Obturation Cap with Frangible Connection for Single Injection Molding

The mold is divided into multiple movable components including a first core that moves relative to a second core, allowing different sections of the cap (skirt, sleeve, plug) to be formed with precise angular orientations and sealing features in a single injection cycle. This segmentation enables complex geometries without requiring post-manufacturing welding or assembly operations.

The mold employs dynamic movable cores that shift positions during the injection and ejection cycles. The first core moves to facilitate ejection of the skirt while the second core remains stationary to maintain the sleeve and plug structure. This dynamic behavior allows the mold to adapt its configuration for forming different parts with precise angular orientations and sealing tongues.

The frangible connection, sealing tongues, and beveled edges are integrated into a single monolithic structure formed by injection molding. The plug, sleeve, and skirt are created as one piece with the frangible connection inherently formed by the mold geometry. This merging eliminates the need for separate sealing components or post-assembly operations, achieving reliable sealing without proportionally increasing device complexity.

The mold geometry is designed with specific angular parameters (beveled edges at defined angles, inclined sealing surfaces) that are directly transferred to the cap structure during injection molding. By controlling mold surface angles and configurations, the invention achieves precise angular orientations and sealing features through parameter specification rather than complex mechanical structures.

The mold is pre-configured with movable cores positioned to facilitate both injection and ejection operations. The cores are designed with predetermined motion paths that enable them to move to optimal positions for forming different sections of the cap and then automatically eject the finished product. This preliminary arrangement of movable components allows single-piece manufacturing without requiring complex real-time adjustments during production.

The movable cores are designed to automatically perform both the forming and ejection functions through their inherent motion capabilities. After injection, the cores move back to their initial positions, and the ejection system automatically releases the finished cap without requiring external intervention or complex multi-step ejection mechanisms. The mold structure serves itself by using the same movable components for both formation and release operations.