JP2007115038A - Printed board quality information management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed board quality information management system, in which even after a printed board is divided to substrates of respective sizes, qualities of the respective substrates can be acquired while identifying the substrate of each size. <P>SOLUTION: Retrieval information, which is obtained by reading a two-dimensional code of a small substrate by a two-dimensional code reader 28, is individual identification information shown by the two dimensional code (the substrate kind name and production serial number of the printed board, and the individual number of the small substrate). The retrieval information is transmitted and received between a terminal device such as a PC 27 and a server 21. The server 21 receives the individual identification information as the retrieval information, retrieves quality information related to this individual identification information from a quality information database 12, and returns the retrieval result to the terminal device such as the PC 27. The terminal device such as the PC 27 receives the retrieval result and displays the retrieval result. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a printed circuit board quality information management system for managing the quality of divided printed circuit boards.

  Conventionally, printed circuit boards are inspected one by one. However, since the printed circuit boards are not identified one by one, a defective board cannot be specified based on the printed circuit board inspection data. Moreover, since the inspection data in each process is not linked and managed, quality analysis of the entire line could not be performed. Furthermore, when making a decision to stop production, an operator must refer to the data of a large number of inspection machines and make a comprehensive decision, and the decision to stop production is highly dependent on the ability of the worker. .

Therefore, a barcode indicating the individual identification number is attached to each printed circuit board, and in each step, the printed circuit board individual identification number is obtained by reading the printed circuit board barcode, and the inspection result of the printed circuit board is obtained. Counting together with identification numbers, grasping the process where defects occurred for each printed circuit board, processing the inspection results in each process with a host computer, identifying the process where defects occurred, and managing quality information for the entire line There has been proposed a quality control method for component mounting (see Patent Document 1).
JP-A-5-225202 (second page, FIG. 2)

  However, in the board mounting process of printed boards, printed boards having the same shape are often produced as much as possible in order to improve efficiency. In the case of a small-sized board, a printed board before being divided into a plurality of small-sized boards is formed, and each small-sized board is mounted in the board mounting process of this printed board. After completion, the printed circuit board is divided into substrates of different sizes.

  In this case, even if an individual identification number is assigned to a printed circuit board as in Patent Document 1, if the printed circuit board is divided into substrates of various sizes, a substrate having no individual identification number is generated. Becomes impossible.

  For this reason, for example, after an indistinguishable board is built into the product and put on the market, it is naturally impossible to grasp what quality history the board had even if a failure occurred. It is also impossible to analyze the trend of substrate quality. Therefore, improvement of the tendency of the substrate quality cannot be performed, and the same defect will be generated in the future.

  Therefore, the present invention has been made in view of the above-described conventional problems, and even after dividing a printed circuit board into substrates of each size, it is possible to identify each size substrate and grasp each quality. An object of the present invention is to provide a printed circuit board quality information management system.

  In order to solve the above-mentioned problems, the present invention provides a printed circuit board quality information management system for managing the quality of a printed circuit board to be divided, obtained by dividing the printed circuit board by the product type name, the live sequence number, and the printed circuit board. A production plan storage unit that stores at least a production plan that indicates the number of small boards to be obtained, and obtains a production plan from the production plan storage unit, and each small board obtained by dividing the printed circuit board based on the production plan An identification information generating unit that generates identification information and assigns the individual identification information to each small board; and an individual identification information acquisition unit that acquires the individual identification information of the small board in the inspection process of the printed circuit board mounting process; , An inspection result acquisition unit for acquiring an inspection result of a small board in the inspection process of the printed board mounting process, and a small group that has fallen from the printed board mounting process Repair information input unit for inputting the individual identification information and the repair information indicating the repair content, the small board individual identification information acquired by the individual identification information acquisition unit, and the small board inspection acquired by the inspection result acquisition unit A result, a quality information storage unit that stores the individual identification information and repair contents of the small board inputted by the repair information input unit, a management unit that manages the production plan storage unit and the quality information storage unit, and the quality A search information input unit for inputting search information for searching the information storage unit, and a search result or repair contents of the small board from the quality information storage unit based on the search information input by the search information input unit And a processing unit that outputs the inspection result or repair details of the small board retrieved by the processing unit.

  In the present invention, the processing unit obtains a production result based on the inspection result or repair content of the small board in the quality information storage unit.

  According to the present invention as described above, individual identification information of each small board obtained by dividing the printed board is generated, and the individual identification information is given to each small board. Then, in the inspection process of the printed circuit board mounting process, the inspection result of the small board is acquired together with the individual identification information, and the repair contents of the small board that has dropped the line are acquired together with the individual identification information. The inspection result of these small boards The individual identification information, the repair contents of the small board, and the individual identification information are stored in the quality information storage unit. Therefore, it is possible to input the search information and search the inspection result or repair contents of the small board from the quality information storage unit based on the search information. It is also possible to output. For example, after a small board is incorporated into a product and put on the market, even if a failure occurs, the individual identification information of the small board can be acquired, and the individual identification information of the small board is input as search information. Then, it is possible to search and output the inspection result or repair contents of the small substrate. For this reason, it is possible to improve the tendency of the substrate quality by performing a trend analysis of the substrate quality and the like, and to prevent the occurrence of similar defects in the future.

  It is also possible for the processing unit to obtain a production result based on the inspection result or repair content of the small board in the quality information storage unit.

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

  FIG. 1 is a functional block diagram showing an embodiment of a printed circuit board quality information management system of the present invention. The system of this embodiment is applied to a printed circuit board mounting process before being divided into a plurality of small boards, and generates and manages quality information and production results for each small board. A printed circuit board is divided | segmented into each small board | substrate after completion | finish of a printed circuit board mounting process.

  In the system of this embodiment, the management unit 1 manages the production plan database 11, the quality information database 12, and the production performance database 13, and writes and reads data in and from these databases.

  FIG. 2 illustrates a production plan in the production plan database 11. This production plan stores, for each board type name indicating a printed circuit board, a serial number assigned continuously to the printed circuit board and a number of board divisions that are the number of small boards obtained by dividing the printed circuit board. It is a thing. FIG. 3 illustrates the quality information in the quality information database 12. This quality information includes, for each board type name indicating a printed circuit board, a live number assigned continuously to the printed circuit board, an individual number indicating one small board obtained by dividing the printed circuit board, and an inspection process name of the small board The small board inspection result and the small board repair result are stored in association with each other. The individual number of each small board of the printed circuit board is set for each board type name of the printed circuit board and the live series number. That is, the same thing is set to any printed circuit board. For example, the individual number of each small board is set sequentially from “0001” for each printed board.

  The individual identification information adding unit 2 acquires a production plan as shown in FIG. 2 from the production plan database 11 through the management unit 1, and individual identification information of each small board obtained by dividing the printed circuit board based on this production plan. And the individual identification information is given to each small substrate.

  The individual identification information acquisition unit 3 acquires individual identification information of a small board to be inspected in the inspection process of the printed circuit board mounting process.

  The inspection result acquisition unit 4 acquires the inspection result of the small board to be inspected in the inspection process of the printed circuit board mounting process.

  The acquired inspection results and individual identification information of the small board are stored in the quality information database 12 through the management unit 1.

  In addition, the small board that is determined as a defective product in the inspection process of the printed board mounting process is dropped in the line, and the small board that has been dropped in the repair process is repaired. The repair information input unit 5 is used to input repair details and individual identification information of the small board in the repair process.

  Then, the repair details and individual identification information of the small board input from the repair information input unit 5 are stored in the quality information database 12 through the management unit 1.

  In this way, the quality information database 12 stores the inspection results and individual identification information of each small board, and the repair contents and individual identification information of each small board as quality information as shown in FIG.

  The processing unit 6 obtains quality information as shown in FIG. 3 from the quality information database 12 through the management unit 1, calculates a production result based on the quality information, and obtains the production result through the management unit 1. Store in the results database 13. Further, the processing unit 6 can read quality information from the quality information database 12 through the management unit 1, read production results from the production result database 13, and output the quality information and production results to the output unit 7.

  Further, when search information is input from the search information input unit 8, the search information is input to the processing unit 6 through the management unit 1. When this search information is input, the processing unit 6 searches the quality information database 12 or the production performance database 13 based on the search information, and outputs the search result to the output unit 7. For example, when small board individual identification information is input as search information, the quality information of the small board is read from the quality information database 12, and the quality information is output to the output unit 7.

  The output unit 7 prints out quality information or production results received from the processing unit 6. Quality information or production results may be displayed on the display.

  FIG. 4 is a block diagram showing a specific configuration of the printed circuit board quality information management system of the present embodiment.

  4, the server 21 corresponds to the management unit 1 (including the production plan database 11, the quality information database 12, and the production performance database 13) and the processing unit 6 in FIG. 1, and includes the production plan database 11, the quality information database 12 and the like. In addition, data is written to and read from the production record database 13, and the production record is calculated based on the quality information in the quality information database 12. Further, when the search information is input from a terminal device (not shown) such as a PC, the server 21 searches the quality information database 12 or the production record database 13 based on the search information, and the search result is sent to the output unit 7. Output.

  Further, the server 21 and the laser marker 22 correspond to the individual identification information assigning unit 2 in FIG. 1, obtain a production plan as shown in FIG. 2 from the production plan database 11, and each of the printed circuit boards based on this production plan. Individual identification information of the small board is generated, and the individual identification information is written to each of the small boards. For example, unique individual identification information is generated for each small board based on the board type name of the printed board, the live sequence number, and the number of small boards obtained by dividing the printed board. Then, a two-dimensional code indicating individual identification information of the small substrate is generated for each small substrate, and this two-dimensional code is laser-marked at a predetermined location on the small substrate.

  The individual identification information of the small board is generated on the basis of the board type name, the living series number, and the number of the small boards obtained by dividing the printed board. One small substrate in the substrate can be identified.

  Furthermore, the printing inspection machine 23, the appearance inspection machine 24, the ICT (In-circuit Tester) 25, and the CPU checker 26 correspond to the individual identification information acquisition unit 3 and the inspection result acquisition unit 4 in FIG. The small board inspection result is obtained for each small board, the two-dimensional code of the small board is read by a two-dimensional code reader (not shown), and the individual identification information indicated by the two-dimensional code is obtained. Then, the obtained small board inspection result and individual identification information are stored in the quality information database 12 in the server 21.

  The PC (personal computer) 27 and the two-dimensional code reader 28 correspond to the repair information input unit 5 of FIG. 1, and read the two-dimensional code of the small board by the two-dimensional code reader 28 and indicate the two-dimensional code. The individual identification information to be entered is input, and the repair details of the small board are input by operating the keyboard of the PC 27 or the like. Then, the inputted repair contents and individual identification information of the small board are stored in the quality information database 12 in the server 21.

  Further, the display device of the server 21 or the PC 27, or the printer 32 connected to the server 21 via a network or a printer cable corresponds to the output unit 7 in FIG.

  The printer 29, the bond applicator 30, and the mounter 31 are devices used for mounting a printed circuit board.

  In the system having such a configuration, when the printed circuit board 33 is inserted into the board mounting process, the server 21 obtains a production plan as shown in FIG. 2 from the production plan database 11 and prints based on the production plan. Individual identification information of each small substrate of the substrate is generated, and the individual identification information is output to the laser marker 22. The laser marker 22 generates a two-dimensional code indicating individual identification information for each small substrate, and laser-marks the two-dimensional code at a predetermined location on the small substrate.

  Next, the printer 29 prints solder paste or the like on each small substrate of the printed circuit board 33. Subsequently, the print inspection machine 23 inspects the printing state of solder paste or the like for each small board, and reads the two-dimensional code of the small board with a two-dimensional code reader attached to the print inspection machine 23. Then, the print inspection machine 23 transmits the inspection result of the printed state of the small board and the individual identification information indicated by the two-dimensional code to the server 21. When the server 21 receives the test result and the individual identification information, the server 21 stores them in the quality information database 12.

  Next, the bond applicator 30 applies a bond to each small substrate of the printed circuit board 33. The mounter 31 mounts components on each small board of the printed board 33. Thereafter, the appearance inspection machine 24 inspects the appearance of the substrate for each small substrate, and reads the two-dimensional code of the small substrate with the two-dimensional code reader attached to the mounter 31. Then, the appearance inspection machine 24 transmits the inspection result of the appearance of the small board and the individual identification information indicated by the two-dimensional code to the server 21. The server 21 receives the test result and the individual identification information and stores them in the quality information database 12.

  Subsequently, the ICT 25 inspects the operation of the substrate for each small substrate, and reads the two-dimensional code of the small substrate with the two-dimensional code reader attached to the ICT 25. Then, the ICT 25 transmits to the server 21 the inspection result of the small board operation and the individual identification information indicated by the two-dimensional code. The server 21 receives the test result and the individual identification information and stores them in the quality information database 12.

  Further, the CPU checker 26 also inspects the operation of the board and transmits the operation inspection result and the individual identification information to the server 21, similarly to the ICT 25. The server 21 receives the test result and the individual identification information and stores them in the quality information database 12.

  Further, in the print inspection machine 23, the appearance inspection machine 24, the ICT 25, and the CPU checker 26, when an inspection result that at least one of the small boards of the printed board 33 is defective is obtained, the printed board including the defective small board. 33 is a line drop, and the printed circuit board 33 with this line drop is moved to the repair process.

  In this repairing process, the small board which has become defective in the printed circuit board 33 is repaired, the details of the repair of the small board are input by operating the keyboard of the PC 27, etc., and the two-dimensional code reader 28 reads the two-dimensional code of the small board. The individual identification information indicated by the two-dimensional code is input, and the repair content and the individual identification information are transmitted to the server 21. The server 21 receives the repair contents and the individual identification information and stores them in the quality information database 12.

  In this way, the board mounting process proceeds, and quality information is stored in the quality information database 12 for each small board of the printed board.

  When the quality information as shown in FIG. 3 is stored in the quality information database 12 in this way, the server 21 calculates and obtains the production record based on the quality information, and stores the production record in the production record database 13. Here, the number of obtained identification numbers is calculated for each process.

  After such a board mounting process is completed, the printed circuit board 33 is divided into small boards, and the small boards are assembled to the respective products.

  On the other hand, when search information is input from a terminal device such as the PC 27 and this search information is transmitted to the server 21, the server 21 receives this search information and based on this search information, the quality information database 12 or the production performance database 13. And the search result is returned to the terminal device such as the PC 27. The terminal device such as the PC 27 receives the search result and displays the search result on the display, or transfers the search result to the printer 32 and causes the printer 32 to print out the search result.

  Therefore, even after each small board is assembled in each product, the quality information of the small board can be retrieved and output.

  In order to search for the quality information, a terminal device such as the PC 27 displays a screen 41 as shown in FIG. 5 on the display, and operates the keyboard and the two-dimensional code reader 28 etc. Enter search information. In this screen 41, as the search information, the board type name of the printed board, the living series number, and the individual number of the small board are entered in the entry field 41a. This search information is obtained by reading the two-dimensional code of the small board with the two-dimensional code reader 28, and the individual identification information (the board type name of the printed circuit board, the live number, and the small board) (Individual number) is entered in the entry field 41a. When the button 41b is operated on the screen 41 after the entry in the entry column 41a is performed, the search information is transmitted / received from the terminal device such as the PC 27 to the server 21. The server 21 receives the individual identification information as search information, searches the quality information database 12 for quality information associated with the individual identification information, and returns the search result to a terminal device such as the PC 27. The terminal device such as the PC 27 receives this search result and displays the search result in the display field 41 c of the screen 41. Here, as a search result, the inspection result and repair contents of the small board in each process in the board mounting process are displayed.

  Since small board quality information can be grasped even after the small board is assembled in this way, it is possible to analyze the trend of board quality and improve the trend of board quality. Thus, it is possible to prevent the occurrence of similar defects in the future.

  Similarly, when the production result search information is transmitted from the terminal device such as the PC 27 to the server 21, the production result database 13 is searched by the server 21, and the production result search result is returned from the server 21 to the terminal device such as the PC 27. Then, the production result search result is displayed on the screen. FIG. 6 exemplifies a display screen of the production result search result. In this screen 42, for each board type name indicating a printed board, a live number continuously given to the printed board, a printed board mounting process name, and the number of small boards are displayed in association with each other.

  Next, processing from writing individual identification information to a small board to writing inspection results to a database will be described according to the flowchart shown in FIG.

  First, before entering the process of the flowchart of FIG. 7, since various printed boards are put into the board mounting process, the size of the printed board and the writing position of the two-dimensional code on each small board are set for each type of printed board. Must be set. For this reason, in a terminal device such as the PC 27, for example, a screen 43 as shown in FIG. 8 is displayed on the display, and the type of the printed circuit board, the size of the printed circuit board, and each small size on the screen 43 are operated. The writing position of the two-dimensional code on the board is input and set. On this screen 43, the board type name of the printed circuit board 33 is entered in the entry field 43a, the vertical width and the lateral width of the printed circuit board 33 are entered in the respective entry fields 43b and 43c, and 2 for each small board of the printed circuit board 33. The vertical position and horizontal position in which the dimension code is written are entered in the entry field 43d. The vertical position and the horizontal position in which the two-dimensional code is written are the coordinate positions with reference to the origin 33a of the printed circuit board 33. At this time, it is necessary to set the position where the two-dimensional code is written to a small board where no component or the like is mounted to enable writing and reading of the two-dimensional code.

  When the button 43e is operated on the screen 43 after the size of the printed board and the writing position of each small board are entered in this way, the size of the printed board and the writing position of each small board are transferred from the terminal device such as the PC 27 to the server 21. And is stored in the server 21.

  As shown in the flowchart of FIG. 7, the server 21 acquires the production plan of FIG. 2 from the database 11, generates individual identification information of each small board of the printed circuit board based on this production plan, The identification information and the writing position of each small board set on the screen 43 in FIG. 8 are output to the laser marker 22 (step S101).

  The laser marker 22 generates a two-dimensional code indicating individual identification information for each small substrate, and laser-marks the two-dimensional code at a writing position on the small substrate (step S102). At this time, if all of the writing of the two-dimensional code to each small board of the printed circuit board has not been completed (“NO” in step S103), step S102 is continued.

  When all the writing of the two-dimensional code is completed (“YES” in step S103), the printed circuit board is moved to the printing inspection machine 23 via the printing machine 29.

  The printing inspection machine 23 reads the two-dimensional code of the small board for each small board (step S104), inspects the small board (step S105), and sends the individual identification information and the inspection result indicated by the two-dimensional code to the server 21. Send. When the server 21 receives the inspection result and the individual identification information, the server 21 stores them in the quality information database 12 (step S106).

  Next, the printed circuit board is moved to the appearance inspection machine 24 through the bond coater 30 and the mounter 31. At this time, since there is an inspection process in the appearance inspection machine 24 (“YES” in step S107), the process returns to steps S104 to S106, and in the same manner as the printing inspection machine 23, the inspection by the appearance inspection machine 24 is performed. For each small board, the individual identification information and the inspection result are transmitted to the server 21, and the inspection result and the individual identification information are stored in the quality information database 12.

  Further, steps S104 to S106 are repeated, and the ICT 25 and the CPU checker 26 sequentially perform similar inspections, and the inspection results and the individual identification information are sequentially stored in the quality information database 12.

  Then, when the inspection by the CPU checker 26 is completed, there is no next inspection process (“NO” in step S107), and thus the processing ends.

  When the substrate mounting process is thus completed, the printed circuit board 33 is divided into small boards, and the small boards are assembled into the respective products.

  Next, processing in the repair process will be described according to the flowchart shown in FIG.

  First, when a printed circuit board whose line has dropped in the circuit board mounting process is moved to the repair process, the small circuit board in which the printed circuit board 33 becomes defective is repaired in the repair process. At this time, in the PC 27, for example, a screen 44 as shown in FIG. 10 is displayed on the display, and on the screen 44, the type of the printed board, the individual number of the defective small board, and the repair contents of the defective small board are set. Here, the two-dimensional code of the small board is read by the two-dimensional code reader 28, and the board type name and individual number of the printed board indicated by the two-dimensional code are entered in the respective entry fields 44a and 44b (step S201). . Further, the repair contents of the defective small board are entered in the entry field 44c by operating the keyboard or the like (step S202).

  When the button 44d is operated on the screen 44 after the board type name of the printed board, the individual number of the defective small board, and the repair contents are entered, the board type name of the printed board, the individual number of the defective small board, The repair contents are transmitted from the PC 27 to the server 21 and stored in the server 21.

  In this embodiment, a laser marker is used as the means for giving individual identification information, and a two-dimensional code is written on the small board. However, the code may be printed on the small board and the RF-ID may be given. A medium capable of writing possible information may be used. Accordingly, it is necessary for the individual identification acquisition unit and the individual identification input unit to utilize hardware resources that can read various media.

  The present invention can be provided not only as the system configuration shown in FIG. 4 but also as a printed circuit board quality information management method and program, and can also be provided as a recording medium recording the program. With these, as with the system, the quality information of the small board can be searched and analyzed even after the printed board is divided into small boards.

It is a functional block diagram which shows one Embodiment of the printed circuit board quality information management system of this invention. It is a figure which illustrates the production plan in the production plan database in the system of FIG. It is a figure which illustrates the quality information in the quality information database in the system of FIG. It is a block diagram which shows the specific structure of the system of FIG. It is a figure which illustrates the screen of PC for the search information entry in the system of FIG. It is a figure which illustrates the production performance displayed on the screen of PC in the system of FIG. It is a flowchart which shows the process from writing of the identification information to the small board | substrate in the system of FIG. 1 to writing of the test result to a database. It is a figure which illustrates the screen of PC for the writing position setting of the individual identification information in the system of FIG. It is a flowchart which shows the process in the repair process in the system of FIG. It is a figure which illustrates the screen of PC for repair content entry in the system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Management part 2 Individual identification information provision part 3 Individual identification information acquisition part 4 Inspection result acquisition part 5 Repair information input part 6 Processing part 7 Output part 8 Search information input part 11 Production plan database 12 Quality information database 13 Production performance database 21 Server 22 Laser Marker 23 Printing Inspection Machine 24 Appearance Inspection Machine 25 ICT
26 CPU checker 27 PC
28 Two-dimensional code reader 29 Printing machine 30 Bond coating machine 31 Mounter 32 Printed circuit board

Claims (2)

In a printed circuit board quality information management system that manages the quality of divided printed circuit boards,
A production plan storage unit for storing a production plan indicating at least a board type name of the printed circuit board, a live run number, and the number of small boards obtained by dividing the printed circuit board;
Obtaining a production plan from the production plan storage unit, generating individual identification information of each small board obtained by dividing the printed circuit board based on the production plan, and assigning the individual identification information to each small board An individual identification information assigning unit;
An individual identification information acquisition unit for acquiring individual identification information of a small board in the inspection process of the printed circuit board mounting process;
An inspection result acquisition unit for acquiring an inspection result of a small board in the inspection process of the printed circuit board mounting process;
A repair information input unit that inputs repair information indicating individual identification information and repair contents of a small board that has fallen from the printed circuit board mounting process;
Individual identification information of the small board acquired by the individual identification information acquisition unit, the inspection result of the small board acquired by the inspection result acquisition unit, and the individual identification information and repair of the small substrate input by the repair information input unit A quality information storage unit for storing contents;
A management unit for managing the production plan storage unit and the quality information storage unit;
A search information input unit for inputting search information for searching the quality information storage unit;
A processing unit that searches for inspection results or repair contents of a small board from the quality information storage unit based on the search information input in the search information input unit;
A printed circuit board quality information management system comprising: an output unit that outputs inspection results or repair details of a small board searched by the processing unit.   The printed circuit board quality information management system according to claim 1, wherein the processing unit obtains a production result based on an inspection result or repair contents of a small board in the quality information storage unit.

Images