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September 2024 #16302 Page #154
The Last Word Material Handling Bunk-to-Table Joe Kannapell, P.E.
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dding the last links to the chain of material handling – bunk-to-saw and saw-to-table – is intricately executed by Hundegger at Sunpro’s major expansion in St. George, Utah – and it’s cool! Yes, here in the northeastern-most part of the Mojave Desert, the Clyde Companies have built a facility worth working in. This plant has joined the burgeoning ranks of the wider and larger truss plants that I began discussing in The Last Word last month, “The Rise, Fall, and Rise of Big Truss Plants.” While that article focuses on saw-to-table material handling, this one looks more closely at the entire bunk-to-table handling process. Hundegger has refashioned its heavy timber handling technology to perform the easier task of 2x lumber processing, centered on its TURBO-Drive saw. The saw’s infeed is synchronized with Acer’s RangerRS and the outfeed with the Hundegger delivery system. On both ends, the implementation is feature-rich, taking into account the capability to assemble and cut a stack of four boards, while separating them to feed an assembly line truss-by-truss. And, in the process, the workflow and optimization is controlled by Hundegger’s CAMBIUM® CCM software, which also monitors the inventory of Acer’s lumber carts. Sunpro takes advantage of RangerRS’s full range of options to feed the Hundegger most efficiently. On two of their three lines, the Hundegger is positioned in the center of the array of lumber bunks (Optional Center Feed) shortening delivery time to the saw. All three lines have two independent picking heads (Optional Dual Delivery) which also expedite delivery time. And upon arrival at the saw infeed, boards are crowned (Standard Crown Orientation), and up to four boards may be stacked (Optional Stacking). On the exit end of the Hundegger is an ingenious unstacking and separating table, that divides cut parts truss by truss, and automatically sends them down a conveyor to an infeed separating conveyor. These extensive features ensure that the Hundegger is operating with maximum efficiency.
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