JPS63208409A - Warehousing control system for automatic warehouse - Google Patents

Abstract

PURPOSE:To construct a system having high warehouse efficiency by splitting the shelf in a warehouse into plural blocks, and employing the block near to an outlet station for containing such products as having high inlet plan ratio. CONSTITUTION:In a warehouse, a shelf 5 is assembled cubically in order to contain products. The products are carried by a carrying truck 1 to an inlet station 2 where they are transferred onto a crane truck 4 and contained in a specified shelf. The cubic warehouse is splitted sequentially from the side of an outlet station 3 into five blocks. Inlet blocks splitted in such a manner are employed for containing products where the block having smaller block number contains product having higher inlet plan ratio, thereby moving distance of the crane truck 4 can be shortened.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to warehousing control in automated warehouse equipment, and is particularly suitable for warehousing control in warehouses where inoculation of incoming products is random and warehousing and unloading processes occur frequently. Regarding the method.

[Conventional technology]

In the conventional warehousing control method, when warehousing processing occurs, the warehousing shelves are sequentially searched starting from the shelf closest to the warehousing station, a shelf that can be stocked is detected, and the stock is stocked on the corresponding shelf.

In addition, when a warehouse consists of multiple lanes, the warehousing lanes are distributed to improve the efficiency of warehousing and unloading. As described in Japanese Patent Publication No. 55-39481, the conventional warehousing control system is based on a storage block consisting of multiple storage shelves on both sides of an aisle. There is a storage method using storage logic based on a link association method that enhances the coordination between each isle by storing in a storage block. This method balances the workload of retrieval services between storage blocks and allocates storage so that requests for retrieval of multiple items can be retracted from any block.

[Problem that the invention seeks to solve]

The above-mentioned conventional technology is a storage method that focuses on preventing out-of-stock items when multiple items are requested to be delivered simultaneously, balancing storage blocks for delivery operations, balancing inventory amounts, and balancing crane operation. For this purpose, a new link connection method is adopted, but as a result, the incoming products are distributed within the warehouse, and although it is possible to equalize the crane movement, it is not possible to minimize the crane movement. However, as a result, it is not an efficient warehouse entry/exit control method. In addition, when warehousing, it is necessary to constantly check the inventory of blocks in order to link them, which may be difficult to achieve depending on the small warehouse system or the capacity of the control device. The storage density is very high.
In addition, when applied to a warehouse with a high turnover rate, there is a problem that the loading/unloading capacity is reduced.

The purpose of the present invention is to solve the above-mentioned problems, improve the warehousing/output efficiency by determining the warehousing block by considering the warehousing plan ratio at the time of warehousing while keeping the inventory amount balanced, The objective is to provide a warehousing control method that can also be applied to systems.

[Means for solving problems]

In order to achieve the above objective, first, the shelves in the warehouse are divided into a plurality of blocks using the retrieval station as a reference point. In other words, blocks near the delivery station are used for storing products with a high warehousing plan ratio, and blocks on the warehousing side are sequentially allocated for use according to the warehousing plan ratio. Next, the warehousing plan ratio, which is a parameter that determines the warehousing block, is expressed as the ratio of the cumulative value of the warehousing plan for each product code individually assigned to the product in and out of stock, with respect to all the warehousing plans within a certain period. This warehousing plan ratio is divided into sections optimal for the equipment, and stored in advance in correspondence with the warehousing blocks divided by the setting device. When warehousing processing occurs, the warehousing block is searched based on the warehousing product code. Next, the blank space is searched sequentially from the front in the warehousing block to obtain the warehousing shelf. This objective is achieved by adopting a control method of warehousing products in warehousing blocks in accordance with the warehousing plan ratio.

[Effect]

By dividing warehouse equipment into a plurality of warehousing blocks, it is possible to receive warehousing according to the warehousing plan ratio, and the range of the warehousing shelf index (blank search) is narrowed to improve index processing efficiency. Furthermore, when a block overflows, it is possible to prevent the overflow by using the next block as an overflow area. The division of blocks is calculated based on the warehousing plan ratio for each product code obtained from the warehousing plan for a certain period. In other words, each warehousing block has a range of possible warehousing planning ratios for the warehousing planning ratio calculated for each product code, but the warehousing planning ratio for each product code that matches this range is accumulated for each warehousing block. Let be the ratio of each incoming block size.

The warehousing plan ratio is the warehousing ratio for each product code attached to each warehousing product with respect to the warehousing plan for a certain period, so it can be expressed by the following equation.

I Rk= -X 100 (%)...1 formula where Rk
: Number of shelves in stock with warehousing plan ratio of 0. With this method of determining the warehousing block based on the warehousing planning ratio, there are fewer fluctuations in product codes. In a warehouse where there are many warehouses, by setting a short cumulative period, the warehousing planning ratio can be used accurately to determine the warehousing block.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an example of warehouse equipment to which the present invention is applied. In the warehouse, shelves 5 are assembled three-dimensionally to store incoming products as shown in this figure. Incoming products are first transported by a transport truck 1, arrive at a warehousing station 2, are transferred to a crane truck 4, and are stored on a designated shelf. In addition, at the time of unloading, the crane truck 4 takes out the unloaded product from the designated shelf, transfers it to the unloading station 3, and further transports the product to the unloading light by the transport truck 6. Figure 1(a) is a floor plan of the warehouse;
(b) shows a side view.

Next, the division of warehousing blocks in this multi-dimensional warehouse will be explained. FIG. 2 shows an example of block division, in which blocks 1, 2, and 3 are sequentially divided into five blocks from the delivery station side. The warehouse blocks divided in this way can be used to store products that have a higher planned warehouse ratio for blocks with smaller block numbers, thereby reducing the amount of movement of the crane cart, thereby improving warehouse loading and unloading efficiency. It becomes possible to do so. The division criteria for blocks is determined by the incoming products and warehouse size, but in the case of 4 divisions, it is 1:
The size of the delivery block should be large, such as 2:3:4. The number of block divisions and block size are
Optimal division is achieved by using a method determined by a block setter and allowing settings to be changed arbitrarily. Next, FIG. 3 shows an example of the planned number of warehousing within a certain period for each product code attached to the warehousing product and the proportion thereof to the total number of warehousing plans, that is, the warehousing plan ratio. The warehousing plan range for each block as shown in FIG. 4 is determined from the warehousing plan ratio and block size thus obtained. For example, if the size of block 1 is 30% of the total shelf, then the warehousing plan ratio data in Figure 3 is accumulated in order from the highest to the highest, and when it exceeds 30%, the last added warehousing plan ratio data is calculated. The lower limit of the range should be the rolled one.

FIG. 5 shows the actual travel circuit side of the warehousing control device to which the present invention is applied.

A plan for products to be stocked in the automated warehouse facility 7 is set by a stocking plan setting device 10, and the stocking product plan register 11 is cumulatively totaled for each product code of each stocked product, and the cumulative value and the planned value are stored. The set or accumulated warehousing plan value is stored in the warehousing plan ratio register 13 in the warehousing plan ratio calculation circuit which calculates the warehousing plan ratio for each product code from the contents of the warehousing product plan register 11 .

Further, the division of the received blocks is set in advance by the block setting device 14. The block setting device is used to change the settings of the contents of the block management register 15.
In addition, the block size and warehousing planning ratio range can also be changed.

Furthermore, when the incoming products arrive at the warehousing side of the automated warehouse 7 and a warehousing processing request is generated, the warehousing information 17 is transferred to the process input/output device 8.
The data is input to the warehousing register 9 through the warehousing register 9, and the warehousing control circuit 16 is activated.

The warehousing control circuit 16 takes in the block management information (for example, block size, warehousing plan ratio range, etc.) stored in the warehousing register 9 and the warehousing plan ratio stored in the warehousing plan ratio register 13, and determines the warehousing block. , and determines whether or not it is possible to receive goods within the block, and determines the position of the receiving shelf.
The warehousing control signal 19 is passed through the process input/output device 8,
Output to automatic warehouse equipment 6.

FIG. 6 shows a flowchart block diagram of an embodiment of the arithmetic processing contents in the warehousing control circuit 16.

According to the present embodiment, the process is started when the incoming product is stored in the warehousing register 9, and the calculation is ended after determining the warehousing block and the shelf position within the warehousing block according to the warehousing plan ratio of the incoming product. If 100,000 people cannot be stocked, the calculation is terminated.

By calculating the warehousing plan ratio, dividing the warehousing block, and controlling the warehousing as described above, it is possible to arrange products with a large warehousing plan ratio on the shelf at the warehousing station side. In addition, products with a low warehousing plan ratio or products with no warehousing plan can now be placed on the shelf at the warehousing station.

〔Effect of the invention〕

According to the present invention, items with a high warehousing plan ratio are stored on a shelf near the warehousing station, and items with a low warehousing plan ratio are stored on a shelf near the warehousing station. Since the products can be stored in the designated shelves regardless of the order of storage, the amount of work required for the crane truck is reduced, power costs and maintenance costs can be reduced, and the time required for storage and removal can be shortened. Therefore, a system with high loading/unloading efficiency can be constructed in an automated warehouse with different loading/unloading ports.

[Brief explanation of the drawing]

Figure 1 is an example of automatic warehouse equipment to which the present invention is applied (
a) is a plan view, (b) is a side view, Fig. 2 is an explanatory diagram of an example of block division, Fig. 3 is an explanatory diagram of an example of calculating the warehousing planning ratio, and Fig. 4 is a block and warehousing planning ratio. FIG. 5 is a circuit configuration diagram based on the personal pressure control method, and FIG. 6 is a processing flowchart of the warehousing control circuit. 1.6...transportation truck, 2...warehousing station, 3
... Unloading station, 4... Crane trolley, 5.
... Shelf, 7... Automatic warehouse equipment, 8... Process input/output device, 12... Warehouse planning ratio calculation circuit, 13... Warehouse planning ratio register, 14... Block setting device, 15.
...Block management register, 16... Warehousing control circuit.

Claims (1)

[Claims] 1.Automated warehouses that have different entrances and exits, and multiple numbers; cranes and trolleys that operate inside the warehouse based on commands from outside; and warehouse equipment such as conveyors; and warehousing stations that transfer products in and out. In an automated warehouse consisting of a warehouse and a retrieval station, the warehouse is divided into multiple large and small blocks from the shelf retrieval station, and the warehousing plan ratio is calculated for each product code set for each incoming product based on the warehousing product plan. Allocates a receiving block, determines the receiving block based on the receiving product code when receiving the incoming product, determines the receiving shelf within the block, and controls the crane and receiving cart to stock the corresponding shelf. A warehousing control method in an automated warehouse characterized by: