Home > News > Content
System Composition Of Hot Runner In Hot Runner Of Plastic Mold
May 25, 2018

1. The forms of hot runner plates are: one type, H type, Y type and X type; There are two types of hot runner plate and inner heating hot runner plate on the structure.

2. Hot Runner Plate: Its main task is to send the melt from the main channel to the individual nozzles at a constant temperature. During the melt transfer process, the pressure drop of the melt is reduced as much as possible, and the material is not allowed to degrade.

3. Nozzles: The hot runner molds have different forms and types depending on the structure of the nozzles, but the process and implementation methods of each manufacturer are very different. This determines the difference in the quality and price of the hot runner system. There are generally open, needle valve and several other special forms.

Needle valve nozzle technology is more advanced, the advantages are:

(1) It can cooperate with the sequential control to reduce the welding marks of the products.

(2) It can prevent the phenomenon of wire pulling and flow phenomenon when opening the mold;

(3) No traces of gates are left on the product, and traces at the gate are smooth;

(4) When the screw of the injection molding machine retreats, it can effectively prevent back suction of material from the cavity.

(5) Larger diameter gates can be used to speed up cavity filling and further reduce injection pressure and reduce product distortion.

4. Heating element hot runner heating element The heating element is an important part of the hot runner system. Its heating accuracy and service life have great influence on the control of the injection molding process and the stability of the hot runner system. General heating rods, heating coils, tube heaters, spiral heaters (heating coils) and so on.

5, thermostat thermostat is the temperature control of the various devices in the hot runner system temperature control, from the bottom to the high end, respectively, through the broken type, integral differential proportional control type and a new type of intelligent temperature controller, according to Users are required to use it with other in-mold components.