Molds & Tooling
7 visualizaciones
PMMA Product Ejection Whitening and Puncture
Fenómeno del problema
Thin-wall transparent parts are ejection-whitened or even punctured during ejection.
Análisis de la causa
Insufficient cooling gives low ejection strength, or large shrink-fit force makes local ejector pin pressure exceed the limit; ejection whitening on transparent parts cannot be concealed and they are directly scrapped.; During on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based on experience alone.
Solución
①Extend cooling; ②increase ejection area to balance force; ③raise mold temperature to reduce shrink-fit; ④optimize ejector pin layout.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Conclusión clave
The ejection system for transparent parts must be designed to a higher standard; zero tolerance for ejection whitening, and both ejection balance and sufficient cooling are indispensable.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!