Fully-electric ultra-high speed injection molding PVT (Pressure Volume Temperature) online measurement and control method

Abstract

The invention discloses a fully-electric ultra-high speed injection molding PVT (Pressure Volume Temperature) online measurement and control method. By using a melt metered through plasticization in a cylinder as an object, a thermodynamic state (P0, T0, V0) of a highly-compressed melt before injection as a control starting point and the thermodynamic state (P1, T1, V1) of the melt in the cylinder after injection molding as a control ending point, through online detection of a PVT relation characteristic of a polymer in an ultra-high speed injection molding process, by depending on a high-pressure control system and a high-response executing mechanism of a fully-electric ultra-high speed injection molding machine and using the PVT relation characteristic of the ultra-high speed injection molded polymer as the guidance, precision control of ultra-high speed injection molding is realized. The fully-electric ultra-high speed injection molding PVT online measurement and control method has the advantages of high control precision and high cost performance.

Description

technical field [0001] The invention relates to an ultra-high-speed injection molding measurement and control method, which belongs to the field of polymer material molding processing. Background technique [0002] In the fields of aerospace, biomedical engineering and consumer electronics, the urgent requirements of "ultra-light, ultra-thin, and ultra-precision" for injection molded products have been put forward. Conventional injection molding can no longer meet the molding requirements. Ultra-high-speed injection molding is widely used. Production of thin-walled precision injection molding products such as bare boards and microfluidic chips. Ultra-high-speed injection molding requires injection molding equipment to provide ultra-high injection speed and high injection pressure, stable plasticizing quality, high control precision and wide controllable range. In addition, the injection molding machine is required to be stable throughout the molding process. [0003] Gener...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the molding defects caused by the drastic changes of the polymer melt during the ultra-high-speed injection molding process, and to provide an all-electric ultra-high-speed injection molding PVT online measurement and control method with high control precision and high cost performance

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