Summary of Gate Positions for Automotive Molds

Cold Runner System: This system lacks heating devices along the melt channel. It is suitable for short flow paths and rapid injection cycles. Advantages include simple mold component machining and low costs. However, it suffers from significant pressure and heat loss, low production efficiency, and generates substantial runner waste.

Hot Runner System: This system incorporates heating elements along the melt channel, ideal for large parts with long flow paths. Benefits include minimal pressure and heat loss, preventing premature melt solidification, high production efficiency, and reduced waste. Drawbacks include high system costs, technical complexity, and elevated maintenance requirements. Due to their large size, high precision, and long lifespan requirements, automotive injection molds predominantly utilize hot runner systems.