Ultrasonic welding device with opposing welding and side surfaces defining a compression chamber, and a tool for such an ultrasonic welding device

Abstract

Ultrasonic welding device for welding metallic conductors, such as stranded wires, in particular for producing a junction point, with a compression chamber adjustable in height and width, which has two working surfaces (36, 38) delimiting the compression chamber on opposite sides and two side delimiting surfaces (44, 46) extending transversely to the working surfaces and adjustable relative to one another, wherein one working surface is a section of a sonotrode (16) of the ultrasonic welding device capable of ultrasonically oscillating and the opposite working surface is a section of a counter electrode (32), and the working surfaces are structured, characterized by that at least one of the side boundary surfaces (44, 46) of the compression chamber (18) is structured at least in some areas, and that the counter electrode (32) extends from a carrier (34) which runs along a side surface (106) of the sonotrode (16) and perpendicular or approximately perpendicular to the working surface (36) of the sonotrode, the side of which facing the compression chamber (18) is a side boundary surface (46) or from which a plate-shaped element having the side boundary surface on the outside extends, and that the side surface of the sonotrode has a geometry which complements the structure of the side boundary surface.

Description

Concerning the European patent EP 1 853 404, the 7th Senat (Nonness Sat) of the federal republic of Germany has recognized for Legal due to the oral negotiation of December 16, 2024: 1 The European patent 1 853 404 is not explained as acting on the Highite Field of the Federal Republic of Germany as it goes beyond claims 1 to 14 of the Auxiliary Application 10:

Claims

Ultrasonic welding device for welding metallic conductors, such as strands, in particular for producing a junction point, having a compaction space which can be adjusted in height and width and has two working surfaces (36, 38) which delimit the compaction space on opposite sides and two side delimiting surfaces (44, 46) which can be adjusted relative to one another and run transversely to the working surfaces, wherein a working surface is a portion of a sonotrode (16) of the ultrasonic welding device which can be set in ultrasonic vibration and the opposite working surface is a portion of a counterelectrode (32) and the working surfaces are structured, characterized in that at least one of the side delimiting surfaces (44, 46) of the compaction space (18) is structured at least in regions, and in that the counterelectrode (32) originates from a carrier (34) which runs along a side surface (106) of the sonotrode (16) and perpendicularly or approximately perpendicularly to the working surface (36) of the sonotrode, its side facing the compaction chamber (18) is a side limiting surface (46) or from which a plate-shaped element having the side limiting surface on the outside extends, and that the side surface of the sonotrode has a geometry complementary to the structure of the side limiting surface.The ultrasonic welding apparatus of claim 1, characterized in that each of the side boundary surfaces (44, 46) is structured.Ultrasonic welding device according to claim 1 or 2, characterised in that the structuring consists of trough-shaped or trench-shaped depressions (58, 60, 62, 64, 74, 76, 92, 94, 82, 84, 86, 88, 90) and / or rib-like elevations or projections (66, 68, 70, 72, 92, 94, 100, 108, 110), which run parallel or approximately parallel to one another and perpendicular or approximately perpendicular to the longitudinal axis (28) of the compaction space (18).Ultrasonic welding device according to one of the preceding claims, characterized in that the structure of the side boundary surface (46) is formed by depressions (58, 60, 62, 64, 74, 76, 82, 84, 86, 88, 90) which are set back with respect to the plane spanned by the side boundary surface.Ultrasonic welding device according to one of the preceding claims, characterized in that the structure of the side limiting surface (46) is formed by projections (66, 68, 70, 72, 92, 94, 100, 108, 110) protruding above the plane spanned by the side limiting surface.Ultrasonic welding device according to one of the preceding claims, characterized in that the structure of the side boundary surface (44, 46) is formed by elevations (66, 68, 70, 72, 92, 94, 100, 108, 110) and / or depressions (58, 60, 64, 74, 76, 82, 84, 86, 88, 90) in at least one region (A, B) of the side boundary surface (44, 46), wherein the elevations or depressions extend in particular transversely, preferably perpendicularly, to the longitudinal axis (28) of the compaction space (18).Ultrasonic welding device according to one of the preceding claims, characterized in that the elevations (66, 68, 70, 72, 92, 94, 100, 108, 110) and / or depressions (58, 60, 64, 74, 76, 82, 84, 86, 88, 90) have a cross section preferably in the form of a triangle, a trapezoid or a circular section.Ultrasonic welding device according to one of the preceding claims, characterized in that the structure formed by the elevations and / or depressions (74, 76) forms a wave geometry in section.Ultrasonic welding device according to any one of claims 1 to 8, characterized in that the structure extends uniformly over the side boundary surface (46, 48).Ultrasonic welding device according to one of Claims 1 to 8, characterized in that the side delimiting surface (44, 46) is structured in its central region (B) and is of planar design outside the central region.Ultrasonic welding device according to claim 6, characterised in that the elevations (66, 68, 70, 72, 108, 110) and / or depressions (58, 60, 62, 64, 74, 76, 82, 84, 86, 90) are at the same or approximately the same distance from one another.Ultrasonic welding device according to claim 6, characterized in that the elevations and / or depressions (82, 84) vary along the side boundary surface (46).Ultrasonic welding device according to claim 6, characterised in that the elevations and / or depressions (92, 94) form a saw-tooth-like structure.Ultrasonic welding device according to claim 13, characterised in that the elevations (92, 94) having a saw-tooth-like geometry are arranged in groups in such a way that their edges (96, 98) face each other.