The Making And Studying Of The Initiative Plastic Film Pre-stretch Machinery.

This paper will decribe a making and studying of a kind of initiative plastic film pre-stretch machinery. This paper discusses a lot of virtues of the the making and studying of the initiative plastic film pre-stretch machinery. This pre-stretch machinery benefits production, It is different from the tradition machine.This pre-stretch machinery overcomes some abuses in primary passive pre-stretch machinery.It has many characteristics of initiative pre-stretching.It can make packed goods reach a perfect effect.The machine has broad applications in casing industry.The advantages of the machine are initiative and it increases check tache of speed difference. The speed of out film equals the speed of wrapping.Because the press of the roller,The machine realizes initiative stretching.The system of timing uses a kind of closed loop of PWM frequency conversion timing system.This paper will relate to the design formative technique of 3D,and the anslysis of key components based on Pro/ENGINEER and COSMOSEXPRESS,and the design of the PWM system,also the movements simulation of the machine based on MATLAB.Through the study of this task,try to settle some problems in casing industry. At the same time I can master several CAE softwares,and study how to use them in industry.