JP2021019147A - Display device, surface mounter, and display method - Google Patents

Abstract

To facilitate the resolution of an adsorption error.SOLUTION: A display device (display unit 31A and control unit 30) that attracts a component E and displays information on a surface mounter 1 mounted on a printed circuit board P includes a display unit 31A and a control unit 30. The control unit 30 displays, on the display unit 31A, a temporal change in a value related to the operation amount of the device when a suction error occurs, and a temporal change in a value related to the operating amount of the device when a suction error has not occurred, for two or more devices related to the suction of component E among the plurality of devices constituting the surface mounter 1.SELECTED DRAWING: Figure 8

Description

The techniques disclosed herein relate to display devices, surface mounters, and display methods.

A surface mounter for mounting components on a workpiece such as a printed circuit board is composed of a plurality of devices, and a mounting error may occur due to a malfunction of any of the devices. For this reason, conventionally, it has been performed to support the resolution of implementation errors (see, for example, Patent Document 1). Specifically, in Patent Document 1, when it is detected that the tape feeder, which is one of the devices constituting the surface mounter, cannot normally feed the carrier tape in the feed direction, the carrier tape is set to the feed direction. Is described as trying to recover from a state in which the carrier tape cannot be sent normally by sending it in the opposite direction.

JP-A-2017-45791

In a surface mounter that holds parts and mounts them on a workpiece, a holding error may occur as one of the mounting errors. The technique described in Patent Document 1 described above supports the solution of a state in which the carrier tape cannot be normally fed in the feed direction, and it has not been studied to support the solution of a holding error.
This specification discloses a technique that facilitates resolution of retention errors.

(1) The display device disclosed in the present specification is a display device that holds parts and displays information about a surface mounter mounted on a work, and includes a display unit and a control unit, and the control unit. Is a temporal change in a value related to the amount of operation of the device when a holding error occurs for two or more devices related to holding the component among the plurality of devices constituting the surface mounter. , The time change of the value related to the operation amount of the device when the holding error does not occur is displayed on the display unit.

The "value related to the operating amount of the device" may be the operating amount of the device itself, or may be a value that changes according to the operating amount of the device. However, the value that changes according to the operating amount of the device may not change according to the operating amount of the device when a holding error occurs. The "value related to the operating amount of the device" can be rephrased as the "value correlated with the operating amount of the device".

Multiple devices are involved in holding parts. Therefore, when a retention error occurs, it is desirable to understand the operation of a plurality of devices in order to identify the cause (hereinafter, also referred to as "error cause"). Further, when a holding error occurs due to an abnormality in the operation of a certain device, an abnormality in the operation of another device may occur due to the abnormality in the operation of the device. In this case, since the abnormality in the operation of the other device is not an essential cause of the retention error, it is desirable to comprehensively judge the operation of the plurality of devices to identify the cause.

However, in general, the devices involved in holding parts are small and operate at invisible speed. Depending on the device, the operation may not be visible from the outside. Therefore, it is difficult for the operator of the surface mounter to visually identify the cause of the retention error by visually observing the operation of a plurality of devices. Therefore, there is a problem that it is difficult to solve the retention error.

According to the above display device, it is possible to visualize (so-called visualization) the difference between the operation when the holding error occurs and the operation when the holding error does not occur for two or more devices related to holding. In this way, the operator can easily grasp the device whose operation differs between when the holding error occurs and when the holding error does not occur, so that the operation of a plurality of devices can be comprehensively judged and held. It becomes easier to identify the cause of the error. Therefore, according to the above display device, it becomes easy to solve the retention error.

(2) The control unit simultaneously changes the time of the related value when a holding error occurs and the time change of the related value when a holding error does not occur for two or more of the devices. It may be displayed.

Displaying at the same time means displaying the above-mentioned temporal changes of each device so that the operator can see them at the same time, and is not limited to the case where the timing of starting the display of the above-mentioned temporal changes of each device is the same. In other words, displaying at the same time overlaps with the period during which the above-mentioned temporal change is displayed on the display unit for one device and the period during which the above-mentioned temporal change is displayed on the display unit for another device. Say that. The above-mentioned temporal changes of each device may be displayed in the same window of one display unit, may be displayed in different windows of one display unit, or may be displayed in different display units.

As described above, it is desirable to identify the cause of the retention error by comprehensively judging the operation of a plurality of devices. According to the above display device, since the above-mentioned temporal changes are simultaneously displayed for the two or more devices, it becomes easier to comprehensively judge the operation of the two or more devices and identify the cause of the holding error.

(3) The surface mounter includes a component supply device that sends the component to the component supply position, a mounting head that holds the component sent to the component supply position by negative pressure, and a head moving device that moves the mounting head. Two or more devices including a head elevating device for raising and lowering the mounting head and a negative pressure supply device for supplying negative pressure to the mounting head, and the two or more devices related to holding the component, include the component supply device and the head movement. At least two of the device, the head elevating device and the negative pressure supply device may be included.

According to the above display device, when a holding error occurs in at least two of the four devices (parts supply device, head moving device, head lifting device, and negative pressure supply device) related to holding parts. The operator can easily grasp whether or not the operation is different between that and when the retention error does not occur.

(4) From the time when the control unit is lowered to a height preset as a height at which the mounting head comes into contact with the component by the head elevating device, which is the period when the holding error does not occur. The period until the mounting head starts to rise may be further displayed on the display unit.

Retention errors often occur during the period described above. Therefore, if the above-mentioned period is further displayed, the operator can easily grasp the operation of each device during the above-mentioned period. Therefore, it becomes easier to identify the cause of the retention error.

(5) The control unit has a temporal change in the related value when a holding error occurs for two or more devices related to holding the component, and the related value when the holding error does not occur. The characteristics of the retention error may be determined from the temporal change of the above, and the cause of the error corresponding to the determined characteristics may be further displayed on the display unit.

According to the above display device, since the control unit displays the cause of the retention error, it becomes easier to resolve the retention error.

(6) The control unit may further display measures for eliminating the cause of the error on the display unit.

Depending on the factory using the surface mounter, measures to eliminate the cause of the error may be the know-how of the operator, and in the case of an unfamiliar operator, even if the cause of the error can be identified, measures to eliminate the cause of the error can be taken. There was something I didn't understand. According to the above display device, measures for eliminating the cause of the error are displayed, so that the holding error can be appropriately dealt with regardless of the skill of the operator.

(7) The control unit has a time change of the related value when a holding error occurs, a time change of the related value when a holding error does not occur, the cause of the error, and the countermeasure. May be displayed at the same time.

According to the above display device, it becomes easy for the operator to grasp the relationship between the operation of each device, the cause of the holding error, and the countermeasure.

(8) The control unit also serves as a control unit for the surface mounter, and if the countermeasure for eliminating the cause of the error is a countermeasure that can be automatically executed by the control unit, the countermeasure is executed. May be good.

Some of the measures to eliminate the cause of the retention error can be automatically executed by the control unit. According to the above display device, when the measure for eliminating the cause of the error is a measure that can be automatically executed by the control unit, the control unit executes the measure, so that the burden on the operator can be reduced.

(9) When the holding error occurs and the holding rate is lower than the threshold value, the control unit changes the time of the related value when the holding error occurs and when the holding error does not occur. The temporal change of the related value of the above may be displayed on the display unit.

Retention errors can also occur sporadically for some accidental cause. In that case, even if the time change is displayed on the display unit, it may be useless. On the other hand, when the retention rate is lower than the threshold value, it is considered that the retention error is constantly occurring. According to the above display device, when a retention error occurs and the retention rate is lower than the threshold value, the temporal change is displayed, so that unnecessary display can be suppressed.

The invention disclosed herein can be realized in various aspects such as devices, methods, computer programs for realizing the functions of these devices or methods, recording media on which the computer programs are recorded, and the like.

Top view of the surface mounter according to the first embodiment Front view of the head unit and head moving part Perspective view of component tape Side view of tape delivery device (partial cross-sectional view) Block diagram showing the electrical configuration of the surface mounter Schematic diagram for explaining the mounting of parts Graph showing the temporal change of the value related to the operating amount of each device when the following parts are mounted It is a schematic diagram of the screen displayed on the display unit by the control unit, and the temporal change of the value related to the operation amount of each device when the adsorption error occurs due to the poor feeding of the component tape and the adsorption error occur. Graph showing the temporal change of the value related to the operation amount of each device when there is no The temporal change of the value related to the operating amount of each device when the adsorption error occurs due to the negative pressure abnormality and the temporal change of the value related to the operating amount of each device when the adsorption error does not occur. Graph to represent The temporal change of the value related to the operation amount of each device when the suction error occurs due to the component handling abnormality and the temporal change of the value related to the operation amount of each device when the suction error does not occur. Graph to represent The time change of the value related to the operation amount of each device when the suction error occurs due to the position abnormality in the Z direction, and the time change of the value related to the operation amount of each device when the suction error does not occur. Graph representing Schematic diagram of a table in which the features appearing in the graph and the error causes and countermeasures corresponding to the features are associated.

<Embodiment 1>
The first embodiment will be described with reference to FIGS. 1 to 12. In the following description, the reference numerals of the drawings may be omitted for the same constituent members except for some parts.

(1) Overall Configuration of Surface Mounter The overall configuration of the surface mounter 1 will be described with reference to FIG. The surface mounter 1 is a device for mounting a component E such as an electronic component on a printed circuit board P (an example of a work). The surface mounter 1 includes a component mounting device 2 for mounting the component E on the printed circuit board P, and four tape component supply devices 3 (an example of the component supply device) for supplying the component E to the component mounting device 2. ..

(1-1) Parts mounting device The parts mounting device 2 includes a base 10, a conveyor 11, a head unit 12 (an example of a head lifting device), a head moving unit 13 (an example of a head moving device), a backup device (not shown), and 2 It includes three component imaging cameras 14, a substrate imaging camera 15, a control unit 30 (see FIG. 5) described later, an operation unit 31 (see FIG. 5), an ejector (an example of a negative pressure supply device) (not shown), and the like.

The base 10 has a rectangular shape in a plan view. The rectangular frame A shown by the alternate long and short dash line in FIG. 1 indicates a working position (hereinafter referred to as a working position A) when the component E is mounted on the printed circuit board P.
A backup device (not shown) is located below the working position A. The backup device is provided with a plurality of backup pins set at positions according to the type of the printed circuit board P, and when the printed circuit board P is conveyed to the working position A, the backup pins are raised to lower the printed circuit board P from below. To support.

The conveyor 11 carries the printed circuit board P from the upstream side in the X direction to the working position A, and carries out the printed circuit board P on which the component E is mounted at the working position A to the downstream side. The conveyor 11 includes a pair of conveyor belts 11A and 11B that circulate and drive in the X direction, a conveyor drive motor 42 that drives those conveyor belts (see FIG. 5), and the like. The rear conveyor belt 11A can be moved in the front-rear direction, and the distance between the two conveyor belts 11A and 11B can be adjusted according to the width of the printed circuit board P.

The head unit 12 is provided with a plurality of (five here) mounting heads 18. The configuration of the head unit 12 will be described later.
The head moving unit 13 moves the head unit 12 in the X direction and the Y direction within a predetermined movable range. The head moving unit 13 supports the head unit 12 so as to be reciprocally movable in the X direction, the beam 16, the pair of Y-axis guide rails 17 which support the beam 16 so as to be reciprocally movable in the Y direction, and the head unit 12 as X. It includes an X-axis servomotor 38 that reciprocates in the direction, a Y-axis servomotor 39 that reciprocates the beam 16 in the Y direction, and the like.

The two component imaging cameras 14 are provided between the two tape component supply devices 3 arranged in the X direction, respectively. The component imaging camera 14 is for recognizing the position of the component E with respect to the mounting head 18, the component shape, and the like by capturing an image of the component E attracted to the mounting head 18 (an example of holding) from below.
The substrate imaging camera 15 is provided in the head unit 12. The substrate imaging camera 15 is for imaging a fiducial mark (not shown) attached to the printed circuit board P.

The configuration of the head unit 12 will be described with reference to FIG. The head unit 12 shown in FIG. 2 is a so-called in-line type, and includes a plurality of mounting heads 18 provided side by side in the X direction, a Z-axis servomotor 40 (see FIG. 5) for individually raising and lowering the mounting heads 18, and a plurality of mounting heads 18. It is equipped with an R-axis servomotor 41 (see FIG. 5) that rotates the mounting head 18 all at once around the axis.

Each mounting head 18 sucks and releases the component E, and has a head shaft 18A and a suction nozzle 18B detachably attached to the lower end of the head shaft 18A. The head shaft 18A is connected to an ejector via an air supply path (not shown) such as an air hose, and a negative pressure is supplied from the ejector to the suction nozzle 18B via the head shaft 18A. Further, positive pressure is supplied to the suction nozzle 18B from a positive pressure supply source (not shown) via the head shaft 18A. The suction nozzle 18B sucks the component E when a negative pressure is supplied, and releases the component E when a positive pressure is supplied.
The above-mentioned air supply path is provided with a pressure sensor that measures the negative pressure supplied from the ejector.

Although the in-line type head unit 12 will be described here as an example, the head unit 12 may be, for example, a so-called rotary head in which a plurality of mounting heads 18 are arranged on the circumference.

(1-2) Tape Parts Supply Device First, the parts tape 19 will be described with reference to FIG. The component tape 19 is a tape accommodating a plurality of components E, and is a carrier tape 19B in which a plurality of accommodating recesses 19A are provided at equal intervals in the longitudinal direction, a component E accommodated in each accommodating recess 19A, and It has a top tape 19C that is attached to the carrier tape 19B to close the accommodating recess 19A. Feed holes 19D into which the teeth of the sprocket 22 provided in the feeder 20 (see FIG. 1), which will be described later, are inserted are provided on one side of the component tape 19 in the width direction at equal intervals along the length direction. There is.

As shown in FIG. 1, the tape component supply devices 3 are arranged at two locations arranged in the X direction on both sides of the conveyor 11 in the Y direction, for a total of four locations. A plurality of feeders 20 (an example of the device) are attached to these tape component supply devices 3 so as to be arranged side by side in the X direction. Each feeder 20 is a so-called tape feeder, and includes a reel on which the component tape 19 is wound (not shown), an electric tape delivery device 21 (see FIG. 4) for pulling out the component tape 19 from the reel, and the like. ..

As shown in FIG. 4, the tape delivery device 21 applies a sprocket 22 having teeth formed in the feed hole 19D of the component tape 19, a motor (not shown) for rotating the sprocket 22, and a rotational driving force of the motor. It includes a gear group 23 and the like that transmit to the sprocket 22. The tape feeding device 21 intermittently rotates the sprocket 22 to sequentially feed the parts E housed in the component tape 19 to the component supply positions S one by one.

Here, the tape component supply device 3 will be described as an example of the component supply device, but the component supply device may be a so-called tray feeder that supplies a tray on which the component E is placed, or a device that supplies a semiconductor wafer. It may be.

(2) Electrical Configuration of Component Mounting Device As shown in FIG. 5, the component mounting device 2 includes a control unit 30 and an operation unit 31. The control unit 30 includes an arithmetic processing unit 32, a motor control unit 33, a storage unit 34, an image processing unit 35, an external input / output unit 36, a feeder communication unit 37, and the like.

The arithmetic processing unit 32 includes a CPU, a ROM, a RAM, and the like, and controls each unit of the component mounting device 2 by executing a control program stored in the ROM.
The motor control unit 33 starts and stops each motor such as the X-axis servomotor 38, the Y-axis servomotor 39, the Z-axis servomotor 40, the R-axis servomotor 41, and the conveyor drive motor 42 under the control of the arithmetic processing unit 32. , And control the rotation speed.
The storage unit 34 is a rewritable storage device (hard disk or the like) in which data is not erased even when the power is turned off. Various data for controlling the mounting operation of the surface mounter 1 are stored in the storage unit 34. Various data include information on the number and types of printed boards P to be produced, information on mounting coordinates and mounting angles of component E, information on mounting order of component E, information on adsorption of component E, which will be described later. A table (see FIG. 12) and the like are included.

The image processing unit 35 is configured to capture image signals output from the component image pickup camera 14 and the substrate image pickup camera 15, and generates a digital image based on the output image signals.
The external input / output unit 36 is a so-called interface, and captures detection signals output from various sensors 43 (including a pressure sensor that measures the negative pressure supplied from the ejector) provided in the main body of the component mounting device 2. It is configured to be. Further, the external input / output unit 36 is configured to perform operation control on various actuators 44 (including ejectors) based on a control signal output from the arithmetic processing unit 32.
The feeder communication unit 37 is connected to each feeder 20 and controls a plurality of feeders 20 in an integrated manner.

The operation unit 31 includes a display unit 31A such as a liquid crystal display and an input unit 31B such as a touch panel, a keyboard, and a mouse. The operator can operate the operation unit 31 to make various settings and instruct the surface mounter 1 to operate.
The control unit 30 and the display unit 31A are examples of display devices.

(3) Mounting of components In FIG. 6, the circles 50 and 51 indicate the mounting positions on which the component E is mounted on the printed circuit board P. The state shown in FIG. 6 is a state immediately after the component E (for convenience, referred to as “previous component E”) is mounted at the mounting position indicated by the circle 50. In the state shown in FIG. 6, the mounting head 18 is located at the circle 50, and the vertical position of the mounting head 18 is the upper limit position of the movable range in the vertical direction. When the mounting of the previous component E is completed, the surface mounter 1 moves the mounting head 18 to the component supply position S of the tape delivery device shown in FIG. 4, sucks the next component E, and sucks the next component. Mount E at the mounting position indicated by the circle 51.

With reference to FIG. 7, the temporal change of the values related to the movement amounts of the feeder 20, the head moving unit 13, the head unit 12, and the ejector when the following component E described above is mounted will be described. The origin of the horizontal axis (time axis) of each of the graphs 60, 61, and 62 shown in FIG. 7 is the time immediately after the surface mounter 1 mounts the previous component E. In FIG. 7, during the period from the time point T1 to the time point T2, the mounting head 18 starts to rise from the time when the mounting head 18 is lowered to the height at which it comes into contact with the next component E sent to the component supply position S (time point T1). It shows the period until the time (time point T2). Here, the height at which the mounting head 18 contacts the component E is preset for each type of the component E, and is stored in the storage unit 34 as information regarding suction of the component E.

In the graph 60, the solid line 63 shows the temporal change of the amount of the component tape 19 delivered by the feeder 20 (hereinafter, referred to as “feed amount of the component tape 19”). The unit of the feed amount of the component tape 19 may be the number of drive pulses input to a motor (not shown) included in the tape delivery device 21, or the rotation speed (or rotation angle) of the motor. However, it may be the moving distance (millimeter) of the component tape 19 converted from the number of drive pulses. The feed amount of the component tape 19 is an example of a value related to the operation amount of the feeder 20.

After the previous component E is attracted by the mounting head 18, the feeder 20 sends out the component tape 19 to supply the next component E to the component supply position S. When the next component E reaches the component supply position S, the feeder 20 stops the feeding of the component tape 19 for a predetermined time. The predetermined time is set as the feed stop time described later.

In the graph 61, the solid line 64 shows the temporal change of the position of the mounting head 18 in the X direction. The unit of the position of the mounting head 18 in the X direction may be the number of drive pulses input to the X-axis servomotor 38, or the number of rotations (or rotation angle) of the X-axis servomotor 38. Alternatively, it may be an X coordinate converted from the number of drive pulses. The position of the mounting head 18 in the X direction is an example of a value related to the amount of movement of the head moving portion 13.

The solid line 65 shows the temporal change of the position of the mounting head 18 in the Y direction. The unit of the position of the mounting head 18 in the Y direction may be the number of drive pulses input to the Y-axis servomotor 39, or the number of rotations (or rotation angle) of the Y-axis servomotor 39. Alternatively, it may be the Y coordinate converted from the number of drive pulses. The position of the mounting head 18 in the Y direction is an example of a value related to the amount of movement of the head moving portion 13.

After the previous component E is mounted, the head moving unit 13 moves the mounting head 18 so that the mounting head 18 is located at the component supply position S in the XY direction by the time point T1, and the mounting head 18 is a component. When the supply position S is reached, the movement of the mounting head 18 in the XY direction is stopped for a predetermined time preset and stored in the storage unit 34. The predetermined time is set as the adsorption time described later, and is stored in the storage unit 34. Further, after the movement of the mounting head 18 in the XY direction is stopped, the negative pressure supplied from the ejector rises due to the adsorption of the component E, and the negative pressure measured by the pressure sensor reaches a preset pressure. The movement of the mounting head 18 in the XY direction may be started at.

The solid line 66 shows the temporal change of the position of the mounting head 18 in the Z direction. The unit of the position of the mounting head 18 in the Z direction may be the number of drive pulses input to the Z-axis servomotor 40, or the number of rotations (or rotation angle) of the Z-axis servomotor 40. Alternatively, it may be the Z coordinate converted from the number of drive pulses. The position of the mounting head 18 in the Z direction is an example of a value related to the amount of movement of the head unit 12.

After the previous component E is mounted, the head unit 12 lowers the mounting head 18 so that the mounting head 18 is lowered to a height at which the mounting head 18 contacts the next component E by the time point T1. The head unit 12 lowers the mounting head 18 to a height at which it comes into contact with the next component E, and then starts raising the mounting head 18 when a predetermined time preset and stored in the storage unit 34 elapses. The predetermined time is set as the adsorption time described later, and is stored in the storage unit 34. Further, after the mounting head 18 stops descending, the negative pressure supplied from the ejector rises due to the adsorption of the component E, and the mounting head reaches a preset pressure when the negative pressure measured by the pressure sensor reaches a preset pressure. You may start the ascent of 18.

In the graph 62, the solid line 67 shows the temporal change of the negative pressure supplied from the ejector to the mounting head 18. The negative pressure is measured by the negative pressure sensor. Negative pressure is an example of a value related to the amount of operation of the ejector. When a suction error occurs, the negative pressure does not necessarily change according to the operating amount of the ejector.

The ejector supplies a positive pressure to release the previous component E, and then increases the negative pressure to attract the next component E. When the mounting head 18 descends to a height at which it contacts the next component E, that is, a height at which the next component E is attracted, the opening of the suction nozzle 18B is closed by the next component E, so that the head shaft 18A is sealed. Negative pressure rises from open level to closed level. The ejector continues to supply negative pressure until the next component E reaches the mounting position, and when the next component E reaches the mounting position, supplies positive pressure to release the component E.

(4) Suction error resolution support processing The suction error refers to an error in which the suction of the component E fails and an error in which the component E falls while the suctioned component E is being transported to the mounting position.
The control unit 30 sucks the component E by the mounting head 18, and then images the component E from below by the component imaging camera 14. The control unit 30 determines whether or not the component E is adsorbed on the mounting head 18 by analyzing the captured image, and if the component E is not adsorbed and is not imaged, an adsorption error has occurred. to decide. When the negative pressure becomes less than the sealing level after the component E is sucked and before the component E is mounted at the mounting position (that is, the component E drops from the mounting head 18 while the head unit 12 is moving). If this is the case), it is also judged that an adsorption error has occurred. It is also determined that a suction error has occurred when the negative pressure does not reach the sealing level after the suction operation is completed (for example, when the suction posture of the component E is oblique).

The adsorption error resolution support process is a process that assists the operator in solving the adsorption error when the adsorption error occurs. As shown in FIG. 8, in the adsorption error resolution support process, the control unit 30 displays the screen 70 on the display unit 31A. The screen 70 has a graph display column 71 and a cause / countermeasure display column 72.

(4-1) Graph display column Three graphs are displayed in the graph display column 71. Graph 73 is a graph of the feed amount of the component tape 19. The solid line 76 is the time change of the feed amount of the component tape 19 when the feed of the component tape 19 is delayed and a suction error occurs, and the dotted line 77 is the case where the feed of the component tape 19 is normal and the suction error does not occur. It shows the time change of the feed amount of the component tape 19 of.

Graph 74 is a graph of the position in the XYZ direction when the mounting head 18 sucks the component E. The solid lines 78, 79, and 80 indicate that a suction error occurred due to the delay in feeding the component tape 19, but the temporal change in the position of the mounting head 18 in the XYZ direction was normal. Although it is not visible over the solid line 78 in FIG. 8, the temporal change in the position of the mounting head 18 in the XYZ direction when the temporal change in the position of the mounting head 18 in the XYZ direction is normal is displayed by a dotted line. There is.
Graph 75 is a graph of the negative pressure supplied by the ejector. The solid line 81 represents the temporal change of the negative pressure when the adsorption error occurs, and the dotted line 82 represents the temporal change of the negative pressure when the adsorption error does not occur.

When the component E is mounted on one printed circuit board P, the control unit 30 detects values related to the operating amount of each device for all the components E at predetermined time intervals and stores them in the storage unit 34. .. In each graph, the temporal change (temporal change indicated by the dotted line) of the value related to the operating amount of each device when the adsorption error does not occur is that the adsorption error has occurred in the past for the component E in which the adsorption error has occurred. It is a graph of the values when implemented without occurring.

The relationship between the cause of the adsorption error and the graph will be described. Adsorption errors occur for a variety of reasons. Here, as the causes of the suction error, poor feeding of the component tape 19, negative pressure abnormality, component handling abnormality, and position abnormality in the Z direction will be described as examples. A suction error may occur due to a position abnormality in the XY direction, but since it is rare that a position abnormality in the XY direction usually occurs, the description of the position abnormality in the XY direction is omitted here.

(A) Feeding error of component tape In the example shown in FIG. 8, when the mounting head 18 is lowered to a height in contact with component E in the feed amount graph 73 and the negative pressure graph 75 of the component tape 19 (time point T1). During the period from when the mounting head 18 starts to rise (time point T2), there is a difference in the temporal change between when the suction error occurs and when the suction error does not occur. The graph 74 of the position in the XYZ direction does not make a difference.

Looking at the feed amount of the component tape 19, it can be seen that the component E to be sucked has not reached the component supply position S when the mounting head 18 is lowered to a height in contact with the component E. From this, it can be seen that the feeding of the component tape 19 is delayed. Regarding the negative pressure, there is a difference in the temporal change, but since the negative pressure rises to the open level when the mounting head 18 drops to the height where it contacts the next component E, there is a problem with the negative pressure. It can be said that there is no such thing. Therefore, in the example shown in FIG. 8, it is considered that the cause of the suction error was the poor feeding of the component tape 19, and the negative pressure did not rise to the sealing level due to the suction error generated by the feeding error.

(B) Negative pressure abnormality In the example shown in FIG. 9, in the negative pressure graph 75, when the mounting head 18 starts to rise from the time when the mounting head 18 descends to a height in contact with the component E (time point T1) (time point). During the period up to T2), there is a difference in the temporal change of the negative pressure between when the adsorption error occurs and when it does not occur. Specifically, the negative pressure rises to the open level when the mounting head 18 drops to the height where it contacts the component E, but the negative pressure rises to the reference level (opening / closing level) when the mounting head 18 starts rising. Has not risen to a predetermined negative pressure level) set between and the sealing level. There is no difference between the graph 73 of the feed amount of the component tape 19 and the graph 74 of the position in the XYZ direction. From this, it can be seen that there is an abnormality in the negative pressure. Therefore, in the example shown in FIG. 9, it is considered that the cause of the adsorption error is a negative pressure abnormality.

(C) Component handling abnormality The component handling abnormality means that the component E is attracted by the mounting head 18, but the component E falls while the component E is being conveyed to the mounting position. Further, if the ascending speed of the mounting head 18 is too fast, the component E cannot follow and falls, which may cause a component handling abnormality.

In the example shown in FIG. 10, in the negative pressure graph 75, after the mounting head 18 starts to rise at the time point T2, there is a difference in temporal change between when a suction error occurs and when a suction error does not occur. It is happening. Specifically, when the suction error occurs, the negative pressure drops sharply after the mounting head 18 starts to rise, as compared with the case where the suction error does not occur. There is no difference between the graph 73 of the feed amount of the component tape 19 and the graph 74 of the position in the XYZ direction. From this, it can be seen that the part E, which was once normally adsorbed, fell during transportation. Therefore, in the example shown in FIG. 10, it is considered that the cause of the suction error is a component handling abnormality.

(D) Position abnormality in the Z direction The position abnormality in the Z direction means that the mounting head 18 is not normally lowered or raised.
In the example shown in FIG. 11, in the graph of the position in the Z direction, the suction error occurs during the period from the time when the mounting head 18 starts descending to the time when the mounting head 18 descends to the height where it contacts the component E (time point T1). There is a difference in temporal change between when (solid line 66) and when it does not occur (dotted line 83). In the example shown in FIG. 11, there is a difference in the negative pressure graph 75. There is no difference between the graph of the feed amount of the component tape 19 and the graph of the position in the XY direction.

Looking at the graph of the position in the Z direction, when a suction error occurs, the lowering of the mounting head 18 is initially set in advance as compared with the case where the suction error does not occur as shown by the solid line 66. Starting from the speed, the speed of descent gradually increases, and the mounting head 18 suddenly descends from the middle. However, the time when the mounting head 18 is lowered to the height where it comes into contact with the component E is later than when the suction error does not occur. From this, when the mounting head 18 was lowered, the head shaft 18A was caught due to insufficient grease or the like, and then the catch was resolved and the mounting head 18 was suddenly lowered, but the lowering was not in time and the position in the Z direction was reached. It turns out that there was a delay.

Regarding the negative pressure, there is a difference in the change with time, but it can be said that there is no problem with the negative pressure because it rises to the open level when the mounting head 18 drops to the height where it contacts the next component E. .. Therefore, in the example shown in FIG. 11, it is considered that the cause of the suction error was the position abnormality in the Z direction, and the negative pressure did not rise to the sealing level due to the suction error generated by the position abnormality.

Here, the position abnormality in the Z direction when the mounting head 18 is lowered has been described as an example, but when the mounting head 18 is raised, a catch may occur and a position abnormality in the Z direction may occur. In that case, when the catch is cleared, the mounting head 18 rises sharply, and the component E cannot follow and falls, which may cause a suction error.

(4-2) Cause / Countermeasure Display Column As shown in FIG. 8, the cause / countermeasure display column 72 displays the cause of the adsorption error and its countermeasure. As can be seen from the graphs shown in FIGS. 9 to 11 described above, the graph shows features according to the cause of the adsorption error. As shown in FIG. 12, the storage unit 34 stores in advance a table in which the features appearing in the graph and the error causes and countermeasures corresponding to the features are associated with each other. The control unit 30 determines the characteristics of the adsorption error from the graph, reads out the error causes and countermeasures corresponding to the determined characteristics from the table, and displays them in the cause / countermeasure display column 72.
Hereinafter, a specific description will be given. The causes and countermeasures shown below are examples. The causes and countermeasures for adsorption errors are not limited to these.

As described above, the causes of the suction error include poor feeding of the component tape 19, negative pressure abnormality, component handling abnormality, and Z-direction position abnormality. The cause of one error is not limited to one, and even if the cause of the error is the same, the characteristics of the graph may differ if the factors are different. The graphs shown in FIGS. 9 to 11 show graphs when an error cause occurs due to any of the factors. For convenience, the following description will be described with reference to FIGS. 9 to 11. Therefore, in the following explanation, the features of the graph and the countermeasures may not correspond.

As shown in FIG. 8, in the case of poor feeding of the component tape 19, from the time when the mounting head 18 descends to the height where it contacts the component E (time point T1) to the time when the mounting head 18 starts to rise (time point T2). During the period of, there is a difference between the temporal change of the feed amount of the component tape 19 when the suction error occurs and the temporal change of the feed amount of the component tape 19 when the suction error does not occur, and the suction error. There is a characteristic that there is a difference between the temporal change of the negative pressure when the above occurs and the temporal change of the negative pressure when the adsorption error does not occur. Therefore, as shown in FIG. 12, the table is associated with "poor feeding of component tape" as an error cause corresponding to the feature.

As shown in FIG. 8, in the case of poor feeding of the component tape 19, a time change in the feeding amount of the component tape 19 and a suction error occur at a time before the time point T1 when a suction error occurs. There is a difference from the temporal change in the feed amount of the component tape 19 when the component tape 19 is not used. Therefore, this point may be added as a further feature.

The causes of poor feed of the component tape 19 are that the reel on which the component tape 19 is wound is caught and the reel is not rotating smoothly, the feeder 20 is defective and is not operating normally, and the feed is not normal. It is conceivable that the set value of the stop time is not appropriate, the feed speed of the component tape 19 is slow, and the like. The improper feed stop time setting means that the time set as the time for the feeder 20 to stop the feed of the component tape 19 is not appropriate.
For this reason, as shown in FIG. 12, the table is equipped with "Check reel status. Check feeder. Check feed stop time. Check feed speed of parts tape." It is attached.

As shown in FIG. 9, in the case of a negative pressure abnormality, when a suction error occurs during the period from the time when the mounting head 18 is lowered to the height where it contacts the component E to the time when the mounting head 18 starts to rise. There is a characteristic that there is a difference between the temporal change of the negative pressure and the temporal change of the negative pressure when the adsorption error does not occur. Therefore, as shown in FIG. 12, the table is associated with "negative pressure abnormality" as an error cause corresponding to the feature.

Possible causes of the negative pressure abnormality include an inappropriate suction position, an inappropriate type of suction nozzle 18B, and an inappropriate setting value of the suction time. The improper suction position means that the relative position between the mounting head 18 and the component E is displaced due to the improper XY coordinates set as the suction position (in other words, the component supply position S) for sucking the component E, and the suction nozzle. It means that a gap is generated in the opening of 18B and the negative pressure does not rise completely. The term "inappropriate type of suction nozzle 18B" means that the type set as the type of suction nozzle 18B used for suction of the component E is not appropriate. For example, if a suction nozzle 18B having a larger opening than an appropriate suction nozzle 18B is used, a gap may be formed in the opening and the negative pressure may not be fully increased. The improper setting value of the suction time means that the time set as the length of the period from the descent to the height at which the mounting head 18 contacts the component E to the start of the ascent is not appropriate.
Therefore, as shown in FIG. 12, the table is associated with "confirmation of suction position, re-teaching, confirmation of suction nozzle, reselection, confirmation of suction time" as a countermeasure against "negative pressure abnormality". ..

As shown in FIG. 10, in the case of a component handling abnormality, a temporal change in negative pressure and a suction error when a suction error occurs during the period after the mounting head 18 starts to rise (the period after the time point T2). There is a feature that there is a difference from the temporal change of the negative pressure when the above does not occur. Therefore, as shown in FIG. 12, the table is associated with "parts handling abnormality" as an error cause corresponding to the feature.

Possible causes for the component handling abnormality include an excessively high ascending speed of the mounting head 18, an inappropriate type of suction nozzle 18B, and an inappropriate setting value of suction time. Therefore, as shown in FIG. 12, the table is associated with "reduction of ascending speed of mounting head. Confirmation and reselection of suction nozzle. Confirmation of suction time" as a countermeasure against "part handling abnormality". ..

As shown in FIG. 11, in the case of a position abnormality in the Z direction, Z when a suction error occurs during the period after the mounting head 18 starts descending to the height at which the mounting head 18 contacts the component E. There is a difference between the temporal change of the position in the direction and the temporal change of the position in the Z direction when the adsorption error does not occur, and the temporal change of the negative pressure and the adsorption error occur when the adsorption error occurs. It is characterized by a difference from the temporal change of negative pressure when it is not done. Therefore, as shown in FIG. 12, the table is associated with "positional abnormality in the Z direction" as an error cause corresponding to the feature.

It is considered that the cause of the position abnormality in the Z direction is that the head shaft 18A is caught when the mounting head 18 is lowered, which causes a delay in the lowering of the mounting head 18. Therefore, as shown in FIG. 12, the table is associated with "confirmation of the state of the head shaft. Grease up. Replacement of the mounting head." As a countermeasure against "position abnormality in the Z direction".

(5) Effect of Embodiment According to the display device (control unit 30 and display unit 31A) according to the first embodiment, about two or more devices (feeder 20, head moving unit 13, head unit 12, ejector) related to suction. , The time change of the value related to the operation amount of the device when the adsorption error occurs and the time change of the value related to the operation amount of the device when the adsorption error does not occur are displayed. .. Therefore, it is possible to visualize (so-called visualization) the difference between the operation when the adsorption error occurs and the operation when the adsorption error does not occur in these devices. In this way, the operator can easily grasp the device whose operation is different between when the suction error occurs and when the suction error does not occur, so that the operation of a plurality of devices can be comprehensively judged and suctioned. It becomes easier to identify the cause of the error. Therefore, according to the display device, it becomes easy to solve the adsorption error.

According to the display device, the temporal change of the value related to the operation amount of each device is displayed on one screen (screen 70). In other words, according to the display device, since the above-mentioned temporal changes are displayed simultaneously for the two or more devices, it becomes easier to comprehensively judge the operation of the two or more devices and identify the cause of the adsorption error. ..

According to the display device, at least two of the four devices (feeder 20, head moving unit 13, head unit 12, ejector) related to the suction of the component E have a suction error and a suction error. The operator can easily grasp whether or not the operation is different from when it was not.

According to the display device, the mounting head 18 started to rise from the time when the mounting head 18 was lowered to the height where the mounting head 18 was in contact with the component E (time point T1) by the head unit 12 during the period when the suction error did not occur. Since the period up to the hour (time point T2) is further displayed on the display unit 31A, the operator can easily grasp the operation of each device during the above-mentioned period. Therefore, it becomes easier to identify the cause of the adsorption error.

According to the display device, since the control unit 30 displays the cause of the suction error, it becomes easier to solve the suction error.

According to the display device, measures for eliminating the cause of the error are displayed, so that the adsorption error can be dealt with appropriately regardless of the skill of the operator.

According to the display device, the temporal change of the value related to the operation amount of the device when the adsorption error occurs, the temporal change of the value related to the operation amount of the device when the adsorption error does not occur, the cause of the error, Since the countermeasures are displayed at the same time, it becomes easier for the operator to understand the operation of each device, the cause of the adsorption error, and the relationship between the countermeasures.

<Embodiment 2>
The surface mounter 1 according to the second embodiment is a modification of the first embodiment. The control unit 30 according to the second embodiment automatically executes the measures for eliminating the cause of the error in the adsorption error resolution support process when the measures can be automatically executed by the control unit 30.

A measure that can be automatically executed by the control unit 30 will be described with reference to FIG. The measures described below are examples, and the measures that the control unit 30 can automatically execute are not limited to the measures described below.
For example, if the cause of the error is a defective feed of the component tape 19, the countermeasure to eliminate the cause of the error is "Check the reel status. Check the feeder. Check the feed stop time. Check the feed speed of the component tape." There is. Of these, "confirmation of the feed rate of the component tape" is the time when the component E reaches the component supply position S when a suction error occurs and the time when the component E reaches the component supply position S when the suction error does not occur. This is a measure that can be automatically executed by the control unit 30 changing the feed rate of the component tape 19 according to the difference from the time. For example, when the time when the component E reaches the component supply position S when the suction error occurs is later (earlier) than the time when the component E reaches the component supply position S when the suction error does not occur. By automatically increasing (slowing) the feed rate based on the delayed (fast) time, it is possible to prevent feeding defects from occurring. "Confirmation of feed stop time" is also a measure that can be automatically executed.

When the cause of the error is a negative pressure abnormality, "confirmation of suction position, automatic re-teaching" is set so that a gap does not occur between the opening of the suction nozzle 18B and the part E when the mounting head 18 sucks the part E. This is a measure that can be automatically executed by the control unit 30 correcting the suction position. "Setting the adsorption time" is also a measure that can be automatically executed.
When the cause of the error is a component handling abnormality, "reduction of the ascending speed of the mounting head" is a measure that can be automatically executed by slowing the ascending speed of the mounting head 18 by the control unit 30 so that the component E does not fall. is there.

According to the display device according to the second embodiment, when the measure for eliminating the cause of the error is a measure that can be automatically executed by the control unit 30, the control unit 30 executes the measure, thus reducing the burden on the operator. it can.

<Embodiment 3>
The third embodiment is a modification of the first embodiment or the second embodiment. The control unit 30 according to the third embodiment does not immediately execute the adsorption error resolution support process when the adsorption error occurs, but when the adsorption error occurs and the adsorption rate is lower than a predetermined threshold value. Execute error resolution support processing. The adsorption rate refers to the ratio of the number of times that the component E is successfully adsorbed to the number of times that the component E is adsorbed.

When the screen 70 is displayed when a suction error occurs and the suction rate is lower than a predetermined threshold, the graph to be displayed may be a graph for the last suction error that occurred, or all the suctions that have occurred. It may be a graph obtained by averaging graphs about errors.

According to the display device according to the third embodiment, when an adsorption error occurs and the adsorption rate is lower than the threshold value, the temporal change is displayed, so that unnecessary display can be suppressed as much as possible.

<Other embodiments>
The technology disclosed herein is not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope disclosed herein.

(1) In the above embodiment, the feeder 20, the head moving unit 13, the head unit 12, and the ejector have been described as examples of the devices related to the suction of the component E among the plurality of devices constituting the surface mounter 1. , These are just examples. The device related to the adsorption of the component E is not limited to these.

(2) In the above embodiment, the control unit 30 is a device for two or more devices when a temporal change in a value related to the operation amount of the device when a suction error occurs and a suction error does not occur. Although the case where the temporal change of the value related to the operation amount is displayed at the same time has been described as an example, these may be switched and displayed for each device instead of simultaneously.
For example, when a switching button is displayed on the display unit and the operator operates the switching button, a temporal change in the value related to the operation amount of the device when a suction error occurs and a suction error does not occur. The time-dependent change of the value related to the operation amount of the device of the device may be displayed by switching.
Further, on the same display screen displayed on the display unit, it is related to the temporal change of the value related to the operation amount of the device when the adsorption error occurs and the operation amount of the device when the adsorption error does not occur. The temporal change of the value may be automatically switched and displayed every short time.

(3) In the above embodiment, the temporal change of the value related to the operating amount of the device when the adsorption error occurs, the temporal change of the value related to the operating amount of the device when the adsorption error does not occur, Although the case where the error cause and the countermeasure are displayed at the same time has been described as an example, these may be displayed by switching instead of simultaneously.

(4) In the above embodiment, the case where the temporal change of the value related to the operating amount of the apparatus is displayed in a graph has been described as an example. However, the display is not limited to the graph, and the related value (numerical value) may be displayed as it is. For example, the numerical values of the time change of the value related to the operation amount of the device when the adsorption error occurs and the time change of the value related to the operation amount of the device when the adsorption error does not occur are different colors. It may be displayed. Further, when the difference between the respective numerical values is equal to or larger than the preset numerical value, the numerical value may be displayed in a further different display mode (for example, different colors, fonts, etc.).

(5) In the above embodiment, the case where the error cause and the countermeasure are displayed in addition to the graph has been described as an example, but the error cause and the countermeasure may not be displayed. In that case, the operator will determine the cause of the error from the graph and consider countermeasures. The cause of the error may be displayed, and the countermeasure may not be displayed.

(6) In the above embodiment, the temporal change of the value related to the operating amount of the device when the adsorption error occurs and the temporal change of the value related to the operating amount of the device when the adsorption error does not occur. The display form of the graph is the same whether there is a difference in the change or not, but the temporal change of the value related to the operating amount of the device when the adsorption error occurs and when the adsorption error does not occur. The graph of the device which is different from the temporal change of the value related to the operation amount of the device may be displayed in an identifiable manner.

For example, it is assumed that the graph of the feed amount of the component tape 19 has the above-mentioned difference, and there is no difference between the graph of the position of the mounting head 18 in the XYZ direction and the graph of the negative pressure. In this case, for the graph of the feed amount of the component tape 19, the character "feed amount of the component tape" (that is, the character representing the variable on the vertical axis of the graph) displayed on the left side of the graph is displayed in red, and " The characters "position of the mounting head in the XYZ direction" and the characters "negative pressure" may be displayed in black.

Alternatively, there is a difference between the temporal change of the value related to the operating amount of the device when the adsorption error occurs and the temporal change of the value related to the operating amount of the device when the adsorption error does not occur. In the case, the line showing the temporal change of the value related to the operation amount of the device when the adsorption error occurs is displayed in solid line and red in the graph, and the operation amount of the device when the adsorption error does not occur. The line representing the temporal change of the value related to may be displayed in a line different from the line when the adsorption error occurs, for example, a dotted line and blue.

(7) In the above embodiment, the description of the position abnormality of the mounting head 18 in the XY direction is omitted, but it cannot be said that there is a possibility that a suction error may occur due to the position abnormality in the XY direction. Countermeasures may be displayed when a suction error occurs due to an abnormality.

(8) In the second embodiment, when the measure for eliminating the cause of the error is a measure that can be automatically executed by the control unit 30, the case where the control unit 30 automatically executes the measure has been described as an example. On the other hand, the control unit 30 automatically executes the countermeasure only when the control unit 30 is set to automatically execute the countermeasure or not, and the control unit 30 is set to automatically execute the countermeasure. You may want to do it.

(9) In the above embodiment, when a suction error occurs, or when a suction error occurs and the suction rate is lower than the threshold value, a time change of a value related to the operating amount of the device is displayed. Was explained as an example. However, the display timing is not limited to these. For example, it may be displayed when the operator instructs the display, it may be displayed when the preset time is reached, or it may be displayed at the end of the operation of the surface mounter 1 in a day. The adsorption error that occurred on the previous day may be displayed on the next day.

(10) In the above embodiment, the case where the control unit 30 and the display unit 31A included in the surface mounter 1 operate as a display device has been described as an example, but the display device is not limited to this. For example, the display device may be a personal computer communicatively connected to the surface mounter 1.

(11) In the above embodiment, the case where the temporal change of the value related to the operation amount of each device is displayed in the same window of one display unit 31A has been described as an example. When the above-mentioned temporal change of each device is displayed in the same window of one display unit 31A, the operator can identify the cause of the adsorption error in a short time from the display in one window.
It should be noted that the temporal change of the value related to the operation amount of each device may be displayed in a different window of the display unit 31A. Further, when a plurality of display units 31A are arranged side by side, for example, temporal changes in values related to the amount of operation of the device may be displayed on different display units 31A.

(12) In the above embodiment, the case of sucking the component has been described as an example of holding the component, but the holding of the component is not limited to suction. For example, it may be so-called chucking in which parts are sandwiched and held. Specifically, the drive source for holding parts by chucking is air (negative pressure), and the mechanism for gripping parts is operated by negative pressure, and when gripping parts, when they cannot be gripped, or reliably. The change in negative pressure when it cannot be grasped does not rise (do not fall completely) to the normal negative pressure, unlike the change in normal negative pressure. The feed amount of other tapes and the position of the head are the same as in the case of sucking parts.

(13) In the above embodiment, the printed circuit board P has been described as an example of the work, but the work is not limited to the printed circuit board P. For example, when the surface mounter 1 mounts the component E on a work having a three-dimensional shape, the work may be an arbitrary mounting target having a three-dimensional shape.

1 ... Surface mounter, 3 ... Tape parts supply device (example of parts supply device), 12 ... Head unit (example of head lifting device), 13 ... Head moving unit, 18 ... Mounting head, 30 ... Control unit (display device) (Example), 31A ... Display unit (example of display device), 42 ... Conveyor drive motor, 43 ... Sensors, 44 ... Actuators (example of negative pressure supply device), E ... Parts, P ... Printed circuit board (workpiece) One case)

Claims (11)

A display device that displays information about surface mounters that hold parts and mount them on workpieces.
Display and
Control unit and
With
The control unit has a value time related to the amount of operation of the device when a holding error occurs for two or more devices related to holding the component among the plurality of devices constituting the surface mounter. A display device that displays on the display unit a change in target and a temporal change in a value related to the amount of operation of the device when a holding error does not occur. The display device according to claim 1.
The control unit simultaneously displays the temporal change of the related value when the holding error occurs and the temporal change of the related value when the holding error does not occur for two or more of the devices. Display device. The display device according to claim 1 or 2.
The surface mounter includes a component supply device that sends the component to the component supply position, a mounting head that holds the component sent to the component supply position by negative pressure, a head moving device that moves the mounting head, and the mounting head. A head lifting device for raising and lowering a head and a negative pressure supply device for supplying negative pressure to the mounting head are provided.
The display device including at least two of the component supply device, the head moving device, the head elevating device, and the negative pressure supply device, the two or more devices related to holding the component. The display device according to claim 3.
The control unit is the period when the holding error does not occur, and the mounting head is lowered to a height preset as a height at which the mounting head comes into contact with the component by the head lifting device. A display device that further displays the period until the start of the rise on the display unit. The display device according to any one of claims 1 to 4.
The control unit has a temporal change of the related value when a holding error occurs for two or more devices related to the holding of the component and a temporal change of the related value when the holding error does not occur. A display device that determines the characteristics of a retention error from changes and further displays the cause of the error corresponding to the determined characteristics on the display unit. The display device according to claim 5.
The control unit is a display device that further displays measures for eliminating the cause of the error on the display unit. The display device according to claim 6.
The control unit simultaneously displays the temporal change of the related value when a retention error occurs, the temporal change of the related value when a retention error does not occur, the cause of the error, and the countermeasure. Display device. The display device according to any one of claims 5 to 7.
The control unit also serves as a control unit for the surface mounter, and when the countermeasure for eliminating the cause of the error is a countermeasure that can be automatically executed by the control unit, a display device that executes the countermeasure. The display device according to any one of claims 1 to 8.
When a retention error occurs and the retention rate is lower than the threshold value, the control unit determines the temporal change of the related value when the retention error occurs and the association when the retention error does not occur. A display device that displays a change over time in a value to be displayed on the display unit. A surface mounter that holds parts and mounts them on a workpiece.
Display and
Control unit and
With
The control unit has a value time related to the amount of operation of the device when a holding error occurs for two or more devices related to holding the component among the plurality of devices constituting the surface mounter. A surface mounter that displays on the display a change in target and a temporal change in a value related to the amount of operation of the device when a holding error does not occur. A display method that displays information about surface mounters that hold parts and mount them on workpieces.
Of the plurality of devices constituting the surface mounter, for two or more devices related to the holding of the parts, the temporal change of the value related to the operation amount of the device when a holding error occurs and the holding A display method comprising the step of displaying on the display a time-dependent change in a value related to the amount of operation of the device when an error does not occur.

Images