Development of an in-process, gap-caused flash monitoring system in injection molding processes

Abstract

This paper describes the development of an in-process, gap-caused flash monitoring (IGFM) system for injectionmolding machines. An accelerometer sensor was integrated in the proposed IGFM system to detect the difference of the vibration signals between flash and non-flash products in the last period of the injection molding filling stage. Through an approach suggested by the statistical process control mechanism, the threshold in the decision-making mechanism of this system was established. That threshold then was used by the IGFM system to determine if flash occurred in the molded products when the machine was running. An experiment was designed and performed by manipulating the variables of gap and nogap. The experimental testing results indicated that this system could successfully monitor injection-molded products' flash status with approximately 94.7% accuracy while the machine was in process.

Analysis of Insulating Object Plastic Injection Forming of Bicycle Dynamo Hub Power Connector

“…Kamaruddin et al [1] improve the quality characteristic of an injection moulding product (plastic tray) made from blends plastic (75% polypropylene (pp) blends with 25% low density polyethylene (LDPE)) by optimizing the injection moulding parameters using Taguchi method. Zhang et al [2] The gap-caused flash monitoring (IGFM) system was developed by integrating the application of an accelerometer sensor. Fu.…”