U-PVC Tee Pipe Fitting Mould: Design, Functionality, and Applications A U-PVC tee pipe fitting mould is a precision-engineered tool used in the injection moulding process to manufacture tee-shaped pipe fittings from unplasticized polyvinyl chloride (U-PVC). These fittings are essential components in plumbing, irrigation, and industrial piping systems, enabling the diversion or combination of fluid flow at 90-degree angles. The mould’s design and construction play a critical role in ensuring the dimensional accuracy, durability, and performance of the final product. Design and Construction The mould is typically made from high-grade tool steel or aluminum alloy to withstand high pressure and temperature during injection moulding. It consists of two primary halves—the core and cavity—which form the external and internal contours of the tee fitting. Key features include: 1. Runner and Gate System – Ensures uniform flow of molten U-PVC into the mould cavity, minimizing defects like air traps or uneven filling. 2. Cooling Channels – Strategically placed to facilitate rapid and even cooling, reducing cycle time and warping. 3. Ejection Mechanism – Uses pins or plates to release the solidified fitting without damage. 4. Venting – Small vents prevent gas buildup, ensuring smooth material flow and defect-free surfaces. Functionality and Precision The mould must produce fittings with tight tolerances to ensure leak-proof connections in piping systems. Critical dimensions include the inner and outer diameters, socket depth, and wall thickness. Advanced CNC machining and EDM (electrical discharge machining) are employed to achieve high precision. Additionally, the mould may incorporate interchangeable inserts to produce tees of varying sizes (e.g., 20mm to 110mm) or configurations (equal or reducing tees). Applications and Advantages U-PVC tee fittings are widely used in: - Plumbing systems for residential and commercial water supply. - Drainage and sewage systems due to U-PVC’s corrosion resistance. - Agricultural irrigation where lightweight, durable piping is required. The mould’s efficiency directly impacts production costs and product quality. A well-designed mould ensures: - High repeatability for mass production. - Low scrap rates due to precise manufacturing. - Long service life with minimal maintenance. Conclusion The U-PVC tee pipe fitting mould is a vital tool in the production of reliable, high-performance pipe fittings. Its design prioritizes precision, durability, and efficiency to meet industry standards. By leveraging advanced manufacturing techniques, these moulds enable the cost-effective production of fittings that are essential for modern piping infrastructure.