injectiones

The main nozzle of the manifold is leaking; the sealing surface is not in place, causing leakage; the template is deformed, causing leakage; the manifold is deformed, resulting in unstable temperature of the leaking.Analysis of common problems in hot runners on plastic molds.Analysis of the cause of leakage: the manifold plate is higher than the manifold plate; several hot nozzles are not in the same plane; the center gasket, the center positioning pin, and the stop pin height are wrong; the hot runner manifold is blocked. Analysis: The quality of the thermostat is too poor;

The connection is loose; the hot runner and the mold are in too much contact, the heat loss is serious; the thermocouple is crushed by the actual temperature and the temperature displayed by the thermostat has an error: the thermocouple and the hot runner have different thermocouple index numbers, ie “J” “K” does not match; the thermostat is adjusted to Fahrenheit; the two sets of thermocouples are cross-interchangeed, resulting in temperature measurement failure; the thermocouple wire is crushed; the thermostat has other faulty valve needle movements.

Reason analysis: insufficient air pressure, poor airway and poor sealing; cylinder system is bitten: cylinder, manifold and nozzle are not concentric, code template heat is too much; needle and guide of needle valve hot nozzle Set precision mold manufacturing of cards dead: different hearts or overheating There is a leakage between the valve needle and the guide sleeve, the cold material encloses the valve needle; the sealant is not in place, if the other is normal, consider the valve needle return groove; check whether the injection signal connection is correct; the gate is opposite the gate wall Thick is too big