JP2013245088A - Sorting facility and sorting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sorting facility and a sorting method with high operation efficiency, in which preceding picking can be performed without waiting for the vacancy of a temporary placing table.SOLUTION: An article 11 to be put in a collected article container 10 in a branch conveying unit B2 is subjected to preceding picking from a storage shelf 17 to a temporary placing container 83 before the collected article container 10 is branched and conveyed to the branch conveying unit B2. A plurality of temporary placing containers 83 are placed on a temporary placing table 90, and the correspondence of the article 11 in the temporary placing container 83 with the collected article container 10 into which it is to be put is displayed on a wireless display 85 attached to the temporary placing container 83. Accordingly, an operator H in charge of input can acquire, even when a plurality of temporary containers 83 are present, into which of the collected article containers 10 the article 11 stored in each temporary placing container 83 is to be put without confusion, and an operator H in charge of preceding picking can continuously perform preceding picking without bothering the operation progress of the operator H in charge of input. Consequently, the operation efficiency can be enhanced.

Description

  The present invention relates to a sorting facility and a sorting method for sorting a predetermined article into a predetermined collection container according to a sorting destination.

In distribution centers and warehouses for various goods in logistics, goods are collected and sorted. For example, in a distribution center, an operation according to an order from a customer (sorting destination) is picked and sorted into a plurality of areas (specifically, stored in containers such as collection containers), so-called picking work is performed. It has been broken.
In the basic form of such picking work, for example, a collection container transport means such as a belt conveyor is divided into a plurality of work zones along the moving direction of the transport means, and each work zone has its work zone. Zone-exclusive workers are assigned.
This worker is based on the picking instruction indicating the item request information of the sorting destination assigned to each collection container (information such as which sorting destination is requesting which kind of product and how many items). For the sorting destinations that have picked up the necessary quantity of goods from the storage shelves where the goods are stored and that require the picked goods out of the collection containers transported by the belt conveyor Work to store (inject) into the collection container.

In a sorting facility in which such a picking operation is performed, a branch may be provided in the transport unit. For example, in the sorting facility described in Patent Document 1, a belt conveyor as a transport unit has a branching portion that branches from the main transport path in addition to the main transport path. And, a main storage unit that stores articles that are frequently taken out is provided along the main conveyance path, and a sub-storage unit that stores articles that are not frequently taken out is provided corresponding to the branch part, and frequently Articles that are not taken out are stored away from the belt conveyor.
When the article to be stored in the collection box (collection container) on the belt conveyor is an article stored in the sub-storage unit, the collection box is stopped at the branch point, and the operator Then, after the collection box is moved to the branching section, it goes to the secondary storage section located away from the belt conveyor to take out the target article and bring it to the collection box on the branching section.
For this reason, in the method described in Patent Document 1, an operator must go to the sub-storage unit every time a collection box for storing articles stored in the sub-storage unit is conveyed. Therefore, if the collection box that should store the articles stored in the secondary storage unit has been transported many times, the worker will go to the secondary storage unit many times, There was a problem that the efficiency of work) was poor.
In addition, wave due to customer (sorting destination) order bias (area quantity / time zone) is unavoidable, and the amount of work in the sub-storage unit varies with time, so the collection box is easily transported to the branching unit. There was a risk that the efficiency of the entire sorting work would be reduced, such as waiting time for workers without being done, or conversely, a large number of collection boxes were transported to the branching section and could not be handled quickly .
Therefore, in order to level the amount of work in the sub-storage unit, a temporary storage table as described in Patent Document 2 is provided in the area for storing articles in the sub-storage unit, and the customer (sorting destination) places an order. According to (article request information), a method of performing a pre-picking operation in which an article stored in a branched collection box is preliminarily placed in advance on a temporary placement table is conceivable.

In Patent Document 2, a plurality of temporary placement tables are provided, and each temporary placement table includes a first display unit that displays that the article is temporarily placed and a corresponding container (object storage target). And a second display section for displaying that the article to be stored in the container is a temporary storage table temporarily stored.
Providing such a temporary storage base improves the efficiency of the article storage work and can also prevent the occurrence of troubles such as the wrong container for storing articles.

JP 2005-119809 A JP 2005-089162 A

However, in the temporary table as described in Patent Document 2, the preceding picking operator confirms on the display unit which temporary table the article brought up to the temporary table should be temporarily placed. It is necessary to take time to do.
In addition, even when the temporary storage table as described in Patent Document 2 is provided in the secondary storage unit, because the number of temporary storage tables is limited, due to the bias of customer orders (area quantity / time zone), Alternatively, the temporary storage table becomes full due to a delay in the work progress of the worker (input worker) who takes out the articles from the temporary storage table and puts them into the collection box (collection container), and temporarily stores the articles. The preceding picking worker who cannot perform the preceding picking must wait for the input work to progress and the temporary table to be free, and responds to the preceding picking for (according to) the next customer order. There was a problem that work efficiency was not good.

  Therefore, according to the present invention, in a sorting facility in which the transport means has a branch transport unit, even if the collection container into which the article is to be put is transported many times, the operator needs to go to the place where the article is stored many times. It is another object of the present invention to provide a sorting facility and a sorting method with high work efficiency, in which a preceding picking operator can perform preceding picking without waiting for the progress of the input work.

  In order to solve the above-described problems, the invention described in claim 1 of the present invention is a sorting facility for sorting articles into a plurality of collection containers to which sorting destination article request information is assigned. A transport unit having a branch transport unit that branches from a branch point provided in the transport unit and the main transport unit, and transporting the collection container; and the branch transport of the collection container from the main transport unit at the branch point Branching means for transporting to a part, a storage area for storing a plurality of articles to be put into the collection container in the branch transport part, and an article to be put into the collection container in the branch transport part, A preceding picking container that is pre-picked from the storage area and stored, a temporary storage area that is provided along the branch conveyance unit and in which a plurality of preceding picking containers can be arranged, and responds to the article request information. Based on the article request information, an article to be put into the collection container is stored in the storage area before the collection container transferred to the branch conveyance unit by the branching unit reaches the branch point. A controller for forming take-out data including storage position information relating to the location being placed, and a wireless indicator attachable to the preceding picking container, wherein the wireless indicator receives the take-out data from the controller by wireless communication. By receiving, the storage position information is displayed to the worker who performs the preceding picking, and after the preceding picking is completed, it corresponds to the collection container to which the article stored in the preceding picking container is to be input. It is characterized in that it can be displayed.

  With the configuration described above, an operator who performs prior picking can pick an article to be put into the collection container in the branch conveyance unit while confirming the display on the wireless display before the collection container reaches the branch point. Therefore, the articles to be put into the collection container in the branch conveyance unit are stored in the preceding picking container at an early stage and temporarily placed in the temporary placement area. Then, the loading operator grasps in which collection container the article stored in which preceding picking container is to be loaded, using a wireless display attached to the preceding picking container.

  The invention according to claim 2 is the sorting equipment according to claim 1, wherein a temporary placement table on which a plurality of preceding picking containers can be placed is provided in the temporary placement area. The placed preceding picking container is configured to be slidable on the temporary table.

  With the above-described configuration, when the preceding picking container that has been emptied by removing the article is removed from the temporary placing table, it is easy to bring another preceding picking container into the space that is vacant on the temporary placing table.

  Further, the invention according to claim 3 is the sorting equipment according to claim 1 or claim 2, wherein an input object display for displaying a collection container into which an article is to be loaded is displayed in each of the plurality of collection containers. Means is provided, and the controller stores a display corresponding to the display of the wireless display attached to the preceding picking container disposed in the temporary storage area for storing the article to be input into the collection container. It is characterized by causing the display means to perform.

  With the configuration described above, it becomes easy for the worker in charge to know which article storage unit should be put into which collection container.

  According to a fourth aspect of the present invention, there is provided a sorting method for sorting articles to a plurality of collection containers to which article request information of sorting destinations is assigned. A first state in which the collection container is transported by a transport unit having a branch transport unit that branches from a branch point provided, and displays the storage position information of the articles in a storage area where a plurality of articles are stored; A second state of performing a display corresponding to the collection container, and performing a work using a wireless display device having the second state, and the collection container in the branch conveyance unit according to the display of the wireless display in the first state The picking process for picking up the articles to be put into the storage area and storing them in the preceding picking container, and the temporary picking container provided along the branch transport unit. A temporary placing step disposed in the branching step, a branching step of transferring the collection container from the main transport unit to the branch transporting unit in accordance with the article request information at the branching point, and the wireless indicator in a second state In accordance with the state transition step of transitioning to the state and the display of the wireless display in the second state, the articles stored in the preceding picking container are collected on the branch transport unit corresponding to the display of the wireless display. And an input process for supplying the product to the product container, wherein the preceding picking process for each product container is performed before the branching process for the product container.

  By the above method, the operator who performs the preceding picking can pick the article to be put into the collection container in the branch transport unit while confirming the display of the wireless display prior to the branching process. The articles to be put into the collection container are stored in the preceding picking container at an early stage and temporarily placed in the temporary placement area. Then, the input operator can grasp which pre-picking container the article stored in which collection container should be input by the wireless display.

  The invention described in claim 5 is the invention described in claim 4, characterized in that in the preceding picking step, the preceding picking for a plurality of collection containers is performed in parallel.

  By the above method, the frequency of reciprocation between the temporary storage area and the storage area by the worker who performs the preceding picking can be further suppressed.

  According to the sorting equipment and the sorting method according to the present invention, picking can be performed before the collection container reaches the branching point, and even if a plurality of temporary storage containers are arranged in the temporary storage area, Therefore, the worker in charge of preceding picking can continuously perform the preceding picking without worrying about the work progress status of the input worker, and the work efficiency is improved.

It is a top view which shows the branch conveyance part periphery of the sorting equipment in embodiment of this invention. It is a perspective view which shows the temporary placement stand in the same equipment. It is a perspective view which shows the preceding picking container in the same equipment. It is a front view which shows the storage shelf for low frequency goods in the equipment. It is a perspective view which shows the collection container in the equipment. It is a block diagram which shows the relationship between each structure in the equipment. It is a flowchart which shows the flow of work in the equipment.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.
The sorting facility according to the present embodiment collects articles that have been ordered (ordered) from individual pre-registered users (an example of sorting destinations), and each user's order (sorting destination article request information) is allocated. In the following, as an example of an embodiment of the present invention, a main transport unit and a branch transport unit are provided in a transport unit that transports a collection container into which articles are charged. The sorting equipment is explained.

FIG. 1 shows some of the work zones Z in which picking and loading are performed among the sorting equipment in the present embodiment. As shown in FIG. 1, the sorting facility includes a storage line A in which articles 11 to be collected are stored and a conveyance line B in which a collection container 10 into which picked articles 11 are input is conveyed in the direction of arrow X. And is divided into a plurality of work zones Z along the storage line A and the transfer line B.
In addition, the storage line A is a high-frequency item storage line A1 in which a frequently requested item (high-frequency item) or a medium frequency item (medium-frequency item) among the items 11 to be collected is stored. And the low-frequency product storage line A2 for storing a relatively low number of required items (low-frequency products), and the work zone Z is also divided along the high-frequency product storage line A1. The high-frequency product zone Z1 is divided into a plurality of high-frequency product zones Z1 and a low-frequency product zone Z2 positioned downstream of the high-frequency product zone Z1 and partitioned along the low-frequency product storage line A2.

As shown in FIG. 1, the transfer line B has a branch point Ba where a branch device Bx as a branching unit is provided at the boundary between the high-frequency product zone Z1 and the low-frequency product zone Z2. In Ba, the transfer line B is branched into a main transfer unit B1 and a branch transfer unit B2, and the branching device Bx is directed to the collection container 10 on the main transfer unit B1 transferred to the branch point Ba. In accordance with the article request information assigned to the collection container 10, it is determined whether or not to transfer to the branch conveyance unit B2, and the collection arm 10 to be transferred to the branch conveyance unit B2 It is transferred to the branch conveyance section B2 by a method such as extruding with an unillustrated). In addition, branch conveyance part B2 joins main conveyance part B1 in the downstream end.
In the present embodiment, the main transport unit B1 and the branch transport unit B2 are configured by a conveyor 18 as transport means for transporting the collection container 10. The conveyor 18 is preferably designed as an accumulation conveyor that can store and move the collection containers 10 one at a time and can collect the collection containers 10 so that they do not collide with each other.

  Then, a zone RFID reader as a means for detecting that the collection container 10 has been conveyed to each work zone Z at a boundary portion between each work zone Z, that is, at a predetermined interval along the conveyor 18 (details). Are provided later. In the following, among these zone RFID readers, the upstream end of the high frequency product zone Z1 upstream from the low frequency product zone Z2 is the upstream zone RFID reader 41, and the upstream end of the low frequency product zone Z2 is the self zone RFID. This is referred to as a reader 42. Each work zone Z (high frequency product zone Z1 and low frequency product zone Z2) is provided with a tape switch 19 along the main transport unit B1 and the branch transport unit B2.

  Although not shown here, in the downstream of the range shown in FIG. 1 in the transport line B, a sealing area for sealing the article 11 in the collection container 10 that has been transported by the transport line B after the picking operation is completed, From the refill area, the refill area in which the sealed article 11 (collected article 11) of the collection container 10 that is arranged further downstream from the seal area and has been transported by the transport line B is refilled into a collection box (shipping box). A bagging area or the like for placing a bag on the collection container 10 (the collection container 10 that has been emptied after the refilling of the articles 11) carried by the conveyance line B is arranged. The collection container 10 bagged in the bagging area can be conveyed again to the work zone Z by using the conveyance line B as a circulation line.

  As shown in FIG. 1, the high-frequency product storage line A <b> 1 includes a plurality of multistage multi-row flow racks 15 along the transfer line B in which a plurality of high-frequency products and medium-frequency products 11 are stored. One high-frequency product zone Z1 is set for each predetermined interval along the flow rack 15, and an operator H who picks the article 11 from the flow rack 15 and puts it into the collection container 10 has the high-frequency product zone Z1. One person is arranged for each Z1. Further, the flow rack 15 is replenished with articles 11 of high frequency products and medium frequency products sequentially. In addition, although the high frequency goods zone controller which controls the picking operation | work in a zone is provided for every high frequency goods zone Z1, description about this high frequency goods zone controller is abbreviate | omitted.

In the low-frequency product storage line A2, as shown in FIG. 1, a temporary storage area 80 is provided in an area along the branch conveyance unit B2. The temporary storage area 80 is a temporary storage base in which a plurality of temporary storage containers 83 (an example of a preceding picking container) that can store articles 11 of low-frequency products are placed side by side with a wireless display 85 to be described later attached thereto. 90 (this is constituted by a free roller as shown in FIG. 2), a temporary storage container place 93 in which a plurality of temporary storage containers 83 to which the wireless display 85 is not attached are stacked, and a picking container 81 ( An example of a preceding picking container; a container shown in FIG. 3, which will be described in detail later), a picking container place 91 in which a plurality of the display units are stacked with the wireless display 85 attached, and a picking container 81 to which the wireless display 85 is not attached. A plurality of unused picking container storage areas 92 and a general-purpose space 94 in which various surplus containers can be temporarily stored. To have.
Between the temporary storage area 80 and the branch conveyance unit B2, the work of taking out the article 11 from the temporary storage container 83 on the temporary storage table 90 and putting it into the collection container 10 on the branch conveyance unit B2 (low frequency) A worker H in charge) is placed in the product zone Z2.

Further, a storage shelf 17 (an example of a storage area) in which low-frequency, high-variety goods 11 are stored is provided behind the temporary storage area 80 (on the side opposite to the conveyance line B). In the area where the storage shelf 17 is provided, an operator H who is in charge of the work of picking the article 11 from the storage shelf 17 and carrying it to the temporary storage area 80 is arranged. In the present embodiment, since the work performed by the worker H is performed prior to the arrival of the collection container 10 in the low-frequency product zone Z2, this work is hereinafter referred to as a preceding picking work.
Although not shown in FIG. 1, the low-frequency product zone Z2 is provided with a low-frequency product zone controller 60 (FIG. 6) for managing work (input work and preceding picking) in the low-frequency product zone Z2. ing.

  As shown in FIG. 4, the storage shelf 17 includes a plurality of regions (storage units) in which low-frequency articles 11 can be placed in multiple stages and multiple rows, and each storage unit has an address (storage position information). A storage unit label 20 that is set in advance and indicates an address of the storage unit is attached to each storage unit.

Here, the worker H in charge of the preceding picking performs the preceding picking work using the picking container 81 shown in FIG. The main body of the picking container 81 is formed of a rectangular container that can store the low-frequency article 11, and a wireless display 85 is attached to the upper edge of the container. As will be described in detail later, the worker H in charge of the preceding picking temporarily stores the article 11 taken out from the storage shelf 17 in the picking container 81 and then carries it to the temporary placement area 80.
The wireless indicator 85 attached to the picking container 81 is the same as that attached to the temporary container 83 on the temporary holder 90, and various information can be displayed on the outer surface of the wireless indicator 85. A digital display unit 85a and a wireless display button 85b that is a push button switch with a lamp that can be lit in a plurality of colors (for example, red and green) are provided. Further, inside the wireless display 85, an ID memory (not shown) in which a unique display number is recorded for each wireless display 85, a wireless device (not shown) for transmitting and receiving various information, and this A wireless display controller (not shown) that is connected to the wireless device and the ID memory and controls display of lamps of the digital display unit 85a and the wireless display button 85b and transmission / reception of various information is provided. The wireless display 85 is detachably attached to the picking container 81 and the temporary storage container 83, which are the preceding picking containers, by attaching means such as a clip (not shown).

The wireless display controller of the wireless display 85 has the following functions.
<Standby function>: The lamps of the digital display unit 85a and the wireless display button 85b are turned off (display is canceled), and the standby state in which nothing is performed is maintained until the wireless display button 85b is pressed (operated). function.
<Retrieving data reception function>: When the wireless display button 85b is operated in the above-described standby state, a signal requesting the retrieval data described later and its own display number are sent to the low frequency product zone controller 60 (FIG. 6). A function for storing the picked-up state (first state) when the take-out data is received from the low-frequency product zone controller 60 by transmitting by wireless communication.
<Picking display function>: A function of displaying information such as the address of the storage shelf 17 included in the stored extraction data on the digital display unit 85a in the above-described picking state. When the extracted data includes a plurality of addresses, the display on the digital display unit 85a is switched to the next address in the extracted data every time the wireless display button 85b is operated.
<Temporary placement display standby function>: When the wireless display button 85b is further operated after all addresses in the extracted data are displayed, extraction confirmation data including its own display number is transmitted to the low frequency product zone controller 60. At the same time, a display indicating the end of the preceding picking (for example, “End”) is displayed on the digital display unit 85a, and it waits until temporary placement display data to be described later is received from the low frequency product zone controller 60, and the temporary placement display data is displayed. A function of transitioning to the temporary placement state (second state) when received.
<Temporary placement display function>: A function of displaying the order number (article request information) assigned to the collection container 10 included in the received temporary placement display data in the temporary placement state described above.

Further, as shown in FIG. 5, the collection container 10 into which the articles 11 are transported in the transport line B is composed of a box-shaped container 25 and is charged in the high-frequency product zone Z1 and the low-frequency product zone Z2. A loading indicator 26 as loading object display means for displaying that the collection container 10 is to be loaded, into which the article 11 is loaded, is attached to the side face that can be read by the worker H in charge. The input indicator 26 includes a digital display unit 26a capable of displaying various information, a first input display lamp 26b capable of emitting light in a predetermined color (for example, red), and a color (for example, different from the first input display lamp 26b). And a second input indicator lamp 26c capable of emitting light in green. The collection container 10 is conveyed by the conveyance line B in a state where the bag 27 is hung in a bag hanging area (not shown) provided upstream from the range shown in FIG.
Here, the loading indicator 26 stores an order number (an example of article request information) of a user (an example of a sorting destination) assigned to each collection container 10 and a loading indicator number unique to each loading indicator 26. Collecting container RFID 10a (IC tag that can be read and written by short-range wireless communication) as a means, a wireless device (not shown), and a digital display unit 26a, a first input display lamp 26b, and a second input connected to the wireless device A display controller for controlling the display of the display lamp 26c is incorporated. Then, in an area upstream from the work zone Z, for example, a bag hanging area (not shown), an order number, which is a number assigned for each user order, is written into the collection container RFID 10a via the wireless device. The order number, that is, the article request information is assigned to the collection container 10. The order number is displayed on the digital display unit 26a under the control of the display controller.

RFID readers (upstream zone RFID reader 41, own zone RFID reader 42 in FIG. 1) provided at the boundary of each work zone Z are from collection container RFID 10a built in input indicator 26 of collection container 10; The order number assigned to the collection container 10 and the input indicator number of the input indicator 26 are read.
Here, as shown in FIG. 6, the self-zone RFID reader 42 is connected to the branch device Bx and the low-frequency product zone controller 60.

  Although not shown in FIG. 1, the low-frequency product zone Z2 includes a first wireless device 71 (FIG. 6) that transmits and receives data between the wireless display 85 and the low-frequency product zone controller 60, and an input display. 26 and a low-frequency product zone controller 60 are provided with a second wireless device 72 (FIG. 6) that transmits and receives data.

Further, in the sorting facility of this embodiment, the low frequency product zone controller 60 (FIG. 6) for managing work in the low frequency product zone Z2 is configured by a computer, and as shown in FIG. The own zone RFID reader 42, the first wireless device 71, the second wireless device 72, and the branch device Bx are connected.
The low frequency product zone controller 60
A take-out control unit 61 for controlling the take-out of the article 11 from the storage shelf 17;
A display control unit 63 for controlling the display of the wireless display 85;
A first memory 66 for storing picking data input in advance;
A second memory 67 for storing pre-input storage shelf data;
A third memory 68 for storing correspondence between the order number and the display number unique to each wireless display 85, and temporary placement data including a temporary placement flag described later;
When the order number assigned to the collection container 10 conveyed to the low-frequency product zone Z2 and the input indicator number specific to each input indicator 26 are read by the own zone RFID reader 42, the order number and the input indicator are displayed. A fourth memory 69 for storing the correspondence with the number;
have.
Here, the picking data is data related to the article 11 to be put into the collection container 10 in the low frequency goods zone Z2, and this is data of orders ordered from each user (for example, the above-mentioned order number, It is preliminarily calculated from data specifying each user such as a user number, data specifying the article 11 such as an article ID attached to the article 11, and data of the requested quantity. In the present embodiment, the picking data includes the order number assigned to the collection container 10 to be transferred to the low frequency product zone Z2 (article request information of the sorting destination requesting the low frequency product) and the order. This is data consisting of the item ID and quantity of the item 11 corresponding to the number (stored in the storage shelf 17). The picking data is created in advance by a computer (not shown) higher than the low frequency product zone controller 60 and then input to the low frequency product zone controller 60. The upper computer is used for inputting data related to each user's order.
The storage shelf data is data related to the articles 11 stored in the storage shelf 17, and information (articles) specifying the address of each storage unit of the storage shelf 17 and the articles 11 stored in the storage unit. ID etc.) are associated with each other.

Next, each part in the low frequency product zone controller 60 will be described.
[About the extraction control unit 61]
As shown in FIG. 6, the take-out control unit 61 is connected to the first memory 66, the second memory 67, the third memory 68, and the first wireless device 71, and has the following functions.
<Extraction data creation function>: When a signal requesting extraction data and a display number are transmitted from the wireless display device 85 via the first wireless device 71, they are included in the picking data stored in the first memory 66. One order number is selected, the article ID of the article 11 corresponding to the order number is obtained, the storage shelf data in the second memory is searched for the obtained article ID, and the article 11 of the article ID is stored. A function of obtaining an address of the stored part and creating take-out data including the selected order number, the obtained storage part address (storage position information), the article ID of the article 11 and the requested quantity. One retrieval data may include a plurality of storage unit addresses and article IDs corresponding to one order number (for example, when one user requests plural kinds of articles 11). .
Further, when the picking data stored in the first memory 66 does not exist (when the preceding picking for all the order numbers has been completed), work completion information indicating that the work has been completed is created as extraction data. To do.
<Extraction data output function>: A function of transmitting (outputting) the extraction data created by the extraction data creation function to the wireless display 85 that has transmitted a signal requesting the extraction data via the first wireless device 71. By this output, the wireless display device 85 is in a picking state, and the digital display unit 85a has a storage unit address (information on the position where the article 11 corresponding to the order number is stored) included in the take-out data and the requested quantity. Will be displayed. When the extracted data is work end information, a display indicating work end (for example, “AllEnd”) is performed.
<Temporary placement data creation function>: Indicates the order number selected by the extraction data creation function, the display number of the wireless display 85 that has transmitted a signal requesting the extraction data, and whether or not the preceding picking has been completed. A function of creating temporary placement data in combination with a temporary placement flag taking a binary value (here, “YES” or “NO”), setting the temporary placement flag to “NO”, and storing it in the third memory 68.
<Temporary placement flag update function>: When take-out confirmation data is transmitted from the wireless display device 85 via the first wireless device 71, temporary placement data in the third memory 68 for the display number included in the removal confirmation data. A function to search for and update the temporary placement flag corresponding to the display number to “YES”.

[Display Control Unit 63]
As shown in FIG. 6, the display control unit 63 includes a tape switch 19, a first wireless device 71, a second wireless device 72, a first memory 66, a third memory 68, and a fourth memory 69. It is connected.
The first wireless device 71 connected to the extraction control unit 61 and the first wireless device 71 connected to the display control unit 63 are the same, but are performed based on transmission / reception of signals with the extraction control unit 61. Since the operation is different from the operation performed based on the signal transmission / reception with the display control unit 63, the first wireless device 71 (and the wireless display device 85 wirelessly communicating with the wireless communication device 85) in FIG. The left side is divided into the right side, the left side is an operation performed based on signal transmission / reception with the extraction control unit 61, and the right side is illustrated based on signal transmission / reception with the display control unit 63.
The display control unit 63 has the following functions.
<Wireless display 85 specific function>: The collection container 10 (collected in the input display 26 of the collection container 10 which has been read by the own zone RFID reader 42 and stored in the fourth memory 69 and transported to the low frequency product zone Z2). The order number and the input indicator number assigned to the product container RFID 10a) are read from the fourth memory 69, and the temporary placement flag is “YES” in the temporary placement data in the third memory 68 for the order number. A function of searching for a thing and specifying a display device number (having a wireless display device 85) corresponding to the reader number read by the self-zone RFID reader 42.
<Temporary placement display data and input display data formation / output function>: When the display number corresponding to the order number read by the self-zone RFID reader 42 can be specified, the order number, the specified display number, A function of forming temporary placement display data including lamp color designation information (for example, red) and transmitting (outputting) the temporary placement display data to the wireless display 85 via the first wireless device 71. Further, the same order number as that included in the temporary placement display data, the input indicator number read from the fourth memory 69 corresponding to this order number, and the same lamp color designation information as that contained in the temporary placement display data. , And a function of transmitting (outputting) the input display data to the input indicator 26 via the second wireless device 72. By this output, the order number is displayed on the digital display portion 85a of the wireless display 85 having the display number included in the temporary display data, and the lamp of the wireless display button 85b is lit red, and the input display is made. The first input indicator lamp 26b of the input indicator 26 having the input indicator number included in the data is also lit in red.
Here, if the display number corresponding to the received order number cannot be specified (if the received order number does not exist in the temporary data), nothing is output and the display number can be specified. However, if the temporary placement flag is “NO”, information indicating that the preceding picking is not completed (for example, command information displayed as “NotYet”) is output.
<Display cancellation function>: When the tape switch 19 is pressed (operated), the temporary display data and the input display data that are being transmitted are changed to data including a display cancellation command, and temporary storage in the third memory 68 is performed. Among the data, the data related to the order number paired with the display number included in the temporary display data being transmitted is deleted, and the picking data in the first memory 66 corresponding to the order number and the fourth A function for erasing data relating to the input indicator number in the memory 69.
Upon receiving the display cancel command, the input indicator 26 turns off the first input indicator lamp 26b (releases the display), and the wireless indicator 85 turns off the lamps of the digital display unit 85a and the wireless indicator button 85b (displays the display). To release.

The above is the configuration of various devices related to the work zone Z in the present embodiment.
Next, the work of each worker and the operation of the sorting equipment will be described. In the high-frequency product zone Z1, picking work based on the order number read by the upstream zone RFID reader 41 is performed. However, the description of the picking work in the high-frequency product zone Z1 will be omitted. Will mainly describe the low-frequency product zone Z2.

[About preceding picking]
The worker H who is in charge of the preceding picking work takes out the picking container 81 to which the wireless display 85 in the standby state is attached from the picking container storage 91 at the start of the work, and operates the wireless display button 85b.
When the wireless indicator button 85b is operated, the wireless indicator 85 determines that the use is started, and the take-out control unit of the low-frequency product zone controller 60 (via the first wireless device 71) by the take-out data reception function described above. 61) A signal requesting the fetched data and its own display number are transmitted. At this time, a display (for example, “Start”) indicating the fetched data reception waiting state is performed on the digital display unit 85a.
The take-out control unit 61 of the infrequent goods zone controller 60 that has received the signal requesting the take-out data uses the above-mentioned take-out data creation function to obtain the order number from the picking data in the first memory 66 and the storage shelf data in the second memory 67. And take-out data including information such as a storage section address where the article 11 corresponding to the order number is stored. Then, the created extracted data is transmitted through the first wireless device 71 with the display number received from the wireless display 85 by the extracted data output function, and the temporary data creating function described above. Thus, the correspondence between the order number and the display number used this time and the temporary placement flag set to “NO” are recorded in the third memory 68 as temporary placement data.
The wireless display device 85 that has received the extracted data via the first wireless device 71 confirms whether or not the data has been transmitted to itself by confirming the display number attached to the extracted data, and transmits it to itself. If it is confirmed that the received data has been received, the received data is stored and a picking state is entered.
The wireless indicator 85 in the picking state uses the above-described picking display function to display the address of the first storage unit (the address of the storage unit in which the article 11 corresponding to the order number is stored) and the requested quantity included in the stored retrieval data. It displays on the digital display part 85a.
The worker H who is in charge of the preceding picking work moves with the picking container 81 to the storage section at the displayed address in the storage shelf 17 in accordance with the display on the digital display section 85a. Upon arrival at the storage unit, the worker H in charge of the preceding picking work confirms that the display of the storage unit label 20 matches the display of the digital display unit 85a, and the article 11 stored in the storage unit. Are taken out and stored in the picking container 81, and the wireless display button 85b is operated (preceding picking step S1 shown in FIG. 7).
When the wireless display button 85b is operated, the wireless display 85 determines that the picking of the article 11 from the first address included in the take-out data is completed, and the next address and the requested quantity are displayed on the digital display unit 85a. indicate. When picking from all addresses included in the retrieval data is completed (when there is no next address), the above-mentioned temporary placement display standby function allows the retrieval confirmation data including its own display number to be sent to the low frequency product zone. While transmitting to the controller 60, the display (for example, "End") which shows completion | finish of preceding picking is displayed on the digital display part 85a.
When the worker H in charge of the preceding picking work confirms the display of “End”, the picking container 81 containing the article 11 is carried to the temporary placement area 80.
When the low-frequency product zone controller 60 receives the take-out confirmation data from the wireless display 85 via the first wireless device 71, the wireless display 85 that has sent out the take-out confirmation data by the temporary placement flag update function described above. The temporary placement flag corresponding to the display number is updated to “YES”.
In addition, in the stage where the wireless display button 85b of the wireless display 85 is operated, when the preceding picking for all the order numbers is completed, work end information is transmitted to the wireless display 85 as take-out data, The wireless display device 85 that has received the work end information performs a display (for example, “AllEnd”) indicating the work end on the digital display unit 85a for a certain period of time. By this display, the worker H in charge of the preceding picking work can recognize that all the preceding picking work has been completed.

[Regarding Placement of Temporary Placement Container 83 on Temporary Placement Table 90 (Temporary Placement)]
When the worker H in charge of preceding pick-up arrives at the temporary storage table 90 in the temporary storage area 80 shown in FIG. 1, the temporary storage container 83 is moved from the temporary storage container storage area 93 to the temporary storage table 90 and placed thereon. The article 11 stored in 81 is transferred to the temporary storage container 83. Then, the wireless display 85 is removed from the picking container 81 and replaced with the temporary storage container 83 (in a direction that can be read by the worker H in charge of the loading operation) (temporary storage process S2 shown in FIG. 7).
Then, the worker H in charge of the preceding picking places the picking container 81 from which the wireless display 85 has been removed in the unused picking container storage 92, and starts the next preceding picking work. That is, the picking container 81 to which the wireless display 85 is attached is taken out from the picking container storage 91, and the wireless display button 85b is operated to go to the storage shelf 17 again.
When there is a temporary storage container 83 that is empty after the article 11 is taken out on the temporary storage base 90, the worker H in charge of the preceding picking places the empty temporary storage container 83 in the temporary storage base 90. Then, the other temporary storage container 83 is slid and brought into a space vacated on the temporary storage table 90. Then, the wireless display device 85 is removed from the removed temporary storage container 83, the temporary storage container 83 is stacked on the temporary storage container storage place 93, and the wireless display 85 is attached to the picking container 81 of the unused picking container storage place 92. 81 is moved to the picking container storage 91.
Further, when a large number of temporary storage containers 83 are placed on the temporary storage base 90 and cannot be placed any more (when full), the surplus temporary storage containers 83 are temporarily placed in the general-purpose space 94. deep. Even when the picking container storage 91, the unused picking container storage 92, and the temporary container storage 93 are full, various surplus containers are placed in the general-purpose space 94.

[Branching from the main transport section B1 to the branch transport section B2]
When the collection container 10 is conveyed to the low-frequency product zone Z2, as shown in FIG. 6, the order number assigned to the collection container 10 by the own zone RFID reader 42 connected to the branch device Bx. Is transmitted to the branch device Bx.
The branching device Bx searches the picking data in the first memory 66 of the low frequency product zone controller 60 for the transmitted order number, and picking data corresponding to the order number (collection container in the low frequency product zone Z2). It is checked whether or not there is data on the article 11 to be input 10.
When there is picking data corresponding to the order number, the transported collection container 10 is pushed out toward the branch transport section B2 by a push arm (not shown) at the branch point Ba. Transfer from the main transport unit B1 to the branch transport unit B2. When the picking data corresponding to the order number does not exist, extrusion is not performed, and the transported collection container 10 is transported as it is downstream from the branch point Ba in the main transport section B1 (shown in FIG. 7). Branching step S3).

[About the operation of loading the article 11 into the collection container 10 in the low-frequency product zone Z2]
When the collection container 10 is transported to the low-frequency product zone Z2, the order number assigned to the collection container 10 by the own zone RFID reader 42 is sent to the fourth memory 69 of the low-frequency product zone controller 60. And the input indicator number of the input indicator 26 is transmitted. The fourth memory 69 stores the transmitted order number and input indicator number as a pair.
The display control unit 63 of the low-frequency product zone controller 60 sets the temporary placement flag of the temporary placement data in the third memory 68 for the order number stored in the fourth memory 69 by the above-described wireless display 85 specifying function. A search is made for “YES”, and the display number corresponding to the order number read by the self-zone RFID reader 42 is specified.
If there is a display number corresponding to the order number, the temporary placement display data and the insertion display data are respectively sent to the first wireless device 71 and the second wireless device by the temporary placement display data and insertion display data formation / output function. It is output via the device 72.
The wireless display device 85 that has received the temporary placement display data checks the display number included in the temporary placement display data to check whether the data has been transmitted to itself. A transition is made to the standing state (state transition step S4 shown in FIG. 7). Then, with the temporary placement display function described above, the order number included in the temporary placement display data is displayed on the digital display unit 85a, and the lamp of the wireless display button 85b is designated by the lamp color designation information included in the temporary placement display data. Lights up in red (here red).
In addition, the loading indicator 26 that has received the loading display data confirms whether or not the data has been transmitted to itself by confirming the loading indicator number included in the loading display data. The lamp 26b or the second insertion display lamp 26c is lit in the color specified by the lamp color designation information included in the insertion display data (here, the first insertion display lamp 26b is lit in red).
The worker H in charge of charge inputs the order number displayed on the input indicator 26 in which the first input indicator lamp 26b is lit in red and the wireless indicator 85 in which the wireless indicator button 85b is lit in red. Is confirmed to match the order number displayed on the screen, and the article 11 is taken out from the temporary storage container 83 to which the wireless indicator 85 is attached, and is put into the collection container 10 (injection step S5 shown in FIG. 7). .
When the articles 11 in the temporary container 83 have been put into the collection container 10, the tape switch 19 is pressed (operated). When the tape switch 19 is operated, an operation signal of the tape switch 19 is transmitted to the low frequency product zone controller 60 (the display control unit 63 thereof).
When the operation signal of the tape switch 19 is received, the low-frequency product zone controller 60 (the display control unit 63) determines that the loading operation has been completed, and the temporary display data being transmitted and the By changing the input display data to data including a display release command, the first input display lamp 26b or the second input display lamp 26c of the input indicator 26 is turned off (display is canceled), and the digital signal of the wireless display 85 is displayed. The lamps of the display unit 85a and the wireless display button 85b are also turned off (display is canceled). Further, of the temporary placement data in the third memory 68, the data related to the order number paired with the display number included in the temporary placement display data being transmitted is deleted, and the data corresponding to the order number is deleted. The picking data in the first memory 66 and the data relating to the input indicator number in the fourth memory 69 are also deleted.
The wireless display 85 that has received the display cancellation command and canceled the display enters a standby state, and waits by the above-described standby function until the wireless display button 85b is operated again.
The worker H in charge of returning returns the collection container 10 to which the input indicator 26 in which the first input indicator lamp 26b or the second input indicator lamp 26c is turned off is attached to the main transport unit B1. Further, the wireless display 85 whose display is released is removed from the temporary container 83, the temporary container 83 is returned to the temporary container storage place 93, and the removed wireless display 85 is picked up in the picking container 81 of the unused picking container storage place 92. And the picking container 81 is moved to the picking container storage area 91. Then, the worker H who is in charge moves to the next loading operation.
When the loading operation is busy, the wireless indicator 85 is not replaced and the empty temporary container 83 is left on the temporary table 90. In this case, the worker H who is in charge of the preceding picking changes the wireless display 85 as described above.
The input operation (for each collection container 10) for each order number as described above is executed in the order in which the order numbers are stored in the fourth memory 69.

As described above, according to the present embodiment, since the worker H in charge of the preceding picking work and the worker H in charge of the input work are separated, the collection container 10 is transported to the branch transport unit B2. The worker H who is in charge of the input work does not have to go to the storage shelf 17 each time, and the preceding picking work is started when the picking data is input to the low-frequency product zone controller 60 (first memory 66 thereof). Therefore, it can be executed before the collection container 10 reaches the branch point Ba. As a result, the article 11 to be put into the collection container 10 in the branch conveyance section B2 is stored in the temporary storage container 83 and temporarily stored in the temporary storage area 80 at an early stage. In addition, the worker H in charge of input indicates which collection container 10 the article 11 stored in which temporary storage container 83 should be input into which first input display lamp 26b (or second input display) of the input indicator 26. The lamp 26c), the lamp of the wireless display button 85b of the wireless display 85 in the temporarily placed state, and the order number displayed on the digital display 26a of the on-display 26 and the digital display 85a of the wireless display 85. I can grasp without confusion. Accordingly, the worker H in charge of the preceding picking can continuously perform the preceding picking without worrying about the work progress status of the worker H in charge of the input, and the work efficiency is improved.
In addition, according to the present embodiment, since the preceding picking work can be continuously performed regardless of the time until the collection container 10 arrives at the branch point Ba, the waiting time due to the variation in arrival time does not occur, and the work Increases efficiency.
In addition, according to the present embodiment, the worker H in charge of the preceding picking can perform the preceding picking according to the display of the wireless display 85 attached to the picking container 81. Therefore, the handy terminal that cares about the handling is provided. There is no need to carry. Further, it is only necessary to attach the storage unit label 20 indicating the storage unit address to the storage shelf 17, and it is not necessary to provide the storage shelf 17 with a complicated mechanism using an electronic circuit such as a digital display or a button.
In addition, according to the present embodiment, the temporary placement table 90 is configured by a free roller on which a plurality of temporary placement containers 83 can be placed. In this case, there is no need to consider which temporary placement container 83 should be placed on which temporary placement base 90, and the work efficiency of temporary placement is increased. Further, when the number of temporary storage containers 83 placed on the temporary storage base 90 is increased, it is possible to further place the temporary storage containers 83 by reducing the interval (space) between the temporary storage containers 83. The temporary table 90 is not easily full. Even when the full capacity is reached, the temporary storage container 83 may be placed in the general-purpose space 94, and the temporary picking table 90 is not full, so that the progress of the preceding picking work is not delayed.
Further, according to the present embodiment, since the temporary placement table 90 is a free roller, when the temporary placement container 83 that has been emptied by taking out the article 11 is removed from the temporary placement table 90, Since it is possible to slide another temporary storage container 83 (which still contains the article 11 and heavy) without lifting it, the space on the temporary storage table 90 can be easily packed. is there.

  In the present embodiment, the picking container 81 and the temporary storage container 83 as the preceding picking containers are separate containers, and the article 11 is transferred and the wireless display 85 is replaced in the temporary storage area 80. However, the picking container 81 and the temporary container 83 may be used as the same preceding picking container. For example, the picking container 81 may be used as it is as the temporary container 83 by placing it on the temporary table 90. In this case, since the transfer of the article 11 and the replacement of the wireless display 85 are not necessary, the work efficiency is increased. Moreover, since the space (the unused picking container storage area 91 and the temporary storage container storage area 93) for storing the container from which the wireless display device 85 has been removed is not required, the space utilization efficiency of the facilities is also increased.

  In the present embodiment, a single-stage free roller is used as the temporary placement table 90, but a temporary storage shelf having a plurality of stages of shelves may be provided in the temporary placement area 80 instead. In this case, the temporary storage container 83 can be disposed in a larger amount in the temporary storage area 80, and the possibility that the temporary storage area 80 becomes full is further reduced.

  In the present embodiment, the worker H in charge of preceding picking takes only one picking container 81 to go to the storage shelf 17 and performs the preceding picking. The picking containers 81 may be carried at a time, for example, and a plurality of picking containers 81 may be picked at a time in accordance with the respective indications of the wireless indicators 85 of the picking containers 81 loaded on the carriage. In this case, preceding picking corresponding to a plurality of order numbers (that is, preceding picking for a plurality of collection containers 10) is performed in parallel, and the reciprocation frequency between the temporary storage area 80 and the storage shelf 17 Is further suppressed, and work efficiency is further increased.

In the present embodiment, the wireless display 85 is switched to the temporary placement state by transmitting temporary placement display data. However, the connection terminal for the wireless display 85 is connected to the picking container 81 and the temporary placement container 83. , And the state of the wireless display 85 may be switched depending on which container is connected to the connection terminal.
In the present embodiment, the picking container 81 is configured as a container. However, this may be any container that can store the article 11, and may be a shopping basket that has a handle and is easy to carry.

Further, in the present embodiment, the input indicator 26 performs a display that matches the display of the wireless display 85 so that the worker H in charge of the input can easily recognize, but corresponds to the display of the wireless indicator 85. As long as the operator H can recognize that he / she is doing, a display different from the display of the wireless display 85 may be used.
Further, in the present embodiment, the conveying means is the conveyor 18, but any means capable of conveying articles may be used, for example, a free roller or a carriage.
In the present embodiment, the collection container RFID 10a is built in the input indicator 26. However, this may be provided corresponding to each of the collection containers 10, and inside the input indicator 26, Alternatively, it may be provided outside.
In the present embodiment, only one low-frequency product zone Z2 is shown. However, two or more low-frequency product zones Z2 provided with the same branch conveyance unit B2 and temporary storage area 80 may be provided.

DESCRIPTION OF SYMBOLS 10 Collection container 11 Goods 17 Storage shelf 60 Low frequency goods zone controller 80 Temporary storage area 81 Picking container 82 Temporary storage container 85 Wireless indicator

Claims (5)

A sorting facility that sorts articles into a plurality of collection containers to which goods request information of a sorting destination is assigned,
A transport means for transporting the collection container having a main transport section and a branch transport section that branches from a branch point provided in the main transport section;
Branching means for transferring the collection container from the main transport unit to the branch transport unit at the branch point;
A storage area in which a plurality of articles to be put into the collection container are stored in the branch conveyance unit,
A preceding picking container in which an article to be put into the collection container in the branch conveyance unit is stored by being pre-picked from the storage area;
Temporary placement area provided along the branch conveyance unit, where a plurality of preceding picking containers can be arranged,
Articles to be put into the collection container based on the article request information before the collection container transferred to the branch conveyance unit by the branching unit according to the article request information reaches the branch point A controller for forming take-out data including storage location information relating to the location stored in the storage area;
A wireless indicator attachable to the preceding picking container;
With
The wireless indicator displays the storage position information to an operator who performs preceding picking by receiving the take-out data by wireless communication from the controller, and after the preceding picking is completed, the preceding picking container is displayed. The sorting facility is characterized in that a display corresponding to the collection container into which the articles stored in the container are to be put is possible. In the temporary placement area, a temporary placement table on which a plurality of preceding picking containers can be placed is provided.
The sorting equipment according to claim 1, wherein the temporary placement table is configured such that the placed preceding picking container is slidable on the temporary placement table. Each of the plurality of collection containers is provided with an input target display means for displaying a collection container into which articles should be input,
The controller stores the article to be thrown into the collection container and causes the throwing object display means to perform display corresponding to the display of the wireless display attached to the preceding picking container disposed in the temporary placement area. The sorting facility according to claim 1, wherein the sorting facility is provided. A sorting method for performing an operation of sorting articles to a plurality of collection containers to which goods request information of a sorting destination is assigned,
Transporting the collection container by transport means having a main transport unit and a branch transport unit that branches from a branch point provided in the main transport unit;
Using a wireless indicator having a first state for displaying storage position information of articles in a storage area in which a plurality of articles are stored and a second state for displaying corresponding to the collection container Do the work,
In accordance with the display of the wireless indicator in the first state, the preceding picking step of pre-picking the article to be put into the collection container in the branch transport unit from the storage area and storing it in the preceding picking container;
A temporary placement step of placing a preceding picking container in a temporary placement area provided along the branch conveyance unit;
A branching step of transferring the collection container from the main transport unit to the branch transport unit according to the article request information at the branch point;
A state transition step of transitioning the wireless display to a second state;
A loading step of loading an article stored in a preceding picking container into the collection container on the branch conveyance unit corresponding to the display of the wireless display according to the display of the wireless display in a second state; With
The sorting method, wherein the preceding picking process for each collection container is performed prior to the branching process for the collection container. The sorting method according to claim 4, wherein in the preceding picking step, the preceding picking for a plurality of collection containers is performed in parallel.

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