Production plan creation method and production plan creation device
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-13
Smart Images
Figure JP2025033160_13082026_PF_FP_ABST
Abstract
Description
Production Planning Method and Production Planning Device
[0001] The present disclosure relates to a production planning method and a production planning device for creating a production plan for producing products of a plurality of varieties by a production line.
[0002] In a production line equipped with production equipment such as a mounting device for mounting components on a substrate, while performing setup changes for changing the configuration of the production equipment and variety changes for changing production programs used in the production equipment, products of a plurality of varieties are produced. In the production line, a production plan is created so that products of a plurality of varieties can be produced in a predetermined production quantity by a predetermined production due date. In Patent Document 1, based on the production quantity and production due date for each variety to be produced, information on the production equipment of the production line, the operating time of the production line, and division constraints, each variety is divided into a plurality of production lots, and the plurality of divided production lots are allocated to the operating times of a plurality of production lines to create a production plan. A production planning method is disclosed.
[0003] Japanese Patent Application Laid-Open No. 2020-98509
[0004] By the way, in a production line, a prototype may be made after a setup change or a variety change, and after inspecting the prototype and confirming that there is no problem with the quality, continuous production of the product may be started. However, in the prior art including Patent Document 1, although a production plan for producing a product of a predetermined production quantity within the production due date is created, inspection time and the like due to prototyping are not considered, and there is room for further improvement in creating a production plan including prototyping of the product.
[0005] Therefore, an object of the present disclosure is to provide a production planning method and a production planning device that can appropriately create a production plan for a production line considering prototyping of a product.
[0006] The production plan creation method of the present disclosure is a production plan creation method for creating a production plan for producing multiple types of products using a production line equipped with production facilities, and the production plan is created to produce the specified number of prototypes and to start production of the products after at least the specified inspection time has elapsed, based on: type information including information about the type of product for each lot; production quantity information including information about the number of units of the product to be produced; prototype quantity information including information about the number of prototypes to be made; and inspection time information including information about the inspection time for the inspection of the prototypes.
[0007] The production planning device of the present disclosure is a production planning device that creates a production plan for producing multiple types of products using a production line equipped with production facilities, and includes a production planning unit that creates a production plan to start production of the product after producing the specified number of prototypes and after at least the specified inspection time has elapsed, based on: type information including information about the type of product for each lot; production quantity information including information about the number of units of the product to be produced; prototype quantity information including information about the number of prototypes to be produced; and inspection time information including information about the inspection time for the inspection of the prototypes.
[0008] According to this disclosure, it is possible to appropriately create a production plan for a production line that takes product prototyping into consideration.
[0009] A diagram illustrating the configuration of a component mounting system according to one embodiment of this disclosure. A block diagram showing the configuration of a control device (production plan creation device) according to one embodiment of this disclosure. A diagram illustrating an example of lot information used in a control device (production plan creation device) according to one embodiment of this disclosure. A diagram illustrating an example of setup information used in a control device (production plan creation device) according to one embodiment of this disclosure. A flowchart of a production plan creation method according to one embodiment of this disclosure. A diagram illustrating a provisional plan created by the production plan creation method according to one embodiment of this disclosure. A diagram illustrating a provisional plan created by the production plan creation method according to one embodiment of this disclosure. A diagram illustrating a production plan created by the production plan creation method according to one embodiment of this disclosure.
[0010] An embodiment of this disclosure will be described in detail below with reference to the drawings. The configurations, shapes, etc. described below are illustrative examples for illustrative purposes and can be modified as appropriate according to the specifications of the component mounting system, production line, printing device, mounting device, reflow device, management device (production planning device), etc. In the following, all corresponding elements are denoted by the same reference numerals in all drawings, and redundant explanations are omitted.
[0011] First, with reference to Figure 1, the configuration of the component mounting system 1 will be explained. The component mounting system 1 is configured such that the production line L is managed by a control device 3 connected by a wired or wireless communication network 2.
[0012] Production line L is configured by connecting production equipment such as a printing machine M1, mounting machines M2 to M4, and a reflow machine M5 in series from upstream (left side of the page) to downstream (right side of the page) in the direction of substrate transport. Production line L has multiple production machines and has the function of producing mounted substrates (products) by sequentially passing substrates between the production machines. Production line L is a group of production machines connected via a communication network 2, and the production machines do not need to be physically connected to each other.
[0013] In Figure 1, the printing apparatus M1 transports the substrate by a conveyor belt and deposits (prints) paste-like solder onto the substrate via a screen mask mounted on the printing work section. The mounting apparatuses M2 to M4 transport the substrate by a conveyor belt, pick up components supplied by component supply devices such as tape feeders and tray feeders using nozzles mounted on the mounting heads, and mount the components onto the substrate on which the solder has been deposited (printed). Note that the production line L is not limited to a configuration of three mounting apparatuses M2 to M4, but may consist of one, two, or four or more mounting apparatuses M2 to M4. The reflow apparatus M5 transports the substrate by a conveyor belt, heats the substrate with the components mounted on it using a substrate heating section, melts and hardens the solder on the substrate, and joins the electrode portion of the substrate to the components.
[0014] The control device 3 has the function of creating data and parameters necessary for the operation of the production equipment on the production line L and transmitting them to each piece of production equipment. In addition, the control device 3 also functions as a production planning device that creates a production plan for producing multiple types of mounted circuit boards (products) using the production line L equipped with the production equipment.
[0015] In Figure 1, when switching the type of mounted circuit board (product) produced by the production line L, setup changes are performed, including replacing the screen mask of the printing device M1, changing the nozzles of the mounting devices M2 to M4 and the arrangement of components supplied by the component supply device (hereinafter simply referred to as "component arrangement"), and changing the width of the transport conveyors for the printing device M1, mounting devices M2 to M4, and reflow device M5. In addition, a type changeover operation is performed, which involves changing the production programs and production parameters of the printing device M1, mounting devices M2 to M4, and reflow device.
[0016] Next, with reference to Figure 2, the configuration of the control device 3 will be described. Here, we will focus on the function of the control device 3 as a production planning device, which creates a production plan for producing prototypes on the production line L, inspecting the prototypes, and then continuously producing the finished products after inspection. The control device 3 comprises a processing unit 10, a storage unit 12, an input unit 16, a display unit 17, and a communication unit 18.
[0017] The input unit 16 is an input device such as a keyboard, touch panel, or mouse, and is used when entering operation commands or data. The display unit 17 is a display device such as a liquid crystal panel, which displays various data stored in the storage unit 12, as well as various information such as operation screens and input screens for operations performed by the input unit 16. The communication unit 18 is a communication interface that transmits and receives data between the communication network 2 and the production equipment (printing machine M1, mounting machines M2 to M4, reflow machine M5, etc.) that make up the production line L.
[0018] In Figure 2, the processing unit 10 is an arithmetic unit such as a CPU. The processing unit 10 includes a production plan creation unit 11 as an internal processing unit. The internal processing unit may be composed of independent hardware assets or of a common CPU and programs for each information processing. The storage unit 12 is a storage device that stores various types of information. The storage unit 12 is implemented by, for example, flash memory or HDD (Hard Disk Drive). The storage unit 12 stores information such as lot information 13, setup information 14, and production plan 15.
[0019] Furthermore, the management device 3 does not need to be composed of a single computer, but may be composed of multiple devices. In addition, all or part of the functions of the processing unit 10 and the storage unit 12 may be configured in the cloud.
[0020] In Figures 2 and 3, the lot information 13 stores various information for producing mounted circuit boards (products) on the production line L, for each lot. Specifically, the lot information 13 stores product type information 13a, production quantity information 13b, production time information 13c, prototype quantity information 13d, inspection time information 13e, production start date information 13f, and production delivery date information 13g. Product type information 13a includes information about the product type 21 of mounted circuit boards to be produced on the production line L. Production quantity information 13b includes information about the production quantity 22 of mounted circuit boards (products) to be produced in that lot. Production time information 13c includes the production time 23 per mounted circuit board.
[0021] The prototype quantity information 13d includes information regarding the number of prototypes 24 produced. The inspection time information 13e includes information regarding the inspection time 25 per prototype. Prototype inspection is the process of confirming that the quality of the mounted circuit boards produced with the current configuration of production line L meets predetermined conditions, and includes visual inspection of the components mounted on the prototype circuit boards (prototypes), and electrical inspection of the circuit boards. The production start date information 13f includes information regarding the production start date 26 on which production line L can begin producing the circuit boards of that lot. The production deadline information 13g includes information regarding the production deadline 27 on which production line L should complete production of the circuit boards of that lot.
[0022] Referring to Figure 3, an example of lot information 13 will be explained. Lot information 13 includes lot ID 20, product type 21, production quantity 22, production time 23, prototype quantity 24, inspection time 25, production start date 26, and production delivery date 27. Lot ID 20 is information that identifies the lot of the mounted circuit board produced on production line L. In this example, lot information 13 includes information for five lots with lot ID 20 from "1" to "5". Hereafter, the lot with lot ID 20 "1" will simply be referred to as "lot Q1", etc.
[0023] The type 21 of the mounted circuit boards for lots Q1 and Q2 is "A", the type 21 of the mounted circuit boards for lots Q3 and Q4 is "B", and the type 21 of the mounted circuit boards for lot Q5 is "C". Hereafter, the type 21 of which is "A" will be simply referred to as "Type A". The production quantity 22 is "100 pieces" for all lots Q1 to Q5. The production time 23 is "36 seconds / piece" for all lots Q1 to Q5. The number of prototypes 24 is "1 piece" for all lots Q1 to Q5. The inspection time 25 is "1 hour / piece" for all lots. The production start date 26 is "February 3rd" for all lots Q1 to Q5. The production lead time 27 is "February 4th" for all lots Q1 to Q5.
[0024] In Figures 2 and 4, the setup information 14 stores various information related to setup changes for each lot, regarding the change of product type 21 of the mounted circuit boards (products) produced on the production line L. Specifically, the setup information 14 stores setup group information 14a, setup time information 14b, changeover time information 14c, etc. Setup group information 14a includes information on setup ID 28 that identifies the lot ID 20 of a setup group that can be produced by product changeover work alone without performing setup changeover work. Setup time information 14b includes information on the setup time 29 required for setup changeover work to produce the lot in question. Changeover time information 14c includes information on the changeover time 30 required for product changeover work to produce the lot in question.
[0025] Referring to Figure 4, an example of setup information 14 will be explained. Setup information 14 includes lot ID 20, product type 21, setup ID 28, setup time 29, and changeover time 30. Setup ID 28 is information that identifies the setup group. In this example, lot Q1 (product type A), lot Q2 (product type A), and lot Q3 (product type B) have a setup ID 28 of "1", lot Q4 (product type B) has a setup ID 28 of "2", and lot Q5 (product type C) has a setup ID 28 of "3". Hereafter, a setup group with a setup ID 28 of "1" will simply be referred to as "setup group R1", etc. For lots with the same setup group, the mounted circuit boards (products) are produced with the same configuration of the production line L, including the screen mask of the printing device M1 and the component placement of the mounting devices M2 to M4. The setup time 29 is "30 minutes" for all lots Q1 to Q5. The switchover time of 30 is "10 minutes" for all lots Q1 to Q5.
[0026] Thus, the setup information 14 includes information on setup groups R1 to R3 for multiple product types A to D, and is set for each lot Q1 to Q5. Note that even for lots of the same product type 21, if the component placement of mounting devices M2 to M4 is different, or if the component assignments for mounting devices M2 to M4 on the substrate are different, the setup information 14 will be set as different setup groups R1 to R3. In the example in Figure 4, lots Q3 and Q4 are mounting substrates of the same product type B, but the setup information 14 is set as setup group R1 for lot Q3 and as setup group R2 for lot Q4.
[0027] In Figure 2, the production plan creation unit 11 creates a production plan 15 based on lot information 13 and setup information 14, which efficiently executes the prototyping of multiple types 21 mounted circuit boards (products), inspection of the prototypes, and continuous production of the inspected mounted circuit boards, and stores it in the storage unit 12. The created production plan 15 is displayed on the display unit 17 or the like.
[0028] Next, following the flow chart in Figure 5 and referring to Figures 6 to 8, we will explain a method for creating a production plan 15 for producing multiple types 21 mounted circuit boards (products) using a production line L equipped with production facilities. Here, we will explain an example in which the production plan creation unit 11 of the control device 3 (production plan creation device) creates the production plan 15 based on the lot information 13 shown in Figure 3 and the setup information 14 shown in Figure 4.
[0029] In Figure 5, first, the production planning unit 11 arranges multiple lots Q1 to Q5 in the order in which they will be produced, taking into account the production start date 26 and production due date 27 included in the lot information 13, and the setup ID 28 included in the setup information 14. Specifically, the production planning unit 11 extracts multiple lots Q1 to Q5 to be produced in a predetermined period (for example, one day) from the lot information 13, and rearranges them so that lots Q1 to Q5 with the same setup ID 28, that is, lots Q1 to Q5 of the same setup group R1 to R3, are produced consecutively.
[0030] Next, the production planning unit 11 calculates the total production time for each lot of mounted boards based on the number of boards produced 22 and production time 23 included in the lot information 13. Specifically, the production planning unit 11 calculates the total production time by multiplying the production time 23 by the number of boards produced 22. Next, the production planning unit 11 creates a provisional plan (1) by adding setup change operations with setup time 29 at the locations where setup groups R1 to R3 are changed, and adding product change operations with change time 30 at the locations where product type 21 is changed within the same setup group R1 to R3 (ST1: provisional plan creation process).
[0031] Referring to Figure 6, an example of a provisional plan (1) created by the production planning unit 11 will be explained. In this example, production is in the order of lot Q1, lot Q2, lot Q3, lot Q4, and lot Q5. Additionally, setup changeover work is added before the production of the first lot Q1 in setup group R1, before the production of the first lot Q4 in setup group R2, and before the production of the first lot Q5 in setup group R3. Furthermore, a product changeover work is added between lot Q2 and lot Q3, where product A is switched to product B within setup group R1. Note that since lot Q1 and lot Q2 are in the same setup group R1 with the same setup ID 28 and product 21 is also the same product A, no product changeover work is added.
[0032] In Figure 5, the production planning unit 11 then decides whether or not to produce a prototype before the continuous production of the mounted circuit boards of lots Q1 to Q5, taking into account the setup change operations and product change operations set in the provisional plan (1) (ST2: prototype decision process).
[0033] Now, referring to Figure 6, the production planning unit 11's determination of whether or not prototyping is necessary will be explained. For lots Q1, Q4, and Q5, a setup change operation is scheduled immediately before, so the production planning unit 11 determines that prototyping is necessary. For lot Q3, a product change operation is scheduled immediately before, so the production planning unit 11 determines that prototyping is necessary. For lot Q2, the setup ID 28 and product 21 are the same as the preceding lot Q1, so the production planning unit 11 determines that prototyping is unnecessary.
[0034] In Figure 5, the production planning unit 11 then creates a provisional plan (2) by adding prototyping and inspection to provisional plan (1) based on the result of the determination of whether prototyping is necessary, the production time 23 of the lot information 13, the number of prototypes 24, and the inspection time 25 (ST3: Prototyping and inspection addition process). Specifically, the production planning unit 11 calculates the total prototyping time for the prototypes by multiplying the production time 23 by the number of prototypes 24. The production planning unit 11 also calculates the total inspection time for the prototypes by multiplying the inspection time 25 by the number of prototypes 24.
[0035] Referring to Figure 7, an example of a provisional plan (2) created by the production planning unit 11 will be explained. In provisional plan (2), after the setup changes for each of lots Q1, Q4, and Q5, prototype production for the total prototype time and inspection for the total inspection time are added. Also, after the product changeover for lot Q3, prototype production for the total prototype time and inspection for the total inspection time are added. In other words, the production planning unit 11 creates a production plan 15 such that prototype production for 24 units is carried out, and continuous production of the product begins after at least 25 inspection times (total inspection time) have elapsed.
[0036] In this example, assuming that prototypes will also be treated as products after inspection, the production planning unit 11 recalculates the total production time by subtracting the number of prototypes 24 from the number of production units 22. For example, in lot Q1, the total production time is recalculated by multiplying the production time 23 (36 seconds / unit) by the 99 units obtained by subtracting the number of prototypes 24 (1 unit) from the number of production units 22 (100 units). In other words, after the inspection of the prototypes, the production planning unit 11 creates a production plan 15 to produce the number of products obtained by subtracting the number of prototypes 24 from the number of production units 22. Note that if the prototypes are not treated as products, the total production time is not recalculated.
[0037] In Figure 5, the production plan creation unit 11 then swaps the order of continuous production of the previous lot of mounted circuit boards (products) and the prototyping of the later lot, which is scheduled to be produced after the previous lot, in the provisional plan (2) to create a production plan 15 that allows the start of production of the later lot to be brought forward (ST4: Prototyping order swapping process). The production plan creation unit 11 stores the production plan 15 created by the prototyping order swapping process (ST4) in the storage unit 12.
[0038] Referring to Figure 8, an example of a production plan 15 created by the production plan creation unit 11 will be explained. In this example, the order of prototyping lot Q3, which is in the same setup group R1 as lot Q1, and the continuous production of lot Q1 and lot Q2 are swapped. More specifically, after prototyping lot Q1, the production plan creation unit 11 adds a product changeover operation to switch the configuration of production line L from product A of lot Q1 to product B of lot Q3, in parallel with the inspection of the lot Q1 prototype, thereby bringing forward the prototyping of lot Q3. Furthermore, after prototyping lot Q3, the production plan creation unit 11 adds a product changeover operation to switch the configuration of production line L back from product B of lot Q3 to product A of lot Q1.
[0039] The production planning unit 11 then creates a production plan 15 so that continuous production of lot Q1 begins after the inspection of the prototype of lot Q1. The production planning unit 11 also creates a production plan 15 so that the inspection of the prototype of lot Q3 begins after the inspection of the prototype of lot Q1. As a result, the inspection of the prototype of lot Q3 is completed at the same time that continuous production of lot Q2 is finished. Therefore, the start of continuous production of lot Q3 can be made earlier than in the provisional plan (2). In this way, by changing the order of continuous production of lot Q1 and lot Q2 and the prototype of lot Q3, the time required for production of mounted boards of lots Q1 to Q5 in production plan 15 is shorter than in the provisional plan (2).
[0040] In this way, the production planning unit 11 creates a production plan 15 based on the setup information 14, which involves creating a prototype of the first product (product A from lot Q1), then creating a prototype of the second product (product B from lot Q3) which is the same as the first product and is produced by the same setup group R1, and then starting continuous production of the first product.
[0041] In Figure 8, the subsequent lot Q2 is in the same setup group R1 as the preceding lot Q1, and is the same product type A, so no prototype production for lot Q2 is added to the production plan 15. In other words, if a prototype was inspected in the previous lot (lot Q1), the production plan creation unit 11 creates a production plan 15 so that no prototype is produced for the subsequent lot (lot Q2) of the same product type 21 (product type A) as the previous lot, which will begin production after the previous lot.
[0042] Also, although the previous lot Q3 and the subsequent lot Q4 are of the same product type B, since the setup groups are different, a trial production of lot Q4 is added to the production plan 15. That is, when the subsequent lot (lot Q4) of the same product type 21 (product type B) as the previous lot (lot Q3) for which continuous production starts after the previous lot is set in a setup group R2 different from the previous lot, the production planning unit 11 creates the production plan 15 such that the subsequent lot produces trial products with a trial production quantity of 24 and starts continuous production of the product after at least the inspection time 25 (total inspection time) has elapsed. [[ID=**4]]
[0043] In addition, when the production planning unit 11 cannot shorten the time required for producing the mounting substrates of lots Q1 to Q5 even if it swaps the continuous production of the previous lot and the trial production of the subsequent lot from the provisional plan (2), the production planning unit 11 stores the provisional plan (2) in the storage unit 12 as the production plan 15. That is, the production planning unit 11 creates the production plan 15 to produce trial products with a trial production quantity of 24 based on the product type information 13a including information on the product type 21 for each of lots Q1 to Q5, the production quantity information 13b including information on the production quantity 22 of the product, the trial production quantity information 13d including information on the trial production quantity 24 of the trial products, and the inspection time information 13e including information on the inspection time 25 for inspecting the trial products, and starts continuous production of the product after at least the inspection time 25 has elapsed.
[0044] In the above description, an example of creating a production plan 15 for producing a product on a production line L equipped with production equipment has been described using the example of producing a mounting substrate (product) on a production line L equipped with production equipment such as mounting devices M2 to M4. However, the invention of the present disclosure is also applicable to others. For example, it is also applicable to a production plan 15 for producing household appliances on a production line L equipped with an assembly device or a production plan 15 for producing food processing products on a production line L equipped with a food processing device.
[0045] As described above, the following technical ideas are disclosed in the present disclosure.
[0046] (Technology 1) A production plan creation method for creating a production plan 15 to produce products (mounted substrates) of a plurality of varieties A to C by a production line L equipped with production equipment, based on variety information 13a including information on variety 21 for each lot Q1 to Q5, production quantity information 13b including information on the production quantity 22 of the product, prototype quantity information 13d including information on the prototype quantity 24 of the prototype, and inspection time information 13e including information on the inspection time 25 of the inspection of the prototype. The method creates the prototype of the prototype with the prototype quantity 24 and creates the production plan 15 so as to start the production of the product after at least the inspection time 25 has elapsed.
[0047] As a result, the production plan 15 of the production line L considering the prototype production of the product can be appropriately created.
[0048] (Technology 2) Further, based on setup information 14 including information on setup groups R1 to R3 for a plurality of varieties A to C, the prototype of the first variety (variety A of lot Q1) is prototyped, and after prototyping the prototype of the second variety (variety B of lot Q3) where the first variety and the setup groups R1 to R3 are the same, the production plan 15 is created so as to start the production of the product of the first variety. The production plan creation method described in Technology 1.
[0049] As a result, the production plan 15 of the production line L considering the prototype production of products with different varieties A to C in the same setup groups R1 to R3 can be appropriately created.
[0050] (Technology 3) The setup groups R1 to R3 are set for each of the lots Q1 to Q5. When production starts after the previous lot (lot Q3) and the subsequent lot (lot Q4) of the same variety B as the previous lot is set in a different setup group R2 from the previous lot, the subsequent lot creates the prototype of the prototype with the prototype quantity 24 and creates the production plan 15 so as to start the production of the product after at least the inspection time 25 has elapsed. The production plan creation method described in Technology 2.
[0051] As a result, the production plan 15 of the production line L considering the prototype production of products with different setup groups R1 to R3 for the same variety B can be appropriately created.
[0052] (Technology 4) If the prototype was inspected in the previous lot (lot Q1), the production plan 15 is created so that the next lot (lot Q2) of the same variety A as the previous lot, which is produced after the previous lot, does not produce a prototype, as described in any of Techniques 1 to 3.
[0053] This makes it possible to appropriately create a production plan 15 for production line L that takes into account the prototyping of products of the same variety A.
[0054] (Technology 5) After inspecting the prototype, a production plan 15 is created to produce a number of products equal to the production quantity 22 minus the number of prototypes 24, as described in any of Techniques 1 to 4.
[0055] This makes it possible to appropriately create a production plan 15 for production line L that takes into account product prototypes, where prototypes after inspection are also treated as finished products.
[0056] (Technology 6) A method for creating a production plan according to any one of Technologies 1 to 5, wherein the production equipment is at least one of a printing device M1 for depositing solder onto a substrate, mounting devices M2 to M4 for mounting components onto a solder-deposited substrate, and a reflow device M5 for heating a substrate with components mounted to melt the solder.
[0057] This makes it possible to appropriately create a production plan 15 for the production line L that takes into account the prototyping of mounting boards on which components are mounted.
[0058] (Technical 7) A production planning device (management device 3) that creates a production plan 15 for producing multiple types of products A to C using a production line L equipped with production facilities, comprising a production planning unit 11 that creates a production plan 15 so as to produce 24 prototypes and start production of the products after at least 25 inspection times have elapsed, based on type information 13a including information on type 21 for each lot Q1 to Q5, production quantity information 13b including information on the number of units to be produced 22 for each product, prototype quantity information 13d including information on the number of prototypes to be produced 24 for each prototype, and inspection time information 13e including information on the inspection time 25 for the inspection of the prototypes.
[0059] This makes it possible to appropriately create a production plan 15 for production line L that takes product prototyping into consideration.
[0060] The production plan creation method and production plan creation apparatus disclosed herein have the effect of being able to appropriately create a production plan for a production line that takes product prototyping into consideration, and are useful in the field of mounting components onto substrates.
[0061] 3. Management device (production plan creation device) 21, A, B, C Product type L Production line M1 Printing device M2-M4 Assembly device M5 Reflow device Q1-Q5 Lot R1-R3 Setup group
Claims
1. A method for creating a production plan to produce multiple types of products using a production line equipped with production facilities, the method comprising: type information including information about the type of product for each lot; production quantity information including information about the number of units of the product to be produced; prototype quantity information including information about the number of prototypes to be made; and inspection time information including information about the inspection time for the inspection of the prototypes, wherein the method creates a production plan to start production of the product after the number of prototypes to be made and at least the inspection time has elapsed.
2. The production plan creation method according to claim 1, further comprising creating a production plan such that, based on setup information including information regarding setup groups of multiple varieties, a prototype of the first variety is produced, a prototype of the second variety is produced for the same setup group as the first variety, and then production of the first variety is started.
3. The production planning method according to claim 2, wherein the setup group is set for each lot, and if a subsequent lot of the same product as the previous lot, which is to be produced after the previous lot, is set to a different setup group from the previous lot, the production plan for the subsequent lot is set to produce the specified number of prototypes and to start production of the product after at least the inspection time has elapsed.
4. If the inspection of the prototype was performed in the previous lot, the production plan is created so that the prototype is not produced in subsequent lots of the same variety as the previous lot, which begin production after the previous lot. This is the production plan creation method according to claim 1.
5. The production plan creation method according to claim 1, wherein, after the inspection of the prototype, the production plan is created to produce the number of products obtained by subtracting the number of prototypes from the total production quantity.
6. The production planning method according to any one of claims 1 to 5, wherein the production equipment is at least one of a printing apparatus for depositing solder onto a substrate, a mounting apparatus for mounting components onto the substrate on which the solder has been deposited, and a reflow apparatus for heating the substrate on which the components have been mounted to melt the solder.
7. A production planning device for creating a production plan for producing multiple types of products using a production line equipped with production facilities, comprising: a production planning unit that creates a production plan to produce the specified number of prototypes and to start production of the products after at least the specified inspection time has elapsed, based on: type information including information about the type of product for each lot; production quantity information including information about the number of units of the product to be produced; prototype quantity information including information about the number of prototypes to be made; and inspection time information including information about the inspection time for the inspection of the prototypes.