What types of hot runner nozzles are used in injection molds?
Hot runner nozzles are critical components in hot runner systems, directly influencing melt flow, filling efficiency, and product quality.
1. Open Nozzle
1. Features: No valve pin; melt flows directly into the mold cavity.
2. Applications: Suitable for low-viscosity plastics and high-volume production.
3. Advantages: Simple structure, lower cost, and easy maintenance.
2. Valve Gate Nozzle
1. Features: A pneumatically or hydraulically actuated valve pin controls melt flow and seals the nozzle precisely.
2. Applications: Ideal for high-precision, high-quality products.
3. Single Tip Nozzle
1. Features: Designed for single gate points with a compact structure, suitable for small products.
2. Applications: Single-cavity molds or small multi-cavity molds.
4. Multi-Tip Nozzle
1. Features: Equipped with multiple gate points for simultaneous injection into multiple cavities.
2. Applications: Multi-cavity molds and large-area components, such as pallets, automotive dashboards, etc.
