Spot welding device of electronic element

The invention discloses a spot welding device of an electronic element. The spot welding device comprises a welding table, and two vertical plates are symmetrically arranged on one side of a central line of the upper surface of the welding table; a ball screw is rotatably connected between centers of the two vertical plates; a stepping motor is arranged on the outer side of one vertical plate; anoutput shaft of the stepping motor and one end of the ball screw are welded; a horizontal moving part is arranged on the ball screw; the ball screw penetrates through the horizontal moving part; a screw sleeve is arranged in the horizontal moving part; the screw sleeve is connected to the ball screw in a sleeving manner; a rack is arranged above the central line of the upper surface of the weldingtable; the rack is connected with the top of the horizontal moving part through a connecting rack; the rack is of an L-shaped structure; and a welding machine is connected below a horizontal end of the rack through an electri