Sort mechanism and method of use

• US 20070090028A1
• Filed: 10/25/2005
• Published: 04/26/2007
• Est. Priority Date: 10/25/2005
• Status: Abandoned Application

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Varney, Barton
• Application Number:
  US11/256,975
• Publication Number:
  US 20070090028A1
• Time in Patent Office: Days
• US Class Current: 209/584
• CPC Class Codes: B07C 3/00 Sorting according to destination collating the pages of a book B42C1/00

Abstract

An apparatus and method for sorting product. The apparatus comprises at least one unload module and at least two sorters. An intermediate sort conveyor is configured to receive product from the at least one unload module and divert the product to either of the at least two sorters via a plurality of induction units in a transportation path with the at least two sorters.

Claims

1. An apparatus, comprising:

at least one unload module;

at least two sorters; and

an intermediate sort conveyor configured to receive product from the at least one unload module and divert the product to either of the at least two sorters via a plurality of induction units in a transportation path with the at least two sorters.

2. The apparatus of claim 1, further comprising a second intermediate sort conveyor and a third intermediate sort conveyor, wherein the at least two sorters include four sorters and the intermediate sort conveyor is positioned adjacent a first sorter and a second sorter of the four sorters, the second intermediate sort conveyor is positioned adjacent the second sorter and a third sorter of the four sorters and the third intermediate conveyor is positioned adjacent the third sorter and a fourth sorter of the four sorters.

3. The apparatus of claim 2, wherein an output of the at least one unload module does not exceed a throughput of the four sorters.

4. The apparatus of claim 1, wherein the intermediate sort conveyor is a looped configuration and the plurality of induction units include a first number of induction units positioned on a first side of the looped configuration and a second number of induction units are positioned on a second, opposing side of the looped configuration.

5. The apparatus of claim 1, further comprising a second intermediate sort conveyor, wherein:

the at least two sorters include at least three sorters, the intermediate sort conveyor is positioned between a first sorter and a second sorter of the at least three sorters and the second intermediate sort conveyor is positioned between the second sorter and a third sorter of the at least three sorters; and

the intermediate sort conveyor and the second intermediate sort conveyor comprise a plurality of discharge units diverting the product away from the at least three sorters.

6. The apparatus of claim 5, further comprising an intermediate pre-sorter linked to the plurality of discharge units of the intermediate sort conveyor and the second intermediate sort conveyor, the intermediate pre-sorter configured in a loop configuration and configured to discharge the product received from the intermediate sort conveyor to the third sorter and the product received from the second intermediate sort conveyor to the first sorter.

7. The apparatus of claim 6, further comprising a controller which is configurable to coordinate:

discharge of product from the intermediate sort conveyor to the first sorter and the second sorter based on obtained product information;

sort of the discharged product using the first sorter and the second sorter;

discharge of remaining product on the intermediate sort conveyor to the pre-sorter;

transport and induct of the remaining product onto the third sorter; and

sorting the remaining product using the third sorter.

8. The apparatus of claim 7, wherein the controller is further configurable to coordinate:

discharge of other product from the second intermediate sort conveyor to the second sorter and the third sorter based on obtained product information;

sort of the discharged other product using the second sorter and the third sorter;

discharge of remaining other product from the second intermediate sort conveyor to the pre-sorter;

transport and induct of the remaining other product onto the first sorter; and

sort the remaining other product using the first sorter.

9. The apparatus of claim 1, further comprising a controller which is configurable to coordinate product being inducted onto one of the at least two sorters from the intermediate sort conveyor based on product information of the product reconciled by the controller, and coordinating sorting of the product using the at least two sorters.

10. The apparatus of claim 1, wherein the product is mail.

11. The apparatus of claim 1, further comprising at least one sensor to determine a position of the product.

12. The apparatus of claim 1, further comprising a recirculating line connected between one of the least two sorters and one of the at least one unload module.

13. The apparatus of claim 1, wherein the at least two sorters are at least three sorters and the at least one unload module is at least two unload modules, and the intermediate sort conveyor is further configured to receive product from the at least two unload module and divert the product to any of the least three sorters via a plurality of induction units.

14. A system for sorting product, comprising:

at least three sorters, including a first sorter, a second sorter and a third sorter;

a first intermediate sort conveyor having induction units for inducting product to either of the first sorter and the second sorter;

a second intermediate sort conveying having induction units for inducting product to either of the second sorter and the third sorter; and

a pre-sorter loop configured to;

receive non-inducted product from the first intermediate sort conveyor which is to be inducted onto the third sorter;

receive non-inducted product from the second intermediate sort conveyor which is to be inducted onto the first sorter; and

discharge non-inducted product from the first and second intermediate sort conveyors to the first sorter and the third sorter.

15. The system of claim 14, further comprising a controller which is configurable, based on product information of the product, to coordinate:

the induction of the product onto the first sorter and the second sorter from the first intermediate sort conveyor;

the induction of the product onto the second sorter and the third sorter from the second intermediate sort conveyor;

the discharge of the non-inducted product from the first and second intermediate sort conveyors onto the pre-sorter loop;

discharge of the non-inducted product from the pre-sort loop to the first sorter and the third sorter; and

sorting to a certain depth level of the inducted product and the non-inducted product by the first, second and third sorters.

16. The system of claim 15, wherein the first and second intermediate conveyors are configured in a loop.

17. The system of claim 14, wherein the first intermediate sort conveyor is positioned between the first sorter and the second sorter and the second intermediate sort conveyor is positioned between the second sorter and the third sorter.

18. The system of claim 14, further comprising at least one sensor to determine a position of the product.

19. The system of claim 14, wherein the product are mail pieces.

20. A system for sorting mail, comprising:

a sorting mechanism comprising n+1 sorters;

an intermediate conveying system having (n+1)-1 conveyors, each of the conveyors being alternatively positioned with the n+1 sorters and having induction units to induct mail pieces to each adjacent sorter; and

at least one unload module configured to induct the mail pieces to each of the (n+1)-1 conveyors, the at least one unload module configured to have a capacity which is equal to or less than a throughput of the n+1 sorters.

21. The system of claim 20, further comprising a pre-sorter loop in a transportation path of the n+1 sorters and the (n+1)-1 conveyors, wherein:

the n+1 sorters comprise;

a first sorter configured in a loop;

a second sorter configured in a loop;

a third sorter configured in a loop; and

a fourth sorter configured in a loop;

the (n+1)-1 conveyors comprise;

a first intermediate conveyor configured to induct the mail pieces to the first sorter and the second sorter and to discharge mail pieces for sorting by the third sorter and the fourth sorter to the pre-sorter loop;

a second intermediate conveyor configured to induct the mail pieces to the second sorter and the third sorter and to discharge mail pieces for sorting by the first sorter and the fourth sorter to the pre-sorter loop; and

a third intermediate conveyor configured to induct the mail pieces to the third sorter and the fourth sorter and to discharge mail pieces for sorting by the first sorter and the second sorter to the pre-sorter loop.

22. The system of claim 21, further comprising a controller for coordinating the sorting of the mail pieces by use of the n+1 sorters, based on the mail information.

23. A method of sorting mail using a plurality of sorters, comprising:

obtaining product information from mail pieces;

inducting the mail pieces onto at least one intermediate sort conveyor;

determining whether the mail pieces should be inducted onto one of at least two adjacent sorters, for sequencing or sorting to another depth level; and

at least one of;

if the determining step is affirmative, inducting the mail pieces onto one of at least two adjacent sorters for the sequencing or sorting to another depth level;

if the determining step is negative, inducting the mail pieces onto an intermediate conveyance from the at least one intermediate sort conveyors, and transporting the mail pieces to another sorter, which was not originally in a transportation path with the at least one intermediate sort conveyors, and inducting the mail pieces onto the another sorter.