TIRE CASINGS CUTTING DEVICE Russian patent published in 2008 - IPC B29B17/02 B02C18/18 

FIELD: mechanical engineering industry; rubber industry; other industries; devices for cutting of the tire casings.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering industry and may be used at cutting of the tire casings and their parts, for example, the frame-breaker-tread strip of the tire manufactured from several layers of the rubber, reinforced by the textile and metallic cord. The device for cutting of the tire with the metal cord includes the metallic disk with the pit and the disk metallic blade with the blade end. The device has the thickness of the metallic blade exceeding the pit width in the metallic disk. The blade end of the blade has four conical surfaces. The conical surfaces contacting among themselves and forming the cutting edge are made with the wide angles at the vertexes of the appropriate truncated cones. The lateral conical surfaces of the blade end not contacting each other are made with the smaller angles at the vertex of the appropriate truncated cones. Each surface of the part of the blade end of the blade being inside the disk pit is the conical surface with the wide angles at the vertex of the truncated cones. Each surface of a part of the blade end being outside the pit at the contact of the blade with the disk is the partially conical surface with the smaller angles at the vertexes of the truncated cones and the partially conical surface with the wide angles at the vertexes of the truncated cones. The device ensures the complete cutting of the frame-breaker-tread strip of the tires irrespective of the number of the reinforced layers and the ratio of the dimensions of the filaments of the metallic and textile cord with the overall dimensions of the device.

EFFECT: the invention ensures the complete cutting of the frame-breaker-tread strip of the tires irrespective of the number of the reinforced layers and the ratio of the dimensions of the filaments of the metallic and textile cord with the overall dimensions of the device.

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