Order processing system using pick and pass process and method of processing orders using the system

• US 7,110,855 B2
• Filed: 05/30/2003
• Issued: 09/19/2006
• Est. Priority Date: 05/30/2003
• Status: Expired due to Fees

• Current Assignee: SK Daifuku Corporation
• Original Assignee: SK Daifuku Corporation
• Inventors: Leishman, LaMar Sutton
• Primary Examiner(s): Tran, Khoi H.
• Application Number:
  US10/452,552
• Publication Number:
  US 20040243278A1
• Time in Patent Office: 1,208 Days
• Field of Search: 700/216, 700/214, 414/273, 414/268, 414/800
• US Class Current: 700/216
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders

Abstract

A method of processing orders in a warehouse. The method includes the steps of: providing a first pick module in a first pick zone with a plurality of stored items and a first picking station; providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station; releasing a first order including at least one item from each of the first and second pick modules and thereby causing a) the at least one item in the first module to be retrieved and delivered to the first picking station and b) the at least one item in the second pick module be retrieved and delivered to the second picking station; directing a first tote serially to the first and second pick zones; determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote; and determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, picking the at least one item from the second picking station and placing the at least one item from the second picking station in the first tote.

Claims

1. A method of processing orders in a warehouse, the method comprising the steps of:

providing a first pick module in a first pick zone with a first plurality of stored items and a first picking station;

providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station;

releasing a first order including at least one item from each of the first and second pick modules and thereby causing a) the at least one item in the first pick module to be retrieved and delivered to the first picking station and b) the at least one item in the second pick module to be retrieved and delivered to the second picking station;

directing first and second totes simultaneously and serially to the first and second pick zones;

determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote;

determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, picking the at least one item from the second picking station and placing the at least one item from the second picking station in the first tote;

releasing a second order including at least a third item from one of the first and second pick modules and thereby causing the third item from the one of the first and second pick modules to be retrieved and delivered to the picking station associated with the one of the first and second pick modules; and

determining whether the second tote is at the pick zone associated with the one of the first and second pick modules and, upon determining that the second tote is at the pick zone associated with the one of the first and second pick modules, picking the third item from the picking station associated with the one of the first and second pick modules and placing the third item from the picking station associated with the one of the first and second pick modules in the second tote,

wherein the step of releasing a first order comprises downloading an order for processing at each of the first and second pick modules,

wherein the step of providing a first pick module comprises providing a first pick module with first automated equipment comprising a first carousel, the first automated equipment receiving a first processing command in response to the downloading of the first order, and the step of causing the at least one item in the first pick module to be retrieved and delivered to the first picking station comprises causing the first carousel to retrieve and deliver the at least one item in the first pick module to the first picking station as an incident of receiving the first processing command.

2. The method of processing orders in a warehouse according to claim 1 wherein the step of releasing a second order comprises downloading the second order for processing at the first pick module and thereby causing the first automated equipment to receive a second processing command and, as an incident thereof, to retrieve and deliver the third item in the first pick module to the first picking station, wherein the first automated equipment delivers the at least one item and the third item from the first pick module to the first picking station on a first-in-first-out basis.

3. The method of processing orders in a warehouse according to claim 1 wherein the step of providing a second pick module comprises providing a second pick module with second automated equipment that receives a second processing command in response to the downloaded order and the step of causing the at least one item in the second pick module to be retrieved and delivered to the second picking station comprises causing the second automated equipment to retrieve and deliver the at least one item in the second pick module to the second picking station as an incident of receiving the second processing command.

4. The method of processing orders in a warehouse according to claim 1 wherein the step of directing the first tote to the first and second pick zones comprises directing the first tote on a conveyor, comprising at least one of a) a belt, and b) a plurality of rollers, to the first and second pick zones.

5. The method of processing orders in a warehouse according to claim 1 wherein the step of directing the first tote to the first and second pick zones comprises directing the first tote from the first pick zone to the second pick zone after the at least one item from the first pick zone is placed in the first tote.

6. The method of processing orders in a warehouse according to claim 1 further comprising the step of assigning a separate operator to each of the first and second zones to manually place the at least one item at the first picking station in the first tote with the first tote at the first pick zone and the at least one item at the second picking station in the first tote with the first tote at the second pick zone.

7. The method of processing orders in a warehouse according to claim 1 wherein the step of providing a first module with first automated equipment comprises providing a first module with first automated equipment that is at least one of:

a) a two aisle automated storage and retrieval system;

b) a two pod horizontal

carousel;

c) a three pod horizontal carousel; and

d) a vertical carousel.

8. The method of processing orders in a warehouse according to claim 1 wherein the step of providing a second pick module comprises providing a second pick module with second automated equipment which is capable of retrieving at least one item in the second pick module.

9. The method of processing orders in a warehouse according to claim 6 wherein the step of providing a second pick module with second automated equipment comprises providing a second pick module with second automated equipment comprising a second carousel.

10. The method of processing orders in a warehouse according to claim 1 wherein the steps of picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote comprises manually picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote.

11. A method of processing orders in a warehouse, the method comprising the steps of:

providing a first pick module in a first pick zone with a first plurality of stored items and a first picking station;

providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station;

releasing a first order including at least one item from each of the first and second pick modules and thereby causing a) the at least one item in the first pick module to be retrieved and delivered to the first picking station and b) the at least one item in the second pick module to be retrieved and delivered to the second picking station;

directing a first tote serially to the first and second pick zones;

determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote; and

determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, picking the at least one item from the second picking station and placing the at least one item from the second picking station in the first tote,

wherein the step of releasing an order comprises downloading an order for processing at each of the first and second pick modules,

wherein the step of providing a first pick module comprises providing a first pick module with first automated equipment that receives a first processing command in response to the downloading of the first order,

wherein the step of causing the at least one item in the first pick module to be retrieved and delivered to the first picking station comprises causing the first automated equipment to retrieve and deliver the at least one item in the first pick module to the first picking station as an incident of receiving the first processing command;

releasing a second order including at least another item from the first pick module by downloading the second order for processing at the first pick module and thereby causing the first automated equipment to receive a second processing command and, as an incident thereof, to retrieve and deliver the at least another item in the first pick module to the first picking station

directing a second tote to the first pick zone;

determining whether the second tote is at the first pick zone; and

upon determining that the second tote is at the second pick zone, picking the at least another item from the first picking station and placing the at least another item from the first picking station in the second tote,

wherein the steps of directing the first and second totes to the first pick zone comprise causing the first and second totes to simultaneously reside at the first pick zone and the steps of placing the at least one item in the first tote and the at least another item in the second tote comprise placing the at least one item and the at least another item in the respective totes in the sequence in which the at least one item and the at least another item are delivered to the first picking station.

12. The method of processing orders in a warehouse according to claim 11 wherein the first automated equipment delivers the at least one item and the at least another item from the first pick module to the first picking station on a first-in-first-out basis.

13. A method of processing orders in a warehouse, the method comprising the steps of:

providing a first pick module in a first pick zone with a first plurality of stored items and a first picking station;

providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station;

releasing a first order including at least one item from each of the first and second pick modules and thereby causing a) the at least one item in the first pick module to be retrieved and delivered to the first picking station and b) the at least one item in the second pick module to be retrieved and delivered to the second picking station;

directing a first tote serially to the first and second pick zones;

determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote;

determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, picking the at least one item from the second picking station and placing the at least one item from the second picking station in the first tote,

wherein the step of releasing an order comprises downloading an order for processing at each of the first and second pick modules,

wherein the step of providing a first pick module comprises providing a first pick module with first automated equipment that receives a first processing command in response to the downloading of the first order,

wherein the step of causing the at least one item in the first pick module to be retrieved and delivered to the first picking station comprises causing the first automated equipment to retrieve and deliver the at least one item in the first pick module to the first picking station as an incident of receiving the first processing command;

releasing a second order including at least another item from the first pick module by downloading the second order for processing at the first pick module and thereby causing the first automated equipment to receive a second processing command and, as an incident thereof, to retrieve and deliver the at least another item in the first pick module to the first picking station

directing a second tote to the first pick zone;

determining whether the second tote is at the first pick zone; and

upon determining that the second tote is at the second pick zone, picking the at least another item from the first picking station and placing the at least another item from the first picking station in the second tote,

said method further comprising the step of directing the first tote and the second tote from the first zone to the second zone after the at least one item from the first pick zone is placed in the first tote and after the at least another item from the first zone is placed in the second tote.

14. The method of processing orders in a warehouse according to claim 13 wherein the first automated equipment delivers the at least one item and the at least another item from the first pick module to the first picking station on a first-in-first-out basis.

15. A method of processing orders in a warehouse, the method comprising the steps of:

providing a first pick module in a first pick zone with a first plurality of stored items and a first picking station;

providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station;

releasing a first order including at least one item from each of the first and second pick modules and thereby causing a) the at least one item in the first pick module to be retrieved and delivered to the first picking station and b) the at least one item in the second pick module to be retrieved and delivered to the second picking station;

directing first and second totes simultaneously and serially to the first and second pick zones;

determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, manually picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote;

releasing a second order including at least a third item from one of the first and second pick modules and thereby causing the third item from the one of the first and second pick modules to be retrieved and delivered to the picking station associated with the one of the first and second pick modules;

determining whether the second tote is at the pick zone associated with the one of the first and second pick modules and, upon determining that the second tote is at the pick zone associated with the one of the first and second pick modules, manually picking the third item from the picking station associated with the one of the first and second pick modules and placing the third item from the picking station associated with the one of the first and second pick modules in the second tote; and

determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, manually picking the at least one item from the second picking station and placing the at least one item from the second .picking station in the first tote.

16. The method of processing orders in a warehouse according to claim 15 further comprising the step of assigning an identification to each tote in the first order before releasing the first order.

17. The method of processing orders in a warehouse according to claim 16 wherein the step of assigning an identification comprises assigning a first bar code identification to the first tote indicative of the first order.

18. The method of processing orders in a warehouse according to claim 17 wherein the step of determining whether the first tote is at the first zone comprises scanning the first bar code identification on the first tote at the first pick zone.

19. The method of processing orders in a warehouse according to claim 18 further comprising the step of determining at the first zone what item or items are to be placed from the first module into the first tote by scanning the first bar code identification.

20. A method of processing orders in a warehouse, the method comprising the steps of:

a) providing a first pick module in a first pick zone with a first plurality of stored items and a first picking station;

b) providing a second pick module in a second pick zone with a second plurality of stored items and a second picking station;

c) releasing a first order including at least one item from each of the first and second pick modules and thereby causing i) the at least one item in the first pick module to be retrieved and delivered to the first picking station and ii) the at least one item in the second pick module to be retrieved and delivered to the second picking station;

d) directing a first tote serially to the first and second pick zones;

e) determining whether the first tote is at the first pick zone and, upon determining that the first tote is at the first pick zone, picking the at least one item from the first picking station and placing the at least one item from the first picking station in the first tote;

f) determining whether the first tote is at the second pick zone and, upon determining that the first tote is at the second pick zone, picking the at least one item from the second picking station and placing the at least one item from the second picking station in the first tote;

determining if more than one tote is required for the first order before releasing the first order; and

if more than one tote is required for the first order, breaking the first order into sub-orders that are each processed by carrying out steps a)–

f).