Pre-compounded cushion rubber for tire and preparation method of pre-compounded cushion rubber

The preparation method comprises the following steps: step a: preparing raw materials according to a ratio, step b: putting the raw materials prepared in the step a into an internal mixer for high-temperature and high-pressure treatment, step c: putting the raw materials treated in the step b into an extruder for extruding the cushion rubber, and step c: putting the cushion rubber into an extruder for extruding. The method comprises the following steps of 1, extruding the cushion rubber, and placing the extruded cushion rubber in a cooling device for cooling treatment, 2, placing the cushion rubber in a dividing and cutting machine for cutting, placing the cut cushion rubber in a hydraulic vulcanizing machine for hydraulic forming, and 3, placing the cushion rubber subjected to hydraulic forming in a storage device for storage. The preparation method of the pre-compounded cushion rubber is simple to operate, the cushion rubber forming effect is good, the production cost of the cushion rubber can be reduced, t