Dynamics Of Key Mechanism Of The Corrugated Machine

With the rapid development of e-commerce and other fields,corrugated packaging is widely used in many fields of product packaging and transportation due to its advantages of low cost,easy processing and recyclability.Driven by market demand,corrugated board enterprises continue to develop in the direction of high efficiency and environmental protection.Therefore,in order to develop a high efficiency,high quality of the corrugated machine,this paper including the hydraulic system of the important mechanism of the corrugated machine has been studied.In the process of the work of the corrugated machine,the corrugated machine has the problem of excessive vibration,resulting in the poor quality of the corrugated paper.In this paper,the static and dynamic analysis of the pressure roller mechanism with hydraulic system was made,and the mathematical relationship between the ideal and actual center distance between the pressure roller and the upper corrugated roller was established in statics,and the differential equation of its vibration was established in dynamics.Based on the hydraulic principle,the influence of key factors such as hydraulic oil pressure,gas content,piston rod elongation and inner diameter of hydraulic cylinder on the rigidity of hydraulic oil was investigated.The dynamic solution of the mechanism and its vibration response were obtained,which can provide some theoretical references for future optimization.The hydraulic system has a great influence on the vibration response of the pressure roller mechanism and is one of the key parts of the pressure roller mechanism.The mathematical models of the body part and the pipe part of the skin accumulator were studied,and the mechanical model of the skin accumulator was established.The natural frequency,equivalent stiffness and equivalent damping coefficients of the accumulator were obtained by Laplace transform.Based on the vibration response model,the influence of pipeline length of accumulator on the vibration of pressure roller mechanism was compared and analyzed.Then the orthogonal experiment was carried out to analyze the sensitivity of some key factors of the pressure roller mechanism and provided theoretical guidance for optimization.The dynamics of the corrugated roller mechanism was studied,the expression of center distance variation of the upper and lower corrugated rollers was obtained,and the deflection stiffness and contact stiffness of the upper and lower rollers were calculated.The amplitude response of the lower corrugated roller support at several sets of different angular speeds was obtained by using SIMULINK with the center distance variation as the excitation.Then ADAMS was used for dynamic simulation,and the amplitude response obtained by simulation was compared with that obtained by Lagrange.It was found that increasing the angular velocity could reduce the vibration of the lower roll.The vibration test of the pressure roller mechanism was carried out,and the vibration acceleration signal after pretreatment was compared with the amplitude of theoretical acceleration,and the Fourier transform was applied to obtain the spectrum of each,which verified the accuracy of the mathematical model.Roller gear tooth profile on the addendum circle and the distance between the tooth tip and the center of the upper roller were studied,it was found that the acceleration amplitude of the pressure roller mechanism can be reduced by reducing the radius of the tooth tip and the distance between the tooth tip and the center of the upper roller,which provides a certain theoretical basis for the design direction of the corrugated roller.