Robotic overdrive units for hybrid sortation systems and methods

Patent metadata

Field	Value
Publication number	US-11084666-B1
Application number	US-201916582344-A
Country	US
Kind code	B1
Filing date	Sep 25, 2019
Priority date	Sep 25, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Hybrid sortation systems and methods may include a floor having a plurality of transfer locations, a plurality of container drive units or pods that may be positioned at respective transfer locations to receive packages, and a plurality of overdrive units that may travel over and sort packages to respective transfer locations. The overdrive units may be configured to travel over container drive units or pods, such that operations or movements of container drive units or pods may be substantially decoupled or independent from operations or movements of overdrive units. In this manner, sort density and throughput of such hybrid sortation systems may be increased, while also reducing congestion associated with operations or movements of robotic drive units.

First claim

What is claimed is:

1. A hybrid sortation system, comprising:
a sortation floor comprising a plurality of transfer locations;
a plurality of container reload stations positioned along a first edge of the sortation floor;
a plurality of container drive units movably positioned at respective transfer locations within the sortation floor, each of the plurality of container drive units configured to receive a respective container pod from a container reload station, the respective container pod configured to receive at least one package;
a plurality of package induct stations positioned along a second edge of the sortation floor; and
a plurality of overdrive units configured to travel along the sortation floor and configured to concurrently travel directly over the plurality of container drive units positioned at respective transfer locations within the sortation floor, each of the plurality of overdrive units configured to receive a respective package from a package induct station and configured to transfer the respective package to a respective container pod within the sortation floor.

2. The hybrid sortation system of claim 1 , wherein the sortation floor includes a plurality of travel paths between at least some of the plurality of transfer locations.

3. The hybrid sortation system of claim 2 , wherein the plurality of container drive units are configured to travel along the plurality of travel paths of the sortation floor and over transfer locations that are unoccupied by respective container drive units.

4. The hybrid sortation system of claim 2 , wherein the plurality of overdrive units are configured to travel along the plurality of travel paths of the sortation floor, over transfer locations that are unoccupied by respective container drive units, and over transfer locations that are occupied by respective container drive units.

5. A system, comprising:
a floor comprising a plurality of transfer locations;
a container drive unit configured to move and position a container pod within the floor; and
an overdrive unit configured to travel along the floor and configured to concurrently travel directly over the container drive unit or the container pod, the overdrive unit configured to transfer a package to a transfer location.

6. The system of claim 5 , wherein the container pod is positioned at the transfer location and is configured to receive the package; and
wherein the overdrive unit is configured to transfer the package to the container pod at the transfer location.

7. The system of claim 5 , wherein the overdrive unit includes a height and a width that are sized to travel over the container drive unit or the container pod.

8. The system of claim 5 , wherein the floor further comprises at least one travel path between at least some of the plurality of transfer locations; and
wherein the overdrive unit is configured to travel along the at least one travel path, over the plurality of transfer locations, over container drive units, or over container pods positioned at respective transfer locations.

9. The system of claim 5 , wherein the overdrive unit further comprises a release mechanism configured to transfer the package to the transfer location, the release mechanism comprising at least one of a conveyor, one or more rollers, a tilting tray, a rotating tray, or a release hatch.

10. The system of claim 5 , wherein the overdrive unit further comprises at least one sensor configured to detect a position of the overdrive unit relative to the floor.

11. The system of claim 10 , wherein the at least one sensor comprises an imaging sensor configured to detect a fiducial marker associated with at least one of the floor or a ceiling over the plurality of transfer locations.

12. The system of claim 10 , wherein the at least one sensor is configured to detect an identifier associated with a container drive unit or a container pod underneath the overdrive unit.

13. The system of claim 5 , wherein the overdrive unit further comprises a lift mechanism configured to at least one of lift, move, or rotate a container pod underneath the overdrive unit, the lift mechanism comprising at least one of a beam, arm, or fork.

14. The system of claim 5 , further comprising:
at least one container reload station positioned along a periphery of the floor and configured to associate the container pod with the container drive unit; and
at least one package induct station positioned along the periphery of the floor and configured to associate the package with the overdrive unit.

15. The system of claim 5 , further comprising:
a controller configured to at least:
determine a first path and a first destination for the overdrive unit to sort the package to the transfer location;
instruct the overdrive unit to travel along the first path to the first destination; and
instruct the overdrive unit to transfer the package to the transfer location associated with the first destination.

16. The system of claim 15 , wherein the controller is further configured to at least:
determine a second path for the container pod to receive the package from the overdrive unit at the first destination associated with the transfer location; and
instruct the container drive unit to move the container pod along the second path to the first destination associated with the transfer location to receive the package from the overdrive unit.

17. A method, comprising:
determining, by a controller, a first path and a first destination on a floor for a first overdrive unit to transfer a package at a transfer location, the first overdrive unit configured to travel along the floor and configured to concurrently travel directly over at least one of a drive unit, a container pod, or a second overdrive unit positioned on the floor;
instructing, by the controller, the first overdrive unit to travel along the first path to the first destination; and
instructing, by the controller, the first overdrive unit to transfer the package at the transfer location associated with the first destination.

18. The method of claim 17 , wherein instructing the first overdrive unit to travel along the first path further comprises:
instructing the first overdrive unit to travel over at least one of:
a travel path between respective transfer locations on the floor;
respective transfer locations on the floor;
container pods positioned at respective transfer locations on the floor; or
drive units configured to move respective container pods between respective transfer locations on the floor.

19. The method of claim 17 , wherein instructing the first overdrive unit to transfer the package at the transfer location associated with the first destination further comprises:
instructing the first overdrive unit to travel to the first destination that is adjacent to the transfer location; and
instructing the first overdrive unit to actuate at least one of a conveyor, one or more rollers, a tilting tray, or a rotating tray to transfer the package at the transfer location that is adjacent to the first overdrive unit.

20. The method of claim 17 , wherein instructing the first overdrive unit to transfer the package at the transfer location associated with the first destination further comprises:
instructing the first overdrive unit to travel to the first destination that is over the transfer location; and
instructing the first overdrive unit to actuate a release hatch to transfer the package at the transfer location that is under the first overdrive unit.

Assignees

• Amazon Tech Inc

Inventors

• Eddy Victoria
• Porter Brandon William
• Campbell Stephen T

Classifications

• B07C3/02

  Apparatus characterised by the means used for distribution · CPC title

• B07C2501/0063

  Using robots · CPC title

• B07C5/36

  Sorting apparatus characterised by the means used for distribution {(sorting according to destination B07C3/003, B07C3/02)} · CPC title

• B65G1/1378 Primary

  the orders being assembled on fixed commissioning areas remote from the storage areas · CPC title

• B07C3/087

  the objects being taken up in transport files or holders which are not part of the conveyor belts (cable post B65G) · CPC title