The microprocessor controlled
welding system sets new standards for the application of Ultrasonics (US) to join
thermoplastic components. The microprocessor control-built into the operating unit add
enormous flexibility and increase in value to the well established standard welding press.
The welding process becomes accurately controllable and can be loged (eg., on a line
printer). Every alteration of machine data such as pressure, mains voltage, coupling,
component geometry etc., is recorded and depending upon the selected mode of operation -
can be influenced or simply displayed. The operational data is displayed alphanumerically
on a 20-digit VDU or can be had as hard copy output on a standard printer via a V 24/RS 232
interface. The operation is by means of a keyboard integrated in the front panel of the
operation unit.
The advent of the microprocessor control means for the first time the process of
ultrasonic welding has become clearer and more comprehensible to the user. Previously,
assumptions had to be made and test data was difficult to establish, the data is now
indicated for each weld and can be recorded, if required. Welding with this new machine
will lead to new know-how, which will assist in promoting the ultrasonic welding
technology further and in generalising it. Applications that in the past could hardly be
solved by ultrasonics are now becoming possible. The new "CONSTANT ENERGY"
and "DYNAMIC ULTRASONIC START" modes should result in more
consistent welds.
These positive characteristics are all achieved by means of micro-computer process control
which determines the instantaneous generator load and in millisecond digitizes, evaluates
and take over control of the machine.
All it takes to print out the energy pattern of the last weld in the table form or curve
is by simply a push of a key on a connected printer.
The machine is available with either 20 or 36 kHz frequency. There are generators with
outputs ranging from 30 W - 5 KW. In the 36 kHz option generators with a maximum output
upto 2000 W can be supplied.
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