Injection Molding
3 visualizaciones
PC Injection Nozzle Blockage
Fenómeno del problema
After startup or a short shutdown, the nozzle does not discharge material or discharges poorly.
Análisis de la causa
PC melt cools and solidifies at the nozzle; the nozzle temperature is set low or the heater band is faulty; not purged after shutdown; PC becomes viscous as soon as it cools, and the nozzle is the weak point; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Solución
①Check the nozzle heater band and thermocouple; ②Appropriately increase the nozzle temperature; ③Purge before shutdown or keep warm by raising temperature; ④Clean the cold material in the nozzle; ⑤Enlarge the nozzle orifice when necessary.
Conclusión clave
For PC nozzle blockage, 'first check the heating system': nozzle temperature is the lifeline; PC becomes viscous as soon as it cools, and the state of the heater band and thermocouple must be regularly inspected; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!