JP5444801B2 - Method and apparatus for preparing a plan for charging steel sheet products into a heat treatment furnace - Google Patents
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- 238000000034 method Methods 0.000 title claims description 65
- 238000010438 heat treatment Methods 0.000 title claims description 55
- 229910000831 Steel Inorganic materials 0.000 title claims description 54
- 239000010959 steel Substances 0.000 title claims description 54
- 238000012545 processing Methods 0.000 claims description 69
- 239000013067 intermediate product Substances 0.000 claims description 52
- 238000003860 storage Methods 0.000 claims description 44
- 239000000047 product Substances 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 25
- 238000011156 evaluation Methods 0.000 claims description 21
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Description
本発明は、鉄鋼製品の投入計画作成方法及び投入計画作成装置に関するものである。 The present invention relates to a steel product input plan preparation method and an input plan preparation device.
これまでに板状鉄鋼製品の投入計画作成に関する技術には、例えば、特許文献１または特許文献２に開示された技術がある。
There are techniques disclosed in
特許文献１に開示された技術は、複数の工程から構成される鉄鋼製品の生産プロセスにおいて発生する中間製品の置場管理方法に関する技術であり、特許文献２に開示された技術は、鋼板の製造方法に関し、特に、ヤードに山積みされた鋼板を熱処理炉に投入する際の処理に関する技術である。いずれの技術も、対象設備よりも上流の製造設備から搬入される中間製品を対象にしたものであり、上流側が自らの都合で下流に押し出す、いわゆるpush型生産計画である。
The technology disclosed in
また、特許文献３には、熱処理設備を含んだＦＭＳにおける生産方法に関し、特に熱処理を必要とするワークを効率的に加工することができる技術が開示されている。製造時間の長いボトルネック工程（熱処理）と他の工程のバランスを調整するために、納期が先の注文については上流工程から製造を開始し、納期が至近の注文については熱処理済み在庫品を充て後工程から開始するという工夫をしている。
Further,
鉄鋼業はプロセス分岐型産業である。すなわち、スケールメリットを追求して上流工程でまとめ作りした素材を、下流の複数工程に分配してさらに作りこんでゆき、最終的に需要家の仕様に合わせて製品として仕上げるという製造方法を採っている。 The steel industry is a process branching industry. In other words, a manufacturing method is adopted in which materials that are gathered in the upstream process in pursuit of economies of scale are distributed to multiple downstream processes and further created, and finally finished as products according to the specifications of the customer. Yes.
しかしながら、現在は需要家の要求が多様化し多品種生産が必要となり、同一品種大量生産に適した上述の特許文献１または特許文献２に開示された技術のようなpush型生産計画では 過剰なまとめ作りが発生しやすく、中間製品や製品の在庫が増加するという問題点があった。
However, the demands of consumers are diversified and multi-product production is required, and push-type production plans such as the technology disclosed in
また、上述の特許文献３に開示された技術を適用するとしても、寸法も化学成分も多様な注文を処理する鉄鋼業においては、適切な熱処理済み在庫品を先行製造することが困難であるという問題点があった。
Moreover, even if the technique disclosed in the above-mentioned
本発明は、上記事情に鑑みてなされたもので、中間製品や製品の在庫増加を抑制することができる板状鉄鋼製品の熱処理炉への投入計画作成方法及び装置を提供することを目的にする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method and an apparatus for creating a plan for introducing a steel product into a heat treatment furnace that can suppress an increase in inventory of intermediate products and products. .
上記課題は、以下の手段により解決できる。
［１］ 中間製品毎の板厚や納期を含む注文情報及び置場搬入済みの未処理中間製品の保管場所と段積順序を入力する状況入力処理ステップと、
置場搬入済みの未処理中間製品および未搬入の未処理中間製品の両方を対象にして熱処理炉に投入する順序を決定する投入計画作成処理ステップと、
該投入計画作成処理ステップで未搬入の未処理中間製品に付加した投入予定時刻から、未搬入の未処理中間製品の置場の上流工程を上工程とし、該上工程から前記置場まで移送される移送時間を減じた上で前記上工程に対しての払出要求時刻を出力する受入時刻要求処理ステップと、
未搬入の未処理中間製品を置場に受入する際に、板厚、処理温度および処理方法といった属性が類似している場合に同一の置場を指定することで、保管場所を決定する置場新規受入処理ステップと、
置場から中間製品を熱処理炉に投入するための製造指示をする投入指示処理ステップとを有する板状鉄鋼製品の熱処理炉への投入計画作成方法であって、
前記投入計画作成処理ステップは、処理予定材の納期遅れ評価および処理予定材の前材と処理予定材の板厚差評価との２つの評価値の各々に重み係数を乗じて加算した値を計画の納期と熱処理工程の能率についての評価指標とすることを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成方法。
The above problem can be solved by the following means.
[1] Situation input processing step for inputting order information including sheet thickness and delivery date for each intermediate product and the storage location and stacking order of unprocessed intermediate products that have already been placed in the storage space ;
An input plan creation processing step that determines the order of input to the heat treatment furnace for both the unprocessed intermediate product that has been transferred into the storage area and the unprocessed intermediate product that has not been transferred ,
From the scheduled input time added to the unprocessed intermediate product that has not been carried in in the loading plan creation processing step, the upstream process of the unprocessed intermediate product site that has not been transported is taken as the upper process, and transferred from the upper process to the storage site An acceptance time request processing step for outputting a payout request time for the upper process after reducing the time;
When receiving unprocessed intermediate products that have not been delivered to the storage site, if the attributes such as plate thickness, processing temperature, and processing method are similar, the same storage site is specified to determine the storage location. Steps,
A method of creating a plan for charging a steel sheet product into a heat treatment furnace having a charging instruction processing step for giving a manufacturing instruction for charging the intermediate product from the yard into the heat treatment furnace,
The input plan creation processing step, a value obtained by adding by multiplying a weighting factor to each of the two evaluation values of the thickness difference evaluation before material and processing scheduled material of tardiness evaluation and scheduled processing material processing scheduled material A method for creating a plan for charging a steel sheet into a heat treatment furnace, characterized by using an evaluation index for the delivery date of the plan and the efficiency of the heat treatment process .
［２］ 上記［１］に記載の板状鉄鋼製品の熱処理炉への投入計画作成方法において、
前記投入計画作成処理ステップは、処理属性が等しいか類似している製品群に対して、同一の属性コードを付加することを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成方法。
[2] In the method for creating a plan for charging the steel sheet product into the heat treatment furnace according to [1] above ,
The closing planning process step, to the product group processing attribute is for similar equal, put planning how to heat treatment furnace of the plate-shaped steel products, which comprises adding the same attribute code.
［３］ 中間製品毎の板厚や納期を含む注文情報及び置場搬入済みの未処理中間製品の保管場所と段積順序を入力する状況入力処理手段と、
置場搬入済みの未処理中間製品および未搬入の未処理中間製品の両方を対象にして熱処理炉に投入する順序を決定する投入計画作成処理手段と、
該投入計画作成処理ステップで未搬入の未処理中間製品に付加した投入予定時刻から、未搬入の未処理中間製品の置場の上流工程を上工程とし、該上工程から前記置場まで移送される移送時間を減じた上で前記上工程に対しての払出要求時刻を出力する受入時刻要求処理手段と、
未搬入の未処理中間製品を置場に受入する際に、板厚、処理温度および処理方法といった属性が類似している場合に同一の置場を指定することで、保管場所を決定する置場新規受入処理手段と、
置場から中間製品を熱処理炉に投入するための製造指示をする投入指示処理手段とを具備する板状鉄鋼製品の熱処理炉への投入計画作成装置であって、
前記投入計画作成処理手段は、処理予定材の納期遅れ評価および処理予定材の前材と処理予定材の板厚差評価との２つの評価値の各々に重み係数を乗じて加算した値を計画の納期と熱処理工程の能率についての評価指標とすることを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成装置。
[3] Situation input processing means for inputting order information including sheet thickness and delivery date for each intermediate product, and storage location and stacking order of unprocessed intermediate products that have been placed in the storage area;
An input plan creation processing means for determining the order of input to the heat treatment furnace for both the unprocessed intermediate product that has been transferred into the storage area and the unprocessed intermediate product that has not been transferred ,
From the scheduled input time added to the unprocessed intermediate product that has not been carried in in the loading plan creation processing step, the upstream process of the unprocessed intermediate product site that has not been transported is taken as the upper process, and transferred from the upper process to the storage site An acceptance time request processing means for outputting a payout request time for the upper process after reducing the time;
When receiving unprocessed intermediate products that have not been delivered to the storage site, if the attributes such as plate thickness, processing temperature, and processing method are similar, the same storage site is specified to determine the storage location. Means,
An apparatus for creating a plan for charging a steel sheet product into a heat treatment furnace comprising a charging instruction processing means for giving a manufacturing instruction for charging an intermediate product from a storage site into the heat treatment furnace,
The input plan creation processing means, a value obtained by adding by multiplying a weighting factor to each of the two evaluation values of the thickness difference evaluation before material and processing scheduled material of tardiness evaluation and scheduled processing material processing scheduled material An apparatus for creating a plan for charging a steel sheet into a heat treatment furnace, characterized by using an evaluation index for the delivery date of the plan and the efficiency of the heat treatment process .
［４］ 上記［３］に記載の板状鉄鋼製品の熱処理炉への投入計画作成装置において、
前記投入計画作成処理手段は、処理属性が等しいか類似している製品群に対して、同一の属性コードを付加することを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成装置。
[4] In the apparatus for creating a plan for introducing the steel sheet product into the heat treatment furnace according to [3] above ,
The input plan creation processing unit, to the products which process attributes are for similar equal, put planning equipment to the heat treatment furnace of the plate-shaped steel products, which comprises adding the same attribute code.
本発明によれば、置場単位の処理および置場内の製品積順を想定しつつ製品の処理順序を計画として立案して上流設備に対する製造指示として出力するようにしたので、中間製品や製品の在庫増加を抑制し、製造工期を短縮することができるようになった。 According to the present invention, the processing order of products is planned as a plan and output as a manufacturing instruction for the upstream equipment while assuming the processing of the storage unit and the product stacking order in the storage site. It was possible to suppress the increase and shorten the manufacturing period.
また、定期的に計画と実績の差異を反映して計画を修正することにより、前記効果を持続的かつ拡大させる効果もある。 In addition, there is also an effect of continuously and expanding the effect by periodically correcting the plan to reflect the difference between the plan and the actual result.
本発明を実施するための形態について、以下に説明する。図２は、本発明に係る装置構成例を示す図である。図中、１は板状鉄鋼製品の投入計画作成装置、２はデータベース、３は端末、および４は物流機器をそれぞれ表す。
The form for implementing this invention is demonstrated below. FIG. 2 is a diagram showing a configuration example of an apparatus according to the present invention. In the figure,
板状鉄鋼製品の投入計画作成装置１は、データベース２の中の各種ファイルとデータをやり取りしながら、板状製品または中間製品を対象としたハンドリング手順を計画し、端末３に表示するとともに、ハンドリングを司るクレーンなどの物流機器４に指示を送り、その指示に基づいて製品の置場運用がされる。
The plate-like steel product input
図１は、本発明に係る全体処理手順例を示す図である。図に示すように、開始から終了までStep01〜Step05の処理を順に行いながら処理を進める。処理の途中には、図２に示したデータベース２に収められた複数のファイル(注文ファイル、置場状態ファイル、置場割当ファイル、受入時刻要求ファイル、投入計画ファイル、投入指示ファイル)とデータのやり取りをしながら処理を行う。
FIG. 1 is a diagram showing an example of the entire processing procedure according to the present invention. As shown in the figure, the process proceeds while the processes of Step 01 to Step 05 are sequentially performed from the start to the end. In the middle of processing, exchange of data with a plurality of files (order file, placement status file, placement allocation file, acceptance time request file, loading plan file, loading instruction file) stored in the
図８は、注文ファイルのデータ内容の一例を示す図であり、注文id（注文番号）、板厚、寸法分類、温度、納期の情報を含む。対象設備での処理は類似板厚および類似温度の連続が能率向上に寄与する。寸法分類は置場の広さ（縦横の長さであり、注文の幅長に対応する）を定義するもので、置き場スペース有効活用のため寸法分類が同じ注文同士を配置する。図８では計3枚の注文が登録されている例を示している。 FIG. 8 is a diagram showing an example of the data content of the order file, which includes order id (order number), plate thickness, dimension classification, temperature, and delivery date information. In the processing at the target facility, the succession of similar plate thickness and similar temperature contributes to the efficiency improvement. The dimension classification defines the size of the storage area (length and width, corresponding to the width of the order), and orders with the same size classification are arranged for effective use of storage space. FIG. 8 shows an example in which a total of three orders are registered.
図９は、置場状態ファイルのデータ内容の一例を示す図である。置場コード、寸法分類、枚数のデータを含み、図９では2つの置場に計2枚の注文が置かれている例を示している。 FIG. 9 is a diagram illustrating an example of the data content of the placement state file. 9 includes data on the placement code, dimension classification, and number of sheets. FIG. 9 shows an example in which two orders are placed in two places.
図１０は、置場割当ファイルのデータ内容の一例を示す図である。注文id（注文番号）、置場コード、積順、搬入サインの情報を含む。置場コードと積順によって各注文の位置を特定し、搬入サインによって当該注文が搬入済か未搬入かを識別する。図１０の未搬入1枚（注文id：C）の置場コードおよび積順は、投入計画作成処理において新規に追加される情報である。 FIG. 10 is a diagram illustrating an example of the data contents of the placement allocation file. Includes information on order id (order number), place code, product order, and delivery sign. The position of each order is specified by the placement code and the product order, and whether the order has been loaded or not is identified by the loading sign. The placement code and product order of one undelivered piece (order id: C) in FIG. 10 are information newly added in the input plan creation process.
図１１は、受入要求時刻ファイルのデータ内容の一例を示す図である。注文id（注文番号）、受入要求時刻の情報を含む。今後投入する未搬入材について、投入予定時刻から移送時刻を減じた受入要求時刻として保存する。これは上工程に対する払出要求時刻として用いる。図１１は、未搬入材1枚（注文id：C）に対する要求受入時刻が保存されている例を示す。 FIG. 11 is a diagram illustrating an example of data contents of the acceptance request time file. Includes order id (order number) and acceptance request time information. The unloaded material to be loaded in the future is stored as an acceptance request time obtained by subtracting the transfer time from the scheduled loading time. This is used as a payout request time for the upper process. FIG. 11 shows an example in which the request acceptance time for one unloaded material (order id: C) is stored.
図１２は投入計画ファイルのデータ内容の一例を示す図であり、投入計画ファイルは処理順、注文id、投入計画時刻を含む。図１２は注文3枚の処理順が保存されている例を示す。未搬入材である注文id：Cについては、投入予定時刻07:30から移送時間3時間を減じた04:30を受入要求時刻として受入要求時刻ファイルに保存している。そして、この投入計画ファイルのデータが、投入指示処理により投入支持ファイルに出力される。 FIG. 12 is a diagram showing an example of the data content of the input plan file. The input plan file includes the processing order, order id, and input plan time. FIG. 12 shows an example in which the processing order of three orders is stored. The order is not yet carrying material id: For C, and save it to accept the request time file a 04:30 obtained by subtracting the three hours between the time of transfer from the input scheduled time 7:30 as acceptance request time. Then, the data of the input plan file is output to the input support file by the input instruction process.
なお、これらファイルの一部または全部は、板状鉄鋼製品の投入計画作成装置１の外部記憶装置のデータベース２に記憶するのではなく、板状鉄鋼製品の投入計画作成装置１の内部の記憶装置に記憶する形態をとってもよい。
Note that some or all of these files are not stored in the
先ず、Step01状況入力処理では、注文情報及び仕掛中の未処理中間製品の保管場所と段積順序を入力する。次に、Step02投入計画作成処理では、仕掛済み中間製品および未到着中間製品の両方を対象にして処理順序を決定する。 First, in the Step 01 status input process, the order information, the storage location of the unprocessed intermediate product in process and the stacking order are input. Next, in Step 02 input plan creation processing, the processing order is determined for both in-process intermediate products and unarrived intermediate products.
そして、Step03受入時刻要求処理では、Step02で未到着中間製品に付加した投入予定時刻から移送時間を減じた上で上工程に対しての払出要求時刻を出力する。さらに、Step04置場新規受入処理では、未到着中間製品を置場に受入する際に保管場所を決定する。そして、最後のStep05投入計画処理では、置場から中間製品を処理するための作業指示を作成する。 Then, in Step03 acceptance time request processing, and outputs a payout request time against the upper step on minus between when transported from input scheduled time obtained by adding the non-arrival intermediate product on step02. In addition, Step04 yard in a new acceptance process, to determine the storage field office at the time of acceptance of the non-arrival intermediate product in yard. In the final Step 05 input plan process, a work instruction for processing the intermediate product is created from the storage location.
本発明によれば、
注文情報および置場状態データを入力して対象設備入側の複数置場における搬入済みで未処理の中間製品の配置状態、すなわち置場の番号と積順を参照し、
未搬入の中間製品については製造進捗状況、すなわち製造指示未作成・製造指示済みで未製造、製造済みで未搬入などの情報を参照し、
置場毎に連続的に処理を行う運用方法に基づいて搬入済みおよび未搬入のすべての中間製品について対象設備での処理順序を決定し、
製造済みで未搬入の中間製品については前記処理順序を参照して今後搬入すべき置場を割当て、製造指示未作成の製品については製造指示を作成するようにしたから、
クレーン作業に対する積順変更の制約が発生しにくい状況を維持して能率向上が可能な処理順序を実現することができるようになった。
According to the present invention,
Enter order information and placement status data, and refer to the placement status of the unprocessed intermediate products that have been delivered at multiple locations on the target equipment entry side, that is, the placement number and product order,
For intermediate products that have not been imported, refer to the manufacturing progress status, that is, information such as manufacturing instructions not yet created / manufactured instructions not yet manufactured, manufactured but not imported, etc.
Determine the processing order at the target equipment for all intermediate products that have been loaded and not loaded based on the operation method that processes continuously for each storage site,
For the intermediate products that have been manufactured and have not yet been delivered, the storage order should be assigned with reference to the above processing order, and the manufacturing instructions have been created for products that have not yet been produced.
It has become possible to realize a processing order that can improve efficiency while maintaining a situation in which restrictions on changing the product order for crane work are unlikely to occur.
図７は、本実施例で対象とした設備を模式的に示す図である。図中、１０は熱処理炉および１１は鋼板をそれぞれ表す。 FIG. 7 is a diagram schematically showing the equipment targeted in this embodiment. In the figure, 10 represents a heat treatment furnace and 11 represents a steel plate.
熱処理工程では、図７に示すように、熱処理炉１０が一方向の搬送系として構成され、熱処理の対象となる複数の鋼板１１を熱処理炉３０の入り側から順番に投入する。そして、熱処理炉３０内の最も出側にある鋼板が所定温度に到達した段階で、その鋼板を抽出する。鋼板が抽出された後は、熱処理炉３０内で鋼板の前詰を行って空き場所に後続の鋼板を投入する作業を繰り返す。
In the heat treatment step, as shown in FIG. 7, the
熱処理工程においては、処理対象の鋼板１１に対する処理属性として、温度、板厚、形状（長さ、幅）などのパラメータを設定できるが、ここでは重要なパラメータとして温度及び板厚に着目し、例えば、温度５区分、板厚４区分のようにそれぞれ所定数に区分する。そして、処理属性が同一の区分に属する鋼板の熱処理を連続的に行うことにより、熱処理に伴う段取り時間を最小化でき、熱処理工程における生産量を高めることができる。
In the heat treatment process, parameters such as temperature, plate thickness, shape (length, width), etc. can be set as processing attributes for the
熱処理炉３０内に同時に存在する複数の鋼板を加熱する場合は、均一の温度で加熱することが望ましい。ただし、完全に同一の温度でなくても複数の鋼板間の温度差が所定の範囲内に入っていれば許容される。複数の鋼板を加熱するときに温度差が大きくなる場合は、熱処理炉内の雰囲気温度を変更する必要があり、昇温・降温などの操作を行うことになる。この場合、昇温・降温を行うには数十分〜数時間程度の段取り時間が要求されるため、その分だけ熱処理工程における生産量が減少することになる。 When heating a plurality of steel plates present simultaneously in the heat treatment furnace 30, it is desirable to heat them at a uniform temperature. However, even if the temperatures are not completely the same, it is acceptable if the temperature difference between the plurality of steel plates is within a predetermined range. When a temperature difference becomes large when heating a plurality of steel plates, it is necessary to change the atmosphere temperature in the heat treatment furnace, and operations such as temperature increase / decrease are performed. In this case, since a setup time of about several tens of minutes to several hours is required to raise and lower the temperature, the production amount in the heat treatment process is reduced by that amount.
また、熱処理炉３０内に同時に存在する複数の鋼板の存炉時間は、できるだけ均等にすることが望ましい。複数の鋼板の中で在炉時間が他より突出して長いものが存在すると、最も低能率の鋼板により全ての鋼板が律速されることになり、熱処理工程の生産量は減少する。在炉時間は鋼板の板厚に強く依存するので、複数の鋼板の板厚がほぼ同一か、所定の許容範囲内に入っていることが、待ち時間が発生せず能率上望ましい。高能率操業を考慮して、置場への配置は板厚が類似したグループ単位で行う。例えば板厚30mm以下なら±10mmのレンジに含まれる中間製品群を同一グループとする、などである。 Moreover, it is desirable that the furnace times of a plurality of steel plates simultaneously existing in the heat treatment furnace 30 be as uniform as possible. If there is a plurality of steel plates that have a longer in-furnace time than others, all the steel plates are rate-controlled by the steel plate with the lowest efficiency, and the production amount of the heat treatment process decreases. Since the in-furnace time strongly depends on the plate thickness of the steel plate, it is desirable in terms of efficiency that the plate thickness of the plurality of steel plates is substantially the same or within a predetermined allowable range because no waiting time occurs. In consideration of high-efficiency operation, placement in the yard is done in groups with similar thickness. For example, if the plate thickness is 30 mm or less, the intermediate product group included in the range of ± 10 mm is made the same group.
熱処理工程に先立つ鋼板を各置場へ置く際は、共通の処理属性を単位にハンドリングが行われる。鋼板１１のハンドリングにはクレーンを用いるので、熱処理炉３０に同時に投入できない鋼板が混在すると、熱処理工程にて鋼板の仕分け作業が必要となる。これにより熱処理炉が鋼板の投入待ちの状態となり、機会損失が発生することになるので、かかる事態を回避すべく処理属性単位で鋼板のハンドリングを行う。
When a steel plate prior to the heat treatment process is placed in each place, handling is performed in units of common processing attributes. Since a crane is used for handling the
図３は、投入計画作成処理における詳細処理フロー例を示す図である。ここでは、すでに置場に搬入された中間製品は置場単位で、また搬入の中間製品については一品単位で両方を対象として投入計画を作成する。 FIG. 3 is a diagram illustrating an example of a detailed process flow in the input plan creation process. Here, an input plan is created for both intermediate products that have already been transferred to the storage site and for each intermediate product that has been transferred.
投入計画には、完全に新規の投入計画を作成する場合と、前回計画からの再計画の場合がありうる。よってStep102とStep103でデータ入力後、まず、新規か再計画かを識別する(Step104)。さらに再計画の場合に、直近の計画についてはすでに作業中であり再計画できない部分が存在する可能性がある(Step105)。これら計画固定部分については、計画固定サインを指定して処理を起動し、処理内で末尾を識別して以降の計画の起点とする(Step106)。固定部分がない場合は仮想注文を設定して計画の起点とする(Step107)。 The input plan can be a completely new input plan or a re-plan from the previous plan. Therefore, after inputting data in Step 102 and Step 103, first, it is identified whether it is new or re-planning (Step 104). Further, in the case of re-planning, there is a possibility that there is a part that is already in operation and cannot be re-planned for the most recent plan (Step 105). For these fixed plan parts, the process is started by designating a fixed plan sign, and the end of the process is identified as the starting point of subsequent plans (Step 106). If there is no fixed part, a virtual order is set as the starting point of the plan (Step 107).
Step108では、納期遅れ評価および前材と当材の板厚差評価を重みつき加算した評価値を用いて処理の優先順を評価し、順次配置してゆく。ここで搬入済の置場単位の評価については、本実施例では最早納期および平均板厚を用いるものの、他に異なる納期の平均をとる方式を採用しても良い。 In Step 108, the priority order of the processing is evaluated using the evaluation value obtained by adding the weighted evaluation of the delivery delay evaluation and the thickness difference evaluation between the previous material and the current material, and sequentially arranges them. Here, for the evaluation of the storage unit that has been loaded, in this embodiment, the earliest delivery date and the average plate thickness are used, but another method of taking an average of different delivery dates may be adopted.
制約条件としては、未搬入中間製品の最早処理可能時刻がある。そして、この制約を充足する解を探索する。探索して得られた投入計画結果に対して、板厚や処理温度、処理方法など属性が類似する連続した未搬入材には、同一の置場コードを付加する(Step110)。そしてStep112で、投入計画をファイル出力して一連の処理を終了する。 As a constraint condition, there is an earliest processable time for an undelivered intermediate product. Then, a solution that satisfies this restriction is searched. The same placement code is added to consecutive unloaded materials whose attributes such as plate thickness, processing temperature, processing method, etc. are similar to the input plan result obtained by the search (Step 110). In step 112, the input plan is output to a file, and the series of processing ends.
図４は、投入計画の結果の一例(置場割当)を示す図である。図中、黒点は各中間製品を、横軸は投入順序を、縦軸は板厚をそれぞれ表し、破線で囲んだ部分は同一置場または同一置場コードを示している。 FIG. 4 is a diagram showing an example (placement allocation) of the result of the input plan. In the figure, the black dots represent the intermediate products, the horizontal axis represents the loading order, the vertical axis represents the plate thickness, and the portions surrounded by broken lines indicate the same placement or the same placement code.
図５は、前回計画から状況が変化した場合の再計画開始時点の例を示す図である。図中で□印は前回計画以降に加わった緊急材であり、破線の丸印は搬入予定がなくなった製品を示す。このように再計画においては、当初計画を基本としながら緊急材の投入を割り込ませ、さらに搬入予定の変更も反映した計画を立案する。 FIG. 5 is a diagram illustrating an example of a re-planning start time when the situation has changed from the previous plan. In the figure, □ indicates emergency materials added since the previous plan, and the dotted circle indicates products that are no longer scheduled for delivery. In this way, in the re-planning, an emergency material input is interrupted based on the initial plan, and a plan reflecting the change of the carrying-in schedule is made.
図６は、図５に対しての再計画結果の例を示す図である。緊急材の板厚が大きいため、前回計画では同一グループだった未搬入材群が複数のグループに分割して配置されて、緊急材の前後を挟み込む順序に変更することで、板厚差が小さくなる再計画結果が得られている。 FIG. 6 is a diagram illustrating an example of a re-planning result for FIG. Because the thickness of the emergency material is large, the unloaded material group, which was the same group in the previous plan, is divided into multiple groups, and the order of sandwiching the front and back of the emergency material is changed to reduce the thickness difference. A replanning result is obtained.
１ 板状鉄鋼製品の投入計画作成装置
２ データベース
３ 端末
４ 物流機器
１０ 熱処理炉
１１ 鋼板
DESCRIPTION OF
Claims (4)
置場搬入済みの未処理中間製品および未搬入の未処理中間製品の両方を対象にして熱処理炉に投入する順序を決定する投入計画作成処理ステップと、
該投入計画作成処理ステップで未搬入の未処理中間製品に付加した投入予定時刻から、未搬入の未処理中間製品の置場の上流工程を上工程とし、該上工程から前記置場まで移送される移送時間を減じた上で前記上工程に対しての払出要求時刻を出力する受入時刻要求処理ステップと、
未搬入の未処理中間製品を置場に受入する際に、板厚、処理温度および処理方法といった属性が類似している場合に同一の置場を指定することで、保管場所を決定する置場新規受入処理ステップと、
置場から中間製品を熱処理炉に投入するための製造指示をする投入指示処理ステップとを有する板状鉄鋼製品の熱処理炉への投入計画作成方法であって、
前記投入計画作成処理ステップは、処理予定材の納期遅れ評価および処理予定材の前材と処理予定材の板厚差評価との２つの評価値の各々に重み係数を乗じて加算した値を計画の納期と熱処理工程の能率についての評価指標とすることを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成方法。 A status input processing step for inputting order information including the thickness and delivery date of each intermediate product and the storage location and stacking order of unprocessed intermediate products that have been placed in the storage area;
An input plan creation processing step that determines the order of input to the heat treatment furnace for both the unprocessed intermediate product that has been transferred into the storage area and the unprocessed intermediate product that has not been transferred ,
From the scheduled input time added to the unprocessed intermediate product that has not been carried in in the loading plan creation processing step, the upstream process of the unprocessed intermediate product site that has not been transported is taken as the upper process, and transferred from the upper process to the storage site An acceptance time request processing step for outputting a payout request time for the upper process after reducing the time;
When receiving unprocessed intermediate products that have not been delivered to the storage site, if the attributes such as plate thickness, processing temperature, and processing method are similar, the same storage site is specified to determine the storage location. Steps,
A method of creating a plan for charging a steel sheet product into a heat treatment furnace having a charging instruction processing step for giving a manufacturing instruction for charging the intermediate product from the yard into the heat treatment furnace,
The input plan creation processing step, a value obtained by adding by multiplying a weighting factor to each of the two evaluation values of the thickness difference evaluation before material and processing scheduled material of tardiness evaluation and scheduled processing material processing scheduled material A method for creating a plan for charging a steel sheet into a heat treatment furnace, characterized by using an evaluation index for the delivery date of the plan and the efficiency of the heat treatment process .
前記投入計画作成処理ステップは、処理属性が等しいか類似している製品群に対して、同一の属性コードを付加することを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成方法。 In the method of creating a plan for charging the plate-like steel product according to claim 1 into a heat treatment furnace,
In the charging plan creation processing step, the same attribute code is added to a group of products having the same or similar processing attributes.
置場搬入済みの未処理中間製品および未搬入の未処理中間製品の両方を対象にして熱処理炉に投入する順序を決定する投入計画作成処理手段と、
該投入計画作成処理ステップで未搬入の未処理中間製品に付加した投入予定時刻から、未搬入の未処理中間製品の置場の上流工程を上工程とし、該上工程から前記置場まで移送される移送時間を減じた上で前記上工程に対しての払出要求時刻を出力する受入時刻要求処理手段と、
未搬入の未処理中間製品を置場に受入する際に、板厚、処理温度および処理方法といった属性が類似している場合に同一の置場を指定することで、保管場所を決定する置場新規受入処理手段と、
置場から中間製品を熱処理炉に投入するための製造指示をする投入指示処理手段とを具備する板状鉄鋼製品の熱処理炉への投入計画作成装置であって、
前記投入計画作成処理手段は、処理予定材の納期遅れ評価および処理予定材の前材と処理予定材の板厚差評価との２つの評価値の各々に重み係数を乗じて加算した値を計画の納期と熱処理工程の能率についての評価指標とすることを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成装置。 Status input processing means for inputting order information including the thickness and delivery date of each intermediate product and the storage location and stacking order of unprocessed intermediate products that have been placed in the storage area;
An input plan creation processing means for determining the order of input to the heat treatment furnace for both the unprocessed intermediate product that has been transferred into the storage area and the unprocessed intermediate product that has not been transferred ,
From the scheduled input time added to the unprocessed intermediate product that has not been carried in in the loading plan creation processing step, the upstream process of the unprocessed intermediate product site that has not been transported is taken as the upper process, and transferred from the upper process to the storage site An acceptance time request processing means for outputting a payout request time for the upper process after reducing the time;
When receiving unprocessed intermediate products that have not been delivered to the storage site, if the attributes such as plate thickness, processing temperature, and processing method are similar, the same storage site is specified to determine the storage location. Means,
An apparatus for creating a plan for charging a steel sheet product into a heat treatment furnace comprising a charging instruction processing means for giving a manufacturing instruction for charging an intermediate product from a storage site into the heat treatment furnace,
The input plan creation processing means, a value obtained by adding by multiplying a weighting factor to each of the two evaluation values of the thickness difference evaluation before material and processing scheduled material of tardiness evaluation and scheduled processing material processing scheduled material An apparatus for creating a plan for charging a steel sheet into a heat treatment furnace, characterized by using an evaluation index for the delivery date of the plan and the efficiency of the heat treatment process .
前記投入計画作成処理手段は、処理属性が等しいか類似している製品群に対して、同一の属性コードを付加することを特徴とする板状鉄鋼製品の熱処理炉への投入計画作成装置。 In the apparatus for creating a plan for charging a plate-like steel product according to claim 3 into a heat treatment furnace,
The charging plan creation processing means adds the same attribute code to a group of products having the same or similar processing attributes, and a charging plan creation device for a plate steel product into a heat treatment furnace.
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