JP7234085B2 - Board working device and remote control method for board working device - Google Patents

Description

The technology disclosed in this specification relates to a board working apparatus and a remote control method for the board working apparatus.

2. Description of the Related Art Conventionally, screen printers, dispensers, surface mounters, and the like are known as substrate working apparatuses for performing predetermined operations on substrates. Generally, the board working apparatus has an operating section, and an operator can perform various operations on the board working apparatus by operating the operating section.
In such a board working apparatus, in addition to operating an operation unit, there is also known a board working apparatus that can be remotely operated from an external terminal device connected via a communication network (see, for example, Patent Document 1). . Specifically, Patent Document 1 describes setting a remote operation right to a management computer (corresponding to a terminal device) and remotely operating a processing device (corresponding to a board working device) from the management computer. there is

Further, in Japanese Patent Laid-Open No. 2002-100000, when there is a request for operation by an input unit provided in the processing device in a state where the remote operation right is set for the management computer, or when a specific It is described that the remote operation right is canceled when an action (opening/closing of the safety cover, operation of the stop button, etc.) is performed.

JP 2017-143169 A

According to the technique described in Patent Document 1, for example, when there is an operation request from the input unit during maintenance work of the processing device by remote operation, or when a specific operation is performed on the processing device, Since the remote operation right is released, the point at which the maintenance work is completed may be delayed.

This specification discloses a technique capable of early completing remote control of a board working apparatus while suppressing deterioration in work performance of the board working apparatus.

(1) A board working apparatus disclosed in this specification is a board working apparatus that performs a predetermined work on a board, and includes a communication section for communicating with a terminal device, and a control section. The unit establishes communication with the terminal device through a control process to control each part of the board working apparatus to perform the predetermined work, and establishes communication with the terminal device through the communication section to remotely control the board working apparatus from the terminal device. a reception process for accepting an operation; and prohibiting remote operation from the terminal device in response to a processing load of the control unit exceeding a first threshold when communication with the terminal device is established. Execute the prohibition process.

The above "prohibit remote operation from the terminal device when the processing load of the control unit exceeds the first threshold" is always performed when the processing load of the control unit exceeds the first threshold. This includes not only prohibiting remote operation, but also prohibiting remote operation when the processing load of the control unit exceeds the first threshold and another condition is satisfied. Therefore, even if the processing load exceeds the first threshold value, there may be a case where the remote operation is not prohibited.

When the processing load of the control unit is low, even if the board working device is operated remotely, the working performance of the board working device is unlikely to be degraded. However, in the technique described in the above-mentioned Patent Document 1, when there is an operation request from the input unit or when a specific operation is performed on the processing device, the remote operation right is canceled regardless of the processing load of the control unit. Therefore, even if remote control can be performed while suppressing deterioration of the work performance of the processing device, remote control cannot be performed. Therefore, there is a possibility that the completion of the remote control of the board working device will be delayed.

According to the board working apparatus described above, remote operation is not prohibited when the processing load of the control unit is low (less than the first threshold value). Therefore, when the operation unit of the board working device is operated or when a specific operation is performed on the board working device, the remote operation is continued compared to the case where the remote operation is prohibited regardless of the processing load of the control unit. more likely to be possible. This increases the possibility of early completion of the remote operation.

However, if remote operation is still permitted, when the board working device starts working, the processing load on the control unit will increase due to the remote operation being performed during work, and it will not be possible to control each part of the board working device. There is a possibility that the execution of the control process that causes the predetermined work to be performed is hindered. If the execution of the control process is hindered, the work performance of the board working device is degraded.
According to the board working apparatus described above, the remote operation is prohibited when the processing load of the control unit exceeds the first threshold value. Suppressed.
Therefore, according to the above-described board working apparatus, remote control of the board working apparatus can be completed early while suppressing deterioration of the work performance of the board working apparatus.

(2) In the prohibition process, the control unit may prohibit remote operation from the terminal device by disconnecting communication with the terminal device.

According to the board working apparatus described above, remote operation from the terminal device can be prohibited by disconnecting the communication with the terminal device.

(3) In the prohibition process, the control unit determines that the processing load of the control unit is equal to or greater than the first threshold value and that a predetermined precondition for the board working device to start the work is established. or the state in which the processing load of the control unit is equal to or greater than the first threshold continues for a certain period of time or more and the predetermined precondition is satisfied, remote operation from the terminal device is prohibited. may

If some processing is started by the control unit of the substrate working device while communication with the terminal device is established, there is a possibility that the processing performance of the processing will be degraded due to the remote operation being performed. However, if the predetermined preconditions for starting the work of the board working apparatus are not satisfied, the process is not the control process for controlling each part of the board working apparatus to perform the predetermined work. It does not affect the work performance of the work for

According to the board working device, even if the processing load of the control unit exceeds the first threshold value while communication with the terminal device is established, or the state of the first threshold value or higher continues for a certain period of time or more. However, if the predetermined preconditions for starting the work of the board working device are not satisfied, the remote operation from the terminal device is not prohibited, so the support staff can continue the remote operation. For this reason, when the processing load of the control unit exceeds the first threshold value, or when the state of the first threshold value or more continues for a certain period of time or longer, remote operation is prohibited even if the preconditions are not satisfied. Compared to , there is a higher possibility that the remote operation can be completed early.

According to the above board working apparatus, when the condition "the processing load of the control unit is equal to or greater than the first threshold value and the precondition is satisfied" is satisfied by the precondition being satisfied thereafter, or " When the condition that the processing load of the control unit is greater than or equal to the first threshold continues for a certain period of time or more and the precondition is met, remote operation is prohibited, so the remote-controlled substrate working apparatus It is possible to suppress the deterioration of the work performance of

(4) The precondition may be that the state of the board working device is ready for operation.

If the board working equipment is not ready for operation, the board working equipment cannot immediately start working. If the board working device cannot start working immediately, the working performance of the board working device does not deteriorate even if the board working device is remotely operated from the terminal device.
According to the board working device, even if the processing load of the control unit exceeds the first threshold value while communication with the terminal device is established, or the state of the first threshold value or higher continues for a certain period of time or more. However, if the state of the board working device is not ready for operation, the remote operation from the terminal device is not prohibited. Therefore, the possibility of completing the remote operation early becomes higher.

(5) When the processing load of the control unit when receiving a connection request from the terminal device in the reception process is equal to or greater than a second threshold that is equal to or less than the first threshold, or Communication with the terminal device may not be established if the processing load of the control unit is equal to or greater than the second threshold value at the time of receiving the connection request and has continued for a certain period of time or longer.

A constant state in which the processing load of the control unit is equal to or greater than the second threshold when the connection request from the terminal device is received, or the processing load of the control unit is equal to or greater than the second threshold when the connection request is received. If it continues for more than an hour, establishing communication with the terminal device will further increase the processing load on the control unit due to the remote operation, and there is a possibility that the work performance of the board working device will deteriorate. .

According to the board working device described above, when the processing load of the control unit when the connection request from the terminal device is received is equal to or greater than the second threshold, or when the connection request is received, the processing load of the control unit is reduced to the second threshold. is equal to or greater than the threshold for a certain period of time or longer, communication with the terminal device is not established.

In the reception process, the control unit performs the processing load when the processing load of the control unit when receiving the connection request from the terminal device is equal to or greater than a second threshold that is equal to or less than the first threshold, or the connection request Even if the state in which the processing load of the control unit is equal to or greater than the second threshold has continued for a certain period of time or longer at the time of receiving the If the precondition is not met, communication with the terminal device may be established.

If the predetermined preconditions for starting the work of the board working device are not met, even if the communication with the terminal device is established, it does not affect the work performance of the work on the board. According to the board working device described above, communication with the terminal device is established when the predetermined preconditions for starting the work of the board working device are not satisfied, so there is a possibility that the remote operation can be started early. get higher As a result, the possibility of early completion of the remote operation increases.

(6) A remote control method disclosed in the present specification is a remote control method for a board working apparatus that performs a predetermined work on a board, wherein a control section of the board working apparatus controls each section of the board working apparatus. a receiving step in which the control unit establishes communication with a terminal device via a communication unit and receives a remote operation of the substrate working apparatus from the terminal device; a prohibition step in which the control unit prohibits remote operation from the terminal device in response to the processing load of the control unit becoming equal to or greater than a first threshold when communication with the device is established; include.

According to the above-described remote control method, the remote control of the board working apparatus can be completed early while suppressing the deterioration of the work performance of the board working apparatus.

(7) The processing load may be a processing load due to communication-related processes.

In remote operation, communication-related processes are executed to transmit screen data, log data, and the like. This increases the processing load of communication-related processes. Since the processing load can be ascertained for each process, remote operation from the terminal device may be prohibited when the processing load due to the communication-related process exceeds the first threshold.

The invention disclosed in this specification can be realized in various forms such as an apparatus, a method, a computer program for realizing the functions of these apparatuses or methods, a recording medium recording the computer program, and the like.

Schematic diagram of a component mounting system according to the first embodiment Top view of surface mounter Block diagram showing the electrical configuration of a surface mounter Conceptual diagram of remote control Schematic diagram for explaining the operation of the remote control program Timing chart according to the second embodiment

<Embodiment 1>
Embodiment 1 will be described with reference to FIGS. 1 to 5. FIG. In the following description, the reference numerals in the drawings may be omitted except for some of the same constituent members.

(1) Component Mounting System A component mounting system 1 will be described with reference to FIG. A component mounting system 1 is a system for mounting components on a board, and includes a component mounting line 10 , a management computer 11 and a firewall 12 .

(1-1) Management Computer The management computer 11 is a computer that manages the component mounting line 10 . The management computer 11 is communicably connected to a plurality of board working devices 15 constituting the component mounting line 10 via a communication network 13 such as a LAN (Local Area Network). The management computer 11 is communicably connected to the firewall 12 via a communication network 14 such as a LAN, and also performs processing for relaying communication when the board working device 15 communicates with an external device.

(1-2) Firewall The firewall 12 is a computer for protecting against unauthorized access from the outside. The firewall 12, which is a computer, is schematically shown as a wall in FIG. The firewall 12 is set to permit the minimum required communication with the outside in order to allow remote control of the substrate working apparatus 15 from the outside through the management computer 11 .

(1-3) Component Mounting Line The component mounting line 10 includes a loader 16, a screen printer 17, a print inspection machine 18, a dispenser 19, a plurality of surface mounters 20, a post-mounting visual inspection machine 21, a reflow device 22, and a post-curing It has a visual inspection device 23 and an unloader 24 , which are connected in series via a plurality of conveyors 25 .

The loader 16 is a device that supplies substrates stored in racks to the screen printer 17 . The screen printer 17 is a device that forms a circuit by screen-printing solder paste (an example of a predetermined work) on the surface of a substrate using a mask. The print inspection machine 18 is a device that inspects the circuit screen-printed by the screen printer 17 (an example of a predetermined work). A dispenser 19 is a device that applies an adhesive to a substrate (an example of a predetermined work).

The surface mounter 20 is a device that mounts components on a board (an example of a predetermined work). The configuration of the surface mounter 20 will be described later. The post-mounting visual inspection machine 21 is a device for inspecting the external appearance of a board after components have been mounted by the surface mounter 20 (an example of predetermined work). The reflow device 22 is a device that melts solder paste at a high temperature and electrically connects components and electrodes (so-called lands) on a substrate (an example of a predetermined work).
The post-curing appearance inspection device 23 is a device for inspecting the appearance of the board after the solder paste melted by the reflow device 22 is cured. The unloader 24 is a device for storing the substrate sent out from the post-curing appearance inspection device 23 in a rack.

The screen printer 17 , the print inspection machine 18 , the dispenser 19 , the plurality of surface mounters 20 , the post-mounting visual inspection machine 21 , the reflow device 22 , and the post-curing visual inspection device 23 are examples of the board working device 15 . . In the following description, the surface mounter 20 is taken as an example of the board working device 15. FIG.

(2) Surface Mounter A configuration of the surface mounter 20 will be described with reference to FIG. In the following description, the left-right direction shown in FIG. 2 is called the X direction, and the front-rear direction is called the Y direction. In the following description, the right side shown in FIG. 2 is called the upstream side, and the left side is called the downstream side.

The surface mounter 20 includes a conveyor 30 that conveys the substrate P, a backup device (not shown), four tape component supply devices 31 that supply the components E to be mounted on the substrate P, and the components E supplied by the tape component supply devices 31. on the substrate P is provided with a component mounting device 32 .
The conveyor 30 carries the board P from the upstream side in the X direction to the work position A, and carries out the board P on which the component E is mounted at the work position A to the downstream side. The conveyor 30 includes a pair of conveyor belts 30A and 30B circulating in the X direction, a conveyor drive motor 54 (see FIG. 3) for driving the conveyor belts 30A and 30B, and the like. The rear conveyor belt 30A is movable in the front-rear direction, and the distance between the two conveyor belts 30A and 30B can be adjusted according to the width of the substrate P.

A backup device (not shown) is arranged below the working position A. As shown in FIG. The backup device has a plurality of backup pins set at positions corresponding to the model of the substrate P, and when the substrate P is transported to the working position A, the backup pins are raised to support the substrate P from below.

The tape component supply devices 31 are arranged in two locations in the X direction on both sides of the component mounting device 32 in the Y direction, for a total of four locations. A plurality of feeders 33 are attached to these tape component supply devices 31 so as to be aligned side by side in the X direction. Each feeder 33 is provided with a reel on which a component tape containing a plurality of components E is wound, and an electric tape feeding device for pulling out the component tape from the reel. The parts E are supplied one by one from the designated part supply position.
Here, the tape component supply device 31 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 components E are placed, or a semiconductor wafer. It may be something to do.

The component mounting apparatus 32 includes a head unit 34, a head moving unit 35 for moving the head unit 34 in the X direction and the Y direction within a predetermined movable range, a board imaging camera 36, a component imaging camera 37, and the like.

The head unit 34 includes a plurality of mounting heads 34A arranged in a row, a Z-axis servomotor 52 (see FIG. 3) for individually raising and lowering each mounting head 34A, and an R-axis servo motor for simultaneously rotating each mounting head 34A around its axis. It has a servo motor 53 (see FIG. 3) and the like. The mounting head 34A is for sucking and releasing the component E, and has a nozzle shaft and a suction nozzle detachably attached to the lower end of the nozzle shaft. Negative pressure and positive pressure are supplied to the suction nozzle from an air supply device (not shown) through a nozzle shaft. The suction nozzle sucks the component E by being supplied with a negative pressure, and releases the component E by being supplied with a positive pressure.
Here, an in-line type head unit 34 in which a plurality of mounting heads 34A are arranged in a row will be described as an example. may be

The head moving section 35 includes a beam 35A supporting the head unit 34 so as to be reciprocable in the X direction, a pair of Y-axis guide rails 35B supporting the beam 35A so as to be reciprocable in the Y direction, and the head unit 34 in the X direction. An X-axis servomotor 50 for reciprocating in the direction and a Y-axis servomotor 51 for reciprocating the beam 35A in the Y direction are provided.

The two component imaging cameras 37 are provided between the two tape component supply devices 31 aligned in the X direction. The component imaging camera 37 is for capturing an image of the component E sucked by the mounting head 34A from below and recognizing the rotation angle and component shape of the component E with respect to the mounting head 34A.
A board imaging camera 36 is provided in the head unit 34 . The board imaging camera 36 is for detecting the position and inclination of the board P by taking an image of a fiducial mark (not shown) attached to the board P. FIG.

An electrical configuration of the component mounting apparatus 32 will be described with reference to FIG. The component mounting apparatus 32 has a control section 41 and an operation section 42 . The control unit 41 includes an arithmetic processing unit 43, a motor control unit 44, a storage unit 45, an image processing unit 46, an external input/output unit 47, a feeder communication unit 48, a communication unit 49, and the like.

The arithmetic processing unit 43 includes a CPU, ROM, RAM, etc., and controls each unit of the component mounting apparatus 32 by executing various programs stored in the ROM and storage unit 45 .
The motor control unit 44 controls the rotation of each motor such as the X-axis servomotor 50, the Y-axis servomotor 51, the Z-axis servomotor 52, the R-axis servomotor 53, and the conveyor drive motor 54 under the control of the arithmetic processing unit 43. do.

The storage unit 45 is a storage device provided with a storage medium such as a non-volatile semiconductor memory or a hard disk in which data is not erased even when the power is turned off. Various programs and data are stored in the storage unit 45 .
Various programs include an operating system (OS), an operation program described later, a remote operation program (more specifically, a mounter-side program), and a load monitoring program.
The various data include information on the number of boards P to be produced and the type of board P to be produced, information on the mounting coordinates and mounting angles of the components E, information on the mounting order of the components E, log data, and the like. The log data includes values measured by the various sensors 55 of the surface mounter 20 at predetermined time intervals, image data captured by the board imaging camera 36 and component imaging camera 37, and data of the mounting head 34A in the XY directions at predetermined time intervals. It is the position, the position of the component tape at every predetermined time, and the like. Log data is not limited to these.

The image processing unit 46 is configured to receive image signals output from the component imaging camera 37 and the board imaging camera 36 .
The external input/output unit 47 is a so-called interface, and is configured to receive detection signals output from various sensors 55 provided on the main body of the component mounting apparatus 32 . Also, the external input/output unit 47 is configured to control the operation of various actuators 56 (including the air supply device) based on the control signal output from the arithmetic processing unit 43 .

The feeder communication unit 48 is connected to each feeder 33 and controls the plurality of feeders 33 in an integrated manner.
A communication unit 49 is hardware for the control unit 41 to communicate with the management computer 11 .

The operation unit 42 includes a display unit 42A such as a liquid crystal display, an input unit 42B having a touch panel and various operation buttons, a servo switch 42C, an emergency stop switch 42D, and the like. An operator of the surface mounter 20 can perform various operations on the surface mounter 20 by operating the input section 42B.

The servo switch 42C and the emergency stop switch 42D are switches operated by the operator. A servo-on signal is output to the controller 41 when the operator operates the servo switch 42C. When the operator operates the emergency stop switch 42D, a servo-off signal is output to the controller 41. FIG. A current interrupting device (for example, a relay) is provided on the current path that supplies power to each servomotor. When the servo-on signal is output, the control unit 41 closes the current interrupter to put the servo motor in a state in which it can be energized (in other words, the surface mounter 20 can start the mounting operation at any time), and when the servo-off signal is output, the current is interrupted. Open the device so that the servomotor cannot be energized. In the following description, the state in which the current interrupter is closed is referred to as servo-on, and the state in which it is open is referred to as servo-off. Servo-on is an example of a ready-to-run state.

Although a case where a current interrupting device is provided on the current path that supplies power to each servomotor will be described as an example, the current interrupting device may not be provided. In this case, the control unit 41 may turn on a predetermined flag when the servo-on signal is output, and may turn off the flag when the servo-off signal is output. Then, when the flag is off, the control unit 41 may not energize each servomotor.

(3) Operation Program, Remote Operation Program, and Load Monitoring Program An operation program executed by the surface mounter 20, a remote operation program executed by the surface mounter 20 and a terminal device 61 of a call center 60, which will be described later, and surface mounting. A load monitoring program executed by machine 20 will be described.

(3-1) Operation Program The operation program is a program for performing various operations on the surface mounter 20 (various settings, operation instructions, log data extraction, transmission of the extracted log data, etc.). The operation program is started when the surface mounter 20 is powered on. When the operation program is started, an operation screen is displayed on the display section 42A. The operator can perform various operations described above by operating the input section 42B while viewing the operation screen.

For example, when extracting log data, the operator operates the operation unit 42 to display an operation screen for inputting log data extraction conditions. Then, the operator inputs extraction conditions on the displayed operation screen. For example, when log data is to be transmitted, the operator displays an operation screen for designating a transmission destination, and inputs the file name and transmission destination of the log data to be transmitted on the displayed operation screen.

(3-2) Remote Control Program The remote control program will be described with reference to FIGS. 4 and 5. FIG. As shown in FIG. 4, the firewall 12 of the component mounting line 10 is communicably connected to the terminal device 61 of the call center 60 via the cloud network 62 on the Internet. The call center 60 is a department of the manufacturer of the surface mounter 20 and provides after-sales service to customers. The terminal device 61 is a so-called personal computer.

The remote control program is a program for remotely controlling the surface mounter 20 from the terminal device 61 . The remote control program consists of a mounter-side program executed by the surface mounter 20 and a terminal-side program executed by the terminal device 61 of the call center 60 . Since the remote control program is commercially available, a commercially available remote control program can also be used.

A general operation of the remote control program will be schematically described with reference to FIG. The operations described below are examples, and the operations of the remote control program are not limited to the operations described below.
A mounter-side program executed by the surface mounter 20 is executed as a resident program (also called a service). When the mounter-side program receives a connection request from the terminal-side program executed by the terminal device 61, it establishes communication with the terminal-side program. As a result, the terminal device 61 is remotely connected to the surface mounter 20 .

After establishing communication with the terminal-side program, the mounter-side program transmits screen data for displaying an operation screen to the terminal-side program. Upon receiving the screen data, the terminal-side program displays the operation screen represented by the screen data on the display unit 61A of the terminal device 61. FIG. As a result, the same operation screen is displayed on the display section 42A of the surface mounter 20 and the display section 61A of the terminal device 61 at the same time.

When the input device (mouse, keyboard, touch panel, etc.) of the terminal device 61 is operated while the operation screen is displayed on the display unit 61A of the terminal device 61, the operation information is transmitted from the terminal-side program to the mounter-side program. be done. The operation information sent to the mounting machine side program is sent to the operation program via the OS. As a result, the operation screen displayed on the display unit 42A of the surface mounter 20 can be remotely operated from the terminal device 61. FIG.

Here, the case where the same operation screen is simultaneously displayed on the display unit 42A of the surface mounter 20 and the display unit 61A of the terminal device 61 has been described as an example. , the operation screen does not have to be displayed.
The process of establishing communication between the mounter-side program and the terminal-side program, the process of sending screen data to the terminal-side program, and the process of sending the operation information received from the terminal-side program to the OS are the processes for accepting remote operations. It is an example of a reception process and a reception step.

Next, with reference to FIG. 4, the flow of remote control using the remote control program will be described. When an abnormality occurs in the surface mounter 20, the operator 70 of the surface mounter 20 normally operates the operation unit 42 of the surface mounter 20 to store log data, setting data of the surface mounter 20, etc., in the management computer 11, for example. , and the management computer 11 analyzes the data to investigate the cause of the abnormality. If the cause cannot be found even after analyzing the data, the operator 70 calls the call center 60 of the surface mounter 20 and asks the support person 71 to investigate.

When a support person 71 is requested to investigate, conventionally, the support person 71 judges the data considered necessary for the investigation, explains the data to the operator 70 by telephone, and requests extraction and transmission of the necessary data. However, communication was difficult over the phone, and it took time to obtain the necessary data. Additional data may be required as a result of analysis of the obtained data. In that case, it was necessary to explain over the phone again and obtain the data again, and it sometimes took several hours for one support. Therefore, in this embodiment, the support staff 71 remotely operates the operation screen of the surface mounter 20 to perform the operation for transmitting the data.

The flow of remote control using the remote control program will be described more specifically. The operator 70 calls the call center 60 of the surface mounter 20 and explains the situation to the support person 71 (S101). When the support staff 71 determines that log data or the like is necessary for investigation, the terminal-side program is started, and the operator 70 is requested to permit remote connection to the surface mounter 20 via the terminal-side program. (S102). When the operator 70 approves the remote connection, he/she operates the operation unit 42 of the surface mounter 20 to accept the communication. This will allow remote connection.

When the connection is approved, the support staff 71 remotely connects to the surface mounter 20 (S103), and remotely performs necessary operations such as extraction and transmission of log data (S104). The support staff 71 analyzes the log data transmitted from the surface mounter 20 to investigate the cause of the abnormality, and if necessary, remotely operates the operation screen to change settings. When the work is completed, the support staff 71 notifies the operator 70 of the work completion (S105), and operates the terminal device 61 to disconnect the remote connection (S106).

(3-3) Load Monitoring Program The surface mounter 20 may start mounting the component E while the support person 71 is remotely controlling the surface mounter 20 in S104 described above. The component E is mounted by the control unit 41 controlling each unit of the surface mounter 20 (an example of control processing and control steps). In remote operation, network communication (send screen data, send log data, receive operation information, etc.), read/write files (write extracted log data to files, etc.), GUI (Graphical User Interface) control (received operation display of an operation screen according to the information, etc.), a load is placed on the control unit 41 . Therefore, when the mounting work is started while the terminal device 61 is remotely connected, the CPU usage rate [%] increases due to the load due to the remote operation and the load due to the mounting work, and the operability of the surface mounter 20 increases. and work performance (the number of substrates P produced per unit time) may decrease. The CPU usage rate is an example of the processing load on the control unit 41 .

The load monitoring program is a program that prohibits remote operation from the terminal device 61 in response to an increase in the CPU usage rate of the control unit 41 in order to suppress deterioration in operability and work performance of the surface mounter 20. is.
Specifically, the load monitoring program acquires the CPU usage rate from the OS at predetermined time intervals, and the state in which the CPU usage rate is equal to or higher than a first threshold value (eg, 70%) continues for a certain period of time (eg, 30 seconds). Then, a remote disconnection signal is sent to the mounting machine side program. When the mounter side program receives the remote disconnection signal, it disconnects the communication with the terminal side program (an example of prohibition processing and prohibition step). As a result, remote operation from the terminal device 61 is prohibited. The first threshold value described above is not limited to 70%, and can be determined as appropriate. The same is true for the fixed period of time.
Note that the load monitoring program may send a remote disconnection signal to the OS instead of the mounter-side program, and the OS may disconnect the remote connection.

When the remote connection from the terminal device 61 is disconnected, the CPU usage rate is lowered, so that the deterioration of the operability and work performance of the surface mounter 20 can be suppressed. However, since the mounter-side program remains loaded in the RAM as it is, there is a possibility that the work performance of the surface mounter 20 will be degraded due to the high usage rate of the RAM. For this reason, the load monitoring program terminates the mounter-side program by transmitting a predetermined end command to the OS after transmitting the remote disconnection signal to the mounter-side program. Alternatively, the mounter-side program may be configured to end after disconnecting the remote connection from the terminal device 61 .

(4) Effect of the Embodiment According to the surface mounter 20 according to the first embodiment, remote operation from the terminal device 61 is not prohibited when the CPU usage rate of the control section 41 is low (less than the first threshold). Therefore, when the operation unit 42 is operated or when a specific operation is performed on the surface mounter 20, there is a possibility that the remote operation can be continued compared to the case where the remote operation is prohibited regardless of the CPU usage rate. get higher Therefore, the possibility that the remote operation can be completed early is increased. Further, according to the surface mounter 20, remote operation is prohibited when the CPU usage rate of the control unit 41 is equal to or higher than the first threshold for a certain period of time or more. A decrease in performance is suppressed. Therefore, according to the surface mounter 20 , the remote control of the surface mounter 20 can be completed early while suppressing the deterioration of the work performance of the surface mounter 20 .

According to the surface mounter 20 , remote operation from the terminal device 61 can be prohibited by disconnecting the communication with the terminal device 61 .

<Embodiment 2>
Embodiment 2 will be described with reference to FIG. In the load monitoring program according to the first embodiment described above, when the state in which the CPU usage rate of the control unit 41 is equal to or higher than the first threshold continues for a certain period of time or more while the terminal device 61 is remotely connected to the surface mounter 20, the terminal device Remote operation from the device 61 is prohibited. On the other hand, the load monitoring program according to the second embodiment assumes that the state where the CP usage rate of the control unit 41 is equal to or higher than the first threshold continues for a certain period of time or more and that the surface mounter 20 starts mounting work. Remote operation from the terminal device 61 is prohibited when a predetermined precondition is satisfied.

(1) Preconditions In the case of the surface mounter 20, preconditions include turning on the servo, completion of setup change, completion of various preparatory operations, and the like. These preconditions are described below.

As described above, "servo-on" means that the current interruption device is closed and the servomotor can be energized. Since the surface mounter 20 cannot start the work unless the servo is turned on, it can be said that the servo-on is a precondition for the surface mounter 20 to start the mounting work.

The setup change means that when the model of the printed circuit board P to be produced is switched, preparations are made according to the model after switching. In the setup change, the work of changing the arrangement of the backup pins according to the model after switching, the work of replacing the suction nozzle with the type of suction nozzle according to the model after switching, and the component tape corresponding to the model after switching are supplied to the tape component supply device 31. Work such as setting to is performed. Since the surface mounter 20 cannot start the mounting work unless the setup change is completed, the completion of the setup change is a precondition for the surface mounter 20 to start the mounting work.

When the changeover is completed, the operator operates the operation unit 42 to notify the surface mounter 20 of the completion of the changeover. Thereby, the control unit 41 can determine whether or not the changeover has been completed. If the control unit 41 can automatically determine whether or not the changeover has been completed, the operator does not need to perform the operation of notifying the surface mounter 20 of the completion of the changeover.

Various preparatory operations include an operation of detecting the center position of the mounting head 34A by capturing an image of the mounting head 34A from below with the component imaging camera 37 (so-called axis alignment), an operation of automatically cleaning the mounting head 34A, and the like. These are examples of preparatory operations, and preparatory operations are not limited to these. The preparatory operation is performed under the control of the control section 41 . Since the control unit 41 does not start the mounting work until various preparatory operations are completed, it can be said that the completion of various preparatory operations is a precondition for the surface mounter 20 to start work.
The preconditions may be one or two of servo-on, completion of setup change, and completion of various preparatory operations, or may include conditions other than these.

(2) Flow of Disconnecting Remote Connection A flow of disconnecting remote connection according to the second embodiment will be described with reference to FIG. As described above, conditions (preconditions) that are prerequisites for the surface mounter 20 to start work include servo-on, completion of setup change, completion of various preparatory operations, etc. Here, servo-on will be described as an example.

In the example shown in FIG. 6, the state of the surface mounter 20 is servo-off at time T1, and the terminal device 61 is remotely connected at time T2. In the example shown in FIG. 6, the CPU usage rate rises at time T3 after that, and after the CPU usage rate rises to "high" at time T4, the "high" state continues for a certain period of time S or longer. Here, "high" means that the CPU usage rate is equal to or higher than a first threshold (for example, 70%).

In the example shown in FIG. 6, when the "high" state continues for a certain period of time S (time T5), the surface mounter 20 is in the servo-off state. In other words, at time T5, the CPU usage rate is equal to or higher than the first threshold and continues for a certain period of time S or longer, but the precondition for the surface mounter 20 to start the mounting operation is not satisfied. Therefore, the remote connection will not be closed.

In the example shown in FIG. 6, the remote connection is disconnected at time T6. This is because the support person 71 has performed the disconnection operation after completion of the remote operation, and is not forcibly disconnected. In the example shown in FIG. 6, the state of the surface mounter 20 is servo-on at time T7, and servo-off at time T8. Then, at time T9 after that, the terminal device 61 is remotely connected again.

In the example shown in FIG. 6, the state of the surface mounter 20 is servo-on at time T10 thereafter. After that, at time T11, the CPU usage rate rises to "high", and the "high" state continues for a certain period of time S. In the example shown in FIG. 6, the state of the surface mounter 20 is servo-on when the "high" state continues for a certain time S (time T12). In other words, at time T12, the CPU usage rate has continued to be equal to or higher than the first threshold for a certain period of time S or longer, and the preconditions for the surface mounter 20 to start work are satisfied. Therefore, at time T12, a remote disconnection signal is transmitted from the load monitoring program to the mounter side program, and the remote connection from the terminal device 61 is forcibly disconnected.

(3) Effect of the Embodiment According to the surface mounter 20 according to the second embodiment, when the terminal device 61 is remotely connected, the state in which the CPU usage rate is equal to or higher than the first threshold continues for a certain time S or longer. Also, when the predetermined preconditions for starting the mounting work of the surface mounter 20 are not satisfied, the remote operation from the terminal device 61 is not prohibited, so the support person 71 can continue the remote operation. Therefore, if the CPU usage rate is equal to or higher than the first threshold for a certain period of time S or longer, the remote operation can be completed earlier than if the remote operation is prohibited even if the preconditions are not met. become more sexual.
Then, according to the surface mounter 20, when the condition that "the state in which the CPU usage rate of the control unit 41 is equal to or higher than the first threshold continues for a certain period of time or longer and the precondition is satisfied" is satisfied, Since remote operation is prohibited, it is possible to suppress deterioration in the work performance of the surface mounter 20 due to remote operation.

According to the surface mounter 20, the precondition is that the state of the surface mounter 20 is servo-on. According to the surface mounter 20, when the terminal device 61 is remotely connected and the state where the CPU usage rate is equal to or higher than the first threshold continues for the predetermined time S or longer, the state of the surface mounter 20 is not servo-on. does not prohibit remote operation, the support staff 71 is more likely to be able to continue remote operation. Therefore, the possibility of completing the remote operation early becomes higher.
<Other embodiments>
The technology disclosed in this specification is not limited to the embodiments described above and illustrated in the drawings, and the following embodiments are also included in the technical scope disclosed in this specification.

(1) In the first embodiment, the case where the remote operation is prohibited when the state where the CPU usage rate of the control unit 41 is equal to or higher than the first threshold has continued for the predetermined time S or longer has been described as an example. On the other hand, remote operation may be prohibited immediately when the CPU usage rate becomes equal to or higher than the first threshold.

(2) In the second embodiment, remote operation is prohibited when the CPU usage rate of the control unit 41 is equal to or higher than the first threshold for a certain period of time S or more and when a predetermined precondition is satisfied. explained in the example. On the other hand, the remote operation may be prohibited when the CPU usage rate is equal to or higher than the first threshold and when a predetermined precondition is satisfied.

(3) In the above embodiment, the case where the terminal device 61 can remotely connect to the surface mounter 20 regardless of the CPU usage rate of the surface mounter 20 has been described as an example. On the other hand, if the CPU usage rate when the connection request from the terminal device 61 is accepted is equal to or higher than the second threshold value that is equal to or lower than the first threshold value, or if the CPU usage rate is the second threshold value when the connection request is accepted is equal to or greater than the threshold for a certain period of time S or longer, the controller 41 of the surface mounter 20 may not establish communication (remote connection) with the terminal device 61 . By doing so, it is possible to prevent the work performance of the mounting work of the surface mounter 20 from deteriorating due to the remote control.

However, if the CPU usage rate of the control unit 41 when receiving the connection request from the terminal device 61 is equal to or greater than the second threshold value that is equal to or less than the first threshold value, or if the control unit 41 Even if the state in which the CPU usage rate is equal to or higher than the second threshold has continued for a certain period of time or longer, if the predetermined preconditions for the surface mounter 20 to start the mounting work are not satisfied, Since no work is being performed on the board P, the work performance of the work on the board P is not affected even if communication with the terminal device 61 is established.
Therefore, communication with the terminal device 61 may be established when a predetermined precondition is not satisfied. This increases the possibility that the remote operation can be started early, and as a result, the possibility that the remote operation can be completed early is increased.

(4) In the above embodiment, the processing load of the control unit 41 is explained using the CPU usage rate as an example, but the processing load of the control unit 41 is not limited to the CPU usage rate. For example, the processing load may be the usage rate of the RAM or the communication load of the communication unit 49 (amount of data transmitted and received per unit time). Also, the processing load may be any two or more of the CPU usage rate, RAM usage rate, and communication load. For example, remote operation may be prohibited when the CPU usage rate is equal to or higher than a first threshold and the RAM usage rate is equal to or higher than a predetermined threshold.

Also, in remote operation, communication-related processes are executed to transmit screen data, log data, and the like. Therefore, the CPU usage rate of communication-related processes increases. Since the CPU usage rate can be grasped for each process, remote operation from the terminal device 61 may be prohibited when the CPU usage rate of the communication-related process reaches or exceeds the first threshold.

(5) In the above embodiment, transmission of log data was explained as an example of remote operation, but remote operation is not limited to this, and any operation that can be performed on the operation screen It's okay.

(6) In the above embodiment, the remote connection from the terminal device 61 is disconnected by the board working device 15 such as the surface mounter 20. You may disconnect the remote connection by disconnecting the .

(7) In the above embodiment, the case of prohibiting remote operation by disconnecting communication with the terminal device 61 has been described as an example, but remote operation may be prohibited while maintaining communication with the terminal device 61. . Since screen data, log data, and the like are not transmitted when remote operation is prohibited, deterioration in work performance of the surface mounter 20 can be suppressed even if communication with the terminal device 61 is maintained.

15... Board working device, 17... Screen printing machine (an example of a board working device), 18... Print inspection machine (an example of a board working device), 19... Dispenser (an example of a board working device), 20... Surface mounting machine (a board Example of working device), 21 Post-mounting visual inspection machine (an example of board working device), 23 Post-curing visual inspection device (an example of board working device), 41 Control unit, 49 Communication unit, 61 Terminal device , P... substrate

Claims (8)

A board working device for performing a predetermined work on a board,
a communication unit for communicating with a terminal device;
a control unit;
with
The control unit
a control process for controlling each part of the board working apparatus to perform the predetermined work;
a reception process of establishing communication with the terminal device via the communication unit and receiving a remote operation of the substrate working apparatus from the terminal device;
prohibition processing for prohibiting remote operation from the terminal device in response to a processing load of the control unit exceeding a first threshold when communication with the terminal device is established;
board working equipment. The board working apparatus according to claim 1,
The board working apparatus, wherein, in the prohibition process, the control unit prohibits remote operation from the terminal device by disconnecting communication with the terminal device. The board working apparatus according to claim 1 or claim 2,
In the prohibition process, if the processing load of the control unit is equal to or greater than the first threshold value and a predetermined precondition for starting the work by the board working device is met, Alternatively, board work, wherein a state in which the processing load of the control unit is equal to or greater than the first threshold continues for a certain period of time or more, and remote operation from the terminal device is prohibited when the predetermined precondition is satisfied. Device. The board working apparatus according to claim 3,
The board working apparatus, wherein the precondition is that the state of the board working apparatus is an operation ready state. The board working apparatus according to any one of claims 1 to 4,
In the reception process, the control unit performs the processing load when the processing load of the control unit when receiving the connection request from the terminal device is equal to or greater than a second threshold that is equal to or less than the first threshold, or the connection request a board working device that does not establish communication with the terminal device when the processing load of the control unit is equal to or greater than the second threshold value and continues for a predetermined time or longer at the time of receiving the request. The board working apparatus according to claim 5,
In the reception process, the control unit performs the processing load when the processing load of the control unit when receiving the connection request from the terminal device is equal to or greater than a second threshold that is equal to or less than the first threshold, or the connection request Even if the state in which the processing load of the control unit is equal to or greater than the second threshold has continued for a certain period of time or longer at the time of receiving the A board working device that establishes communication with the terminal device if a precondition is not met. The board working apparatus according to any one of claims 1 to 6,
The board working device, wherein the processing load is a processing load due to a communication-related process. A remote control method for a board working device for performing a predetermined work on a board, comprising:
a control step in which a controller of the board working apparatus controls each part of the board working apparatus to perform the predetermined work;
a reception step in which the control unit establishes communication with a terminal device via a communication unit and receives remote operation of the substrate working apparatus from the terminal device;
a prohibition step in which the control unit prohibits remote operation from the terminal device in response to a processing load of the control unit exceeding a first threshold when communication with the terminal device is established; ,
remote control method, including

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