Abstract:
The invention concerns a method and an arrangement for stacking timber packages in layer that uses a transfer arrangement comprising mobile carrier planes. The carrier planes in turn form a direct continuation of an input transporter in order to receive layers fed from this transporter by being caused to lift from below a complete layer from the input transporter and displacing the layer in over the stacking table. After that, the carrier planes are withdrawn from the stacking table while the layer of timber is scraped off from the carrier plane or, the stacking table is arranged to move downwards. The transfer arrangement uses a first, a second and a third carrier plane which are arranged to move mutually in a cycle in such a manner that one pair of two consecutive carrier planes is located at the same time at a position above the stacking table.
Abstract:
A system and apparatus for dispensing lumber is described. The apparatus includes a pusher, such as a chain driven lug, which pushes against the side of a row of lumber, thus sequentially pushing the top row of a lumber pack into a transport system. The apparatus also includes a hydraulic lift which enables the lumber pack to be moved upwards for the dispensing of subsequent rows.
Abstract:
A lumber transfer system and a method for individually transferring lumbers from a feeding conveyor to an outfeed conveyor. Detectors are used for monitoring a lumber presence along a corridor on a longitudinal conveying surface. Motorized blocking fingers located about the corridor and transversally spaced along the conveying surface are provided and are configured for moving between blocking and unblocking positions. A controller is also provided, the controller having at least one input for receiving detecting signals from the detectors respectively, the detecting signals of the detectors being respectively associated to the motorized blocking fingers. The controller also has at least one output for sending independent control signals to the motorized blocking fingers respectively, in response to the detecting signals, for moving the respective blocking fingers for which a lumber presence is detected from a blocking to an unblocking position, and otherwise keeping the respective motorized blocking fingers in their blocking position.
Abstract:
The present invention discloses methods and apparatus for pre-bunking cut timber and transporting cut timber. A plurality of portable U-shaped bunks or cradles are first releasably attached to a portable skid, and logs are loaded onto the cradles. In an embodiment, the cradles are collapsible. This step may be performed before a transportation trailer is on site. The load of logs, with the portable cradles are then moved as a unit and attached to the trailer. The trailer is provided with attachment hardware adapted to releasably engage the portable bunks. In an embodiment of the invention the trailer attachment hardware is removably attachable to the trailer, permitting the trailer to be used for other purposes. The present system permits improvements in efficiency by permitting logs to be pre-bunked while the trailer is in use elsewhere.
Abstract:
An optimizing planermill system includes a control system and a workpiece feed path for feeding an array of workpieces linearly downstream to an optimizing planer. The gap size between successive workpieces is set so that each gap provides enough time for relative movement of at least one of movable cutting elements in the planer and movable guiding elements so as to obtain relative movement between the cutting elements and the workpiece being next fed in for optimized positioning.
Abstract:
The system and a method are for lengthwise positioning of transversally-oriented elongated articles as they are being longitudinally conveyed, the system and method comprising sliding a laterally extending end of the elongated article against a fence oriented in a converging angle relative to the conveyor, to thereby displace the elongated article lengthwisely. The fence is comprised of a plurality of adjacent gates which can be individually moved out of interference with the elongated article once the elongated article has been lengthwisely displaced to the desired transversal position. The fence can be provided as a fence assembly having the plurality of gates mounted to a common base, and having a plurality of actuators each connected between the base and a respective gate for moving the gate.
Abstract:
A virtual lug loader includes a lug loader for loading workpieces in a flow direction into the spaced apart lugs on a lugged conveyor, wherein the workpieces are transversely oriented relative to the flow direction. The lug loader includes an array of pairs of endless conveyors for conveying the workpieces downstream, wherein each pair of endless conveyors in the array include first and second endless conveyors. The first and second endless conveyors are spaced laterally apart across the flow direction. Each are aligned substantially in the flow direction. The array forms a continuous upper surface in the flow direction for supporting the workpieces translating downstream in the flow direction. Each pair of endless conveyors in the array overlap adjacent pairs of endless conveyors in the array. At least one pair of endless conveyors in the array include independently actuable first and second drives independently driving their corresponding first and second endless conveyors.
Abstract:
A lumber stacker apparatus for moving a course of lumber and depositing the course on a stack of lumber includes a crank mechanism, a fork assembly, an arm member, and motor means. The crank mechanism is operatively engaged to the fork assembly by the arm member. The arm member has a crank arm affixed to a crank shaft to move the fork assembly in a reciprocating stroke in response to rotation of the crank shaft. The motor means is operatively connected to the crank shaft to rotate the crank shaft at a constant angular velocity through 200° to 260°, preferably 230°, to drive the fork assembly through a slow forward stroke, to move the course of lumber, and to rotate the crank shaft through 100° to 160°, preferably 130°, to drive the fork assembly through a rapid backward stroke once the course of boards has been deposited on the stack of lumber.
Abstract:
The present invention discloses methods and apparatus for pre-bunking cut timber and transporting cut timber. A plurality of portable U-shaped bunks or cradles are first releasably attached to a portable skid, and logs are loaded onto the cradles. In an embodiment, the cradles are collapsible. This step may be performed before a transportation trailer is on site. The load of logs, with the portable cradles are then moved as a unit and attached to the trailer. The trailer is provided with attachment hardware adapted to releasably engage the portable bunks. In an embodiment of the invention the trailer attachment hardware is removably attachable to the trailer, permitting the trailer to be used for other purposes. The present system permits improvements in efficiency by permitting logs to be pre-bunked while the trailer is in use elsewhere.