JP4449962B2 - Board manufacturing method and board shipping method - Google Patents

Description

  The present invention relates to a plate manufacturing method and a plate shipping method in an iron factory.

  In general, steel manufacturers sell and ship plate materials generated in a coil shape or a sheet shape through a steel making process and a rolling process as products to parts manufacturers and assembly manufacturers.

  FIG. 9 shows the relationship among steel manufacturers, component manufacturers, and assembly manufacturers. The steel manufacturer 1 sells the plate material 2 generated in a coil shape or a sheet shape to the component manufacturer 3. The component manufacturer 3 cuts or presses the plate material 2 which is a semi-finished product purchased from the steel manufacturer 1 into a predetermined shape to produce a plurality of plate components 4, and delivers the produced plate components 4 to the assembly manufacturer 5. . The assembly maker 5 manufactures the final product 6 using the delivered plate parts 4 and sells it to the consumer.

  When the assembly manufacturer 5 is a machine manufacturer or an automobile manufacturer that possesses a cutting device or a press device for the plate material 2, the assembly manufacturer 5 does not go through the parts manufacturer 3 but directly from the steel manufacturer 1. Or the sheet-like board | plate material 2 is purchased, and it cuts and presses in-house.

  An assembly maker 5 such as an automobile maker takes parts (product collection) from the plate material 2 before cutting and pressing. In this case, the plate part 4 can be most efficiently obtained from the limited material. In some cases, optimization calculation is performed. In addition, about the specific calculation method itself which joins the several board components 4 from which the shape and the required number of sheets differ from this one or several board material 2 has already been proposed (patent document 1, patent document 2, (See Patent Document 3).

  These calculation methods enable efficient product collection, but no consideration is given to defects.

  In general, a steel manufacturer 1 performs a defect inspection on a coiled or sheet-like plate material 2 to be produced. In this defect inspection, cavities and cracks existing inside the plate material 2, cracks exposed on the surface, scratches and dirt on the surface, and the like are detected as defects. If the detected defect of the plate material 2 is so serious that the commercialization of the plate material 4 is hindered, the arrangement calculation itself may be performed depending on the position of the defect, even if efficient arrangement calculation is performed. Can become meaningless.

  Therefore, when ordering the plate material 2, the parts manufacturer 3 or the assembly manufacturer 5 instructs the steel manufacturer to delete the defective portion and deliver it, or the defect per predetermined amount (length) of the plate material 2. Add an upper limit to the number.

  As shown in FIG. 10, the component manufacturer 3 or the assembly manufacturer 5 generally performs assembling calculation of a plurality of plate components 4 having different uses, shapes, and required numbers as shown in FIG. 10 with respect to the plate material 2 after the defect position is removed. Is performed using a computer, and the plate material 2 is cut based on the calculation result using a cutting device (cutter) to obtain a plurality of plate parts 4 having different shapes.

  In addition, after removing the defect, the plate part 4 may be manufactured after performing an advanced assembling calculation (the “third method” described later), but in reality, the defect per length of the plate material 4 In many cases, parts are picked up ignoring the defect position on the assumption that there is an upper limit in the number of pieces ("second method" described later).

  Recently, a shipping method has been started in which a defect is not removed from the plate material 2 (particularly, a coiled steel strip), and the defect position is marked with ink or the like and shipped from a steel manufacturer. In the case of such a material with marking, the part is removed while the coil is rewound, and when the marking is detected and a defect is found, the part can be removed, and further part removal can be continued (described later, “No. Method 2)). With such a method, efficient parts removal can be performed for parts having a relatively simple shape.

  About the 1st-3rd method, the specific example in the case of obtaining the some board component 4 from which the shape differs from the board | plate material 2 of the state in which the defect was contained here is demonstrated using FIG. 11, FIG. .

  In order to simplify the explanation, it is assumed that the width of the plate material 2 and the plate component 4 is the same. As shown in FIG. 11, a serious defect 7 having a size of 10 cm exists in the length direction at a position 3 m away from the head position of the plate material 2, and 10 cm in the length direction at a position 8 m away from the head position of the plate material 2. There are minor defects 8.

  From this plate material 2, as shown in FIG. 12, eight plate components 4a having a length of 90 cm and six plate components 4b having a length of 130 cm are obtained. That is, in order to manufacture the final product 6, this number of plate parts 4a and 4b is required. The serious defect 7 is a defect that should not be included in any of the plate components 4a and 4b, and the minor defect 8 is a defect that may be included in the plate component 4a.

  And the length of the board | plate material 2 required in order to obtain a total of 14 board | plate components 4a and 4b shown in FIG. 12 is calculated | required. The following first to third methods are methods for removing plate parts from a plate material 2 having a predetermined length.

1st method It is a case where the board | plate material 2 is simply cut | disconnected from the head and the board | plate component 4 is obtained, without considering positions, such as a defect.

  The orderer (order receiver) orders the material 2 by specifying, for example, that the number of defects is 3 or less over the entire length of the plate material 2. In this case, it is assumed that, in the worst case, the three cut plate parts 4a and 4b include a defect and cannot be used. Further, in this case, it is assumed that defects are concentrated on the longer (130 cm) plate component 4b. Then, in order to reliably obtain the necessary number of plate parts 4a and 4b by this method, it is necessary to order the plate material 2 having a length of 90 × 8 + 130 × (6 + 3) = 1890 cm.

  In this case, assuming that the defect position is unknown, eight plate components 4a 90 cm long and nine 130 cm long plate components 4b are unconditionally taken from the top. However, since the actual defects 7 and 8 exist at the positions shown in FIG. 11, a total of 220 cm including one plate component 4a and one plate component 4b is not a product, and two plate components 4b (260 cm). Long) Remaining material. However, since one plate component 4a is insufficient, the remaining plate component 4b is used. As a result, 260 cm of the plate material 2 is not a product, and one piece of the plate component 4b is a surplus material.

Second Method The steel manufacturer 1 determines the position of the defects 7 and 8 and the degree of the defect (the type of the defect such as the baldness, the roll mark, and the scab, the seriousness in the case of the defective type, or the type and the seriousness. Inspect the overall defect severity evaluation (in this specification, “defect level” refers to any of these), and mark it to the orderer (customer). The order (shipment) length of the plate material 2 is assumed to be the same as the first method in order to evaluate the first to third methods in the form of the number of remaining materials. If there is a marking when cutting the corresponding plate material 2, the orderer (order receiving party) cuts away from the marking position.

  When the plate components 4a are sequentially cut from the top of the plate material 2 in FIG. 11, there is a defect on the fourth sheet, so that 40 cm is deleted and the fourth sheet is cut from 310 cm. After the cutting of the fourth piece of the plate component 4a is completed, the cutting of the plate component 4b is started. In this case, since the first plate component 4b is defective, cutting of the plate component 4b is performed from 810 cm except for 760 cm to 810 cm. After taking the predetermined amount (six pieces) of the plate component 4b, 300 cm of the plate material 2 becomes a surplus material. From this surplus material, three plate components 4a or two plate components 4b are sampled. be able to.

Third Method The steel manufacturer 1 inspects the positions of the defects 7 and 8 and the defect scale, and ships the corresponding plate material 2 to the orderer (order receiver) in a state where the defects 7 and 8 are removed. For the above reason, the order (shipment) length of the plate material 2 is the same as that of the first method. As shown in FIG. 11, since there are two defects 7 and 8 in the plate material 2, the plate material 2 is divided into three (300 cm, 490 cm, 1100 cm) and shipped. As compared with the first method and the second method, the workability with respect to the plate material 2 is greatly complicated. That is, processing efficiency such as cutting is reduced.

When the plate components 4a and 4b are obtained in order from the tip of each plate material 2, the total surplus material of the plate material 2 is 320 cm, but the final result is the same as the first and second methods. .
JP-A-6-142724 Japanese Patent Laid-Open No. 6-149850 JP 11-39358 A

  However, the conventional method described above still has the following problems to be solved.

  In the case where the defective portion is cut and deleted as in the third method, especially in the case where the plate material 2 is coiled, the number of the plate material 2 increases, so that the component manufacturer 3 and the assembly manufacturer 5 The work efficiency of mounting and removing the plate material 2 with respect to the cutting device and the press device is greatly reduced.

  Further, in the first to third methods, depending on the order quantity of the plate material 2, even if the weight, length, defect rate, etc. of the plate material 2 satisfy the specifications of the orderer (order receiver), there are defects. Depending on the parts 7 and 8, the required number of plate parts may not be obtained. Further, if a large amount of the plate material 2 is ordered in anticipation of this, the plate component 4 is produced more than necessary, and a large amount of surplus material is generated.

  That is, it is necessary to order a larger amount of the plate material 2 in the worst case where the defects are concentrated only on the plate component having a large shape. In addition, work for examining the presence or absence of defects in each plate component 4 obtained by cutting later also occurs. For this reason, resources and expenses are wasted, leading to an increase in manufacturing cost (cost) of the final product in the assembly maker 5.

  Furthermore, a problem common to the first to third methods is that the position of the defect and the scale (degree) of the corresponding defect are detected, but the degree of the defect (for example, the intensity is high but the gloss is insufficient). ) And the part and type in the plate part 4 cannot be reflected in the plate-cutting in some cases (for example, welding, back surface, etc.). In this case, the corresponding plate component 4 is uniformly discarded as a defective product. Therefore, the component manufacturing yield deteriorates depending on the position of the defect.

  In addition, the plate assembly calculation is performed by the component manufacturer 3 and the assembly manufacturer 5 as necessary, but the component manufacturer 3 and the assembly manufacturer 5 (particularly the component manufacturer) have a small scale. Such small-scale manufacturers often do not have know-how for assembling calculation, and it is difficult to perform assembling calculation of an appropriate board with a high yield.

  The present invention has been made in view of such circumstances, realizes more efficient plate assembling in consideration of defect information, and can greatly contribute to productivity improvement and manufacturing cost reduction. It is an object of the present invention to provide a method for manufacturing a plate capable of improving the service to the user and a method for shipping a plate using the manufacturing method.

  The inventor found that the above problem arises because the design information of products (plate parts) is unevenly distributed to the orderer side of assembly manufacturers and parts manufacturers, etc., and the defect information of steel sheets and strips is the manufacturer of steel manufacturers, etc. We focused on the fact that it was unevenly distributed to the side. In other words, the orderer owns detailed information on how much or at what position a defect can be tolerated for a certain part, and the steel manufacturer uses an advanced defect inspection device based on manufacturing status information. By making full use, etc., we possess detailed defect information (type of defects such as baldness, roll mark, rank and position of each defect).

  That is, the first gist of the present invention is to obtain product shape information in advance on the steel manufacturer side that can acquire detailed information of defects earliest and determine a product cutout position based on both pieces of information. In this way, it is possible to make an accurate merchandise decision at the earliest timing, so that the steel manufacturer can ship a minimum amount of plate material. Alternatively, it is possible to provide useful information to the orderer so that more parts can be picked up with respect to the order quantity.

  The second essence of the present invention is that the computer executes the part assembling calculation based on the product shape information and the specific defect position information. In other words, due to circumstances such as the uneven distribution of information described above, it has not been conventionally performed to include detailed defect position information in the calculation conditions when performing assortment calculation. Will be able to do. This is made from the viewpoint of eliminating the uneven distribution of product shape information as electronic information and specific defect position information.

  Specifically, it is realized by the following means.

That is, in the plate manufacturing method of the present invention, the step of manufacturing the ordered steel plate or steel strip, the step of performing a defect inspection on the manufactured steel plate or steel strip, and the steel plate or steel strip are obtained by cutting. From the order parts file that stores the shape information of the plate parts that are products, the step of inputting the information to the computer, the shape of the manufactured steel plate or steel strip, and the defect site information obtained by performing the defect inspection Based on the process of inputting the information to the computer, the shape information of the plate component, the shape of the steel plate or the steel strip, and the defect site information, the product of the plate component is commercialized by computer calculation. A step of executing a plate assembling calculation for determining a cutting position in the steel plate or steel strip to obtain a plate component while avoiding a defect that hinders, and based on the result of the plate assembling calculation, the steel plate Includes the step of determining a shipping size or shipping weight of the steel strip.

  In the plate manufacturing method configured as described above, an ordered steel plate or steel strip is manufactured, and further, a defect inspection of the manufactured steel plate or steel strip is performed. And if the shape information of goods and the defect site | part information of a steel plate or a steel strip are input, a defect site | part will be removed automatically and the cutting position of the product of a board will be determined efficiently. The defect site information includes at least defect position information. Then, based on the plate assembling calculation result, the shipping size or shipping weight of the steel plate or steel strip is determined.

According to another invention, in the board manufacturing method according to the invention described above, the shape information of the plate parts includes information on the shape of each product and the degree of defects that can be tolerated for commercialization, and the defect site information indicates a defect position. And defect degree information. Further, in the step of inputting the shape information of the board component, the product shape information and the information on the degree of defects that can be tolerated for commercialization are input to the computer from the received order file storing the shape information of the board component. In the step of inputting the defect site information, the shape and the defect information are input to the computer from the plate material file storing the shape of the steel plate or steel strip and the defect site information.

And, in the process of executing the assortment calculation, based on the product shape information, information on the degree of defects that can be accepted at the time of commercialization, shape and defect information, the degree that is unacceptable for the assembled products for the steel plate or steel strip The computer executes a plate assembling calculation for determining the cutting position so as to avoid the defects.

  Furthermore, another invention is a method for shipping plates. In this plate shipping method, the cutting position information obtained from the plate assembling calculation result in the manufacturing method of the invention is also attached to the steel plate or the steel strip manufactured in the manufacturing process of the manufacturing method of the invention. To be shipped.

  In the plate shipping method configured as described above, the cutting position information is attached to the steel plate or steel strip to be shipped. When such position information is attached, a plate processor and a plate user can actually perform efficient plate cutting. Moreover, even if there is no know-how related to plate cutting, accurate product acquisition can be carried out by cutting a steel plate or steel strip delivered according to the attached position information.

  In other words, automakers tend to outsource the ordering and processing of steel plates to auto parts manufacturers, but these parts manufacturers have little experience in handling steel, and what kind of plate cutting is required for what kind of defects. In many cases, there is little accumulation of knowledge about what to do. Therefore, when the cut position information is attached to the delivered steel plate or steel strip as in the present invention, the component manufacturer can easily cut the steel plate or steel strip using the cutting device.

  In the plate shipping method according to another invention, the cut position information is marked on the steel plate or steel strip itself to be shipped.

  In the method of shipping a plate configured in this way, if the steel plate or steel strip component processing manufacturer performs a cutting process on the corresponding steel plate or steel strip in accordance with the mark described on the supplied steel plate or steel strip. Good. Therefore, it is possible to improve work efficiency in the parts processing manufacturer.

  Furthermore, in another board shipping method, the cut position information is recorded on a recording medium or attached as digital information communicated via a network.

  In the board shipping method configured as described above, the cutting position information is input to the component processing manufacturer as digital information. Therefore, by setting the digitized cutting position information to, for example, a cutting device, the cutting position information is received. The work efficiency of the cutting work on the steel plate or steel strip can be further improved.

  According to the present invention, it is possible to realize more efficient plate assembling in consideration of defect information, greatly contributing to yield improvement, productivity improvement, and manufacturing cost reduction, and further improving service to users at the shipping destination. it can.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing a schematic configuration of a board manufacturing and sales system to which a board manufacturing method according to an embodiment and a board shipping method for shipping a board manufactured by the manufacturing method are applied.

  For the network 11 such as the Internet, the steel manufacturer network server 13 of the steel manufacturer system 12, the transport company network server 15 of the transport company system 14, the parts manufacturer network server 17 of the parts manufacturer system 16, and the assembly manufacturer network of the assembly manufacturer system 18 A server 19 is connected.

  Each system 12, 14, 16, 18 is configured by an information processing apparatus such as a computer, and each of the other systems 12-15 via network servers 13, 15, 17, 19 and network 11 connected to the own system. 18 can exchange information.

  FIG. 2 is a sequence diagram showing a flow of information exchange performed between the systems 12, 14, 16, and 18 with respect to board sales. In FIG. 2, the assembly manufacturer does not purchase the plate material 2 directly from the steel manufacturer, but cuts it into a plate component 4 as a product that can be incorporated into the product 6 as it is. Indicates the case of purchasing from a manufacturer.

  The assembly manufacturer formulates a production plan for the product 6, and in the process, order information for the plate part 4 (order information) that is necessary for the production of the product 6 and includes the usage, shape, usable defect level, and required number of pieces. (S1), the network server 17 of the component manufacturer is accessed via the network 11, and an order is placed with the component manufacturer (S2).

  When the parts manufacturer receives the order information (ordering information) for the plate part 4 from the assembly manufacturer, the dimensions are determined in consideration of the welding allowance (excess part necessary for welding) and the cutting allowance, and the thickness and The material strength is determined, and the presence / absence and specifications of plating are further determined as necessary. Then, the parts manufacturer accesses the network server 13 of the steel manufacturer via the network 11, and transmits the order information of the determined new specification to the steel manufacturer (S3).

  When the steel maker 12 receives the order information (ordering information) of the plate part 4 from each part maker, based on the order information (ordering information), the sheet material 2 in the form of a coil as a steel strip or a sheet as a steel plate Is manufactured (S4). If there is a stock, it is not necessary to immediately manufacture the plate material 2. When the manufacture of the coil-shaped or sheet-shaped plate material 2 is completed, the steel manufacturer carries out a defect inspection for the manufactured plate material 2 (S5). In this defect inspection, as shown in FIG. 11, the positions and extents of the defects 7 and 8 in the plate material 2 to be inspected are detected.

  When the defect inspection is finished, the plate material 2 after the completion of the defect inspection is subjected to a calculation for assembling each plate part 4 with respect to the order information received first (S6). This calculation is performed based on the shape information of the plate component 4 and the defect information of the plate material. When the assembling calculation of each plate component 4 is completed, the steel manufacturer accesses the network server 15 of the shipping company via the network 11 and places an order for a shipping request for the component manufacturer of the plate material 2 from the shipping company (S7). . At the same time, information on the final assembling calculation result is transmitted to the component manufacturer (S8).

  The transportation company arranges delivery of the plate material 2 (S9), and transports the plate material 2 from the steel manufacturer to the parts manufacturer (S10). Further, the steel manufacturer transmits a bill to the component manufacturer via the network 11 (S11).

  The parts manufacturer uses its own cutting device to cut the delivered plate material 2 in accordance with the final assembling calculation result received, and the designated number of board parts 4 having the shape designated by the order information (order information). Is manufactured (S12). Then, a transportation request for the assembly manufacturer of the plate component 4 is transmitted to the transportation company (S13).

  The transportation company arranges delivery of the plate component 4 (S14), and transports the plate component 4 from the component manufacturer to the assembly manufacturer (S15). Furthermore, the parts manufacturer transmits an invoice to the assembly manufacturer via the network 11 (S16).

  The assembly manufacturer pays the amount indicated by the invoice to the component manufacturer as a price for the plate component 4 (S17). The parts manufacturer pays the price for the plate material 2 to the steel manufacturer (S18). Then, the assembly maker manufactures the product 6 using the plate component 4 (S19).

  In the plate manufacturing and sales system configured as described above, a parts maker (orderer) includes a plurality of plates having different uses, shapes, and required numbers, together with the plate material 2 ordered by the steel manufacturer. The result of assembling calculation for part 4 is sent. Therefore, it is not necessary for the parts manufacturer (orderer) to perform the assembling calculation for the plate material 2 including complicated calculation processing using its own computer, and the received assembling calculation result using its own cutting device. The required plate material 4 can be efficiently obtained by cutting the corresponding plate material 2 using.

  In the system of the embodiment shown in FIG. 2, an assembling calculation for the plate material 2 is transmitted from the steel manufacturer to the parts manufacturer via the network 11, but the assembling calculation for the plate material 2 is written in a storage medium such as an FD. It is also possible to deliver to the component manufacturer in a state attached to the plate material 2.

  Further, for steel makers, they receive order information (ordering information) for plate parts 4 consisting of the usage, shape, degree of usable defects, and necessary number of pieces from the parts manufacturer (order receiver), and based on this order information. The assembling calculation for the plate material 2 is performed. Therefore, it is possible to suppress the plate material 2 to be delivered to the component manufacturer (order receiver) to the minimum necessary. Or when the delivery amount of the board | plate material 2 is decided, the assembling calculation result which can obtain the most board components 4 can be provided to a delivery destination.

  Next, a specific method for calculating the assembling of the plate component 4 with respect to the plate material 2 performed by the steel manufacturer system 12 of the steel manufacturer will be described.

  FIG. 3 is a block diagram showing a schematic configuration of the steel maker system 12. The steel manufacturer system 12 includes an order input unit 20 that receives the above-described order information from a component manufacturer via the network 11, a manufacturing system 21 that manufactures a coiled or sheet-like plate material 2, and a manufactured plate material. The inspection system 22 for inspecting the second defect, the combination calculation unit 23, and the like are provided.

  A plate material file 24, an order part memory 25, an available area memory 26, an arrangement calculation memory 27, and a calculation result output unit 28 are connected to the arrangement calculation unit 23. Further, in the combination calculation memory 27, a combination result buffer 27a and a necessary length buffer 27b are formed.

  In the plate material file 24, as shown in FIG. 4, for each plate material 2 manufactured by the manufacturing system 21, a number for specifying the corresponding plate material 2, width (a) × length (b) X The shape indicated by the thickness (t) and defect information are stored. The defect information includes the position of the defect (distance from the tip, position in the width direction), the width (distance in the length direction), and the degree of the defect. In general, the defect is evaluated based on the degree of defect. However, in the present embodiment, for convenience of explanation, the degree of defect is expressed as “A” as an unacceptable degree for all the plate parts 4, and partly. It is assumed that “B” is written to the extent that it can be accepted only for the plate component 4.

  In the order parts file 25, as shown in FIG. 5, the board part number, width (a) × length (b) × thickness (t) in each board part 4 included in the order information received from the parts manufacturer. ), Information on whether or not a defect of the degree “B” that can be allowed only for a part of the plate parts 4 is allowed, and the required number of pieces are written. This pass / fail information may also be written as “Yes if it is about a certain defect”, “No if it is about a certain defect”, or the like.

And the arrangement | positioning calculation part 23 implements the arrangement | positioning calculation process of each board component 4 with respect to the board | plate material 2 according to the flowchart shown in FIG.
When data such as the shape of the manufactured coil-shaped or sheet-shaped plate material 2 is input from the steel making system 21 (Q1), the data such as the shape of the input plate material 2 is newly stored in the plate material file 24. Write to the area (Q2). When defect information designating the number of the plate material 2 is input from the inspection system 22 (Q3), this defect information is written in the defect information of the corresponding number in the plate material file 24 in the area (Q4).

  Next, when the order information of the plate part 4 including the usage, shape, usable defect degree, and necessary number of pieces is inputted from the parts manufacturer via the order input unit 20 (Q5), the input is made. The shape of each plate part 4 included in the order information, the defect availability information, and the necessary number of pieces are written in the new areas of the order part memory 25 with numbers (Q6).

  When the above preparatory steps are completed, “A”, which is large enough to be unusable for all the plate components 4 in the defect information in each plate material 2 stored in the plate material file 24, is indicated. The usable area from which the defect 7 has been removed is determined, and this usable area is written into the usable area memory 26 (Q7).

A procedure for determining the usable area 2a from the plate material 2 including the defect 7 that cannot be used in common will be described with reference to FIG.
FIG. 7A is a diagram showing a plate material 2 including three defects 7 that cannot be used in common. First, as shown in FIG. 7B, the plate material 2 is divided in the vertical direction while avoiding the defect 7, and three usable areas 2a are determined.

  In FIG. 7B, since the area of the unusable region 2b is relatively large, as shown in FIG. 7C, a portion without the upper defect 7 in the two unusable regions 2b is used. As a possible area 2a, a new usable area 2a is formed by connecting to a part of the central usable area 2a.

  Similarly, as shown in FIG. 7 (d), a portion without two defects 7 in the two unusable areas 2b is used as a usable area 2a and connected to a part of the central usable area 2a. Thus, a new usable area 2a is formed.

  As a result, finally, as the usable area 2a, a, b, and c shown in FIG. 7B, d and e shown in FIG. 7C, and f and g shown in FIG. A total of seven usable areas 2 a are determined, and the final five usable areas 2 a are written into the usable area memory 26.

  In Q8 of FIG. 6, the plate parts 4 stored in the order-part memory 25 are combined with each usable area 2a written in the usable area memory 26 by using a search method. As this search method, a conventionally known genetic algorithm method, tabu search method, simulated annuation method, or the like is used.

  In FIGS. 7B and 7C, whether to use b as the usable area 2a or to use d and e as the usable area 2a instead of b takes into consideration the final yield of the plate material 2 and the like. Automatically determined. Similarly, in FIGS. 7C and 7D, whether e is used as the usable area 2a or whether f and g are used as the usable area 2a instead of e depends on the final yield of the plate material 2 and the like. It is automatically determined in consideration.

  When the calculation processing of one assembling for each plate component 4 is completed, the plate component 4 designated as “No” that is not permitted to be included even with the defect 8 having a relatively small scale of “B”, It is determined whether or not the defect 8 of the degree “B” is included (Q9).

  When the board component 4 does not contain any defects, the required length of the board material 2 including all the defects 7 and 8 is calculated (Q10). The previous required length stored in the required length buffer 27b of the arrangement calculation memory 27 is read (Q11) and compared with the required length calculated this time. When the required length calculated this time is shorter than the previous required length (Q12), the match calculation result stored in the match result buffer 27a of the match calculation memory 27 is rewritten to the current match calculation result. Further, the previous required length stored in the required length buffer 27b is rewritten to the required length calculated this time (Q13).

  If there is another combination based on the assembling calculation (Q14), the process returns to Q8, and the plate parts 4 stored in the order receiving part memory 25 are combined using the search method.

  In Q12, if the required length calculated this time is longer than the previous required length, the process proceeds to Q14 without updating the stored content of the arrangement calculation memory 27, and it is determined whether there is another combination by arrangement calculation. .

  Further, in Q9, if the “B” defect is included in the plate part 4 designated “No”, the process proceeds to Q14 without updating the storage contents of the arrangement calculation memory 27, and other combinations by the arrangement calculation are found. Determine if it exists. Then, if there is another combination based on the assortment calculation, the process returns to Q8, and each board part stored in the order part memory 25 is stored using the search method with the combination of the board part 4 and the defect removed. Combine 4

  Then, in Q14, when there is no other combination based on the combination calculation, when the predetermined condition is satisfied, or when the predetermined number of repetitions is calculated, the combination stored in the combination result buffer 27a of the combination calculation memory 27 is stored. The calculation result and the required length stored in the required length buffer 27b are transmitted as final matching calculation results to the parts manufacturer of the ordering party (order receiving party) via the calculation result output unit 28 (Q15).

  In such a plate assembling method, as shown in FIG. 7, a search method is used in each usable area 2 a where the positions of defects that are not usable in common for all applications are removed from the plate material 2. Thus, the assembling calculation of each plate component 4 in which the area of the used plate material 2, that is, the required length of the plate material 2 including the defects 7 and 8 is minimized is performed. Therefore, at this time, the assembled plate parts 4 do not include the defect 7 having the degree of “A” that cannot be used in common. However, depending on the application, there is also a plate component 4 including the defect 8 having a degree of “B” that can be used.

  Therefore, when each of the joined plate parts 4 includes a defect 8 that cannot be used for the purpose of the corresponding plate part 4, the combination of the plate part 4 and the position of the corresponding defect 8 is removed, The assembling calculation of each plate component 4 is performed again using the search method. As a result, in each of the joined plate parts 4, usable defects 8 remain without being removed for the use of the corresponding plate part 4, so that the use efficiency of the plate material 2 is improved. The surplus material is reduced. Conversely, the largest number of plate parts 4 may be obtained for a certain amount of plate material 2.

  A specific effect will be described in comparison between the first method and the second method described above with reference to FIGS. 11 and 12.

  For example, a steel manufacturer does not receive an order for a plate material 2 by specifying a length from a component manufacturer, but receives order information including a plurality of plate parts having different uses, defect availability, shapes, and required numbers via the network 11. Then, based on the information information, the assembling calculation of each plate component 4 is performed using the embodiment method.

  The required length indicated by the result of the assortment calculation by the search method, which is a trial and error, is three plate parts 4a shown in FIG. 12 from the top of the plate material 2, 40 cm away to remove the defect 7, and the plate part 4b. , Three plate parts 4a, and three plate parts 4b. Since the defect 8 does not cause a problem in the plate component 4a, the plate component 4a is arranged at that position.

  As a result, the required length of the plate material 2 is 1540 cm, and the length of waste is 40 cm, which is much shorter than the first and second methods described above. Moreover, no surplus material is generated.

  The arrangement calculation result is transmitted to the component manufacturer via the network 11, and the plate material 2 is cut into each plate component 4 by the cutting device based on the arrangement calculation result.

  As described above, in the board manufacturing method and the board shipping method using the method according to the present embodiment, the position and degree of defects existing in the board material are detected, and only the defects that cannot be allowed in common are detected in advance. The board material is removed and assembled.

  Therefore, the plate material that can compress the surplus material to the minimum can be delivered to an order receiving party that actually cuts the plate material to manufacture each plate part.

  Furthermore, since the purpose of use becomes clear, it becomes possible to manufacture and provide an appropriate steel sheet. When orders of the same specifications are received from a plurality of customers, it is possible to allocate steel plates to each customer so that the overall yield is improved. Customer satisfaction is improved because the optimum cutting position is calculated on behalf of the orderer.

  The present invention is not limited to the embodiment described above. For example, when a steel manufacturer does not receive an order for a plate material 2 from a component manufacturer but directly receives an order for the plate material 2 from an assembly manufacturer, the steel manufacturer receives an order for the plate component 4 having the application, shape and required number from the assembly manufacturer. What is necessary is just to receive information.

  Further, as shown in FIG. 8, when the parts manufacturer system 16 and the assembly manufacturer system 18 are connected by a dedicated line 29, information exchange between the parts manufacturer and the assembly manufacturer is performed using the dedicated line 29. To be implemented.

The schematic diagram which shows schematic structure of the manufacturing and sales system of the board to which the manufacturing method of the board concerning one Embodiment of this invention and the shipping method of a board are applied. Sequence diagram showing the sales operation of each part in the production and sales system Block diagram showing the schematic configuration of the steel manufacturer system in the production and sales system for the same plate The figure which shows the memory contents of the plate material file formed in the steel manufacturer system The figure which shows the memory contents of the order memory which is formed in the same steel manufacturer system Flow chart showing plate assembling calculation operation in the steel manufacturer system Diagram for explaining plate assembling calculation operation in the same steel manufacturer system The schematic diagram which shows schematic structure of the manufacture and sale system of the board to which other embodiment of this invention is applied. Diagram showing the relationship between general steel manufacturers, parts manufacturers and assembly manufacturers The figure which shows the assembling state of each board part to general board material Diagram showing defects present in plate material Diagram showing the shape of each plate component

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Steel manufacturer, 2 ... Plate material, 3 ... Parts manufacturer, 4 ... Board component, 5 ... Assembly manufacturer, 6 ... Product, 7, 8 ... Defect, 11 ... Network, 12 ... Steel manufacturer system, 14 ... Transportation company system , 16 ... parts maker system, 18 ... assembly maker system, 23 ... assortment calculation unit

Claims (5)

A process for producing the steel sheet or strip that has been ordered;
A step of performing a defect inspection on the manufactured steel plate or steel strip; and
From the order parts file storing the shape information of the plate parts that are products obtained by cutting the steel plate or steel strip, and inputting the information to a computer ;
From the plate material file storing the shape of the manufactured steel plate or steel strip, and the defect site information obtained by carrying out the defect inspection , inputting the information to a computer ,
Based on the shape information of the plate component and the shape and defect site information of the steel plate or steel strip, the steel plate or steel strip for obtaining a plate component by avoiding defects that hinder the commercialization of the plate component by computer calculation Performing a plate assembling calculation to determine the cutting position at
And a step of determining a shipping size or a shipping weight of the steel plate or steel strip based on the plate assembling calculation result. The shape information of the plate parts includes information on the shape of each product and the degree of defects that can be tolerated for commercialization, and the defect site information includes information on the defect position and the degree of defects,
In the step of inputting the shape information of the plate part, from the order part file storing the shape information of the plate part, the product shape information and information on the degree of defects that can be tolerated for commercialization are input to a computer ,
In the step of inputting the defect part information, from the plate material file storing the shape and defect part information of the steel plate or steel strip, the shape and defect information are input to a computer ,
In the step of executing the assembling calculation, based on the product shape information, information on the degree of defects that can be allowed for commercialization, the shape and defect information, the steel plate or the steel strip is not acceptable for the assembled product. The board manufacturing method according to claim 1, wherein the computer executes board assembling calculation for determining a cutting position so as to avoid possible defects.   The steel plate or the steel strip manufactured in the manufacturing process in the manufacturing method according to claim 1 or 2 is also attached with the cutting position information obtained from the plate assembling calculation result in the manufacturing method according to claim 1 or 2. Shipment method of board characterized by shipping.   4. The method for shipping a plate with attached cutting position information according to claim 3, wherein the cutting position information is marked on a steel plate or a steel strip itself to be shipped.   The cut position information according to claim 3, wherein the cut position information is attached to the shipped steel plate or steel strip as digital information recorded on a recording medium or digital information communicated via a network. Shipment method of board with position information attached.

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