Operating instructions

8.3 Horn

Any kind of change to the metallic body of the

horn influences the oscillating characteristics and there-

fore none should be made without consulting the

manufacturer!

The horn transmits the ultra sonic energy to the

object to be welded in form of intense oscillations

created by the converter.

Work pieces come in various shapes and the horns

must be adapted to the shapes as required. The

horn is an acoustic body tuned to the frequency of

resonance.

That sets limits to the shapes it may take. The

geometric shape of the horn should be kept as

simple as possible.

In addition to the geometric shapes, other important

factors are to be considered:

The horn has to be tuned to the frequencies of

resonance according to the table.

frequency of resonance Tolerace

35 kHz ±50 Hz +150 / -250 Hz

To let the horn oscillate correctly, it should be

shaped to move in the most axial direction to

the surface to be welded, with the aim of

transmitting the most pulses from the frontal area

of the horn onto the object to be welded.

The amplitude of the horn is determined by the

shape of the horn.

Most important in manufacturing the horn is:

• Extensive knowledge about the load factors of

the various materials.