Linking machine, comprising: - a fixed unit comprising a support frame, - and a mobile unit comprising: - a feed device of a fabric along a longitudinal direction (Y-Y), the feed device comprising blocking means of the fabric, configured to keep the fabric pressed on the feed device, - a positioning device of a needle along a transverse direction (X-X), perpendicular to said longitudinal direction (Y-Y) and coplanar with the fabric, - an actuation device of said needle along a vertical direction (Z-Z), perpendicular to said longitudinal (Y-Y) and transverse (X-X) directions, to perform the linking, wherein - the machine comprises a camera suitable for identifying a guide thread arranged on at least one fabric to be stitched, said guide thread being inserted inside the fabric, thereby entering and exiting the fabric, so as to form a plurality of segments, - the machine comprises a processing and control unit, operatively connected to the camera and to actuators of the feed device of the fabric, of the positioning device of the needle and of the actuation device of the needle, - so as to determine in real-time a target stitching position of the needle depending on the guide thread and to control in real-time the feed device of the fabric, the positioning device of the needle and the actuation device of the needle to reach said target stitching position of the needle, wherein the linking machine is equipped with an ultraviolet-light, lighting system, to highlight said guide thread, said guide thread being phosphorescent, characterised in that said ultraviolet-light, lighting system is fitted at the blocking means of the fabric. - a fixed unit comprising a support frame, - and a mobile unit comprising: - a feed device of a fabric along a longitudinal direction (Y-Y), the feed device comprising blocking means of the fabric, configured to keep the fabric pressed on the feed device, - a positioning device of a needle along a transverse direction (X-X), perpendicular to said longitudinal direction (Y-Y) and coplanar with the fabric, - an actuation device of said needle along a vertical direction (Z-Z), perpendicular to said longitudinal (Y-Y) and transverse (X-X) directions, to perform the linking, wherein - the machine comprises a camera suitable for identifying a guide thread arranged on at least one fabric to be stitched, said guide thread being inserted inside the fabric, thereby entering and exiting the fabric, so as to form a plurality of segments, - the machine comprises a processing and control unit, operatively connected to the camera and to actuators of the feed device of the fabric, of the positioning device of the needle and of the actuation device of the needle, - so as to determine in real-time a target stitching position of the needle depending on the guide thread and to control in real-time the feed device of the fabric, the positioning device of the needle and the actuation device of the needle to reach said target stitching position of the needle, wherein the linking machine is equipped with an ultraviolet-light, lighting system, to highlight said guide thread, said guide thread being phosphorescent, characterised in that said ultraviolet-light, lighting system is fitted at the blocking means of the fabric. - a feed device of a fabric along a longitudinal direction (Y-Y), the feed device comprising blocking means of the fabric, configured to keep the fabric pressed on the feed device, - a positioning device of a needle along a transverse direction (X-X), perpendicular to said longitudinal direction (Y-Y) and coplanar with the fabric, - an actuation device of said needle along a vertical direction (Z-Z), perpendicular to said longitudinal (Y-Y) and transverse (X-X) directions, to perform the linking, wherein - the machine comprises a camera suitable for identifying a guide thread arranged on at least one fabric to be stitched, said guide thread being inserted inside the fabric, thereby entering and exiting the fabric, so as to form a plurality of segments, - the machine comprises a processing and control unit, operatively connected to the camera and to actuators of the feed device of the fabric, of the positioning device of the needle and of the actuation device of the needle, - so as to determine in real-time a target stitching position of the needle depending on the guide thread and to control in real-time the feed device of the fabric, the positioning device of the needle and the actuation device of the needle to reach said target stitching position of the needle,