The invention discloses an automatic precise pull and coverage locating device and method for an extremely-
thin metal bridge wire and belongs to the field of pre-
welding preparation of bridge wire type initiating
explosive device bridge wires. According to the method, initial positions of to-be-welded elements and the bridge wire are precisely located; the bridge wire is clamped through a
wire drawing mechanism under the guidance of
laser, so that oriented movement is achieved; finally, precise locating, over the to-be-welded elements, of the bridge wire is achieved, and pole needle
welding points, needing to be welded, on the surfaces of the multiple to-be-welded element which are mounted on a clamping plate are covered with the bridge wire; meanwhile, the bridge wire is fixed to preset
welding piles of the clamping plate for the to-be-welded elements through welding flux or
adhesive, so that positional fixation, above the multiple mounted to-be-welded elements, of the bridge wire isachieved; positional precision of the pole needle welding points on the multiple to-be-welded elements and the bridge wire meets the bridge wire welding requirement; the problem that after primary bridge wire welding formation of multiple to-be-welded elements is completed,
internal stress of a bridge wire is nonuniform is solved; and product welding conformance is improved.