Replenishment unit adjustment system and replenishment unit adjustment method

Abstract

To provide a replenishment unit adjustment system suitable for preventing a decrease in work efficiency for replenishing a cargo used in sorting work.SOLUTION: In a replenishment unit adjustment system 1, a cargo sorting device 7 takes out cargo from a cargo storage unit 27 and sorts it by type according to sorting order data. In a replenishment analysis processing device 11, a replenishment point determination processing unit 31 determines whether or not each cargo in the sorting order data is a replenishment point. A partial extraction processing unit 33 extracts the number of cargo to be analyzed in the sorting order data, starting with cargo at the replenishment point. A priority analysis processing unit 35 performs priority analysis on the number of cargo to be analyzed that have been extracted by the partial extraction processing unit 33. A replenishment unit determination processing unit 37 determines a replenishment unit according to priority of a rank of a type of cargo that is the replenishment point through the priority analysis. A cargo replenishment device 13 replenishes cargo of a replenishment unit for the type of cargo at the replenishment point to the cargo storage unit 27.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a replenishment unit adjustment system and a replenishment unit adjustment method, and in particular to a replenishment unit adjustment system in which a luggage sorting device picks out multiple luggage from a luggage storage unit and sorts them by type using sorting order data in order to ship them. [Background technology]

[0002] FIG. 7 is a block diagram showing an example of the configuration of a conventional replenishment unit adjustment system.

[0003] The replenishment unit adjustment system 51 includes an allocation order determination processing device 53, an allocation order storage device 55, a luggage allocation device 57, a shipping processing device 59, a replenishment analysis processing device 61, a luggage replenishment device 63, a pallet transport device 65, a pallet work shelf 71, a pallet storage 72, an empty pallet storage section 73, and a luggage storage section 77.

[0004] The replenishment analysis processing device 61 includes a replenishment point determination processing unit 81, a replenishment unit determination processing unit 87, and a replenishment unit / replenishment timing storage device 89. The replenishment analysis processing device 61 does not perform processing according to the sorting status actually performed by the baggage sorting device 57, but performs information processing on data.

[0005] The replenishment unit adjustment system 51 has a luggage sorting device 57 that sorts multiple luggage stored in a luggage storage section 77 according to each destination, and a shipping processing device 59 that processes the luggage to send it to each destination.

[0006] A replenishment reference number is set for each type of luggage. When luggage is removed from the luggage storage section 77, the inventory quantity of the removed luggage type in the luggage storage section 77 decreases. When the inventory quantity of any type in the luggage storage section 77 falls below the replenishment reference number, the pallet transport device 65 removes the pallet 75 to be processed of that type from the pallet work shelf 71. The luggage replenishment device 63 removes one or more layers of luggage from the pallet 75 to be processed removed by the pallet transport device 65, disassembles the luggage, and replenishes it in the luggage storage section 77 as luggage in shipping form. Disassembling luggage from a pallet to prepare luggage in shipping form is called "depalletizing processing."

[0007] If any type of luggage runs out in the luggage storage section 77, the luggage sorting device 57 will be unable to sort it. In particular, when sorting is performed at high speed, the inventory quantity decreases rapidly. Since there is a limit to the number of luggage that can be stored in the luggage storage section 77, it is required that luggage with a large amount of luggage to be sorted is given priority and stored in large quantities in the luggage storage section 77, and luggage with a small amount of luggage to be sorted is stored in small quantities in the luggage storage section 77.

[0008] As described in Patent Document 1, the types of cargo to be shipped are ranked using priority analysis (also known as Pareto analysis, ABC analysis, etc.). Priority analysis is an analytical framework based on the Pareto principle, which ranks indicators (sales, cost, inventory, etc.) in descending order to determine and manage priorities.

[0009] 8, the sorting order determination processing device 53 determines the sorting order of each package and generates sorting order data indicating the sorting order of each package in order to sort multiple packages to multiple destinations and send them to each destination. The sorting order storage device 55 stores the sorting order data.

[0010] The luggage sorting device 57 refers to the sorting order data and sorts the multiple luggage stored in the luggage storage unit 77 to the multiple destinations in accordance with each destination. The shipping processing device 59 performs processing for sending to each destination.

[0011] A specific example of the process for determining the replenishment unit will be described with reference to Figure 8. A replenishment unit is the replenishment of some or all of the layers of one pallet. Therefore, the maximum is to replenish all layers of one pallet, and the minimum is to replenish one layer. In this example, the product types are α and β. Both products α and β are stacked in two layers on the pallet, with three packages in each layer. Therefore, the number of packages that the package replenishment device 63 converts into shipping packages by depalletizing the target pallet 75 is three for one layer and six for two layers.

[0012] Assume that the sorting order determination processor 53 decides to sort 10 packages of type α, followed by 10 packages of type β. Figure 8(a) shows the sorting order data. The order in which each type is sorted is specified from left to right.

[0013] The luggage storage section 77 has three shelves (see Figures 8(b) to (p)). Each shelf can hold up to four luggage items as inventory. The first shelf (the highest shelf in Figure 8) holds luggage of type α. The third shelf (the lowest shelf in Figure 8) holds luggage of type β. The second shelf (the shelf located between the first and third shelves in Figure 8) is shared by luggage of type α and type β, and is taken out with priority over the first and third shelves. In the initial state, the luggage storage section 77 contains three items of type α and three items of type β.

[0014] In the replenishment point determination processing unit 81, the replenishment reference number is set to 1 for both product types α and β. According to the priority analysis, the number of shipments of product types α and β is the same, and they are on an equal footing, with no preference being given to either. Therefore, the replenishment unit for products that are below the replenishment reference number is set to the same. If two levels (six units) were replenished for both, they would overflow from the luggage storage unit 77, making it impossible to sort them. Therefore, in this example, the replenishment unit determination processing unit 87 sets the replenishment unit to one level (three units) for both.

[0015] Fig. 8(b) shows the initial state of the luggage storage unit 77. Referring to Fig. 8(b), the replenishment point determination processing unit 81 processes the first and second luggage. The type of the first and second luggage is type α. The replenishment point determination processing unit 81 determines that the type α does not correspond to a replenishment point because there are two or more items of type α.

[0016] Figure 8(c) shows a state in which two packages of type α from the first tier have been removed, leaving one package. The replenishment point determination processor 81 determines that the third package of type α is a replenishment point because the number of packages of type α is less than the replenishment standard number of one. The replenishment unit determination processor 87 determines that the replenishment unit of type α to be replenished corresponding to the third package is one tier (three packages). Figure 8(d) shows a state in which three packages of type α have been replenished from the state of Figure 8(c).

[0017] 8(d), the replenishment point determination processing unit 81 processes the fourth and fifth packages. The product type of the fourth and fifth packages is product type α. The replenishment point determination processing unit 81 determines that the product type α does not correspond to a replenishment point because there are two or more packages of product type α.

[0018] Figure 8(e) shows a state in which three packages of type α have been removed from the first tier, leaving only one. The replenishment point determination processor 81 determines that the sixth package of type α is a replenishment point because there is only one package of type α. The replenishment unit determination processor 87 determines that the replenishment unit of type α to be replenished corresponding to the sixth package is one tier (three packages). Figure 8(f) shows a state in which three packages of type α have been replenished from the state of Figure 8(e).

[0019] 8(f), the replenishment point determination processing unit 81 processes the seventh and eighth packages. The product type of the seventh and eighth packages is product type α. The replenishment point determination processing unit 81 determines that the package is not a replenishment point because there are two or more packages of product type α.

[0020] Figure 8(g) shows a state in which three packages of type α have been removed from the first tier, leaving one package. The replenishment point determination processor 81 determines that the ninth package of type α is a replenishment point because there is only one package of type α. The replenishment unit determination processor 87 determines that the replenishment unit of type α to be replenished corresponding to the ninth package is one tier (three packages). Figure 8(h) shows a state in which three packages of type α have been replenished from the state of Figure 8(g).

[0021] Referring to Figure 8(h), the replenishment point determination processing unit 81 processes the tenth item. The type of the tenth item is type α. The replenishment point determination processing unit 81 determines that the item is not a replenishment point because there are two or more items of type α. Figure 8(i) shows the state in Figure 8(h) after two items of type α have been removed.

[0022] 8(i), the replenishment point determination processing unit 81 processes the 11th and 12th packages. The product type of the 11th and 12th packages is product type β. The replenishment point determination processing unit 81 determines that the product type β exists more than once and therefore is not a replenishment point.

[0023] Figure 8(j) shows a state in which two packages of type β from the third tier have been removed, leaving one package. The replenishment point determination processor 81 determines that the 13th package of type β is a replenishment point because there is only one package of type β. The replenishment unit determination processor 87 determines that the replenishment unit of type β to be replenished corresponding to the 13th package is one tier (three packages). Figure 8(k) shows a state in which three packages of type β have been replenished from the state of Figure 8(j).

[0024] 8(k), the replenishment point determination processing unit 81 processes the 14th and 15th packages. The product type of the 14th and 15th packages is product type β. The replenishment point determination processing unit 81 determines that the product type β exists more than once and therefore is not a replenishment point.

[0025] Figure 8(l) shows a state in which three packages of type β have been removed from the third tier, leaving one package. The replenishment point determination processor 81 determines that the 16th package of type β is a replenishment point because there is only one package of type β. The replenishment unit determination processor 87 determines that the replenishment unit of type β to be replenished corresponding to the 16th package is one tier (three packages). Figure 8(m) shows a state in which three packages of type β have been replenished from the state of Figure 8(l).

[0026] 8(m), the replenishment point determination processing unit 81 processes the 17th and 18th packages. The product type of the 17th and 18th packages is product type β. The replenishment point determination processing unit 81 determines that the product type β exists more than once and therefore is not a replenishment point.

[0027] Figure 8(n) shows a state in which three packages of type β have been removed from the third tier, leaving only one. The replenishment point determination processor 81 determines that the 19th package of type β is a replenishment point because there is only one package of type β. The replenishment unit determination processor 87 determines that the replenishment unit of type β to be replenished corresponding to the 19th package is one tier (three packages). Figure 8(o) shows a state in which three packages of type β have been replenished in the state of Figure 8(n).

[0028] Referring to Figure 8(o), the replenishment point determination processing unit 81 processes the 20th item. The type of the 20th item is type β. The replenishment point determination processing unit 81 determines that the item is not a replenishment point because there are two or more items of type β. Figure 8(p) shows the state in Figure 8(o) after two items of type β have been removed.

[0029] 8(q), the replenishment point determination processing unit 81 determines that the third, sixth, ninth, thirteenth, sixteenth, and nineteenth packages are replenishment points. The replenishment unit determination processing unit 87 determines the replenishment unit for the packages at each replenishment point to be one layer (three packages). [Prior art documents] [Patent documents]

[0030] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-81432 Summary of the Invention [Problem to be solved by the invention]

[0031] As shown in Figures 7 and 8, priority analysis is performed once for all parcels to be shipped, and the number of parcels of each type replenished in the parcel storage section 77 is managed based on this analysis. However, the types and replenishment units required change over time, for example, as the types shipped in the morning tend to differ from the types shipped in the evening. Therefore, increasing the replenishment unit results in periods of increased inventory. On the other hand, reducing the replenishment unit can reduce inventory, but it also increases the number of times the pallets 75 to be processed are taken out and stored from the pallet work shelf 71, reducing overall work efficiency.

[0032] Therefore, an object of the present invention is to provide a replenishment unit adjustment system and the like that is suitable for not reducing the work efficiency for replenishing packages used in sorting work. [Means for solving the problem]

[0033] A first aspect of the present invention is a replenishment unit adjustment system in which a luggage sorting device retrieves multiple luggage items from a luggage storage unit and sorts them by type according to sorting order data in order to ship them, the system comprising a replenishment analysis processing device and a luggage replenishment device, the replenishment analysis processing device comprising a replenishment point determination processing device, a partial extraction processing device, a priority analysis processing device, and a replenishment unit determination processing device, the replenishment point determination processing device determines whether each luggage item in the sorting order data is a replenishment point, the partial extraction processing device extracts an analysis target number of luggage items in sorting order starting with the luggage item that is the replenishment point, the priority analysis processing device performs priority analysis on the analysis target number of luggage items extracted by the partial extraction processing device, the replenishment unit determination processing device determines a replenishment unit in accordance with the priority of the rank of the type of luggage that becomes a replenishment point according to the priority analysis, and the luggage replenishment device replenishes the luggage storage unit with replenishment units for the type of luggage at the replenishment point.

[0034] A second aspect of the present invention is the replenishment unit adjustment system of the first aspect, wherein the replenishment unit determination processing unit determines the replenishment timing when a replenishment unit of cargo is replenished from one pallet at a replenishment point based on the replenishment point, and determines the replenishment timing when a replenishment unit of cargo is replenished from a reference pallet and an additional pallet at the replenishment point based on the replenishment point for the reference pallet, and determines the replenishment timing for the additional pallet using the quantity replenished from the reference pallet.

[0035] A third aspect of the present invention is a replenishment unit adjustment method in a replenishment unit adjustment system in which a luggage sorting device retrieves multiple luggage items present in a luggage storage unit for shipment and sorts them by type according to sorting order data, the replenishment unit adjustment method comprising: a replenishment analysis processing device; and a luggage replenishment device, the replenishment analysis processing device comprising a replenishment point determination processing device, a partial extraction processing device, a priority analysis processing device, and a replenishment unit determination processing device, and the method includes a step of the replenishment point determination processing device determining whether each luggage item in the sorting order data is a replenishment point; a step of the partial extraction processing device extracting an analysis target number of luggage items in sorting order starting with the luggage item that is the replenishment point; a step of the priority analysis processing device performing a priority analysis on the analysis target number of luggage items extracted by the partial extraction processing device; a step of the replenishment unit determination processing device determining a replenishment unit in accordance with the priority of the rank of the type of luggage that becomes a replenishment point according to the priority analysis; and a step of the luggage replenishment device replenishing the luggage storage unit with a replenishment unit of luggage for the type of luggage at the replenishment point.

[0036] A fourth aspect of the present invention is the replenishment unit adjustment method of the third aspect, wherein the replenishment unit determination processing unit determines the replenishment timing when a replenishment unit of cargo is replenished from one pallet at a replenishment point based on the replenishment point, and determines the replenishment timing when a replenishment unit of cargo is replenished from a reference pallet and an additional pallet at the replenishment point based on the replenishment point for the reference pallet, and determines the replenishment timing for the additional pallet using the quantity replenished from the reference pallet. [Effects of the Invention]

[0037] According to each aspect of the present invention, for a piece of luggage that is to be a replenishment point, from among the piece of luggage and pieces of luggage that will be allocated thereafter, the number of pieces to be analyzed is extracted in the order of allocation, starting with the piece of luggage, and a focused analysis is performed on the extracted pieces to determine the replenishment unit for the piece of luggage at the replenishment point.This makes it possible to replenish the number of pieces of luggage that will be needed over time by replenishing more of the pieces that are being shipped out frequently within a certain time period from the replenishment point and replenishing less of the pieces that are not being shipped out frequently. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a block diagram showing an example of the configuration of a replenishment unit adjustment system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a flow chart showing an example of processing by the supplementary analysis processing device 11. [Figure 3] FIG. 1 is a first diagram for explaining a specific example of a process for determining a replenishment unit. [Figure 4] FIG. 2 is a second diagram for explaining a specific example of the process for determining a replenishment unit. [Figure 5] 1. FIG. 4 is a diagram showing another example of the configuration of the luggage replenishment device 13, the luggage storage section 27, and the luggage sorting device 7 of FIG. [Figure 6] 10 is a diagram for explaining an example of processing in the key analysis processing unit 35 and the replenishment unit determination processing unit 37. FIG. [Figure 7] FIG. 1 is a block diagram showing an example of the configuration of a conventional replenishment unit adjustment system. [Figure 8] FIG. 10 is a diagram for explaining a specific example of a conventional process for determining a replenishment unit. DETAILED DESCRIPTION OF THE INVENTION

[0039] Hereinafter, examples of the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples. [Example]

[0040] FIG. 1 is a block diagram showing an example of the configuration of a replenishment unit adjustment system according to an embodiment of the present invention.

[0041] The replenishment unit adjustment system 1 includes an allocation order determination processing device 3, an allocation order storage device 5, a luggage allocation device 7, a shipping processing device 9, a replenishment analysis processing device 11, a luggage replenishment device 13, a pallet conveying device 15, a pallet work shelf 21, a pallet storage 22, an empty pallet storage section 23, and a luggage storage section 27.

[0042] The replenishment analysis processing device 11 includes a replenishment point determination processing unit 31, a partial extraction processing unit 33, a priority analysis processing unit 35, a replenishment unit determination processing unit 37, and a replenishment unit / replenishment timing storage device 39. The replenishment analysis processing device 11 does not perform processing according to the sorting status actually performed by the baggage sorting device 7, but performs information processing on data.

[0043] The replenishment analysis processing device 11 is realized by, for example, a computer. The replenishment point determination processing device 31, the partial extraction processing device 33, the key analysis processing device 35, and the replenishment unit determination processing device 37 are realized by, for example, a processor (processing device) that operates under a program. The replenishment unit / replenishment timing storage device 39 is realized by, for example, a storage device such as a memory.

[0044] The replenishment unit adjustment system 1 has a luggage sorting device 7 that sorts multiple luggage stored in a luggage storage section 27 according to each destination, and a shipping processing device 9 that processes the luggage to send it to each destination.

[0045] Pallets are stacked in multiple layers with multiple items packed by product type. Each layer contains one or more items. The pallet storage 22 stores pallets before shipping. The pallet work shelf 21 stores pallets that are about to be shipped.

[0046] A replenishment reference number is set for each type of luggage. When luggage is removed from the luggage storage section 27, the inventory quantity of the removed luggage type in the luggage storage section 27 decreases. When a certain luggage is removed from the luggage storage section 27, if the inventory quantity of that luggage type in the luggage storage section 27 is equal to or less than the replenishment reference number, that luggage is called a replenishment point. The pallet transport device 15 removes a target pallet 25 that holds the luggage type that is the replenishment point from the pallet work shelf 21. The luggage replenishment device 13 removes one or more layers of luggage from the target pallet 25, breaks it down, and replenishes it in the luggage storage section 27 as shipping luggage. If luggage remains on the target pallet 25, the pallet transport device 15 returns the target pallet 25 to the pallet work shelf 21. If no cargo remains on the pallet 25 to be processed, the pallet transport device 15 moves the pallet 25 to be processed to an empty pallet storage section 23, and replenishes the pallet holding the same type of goods as those held on the pallet 25 from the pallet storage 22 to the pallet work shelf 21.

[0047] If any type of luggage runs out in luggage storage section 27, luggage sorting device 7 will be unable to perform sorting work. Therefore, in order to avoid a decrease in the sorting work efficiency of luggage sorting device 7, it is desirable to replenish luggage of each type in luggage storage section 27. However, there is a limit to the number of luggage that can be stored in luggage storage section 27. Therefore, it is required that luggage with a large amount of luggage to be sorted is given priority and stored in large quantities in luggage storage section 27, and luggage with a small amount of luggage to be sorted is stored in small quantities in luggage storage section 27.

[0048] For this reason, the types of goods to be shipped are ranked using priority analysis (also known as Pareto analysis or ABC analysis). Priority analysis is an analytical framework based on the Pareto principle, which ranks indicators (sales, costs, inventory, etc.) in descending order to determine and manage priorities.

[0049] Typically, priority analysis is performed once for all of the luggage that will ultimately be shipped, and this is used to manage the number of luggage of each type replenished in the luggage storage section 27. However, just as there are different trends for types shipped in the morning and types shipped in the evening, the types and replenishment units required change over time.

[0050] Therefore, in the present invention, for a parcel that is to be a replenishment point, the number of parcels to be analyzed is extracted from the parcel and the parcels to be allocated thereafter in the order of allocation, starting with the parcel, and a focused analysis is performed on the extracted parcels to determine the replenishment unit for the parcel at the replenishment point.This makes it possible to adjust the replenishment number in response to changes in the number of parcels required over time by replenishing more parcels that are being shipped in large quantities and replenishing less parcels that are not being shipped in large quantities within a certain time from the replenishment point.

[0051] 1, a sorting order determination processing device 3 determines the sorting order of each package and generates sorting order data indicating the sorting order of each package in order to sort multiple packages to multiple destinations and send them to each destination. A sorting order storage device 5 stores the sorting order data.

[0052] The allocation order determination processing device 3 is realized by, for example, a computer (a processor (processing device) that operates under a program), etc. The allocation order storage device 5 is realized by, for example, a storage device such as a memory.

[0053] The luggage sorting device 7 refers to the sorting order data and sorts the multiple luggage stored in the luggage storage unit 27 to the multiple destinations in accordance with each destination. The shipping processing device 9 performs processing for sending to each destination.

[0054] 2 is a flow chart showing an example of the processing of the supplementary analysis processing device 11. An example of the processing of the supplementary analysis processing device 11 will be described with reference to FIG.

[0055] The replenishment point determination processing unit 31 acquires sorting order data from the sorting order storage device 5 (step STA1). The replenishment point determination processing unit 31 manages inventory quantity management data that manages the inventory quantity of each type of luggage in the luggage storage unit 27 at the time each luggage is picked up according to the sorting order data.

[0056] The replenishment point determination processing unit 31 sets the initial value of the variable n to 1 (step STA2).

[0057] The replenishment point determination processing unit 31 extracts the n-th package in the sorting sequence data as the package to be analyzed (step STA3).

[0058] The replenishment point determination processing unit 31 determines whether the inventory quantity of the item being analyzed in the inventory quantity management data at the time the item being analyzed is removed is equal to or less than the replenishment reference quantity determined for that item (step STA4). If the inventory quantity is equal to or less than the replenishment reference quantity, the replenishment point determination processing unit 31 determines that the item being analyzed is a replenishment point and proceeds to step STA5. If the inventory quantity is greater than the replenishment reference quantity, the replenishment point determination processing unit 31 determines that the item being analyzed is not a replenishment point and proceeds to step STA9.

[0059] In step STA5, the partial extraction processor 33 extracts the number of parcels to be analyzed from the parcel to be analyzed and the parcels to be allocated thereafter, in the order of allocation, starting with the parcel to be analyzed, for the parcel to be analyzed that is the replenishment point. The priority analysis processor 35 performs priority analysis on the parcel types of the extracted number of parcels to be analyzed (step STA6). The replenishment unit determination processor 37 determines the replenishment unit and replenishment timing based on the results of the priority analysis (step STA7). For example, if the parcel type of the parcel to be analyzed is ranked high in the priority analysis, the replenishment unit may be determined by increasing the number of layers to be depalletized on the pallet to be processed 25; if the parcel type of the parcel to be analyzed is ranked low in the priority analysis, the replenishment unit may be determined by decreasing the number of layers to be depalletized on the pallet to be processed 25. The replenishment timing may be determined, for example, from the time when a parcel of the same type is removed before the parcel to be analyzed that is the replenishment point, to the time when a parcel of the same type is removed after the parcel to be analyzed that is the replenishment point. The replenishment unit determination processing unit 37 increments the replenished number for the inventory quantity of the type of the analysis target package in the inventory quantity management data at the time when the analysis target package, which is the replenishment point, is picked up (step STA8). Then, the process proceeds to step STA9.

[0060] In step STA9, the replenishment unit determination processing unit 37 decrements the stock quantity of the product type of the target package by 1 in the stock quantity management data.

[0061] The replenishment point determination processing unit 31 determines whether all packages in the sorting order data have been processed (step STA10). If all packages have been processed, the processing in Fig. 2 ends. If there are packages that have not been processed, n is incremented by 1 (step STA11) and the process returns to step STA3.

[0062] A specific example of the process for determining the replenishment unit will be described with reference to Figures 3 and 4. The replenishment unit is the replenishment of some or all of the rows of one pallet. Therefore, the maximum is the replenishment of all rows of one pallet, and the minimum is the replenishment of one row.

[0063] In this example, the product types are α and β. Both products α and β are stacked on the pallet in two layers, with three packages on each layer. Therefore, the number of packages that the package replenishment device 13 depallets on the target pallet 25 to turn into shipping packages is three for one layer and six for two layers.

[0064] It is assumed that the sorting order determination processing device 3 has decided to sort 10 units of goods of type α, followed by 10 units of goods of type β. The sorting order data is data that specifies this sorting order.

[0065] The luggage storage section 27 has three shelves (see FIGS. 3(b), (c), (e), (f), (h) to (j), and FIGS. 4(b), (c), (e), and (f)). Each shelf can hold up to four luggage items as inventory. The first shelf (the highest shelf in FIGS. 3 and 4) holds luggage of type α. The third shelf (the lowest shelf in FIGS. 3 and 4) holds luggage of type β. The second shelf (the shelf between the first and third shelves in FIGS. 3 and 4) is shared by luggage of type α and type β, and is taken out with priority over the first and third shelves. In other words, if luggage of type α exists on the first and second shelves, the luggage on the second shelf is taken out first, followed by the luggage on the first shelf. If luggage of type β exists on the second and third shelves, the luggage on the second shelf is taken out first, followed by the luggage on the third shelf.

[0066] In the initial state, it is assumed that there are three items of type α and three items of type β in the luggage storage unit 27. That is, the initial values ​​of the inventory quantity management data are three items of type α and three items of type β.

[0067] In the replenishment point determination processing unit 31, the replenishment reference number is set to 1 for both product types α and β. In other words, at the time of retrieving the parcel to be analyzed, if the product type of the parcel to be analyzed in the inventory quantity management data is 1 or less, the parcel to be analyzed is determined to be a replenishment point. If the product type of the parcel to be analyzed in the inventory quantity management data is 2 or more, the parcel to be analyzed is determined not to be a replenishment point.

[0068] The number of items to be analyzed in the partial extraction processing unit 33 is set to 10. That is, the partial extraction processing unit 33 references the sorting order data and extracts 10 items starting with the item to be analyzed. However, if there are fewer than 10 items remaining starting with the item to be analyzed, all items up to the last item will be extracted.

[0069] The priority analysis by the priority analysis processing unit 35 and the determination of the replenishment unit by the replenishment unit determination processing unit 37 will be simplified for ease of explanation. The priority analysis processing unit 35 determines the proportion of the product type of the analysis target package in the package extracted by the partial extraction processing unit 33. The replenishment unit determination processing unit 37 determines the replenishment unit according to the proportion of the product type of the analysis target package in the package extracted by the partial extraction processing unit 33. Specifically, product types that account for 70% or more of the package extracted by the partial extraction processing unit 33 are given a priority rank and the replenishment unit is set to two levels (6 items), while product types that account for less than 70% are given a normal rank and the replenishment unit is set to one level (3 items). However, if the number of product types of the analysis target package in the package extracted by the partial extraction processing unit 33 is three or less, the replenishment unit is set to one level (3 items).

[0070] Fig. 3(a) shows sorting order data. Fig. 3(b) shows the initial state of the luggage storage unit 27. There are three luggage items of type α in the first tier, and three luggage items of type β in the third tier. There is no luggage item in the second tier.

[0071] 3(b), the replenishment point determination processing unit 31 performs processing on the first package. The product type of the first package is product type α. The replenishment point determination processing unit 31 determines that the product type α is not a replenishment point because there are three of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processing unit 37 reduces the inventory quantity of the product type α in the inventory quantity management data by one to two (step STA9).

[0072] The replenishment point determination processor 31 processes the second package. The type of the second package is type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are two of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type α in the inventory quantity management data by 1 to 1 (step STA9).

[0073] FIG. 3(c) shows a state where there is only one item of type α in the first row. The replenishment point determination processor 31 determines that the third item of type α is a replenishment point because there is only one item of type α in the inventory quantity management data (YES in step STA4). The partial extraction processor 33 extracts 10 items of type α, starting with the third item of type α (step STA5). FIG. 3(d) shows the 10 items extracted, starting with the third item of type α. The priority analysis processor 35 calculates the proportion of items of type α among the 10 extracted items (step STA6). In this example, there are eight items of type α and two items of type β, so the proportion of items of type α is 80%. Therefore, the replenishment unit determination processor 37 determines that type α belongs to the priority rank and type β belongs to the normal rank. The type of the third item is α, and the replenishment unit of type α to be replenished corresponding to the third item is determined to be two rows (six items). FIG. 3(e) shows the state in FIG. 3(c) after six packages of type α have been replenished. There are four packages of type α in the first tier, three packages of type α in the second tier, and three packages of type β in the third tier. The replenishment timing is determined based on the third package, which is the replenishment point, from the time when the second package of type α, which is the package that is picked up immediately before that, is picked up until the time when the fourth package of type α, which is the package that is picked up immediately after that, is picked up (step STA7). The replenishment unit determination processor 37 increases the inventory quantity of type α in the inventory quantity management data by 6 to make it 7 (step STA8). The replenishment unit determination processor 37 then reduces the inventory quantity of type α in the inventory quantity management data by 1 to make it 6, reflecting the state after the third package has been picked up (step STA9).

[0074] The replenishment point determination processor 31 processes the fourth package. The product type of the fourth package is product type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are six of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type α in the inventory quantity management data by one to five (step STA9).

[0075] The replenishment point determination processor 31 processes the fifth package. The product type of the fifth package is product type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are five of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of the product type α in the inventory quantity management data by one to four (step STA9).

[0076] The replenishment point determination processor 31 processes the sixth package. The product type of the sixth package is product type α. The replenishment point determination processor 31 determines that the sixth package is not a replenishment point because there are four units of product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type α in the inventory quantity management data by one to three (step STA9).

[0077] The replenishment point determination processor 31 processes the seventh package. The product type of the seventh package is product type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are three of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of the product type α in the inventory quantity management data by one to two (step STA9).

[0078] The replenishment point determination processor 31 processes the eighth package. The product type of the eighth package is product type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are two of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type α in the inventory quantity management data by 1 to 1 (step STA9).

[0079] FIG. 3(f) shows a state where there is only one item of type α in the first tier. The replenishment point determination processor 31 determines that the ninth item of type α is a replenishment point because there is only one item of type α in the inventory quantity management data (YES in step STA4). The partial extraction processor 33 extracts ten items, starting with the ninth item of type α (step STA5). FIG. 3(g) shows the ten items extracted, starting with the ninth item of type α. The priority analysis processor 35 calculates the proportion of items of type α among the ten extracted items (step STA6). In this example, two items of type α and eight items of type β are included, so the proportion of items of type α is 20%. Therefore, the replenishment unit determination processor 37 determines that type α belongs to the normal rank and type β belongs to the priority rank. The type of the ninth item is α, and the replenishment unit of type α to be replenished corresponding to the ninth item is determined to be one tier (three items). FIG. 3(h) shows the state in FIG. 3(f) after three packages of type α have been replenished. There are four packages of type α in the first tier, three packages of type β in the third tier, and no packages in the second tier. The replenishment timing is determined based on the ninth package, which is the replenishment point, from the time when the eighth package of type α, which is the package to be picked up immediately before, is picked up until the time when the tenth package of type α, which is the package to be picked up immediately after that, is picked up (step STA7). The replenishment unit determination processing unit 37 increases the inventory quantity of type α in the inventory quantity management data by 3 to make it four (step STA8). The replenishment unit determination processing unit 37 then reduces the inventory quantity of type α in the inventory quantity management data by 1 to make it three, reflecting the state in which the ninth package has been picked up (step STA9).

[0080] The replenishment point determination processor 31 processes the tenth package. The product type of the tenth package is product type α. The replenishment point determination processor 31 determines that the product type α is not a replenishment point because there are three of the product type α in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of the product type α in the inventory quantity management data by one to two (step STA9).

[0081] The replenishment point determination processor 31 processes the 11th package. The product type of the 11th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are three of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to two (step STA9).

[0082] The replenishment point determination processor 31 processes the 12th package. The product type of the 12th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are two of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by 1 to 1 (step STA9).

[0083] FIG. 3(j) shows a state where there is only one item of type β in the third row. The replenishment point determination processor 31 determines that the 13th item of type β is a replenishment point because there is only one item of type β in the inventory quantity management data (YES in step STA4). The partial extraction processor 33 extracts 10 items, starting with the 13th item of type β (step STA5). FIG. 4(a) shows items extracted starting with the 13th item of type β. In this example, there are eight remaining items, which is less than ten, so all eight items up to the last item are extracted. The priority analysis processor 35 calculates the proportion of items of type β among the eight extracted items (step STA6). In this example, all items are type β, so the proportion of items of type β is 100%. Therefore, the replenishment unit determination processor 37 determines that type β belongs to the priority rank. The type of the 13th item is β, and the replenishment unit of type β to be replenished corresponding to the 13th item is determined to be two tiers (6 units). Figure 4(b) shows the state in which six items of type β have been replenished from the state in Figure 3(j). There are two items of type α in the first tier, three items of type β in the second tier, and four items of type β in the third tier. The replenishment timing is determined to be, based on the 13th item, which is the replenishment point, from the time when the 12th item, which is the item of type β that is picked up immediately before, is picked up until the time when the 14th item, which is the item of type β that is picked up immediately after that, is picked up (step STA7). The replenishment unit determination processor 37 increases the inventory quantity of type β in the inventory quantity management data by 6 to make it 7 units (step STA8). The replenishment unit determination processor 37 decreases the inventory quantity of type β in the inventory quantity management data by 1 to make it 6 units, reflecting the state in which the 13th item has been picked up (step STA9).

[0084] The replenishment point determination processor 31 processes the 14th package. The product type of the 14th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are six of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to five (step STA9).

[0085] The replenishment point determination processor 31 processes the 15th package. The product type of the 15th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are five of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to four (step STA9).

[0086] The replenishment point determination processor 31 processes the 16th package. The product type of the 16th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are four of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to three (step STA9).

[0087] The replenishment point determination processor 31 processes the 17th package. The product type of the 17th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are three of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to two (step STA9).

[0088] The replenishment point determination processor 31 processes the 18th package. The product type of the 18th package is product type β. The replenishment point determination processor 31 determines that the product type β is not a replenishment point because there are two of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processor 37 reduces the inventory quantity of product type β in the inventory quantity management data by 1 to 1 (step STA9).

[0089] FIG. 4(c) shows a state where there is only one item of type β in the third row. The replenishment point determination processing unit 31 determines that the 19th item of type β is a replenishment point because there is only one item of type β in the inventory quantity management data (YES determination in step STA4). The partial extraction processing unit 33 extracts 10 items of type β, starting with the 19th item of type β (step STA5). FIG. 4(d) shows items extracted starting with the 19th item of type β. In this example, there are two remaining items, which is less than 10, so all two items up to the last item are extracted. The priority analysis processing unit 35 calculates the proportion of type β in the two extracted items (step STA6). In this example, all items are type β, so the proportion of type β is 100%. However, since the number of packages of type β included in the 19th package and onward is two, which is three or less, the replenishment unit determination processor 37 determines that the replenishment unit of type β to be replenished corresponding to the 19th package is one tier (three packages). Figure 4(e) shows the state in which three packages of type β have been replenished from the state in Figure 4(c). There are two packages of type α in the first tier, four packages of type β in the third tier, and no packages in the second tier. The replenishment timing is determined to be, based on the 19th package, which is the replenishment point, from the time when the 18th package of type β, which is the package of type β that is picked up immediately before, is picked up until the time when the 20th package of type β, which is the package of type β that is picked up immediately after that, is picked up (step STA7). The replenishment unit determination processor 37 increases the inventory quantity of type β in the inventory quantity management data by three to four (step STA8). The replenishment unit determination processing unit 37 reduces the stock quantity of product type β in the stock quantity management data by 1 to 3, reflecting the state that the 19th item has been taken out (step STA9).

[0090] The replenishment point determination processing unit 31 processes the 20th package. The type of the 20th package is type β. The replenishment point determination processing unit 31 determines that the product type β is not a replenishment point because there are three units of the product type β in the inventory quantity management data (NO in step STA4), and the replenishment unit determination processing unit 37 reduces the inventory quantity of product type β in the inventory quantity management data by one to two units (step STA9). Figure 4(f) shows the state after processing has been performed on all packages in the sorting order data.

[0091] As shown in FIG. 4(g), the replenishment point determination processor 31 determines that the third, ninth, thirteenth, and nineteenth parcels are replenishment points. The replenishment unit determination processor 37 determines the replenishment unit of parcel type α for the third parcel to be two tiers (six parcels), the replenishment unit of parcel type α for the ninth parcel to be one tier (three parcels), the replenishment unit of parcel type β for the thirteenth parcel to be two tiers (six parcels), and the replenishment unit of parcel type β for the nineteenth parcel to be one tier (three parcels). The replenishment analysis processor 11 considers the sorting order data to represent data indicating future states in a time series. The replenishment analysis processor 11 can refer to the sorting order data to prioritize replenishment of parcel type α during time periods when the allocation of parcel type α is high, and prioritize replenishment of parcel type β during time periods when the allocation of parcel type β is high.

[0092] Figures 8, 3 and 4 show similar allocations, but in Figure 8(q) there are six replenishment points and the number of times the pallet 25 to be processed is removed is high, whereas in Figure 4(g) there are four replenishment points and the number of times the pallet 25 to be processed is removed can be significantly reduced.

[0093] In FIG. 8, packages are replenished from one pallet to one replenishment point. On the other hand, in FIGS. 3 and 4, for example, when replenishing two layers of packages, two layers may be replenished from one pallet, or one layer may be replenished from two pallets. In the present invention, when the replenishment unit at a replenishment point is multiple layers, the replenishment unit determination processing unit 37 may determine the replenishment timing depending on whether the packages are replenished from one pallet or multiple pallets. That is, when replenishing from one pallet, the replenishment timing is determined based on the replenishment point. When replenishing from multiple pallets, the replenishment timing is determined based on the replenishment point for at least one reference pallet, and the number of additional pallets is determined using the quantity replenished from the reference pallet.

[0094] For example, in the case of FIG. 4(g), the replenishment unit at the replenishment point for the third item is two levels. Therefore, when two levels of items are replenished from one pallet at the replenishment point for the third item, the replenishment unit determination processor 37 determines the replenishment period as from the time when the second item of type α, which is picked up immediately before the third item, is picked up until the time when the fourth item of type α, which is picked up immediately after that, is picked up. Also, when items are replenished one level at a time from two pallets, as shown in FIG. 4(h), one reference pallet is determined as from the time when the second item of type α, which is picked up immediately before the third item, is picked up until the time when the fourth item of type α, which is picked up immediately after that, is picked up. The timing for replenishing one level of items from another additional pallet is determined as from the time when the second item of type α, which is picked up immediately before the third item, is picked up until the time when the sixth item of type α, which is located after the number of items replenished from the reference pallet, is picked up.

[0095] Similarly, the replenishment unit at the replenishment point for the 13th item is two levels. Therefore, when two levels of items are replenished from one pallet at the replenishment point for the 13th item, the replenishment unit determination processor 37 determines the replenishment timing to be from the time when the 12th item, which is a product type β and is picked up immediately before the 13th item, is picked up until the time when the 14th item, which is a product type β and is picked up immediately after that, is picked up. Furthermore, when items are replenished one level at a time from two pallets, the replenishment timing for one pallet is determined to be from the time when the 12th item, which is a product type β and is picked up immediately before the 13th item, is picked up until the time when the 14th item, which is a product type β and is picked up immediately after that, is picked up, using the 13th item, which is the replenishment point, as the reference, and determines the replenishment timing for one level of items from the other pallet to be from the time when the 12th item, which is a product type β and is picked up immediately before the 13th item, is picked up until the time when the 16th item, which is a product type β and is located after the number of items replenished from the previous pallet, is picked up.

[0096] In FIG. 4(g), the degree of freedom in the replenishment timing is greater than in FIG. 8(q).

[0097] Furthermore, replenishment from multiple pallets is necessary when the rank of the replenishment item type is high among the number of parcels to be analyzed extracted by the partial extraction processing unit 33. Therefore, the replenishment unit determination processing unit 37 may determine that replenishment is necessary earlier if the proportion of the replenishment item type is high in the first half and low in the second half of the number of parcels to be analyzed extracted by the partial extraction processing unit 33, for example, using half as a standard, and may set the replenishment timing to, for example, from the time the second parcel is taken out to the time the fourth or fifth parcel is taken out. In this way, the replenishment unit determination processing unit 37 may advance the replenishment timing of another pallet if the replenishment item type is concentrated in the first half of the number of parcels to be analyzed extracted by the partial extraction processing unit 33.

[0098] A case where more varieties are sorted will be described with reference to FIGS.

[0099] 5 shows another example of the configuration of the luggage replenishment device 13, luggage storage unit 27, and luggage sorting device 7 of FIG. 1. The luggage replenishment device 13 transports luggage of each type from the bottom left to the top, and places each type of luggage in the luggage storage unit 27 from the left into a position corresponding to that type. The luggage sorting device 7 removes each type of luggage from the right in a predetermined order, moves it up, and sends it out from the top right. Therefore, the luggage storage unit 27 manages luggage on a first-in, first-out basis.

[0100] 6 is a diagram for explaining an example of processing in the priority analysis processing unit 35 and the replenishment unit determination processing unit 37. In this example, it is assumed that 12,000 cases of 100 product types are shipped in 12 hours. For simplicity's sake, it is assumed that one pallet is loaded with 48 cases in total, with six rows of eight cases per row.

[0101] By referring to the required quantity values ​​obtained in advance, the analysis is performed in four sections with a quantity ratio of 25% each. In the example of Figure 6, when arranged in order of required quantity, the top 25% of the quantity ratio (Rank A) is occupied by 5 types of products, the next 25% (Rank B) is occupied by 10 types of products, the next 25% (Rank C) is occupied by 25 types of products, and the bottom 25% is occupied by 60 types of products.

[0102] The replenishment unit is one pallet (full tier replenishment) for rank A, 1 / 2 pallet (3 tiers) for rank B, 1 / 3 pallet (2 tiers) for rank C, and 1 / 6 pallet (1 tier, 1 side) for rank D. By increasing the replenishment unit for product types of ranks with higher demand, the number of times the target pallets 25 are removed from the pallet work shelf 21 (number of operations of the pallet transport device 15) can be reduced.

[0103] The equipment receives the same amount of goods as it ships. If the amount of goods received differs from the amount shipped, overflows or inventory shortages will occur. Therefore, the equipment needs to have the transportation capacity to ship 12,000 items and receive 12,000 items in 12 hours.

[0104] The priority analysis processor 35 performs priority analysis targeting a fixed number of items at each replenishment point. Products that tend to be shipped in constant quantities tend to be ranked the same at each replenishment point. Therefore, the number of items replenished at each replenishment point fluctuates little over time. On the other hand, for products with large fluctuations in shipment volume, the number of items replenished at each replenishment point can be varied depending on the shipment volume after the replenishment point, for example, by assigning an A rank to a replenishment point with a continuous period of high shipment volume and a D rank to a replenishment point with a continuous period of low shipment volume. In this way, the replenishment unit determination processor 37 can increase or decrease the replenishment unit depending on the rank of the product to be replenished obtained by priority analysis for each replenishment point. This not only reduces inventory but also reduces the number of times the target pallets 25 are removed from the pallet work shelf 21 (the number of operations of the pallet transport device 15) by increasing the replenishment unit during periods of high shipment volume, setting the replenishment unit to 1 / 3, 1 / 2, or even 1 pallet. [Explanation of symbols]

[0105] 1. Replenishment Unit Adjustment System 3. Distribution Order Determination Processor 5. Sort Order Storage Device 7. Luggage sorting device 9. Shipping Processing Equipment 11 Supplementary analytical processing equipment 13 Luggage replenishment device 15 Pallet transport device 21 Pallet Work Shelf 22 Pallet Storage 23 Empty pallet storage area 25 Processing target pallet 27 Luggage Storage Department 31 Replenishment point determination processing unit 33 Partial extraction processing unit 35 Key Analysis Processing Section 37 Replenishment unit determination processing section 39 Refill unit and refill timing memory device 51 Replenishment Unit Adjustment System 53 Distribution order determination processing device 55 Sort Order Storage Device 57 Luggage sorting device 59 Shipping Processing Equipment 61 Supplementary analytical processing equipment 63 Luggage Replenishment Device 65 Pallet transport device 71 Pallet Work Shelf 72 Pallet Storage 73 Empty pallet storage area 75 Processing target pallets 77 Luggage Storage Department 81 Replenishment point determination processing unit 87 Replenishment unit determination processing section 89 Refill unit and refill timing memory device

Claims

1. A replenishment unit adjustment system in which a luggage sorting device takes out a plurality of luggage stored in a luggage storage unit and sorts them by type according to sorting order data, A replenishment analysis processing device and a baggage replenishment device are provided, The replenishment analysis processing device includes a replenishment point determination processing unit, a partial extraction processing unit, a key analysis processing unit, and a replenishment unit determination processing unit, The replenishment point determination processing unit determines whether each piece of luggage in the sorting order data is a replenishment point, The partial extraction processing unit extracts the number of parcels to be analyzed in the order of allocation, starting with the parcel that is the replenishment point, and the focused analysis processing unit performs focused analysis on the number of packages to be analyzed extracted by the partial extraction processing unit, the replenishment unit determination processing unit determines a replenishment unit according to the priority of the rank of the type of goods that will be the replenishment point based on the priority analysis; The luggage replenishment device is a replenishment unit adjustment system that replenishes luggage in replenishment units for the type of luggage at the replenishment point to the luggage storage section.

2. The replenishment unit determination processing unit The timing of replenishing a replenishment unit from one pallet at a replenishment point is determined based on the replenishment point, 2. The replenishment unit adjustment system of claim 1, wherein the timing of replenishment when replenishing a replenishment unit of cargo from a reference pallet and an additional pallet at a replenishment point is determined for the reference pallet based on the replenishment point, and for the additional pallet, the timing is determined using the quantity replenished from the reference pallet.

3. A replenishment unit adjustment method in a replenishment unit adjustment system in which a luggage sorting device takes out a plurality of luggage stored in a luggage storage unit and sorts them by product type according to sorting order data, The replenishment unit adjustment system includes a replenishment analysis processing device and a baggage replenishment device; The replenishment analysis processing device includes a replenishment point determination processing unit, a partial extraction processing unit, a key analysis processing unit, and a replenishment unit determination processing unit, a step in which the replenishment point determination processing unit determines whether each piece of luggage in the sorting order data is a replenishment point; the partial extraction processing unit extracts the number of parcels to be analyzed in the order of allocation, starting with the parcel that is the replenishment point; a step in which the priority analysis processing unit performs priority analysis on the number of packages to be analyzed extracted by the partial extraction processing unit; a step in which the replenishment unit determination processing unit determines a replenishment unit according to the priority of the rank of the type of goods that become replenishment points through the priority analysis; A replenishment unit adjustment method including a step in which the luggage replenishment device replenishes luggage of a replenishment unit for the type of luggage at the replenishment point to the luggage storage section.

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