the board for width, length and side
bend. They then use that information
to position the fence, and the moving
blades if so equipped, for the best yield
for that cut bill and arbor configuration.
Most systems also allow you to run in automatic mode, with no operator needed
to make cut decisions, eliminating
more labor from the operation. Some
camera systems will also see defects in
the lumber and use that information to
optimize where the board will be cut.
Besides the infeed optimizing
conveyor there are other labor-saving
systems that can be added to the rough
mill. A tilt hoist with an unscrambler
or automatic vacuum lift unstacker
combined with bunk conveyors can be
designed so that the ripsaw has a constant flow of material without waiting
for forklifts to bring material to the saw.
The vacuum lift has the advantage of a
reduced footprint over a traditional tilt
hoist system, but both are effective.
Material handling behind the ripsaw
is also important for an efficient rough
mill layout. By using an outfeed belt
conveyor with a pinch roll, material can
be transferred from the ripsaw onto a
sort chain conveyor. This allows workers to sort the rip strips into carts to
facilitate transfer to the next operation.
If edgings are left on the conveyor they
can be transported to the end of the
sort chain and dropped into a conveyor
to the grinder or hog for disposal.
Every rough mill is different because
of the constraints of the building and
the space allocated for the operation.
Wood products manufacturers should
Source: John Branch is the vice president of
ask their vendors for help laying out an
efficient design plan for their rough
mill. And don’t be afraid to look at new
technology as the wood industry can’t
afford to ignore new ways of making
its business more efficient. The next
generation won’t be able to compete
if they must spend several years simply
catching up to the rest of the field.
sales for Mereen-Johnson LLC. For information
call 888-4MJSaws or visit Mereen-Johnson.com.
704.799.0100 • www.weinigusa.com
WEINIG Rip Saws take you where you need to go.
In the Driver’s Seat
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