JP2022162314A - Component traceability control system and control method of the same - Google Patents

Abstract

To clearly discriminate the assembly period sections for the respective production lots of components to be continuously assembled so as to enable quick and highly accurate investigation of the cause of the product defect.SOLUTION: A component traceability control system that controls production lot identification information on components includes: a product identification information acquisition unit that receives product identification information; a component information receiving unit that calculates an assembly flag of a component constituting a product, using the product identification information and model information for each production identification information; a component box storage information acquisition unit that acquires production lot identification information for each component box; a residual quantity detection unit that detects component box information and the number of usable components to be assembled to the products, or the number of defective components not to be assembled to the products; a residual quantity acceptance unit that calculates a residual quantity threshold flag using the number of usable components and the number of defective components in the event that the residual quantity of components becomes equal to or smaller than a threshold; and a production lot identification information calculation unit that calculates a residual quantity of components which is observed when the component is assembled to the products on the basis of the assembly flag and the residual quantity threshold flag.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a traceability system, and more particularly to techniques for defect cause analysis and quality control of products.

Manufacturing lines, especially in the automotive industry, produce new vehicles every minute. On the other hand, if a defect (including a recall) is found after the manufactured product has been put on the market, we will investigate the cause, identify the part that is the cause, such as a component, and determine the impact of that component on other manufactured products. The scope is being investigated based on the traceability system.

Some parts are linked to the manufactured product on a one-to-one basis, but many of the parts that are managed by lot (for example, by packing unit) are based on the usage time of each lot and the manufacturing process of the manufactured product to which they are attached. The mainstream method is to match the passage time and link it. It is difficult to improve the accuracy of linking parts handled during minute-by-minute work during assembly of manufactured products and manufactured products to which they are assembled, or because there are no records of linking, investigations are prolonged and the scope of factors is not specified. In some cases, it cannot be narrowed down in a short period of time, and the increase in research costs and time has become a problem for companies.

Japanese Unexamined Patent Application Publication No. 2006-65841 (Patent Document 1) is cited as a prior art related to the above quality control. In Patent Document 1, based on the manufacturing start time and manufacturing end time of the manufactured product and the supply start time and supply stop time of the component, manufacturing lot identification information of a component that can be used in the manufactured product is extracted. A component traceability management device is disclosed that records component identification information and component names in association with each other.

JP-A-2006-65841

According to Patent Literature 1, manufacturing lot identification information (hereinafter sometimes abbreviated as "manufacturing lot") is extracted based on the time regarding the supply of components. However, at a time around the timing when the manufacturing lot of a component is switched, there is a possibility that the component was attached to the manufacturing lot before or after the switching timing, and the component attached to the manufactured product may It is difficult to specify the production lot, and we have no choice but to deal with a plurality of production lots. As a result, uncertainties arise in the management of production lots, and there remains the problem that it is difficult to further improve component traceability efficiency.

In view of the above problems, the object of the present invention is to clarify the assembly section for each production lot of parts that are used continuously to the manufactured product, and to find the cause of defects in the manufactured product early and with high accuracy. It is to be.

To give an example, the present invention is a parts traceability management device for managing production lot identification information of parts constituting a product in a process of manufacturing a product, wherein the product identification information of the product is A product identification information acquisition unit that receives product identification information, a component information reception unit that calculates assembly flags for components that make up a product from the product identification information and model information for each product identification information, and a manufacturing component for each component box A component box storage information acquisition unit that acquires lot identification information, a remaining amount detection unit that detects the component box information and the quantity of used components or defective components that are not included in the manufactured products of components, and used components and a remaining amount reception unit that calculates a remaining amount threshold flag when the remaining amount of parts becomes less than the threshold from the quantity of defective parts, and parts to the manufactured product based on the assembly flag and the remaining amount threshold flag A production lot identification information calculation unit for calculating the remaining amount of parts at the time of assembly is provided.

Advantageous Effects of Invention According to the present invention, it is possible to clarify the assembly section for each production lot of a member that is used continuously, and to improve the accuracy of the traceability technology of the production line.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining the application scene of the component traceability management apparatus in an Example. 1 is a functional configuration diagram of a component traceability management device in an embodiment; FIG. It is a figure explaining stringing of the manufacturing lot identification information of a component, and product identification information in a prior art and an Example. 4 is a processing flow of component assembly work performed for each process in the embodiment. It is acquisition information at the time of passage of the product to be acquired by the product identification information acquisition unit in the embodiment. It is an example of data of the product model information DB in the embodiment. It is an example of the data of the component structure information DB classified by model in an Example. It is a processing table for updating the component assembly flag of the component information receiving unit in the embodiment. It is an example of data before the information stored in the component box storage information DB in the embodiment is updated. It is an example of data after the information stored in the component box storage information DB in the embodiment is updated. It is a processing flow of the remaining amount detection unit in the embodiment. It is an example of data which shows the acquisition information of the remaining amount detection part in an Example. FIG. 10C is an image diagram of a work scene when the remaining amount detection unit shown in FIG. 10B detects a defective product. FIG. 10 is an image diagram of a work scene at the time of remaining amount detection when the same parts are stored in a plurality of parts boxes on the parts shelf in the embodiment. FIG. 12B is an example of data showing information acquired by the remaining amount detection unit when detecting the remaining amount shown in FIG. 12A; FIG. 4 is a processing table before processing for calculating a remaining amount threshold flag of the remaining amount receiving unit in the embodiment; It is a processing table after the processing of calculating the remaining amount threshold flag of the remaining amount reception unit in the embodiment. It is a figure explaining the remaining amount calculation method at the time of component parts vehicle assembly performed by the manufacturing lot identification information calculation part in an Example. It is an example of the data of attachment component performance DB in an Example. It is an example of a screen when component identification information and manufacturing lot identification information on the manufacturing lot search screen in the embodiment are designated as search conditions. It is an example of a screen when product identification information and work time on the vehicle search screen in the embodiment are designated as search conditions.

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

FIG. 1 is a schematic diagram for explaining an application scene of a parts traceability management device 10 in this embodiment. The parts traceability management device 10 in the present embodiment is a device that can link the manufacturing lot identification information of the assembled parts for each product identification information when assembling the parts to the product 80 . Here, the manufactured product identification information is information for identifying each manufactured product possessed by each manufactured product. Further, the production lot identification information of a component is information for identifying a lot of the component, where the unit of delivery of the component to the manufacturer is set as a lot.

In FIG. 1, a storage lot 21 is a lot stored in a component box 23, and the storage lot 21 is transferred to the component box 23 stored in the component shelf 24 of each process. The component box identification information, the manufacturing lot identification information of the components to be stored, and the component storage time are linked. Here, the component box identification information is information for identifying each component box 23 in which the component 22 is stored. Also, it is assumed that the component box identification information is issued independently. The component box identification information and the manufacturing lot identification information are acquired by the code information reading medium 11. FIG. In FIG. 1, it is assumed that the component box identification information and the manufacturing lot identification information are bar codes, and the code information reading medium 11 is a bar code reader or the like. Other means may be used as long as they can be linked.

Moreover, since there is a possibility that defective products are mixed in the component products 22, each process has a component product shelf 24 and a defective product shelf 25.例文帳に追加A worker takes out the component 22 from the component box 23 stored in the component shelf 24 and assembles it into the product 80 on the production line. When it turns out that the member picked up is defective, the member is stored in the defective shelf 25. - 特許庁

In the parts storage area, the remaining amount detection medium 12 is fixed and installed at a place where the parts storage operation to the defective product shelf 25 can be monitored, and obtains the parts box identification information and the information on the usage record of the parts. In other words, assuming that the remaining amount detection medium 12 is a camera, the component box identification information is acquired from the image acquired by the camera, and the use of the component is detected by the AI posture extraction processing means provided in the component traceability management device 10. performance can be judged. However, if it is possible to acquire the component box identification information and the information on the usage record of the component, for example, the remaining amount detection medium 12 is a weighing scale, the weight of the component box is measured by the weighing scale, and the component Other means such as calculating the usage history of the parts in the traceability management device 10 may be used.

In the production line, the product identification information of the product 80 can be acquired by the product identification information acquisition medium 13 for each process. Note that the product identification information acquisition medium 13 is, for example, an RFID reader. In addition, it is assumed that an RFID or the like in which product identification information is already written is mounted on the manufactured product before it is introduced into the production line, and can be read online by an RFID reader in the process. Other means may be used as long as the RFID can store product identification information and can be read in the process.

The information in which the parts to be assembled are registered in the database (DB) for each product identification information by the parts traceability management device 10 can be output on the screen by the screen display unit 14 .

FIG. 2 is a functional configuration diagram of the parts traceability management device 10 in this embodiment. 2, the component traceability management device 10 includes a manufactured product identification information acquisition unit 31, a component information reception unit 32, a component box storage information acquisition unit 33, a component box storage information accumulation unit 34, a residual Quantity detection unit 35, remaining amount reception unit 36, manufacturing lot identification information calculation unit 37, database storage unit 38, manufactured product type information DB 41, type-specific component configuration information DB 42, and component box storage information DB 43 , and an attachment part record DB 44 . The communication network 50 is, for example, a LAN. Here, the model information is information on the model of the manufactured product, which is held for each manufactured product.

Further, the screen display unit 14 may display various information by the component traceability management device 10 via the communication network 50, or may be provided inside the component traceability management device 10 to display various information. good.

Although not shown, the code information reading medium 11, the remaining amount detection medium 12, and the product identification information acquisition medium 13 communicate with the parts traceability management device 10 via the communication network 50, and perform parts traceability. The management device 10 acquires information by receiving necessary information.

The component traceability management device 10, as its hardware image, is composed of a processor such as a general CPU (Central Processing Unit) and a storage device, and the functions shown in FIG. 2 are implemented by the storage device. It is executed by reading out a program or information to perform a predetermined process by software processing.

If the communication network 50 guarantees a certain communication speed that enables online processing, the parts traceability management device 10 may be remotely arranged as a server device, for example. In addition, it is also possible to store the installation part record DB 44 not by online processing but by batch processing. In addition, the communication network 50 is a general public line network regardless of whether it is wired or wireless. can be used.

The product identification information acquisition unit 31 acquires product identification information of products passing through the production line from the product identification information acquisition medium 13 installed for each process.

The product model information DB 41 is a DB in which the model for each product identification information is stored. One exists as a master regardless of the process.

The model-by-model parts configuration information DB 42 is a DB in which parts to be assembled, the number of parts, and assembly process information are stored for each model. One exists as a master regardless of the process.

The component information reception unit 32 extracts the model from the manufactured product model information DB 41 based on the manufactured product identification information, extracts the component configuration information necessary for each process from the component component configuration information DB 42 by model, and extracts the component configuration information necessary for each process. The necessity of assembling each member to the manufactured product in , is calculated as an assembling flag.

The component box storage information acquisition unit 33 acquires the component box identification information and the manufacturing lot identification information to be stored from the code information reading medium 11, and links the component box and the manufacturing lot identification information.

The component box storage information accumulation unit 34 stores the component box identification information and the manufacturing lot identification information in the component box storage information DB 43 online when the lot is stored in the component box. There is one component box storage information DB 43 as a master regardless of the process.

The remaining amount detection unit 35 acquires the component box identification information and the usage history information of the component through the remaining amount detection medium 12 installed for each process. Here, the usage record information of the parts includes from which parts box the parts were taken out, whether the taken out parts were incorporated into the manufactured product as used parts, and whether the taken out parts were defective parts. As a result, it is a track record of whether it was put on the defective product shelf without being incorporated into the manufactured product. The remaining amount detection unit 35 detects the number of used members or defective members that are not incorporated.

The remaining amount reception unit 36 determines that the remaining amount of each component stored in each component box falls below the threshold based on the component box storage information DB 43 and the component box information and component usage record information of the remaining amount detection unit 35. If so, the remaining amount threshold flag is calculated. It is assumed that the remaining amount threshold for flag calculation is determined in advance for each component.

The production lot identification information calculation unit 37 calculates the remaining amount of parts when the parts are assembled to the product from the assembly flag information of the parts information reception part 32 and the remaining amount threshold flag of the remaining amount reception part 36 . Note that the manufacturing lot identification information calculation unit 37 may calculate the switching point of the manufacturing lot identification information of the parts based on the remaining amount, or the user may set the switching point when the remaining amount changes from 1 to 0. You can judge.

The database accumulation unit 38 stores the information of the manufacturing lot identification information calculation unit 37 in the installation component performance DB 44 .

The assembly component record DB 44 stores component assembly information for each manufactured product identification information accumulated in the database accumulation unit 38 . One exists as a master regardless of the process.

FIG. 3 is a diagram for explaining the linking of manufacturing lot identification information of components and product identification information in Patent Document 1, which is a conventional technique, and the present embodiment.

In FIG. 3, in the automobile industry, product identification information is VIN. For example, in step 60, VIN001 to VIN010 indicated by I and component X000001 of production lots (identification information) A001 and A002 are linked to a vehicle. Suppose.

In the prior art, the opening time of production lots A001 and A002 of component X000001 and the process passing time T of the manufactured product are collated to ensure that the production lot A001 is used and the production lot A002 is used. Separate the time period and the time when the production lot A001 or A002 was used. That is, if the production lot A002 is opened at 11:50 on December 1, 2020, the time when the production lot A001 is reliably assembled to the vehicle by the unique calculation logic is until 11:49, and the production lot A001 or AO02 Assuming that the time at which one of them was assembled to the vehicle was 11:50 to 12:03, and the time at which the production lot A002 was securely assembled to the vehicle was after 12:04, each vehicle shown in FIG. When the passage times T are compared, VIN001 to VIN005 have the component X000001 of the manufacturing lot A001, VIN006 to VIN008 have the component X000001 of the manufacturing lot identification A001 or A002, and VIN009 and VIN010 have the component X000001 of the manufacturing lot A002. It is possible to link the fact that it has been assembled. However, it was not possible to clearly separate the usage times of A001 and A002.

On the other hand, in the present embodiment, the manufacturing lot identification information calculating unit 37 calculates the remaining amount for each component based on the performance information of the remaining amount detecting unit 35, thereby obtaining the manufacturing lot number as shown in FIG. It is possible to clearly distinguish the manufactured product assembled with the component X000001 of the production lot A001 from the manufactured product assembled with the component X000001 of the production lot A002. The details of this embodiment will be described below.

FIG. 4 is a processing flow of component assembly work performed for each process in this embodiment. In a factory, which is a site, a plurality of parts are assembled into a manufactured product in different processes depending on the model and the manufactured product. It is assumed that the worker starts work at the start of the production line operation, and the component boxes installed on the component shelf of the process at the start of the work and the components in the component boxes are stored in advance by the component box storage information acquisition unit 33. Assume that the product box identification information and the manufacturing lot identification information are linked.

First, in step S41, the product identification information acquisition unit 31 acquires the product identification information, and acquires the process passing information of the product entering the process on the production line.

Next, in step S42, model information linked to the product identification information is extracted from the product model information DB 41 using the product identification information acquired by the product identification information acquisition unit 31 as a key. It is assumed that the part information reception unit 32 has its own process information at the time of information acquisition, and using the model information acquired from the manufactured product model information DB 41 as a key, it accesses the model-specific component configuration information DB 42 and obtains the part information. get. Then, the assembly flag of the component to be assembled in its own process is updated from 0 to 1 based on the obtained component information and its own process information.

In step S43 in parallel with the processing of step S42, the remaining amount detection unit 35 acquires the component box identification information installed on the component shelf, and the worker takes out the component from the component box and assembles it. In step S44, the remaining amount reception unit 36 acquires the manufacturing lot identification information of the parts stored in the parts box from the parts box storage information DB 43. Based on the obtained information, the remaining amount of the component parts for each component box is calculated, and the remaining amount threshold flag is updated from 0 to 1 when the remaining amount becomes equal to or less than the threshold value. Then, in step S45, it is determined whether or not the remaining amount is zero.

If the remaining amount is 0 in step S45, the process returns to step S43, new component box information is acquired, and the subsequent processes are repeated. At the site, the operator takes out an empty component box from the component shelf, installs a component box containing the required components on the component shelf, and the remaining component box is replaced by the remaining amount detection unit 35. detect that On the other hand, for an empty component box, the component box storage information acquisition unit 33 acquires the component box identification information and the manufacturing lot identification information of the component to be stored when the component is stored next time. , the component box storage information storage unit 34 updates the component box storage information DB 43 .

If the remaining amount is not 0 after the calculation of the remaining amount in step S45, then in step S46, the production lot identification information calculating unit 37 sends the assembly flag calculated by the component information receiving unit 32 and the remaining amount receiving unit 36 The remaining amount of the parts when the parts are assembled to the manufactured product is calculated from the remaining amount threshold flag calculated by .

Then, in step S47, the database storage unit 38 stores product identification information, process information, process passing time information, parts identification information, manufacturing lot identification information and assembly quantity information, and manufacturing lot identification information calculation unit 37 The calculated remaining amount information is stored in the mounting parts record DB 44 . Then, the processing of the component assembly work performed for each process ends.

Application of the parts traceability management device 10 will be described below using a specific example in the automobile industry. For example, in step 60, it is assumed that product identification information VIN001 to VIN010 pass in order from VIN001. Note that the processing flow proceeds based on the actual product passage time information of the process acquired by the product identification information acquisition unit 31, so even if the product does not flow in order starting with VIN001, it is processed for each product identification information. is implemented and data is accumulated.

FIG. 5 shows acquired information when passing through VIN001 acquired by the product identification information acquisition unit 31 shown in FIG. 2 in this embodiment. The manufactured product identification information acquisition medium 13 has an installed process address (process information in the leftmost column). Get the time.

FIG. 6 is an example of data of VIN001 to VIN010 stored in the product type information DB 41 in this embodiment. It has model information such as "AB", "CD", and "EF" for product identification information.

FIG. 7 shows parts configuration information for each type information "AB", "CD", and "EF" stored in the model-specific parts configuration information DB 42 in this embodiment. Each model information has an installation process, component identification information, and component assembly quantity information.

FIG. 8 is a processing table for updating the assembly flag in step S42 shown in the processing flow for component assembly in FIG. 6 is acquired using the product identification information of FIG. 5 as a key, and the component configuration information of FIG. 7 is extracted using the acquired model information as a key, and the processing table shown in FIG. 8 is created. In FIG. 8, the assembly flag of the component to be assembled is updated from 0 to 1 in step 60 of the product identification information VIN001.

9A and 9B are examples of information stored in the component box storage information DB 43 in this embodiment. It is also possible to have component box identification information, component identification information, manufacturing lot identification information, number of items, and component storage time information. FIG. 9A shows the storage information of the component boxes BOX001 to BOX009 stored in the component box storage information DB 43 at the time when VIN001 passed (2020/12/1 11:32). As explained in the processing flow at time, when the remaining amount reaches 0, new parts are stored and overwritten. FIG. 9B shows that the storage information of component boxes BOX001 to BOX009 stored in the component box storage information DB is updated at the time when component assembly up to VIN010 is completed in step 60 (12:08 on December 1, 2020). After production lot A001 of component X000001 in component box BOX001, production lot B003 of component Y000001 at 12:10 on 12/12/2020, production lot of component Y000001 of BOX002 After B001, production lot C002 of component Z000001 is stored at 2020/12/1 12:30, and production lot D005 of component X000001 is stored at 2020/12/1 12:55 after production lot D001 of component W000001 in BOX4. This is the DB when If there is DB capacity, it is also possible to have an update history of manufacturing lot identification information.

FIG. 10A is a processing flow of the remaining amount detection unit 35 in this embodiment. The remaining amount detection medium 12 is installed for each process and has an installed process address. It detects the performance of the used parts/defective parts of the parts that have been used, and sends the information to the remaining amount detection unit 35 . The remaining amount detection unit 35 can have process information, component box identification information, track record of used components/defective components, work time information, and the like. For example, it is assumed that the remaining amount detection unit 35 utilizes AI attitude extraction.

AI posture extraction can detect a person's skeleton from a video. Assume that the camera, which is the remaining amount detecting medium 12, is fixed, and the area of each component box on the component shelf, the defective product shelf region, and the assembly region are also registered. Based on the information obtained from the remaining amount detection medium 12, the remaining amount detection unit 35 can detect that the specified part of the skeleton of the person has entered the specified area in the moving image. Therefore, the remaining amount detection unit 35 can detect the taken-out parts, the number of parts, and the number of used parts/defective parts by using the AI posture extraction function.

In FIG. 10A, in step S51, the remaining amount detection unit acquires the identification information of each component box on the component shelf by detecting, for example, a bar code with the remaining amount detection medium 12. 2 detects an event in which a component is taken out from each component box area of the component shelf, and starts counting the number of components taken out.

In step S52, it is determined whether the taken-out component is in the defective product shelf area or the working area for assembly. If the component has entered the defective product shelf area, the process proceeds to step S53 to count the number of defects.

Then, in step S55, the component box identification information and the usage record information are passed to the remaining amount receiving section. For example, in area determination, if one component is acquired from the component box BOX001, two from BOX002, and one from BOX003 and assembled into the vehicle, one defective component is found in the component taken out from BOX002. In this case, information obtained by the remaining amount detection unit as shown in FIG.

FIG. 11 is an image diagram of a work scene in defective product detection in the remaining amount detection scene shown in FIG. 10B. Areas surrounded by dotted lines indicate parts boxes detected by the remaining amount detection medium 12, defective product shelves 25, and assembly areas. FIG. 10B shows the data acquired by the remaining amount detection unit 35 in this case.

FIG. 12A is an image diagram of a work scene when the same component is stored in a plurality of component boxes on a component shelf. Areas surrounded by dotted lines indicate parts boxes detected by the remaining amount detection medium 12, the defective product shelf 25, and an assembly area. For example, in area determination, it is assumed that one component is obtained from the component box BOX004 and one from the component box BOX005, and assembled to the vehicle. FIG. 12B shows the data acquired by the remaining amount detection unit 35. As shown in FIG. Even if the same component is stored in a plurality of component boxes on the component shelf, if the area from which the component is taken out is known by the remaining amount detection medium 12, the remaining amount receiving unit can receive the component box storage information. By matching, the production lot identification information can be found.

13A and 13B are processing tables for calculating the remaining amount threshold flag of the remaining amount receiving unit in this embodiment. That is, it is a processing table for calculating the remaining amount threshold flag in the remaining amount receiving unit 36 in accordance with the procedure shown in the processing flow for component assembly of the component traceability management device 10 in FIG. 4 . Assuming that parts are assembled to the product identification information VIN001 to VIN010 in step 60 in the automobile industry described above, the data in the case where parts boxes BOX001 to BOX006 are set on the parts shelves are shown. . FIG. 13A is a processing table of the remaining amount reception unit before processing, and includes the component information of the component box storage information DB shown in FIG. 9 and the component box identification information acquired by the remaining amount detection unit shown in FIG. 10B. Based on the actual usage information, the remaining amount of parts is calculated using the parts box identification information as a key, and the processing table is updated as shown in FIG. 13B. When the remaining amount becomes equal to or less than the threshold, the remaining amount threshold flag of each component box is updated from 0 to 1. Assume that all the components shown in this embodiment have a remaining amount threshold of 5, and are set so that the remaining amount threshold flag is updated when the remaining amount becomes equal to or less than the threshold. As shown in FIG. 10B, the actual usage record is 1 used item from the component box BOX001, 2 used items from BOX002, 1 defective item, and 1 used item from BOX003. The remaining numbers of BOX001 to BOX003 are 4, 5, and 8 as shown in the figure, and the remaining amount threshold flags of the component boxes BOX001 and BOX002 below the remaining amount threshold are set to 1.

FIG. 14 is a diagram showing the calculation in step S46 of FIG. Assume that the vehicle from VIN001 to VIN010, which is the example described above, is linked to the component X000001 of the production lot A001 stored in the component box BOX001. As shown in FIG. 14, the remaining amount of component X000001 is 6 or more when the component is assembled to VIN001. is changed to the component X000001. It is assumed that the component X000001 is set such that the remaining amount threshold flag is updated from 0 to 1 when the remaining amount is 5, and the component X000001 is stored only in the component box BOX001. In FIG. 14, the assembly flag calculated by the component information reception unit 32 of FIG. When the flags are 1 in both the upper and lower stages, the remaining amount of the component is calculated, and when the remaining amount is equal to or less than the remaining amount threshold, the remaining number is recorded in the processing table of the remaining amount reception unit. The information of the processing table is stored in the installation component performance DB 44 from the database accumulation unit 38 . In the case of FIG. 14, it can be seen that the component X000001 assembled in VIN009 is the component assembled when VIN008 has a remaining amount of 1. Therefore, the boundary between the assembly results of production lots A001 and A002 of component X000001 is VIN008. and VIN009.

FIG. 15 shows an example of the information stored in the assembly component record DB 44 for VIN001 to VIN010 in step 60. As shown in FIG. It includes manufactured product identification information, process information, component identification information, assembly quantity, manufacturing lot identification information, remaining amount, process passing time, and other work time. As the remaining amount information, the remaining amount information recorded by the manufacturing lot identification information calculation unit 37 shown in FIG. 14 is inputted. Note that the remaining amount information is displayed only when the remaining amount threshold value is 5 or less and before and after the manufacturing lot identification information is switched from the standpoint of visibility, but the remaining amount information may always be displayed.

In the example shown in FIG. 15, when the parts are assembled from VIN001 to VIN010 in step 60, the parts whose manufacturing lot identification information has been changed are X000001, Y000001, and W000001.

For example, if the manufacturing lot A001 of the component X000001 in the process 60 has a remaining amount of 1 when assembling VIN008, according to the assembly component performance DB, the manufacturing lot A002 will be used when assembling the next VIN009. The timing at which the manufacturing lot A001 of the component X000001 is switched to A002 is between VIN008 and VIN009.

For example, the component Y000001 in process 60 has a quantity of 2 to be assembled to VIN008, but it can be seen that the component with a remaining amount of 1 is used when manufacturing lot B001 assembles one component to VIN008. . If you refer to the record below it, another part uses the part after it was replaced in the next production lot B002 from the assembly part result DB, and the remaining quantity is NULL because the quantity is MAX. is entered with For this reason, the timing at which the manufacturing lot B001 of the component Y000001 is switched to B002 is during assembly to VIN008.

Further, in the component W00001 in step 60, the same component is stored in a multi-component box. From FIG. 15, it can be seen that W000001 is stored in three locations D001, D002, and D003. D001 had a remaining amount of 3 when VIN002 was assembled. According to the attachment part record DB, the assembly of the part D004 next to the part D001 of BOX4 started from VIN007, and the timing of switching from the production lot D001 to the part W000001 to the production lot D004 was between VIN006 and VIN007.

FIG. 16 shows an example of a screen for searching on the manufacturing lot search screen of the screen display unit 14 according to this embodiment, using the component identification information, the manufacturing lot identification information, and the process information as conditions. As an essential condition, search is possible if either part identification information or manufacturing lot identification information is specified. In addition to the minimum item identification information and manufacturing lot identification information, for example, process information can be designated as search condition items. It is also possible to add search condition items, and it is also possible to search by adding information such as work time. Also, in the sorting function on the upper right of the screen in the figure, it is shown that the work time is selected and sorted and displayed, but other items such as manufacturing lot identification information are selected and sorted. is also possible. Furthermore, by clicking the product identification information, it is possible to refer to the information using the product identification information as a key on the vehicle search screen of FIG. 17 by the link function.

FIG. 16 shows a situation in which the search result screen is displayed on the left side of the screen when the search conditions are X000001 for component identification information, A001/A002 for production lot identification information, and 60 for process information. ing. The data items to be output are basically assumed to be the data of the assembly parts record DB. For example, the process passage time can also be output.

At the timing when the remaining amount of the component X000001 in step 60 is counted down based on the remaining amount threshold, it is divided and displayed like a dotted line between VIN001 and VIN002, for example. The switching point of the production lot identification information of the component is defined as the switching point of the production lot identification information. shall be clearly separated and displayed. As a result, the manager can easily see the switching point of the manufacturing lot identification information, which leads to more efficient management.

FIG. 17 shows an example of the vehicle search screen of the screen display unit in which product identification information and work time are used as keys. In FIG. 17, product identification information and work start/end time can be designated as search condition items. Search condition items can be added, and information such as component identification information and manufacturing lot identification information can also be added for searching. Also, in the sorting function on the upper right of the screen in the figure, it is shown that the product identification information is selected and sorted and displayed, but other items such as work time are selected and sorted. is also possible. Furthermore, by clicking the manufacturing lot identification information, it is possible to refer to the information using the lot product identification information as a key on the manufacturing lot search screen of FIG. 16 by the link function.

In FIG. 17, the search conditions are those whose product identification information is VIN001/VIN002, work start time is 2020/12/1 9:00, and work end time is 2020/12/1 12:00. It is executed and the results are shown on the left side of the screen. The data items to be output are basically assumed to be the data of the installation parts record DB, but it is also possible to output, for example, the process passage time.

Since the process information is not specified, the data that meet the above conditions in all processes are output. In Y000001 of step 60 of VIN001, the data is emphasized with, for example, a thick line or a record with a different color so that it can be seen that the data was stored when the remaining amount in the parts box was 2, which is less than the threshold. As a result, the administrator can easily see whether or not the manufacturing lot identification information is immediately before the switching point, which leads to more efficient manufacturing lot management of the component parts for each product identification information.

In this way, in the typical manufacturing lot identification information calculation function of this embodiment, the parts box storage information DB, the parts box identification information of the remaining amount detection unit that can detect used parts/defective parts, and the usage record Based on the remaining amount threshold flag calculated by the remaining amount reception unit from the information, the parts identification information to be assembled in each process from the product identification information acquisition unit, the product model information DB, and the parts configuration information DB by model Using the assembly flag calculated by the information reception unit, the parts assembled for each product identification information are linked to the production lot identification information of the parts, and the arbitrary remaining amount determined for each part. For the parts that have reached the limit, the remaining amount of the parts at the time of linking is calculated by the production lot identification information calculation unit. As a result, it is possible to assemble parts based on the actual results of used parts/defective parts of the parts to the manufactured product, which improves the accuracy of linking the production lot identification information of the parts attached to the manufactured product. , the accuracy of the traceability technology of the production line is improved.

As described above, according to this embodiment, since the production lot identification information is recorded based on the remaining amount of parts for each part box in each process, the conventional time comparison shown in FIG. Lot identification information can be easily identified even when it is difficult to identify it. This can contribute to improving the efficiency of component traceability.

There are two ways of thinking about how to utilize traceability data: trace forward and trace back. The above-mentioned improvement in the efficiency of component traceability will also lead to the promotion of these forms of utilization. In other words, in the traceback, by introducing this embodiment, it becomes possible to easily identify the manufacturing lot of the component that caused the defect from the manufactured product in which the defect occurred, and reduce the investigation period and investigation cost when the recall occurs. reduction is expected. In addition, in trace forward, by introducing this embodiment, it is possible to specify the manufactured products linked to the production lot of the parts within a clear range, and furthermore, by improving the quality, the motivation of the workers is increased, and the skills are improved. In addition to drawing out improvements in manufacturing processes, the clarification of the manufacturing process will increase the quality certification of the product and the reliability of manufacturing, which will contribute to the improvement of the corporate value of the manufacturer.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations.

10: Component traceability management device, 11: Code information reading medium, 12: Remaining amount detection medium, 13: Product identification information acquisition medium, 14: Screen display unit, 21: Storage lot, 22: Components, 23: Components Item box 24: Component shelf 25: Defective product shelf 31: Manufactured product identification information acquisition unit 32: Component information reception unit 33: Component box storage information acquisition unit 34: Component box storage information accumulation Section 35: Remaining amount detecting section 36: Remaining amount receiving section 37: Manufacturing lot identification information calculating section 38: Database storage section 41: Manufactured product model information DB 42: Model-specific parts configuration information DB 43 : Component box storage information DB, 44: Assembled component actual DB, 80: Manufactured product

Claims (11)

A component traceability management device for managing production lot identification information of components constituting the manufactured product in a process of manufacturing the manufactured product,
a manufactured product identification information acquiring unit that receives manufactured product identification information of the manufactured product;
a parts information receiving unit that calculates assembly flags of the parts constituting the manufactured product from the manufactured product identification information and model information for each of the manufactured product identification information;
a component box storage information acquisition unit that acquires the manufacturing lot identification information for each component box;
a remaining amount detection unit for detecting the component box information and the number of used components to be incorporated into the manufactured product of the component or the quantity of defective components not to be incorporated;
a remaining amount reception unit that calculates a remaining amount threshold flag when the remaining amount of the parts becomes equal to or less than a threshold based on the quantities of the used parts and the defective parts;
A parts traceability management device, comprising: a manufacturing lot identification information calculation unit that calculates a remaining amount of parts when the parts are assembled to the manufactured product based on the assembly flag and the remaining amount threshold flag. In the component traceability management device according to claim 1,
The parts traceability management device, wherein the manufacturing lot identification information calculation unit calculates a switching point of the manufacturing lot identification information based on a remaining amount of parts when the parts are assembled to the manufactured product. In the component traceability management device according to claim 2,
According to the switching point of the manufacturing lot identification information, the manufactured product identification information of the manufactured product, the component identification information of the components constituting the manufactured product, and the manufacturing lot identification information are linked and stored in a storage unit. A component traceability management device comprising a database storage unit for storing. In the component traceability management device according to claim 3,
A component traceability management device comprising a screen display section for displaying data accumulated in the database accumulation section. In the component traceability management device according to claim 3,
A part traceability management device, characterized in that the data accumulated in the database accumulation unit is transmitted for display on an external screen display unit. In the component traceability management device according to claim 1,
The manufactured product identification information acquisition unit acquires the manufactured product identification information of the manufactured product passing on the production line from a manufactured product identification information acquisition medium installed for each process,
The component box storage information acquisition unit acquires the production lot identification information from a code information reading medium,
The component traceability management, wherein the remaining amount detection unit acquires the component box information and the information regarding the quantity of the used components and the defective components from a remaining amount detection medium installed for each process. Device. In the component traceability management device according to claim 6,
The product identification information acquisition medium is an RFID reader,
The code information reading medium is a barcode reader,
The remaining amount detection medium is a camera,
receiving information from the product identification information acquisition medium, the code information reading medium, and the remaining amount detection medium via a communication network;
Parts traceability, wherein the remaining amount detection unit obtains the parts box information and the quantities of the used parts and the defective parts by means of AI posture extraction processing means from the image acquired by the camera. management device. A management method for a parts traceability management device for managing production lot identification information of parts constituting a manufactured product,
Obtaining product identification information of the product passing through the production line,
calculating assembly flags of the parts constituting the manufactured product from the manufactured product identification information and model information for each of the manufactured product identification information;
Acquiring the manufacturing lot identification information for each component box,
Detecting component box information and the number of used components to be incorporated into the manufactured product of the component or the quantity of defective components not to be incorporated,
calculating a remaining amount threshold flag when the remaining amount of the parts is equal to or less than a threshold from the quantities of the used parts and the defective parts;
A management method for a parts traceability management device, comprising: calculating a remaining amount of parts when the parts are assembled to the manufactured product based on the assembly flag and the remaining amount threshold flag. In the management method of the component traceability management device according to claim 8,
A management method for a parts traceability management device, wherein a switching point of the manufacturing lot identification information is calculated based on a remaining amount of parts when the parts are assembled to the manufactured product. A management method for a parts traceability management device for managing production lot identification information of parts constituting a product capable of communicating with a product identification information acquisition medium, a code information reading medium, and a remaining amount detection medium via a communication network. hand,
a step of receiving product identification information of the product passing on the production line from the product identification information acquisition medium;
a step of calculating assembly flags of the components constituting the manufactured product from the manufactured product identification information and model information for each of the manufactured product identification information;
a step of receiving the manufacturing lot identification information for each component box from the code information reading medium;
receiving video information from the remaining amount detection medium;
a step of detecting, from the video information, the component box information and the quantity of used components to be incorporated into the manufactured product of the component or the quantity of defective components not to be incorporated into the manufactured product by AI posture extraction processing means;
a step of calculating a remaining amount threshold flag when the remaining amount of said parts is equal to or less than a threshold based on the quantity of said used parts and said defective parts;
and calculating a remaining amount of parts when the parts are assembled to the manufactured product based on the assembly flag and the remaining amount threshold flag. In the management method of the component traceability management device according to claim 10,
A management method for a component traceability management device, further comprising a step of calculating a switching point of the manufacturing lot identification information based on a component remaining amount at the time of assembly of the component to the manufactured product.

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