Method for joining a belt having a reinforced structure with interpenetrated spirals

A method for joining a belt into a dosed loop, the belt having a reinforcement structure incorporated in a filling material, wherein the reinforcement structure includes a plurality of spirals parallel to each other and transverse with respect to a longitudinal axis of the belt, wherein adjacent spirals are interpenetrated and are connected to each other by transverse wires parallel to the spirals and wherein each of the transverse wires extends into two adjacent interpenetrating spirals, wherein the method comprises:

• identifying a transverse line along which carrying out cutting the belt,
• incising a lateral zone of a face of the filling material in a vicinity of one end of a transverse wire which extends along said transverse line, and extracting the one end of said transverse wire outside the filling material,
• compressing the belt along two transverse compression zones parallel and located on opposite sides with respect to said transverse line,
• gripping said one end of the transverse wire protruding outside the filling material and extracting the transverse wire by applying a traction in a direction transverse to the longitudinal axis while the belt is compressed along said transverse compression zones,
• disengaging said two adjacent interpenetrating spirals which were previously joined together by the transverse wire which has been extracted,
• cutting the filling material between said two adjacent interpenetrating spirals disengaged from each other,
• interpenetrating end spirals of two opposite ends of the belt so as to be mutually interpenetrated, and
• inserting a new transverse wire into the mutually interpenetrated end spirals to join the belt in a dosed loop,