Cigarette filter stick packaging paper tape center line glue coating device and method

The invention provides a cigarette filter stick packaging paper tape center line glue coating device and a method. The device comprises a glue supply mechanism, a packaging paper tape supply mechanism and a gluing mechanism, and is characterized in that the gluing mechanism comprises a first mold, a second mold and a power mechanism for driving the first mold and the second mold to synchronously swing, wherein the the working surface of the first mold is a horizontal plane, and a glue inlet groove with a glue inlet, a glue storage groove and glue outlet grooves with glue outlets are formed in the working surface; the working surface of the second mold is a horizontal plane; the first mold and the second mold are tightly connected into a whole through the opposite working surfaces, and the glue inlet groove with the glue inlet, the glue storage groove and the glue outlet grooves with the glue outlets in the first mold form glue supply channels which communicate with one another; and the first mold and the seco