One-side spot welding device

Abstract

A one-side spot welding device includes a base which is formed in a cylindrical shape, a welding head and a welding tip. The base has a push rod operable in an upward and a downward direction with respect to the base and has a slide groove in an upper inner circumferential surface thereof. The welding head is installed at an upper side of the base so as to be slidable in a radial direction and equally divided in a circumferential direction so as to include a plurality of unit welding heads in close contact with one another. The unit welding heads are capable of being spaced apart from one another in the radial direction by the push rod. The welding tip is formed in a cylindrical shape so as to be configured at an outer circumference of the base, operates in an upward and a downward direction and is capable of applying welding electric current to the welding head.

Dependencies are inferred from the claim text.