單缸多點針閥熱澆道裝置之研究

Study of a Single Cylinder with Multi-Valve Gates for Hot Runner Systems

李漢章(Han-Chang Lee)

指導教授 ： 何偉雄

國立臺北科技大學/機電學院/機電整合研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00247

摘要

使用閥澆口熱澆道系統(Valve Gate Hot Runner Systems)時，若塑件上的澆口(Gate)有兩個或以上，容易因澆口間之距離太小，使推動澆口內針閥移動之氣壓缸互相干涉，因而不能達成射出控制。本研究係探討將二個氣壓缸縮減為單一氣壓缸，但該單一氣壓缸會同時推動二支閥針(Valve Pin)，藉而解決兩個氣壓缸互相干涉的困擾。研究結果顯示，單缸同時推動二支以上閥針及單缸多點針閥應用於不同幾何排列之澆口，能有效的提升塑件之品質與產量。單缸多點針閥熱澆道系統，實現了小成品或澆口間距很小，但須要澆口平整或解決流動性極佳的塑料溢澆問題，提供了解決方案。

關鍵字

熱澆道 ； 單缸 ； 多點針閥

並列摘要

A plastic part which has two or more gates was produced using the valve gate hot runner system. When the distance between gates is small, the valve pins in the gates moved by a pneumatic cylinder easily cause the cylinder generating the interference each other. This is difficult to achieve the control of injection molding. This study reduced the number of cylinder from two to one. The use of a single cylinder drove two valve pins simultaneously. This strategy overcomes the interference each other between two cylinders. Experimental results demonstrated that the use of the single cylinder drove two valve pins, or more, to apply in the gates with the different geometry arrangement for plastic injection molding, being able to effectively enhance the quality and production of plastic. The single cylinder with multi-valve gates hot runner system can be applied to producing the plastic with the small distance between gates for injection molding. It also can be employed to produce the plastic with smooth gates and solving the problem caused by excellent flow with leakage for injection molding.

並列關鍵字

Hot Runner ； Single cylinder ； Multi-Valve Gates

參考文獻

19.羅政偉，熱澆道射嘴設計對塑膠流動性影響之研究，碩士論文，國立臺北科技大學製造科技研究所，臺北，2013。

13.L I Xiong：Heat Treatment of Die and Mould Oriented Concurrent Design，JOURNAL OF IRON AND STEEL RESEARCH ， INTERNATIONAL1 2006 ， 13(1) : 40243 ， 74。

18.Peter Unger， ”Hot runner technology，” Hanser Gardner Publication， Inc。

參考文獻

1.現代塑膠，組合式熱流道系統優勢多多，http://info.plas.hc360.com/html/001/010/002/002/84615.htm。