WO2023189220A1 - Inspection management system and inspection management device - Google Patents

Abstract

An inspection management system for managing inspection contents of an inspection device that is provided in a production line for a component mounting board, the inspection management system comprising: a component inspection restriction design storage means that stores component inspection restriction design information; an inspection program creation means that creates an inspection program defining, for each component that is mounted to the component mounting board, an inspection item for detecting the defect defined in the component inspection restriction design information related to the component, and an inspection device that implements an inspection related to the inspection item; and an image display means that displays an inspection coverage setting confirmation image.

Description

Test management system and test management device

The present invention relates to a technology for inspecting products in a component mounting board production line.

On product production lines, product inspection equipment is placed in intermediate and final processes of the line to detect defects and sort out defective products. For example, in a production line for component mounting boards, there is generally a process of printing cream solder on a printed wiring board (printing process), a process of mounting components on the board printed with cream solder (mounting process), and a process after component mounting. It is known that the method includes a step (reflow step) of heating a board and soldering components to the board, and that an inspection device is installed and inspected after each step (for example, Patent Document 1).

In the above example of the production line for component-mounted boards, the inspection performed after the reflow process is an inspection for making the final pass/fail judgment of the product (hereinafter also referred to as final inspection). Inspections carried out in each intermediate process before that (hereinafter also referred to as intermediate inspections) are generally carried out as part of process control. In other words, by discovering intermediate products (defective intermediate products) that do not meet the quality level determined by each intermediate process and preventing such defective intermediate products from flowing to subsequent processes, we aim to improve the production efficiency of the entire line. This includes checking to see if any abnormalities have occurred in the process where the defective intermediate product was discovered.

By the way, some of the inspection items performed by these inspection devices are common to multiple inspection processes. However, from the perspective of preventing "final" products from being overlooked in a production line that has multiple inspection processes, if defects can be detected in any of the multiple inspection processes/inspection items, it is possible to prevent oversights. is possible. That is, a defect that can be detected in a certain inspection process (inspection item) does not necessarily need to be detected in another inspection process (inspection item).

In addition, for components mounted on the board to be inspected, even if the components are of the same type, the inspection equipment in charge of inspection and inspection parameters may be changed depending on the direction of mounting or the relationship with surrounding components. In some cases, it may not be possible to perform an inspection with sufficient accuracy unless multiple inspection devices are used.

However, in the conventional production line as shown in Patent Document 1, although the inspection results of products that are finally determined to be defective are fed back to set the inspection content for intermediate inspections, In order to avoid overlooking defects that should be detected for each individual component being inspected, inspection items were not comprehensively determined for each inspection device.

Japanese Patent Application Publication No. 2021-189791

However, if the inspection contents are set individually for each inspection device installed in each of multiple inspection processes, there may be a situation where a certain part (certain inspection item) is not inspected by any inspection device. There is a possibility that this may occur. On the other hand, there is also a risk that production efficiency may be reduced if settings are made such that the same inspection items are performed redundantly using a plurality of inspection devices.

The present invention was made in view of the above circumstances, and its purpose is to comprehensively confirm and set the inspection contents to be carried out in each inspection process in a component mounting board production line that has multiple inspection processes. Our goal is to provide technology that can.

In order to achieve the above object, the present invention employs the following configuration. That is,
An inspection management system that manages the inspection contents 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 of the component mounted on the component mounting board;
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 that performs the inspection related to the inspection item. an inspection program creation means for creating;
An image displaying an inspection coverage setting confirmation image that shows, in a list, which of the inspection devices installed in the production line detects each of the defects in the component inspection constraint design information for each part number of the component. a display means;
This is an inspection management system that is characterized by:

Note that in this specification, the words "creation" and "setting" are used to include changes. According to a system configured like this, in a component mounting line that has multiple inspection devices, it is possible to easily see which inspection device inspects which inspection items and which defects in each mounted component. After visual confirmation, an inspection program can be created in which inspections are comprehensively assigned to each inspection device so that no defects are overlooked. In other words, the user can easily check whether there are any omissions in the division of inspections between multiple inspection devices, and ensure that the tests necessary to detect defects are not set in any of the inspection devices. In addition, it is possible to prevent wasteful duplication of inspections between a plurality of inspection devices.

Further, the component inspection constraint design storage means stores component inspection constraint design information for each of the component types and for each electrode type included in a component of the component type, and the inspection coverage setting confirmation image is stored for each of the electrode types. It may be displayed in In addition to defects affecting the entire part (wrong part, missing part, upside down, part misalignment, etc.), there are also defects targeting the electrodes of the part (electrode floating, electrode displacement, non-wetting, etc.). If the configuration is correct, more appropriate tests can be set.

Further, the inspection coverage setting confirmation image includes a list of matrices in which one axis shows a list of the defect types in the component inspection constraint design information, and the other axis shows a list of the inspection devices installed in the production line. In the list, in the column where the row or column indicating the inspection device that detects the defect intersects the row or column indicating the detected defect, the name of the inspection item that detects the defect is displayed. may also be displayed. Such a matrix display provides good visibility and allows the user to more easily confirm which inspection equipment detects which defects and which inspection items.

Further, the inspection management system further includes an input means for accepting input operations from a user, and the inspection program creation means is configured to implement the test program on the component mounting board based on the information input via the input means. By determining the inspection items capable of detecting the defects defined in the component inspection constraint design information for each component to be inspected and the inspection equipment that performs the inspection related to the inspection items, The inspection program may be created, and the inspection coverage setting confirmation image may serve as a user interface for inputting information related to the creation of the inspection program.

With such a configuration, when creating an inspection program for a component mounting line equipped with multiple inspection devices, users can check the types of defects that should be detected cross-sectionally across multiple inspection devices for each component part number. It becomes possible to set the contents of the inspection to be performed by each inspection device by covering all of the above. Further, the contents of the program set in this way can be checked with ease of viewing.

Further, the inspection program creation means displays an inspection parameter setting image, which serves as a user interface for inputting inspection parameters related to the inspection items, on the image display means, and displays information about the inspection parameters via the input means. The contents of the inspection items may be set by accepting information input. With such a configuration, the user can easily input test details to perform an appropriate test.

Furthermore, if an inspection item for detecting any of the defects in the component inspection constraint design information is not set, the inspection program creation means displays a display to that effect in the inspection coverage setting confirmation image. It may be something you do. With such a configuration, if a test item has not been set, the user can easily confirm this, and can modify the test program based on this.

The inspection management system further includes an inspection history information storage unit that stores inspection history information regarding the results of inspections conducted in the past, and the inspection program creation unit includes the list of inspection coverage setting confirmation images. If the content of the inspection item currently set in the table is such that the defect may be overlooked and/or over-examined in light of the inspection history information, that fact will be indicated in the inspection coverage setting confirmation image. It may also be possible to display a display that indicates. With such a configuration, the user can easily (immediately) confirm whether the test parameters set for each test item are appropriate.

The present invention also provides an inspection management device for managing inspection contents of one or more inspection devices installed in a production line for component mounting boards, comprising:
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 of the component mounted on the component mounting board;
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 that performs the inspection related to the inspection item. an inspection program creation means for creating;
An image displaying an inspection coverage setting confirmation image that shows, in a list, which of the inspection devices installed in the production line detects each of the defects in the component inspection constraint design information for each part number of the component. a display means;
It can also be regarded as an inspection management device that is characterized by this.

Moreover, 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.

According to the present invention, in a component mounting board production line having multiple inspection processes, it is possible to comprehensively confirm and set the inspection contents to be performed in each inspection process.

FIG. 1 is a schematic configuration diagram of a component mounting line to which an inspection management apparatus according to an application example is applied. FIG. 2 is a functional block diagram of the test management device according to the application example. FIG. 3 is a diagram showing an example of an image displayed on the image display section of the test management device according to the application example. FIG. 4 is a diagram showing a schematic configuration of a component mounting line to which the inspection management system according to the first embodiment is applied. FIG. 5 is a functional block diagram of the test management system according to the first embodiment. FIG. 6 is a diagram showing an example of an image displayed on the image display section of the test management apparatus according to the first embodiment. FIG. 7 is a diagram showing an example of an image displayed on the image display section of the test management apparatus according to the first embodiment. FIG. 8 is a flowchart showing the flow when creating a test program in the test management system according to the first embodiment. FIG. 9 is a diagram showing an example of an image displayed on the image display section of the test management apparatus according to the first embodiment. FIG. 10 is a diagram showing a schematic configuration of a component mounting line to which the inspection management system according to the second embodiment is applied. FIG. 11 is a functional block diagram of the test management system according to the second embodiment. FIG. 12 is a diagram showing an example of an image displayed on the image display section of the test management apparatus according to the second embodiment. FIG. 13 is a diagram showing an example of an image displayed on the image display section of the test management apparatus according to a modification of the second embodiment. FIG. 14 is a diagram illustrating an example of an image displayed on an image display unit according to another example of the embodiment.

Hereinafter, embodiments of the present invention will be described based on the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described in the following examples are not intended to limit the scope of the present invention.

<Application example>
The present invention can be applied, for example, as an inspection management device 9 as shown in FIGS. 1 and 2. FIG. 1 is a schematic diagram showing an outline of a component mounting line for a printed circuit board according to this application example. FIG. 2 is a functional block diagram of the test management device 9 according to this application example. As shown in FIG. 1, the component mounting line according to this application example includes, in order from the upstream side, a solder printing device A1, a post-solder printing inspection device B1, a mounter A2, a post-mounting inspection device B2, a reflow oven A3, and a solder post-printing inspection device B1. An inspection device B3 is provided.

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

Furthermore, each inspection device (B1, B2, B3) inspects the condition of the substrate at the exit of each process and automatically detects defects or the possibility of defects. Hereinafter, the inspection by the solder post-printing inspection device B1 will be referred to as a post-printing inspection, the inspection by the post-mounting inspection device B2 will be referred to as a post-mounting inspection, and the inspection by the post-reflow inspection device B3 will be referred to as a post-reflow inspection.

The manufacturing devices (A1, A2, A3) and inspection devices (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 includes a main storage device such as a CPU (Central Processing Unit), a RAM (Random Access Memory), an auxiliary storage device (HDD, flash memory, etc.), an input device (keyboard, mouse, controller, touch panel, etc.), and an output device. It consists of a general-purpose computer system equipped with devices (displays, printers, speakers, etc.), communication means (wired or wireless), etc. The inspection management device 9 can be used as a so-called teaching terminal, and can create (including changes to, the same applies hereinafter) an inspection program that defines the content of the inspection to be performed by each inspection device (B1, B2, B3). In addition to this, it is also used for tasks such as registration and setting (including changes; the same applies hereinafter) of various information stored in the storage unit 92, which will be described later.

Further, as shown in FIG. 2, the test management device 9 includes a control section 91, a storage section 92, an input section 93, and an image display section 94 (for example, a liquid crystal display) as functional sections. The control unit 91 further includes a UI (User Interface) control unit 911 and an examination content setting unit 912 as functional modules. Each functional module may be realized, for example, by a CPU reading and executing a program stored in a storage device.

The storage unit 92 includes a component inspection constraint design storage unit 921, an inspection coverage information storage unit 922, and an inspection program storage unit 924, and stores various data.

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 components mounted on a component mounting board.

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

Regarding the inspection items for detecting defects in each part, the types of inspections (inspection items) that can be performed differ depending on the inspection device. Further, in some cases, a plurality of different inspection devices can each perform an inspection (inspection item) that can detect a certain defect. For this reason, in the inspection management system according to this application example, inspection coverage information that indicates which inspection items are to be performed by which inspection equipment for each part number is determined and stored in advance. By referring to the inspection coverage information when creating an inspection program (described later), it is possible to create an inspection program that prevents defects from being overlooked and prevents duplicate inspections from being performed between inspection devices. Become.

In addition, the inspection program storage unit 924 is a database that stores programs created by an inspection program creation unit that will be described later.

The UI control unit 911 displays images related to inspection program confirmation and settings on the image display unit 94, receives user operations, and executes processing in accordance with the operations in cooperation with the inspection content setting unit 912. FIG. 3 shows an example of an inspection coverage setting confirmation image that also serves as a user interface as an example of an image created by the UI control unit 911 and displayed on the image display unit 94. As shown in FIG. 3, the inspection coverage setting confirmation image according to this application example shows which inspection equipment installed on the component mounting line detects each defect in the component inspection constraint design information, with one component part number as one unit. It displays a list of what to do.

The inspection content setting unit 912 reads information necessary for checking and setting the inspection program (component inspection constraint design information, inspection coverage information, etc.) from the storage unit 92 and provides it to the UI control unit 911. Create an inspection program (new settings, changes) based on the information input by . Specifically, through a user interface as shown in the inspection coverage setting confirmation image, the user is presented with component inspection constraint design information and inspection coverage information (including inspection items and inspection parameters), and each information An inspection program is created by accepting new inputs and changes. In this application example, the UI control unit 911 and the test content setting unit 912 correspond to test program creation means.

In addition, the inspection content setting unit 912 may create (new settings or changes) component inspection constraint design information, inspection coverage information, etc. in the process of creating an inspection program. Note that the created inspection program is stored in the inspection program storage section 924, component inspection constraint design information is stored in the component inspection constraint design storage section 921, and inspection coverage information is stored in the inspection coverage information storage section 922.

According to the inspection management device according to the application example described above, the types of defects to be detected for each component type are comprehensively determined in the component inspection constraint design information, so that defects to be detected are not omitted. Furthermore, appropriate inspection items for detecting defects to be detected for each component can be selected based on inspection coverage information predetermined for each component number. In addition, for each inspection device, we define inspection parameters according to the inspection items that can be performed by the inspection device and the defects detected in the inspection items, and provide inspection coverage setting confirmation images according to the actual line configuration. , it is possible to set inspection assignments for each inspection device without omission or unnecessary duplication. As a result, in a component mounting board production line that has multiple inspection processes, the inspection contents to be carried out in each inspection process can be comprehensively checked and set for each component mounted on the board, and an appropriate inspection program can be created. be able to.

Although the above application example describes an example in which the present invention is applied as an inspection management device, the present invention can be applied to other forms as well. Below, examples of forms for carrying out the present invention will be described in further detail.

<Embodiment 1>
(System configuration)
FIG. 4 is a diagram schematically showing a configuration example of a printed circuit board component mounting line to which the inspection management system 1 according to the present embodiment is applied. The component mounting line mainly consists of three processes: solder printing, component mounting, and reflow (solder welding). Further, the test management system 1 according to this embodiment includes a test management device 10 and a data server 20.

As shown in FIG. 4, in the component mounting line, a solder printing device X1, a mounter X2, and a reflow oven X3 are provided as manufacturing devices in order from the upstream side. The solder printing device X1 is a device that prints paste-like solder on electrode portions (referred to as lands) on a printed circuit board by screen printing. The mounter X2 is a device for picking up electronic components to be mounted on a board and placing the components on the solder paste at the corresponding location, and is also called a chip mounter. The reflow furnace X3 is a heating device that heats and melts the solder paste, then cools it and solders the electronic components onto the substrate. When the number and types of electronic components to be mounted on a board are large, a plurality of mounters X2 may be provided on the component mounting line.

In addition, the component mounting line has inspection equipment (Y1, Y2, Y3, Y4) that inspects the condition of the board at the exit of each process of solder printing, component mounting, and reflow, and automatically detects defects or potential defects. is installed. In addition to automatically sorting good products and defective products, each inspection device also has a function of feeding back the operation of each manufacturing device based on the inspection results and analysis results (for example, changing the mounting program).

The solder printing post-inspection device Y1 is a device for inspecting the printed state of solder paste on the board taken out from the solder printing device X1. The solder printing post-inspection device Y1 measures the solder paste printed on the board two-dimensionally or three-dimensionally, and based on the measurement results, determines whether or not various inspection items have normal values (tolerable ranges). Inspection items include, for example, the volume, area, height, positional shift, and shape of the solder. For two-dimensional measurement of solder paste, an image sensor (camera), etc. can be used, and for three-dimensional measurement, a laser displacement meter, phase shift method, spatial coding method, optical cutting method, etc. can be used. can.

The post-mount inspection device Y2 is a device for inspecting the arrangement state of electronic components on the board taken out from the mounter X2. The post-mount inspection device Y2 measures the component placed on the solder paste in two or three dimensions (the component body, electrodes, or other part of the component), and uses the measurement results to determine various inspection items. Determine whether the value is normal (tolerable range). Inspection items include, for example, misalignment of parts, misalignment of angle (rotation), missing parts (components are not placed), wrong parts (different parts are placed), and wrong polarity (between the part side and the board). (the polarity of the side electrodes is different), front-back reversal (the parts are placed face down), and the height of the parts. Similar to solder print inspection, image sensors (cameras) can be used for two-dimensional measurement of electronic components, while laser displacement meters, phase shift methods, spatial coding methods, and optical cutting methods can be used for three-dimensional measurements. etc. can be used.

The appearance inspection device Y3 is a device for inspecting the quality of soldering on the board taken out from the reflow oven X3. The appearance inspection device Y3 measures the solder portion after reflow two-dimensionally or three-dimensionally, and determines whether or not various inspection items have normal values (tolerable ranges) based on the measurement results. In addition to the same items as component inspection, the inspection items also include the quality of the solder fillet shape. In addition to the laser displacement meter, phase shift method, spatial coding method, and optical cutting method mentioned above, the so-called color highlight method (R, G, and B illumination is applied to the solder surface at different incident angles) is used to measure the shape of solder. The three-dimensional shape of the solder can be detected as two-dimensional hue information by capturing the reflected light of each color with a zenith camera.

The X-ray inspection device Y4 is a device for inspecting the soldering condition of a board using an X-ray image. For example, in the case of package parts and multilayer boards such as BGA (Ball Grid Array) and CSP (Chip Size Package), the solder joints are hidden under the parts and boards, so the visual inspection equipment Y3 (in other words, the external appearance image) cannot inspect the condition of the solder. The X-ray inspection device Y4 is a device to compensate for such weaknesses in visual inspection. Inspection items of the X-ray inspection device Y4 include, for example, misalignment of components, solder height, solder volume, solder ball diameter, back fillet length, and quality of solder joints. Note that as the X-ray image, an X-ray transmission image or a CT (Computed Tomography) image may be used. In the following description, the visual inspection device Y3 and the X-ray inspection device Y4 may be collectively referred to as a post-reflow inspection device.

Further, each of the inspection devices (Y1, Y2, Y3, Y4) according to the present embodiment may be provided with a display device for visually confirming the product to be inspected, and the display device for visual inspection is a display device for each inspection device. It may be provided in the component mounting line as a separate terminal (that is, as a visual inspection device).

In the following, the inspection performed by the solder post-printing inspection device Y1 will be referred to as the post-printing inspection, the inspection performed by the post-mounting inspection device Y2 will be referred to as the post-mounting inspection, and the inspection performed by the visual inspection device Y3 and the X-ray inspection device Y4 will be referred to as the post-reflow inspection. , sometimes.

(Inspection management device)
The manufacturing devices (X1, X2, X3) and inspection devices (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 that manages and controls the manufacturing devices (X1, X2, X3) and the inspection devices (Y1, Y2, Y3, Y4), and although not shown, it includes a main storage device such as a CPU and a RAM, General-purpose device equipped with auxiliary storage device (HDD, flash memory, etc.), input device (keyboard, mouse, controller, touch panel, etc.), output device (display, printer, speaker, etc.), communication means (wired or wireless), etc. It is composed of a standard computer system. Each functional unit of the test management device 10, which will be described later, is realized by the CPU reading and executing a program stored in an auxiliary storage device.

Note that the test management device 10 may be configured by one computer, or may be configured by multiple computers. Alternatively, all or part of the functions of the inspection management device 10 may be implemented in a computer built into either the manufacturing equipment (X1, X2, X3) or the inspection equipment (Y1, Y2, Y3, Y4). It is possible. Alternatively, some of the functions of the test management device 10 may be realized by a server on a network (such as a cloud server).

(data server)
The data server 20 is a terminal having a large storage capacity, and stores various data as described below. It transmits information held 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.

(Functional block)
FIG. 5 shows a functional block diagram of the test management device 10 and data server 20 of this embodiment. As shown in FIG. 5, the data server 20 includes a component inspection constraint design storage section 211, an inspection coverage information storage section 212, a product number group storage section 213, an inspection program storage section 214, and an inspection history information storage section 215. Ru.

Note that the inspection coverage information is the same as that described in the application example. However, the inspection coverage information storage unit 212 according to the present embodiment includes, in addition to inspection coverage information (first variation) that defines the combination of standard inspection items and inspection devices, the inspection coverage information (first variation) that defines the combination of standard inspection items and inspection devices, as well as inspection coverage information (first variation) that defines the combination of standard inspection items and inspection devices. If there are combinations (other variations), inspection coverage information for these different variations is also stored.

Although this embodiment is an inspection management system applied to a component mounting line that includes inspection devices (Y1, Y2, Y3, Y4), the combination of inspection devices is not limited to this. For example, as in the application example, there may be only one post-reflow inspection device, or a line configuration in which post-printing inspection is not performed can also be envisaged. Also, depending on the characteristics and arrangement of the components to be mounted, it may not be possible to properly inspect defects using a specific inspection device or inspection item (for example, for components with highly reflective surfaces, component height may be an inspection item). (for example, it is not appropriate to do so). In this way, multiple variations of the inspection items and combinations of inspection devices necessary to detect defects specified in the component inspection constraint design information are determined according to the combination of various inspection devices and the characteristics and arrangement of the parts. This is desirable.

The product number group storage unit 213 stores product number group information in which a plurality of component product numbers to which inspection coverage information of the same content is applied are grouped. Inspection coverage information may be set and changed on a product number group basis. The inspection history information storage unit 215 stores inspection history information related to the results of inspections (image data, three-dimensional shape data, final pass/fail judgment results, etc.) conducted in each inspection device (Y1, Y2, Y3, Y4) in the past. This is a database that stores information. Note that the component inspection constraint design storage section 211 and the inspection program storage section 214 are the same as those described in the application example, so further explanation will be omitted.

In this embodiment, the component inspection constraint design storage section 211, the inspection coverage information storage section 212, the product number group storage section 213, the inspection program storage section 214, and the inspection history information storage section 215 mutually refer to the stored information. It functions as a so-called relational database that can be linked. That is, the inspection program described below does not hold information on defect types related to the component inspection constraint design information and information on inspection items (and their inspection parameters) related to the inspection coverage information, but instead stores the component inspection constraint design storage unit 211, By referring to information stored in the inspection coverage information storage unit 212, the content of the inspection to be performed by each inspection device may be defined.

Further, as shown in FIG. 5, the test management device 10 includes a control section 110, an input section 120, and an image display section 130, and the control section 110 further includes a data reading section 111 and a UI control section as functional modules. 112, an inspection content setting section 113, a simulation execution section 114, and an inspection coverage determination section 115.

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

Next, each functional module included in the control unit 110 will be explained. The data reading unit 111 reads various information related to inspection program confirmation/setting processing from the data server 20 and provides it to the UI control unit 112, inspection content setting unit 113, simulation execution unit 114, and inspection coverage determination unit 115. .

The UI control unit 112 displays images related to confirmation and settings of the inspection program, which will be described later, on the image display unit 130, receives user operations, and executes processing according to the operations in cooperation with the inspection content setting unit 113. . That is, the image created by the UI control unit 112 and displayed on the image display unit 130 includes a UI image that also serves as a user interface. FIG. 6 shows an inspection coverage setting confirmation image that is an example of such an image. As shown in FIG. 6, the inspection coverage setting confirmation image according to this embodiment shows which inspection equipment installed in the component mounting line detects each defect in the component inspection constraint design information, with one component part number as one unit. It displays a list of what to do. More specifically, one axis shows a list of defect types in the component inspection constraint design information, and the other axis includes a matrix list showing a list of each inspection device installed in the component mounting line. In the table, the name of the inspection item that detects a defect is displayed in the column where the row or column indicating the inspection device that detects the defect intersects with the row or column indicating the detected defect.

The inspection content setting unit 113 reads information necessary for checking and setting the inspection program (component inspection constraint design information, inspection coverage information, product number group information, etc.) from the data server 20 and provides it to the UI control unit 112. Create an inspection program (new settings, changes) based on information input by user operations. Specifically, through a user interface as shown in the inspection coverage setting confirmation image, the user is presented with component inspection constraint design information and inspection coverage information (including inspection items and inspection parameters), and each information An inspection program is created by accepting new inputs and changes.

In addition, the inspection content setting unit 113 may create (newly set or change) component inspection constraint design information, inspection coverage information, product number group information, etc. in the process of creating an inspection program. The created inspection program is stored in the inspection program storage section 214, component inspection constraint design information is stored in the component inspection constraint design storage section 211, inspection coverage information is stored in the inspection coverage information storage section 212, and product number group information is stored in the product number group storage section. 213, respectively.

The simulation execution unit 114 selects the currently set inspection contents (inspection (items and inspection parameters). Based on the results of the simulation, if the currently set inspection details result in defects being overlooked or overlooked, the information is provided to the UI control unit 112. The UI control unit 112, which has received the information, displays a notification on the inspection coverage setting confirmation image that the inspection coverage setting confirmation image will be overlooked or overlooked.

FIG. 7 shows an example of an inspection coverage setting confirmation image that indicates that the current inspection content may cause oversight or oversight. As shown in FIG. 7, when defects are overlooked or overlooked in the currently set inspection content, for example, the name of the inspection item where the oversight or oversight occurs is highlighted so that it can be identified. The example in FIG. 7 shows that an oversight occurs in the inspection of the "component difference (height)" inspection item in the post-mount inspection performed in the post-mount inspection device Y2, and the X-ray inspection performed in the X-ray inspection device Y4 This indicates that over-examination occurs in the inspection item "void (area)".

The inspection coverage determination unit 115 determines, for each component, whether the currently set inspection coverage information includes inspection items for detecting all types of defects in the component inspection constraint design information. As a result of the determination, if an inspection item for detecting any of the defects is not set, information to that effect is provided to the UI control unit 112. Upon receiving the information, the UI control unit 112 displays an alert on the inspection coverage setting confirmation image that there is a defective type for which inspection items have not been set. In this embodiment, the "!" mark displayed next to "Not wet" in the list of defective types in FIG. 7 corresponds to such an alert display.

(Flow of inspection program creation process)
Next, a method for creating an inspection program using the inspection management system 1 according to the present embodiment will be described based on the flowchart in FIG. 8 . A new inspection program is 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 based on this, the user uses the input unit 120 to display parts on the circuit of the board by part number. (S101). Next, the inspection coverage determining unit 115 determines whether 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 component inspection constraint design information corresponding to each component, the types of defects in the component inspection constraint design information, the inspection items that can detect all of the defects (and the inspection equipment that performs the inspection) ) is stored in the data server 20.

If it is determined in step S102 that there is inspection coverage according to the newly allocated circuit design, the process advances to step S106. On the other hand, if it is determined that there is no inspection coverage (for example, there is a defective type to which no inspection item has been assigned), the UI control unit 112 displays an alert to that effect on the image display unit 130. Output. Upon receiving such an alert, the user sets necessary test items (test parameters). Specifically, according to a UI image (not shown) provided by the UI control unit 112, information related to component inspection constraint design information, inspection coverage information (including variation settings), etc. is input through the input unit 120. The input information is transmitted to the data server 20, and the information in each database of the component inspection constraint design storage section 211, inspection coverage information storage section 212, and product number group storage section 213 is updated (S103, S104, S105). Note that it is not necessary to perform all of the processes from steps S103 to S105, and for example, there may be cases where the setting of component inspection constraint design information in step S103 is omitted.

After the processing from step S103 to step S105, information that satisfies the inspection coverage according to the newly assigned circuit design is added to the component inspection constraint design storage section 211, the inspection coverage information storage section 212, and the product number group storage section 213. Then, the process advances to step S106. In step S106, the user selects inspection coverage information suitable for the line configuration that is likely to produce the newly registered component mounting board according to the UI image (not shown) provided by the UI control unit 112 (S106).

Next, when the user sets an inspection based on the inspection coverage information selected in step S106, the user asks whether defects can be appropriately detected using the currently set inspection parameters for each inspection item (that is, whether an appropriate inspection can be performed). It is determined whether or not (step S107). Here, for example, by referring to the inspection coverage setting confirmation image shown in Figure 7 and checking whether there are any inspection items that may be overlooked or overlooked, it is determined whether or not an appropriate inspection can be performed. can do.

If it is determined in step S107 that an appropriate test cannot be performed, the user modifies the test items (including test parameters) (S108). Here, the UI control unit 112 displays a UI image for modifying the examination content information, and the user can make inputs according to the UI image to modify the examination items. Specifically, for example, when a highlighted inspection item is selected from the inspection coverage setting confirmation image as shown in Figure 7, another UI image for setting the parameters of the inspection item pops up and is displayed. All you have to do is make it so. FIG. 9 shows an example of a pop-up UI image for setting test parameters.

After the inspection items are corrected in step S108, the process returns to step S107 and the same process is repeated until an appropriate inspection can be performed. On the other hand, if it is determined in step S107 that all types of defects can be detected appropriately, the program is set as a new inspection program for a new component-mounted board and saved in the inspection program storage unit 214 ( S109). Then, after executing the process in step S109, the flow of creating an inspection program temporarily ends.

Note that the inspection program created by the processing from step S101 to step S109 covers the inspection contents for detecting defects in each component in each inspection device by referring to component inspection constraint design information and inspection coverage information. It is defined in terms of That is, in this embodiment, the control unit 110 corresponds to the inspection program creation means of the present invention, the processing of steps S104 and S105 corresponds to the inspection assignment setting step of the present invention, and the processing of steps S106 to S108 corresponds to the inspection program creation means. Each corresponds to a step.

According to the inspection management system 1 having the above-described configuration, when creating an inspection program for a component mounting line equipped with a plurality of inspection devices, a user can perform the following operations across the plurality of inspection devices for each component part number: In addition, it becomes possible to set the contents of the inspection to be performed by each inspection device, covering all types of defects to be detected. In addition, the contents of the program set in this way can be easily checked at a glance, and if inspection coverage is not satisfied or the current inspection parameters are not appropriate in light of past inspection history, Since this is notified on the UI image, mistakes in setting the examination content information can be more reliably prevented.

<Embodiment 2>
Next, other embodiments of the present invention will be described based on FIGS. 10 and 11. FIG. 10 is a diagram showing a component mounting line to which the inspection management system 2 according to the present embodiment is applied, and FIG. 11 is a functional block diagram of the inspection management system 2. As shown in FIG. 10, in this embodiment, the arrangement of manufacturing equipment (X1, X2, X3) and inspection equipment (Y11, Y12, Y13, Y14) in the production line for component mounting boards is the same as in the first embodiment. It is. Further, the test management device 11 and data server 21 of this embodiment have many configurations in common with the test management device 10 and data server 20 of the first embodiment. Therefore, the same components as those in Embodiment 1 are given the same reference numerals, and detailed explanations will be omitted.

The inspection apparatus (Y11, Y12, Y13, Y14) according to this embodiment has the same basic configuration as that of the first embodiment, but in parallel with the actual quality determination inspection of the component mounting board to be inspected. , it is now possible to perform a simulation inspection using the same inspection data as the actual inspection. More specifically, each inspection device performs a first inspection based on a first inspection program for actual quality judgment inspection on one component mounting board to be inspected, and a second inspection for simulation. A second test based on the program is conducted in parallel. Then, the first and second test results are transmitted to the data server 21.

As shown in FIG. 11, compared to the data server 20 of the first embodiment, the data server 21 of the test management system 2 according to the present embodiment does not have the test history information storage section 215, and has a first test result storage section 216, The difference is that a second inspection result storage section 217 and an actual failure data storage section 218 are provided.

The first test result storage unit 216 and the second test result storage unit 217 are databases that store result data of the first test and the second test, respectively, for each component mounting board that has been tested. Further, the actual defect data storage unit 218 is a database that stores data on component mounting boards that are actually determined to be defective through visual inspection or contact inspection (not shown). That is, in the component mounting line in this embodiment, in addition to the inspection by the inspection devices (Y11, Y12, Y13, Y14), inspections such as visual inspection to determine whether there is an actual defect are performed, and the inspection results are The data is sent to the data server 21 and stored.

The control unit 310 of the test management device 11 differs from the control unit 110 in the test management device 10 of the first embodiment in that it includes an optimal setting determination unit 116. The optimal setting determination section 116 stores the first inspection result stored in the first inspection result storage section 216, the second inspection result stored in the second inspection result storage section 217, and the actual defect data storage section 218. Based on the stored actual pass/fail determination results, it is determined which of the first inspection program and the second inspection program is more suitable for the inspection. More specifically, the test results of the first and second tests are compared with the actual defect data, and which test can be performed with fewer oversights and fewer oversights (in other words, which one has a higher correct answer rate? ). Note that here we will judge which testing program is appropriate based on the correct answer rate, but the basis for the judgment is not limited to the correct answer rate alone; for example, indicators such as the distribution of measured values and the degree of margin for pass/fail judgment can be used. You can also do it.

Furthermore, the UI control unit 112 according to the present embodiment displays a simulation result display image on the image display unit 130, which shows a comparison between the results of the first test and the results of the second test. FIG. 12 shows an example of such a simulation result display image. As shown in FIG. 12, the simulation result display image shows the inspection contents of the first inspection program and the second inspection program, the current inspection results carried out in the first program, and the simulation inspection carried out in the second inspection program. The percentage of correct answers for the results is displayed in comparison. In addition, the ranking among test programs regarding the correct answer rate is also displayed.

In this embodiment, the first inspection program and the second inspection program have different revisions of the inspection item "AI inspection" for detecting "missing item" defects, and the second inspection program has a higher accuracy. It can be seen that this is a more appropriate testing program that can conduct tests with a high rate.

As described above, according to the inspection management system 2 according to the present embodiment, a simulation is performed when an actual inspection is performed using the current inspection program, and at the same time, an inspection is performed using another inspection program with different inspection contents. can be used to determine the suitability of other inspection programs. Therefore, when there is a need to change inspection settings, update inspection algorithms, adopt a new AI model, etc., you can know whether a new inspection program that reflects these needs is appropriate without replacing the current inspection program. be able to. That is, by setting a new inspection program, it is possible to eliminate the risk of deteriorating the quality of inspections for products that are actually mass-produced.

(Modified example)
Note that in the second embodiment, the simulation test performed in each test device was only based on the second test program, but a plurality of simulation tests can be performed in parallel. In this case, the data server 21 is further provided with databases for simulation testing, such as a third test result storage section, a fourth test result storage section, and so on. FIG. 13 shows an example of a simulation result display image when a plurality of simulation tests are performed.

<Others>
The above description of the embodiments is merely for illustratively explaining the present invention, and the present invention is not limited to the above-described specific forms. The present invention can be modified in various ways within the scope of its technical idea. For example, in the above embodiment, component inspection constraint design information is set for each component type, but component inspection constraint design information is further determined for each electrode type included in the component type, and component inspection constraint design information is It may be stored in the storage unit. In addition to defects affecting the entire part (wrong part, missing part, upside down, part misalignment, etc.), there are also defects targeting the electrodes of the part (electrode floating, electrode displacement, non-wetting, etc.). If the configuration is correct, more appropriate tests can be set. FIG. 14 shows an example of an inspection coverage setting confirmation image created for each electrode type.

Furthermore, in each of the above embodiments, explanations have been given taking as an example a component mounting line in which a plurality of inspection devices are arranged, but the present invention can also be applied to a component mounting line equipped with only a single inspection device. be. By storing data corresponding to a component mounting line equipped with only a single inspection device in the component inspection constraint design storage section, inspection coverage information storage section, product number group storage section, and inspection program storage section, The inspection management system can be flexibly adapted to various line configurations.

Furthermore, in each of the above embodiments, the inspection coverage information storage section and the product number group information storage section are separate databases, but they are combined into one database by including the inspection coverage information in the product number group information. It's okay.

<Additional note 1>
An inspection management system (1) that manages inspection contents of one or more inspection devices (Y1, Y2, Y3, Y4) installed in a production line for component mounting boards,
component inspection constraint design storage means (211) for storing component inspection constraint design information defining one or more types of defects to be detected for each component type of the component mounted on the component mounting board;
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 that performs the inspection related to the inspection item. inspection program creation means (110) for creating;
For each part number and for each combination of the inspection devices installed on the production line, list which of the inspection devices installed on the production line detects each of the defects in the component inspection constraint design information. image display means (130) for displaying an inspection coverage setting confirmation image shown in
An inspection management system characterized by:

<Additional note 2>
An inspection management device (9) that manages inspection contents of one or more inspection devices (B1, B2, B3) installed in a production line for component mounting boards,
component inspection constraint design storage means (921) for storing component inspection constraint design information defining one or more types of defects to be detected for each component type of the component mounted on the component mounting board;
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 that performs the inspection related to the inspection item. inspection program creation means (91) for creating;
For each part number and for each combination of the inspection devices installed on the production line, list which of the inspection devices installed on the production line detects each of the defects in the component inspection constraint design information. image display means (94) for displaying an inspection coverage setting confirmation image shown in
An inspection management device characterized by:

1, 2... Inspection management system A1, X1... Solder printing device A2, X2... Mounter 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 device 9, 10, 11... Inspection management device 110, 310. ...Control section 92... Storage section 93, 120... Input section 94, 130... Image display section 20, 21...Data server

Claims (8)

1. An inspection management system that manages the inspection contents 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 of the component mounted on the component mounting board;
   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 that performs the inspection related to the inspection item. an inspection program creation means for creating;
   An image displaying an inspection coverage setting confirmation image that shows, in a list, which of the inspection devices installed in the production line detects each of the defects in the component inspection constraint design information for each part number of the component. a display means;
   An inspection management system characterized by:
2. The component inspection constraint design storage means stores component inspection constraint design information for each component type and for each electrode type included in a component of the component type,
   The inspection coverage setting confirmation image is displayed for each electrode type,
   The inspection management system according to claim 1, characterized in that:
3. The inspection coverage setting confirmation image is
   including a list of matrices showing a list of the types of defects in the component inspection constraint design information on one axis and a list of the inspection devices installed on the production line on the other axis,
   In the list, displaying the name of the inspection item that detects the defect in a column where a row or column indicating the inspection device that detects the defect intersects a row or column indicating the detected defect;
   The inspection management system according to claim 1 or 2, characterized in that:
4. It further has an input means for accepting input operations from a user,
   The inspection program creation means includes:
   Based on the information input through the input means, the defect can be detected for each component mounted on the component mounting board with respect to the defect defined in the component inspection constraint design information regarding the component. The inspection program is created by determining inspection items and inspection equipment for carrying out the inspection related to the inspection items,
   The inspection coverage setting confirmation image serves as a user interface for inputting information related to creating the inspection program.
   The inspection management system according to claim 3, characterized in that:
5. The inspection program creation means includes:
   Displaying an examination parameter setting image that serves as a user interface for inputting examination parameters related to the examination item on the image display means, and accepting information input regarding the examination parameters via the input means, Set the contents of the item,
   The inspection management system according to claim 4, characterized in that:
6. The inspection program creation means includes:
   Claim characterized in that, when an inspection item for detecting any of the defects in the component inspection constraint design information is not set, a display indicating this is displayed in the inspection coverage setting confirmation image. Inspection management system according to item 3.
7. further comprising test history information storage means for storing test history information related to the results of tests conducted in the past;
   The inspection program creation means includes:
   If the contents of the inspection items currently set in the list of the inspection coverage setting confirmation image are such that the defect may be overlooked and/or over-examined in light of the inspection history information, A display indicating this is displayed on the inspection coverage setting confirmation image.
   The inspection management system according to claim 3, characterized in that:
8. An inspection management device that manages inspection contents 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 of the component mounted on the component mounting board;
   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 that performs the inspection related to the inspection item. an inspection program creation means for creating;
   An image displaying an inspection coverage setting confirmation image that shows, in a list, which of the inspection devices installed in the production line detects each of the defects in the component inspection constraint design information for each part number of the component. a display means;
   An inspection management device characterized by:

Images