Method for Measuring and/or Regulating the Oscillation Amplitude of an Ultrasonic Transmitter, and an Ultrasonic Welding Device
AssigneeSchunk Ultraschalltechnik GmbH
InventorFrank Gassert
Life of this patent
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Abstract
The invention relates to a method for measuring and/or regulating the oscillation amplitude of an ultrasound oscillator of an ultrasound device. In order to be able to measure or regulate the oscillation amplitude of the ultrasound oscillator in a simple manner, it is proposed that a sensor capturing the oscillation amplitude be associated with at least one component element of the ultrasound oscillator.
Claims23
Method for measuring and/or regulating the oscillation amplitude of an ultrasound oscillator of an ultrasound device, comprising components producing or transmitting oscillations in the form of at least one converter and one sonotrode as well as, if applicable, a booster placed between the converter and the sonotrode, wherein in order to produce ultrasound oscillations the converter is connected with a control system circuit, such as a generator, via which a high frequency voltage or current for the purpose of producing the ultrasound oscillations is sent to the converter, characterized in that a sensor detecting the oscillation amplitudes is associated with at least one component element and actual signals corresponding to the oscillation amplitudes determined by the sensor are monitored an/or compared with the expected signals in the control system circuit or a measuring and monitoring device and that an output signal of the control circuit for the purpose of producing the ultrasound oscillations is varied as a function of the deviations occurring between the actual and expected signals.
Ultrasound welding device comprising component parts producing or transmitting oscillations in the form of at least one converter (12, 54) and one sonotrode (14) as well as, if applicable, a booster (16) placed between them, a backing electrode (ambos) (15) associated with the sonotrode, between which and the sonotrode compressible, weldable parts, such as wires, are placed, preferably in a compression chamber, where for the purpose of oscillation production an amplitude is applied to the converter via a control system (22) with a high frequency voltage or a high frequency current flows to it, characterized in that a sensor (26, 36, 38, 40, 42, 48) that captures the amplitude is a associated with at least one component element (12, 14, 16).
Dependencies are inferred from the claim text.