Abstract: Abstract:The buffer component is an energy absorbing component in the case of over winding buffer, and its mechanical properties directly affect the effect of overwind buffering. In order to select the buffer component with better mechanical properties, taking the combination of steel strip and silicone rubber type buffer component as research object, make mechanical calculation and analysis. And using ANSYS to simulate the mechanical analysis of the cushioning element, the influence of the thickness of the silicone rubber and its position on the buffer component of the mechanical properties was investigated when the thickness of the steel strip was constant. The analysis results show that: when the structure and size of the overwind buffering device are constant, the horizontal distance c between the dynamic pressure roller and the fixed pressure roller is 4.5 mm when the over-rolling is applied, and the total thickness of the steel strip in the buffer component is fixed at 4 mm. When the thickness of the silicone rubber is 3 mm, the thickness of the left side of the silicone rubber is 1 mm, and the thickness of the right side of the steel strip is 3 mm, the mechanical properties of the cushioning element are optimal.