JP2013054552A - Production plan creation system and production plan creation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change a production plan in response to the delivery instruction of a client during the manufacturing of a steel product.SOLUTION: A production plan creation part 145 creates the production plan of a steel product on the basis of a contract delivery time, and an input part 11 receives the input of the order information of each steel product including at least information relating to the scheduled use date and requested weight of the steel product, and a schedule merchandise data creation part 143 calculates the scheduled weight of each steel product to be produced within a predetermined period on the basis of the created production plan in response to the input of the order information, and a schedule merchandise allocation part 144 associates the steel product to be produced within the predetermined period with the order information on the basis of the calculated scheduled weight so that the steel product having the requested weight can be delivered by the scheduled use date, and a production plan creation part 145 changes the production plan on the basis of the association result of the order information.

Description

  The present invention relates to a production plan creation system and a production plan creation method for creating a production plan for steel products.

  Conventionally, in transactions from ordering to delivery of steel products, customers (for example, automobile manufacturers and electrical equipment manufacturers) place orders for ordered products (for example, sales and trading companies of steel manufacturers) and finished products (products). ), And the orderer who accepts the order gives the orderer (for example, a steel maker) the order of the corresponding product and the delivery instruction.

  In such a transaction, if the contractor tries to manufacture a product according to the ordering information, there may be a temporary excess or deficiency of the product due to the limitation of the manufacturing capability. Therefore, in such a transaction, the contractor creates a production plan by determining the priority of product manufacturing based on a plurality of pieces of order information.

  By the way, the delivery deadline (delivery date) and weight (required weight) included in the ordering information are based on the contract date exchanged before the customer intends to use the product (scheduled use date) and the weight. Delivery time and total weight only. Therefore, in actuality, the orderer may gradually materialize the scheduled use date and the required weight while contacting the customer, and one order information may be divided into several times and a delivery instruction may be given. Many.

  Therefore, even if a production plan is created by determining product manufacturing priorities based on multiple pieces of ordering information, if a delivery date / weight delivery instruction different from the delivery date / weight described in each ordering information is given The priority of product manufacturing is changed and the production plan is forced to change.

  In Patent Document 1, the product is manufactured based on the actual usage for each product specification and the inventory is optimized, so that the delivery date and the delivery weight are appropriately determined for the delivery date of the repeat product that is irregular. It is described.

JP 2001-356809 A

  However, generally, steel products are manufactured through a plurality of processes such as a steelmaking process, a hot rolling process, a cold rolling process, and a plating process. For steel products such as slabs and coils, based on delivery instructions with a delivery date and weight different from the delivery date and weight described in the ordering information during the production of the actual product (work in process) such as slabs and coils. In order to change the production plan, a lot of labor is required, and there is a case where it is not sure to respond to the delivery instruction. Similarly, when a so-called disqualification occurs in which a nonstandard product is manufactured during manufacturing, it is also necessary to change the production plan with great effort.

  The present invention has been made in view of the above, and provides a production plan creation system and a production plan creation method capable of easily changing a production plan in accordance with a customer's delivery instruction made during the manufacture of steel products The purpose is to do.

  In order to solve the above-described problems and achieve the object, a production plan creation system according to the present invention is a production plan creation system for creating a production plan for a steel product manufactured through a plurality of processes, and a contract delivery date A production plan creation means for creating a production plan for the steel product based on the information, a reception means for accepting input of order information for each steel product including at least information on a scheduled use date and a required weight of the steel product, and the order information In accordance with the input, based on the production plan created by the production plan creation means, a calculation means for calculating a planned weight for each steel product produced within a predetermined period, and the required weight by the scheduled use date The steel product produced within the predetermined period based on the planned weight calculated by the calculating means so that the steel product can be delivered. And correlating means for attaching straps to the distribution, on the basis of the association results of the order information by the association means, and a changing means for changing the created production plan by the production plan creation means.

  Further, in the production plan creation system according to the present invention, in the above invention, when the accepting unit can accept an input for changing the planned weight, and the accepting unit accepts an input for changing the planned weight. The linking means links steel products produced within the predetermined period to the order information based on the planned weight received by the receiving means and the planned weight calculated by the calculating means, and the change The means changes the production plan created by the production plan creation means on the basis of the result of order information linking by the linking means.

  The production plan creation method according to the present invention is a production plan creation method for creating a production plan for a steel product manufactured through a plurality of steps, and creates the production plan for the steel product based on a contract delivery date. Created in the production plan creation step, a reception step for accepting input of order information for each steel product including at least information on the scheduled use date and required weight of the steel product, and the production plan creation step according to the input of the order information A calculation step for calculating a planned weight for each steel product produced within a predetermined period based on the production plan, and the calculation means so that the required weight of the steel product can be delivered by the scheduled use date. A step of associating a steel product produced within the predetermined period with the order information based on the planned weight calculated by Based on the association results of the order information by the linking step includes a changing step of changing the created production plan in the production plan creation step.

  According to the present invention, the production plan is automatically changed back to the actual product being manufactured according to the scheduled use date of the customer, so according to the customer's delivery instruction made during the manufacture of the steel product The production plan can be easily changed.

FIG. 1 is a diagram for explaining an example of a flow from manufacture to delivery of a steel product to which the present invention is applied. FIG. 2 is a schematic diagram showing a schematic configuration of a production plan creation system according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a data configuration example of the order information DB according to the present embodiment. FIG. 4 is a diagram illustrating a data configuration example of the configuration actual product DB according to the present embodiment. FIG. 5 is a diagram illustrating a data configuration example of the actual product DB for allocation according to the present embodiment. FIG. 6 is a diagram illustrating a data configuration example of the schedule product DB according to the present embodiment. FIG. 7 is a flowchart showing the flow of the production plan creation processing procedure of the present embodiment. FIG. 8 is a diagram for explaining the production plan creation process of the present embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

  First, with reference to FIG. 1, the flow from manufacture to delivery of a steel product that is a production plan creation target of the present embodiment will be described. As shown in FIG. 1, when a slab is produced in a steel making process, the steel product is manufactured as a product through a plurality of processes such as a hot rolling process HOT, a cold rolling process TCM, and a plating process CGL. The In-process products (slabs, hot coils, cold rolled coils, etc.) manufactured in each process are called actual products. The manufactured steel products are sorted according to the weight required by the customer. Then, the steel products that have been assembled are shipped after a predetermined shipping period according to the orderer's shipping instructions received during a predetermined procedure period. The shipped steel product reaches a customer through a predetermined transportation period and is picked up. The collected steel product is used after being stored as a stock for a predetermined period by a customer. In other words, when the customer's scheduled date of use is determined, the scheduled delivery date is determined by securing a predetermined inventory period, the scheduled shipping date is determined by subtracting the specified shipping period from the scheduled delivery date, and the predetermined shipping date is determined. The date when the product assortment should be completed (the assortment request date) is determined by subtracting the shipping period and the procedure period waiting for the shipping instruction. In the present invention, a steel product is manufactured from the manufactured product so that the date when the assortment of steel products becomes possible (the scheduled assortment date) is in time for the assortment request date determined from the scheduled use date of the customer in this way. The production plan until manufacturing is made or changed.

  Next, a schematic configuration of the production plan creation system 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 2, the production plan creation system 1 includes an input unit 11, an output unit 12, various databases (hereinafter referred to as DBs) 131 to 135, and a control unit 14 that controls each component unit. The various DBs 131 to 135 may be configured to communicate with the control unit 14 via an electric communication line such as a LAN or the Internet.

  The input unit 11 is realized by using an input device such as a power switch and an input key, and inputs various instruction information such as production plan creation to the control unit 14 in response to an input operation by an operator.

  The output unit 12 is realized by a display device such as a liquid crystal display, a printing device such as a printer, an information communication device, or the like. The output unit 12 outputs the production plan created by the production plan creation system 1.

  The order information DB 131 stores order information such as customer order information and use schedules. As illustrated in FIG. 3, the delivery date and the requested weight are stored using the identification information (order ID) of the order information as key information. One set of delivery date (contract delivery date) and required weight is stored in one order ID according to the original ordering information. After that, when the orderer inputs a delivery instruction including one or more sets of scheduled use dates and requested weights, the contract delivery date and requested weight are overwritten, and multiple sets of delivery dates (scheduled dates of use) and requests for one order ID. The weight is stored. Of course, a plurality of sets of scheduled use dates and required weights may be additionally stored in the contract delivery date and the required weight. The order information can be input / changed via the input unit 11.

  The constraint condition DB 132 stores constraint conditions referred to in a production plan creation process described later. The constraints include, for example, information on a predetermined period determined for each customer such as the above-mentioned procedure period, shipping period, transportation period, and inventory period, and the standard of finishing after each process in the manufacturing process and after the final process. Standard information on manufacturing, such as the required time, lead time required between each process, and standard changes in product specifications that change with each process (planned change), and holidays that are not included in the above-mentioned various periods Information is stored.

  The component actual item DB 133 stores information (component actual item data) on the manufactured actual item. As shown in FIG. 4, the component actual product data includes at least the current process (in-process line), the actual product thickness (actual product thickness), and the width (actual product width) using the actual product identification information (actual product ID) as key information. ), Specification information such as weight (actual product weight). In addition, the component actual product DB 133 includes data of manufactured (assorted) steel products. Thereby, as will be described later, it is possible to include the data of the steel products that have been aligned in the actual product DB 134 for allocation and the schedule product DB 135.

  The allocation actual item DB 134 stores information (allocation actual item data) on the actual item (schedule actual item) scheduled to be manufactured within a predetermined period from the manufactured actual item stored in the configuration actual item DB 133 described above. In the actual product data for allocation, as shown in FIG. 5, using the actual product ID as key information, at least the process scheduled to pass before becoming a steel product (passing planned line), the current process (work in process line), and passing Specification information such as thickness (entrance side thickness), width (entrance side width), weight (entrance side weight) of the actual product before processing in the scheduled process, scheduled end time of each process scheduled to pass through (planned passing time of own line) ) The scheduled end time of the previous process (planned passage time of the previous line), the scheduled end time of the next process (planned time of passing the subsequent line), and the like are included. The actual item ID is a value common to the component actual item DB 133, and the same actual item ID is assigned to the record for each scheduled passage process for the schedule actual item based on the same actual item.

  The schedule product DB 135 is a steel product (schedule product) scheduled to be finished after passing through the final process based on the manufactured actual product stored in the component actual product DB 133 and the schedule actual product stored in the allocation actual product DB 134 described above. Stores information (schedule product data). In the schedule product data, as illustrated in FIG. 6, at least the corresponding actual product ID, the weight of the product (scheduled weight), the scheduled assortment date, using the identification information (schedule product ID) of the schedule product as key information, Information such as assortment request date, scheduled procedure date, scheduled shipment date, scheduled delivery date, scheduled use date, scheduled shipping date, contract delivery date, and the like is included.

  The control unit 14 is realized using a memory that stores a processing program and the like and a CPU that executes the processing program, and controls each component of the production plan creation system 1 described above. Further, the control unit 14 includes a request information creation unit 141, an actual product data creation unit 142 for allocation, a schedule product data creation unit 143, a schedule product allocation unit 144, and a production plan creation unit 145, which will be described later. Execute production plan creation processing.

  Here, the production plan creation processing procedure by the production plan creation system 1 will be described with reference to the flowchart of FIG. The flowchart in FIG. 7 starts, for example, when the operator operates the input unit 11 to input a production plan creation instruction, and the production plan creation processing proceeds to step S1.

  In the process of step S1, the control unit 14 monitors the input unit 11 or the update of the order information DB 131, for example, to monitor whether the orderer inputs the customer order information. When the control unit 14 detects the input of order information when ordering information and delivery instructions are registered in the order DB 131, the production plan creation process proceeds to the process of step S2.

  In the process of step S2, the request information creating unit 141 creates request information based on the order information input in step S1. The request information includes information on dates such as delivery request date, scheduled use date and requested weight contained in the order information, assortment request date, scheduled shipping date, scheduled take-up date, scheduled use date, scheduled shipping date, and the like. Information on these dates is calculated by referring to the constraint condition DB 132 based on the delivery date or scheduled use date included in the order information. The request information created including the information regarding the calculated date and the required weight is stored in an appropriate storage unit such as a memory. Thereby, the process of step S2 is completed, and the production plan creation process proceeds to the process of step S3.

  In the process of step S3, the actual product data for allocation data creation unit 142 creates actual product data for allocation to be stored in the actual product for allocation 134 based on the actual product data for configuration stored in the actual product DB 133 for configuration. Here, the processing after step S3 will be described with reference to FIG. In FIG. 8, the manufactured slab coil is drawn by a solid line, and the slab coil to be manufactured (schedule actual product) is drawn by a dotted line. That is, the process of step S3 is to generate the schedule actual product data drawn by the dotted line based on the actual product data drawn by the solid line in FIG. 8, and store these in the allocation actual product DB 134. .

  Specifically, the actual product data creation unit 142 for allocation uses the same actual product ID for one record associated with the actual product ID stored in the component actual product DB 133 by the number of processes scheduled to pass through to the steel product. The actual product data for allocation associated with is created. For example, in the example of FIG. 4, since the actual product with the actual product ID = c is currently being processed in the hot rolling process HOT, as the actual product data for allocation stored in the actual product for allocation 134 in FIG. 5, the same actual product ID = For c, three records corresponding to the three processes of the hot rolling process HOT, the cold rolling process TCM, and the plating process CGL are created. Then, the actual product data creation unit 142 for allocation calculates scheduled specification information (input side thickness, input side width, input side weight) for the records corresponding to the respective processes, and stores them in association with each other. The calculation of the scheduled specification information is performed with reference to the scheduled change amount stored in the constraint condition DB 132, for example. Further, the actual product data creation unit 142 for allocation plans to pass through the process and the preceding and succeeding processes for the record corresponding to each process (local line passage scheduled time, previous line passage scheduled time, rear line passage scheduled time). Are calculated and stored in association with each other. For example, the estimated passage time is calculated with reference to the standard time required for each process stored in the constraint DB 132. The allocation actual product data creation unit 142 stores the allocation actual product data created as described above in the allocation actual product DB 134. Thereby, the process of step S3 is completed, and the production plan creation process proceeds to step S4.

  As described above, the allocation actual product DB 134 also includes data on steel products that have been assembled. This is realized by storing the data of assorted steel products included in the component actual product DB 133 as they are.

  In the process of step S4, the schedule product data creation unit 143 stores the schedule product DB 135 in the schedule product DB 135 based on the actual product data for allocation stored in the actual product data for allocation 134 and the actual product for allocation stored in the actual product DB 133 for configuration. Create product data. That is, as illustrated in FIG. 8, the schedule product data creation unit 143 has the planned weight when the actual product corresponding to the component actual product data and the actual product data for allocation is finished as a steel product after passing through the final manufacturing process. It divides | segments suitably so that a range may be set to about 5-10t, and let each be a schedule goods. Then, the schedule product data creation unit 143 assigns a schedule product ID as one record for each divided schedule product.

  For example, the actual product ID = c schedule actual product shown in FIG. 5 is divided into two schedule products having a final weight of 10.270 t after finishing the plating process CGL which is the final process. At this time, two schedule product IDs = c-01 and c-02 are associated with one actual product ID = c. In this way, schedule product data including the scheduled weight corresponding to the schedule product ID, the corresponding actual product ID, and the scheduled assortment date is created and stored in the schedule product DB 135. Thereby, the process of step S4 is completed, and the production plan creation process proceeds to step S5. Note that the scheduled assortment date is calculated based on the scheduled passage time of the final process and the standard required time for finishing stored in the constraint DB 132, for example. The other items of the schedule product data illustrated in FIG. 6 are set by the process of step S5 described later. Further, as described above, the schedule product DB 135 also includes data on assorted steel products by storing the assorted steel products data included in the component actual product DB 133 and the allocation actual product DB 134 as they are. .

  In the process of step S5, the schedule product allocation unit 144 associates the request information created in step S2 with the schedule product data created in step S4. That is, in the process of step S5, as shown in FIG. 8, the scheduled weight of the scheduled product is divided or integrated by an appropriate weight and applied to the request information.

  Specifically, the schedule product assignment unit 144 appropriately divides or integrates the planned weights included in the schedule product data so as to satisfy the request weights included in the request information, Information related to dates such as assortment request date, scheduled shipping date, scheduled delivery date, scheduled usage date, scheduled shipping date, etc. is set in the scheduled product data, and the scheduled product DB 135 is updated. Thereby, the process of step S5 is completed, and the production plan creation process proceeds to the process of step S6.

  In the process of step S6, the production plan creation unit 145 creates or changes the production plan based on the schedule product data updated in step S5. Specifically, the production plan creation unit 145 compares the assortment request date set in the scheduled product data with the scheduled assortment date in step S5, and the scheduled assortment date is a date before the assortment request date. If necessary, the scheduled assortment date is updated. Subsequently, the production plan creation unit 145 confirms information related to the date such as the scheduled passage time of the actual product data for allocation based on the actual product ID of the scheduled product data, so that the scheduled assembling date of the scheduled product data is in time. If necessary, the production plan is changed by updating and registering. Thereby, the process of step S6 is completed, and a series of production plan creation processes are completed.

  When ordering information is input as order information in step S1, the same processing is executed. As a result, in step S6, the production plan creation unit 145 produces a production plan based on the contract delivery date and the required weight. Create

  Further, when the input of order information is not detected in the above step S1, the control unit 14 performs a process for monitoring the presence or absence of an input indicating that a nonstandard product (disappearing product) has been manufactured (step S7). Transition. For example, the control unit 14 is realized by monitoring the input unit 11 or by monitoring the update of the component actual product DB 133. When the control unit 14 detects an input of an unsuccessful item, the process proceeds to step S3 described above. In this case, in the process of step S3, the actual product data for allocation is created excluding the configuration actual product data of the actual product ID. The processing after step S4 is performed in the same manner as described above, and the production plan is created or changed again.

  As described above, according to the production plan creation system 1 of the present embodiment, the production plan is automatically changed back to the actual product being manufactured according to the confirmation / change of the customer's scheduled use date. Therefore, it is possible to easily change the production plan according to the customer's delivery instruction without holding excessive inventory while keeping the human cost low.

  Further, the above embodiment is merely an example for carrying out the present invention, and the present invention is not limited to these, and various modifications according to specifications and the like are within the scope of the present invention. It is obvious from the above description that various other embodiments are possible within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Production plan creation system 11 Input part 12 Output part 131 Order information DB
132 Constraint DB
133 Configuration actual product DB
134 Actual product DB for allocation
135 Scheduled Product DB
REFERENCE SIGNS LIST 14 Control unit 141 Request information creation unit 142 Actual product data creation unit for allocation 143 Schedule product data creation unit 144 Schedule product allocation unit 145 Production plan creation unit

Claims (3)

A production plan creation system for creating a production plan for steel products manufactured through a plurality of processes,
Production plan creation means for creating a production plan of the steel product based on a contract delivery date;
A receiving means for receiving input of order information for each steel product including at least information on the scheduled date of use and the required weight of the steel product;
In accordance with the input of the order information, based on the production plan created by the production plan creation means, a calculation means for calculating a planned weight for each steel product produced within a predetermined period;
Linking a steel product produced within the predetermined period based on the planned weight calculated by the calculation means so that the steel product of the required weight can be delivered by the scheduled date of use. Means,
A changing unit that changes the production plan created by the production plan creating unit based on the linkage result of the order information by the linking unit;
A production plan creation system characterized by comprising:   The accepting means is capable of accepting an input for changing the scheduled weight, and when the accepting means accepts an input for changing the scheduled weight, the associating means accepts the expected weight received by the accepting means. A steel product produced within the predetermined period based on the order weight calculated by the calculating means, and the changing means is based on a result of order information linking by the linking means. The production plan creation system according to claim 1, wherein the production plan created by the production plan creation means is changed. A production plan creation method for creating a production plan for a steel product manufactured through a plurality of processes,
A production plan creation step of creating a production plan of the steel product based on a contract delivery date;
A reception step for receiving input of order information for each steel product including at least information on a scheduled date of use of the steel product and a requested weight;
In accordance with the input of the order information, based on the production plan created in the production plan creation step, a calculation step for calculating a planned weight for each steel product produced within a predetermined period;
Linking a steel product produced within the predetermined period based on the planned weight calculated by the calculation means so that the steel product of the required weight can be delivered by the scheduled date of use. Steps,
A change step of changing the production plan created in the production plan creation step based on the linkage result of the order information by the linkage step;
A production plan creation method characterized by comprising:

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