A production line (100,200,300,400) for manufacturing wound core components (10,10') of dynamo electric machine, the production line comprising: - a central processing zone comprising at least a winder (104,104') for winding coils to produce wound core components; - a downstream processing zone for finishing the wound core components; the production line being characterized in that it further comprises: - a first load and unload device arranged to transfer the core components to be wound to at least a winder (104,104') from a waiting position, or from an upstream transport carrier located at a first position, wherein the upstream transport carrier is arranged to transfer core components to be wound from an upstream processing zone; and - the first load and unload device arranged to transfer wound core components from the at least a winder (104,104') to a downstream transport carrier located at a second position, wherein the downstream transport carrier is arranged to transfer wound core components to the downstream processing zone; wherein the upstream transport carrier is arranged to move with alternative backwards and forwards motion on a same travel stretch between the upstream processing zone, and the central processing zone, and the downstream transport carrier is arranged to move with alternative backwards and forwards motion on a same travel stretch between the central processing zone and the downstream processing zone; or wherein the upstream transport carrier is arranged to move on a recirculation travel conveyor between the upstream processing zone and the central processing zone, and the downstream transport carrier is arranged to move on a recirculation travel conveyor between the central processing zone and the downstream processing zone. - a central processing zone comprising at least a winder (104,104') for winding coils to produce wound core components; - a downstream processing zone for finishing the wound core components; - a first load and unload device arranged to transfer the core components to be wound to at least a winder (104,104') from a waiting position, or from an upstream transport carrier located at a first position, wherein the upstream transport carrier is arranged to transfer core components to be wound from an upstream processing zone; and - the first load and unload device arranged to transfer wound core components from the at least a winder (104,104') to a downstream transport carrier located at a second position, wherein the downstream transport carrier is arranged to transfer wound core components to the downstream processing zone; the upstream transport carrier is arranged to move with alternative backwards and forwards motion on a same travel stretch between the upstream processing zone, and the central processing zone, and the downstream transport carrier is arranged to move with alternative backwards and forwards motion on a same travel stretch between the central processing zone and the downstream processing zone; or wherein the upstream transport carrier is arranged to move on a recirculation travel conveyor between the upstream processing zone and the central processing zone, and the downstream transport carrier is arranged to move on a recirculation travel conveyor between the central processing zone and the downstream processing zone.