Cylindrical spherical butt welding nozzle suitable for lead-acid battery

The utility model relates to a cylindrical spherical butt welding nozzle suitable for a lead-acid battery. Belongs to the technical field of lead-acid storage battery manufacturing. The butt welding nozzle mainly solves the problems that an existing butt welding nozzle in a flat-head trapezoid cylindrical shape is difficult in welding concentricity centering, not full in butt welding, not enough in welding strength, potential quality hazards exist, and a battery possibly fails in advance. The device is mainly characterized by comprising a trapezoidal cylindrical boss, a large port of the trapezoidal cylindrical boss is connected with a spherical boss main body, and a small port of the trapezoidal cylindrical boss is connected with a sharp nozzle body. The through-wall welding device has the advantages of being simple in structure, convenient to use and beneficial to improving the welding strength of through-wall welding and improving the welding quality, and is mainly used for through-wall welding of welding