SHIFTING & SORTING
the end of the shift? How can we do more with a finite number of resources? How do we give our customers more of what they want, and less of what they don't want within acceptable grade rules? Fortunately USNR has the
expertise to provide solutions for these issues. With thousands of sorter installations worldwide, USNR's lineage boasts brands such as Newnes, Hemco, CSMI, LSI, Coe, Irvington Moore and others. USNR has many decades of experience solving a multitude of lumber sorting problems. USNR's Newnes brand offered the first vertical bin sorter to lumber producers, and today features the widest array of advanced technology solutions. USNR's sorter tops include J-
bar, pusher lug and drag chain; sorter bottoms include vertical bin, slant bin, slant tray, horizontal tray and sling. The company designs for speeds up to 240 lugs/minute. High speed bin sorter options comprise: • Bin chokes • Bin baffles/dividers • Bin kickers (new) • Stub bin walls
• Fully sheeted bins • Live bin walls • Bin safety lock cables (LNS) • Sweeper chains below sorter • Auto bin dumping and package tracking.
WinTally USNR’s WinTally is the leading contender in sorter management systems, the company stated. WinTally V7 operates on the Windows XP and Windows 7 platforms, with SQL Server 2008 R2 Express database, Crystal 10 reporting and Ethernet IP. Standardised code offers excellent support and upgradeability. WinTally is capable of a multitude of complex sorting configurations. The following are a few of the key features: 1. Bin dispersion: allows the tally to disperse products throughout a bin. For example, the system can create packages with an even dispersion of low grade ‘#2’ boards within a package of higher grade ‘#2’.
2. Product mixing: allows a mix of products within a bin. For example, a customer may want to offer a deal to end users where they can purchase packs
containing a certain percentage of ‘#1’ boards in a ‘#2’ pack, or to mix packs by moisture content or species.
3. Bin throttle: limits the number of boards that can be directed to a single bin or area so as not to overwhelm the bin or pull chain area while allowing mill personnel the ability to maintain control of the process.
4. Jag pack management: a jag is a bin that is not completely filled, and typically occurs at the end of a shift. If a different product will be run in the next shift, the bins must be cleared out first, causing production loss on re-entry when that run is used again. This feature minimises the number of jags remaining at the end of a shift by shutting off products at the optimiser once those bins are filled. The optimiser must then re-optimise these products into a different grade, minimising jags while maintaining the highest value combinations.
Optimiser integration Integration with USNR's Lineal High Grader (LHG) in the planer mill and trimmer optimiser in the sawmill ups the ante for the
LT-2 is probably the best log rotator on the market – Thomas Wästlund, AriVislanda
optimiser no longer makes that product. Instead, the optimiser will select the next most valuable solution. This could be a ‘cut-n- two’ or single board solution depending on the value of currently active products (based on mill inputs) and the physical characteristics of the piece. When WinTally is integrated with another vendors' optimiser, the products must be entered at both the optimiser and at the WinTally. As an example, product mixing can work with integration with another vendor's optimiser. In that case the product is not ‘turned off’ at the optimiser but can still be mixed throughout specified bins.
AriVislanda’s Log rotation accuracy: 1S=5° i.e. better than ±1 minute on an analogous clock
WinTally, however is not essential. USNR has successfully integrated WinTally with other vendors' optimisers. When WinTally is integrated with the LHG the products are entered only once in the system, at the optimiser. The optimiser's board solution is relayed to the WinTally system for sorting. Further, if a mill is cutting to order, once the order is filled the
34 International Forest Industries | OCTOBER/NOVEMBER 2011
“LT-2 is probably the best log rotator on the market,” AriVislanda’s Thomas Wästlund told IFI. Three spiked rollers are each controlled by a patented servo hydraulic servo system and mounted in a frame that can be adjusted in two directions. The rollers grip the log and turn it to the position determined by the scanning and optimising system. Before the log is gripped, the rollers are positioned to catch the top to avoid unintentional movement. The log turning accuracy of the machine is guaranteed within 1S=5°. This corresponds to +/- 1 minute on a clock. IFI
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