Hot runner systems generally include two types: open hot runners and needle valve hot runners.
The open hot runner is generally composed of several parts, such as injection nozzle, manifold plate, hot nozzle, temperature control box and accessories.
The needle valve hot runner is generally composed of injection nozzle, manifold plate, hot nozzle, temperature control box, cylinder or oil cylinder, valve needle, and accessories.
The mouth form of the hot runner is divided into a large spout and a pointed mouth.
Manifolds are used for multi-cavity or multi-point feeding and single-point eccentric feeding. The size of the manifold is mainly determined by the distribution of the cavity on the mold, the nozzle arrangement and the gate position.
The temperature control box includes the main unit, cables, connectors and wiring male and female sockets. Hot runner accessories typically include: heaters and thermocouples, runner seals, connectors, junction boxes, etc. The main thing is to control the temperature of the manifold and hot mouth.
