Locking device for rubber sleeve forming die

By setting a locking device with a spring retainer and a rotating locking hook on the rubber short tube molding die, the problem of middle die displacement is solved, ensuring product quality and dimensional accuracy, and reducing rubber overflow and scrap rate.

CN122401716APending Publication Date: 2026-07-17TIELING WUXING OIL FILM & RUBBER SEALING RES INST
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Patent Information

Application Number
CN202610604920.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-06
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing rubber short tube molding dies, the middle mold tends to shift upward relative to the lower mold during mold closing, resulting in gaps, causing rubber overflow and product dimensional deviations, which affect product quality.

Method used

A locking device is adopted, including spring retainers on both sides of the upper mold and rotating locking hooks on both sides of the middle mold. By pressing down the handle with the spring retainers, the rotating locking hooks lock the lower mold support groove, preventing the middle mold from shifting, and the positioning pins ensure accurate installation.

Benefits of technology

It effectively prevents the displacement of the middle mold, avoids the overflow of the adhesive, ensures the dimensional accuracy and appearance quality of the product, and reduces the scrap rate.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明公开了一种用于橡胶短管成型模具的锁紧装置,所述的橡胶短管成型模具包括相配合的上、中、下模,所述的上模装有柱状模芯、中模内开设有相配合的模腔,所述的锁紧装置包括装在所述上模相对两侧的弹簧固定器和中模相对两侧的旋转锁钩,旋转锁钩具有顶部的按压手柄和底部的托钩,所述的弹簧固定器上装有下压弹簧,所述下模相对两侧的底部形成有托槽,当中模置于下模上、上模扣合在中模上时,上模相对两侧弹簧固定器上的下压弹簧可分别下压中模相对两侧旋转锁钩顶部的按压手柄、使得两侧旋转锁钩转动至托钩伸入到相应下模底部钩住锁紧相对应的托槽。应用本发明制备橡胶短管时,中模与下模之间不会产生间隙。
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