Automatic machine for the production of double and triple spike chains already welded in the machine. The new, patented welding system allows an evenly distributed welding over 100% of the wire section, wire lubrication, reduction in gas consumption, longer life of the nozzle and the use of a simple, efficient welding nozzle cleaner, which ensures considerable autonomy. The machine comes complete with the second airblower, chain density sensor, electronic speed regulator with brake, electronic wire stretcher, electronic darkening screen and led lamp.