JP5594886B2 - Component mounting line management device - Google Patents

Description

  The present invention relates to a component mounting line management apparatus in which a plurality of mounting machines are arranged.

  In general, a component mounting line for mounting a large number of components on a circuit board is configured by arranging a plurality of mounting machines along the circuit board transport path. When one mounting machine stops operating, component mounting The entire line will be shut down. Therefore, how to shorten the stop time of the mounting machine is an important issue for securing productivity.

  An image processing error is a typical cause of mounting machine stoppage. In general, a mounting machine captures a component sucked by a suction nozzle with a camera, compares the component image with image processing data created in advance, and determines a non-defective product / defective product.

  Theoretically, once image processing data is created, it can be used permanently, but in reality, when the lot or manufacturer of the image processing target part changes, the shape of the image processing target part There is a case where the image processing data needs to be corrected by changing the size little by little. For this reason, if the image processing data is not corrected when the lot or manufacturer of the image processing target component is changed, an image processing error may occur and the operation of the mounting machine may stop.

  Therefore, in Patent Document 1 (Japanese Patent Laid-Open No. 2008-218706), when an image processing error occurs, an error message and an error image are displayed on the display unit provided in the mounting machine, so that the operator can If you look at the display, you can check the error occurrence status of the mounting machine.

JP 2008-218706 A

  However, if an image processing error occurs in one of the multiple mounting machines that make up the component mounting line, the mounting machine in which the image processing error has occurred is searched from the multiple mounting machines, and the display unit of the mounting machine It is necessary to check the error occurrence status from the display, and the operator goes back and forth between the mounting machine and the server that manages the data of the entire component mounting line to correct the image processing data and restart the production. is there. For this reason, the work efficiency for correcting the image processing data and restarting the production is poor, and there is a drawback in that the production efficiency is lowered due to the time taken to recover the image processing error.

  Therefore, a problem to be solved by the present invention is to provide a component mounting line management apparatus capable of improving the production efficiency.

In order to solve the above-described problem, an invention according to claim 1 is directed to a component mounting line management apparatus in which a plurality of mounting machines are arranged, a server connected to the plurality of mounting machines via a network, and the server. A display device connected to the server, wherein the server receives information on an error that has occurred in each mounting machine and displays the information on the display device, and an operator looks at the display on the display device to display the error. A component mounting line management apparatus having a function capable of executing a work to be restored from a server, wherein the error information received by the server is information on an image processing error that has occurred in the image processing executed by each mounting machine The server has a function of displaying an error image and an image processing result on the display device as information on the image processing error, and an operator modifies the image processing data by viewing the display on the display device. A function for transmitting the corrected image processing data to the mounting machine in which the image processing error has occurred and restarting the production of the mounting machine, and if the error image does not include a component, the image processing error And a function of instructing the generated mounting machine to transmit after confirming whether or not the component supply device is out of components. With this configuration, operations from monitoring the error occurrence status of each mounting machine to error recovery can be performed collectively only on the server side, reducing the work time from mounting machine error occurrence to production restart. Production efficiency can be improved.

In the present invention, the error information receiving server, but Ru information der image processing errors in the image processing executed by each mounter, which is typical stop cause the mounting machine with the image processing error Because there is .

In the first and third aspects of the invention, the server has a function of displaying an error image and an image processing result on the display device of the server as information on the image processing error, and the operator views the display on the display device of the server. a function for correcting the image processing data, and transmits the image processing data obtained by correcting the mounter image processing error has occurred and configured to include a function to resume production of the mounter. In this way, operations from the monitoring of the image processing error occurrence status of each mounting machine to the correction of the image processing data and the resumption of production can be performed efficiently and collectively only on the server side.

By the way, the cause of the occurrence of the image processing error may be due to the component supply device running out of parts, the suction nozzle component suction error, or the component supply device failure. Therefore, in the invention according to claim 1, the server confirms and transmits the component supply device whether or not the component supply device has run out to the mounter in which the image processing error has occurred when the component is not shown in the error image. It is as arrangement of indicator functions. In this way, it is possible to confirm on the server side whether or not the cause of the image processing error is a component out of the component supply device, and the image processing error can be restored efficiently.

According to a second and third aspect of the present invention, the server images the component supply state of the component supply apparatus with respect to the mounting machine in which an image processing error has occurred when no component is reflected in the error image, and the image A configuration having a function of instructing to transmit data may be employed. In this way, even if an image processing error occurs due to a component picking mistake or a component supply device failure, the operator looks at the image of the component supply state of the component supply device displayed on the display device of the server, and It can be confirmed whether the cause of the processing error is due to a component suction error of the suction nozzle, a failure of the component supply device, or a component shortage, and the image processing error can be restored efficiently.

Moreover, as of claim 4, the server or the mounting apparatus, displays the result of the prediction to the server of the display device to predict the likelihood of an image processing error occurred based on the result of image processing performed on each mounting machine The server includes a function of correcting the image processing data by looking at the prediction result of the image processing error occurrence displayed on the display device, and generating the image processing error of the corrected image processing data. It is good also as a structure provided with the function to transmit to the mounting machine by which this was estimated. In this way, before an image processing error occurs in any of the mounting machines, the possibility of the image processing error occurring is predicted, and the image processing data is corrected in advance to prevent the image processing error from occurring. It is possible to prevent production stoppage due to an image processing error.

FIG. 1 is a block diagram schematically showing the configuration of a network that connects a plurality of mounters and servers in Embodiment 1 of the present invention. FIG. 3 is a diagram illustrating a display example (No. 1) of the display device when an image processing error in FIG. 2 occurs. FIG. 4 is a diagram illustrating a display example (part 2) of the display device when an image processing error in FIG. 3 occurs. FIG. 4 is a flowchart illustrating the flow of the image processing error recovery processing program executed by the server according to the first embodiment. FIG. 5 is a flowchart illustrating the flow of processing of the image processing data correction program executed by the server according to the second embodiment before the occurrence of an image processing error. FIG. 6 is a block diagram schematically illustrating the configuration of a network connecting a plurality of mounters and servers according to the third embodiment.

  Hereinafter, three embodiments 1 to 3 embodying the mode for carrying out the present invention will be described.

A first embodiment of the present invention will be described with reference to FIGS.
First, the configuration of the entire component mounting line management apparatus will be described with reference to FIG.
In the first embodiment, it is composed of two component mounting lines A and B. Each of the component mounting lines A and B has a plurality of mounting machines A1 to A5 and B1 to B5 arranged along the conveyance path of the circuit board. Configured. A network that connects each of the mounting machines A1 to A5, B1 to B5 and the server 11 that manages the data is composed of a star-type LAN (local area network) concentrated by the switching hub 12, and communicates by TCP / IP. Is supposed to do. In this case, in order to transmit large-capacity image data, for example, a star LAN is configured using a high-speed category 6 cable (1000BASE-T).

  The server 11 is equipped with a plurality of CPUs (two CPUs 1 and 2 in the first embodiment) in order to perform large-capacity data processing. At the time of image data transmission, large-capacity data transmission is performed at high speed by performing compression communication using a deflate reversible data compression algorithm (RFC1951).

Asynchronous transmission is performed to the server 11 from a plurality of mounters A1 to A5 and B1 to B5 under management. The transmission data is stored in the server 11 in a first-in first-out (FIFO) queue. Data processing software such as an image processing error recovery processing program of FIG. 4 to be described later is installed in a storage device such as a hard disk device built in the server 11. This data processing software uses a producer / consumer pattern and sequentially processes the data stored in the queue in parallel using a plurality of CPUs (two CPUs 1 and 2 in the first embodiment).
The server 11 is connected to a display device 13 such as a liquid crystal display or a CRT, and the data processing result of the server 11 is displayed on the display device 13.

  When an image processing error occurs in any of the plurality of mounting machines A1 to A5 and B1 to B5, the mounting machine in which the image processing error has occurred sends the error image and the image processing result to the server 11 as image processing error information. Send. At this time, the mounting machine continues to suck the component in which the image processing error has occurred to the suction nozzle without discarding it.

  The server 11 displays the received error image and the image processing result on the display device 13, and notifies the operator by a warning sound or a warning light. 2 and 3 show display examples of the display device 13 when an image processing error occurs. “Error” displayed on the display device 13 means that an image processing error has occurred.

  As shown in FIG. 2, when an image of a part is displayed on the display device 13 as an error image, it may be necessary to correct the image processing data. The item “not corrected” is displayed so that the operator can select the item by operating the input device 14 such as a mouse or a keyboard. When the operator selects “correct”, the operator operates the input device 14 while viewing the error image (the image of the component when the image processing error occurs), and the image processing data is displayed on the screen of the display device 13. Correct it. At this time, the server 11 performs image processing on the component error image using the corrected image processing data, determines the validity of the corrected image processing data, and displays the determination result on the display device 13. . As a result, the operator repeats the correction of the image processing data until the validity of the corrected image processing data can be confirmed, and at the stage where the validity of the image processing data has been confirmed, the corrected image processing data from the server 11 is imaged. It is transmitted to the mounting machine in which the processing error has occurred, and the production of the mounting machine is resumed.

  In addition, when the component image used for the past image processing is stored in the storage device and the validity of the corrected image processing data is confirmed, the image for the past component image is used using the corrected image processing data. A processing test may be performed to confirm the validity of the corrected image processing data. In this way, image processing data with higher robustness can be created.

The mounting machine that has resumed production uses the corrected image processing data to perform image processing again on the component that has been sucked by the suction nozzle.
On the other hand, when it is determined that the image processing data does not need to be corrected, “do not correct” is selected, and the production of the mounting machine is resumed. In this case, the mounting machine continues to use the image processing data at the time of occurrence of the image processing error, and performs image processing again on the component sucked by the suction nozzle.

  On the other hand, as shown in FIG. 3, when no component image is displayed in the error image display area of the display device 13, there is a possibility that the component supply device has run out of parts or the suction nozzle component suction error has occurred. Then, the display device 13 displays items such as “confirmation of parts shortage”, “resumption of production”, and “production stop” so that the operator can select the items by operating the input device 14. In this case, when the worker selects “confirm component failure”, the server 11 instructs the mounter in which an image processing error has occurred to confirm whether or not the component supply device is out of components and transmit it. When the mounting machine has a function of detecting a component out of the component supply device, a detection result indicating whether or not the component supply device is out of components is transmitted. When the component supply device is not out of components, the mounting machine captures the component supply state of the component supply device with a board mark camera or the like, and transmits the image data to the server 11.

  If the mounting machine does not have a function of detecting component breakage of the component supply device, the component supply state of the component supply device is imaged by a board mark camera or the like from the server 11 to the mounting device in which an image processing error has occurred. The image data may be instructed to be transmitted. Also in this case, the mounting machine captures the component supply state of the component supply apparatus with a board mark camera or the like, and transmits the image data to the server 11.

  The server 11 displays the received image data of the component supply state of the component supply device on the display device 13. As a result, the operator looks at the component supply status of the component supply device displayed on the display device 13 of the server 11, and the cause of the image processing error is the component suction error of the suction nozzle, the failure of the component supply device, or the component being out of service. It is possible to confirm whether it is due to any of the above.

  The processing when the image processing error occurs in the first embodiment described above is executed by the server 11 according to the image processing error recovery processing program of FIG. The image processing error recovery processing program in FIG. 4 is repeatedly executed during production. When this program is started, first, in step 101, image processing information transmitted from each mounting machine is received, and in the next step 102, the received image processing information is displayed on the display device 13. For example, when an image processing error has occurred due to the presence of component adsorption, as shown in FIG. 2, the screen of the display device 13 displays “Error”, component error image, “correct”, and “do not correct”. When an item is displayed and an image processing error has occurred with no part picked up, as shown in FIG. 3, the screen of the display device 13 displays “Error”, “Parts out check”, “Resume production”, “ The “production stop” item is displayed, and the part image is not displayed. Here, the presence / absence of the component is determined, for example, by determining the luminance average value of the image processing target area.

  Thereafter, the process proceeds to step 103, and it is determined whether the image processing result corresponds to the image processing success, the image processing error with component adsorption (FIG. 2), or the image processing error without component (FIG. 3). As a result, if it is determined that the image processing is successful, the program is terminated as it is.

  On the other hand, if it is determined in step 103 that there is an image processing error with component suction (FIG. 2), the process proceeds to step 104, and an inquiry is made to the operator as to whether or not to correct the image processing data (specifically, If the operator selects “correct” or “do not correct” on the screen of the display device 13), and the operator selects “correct”, the process proceeds to step 105, where the operator Waits until the image processing data is corrected on the screen of the display device 13 by operating the input device 14 of the server 11.

  After the correction of the image processing data, the process proceeds to step 106, where the corrected image processing data is transmitted to the mounting machine in which the image processing error has occurred, and in the next step 107, the mounting machine is instructed to resume production. At this time, before sending the corrected image processing data, the server 11 performs image processing on the error image of the component using the corrected image processing data, determines the validity of the corrected image processing data, and The determination result is displayed on the display device 13. Thereby, the operator repeats the correction of the image processing data until the validity of the corrected image processing data can be confirmed, and the corrected image processing data is mounted from the server 11 when the validity of the image processing data is confirmed. To the machine.

  On the other hand, if the operator selects “Do not modify” on the screen of the display device 13 in Step 104, the process proceeds to Step 107 without correcting the image processing data, and the mounting machine in which the image processing error has occurred is displayed. Instruct to resume production.

  If it is determined in step 103 that there is no part processing image processing error (FIG. 3), the process proceeds to step 108, and the operator selects “parts confirmation” or “production stop” on the screen of the display device 13. If the operator selects “confirm component failure”, the process proceeds to step 109, and the server 11 confirms that the component supply device is out of component with respect to the mounting machine in which the image processing error has occurred. Instruct to send it after checking the presence or absence.

  On the other hand, if it is determined in step 108 that the worker has selected “production stop”, the process proceeds to step 110, and the server 11 instructs the mounter in which an image processing error has occurred to stop production.

  According to the first embodiment described above, a function for displaying image processing error information on the display device 13 of the server 11 and a function for an operator to correct the image processing data by viewing the display on the display device 13 of the server 11. And the function of transmitting the corrected image processing data from the server 11 to the mounting machine in which the image processing error has occurred and restarting the production of the mounting machine is installed in the server 11, so that the image processing error occurrence status of each mounting machine From the monitoring of the image processing to the correction of the image processing data and the resumption of production can be performed efficiently only on the server 11 side, and the work time from the error of the mounting machine to the resumption of production can be shortened. Productivity can be improved.

  In addition, in the first embodiment, when the worker selects “Parts out check” on the screen of the display device 13 of the server 11, the server 11 supplies the component supply device to the mounting machine in which an image processing error has occurred. Since it is instructed to transmit after confirming the presence or absence of parts outage, it can be confirmed on the server 11 side whether or not the cause of the image processing error is out of parts in the part supply device. Error recovery work can be performed efficiently.

  In this case, when the operator selects “Parts Check” when an image processing error occurs, the component supply state of the component supply device is imaged by the board mark camera or the like from the server 11 to the mounting machine in which the image processing error has occurred. If the instruction is made to transmit the image data, the operator looks at the component supply state of the component supply device displayed on the display device 13 of the server 11, and the cause of the image processing error is the suction nozzle. It is possible to confirm whether this is due to a component adsorption error, a component supply device failure, or a component failure.

  In the first embodiment, when a component image is not displayed in the error image display area of the display device 13 of the server 11 (that is, when an image processing error with no component occurs), “part” The item “Check out of stock” is displayed, and only when the operator selects “Check out of component”, the mounter is instructed to check for out of component. However, the component image is displayed in the error image display area of the display device 13. May not be displayed (that is, when an image processing error with no component occurs), the server 11 may automatically instruct the mounter to confirm that the component has run out.

  In the second embodiment of the present invention, the image processing data correction program before the occurrence of the image processing error in FIG. 5 is installed in the storage device built in the server 11. Thereby, in addition to the functions described in the first embodiment, the server 11 predicts the possibility of the occurrence of an image processing error based on the result of the image processing executed by each mounting machine, and uses the prediction result of the server 11. A function for displaying on the display device 13, a function for an operator to correct image processing data by looking at a prediction result of image processing error occurrence displayed on the display device 13, and occurrence of an image processing error for the corrected image processing data. And a function of transmitting to the predicted mounting machine. Other matters are the same as those in the first embodiment.

Here, the prediction of the occurrence of an image processing error may be performed by one of the following methods.
[Prediction of image processing errors using statistical methods]
Data of image processing results of each mounting machine is accumulated, and an occurrence probability (or stability) of an image processing error is calculated using a statistical method.

  For example, when the dispersion value (variation) as a result of the positioning becomes large, it indicates that the image processing is not stable, so that the probability of occurrence of an image processing error is high. Therefore, the relationship between the dispersion value (variation) of the positioning result and the occurrence probability of the image processing error is set in advance in a table or the like, the dispersion value (variation) of the positioning result is calculated, and the positioning result An occurrence probability of an image processing error corresponding to the dispersion value (variation) may be calculated.

In addition, when a measurement value for non-defective product inspection or the like is in the vicinity of a threshold value for pass / fail judgment, the probability of occurrence of an image processing error is high. Therefore, the relationship between the difference between the measured value for the non-defective product inspection and the threshold value and the occurrence probability of the image processing error is set in advance in a table etc., and the difference between the measured value for the good product inspection etc. and the threshold value is calculated. An occurrence probability of an image processing error corresponding to the difference may be calculated.
[Prediction of image processing errors based on image similarity]
The image used when creating the image processing data or the image used in the past image processing is compared with the newly acquired image, and the higher the similarity between the two, the more stable image processing can be performed. Conversely, the lower the similarity, the higher the probability of an image processing error. Therefore, the image used when creating the image processing data or the image used in the past image processing is stored in the storage device, and the relationship between the similarity and the occurrence probability of the image processing error is previously stored in a table or the like. It is also possible to compare the image stored in the storage device with the newly acquired image, calculate the similarity between them, and calculate the probability of occurrence of an image processing error according to the similarity good.
The calculation of the occurrence probability of the image processing error may be performed by the server 11 or may be performed by each mounting machine.

  The prediction of the occurrence of the image processing error in the second embodiment described above is executed by the server 11 in accordance with the image processing data correction program before the occurrence of the image processing error in FIG. The image processing data correction program before occurrence of an image processing error in FIG. 5 is repeatedly executed during production. When this program is started, first, in step 201, the occurrence probability of an image processing error is calculated by the method described above. Thereafter, the process proceeds to step 202, where it is determined whether or not an image processing error will occur in the near future based on whether or not the probability of occurrence of an image processing error is higher than a predetermined threshold. If is less than or equal to the threshold value, it is predicted that no image processing error will occur in the near future, and the program is terminated as it is.

  On the other hand, if it is determined in step 202 that the occurrence probability of the image processing error is higher than the threshold value, it is determined that there is a high possibility that an image processing error will occur in the near future. Then, a notice of image processing error is displayed on the display device 13 of the server 11 in advance. Along with this notice display, the operator may be notified by a warning sound or warning light.

  Thereafter, the process proceeds to step 204 and waits until the operator operates the input device 14 of the server 11 to correct the image processing data on the screen of the display device 13. After the correction of the image processing data, the process proceeds to step 205, where the corrected image processing data is transmitted to the mounting machine determined that the probability of occurrence of the image processing error is higher than the threshold value, and this program is terminated.

  According to the second embodiment described above, the server 11 or each mounting machine predicts the possibility of an image processing error based on the result of image processing executed by each mounting machine, and the prediction result is stored in the server 11. The server 11 has a function to display on the display device 13, and the server 11 corrects the image processing data by looking at the prediction result of the image processing error occurrence displayed on the display device 13, and the corrected image processing data is converted into an image. Since it has a configuration with a function to transmit to the mounting machine where the occurrence of the processing error is predicted, before the image processing error occurs in any of the mounting machines, predict the possibility of the image processing error occurrence, Image processing data can be corrected in advance to prevent occurrence of an image processing error, production stoppage due to an image processing error can be prevented in advance, and productivity can be further improved.

  In the first and second embodiments, the network connecting the plurality of mounting machines A1 to A5 and B1 to B5 and the server 11 is configured as a star LAN. In the second embodiment of the present invention, as shown in FIG. In addition, a network connecting a plurality of mounting machines A1 to A5, B1 to B5 and the server 11 is configured by a bus LAN. Alternatively, the network may be configured with a ring LAN. Other matters are the same as those in the first embodiment or the second embodiment.

  In addition, the present invention is not limited to the first to third embodiments. For example, the number of mounting machines connected to the server 11 via a network is changed, the number of CPUs mounted on the server 11 is changed, and communication is performed. It goes without saying that various modifications can be made without departing from the scope of the invention, such as changing the protocol.

  DESCRIPTION OF SYMBOLS 11 ... Server, 12 ... Switching hub, 13 ... Display apparatus, 14 ... Input device, A1-A5, B1-B5 ... Mounting machine

Claims (4)

In the component mounting line management system that arranges multiple mounting machines,
A server connected to the plurality of mounting machines via a network;
A display device connected to the server,
The server has a function of receiving information on an error that has occurred in each mounting machine and displaying the information on the display device, and a function of enabling an operator to recover the error from the server by viewing the display on the display device A component mounting line management device comprising:
The error information received by the server is information on an image processing error that has occurred in the image processing executed on each mounting machine.
The server includes a function for causing the display device to display an error image and an image processing result as information on the image processing error, a function for an operator to correct image processing data by viewing the display on the display device, and a corrected image. A function for transmitting processing data to the mounting machine in which the image processing error has occurred and restarting production of the mounting machine, and a mounting machine in which the image processing error has occurred when no part is shown in the error image A component mounting line management device, comprising: a function for instructing the component supply device to check whether or not a component has run out and to transmit the component. The server instructs the mounter in which the image processing error has occurred to capture the component supply state of the component supply apparatus with the camera and transmit the image data when the component is not shown in the error image. The component mounting line management apparatus according to claim 1 , further comprising a function. In the component mounting line management system that arranges multiple mounting machines,
A server connected to the plurality of mounting machines via a network;
A display device connected to the server,
The server has a function of receiving information on an error that has occurred in each mounting machine and displaying the information on the display device, and a function of enabling an operator to recover the error from the server by viewing the display on the display device A component mounting line management device comprising:
The error information received by the server is information on an image processing error that has occurred in the image processing executed on each mounting machine.
The server includes a function for causing the display device to display an error image and an image processing result as information on the image processing error, a function for an operator to correct image processing data by viewing the display on the display device, and a corrected image. A function for transmitting processing data to the mounting machine in which the image processing error has occurred and restarting production of the mounting machine, and a mounting machine in which the image processing error has occurred when no part is shown in the error image A component mounting line management apparatus comprising a function of instructing to capture a component supply state of a component supply apparatus with a camera and to transmit the image data. In the component mounting line management system that arranges multiple mounting machines,
A server connected to the plurality of mounting machines;
A display device connected to the server,
The server or each mounting machine has a function of predicting the possibility of an image processing error occurrence based on the result of image processing executed by each mounting machine and displaying the prediction result on the display device,
The server has a function of correcting an image processing data by looking at a prediction result of the image processing error occurrence displayed on the display device by an operator, and the occurrence of the image processing error is predicted from the corrected image processing data. A component mounting line management device comprising a function of transmitting to a mounting machine.

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