Abstract: A method of positioning lumber in a given orientation in a handling apparatus having a base frame, a longitudinal transport assembly, and at least two gripper arm support platforms with a pair of gripper arms positioned on each of the support platforms. A work piece is gripped with the gripper arms without the work piece engaging the longitudinal transport assembly. The gripper arms are adjusted on at least one of the support platforms in a direction generally perpendicular to the longitudinal transport assembly in order to selectively position the work piece. The work piece is then brought into engagement with the transport assembly and the gripper arms are released from the work piece.
Type:
Grant
Filed:
May 8, 2008
Date of Patent:
January 31, 2012
Assignee:
WPS Industries, Inc.
Inventors:
Jeff Harper, Wayne Parks, Jeremy S. Clark, Anthony G. Clark, Clyde Stearns, Mark Burns, Brian Wallace Smith, John Grubbs, Donald Haley
Abstract: An apparatus and method for lifting, separating and transporting a top panel from a stack of panels through the application sequential suction forces. The apparatus and method uses a vacuum conveying system wherein a sequence of suction forces is exerted from one or more suction apertures. A lift bed located beneath the vacuum conveying system, supports a stack of panels, and can be vertically elevated, causing a top panel from the stack of panels to move within sufficient distance of the vacuum conveying system to allow the sequence of suction forces to lift and separate the top panel. Once the top panel is engaged with the conveyor, the conveyor transports the top panel to a designated location.