In the medical and pharmaceutical industries, precision and reliability are critical—especially when it comes to devices like three-way stopcock syringes. These syringes allow for controlled fluid management in procedures such as injections, IV administration, and contrast media delivery. To ensure high performance, the mold used to manufacture these syringes must meet strict design and engineering standards.

　　Here are the key design features of a high-quality three-way stopcock syringe mold:

　　1. Precision Core and Cavity Design

　　The mold must have ultra-precise core and cavity components to form the syringe’s intricate internal pathways. Since three-way stopcocks require smooth fluid transitions between ports, the mold must eliminate any imperfections that could cause leaks or blockages.

　　2. High-Grade Material Selection

　　Durability is essential for consistent production. The mold is typically made from hardened steel or corrosion-resistant alloys to withstand high-pressure injection molding cycles and maintain dimensional accuracy over thousands of shots.

　　3. Multi-Slide Mechanisms for Complex Geometry

　　A three-way stopcock has rotating valves and multiple fluid channels. The mold must incorporate advanced multi-slide mechanisms or collapsible cores to form these undercuts and internal threads without post-molding machining.

　　4. Tight Tolerances for Leak-Proof Seals

　　Medical syringes demand micron-level tolerances to ensure airtight seals between the stopcock and syringe barrel. The mold must be CNC-machined with extreme precision to avoid flash or misalignment that could compromise functionality.

　　5. Efficient Cooling System

　　To maintain cycle times and prevent warping, the mold requires an optimized cooling channel layout. Uniform cooling ensures consistent part quality and reduces defects like sink marks or internal stresses.

　　6. Easy Ejection and Minimal Part Handling

　　The mold should include ejector pins or air-assisted ejection to release delicate syringe components without damage. Automated demolding features help streamline production and reduce manual intervention.

　　7. Compliance with Medical Standards

　　Since these syringes are used in critical medical applications, the mold must produce parts that meet ISO 13485, USP Class VI, and FDA requirements for biocompatibility and sterility.

　　Conclusion

　　Designing a high-performance three-way stopcock syringe mold requires expertise in precision engineering, material science, and medical device regulations. By incorporating these key features, manufacturers can ensure reliable, leak-proof syringes that meet the highest industry standards.

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