Method for checking a process for building a tyre and system for check thereof

A method for checking a process for building a tyre, the process for building comprising the sequential deposition of an ordered plurality of N semi-finished elements on a drum, the method comprising:

• establishing an ordered plurality of N classes of drum states, wherein a first class corresponds to a bare drum state and an i-th class, with i ranging from 2 to N, corresponds to a drum state including an i-1th semi-finished element deposited in radially outermost position;
• wherein the method comprises, before deposition of the i-th semi-finished element:
• acquiring at least one image of a current drum state;
• processing said at least one image to associate to said current drum state a current class among said ordered plurality of N classes of drum states;
• authorising the deposition of said i-th semi-finished element on the basis of a comparison between said current class and an expected class, said expected class being the i-th class in said ordered plurality of classes.

A system for checking a machine for building a tyre, the machine being structured to deposit in sequence an ordered plurality of N semi-finished elements on a drum, the system comprising:

• an image acquisition device, and
• a command and control unit programmed and configured for, before deposition of an i-th semi-finished element:
• acquiring from said image acquisition device at least one image of a current drum state,
• processing said at least one image to associate to said current drum state a current class among an ordered plurality of N classes of drum states, wherein a first class corresponds to a bare drum state and an i-th class, with i ranging from 2 to N, corresponds to a drum state including the i-1th semi-finished element deposited in radially outermost position, and
• authorising the deposition of said i-th semi-finished element on the basis of a comparison between said current class and an expected class, said expected class being the i-th class in said ordered plurality of classes.