The detection of filling-to-packing switchover point during injection molding plays a crucial role in ensuring the quality of the molded *** detection methods,such as using predetermined screw cushioning or checking i...
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The detection of filling-to-packing switchover point during injection molding plays a crucial role in ensuring the quality of the molded *** detection methods,such as using predetermined screw cushioning or checking injection time have the disadvantages of depending on human experience and failure of adaptation to process parameter *** study presents a filling-to-packing detection method using the theory of singularity detection based on wavelet transform modulus maxima,according to the jump feature at filling-to-packing *** adopted the pressure profile of a previous batch to obtain wavelet decomposition scale and switching threshold etc.,and then used sliding window to conduct on-line detection of switch *** experimental results indicated that the innovative switchover method yielded a more uniform product mass than any traditional methods.
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