论文信息 - Capacitive transducer for in-mold monitoring of injection molding

Capacitive transducer for in-mold monitoring of injection molding

A capacitive transducer is developed for online monitoring of the in-mold material status for injection molding, particularly for measurements of melt-front position and flow-rate. This paper will show, in addition to fulfilling its design purposes, that such a sensor can also be effectively used for the detection of the start and end of mold filling, the time of gate freezing, and over-packing. Polym. Eng. Sci. 44:1571–1578, 2004. © 2004 Society of Plastics Engineers.

Furong Gao | Guohua Chen | Xi Chen

[1] Furong Gao,et al. Dynamics and Control of Surface and Mold Temperatures in Injection Molding , 1993 .

[2] M. Viens,et al. On-line ultrasonic monitoring of the injection molding process , 1997 .

[3] Wouter Olthuis,et al. A sensitive differential capacitance to voltage converter for sensor applications , 1999, IEEE Trans. Instrum. Meas..

[4] W. I. Patterson,et al. Cavity pressure dynamics and self-tuning control for filling and packing phases of thermoplastics injection molding , 1996 .

[5] J. Davidse. Analog Electronic Circuit Design , 1991 .

[6] A. R. Blythe,et al. Electrical properties of polymers , 1979 .

[7] D. D. Denton,et al. A solid-state relative humidity measurement system , 1990 .

[8] D. Dowling,et al. Visualization of Injection Molding , 1998 .

[9] R. Pearson. Microstructural effects in capacitive composition measurements , 1990 .

[10] Robert Puers,et al. Capacitive sensors: When and how to use them☆ , 1993 .

[11] Anthony J. Bur,et al. Fluorescence monitoring of polymer injection molding: Model development , 1997 .

[12] Jan-Erik Sigdell. A Principle for Capacitance Measurement, Suitable for Linear Evaluation of Capacitance Transducers , 1972 .

[13] Hiroshi Kobayashi,et al. A study of a capacitance-type position sensor for automotive use , 1990 .

[14] W. Heerens. Application of capacitance techniques in sensor design , 1986 .