WICKERT Special New Tecnologies Mikroengineering

special
New Technologies/Microengineering
Hot-stamping Plant for Microstructures
The hot-stamping plant of the Type Stamp Press MS1 has been conceived for hot-stamping of microstructures into plastics. The forming
of plastics by the hot-stamping process has proved its merits in microengineering and offers contrary to injection moulding a reduced
material flow of the material during shaping, while simultaneous considerably less material mass has to be transported. During injection
moulding plastizised material has to be injected into the mould while hot-stamping presses the microstructurized shape in plasticised
material or plastic foils.
special: New Technologies/Microengineering
Essential for hot-stamping of microstructures
are punches (mould elements) with
super-fine structures and highly precise
stamping machines. High-quality microcomponents
can only be produced if
these conditions are given.
Extreme guidance accuracy
The stamping machine offers an extraordinary
guidance accuracy of the lockingstamping
system as well as a precise
servo-electric or servo-hydraulic drive.
A force-travel control for the servo-axes
warrants conformity with the required
parameters during the stamping process.
The axes can be moved with the
most minute space of approximately 1 m
during the stamping process. Heatingcooling
cycles for the bottom and top
stamping process. Heating-cooling cycles
for the bottom and top stamping tools
enable a most sensitive temperature control
during the shaping.
A special feature ensures the shaping of
structures under the exclusion of trapped
air. Additional ejectors of the machine
provide for a gentle removal of workpieces.
This stamping plant has proved it
excellent utility on many occasions and
can be tailored to a special requirements
or modified to meet specified tasks.
Wickert Maschinenbau GmbH · Wollmesheimer Höhe 2 · D-76829 Landau/Pfalz · Tel. ++49 (0) 63 41 -93 43 - 0 · info@wickert-presstech.de · www.wickert-presstech.de

Wickert Laboratory Press as Tool for Fuel Cell Development
The Daimler-Benz AG is ceaselessly engaged in the exploration of new vehicle drives. One of the major target in this field is the fuel cell
technology. In the estimation of experts the first of these fuel cell powered vehicle will appear in five to ten years on the market, such
fuel cells for motor vehicles will be based on plastics foils of a precisely defined wall thickness of but a few millimetres.
Specifically conceived for the production
of these plastic elements is a fully
hydraulic Wickert laboratory press with
precision hot plates. A ramp function
being provided for the heat plate temperatures
and the pressforce. The press
with a pressforce of 3 to 360 kN and a
pressing surface of 400 x 400 mm is outstanding
for the ingenious solution of the
heating and cooling system. Resorted are
precision hot plates ensuring a uniform
temperature distribution over the entire
surface. A temperature tolerance of max.
+/- 1°C can by electrical heating be provided,
thus ensuring the workpiece being
uniformly heated over its entire surface.
Highest demand is claimed for the planeparallelity
of the workpieces. Flexibility of
the press frame and pressure plates could
be optimated by resorting to the finite
element system. The result: The Wickert
Laboratory Presses achieve a deviation
of plane parallelity of less than 0.1 mm
measured between the heat plates as
full power and thus meet the highest
demands.
This high demand for precision applies
also for the pressure initiation and halting.
During hot pressing and also during
the cooling procedure +1 % shall not be
exceeded over the entire pressing range.
For stabilization of the pressed stock and
the subsequent unloading. Workpieces
have to be cooled after hot pressing.
Commonly heat plates are for this purpose
cooled with water and reheated for
the next cycle. At a stamp temperature
of approx. 170°C and a
removal temperature
of approx. 40°C energy
is at a considerable
degree being wasted
during this process. The
energy waste could be
curtailed for Wickert
Laboratory Presses.
In these presses the
moulded parts are in
a hot condition placed
on a tray after opening
of the press automatically.
Inserted from the
rear are separated cooling
plates covering the
moulded part from top
and bottom. During
closing of the press for
cooling of the workpiece
the heat plate is
special: New Technologies/Microengineering
thermally separated from the cooling plate
by isolating plates. Heating plates are
thus only slightly cooled down and the
energy loss is, compared to those of conventional
cooling procedures, drastically
reduced. Cooling plates being inserted
and removed by a mechanical system.
Wickert Maschinenbau GmbH · Wollmesheimer Höhe 2 · D-76829 Landau/Pfalz · Tel. ++49 (0) 63 41 -93 43 - 0 · info@wickert-presstech.de · www.wickert-presstech.de