JPH07315520A - Method for carrying out mixed cargo pallet of automatic warehouse - Google Patents

Abstract

PURPOSE:To efficiently manufacture a completed pallet and improve the supply efficiency of a core to a casting process by loading the core on the mixed cargo pallet, in response to the demand for carrying out a pallet loaded with the core from a core forming machine, and carrying out a mixed cargo pallet capable of being carried out to the casting process. CONSTITUTION:The forming schedule of core forming machines, 4a, 4b, 4c... is displayed on the respective carrying out demand panels 6a, 6b, 6c... by inputting the information into a core manufacturing instruction storage device 8 through a keyboard 8b before the operation is started. An operator makes a carrying out demand from each carrying out demand panel that the pallet from a core arranging shelf is carried out to carrying in and out ports 5a, 5b, 5c... in order to load the cores from the respective core forming machines 4a, 4b, 4c... on the pallet. A center control device 9 checks the inventory data to the carrying out demand. The mixed cargo pallet to meet the condition is retrieved according to the consolidated condition and according to the priority order by moving back the priority order until the pallet is found is found in the shelf row and carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supplying and controlling a mixed product loading pallet in an automatic warehouse, and more particularly to a method of delivering and supplying cores.

[0002]

2. Description of the Related Art Generally, in a foundry, in order to balance the equipment capacity between the casting process and the core process, the core is molded one day ahead of the scheduled casting date, and the core is molded. In many cases, the method of temporary storage in automated warehouses is used. As a means for storing the formed core, an automatic warehouse (hereinafter referred to as a core serving shelf) system in which several shelves are installed in multiple stages and a stacker crane is used for loading and unloading is used. The number of cores used in the casting process is 2 for each casting product name.
Often, cores of more than one variety are used. When such cores are put in a pallet and stored in a core serving shelf, one type of core is placed on one pallet (hereinafter referred to as a single pallet), and casting products are required on one pallet. There are cases where multiple types of cores are to be placed (hereinafter referred to as a mixed pallet). In JP-A-1-162607, when a single-load pallet and a mixed-load pallet exist in the warehouse, the computer reserves the shelves in which the shipping-targeted product type exists, and determines whether it is the mixed-load pallet. A method is disclosed in which mixed loading shelves are consecutively registered, and single loading shelves are continuously registered as single loading shelves, thereby improving the efficiency of shipping operations.

[0003]

However, when the ratio of the mixed loading pallets increases, it is possible to efficiently set the cores as set in the pallets simply by grouping the single loading pallet and the mixed loading pallet as described above and continuously delivering the pallets. It is not enough to load well, and the scheduling of shipping priority within the mixed pallet
I have to wear a ring. The present invention, in response to a pallet delivery request for loading cores from a core molding machine, efficiently loads many pallets capable of loading a predetermined type and number of cores on a mixed pallet and delivering them to the casting process. The purpose is to provide a method of delivering mixed pallets that can be created.

[0004]

The present invention uses the following means in order to solve the above problems. When there is at least one other item in addition to the items to be supplied on the pallet. Delivery priority No. 1: Searches for a pallet in which there are some items to be supplied but the number is less than the preset load number and all other items have reached the preset load number. Outgoing priority No. 2: There is no item to be supplied, and
All other items are searched for in a pallet that has reached the preset number of loads. Outgoing priority No. 3: Searches for a pallet in which there are some items to be supplied, but the number is less than the preset load number, and there is at least one other item. Outgoing priority No. 4: There is no item to be supplied, and
Search for pallets that have at least one other item. Departure priority No. 5: Search for empty pallets. As described above, the means for sequentially delivering the mixed product pallet closest to completion to the core process is used.

[0005]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a system configuration for implementing the present invention. In the drawing, reference numerals 1 and 2 are plan views of a rack row of the core serving rack, and a stacker crane 3 travels between the rack rows 1 and 2 of multiple stages. A plurality of core molding machines 4a, 4b, 4c, ... Are installed at intervals in the vicinity of the bottom of the shelf rows 1 and 2. Further, the core forming machines 4a, 4b, 4c are provided at the bottom of the shelf rows 1 and 2.
In the vicinity of ..., the loading / unloading ports 5a, 5b, 5 of the core serving rack
c ... is provided. Entry / exit ports 5a, 5b, 5c ...
Corresponds to each of the core molding machines 4a, 4b, 4c ...
This is a loading / unloading station for temporarily storing the cores molded by the core molding machine in the storage dedicated shelves of the shelf rows 1 and 2. In the vicinity of the loading / unloading ports 5a, 5b, 5c ..., loading / unloading request boards 6a, 6b, 6c which are terminals for setting the product name code of the core, the number of loadings, etc. when the loading or unloading request is made.
Are installed corresponding to each of the core molding machines.

At the ends of the shelves 1 and 2, loading / unloading stations 7a and 7b for loading / unloading the core in the casting process are provided. Reference numeral 7a is a station for delivering the pallet loaded with the cores to the casting process, and 7b serves as a receiving station for returning the pallet delivered to the casting process to the shelves 1 and 2. Storage of empty pallets occurs from this storage station 7b. A core manufacturing instruction storage device 8 is connected with a display device 8a and a keyboard 8b. In addition, loading / unloading request boards 6a, 6b, 6c ...
Connected with. Reference numeral 9 is a central management unit, and a loading / unloading request panel 6
a, 6b, 6c ... And the stacker crane ground control device 10 are connected via a communication cable. The central management device 9 is a computer that creates an operation schedule of the stacker crane when inventory management in the core serving shelves and a request for warehousing and warehousing occur, and a display device 9a and a keyboard 9 are provided.
b is connected.

Next, the operation of the present invention will be described. The daily molding schedule for each core molding machine is displayed on the display devices of the respective storage request boards 6a, 6b, 6c, ... To be done. At the time of core molding work, the worker loads the cores to be molded by the core molding machines 4a, 4b, 4c ... Departure request is issued from each entry / exit request board so that the item is delivered to 5c ...

Here, a method of delivering the cores from the core serving rack when two kinds of cores are mixedly loaded on the pallet will be described. As a standard, the mixed pallet has three cores A01 and four cores A02. Now, it is assumed that an arbitrary number of pattern pallets as shown in FIG. 2 are present in the core serving rack. Palette 11 is core A01 and core A0
Reference numeral 2 is a mixed loading completed pallet that satisfies a predetermined number. The pallet 12 is a mixed pallet in which the core A01 does not satisfy the predetermined number of cores and the core A02 satisfies the predetermined number of cores. The pallet 13 has no core A01 but the core A02 has a predetermined number. A mixed pallet that satisfies the number of pieces to be filled, a pallet 14 is a mixed pallet in which the core A01 does not satisfy the predetermined number of pieces, and the core A02 does not meet the predetermined number of pieces. Without core A02 is a mixed pallet that does not meet the specified number of pallets, pallet 16 is core A01,
It is an empty pallet with neither A02 loaded.

At present, the core molding machine 4a molds the core A01 and the core molding machine 4b molds the core A02. In order to load the core A01 on the pallet by the core molding machine 4a. It is assumed that a pallet delivery request is issued to the entry / exit port 5a. The central management unit 9 responds to the above-mentioned delivery request by the shelf line 1,
Check inventory data in 2. The check method is a method in which, according to the priority order corresponding to the mixed loading state of the mixed loading pallets, the secondary priority order is moved down and retrieved until the mixed loading pallets that meet the conditions are found in the rack rows 1 and 2.

The first priority is a mixed pallet in which the specified core exists but does not satisfy the predetermined number, and all the other cores satisfy the predetermined number. That is, it corresponds to the pallet 12. In this example, the designated core is A0
1 and all other cores indicate only A02. The second priority is a mixed pallet in which the specified core does not exist and all other cores satisfy the specified number. That is, it corresponds to the pallet 13. The third priority is a mixed pallet in which the specified core exists but does not satisfy the predetermined number, and any of the other cores does not satisfy the predetermined number.
That is, it corresponds to the pallet 14. The fourth priority is
A mixed pallet where the specified core does not exist and one of the other cores does not meet the specified number. That is, pallet 15
Equivalent to. The fifth priority is the empty pallet, that is,
It corresponds to the pallet 16. In this case, the priority is set to be higher for the goods closer to the exit. Further, if the mixed pallet that meets the above conditions is not found in the shelf row 1 with the fifth priority, the fact is displayed on the entry / exit request board 6a. In this case, the worker is in the receiving station 7b.
Supplies empty pallets to the shelves 1 and 2. When there is a pallet with the same conditions in the search as described above, the pallet with the oldest date of warehousing when the core is first loaded is preferentially discharged.

When the number of cores in the pallet reaches a preset number, or when warehousing is required even if the number does not reach the set number, the worker requests the loading / unloading boards 6a, 6b,
Input a storage request command and the number of supplies from 6c ....
In response to this storage request signal, the central management unit 9 issues a stacking instruction to the stacker crane, and the pallet is stored in the empty rack of the distribution rack. At this time, in the central management device 9, the number of cores A01 set in advance and the core A01 set by the operator when the storage request is made on the storage / receipt request panels 6a, 6b, 6c.
Are compared to determine whether or not a predetermined number has been reached. Then, as shown in FIG. 3, the core A01 is completed when a predetermined number is reached, and "1" is stored in the core completion section. If it has not reached, the core A01 is incomplete and "0" is stored in the core completion section. As a result, it is possible to store the pallet in which the state of the number of cores A01 in the mixed pallet is stored.

Although the core forming machine 4a has been described above, the core forming machine 4b similarly outputs from the pallet close to the completed pallet according to the state of the mixed pallet in response to the delivery request to the loading / unloading port 5b. To be done. Therefore, the mixed loading completed pallet in which the necessary cores are loaded can be efficiently stored in the catering rack. The central management device 9 has a core A0.
The pallet for which 1 has been completed and core A02 has also been completed is stored as a pallet completion category “1”. The above-mentioned loading and unloading can be applied without any problem to pallets that are not mixedly loaded.

Further, in response to the core supply request from the casting process, the central management unit 9 searches the pallet completion section as shown in FIG. If there are multiple completed pallets, create a stacker crane operation schedule that will allow the cores to be loaded in the oldest order when the core is first loaded, and supply the mixed finished pallets.

[0014]

EFFECTS OF THE INVENTION According to the present invention, not only mixed pallets and single pallets but also pallets close to the finished pallet are preferentially discharged and the cores are loaded, so that the finished pallet is efficiently produced and the casting process is performed. The efficiency of core supply to the core is improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration for implementing the present invention.

FIG. 2 is a diagram showing an example in which two types of cores are mixedly loaded on a pallet.

FIG. 3 is a diagram showing a format of inventory data stored in a central management unit.

[Explanation of symbols]

1, 2 core serving shelving 3 stacker cranes 4a, 4b ... core molding machine 5a, 5b ... core dispensing rack loading / unloading port to / from core molding machine 7a, 7b ... core serving shelf Storage / receipt station for casting process 8 Core manufacturing instruction storage device 9 Central management device 10 Stacker-crane ground control device 11, 12, 13, 14, 15, 16 Pallet

Claims (3)

[Claims] 1. A method of unloading a pallet containing one or a plurality of articles mixedly stored in an automatic warehouse in response to a pallet supply request from a device for supplying a predetermined article. Mixed loading in an automated warehouse that compares the number of each loaded mixed loading with the actual number of loaded mixed loadings stored in the pallet and stored in the pallet, and issues pallets in a priority order corresponding to the loading status Item pallet delivery method, in which there are several items to be supplied but the number of loaded items is less than the preset loading number, and all other items have reached the preset loading number If you do not find any pallets that meet the above conditions,
Priority 2 for pallets for which there are no items to be supplied and all other items have reached the preset number of loads
If there are no pallets that satisfy the above conditions, there are some items to be supplied but the number is less than the preset loading number, and A pallet having at least one item is searched as the third priority, and pallets satisfying this condition are sequentially output. If there is no pallet satisfying the above condition, the item to be supplied does not exist, and Search for pallets that have at least one item other than the above as priority 4, and sequentially issue pallets that satisfy this condition. If there are no pallets that meet the above conditions, retrieve empty pallets and issue them sequentially. A method for issuing mixed-product pallets in an automated warehouse. 2. The automatic warehouse according to claim 1, wherein when the pallets stored in the automatic warehouse are of the same loading state, the oldest warehousing date at the time of the first receipt is given priority. How to issue a mixed-loading product pallet. 3. The mixed product pallet issuing method for an automated warehouse according to claim 1, wherein the mixed product is a core.