橋接式按鍵射出成形翹曲之分析研究

Abstract

塑膠射出成型是產業界常見的製造方法，通常模具的設計或射出成型製成的參數設定，都依賴設計者的經驗或是試務法，經由多次的測試找出符需求的設計。

本研究主要是探討數位相機按鍵結構，常用懸臂式方式來設計按鍵，在經過熔膠填充的過程中，對於不同造型的懸臂與不同的模具水路設計，對於翹曲量的影響。利用3D軟體Pro-Enginee建構產品形狀與模流分析軟體Moldflow進行模擬產品射出情況。在實驗的控制因子方面，是採用橋接式按鍵形狀、模具溫度、冷卻時間、保壓壓力和水路設計等參數因子。實驗結果發現橋接式按鍵形狀為最顯著因子，具有最大的影響力。利用田口實驗計畫法分析，從各因子取出S/N比最大水準，可得最佳的成形參數並得到最小的翹曲量。期望本研究的結果可以提供機構工程師做為設計懸臂式按鍵之參考。

Plastic injection molding is a common method for manufacturing industry; usually injection molding mold design or made of parameter setting, are dependent on the designer's experience or trial Justice, identify the character design needs through several tests.

This study was to investigate the major digital camera button structure, common cantilevered manner to button of design, through the filling in the melt process, for different shapes of the cantilever with different mold design water, affected for the amount of warpage. Utilization 3D Pro-Engineer software constructs the product shape and moldflow software analysis simulation products emitted situation. In aspects of the control factor of the experiment, is the use of the bridge-button shape, mold temperature, cooling time, holding pressure and waterway design and other parameters factors. It was found that the shape of the bridge keys most significant factor having the greatest influence. Analyzed using Taguchi experimental planning law, taken out S / N ratio of the maximum level from each of the factors, can get the best of shape parameters and obtain the minimum amount of warpage. Expect results of this study can provide organizations engineer, as the reference design of the cantilever button.