Siemens Aktiengesellschaft

Helmut Moll

Ralf D Krause

Josef Schindler

Kurt Marth

Wilfried Scherer

Gerd Wiegel

Peter Schoner

In particular to connect wires insulated with highly heat-resistant lacquer to terminal elements, the winding wire has hitherto been wrapped around a terminal element and connected mechanically and electrically at at least one connection point by the local application of energy with the removal of the insulation. During winding around the terminal element, the winding end is held under pretension and simultaneously vibrations, in particular in the ultrasonic region, are coupled into the winding wire/terminal element system at the connection point to apply energy. Preferably, the vibrations are coupled into the wire outside the connection point. As a result of the fact that the vibrations propagate via the tensioned wire and bring about a relative movement between winding material and terminal element, an insulating layer can be broken up at least partially and the electrical connection to the terminal element is made by ultrasonic welding. For this purpose, an ultrasonic horn is assigned to the winding nozzle (10) for the transmission of, in particular, ultrasonic vibrations to the winding wire (5), preferably as part of the winding nozzle (10).

Method and apparatus for connecting winding materials to terminal

Tool configuration for ultrasonic welding

A method for bonding a lacquer insulated wire to a metallic support is disclosed. The method is carried out in two steps: First, the wire is exposed to ultrasonic energy so that the lacquer is broken up and the wire is deformed in a certain area and welded to the support. Then the entire area of deformation is enclosed with a thixotropic adhesive. In preferred embodiments, the method is used for bonding the winding wire of a HF-inductor coil with contact elements shaped as wires or lugs.

Method for bonding an insulated wire element on a contact

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Erlangen, Germany

Helmut Moll