CAJ | 학술논문

油墨温度控制系统是无水胶印设备的重要控制组件之一，对保持油墨黏度稳定和印刷质量的一致性有重要影响。通过建立温控墨辊表面墨层热载荷时变函数模型，计算墨辊表面油墨平均温度发生变化时的热载荷变化量，根据对温控墨辊螺旋管道的传热性能参数进行等效，在采用涡流管作为温度双向控制伺服装置的前提下，确定了温控气体在设定出入温度差的条件下的输入流量，将温控气体的输入参数，包括流量值、入口温度值作为涡流管伺服控制器的输入参数，建立油墨温度PID整定控制模型，并基于 LabVIEW设计了控制系统。仿真结果表明控制模型合理，无水胶印油墨温控系统控制精度达到±1℃。results. The precision of the temperature controlling system on waterless offset printing press could be kept between ±1℃.
유묵온도공제계통시무수효인설비적중요공제조건지일，대보지유묵점도은정화인쇄질량적일치성유중요영향。통과건립온공묵곤표면묵층열재하시변함수모형，계산묵곤표면유묵평균온도발생변화시적열재하변화량，근거대온공묵곤라선관도적전열성능삼수진행등효，재채용와류관작위온도쌍향공제사복장치적전제하，학정료온공기체재설정출입온도차적조건하적수입류량，장온공기체적수입삼수，포괄류량치、입구온도치작위와류관사복공제기적수입삼수，건립유묵온도PID정정공제모형，병기우 LabVIEW설계료공제계통。방진결과표명공제모형합리，무수효인유묵온공계통공제정도체도±1℃。results. The precision of the temperature controlling system on waterless offset printing press could be kept between ±1℃.
The temperature controlling system of ink is the significant component and has important influence on the stability of ink viscosity and consistency of printing quality. The variable quantity of thermal load of the ink was calculated when its average temperature changed by modelling the time-variable function of the thermal load of the ink on the surface of oscillating ink roller. The input flow of temperature controlling medium was ascertained in the condition of given temperature deviation on the premise that the vortex tube was adopted as the bifunctional temperature controlling mechanism based on the e-quivalent processing of the heat conduction performance of the internal helical pipe of the roller. The characteristic parameters of the medium,including flow and temperature,were chosen as the input variables of the servo valve on the vortex tube for modelling the PID controlling of the ink temperature. The inking control system was designed by using LabVIEW software and the validity of modelling was verified by the simulation.