This model is used for vibration of vibration plate, and the positioning of the top lift of the cylinder is guaranteed to be one at each time, which is a good material model in the production.In the design process, this mode can be used to ensure that each feeding is one, and the timing of the material can be controlled by the reflection fiber to control the spacing between the materials.The model is a good material model.if you like,you can paypal for you to get this models or if you have any questions also you can email to me.