Energy-saving servo control system for injection molding machine

Abstract

The invention relates to an energy-saving servo control system for an injection molding machine. The energy-saving servo control system comprises a control module of the injection molding machine, a servo motor, a constant displacement pump, a control element and a performing element, and further comprises a servo controller, a pressure sensor and a speed sensor, wherein the servo controller comprises a data processing module, a torque conversion module and a speed conversion module; the control module of the injection molding machine comprises a data processing module which is respectively connected to the pressure sensor, the speed sensor, the torque conversion module and the speed conversion module; the torque conversion module and the speed conversion module are respectively connected to the servo motor; the pressure sensor is arranged on an oil outlet pipeline of the constant displacement pump; the speed sensor is arranged on the output shaft of the servo motor; and the servo motor is used for receiving a torque signal and a rotation speed signal which are independent from one another. Compared with the prior art, a purpose of regulating the control system by double closed-loop feedback of a pressure flow rate and rotation speed is realized, so that the working performance of the operation of the injection molding machine is relatively stable, and the energy utilization efficiency of the injection molding machine is improved.

Description

Technical field [0001] The invention relates to the field of injection molding machine control modules, in particular to an energy-saving servo control system for an injection molding machine. Background technique [0002] In recent years, with the rapid development of hydraulic transmission technology and electronic control technology, injection molding machines have been widely used in construction, automobiles, molds, home appliances, medical and other industries. Since 2006, the average annual growth of plastic consumption has been around 9%. my country has become one of the world's largest plastic products production and consumption markets. Therefore, energy saving and consumption reduction has become an economic development strategy, and the energy saving of injection molding machines has also received extensive attention. In recent years, the number of injection molding machines imported and exported in my country has basically remained at about 15,000, mainly hydraulic d...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an energy-saving servo control system for injection molding machines with more accurate control accuracy and excellent energy-saving effect in order to overcome the disadvantages of poor energy-saving effect and general control accuracy in the prior art.

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