System, method, and program for sorting objects

• US 20040073333A1
• Filed: 05/19/2003
• Published: 04/15/2004
• Est. Priority Date: 11/27/2001
• Status: Abandoned Application

• Current Assignee: Eric A. Brill
• Original Assignee: Eric A. Brill
• Inventors: Brill, Eric A.
• Application Number:
  US10/432,205
• Publication Number:
  US 20040073333A1
• Time in Patent Office: Days
• US Class Current: 700/224
• CPC Class Codes: B07C 3/08 using arrangements of conveyors transport of sheets B65H; transport in general B65G
• CPC Class Codes: B65G 47/38 by dumping, tripping, or releasing load carriers by flexing or tilting travelling structures B65G47/94

Abstract

An object sorting system (100) includes a first sorting matrix (300), a second sorting matrix (200) crossing said first sorting matrix (300), and a control system (120) for directing the sorting of objects (110) to one of a plurality of sort destinations (501).

Claims

1. A system for sorting objects comprising:

a control unit,

a first conveyor sorting matrix,

a second conveyor sorting matrix located below said first sorting matrix,

said first and second sorting matrices are each adapted to receive and transport one or more objects to be sorted,

wherein said first matrix includes one or more primary discharge apertures for discharging said objects to said second matrix,

and wherein said second matrix includes one or more primary discharge locations for discharging said objects to one or more collection areas.

2. The system of claim 1, wherein the second conveyor matrix crosses under the first conveyor matrix.

3. The system of claim 2, wherein the first matrix and the second matrix each has a closed-circuit configuration.

4. The system of claim 3, wherein first conveyor matrix includes a primary discharge aperture in the vicinity of each point that it crosses over the second conveyor matrix.

5. The system of claim 4, wherein the closed-circuit configuration is an ellipse.

6. The system of claim 4, wherein the closed-circuit configuration is a quadrilateral.

7. The system of claim 4, wherein the objects move about the system in a series of steps.

8. The system of claim 7, wherein the steps are of a known fixed interval.

9. The system of claim 8, wherein the control unit utilizes the known interval that each object moves about the system in step-wise fashion to determine a current location of each object and to predict one or more future locations of each object.

10. The system of claim 9, wherein the control unit plans for each object its discharge at the one or more primary discharge apertures.

11. The system of claim 10, wherein the control unit commands the discharge of each object when each object arrives at its respective planned discharge aperture.

12. The system of claim 9, wherein the control unit plans for each object its discharge at the one or more primary discharge locations.

13. The system of claim 12, wherein the control unit commands the discharge for each object when each object arrives at its respective planned discharge location.

14. The system of claim 8, wherein the fixed interval includes a time component having a known duration.

15. The system of claim 8, wherein the fixed interval includes a distance component defining a known distance of object travel.

16. The system of claim 8, wherein the fixed interval includes a time component of known duration and a distance component of known distance of object travel.

17. The system of claim 16, wherein the time component duration is the same for objects on the first conveyor sorting matrix as for the objects on the second conveyor sorting matrix.

18. The system of claim 17, wherein objects on the first conveyor sorting matrix move according to a first value for the distance component, and wherein objects on the second conveyor sorting matrix move according to a second value for the distance component, and wherein said first value is not equal to said second value.

19. The system of claim 14, wherein the duration of the time component is up to about 6 seconds.

20. The system of claim 14, wherein the duration of the time component is about 6 seconds or greater.

21. The system of claim 15, wherein the distance component has a value of up to about 48 inches (1.2 m).

22. The system of claim 15, wherein the distance component has a value of about 48 inches (1.2 m) or greater.

23. The system of claim 18, wherein said first value is greater than about 40 inches (1 m), and wherein the second value is greater than about 30 inches (76 cm).

24. The system of claim 16, further comprising one or more secondary discharge apertures and one or more secondary discharge locations for any object that has failed to discharge as commanded.

25. The system of claim 24, wherein the first and second conveyor matrices each further comprise a plurality of adjacent closed-circuit tracks.

26. The system of claim 25, wherein each step includes a movement substep and an action substep, wherein all objects in the system move a distance equal to the distance component during the movement substep, and wherein one or more objects are discharged during the action substep.

27. A system for sorting objects comprising:

an induction assembly adapted to receive objects for sorting;

an upper sorting circuit adjacent to the induction assembly and adapted to receive objects therefrom;

a lower sorting circuit crossing under said upper sorting circuit and adapted to receive objects therefrom;

a destination assembly adapted for receiving objects from the upper and lower sorting circuits;

one or more sensor assemblies mounted to gather data on the one or more objects; and

a control apparatus connected to the induction assembly, the upper sorting circuit, the lower sorting circuit, and the one or more sensor assemblies and adapted to receive input information therefrom and to send output commands thereto to facilitate the delivery of each input object to the destination assembly.

28. The system of claim 27, wherein the upper circuit and the lower circuit are each ellipses.

29. The system of claim 27, wherein an object on the upper circuit has a primary discharge opportunity to the lower circuit each time the upper circuit crosses the lower circuit.

30. The system of claim 29, wherein the objects move about the system from the induction assembly to the destination assembly in a series of steps.

31. The system of claim 30, wherein the steps are of a known fixed interval.

32. The system of claim 31, wherein the control unit utilizes the data gathered by the one or more sensor assemblies and the known interval that each object moves about the system in step-wise fashion in order to determine a current location of each object and to predict one or more future locations of each object.

33. The system of claim 32, wherein the control unit plans for each object its one or more primary discharge opportunities.

34. The system of claim 33, wherein the control unit diverts at the induction assembly any object that the control unit determines will be unable to discharge at any of the one or more primary discharge opportunities.

35. The system of claim 34, wherein the upper circuit further comprises one or more secondary discharge opportunities.

36. The system of claim 35, wherein the control unit commands an object to discharge at one of the secondary discharge opportunities in the event such object failed to discharge at one of the primary discharge opportunities.

37. The system of claim 36, wherein the upper circuit and the lower circuit each include a plurality of adjacent tracks.

38. The system of claim 37, wherein said adjacent upper tracks are substantially perpendicular to said adjacent lower tracks.

39. The system of claim 38, wherein the objects are discharged by gravity.

40. The system of claim 39, wherein the induction assembly includes one or more diverging end portions adapted to deliver objects to one or more upper tracks.

41. The system of claim 40, wherein the control system commands an object to divert in the event that the control system cannot plan a drop at any primary discharge location on any track served by said diverging end portions.

42. The system of claim 41, wherein discharges may occur at each of the primary and secondary discharge opportunity throughout the system during the same step.

43. The system of claim 37, further comprising a plurality of receptacles carried by each track and adapted to transport objects to be sorted around said tracks, each receptacle comprising a pair of spaced apart side pieces, a slanted floor portion sandwiched between the side pieces, and a gate portion movably attached to the floor portion and extending outwardly away therefrom.

44. The system of claim 43, wherein an object to be sorted enters the receptacle by sliding down its floor portion.

45. The system of claim 43, wherein an object to be sorted enters the receptacle by sliding down its gate portion.

46. The system of claim 43, wherein an object to be sorted enters the receptacle by sliding down its bottom portion or its gate portion.

47. The system of claim 46, wherein the movable gate portion lowers toward the floor portion to allow an object inside the receptacle to be discharged by sliding down and out of the receptacle.

48. The system of claim 47, wherein the upper circuit receptacles align with the lower circuit receptacles to allow objects to be discharged to slide out of the upper circuit receptacle down into the lower circuit receptacle aligned below.

49. The system of claim 47, wherein the lower circuit receptacles align to discharge objects thereto.

50. An apparatus for receiving and discharging objects to be sorted by a sorting system, the apparatus comprising:

a pair of spaced apart side pieces,

a slanted floor portion sandwiched between the side pieces, and

a gate portion movably attached to the floor portion and extending outwardly away therefrom.

51. The apparatus of claim 50, wherein an object to be sorted enters the apparatus by sliding down the gate portion.

52. The apparatus of claim 50, wherein an object to be sorted enters the apparatus by sliding down the floor portion.

53. The apparatus of claim 50, wherein an object to be sorted enters the apparatus by alternately sliding down the gate portion or the floor portion.

54. The apparatus of claim 53, wherein the movable gate portion moves downwardly to allow the object to slide down and out.

55. A system for sorting objects comprising:

an elevated induction line comprising a longitudinally extending row of conveyor cells adapted to receive and transport from one cell to the next ,one or more objects to be sorted,

said induction-line conveyor cells including one or more accumulation cells, one or more information-gathering cells, one or more divert cells, and a discharge cell,

a plurality of longitudinally extending, upper sorting ellipses positioned adjacent to said induction line and lower in elevation relative thereto,

a plurality of transversely extending, lower sorting ellipses which are oriented beneath said upper sorting ellipses and generally perpendicular thereto,

a plurality of sort destinations positioned generally beneath the upper and lower ellipses and configured to receive objects therefrom,

a control apparatus comprising a control unit and a plurality of sensor arrays,

said information-gathering cell being configured with one of said sensor arrays adapted to determine an object'"'"'s particular sort information including its delivery information, its outer dimensions and its weight,

said sort information-gathering cell sensor array comprising a label reader, a dimensioner, and a scale,

said upper sorting ellipses and said lower sorting ellipses each comprising a plurality of receptacles adapted to receive said objects and transport them to their respective sort destinations

said receptacles comprising a pair of spaced apart, upwardly extending sides, a slanted floor portion sandwiched between the spaced-apart sides, a gate portion movably attached to the floor portion and extending outwardly away therefrom at substantially a right angle thereto,

wherein said information-gathering cell sensor array sends said sort information to said control apparatus for processing and the determination of a path of travel for each object from the induction line to one of the final destinations.

56. A method of sorting objects comprising the steps of:

providing a control unit to control the sort process,

providing a first sorting matrix,

providing a second sorting matrix located below said first sorting matrix,

providing a plurality of collection destinations,

transferring an object to be sorted from the first matrix to the second matrix,

transferring said transferred object from the second matrix to one of the collection destinations,

providing for one or more divert destinations in the event an object cannot be transferred from the first matrix to the second matrix, and

providing for one of more divert destinations in the event an object cannot be transferred from the second matrix to the collection destination.