Die injection molding forming measurement and control system and method

Abstract

The invention discloses a forming state measurement and control system and method in the injection molding die injection molding process, and belongs to the field of injection molding die forming automatic control. The problem of insufficient capability of existing die inner forming parameter fluctuation analysis is solved. Meanwhile, the die inner pressure and material temperature standard parameter curve is set, and parameterization of defective product screening during automatic production is achieved. A die forming measurement and control instrument comprises a measuring element, a transmitter, a central processing module, a storage module and a data communication module. The measuring element comprises a temperature sensor, a pressure sensor or a weighing sensor, and a temperature measuring point and a pressure bearing transmission rod are arranged in a die cavity. The central processing module periodically records the data, the pressure-time curve and the temperature-time curve are formed along with time, a qualified product curve recorded by the central processing module is manually screened, meanwhile, the qualified product section is set, defective products are screened out through a mechanical arm, and accordingly automatic production is achieved.

Description

technical field [0001] The invention relates to a measurement and control system and a measurement and control method for the molding process of injection molds, in particular to the quality control of product molding states in the development process of injection molding molds. Background technique [0002] The control of product quality requirements in the production process of injection molds mostly depends on the negative feedback of the screw pressure of the injection molding machine and the familiarity of the quality personnel with the product, and there is no specific and direct measurement and control of the impact on mold molding after adjusting the injection parameters. The injection process is a dynamic cycle process that can be divided into several stages. The injection cycle starts (the internal pressure of the barrel increases and the screw moves forward) → the melt is injected into the cavity → the cavity is filled (the cavity pressure increases , the filling ...

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Problems solved by technology

[0003] Through the understanding of the above-mentioned injection mold production process, we are convinced that the measurement and control of the internal pressure and temperature of the mold is necessary for automatic production, and the existing fluid pressure and temperature measurement and control cannot be installed in the mold cavity with a relatively small space, and there is no The matching control software can realize real-time monitoring of molding parameters inside the cavity, let alone large-capacity data comparison

[0004] Foreign developed countries have also made many attempts in this regard, but the accuracy and reliability cannot meet the requirements of the existing cavity mold development, and the cost is high and the interchangeability is poor. The single-piece and small-batch characteristics of cavity mold development itself urgently need a A mold injection molding measurement and control method that can adapt to the measurement and control of most mold cavities. Only by connecting with a PC can we further realize networked remote interaction

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