無頂出銷式超音波脫模技術

Ultrasonic Demolding System without Knock-out Pin

吳政道(Jheng-Dao Wu)

指導教授 ： 林忠志

共同指導教授 ： 王郁仁

國立虎尾科技大學/工程學院/機械與電腦輔助工程系碩士班/碩士(2014年)

摘要

塑膠成型技術製程上運用非常廣泛，在射出成型時上一般模具的頂出系統都會在成品零件上留下頂出的痕跡，當製作較小型的微結構元件，一般頂出系統的頂針通常會大於微結構，在頂出時就會留下痕跡，甚至會破壞零件表面的微結構，為了避免這種現象產生。因此，本研究是以Comsol模擬壓電陶瓷材料致動器的自然頻率與模態振型藉著模態分析結果找到致動器的共振頻率且為平面位移模態，利用Smooth Impact Drive Mechanism (SIDM)原理，設計出可以達到SIDM的致動器，將致動器裝置在射出成型模具上使模仁達到共振效果輔助來實現無頂出銷式超音波脫模技術。

關鍵字

射出成型 ； 超音波 ； 藍杰文換能器

並列摘要

In injection molding process, knock-out pins will leave ejector marks on the parts. While fabricating micro-structured components, the pins for normal ejector system are usually larger than the micro-structured ones. It would leave marks in ejection process and it would even destroy the exterior of micro-structured components sometimes. In order to avoid this situation, as a result, this research is to utilize Comsol to simulate the natural frequency and the modal shape of the Langevin transducer, and make use of Smooth Impact Drive Mechanism (SIDM) to design the actuator to eject the injection parts. The mold equipped with the double-layer Langevin transducer could eject the parts without knock-out pins in the plastic injection molding process.

並列關鍵字

Injection molding ； Ultrasonic ； Langevin transducer

參考文獻

[12]陳亮江，2005，中原大學-新型行進波式壓電線性馬達之研究，中原大學，碩士論文。

[1]E. Moreno, P. Acevedo, M. Fuentes, A. Sotomayor, L. Borroto, M. E. Villafuerte, L. Leija，2005，Design and Construction of a Bolt-Clamped Langevin Transducer，International Conference on Electrical and Electronics Engineering (ICEEE) and XI Conference on Electrical Engineering。

[2]M. Suzuki, H. Hosaka, T. Morita，2012，Resonant-Type Smooth Impact Drive Mechanism Actuator with Two Langevin Transducers，Advanced Robotics 26 277-290。

[3]T. Nishimura, H. Hosaka, T. Morita，2012，Resonant-type Smooth Impact Drive Mechanism actuator using a bolt-clamped Langevin transducer，Ultrasonics 52 75-80。

[4]T. Morita, H. Murakami, T. Yokose, H. Hosaka，2012，A miniaturized resonant-type smooth impact drive mechanism actuator，Sensors and Actuators A 178. 188- 192。