Research on modeling method of winding tension system for gravure printing machine

The tension control technology of unit-type gravure printing machine is very important. The constant printing tension is the key factor to ensure the overprinting quality. So the research on modeling theory and control technology of control system becomes an important problem to restrict the technology development of unit-type gravure printing machine. In this paper, the winding tension system of Shaanxi Beiren FR400ELS unit type of gravure printing machine is taken as the research object, according to the characteristics of gravure press tension system of multi variable, nonlinear and strong coupling, the nonlinear coupling model of winding tension system is established by the coupling method. Based on the working mechanism the subsystem of tension control system, the mathematical models of the two cylinders, swing roller and the winding roller mechanism are established. The dynamic equation of the winding tension system in torque mode is deduced. It provides a theoretical basis for the further study of the tension control of gravure press.