Modular handling system with multi-level sorter and method of using same

• US 9,988,218 B2
• Filed: 08/26/2016
• Issued: 06/05/2018
• Est. Priority Date: 08/26/2015
• Status: Active Grant

• Current Assignee: Robotica Incorporated
• Original Assignee: Robotica Incorporated
• Inventors: Dugat, Jay Mark, Pettit, Andy
• Primary Examiner(s): Nicholson, III, Leslie A
• Assistant Examiner(s): Campbell, Keith R
• Application Number:
  US15/248,967
• Publication Number:
  US 20170057756A1
• Time in Patent Office: 648 Days
• Field of Search: 1983701
• CPC Class Codes: B07C 5/36 Sorting apparatus characterised by the means used for distribution sorting according to destination B07C3/003, B07C3/02
• CPC Class Codes: B65G 13/10 Switching arrangements
• CPC Class Codes: B65G 15/12 with two or more endless belts
• CPC Class Codes: B65G 15/50 Endless load-carriers consisting of a series of parallel ropes or belt strips
• CPC Class Codes: B65G 37/02 Flow-sheets for conveyor combinations in warehouses, magazines or workshops
• CPC Class Codes: B65G 47/54 at least one of which is a roller-way
• CPC Class Codes: B65G 47/844 the article-engaging elements being pushers transversally movable on the supporting surface, e.g. pusher-shoes

Abstract

A multi-level sorter of a handling system for transporting cases. The handling system has conveyors extending between locations of a facility. The multi-level sorter includes a multi-level frame positionable adjacent at least one outlet of at least one of the conveyors, at least one diverter carried by the multi-level frame, and at least one bin supported about at least one of the levels of the multi-level frame. Each of the outlets of the conveyors aligned with a level of the multi-level frame to pass the cases thereto. The diverter has rollers to pass the cases along a main path and crossbands to selectively divert the cases from the main path. Each of the bins is alignable with the diverter to receive the diverted cases therefrom whereby the cases are sorted.

Claims

1. A crossband of a diverter of a conveyor, the diverter comprising conveyor rollers and drive rollers, the conveyor rollers rotatably aligned with a path of the conveyor, each of the drive rollers positioned at opposite ends of the conveyor rollers, a top of the conveyor rollers defining a conveyor surface for passing cases therealong, the crossband comprising:

a continuous loop rotatably encircling the drive rollers, the continuous loop passing between a pair of the conveyor rollers, the continuous loop having an inner surface rotatably positioned about the drive rollers and an outer surface shaped to drivingly engage the cases, the continuous loop comprising a base portion having a thickness and at least one cam portion having an increased thickness, the outer surface along the base portion positioned below the conveyor surface, the outer surface along the at least one cam portion extending a distance above the conveyor surface, the at least one cam portion having an incline at a contact end thereof shaped to engage with a bottom of the cases to lift and push the cases as the continuous loop advances about the drive rollers whereby the cases are selectively diverted from the conveyor;

wherein the continuous loop is unitary.

2. The crossband of claim 1, wherein the continuous loop comprises a high friction material.

3. The crossband of claim 2, wherein the high friction material is positioned along contact surfaces of the continuous loop.

4. The crossband of claim 1, wherein the inner surface of the continuous loop comprises a toothed surface shaped to engage with a toothed surface of the drive rollers.

5. The crossband of claim 1, wherein the continuous loop has a radial cross-section shaped to fill a space between adjacent ones of the conveyor rollers.

6. The crossband of claim 1, wherein the continuous loop has a flat outer surface, a flat bottom surface, and tapered side surfaces, the tapered side surfaces shaped to receivingly engage the conveyor rollers.

7. The crossband of claim 1, wherein a width of the crossband along the cam portion is greater than a width of the crossband along the base portion.

8. The crossband of claim 1, wherein a length of the cam portion is greater than at least one of a length and a width of the cases.

9. A diverter of a handling system for transporting cases about a facility, the handling system having at least one conveyor, the diverter comprising:

a frame positioned adjacent the at least one conveyor;

conveyor rollers rotationally supported by the frame and aligned with the at least one conveyor, a top of the conveyor rollers defining a conveyor surface;

drive rollers positioned at opposite ends of the conveyor rollers and rotationally supported by the frame; and

crossbands positioned between the conveyor rollers, the crossbands rotatable in a direction transverse to the conveyor rollers, each of the crossbands comprising;

a continuous loop rotatably encircling the drive rollers, the continuous loop passing between a pair of the conveyor rollers, the continuous loop having an inner surface rotatably positioned about the drive rollers and an outer surface shaped to drivingly engage the cases, the continuous loop comprising a base portion having a thickness and at least one cam portion having an increased thickness, the outer surface along the base portion positioned below the conveyor surface, the outer surface along the at least one cam portion extending a distance above the conveyor surface, the at least one cam portion having an incline at a contact end thereof shaped to engage with a bottom of the cases to lift and push the cases as the continuous loop advances about the drive rollers whereby the cases are selectively diverted from the at least one conveyor;

wherein the continuous loop is unitary.

10. The diverter of claim 9, wherein the frame comprises a plurality of horizontal levels, each of the plurality of horizontal levels having the conveyor rollers, the drive rollers, and the crossbands thereon.

11. The diverter of claim 9, further comprising O-ring bands rotationally supported about the conveyor rollers, the O-ring bands rotationally driven by a line shaft.

12. The diverter of claim 9, wherein the frame is one of connected to and integral with the conveyor.

13. The diverter of claim 9, wherein the at least one conveyor comprises another diverter.

14. The diverter of claim 9, wherein the at least one cam portions of the crossbands are one of aligned and staggered.

15. A method of transporting cases about a facility, the method comprising:

positioning a diverter about a conveyor of the facility, the diverter comprising a frame, conveyor rollers rotatably aligned with a path of the conveyor, drive rollers positioned at opposite ends of the conveyor rollers, and crossbands positioned between the conveyor rollers, the crossbands rotatably encircling the drive rollers, the conveyor rollers defining a conveyor surface, each of the crossbands comprising;

a continuous loop having an inner surface rotatably positioned about the drive rollers and an outer surface shaped to drivingly engage the cases, the continuous loop comprising a base portion having a thickness and at least one cam portion having an increased thickness, the outer surface along the base portion positioned below the conveyor surface, the outer surface along the at least one cam portion extending a distance above the conveyor surface, the at least one cam portion having an incline at a contact end thereof shaped to engage with the cases;

wherein the continuous loop is unitary;

advancing a portion of the cases along a conveyor path of the conveyor and onto the diverter; and

selectively diverting a portion of the cases away from the conveyor path by selectively rotating the crossbands to engage the at least one cam portion with the cases and advance the portion of the cases.

16. The method of claim 15, wherein the advancing comprises rotationally driving the conveyor rollers.

17. The method of claim 15, wherein the selectively diverting comprises rotating the crossbands with the drive rollers.

18. The method of claim 15, wherein the selectively diverting comprises selectively diverting the cases at an angle by selectively staggering the cam portions of the crossbands.

19. A crossband of a diverter of a conveyor, the diverter comprising conveyor rollers and drive rollers, the conveyor rollers rotatably aligned with a path of the conveyor, each of the drive rollers positioned at opposite ends of the conveyor rollers, a top of the conveyor rollers defining a conveyor surface for passing cases therealong, the crossband comprising:

a continuous loop rotatably encircling the drive rollers, the continuous loop passing between a pair of the conveyor rollers, the continuous loop having an inner surface rotatably positioned about the drive rollers and an outer surface shaped to drivingly engage the cases, the continuous loop comprising a chain with segments connected thereto, the segments shaped to define a base portion having a thickness and at least one cam portion having an increased thickness, the outer surface along the base portion positioned below the conveyor surface, the outer surface along the at least one cam portion extending a distance above the conveyor surface, the segments defining an incline at a contact end and a decline at an opposite thereof shaped to engage with a bottom of the cases to lift and push the cases as the continuous loop moves in either direction about the drive rollers whereby the cases are selectively diverted from the conveyor.

20. The crossband of claim 19, wherein the continuous loop comprises a chain with segments connected thereto, the segments along the at least one cam portion having the increased thickness.