PVC Oblique Three-way Injection Mold: Design and Applications The PVC oblique three-way injection mold is a specialized tool used in plastic injection molding to produce PVC fittings with a three-way connection at an oblique angle. These fittings are commonly employed in plumbing, irrigation, and industrial piping systems where directional flow control is required. The mold’s design ensures precision, durability, and efficiency in mass production while maintaining the structural integrity and functionality of the final product. Key Features of the Mold 1. Oblique Angle Design The mold is engineered to create a three-way junction with an angled branch, typically at 45° or 30°, allowing smooth fluid flow and reducing turbulence. This design minimizes pressure loss and enhances the efficiency of the piping system. 2. High-Precision Cavity and Core The mold consists of multiple cavities and cores made from high-grade steel (e.g., P20, H13, or stainless steel) to withstand high injection pressures and temperatures. The precision-machined components ensure dimensional accuracy and consistent part quality. 3. Efficient Cooling System An optimized cooling system with strategically placed water channels ensures uniform cooling, reducing cycle time and preventing warping or sink marks on the molded parts. 4. Robust Ejection Mechanism The mold incorporates ejector pins, sleeves, or plates to smoothly release the molded part without deformation. The ejection system is designed to handle the rigidity of PVC while minimizing wear. 5. Ventilation and Gas Escape Proper venting channels are integrated to allow trapped air and gases to escape during injection, preventing defects like burns or incomplete filling. Material and Processing Considerations PVC is a widely used thermoplastic due to its chemical resistance, durability, and cost-effectiveness. However, its high melt viscosity and thermal sensitivity require precise temperature and pressure control during molding. The mold must be designed to accommodate PVC’s shrinkage rate (typically 1-2%) to ensure dimensional stability. Applications The molded oblique three-way PVC fittings are essential in: - Plumbing systems for redirecting water flow. - Agricultural irrigation for distributing water efficiently. - Industrial pipelines where directional changes are needed. Advantages - High production efficiency with multi-cavity designs. - Long mold lifespan due to wear-resistant materials. - Consistent part quality with tight tolerances. Conclusion The PVC oblique three-way injection mold is a critical tool for manufacturing high-performance pipe fittings. Its advanced design, material selection, and precision engineering ensure reliable production of durable, leak-proof components for various fluid-handling applications.