Overlay

Ultrasonic components

An ultrasonic welding system consists of various components. Responsible for generation of vibration is the ultrasonic generator. The stack, comprising the converter, booster, and sonotrode, transmits the vibration and introduces it into the parts.The decisive factors for high quality sealing are the appropriate profiles of the weld surfaces on the sonotrode and the anvil. With rigid parts, the fixture holds the applications in position. All components are manufactured as solid and robust parts, which is the result of decades of practical experience and continuous development.

Ultrasonic sonotrodes

Ultrasonic sonotrodes

The optimum oscillation behavior of the ultrasonic sonotrodes is determined by means of FEM (Finite Element Method) calculation. Highest precision requirements in terms of CAD/CAM calculation algorithms guarantee precise 3D contours for sonotrode manufacturing. Measuring and documentation of the amplitude distribution is performed at the vibrating sonotrode using state-of-the-art laser measurement technology. Special surface finishings result in even longer service life spans of the ultrasonic sonotrodes.

Ultrasonic converter

Ultrasonic converter

Depending on production environment conditions, ultrasonic converters are available with protection ratings of IP50, IP65, and IP67. For rotating operation, a series of ultrasonic converters with integrated HF connection for rotary couplers has been developed. What all ultrasonic converters have in common is their central assembly with solid piezoceramic four-disk technology. The rigid decoupling principle allows for axial and transverse forces. Special manufacturing processes ensure extremely long service life at constant output amplitude.

Ultrasonic booster

Ultrasonic booster

For frequency values of 20, 30, and 35 kHz ultrasonic boosters with different gain ratios (transformation) are available. All ultrasonic boosters are made of high-quality titanium. Depending on the required demands, they are installed using rigid or flexible support rings.

Fixtures

Fixtures

Herrmann Ultraschall has long-term experience in the field of fixture design. In order to obtain good weld results, a fixture has to be perfectly adapted to the plastic component about to be welded. Starting with selection of the best suitable material, which ensures damage-free holding of the component, through to special fixing, clamping, or sensor functions, fixtures are customized and specifically designed to meet the respective application requirements.

Anvils

Anvils

In interaction with the sonotrode, the anvil produces and shapes the joint and thus is one of the core components of the ultrasonic sealing process. Sealing of films requires focusing of the energy by means of the tooling profile, which is mostly mounted to the anvil. Highest rigidity and plane parallelism ensure best joint quality. Anvil profiles are essential for the quality of the weld result and are produced to customer requirements and adapted to respective applications.