JP6120863B2 - Operational status monitoring system for component mounters - Google Patents

Description

  The present invention relates to an operation status monitoring system for a component mounting machine that monitors the operating status of a component mounting machine that adsorbs a component supplied from a component supply apparatus to a suction nozzle and mounts the component on a circuit board.

  Patent Document 1 (Japanese Patent Application Laid-Open No. 2002-111298) describes an operation status analysis apparatus that analyzes an operation status of a component mounting line including a component mounting machine. This operation status analyzer accumulates operation time, trouble stop time / stop count, component outage stop time / stop count, suction count, suction error count, component recognition error count, etc., in the storage unit while the component mounting line is in operation. When the accumulated information is analyzed by a computer and it is found that the mounting operation of the component mounting machine has tact loss, the NC data for operating the component mounting machine is optimized so as to reduce tact loss. Like to do.

JP 2002-111298 A

  In the above Patent Document 1, the operation time, trouble stop time / stop count, component outage stop time / stop count, suction count, suction error count, component recognition error count, etc. are stored in the storage unit during operation of the component mounting line. If the accumulated information is analyzed by a computer and it is found that there is a tact loss in the mounting operation of the component mounting machine, the NC data for operating the component mounting machine is optimized so as to reduce the tact loss. However, when some trouble actually occurs, simply optimizing the NC data may not solve the root cause of the trouble. In this case, it is necessary for the worker to investigate the cause of the defect and perform work to improve it.

  For example, there is an error of several percent in the expected production time per component mounting board. One of the causes of this error is a delay time (hereinafter referred to as “re-suction operation time”) due to a re-suction operation that is executed when a component fails to be attracted to a suction nozzle of a component mounting machine (component suction failure). There is.

  However, since this re-suction operation time is managed by being included in the operating time of the component mounting machine (running time), the operator is responsible for the re-suction operation because of the error in the expected production time per component mounting board. I don't know if it's time.

  For example, in the case shown in FIG. 3 (in the case of a production job in which only one part is mounted), in the A pattern, after a part picking error occurs three times in succession, the part picking is performed in the fourth picking operation. However, in the B pattern, the component suction was successful in the first suction operation. Here, if it takes, for example, 2 seconds per suction operation, in the A pattern, component suction mistakes occur three times in succession, so the re-suction operation time is 6 seconds in total. In the pattern, since the component suction has succeeded in the first suction operation, the re-suction operation is not performed once, and the re-suction operation time is 0 second. For this reason, the expected production time of the A pattern is 6 seconds longer than that of the B pattern. However, since the re-adsorption operation time is included in the operating time (Running time), the operator is responsible for the cause of the error in the estimated production time. It is not known whether or not it is in the adsorption operation time, and appropriate treatment cannot be performed.

  Therefore, the problem to be solved by the present invention is to make it easy for the operator to know the delay time due to the delay event when an event that delays the cycle time occurs during operation of the component mounter. .

In order to solve the above-described problems, the present invention provides a component mounting machine operating status monitoring system that monitors the operating status of a component mounting machine that sucks a component supplied from a component supply device to a suction nozzle and mounts the component on a circuit board. delay event detection for detecting an abnormal delay event of component suction operation when the component mounting apparatus is operating in the cycle time (operating time) is an event of delaying the component suction operation of the suction nozzle abnormality has occurred And a display device that displays a monitoring result of the operating status of the component mounting machine as an operating status report, and a component suction operation of the suction nozzle detected by the delay event detecting means in a display item of the operating status report delay time (hereinafter "re-adsorption operation time" hereinafter) component mounter operating which is adapted to include information about by re-adsorption action to be performed for the abnormality In this situation monitoring system, the delay event detection means classifies and detects abnormalities in the component suction operation of the suction nozzle by cause, and the display item of the operation status report includes the component suction operation of the suction nozzle. Information on the re-adsorption operation time classified according to the cause of the abnormality is included.

In this configuration, the display item of the operation status report displayed on the display device includes information on the re-suction operation time that is a delay time due to the re-suction operation executed when the suction operation of the suction nozzle component that is a delay event is abnormal. Therefore, the operator can easily see the delay time (re-suction operation time) due to the re-suction operation, which is a delay event that occurred during the operation of the component mounter, by looking at the operation status report displayed on the display device. Thus, an appropriate action can be taken for the delayed event.

In this case, the delay event detected by the delay event detection means is an abnormality in the suction operation of the component of the suction nozzle, and the display item of the operation status report is based on the re-suction operation performed when the suction operation of the component in the suction nozzle is abnormal. because it contains information about between time of re-adsorption operation is the delay time, the operator, by viewing the availability report displayed on the display device, now re-adsorption operation time can be readily appreciated, the suction nozzle Appropriate measures can be taken for abnormalities in the component suction operation.

Further, the present invention is an abnormality of the component suction operation of the suction nozzle, by cause, at least, the failure of the component suction, heterologous components of adsorption detected abnormally classification component suction posture, the display items Availability Includes information on the re-suction operation time when the component suction has failed, information on the re-suction operation time when the dissimilar component is suctioned, and information on the re-suction operation time when the component suction posture is abnormal It is good to make it. In this way, the operator can easily see whether the component suction operation abnormality corresponds to a component suction failure, a foreign component suction, or a component suction posture abnormality by looking at the operation status report. Thus, it is possible to investigate and improve in advance the cause of an unexpected error stop that may occur when the re-adsorption operation time increases in the future.

  Further, as one of the abnormalities of the component suction operation of the suction nozzle, an illumination abnormality at the time of imaging the component is detected, and the display item of the operation status report includes information on the re-suction operation time due to the illumination abnormality at the time of component imaging. You may do it. In this way, the operator can easily understand the re-adsorption operation time due to the illumination abnormality at the time of component imaging by viewing the operation status report, and take appropriate measures against the illumination abnormality at the time of component imaging. It can be carried out.

  The display items of the operation status report may include the number and / or occurrence rate of the re-suction operation, and the ratio of the re-suction operation time to the operation time of the component mounting machine. In this way, it is possible to more accurately predict the possibility of an unexpected error stop that may occur in the future.

FIG. 1 is a longitudinal sectional view showing a configuration of a main part of a component mounter showing an embodiment of the present invention. FIG. 2 is a block diagram schematically showing the configuration of the control system of the component mounter. FIG. 3 is a diagram showing two operation patterns in the case where a component suction operation is performed in a production job in which only one component is mounted. FIG. 4 is a diagram showing a display example of the operation status report. FIG. 5 is a diagram showing a display example of detailed information for each cause of the re-adsorption operation.

Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described.
First, a schematic configuration of the whole component mounter will be described with reference to FIGS. 1 and 2.

  The X-axis slide 11 is provided so as to be slidable in the X-axis direction (left-right direction in FIG. 1) by the X-axis ball screw 12, and the Y-axis slide 13 is moved by the Y-axis ball screw 14 relative to the X-axis slide 11. It is provided so as to be slidable in the Y-axis direction (perpendicular to the plane of FIG. 1). The X-axis ball screw 12 and the Y-axis ball screw 14 are driven by an X-axis motor 15 (see FIG. 2) and a Y-axis motor 16 (see FIG. 2), respectively.

  The Y-axis slide 13 is provided with a mounting head 17, and a suction holder 18 is provided on the mounting head 17 so as to be movable up and down in the Z-axis direction (vertical direction) via a Z-axis drive mechanism (not shown). A suction nozzle 19 is attached to the suction holder 18 downward. The Z-axis drive mechanism is driven by a Z-axis motor 20 (see FIG. 2).

  On the other hand, the X-axis slide 11 is provided with a camera 23 facing downward from the lower surface side of the part sucked by the suction nozzle 19 via a pair of reflecting mirrors 21 and 22. A ring-shaped illumination device 24 for illuminating the component sucked by the suction nozzle 19 from the lower surface side is provided above the reflecting mirror 21 positioned below the component sucked by the suction nozzle 19.

  As shown in FIG. 2, the component mounter control device 31 includes an input device 32 such as a keyboard, a mouse, and a touch panel, a display device 33 such as a liquid crystal display and a CRT, a component mounting control program, image processing data, and the like. Is connected. The display device 33 displays an operation status report representing the monitoring result of the operation status of a component mounter, which will be described later. In addition, the component mounter is provided with a substrate transport device 35 that transports the circuit board, a component supply device 36 that supplies components to be mounted on the circuit board, and the like.

  The control device 31 controls the operation of adsorbing the component supplied from the component supply device 36 to the suction nozzle 19 and mounting the component on the circuit board while the component mounting machine is in operation. In the middle of moving upward, the part is imaged by the camera 23, and the captured image is processed to recognize the part. During this component recognition process, it is determined whether or not there is a component suction error (component suction failure) based on whether the component cannot be recognized, and the component suctioned by the suction nozzle 19 is designated in the production job. It is determined whether the part is a different type of part (a different kind of part), and further, whether the part suction posture is normal or abnormal (for example, oblique suction, standing suction, etc.) is determined. Moreover, the presence or absence of illumination abnormality (imaging defect) of the illuminating device 24 is determined.

The control device 31 functions as a delay event detection unit that detects a delay event when an event that delays the cycle time (operation time) occurs during operation of the component mounter. In the present embodiment, the delay event is an abnormality in the component suction operation of the suction nozzle 19, specifically, a component suction error, a suction of a different type of component, a component suction posture error, and an illumination error during component imaging. When any of these is detected, a re-suction operation (retry) for re-sucking the component to the suction nozzle 19 is executed. This re-suction operation is repeatedly executed until it is confirmed from the captured image of the camera 23 that the part has been normally suctioned by the suction nozzle 19.

  The control device 31 monitors the operating status of the component mounting machine and displays the monitoring result on the display device 33 as an operating status report. As shown in FIG. 4, the display items of the operation status report display two types of stopped (Stopped) states (Idle) and operation stopped (Stopped), and three types of running (Running) ) Displays the state of operation (Running), board transfer (Loading), and re-sucking operation (Retrying), and each of these display items is the time ratio of each display item to the operation time of the component mounter. (Time Rate) and time (Time) are displayed. The time ratio of each display item is also displayed in a chart (Chart) such as a pie chart.

  Further, when the display item of the re-adsorption operation is clicked with the input device 32 such as a mouse, details for each cause of the re-adsorption operation are displayed as shown in FIG. In the present embodiment, as the cause of the re-suction operation, the component suction error, the suction of different parts, the illumination abnormality at the time of imaging the part, and the abnormality of the part suction posture are displayed. The number of occurrences of re-adsorption operation (Retry Count), time ratio (Time Rate), and re-adsorption operation time (Time) are displayed.

  The operation status of a component mounting machine may be monitored by a production management computer that manages the production of a component mounting line including the component mounting machine, and an operation status report is displayed on the display device of the production management computer. You may make it do. Even in this case, if the cause of the re-sucking operation is displayed by attaching the name, number, symbol, etc. of the component mounting machine in which the re-sucking operation has occurred, the operator can select the component mounting machine in which the re-suction operation has occurred. Can be easily identified.

  According to the present embodiment described above, the abnormality in the component suction operation is detected by classifying it into a component suction error, a foreign component suction, a component suction posture abnormality, and a lighting abnormality at the time of component imaging, and displayed on the display device 33. The display items of the operation status report include the re-suction operation time when a component suction error occurs, the re-suction operation time when a different part is suctioned, the re-suction operation time when the part suction posture is abnormal, Since the suction operation time is included, the operator can check the operation status report so that an abnormality in the component suction operation is detected. It becomes easy to determine which of the above-mentioned illumination anomalies, and it is possible to investigate and improve in advance the cause of an unexpected error stop that may occur when the re-adsorption operation time increases in the future.

  Note that the cause of the abnormality in the component suction operation displayed on the display device 33 is not limited to the four types of causes shown in FIG. 5, and three or less types or five or more types of causes are classified and detected and displayed. May be.

  In addition, it goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention, for example, by appropriately changing the configuration of the component mounting machine.

  DESCRIPTION OF SYMBOLS 17 ... Mounting head, 19 ... Adsorption nozzle, 21, 22 ... Reflector, 23 ... Camera, 24 ... Illuminating device, 31 ... Control device (delay event detection means), 32 ... Input device, 33 ... Display device, 34 ... Memory Device, 35 ... Board conveying device, 36 ... Part supply device

Claims (5)

In the component mounter operating status monitoring system that monitors the operating status of the component mounter that sucks the component supplied from the component supply device to the suction nozzle and mounts it on the circuit board.
A delay event detecting means for detecting an abnormality of the component suction operation as a delay event when an abnormality of the component suction operation of the suction nozzle, which is an event of delaying a cycle time during operation of the component mounter;
A display device for displaying a monitoring result of the operating status of the component mounting machine as an operating status report;
In the display item of the operation status report, information on a delay time (hereinafter referred to as “re-suction operation time”) due to a re-suction operation executed when the suction-part suction operation of the suction nozzle detected by the delay event detection unit is abnormal. An operating status monitoring system for a component mounter included ,
The delay event detecting means classifies and detects abnormalities in the component suction operation of the suction nozzle by cause,
The operation status monitoring system for a component mounting machine , wherein the display items of the operation status report include information on re-suction operation time classified according to the cause of abnormality of the component suction operation of the suction nozzle . The delay event detection means, an abnormality of the component suction operation of the suction nozzle, by cause, at least, the failure of the component suction, heterologous components of adsorption detected abnormally classification component suction posture,
The display items of the operation status report include information on the re-suction operation time when the component suction fails, information on the re-suction operation time when the different parts are suctioned, and re-suction when the component suction posture is abnormal The operation status monitoring system for a component mounter according to claim 1 , further comprising information on an operation time. The delay event detecting means detects an illumination abnormality during imaging of a component as one of the abnormalities of the component suction operation of the suction nozzle,
3. The component mounting machine operating status monitoring system according to claim 2 , wherein the display items of the operating status report include information on a re-adsorption operation time due to an illumination abnormality during imaging of the component. The component mounting machine operating status monitoring system according to any one of claims 1 to 3 , wherein the display items of the operating status report include the number and / or occurrence rate of the re-adsorption operation. The operating status of the component mounting machine according to any one of claims 1 to 4 , wherein the display item of the operating status report includes a ratio of the re-suction operation time to the operating time of the component mounting machine. Monitoring system.

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