Schunk Sonosystems Gmbh

Koninklijke Philips Corporation N.V.

Kuster Holding Gmbh

Stefan Mueller

Rainer Wagenbach

Norbert Kunze

Horst H Rumpf

Christian Hopf

Cornelius Wouters

Waldemar Werner

Robert Marchant

Andreas Schmidt

The invention relates to a method for positioning weldments () in an ultrasonic welding device () and to an ultrasonic welding device comprising a sonotrode (), to which ultrasonic vibrations are applied and which emits longitudinal vibrations, and an anvil (), a weldment accommodation () being formed between a work surface () of the sonotrode () and an opposing surface () of the anvil (), a change in position &#x394;x of a positioning device () defining weld position P of the weldment () being captured in the longitudinal direction () of the sonotrode () by means of a position sensor, the application of vibrations to the sonotrode () being changed such depending on the change in position &#x394;x that a change in amplitude &#x394;y is performed according to an amplitude characteristic curve of the sonotrode ().

Method for positioning weld metal in an ultrasonic welding device and ultrasonic welding device

The invention relates to an ultrasonic welding device comprising a sonotrode () transmitting ultrasonic vibrations and an anvil () disposed on an anvil carrier (), the anvil () being disposed on the anvil carrier () in an exchangeable manner so that an mounting surface () of the anvil () rests against a support surface () of the anvil carrier () by means of a normal force exerted by a pretensioning device, the mounting surface () of the anvil () having a surface hardness greater than the surface hardness of the support surface () of the anvil carrier (), the mounting surface () having a surface structure at least in the area of a partial surface, and the mounting surface () having a surface roughness of R/R&#x2265;2 at least in the area of the partial surface.

Ultrasonic welding device

An ultrasonic welding device includes a sonotrode emitting longitudinal vibrations in the direction of a longitudinal sonotrode axis which comprises a work surface on a sonotrode head and an anvil. A weldment accommodation for a weld deposit is between the work surface 'p' and a counterface of the anvil. The ultrasonic welding device includes a stop device for defining the welding position with respect to the work surface. The counterface is disposed at an inclination &#x3b1; towards the longitudinal sonotrode axis such that when the counterface is inclined downward towards a vibration node adjacent to the work surface, distance a between the work surface and the counterface continuously increases towards the vibration node, and when the counterface is inclined upward towards a vibration node adjacent to the work surface distance a is essentially constant.

The invention relates to electrically switchable motor vehicle glazing, such as a side or rear window pane of a motor vehicle, wherein at least one optical property can be changed by feeding an electrical signal through a line arranged on a window-pane holder of the motor-vehicle glazing, wherein an open-loop or closed-loop control unit for feeding the electrical signal is provided in a housing, which is arranged in a stationary manner in relation to a motor-vehicle body.

Electrically switchable motor-vehicle glazing

The invention relates to a device in a deck for playing information discs ( ), which preferably have been provided or can be provided with digital information, the information disc ( ) being rotated, in the operating condition, about its center by a drive motor ( ) and magnetically cooperating material parts ( ) being present, which are offset radially with respect to the axis of rotation ( ) and in the direction thereof parallel with respect to one another and of which one part ( ) is disposed on the base plate ( ) which carries the motor ( ) and of which the other part ( ) is disposed on the disc support ( ) which is moved by the motor shaft ( ), one of the material parts ( ) being a ring-shaped permanent magnet, at least one of the two magnetically cooperating material parts ( ) being arranged eccentrically with respect to the axis of rotation ( ) and both material parts ( ) are ring-shaped, the directions of the lines of field not being changed during rotation.

Growing community of inventors

Wetzlar, Germany

Stefan Mueller