Browse > Article
http://dx.doi.org/10.14702/JPEE.2016.121

A Study on Practical Tool Education for Improving Injection Molding Quality  

Shin, Ju-kyung (Department of Mechanical Engineering, Osan University)
Publication Information
Journal of Practical Engineering Education / v.8, no.2, 2016 , pp. 121-128 More about this Journal
Abstract
In injection molding process, the appearance quality issue occurs in most injection molded article. One of thermal designs for the mold was performed by increasing the cavity wall temperature with being as uniform as possible in any position. On the basis of the practical evaluation, the cavity wall temperature and finishing machined cavity surface under the optimum processing conditions are the most significant factors to avoid the appearance issue on the plastic part for a good cosmetic quality. Also, the wrong choice of gate type and location can have a considerable effect on the quality of a molded part and it's so important to keep the correct runner balance from each cavity. We've proposed the education training model of the practical tool technology course for the field oriented education to improve practical tool technology ability and optimized tooling design for injection molding quality which can be performed at the workplace substantially.
Keywords
Appearance quality; Cavity wall; Field oriented education; Practical tool technology;
Citations & Related Records
연도 인용수 순위
  • Reference
1 R. A. Malloy, Plastic part design for injection molding, Munich, Bavaria: Hanser, 1994.
2 D. Schauf, "Reproducing textures from the cavity surface to the surface of the thermoplastics moulding," Bayer Application Technology Information (584e), 1998.
3 O. Zollner, "Optimized mould temperature control," Plastic Business Group, Application Technology Information (1104 d,e), 1997.
4 W. Woebcken, International plastics handbook, Munich, Bavaria: Hanser, 1995.
5 P. Kennedy, Flow analysis of injection molds, Munich, Bavaria: Hanser, 1995.
6 B. Holthoff, "Basic principles in thermoplastics engineering," Battenfeld GmbH, Heidelberg, pp. 13-17, 1992.
7 F. Johannaber, Injection molding machines, Munich, Bavaria: Hanser, 1994.
8 M. Storck, "The process sequence in injection moulding of thermoplastics," Battenfeld GmbH, Heidelberg, pp. 56-63, 1992.
9 N. Rao and K. O'Brien, Design data for plastics engineers, Munich, Bavaria: Hanser, 1998.
10 E. Bociaga, T. Jaruga, K. Lucbczynska, and A. Gnatowski, "Warpage of injection moulded parts as the result of mould temperature difference," Archives of Materials Science and Engineering, vol. 44, no. 1, pp. 28-34, July 2010.
11 E. Erlenkamper, "Gate design for a high quality surface finish," Plastic Business Group, Application Technology Information (1125 d,e), pp. 8-22, 2000.
12 J. P. Beaumont, Runner and gating design handbook, Munich, Bavaria: Hanser, 2004.
13 J. P. Beaumont, J. H. Young, and M. J. Jaworski, "Mold filling imbalances in geometrically balanced runner system," Journal of Reinforced Plastics and Composites, vol. 18, no. 6, pp. 572-590, April 1999.   DOI
14 E. Bociaga and T. Jaruga, "Visualization of melt flow lines in injection moulding," Journal of Achievements in Materials and Manufacturing Engineering, vol. 18, pp. 331-334, 2006.
15 P. Thienel, Guide to surface defects on thermoplastic injection molded parts, Ludenscheid, NRW: Kunststoff-Institut, 1992.