사출금형에서 균형충전을 위한 새로운 러너시스템 멜트버퍼

다국어 초록 (Multilingual Abstract)

The injection mold with multi-cavity is essential for mass production of plastic products. Multi-cavity molds are designed to geometrically balanced runner system to uniformly fill to each cavity. However, despite geometrical balanced runner system, filling imbalances between cavity to cavity have always been observed in injection molding. To solve these problems, many studies such as Melt Flipper, RC Pin, and others have been presented. The results of these studies have been an effect on filling balances in multi-cavity molds. But, those have had a limitation that additional insert parts must have existed in the mold. In this study, a new runner system is suggested for filling balance between cavity to cavity using “Melt-Buffer” with simple change of runner shape. A series of simulation to confirm feasibility of Melt-Buffer?s effects was conducted using injection molding CAE program. Also, a series of injection molding experiment was conducted using plastic materials such as ABS and PP. As results of this study, feasibilities of filling balances by Melt-Buffer were confirmed.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. Melt-Buffer 러너시스템
• 3. 사출성형해석
• 4. 사출성형실험
• 5. 실험결과 및 고찰
• 6. 결론
• 참고문헌

참고문헌 (Reference)

1 제덕근, "다수 캐비티를 갖는 3매 구성 사출금형에서의 충전 불균형" 한국정밀공학회 21 (21): 117-121, 2004

2 정영득, "다수 캐비티 사출금형에 적용되는 새로운 균형 충전용 러너 시스템 개발" 한국소성가공학회 15 (15): 42-46, 2006

3 J. P. Beaumont, "Solving Mold Filling Imbalance in Multi-Cavity Injection Mold" 2 (2): 47-58, 1998

4 J. P. Beaumont, "Runner and gating design handbook" Hanser Publishers 74-,

5 J. P. Beaumont, "Revolutionizing Runner Design In Hot and Cold Runner Mold"

6 Y. S. Kwon, "On the new mold structure with multi-point gate for filling-balance mold" 99-123, 2007

7 J. P. Beaumont, "Mold Filling Imbalance in Geometrically Balanced Runner" 1 (1): 133-135, 1997

8 C. M. Kang, "Effects of processing Factors on Filling Imbalances in Multi-cavity Injection Mold" 53-57, 2004

9 Y. D. Jeong, "A Prediction of filling imbalance in the multi-cavity mold using 3D meshing method" 2008