the pressurization between the seal ring and the inner wall of the nut ensures that the material does not enter the thread of the nut, and the locking mechanism prevents the nut from displaced, improving the quality and production efficiency of the product, and reducing the force required for demolding.

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Abstract

The invention discloses a high-yield laminated mold, and relates to the technical field of molds, the high-yield laminated mold comprises a middle mold base, external mold bases are slidably connected to the two sides of the middle mold base, mold cavities are formed in the two sides of the middle mold base, and hot runners communicating with the mold cavities are installed in the middle mold base; a cavity is formed in the middle mold base, an ejector pin penetrating through the middle mold base and extending into the cavity is slidably connected into the middle mold base, a boss is fixedly installed in the ejector pin, a positioning column used for being connected with a nut in a sleeved mode is fixedly connected to the boss, and the sealing unit comprises a sleeve and a piston plate which are slidably connected into the positioning column. The larger the internal pressure of the first sealing ring is, the tighter the first sealing ring and the inner wall of the nut is, plastic in a molten state is prevented from entering threads of the nut under the pressure, after a material is cooled and shaped, the roller and the first sealing ring can automatically restore to the original shape, the force needed by demolding ejection of a product is reduced, and the ejector pin can eject the product perfectly and conveniently.
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