Control method for presetting rotation number of screw of extruder

Abstract

The invention discloses a control method for presetting a rotation number of a screw of an extruder. A temperature sensor for measuring the temperature of a sizing material is mounted in the extruder;and the extruder and the temperature sensor are both connected to a MES system. The control method comprises the steps that: the MES system measures and records the temperature of the sizing materialin the stop period of time of the extruder; the MES system compensates an extruder screw rotation number set value R0 and a linkage line speed set value V0 according to a temperature change value delta T of the sizing material in the stop time; and lasting time t1 and recovery time t2 of an extruder screw rotation number R and a linkage line speed V after compensation are set. On the basis of effective cooperation among the MES system, the extruder and a linkage line, the extruder screw rotation number and the linkage line speed are compensated according to the temperature change of the sizing material in the extruder, so that the weight value of products extruded by the extruder after one-key startup is quickly stabilized, the reject ratio of the products of the sizing material is greatly reduced, and the problems of long fluctuation time and great fluctuation amplitude of the weight value of the products of the sizing material after one-key startup in the prior art are effectively solved.

Description

technical field [0001] The invention relates to the technical field of extruder control, in particular to a control method for preset screw rotation number of an extruder. Background technique [0002] In the traditional extrusion extruder production operations, the different skill levels or operating methods of the extrusion extruder operators have a great influence on the qualified rate and production efficiency of the extruded rubber products. Therefore, the production operating conditions or production The curing of parameters is particularly important. In the existing technology, one-button start has replaced manual operation for automatic start-up of the extruder to reduce the failure rate caused by manual operation factors. One-key start means that the extruder screw rotation number and linkage line are preset through the MES system. Starting parameters such as speed, glue supply width, etc., the production of the extrusion extruder starts, one-key start, and the pro...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of extruder replacement due to specification change or abnormal shutdown, etc., after starting the extruder with one button, the weight value of the extruded rubber product is heavy first and then light, and the weight value fluctuates greatly, fluctuates for a long time, and is stable In order to solve the problem of poor performance, the present invention provides a control method for preset screw rotation number of the extruder, which compensates and adjusts the screw rotation number of the extruder and the linkage line speed according to the temperature change value of the rubber material during the shutdown period, and realizes The weight value of the extruded product is fast and stable after one-key start, which greatly reduces the occurrence of defective rate of extruded rubber products

Images