JPWO2017168678A1 - Warehouse management system and warehouse management method - Google Patents

Abstract

A storage unit that holds inventory information indicating the storage state of articles at each of a plurality of storage positions in the warehouse and the quantity of stored inventory articles, the shipment results of articles, and the priority of each storage position; A storage period calculation unit for estimating a storage period of the received article based on the quantity of the received article, the quantity of the inventory article, and the actual shipment, and the article is stored based on the storage period and the priority. A storage position determination unit that determines any of the empty storage positions that are not stored as a storage position in which the received article is stored; and an output unit that outputs the determined storage position. A warehouse management system is provided.

Description

  The present invention relates to an instruction for storing an article in a manufacturing / distribution site.

  In order to realize inventory placement with high work efficiency in a warehouse, there is a technique described in Japanese Patent Application Laid-Open No. 2003-212316 (Patent Document 1) or Japanese Patent Application Laid-Open No. 2008-285319 (Patent Document 2).

  Patent Document 1 states that “the best-selling product analysis / determination function searches the receipt / shipment data described above, obtains the sum of the number of shipments for each shipment date, obtains the average number of shipments per month and the variation standard deviation, The deviation / monthly average number of shipments is plotted on the vertical axis, where the vertical axis shows the range of the standard deviation / monthly average number of shipments divided into four, and the horizontal axis shows the calculated monthly average number of shipments in four. The ranges correspond to each other, and the intersections of the divided ranges become the division layers, and the product numbers associated with the articles to be stored are assigned to these division layers.

  Patent Document 2 includes a “production plan storage unit storing a production plan, a parts information database unit storing part information, a placement information database unit storing placement information, and a component configuration table storage unit storing production order. And a component placement map creating means for creating a component placement map showing the optimum placement position of the parts based on the information of each part, and a component placement map matching means for matching the current component placement with the created component placement map, And a component movement location calculation means for instructing the movement of the component so that the movement amount of the component is minimized when the placement is always set to the optimum placement position by moving the component based on the collation result. It is described.

  Patent Document 1: Japanese Patent Application Laid-Open No. 2003-212316

  Patent Document 2: Japanese Patent Application Laid-Open No. 2008-285319

  In the storage area of the warehouse, products received from a factory or the like are held in the storage area and shipped according to orders from the delivery / shipping destination. The shipment includes a CS shipment in which a certain product is shipped in a case (Case: hereinafter referred to as CS), and a bulk shipment in which the case is unpacked and shipped in a single item (Pice: hereinafter referred to as Pcs). .

  In the case of bulk shipment, it is common to ship after replenishment from the storage area to the bulk area. In the storage area, a forklift is used to place a plurality of CSs on a pallet (hereinafter referred to as “PL”) to store in the storage area (hereinafter simply referred to as “storage”), CS shipping operation (hereinafter referred to as CS shipping). Are simply referred to as “shipping”), and a refilling operation to the rose area (hereinafter simply referred to as “replenishment”) is performed. Here, replenishment may be performed in units of CS or in units of Pcs.

  In general, in a storage area, a worker (Folkman) visits a plurality of locations (hereinafter referred to as location) and picks a desired product when shipping or replenishing. Therefore, the movement distance of workers at the time of shipment and replenishment is longer than that at the time of storage, and the total man-hours for shipping and replenishment are generally larger than the total man-hours for storage. Therefore, in order to realize a work placement with high work efficiency in the storage area, it is desirable to determine a stock placement that does not require shipping and replenishment work steps.

  In order to reduce the shipping and replenishment work man-hours, products with higher shipment frequency or replenishment frequency may be stored in a location where the number of man-hours required for picking per time is smaller. In general, the distance from the shipping area or the rose area is short, and among the shelves composed of a plurality of tiers, the lower the tier, the smaller the man-hours required for shipment and replenishment per time. Here, such a location with a small work man-hour for shipment or replenishment is called “good location”, and a location with a large work man-hour is called “bad location”.

  The method of Patent Document 1 preferentially stores a high shipment frequency in the good location from past shipment results. However, if a product with a high shipment frequency or replenishment frequency is simply stored in a good location, if there is already an inventory of the same product as the product, the inventory of the same product will be allocated for shipment or replenishment first (i.e. Stock of the same product will be shipped or replenished first). Then, until there is no stock of these same products, the product to be stored (hereinafter referred to as stored product) remains unallocated, and the stored product occupies a good location for a long time.

  This is especially true for commodities shipped in order of lot name or consumption (best-before) deadline. In this case, there arises a problem that a product whose shipping frequency is higher than that of the stored product and a product for which allocation is immediately started cannot be stored in the good location. Therefore, in order to increase the working efficiency of the storage area, it is necessary to store products with high shipping frequency or replenishment frequency and short location days (hereinafter referred to as “location occupation days”) in good locations.

  The method of Patent Document 2 instructs the placement of parts on the production site. In this method, the product usage plan of the factory is close to the part usage time, and products with a large amount of use can be placed near the production line (good location). Can be shortened.

  However, the order in which products are stored in the storage area of the warehouse depends on the distance from the arrival source to the warehouse, road conditions, the progress of the incoming inspection work after arrival of the products, etc. And the order is often unknown. In particular, in a 3PL (third party logics) business undertaking customer logistics operations, information such as detailed arrival or sales plans of products is often not disclosed by customers.

  Under such circumstances, it is difficult for warehouse workers to make a strict order and plan for storing products in the warehouse. Therefore, it is difficult to use the method of Patent Document 2 that determines the arrangement of goods (parts) based on a plan in a warehouse.

  As a result, even if the order of arrival of goods to the storage area cannot be predicted, the location occupation days when the products are stored are predicted, and products with high shipping frequency and replenishment frequency and short location occupation days are given priority. By storing in the good location, it is necessary to plan a storage instruction method that realizes highly efficient inventory placement in the storage area.

  In order to solve the above problems, a warehouse management system according to the present invention includes inventory information indicating a storage state of an article at each of a plurality of storage positions in the warehouse and an amount of stored inventory articles, an article shipment record, A storage unit that holds the priority of each storage position, and a storage period calculation unit that estimates the storage period of the received article based on the quantity of the received article, the quantity of the inventory article, and the shipment record And a storage position determination unit that determines, based on the storage period and the priority, any empty storage position where no article is stored as a storage position where the received article is stored, And an output unit for outputting the storage position.

  Even in situations where the order of goods arrival at the warehouse is unpredictable, it is possible to preferentially store goods with a short location occupancy number in good locations, increase the frequency of shipments from good locations, etc. Efficiency can be improved.

  Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is explanatory drawing of the layout of the warehouse where the goods storage instruction | indication apparatus of Example 1 of this invention is used. It is a block diagram which shows the hardware constitutions of the goods storage instruction | indication apparatus of Example 1 of this invention. It is explanatory drawing which shows a network structure at the time of connecting the goods storage instruction | indication apparatus of Example 1 of this invention to the network in a distribution warehouse. It is a flowchart which shows the process sequence of the goods storage instruction | indication apparatus whole of Example 1 of this invention. It is explanatory drawing of the input of storage PL in the goods storage instruction | indication apparatus of Example 1 of this invention. It is explanatory drawing which showed an example of the recommended storage location location which the output part of the goods storage instruction | indication apparatus of Example 1 of this invention outputs. It is explanatory drawing which shows an example of the inventory data which the goods storage instruction | indication apparatus of Example 1 of this invention hold | maintains. It is explanatory drawing which shows an example of the shipment performance which the goods storage instruction | indication apparatus of Example 1 of this invention hold | maintains. It is explanatory drawing which shows an example of the replenishment track record which the goods storage instruction | indication apparatus of Example 1 of this invention hold | maintains. It is a flowchart which shows the calculation method of the location occupation days by the goods storage instruction | indication apparatus of Example 1 of this invention. It is a flowchart which shows the calculation method of the shipment replenishment touch number by the goods storage instruction | indication apparatus of Example 1 of this invention. It is explanatory drawing of the example of calculation of the evaluation value by the goods storage instruction | indication apparatus of Example 1 of this invention. It is explanatory drawing which shows the example of the inventory PL evaluation value list produced by the goods storage instruction | indication apparatus of Example 1 of this invention. It is explanatory drawing of the area division | segmentation priority which the goods storage instruction | indication apparatus of Example 1 of this invention hold | maintains, and a storable order | rank range. It is explanatory drawing which shows schematically the determination method of the storage recommendation destination by the storage location determination part of the goods storage instruction | indication apparatus of Example 1 of this invention. It is a flowchart which shows the process which the goods storage instruction | indication apparatus of Example 4 of this invention performs.

  Details of the embodiment of the present invention will be described below.

  FIG. 1 is an explanatory diagram of a warehouse layout in which the product storage instruction apparatus according to the first embodiment of the present invention is used.

  A warehouse 1 illustrated in FIG. 1 includes a storage area 2 and a rose area 3. The storage area 2 includes a plurality of locations 6, and the goods that have arrived at the arrival place 4 are stored in any location 6. That is, each location 6 is a storage position of a product. When the goods are packed in CS and received, the location 6 stores the CS. When the product is shipped for each CS, the CS taken out from the location 6 is transported to the shipping place 5 and shipped. When a product is shipped for each Pcs, the product is replenished to the rose area 3 as necessary, and a necessary number of Pcs products are transported to the shipping area and shipped. That is, the rose area 3 is an area for storing products of Pcs (single item). The replenishment of products to the rose area 3 is performed in units of CS or Pcs.

  The storage area 2 is divided into a plurality of area sections 7 each including one or more locations 6. In the example of FIG. 1, ten area sections 7 are set, and each includes ten locations 6.

  The layout shown in FIG. 1 is an example, and the present invention can be applied to a warehouse having an arbitrary layout. For example, the positional relationship among the storage area 2, the rose area 3, the arrival place 4, and the shipping place 5 is arbitrary, and the number of locations 6 included in the storage area 2, the number of area sections 7, and included in the area section 7. The number of location 6 is also arbitrary.

  In the first embodiment, description will be made assuming that 1 PL is stored for each location 6 in the storage area 2 of the warehouse 1 illustrated in FIG. Further, it is assumed that the storage location of the product is free (that is, the warehouse 1 is a so-called free location warehouse in which the storage location is not determined in advance according to, for example, items). In addition, it is assumed that 1PL is a product of 1 SKU (Stock Keeping Unit) and 1SKU is equivalent to 1 lot name of 1 product.

  However, the scope of application of the apparatus of the present invention is not limited to products for which lot management is performed. When the same product is stored in multiple locations, the provision order of the product is determined in terms of warehouse operation. If determined, the apparatus of the present invention is applicable. A case where a plurality of SKUs are mixedly mounted on one PL will be described in the second embodiment.

  In the following description, “Product PL” is a PL on which a certain 1 SKU product is placed, “Store PL” is a PL on which a stored product is placed, and “PL” is an inventory of each stock product stored in each location in the storage area. Call it. It should be noted that the present invention is not necessarily applicable only to products on the PL. For example, the present invention can be applied to a product placed on a cart instead of PL.

  FIG. 2 is a block diagram illustrating a hardware configuration of the product storage instruction apparatus according to the first embodiment of the present invention.

  The product storage instruction device 10 is a computer having a storage unit 11 and a calculation unit 12 connected to each other. The storage unit 11 is, for example, a semiconductor storage device, a magnetic disk device, or a combination thereof, and stores a program executed by the calculation unit, data that is referred to in the processing of the calculation unit, and the like. The arithmetic unit 12 is a processor that executes various processes described later in accordance with instructions described in a program stored in the storage unit 11.

  An input unit 13 and an output unit 14 are connected to the product storage instruction device 10. The input unit 13 is a device that receives input of information, such as a keyboard, a mouse, or a barcode reader. The output unit 14 is a device that outputs information, such as an image display device or a printer. The input unit 13 and the output unit 14 may be included in the product storage instruction device 10. In addition, a device corresponding to either the input unit 13 or the output unit 14 may be connected to the product storage instruction device 10, for example, an image display device having a touch panel function.

  The product storage instruction device 10 is further connected to the warehouse network 17 via a network interface (not shown) connected to the calculation unit 12.

  The entire system including the product storage instruction device 10, the input unit 13, the output unit 14, the warehouse management system database 15, and the warehouse management system application server 16 may be called a warehouse management system.

  FIG. 3 is an explanatory diagram illustrating a network configuration when the commodity storage instruction apparatus according to the first embodiment of the present invention is connected to a network in a distribution warehouse.

  In general, the warehouse network 17 is connected to a database 15 and an application server 16 of a warehouse management system called WMS (Warehouse Management System) for managing the receipt / shipment of goods and inventory management. The form of the network may be either wired or wireless. Further, the apparatus of this embodiment can be used and implemented even if it is not necessarily connected to the warehouse network 17 as long as the latest data in the warehouse management system database 15 can be read.

  FIG. 3 is a diagram showing the configuration of the apparatus of this embodiment. In FIG. 3, description will be made assuming that the product storage instruction device 10 is mounted on a computer independent of the warehouse management system database 15 and the warehouse management system application server 16 and operates. However, the embodiment of the present invention need not be limited to this form. For example, the function of the product storage instruction device 10 to be described later may be implemented in the form of one application that operates on the warehouse management system application server 16.

  The storage unit 11 in FIG. 3 reads and holds the warehouse inventory data 111, the past CS shipment record (hereinafter simply referred to as “shipment record”) 112, and the replenishment record 113 from the warehouse management system database 15 in FIG. ing. In addition, the storage unit 11 holds the allocation order 114 of each inventory PL, the area division priority 115 of the storage area of the warehouse, the storable order width 116, and the inventory PL evaluation value list 117.

  3 calculates the recommended storage location location 110 of the storage PL using the stored PL information 118 read by the input unit 13 and the various data 111 to 117 read from the storage unit 11. 3 includes an input information acquisition unit 121, a location occupation days calculation unit 122, a shipment replenishment touch number calculation unit 123, an evaluation value calculation unit 124, an evaluation value comparison unit 125, and a storage destination determination unit 126. Holding.

  Here, the program modules 121 to 126 are actually written as programs in the storage unit 11. Therefore, the calculation unit 12 reads those programs and executes the processes of steps S1 to S11 described in FIG. 4. In this specification, for the sake of convenience, the subject of the process of each step is any one of the above 121 to 126. It is assumed that the program module is

  FIG. 4 is a flowchart illustrating a processing procedure of the entire product storage instruction apparatus according to the first embodiment of the present invention. Hereinafter, the embodiment of the present invention will be described in detail with reference to FIG.

  Step S1: The evaluation value calculation unit 124 calculates evaluation values for all stocks PL in the storage area in advance, and creates a stock PL evaluation value list 117. Here, the calculation method of the evaluation value of each inventory PL is the same as the calculation method of the evaluation value of the stored PL in steps S3 to S6 described later. The outline of the inventory PL evaluation value list 117 will be described with reference to FIG.

  Step S2: The input information acquisition unit 121 waits for input of a user instruction from the input unit 13. If there is an input of the stored PL (stored PL_ID here) from the input unit 13, the input information acquisition unit 121 proceeds to step S <b> 3, and if there is an end input from the input unit 13, the operation of the entire apparatus is terminated. If there is no input, the input wait is continued.

  Step S3: The input information acquisition unit 121 makes an inquiry to the inventory data 111 based on the PL_ID of the stored PL input from the input unit 13, and stores the PL information (the product ID of the product on the PL, the lot name, the number of Pcs). To get. Here, when executing step S3 for calculating the evaluation value of the inventory PL, the input information acquisition unit 121 acquires the inventory PL information (product ID, lot name, number of Pcs) using the PL_ID of the inventory PL as a key. .

  Step S4: The location occupation days calculation unit 122 stores the product PL using the inventory data 111, the shipping record 112, the replenishment record 113, the allocation order 114, and the stored PL information (product ID, lot name, number of Pcs). If this is done, the number of location occupation days is calculated. When executing step S4 for calculating the evaluation value of the inventory PL, the input information acquisition unit 121 uses the inventory PL information (product ID, lot name, number of Pcs) instead of the stored PL information to calculate the location occupation days. Perform the calculation. Details of the processing in step S4 will be described with reference to FIG.

  Step S5: The shipment replenishment touch number calculation unit 123 calculates the shipment replenishment touch number using the inventory data 111, the shipment record 112, the replenishment record 113, and the stored PL information (product ID, lot name, number of Pcs). . When executing step S5 to calculate the evaluation value of the inventory product, the shipment replenishment touch number calculation unit 123 uses the inventory PL information (product ID, lot name, number of Pcs) instead of the stored PL information to replenish the shipment. Calculate the number of touches. Here, the number of shipment replenishment touches may be calculated as the sum of the number of shipment touches and the number of replenishment touches, but is not necessarily the sum. Details of the processing in step S5 will be described with reference to FIG.

  Step S6: The evaluation value calculation unit 124 calculates the evaluation value of the stored product or the stock product based on the number of shipment replenishment touches and the number of location occupation days. Here, the evaluation value is defined as a larger value as the absolute value of the shipment replenishment touch number is larger and as the absolute value of the location occupation days is smaller. For example, the evaluation value calculation unit 124 may calculate the evaluation value using Expression (1).

Evaluation value = number of shipment replenishment touches / location occupation days (1)

  However, the evaluation value calculation method is not necessarily limited to this formula. For example, if it is predicted that the number of shipping Pcs, the number of supplemented Pcs, the shipping frequency (touch number), or the replenishment frequency (touch number) will be higher than the past shipping record and replenishment record, formula (1) ) Is multiplied by a coefficient larger than 1 to give an instruction to store the product in a good location. By multiplying a small coefficient, it is possible to avoid storing in a good location.

  Note that the evaluation value calculation unit 124 may calculate the evaluation value based on only one of the shipment replenishment touch number or the location occupation day number. Specifically, for example, the evaluation value calculation unit 124 may output the number of shipment replenishment touches as an evaluation value, or use the reciprocal of the location occupation days (that is, the value that increases as the location occupation days are shorter) as the evaluation value. It may be output.

  Step S7: The evaluation value comparison unit 125 compares the evaluation value of the stored product (stored PL evaluation value 119) with the absolute value of the evaluation value of all the inventory PLs on the inventory PL evaluation value list, and stores the PL evaluation value. An evaluation value rank 120 indicating what number (rank) of all PLs including inventory PL and stored PL is obtained.

  Step S8: The storage location determination unit 126 obtains a recommended storage area classification based on the evaluation value rank 120, the predetermined area division priority 115, and the storable rank width 116 of each area division. Here, the area division priority 115 is a priority predetermined for each area division 7 (in other words, the location 6 included in each area division 7). The storable rank width 116 is information that associates the value of the area division priority 115 with the evaluation value of PL that can be stored in the location 6 in the area division 7 to which the priority is given. Next, the storage location determination unit 126 searches for a location where the product can be stored (empty location) in the recommended storage area classification based on the inventory data 111, and if an available location is found, the storage location determination unit 126 finds any location found. The recommended storage location location 110 is determined. If an empty location is not found, an empty location may be searched for in the next priority area division. As a result, the higher the evaluation value PL, the easier it is to store in the location 6 in the area division with higher priority.

  Step S9: The output unit 14 outputs the recommended storage location location 110 determined in step S8.

  Step S10: The input information acquisition unit 121 refers to the location code of the recommended storage location 110 determined in Step S8, and has reserved the column 111b of the data in the row corresponding to the location code in the inventory data 111 (See FIG. 7). Further, the input information acquisition unit 121 records information such as the PL_ID and the product ID of the stored PL in the corresponding fields of the PL_ID 111c to the total Pcs number 111h in the row corresponding to the location code.

  In order to check whether or not the worker (forkman in this example) has actually stored it in the recommended storage location, for example, the input information acquisition unit 121 reads each location that the worker reads at the time of storage. The pasted location code and stored PL barcode data may be acquired to check whether the location code and stored PL_ID match the reserved location code and PL_ID of the inventory data. If they do not match, an error in the storage location can be prevented by notifying the worker via a business portable terminal (handy terminal) (not shown) possessed by the worker.

  Step S11: The evaluation value calculation unit 124 adds the evaluation value of the stored PL and the evaluation value rank 120 to the inventory PL evaluation value list 117. When finished, the process returns to step S2 and waits for input of a user instruction again.

  FIG. 5 is an explanatory diagram of the input of the storage PL in the product storage instruction apparatus according to the first embodiment of the present invention, and specifically shows one form of the input unit 13 described in FIGS. 2 and 3. is there.

  Here, the input unit 13 will be described as a GUI (Graphical User Interface) displayed on the display unit (for example, the output unit 14) of the computer. The user of the product storage instruction device 10 operates the input unit 13 to input the PL_ID uniquely assigned to the pallet on which the stored product is placed into the PL_ID input field 501 and press the execute button 502, so that the product The storage instruction device 10 is instructed to execute a storage destination derivation process. Note that the input unit 13 need not be limited to this form as long as the PL_ID, the product ID of the product on the PL, the lot name, and the number of PCSs can be acquired. For example, a method of acquiring a PL_ID, a product ID of a product on the PL, a lot name, and the number of PCSs by reading a barcode attached to the PL using a barcode reader or a business portable terminal is conceivable.

  FIG. 6 is an explanatory diagram illustrating an example of the recommended storage location location 110 output by the output unit 14 of the product storage instruction apparatus according to the first embodiment of the present invention.

  FIG. 6 illustrates an example in which the output unit 14 is a label printer and the recommended storage location location 110 is output as a label that can be attached to the PL. The user of the product storage instruction apparatus 10 of the present embodiment affixes this label to the storage PL, and the operator carrying the PL looks at the recommended storage location 110 of this label and stores it. However, the output unit 14 does not need to be a label printer. For example, the output unit 14 is a display of a computer, and may output a recommended storage location location 110, or output a recommended storage location of a plurality of storage PLs in a list format. You may do it.

  Here, the actual storage in the recommended storage location 110 is not necessarily performed manually by a worker (Folkman). For example, the output unit 14 outputs the recommended storage location location 110 in a format that can be read by an automated transport robot or an AGV (Automated Guided Vehicle), and the recommended storage location location 110 via the intra-warehouse network 17. If 110 is input to an automatic transfer robot or the like, transfer can be performed unattended. As a result, it is possible to control the storage destination of commodities such as an automatic transfer robot so that the shipping and replenishment work efficiency is increased.

  Hereinafter, the inventory data 111, the shipping record 112, and the replenishment record 113 used in the apparatus of the present invention will be described with reference to FIGS. In the warehouse handled in this example, it is assumed that the lot name of each product represents the expiration date of each product in the yyyymmdd format. Further, in this warehouse, the allocation order 114 shown in FIG. 3 corresponds to the order of expiry date specified by each lot name of each product. That is, it is assumed that provisions are made in order from the earliest date.

  FIG. 7 is an explanatory diagram showing an example of the inventory data 111 held by the product storage instruction apparatus according to the first embodiment of the present invention.

  One line of the inventory data 111 shown in FIG. 7 represents inventory PL information of one location. The inventory data is created for all locations, and the location code 111a of each row is identification information of each location, and the status of the location (any of inventory, empty location, reserved) is recorded in the status 111b. Here, “in stock” indicates that there is some inventory PL, “empty location” indicates that there is no inventory PL and no storage PL is designated as the recommended storage location location 110, and “reserved” Although the inventory PL does not exist, this indicates a state designated as a recommended storage location location 110 of a certain storage PL.

  The PL_ID 111c is the identification information of the inventory PL stored in the location “in stock”, and in the location “reserved”, the location in which the location is designated as the recommended storage location location 110 is stored. It is identification information of PL. The product ID 111d corresponding to the value of each PL_ID 111c is identification information of the item of the product placed on the PL, the lot name 111e is the lot name (expiration date in this embodiment) of the product, and the CS number 111f is the CS number of the product on the PL, CS number 111g is the Pcs number of the product in each CS, and the total Pcs number 111h is the Pcs number of the product on the PL.

  The product storage instruction apparatus 10 according to the present embodiment stores the location code 111a, the state 111b, the PL_ID 111c, the product ID 111d, the lot name 111e, the CS number 111f, the CS number 111g, and the total Pcs number 111h of the storage location. Perform pre-derivation processing.

  Here, there is a relationship represented by the equation (2) between the CS number 111f, CS number 111g, and total Pcs number 111h of a certain location.

Total number of Pcs = number of CS × number of CS input + number of Pcs stored out of case (2)

  FIG. 8 is an explanatory diagram illustrating an example of the shipment record 112 held by the product storage instruction device according to the first embodiment of the present invention.

  The shipment record 112 used in the product storage instruction apparatus 10 of the present embodiment is only record data of CS shipment directly shipped from the storage area 2, and does not include data of loose shipment shipped from the loose area. The shipment record 112 indicates when and what CSs have been shipped from which location, and includes a date and time 112a, a location code 112b, a product ID 112c, a lot name 112d, and a shipment CS number 112e. One line of the shipment record represents one shipment touch (picking of one shipment) from a certain location.

  Note that the commodity storage instruction device 10 of this embodiment can be applied to any type of warehouse as long as one touch to a location can be determined from past shipment results. For example, even in an order pick type warehouse that picks up for each order of a certain ship-to party, the necessary number of picking is performed for each product regardless of the ship-to party and the order, and the products taken after that are shipped for each ship-to party. Even in a total pick type warehouse that sorts by order, the product storage instruction device 10 of this embodiment can be applied.

  FIG. 9 is an explanatory diagram illustrating an example of the replenishment record 113 held by the product storage instruction device according to the first embodiment of the present invention.

  Similar to the shipment record 112, the replenishment record 113 indicates from which location when and what product is replenished to the rose area 3, the date and time 113a, the product ID 113b, the lot name 113c, and the replenishment source location. 113d and the number of supplementary CSs 113e. One line of replenishment results represents one refill touch from a certain location.

  Hereinafter, the calculation method of the location occupation days, the shipment replenishment touch number, and the evaluation value of each PL will be described with reference to FIGS. 10 to 13.

  FIG. 10 is a flowchart illustrating a location occupation days calculation method by the product storage instruction device according to the first embodiment of the present invention. Each step will be described with reference to FIG.

  Step S41: Based on the inventory data 111, the location occupation days calculation unit 122 adds the Pcs number of products on the calculation target product PL to the total inventory Pcs number of the product PL whose allocation order is earlier than the calculation target product PL. Is added as the total accumulated inventory number of the target PL. By defining the total number of stocks in this way, it is possible to determine how many days the product on the PL is consumed from the present when the product on the PL is shipped and replenished according to the order of allocation. It is possible to calculate, and it is possible to predict the location occupation days of each product PL in consideration of the allocation order (that is, the storage period from when each product PL is stored in the location until the location becomes empty).

  Step S42: The location occupation days calculation unit 122 calculates the sum of the average shipment Pcs per day and the average replenishment Pcs number of products on the target PL using the shipment record 112 and the supplement record 113. Here, the average shipment Pcs number and the average replenishment Pcs number are the numbers obtained by dividing the total shipment Pcs number and the total replenishment Pcs number of commodities of a certain item in a certain period by the length (number of days) of the period.

  Step S43: The location occupation days calculation unit 122 calculates the location occupation days of the target PL by the equation (3).

Number of days occupied in location = total accumulated number of each product / (average number of shipping Pcs + average number of supplemented Pcs) (3)

  In addition, as shown in FIG. 1, the above is an example in the case where the shipment results by directly transporting the goods from the storage area 2 to the shipping area 5 and the replenishment results to replenish the rose area 3 are managed separately. However, the present invention can be applied to other cases. For example, when the results of carrying out from the storage area 2 including shipment and replenishment are managed, the above calculation can be performed based on the results. In addition, for example, in the case of a warehouse that is always shipped in units of cases, since the replenishment is not performed, the above calculation can be performed based only on the shipment results. In that case, the denominator of Equation (3) is only the average shipment Pcs number.

  FIG. 11 is a flowchart illustrating a method for calculating the number of shipment replenishment touches by the product storage instruction device according to the first embodiment of the present invention. Each step will be described with reference to FIG.

  Step S51: The shipment replenishment touch number calculation unit 123 counts the number of lines of the shipment results and the replenishment results of the same product (that is, the product of the same item) as the product on the target PL, and adds them up.

  Step S52: The shipment replenishment touch number calculation unit 123 counts the number of Pcs of products on the target PL.

  Step S53: The shipment replenishment touch number calculation unit 123 calculates the number of shipment replenishment touches of the target PL according to Expression (4).

Number of shipment replenishment touches = (number of rows of shipment results of the same product as the target PL + number of rows of replenishment results) * (number of Pcs of products on the target PL / (number of shipment results Pcs of the same product + number of replenishment results Pcs)) ... (4)

  FIG. 12 is an explanatory diagram of an example of evaluation value calculation by the product storage instruction device according to the first embodiment of the present invention. The concept of the evaluation value will be described with reference to FIG.

  FIG. 12 shows, as an example, the allocation status of each stored PL when there are three different stored PLs (PL1 to PS3 in FIG. 12) on a certain day. The vertical axis represents the number of shipment replenishment touches calculated in steps S41 to S43, and the horizontal axis represents the number of days from now. Further, the location occupation days of each PL calculated in steps S51 to S53 are indicated by black circles in FIG. The broken line portion in FIG. 12 represents a period during which the product PL of the same item whose allocation order is earlier than the product on each PL is allocated to the inventory PL. The evaluation value is calculated so as to be larger as the number of days occupied in the location is shorter, and to be larger as the number of shipment replenishment touches is larger. In the example of FIG. 12, the number of replenishment touches for PL1 and PL2 is almost the same, but the evaluation value of PL2 with a short location occupation number is the largest among the three PLs, and this PL is stored in the good location with the highest priority. It should be PL.

  FIG. 13 is an explanatory diagram illustrating an example of the inventory PL evaluation value list 117 created by the product storage instruction device according to the first embodiment of the present invention.

  The inventory PL evaluation value list 117 is an inventory PL arranged in descending order of evaluation values of all the inventory PLs in the storage area calculated in steps S3 to S6 in FIG. 3, and is created in step S1. Specifically, the inventory PL evaluation value list 117 includes an evaluation value rank 117a for each inventory PL, a PL_ID 117b for identifying each inventory PL, a storage location 117c for each inventory PL, and an evaluation value 117d for each inventory PL. Including. The inventory PL evaluation value list 117 is used by the evaluation value comparison unit 125 to calculate the evaluation value rank 120 of the stored PL in step S7 of FIG.

  The evaluation value comparison unit 125 compares the evaluation value of the stored PL with the evaluation value 117d of each inventory PL in the inventory PL evaluation value list 117, and shows the rank of the evaluation value of the stored PL. The evaluated evaluation value rank 120 is calculated. Then, the storage destination determination unit 126 uses the evaluation value rank 120, the preset area division priority 115, the storable rank width 116, and the inventory data 111, and the recommended storage location location 110 of the storage PL. To decide.

  FIG. 14 is an explanatory diagram of the area division priority 115 and the storable order width 116 held by the product storage instruction apparatus according to the first embodiment of the present invention. The area division 115b is identification information (location code) such as the area division 7 determined by dividing the storage area 2 by the user of the product storage instruction device 10 in advance. In addition, it is determined in advance to which area section 7 the location 6 in the storage area 2 is associated. The location 6 in the storage area 2 must be uniquely associated with any one of the area sections 7.

  The priority 115a of the area division priority 115 is a priority set for each area division. The storable rank width 116 is a storable rank width 116a indicating the rank range of evaluation values of PL that can be stored in each area section, and the lowest evaluation among storable evaluation values that can be stored in each area section. The lowest order rank 116b indicating the rank of the value is included.

  A method for determining the area division 115b and a method for setting the area division priority 115a will be described. Any method may be used, but the division may be performed based on the distance from the location to the shipping place 5 and the rose area 3 and the number of shelves in the location. For example, in the storage area, the highest (first) priority is set for the location group belonging to the column where the sum of the distances from the shipping area to the rose area belongs to the first stage, A method is conceivable in which the second priority is set for the location group belonging to the same column and having the second stage number. In FIG. 14, the first three digits of the location code indicate the row 6 of the location in the storage area, the fourth digit indicates the number of shelves in each location, and the first step (251-1) of the 251 row has the priority 1. It is an area division, and an example is shown in which the second row (251-2) in the 251st row is an area division of priority 2.

  FIG. 14 is an example, and the storable order width 116 associates the value of the area division priority 115 with the evaluation value of the PL that can be stored in the location 6 in the area division 7 to which the priority is given. If it is information, it may be different from FIG. Specifically, in the example of FIG. 14, the value of the area division priority 115 is associated with the rank of the PL evaluation value that can be stored in the location 6 in the area division 7 to which the priority is given. However, not the rank but the evaluation value itself may be associated.

  FIG. 15 is an explanatory diagram schematically illustrating a storage recommendation destination determination method by the storage destination determination unit 126 of the product storage instruction apparatus according to the first embodiment of the present invention.

  The product storage instruction device 10 of this embodiment compares the evaluation value rank 120 of the stored PL with the lowest storable rank of each area section, and stores the area section of the priority i satisfying the expression (5) in the stored PL. Determined as a recommended storage area category.

Storable lowest rank of area division of priority i-1 <evaluation value rank of storage PL ≦ lowest rank of storable area division of priority i (5)

  FIG. 15 shows that the recommended storage destination area divisions of the storages PL2, PL1, and PL3 are determined as the priority divisions 1, 2, and 3, respectively. Then, the storage location determination unit 126 searches for an empty location (location where the inventory PL does not exist) in the recommended storage location area classification based on the inventory data 111, and determines an arbitrary empty location as the recommended storage location location 110. . If there is no empty location, any other priority area category may be set as a recommended storage location area category, and an empty location may be searched from the area category. For example, it is conceivable to search for an empty location in an area division having a priority that is one step lower than the priority determined first.

  Next, a method for setting the storable rank width 116a for each area section will be described. Although an arbitrary value (natural number) may be set as the storable rank width 116a of each area section, the possibility that the storage PL is stored in the area section increases as the storable rank width is basically increased. For example, if information on products that arrive in the next day is available, and the number of touches and shipping days for most of those products are expected to be standard, the storage range 116a of each area segment is set to each If the total number of locations in the area classification is the same, or if it is expected that many products with a higher number of replenishment touches than the standard and shorter location occupation days will be received, good location (area classification with high priority) ) Can be stored larger than the total number of good locations. In the latter case, it is considered that a good location is more likely to be vacant than in the standard case, so that the storage location range of good location is increased (in other words, a PL having a lower evaluation value is easily stored). Therefore, good location can be used effectively.

  As shown in FIG. 15, the appearance frequency of each evaluation value is calculated for all the inventory PL, and the statistical value of the distribution (for example, the average value, median value, mode value, variance, standard deviation, etc.) The lowest storable rank (or storable rank width) corresponding to each priority may be determined based on the above.

  Alternatively, the storable order width of each area section may be changed according to the number of empty locations included in each area section. For example, the storage destination determination unit 126 sets the storable order width of the area classification to be larger as the number of empty locations included in the area classification corresponding to the good location is larger, and narrower as the number of empty locations is smaller. Also good. As a result, when there are many empty locations in an area classification with a high priority, ranks of many evaluation values are associated with the area classification (that is, PL with a lower evaluation value can be stored). As a result, in order to prepare for the arrival of PL with a high evaluation value, while securing empty locations in the high-priority area segments, control is performed so that the empty locations do not increase too much in the high-priority area segments. Effective use can prevent a reduction in work efficiency.

  Further, the storable order width 116a can be determined by the following method, for example. That is, based on the stored PL data for the most recent days, the shipment results and the replenishment results in the same period, the storage order was changed for each area classification, and the storage simulation was performed by the method of this embodiment. A storable order width that maximizes the number of shipment replenishment touches (for example, priority 1 and 2 area classifications) may be obtained.

  The lowest storable order 116b of the priority n area section can be obtained by Expression (6).

Storable lowest rank of area division of priority n = total sum of storable rank width of area division from priority 1 to priority (n−1) (6)

  However, when n = 1, the storable order width of priority 1 is the lowest storable order of the priority 1 area section.

  By determining the recommended storage location of the product by the above method, the product PL stored in the location that is easy to ship and replenish (good location) has a large amount of work (for example, the number of shipping replenishment touches). It is possible to carefully select those with a short occupation period (that is, those that have been allocated quickly). As a result, the ratio of the number of shipment replenishment touches from the good location to the ratio of the number of shipment replenishment touches in the entire storage area can always be kept high, and the shipping and replenishment work efficiency can be improved.

  Further, in this method, by comparing the evaluation value of the stored PL with the evaluation value of the entire inventory PL, it is possible to evaluate the shipment replenishment frequency and the location occupation days of the stored PL in comparison with the inventory PL. Therefore, even in a situation where the storage order and plan of the storage PL are not known, it is possible to determine whether or not the storage PL can be stored in the good location by comparing with the inventory PL.

  In addition, in the future, when there is a stored PL that should be stored in a better location than the stored PL (a PL that has a higher number of shipping replenishment touches and a shorter number of days to occupy the location), there is a free space in the high priority area section. It is possible to secure a location.

  In the above example, the evaluation value of each PL is calculated based on both the number of shipment replenishment touches and the number of location occupation days (step S6). As already described, the evaluation value is calculated based on only one of them. You may calculate. For example, the evaluation value may be calculated so that the shorter the location occupation days, the higher the value, regardless of the number of shipment replenishment touches. Even in this case, the PLs that are quickly allocated can be preferentially stored in a good location, thereby improving the shipping and replenishment work efficiency. The same applies to the embodiments after the second embodiment described below.

  Next, a second embodiment of the present invention will be described. Except for the differences described below, each part of the system of the second embodiment has the same function as each part denoted by the same reference numeral in the first embodiment shown in FIGS. Is omitted.

  In the first embodiment, the case where 1 SKU (1 product, 1 lot) is placed on 1 PL has been described. However, in an actual warehouse, commodities of a plurality of SKUs may be mixedly loaded in 1PL (such PL is referred to as mixed PL).

  In this case, the sum of the number of shipment replenishment touches calculated for each of the plurality of SKUs mounted on the mixed load PL can be considered as the number of shipment replenishment touches for the mixed load PL. On the other hand, the largest number of location occupation days calculated for each of the plurality of SKUs included in the mixed-PL can be considered as the location occupation days of the mixed-PL. Regarding the embodiment in this case, only the steps having a change in the flowchart of FIG. 4 are shown below.

  Step S3: When the target PL (that is, the stored PL or inventory PL for which the evaluation value is to be calculated) is the mixed load PL, the input information acquisition unit 121 has the product names, allocation order, and Pcs number of all the products on the mixed load PL. To get.

  Step S4: When the target PL is the mixed-loading PL, the location-occupying days calculation unit 122 calculates the location-occupying days of all commodities on the mixed PL by performing the method of steps S41 to S43 in FIG. 10 for each SKU. And the maximum value is calculated as the location occupation days of the mixed PL.

  Step S5: When the target PL is the mixed load PL, the shipment replenishment touch number calculation unit 123 calculates the number of shipment replenishment touches of all commodities on the mixed PL by the method of steps S51 to S53 in FIG. 11 for each SKU. Then, the sum of them is calculated as the number of shipment replenishment touches for the mixed load PL.

  Step S6: The evaluation value calculation unit 124 calculates an evaluation value using the location occupation days and the number of shipment replenishment touches of the target PL calculated as described above.

  With this method, it is possible to derive a recommended storage destination that increases the work efficiency of the shipment replenishment work for the mixed load PL.

  Next, Embodiment 3 of the present invention will be described. Except for the differences described below, each part of the system of the third embodiment has the same functions as the parts denoted by the same reference numerals of the first embodiment shown in FIGS. Is omitted.

  In the method described in the first embodiment, the shipping frequency and the replenishment frequency of each product are compared, and those having a high shipping frequency are to be stored near the shipping area 5 and those having a high replenishment frequency are to be stored near the rose area 3. There are challenges. Regarding the embodiment for solving the problem, only the steps that are changed in the flowchart of FIG.

  Step S8: The storage location determination unit 126 derives a recommended storage location area section. Thereafter, the storage destination determination unit 126 newly calculates an evaluation value 2 using the following formula (7) for all the empty locations in the derived recommended storage destination area classification, and the empty location where the evaluation value 2 is the smallest. Is determined as the recommended storage location location 110.

  Evaluation value 2 = Number of rows of actual shipments of products on the target PL × Distance to the shipping location of each location + Number of rows of replenishment results × Distance to the rose area of each location (7)

  Here, in the case of mixed loading PL, the storage location determination unit 126 calculates the evaluation value 2 using the following equation (8), and sets the empty location where the evaluation value 2 is the minimum as the recommended storage location location 110.

  Evaluation value 2 = sum of the number of rows of shipments of all products on the target PL × distance to the shipping area of each location + sum of the number of rows of replenishment results of all products on the target PL × to the rose area of each location Distance (8)

  As a result, products that have a higher number of touches than the replenishment touch can be stored near the shipping area 5 in the same area classification, and products that have a higher number of touches than the shipment touch can be stored near the rose area 3. It becomes possible to improve the work efficiency of work and replenishment work.

  Next, a fourth embodiment of the present invention will be described. Except for the differences described below, each part of the system of the fourth embodiment has the same function as each part denoted by the same reference numeral of the first embodiment shown in FIGS. Is omitted.

  In step S4 and step S5 of the first embodiment, the number of shipment replenishment touches and the number of location occupation days are obtained using past shipment results and replenishment results. However, with this method, it is not possible to obtain a storage location for a new product for which no past shipment record or replenishment record exists. In that case, it is only necessary to predict the number of shipment replenishment touches and the number of days occupied by the location using the shipment replenishment record of existing products that are similar in characteristics to the new product. Regarding the embodiment in this case, only the steps in the flowchart of FIG.

  FIG. 16 is a flowchart illustrating processing executed by the product storage instruction apparatus according to the fourth embodiment of the present invention. In the fourth embodiment, step S3 in FIG. 4 is replaced with steps S31 to S36 shown in FIG.

  Step S31: The input information acquisition unit 121 acquires the product ID, the allocation order, and the number of Pcs in the storage PL.

  Step S32: The input information acquisition unit 121 determines whether the product ID of the product on the target PL exists in the shipment record or the replenishment record.

  Step S33: (When the determination result of Step S32 is No) The input information acquisition unit 121 displays a list of all product IDs and product names that appear in the shipping record and the supplementary record on the output unit 14. Here, the output unit 14 may compare the product name of the product on the target PL with the character string of the product name of the product appearing in the shipment record and the replenishment record, and display a partial match preferentially.

  Step S34: The input unit 13 notifies the input information acquisition unit 121 of the product ID of the similar product selected by the user.

  Step S35: The input information acquisition unit 121 acquires the product ID of the similar product, the number of Pcs of the product on the target PL, and the allocation order.

  As a result, it is possible to obtain a storage location that increases the work efficiency of the shipping work and the replenishment work for the new product.

  Next, a fifth embodiment of the present invention will be described. Except for the differences described below, each part of the system of the fifth embodiment has the same function as each part denoted by the same reference numeral of the first embodiment shown in FIGS. Is omitted.

  When storing a plurality of PLs carrying the same product at the same time, it is assumed that the recommended storage location locations 110 of those products PL are desired to be gathered nearby. Regarding the embodiment in that case, only the steps having the change in the flowchart of FIG.

  Step S3: The input information acquisition unit 121 inputs a plurality of stored PL names carrying the same product into the PL_ID input field 501 of the input unit 13 shown in FIG. When the button 502 is pressed, it is regarded as storing a plurality of PLs of the same product. If there is a product with a different product ID, an error is returned to step S2.

  Step S8: The storage location determination unit 126 derives a recommended storage location area section. If the same number of empty locations as the number of stored PLs input in step S3 are serial numbers (that is, there are empty locations adjacent to each other), the storage destination determining unit 126 determines those locations as the recommended storage destination location. 110 is determined. If there are not enough free locations in the serial number, the storage location determination unit 126 determines the recommended storage location location 110 with the serial number only for the amount that is sufficient, and for the shortage, any free space in the recommended storage location area. Search the recommended storage location from the location.

  As a result, when a plurality of PLs carrying the same product are stored at the same time, the storage location locations can be grouped so as to be adjacent to each other, and the efficiency of the storage operation is improved.

  Next, a sixth embodiment of the present invention will be described. Except for the differences described below, each part of the system of the sixth embodiment has the same functions as the parts denoted by the same reference numerals in the first embodiment shown in FIGS. Is omitted.

  When the storage PL stored in the bad location is instructed to be stored in the bad location through the processing of the first embodiment, when the number of days has passed and the provision of shipping or replenishment is expected to start, the storage PL is A situation where the efficiency of shipping replenishment work is desired to be improved by moving to a good location is assumed.

  In this case, the location of the recommended movement destination can be obtained by performing the processing of steps S1 to S9 again for the stored product PL using the product storage instruction device and obtaining the recommended storage destination. In this case, since the number of days occupied by the location of the product PL is smaller than when the recommended storage destination is derived for the first time, the evaluation value increases, so that an instruction to move to the good location is derived.

  Thereby, it is possible to increase the work efficiency of the shipment replenishment of the commodity stored in the bad location.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment. For example, in each embodiment, a distribution warehouse where both shipping work and replenishment work exist is assumed, but it is not always necessary to be a warehouse where both works exist. For example, in the case of a warehouse only for shipping work (no replenishment work) or only for replenishment work (no shipping work), the first to sixth embodiments may be performed using only one of the shipping results or the replenishment results. For example, the same effect as described in this specification can be obtained.

  Further, the present invention can be applied not only to a distribution warehouse that handles commodities but also to an application for determining the arrangement of any type of article such as parts on a production site. For example, in a production site, there is a case where a sudden order (limited express project) that does not exist in the production plan is received, and it is required to secure a certain amount of space in a location near the assembly site in preparation for such a case. . If the present invention is applied to the production site, parts that are frequently used and have a short period (days) until they are consumed can be placed in a good location. It is possible to secure a location.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for better understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function is stored in a non-volatile semiconductor memory, a hard disk drive, a storage device such as an SSD (Solid State Drive), or a computer-readable non-readable information such as an IC card, an SD card, or a DVD. It can be stored on a temporary data storage medium.

  Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

Claims (13)

A storage unit that holds inventory information indicating the storage state of articles at each of a plurality of storage positions in the warehouse and the quantity of stored inventory articles, the shipment results of articles, and the priority of each storage position; ,
A storage period calculation unit for estimating a storage period of the received article based on the amount of the received article, the amount of the inventory article, and the actual shipment;
A storage position determining unit that determines, based on the storage period and the priority, any empty storage position where no article is stored as a storage position where the received article is stored;
An output unit for outputting the determined storage position. The warehouse management system according to claim 1,
The warehouse management system, wherein the storage position determination unit determines a storage position where the received article is stored so that the storage position is stored in the storage position having a higher priority as the storage period is shorter. The warehouse management system according to claim 2,
The warehouse includes a plurality of sections,
Each of the plurality of sections includes a plurality of the storage locations;
The priority is given for each category,
The storage unit further holds storable article information that associates the priority with a storage period of storable articles,
The storage position determining unit determines an empty storage position included in the section given a priority corresponding to a storage period of the received article as a storage position where the received article is stored. And warehouse management system. The warehouse management system according to claim 3,
The storage position determination unit sets the storable article information so that an article having a longer storage period can be stored as the number of empty storage positions included in the section increases. Warehouse management system. The warehouse management system according to claim 3,
It further has an evaluation value comparison unit,
The storable article information includes information associating the priority with a rank of a storage period of storable articles,
The storage period calculation unit estimates the storage period of all inventory items already stored in each storage position based on the amount of inventory items already stored in each storage position and the actual shipment,
The evaluation value comparison unit compares the storage period of the inventory item already stored in each storage position with the storage period of the received article, thereby comparing the inventory item already stored in each storage position. Calculate the rank of the storage period of the received goods with respect to the storage period,
The storage position determination unit determines an empty storage position included in the section given a priority corresponding to a storage period ranking of the received article as a storage position where the received article is stored. A warehouse management system characterized by The warehouse management system according to claim 5,
The storage position determination unit sets the storable article information such that the greater the number of empty storage positions included in the section, the greater the number of ranks of the storage periods associated with the section. A warehouse management system characterized by The warehouse management system according to claim 3,
When an article of a single item stored in a plurality of the storage positions arrives, the storage position determination unit includes a plurality of adjacent items included in the section given a priority corresponding to a storage period of the received goods. An empty storage position is determined as a storage position where the received goods are stored. The warehouse management system according to claim 1,
Each article is packed in a case containing a plurality of articles and stored in each storage position.
The warehouse includes a single item storage area for storing items taken out of the case,
The storage unit further holds a replenishment record that is a record of refilling the single item storage area with an article taken out of the case,
The storage period calculation unit estimates a storage period of the received goods based on the shipping record and the replenishment record. The warehouse management system according to claim 8,
Based on the shipment results and the replenishment results, a work amount calculation unit that estimates a work amount for the received goods,
An evaluation value calculation unit that calculates an evaluation value of the received article so as to increase as the storage period is shorter and as the work amount increases.
The warehouse management system, wherein the storage position determination unit determines a storage position where the received article is stored so that the higher the evaluation value is, the higher the priority is stored in the storage position. The warehouse management system according to claim 9,
The warehouse includes a plurality of sections,
Each of the plurality of sections includes a plurality of the storage locations;
The priority is given for each category,
The storage unit further holds storable article information that associates the priority with an evaluation value of a storable article,
The workload calculation unit
Based on the shipping results, estimate the amount of work for shipping the received goods,
Based on the replenishment results, estimate the amount of work for replenishing the received goods,
The storage position determination unit
When the amount of work for shipment is larger than the amount of work for replenishment, among a plurality of empty storage positions included in the section given a priority corresponding to the evaluation value of the received article A storage position closer to the shipping area where the work is performed is determined as a storage position where the received goods are stored,
When the amount of work for replenishment is larger than the amount of work for shipping, among the plurality of empty storage positions included in the section given priority corresponding to the evaluation value of the received goods, A warehouse management system, wherein a storage position closer to a single item storage area is determined as a storage position where the received goods are stored. The warehouse management system according to claim 1,
The shipment record includes information on the shipment record for each item of the article,
The storage period calculation unit estimates the storage period of an article for each item based on the amount of the article for each received item and the shipping record when an article of a plurality of items stored in one storage position is received. And the warehouse management system characterized by estimating the longest thing among them as the storage period of the said goods received. The warehouse management system according to claim 1,
An input unit for inputting information on the item, quantity, and shipping order of the received goods;
The inventory information includes information on the quantity of items in stock and shipping order for each item,
The shipment record includes information on the shipment record for each item of the article,
The storage period calculation unit calculates the actual quantity of articles shipped per unit period based on the actual shipment of articles of the same item as the received articles, and the quantity of the received articles and the inventory articles Of these, the total of the same items as the received goods and the quantity of the articles shipped earlier than the received goods is divided by the actual quantity of articles shipped per unit period. The warehouse management system characterized by estimating the storage period of the finished goods. A warehouse management method executed by a computer having a calculation unit, a storage unit connected to the calculation unit, and an output unit connected to the calculation unit,
The storage unit stores inventory information indicating the storage state of articles at each of a plurality of storage positions in a warehouse and the amount of stored inventory articles, the actual shipment of articles, and the priority of each storage position. Hold and
The warehouse management method includes:
The calculation unit estimates a storage period of the received goods based on the amount of received goods, the amount of the stocked goods, and the shipping record;
The calculation unit determines, based on the storage period and the priority, any empty storage position where no article is stored as a storage position where the received article is stored;
And a procedure for outputting the determined storage position by the output unit.

Images