Virutex EB140PLC Premilling Manual De Instrucciones página 26

C
(Figure 3.1)
(Figure 3.2)
26 - EB140PLC Premilling / Annex operating instructions
D
A
B
3. OPERATION OF THE TUPI UNIT OR PANEL INPUT MI-
LLING UNIT
The machine is factory-set to automatically mill
the board at the entrance onto the edgebander.
If for any reason the machine does not correctly
carry out the sequence of movements descri-
bed below, it must be repaired exclusively by an
authorized technical service.
The pre-milling unit performs a milling of the board that gi-
ves it a high quality finishing as it eliminates any damage or
cracks that the panel may have due to its handling before
proceeding to its edgebanding. The end result is an edgeban-
ding of excellent quality both aesthetically and functionally.
To achieve this, it incorporates 2 milling cutters with 2.5 mm
resharpenable PCD inserts. Their appropriate configuration
and cutting inclinations give in result a clean, continuous
edge without cracks in the lower and upper melamine layers.
Furthermore, and in combination with the reciprocating mo-
vement and the directions of rotation of the milling cutters
of the pre-milling unit, it's guaranteed that the edge will not
detach from the opposite faces previously edgebanded.
Finally, the milling of the panel prepares the surface for
highly effective gluing.
The sequence of work is as follows:
When the board enters the working ta-
ble, it activates the lever A (Fig. 3.1) of
the first operating microswitch, which
activates the drag feeder B (Fig. 3.2) and
starts the rotation of the cutters C (Fig.
3.1) of the pre-milling unit. At this time
the board, guided by the support rule D
(Fig. 3.1), will enter the pre-milling unit
where the first cutter E (Fig. 3.3-3.4), in
a counterclockwise direction of rotation,
will rectify the thickness of the panel.