Mechanism Analysis And Application Of Displacement Guide On Winding Conveyance System Of Flexible Web

Usually the winding conveyance system is used to transport flexible web in the flexibleelectronics technology. Mechanism analysis and application of displacement guide areimportant contents for winding conveyance system. In this paper, the displacement guidewhich type is DR1075is the object of research. Works in the application, mechanism analysisand experimental verification are done around the displacement guide.Firstly, the relationship between the stress of web and the shear stress of chip isestablished. Based on the finite element method the relationship between the tension andstress of web is got. Theoretical basis of setting up of tension on winding conveyance systemis provided. Considering the need for the Positioning accuracy of electronic components, asolution of optimization for the lateral control system of guide is given.Secondly, the frequency characteristics analysis of structural parameters is carried outbased on the first-order dynamic model of lateral dynamics of a moving web. And the modelof guide is the best when the middle span equals to the rotation span and the detection span isas small as possible. The response time analysis of the speed and entrance span is carried out.The result shows that the smaller the speed, the better quality of lateral correction, and thevalue of entrance span should be selected appropriately.Then, the relational expression between bending moment and lateral deflection of web,and the relational expression between shear force and lateral deflection are given respectively.The web is considered as Timoshenko beam. The effect of parameters of web to the frequencycharacteristics of system is analyzed based on the second-order dynamic model of lateraldynamics of a moving web. It shows that the web width has greater effect on the frequencycharacteristics of system than other factors.Lastly, effects of speed of web, entrance span and tension of web to lateral correction areverified by experiments. Experimental results show that the smaller the speed of web, thesmaller the maximum overshoot and the forward displacement. The lager the entrance span,the smaller the overshoot, but the slower the speed of lateral correction. The change of tensionhas little effect to the quality of lateral correction when there is no relative sliding between theweb and rollers.