JP7088874B2 - Electronic component visual inspection system - Google Patents

Description

The present invention relates to an electronic component visual inspection device, and particularly when inspecting whether the soldering of electronic components mounted on a printed circuit board is normally connected and whether the mounted electronic components are correct electronic components. Regarding a series of electronic component inspection systems.

Conventionally, as shown in FIG. 8, an electronic component visual inspection system inspects whether the soldering of electronic components mounted on a printed board is normally connected and whether the mounted electronic components are correct electronic components. If there is an electronic component registered as an electronic component inspection library for the printed board inspection data developed from the CAD data, the inspection items and allowable values specific to the electronic component are called, and the electronic component inspection library is used. If there are electronic components that are not registered as, by creating inspection items and allowable values and registering them as printed board inspection data, the quality of each electronic component mounted on the printed board can be confirmed. It has become.

As shown in FIG. 9, the electronic components mounted on the printed circuit board are inspected for missing parts to confirm whether they are mounted in the theoretical position of the printed circuit board, and inspected for misalignment to confirm whether they are out of the theoretical position. Solder inspection to confirm whether the electrode part is correctly connected to the joint part on the printed circuit board, constant inspection to confirm whether the parts with correct resistance value, capacity, and characteristics are mounted, etc. are carried out.
The outer shape of the electronic parts mounted on the printed circuit board is patterned, and even if the electronic parts have different resistance values, capacities, and characteristics, there is no difference in the outer shape. By diverting the data of the electronic component inspection library of the same shape created earlier and changing only the constant inspection item that inspects the unique number written on the upper surface of the electronic component, the creation time of the electronic component inspection library is shortened. There is.

Further, for example, in Patent Document 1, a test specification editing process for editing a plurality of test items and a test flow in which the test items are arranged in a test order based on the input test specifications of the changed product, and the test specification editing. Tests linked to multiple test items and test flows edited in the process to create test work instructions, and to create test work instructions linked to multiple test items and test flows edited in the test specification editing process. A configuration having a format generation process for generating a test performance data format in a performance database is disclosed.

Japanese Unexamined Patent Publication No. 2005-196512

However, in the conventional technique shown in FIG. 9 above, the electronic component inspection library once created is unique to the electronic component. Therefore, when the permissible value of the electronic component inspection library is changed due to the change of the production condition or the inspection condition, it becomes necessary to change all the patterned electronic component inspection libraries having the same shape.
Further, in the configuration disclosed in Patent Document 1, when the test specifications (test conditions) for one component are changed, it is necessary to change the corresponding test flow, and the other components are of the same type as the above components. Even if it is, if the test specifications are changed, it is necessary to change it to correspond to each, and it is not possible to expect a reduction in the man-hours for the change.

Therefore, the present invention provides an electronic component visual inspection system that can improve the efficiency of creating an electronic component inspection library and shorten the work time for changing the allowable value of the electronic component inspection library.

In order to solve the above problems, the electronic component appearance inspection system according to the present invention is an electronic component that performs an appearance inspection of an electronic component using a host server that creates and transmits CAD data and CAD data transmitted from the host server. The electronic component visual inspection device includes a visual inspection device and a storage device for storing data converted by the electronic component visual inspection device as an electronic component visual inspection library, and the electronic component visual inspection device is implemented in the visual inspection of electronic components. It is characterized in that a plurality of judgment items for judging the quality of a component are divided into external shape information and constant information and managed individually.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide an electronic component appearance inspection system capable of improving the efficiency of creating an electronic component inspection library and shortening the work time for changing the allowable value of the electronic component inspection library.
Issues, configurations and effects other than those described above will be clarified by the following description of the embodiments.

It is an overall schematic block diagram of the electronic component appearance inspection system which concerns on one Embodiment of this invention. It is a functional block diagram of the electronic component appearance inspection apparatus shown in FIG. It is explanatory drawing of the data structure of CAD data. It is a figure which shows an example of the data of the board information part among the CAD data shown in FIG. It is a figure which shows an example of the data of the mounting information part among the CAD data shown in FIG. It is a flowchart which shows the printed circuit board inspection data creation flow by the electronic component appearance inspection apparatus shown in FIG. It is a display screen example of the display part of the electronic component appearance inspection apparatus shown in FIG. 2, and is the figure which shows an example of the electronic component inspection library edit screen. It is a figure which shows the outline of data creation of the general electronic component appearance inspection system. It is a figure which shows the outline of the electronic component quality judgment.

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

FIG. 1 is an overall schematic configuration diagram of an electronic component visual inspection system according to an embodiment of the present invention. As shown in FIG. 1, the electronic component visual inspection system 1 is an electronic component visual inspection device 2 that acquires and converts CAD data transmitted from a higher-level server 3 that creates and transmits CAD data and a higher-level server 3 into data to be used. , And a storage device 3 that stores the data to be used converted by the electronic component visual inspection device 2 as an electronic component visual inspection library.
Further, the electronic component visual inspection device 2 has a function of reading CAD data having board information and mounting information for each set printed circuit board. In addition, when reading CAD data, a patterned and pre-registered external shape inspection library for the same shape unit associated with the part code and a pre-registered electronic component constant inspection library that is unique to the part code. Has the function of assigning to the part code.

FIG. 2 is a functional block diagram of the electronic component visual inspection apparatus 2 shown in FIG. As shown in FIG. 2, the electronic component visual inspection device 2 has a data acquisition unit 21 for acquiring CAD data transmitted from a higher-level server 3, a determination unit 22, a storage unit 23, an input I / F 24, and a display control, which will be described in detail later. It is composed of a unit 25 and a communication I / F 26. These are connected to each other by an internal bus 27. Further, the electronic component visual inspection device 2 includes an input unit 28 such as a keyboard or mouse connected via the input I / F 24, and a display unit such as an LCD or an organic EL display connected via the display control unit 25. 29 is provided. In this specification, the function of the electronic component visual inspection itself may be a known one, and is not described in the functional block diagram of FIG. 2, and the description thereof will be omitted below.
The determination unit 22 and the display control unit 25 are, for example, a processor such as a CPU, a ROM for storing a program, and a storage device such as a RAM for temporarily storing data in a process in which the processor executes a program read from the ROM. It will be realized at.

The data acquisition unit 21 reads the CAD data of the printed circuit board to be created transmitted from the upper server 3. Here, the data structure of CAD data will be described. FIG. 3 shows an explanatory diagram of the data structure of CAD data. As shown in FIG. 3, the CAD data is composed of a board information unit and a mounting information unit. The board information unit includes "printed circuit board name", "board size X", "board size Y", and "board thickness", which are proper names of the printed circuit board. On the other hand, the mounting information unit is the "component circuit number", "component code", "outer shape inspection library", "constant inspection library", "component X coordinate", and "component Y coordinate" of the electronic component mounted on the printed circuit board. , And "component rotation angle".

FIG. 4 is a diagram showing an example of the data of the board information unit among the CAD data shown in FIG. As shown in FIG. 4, the board information unit constituting the CAD data is, for example, "PCB001" as the "printed circuit board name", "200" as the "board size X", "200" as the "board size Y", and "1.6" is stored as the "board thickness".

Further, FIG. 5 is a diagram showing an example of the data of the mounting information unit among the CAD data shown in FIG. As shown in FIG. 5, the mounting information unit constituting the CAD data includes "part circuit number", "part code", "outer shape inspection library", "constant inspection library", "part X coordinate", and "part Y coordinate". "And" parts rotation angle "are linked and stored.
For example, when the "part circuit number" is "R01", the "part code" is "001", the "outer shape inspection library" is "A01", the "constant inspection library" is "001", and the "part X coordinate" is "part X coordinate". "10000", "115.000" as "part Y coordinate", and "0" as "part rotation angle" are associated.
Further, when the "part circuit number" is "R02", the "part code" is "002", the "outer shape inspection library" is "A01", the "constant inspection library" is "002", and the "part X coordinate" is "part X coordinate". "10000", "126.500" as the "part Y coordinate", and "0" as the "part rotation angle" are associated.
When the "part circuit number" is "R04", the "part code" is "004", the "outer shape inspection library" is "A02", the "constant inspection library" is "004", and the "part X coordinate" is "160.""000","50.000" as the "part Y coordinate", and "90" as the "part rotation angle" are associated.

Returning to FIG. 2, the determination unit 22 has been registered when both the "outer shape inspection library" and the "constant inspection library" are registered in the electronic component inspection library stored in the storage device 4, as will be described in detail later. Call both electronic component inspection libraries for information. Further, in the determination unit 22, the "outer shape inspection library" assigned to the component code set in the mounting information of the printed board is registered in the electronic component inspection library stored in the storage device 4, and the "constant inspection library" is registered. If is not registered, only the "outer shape inspection library" is called from the electronic component inspection library, and the constant inspection is performed by creating a library using the sample printed board as an unregistered library.

The storage unit 23 stores the printed circuit board outline information and the printed circuit board mounting information read from the expanded CAD data transferred from the data acquisition unit 21 via the internal bus 27 in a predetermined storage area.
The input I / F 24 receives input by the user from an input unit 28 such as a keyboard or a mouse, and transfers the input information to the determination unit 22 and / or the display control unit 25 via the internal bus 27.

The display control unit 25 controls the display content of the display screen 30 of the display unit 29, which will be described in detail later.
The communication I / F 26 enables access to the storage device 4 and allows reading of the electronic component inspection library stored in the storage device 4.

Next, the creation of the printed circuit board inspection data by the electronic component visual inspection apparatus 2 will be described. FIG. 6 is a flowchart showing a printed circuit board inspection data creation flow by the electronic component visual inspection apparatus shown in FIG.
As shown in FIG. 6, in step S101, the data acquisition unit 21 constituting the electronic component visual inspection device 2 reads the CAD data of the printed circuit board transmitted from the upper server 3.
In step S102, the data acquisition unit 21 expands the read CAD data.

In step S103, the data acquisition unit 21 reads the printed circuit board outline information from the expanded CAD data, stores it in a predetermined storage area of the storage unit 23 via the internal bus 27, and transfers it to the determination unit 22.
In step S104, the data acquisition unit 21 reads the printed circuit board mounting information from the expanded CAD data, stores it in a predetermined storage area of the storage unit 23 via the internal bus 27, and transfers it to the determination unit 22.

In step S105, the determination unit 22 constituting the electronic component visual inspection device 2 is assigned to the component code (FIG. 5) set in the printed circuit board mounting information transferred from the data acquisition unit 21 via the internal bus 27. It is determined whether or not the "outline inspection library" exists in the electronic component external inspection library stored in the storage device 4. The determination unit 22 accesses the storage device 4 via the internal bus 27 and the communication I / F 26 at the time of determination. As a result of the determination, if it exists in the electronic component external inspection library (if it is “Yes”), in step S106, the determination unit 22 accesses the storage device 4 via the internal bus 27 and the communication I / F 26, and the storage device The electronic component external inspection library is read from step 4, and the process proceeds to step S107. On the other hand, as a result of the determination, if it does not exist in the electronic component external inspection library (if it is “none”), the process proceeds to step S107.

In step S107, the storage device 4 stores the "constant inspection library" assigned to the component code (FIG. 5) set in the printed circuit board mounting information transferred from the data acquisition unit 21 via the internal bus 27 by the determination unit 22. Determines if it exists in the electronic component constant inspection library stored in. As a result of the determination, if it exists in the electronic component constant inspection library (“Yes”), in step S108, the determination unit 22 accesses the storage device 4 via the internal bus 27 and the communication I / F 26, and the storage device Read the electronic component constant inspection library from step 4, and proceed to step S109. On the other hand, as a result of the determination, if it does not exist in the electronic component constant inspection library (if it is “none”), the process proceeds to step S109.

In step 109, if any one of the above-mentioned "outline inspection library" and "constant inspection library" exists in the electronic component inspection library, the determination unit 22 proceeds to step S110, and proceeds to the above-mentioned "outline inspection library" and "outline inspection library". If neither of the "constant inspection libraries" exists in the electronic component inspection library, the process proceeds to step S111.

In step S110, the "outline inspection library" or "constant inspection library" existing in the electronic component inspection library is read out, and the "outline inspection library" or "constant inspection library" not present in the electronic component inspection library is sample-printed as an unregistered library. Create an electronic component inspection library using the board.

In step S111, the determination unit 22 creates an electronic component inspection library using the sample printed circuit board with both the "outer shape inspection library" and the "constant inspection library" as unregistered libraries, and completes the creation of the printed circuit board inspection data. ..

As described above, when the determination unit 22 constituting the electronic component visual inspection device 2 has both the "outer shape inspection library" and the "constant inspection library" registered in the electronic component inspection library stored in the storage device 4. , Call both electronic component inspection libraries as registered information. Further, in the determination unit 22, the "outer shape inspection library" assigned to the component code set in the mounting information of the printed board is registered in the electronic component inspection library stored in the storage device 4, and the "constant inspection library" is registered. If is not registered, only the "outer shape inspection library" is called from the electronic component inspection library, and the constant inspection is created using the sample printed board as an unregistered library. When both the "outer shape inspection library" and the "constant inspection library" set in the mounting information of the printed circuit board are not registered in the electronic component inspection library, the determination unit 22 uses the sample printed circuit board as an unregistered library. Create an electronic component inspection library.

In this embodiment, the data acquisition unit 21 executes steps S101 to S104 described above, but the present invention is not limited to this. For example, a processing unit may be provided in the functional block diagram of the electronic component visual inspection device 2 shown in FIG. 2, and the processing unit may execute steps S102 to S104.

The electronic component visual inspection system 1 according to this embodiment has a function of creating an electronic component inspection library for each component code set in the mounting information of the printed circuit board. Further, the electronic component visual inspection system 1 has a function of confirming the external shape inspection library associated with the component code and a function of confirming the component circuit number and the like (constant inspection library) associated with the component code. ..

Next, the display screen of the display unit 29 constituting the electronic component visual inspection device 2 when checking the electronic component inspection library by the electronic component visual inspection system 1 will be described. FIG. 7 is an example of a display screen of the display unit 29 of the electronic component appearance inspection device 2 shown in FIG. 2, and is a diagram showing an example of an electronic component inspection library editing screen.

As shown in FIG. 7, the display screen 30 of the display unit 29 constituting the electronic component visual inspection device 2 displays a first display area 31 for displaying a component code list and a component circuit number list, and a mounting image of the component circuit number. It is composed of a second display area 32, a third display area 33 for displaying the items of the external shape inspection library and the constant inspection library, and a fourth display area 34 for displaying the judgment value and the allowable value which are the judgment contents. In the example shown in FIG. 7, the case where the “printed circuit board name” shown in FIG. 4 is “PCB001” is shown, and “printed circuit board inspection program name: PCB001” is displayed at the top of the display screen 30. There is.

As shown in FIG. 7, the mouse pointer has selected "003" (A01) in the part code list in the first display area 31 from the input unit 28 such as a mouse by the user, and is selected at this time. The component circuit number associated with the component code "003" (A01) is displayed. As the initial value (initial state), the component circuit number at the top of the component circuit number list is selected, and the mounting image of the selected component circuit number is displayed.

The mounting image of the component circuit number image (C01) is displayed in the second display area 32 shown in FIG. 7, and the unique number “003” written on the upper part of the component indicates the position where the component circuit number image (C01) should be mounted. It is displayed in a state deviated from the dotted line part.

Further, it shows a state in which "misalignment inspection", which is an item of the external inspection library, is selected as an inspection item in the third display area 33. In addition, the items of the external inspection library include, for example, "presence / absence inspection" (presence / absence inspection of external inspection library) and "solder inspection". Further, there is "constant inspection" as an item of the constant inspection library, and the item of the external inspection library and the item of the constant inspection library are divided in this way. The CAD data external inspection library is associated with the external inspection library, and the CAD data constant inspection library is associated with the constant inspection library.

Further, in the example shown in FIG. 7, the deviation amount X and the deviation amount Y are displayed as the "judgment value" of the selected "deviation inspection" described above in the fourth display area 34, and the respective "allowable values" are displayed. ing.

When the electronic component inspection system 1 creates and edits an electronic component inspection library, it creates and edits the "allowable value" in the determination value column displayed in the inspection library. At this time, if the created and edited inspection library is an external inspection library, not only the part code for which the electronic component inspection library was created and edited, but also the component code associated with the corresponding external inspection library with the same name. Edit the tolerances for all.
Specifically, for example, if it is determined that the allowable value of 100 μm (the reasonably acceptable range of the amount of positional deviation at the time of mounting) is not 75 μm, it is determined that the component code is defective. The permissible value is corrected (edited) from 100 μm to 75 μm. As described above, in the electronic component visual inspection system 1 according to the present embodiment, the electronic component inspection library is used for the external inspection to confirm whether the electronic component is mounted at the correct position and the constant inspection to confirm whether the electronic component is mounted correctly. It is possible to correct the allowable value in the external inspection for all the component codes that are divided and have the same shape, and it is possible to shorten the time for changing the allowable value.

As described above, according to the present embodiment, it is possible to provide an electronic component appearance inspection system capable of improving the efficiency of creating an electronic component inspection library and shortening the work time for changing the allowable value of the electronic component inspection library.
In addition, when creating an electronic component inspection library using an electronic component visual inspection system, the electronic component inspection library is divided into an external inspection that confirms whether the electronic component is mounted in the correct position and a constant inspection that confirms that the correct electronic component is mounted. As a result, the efficiency of creating the electronic component inspection library is improved, and at the same time, when the allowable value is reviewed in the electronic component inspection library of the external inspection unit that checks the outer shape and soldering state of the electronic component, the electronic component inspection is performed. When a mistake in creating a library is discovered, the allowable value can be applied to a plurality of electronic components simply by reviewing the library of the target external inspection unit, and the editing time can be shortened.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations.

1 ... Electronic component visual inspection system 2 ... Electronic component visual inspection device 3 ... Upper server 4 ... Storage device 21 ... Data acquisition unit 22 ... Judgment unit 23 ... Storage unit 24 ... Input I / F
25 ... Display control unit 26 ... Communication I / F
27 ... Internal bus 28 ... Input unit 29 ... Display unit 30 ... Display screen 31 ... First display area 32 ... Second display area 33 ... Third display area 34 ... Fourth display area

Claims (3)

A higher-level server that creates and transmits CAD data, an electronic component visual inspection device that inspects the appearance of electronic components using the CAD data transmitted from the higher-level server, and CAD data converted by the electronic component visual inspection device. It is equipped with a storage device that stores the data of the board information unit and the mounting information unit as an electronic component visual inspection library.
The electronic component visual inspection library includes an external inspection library that holds the external shape information of the mounting information unit associated with the component code, and a constant inspection library that holds the constant information of the mounting information unit associated with the component code. Equipped with
An electronic component visual inspection system characterized by being able to edit external information in the external inspection library specified by a component code and constant information in a constant inspection library specified by a component code . The electronic component visual inspection system according to claim 1 .
The electronic component visual inspection device has a display unit and has a display unit.
The display screen of the display unit has a first display area for displaying a list of component codes and a list of component circuit numbers, a second display area for displaying a mounting image of component circuit numbers, and items for external inspection and constant inspection. An electronic component visual inspection system comprising a third display area to be displayed and a fourth display area for displaying determination values and allowable values which are determination contents. The electronic component visual inspection system according to claim 2 .
When the allowable value displayed in the fourth display area is corrected, the electronic component visual inspection device corrects the other electronic component having the same component code as the component code of the electronic component whose allowable value is modified. An electronic component visual inspection system characterized by applying later tolerances.

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