Implementation of Micro Hot Runner System in Thermoplastic Injection Molding Multiple Micro Components
| Autor: | Meng-Yu Jiang, 江孟育 |
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| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 In present industrial applications, most of the hot runner systems are suitable for molding large-sized products. Only few studies are focused on small-sized hot runner system of multi-cavity products. The study is to develop a micro hot runner system for multiple micro molded components. The major concerns of this design are to reduce waste materials, to shorten the cycle time, to lower the cost and to instantly form multiple micro components, or to put multiple micro structures in small-spaced products. Twelve cell-phone keypads were selected as an example to be studied. And a micro-hot runner system was developed for their micro molding. Based on runnerless and flow balance, a runner plate to achieve uniform flow was proposed. The CAE software was used to simulate and to obtain optimum flow balance. To understand how different runner dimensions influence the uniformity of product’s weight, two different runner plates were made and compared. The experimental results reveal that the weight uniformity by the optimum runner design is better. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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