2017 International Forest Industries Magazines IFI Aug Sept 2017 v2 | Page 27

EDGERS – HEINOLA
LUMBER PROCESSING
Heinola automation
optimizes the volume to be
connected with the quality
scanning results
when edging the board.
Boards usually arrive at the
edging system from the sawline
wane upwards. If the board
reaches the measuring point wane
downwards, the BoardMaster will
measure its quality on the basis of
its underside (i.e. the side now on
top, and send turning information
to the control automation system).
If the grading scanner results
are not usable for any reason, the
boards are optimized and edged
using the profile scanner data, as
previously. Turning arms have been
added to the cassette conveyor,
after the quality grader, so that
the data received from the quality
grader can be used to ensure the
boards are the right way up for
edging.
The optimization result given
by the quality grader may also
be a decision to reject the piece,
whereby it will be automatically
dropped through the rejection
hatch before edging takes place.
“The new Heinola automation
HALCO AD:Layout 3 3/8/10
system also measures each
board’s profile lengthwise, as
previously, but now the FinScan
optimization data is placed over
the scanned profile, both sets of
data are combined, and the best
possible position for the end result
is calculated, taking into account
yield value,” Heinola stated.
The quality grader is equipped
17:22 Page 1
Optimise your
production plan...
with three additional thickness
scanners to improve wane
identification.
The final and best possible
method to achieve the desired
sawing result is to do the sawing
with the help of Heinola’s patented
skew-cutting technology. With
this solution, Heinola changes
the position of the sawblades
according to optimization data and
keeps the sideboard centred and
stabile during the cutting process.
“The first unit has been in use
by a Finnish customer since last
summer and the results have been
very promising, with a significant
improvement in the yield of side
boards achieved,” Heinola stated.
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International Forest Industries | AUGUST / SEPTEMBER 2017 25