Device and conveyance system for packaging elongated items
A device and conveyance system are provided for packaging elongated items such as firewood pieces. The device includes: an elevated structure having an upper platform for receiving the elongated items from a separate conveyor; a paddlewheel diverter located on or above the platform for changing the direction of movement of the elongated items; and one or more elevator shafts having open bottoms. The elevator shafts are located adjacent to the platform and configured for receiving the elongated items after contact with the diverter and for holding the elongated items on support structures while a stack of elongated items is formed. The release of the stack of elongated items from the elevator shafts occurs via the open bottoms of the elevator shafts. The system includes one or more conveyors having features inducing alignment of the elongated items prior to conveyance to the device.
1. A device for packaging elongated items, the device comprising:
an elevated structure having an upper platform for receiving the elongated items from a separate conveyor;
a paddlewheel diverter located above the platform, for changing the direction of movement of the elongated items; and
one or more elevator shafts having open bottoms, the elevator shafts located adjacent to the platform and configured for receiving the elongated items after contact with the diverter and configured for holding the elongated items therein while a stack of elongated items is formed, the elevator shafts provided with one or more support structures configured to hold the stack of elongated items as it is formed and to release the stack of elongated items from the device after it is completely formed, with the release of the stack of elongated items from the elevator shafts occurring via the open bottoms of the elevator shafts,
wherein the elevator shafts have stationary front, back and lateral walls and an inner wall which is pivotable inward with respect to the stationary front, back and lateral walls,
wherein the inner wall pivots on a hinge located between a top corner of the front wall and a top corner of the back wall.
2. The device of claim 1 , wherein the one or more elevator shafts are two opposed elevator shafts arranged laterally outward from outer edges of the platform.
3. The device of claim 1 , wherein the platform includes a central radiused portion extending below the main horizontal plane of the platform, the radiused portion for centralizing an elongated item on the platform between adjacent paddles of the paddlewheel diverter.
4. The device of claim 1 , wherein the paddlewheel diverter is configured for both clockwise and counterclockwise rotation by rotation of the diverter driveshaft.
5. The device of claim 1 , wherein the paddlewheel diverter has eight paddles or sixteen paddles.
6. The device of claim 5 , wherein the paddlewheel diverter is substantially centered above the radiused portion and the paddles extend below a horizontal plane of the platform and follow a profile of the radiused portion during rotation of the diverter.
7. The device of claim 1 , wherein rotation of the diverter is controlled by a servomotor.
8. The device of claim 1 , wherein pivoting of the inner wall is driven by an actuator mounted between a lower end of the inner wall and an inner support frame member for adjusting the volume of the elevator shaft to place packaging on the lower end of the elevator shaft or to dislodge a jammed stack of the elongated items.
9. A conveyor system configured for use with the device of claim 1 , the system comprising:
a first conveyor arranged to deliver the elongated items to the platform of the device; and
a pair of opposed guide walls adjacent to the first conveyor, the guide walls angled towards each other and aligned with adjacent paddles of the paddlewheel diverter in an open resting position of the diverter where the adjacent paddles form an inverted “V” shape above the platform.
10. The conveyor system of claim 9 , further comprising a second conveyor arranged to convey the elongated items to the first conveyor.
11. The conveyor system of claim 10 , further comprising a centrifugal feeder configured to convey the elongated items to the second conveyor.
12. The conveyor system of claim 11 , further comprising an alignment rotor arranged between the second conveyor and the centrifugal feeder, the alignment rotor configured for rotation to induce alignment of the elongated items with a longitudinal axis of the second conveyor.
13. The conveyor system of claim 10 , further comprising a stack limiting rotator adjacent to the second conveyor, the stack limiting rotator configured to displace a stacked elongated item out of the conveyor system.
14. The conveyor system of claim 13 , wherein the alignment rotator and the stack limiting rotator are configured for rotation driven by a single driveshaft via a belt connecting the alignment rotator and the stack limiting rotator.
15. The conveyor system of claim 9 , further comprising a sensor configured to detect when a first elongated item is positioned on the platform and a second elongated item is on the first conveyor within a threshold distance from the platform, the sensor in communication with a driver of the first conveyor to stop and reverse the conveyor for a predetermined period of time to further separate the second elongated item from the first elongated item.
16. The use of the device of claim 1 , for packaging elongated items, wherein the elongated items are firewood, lumber pieces, pipes, cylinders, rods or vegetables.
17. The use of claim 16 , wherein the elongated items range in length from between about 2 inches to about 18 inches.
18. The use of the system of claim 9 , for packaging elongated items, wherein the elongated items are firewood, lumber pieces, pipes, cylinders, rods or vegetables.
19. The use of claim 18 , wherein the elongated items range in length from between about 2 inches to about 18 inches.
20. A device for packaging elongated items, the device comprising:
an elevated structure having an upper platform for receiving the elongated items from a separate conveyor;
a paddlewheel diverter located above the platform, for changing the direction of movement of the elongated items; and
one or more elevator shafts having open bottoms, the elevator shafts located adjacent to the platform and configured for receiving the elongated items after contact with the diverter and configured for holding the elongated items therein while a stack of elongated items is formed, the elevator shafts provided with one or more support structures configured to hold the stack of elongated items as it is formed and to release the stack of elongated items from the device after it is completely formed, with the release of the stack of elongated items from the elevator shafts occurring via the open bottoms of the elevator shafts,
wherein the elevator shafts have stationary front, back and lateral walls and an inner wall which is pivotable inward with respect to the stationary front, back and lateral walls,
wherein pivoting of the inner wall is driven by an actuator mounted between a lower end of the inner wall and an inner support frame member for adjusting the volume of the elevator shaft to place packaging on the lower end of the elevator shaft or to dislodge a jammed stack of the elongated items.
21. The device of claim 20 , wherein the actuator is remotely controllable by an operator.
22. A conveyor system configured for use with the device of claim 20 , the system comprising:
a first conveyor arranged to deliver the elongated items to the platform of the device; and
a pair of opposed guide walls adjacent to the first conveyor, the guide walls angled towards each other and aligned with adjacent paddles of the paddlewheel diverter in an open resting position of the diverter where the adjacent paddles form an inverted “V” shape above the platform.