METHOD AND APPARATUS FOR CUTTING ELASTOMERIC MATERIALS

摘要

A method and apparatus for cutting segments from a long sheet (1) of multilayered elastomeric material. An initial opening is formed in the sheet without severing reinforcing cords (20) within the elastomeric sheet by a penetrator/separator (40). Two ultrasonic knives are inserted on either side of the penetrator/separator (40) and positioned to cut the sheet at a small skive angle alpha with respect to the plane of the sheet being cut. Then the knives are moved to opposite edges of the sheet of elastomeric material.