The Latest Profiling Technologies
Contents 1. Objectives of the system 2. Typical arrangement 3. The profiling concept in details 4. Scanning & Optimization 5. PLC/Controls & HMI
Objective of the system Improve productivity of the sawmill Improve lumber recovery Reduce manufacturing costs This profiler upgrade has had a great impact on our operations, resulting in a 25% production increase combined with a cost reduction of $25/MFBM. We are truly impressed by how lumber flow in our mill has completely been transformed. - Miles Elliott Elliot Sawmilling Company
More profits How? More production Not limited by the edger anymore (up to 60% less boards going to the edger) Better wood flow, no more slabs, no more merry go round, most of the products from the gang are finished Less downtime caused by the edger limitation and other jams because of poor quality of boards The mills with those profilers have increased their production up to 25%!!! Better lumber recovery Profiling on a solid piece of wood like a cant at slower speed (600 FPM max) showed with time that edging accuracy is better than an edger going at 1200 FPM Better sawing quality, less torn grain and knot pull Increase of recovery up to 3% in some mills!!! Manufacturing costs reduction: More FBM/hour (+ 25%) More lumber for the same logs (+3%) Better boards quality No more sort station therefore less people Reduction of costs of $25/MFBM in recent projects!!!
Payback! What does it mean for your mill? Actual Production of the mill (MMFBM) 150 Production increase (%) 25 New Production (MMFBM) 187.5 Cost reduction per MFBM ($) 25 Annual gain ($) 4687500 Project costs including install ($) 3000000 Payback (months) 7.68
Typical arrangement Two Generations of Canter/Profiler 1- Standard Profilers: Applications: For Gangs fed by belt conveyor or by centering chain systems 2- Infeed Profilers Applications: For Gangs fed by a centering chain system and where space is limited. This unit replaces the existing curve saw infeed module
The Profiling Machine
Standard Profilers Before Perfect for gangs fed by belt conveyor or centering chain system Easy fit between the infeed conveyor and the curve sawing gang Curve sawing gangs don t need to be modified We replace the gang chipping heads by non driven side rolls After
Infeed profilers Before Fits perfectly on gangs with centering chain systems and where room is limited Perfect for compact arrangement, fits exactly in the same footprint Infeed of the curve sawing gang is replaced by a new module including feed press rolls and chipping heads After Gang chipping heads are replaced by non driven side rolls
Profilers Assembly Heavy-duty base frame and pivot/lift assembly Disc chipping heads for superb surface finish Disposable knives Independent profiling heads with infinite positioning possibilities Skew and slew movement of profilers during the sawing process for maximal side boards recovery
Highlights Compact design, 82 are needed to integrate it to an existing sawing line (infeed profiler) Designed to be installed in front of all curve saw and straight saw gangs Fits on existing sub-steel to minimize installation costs No shims are produced Servo hydraulic powered press rolls for a better control of cants (optional) for infeed and outfeed modules of gangs All profilers heads are interchangeable, only 1 knife Profiling heads are very close coupled to the saws for better sawing precision and curve sawing follow up No more pantograph arm motors Full skew and slew capability Full optimization of side boards (wane or no wane)
Profiling is also about Optimization & Control To maximize performance of your profiling system, you need a highly flexible and performant optimization software and PLC/Control system True-shape scanning for log/cant profile definition Optimization based on: Products configuration Value Size Defects restrictions Breakdown equipment capacities
Profiling is also about Scanning & Optimization High-Speed color cameras for higher value recovery: Decking Fencing Bug kill wood Stain detection Knots analysis Crack detection
Installation & Maintenance Easily retrofittable on existing curve sawing gangs (wiggle box) or straight sawing gangs Super heavy-duty design = Low maintenance costs Standard components of the industry, only top of the line parts Easy access to external and internal components
McGehee s Profiling Machine at Elliott Lumber
Summary Fits almost on any gang More production + 25% More recovery Better wood flow Sawing flexibility Sturdy design, low maintenance costs Less people All that added up means lower operating costs thus more profits!!