Intelligent heating control method

Abstract

The invention relates to an intelligent heating control method comprising the steps of collecting the ambient temperature value of surrounding environment and heating temperature values of heating areas through temperature collection modules, and feeding back the ambient temperature value and the heating temperature values to an industrial PC; counting and analyzing the collected ambient temperature value and the heating temperature values through the industrial PC, and controlling the heating areas corresponding to temperature control actuators through a driving module by the industrial PC for heating or heat dissipation; detecting the currents of the temperature control actuators through current transformers, and feeding back the currents to the industrial PC; calculating the shear heatof screw rods in the heating areas in unit time through the industrial PC according to the heating temperature values, the ambient temperature value and the currents of the temperature control actuators, and comparing the shear heat with the shear heat that the speed of the corresponding screw rod is permitted; and thus judging the health conditions of the screw rods in production. According to the intelligent heating control method, not only can the temperature control and regulation of the heating areas be more accurate, but also the health conditions of the screw rods in production can be judged in time, so that the production stability and reliability of an extruding machine are improved.

Description

technical field [0001] The invention relates to a control method, in particular to an intelligent heating control method. Background technique [0002] The extruder usually includes a barrel (also known as barrel) and a screw drive device. There is a screw in the barrel, and the screw is connected to the screw drive device. The front end of the barrel is provided with a feed port, and the rear end of the barrel is connected to a die. There is usually a screen changer between the rear end of the barrel and the die, and the screen changer is used to filter the plastic melt. There is usually a melt pump between the rear end of the barrel and the die (if the extruder is equipped with a screen changer, the melt pump is set between the screen changer and the die), the main function of the melt pump is It is to pressurize and stabilize the flow rate of the plastic melt from the barrel into the die head. Extruders are usually single-screw extruders (one screw in the barrel) or twi...

AI Technical Summary

Problems solved by technology

The traditional heating control method for each heating temperature zone is generally to collect the heating temperature value of each heating temperature zone through the temperature acquisition module and feed it back to the industrial PC. The industrial PC performs statistics and analysis on the collected heating temperature values. The industrial PC drives The module controls each temperature control actuator to heat or dissipate heat to the corresponding heating temperature zone respectively. However, since the influence of various process variables (such as the heat taken away by the surrounding environment, the melt from the heating temperature zone The heat taken away, etc.), resulting in the control and adjustment of the temperature of each heating temperature zone is often not accurate enough, which affects the production quality of the sheet; and in the production process of the extruder, the shear heat generated when the screw rotates will make the barrel And the melt temperature rises, if the shear heat exceeds the allowable range in the process, it will directly affect the quality of the produced sheet, resulting in unqualified sheet quality, and the above heating control method cannot timely judge whether the screw is in production. In case of problems, manual investigation and detection are required. Therefore, the reliability and stability of the extruder using the above-mentioned heating control method are not high, and the production quality of the sheet cannot be guaranteed.

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