Inspection management system and inspection control device

Abstract

To provide a technique capable of comprehensively checking and setting inspection contents implemented by each inspection process in a production line of a component mounting substrate having a plurality of inspection processes.SOLUTION: An inspection management system for managing inspection contents of an inspection device provided in a production line of a component mounting substrate comprises: component inspection constrain design storage means for storing component inspection constraint design information; inspection program creation means for creating an inspection program for determining inspection items for detecting failures defined in the component inspection constrain design information related to the component and an inspection device which makes inspections related to the inspection items per component mounted on the component mounting substrate; input means for accepting input operations of a user; and image display means for displaying first and second user interface images.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a technique for inspecting products in a production line of component mounting substrates.

Background Art

[0002] In a product production line, an inspection device for the product is arranged in the middle process or the final process of the line, and detection of defects and sorting of defective products are performed. For example, in a production line of component mounting substrates, generally, a process of printing solder paste on a printed wiring board (printing process), a process of mounting components on the board on which the solder paste is printed (mounting process), and a process of heating the board after component mounting to solder the components to the board (reflow process) are included, and it is known that inspection devices are provided and inspected after each process (for example, Patent Document 1).

[0003] In the case of the example of the production line of the above component mounting substrate, the inspection performed after the reflow process is an inspection for making a final determination of good or defective as a product (hereinafter also referred to as final inspection), while the inspections performed in each of the previous intermediate processes (hereinafter also referred to as intermediate inspections) are generally performed as part of process management. That is, by discovering intermediate products (defective intermediate products) that do not meet the quality level defined in each intermediate process and preventing such defective intermediate products from flowing to the subsequent process, the production efficiency of the entire line is improved, or it is confirmed whether an abnormality has occurred in the process where the defective intermediate product is discovered, and the like are performed.

[0004] By the way, some of the inspection items performed by these inspection devices are common to multiple inspection processes. However, from the viewpoint of preventing the overlooking of "final" products in a production line having multiple inspection processes, if a defect can be detected in any of the multiple inspection processes and inspection items, it is possible to prevent overlooking. That is, for defects that can be detected in a certain inspection process (inspection item), it is not always necessary to detect them in other inspection processes (inspection items).

[0005] Furthermore, regarding components mounted on the circuit board being inspected, even if they are of the same type, depending on the mounting direction and their relationship to surrounding components, it may be necessary to change the inspection equipment or inspection parameters, or to use multiple inspection devices, in order to achieve sufficient accuracy in the inspection.

[0006] However, in conventional production lines such as those shown in Patent Document 1, although the inspection results of products ultimately determined to be defective are fed back to set the inspection content for intermediate inspections, inspection items are not comprehensively defined for each inspection device to ensure that defects that should be detected for each individual component mounted on the circuit board are not overlooked. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2021-189791 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, if the inspection content is set individually for each inspection device placed in each of the multiple inspection processes, there is a risk that a certain part (or a certain inspection item) may not be inspected by any of the inspection devices. Conversely, there is also a risk that the same inspection item may be performed redundantly by multiple inspection devices, leading to a decrease in production efficiency.

[0009] This invention has been made in view of the above circumstances, and its objective is to provide a technology that can comprehensively confirm and set the inspection content performed in each inspection step in a component mounting board production line having multiple inspection steps. [Means for solving the problem]

[0010] To achieve the above objective, the present invention employs the following configuration. That is, An inspection management system for managing the inspection content of one or more inspection devices installed in a production line for component mounting boards, A component inspection constraint design storage means stores component inspection constraint design information that defines one or more types of defects to be detected for each component type of component mounted on the component mounting board, An inspection program creation means creates an inspection program that defines, for each component mounted on the component mounting board, inspection items for detecting defects defined in the component inspection constraint design information related to the component, and an inspection device for performing the inspection related to the inspection items. Image display means for displaying a first user interface image which includes at least a list of the types of defects in the component inspection constraint design information, It has an input means that accepts user input operations, The aforementioned inspection program creation means is The input means accepts the user's selection of the type of defect to be detected and / or the inspection item capable of detecting the defect, and displays a second user interface image on the image display means for setting the selected inspection item capable of detecting the defect and / or the inspection parameters related to the inspection item. This is an inspection management system characterized by the following features.

[0011] In this specification, the terms "create" and "set" are used to include "change." With a system configured in this way, in a component mounting line with multiple inspection devices, an inspection program can be applied that comprehensively defines which inspection device will inspect which inspection items and for what defects in each component being mounted. In other words, it prevents situations where the inspection necessary to detect defects is not set on any of the inspection devices, and also prevents unnecessary duplication of inspections between multiple inspection devices. Furthermore, by selecting the type of defect that the user wishes to detect, the inspection items (and their inspection parameters) that can detect that defect are suggested by a second user interface image, so even users who do not have sufficient knowledge of inspection devices can easily set the inspection content necessary for defect detection.

[0012] Furthermore, the component inspection constraint design storage means may store component inspection constraint design information for each component type and each electrode type provided by the component of that component type, and the inspection coverage setting confirmation image may be displayed for each electrode type. In addition to defects affecting the entire component (wrong component, missing parts, reversed front / back, misaligned component, etc.), there are also defects targeting the electrodes of the component (electrode floating, electrode misalignment, non-wetting, etc.), so such a configuration allows for setting more appropriate inspections.

[0013] Furthermore, the first user interface image may include a matrix table showing a list of the types of defects in the part inspection constraint design information on one axis and a list of the inspection devices installed on the production line on the other axis, wherein the table may display the name of the inspection item that detects the defect in the column where the row or column showing the inspection device that detects the defect intersects with the row or column showing the detected defect. Such a matrix display provides good overview, and the user can more easily confirm which inspection device detects which defect and with which inspection item.

[0014] Furthermore, the inspection program creation means displays the inspection items in the image display means. Reference information related to the meter settings may be displayed. With such a configuration, even users who do not have sufficient knowledge of the inspection equipment or inspection program can rely on the displayed reference information to set the inspection items and / or inspection parameters for detecting the desired defects.

[0015] Here, the reference information may include the inspection parameters that were previously set for parts with the same part number as the part to be set.

[0016] Furthermore, the inspection management system further includes an inspection coverage information storage means that stores one or more types of inspection coverage information for each part number of the part, according to the combination of inspection devices and / or the arrangement of parts mounted on the part mounting board, which is information that defines a combination of inspection items that can detect each of the defects defined in the part inspection constraint design information and an apparatus that performs the inspection related to said inspection item. The aforementioned reference information is, Information on the inspection parameters included in different types of coverage information for parts with the same part number as the part to be configured, The information on the inspection parameters included in the coverage information for parts that are the same as the part to be configured but have different part numbers, It may include at least one of the following.

[0017] Furthermore, the inspection system may further include inspection history information storage means for storing inspection history information relating to the results of inspections performed in the past, and the reference information may include the inspection results of a simulation inspection performed based on the inspection history information, which would be the result of performing the currently set content of the inspection item.

[0018] Furthermore, the present invention relates to an inspection management device for managing the inspection content of one or more inspection devices installed in a production line for component mounting boards, Component inspection constraint design storage means for storing component inspection constraint design information that defines one or more types of defects to be detected for each component type mounted on the component mounting substrate. Inspection program creation means for creating an inspection program that defines inspection items for detecting the defects defined in the component inspection constraint design information related to each component mounted on the component mounting substrate and an inspection device for performing inspections related to the inspection items. Image display means for displaying a first user interface image including at least a list of the types of defects in the component inspection constraint design information. Input means for receiving a user's input operation, and having, The inspection program creation means, When receiving a selection of the types of defects that the user desires to detect and / or the inspection items that can detect the defects via the input means, also displays a second user interface image for setting the inspection items that can detect the selected defects and / or the inspection parameters related to the inspection items that can detect the defects. Characterized in that it can also be regarded as an inspection management device.

[0019] Also, each of the above configurations and processes can be combined with each other to constitute the present invention as long as no technical contradiction occurs.

Effects of the Invention

[0020] According to the present invention, in a production line of a component mounting substrate having a plurality of inspection processes, it is possible to comprehensively confirm and set the inspection contents implemented in each inspection process.

Brief Description of the Drawings

[0021] [Figure 1] FIG. 1 is a schematic configuration diagram of a component mounting line to which an inspection management device according to an application example is applied. [Figure 2] FIG. 2 is a functional block diagram of an inspection management device according to an application example. [Figure 3]Figure 3 shows an example of an image displayed on the image display unit of an inspection management device related to an application example. [Figure 4] Figure 4 shows an example of an image displayed on the image display unit of an inspection management device related to an application example. [Figure 5] Figure 5 shows a schematic configuration of a component mounting line to which the inspection management system according to Embodiment 1 is applied. [Figure 6] Figure 6 is a functional block diagram of the inspection management system according to Embodiment 1. [Figure 7] Figure 7 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 1. [Figure 8] Figure 8 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 1. [Figure 9] Figure 9 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 1. [Figure 10] Figure 10 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 1. [Figure 11] Figure 11 is a flowchart showing the flow of creating an inspection program in the inspection management system according to Embodiment 1. [Figure 12] Figure 12 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 1. [Figure 13] Figure 13 is a diagram showing the schematic configuration of a component mounting line to which the inspection management system according to Embodiment 2 is applied. [Figure 14] Figure 14 is a functional block diagram of the inspection management system according to Embodiment 2. [Figure 15] Figure 15 shows an example of an image displayed on the image display unit of the inspection management device according to Embodiment 2. [Figure 16] Figure 16 shows an example of an image displayed on the image display unit of the inspection management device according to a modified example of Embodiment 2. [Figure 17]Figure 17 shows an example of an image displayed on an image display unit according to another embodiment. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described below with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, and relative arrangements of the components described in the following examples are not intended to limit the scope of this invention to those specific examples.

[0023] <Examples of application> The present invention can be applied, for example, as an inspection and control device 9 as shown in Figures 1 and 2. Figure 1 is a schematic diagram showing the outline of a component mounting line for a printed circuit board according to this application example. Figure 2 is a functional block diagram of the inspection and control device 9 according to this application example. As shown in Figure 1, the component mounting line according to this application example is equipped with, in order from the upstream side, a solder printing device A1, a post-solder printing inspection device B1, a mounter A2, a post-mount inspection device B2, a reflow oven A3, and a post-reflow inspection device B3.

[0024] Solder printing device A1 is a device for printing solder on electrode parts on a printed circuit board, mounter A2 is a device for placing electronic components to be mounted on the board onto the solder paste, and reflow oven A3 is a heating device for soldering electronic components onto the board.

[0025] Furthermore, each inspection device B1, B2, and B3 inspects the condition of the substrate at the exit of each process, and checks for defects or other issues. The system automatically detects potential defects. In the following, inspection by inspection device B1 is referred to as post-print inspection, inspection by inspection device B2 as post-mount inspection, and inspection by inspection device B3 as post-reflow inspection.

[0026] The manufacturing equipment A1, A2, A3 and inspection equipment B1, B2, B3 described above are connected to the inspection management device 9 via a network such as a LAN. The inspection management device 9 is composed of a general-purpose computer system equipped with a CPU (Central Processing Unit), main memory such as RAM (Random Access Memory), auxiliary storage (HDD, flash memory, etc.), input devices (keyboard, mouse, controller, touch panel, etc.), output devices (display, printer, speaker, etc.), and communication means (wired or wireless). The inspection management device 9 can be used as a so-called teaching terminal and can create (including modify; the same applies hereinafter) inspection programs that define the content of the inspections performed by each inspection equipment B1, B2, B3. In addition, it is also used for tasks such as registering and setting (including modifying; the same applies hereinafter) various information stored in the memory unit 92, which will be described later.

[0027] Furthermore, as shown in Figure 2, the inspection management device 9 has a control unit 91, a storage unit 92, an input unit 93, and an image display unit 94 (for example, a liquid crystal display) as functional units. The control unit 91 further includes functional modules such as a UI (User Interface) control unit 911 and an inspection content setting unit 912. Each functional module may be implemented, for example, by the CPU reading and executing a program stored in a storage device.

[0028] The memory unit 92 includes a component inspection constraint design memory unit 921, an inspection coverage information memory unit 922, and an inspection program memory unit 924, and stores various types of data.

[0029] The component inspection constraint design storage unit 921 is a database that stores component inspection constraint design information that defines one or more types of defects to be detected for each component type of component mounted on a component mounting board.

[0030] The inspection coverage information storage unit 922 is a database that stores one or more sets of inspection coverage information, which is information on combinations of inspection items (and inspection devices that perform inspections related to said inspection items) that can detect each defect in the component inspection constraint design information, for each component part number and for each combination of inspection devices installed on the component mounting line.

[0031] The types of inspections (inspection items) that can be performed vary depending on the inspection device used to detect defects in each component. Furthermore, it is sometimes possible for multiple different inspection devices to perform the same type of inspection (inspection item) that can detect a particular defect. Therefore, in the inspection management system described in this application example, the inspection coverage information—which inspection items are performed on which inspection device for each component part number—is defined and stored in advance. Then, when creating the inspection program described later, by referring to this inspection coverage information, it becomes possible to create an inspection program that prevents defects from being overlooked and avoids duplicate inspections between inspection devices.

[0032] Furthermore, the inspection program storage unit 924 is a database that stores programs created by the inspection program creation means described later.

[0033] The UI control unit 911 accepts user input by displaying images related to the confirmation and setting of the inspection program on the image display unit 94, and works in cooperation with the inspection content setting unit 912 to execute processing according to the input. Figure 3 shows an example of an image created by the UI control unit 911 and displayed on the image display unit 94. An example of an inspection coverage setting confirmation image that also serves as a user interface is shown. As shown in Figure 3, the inspection coverage setting confirmation image for this application example displays a list of which inspection devices installed on the component mounting line will detect each defect in the component inspection constraint design information, with one component part number as the unit.

[0034] In the inspection coverage setting confirmation image shown in Figure 3, for the "missing parts" defect type, no inspection item for detecting it is set in any of the inspection devices. Therefore, a "!" mark is displayed next to the "missing parts" defect type to indicate this. If the user wishes to set an inspection item (and its inspection parameter) to detect the "missing parts" defect type, they select the name of the defect type by operating the input unit 93. Then, an image showing inspection items that can detect the "missing parts" defect is displayed. This image is shown in Figure 4. In Figure 4, all columns in the row related to the missing parts defect type are shaded, and "missing parts" is displayed in the columns for the post-mount inspection device and the post-reflow inspection device as the name of an inspection item that can detect missing parts. By selecting one of these inspection item names, the user can set an inspection item (and its inspection parameter) that can detect missing parts defects in any of the inspection devices. In this application example, the image shown in Figure 3 corresponds to the first user interface image according to the present invention, and the image shown in Figure 4 corresponds to the second user interface image according to the present invention.

[0035] The inspection content setting unit 912 reads information necessary for the confirmation and setting of the inspection program (such as component inspection constraint design information and inspection coverage information) from the storage unit 92 and provides it to the UI control unit 911. It also creates an inspection program (new setting, modification) based on information input by the user. Specifically, it presents the user with component inspection constraint design information and inspection coverage information (including inspection items and inspection parameters) via a user interface such as the inspection coverage setting confirmation image, and creates an inspection program by accepting new inputs and modifications of each piece of information. In this application example, the UI control unit 911 and the inspection content setting unit 912 correspond to the inspection program creation means.

[0036] Furthermore, the inspection content setting unit 912 may also create (newly set or modify) component inspection constraint design information, inspection coverage information, etc., during the process of creating the inspection program. The created inspection program is stored in the inspection program storage unit 924, the component inspection constraint design information is stored in the component inspection constraint design storage unit 921, and the inspection coverage information is stored in the inspection coverage information storage unit 922.

[0037] According to the inspection management device described in the above application example, the types of defects to be detected for each component type are comprehensively defined in the component inspection constraint design information, ensuring that no defects are missed. Furthermore, based on the inspection coverage information predetermined for each component part number, appropriate inspection items can be selected to detect defects for each component. In addition, by defining the inspection items that can be performed by each inspection device and the inspection parameters corresponding to the defects detected in those inspection items, and by providing an inspection coverage setting confirmation image according to the actual line configuration, inspection responsibilities can be set for each inspection device without omissions or unnecessary duplication. Moreover, by selecting the type of defect that the user wishes to detect from the inspection coverage setting confirmation image, the inspection items that can detect that defect are presented. Therefore, even users who do not have sufficient knowledge of inspection devices can easily set the inspection content necessary for defect detection. As a result, in a component mounting board production line with multiple inspection processes, the inspection content performed in each inspection process can be comprehensively confirmed and set for each component mounted on the board, and an appropriate inspection program can be created.

[0038] In the above application examples, we have described an example in which the present invention is applied as an inspection and management device, but the present invention can also be applied to other forms. The following describes how to implement the present invention. Let's explain the examples of form in more detail.

[0039] <Embodiment 1> (System Configuration) Figure 5 is a schematic diagram showing an example of the configuration of a component mounting line for a printed circuit board to which the inspection management system 1 according to this embodiment is applied. The component mounting line mainly consists of three processes: solder printing, component mounting, and reflow (solder welding). The inspection management system 1 according to this embodiment consists of an inspection management device 10 and a data server 20.

[0040] As shown in Figure 5, the component mounting line is equipped with the following manufacturing equipment, in order from upstream: a solder printing machine X1, a mounter X2, and a reflow oven X3. The solder printing machine X1 is a device that prints paste-like solder onto electrode areas (called lands) on a printed circuit board using screen printing. The mounter X2 is a device that picks up electronic components to be mounted on the board and places them on the solder paste at the corresponding locations; it is also called a chip mounter. The reflow oven X3 is a heating device that heats and melts the solder paste, then cools it to solder the electronic components onto the board. If there are many types or numbers of electronic components to be mounted on the board, multiple mounters X2 may be provided on the component mounting line.

[0041] Furthermore, the component mounting line is equipped with inspection devices Y1, Y2, Y3, and Y4 that inspect the condition of the circuit board at the exit of each process—solder printing, component mounting, and reflow—and automatically detect defects or potential defects. In addition to automatically sorting good and defective products, each inspection device also has a function to feed back the inspection results and their analysis results into the operation of each manufacturing device (for example, by changing the mounting program).

[0042] The solder printing inspection device Y1 is a device for inspecting the printing condition of solder paste on a substrate discharged from the solder printing device X1. The solder printing inspection device Y1 measures the solder paste printed on the substrate in two or three dimensions and determines whether various inspection items are within normal values ​​(acceptable range) based on the measurement results. Inspection items include, for example, the volume, area, height, positional displacement, and shape of the solder. For two-dimensional measurement of the solder paste, an image sensor (camera) can be used, and for three-dimensional measurement, a laser displacement meter, phase shift method, spatial coding method, or light section method can be used.

[0043] The post-mount inspection device Y2 is used to inspect the placement of electronic components on a circuit board that has been removed from the mounter X2. The post-mount inspection device Y2 measures the components (the component body, electrodes, or other parts of the component) placed on the solder paste in two or three dimensions, and determines whether various inspection items are within the normal range (acceptable range) based on the measurement results. Inspection items include, for example, misalignment of components, angle (rotation) misalignment, missing components (components not placed), incorrect components (different components placed), incorrect polarity (different polarity of electrodes on the component side and the circuit board side), inversion (components placed upside down), and component height. Similar to solder printing inspection, an image sensor (camera) can be used for two-dimensional measurement of electronic components, and a laser displacement meter, phase shift method, spatial coding method, or light section method can be used for three-dimensional measurement.

[0044] The visual inspection device Y3 is used to inspect the quality of soldering on substrates that have been removed from the reflow oven X3. The visual inspection device Y3 measures the soldered areas after reflow in two or three dimensions and determines whether various inspection items are within the normal range (acceptable range) based on the measurement results. Inspection items include the same items as component inspection, as well as the quality of the solder fillet shape. Solder shape measurement methods include the aforementioned laser displacement meter, phase shift method, spatial coding method, and light section method, as well as the so-called color highlight method (where R, G, and B illumination are applied to the solder surface at different incidence angles, and the reflected light of each color is captured by a zenith camera). A method can be used to detect the 3D shape as 2D hue information.

[0045] The X-ray inspection device Y4 is a device for inspecting the soldering condition of a circuit board using X-ray images. For example, in the case of package components such as BGA (Ball Grid Array) and CSP (Chip Size Package), and multilayer circuit boards, the solder joints are hidden beneath the components or circuit board, so the visual inspection device Y3 (i.e., visual images) cannot inspect the solder condition. The X-ray inspection device Y4 is a device that complements this weakness of visual inspection. Inspection items of the X-ray inspection device Y4 include, for example, component misalignment, solder height, solder volume, solder ball diameter, back fillet length, and the quality of the solder joint. Note that either X-ray transmission images or CT (Computed Tomography) images may be used as the X-ray images. In the following description, the visual inspection device Y3 and the X-ray inspection device Y4 may be collectively referred to as the post-reflow inspection device.

[0046] Furthermore, each of the inspection devices Y1, Y2, Y3, and Y4 according to this embodiment may be equipped with a display device for visually confirming the product to be inspected, and such visual display devices may be provided on the component mounting line as terminals separate from each inspection device (i.e., as visual inspection devices).

[0047] In the following, the inspection performed by the solder printing inspection device Y1 may be referred to as the post-printing inspection, the inspection performed by the component inspection device Y2 as the post-mounting inspection, and the inspection performed by the visual inspection device Y3 and the X-ray inspection device Y4 as the post-reflow inspection.

[0048] (Inspection and control device) The manufacturing equipment X1, X2, X3 and inspection equipment Y1, Y2, Y3, Y4 described above are connected to the inspection management device 10 and the data server 20 via a network (LAN). The inspection management device 10 is a terminal responsible for managing and controlling the manufacturing equipment X1, X2, X3 and the inspection equipment Y1, Y2, Y3, Y4. Although not shown in the diagram, it consists of a general-purpose computer system equipped with a CPU, main memory such as RAM, auxiliary storage (HDD, flash memory, etc.), input devices (keyboard, mouse, controller, touch panel, etc.), output devices (display, printer, speaker, etc.), and communication means (wired or wireless). Each functional unit of the inspection management device 10, which will be described later, is realized by the CPU reading and executing programs stored in the auxiliary storage.

[0049] The inspection management device 10 may be composed of one computer or multiple computers. Alternatively, all or part of the functions of the inspection management device 10 may be implemented in a computer built into any of the manufacturing devices X1, X2, X3 or inspection devices Y1, Y2, Y3, Y4. Alternatively, some of the functions of the inspection management device 10 may be implemented by a server on a network (such as a cloud server).

[0050] (Data Server) The data server 20 is a terminal with large-capacity storage, and various types of data are stored there, as will be described later. It transmits information to the inspection management device 10, manufacturing devices X1, X2, X3, and inspection devices Y1, Y2, Y3, Y4, and conversely, receives information from these devices.

[0051] (Functional block) Figure 6 shows a functional block diagram of the inspection management device 10 and data server 20 of this embodiment. As shown in Figure 6, the data server 20 is composed of a parts inspection constraint design storage unit 211, an inspection coverage information storage unit 212, a part number group storage unit 213, an inspection program storage unit 214, and an inspection history information storage unit 215.

[0052] The inspection coverage information is the same as that described in the application examples. However, in addition to the inspection coverage information (first variation) that defines a standard combination of inspection items and inspection devices, the inspection coverage information storage unit 212 in this embodiment also stores inspection coverage information for other variations if there are different combinations of inspection items and inspection devices (other variations).

[0053] This embodiment describes an inspection management system applicable to a component mounting line equipped with inspection devices Y1, Y2, Y3, and Y4, but the combination of inspection devices is not limited to this. For example, there may be only one inspection device after reflow, as in the example application, and line configurations that do not perform post-printing inspections are also conceivable. Furthermore, depending on the characteristics and arrangement of the mounted components, certain inspection devices and inspection items may not be able to properly inspect for defects (for example, it may not be appropriate to include component height as an inspection item for components with highly reflective surfaces). Thus, it is desirable to define multiple variations of inspection item and inspection device combinations necessary to detect defects defined in the component inspection constraint design information, depending on various combinations of inspection devices and the characteristics and arrangement of components.

[0054] The part number group storage unit 213 stores part number group information, which groups together multiple part numbers to which the same inspection coverage information applies. The inspection coverage information may be set and changed on a part number group basis. The inspection history information storage unit 215 is a database that stores inspection history information (image data, three-dimensional shape data, final pass / fail judgment results, etc.) related to inspection results (image data, three-dimensional shape data, final pass / fail judgment results, etc.) that were previously performed by each inspection device Y1, Y2, Y3, and Y4. Note that the part inspection constraint design storage unit 211 and the inspection program storage unit 214 are the same as those described in the application example, so a further explanation is omitted.

[0055] In this embodiment, the parts inspection constraint design storage unit 211, the inspection coverage information storage unit 212, the part number group storage unit 213, the inspection program storage unit 214, and the inspection history information storage unit 215 function as so-called relational databases that can mutually refer to and link the stored information. That is, the inspection program described later may define the content of the inspections performed by each inspection device by referring to the information stored in the parts inspection constraint design storage unit 211 and the inspection coverage information storage unit 212, without storing information on the type of defect related to the parts inspection constraint design information or information on inspection items (and their inspection parameters) related to the inspection coverage information.

[0056] Furthermore, as shown in Figure 6, the inspection management device 10 has a control unit 110, an input unit 120, and an image display unit 130. The control unit 110 further includes a data reading unit 111, a UI control unit 112, an inspection content setting unit 113, a simulation execution unit 114, and an inspection coverage determination unit 115 as functional modules.

[0057] The input unit 120 is an input means for the inspection management device 10 and is typically composed of a keyboard, mouse, controller, touch panel, etc. The image display unit 130 is a means for outputting user interface images such as the inspection coverage setting confirmation image described later, and other various information, and is typically composed of a display device such as a liquid crystal display.

[0058] Next, we will describe the various functional modules provided by the control unit 110. The data reading unit 111 reads various information related to the confirmation and setting process of the inspection program from the data server 20 and provides it to the UI control unit 112, the inspection content setting unit 113, the simulation execution unit 114, and the inspection coverage determination unit 115.

[0059] The UI control unit 112 accepts user input by displaying images related to the confirmation and setting of the inspection program, which will be described later, on the image display unit 130, and works in cooperation with the inspection content setting unit 113 to execute processing according to the input. That is, the images created by the UI control unit 112 and displayed on the image display unit 130 include UI images that also serve as the user interface. Figure 7 shows an example of such an image, which is an inspection coverage setting confirmation image. As shown in Figure 7, the inspection coverage setting confirmation image according to this embodiment displays a list of which inspection devices installed on the component mounting line will detect each defect in the component inspection constraint design information, with one component part number as one unit. More specifically, it includes a matrix table showing a list of defect types in the component inspection constraint design information on one axis and a list of each inspection device installed on the component mounting line on the other axis, and in the matrix table, the name of the inspection item that detects the defect is displayed in the column where the row or column showing the inspection device that detects the defect intersects with the row or column showing the detected defect.

[0060] The inspection content setting unit 113 reads information necessary for processing the confirmation and setting of the inspection program (such as part inspection constraint design information, inspection coverage information, and part number group information) from the data server 20 and provides it to the UI control unit 112. It also creates an inspection program (new setting, modification) based on information entered by the user. Specifically, it presents the user with part inspection constraint design information and inspection coverage information (including inspection items and inspection parameters) via a user interface such as the inspection coverage setting confirmation image, and creates an inspection program by accepting new inputs and modifications of each piece of information.

[0061] Furthermore, the inspection content setting unit 113 may also create (newly set or modify) component inspection constraint design information, inspection coverage information, part number group information, etc., during the process of creating the inspection program. The created inspection program is stored in the inspection program storage unit 214, the component inspection constraint design information in the component inspection constraint design storage unit 211, the inspection coverage information in the inspection coverage information storage unit 212, and the part number group information in the part number group storage unit 213.

[0062] The simulation execution unit 114 performs a simulation inspection based on past inspection information (image data, three-dimensional shape data) read from the inspection history information storage unit 215, using the currently set inspection content (inspection items and inspection parameters) in the list of inspection coverage setting confirmation images. If the simulation results indicate that defects will be missed or over-examined with the currently set inspection content in light of past inspection results, this information is provided to the UI control unit 112. Upon receiving this information, the UI control unit 112 displays a notification in the inspection coverage setting confirmation image indicating that defects will be missed or over-examined.

[0063] Figure 8 shows an example of an inspection coverage setting confirmation image that indicates missed or over-examined defects may occur with the current inspection settings. As shown in Figure 8, if missed or over-examined defects occur with the currently set inspection settings, the name of the inspection item in which the missed or over-examined defect occurs will be highlighted for identification. In the example in Figure 8, it is shown that missed defects occur in the "part mismatch (height)" inspection item of the post-mount inspection performed by inspection device Y2, and that over-examined defects occur in the "void (area)" inspection item of the X-ray inspection performed by inspection device Y4.

[0064] The inspection coverage determination unit 115 determines, for each part, whether the currently set inspection coverage information has inspection items to detect all types of defects in the part inspection constraint design information. If, as a result of the determination, no inspection items are set to detect any of the defects, it provides information to that effect to the UI control unit 112. Upon receiving the information, the UI control unit 112 displays an alert in the inspection coverage setting confirmation image indicating that there are types of defects for which no inspection items are set. In this embodiment, as shown in Figure 8... The "!" mark displayed next to "Out of Stock" in the list of defective items corresponds to this type of alert.

[0065] Here, if the user wishes to set inspection items (and their inspection parameters) to detect "missing parts" defects, they select the name portion of the defect type by operating the input unit 120. Then, the UI control unit 112 displays an image on the image display unit 130 showing inspection items that can detect "missing parts" defects. When the user selects an inspection item to detect "missing parts" defects based on the image, the UI control unit 112 further displays an inspection parameter setting image on the image display unit 130 for setting the inspection parameters for that inspection item. Figure 9 shows an example of an inspection parameter setting image for setting the inspection parameters of an inspection item to detect "missing parts" performed by the post-mount inspection device. The user can easily set the inspection parameters of an inspection item to detect missing parts based on an inspection parameter setting image like the one shown in Figure 9. In this embodiment, the inspection coverage setting confirmation images shown in Figures 7 and 8 correspond to the first user interface image according to the present invention. Also, the inspection parameter setting image shown in Figure 9 corresponds to the second user interface image according to the present invention.

[0066] Furthermore, the UI control unit 112 can display reference information related to the setting of inspection parameters on the image display unit 130 along with the inspection parameter setting image. Figure 10 shows an example of an image in which such reference information is displayed along with the inspection parameter setting image. In the example in Figure 10, the reference information displays inspection parameters from a variation of inspection coverage information different from the currently set variation of inspection coverage information for a part with the same part number as the currently set target part. By displaying such reference information, even users who do not have sufficient knowledge of inspection equipment or inspection programs can set the inspection content by relying on the reference information.

[0067] Note that the reference information is not limited to those listed above. For example, if the same inspection items have been set in the past for a part with the same part number as the part being set, the inspection parameters from that time may be used as reference information. Also, if there is inspection coverage information for the same type of part with a different part number than the part being set, the inspection parameters included in that inspection coverage information may be used as reference information. Furthermore, after accepting the input of temporary parameters, the simulation execution unit 114 may perform a simulation and display the results of the simulation (including, for example, the accuracy rate) as reference information.

[0068] (Process flow for creating inspection programs) Next, a method for creating an inspection program using the inspection management system 1 according to this embodiment will be described based on the flowchart in Figure 11. An inspection program is newly created, for example, when manufacturing a component mounting board with a new configuration. First, the UI control unit 112 displays a UI image (not shown) for creating a new program on the image display unit 130, and the user performs the process of assigning components on the circuit of the board by component part number via the input unit 120 based on this (S101). Next, the inspection coverage determination unit 115 determines whether or not there is inspection coverage according to the design of the circuit to which the component part number is assigned and the configuration of the line to be managed (combination of inspection devices) (S102). Specifically, for example, the determination is made by checking whether or not component inspection constraint design information corresponding to each component, and inspection coverage information that defines the combination of the type of defect in the component inspection constraint design information and inspection items (and inspection devices that perform the inspection) that can detect all of the defects are stored in the data server 20.

[0069] If it is determined in step S102 that there is sufficient inspection coverage according to the newly assigned circuit design, the process proceeds to step S106. On the other hand, if it is determined that there is insufficient inspection coverage (for example, if there are defective types for which no inspection items have been set), the UI control unit 112 An alert to that effect is displayed on the image display unit 130. Upon receiving such an alert, the user sets the necessary inspection items (inspection parameters). Specifically, the user inputs information related to part inspection constraint design information, inspection coverage information (including variation settings), etc., via the input unit 120, according to the UI image (not shown) provided by the UI control unit 112. The input information is sent to the data server 20, which updates the information in the databases of the part inspection constraint design storage unit 211, the inspection coverage information storage unit 212, and the part number group storage unit 213 (S103, S104, S105). Note that it is not always necessary to perform all of the processes from steps S103 to S105; for example, the setting of part inspection constraint design information in step S103 may be omitted.

[0070] After processing from steps S103 to S105, when information that satisfies the inspection coverage requirements according to the newly assigned circuit design is added to the component inspection constraint design storage unit 211, the inspection coverage information storage unit 212, and the part number group storage unit 213, the process proceeds to step S106. In step S106, the user selects inspection coverage information suitable for a line configuration that may produce the newly registered component mounting board, according to a UI image (not shown) provided by the UI control unit 112 (S106).

[0071] Next, the user determines whether or not defects can be properly detected (i.e., whether an appropriate inspection can be performed) for each inspection item using the inspection coverage information selected in step S106 (step S107). Here, by referring to an inspection coverage setting confirmation image, such as the one shown in Figure 8, for example, it is possible to determine whether or not an appropriate inspection can be performed by checking whether or not there are any inspection items that may be missed or over-examined.

[0072] If, in step S107, it is determined that an appropriate inspection cannot be performed, the user modifies the inspection items (including inspection parameters) (S108). Here, the UI control unit 112 displays a UI image for modifying the inspection content information, and the user can modify the inspection items by making inputs according to this. Specifically, for example, when an inspection item highlighted in the inspection coverage setting confirmation image shown in Figure 8 is selected, another UI image for setting the parameters of that inspection item should pop up and be displayed. Figure 12 shows an example of a state where such a UI image for setting inspection parameters is displayed in a pop-up.

[0073] After the inspection items are modified in step S108, the process returns to step S107 and repeats until appropriate inspections can be performed. On the other hand, if it is determined in step S107 that all types of defects can be properly detected, it is set as a new inspection program for the new component mounting board and saved in the inspection program storage unit 214 (S109). After the process in step S109 is executed, the inspection program creation flow is temporarily terminated.

[0074] The inspection program created by the processing in steps S101 to S109 comprehensively defines the inspection content for detecting defects in each component in each inspection device, by referring to component inspection constraint design information, inspection coverage information, and inspection content information. In other words, in this embodiment, the control unit 110 corresponds to the inspection program creation means of the present invention, the processing in steps S104 and S105 corresponds to the inspection assignment setting step of the present invention, and the processing in steps S106 to S108 corresponds to the inspection program creation step.

[0075] According to the inspection management system 1 having the above configuration, when the user creates an inspection program for a component mounting line equipped with multiple inspection devices, the program should cover all types of defects to be detected across multiple inspection devices on a part number basis, and should be performed by each inspection device. This allows users to configure the content of the tests. Furthermore, the program content configured in this way can be easily viewed at a glance, and if the test coverage is not met or if the current test parameters are inappropriate in light of past test history, this will be indicated on the UI image, thus more reliably preventing errors in setting the test content information.

[0076] <Embodiment 2> Next, other embodiments of the present invention will be described based on Figures 13 and 14. Figure 13 is a diagram showing a component mounting line to which the inspection management system 2 according to this embodiment is applied, and Figure 14 is a functional block diagram of the inspection management system 2. As shown in Figure 13, in this embodiment, the arrangement of manufacturing equipment X1, X2, X3 and inspection equipment Y11, Y12, Y13, Y14 in the component mounting board production line is the same as in Embodiment 1. In addition, the inspection management device 11 and data server 21 of this embodiment share many components with the inspection management device 10 and data server 20 of Embodiment 1. For this reason, components common to Embodiment 1 are denoted by the same reference numerals, and detailed descriptions are omitted.

[0077] The inspection devices Y11, Y12, Y13, and Y14 according to this embodiment have the same basic configuration as those of Embodiment 1, but are capable of performing a simulation inspection using the same inspection data as the actual inspection in parallel with the actual pass / fail judgment inspection of the component mounting board to be inspected. More specifically, each inspection device performs a first inspection based on a first inspection program for actual pass / fail judgment inspection and a second inspection based on a second inspection program for simulation in parallel with one component mounting board to be inspected. The results of the first and second inspections are then transmitted to the data server 21.

[0078] As shown in Figure 14, the data server 21 of the inspection management system 2 according to this embodiment differs from the data server 20 of Embodiment 1 in that it lacks an inspection history information storage unit 215 and instead includes a first inspection result storage unit 216, a second inspection result storage unit 217, and an actual defect data storage unit 218.

[0079] The first inspection result storage unit 216 and the second inspection result storage unit 217 are databases that store the result data of the first and second inspections for each component mounting board that has been inspected. The actual defect data storage unit 218 is a database that stores data of component mounting boards that have been determined to be defective through visual inspection and contact inspection (not shown). In other words, in the component mounting line of this embodiment, in addition to inspections by inspection devices Y11, Y12, Y13, and Y14, inspections such as visual inspections are performed to determine whether or not a board is actually defective, and the data of the inspection results is transmitted to and stored in the data server 21.

[0080] The control unit 310 of the inspection management device 11 differs from the control unit 110 in the inspection management device 10 of Embodiment 1 in that it has an optimal setting determination unit 116. The optimal setting determination unit 116 determines which of the first and second inspection programs is more suitable for inspection, based on the results of the first inspection stored in the first inspection result storage unit 216, the results of the second inspection stored in the second inspection result storage unit 217, and the actual pass / fail judgment results stored in the actual defect data storage unit 218. More specifically, it compares the inspection results of the first and second inspections with the actual defect data to determine which allows for inspection with fewer missed or over-examined items (i.e., which has a higher accuracy rate). Here, the accuracy rate is used as the basis for determining which inspection program is appropriate, but the basis for the determination is not limited to the accuracy rate alone. For example, indicators such as the distribution of measured values ​​or the margin for pass / fail judgment can also be used.

[0081] Furthermore, the UI control unit 112 according to this embodiment displays a simulation result display image on the image display unit 130, which shows a comparison between the results of the first inspection and the results of the second inspection. An example of such a simulation result display image is shown in Figure 15. As shown in Figure 15, the simulation The simulation results display image shows the content of each of the first and second test programs, and compares the accuracy rates of the current test results from the first program and the simulation test results from the second program. The ranking of the accuracy rates between the two test programs is also displayed.

[0082] In this embodiment, the first inspection program and the second inspection program have different revisions of the "AI inspection" inspection item for detecting "missing parts" defects, and it can be seen that the second inspection program is a more appropriate inspection program that can perform inspections with a higher accuracy rate.

[0083] As described above, the inspection management system 2 according to this embodiment allows for the simultaneous execution of actual inspections using the current inspection program and the simultaneous execution of simulations using other inspection programs with different inspection content, thereby enabling the determination of the suitability of the other inspection programs. Therefore, when there is a need for changes to inspection settings, updates to inspection algorithms, or the adoption of new AI models, the suitability of a new inspection program reflecting these changes can be determined without replacing the current inspection program. In other words, it becomes possible to eliminate the risk of degrading the quality of inspections on products that are actually being mass-produced by setting up a new inspection program.

[0084] (modified version) In the above embodiment 2, the simulation inspection performed in each inspection device was only by the second inspection program, but it is also possible to perform multiple simulation inspections in parallel. In this case, the data server 21 will be further equipped with a third inspection result storage unit, a fourth inspection result storage unit, and so on, each with its own database for the simulation inspections. Figure 16 shows an example of a simulation result display image when multiple simulation inspections are performed.

[0085] <Other> The above description of embodiments is merely illustrative, and the present invention is not limited to the specific forms described above. The present invention can be modified in various ways within the scope of its technical concept. For example, in the above embodiment, component inspection constraint design information was set for each component type, but component inspection constraint design information for each electrode type possessed by the component of that component type may also be defined and stored in the component inspection constraint design storage unit. In addition to defects affecting the entire component (wrong component, missing parts, reversed front / back, misaligned component, etc.), there are also defects targeting the electrodes of the component (electrode floating, electrode misalignment, non-wetting, etc.), so such a configuration would allow for the setting of more appropriate inspections. Figure 17 shows an example of an inspection coverage setting confirmation image created on an electrode type basis.

[0086] Furthermore, although the above embodiments described a component mounting line with multiple inspection devices as an example, the present invention can also be applied to a component mounting line equipped with only a single inspection device. By storing data corresponding to such a component mounting line equipped with only a single inspection device in the component inspection constraint design storage unit, inspection coverage information storage unit, part number group storage unit, and inspection program storage unit, an inspection management system that can flexibly adapt to various line configurations can be created.

[0087] Furthermore, in each of the above embodiments, the inspection coverage information storage unit and the part number group information storage unit were separate databases, but they may be combined into one by including the inspection coverage information in the part number group information.

[0088] <Note 1> An inspection management system (1) that manages the inspection content of one or more inspection devices (Y1, Y2, Y3, Y4) installed in a component mounting board production line, A component inspection constraint design storage means (211) stores component inspection constraint design information that defines one or more types of defects to be detected for each component type of component mounted on the component mounting board, An inspection program creation means (110) creates an inspection program that defines, for each component mounted on the component mounting board, an inspection item for detecting the defect defined in the component inspection constraint design information related to the component, and an inspection device for performing the inspection related to the inspection item. Image display means (130) that displays a first user interface image which includes at least a list of the types of defects in the component inspection constraint design information, It has an input means (120) that accepts user input operations, The aforementioned inspection program creation means is The input means accepts the user's selection of the type of defect to be detected and / or the inspection item capable of detecting the defect, and displays a second user interface image on the image display means for setting the selected inspection item capable of detecting the defect and / or the inspection parameters related to the inspection item. An inspection management system characterized by the following features.

[0089] <Note 2> An inspection management device (9) that manages the inspection content of one or more inspection devices (B1, B2, B3) installed in a component mounting board production line, A component inspection constraint design storage means (921) stores component inspection constraint design information that defines one or more types of defects to be detected for each component type of component mounted on the component mounting board, An inspection program creation means (91) creates an inspection program that defines, for each component mounted on the component mounting board, an inspection item for detecting the defect defined in the component inspection constraint design information related to the component, and an inspection device for performing the inspection related to the inspection item. Image display means (94) for displaying a first user interface image which includes at least a list of the types of defects in the component inspection constraint design information, It has an input means (93) that accepts user input operations, The aforementioned inspection program creation means is The input means accepts the user's selection of the type of defect to be detected and / or the inspection item capable of detecting the defect, and displays a second user interface image on the image display means for setting the selected inspection item capable of detecting the defect and / or the inspection parameters related to the inspection item. An inspection management device characterized by the following features. [Explanation of Symbols]

[0090] 1, 2... Inspection Management System A1, X1... Solder printing equipment A2, X2... Mount A3, X3... Reflow oven B1, Y1, Y11... Solder printing post-inspection device B2, Y2, Y12... Post-mount inspection device B3...Post-reflow inspection device Y3, Y13... Visual inspection device Y4, Y14...X-ray inspection equipment 9, 10, 11... Inspection and control devices 110, 310... Control Unit 92...Storage section 93, 120... Input section 94, 130...Image display section 20, 21...Data Server

Claims

1. An inspection management system for managing the inspection content of one or more inspection devices installed in a production line for component mounting boards, A component inspection constraint design storage means stores component inspection constraint design information that defines one or more types of defects to be detected for each component type indicating the type of component mounted on the component mounting board, A means for storing inspection history information related to the results of inspections conducted in the past, An inspection program creation means creates an inspection program that defines, for each of the components mounted on the component mounting board, an inspection item for detecting the defect defined in the component inspection constraint design information relating to the component type to which the component belongs, and an inspection device for performing the inspection related to the inspection item. An image display means comprising at least a list of the types of defects in the parts inspection constraint design information, the image display means comprising a matrix showing a list of the types of defects in the parts inspection constraint design information on one axis and a list of the inspection devices provided on the production line on the other axis, wherein a row or column showing the inspection device that detects the defect and a row or column showing the detected defect intersect in the matrix, and a first user interface image showing the name of the inspection item that detects the defect is displayed in the column. It has an input means that accepts user input operations, The aforementioned inspection program creation means is A second user interface image for receiving the user's selection of the type of defect to be detected and / or the inspection item capable of detecting the defect via the input means, and for setting the selected inspection item capable of detecting the defect and / or the inspection parameters related to the inspection item, The image display means displays information relating to the setting of the inspection parameters of the inspection item, including reference information that includes the inspection results of a simulation inspection when the content of the inspection item currently set based on the inspection history information is performed. An inspection management system characterized by the following features.

2. The aforementioned reference information is used for parts with the same part number as the part to be configured, and has been configured in the past for parts with the same part number. The aforementioned test parameters, The inspection management system according to claim 1, characterized in that

3. The system further includes an inspection coverage information storage means that stores one or more types of inspection coverage information for each part number of the component, according to the combination of inspection devices and / or the arrangement of components mounted on the component mounting board, which is information that defines a combination of inspection items that can detect each of the defects defined in the component inspection constraint design information and an apparatus for performing the inspection related to said inspection item. The aforementioned reference information includes the part number of the part to be configured and information on the inspection parameters included in different types of inspection coverage information for parts with the same part number. The inspection management system according to claim 1, characterized in that

4. The system further includes an inspection coverage information storage means that stores one or more types of inspection coverage information for each part number of the component, according to the combination of inspection devices and / or the arrangement of components mounted on the component mounting board, which is information that defines a combination of inspection items that can detect each of the defects defined in the component inspection constraint design information and an apparatus for performing the inspection related to said inspection item. The inspection coverage information includes the inspection parameter information for parts that are the same as the part to be configured but of the same part type but different part numbers, The inspection management system according to claim 1, characterized in that

5. An inspection management device that manages the inspection content of one or more inspection devices installed in a production line for component mounting boards, A component inspection constraint design storage means stores component inspection constraint design information that defines one or more types of defects to be detected for each component type indicating the type of component mounted on the component mounting board, A means for storing inspection history information related to the results of inspections conducted in the past, An inspection program creation means creates an inspection program that defines, for each individual component mounted on the component mounting board, an inspection item for detecting the defect defined in the component inspection constraint design information relating to the component type to which the component belongs, and an inspection device for performing the inspection related to the inspection item. An image display means comprising at least a list of the types of defects in the parts inspection constraint design information, the image display means comprising a matrix showing a list of the types of defects in the parts inspection constraint design information on one axis and a list of the inspection devices provided on the production line on the other axis, wherein a row or column showing the inspection device that detects the defect and a row or column showing the detected defect intersect in the matrix, and a first user interface image showing the name of the inspection item that detects the defect is displayed in the column. It has an input means that accepts user input operations, The aforementioned inspection program creation means is A second user interface image for receiving the user's selection of the type of defect to be detected and / or the inspection item capable of detecting the defect via the input means, and for setting the selected inspection item capable of detecting the defect and / or the inspection parameters related to the inspection item, The image display means displays information relating to the setting of the inspection parameters of the inspection item, including reference information that includes the inspection results of a simulation inspection when the content of the inspection item currently set based on the inspection history information is performed. An inspection management device characterized by the following features.

Images