Injection Unit Precision Inspection according to Control Method of Injection Molding Machine

Title & Authors
Injection Unit Precision Inspection according to Control Method of Injection Molding Machine
Jung, Hyun-Suk; Yoo, Joong-Hak;

Abstract
A study of a precision test according to the control method of an injection molding machine was carried out. The effects of the screw stroke, holding pressure, melt temperature on both the hydraulic and electric injection molding machine were examined. In addition, hypothesis testing was performed to determine the deviation of the data obtained in the experiments. The conclusions obtained in this study were as follows. Significant deviations in the screw stroke, melt temperature and holding pressure occurred in that order. The hydraulic type showed significantly more variation between the products compared to the electric type. In addition, using a mini tab from the statistics program, a hypothesis was proposed and the P value of the injection stroke, holding pressure, melting temperature injection stroke and melting temperature had adopted a null hypothesis ($\small{H_0}$). The holding pressure, which showed mutual differences, adopted an alternative hypothesis ($\small{H_1}$).
Keywords
Electric injection molding machine;Hydraulic injection molding machine;Holding pressure;Melt temperature;Screw stroke;
Language
Korean
Cited by
References
1.
Global Information Premium Market Research Report: Global Injection molding machine market 2014-2018: http://www.giikorea.co.kr

2.
H. S. Jung, and J. H. Yoo, "An Experimental Study on Credibility Test of Hydraulic Injection Molding Machine", Journal of the Korean Society for Precision Engineering Autumn Conference., pp. 471-472. October, 2010.

3.
H. S. Jung, and J. H. Yoo, "Tie bar Elongation Test of Toggle type Injection Molding Machine", Journal of the KSMTE., Vol.21, No.4 pp. 672-676, January, 2013.

4.
H. S. Jung, and J.H. Yoo, "Uncertainty Evaluation for the Determination of Injection Temperature in Injection Molding Machine", Journal of the KSDME Summer Conference., pp. 8-12, June, 2010.

5.
H. S. Jung, and J. H. Yoo, "An Experimental Study on the Measurement Performance of Injection molding machine", Journal of the KSMTE Spring Conference., pp. 134-135, May, 2011.

6.
S. W. Kim, and J. H. Park,, M. Y. Lyu, Y. J. Jin, and D. Kim, "Variation of Temperature and Pressure in the Cavity for Operational Conditional of Injection Molding", Proceedings of the JTMP autumn annual meeting, pp. 70-74, September, 2004.

7.
D. M. Lee, B. K. Han, and S. H, Lee,"Injection Mold with Cavity Pressure/Temperature Sensors for Standard Tensile Test Specimen", Journal of the Korean Society for Precision Engineering, Vol.24 No.11, pp. 84-90, November, 2007.

8.
B. K. Choi, and D. G. Lee, "A Study on the Process Capability Analysis of MIM Product", Journal of the Korea Society of Machine Tool Engineers, Vol. 19, No. 1, pp. 57-64, January, 2010.

9.
H. S. Jung, and J. H. Yoo, "Mold Opening Stroke according to Injection Speed" Proceedings of the International Conference of Manufacturing Technology Engineers, pp. 254, October, 2010.