Automated lumber retrieval and delivery
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United States of America Patent
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May 7, 2019
Grant Date -
N/A
app pub date -
Dec 19, 2014
filing date -
Dec 19, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An automated lumber handling system laser-scans the top profile of multiple stacks of lumber, each of which contain boards of a unique size. Based on the scanned profiles, the system determines the order in which individual boards from a chosen stack should be transferred to a numerically controlled saw. The saw cuts the boards to proper size and in the proper sequence to facilitate orderly assembly of a roof truss or prefabricated wall. In some examples, the system lifts individual boards by driving two retractable screws, or some other piercing tool, down into the upward facing surface of the board. A track mounted cantilever, holding the screws and a laser unit, translates over the lumber stacks to retrieve and deliver individual boards and, while doing so, the laser repeatedly scans the stacked lumber profiles on-the-fly to continuously update the profiles. The open cantilever design facilitates replenishing the stacks of lumber.
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