Sliding shoe sorter and methods of using sliding shoe sorter

• US 6,478,144 B1
• Filed: 09/21/2000
• Issued: 11/12/2002
• Est. Priority Date: 09/21/2000
• Status: Expired due to Term

• Current Assignee: Intelligrated Headquarters LLC (Honeywell International Inc.)
• Original Assignee: FKI Industries Incorporated 's FKI Logistex Automation Division
• Inventors: Sweazy, Eric
• Primary Examiner(s): Valenza, Joseph E.
• Application Number:
  US09/666,321
• Time in Patent Office: 782 Days
• Field of Search: 198/370.02, 198/890
• US Class Current: 198/890
• CPC Class Codes: B07C 3/065 construction of switches therefor
• CPC Class Codes: B65G 2207/36 Pushing shoes on conveyors
• CPC Class Codes: B65G 47/844 the article-engaging elements being pushers transversally movable on the supporting surface, e.g. pusher-shoes

Abstract

The present invention relates to sliding shoe sorters and methods of using those sorters. One or more pluralities of the shoes are interposed between the conveyors lateral edges and can be orderly advanced in lines. Controllers activate or deactivate the diverters which direct the sliding shoes toward one or more receivers, and the diversion of the shoes can result in the egressing of an item away from the conveyer. The receivers can be provided with rediverters to redirect the shoes toward the interposed sliding shoes. Items advanced by the conveyor may have a code placed about them, and after a code has been placed about the item to be sorted, a paradigm or paradigms responsive to the code can be created to orchestrate activation or deactivation of the diverters and/or the rediverters.

Claims

1. A sorter for sorting a first and a second line of items, comprising:

a) a base;

b) a conveyor having a first edge and a second edge;

c) a drive;

d) a first receiver proximate to said first edge and a second receiver proximate to said second edge;

e) a first plurality of shoes substantially parallel to said first line of items and located inward from said first line of items outlining a first path;

f) a second plurality of shoes positioned between said first plurality of shoes and said second line of items;

g) a first diverter and a second diverter; and

h) a first controller for said first diverter and a second controller for said second diverter.

2. A method of sorting a plurality of items, comprising the steps of:

a) ordering a first plurality of shoes and a second plurality of shoes between;

i) a first line of said plurality of items and a second line of said plurality of items; and

ii) a first receiver and a second receiver, wherein said first plurality of shoes and said second plurality of shoes are substantially parallel;

b) transferring one or more of said plurality of items to be sorted to a conveyor;

c) advancing one or more of said plurality of items, said conveyor and said plurality of shoes;

d) monitoring one or more of said plurality of items to be sorted; and

e) activating a first diverter to cause one or more of said plurality of shoes to be directed toward said first receiver or a second diverter to cause one or more of said plurality of shoes to be directed toward said second receiver or both.

3. A sorter, comprising:

a) a base;

b) a conveyor for conveying a first line of items and a second line of items, wherein said first line items are spaced laterally from said second line items, including;

i) a first edge;

ii) a second edge; and

iii) a centerline between said first edge and said second edge;

c) a drive;

d) a first receiver proximate to said first edge;

e) a second receiver proximate to said second edge;

f) a first plurality of shoes positioned near said centerline and interposed between said first line and said second line of items outlining a first pathway for said first plurality of shoes;

g) a second plurality of shoes positioned between said first line and second line of items outlining a second pathway for said second plurality of shoes;

h) a first diverter;

i) a second diverter;

j) a first controller for said first diverter; and

k) a second controller for said second diverter.

4. The invention of claim 3 wherein said first controller further comprises a first predetermined paradigm for activating or deactivating said first diverter.

5. The invention of claim 4 wherein said second controller further includes said first predetermined paradigm or a second predetermined paradigm for activating or deactivating said second diverter.

6. The invention of claim 5 wherein said first or said second predetermined paradigm or both respond to a code located about an item to be sorted.

7. The invention of claim 6 wherein:

a) said first receiver further comprises a first rediverter; and

b) second receiver further comprises a second rediverter.

8. The invention of claim 7 further comprising a sensor proximate to said conveyor.

9. A method of sorting a first line and a second line of a plurality of items comprising the steps of:

a) ordering a first plurality of shoes and a second plurality of shoes between said first line of said plurality of items and said second line of said plurality of items, wherein said first line of items and said second line of items are spaced laterally from each other;

b) transferring one or more of said plurality of items to be sorted to a conveyor carrying said first line and said second line of said plurality of items;

c) advancing one or more of said plurality of items, said conveyor and said plurality of shoes;

d) monitoring one or more of said plurality of items to be sorted; and

e) activating a first diverter to cause one or more of said first plurality of shoes to be directed toward a first receiver or a second diverter to cause one or more of said plurality of shoes to be directed toward a second receiver or both.

10. The invention of claim 9 further comprising the step of creating a paradigm responsive to codes about said plurality of items for controlling activation or deactivation of said first diverter or said second diverter or both.

11. The invention of claim 10 further comprising the step of rediverting one or more of said plurality of shoes from said first receiver toward said first line of said plurality of items.

12. The invention of claim 11 further comprising the steps of rediverting one or more of said plurality of shoes from said second receiver toward said second line of said plurality of items.

13. A sorter for sorting a first line and a second line of a plurality of items, comprising:

a) a base;

b) a drive;

c) a conveyor for conveying said first line of said plurality of items and said second line of said plurality of items, wherein said first line items are spaced laterally from said second line items, further including;

i) a first edge;

ii) a second edge; and

iii) a centerline between said first edge and said second edge;

d) a first receiver proximate to said first edge of said conveyor;

e) a second receiver proximate to said second edge of said conveyor;

f) a first plurality of shoes positioned between said first edge and said centerline and interposed between said first line of said plurality of items and said second line of said plurality of items outlining a first and undiverted pathway for said first plurality of shoes;

g) a second plurality of shoes positioned between said first line of said plurality of items and said second line of said plurality of items and substantially parallel to said first pathway for said first plurality of shoes outlining a second and undiverted pathway of said second plurality of shoes;

h) a first diverter aligned with said first pathway;

i) a second diverter aligned with said second pathway; and

j) a controller for;

i) said conveyor;

ii) said first plurality of shoes; and

iii) said second plurality of shoes.

14. The invention of claim 13 further comprising:

a) a first crossover corresponding with said first diverter aligned with said first undiverted pathway for guiding any diverted first pathway shoe into said first receiver; and

b) a second crossover corresponding with said second diverter aligned with said second undiverted pathway for guiding any diverted second pathway shoe into said second receiver.

15. The invention of claim 14 further comprising a predetermined paradigm.

16. The invention of claim 15 further comprising:

a) more than one first pathway diverter and a corresponding crossover for each said first pathway diverter.

17. The invention of claim 16 further comprising:

a) more than one second pathway diverter and a corresponding crossover for each said second pathway diverter.

18. The invention of claim 17 further comprising a front end sensor for detecting codes about said plurality of items.

19. A method of sorting simultaneously a first line and a second line of a plurality of items, comprising the steps of:

a) mounting a conveyor to a base for conveying said first line items spaced laterally from said second line items, wherein said conveyor further comprises;

i) a plurality of slats having slots there between;

ii) a first lateral edge;

iii) a second lateral edge; and

iv) a centerline between said first lateral edge and said second lateral edge;

b) positioning a first shoe receiver proximate said first lateral edge;

c) positioning a second shoe receiver proximate said second lateral edge;

d) ordering a first plurality of shoes between said first lateral edge and said centerline and simultaneously interposing said first plurality of shoes between said first line and said second line of said plurality of items, thereby outlining a first pathway for said first plurality of shoes;

e) situating sequentially a first plurality of diverters communicating with said first pathway for diverting, singularly or serially, one or more of said first plurality of shoes toward said first shoe receiver;

f) guiding any diverted first pathway shoe into said first shoe receiver;

g) interposing a second plurality of shoes between said first line and said second line of said plurality of items, thereby outlining a second pathway for said second plurality of shoes;

h) situating a second diverter communicating with said second pathway for diverting, singularly or serially, one or more of said second plurality of shoes toward said second shoe receiver;

i) guiding any diverted second pathway shoe into second shoe receiver;

j) front end loading said first line items onto said conveyor;

k) front end loading said second line items onto said conveyor;

n) monitoring front end loading; and

o) controlling advancement of and offloading of said first line and said second line items.

20. The method of claim 19 further comprising the steps of:

a) repositioning any shoes advancing in said first shoe receiver into said first shoe pathway, prior to completing a conveying cycle for said first plurality of said shoes; and

b) repositioning any shoes advancing in said second shoe receiver into said second shoe pathway, prior to completing said conveying cycle for said second plurality of shoes.

21. The method of claim 20 further comprising the steps of:

a) singulating said first line items prior to front end loading;

b) singulating said second line prior to front end loading.

22. The method of claim 21 further comprising the step of situating sequentially a plurality of second pathway diverters for diverting, singularly or serially, one or more of said second plurality of shoes toward said second shoe receiver.