Abstract: It is suggested to provide a device (1) for connecting a cable to an electrical connector (15). The device (1) comprises a welding nest (16) and a connector advancing mechanism for feeding the electrical connector (15) to the welding nest (16). Preferably the welding nest is an ultrasonic welding nest. The connector advancing mechanism comprises a separation unit (2), a feeding mechanism (3) and a transfer mechanism (4). The separation unit (2) is a separation unit for separating at least one connector (15) from a strip (21) to which the connector (15) is attached. The at least one connector (15) is preferably separated from the strip (21) with a cutting die (17). The feeding mechanism (3) is a feeding mechanism for feeding the connector (15) to the separation unit (2). The transfer mechanism (4) is a transfer mechanism for transferring the connector (15) from the separation unit (2) to the welding nest (16).

Abstract: Systems for ultrasonically welding described herein include a sonotrode for delivering ultrasonic vibrations to two or more plastic sheets, so as to form a weld between them. The sonotrode and the plastic sheets are arranged such that the ultrasonic vibrations delivered by the sonotrode travel along a path that is oriented at an angle ? with respect to a tangent to the surface being welded, wherein the angle ? is less than 90 degrees. Methods for ultrasonically welding described herein include providing two or more plastic sheets to be welded together and delivering ultrasonic vibrations to form a weld between them, such that the ultrasonic vibrations travel along a path that is oriented at an angle ? with respect to a tangent to the surface being welded, wherein the angle ? is less than 90 degrees.