Semi-automated integrated sort system

• US 5,794,789 A
• Filed: 12/13/1995
• Issued: 08/18/1998
• Est. Priority Date: 12/13/1995
• Status: Expired due to Fees

• Current Assignee: John B. Payson, William H. Payson
• Original Assignee: John B. Payson, William H. Payson
• Inventors: Payson, John B., Payson, William H.
• Primary Examiner(s): Bollinger, David H.
• Application Number:
  US08/571,805
• Time in Patent Office: 979 Days
• Field of Search: 209/702, 209/703, 209/900, 209/942, 209/549, 209/546, 209/583, 209/584, 209/44.4
• US Class Current: 209/549
• CPC Class Codes: B07C 3/00 Sorting according to destination collating the pages of a book B42C1/00
• CPC Class Codes: B07C 7/00 Sorting by hand only e.g. of mail
• CPC Class Codes: B07C 7/005 Computer assisted manual sorting, e.g. for mail
• CPC Class Codes: Y10S 209/942 Operator selects destination of item

Abstract

Inter-related devices and methods to increase sort productivity, provide for the ready integration of shipment data into a central computer system, permit centralized management and control over multiple autonomous sort operations, and integrate materials handling of the sorted shipments into the sort process. The devices and methods provide the foundation for an integrated shipment and information processing system without the complexity of automated equipment or the limitations of manual operations. The semi-automated integrated sort system has an array of chutes that flow shipments into containers or bins. The entrance to each chute is blocked by a computer-controlled gate. Detectors are placed in the chutes to detect shipments and monitor container/bin status. The chute gates, sensors, and other sort-related apparatus are connected to a computer. Automated or semi-automated data entry equipment connected to the computer provides the necessary data input. If centralized data collection or shipment management is required, the computer is connected to a central computer or computer network.

Claims

1. A package sort system comprising:

a sorter input work station from which packages in a package stream are supplied to a sorter person;

a plurality of manual ports adjacent the sorter input work station for the sorter person to manually insert packages from the sorter input work station for further processing;

a plurality of gates, each associated with at least a corresponding one or more of the manual ports, the gates individually movable between a closed position blocking access to corresponding manual ports and an open position allowing access to corresponding manual ports; and

a computer holding destination information relative to intended destinations of packages in the package stream at the sorter input work station, the computer operably connected to the plurality of gates for allowing access to a particular manual port based on the destination information for a particular package being manually sorted by the sorter person at a given time such that the sorter person may manually insert that package in particular manual port.

2. The package sort system of claim 1 further comprising a plurality of gate openers, each operably connected to a corresponding one of the plurality of gates for opening that gate and operably connected to the computer, wherein the computer is operable to send opening signals to the plurality of gate openers such that the gates are opened dependent on the destination information for a particular package being manually sorted by the sorter person at a given time.

3. The package sort system of claim 1 further comprising a plurality of gate locks, each operably connected to a corresponding one of the plurality of gates for locking that gate and operably connected to the computer, wherein the computer is operable to send unlocking signals to the plurality of gate locks such that the gates are unlocked dependent on the destination information for a particular package being manually sorted by the sorter person at a given time such that the sorter person can manually open a correct one of the gates for the particular package.

4. The package sort system of claim 1 further comprising a plurality of gate locks, each operably connected to a corresponding one of the plurality of gates for locking that gate and operably connected to the computer, and a plurality of gate sensors, each corresponding to one of the plurality of gates and sensing when that gate is moved, and wherein the computer is operable to control the plurality of gate locks such that each gate is locked responsive to movement sensed by its gate sensor and dependent on the destination information for a particular package being manually sorted by the sorter person at a given time such that the sorter person can manually open a correct one of the plurality of gates for the particular package.

5. The package sort system of claim 1 further comprising:

a plurality of passageways, each having a corresponding outlet and each passageway corresponding to a corresponding one of the plurality of manual ports and communicating therewith such that a package inserted into a manual port proceeds in the corresponding passageway to the corresponding outlet;

a first cart at the outlets of the passageways, the first cart having bins, each bin receiving packages from a corresponding outlet and corresponding to a corresponding one of the manual ports such that packages inserted into a manual port proceed into the corresponding bin; and

a second cart having bins and constructed as recited for the first cart; and

wherein the first cart is movable from the outlets of the passageways and the second cart is movable into a location previously occupied by the first cart such that it may assume the receiving of packages from the outlets as previously performed by the first cart.

6. The package sort system of claim 1 further comprising:

an induction work station into which packages of the package stream go in an order, the computer storing information indicating the order of the packages going into the induction work station; and

a sort sensor at the sorter input work station and operably connected to provide a signal to the computer when a particular package is ready to be sorted; and

wherein the sorter input work station is operably connected to the induction work station such that packages from the induction work station proceed in order to the sorter input work station and from which packages in the package stream are supplied to a sorter for sorting, and wherein the computer controls the gates to direct sorting of a particular package responsive to the destination location of the package as determined from the order of packages stored by the computer.

7. The package sort system of claim 6 further comprising a bar code reader adjacent the induction work station and operable to input destination information to the computer based on the reading of bar code on packages.

8. The package sort system of claim 6 further comprising an information input interface operably connected to the computer for entering destination information to the computer, and wherein the input interface is selected from the group consisting of:

an optical reader operably connected to the computer such that the computer performs optical character recognition of alphanumeric characters on packages;

a microphone operably connected to the computer such that a person observing packages announces destination information, which is stored in the computer after voice recognition of the announced destination information; and

a manual input device such that a person observing packages manually inputs destination information for storage in the computer.

9. The sort system of claim 1 wherein each manual port is an entry point for a corresponding passageway, which passageway is selected from the group consisting of:

a chute and a conveyer, wherein individual passageways are normally blocked by exit gates, which can be opened by a human operator to empty the contents of the passageways into containers.

10. The sort system of claim 1, where in the gates are normally closed, and are physically opened by the system to provide access to the ports.

11. The sort system of claim 1, wherein the gates are normally locked during operation, and are physically unlocked by the system to provide access to the ports.

12. The sort system of claim 1 further comprising port sensors, and wherein the operation of the gate is determined by a combination of data from the port sensors, and the item information.

13. The sort system of claim 12, wherein the gates are normally unlocked, and wherein, if the system detects that an item being inserted into a port, and if the item in question is not supposed to be inserted into that port, the system will lock the gate on that port to prevent the item from entering the port.

14. The sort system in claim 1 further comprising a computer system, such as a computer network, receiving information from multiple computers at geographical separated locations where sorting is being performed.

15. The sort system in claim 14 wherein the computer system forwards information to the geographical separated locations to alter or adjust system operation at the locations.

16. The sort system in claim 15, wherein the computer system is used to change the assignment of specific item destinations to specific ports, or to provide instructions on how a specific package should be processed.

17. The sort system in claim 1 further comprising data entry means connected to the computer for entering destination information and including any one or more of the following:

bar-code reader, optical character reader, remote data encoding, voice recognition system, manual keyboard entry, or computer-assisted keyboard entry.

18. The sort system in claim 14 wherein the data entry means include electronic data transfer from another device, wherein the inbound item is processed in such a fashion that destination data entered on, produced by, or forwarded to another device, and then transfered from that device to the sorting system, can be associated with a specific item.

48. A shipment data entry station comprising:

input means for entering information relative to an item;

a printer capable of printing machine-readable data;

either a sort system similar to that outlined in claim 1, or a means to associate the entered item data with the item at a subsequent process, even if other item'"'"'s data is entered between the time the specific item(s) awaiting processing'"'"'s data is input, and the time the specific item(s) awaiting processing are actually sorted; and

wherein the data is associated with a specific item by using a bin that maintains the items in a known order, which has sensors located at the entrance and exit of the bin able to detect the insertion or removal of an item; and

wherein the data entry means include any of the following;

a bar-code reader, optical character recognition, an electronic scale, voice recognition, remote data encoding, or a keyboard; and

wherein the data entry means include computer-assisted manual entry, wherein the computer will look-up the item destination by comparing a limited number of operator input keystrokes to a database, and selecting the possible item destination(s) that contain those keystrokes, and wherein, in the event that multiple item destinations are possible based on the data entered, the system will supply the human-operator with a brief list of possible destinations and ask the human-operator to select the appropriate destination;

and further comprising one or more holding bins, each capable of holding one or more items, wherein a directing means can direct a human operator to insert or withdraw an item from a given holding bin; and

wherein the directing means includes lights of two or more colors located at or near the entrance to the holding bin, with one color of light corresponding to an insert item request, and another color of light corresponding to a withdraw item request, and wherein the entrance to the holding bin is equipped with sensors to measure when an item is inserted or withdrawn from the bin.

19. A package sort system comprising:

a sorter input work station from which packages in a package stream are supplied to a sorter person;

a plurality of manual ports adjacent the sorter input work station for the sorter person to manually insert packages from the sorter input work station for further processing;

a plurality of visual indicators, each associated with at least a corresponding one of the manual ports, the visual indicators indicating to the sorter person which of plurality of manual ports a package should be inserted in;

a plurality of port sensors operable to sense which of the plurality of manual ports a package is inserted into; and

a computer holding destination information relative to intended destinations of packages in the package stream at the sorter input work station, the computer operably connected to the plurality of port sensors such that the computer receives a signal when a package is misplaced into an incorrect port; and

a downstream location downstream from the plurality of ports such that packages inserted into the plurality of ports proceed to the downstream location; and

wherein the computer is operable to track the misplaced package until it reaches the downstream location such that the misplacement of the misplaced package can be corrected at the downstream location.

20. The package sort system of claim 19 wherein the computer is operable to record a performance rate for a given sorter person, the performance rate dependent on the accuracy of the sorter person in inserting the packages into proper manual ports.

21. The package sort system of claim 19 further comprising:

an induction work station into which packages of the package stream go in an order, the computer storing information indicating the order of the packages going into the induction work station; and

a sort sensor at the sorter input work station and operably connected to provide a signal to the computer when a particular package is ready to be sorted; and

wherein the sorter input work station is operably connected to the induction work station such that packages from the induction work station proceed in order to the sorter input work station and from which packages in the package stream are supplied to a sorter for sorting, and wherein the computer directs sorting of a particular package responsive to the destination location of the package as determined from the order of packages stored by the computer.

22. The package sort system of claim 21 further comprising an information input interface operably connected to the computer for entering destination information to the computer, and wherein the input interface is selected from the group consisting of:

a bar code reader adjacent the induction work station and operable to input destination information to the computer based on the reading of bar code on packages;

an optical reader operably connected to the computer such that the computer performs optical character recognition of alphanumeric characters on packages;

a microphone operably connected to the computer such that a person observing packages announces destination information, which is stored in the computer after voice recognition of the announced destination information; and

a manual input device such that a person observing packages manually inputs destination information for storage in the computer.

23. The package sort system of claim 22 wherein the input interface includes at least two members of the recited group.

24. A package sort system comprising:

a sorter input work station from which packages in a package stream are supplied to a sorter person;

a plurality of manual ports adjacent the sorter input work station for the sorter to manually insert packages from the sorter input work station for further processing;

a plurality of indicators, each associated with at least a corresponding one or more of the manual ports, the indicators indicating to the sorter person which of the manual ports packages should be inserted into;

a computer holding destination information relative to intended destinations of packages in the package stream at the sorter input work station, the computer operably connected to the plurality of indicators for controlling them based on the destination information for a particular package being manually sorted by the sorter person at a given time such that the sorter person manually inserts that package in a particular manual port;

a plurality of passageways, each having a corresponding outlet and each passageway corresponding to a corresponding one of the plurality of manual ports and communicating therewith such that a package inserted into a manual port proceeds in the corresponding passageway to the corresponding outlet;

a plurality of at least partially confined holding zones at the outlets of the passageways, there being a distinct holding zone at each outlet; and

wherein the holding zones are movable relative to the outlets such that an empty holding zone can be replaced for a full holding zone without moving the corresponding outlet and the corresponding passageway.

25. The package sort system of claim 24 further comprising first and second carts, and wherein each of the holding zones is one of a plurality of bins on the first and second carts, each bin receiving packages from a corresponding outlet and corresponding to a corresponding one of the manual ports such that packages inserted into a manual port proceed into the corresponding bin;

and wherein the first cart is movable from the outlets of the passageways and the second cart is movable into a location previously occupied by the first cart such that it may assume the receiving of packages from the outlets as previously performed by the first cart.

26. The package sort system of claim 25 further comprising:

a plurality of transfer sensors operably connected to the computer and sensing when a package is transferred from one of the outlets to the corresponding bin; and

an induction work station into which packages of the package stream go in an order, the computer storing information indicating the order of the packages going into the induction work station, the induction work station is operably connected to the sorter input work station such that packages from the induction work station proceed in order to the sorter input work station; and

a sort sensor at the sorter input work station and operably connected to provide a signal to the computer when a particular package is ready to be sorted; and

wherein the computer stores information corresponding to an indication of the transfer of each package and wherein the computer directs sorting of a particular package responsive to the destination location of the package as determined from the order of packages stored by the computer by controlling the indicators.

27. The package sort system of claim 26 further comprising an information input interface operably connected to the computer for entering destination information to the computer, and wherein the input interface is selected from the group consisting of:

a bar code reader adjacent the induction work station and operable to input destination information to the computer based on the reading of bar code on packages;

an optical reader operably connected to the computer such that the computer performs optical character recognition of alphanumeric characters on packages;

a microphone operably connected to the computer such that a person observing packages announces destination information, which is stored in the computer after voice recognition of the announced destination information; and

a manual input device such that a person observing packages manually inputs destination information for storage in the computer.

28. The package sort system of claim 25 wherein the indicators are visual indicators and further comprising:

a plurality of port sensors operable to sense which of the plurality of manual ports a package is inserted into; and

wherein the computer is operably connected to the plurality of port sensors such that the computer receives a signal when a package is misplaced into an incorrect port; and

wherein the computer is operable to record a performance rate for a given sorter person, the performance rate dependent on the accuracy of the sorter person in inserting the packages into proper manual ports.

29. The package sort system of claim 28 further comprising:

a downstream location downstream from the plurality of ports such that packages inserted into the plurality of ports proceed to the downstream location; and

wherein the computer is operable to track the misplaced package until it reaches the downstream location such that the misplacement of the misplaced package can be corrected at the downstream location.

30. The package sort system of claim 24 further comprising a plurality of gates, each associated with at least a corresponding one or more of the manual ports, the gates individually movable between a closed position blocking access to corresponding manual ports and an open position allowing access to corresponding manual ports, and wherein the indicators indicate which manual port a particular package should be inserted into by affecting the gates;

and wherein the indicators are selected from the group consisting of;

gate openers which open the gates as appropriate for insertion of the packages, the opening of a gate thus indicating which manual port should be used; and

gate locks which lock and unlock the gates as appropriate for insertion of the packages, an unlocked condition of a gate thus indicating which manual port should be used and a locked condition of a gate thus indicating that the corresponding manual port should not be used.

31. The sort system in claim 24, further comprising one or more sensor or input devices located in or near the holding zones and operable to determine when the holding zones are full.

32. The sort system in claim 31, wherein the sensors are used with specially designed containers, such that an external signal emitter attached to the sort system can transmit a signal through the container, or through an opening in the container, to an external signal detector.

33. The sort system in claim 31 further comprising indicators that identify holding zones that need to be replaced.

34. The sort system in claim 31 wherein a sensor or input device is used to detect when an individual holding zone is replaced.

35. The sort system in claim 24, wherein a blocking device is disposed near the outlet of each passageway and assumes a blocking mode if the holding zone has been removed or is currently being replaced, the blocking device will prevent packages from exiting the outlet until the holding zone is replaced.

36. The sort system in claim 35 where the system is capable of associating destination data with specific items that are awaiting sorting, even if other items destination data is entered between the time the specific item(s) awaiting sorting destination data is input, and the time the specific item(s) awaiting sorting are actually sorted, and wherein this is achieved by using a bin that maintains the items in a known order, which has sensors located at the entrance and exit of the bin able to detect the insertion or removal of an item.

37. A package sort system comprising:

a computer holding destination information relative to intended destinations of packages in the package stream which are to be sorted;

an induction work station into which packages of the package stream go in an order, the computer storing information indicating the order of the packages going into the induction work station;

a sorter input work station operably connected to the induction work station such that packages from the induction work station proceed in order to the sorter input work station and from which packages in the package stream are supplied to a sorter person for sorting;

a plurality of manual ports adjacent the sorter input work station for the sorter person to insert packages from the sorter input work station for further processing; and

a sort sensor at the sorter input work station and operably connected to provide a signal to the computer when a particular package is ready to be sorted; and

wherein the computer is operable to direct sorting of the particular package responsive to the destination location of the package as determined from the order of packages stored by the computer.

38. The package sort system of claim 37 further comprising:

a plurality of indicators, each associated with at least a corresponding one or more of the ports, the indicators indicating to the sorter person which of the ports packages should be inserted into;

wherein the computer is operably connected to the indicators such that it directs sorting of the packages by controlling the indicators responsive to the destination location of the package as determined from the order of packages as stored by the computer.

39. The sort system in claim 38, wherein the indicators means include two or more differentiable means of directing the sort, so that the system can direct multiple human sorters at the same time using a common set of manual ports by directing each of the manual operators using a unique directing method.

40. The sort system in claim 39, wherein the indicators comprise lights of at least two different colors, one color for each sorter person.

41. The sort system in claim 38, wherein the indicators are audible.

42. The package sort system of claim 37 further comprising a plurality of gates, each associated with at least a corresponding one or more of the manual ports, the gates individually movable between a closed position blocking access to corresponding manual ports and an open position allowing access to corresponding manual ports, and wherein the indicators indicate which manual port a particular package should be inserted into by affecting the gates;

and wherein the indicators are selected from the group consisting of;

gate openers which open the gates as appropriate for insertion of the packages, the opening of a gate thus indicating which manual port should be used; and

gate locks which lock and unlock the gates as appropriate for insertion of the packages, an unlocked condition of a gate thus indicating which manual port should be used and a locked condition of a gate thus indicating that the corresponding manual port should not be used.

43. The package sort system of claim 37 wherein the indicators are lights which are located immediately adjacent to the manual ports and which light up to indicate which port a particular package should be inserted into.

44. The package sort system of claim 37 further comprising an information input interface at the induction work station and operably connected to the computer for entering destination information to the computer, and wherein the input interface is selected from the group consisting of:

a bar code reader adjacent the induction work station and operable to input destination information to the computer based on the reading of bar code on packages;

an optical reader operably connected to the computer such that the computer performs optical character recognition of alphanumeric characters on packages;

a microphone operably connected to the computer such that a person observing packages announces destination information, which is stored in the computer after voice recognition of the announced destination information; and

a manual input device such that a person observing packages manually inputs destination information for storage in the computer.

45. The package sort system of claim 44 wherein the input interface includes at least two members of the recited group.

46. The package sort system of claim 44 further comprising:

a plurality of passageways, each having a corresponding outlet and each passageway corresponding to a corresponding one of the plurality of manual ports and communicating therewith such that a package inserted into a manual port proceeds in the corresponding passageway to the corresponding outlet;

a first cart at the outlets of the passageways, the first cart having bins, each bin receiving packages from a corresponding outlet and corresponding to a corresponding one of the manual ports such that packages inserted into a manual port proceed into the corresponding bin; and

a second cart having bins and constructed as recited for the first cart; and

wherein the first cart is movable from the outlets of the passageways and the second cart is movable into a location previously occupied by the first cart such that it may assume the receiving of packages from the outlets as previously performed by the first cart.

47. The package sort system of claim 46 further comprising:

a plurality of transfer sensors operably connected to the computer and sensing when a package is transferred from one of the outlets to the corresponding bin; and

wherein the computer stores information corresponding to an indication of the transfer of each package.

49. A method of sorting, with the aid of a sort assisting system, said sort assisting system having:

a plurality of manual ports;

a plurality of chutes, conveyers, or other material handling devices;

input means for receiving information relative to the intended destination of an item;

directing means to alert the sort person of the appropriate manual port; and

a data storage system to monitor and record system operating data;

said method comprising;

a. causing the item data to be input or associated with the item;

b. placing said particular item in one of said manual ports as directed by the system based on the item data; and

wherein the sort assisting system also comprises a plurality of sensors able to detect when an item is placed in the correct (or incorrect) manual port, and wherein this data is used to record the human sort operators'"'"' overall productivity and accuracy; and

wherein the sort assisting system also comprises an interface with a separate computer system, and wherein, in the event of a mis-sort, the sort assisting system will alert the separate computer system, such that the separate computer system can direct someone to correct the mis-sort at a downstream location; and

wherein the sort assisting system also comprises an interface with a separate computer system, and wherein, the sort assisting system forwards the item information to the separate computer system, such that the data may be used for other purposes not related to sorting the package, such as billing; and

wherein the sort assisting system also receives information from the central computer system, such that the central computer system can instruct the sort operator to provide an individual item with special processing, such as in-transit forwarding, that could not be inferred from the item'"'"'s own data alone; and

wherein the sort assisting system also comprises one or more holding bins equipped with directing lights and sensors, and wherein, if the item cannot be efficiently processed at that time (such as if the destination container is currently full or being replaced or if the system requires more time to determine the appropriate destination), the system will direct the operate to insert the item into the holding bin, and will stop directing the operator to do so when the system detects that the operator has inserted a package, at a later time, when the system is able to efficiently process the item in the holding bin, the system will then direct the operator to withdraw the item from the holding bin, and will then use the information associated with that item-even if data for other items has been entered in the intervening time-to direct the processing of that item;

wherein the sort assisting system also functions as an item induction station, and also comprises a computer printer and one or more data input means include both automated and non-automated/semi-automated data entry; and

the method comprising;

(a) entering item data using automated data entry

(b) reentering or using a back-up data entry method if the automated data entry is unsuccessful

(c) applying machine readable item data to the item if the item lacks such data

(d) sorting the item as described above in the first-mentioned a and b.