Lap pressure mechanism and its pressure of HC181 Unilap

In order to obtain better lap forming and fine quality of combed slivers,the pressure mechanism and pressure on HC181 Unilap were studied.Kinematics and mechanical mathematical models of the pressure mechanism were developed to compile MatLab program and the pressure curve that kept lap forming better has been computed and drawn,and the corresponding pressure equation was simulated,which was put into PLC(programmable logic controller) for controlling electronic ratio valve and regulating cylinder pressure,thus effecting on-line control of lap pressure in the course of lap forming.Weight unevenness of practical lap produced by above method can decrease to 0.1%.