JPH04121906U - picking device - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the number of stacker crane operations and shorten picking time. [Structure] A stacker crane 19 is installed to take pallets into and out of the rack 13, and a transfer device 26 is installed near the stacker crane 19.
will be established. Picking stations 30a, 30b, 31a, 31b, and 31c are provided along the stacker crane, and rails 33 are provided so that the transfer device can move along the picking stations. The stacker crane is
Multiple single product loading pallets 11 taken out from the rack
at each picking station. The transfer device picks up a predetermined number of each single type of article from each picking station and transfers them to the empty pallet 17 on the pallet conveying device 35, forming a multi-type loading pallet loaded with multiple types of articles and making the empty pallet. Discharge to picking station.
If the type to be transferred to the next empty pallet is the same,
The transfer device can immediately move on to the next picking without returning the single-item loaded pallet to the rack. Therefore, the number of operations of the stacker crane is reduced and the picking time is shortened.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention takes out items from a single-item loading pallet and places them on an empty pallet. This invention relates to a picking device for making seed loading pallets.

0002

[Conventional technology]

Conventionally, as a picking device, Japanese Patent Application Laid-Open No. 1-275309 and 1-2753 No. 10, No. 2-52807, No. 1-55161, No. 1-181610, Special Publication No. 60-197530, No. 61-33424, and Special Publication No. 2-17445 The following are proposed.

0003 For these, pallets loaded with single products are stored in racks and stacked from there. A lane or forklift is used to take out the pallet, and a transfer device transports the pallet. By transferring goods from carts to empty pallets, pallets with a wide variety of products were created. There is. For example, the device disclosed in Japanese Patent Application Laid-Open No. 1-275309 has a configuration as shown in FIG. ing.

0004 In other words, storage racks 2 for single-item loading pallets 1 and storage racks for multi-item loading pallets 3 Pipe racks 4 are arranged in parallel, and a transfer device 5 is installed at an intermediate position between them. There is. A stacker rack is provided between the transfer device 5 and the single-item loading pallet storage rack 2. crane 6 and the single-item loading pallet taken out from the rack 2 by the stacker crane 6. A depalletizing conveyor 7 for conveying the 1 is disposed. Transfer equipment 5 and various types Between the loading pallet storage rack 4 and the loading pallet storage rack 4, there is a transfer device 5 on the single product loading pallet 1. a palletizing conveyor 9 that conveys an empty pallet 8 to which articles are to be transferred; The multi-product loading pallet 3 made on the Tides conveyor 9 is stored on the multi-product loading pallet. A stacker crane 10 for transferring to the rack 4 is arranged.

[0005] The picking operation by this picking device is performed as follows. First, the stacker crane 6 unloads several single-product loading pallets 1 from the rack 2. Take it out onto the palletizing conveyor 7. Meanwhile, the empty pallet 8 is placed on the palletizing conveyor. 9 carries it to the vicinity of the transfer device 5. Next, the transfer device 5 selects each single product loading pallet 1. Various articles are transferred onto the empty pallet 8 and stacked.

[0006] The stacker crane 10 carries the multi-product loading pallet 3 made in this way. It is imported into block 4.

[0007]

[Problem that the idea aims to solve]

However, in most of the conventional picking devices mentioned above, the transfer device 5 is fixed. It is a formula. For this reason, each time a multi-product loading pallet 3 is completed, the depalletizer The single-item loading pallet 1 on the conveyor belt 7 is returned to the rack by the stacker crane 6, and the next The stacker crane 6 moves the single-product loaded pallet 1 to be transferred onto the empty pallet 8. Then, it is necessary to carry it out from the rack 2 onto the depalletizing conveyor 7. Therefore, the star The load on crane 6 may become too high and the picking time may become longer. There is a problem.

[0008] On the other hand, the method described in Japanese Patent Publication No. 2-17445 is a method that moves the transfer device. ing. However, since this does not use a stacker crane, the load on the transfer equipment The problem is that the cost becomes too high and the picking time becomes long. This invention reduces the load on the stacker crane and balances it with the load on the transfer equipment. The aim is to shorten the picking time by taking the following steps.

[0009]

[Means to solve the problem]

In order to solve the above problems, the present invention is designed to move pallets in and out of racks. A stacker crane and a single product taken out from the rack by the stacker crane. A predetermined number of each single product from multiple single product pallets loaded with only the following items: A multi-product loading pallet with many different products is removed and transferred onto an empty pallet. In the picking device having a transfer device that forms a single product loading pallet, a plurality of picking stations on which the kits and the multi-product loading pallets are selectively placed; a stacker crane and at least one empty pallet storage station. the picking station and the picking station; mounted on a rail movably along the empty pallet storage station, and The transfer device receives empty pallets taken out from the empty pallet storage station. The above-mentioned multi-item loading obtained by placing goods on the empty pallet at the same time as loading the goods on the empty pallet. A pallet transport device is provided for discharging the pallets to the picking station. The system adopts a new configuration.

0010

[Effect]

When forming multi-product loaded pallets, the transfer device acts as a storage station for empty pallets. The empty pallet is then moved on the rail towards the vinegar. Meanwhile, the stacker crane takes out pallets loaded with multiple types of single products from the rack. and place it on the picking station.

[0011] The transfer device handles individual items according to the order in which items should be stacked on empty pallets. Moves on the rail near the seed-loaded pallet and stacks the goods on top of the empty pallet. . The empty pallet is filled with goods as originally intended, forming a multi-product loaded pallet. When the pallet is loaded, the pallet transport device transfers this multi-product loaded pallet to the empty picking station. transfer to the section.

0012 On the other hand, a stacker crane is used to load single-product pallets on a picking station. return to the rack. In order to make the next multi-product loading pallet, the stacker crane is The pallet loaded with a single product is taken out to the picking station, and the transfer device picks up the empty pallet. Remove the kit from the storage station onto the pallet transport device and perform the same operation as above. repeat.

[0013]

【Example】

Hereinafter, embodiments of the picking device according to the present invention will be explained based on FIGS. 1 to 4. do. This picking device has a structure as shown in Figures 1 to 3, and the overall structure is as shown in Figures 1 to 3. It is stored in an automated warehouse.

[0014] Inside the automated warehouse, there are single-product loading pallets 11 and multi-product loading pallets 12 (Figure 4 2 rows of outer storage racks 13, 14 having multiple shelf sections for selectively storing are arranged in parallel at regular intervals. Additionally, two rows of external storage racks 13 , 14, two rows of inner storage racks 15, 16 are suspended from the ceiling. I'm getting lost.

[0015] Note that the single-product loading pallet 11 here refers to a pallet loaded with only a single-product product. The multi-product loading pallet 12 refers to the single-product pallets 11a, 11 of multiple products. By selecting an arbitrary number of items from b and 11c and transferring them onto the empty pallet 17. (See Figure 4). Between the inner and outer storage racks 13, 14, 15, and 16, the above-mentioned Stacker cranes 18 and 19 are provided for loading and unloading pallets. 2 units The stacker cranes 18 and 19 have the same structure.

[0016] To explain only one stacker crane 18, it consists of two main cranes. Equipped with an elevating unit 21 that can be ascended and descended along the strike 20, this elevating unit 21 has a A fork table 22 with a lifter is provided. Fork table with lifter 2 2 has a slide fork 23 that can move in and out of each shelf. Ma In addition, the upper and lower main masts 20 of the stacker crane 18 can be moved to desired shelves. Rails 24a, 24b, 25a, 25 laid between the inside and outside storage racks so that It is engaged with b.

[0017] As a result, storage racks 13, 14, 15, 16 and stacker cranes 18, 1 9, the single-product loading pallet 11 or the multi-product loading pallet 12 is transferred between It is now possible to A stacker crane 1 is located approximately in the center between the two stacker cranes 18 and 19. 8 and 19 are multiple single item stacks taken out from storage racks 13, 14, 15, and 16. A transfer device that takes out a predetermined number of articles from the loading pallet 11 and transfers them onto the empty pallet 17 A station 26 is provided.

[0018] The transfer device 26 includes a transfer device main body 27 and an arm provided on the transfer device main body 27. 28, and a picking head 29 provided at the tip of the arm 28. This transfer device 26 uses a picking head 29 to move the single product loading pallet 11 Grasp the article on top and swing the arm 28 to transfer the article onto the empty pallet 17 It is controlled so that each article is transferred in a pre-programmed order.

[0019] With such a transfer device 26, a multi-product loading pallet 12 is formed. Become. A stacker crane is provided between the stacker cranes 18 and 19 and the transfer device 26. Picking stations 3 are located along rails 24a and 25a, which are lane movement paths. Storage stations 32 for 0, 31 and empty pallets 17 are arranged at regular intervals. Ru.

[0020] Since there are two stacker cranes 18 and 19, picking station 3 0a, 30b, 30c, 31a, 31b, 31c, 31d are arranged in two rows. It is. The picking stations 30 and 31 are the stacker cranes 18 and 19. This table is used to transfer pallets to and from the fork 23, and is used for single-product loading pallets. The kit 11 and the multi-product loading pallet 12 are selectively placed.

[0021] The empty pallet 17 storage station 32 stacks a large number of empty pallets 17. It is a table that supports things. Note that this empty pallet storage station 32 has two rows of picking stations. Instead of a picking station, a picking station is provided at one location in one row of the queue. The transfer device 26 moves between the rows of the picking station along each row. It is movably mounted on a rail 33.

[0022] Specifically, the transfer device main body 27 is placed on the trolley 34, and the trolley 34 is placed on the rail. The output shaft of the servo motor installed on the trolley 34 slides on the top of the truck 33. A pinion (not shown) is arranged along the rail 33 with a rack (not shown) and a rack (not shown) arranged along the rail 33. They mesh together. Under the control of the servo motor, the transfer device 26 performs a predetermined picking process. It will stop exactly at the station location.

[0023] Further, the arm 28 of the transfer device 26 allows the transfer device 26 to move on the rail 33 at a desired location. all picking stations 30a, 30b, 30c by moving to , 31a, 31b, 31c, 31d and the empty pallet storage station 32. There is a bar available. A pallet transport device 35 is mounted on the trolley 34 and can be driven in a direction perpendicular to the rails 33. It is set in Noh.

[0024] The pallet conveyance device 35 is, for example, driven by a predetermined motor (not shown) in this case. This is a chain conveyor driven by This pallet transport device 35 is moved to an empty pallet storage station by a transfer device 26. The empty pallet 17 taken out from the container 32 is placed on top of the empty pallet 17, and the empty pallet 1 Picker with empty multi-product loading pallet 12 obtained by placing goods on 7 It is designed to be discharged to a processing station.

[0025] Next, a series of operations of the picking device will be explained. The trolley 34 moves on the rails 33 toward the empty pallet storage station 32, A transfer device 26 takes out the empty pallet 17 from there onto a pallet transport device 35. On the other hand, the stacker cranes 18 and 19 are A plurality of single-item loading pallets 11 are taken out and moved to a picking station. put it on.

[0026] Then, according to the order in which the articles should be stacked on the empty pallet 17, the corresponding single articles are stacked. The cart 34 moves on the rail 33 to the vicinity of the seed loading pallet 11, and the loading is carried out each time. The device 26 transfers the articles from the corresponding single-item loading pallet 11 onto the empty pallet 17. Transfer and stack them one by one. Goods are stacked on the empty pallet 17 according to the initial purpose, resulting in a multi-product loading pallet 1. 2 is formed, the pallet transport device 35 empties this multi-product loading pallet 12. transferred to a picking station.

[0027] On the other hand, the stacker cranes 18 and 19 stack single items on the picking station. Return the loaded pallet 11 to the rack. Then, in order to make the next multi-product loading pallet 12, the stacker cranes 18, 1 9 picks the desired single product loading pallet 11 from the racks 13, 14, 15, 16. The trolley 34 moves on the rail 33, and the The transfer device 26 transfers the empty pallets 17 from the storage station 32 to the pallet transfer device. 35 and repeat the same operation as above.

[0028] Here, the operation of the picking device according to the present invention will be explained using FIGS. 5 and 6. Let's compare it with the operation of a conventional picking device. The comparison consists of two items: the number of operations of the stacker crane and the number of transfers of the transfer device. The contents and order of transfer were set as shown in the table below. And two empty pallets Continuous transfers were made to

[0029] In the figures and tables, A, B, and C represent the variety names. ┌──────┬────────┬──────────────────┐ │Palette No. │Transfer contents │Transfer order to empty pallet │ ├──────┼────────┼──────────────────┤ │ 1 │ A: 25 pieces │ A: 20 cases → B: 10 cases │ │ │ B: 10 pieces │ →C: 10 cases →A: 5 cases │ │ │ C: 10 pieces │ │ ├──────┼────────┼──────────────────┤ │ 2 │ A: 10 pieces │ A: 10 cases → C: 5 cases │ │ │ C: 5 pieces │ │ └──────┴────────┴──────────────────┘ To explain from a conventional example, first, the stacker crane 6 loads single types of A, B, and C. Loading station of pallet transfer device 7 for depalletizing pallet 1 from rack 2 (steps S1, S2, S3).

[0030] Next, the transfer device 5 transfers A to the empty pallet 8 on the pallet transfer device 9 for palletizing. The first stage is made by placing 20 varieties (step R1). Also, there are only 5 pieces of A type. Since it is only half-sized, it is placed on a temporary stand (not shown) (step R2). continue , stack 10 pieces of type B and 10 pieces of type C to create the second and third tiers (step R3, R4). Then, place the 5 A types on the temporary stand on top of the 3rd tier and make 4 tiers. Eyes and Palette No. The multi-product loading pallet 3 in 1 is completed.

[0031] After that, the stacker crane 6 moves the pallet transfer device 7 for depalletizing. Return the single-product pallets A, B, and C from the station to rack 2 in sequence (step S4, S5, S6). Next, Palette No. In order to stack A and C, the stacker crane 6 A pallet transfer device 7 for depalletizing a pallet 1 loaded with a single product from a rack 2. It is sequentially carried out to the input station (steps S7, S8).

[0032] The transfer device 5 loads A type onto the empty pallet 8 on the pallet transfer device 9 for palletizing. Make the first row by placing 10 of Stack them to form a second layer (step R6). As a result, Palette No. Creation of multi-product loading pallet 3 in step 2 is completed. .

[0033] After that, the stacker crane 6 moves the pallet transfer device 7 for depalletizing. Return the single-item loading pallets 1 of A and C from the station to the rack 2 in sequence (step S9, S10). In the picking device of the present invention, first, the stacker cranes 18 and 19 are , B, C single product loading pallets 11a, 11b, 11c are placed in racks 13, 14, 1. 5 and 16 to each picking station (steps S1 and S2). , S3).

[0034] Next, the transfer device 26 places two types of A on the empty pallet 17 on the pallet transport device 35. The first stage is created by loading 0 items (step R1), and then each single product loading pallet for B and C is created. Move to the picking station where pieces 11a and 11b are placed, and pick 1 type of B. Stack 0 pieces and 10 pieces of C type in order to create the second and third tiers (steps R2, R 3). After that, it is returned to the picking station of A's single product loading pallet 11a. From there, place 5 A types on top of the 3rd row to make it the 4th row (step R4). Palette No. The multi-product loading pallet 12 in 1 is completed.

[0035] The pallet transport device 35 of the transfer device 26 empties this multi-product loading pallet 12. The arm 28 of the transfer device 26 is transferred to the picking station where the No. 2 of The empty pallet 17 is fed onto the pallet transport device 35. The transfer device 26 continues to load each single product of A and C on the picking station. 10 pieces of type A and 5 pieces of type C are sequentially empty from pallets 11a and 11c. 7 (steps R5, R6), and pallet No. Multi-product loading pallet in 2 Finish creating cut 12.

[0036] After that, the stacker cranes 18 and 19 move A, B, and A of each picking station. Each single product loading pallet 11a, 11b, 11c of C is sequentially placed on racks 13, 14, 1. 5 and 16 (steps S4, S5, S6). As is clear from the above explanation, according to the conventional picking device, the stacker crane The number of operations of the machine was 10 times, and the number of times of transfer of the transfer device was 65 times, but with this invention, According to the picking device, the stacker crane operated 6 times, and the transfer device moved 6 times. The number of operations of the stacker crane has been reduced to 60, reducing the number of operations of the stacker crane by approximately half, and reducing the number of operations of the transfer device. The number of transfers can also be reduced.

[0037]

[Effect of the idea]

Since this invention has the above-mentioned configuration, the number of operations of the stacker crane can be reduced. can be significantly reduced. Therefore, the load on the stacker crane is reduced and the transfer equipment The picking time can be shortened by balancing the load with the Ru.

[0038] In addition, even if there is an irregular number of items to be stacked on a pallet, they can be moved to a temporary storage stand. Since there is no need to do this, picking time can be further shortened and temporary storage tables can be omitted. It is possible to save space by doing this.

[Brief explanation of drawings]

FIG. 1 is a plan view of a picking device according to the present invention.

FIG. 2 is a front view of the picking device shown in FIG. 1;

FIG. 3 is a perspective view of the picking device shown in FIG. 1;

FIG. 4 is a perspective view showing a single-product loading pallet and a multi-product loading pallet.

FIG. 5 is a flowchart showing the operation of a conventional picking device.

FIG. 6 is a flowchart showing the operation of the picking device of the present invention.

FIG. 7 is a plan view of a conventional picking device.

[Explanation of symbols]

11a, 11b, 11c...Single product loading pallet 12...Multiple product loading pallet 13, 14, 15, 16...Rack 17...Empty pallet 18, 19...Stacker crane 26...Transfer device 30a, 30b, 30c, 31a, 31b, 31c,3
1d...Picking station 32...Empty pallet storage station 33...Rail 35...Pallet transport device

──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location B65G 57/03 C 2105-3F

Claims (1)

[Scope of utility model registration request] Claims: 1. A stacker crane for loading and unloading pallets into and out of racks; and a stacker crane for loading and unloading pallets from racks; and a stacker crane for loading and unloading pallets from racks; In the picking device, the single-product loading pallet and the multi-product loading pallet are selected. a plurality of picking stations and at least one empty pallet storage station are arranged along a movement path of the stacker crane, and the transfer device moves along the picking stations and the empty pallet storage station. The transfer device is loaded with an empty pallet taken out from the empty pallet storage station, and the multi-product loaded pallet obtained by placing articles on the empty pallet is transferred to the picking station. A picking device characterized by being provided with a pallet conveyance device for discharging pallets.