Kunststoffschweißtechnik
WIDOS
Einsteinstr. 5
Phone +49 (0) 71 52 99 39 - 0
W. Dommer Söhne GmbH D-71254 Ditzingen-Heimerdingen
Fax
+49 (0) 71 52 99 39 - 40
Website: http://www.widos.de
Email: [email protected]
19.09.11
Working Instructions WIDOS 5500 CNC 3.0
Page 17 of 78
3. Functional Description
The WIDOS
CNC
3.0
control unit performs a butt welding process with the plastic welding
machine WIDOS
5500
after entering the type of material, the pipe diameter and the pipe wall
thickness.
The welding processes are recorded and can be printed out in a short or a long version over
the parallel interface, or be saved on a PCMCIA card or be transmitted over the serial
interface e.g. onto a laptop by means of the program WICON.
The corresponding pipe data are entered manually over the operation field or alternatively
read with the barcode reader.
Welding
with the WIDOS
5500
CNC 3.0
works as follows:
The plastic pipes are clamped by means of the clamping devices (basic machine) and the pipe
ends are cut plane and parallel by means of the planer.
As soon as the pipes are plane and parallel and the misalignment is smaller than 0,1 X pipe
wall thickness you can start welding.
The heating element has to be cleaned and checked before insertion and the desired
temperature prescribed by the DVS must have been reached.
The clamped pipes drive under pressure in direction of the heating element and are heated up
under the defined adjustment pressure (
adjusting
), the duration of the adjustment is called
adjusting time
.
During the adjustment the
bead
prescribed by the DVS is performed.
After reaching the prescribed bead height, the control unit automatically switches into the
heating time
.
During the heating time the basic machine is in a pressureless state and the pipe ends are
heated.
After expiration of the heating time, the sledges move apart and the heating element should
be removed as fast as possible.
The time period between the removal of the heating element and the closing of the pipes is
called
change over time
.
After the maximum time prescribed by the DVS, the pipe ends are driven together and a
continuous welding pressure is built up.
The pipe then cools down under the prescribed welding pressure (
cooling time
).
After completion of the cooling time, the pressure on the pipe is automatically released and the
welded pipe can be unclamped.
The welding process is completed.
Heating element heats the pipes
up to welding temperature
Finished welded joint with
internal and external bead
