hot runner nozzle heater

Hot Runner Systems is a heating assembly system used in injection molds to inject molten plastic particles into the cavity of a mold. The hot runner mold is a new structure in which the runner and the runner of the conventional mold or the three-plate mold are heated, and the flow passage and the runner are not required to be taken out at each forming. Many conditions are factors to consider when selecting a hot nozzle, such as different plastic properties, shape, size, thickness, weight, cavity arrangement and gate location. There are several different shapes and sizes of hot nozzles on the market. The runner plate is adapted to various products.

advantage:

1. Save raw materials and reduce costs.

2, shorten the molding cycle and improve machine efficiency

3. Improve the surface quality and mechanical properties of the product.

4. It is not necessary to use a three-plate mold to use a point gate.

5. It is economical to form a single product with a side gate.

6. Improve the degree of automation.

7. The gate can be controlled by a needle valve gate.

8. The quality of the injection molded parts of the multi-cavity mold is the same.

9. Improve the surface appearance of injection molded products.

10, can use a small injection pressure, can effectively reduce the post-modification of thin-walled products.

Disadvantages:

1. The mold structure is complex, the cost is high, and the maintenance cost is high.

2. It takes a while for the boot to be stable, resulting in more waste.

3. When there is melt leakage and heating element failure, it has a great influence on product quality and production schedule.

The third disadvantage mentioned above can be reduced by purchasing quality heating elements, hot runner plates and nozzles and carefully maintained during use.