Injection molding pressure control system and control method

Abstract

The invention discloses an injection molding pressure control system and method, and the system comprises a mold pressure induction module, a nozzle pressure induction module, a comparison module, a drive control module, a speed measurement module, a PID control module and a main control module, the main control module is connected with the nozzle pressure sensing module, the nozzle pressure sensing module is connected with the PID control module, the driving control module is connected with the speed measuring module and the PID control module, the speed measuring module is connected with the comparison module, the comparison module is connected with the PID control module, and the main control module is connected with the PID control module. The invention further discloses a control method of the system. According to the invention, accurate pressure control is carried out on the injection process and the pressure maintaining process through the PID control module, so that the quality of injection-molded products is improved.

Description

technical field [0001] The invention relates to the technical field of injection molding machine control, in particular to an injection pressure control system and a control method. Background technique [0002] At present, plastic products are widely used in modern society. From daily necessities to industrial accessories and medical equipment, plastic products are inseparable everywhere. People's quality requirements for plastic products are also gradually improving. However, the traditional injection molding method The obtained plastic products have some deformation due to the injection pressure during the injection molding process, or shrink or warp due to insufficient pressure during the holding pressure process. Therefore, how to effectively carry out accurate and effective injection molding process and forming process? Pressure control has become a problem that must be considered in injection molding production. [0003] The invention patent with the patent number of...

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Problems solved by technology

[0004] Aiming at the problem that the injection pressure control lags behind and the rate of pressure change cannot be accurately controlled, the present invention provides an injection pressure control system and control method, which uses a PID control module to control the rate of pressure change during injection and the injection pressure to achieve To achieve the purpose of timely and precise control of injection pressure and pressure change rate

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