System and method for bending wood strips
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United States of America Patent
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Dec 25, 2018
Grant Date -
Apr 21, 2016
app pub date -
Oct 20, 2015
filing date -
Oct 20, 2014
priority date (Note) -
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Abstract
A system and method for automated bending of wood strips. The system includes an preprogrammed automated robot arm that is fitted with a gripper for grasping and manipulating the wood board around a hot mandrel in order to bend the wood into intricate bent shapes. The wood strips are first soaked in water so that they pliable to bend around the mandrel. The heated mandrel plasticizes the lignin to allow the fibers to reorient in the wet wood strips thus fixing or locking the wood in the bent shape. The grippers are preferably pneumatic grippers formed from two plates that move towards each other to grasp or clamp onto the wood strip. A friction plate urges the wood strips against the heated mandrel to provide consistent and constant contact between the wood strip and the surface of the hated mandrel.
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