JP4433374B2 - Traceability management method and management apparatus - Google Patents

Description

  The present invention relates to a traceability management method and management apparatus, and more particularly to traceability management of electronic / electric equipment, machines, vehicles, housing members, and all products including these parts manufactured by assembling single or multiple parts. The present invention relates to a suitable traceability management method and management apparatus.

  Quality data of parts and raw materials used in manufacturing for quality control of products, manufacturing conditions such as temperature, time and dimensions, adjustment data when products are adjusted, inspection data obtained when products are inspected, etc. The production history information is managed in the database of the product manufacturer. In order to access the manufacturing history of each product recorded in this database, the product number is assigned to the product. For example, a nameplate is attached to a product such as an electric device, and the name of the manufacturer, the name of the product, the product number (serial number), and the like are printed on the nameplate.

  And if the product is shipped and there is an inquiry about the quality from the user who purchased it, you can access the production history information of that product by searching the database based on the production number etc., This information can be provided. Further, by collecting defect information, complaints, and the like and feeding back such information to the development / manufacturing department, it is possible to reflect this information in the manufacturing process and prevent the manufacture of defective products.

  Also, instead of accessing the database, the manufacturing history information is converted into a two-dimensional code, and a printed version of the converted two-dimensional code is attached or pasted to the product, and directly from the two-dimensional code. A technique for obtaining manufacturing history information is known (see, for example, Patent Document 1).

JP 2003-140726 A (page 2-5, FIG. 1-6)

  However, in the method of storing manufacturing history information in a database or a two-dimensional code as described above, it is possible to obtain history information of the product, but it is possible to obtain history information of individual parts constituting the product. There wasn't.

  Therefore, even if a defective part is determined from information such as defect information and complaints, the manufacturing history information of the defective part cannot be obtained, or it takes time to access the manufacturing history information of the defective part. There are inconveniences that the production of non-defective products cannot be effectively avoided and it takes time to avoid the production of defective products. In addition, it takes a lot of time to answer inquiries and complaints regarding quality from consumers.

  In view of the above-mentioned problems, the object of the present invention is to easily access the manufacturing history information of individual parts constituting the product, and can effectively avoid the manufacture of defective products by reflecting it in the manufacturing process of the product. Another object of the present invention is to provide a traceability management method and management apparatus that can quickly respond to answers to inquiries and complaints regarding quality from consumers.

  According to the present invention, the subject is a method for managing manufacturing history information of a product composed of a single part or a plurality of parts, the manufacturing history information acquiring step for acquiring manufacturing history information about the parts, A two-dimensional encoding step for two-dimensionally encoding data including identification number or manufacturing history information for specifying manufacturing history information for the part, and a size of the two-dimensional code that is two-dimensionally encoded according to the part. A parameter setting step for setting, a laser marking step for directly marking the part with a two-dimensional code of a set size by means of a laser marker, and assembling the part on which the two-dimensional code is laser-marked. This is solved by providing a manufacturing process for manufacturing.

  As described above, for a product manufactured by assembling a single or a plurality of parts, data including the identification number or the manufacturing history information for acquiring the manufacturing history information about the component and accessing the manufacturing history information. The size of the two-dimensional code obtained by converting into a two-dimensional code is set according to the part, and the set two-dimensional code is directly laser marked on the part with a laser marker, and the marked part is assembled to manufacture a product. Therefore, if there is a defect in the product and a defective part is specified, the identification number can be known by reading the two-dimensional code attached to the defective part. Based on this identification number, it is possible to access the manufacturing history information. In addition, by marking with a two-dimensional code including a large amount of information on materials, manufacturing conditions, and finished quality, it is possible to inquire about quality by reading the two-dimensional code directly without accessing the manufacturing history information stored separately. And respond quickly to complaints.

  Since a two-dimensional code is set for the part according to its size and the like, the two-dimensional code can be marked regardless of the size of the part. When marking parts with a minimum size, the size of the two-dimensional code is minimized. For parts with a maximum size, marking with a freely set size of the two-dimensional code is possible. A two-dimensional code can be attached to a part, and manufacturing history information can be accessed from this two-dimensional code. In addition, by marking with a two-dimensional code including a large amount of information on materials, manufacturing conditions, and finished quality, it is possible to inquire about quality by reading the two-dimensional code directly without accessing the manufacturing history information stored separately. And respond quickly to complaints.

  Further, in the laser marking step, the two-dimensional code is converted into dots formed by laser beam irradiation based on the size of the two-dimensional code set in the parameter setting step, or n × m. Unit cells arranged vertically and horizontally (where n and m are integers), unit cells formed by painting in a rectangular shape by continuous irradiation of a laser beam, or enclosed by a rectangular shape by continuous irradiation of a laser beam It can be formed by any one of the unit cells.

  Thus, the marking of the two-dimensional code can be performed by various methods. In particular, in marking with dots (so-called dot marking), by arranging the dots vertically and horizontally in the cells, cells having a uniform depth can be formed, so that the reading accuracy of the two-dimensional code can be improved. it can.

  In the laser marking step, it is preferable that a two-dimensional code is laser-marked on each target component by a plurality of laser markers. It is preferable that the laser marking step includes a step of reading the laser-marked two-dimensional code and confirming whether the two-dimensional code is correctly marked.

  Further, the subject is a traceability management apparatus that manages manufacturing history information of a product composed of a single part or a plurality of parts, the means for acquiring manufacturing history information about the parts constituting the product, and Based on the size of the two-dimensional code set according to the part, means for storing the manufacturing history information, means for two-dimensionally coding the data including the identification number or manufacturing history information for specifying the manufacturing history information This is solved by providing means for directly laser marking the dimension code on the part.

  In the present invention, a two-dimensional code including an identification number capable of accessing manufacturing history information for individual parts constituting a product, or a large amount of information such as material, manufacturing conditions, and finished quality (manufacturing history information) A two-dimensional code containing is directly laser marked. Since the individual parts have different sizes and markable areas, the two-dimensional code size is set accordingly. As a result, it is possible to laser-mark the two-dimensional code for almost all parts from parts having a minimum size to parts having a maximum size.

  Therefore, when a product malfunction is caused by a part, it is possible to immediately access the manufacturing history information of the part by reading the two-dimensional code attached to the part. For this reason, the tracking time for accessing the manufacturing history information is greatly shortened, and the manufacturing history information can be reliably accessed. Then, by reflecting the manufacturing history information of the parts thus obtained in the manufacturing process of the product, it is possible to effectively avoid the manufacturing of defective products. Also, when marking a two-dimensional code including a large amount of information such as materials, manufacturing conditions, and finished quality, the manufacturing is performed by directly reading the two-dimensional code without accessing the separately stored manufacturing history information. It is possible to know history information and quickly respond to quality inquiries and complaints.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention. FIG. 1 is an explanatory diagram of manufacturing history information and parts flow, FIG. 2 is an explanatory diagram of a traceability management system, FIG. 3 is an explanatory diagram of a two-dimensional code, FIG. 4 is an explanatory diagram showing a configuration of a data control device, and FIG. FIG. 6 is an explanatory diagram showing a work process, FIG. 7 is an explanatory diagram of another traceability management system, FIG. 8 is an explanatory diagram of a cell, FIG. 9 is an explanatory diagram of a two-dimensional code, and FIG. FIG. 7 is an explanatory diagram of another traceability management system.

  In the present embodiment, an electric device 70 will be described as an example of a product. In the present invention, the term “product” is intended to indicate an electronic / electrical device, machine, vehicle, housing member, or any product including these components that is manufactured by assembling single or plural parts. The electric device 70 is manufactured by assembling a plurality of parts 72 (72a, 72b...). As shown in FIG. 1, the parts 72 ordered by the product manufacturer A are delivered from the respective component manufacturers B to the product manufacturer A.

  When the part 72 is delivered to the product manufacturer A, the manufacturing history information about the part 72 is transmitted from the part manufacturer B to the product manufacturer A via the communication network I such as the Internet. The manufacturing history information can be specified by a delivery number assigned to the delivered part 72 or the like.

  In the product manufacturer A, the manufacturing history information is received by the data control device 10, and the received manufacturing history information is associated with the part 72 and specified by a delivery number or the like. The manufacturing history information includes manufacturing date / time, manufacturing line number, product number, manufacturing person number, part use lot number, inspection judgment result, shipping tray number, information on material contents and manufacturing conditions, and the like.

  The parts 72 are sorted by the identification number, and the manufacturing history information specified by the delivery number or the like is stored in the database 16c in the data control apparatus 10 described later based on the identification number. At that time, a parts manufacturer code, item code, delivery number, and the like are added to the database 16c. That is, even if the parts 72 are the same, those having different manufacturing dates and times and manufacturing line numbers are given different identification numbers, and the parts 72 having the same identification numbers are regarded as the same. Therefore, if the identification number is specified, the manufacturing history information of the part 72 in the database 16c can be accessed.

  In this example, the manufacturing history information is received by the data control apparatus 10 via the communication line network I and stored in the database 16c. However, the present invention is not limited to this, such as the product number attached to the package of delivered parts. Manually input data into the database 16c, read the information in the barcode, two-dimensional code, and IC tag attached to the containing package with a reader and input it into the database 16c, or store manufacturing history information from the component manufacturer B The received electronic medium may be received and input to the database 16c.

  The configuration of the traceability management system S (hereinafter referred to as system S) of this example will be described. The system S, as shown in FIG. 2, controls the sequence of laser marking performed by the data control apparatus 10 connected to the communication network I and the plurality of transport lines 81 (81a, 81b...). Marked by the terminal 20, the control terminal 30 (30a, 30b...) Arranged for each conveyance line 81, the laser marker 40 (40a, 40b...) Controlled by each control terminal 30, and the laser marker 40. And a reader 60 (60a, 60b) for reading a two-dimensional code.

  The electrical device 70 sequentially assembles the parts 72 conveyed by the conveyance line 81 (81a, 81b...) To the workpiece conveyed on the main conveyance line 80 by a robot arm or the like (not shown). It is manufactured by performing the inspection. In the following embodiments, the electric device 70 composed of a plurality of parts is described as an example of a product. However, the present invention can be applied to a product / part composed of a single part / material. Of course you can.

  The parts 72 are sequentially conveyed by the conveyance line 81. A laser marker 40 for marking the two-dimensional code 1 on the component 72 to be conveyed is disposed on each conveyance line 81. The laser marker 40 sequentially marks the two-dimensional code 1 including the identification number for accessing the manufacturing history information at a predetermined position of the part 72 that has been transported by the transport line 81.

  Each transport line 81 is provided with a reader 60 on the downstream side of the laser marker 40. The reader 60 reads the two-dimensional code 1 marked by the laser marker 40 in accordance with a control signal from the control terminal 30 and transmits the read two-dimensional code 1 to the control terminal 30. The control terminal 30 checks whether or not the two-dimensional code 1 transmitted from the reader 60 matches the two-dimensional code 1 marked on the laser marker 40. If it is determined as a result of the confirmation that the two-dimensional code 1 is not matched, the component 72 marked with the two-dimensional code 1 is removed from the transfer line 81 by a robot arm (not shown).

  Note that the sequence terminal 20 of this example controls the sequence of laser marking performed on the plurality of transport lines 81, but the data control apparatus 10 may be configured to perform this function.

  The data control apparatus 10 includes a CPU 11 that performs various controls, an input unit 12 that includes a keyboard and a mouse, a display unit 13 that includes a monitor, a liquid crystal screen, and the like, and input / output to a printer and an electronic storage medium. An output unit 14 configured by a device or the like, an input / output unit 15 configured by a modem or the like, and a storage unit 16 configured by an HDD or a memory are provided. The storage unit 16 stores a control program 16a, a RAM 16b used as a work area, a database 16c that stores manufacturing history information of the component 72, and parameter information 16d that stores various parameters for laser marking. The database 16c may be stored in another device so that the data control device 10 can access the database 16c. Further, the database 16c used when responding to an inquiry about quality, complaints, etc. can be further copied and stored in an external device (not shown).

  The input / output unit 15 is connected to the communication circuit network I, and the data control apparatus 10 can receive the manufacturing history information of the component 72 from the communication terminal of the component manufacturer B through the communication circuit network I. Further, the manufacturing history information may be downloaded by accessing the communication terminal from the data control device 10 through the communication circuit network I and stored in the database 16c.

  The CPU 11 stores the manufacturing history information of the component 72 received via the input / output unit 15 in the database 16c of the storage unit 16 based on the control program 16a. Further, the CPU 11 can take in manually input data or data stored in an electronic medium from the input unit 12 and store it in the database 16c. The CPU 11 converts the data stored in the database 16 c into a two-dimensional code based on the operation input of the operator, and transmits a control signal for marking to the control terminal 30 via the sequence terminal 20.

  FIG. 5 shows the configuration of the laser marker 40. The laser marker 40 has a predetermined depth in accordance with a control signal from the control terminal 30 and marks, for example, a circular dot in plan view on the component 72, so that the controller 42 has an ultrasonic Q switch element 43, an internal shutter 44, and an external shutter. 45, the attenuator (light attenuator) 46 and the galvanometer mirror 47 are controlled to mark one dot with one or a plurality of Q switch pulses.

  In the figure, reference numeral 51 denotes a total reflection mirror, 52 denotes an internal aperture (mode selector), 53 denotes a lamp house, 54 denotes an output mirror, 55 denotes an aperture, 56 denotes a leveling mirror, 57 denotes a Galileo expander, and 58 denotes An aperture, 59 is an f-θ lens, and 50 is a laser oscillator.

  The two-dimensional code is a combination of black cells 2a and white cells 2b arranged in a matrix as shown in FIG. 3A, and forms a light and dark pattern, and the format is a data matrix, Veri code, QR code. , Aztec code, Maxi code, PDF417, micro PDF, etc. can be used.

  The laser marker 40 of this example is a dark pattern in which, for example, a substantially circular dot 5 in a plan view is arranged in vertical and horizontal directions in n × n or n × m (where n and m are integers) by a so-called dot marking technique. A two-dimensional code 1 is formed by arranging such square or rectangular unit cells as unit cells (see FIG. 9). The dots 5 do not have to be substantially circular in plan view and may be substantially rectangular in plan view.

  The dots 5 have a diameter of, for example, 30 μm, and can be arranged on the beam irradiation surface by intermittently irradiating the laser beam while controlling the irradiation position of the laser beam. At this time, a unit cell in which dots are aligned vertically and horizontally is formed by setting a vertical and horizontal distance between the dots to a predetermined interval. For example, the vertical and horizontal distances can be set to 30 μm. Therefore, the size of the two-dimensional code 1 displaying the same data can be changed by appropriately selecting the diameter of the dot 5, the distance between the dots 5, and n and m.

  For example, the two-dimensional code 1 can be configured as one dot per cell, and the two-dimensional code 1 can be configured as an array of, for example, 10 × 10 dots 5. As described above, the two-dimensional code 1 can be laser-marked if the unit cell is set small for an extremely small part having a dimension of several tens to several hundreds of μm, while the dimension is several centimeters to several tens of micrometers. For maximal parts of cm, the unit cell can be set large and the two-dimensional code 1 can be laser marked. In the two-dimensional code 1, for example, 7 or more alphanumeric characters can be recorded per 0.25 mm square. By setting the laser beam diameter small, it is possible to make finer marking.

  Note that one cell may not be represented by one or a plurality of dots but may be represented by a so-called vector marking technique. In this method, while continuously irradiating a laser beam, the irradiation position of the laser beam is scanned vertically or horizontally in a square or rectangular cell, so that a line having a beam width is filled in a square or rectangular shape. Thus, a unit cell can be formed. Alternatively, a rectangular unit cell may be formed by scanning a portion irradiated with the laser beam in a rectangular shape.

  As described above, the two-dimensional code 1 of the present example can directly perform laser marking from the part 72 having the smallest dimension to the part 72 having the largest dimension. For this reason, in the past, it was impossible to give an identification number, information on material contents / manufacturing conditions, etc. to a minimal component. However, according to the present invention, a two-dimensional code including an identification number also for a minimal component. Therefore, it is possible to manage the traceability of almost all the parts 72 constituting the electric device 70.

  Further, in the present invention, since laser marking is directly performed on the component 72, printing can be performed over time as compared with the case where the printed two-dimensional code 1 is pasted or the two-dimensional code 1 is printed directly. This is suitable because it does not peel off or the printed part becomes faint and cannot be recognized. Further, since the marking is performed by the laser beam, there is no consumable as in the case of attaching printing or the like, which is preferable.

  Next, the work process by the system S will be described with reference to FIG. First, in the manufacturing history information acquisition step, the manufacturing history information of the component 72 obtained from the communication network I or the like is stored in the database 16c (S1). Then, the operator designates an identification number for specifying the manufacturing history information of the part 72 to be transported for each transport line 81 using the input unit 12 (S2). The identification of the manufacturing history information corresponding to the component 72 to be conveyed is performed by a delivery number or the like.

  In the two-dimensional encoding process, the data control device 10 converts the identification number designated for each conveyance line 81 to form the two-dimensional code 1, and the two-dimensional code 1 is converted as shown in FIG. The unit cell of the black cell 2a and the white cell 2b constituting the light and dark pattern is made to correspond to 0 and 1, respectively, to form the two-dimensional array data 3 having 1 bit per cell as shown in FIG. 3B (S3). .

  Next, in the parameter setting step, the size of the two-dimensional code 1 is input and set to the input unit 12 in consideration of the size of the marking area of the component 72, and based on the size of the two-dimensional code 1, as shown in FIG. In addition to the size information such as the size of one cell, the processing diameter of the beam spot according to the material to be processed and the number of beam spots entering one cell, laser power, Q switch frequency, dot irradiation time, frequency, laser An optimum value such as a wavelength is designated based on the parameter information 16d (S4).

  In other words, since the laser reaction value varies depending on the material to be processed for marking, the diameter of the dot 5 to be formed is different even when a beam spot with the same diameter and the same output is irradiated. The processing diameter of the beam spot is set in advance from the size of 5, and based on this, the vertical and horizontal numbers (n, m) of the dots 5 arranged in one cell, the distance between the dots 5, and the like are set. That is, as described later, when marking the two-dimensional code 1 including the same data, the size of the two-dimensional code 1 can be appropriately set according to the size of the marking area of the component 72.

  Next, the size information of the one cell is combined with the two-dimensional array data 3 converted to one bit per cell, and converted into processing data in which the beam spot coordinates are stored in the scanning order. The process so far is performed by the data control apparatus 10, and the converted machining data and control signal are transmitted to the sequence terminal 20 (S5). At this time, each coordinate data for forming the dots 5 by beam irradiation is specified.

  In the marking step (S6), the sequence terminal 20 sequences the processing order of the processing data. That is, the processing data is transferred in parallel to the control terminals 30a, 30b... As shown in FIG. 2, and marking processing is performed at the same time. Alternatively, the processing data is serially transferred as shown in FIG. It is determined whether to sequentially send to 30b. That is, in the configuration shown in FIG. 2, the control terminal 30 is directly connected to the sequence terminal 20, and each control terminal 30 performs marking control in parallel. On the other hand, in the configuration shown in FIG. 7, the control terminals 30 are connected in series, and laser marking by the laser marker 40 is performed at predetermined time intervals.

  As described above, when the processing data in which the beam spot coordinates are stored is transferred in parallel to the control terminals 30a, 30b,..., The laser beam is irradiated onto the display surface of the material by the laser markers 40a, 40b,. Then, as shown in FIG. 9A, the dots 5 are arranged vertically and horizontally to form the black cells 2a, and the portions not irradiated with the laser beam become white cells 2b to form the two-dimensional code 1. This black cell 2a is defined as the size of the cell 2, the dots 5 are arranged along the outer frame of the cell 2, and the number of the dots 5 arranged therein is also defined. can do.

  The two-dimensional code 1 laser-marked in this way is read by the reader 60 arranged on the downstream side of the laser marker 40, and the read two-dimensional code 1 is transmitted to the control terminal 30. In the control terminal 30, it is confirmed whether or not the marking is correctly performed. That is, the control terminal 30 checks whether or not the two-dimensional code 1 transmitted from the reader 60 matches the two-dimensional code 1 marked on the laser marker 40. If it is determined that they match, the part 72 is assembled to the workpiece on the transfer line 80 in the manufacturing process (S6). If it is determined that they do not match, the part 72 is not acceptable. It is removed from the transfer line 81 by the illustrated robot arm or the like.

  FIG. 9A shows an example of the two-dimensional code 1 in which dots 5 arranged in 4 × 4 are set as one cell. On the other hand, FIG. 9B is an example in which the same two-dimensional code 1 is formed by setting one dot per cell. In FIG. 5B, dots 5 having the same processing diameter as that in FIG. That is, the vertical and horizontal lengths of the two-dimensional code 1 in FIG. 5B are approximately 1/4 times the vertical and horizontal lengths of the two-dimensional code 1 in FIG. Thus, the same information can be represented by two-dimensional codes 1 of different sizes.

  Further, by accurately controlling the beam spot coordinates, the two-dimensional code 1 with high precision in the arrangement of the dots 5 can be marked, so even when the two-dimensional code 1 is set to a fine size, it is high. Reading accuracy can be ensured.

  In the above embodiment, the data to be two-dimensionally coded is the identification number of the part 72. However, the present invention is not limited to this, and the manufacturing history information itself can be used for a wide marking area such as a maximal part. May be two-dimensionally coded and marked. In this way, by identifying the defective part and reading the two-dimensional code 1 attached to the part, it is possible to directly know the manufacturing history information, and it is possible to quickly respond to quality inquiries and complaints. Become. Further, the two-dimensional code 1 may be laser-marked for almost all the parts 72 constituting the electric device 70, or the two-dimensional code 1 may be laser-marked only for important parts.

  As described above, since the two-dimensional code 1 representing the identification number is directly laser-marked on the component 72 of the electric device 70, the component 72 that causes the failure is specified when the electric device 70 has a problem. Then, the manufacturing history information stored in the database 16c can be immediately and reliably accessed from the two-dimensional code 1 attached to the component 72.

  Thereby, it is possible to know the manufacturing date and time, the manufacturing line number, the product number, the manufacturing person number, the part use lot number, the inspection judgment result, the shipping tray number, etc. of the part 72 that causes the malfunction. It is possible to quickly track and investigate distribution channels, manufacturing processes, and the like. Then, the cause of the faulty parts can be identified, and in the next product process, defects such as those manufacturing equipment can be adjusted, repaired and improved, defective products can be eliminated, and the manufacturing cost of the electrical equipment 70 can be reduced as a whole. It becomes possible to do. In addition, complaint costs and customer service costs can be reduced.

  Further, since the fine two-dimensional code 1 can be attached to the component 72 by laser marking, two-dimensional codes are applied to almost all the components 72 from the extremely small size component 72 to the maximum size component 72. Code 1 can be marked. As a result, manufacturing history information can be immediately obtained even for a component 72 of a very small size, which has conventionally been difficult to follow up quickly.

  In the above embodiment, the laser marker 40 and the reader 60 are arranged on each conveyance line 81 for supplying the component 72 to the main conveyance line 80. However, the present invention is not limited to this, as shown in FIG. Alternatively, the laser marker 40 and the reader 60 may be disposed on the transfer line 82.

  In this case, the component 72 delivered from the component manufacturer B is placed on the conveyance line 82, and the two-dimensional code 1 transmitted from the data control device 10 via the sequence terminal 20 is marked by the laser marker 40. Then, the laser-marked two-dimensional code 1 is read by the reader 60, and it is determined whether or not it is correctly marked by the control terminal 30. Further, the connection between the sequence terminal 20 and each control terminal 30 may be connected in parallel as shown in FIG. 5A or may be connected in series as shown in FIG.

It is explanatory drawing of the manufacture log | history information based on this invention, and the flow of components. It is explanatory drawing of the traceability management system which concerns on this invention. It is explanatory drawing of the two-dimensional code which concerns on this invention. It is explanatory drawing which shows the structure of the data control apparatus which concerns on this invention. It is explanatory drawing which shows the structure of the laser marker which concerns on this invention. It is explanatory drawing which shows the work process which concerns on this invention. It is explanatory drawing of the other traceability management system which concerns on this invention. It is explanatory drawing of the cell which concerns on this invention. It is explanatory drawing of the two-dimensional code which concerns on this invention. It is explanatory drawing of the other traceability management system which concerns on this invention.

Explanation of symbols

1 2D code, 2 cells, 2a black cell, 2b white cell, 3 2D array data, 5 dots, 10 data control device, 11 CPU, 12 input unit, 13 display unit, 14 output unit, 15 input / output unit, 16 storage unit, 16a control program, 16b RAM, 16c database, 16d parameter information, 20 sequence terminal, 30 control terminal, 40 laser marker, 42 controller, 43 switch element, 44 internal shutter, 45 external shutter, 47 galvanometer mirror, 50 YAG Laser oscillator, 51 Total reflection mirror, 52 Internal aperture, 53 Lamp house, 54 Output mirror, 55 Aperture, 56 Leveling mirror, 57 Galileo expander, 58 Aperture, 59 f-θ lens, 60 Reader, 70 Electrical equipment, 72 Component parts, 80, 81, 82 Conveyance line, A product manufacturer, B parts manufacturer, I Communication line network, S Traceability management system

Claims (5)

A method for managing manufacturing history information of a product composed of a single part or a plurality of parts,
Manufacturing history information acquisition step of acquiring manufacturing history information about the part;
A two-dimensional encoding step for two-dimensionally encoding data including an identification number or manufacturing history information for specifying manufacturing history information about the part;
A parameter setting step for setting the size of the two-dimensional code converted into a two-dimensional code according to the component;
A laser marking process in which a two-dimensional code of a set size is directly laser-marked on the part by a laser marker;
A traceability management method comprising: a manufacturing process for manufacturing a product by assembling a part on which the two-dimensional code is laser-marked. In the laser marking step, based on the size of the two-dimensional code set in the parameter setting step, the two-dimensional code is changed to n × n or n × m (dots formed by laser beam irradiation). n and m are integers) unit cells arranged vertically and horizontally, unit cells formed by painting with a rectangular shape by continuous irradiation of a laser beam, or units formed by surrounding with a rectangular shape by continuous irradiation of a laser beam The traceability management method according to claim 1, wherein the traceability management method is formed by any one of the cells. 2. The traceability management method according to claim 1, wherein in the laser marking step, a two-dimensional code is laser-marked on each target component by a plurality of laser markers. The traceability management method according to claim 1, wherein the laser marking step includes a step of reading the laser-marked two-dimensional code and confirming whether the two-dimensional code is correctly marked. . A traceability management device that manages manufacturing history information of a product composed of a single part or a plurality of parts,
A means for acquiring manufacturing history information for parts constituting a product, a means for storing the acquired manufacturing history information, and data including an identification number or manufacturing history information for specifying the manufacturing history information is two-dimensionally encoded. A traceability management apparatus comprising: means; and means for directly laser-marking a two-dimensional code on a part based on a size of the two-dimensional code set according to the part.

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