Method and apparatus for cutting elastomeric materials
AssigneeThe Goodyear & Rubber Company
InventorsJames Michael Hart, James Alfred Benzing II
Life of this patent
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Abstract
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 a with respect to the plane of the sheet being cut. Then the knives are moved to opposite edges of the sheet of elastomeric material.
Claims17
A method for cutting segments from a long sheet (1) of multilayered elastomeric material containing reinforcing cords (20) that are more or less parallel to one another and oriented more or less in the direction of a cut line (3), the method including the steps of:
- penetrating the sheet (1) and making an opening(33) with a penetrator/separator(40);
- inserting two ultrasonic knives (30) into opening (33), one on either side of the penetrator/separator;
- moving the knives (30) apart from the penetrator/separator (40) and apart from one another in opposite directions along the cut line (3) of the cut being made;
- and
- cutting the segments at a desired skive angle α.
An apparatus for cutting segments from a long sheet (1) of multilayered elastomeric material containing reinforcing cords (20) that are more or less parallel to one another and oriented more or less in the direction of a cut line (3), the apparatus characterized by:
- a penetrator/separator (40) for penetrating the sheet to form an opening (33);
- two ultrasonic knives (30) for inserting into opening (33) one on either side of the penetrator/separator;
- and
- means for moving the knives (30) apart from the penetrator/separator (40) and apart from one another in opposite directions along the cut line (3) of the cut being made.
Dependencies are inferred from the claim text.