Abstract: An ultrasonic tying tool for installation of a tape about a bundle of elongate articles. The tool includes an ultrasonic horn wherein the welding tip is moveable between a first position for welding of a tape to secure the tensioned loop about the plurality of articles and a second position wherein the welding tip is translated a distance from the first position to effect cutting of the tensioned loop from the stock of tape and to tack weld the loose cut end to the underlying tape of the loop to eliminate any protruding sharp edges. The tool additionally includes a belt drive mechanism for advancing the tape to the jaw assembly and for tensioning the tape following looping of the tape about the outside.

Abstract: A tie gun for tying elongated bundles with a polymeric material tape loop, the loop having overlapped tape lengths, the overlapped material being welded with an ultra sonic horn, this horn embodying a horn tip end which with a clamp, and an anvil arrangement holds the loop in such way that a tape stock section just upstream of the weldment is weakened by horn operation disrupting at least some of the molecular orientation in the material so that the stock can be separated from the loop with an upstream directed pulling force applied to the tape stock resulting in a severance that leaves no objectionable protuberance or tab at the weldment. The tie gun also includes a quick release for freeing a tape build up in the gun incident a tape feed jam. A face of the clamp, face surfaces of the anvils and the horn tip end define a funnel envelope to facilitate tape stock feed to tape loop forming jaws on the gun at the outset of a tying cycle.