Automated package unloading system

Patent metadata

Field	Value
Publication number	US-10099867-B2
Application number	US-201615351732-A
Country	US
Kind code	B2
Filing date	Nov 15, 2016
Priority date	Nov 15, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

Disclosed are various embodiments for an automated package unloading system. An automated package unloading system can include an end effector supported by a supporting frame which is mounted to a conveyor system. The end effector and/or the conveyor can be configured to move into and out of a container containing stacked packages. The end effector can be configured to attach to the packages and pull the packages from their original position. The end effector can further be configured to release the packages onto the underlying conveyor.

First claim

Therefore, the following is claimed:

1. An apparatus for facilitating an unloading of packages from a container, the apparatus comprising:
a conveyor system comprising a conveyor frame and a conveyor belt, the conveyor belt being supported by the conveyor frame and being moveable about the conveyor frame relative to a length of the conveyor frame;
a supporting frame mounted on the conveyor frame of the conveyor system, the supporting frame comprising a first section and a second section being interconnected via a third section, the first section being attached to a first side of the conveyor frame and the second section being attached to an opposing second side of the conveyor frame, the supporting frame being substantially perpendicular to a length of the conveyor system;
an end effector assembly coupled to the supporting frame and being moveable about a horizontal axis relative to the supporting frame, the end effector assembly comprising:
a manifold plate extending along a vertical plane that is substantially parallel to the supporting frame;
a gripping component coupled to and extending outwardly from the manifold plate along the horizontal axis relative to the supporting frame, the gripping component being configured to engage with one or more of the packages stacked in the container; and
one or more first sensors, the one or more first sensors being configured to generate data indicating a distance between the end effector assembly and the packages;

a pair of horizontal members coupled substantially perpendicular to the supporting frame and being laterally offset from one another, wherein the end effector assembly is directly coupled to the supporting frame via the pair of horizontal members; and
the second sensor attached to an underside of at least one of the pair of horizontal members, a second sensor being configured to generate data indicating a position of at least one of the packages on an underlying portion of the conveyor belt of the conveyor system.

2. The apparatus of claim 1 , wherein the gripping component comprises a gripping interface coupled to a spring-loaded compensator.

3. The apparatus of claim 2 , wherein the gripping interface comprises at least one of a vacuum suction cup, a foam member, or an electrostatic plate.

4. The apparatus of claim 1 , and wherein each of the pair of horizontal members comprises at least one of a pneumatic actuator, a hydraulic actuator, or an electrical actuator.

5. The apparatus of claim 1 , further comprising a controller being configured to drive movement of the end effector assembly into and out of the container.

6. The apparatus of claim 1 , further comprising a vacuum source coupled to the gripping component.

7. The apparatus of claim 1 , wherein the conveyor frame of the conveyor system is moveable relative to the horizontal axis of the supporting frame, and movement of the end effector assembly is driven by movement of the conveyor frame.

8. The apparatus of claim 1 , wherein the conveyor system comprises a telescoping conveyor system.

9. A method, comprising:
determining, via one or more controllers, a distance between an automated package unloading system and one or more packages packed in a container, the automated package unloading system comprising a U-shaped supporting frame being coupled to a conveyor system, and the U-shaped supporting frame being substantially perpendicular to a length of the conveyor system;
driving, via the one or more controllers, movement of an end effector of the automated package unloading system towards the one or more packages into the container according to the distance, the end effector being directly coupled to the U-shaped supporting frame via a pair of horizontal arms that are substantially perpendicular to the U-shaped supporting frame, the end-effector being moveable about a horizontal axis relative to the U-shaped supporting frame, and the end effector comprising a manifold plate extending along a vertical plane that is substantially parallel to the supporting frame, and one or more gripping components coupled to and extending outwardly from the manifold plate along the horizontal axis relative to the supporting frame;
attaching one or more gripping components of the automated package unloading system to the one or more packages;
pulling the one or more packages by driving, via the one or more controllers, the movement of the end effector out of the container; and
releasing the one or more packages from the one or more gripping components onto the conveyor system for transport to another location,
wherein determining the distance between the automated package unloading system and the one or more packages packed in the container is based at least in part on data generated by a first sensor of the automated package unloading system, and
wherein a second sensor attached to an underside of at least one of the pair of horizontal arms is configured to generate data indicating a presence status of the one or more packages on the conveyor system.

10. The method of claim 9 , wherein the end effector is movable in a reciprocating motion relative to the length of the conveyor system.

11. The method of claim 9 , wherein the one or more gripping components attach to the one or more packages via at least one of a vacuum pressure or an electrostatic force.

12. The method of claim 9 , further comprising driving, via the one or more controllers, the movement of the conveyor system into the container.

13. The method of claim 9 , wherein the one or more packages comprise a plurality of packages stacked on top of one another, and further comprising:
leaving a bottom layer of packages in the container; and
scooping, via the conveyer system, the bottom layer of packages onto the conveyor system.

14. A system, comprising:
a U-shaped supporting frame; and
an end effector assembly coupled to the U-shaped supporting frame and being moveable about a horizontal axis relative to the U-shaped supporting frame, the end effector assembly comprising:
a manifold plate extending along a vertical plane that is substantially parallel to the U-shaped supporting frame; and
at least one gripping component coupled to and extending outwardly from the manifold plate, the at least one gripping component being configured to engage with one or more packages;

a pair of horizontal arms coupled substantially perpendicular to the U-shaped supporting frame, the end effector assembly being directly coupled to the U-shaped supporting frame via the pair of horizontal arms; and
a sensor attached to an underside of at least one of the pair of horizontal arms, the sensor being configured to generate data indicating a presence status of an object.

15. The system of claim 14 , wherein a respective horizontal arm of the pair of horizontal arms comprises at least one of a pneumatic actuator, a hydraulic actuator, or an electrical actuator.

16. The system of claim 14 , wherein the at least one gripping component comprises a gripping interface coupled to a spring-loaded compensator.

17. The system of claim 14 , wherein the at least one gripping component comprises at least one of a vacuum suction cup, a foam member, or an electrostatic plate.

18. The system of claim 14 , further comprising a vacuum source coupled to the at least one gripping component.

19. The system of claim 14 , further comprising a conveyor system and wherein the U-shaped supporting frame is directly mounted to the conveyor system.

20. The system of claim 14 , further comprising anot

Assignees

• Amazon Tech Inc

Inventors

• Ge Chen
• Aalund Martin Peter
• Garrett Samuel Gardner
• Raines Jr Paul Roy
• Ranka Akhil
• Thosar Sonia
• Xu Toby Ge

Classifications

• B65G47/763

  Fixed ploughs or transverse scrapers · CPC title

• B65G67/24 Primary

  Unloading land vehicles · CPC title

• B65G47/91 Primary

  incorporating pneumatic, e.g. suction, grippers · CPC title

• B65G21/14

  to allow adjustment of length or configuration of load-carrier or traction element (varying speed of conveyance by adjusting configuration of load-carrier B65G23/00; {tensioning arrangements for belt or chain B65G23/44}) · CPC title

• B65G2201/025

  Boxes · CPC title