METHOD, PROCESS AND PLANT FOR BUILDING TYRES Russian patent published in 2019 - IPC B29D30/36 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to a method and plant for building tyres. According to the method, the carcass sleeve is situated in radially external position with respect to a toroidal forming drum arranged in a first radially contracted operative condition. Said carcass sleeve is shaped according to a toroidal configuration while the forming drum is positioned inside the carcass sleeve. During shaping of the carcass sleeve, the forming drum is radially expanded up to a second radially expanded operative condition. Upon completed shaping, the carcass sleeve is coupled to the forming drum in the second operative condition. Said forming drum, coupled to said shaped carcass sleeve, is arranged in proximity to at least one device for building at least one belt layer at a radially external position relative to said shaped carcass sleeve. Moreover, the connection of the carcass sleeve of the toroidal shape with the forming drum is performed at the shaping stage.

EFFECT: large geometric and structural accuracy of individual components and optimal positioning of each of them relative to other components of the tyre being manufactured is ensured.

42 cl, 7 dwg