射出成型設備及射出成型方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

108101614

專利證號

I 728300

專利獲證名稱

射出成型設備及射出成型方法

專利所屬機關 (申請機關)

中原大學

獲證日期

2021/05/21

技術說明

(1)中文 陶瓷粉末射出成型因為其原料本身不具流動性，因此必須使用添加劑來賦予流動性，因此導致成型時會因為添加劑與陶瓷粉末相互分佈不均勻，造成產品密度分佈不均，機械強度受到影響。再者流動性也是陶瓷粉末製程瓶頸之一，流動性不佳會導致產品容易發生翹曲等缺陷。因此本技術將導入超臨界流體與氣體反壓技術，將惰性氣體改變至超臨界態後注入料管中，使兩者混鍊均勻，利用超臨界流體之特性增加原料流動性，解決成型易發生翹曲之問題。同時間，再搭配氣體反壓技術，於模穴內建立高壓環境，於充填階段使熔膠變得更為緊實，以此解決產品密度分佈不均勻之問題，藉由上述兩項技術解決現今產業之瓶頸。 (2)英文 In the ceramic powder injection molding, since the ceramic raw material itself has no fluidity, it is necessary to use an additive to impart fluidity, which results in uneven distribution of the additive and the ceramic powder during molding, resulting in uneven distribution of product density and mechanical strength. Furthermore, fluidity is also one of the bottlenecks of the ceramic powder process. Poor fluidity can lead to defects such as warpage of the product. Therefore, the technology will introduce a supercritical fluid and gas counter pressure technology, change the inert gas into a supercritical state and then inject into the material tube to make the two evenly mixed. The characteristics of the supercritical fluid are used to increase the fluidity of the raw material, and the problem that the forming is prone to warpage is solved. At the same time, with the gas counter pressure technology, a high-pressure environment is established in the cavity, and the melt is made more compact during the filling stage. In order to solve the problem of uneven distribution of product density, the above two technologies can solve the bottleneck of the current industry.

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