In order to resolving lodging and breaking straw in gripping delivery,the key components are studyied,and the conveying chain is designed,thus,those problems are effectively solved.

A reasonable combination of an elbow mechanism and a lever mechanism is introduced, it is a plier with the properties, such as safty holding, laborsaving, convenience and ad adjustability.

The relationships between clamping and cutting on straw cutting system;

Analysis of clip-model of frictional welding with 3D finite elements;