Zipper chain combination method and combination mechanism

The invention provides a zipper chain combination method, which can reduce the manufacturing cost of a zipper. The method comprises: a step A of detecting a slider on a second zipper stringer in the process of moving a zipper chain to the downstream of a conveying direction; a step B of converting the movement of the zipper chain from downstream in the conveying direction to upstream in the conveying direction according to the detection of the slider; a step C in which a slider on a second fastener stringer is stopped at a predetermined combination position; a step D in which a seat bar-containing receptacle body of the second fastener stringer is brought into contact with the slider located at the combination position; a step E in which a first fastener stringer is pulled closer from the upstream side of the combination position, and a plunger is guided to a position facing a shoulder opening on the non-one-side penetration side of the slider located at the combination position; and a step F in which the mov