Odvzdušňovací ventil (SGD)

 

Dynamický odvzdušňovací ventil SGD je inovačním řešením, které pomáhá odstraňovat efekt spojený s nedostatečným odvzdušněním dutin – tzv. „diesel efekt“. Ventil SGD je založen na jednoduchém mechanickém principu, kdy je umožněn únik plynu z dutiny a současně dochází k automatickému uzavření odvzdušňovacích kanálků pod tlakem toku plastu. 

Ventil lze umístit na taková místa v dutině, kde při plnění dochází ke vzniku vzduchových kapes. 

Během vstřikování udržuje pružina jezdec v otevřené pozici, takže vzduch může unikat otvorem v horní části ventilu. Ve chvíli, kdy tavenina dosáhne SGD ventilu, se jezdec pod tlakem plastu posune do uzavřené pozice, čímž se současně uzavře odvzdušňovací ventil.  

 

Podrobnější informace včetně geometrie a použití jsou popsány zde

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