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.
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
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.
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.
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.
Smart Images

Figure CN122401716A_ABST