CASING CUTTING APPARATUS Russian patent published in 2007 - IPC B29B11/02 B29B17/04 

FIELD: technique used for simultaneous cutting of auto-tire casings along a number of cutting lines, and parts of casings, such as carcass-breaker-tread casing bracelet consisting of set of rubber layers reinforced with textile and metal cord.

SUBSTANCE: apparatus for simultaneous cutting along a number of cutting lines of reinforced composite material, such as casing with metal cord, has metal cylinder formed as roller with slots, and disk-type metal blades with cutting edges, said blades being arranged in accordance with arrangement of slots. Thickness of blade exceeds width of slots provided in cylinder. Cylinder has bores between slots, with shape of bore surfaces approximating to shape of surface of hyperboloid of revolution of one sheet. Maximum penetration depth of each disk-type blade into respective slot of cylinder until contacting of blade conical surfaces with outer edges of slots is selected from ratio: where Y is blade penetration depth; b is width of slot; β is angle between generatrices of blade conical surfaces. Apparatus provides simultaneous cutting along a number of cutting lines of carcass-breaker-tread bracelet regardless of number of reinforcing layers and size ratios of textile and metal cord filaments to sizes of apparatus, and also enables full cleaving of material under cutting process, which is successively fed to slots of cylinder.

EFFECT: increased efficiency and enhanced reliability in operation.

1 dwg