JP7804076B2 - Display System - Google Patents

Description

The present disclosure relates to a display system.

The production management system described in International Publication No. 2014/068664 (Patent Document 1 below) is known as a component mounting line production management system that can halt the production of defective boards when a defective board is detected on the component mounting line. The component mounting line includes a conveyor line for conveying circuit boards, and multiple mounting machines and multiple product inspection devices arranged along the conveyor line. A production management computer that manages and monitors production on the component mounting line uses a reader arranged at the entrance of the conveyor line to read the board ID from the board ID recording unit of the circuit board inserted into the conveyor line, and associates mounted component information and other information for the circuit boards removed from the conveyor line with the board ID of the circuit board in a storage device.

When a defect in an electronic component mounting board is detected by any of the product inspection devices, the device where the defect occurred is identified and board transport on the transport line upstream of that device is stopped, and board transport on the transport line downstream of that device is also stopped.

International Publication No. 2014/068664

However, with the above-mentioned production management system, identifying the equipment where the defect occurred requires the operator to enter information about the equipment where the defect occurred into the production management computer. Furthermore, while instructions are displayed on the production management computer's display device or mobile terminal and given via voice to the operator to remove the cause of the defect in the equipment where the defect occurred, the information needed to identify the cause of the defect is not displayed on the mobile terminal, making it time-consuming to gather the necessary information.

The display system disclosed herein is a display system that forms part of a production line that produces component-mounted boards on which electronic components are mounted, and that displays information on the work status of machines that perform specified work on the boards on the display unit of a mobile device.It has a management unit that manages the work status information of the machines in association with board identification information provided on the board, and a selection unit that, when the mobile device reads the board identification information, selects from the management unit information on the work status of the machines involved in the work on the board as display information to be displayed on the display unit of the mobile device.

According to the present disclosure, by simply reading the identification information of a board or machine with a mobile device, the necessary information can be displayed on the display unit of the mobile device, eliminating the need to search for the necessary information.

FIG. 1 is a diagram showing the configuration of a display system. FIG. 2 is a plan view of the mounting machine. FIG. 3 is a schematic diagram showing how a component picked up by a suction nozzle is transported. FIG. 4 is a block diagram showing the electrical configuration of the mounting machine. FIG. 5 is a block diagram showing the electrical configuration of the display system. FIG. 6 is a schematic diagram showing a state in which the board ID is read by the mobile terminal and display information is displayed on the display unit of the mobile terminal. FIG. 7 is a flowchart showing the processing procedure of the display system according to the first embodiment. FIG. 8 shows an example of display information displayed on the display unit of the mobile terminal. FIG. 9 shows an example of simplified display information obtained by converting the display information of FIG. FIG. 10 is a schematic diagram showing a state in which the machine ID is read by the mobile terminal and display information is displayed on the display unit of the mobile terminal. FIG. 11 is a flowchart showing the processing procedure of the display system of the second embodiment. FIG. 12 shows an example of display information that notifies the operator that the suction rate of the target nozzle is poor and urges the operator to perform maintenance.

Description of the embodiments of the present disclosure
First, embodiments of the present disclosure will be listed and described.
(1) The display system of the present disclosure is a display system that forms part of a production line that produces component-mounted boards on which electronic components are mounted, and that displays information about the work status of machines that perform specified work on the boards on a display unit of a mobile terminal. The display system has a management unit that manages the information about the work status of the machines in association with board identification information provided on the boards, and a selection unit that, when the mobile terminal reads the board identification information, selects from the management unit information about the work status of the machines involved in the work on the boards as display information to be displayed on the display unit of the mobile terminal.

A production line for producing component-mounted boards consists of, for example, a printer, a mounting machine, a reflow oven, an inspection machine, etc. The printer prints solder paste on the intended mounting location on the board, the mounting machine places the components on the solder paste on the board, and the reflow oven heats the board with the components placed on it to solder them.

An embodiment of the present disclosure will be explained using a mounting machine on a production line as an example. Generally, information on the operating status of machines such as mounting machines is associated with board identification information and stored and managed in a management unit. However, when a mounting defect occurs during production, it is difficult to identify the cause based on information displayed by the mounting machine (information that merely notifies the user that an error has occurred, such as a "component pickup error" display). Furthermore, the server containing the management unit is often installed in a different location from the mounting machine, making it difficult to easily obtain information about the mounting defect at the production site where production is actually taking place.

Accordingly, with the display system disclosed herein, when a mobile device reads the board identification information of a board, the selection unit selects from the management unit information about the work status of the machines involved in the work on that board as display information to be displayed on the mobile device's display, and this information can be displayed on the mobile device's display. This makes it easier to identify the cause of errors, such as mounting defects, at the production site. In this way, the simple method of reading the board identification information with a mobile device allows the necessary information to be displayed on the mobile device's display, eliminating the need to search for the necessary information.

(2) When the mobile terminal reads the substrate identification information, it is preferable that the selection unit selects from the management unit as the display information information information on the work status related to an error status that occurred during work on the substrate on which the substrate identification information is provided.
The mobile terminal reads the board identification information of the board on which the error occurred (hereinafter sometimes referred to as the "error-occurring board"), and the selection unit selects information on the work status related to the error status and displays this on the mobile terminal. The information on the work status related to the error status includes information on the machines involved in the work on the error-occurring board.

(3) It is preferable that the system further has a condition setting unit that sets conditions that serve as selection criteria for the selection of the display information by the selection unit based on instructions from an operator, and that the selection unit selects information on the work status associated with the board identification information from the management unit as the display information based on the conditions set by the condition setting unit.
Before reading the board identification information with the mobile terminal, the operator can set in advance information about the work status that he or she wants to know by the condition setting unit. If the conditions are set by the condition setting unit, the selection unit can select information about the work status associated with the board identification information based on the conditions and display it on the mobile terminal.

(4) It is preferable that the system further includes an information generation unit that generates processing data based on the information managed by the management unit and inputs the data back into the management unit, and that the selection unit selects information on the work status including the processing data input into the management unit from the management unit as the display information.
In this way, information about the work status including the processing data can be displayed as display information on the display unit of the mobile terminal.

(5) It is preferable that the display device further includes a conversion unit that converts the display information into simplified display information suitable for the display unit of the mobile terminal.
If the display information is displayed on a mobile terminal as is, the amount of information may be too large and it may be difficult to view. In such cases, the conversion unit can convert the display information into simplified display information suitable for display on the display unit of the mobile terminal by, for example, thinning out the display information to reduce the amount of information, and then display the simplified display information on the mobile terminal.

(6) The display system disclosed herein is a display system that forms part of a production line that produces component-mounted boards on which electronic components are mounted, and that displays information about the work status of machines that perform specified operations on the boards on a display unit of a mobile terminal.The display system includes: a management unit that manages the work status information of the machine in association with machine identification information provided on the machine; and a selection unit that, when the mobile terminal reads the machine identification information, selects from the management unit the information about the work status of that machine as display information to be displayed on the mobile terminal.

According to the display system disclosed herein, when a mobile device reads a machine's machine identification information, the selection unit selects information about the machine's work status from the management unit as display information to be displayed on the mobile device, and this information can be displayed on the mobile device's display. This makes it easier to identify the cause of an error, such as a mounting defect, at the production site. In this way, the simple method of reading machine identification information with a mobile device allows the necessary information to be displayed on the mobile device's display, eliminating the need to search for the necessary information.

(7) When the mobile terminal reads the machine identification information, it is preferable that the selection unit selects, from the management unit, information on the work status related to an error status that occurred during work on the substrate by the machine to which the machine identification information is attached, as the display information.
The mobile terminal reads the machine identification information of the machine in which the error occurred, and the selection unit selects information on the work status related to the error status, which can be displayed on the mobile terminal.

(8) It is preferable that the apparatus further has a condition setting unit that sets conditions that serve as selection criteria for the selection of the display information by the selection unit based on instructions from an operator, and that the selection unit selects information on the work status associated with the machine identification information from the management unit as the display information based on the conditions set by the condition setting unit.
Before reading the machine identification information with the mobile terminal, the operator can set in advance the information on the work status that he or she wants to know by the condition setting unit. By setting the conditions by the condition setting unit, the selection unit can select the information on the work status associated with the machine identification information based on the conditions and display it on the mobile terminal.

(9) It is preferable that the system further includes an information generation unit that generates processing data based on the information managed by the management unit and inputs the data back into the management unit, and that the selection unit selects information on the work status including the processing data input into the management unit from the management unit as the display information.
In this way, information about the work status including the processing data can be displayed as display information on the display unit of the mobile terminal.

(10) It is preferable that the display device further includes a conversion unit that converts the display information into simplified display information suitable for the display unit of the mobile terminal.
If the display information is displayed on a mobile terminal as is, the amount of information may be too large and it may be difficult to view. In such cases, the conversion unit can convert the display information into simplified display information suitable for display on the display unit of the mobile terminal by, for example, thinning out the display information to reduce the amount of information, and then display the simplified display information on the mobile terminal.

[Details of the embodiment of the present disclosure]
Specific examples of the display system 10 of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

The display system 10 of the present disclosure displays display information D1 on the display unit 21 of the mobile terminal 20 by reading board identification information (hereinafter referred to as "board ID") using a mobile terminal 20 such as a smartphone terminal, and by reading machine identification information (hereinafter referred to as "machine ID"). The board ID and machine ID of the present disclosure are one-dimensional codes or two-dimensional codes, and the IDs are read by capturing an image of these codes with the camera of the mobile terminal 20. Below, a method of reading a board ID will be described as embodiment 1, and a method of reading a machine ID will be described as embodiment 2.

[Embodiment 1: Substrate ID]
<Component mounting equipment>
1 is a diagram showing a component mounting line 11. The component mounting line 11 is a production line that produces component-mounted boards PB on which electronic components P are mounted, and includes a printer 12, a mounter 13, a reflow oven 14, and an inspection machine 15. The printer 12, the mounter 13, the reflow oven 14, and the inspection machine 15 are examples of machines recited in the claims, and hereinafter may be referred to as machines or as the individual machines 12, 13, 14, and 15.

Each machine 12, 13, 14, and 15 is connected in series via a transport conveyor 16 (see Figure 2). The transport conveyor 16 transports the board B to be worked on along the component mounting line 11.

The printer 12 is a work device that performs a printing process on the board B. The printing process is a process of printing solder paste on the board B. The mounting machine 13 is a work device that performs a mounting process of electronic components P on the board B after the printing process. The reflow furnace 14 is a work device that heats the solder paste to solder the electronic components P to the board B, completing the component-mounted board PB. The inspection machine 15 is a work device that inspects the component-mounted board PB to which the electronic components P have been soldered.

The printer 12, mounting machine 13, reflow oven 14, and inspection machine 15 are connected to the server 18 via the LAN 17. The server 18 is a device that manages the component mounting line 11. The server 18 stores information such as production plan information. The production plan information includes the type of board B and the type of electronic component P to be used in production.

<Mounting machine>
2 is a plan view of the mounting machine 13. The mounting machine 13 includes a pair of transport conveyors 16 arranged on a base 30 to transport the board B, component supply units 31 arranged on both the front and rear sides of the transport conveyors 16, and a component mounting head unit 32 provided above the base 30.

The component supply units 31 are provided at four locations, upstream and downstream on the front and rear sides of both transport conveyors 16. In each component supply unit 31, multiple tape feeders 33 holding multiple electronic components P are arranged in parallel.

As shown in FIG. 3, the head unit 32 is movable between the component supply unit 31 and the board B so as to pick up electronic components P from the component supply position of the component supply unit 31 and mount them on the board B. Specifically, as shown in FIG. 2, the head unit 32 is supported by a head unit support member 34 extending in the X-axis direction (the direction indicated by X in FIG. 2) so as to be movable in the X-axis direction, and this head unit support member 34 is supported at both ends by a pair of guide rails 35 extending in the Y-axis direction (the direction indicated by Y in FIG. 2) so as to be movable in the Y-axis direction. The head unit 32 is driven in the X-axis direction by an X-axis motor 36 and in the Y-axis direction by a Y-axis motor 37.

The head unit 32 is equipped with multiple heads 38 aligned in the X-axis direction. Each head 38 is driven in the Z-axis direction (a direction perpendicular to both the X-axis and Y-axis directions, indicated by Z in Figure 2) by an elevator mechanism driven by a Z-axis motor 39, and is also driven in the rotational direction by a rotational drive mechanism driven by an R-axis motor 40.

A suction nozzle 41 is provided at the tip of each head 38 for suctioning an electronic component P and mounting it at a predetermined mounting position on the top surface of the board B. An air pressure supply means (not shown) is provided inside the head 38 to supply negative pressure during suction of the electronic component P, during transportation of the electronic component P, and while the head 38 is lowering, and positive pressure at the moment the electronic component P is mounted.

As shown in Figure 2, component recognition cameras 42 are installed on the base 30 on the front and rear sides of both transport conveyors 16. The component recognition cameras 42 capture images of the suction posture of the electronic component P picked up by the suction nozzle 41 from below in the Z-axis direction, thereby obtaining an image of the underside of the electronic component P. As shown in Figure 3, an illumination device 43 is provided near the component recognition camera 42 to illuminate the electronic component P picked up by the suction nozzle 41.

A side-view camera 44 is installed on the underside of the head unit support member 34. The side-view camera 44 extends downward from the center of the underside of the head unit support member 34, and captures an image of the suction posture of the electronic component P picked up by the suction nozzle 41 at its bottom end from the rear in the Y-axis direction, thereby obtaining an image of the side of the electronic component P. Other configurations are the same as those of the component recognition camera 42, and the captured image is converted into an analog image signal, which is output to the image processing unit 45.

A pair of board recognition cameras 51 are attached integrally to both sides of the head unit 32 on the outer surface of the head unit 32. These board recognition cameras 51 are used to capture images of fiducial marks on board B and recognize the position of board B. Other configurations are the same as those of the component recognition camera 42, and the captured images are converted into analog image signals, which are output to the image processing unit 45.

<Electrical configuration of mounting machine>
Next, the electrical configuration of the mounting machine 13, centered on the controller 46, will be described with reference to Fig. 4. The controller 46 includes an arithmetic processing unit 47, a mounting program storage means 48, a transport system data storage means 49, a motor control unit 50, and an image processing unit 45. A display unit 52 is connected to the arithmetic processing unit 47.

The motor control unit 50 is connected to the X-axis motor 36, Y-axis motor 37, Z-axis motor 39, and R-axis motor 40. The motor control unit 50 supplies the voltage and current required to drive each of the motors 36, 37, 39, and 40 based on the mounting program stored in the mounting program storage means 48. This allows the electronic component P to be freely transported in the X-axis, Y-axis, Z-axis, and R-axis directions.

The image processing unit 45 is connected to the component recognition camera 42, the side-view camera 44, and the board recognition camera 51. The image processing unit 45 recognizes the electronic components P based on the images captured by the component recognition camera 42, and inspects the suction state of the electronic components P based on these recognized images. The presence or absence of the electronic components P may be inspected using the side-view camera 44 instead of the component recognition camera 42, or may be inspected using both the component recognition camera 42 and the side-view camera 44.
<Electrical configuration of the display system>
Next, the electrical configuration of the display system 10 will be described with reference to Fig. 5. The server 18 has an input/output unit 60, an information processing unit 61, a management unit 62, an information generation unit 63, and an interface 64. The management unit 62 has a production information management unit 68 and a terminal information management unit 69.

The input/output unit 60 exchanges information with the mobile terminal 20 via a wireless LAN or the like. Information input from the mobile terminal 20 to the input/output unit 60 includes a board ID as board identification information provided on the board B, a machine ID as machine identification information provided on each machine 12, 13, 14, and 15, and a terminal ID as terminal identification information provided on the mobile terminal 20. The information output from the input/output unit 60 to the mobile terminal 20 may be information on the work status of any one of the machines 12, 13, 14, and 15, or may be information on the work status of multiple machines, and either information can be displayed on the display unit 21 of the mobile terminal 20.

The information processing unit 61 has a conversion unit 65, a condition setting unit 66, and a selection unit 67. The conversion unit 65 converts the work status information selected by the selection unit 67 into data (e.g., image data) compatible with the mobile terminal 20. The conversion unit 65 may, for example, further thin out the selected information. For example, the image shown in Figure 8 is an example of display information D1 before conversion, which displays work status information related to the error status when a component pickup error occurs. If this display information D1 is displayed as is on the display unit 21 of the mobile terminal 20, it is possible that the amount of information will be too large, making it difficult to see, slowing down operation, and other issues may arise.

Therefore, the above problem can be resolved by converting the display information D1 into simplified display information D2 suitable for the display unit 21 of the mobile terminal 20 by the conversion unit 65. For example, as shown in simplified display information D2 in Figure 9, an image I1 indicating that no electronic components P remain in the component supply unit 31, an image I2 of the bottom side of the electronic component P when it is picked up by the suction nozzle 41, and an image I3 of the side side of the electronic component P when it is picked up by the suction nozzle 41 are selected, and other information is omitted to reduce the amount of information, making it easier to view and preventing the operation of the mobile terminal 20 from slowing down.

The selection unit 67 selects work status information associated with each ID from the production information management unit 68 based on the board ID or machine ID. That is, when the mobile terminal 20 reads a board ID, the selection unit 67 selects from the production information management unit 68 information on the work status of the machine involved in the work on that board B as display information D1 to be displayed on the display unit 21 of the mobile terminal 20. Furthermore, when the mobile terminal 20 reads a board ID, the selection unit 67 selects from the production information management unit 68 information on the work status related to an error status that occurred during work on the board B on which the board ID is provided as display information, and when the mobile terminal 20 reads a machine ID, the selection unit 67 selects from the production information management unit 68 information on the work status related to an error status that occurred during work on the board B by the machine on which the machine ID is provided as display information.

When the selection unit 67 makes a selection, the type of work status information to be selected can be set in advance by the condition setting unit 66. The condition setting unit 66 sets conditions (hereinafter referred to as "selection conditions") that will serve as selection criteria for the selection of display information D1 by the selection unit 67 based on instructions from the operator. Specifically, instructions are input to the condition setting unit 66 from the mobile terminal 20, and the condition setting unit 66 sets the selection conditions based on the input instructions. The selection unit 67 selects the specified work status information from the production information management unit 68 based on the set selection conditions. In this way, it is possible to avoid sending a huge amount of work status information to the mobile terminal 20, and to select only the information the operator needs.

The production information management unit 68 manages information on the work status of each machine 12, 13, 14, and 15. Information is input to the production information management unit 68 from each machine 12, 13, 14, and 15 via the interface 64, and this information is stored and managed in association with at least one of the board ID and the machine ID. The information input from each machine 12, 13, 14, and 15 includes printing information from the printer 12, mounting information from the mounter 13, inspection results from the inspection machine 15, etc.

The printing information of the printer 12 is associated with the board ID and machine ID and managed by the production information management unit 68. The mounting information of the mounting machine 13 is associated with the board ID and machine ID and managed by the production information management unit 68. The mounting information of the mounting machine 13 includes information on mounting defects. The inspection results of the inspection machine 15 are associated with the board ID and machine ID and managed by the production information management unit 68. The inspection results of the inspection machine 15 include defect information such as mounting defects.

The information generation unit 63 generates processing data based on information managed by the production information management unit 68. In other words, the production information management unit 68 stores a large amount of pre-processing information, and the information generation unit 63 reads the large amount of pre-processing information stored in the production information management unit 68 to generate processing data. This processing data is then input back into the production information management unit 68 by the information generation unit 63 and stored. Pre-processing information is, for example, information indicating whether an electronic component P was successfully picked up, and processing data is, for example, data on the pickup rate when multiple electronic components P are picked up. Generating processing data based on a large amount of pre-processing information in this way makes it easier to read than a large amount of pre-processing information. The information generation unit 63 may, for example, graph the numerical data of the machine management information in a chronological order to make it easier to read. The information generation unit 63 may also display information on the work status when a machine malfunctions (work information during an error) in comparison with information on the work status when the machine is operating normally.

The terminal information management unit 69 manages the terminal ID of the mobile terminal 20. When a terminal ID is input to the input/output unit 60, if this terminal ID is a terminal ID managed by the terminal information management unit 69, information on the work status selected by the selection unit 67 is output to the mobile terminal 20. On the other hand, if the input terminal ID is not a terminal ID managed by the terminal information management unit 69, the selection work by the selection unit 67 is not performed, and a warning indicating that the mobile terminal 20 is not managed is displayed on the display unit 21 of the mobile terminal 20.

<Display system overview>
6 shows how, when an error such as a mounting defect is detected by the inspection machine 15, the mobile terminal 20 reads the board ID of the component-mounted board PB on which the error occurred. When the mobile terminal 20 reads the board ID, information about the machines involved in the work on the board B on which the error occurred is displayed on the display unit 21 of the mobile terminal 20. An operator can identify the cause of the error at the production site based on the information displayed on the display unit 21.

Display unit 21 displays information such as the suction rate of the feeder and nozzle in use, the maintenance history of the feeder and nozzle in use, captured images of the nozzle in use, and images of the component being picked up. For example, by checking the captured image of the nozzle in use before starting work, it is possible to detect the presence of foreign matter or chipping at the tip. The operator determines whether the error is due to equipment maintenance from the information displayed on display unit 21 of mobile terminal 20, and if the error is due to insufficient maintenance, replace the equipment in question with one that has been maintained. For example, in the case of suction nozzle 41, whether or not maintenance is insufficient is determined if the number of times that suction nozzle 41 has performed suction is greater than a preset threshold.

<Display system processing procedure>
Next, the processing procedure of the display system 10 will be described with reference to the flowchart of Fig. 7. When the board ID of board B is captured by a camera mounted on the mobile terminal 20 (see Fig. 6), the board ID is read into the mobile terminal 20 (step S10). When the terminal ID of the mobile terminal 20 is input to the input/output unit 60, the input terminal ID is sent to the terminal information management unit 69. If the input terminal ID matches a terminal ID managed by the terminal information management unit 69, it is determined that the mobile terminal 20 is a registered terminal (YES in step S11). If they do not match, it is determined that the mobile terminal 20 is not a registered terminal (NO in step S12). If it is determined that the mobile terminal 20 is not a registered terminal, the processing ends without accepting input of the board ID from the mobile terminal 20.

If it is determined that the mobile terminal 20 is a registered terminal, the board ID is input from the mobile terminal 20 to the input/output unit 60 (step S12). If it is determined that board B is an error-occurring board based on the input board ID (YES in step S13), the selection unit 67 selects information necessary for analyzing the cause of the error from the production information management unit 68 (step S14). On the other hand, if it is determined that board B is not an error-occurring board based on the input board ID (NO in step S13), all information related to the machine used to produce board B whose board ID was read is obtained from the production information management unit 68 (step S15).

The information selected from the production information management unit 68 or all information acquired from the production information management unit 68 is converted by the conversion unit 65 into simplified display information D2 suitable for display on the display unit 21 of the mobile terminal 20 (step S16), and this simplified display information D2 is transmitted from the input/output unit 60 to the mobile terminal 20 (step S17). In this way, information on the machine's work status is displayed as simplified display information D2 on the display unit 21 of the mobile terminal 20 (see Figure 6).

<Effects of First Embodiment>
The display system 10 of the present disclosure is a display system 10 that constitutes a component mounting line 11 that produces component-mounted boards PB on which electronic components P are mounted, and that displays information about the work status of machines that perform predetermined work on boards B on a display unit 21 of a mobile terminal 20, and has a production information management unit 68 that manages the information about the work status of the machines in association with a board ID provided on the board B, and a selection unit 67 that, when the mobile terminal 20 reads the board ID, selects from the production information management unit 68 information about the work status of the machines involved in the work on the board B as display information D1 to be displayed on the display unit 21 of the mobile terminal 20.

According to the display system 10 of the present disclosure, when the mobile terminal 20 reads the board ID of board B, the selection unit 67 selects information on the work status of the machines involved in the work on board B from the production information management unit 68 as display information D1 to be displayed on the mobile terminal 20, and this information can be displayed on the display unit 21 of the mobile terminal 20. This makes it easier to identify the cause of an error, such as a mounting defect, at the production site. In this way, the simple method of reading the board ID with the mobile terminal 20 allows the necessary information to be displayed on the display unit 21 of the mobile terminal 20, eliminating the need to search for the necessary information.

When the mobile terminal 20 reads the board ID, the selection unit 67 preferably selects, from the production information management unit 68, information on the work status related to an error status that occurred during work on the board B on which the board ID is attached, as display information D1.
The mobile terminal 20 reads the board ID of the board B on which the error occurred, and the selection unit 67 selects information on the work status related to the error status, and this can be displayed on the mobile terminal 20.

It further has a condition setting unit 66 that sets conditions that serve as selection criteria for the selection of display information D1 by the selection unit 67 based on instructions from the operator, and it is preferable that the selection unit 67 selects information on the work status associated with the board ID from the production information management unit 68 as display information D1 based on the conditions set in the condition setting unit 66.
Before reading the board ID with the mobile terminal 20, information about the work status that the operator wants to know can be set in advance by the condition setting unit 66. If conditions are set by the condition setting unit 66, the selection unit 67 can select information about the work status associated with the board ID based on the conditions and display this on the mobile terminal 20.

It is preferable that the system further includes an information generating unit 63 that generates processing data based on information managed by the production information managing unit 68 and inputs the data back into the production information managing unit 68, and the selecting unit 67 selects information on the work status including the processing data input to the production information managing unit 68 from the production information managing unit 68 as display information D1.
In this way, information about the work status including the processing data can be displayed on the display unit 21 of the mobile terminal 20 as display information D1.

It is preferable that the mobile terminal 20 further includes a conversion unit 65 that converts the display information D<b>1 into simplified display information D<b>2 suitable for the display unit 21 of the mobile terminal 20 .
If the display information D1 is displayed as is on the mobile terminal 20, the amount of information may be too large and the information may be difficult to see. In this case, the conversion unit 65 converts the display information D1 into simplified display information D2 suitable for display on the display unit 21 of the mobile terminal 20 by, for example, thinning out the display information D1 to reduce the amount of information, and the simplified display information D2 can be displayed on the mobile terminal 20.

[Embodiment 2: Machine ID]
Next, a second embodiment will be described. In the first embodiment, a method was described in which the display information D1 is displayed on the display unit 21 by reading the board ID of the board B using the mobile terminal 20, but in the second embodiment, a method is described in which the display information D1 is displayed on the display unit 21 by reading the machine ID of each machine 12, 13, 14, and 15 using the mobile terminal 20. For example, if a board ID is not set for the board B, or if the board B is located inside a machine where it cannot be removed and the board ID cannot be read, the cause of the error can be identified by tracing the machine ID used to produce the board B. Descriptions of configurations that overlap with the first embodiment will be omitted.

<Display system overview>
10 shows how, when an error such as a component pickup error is detected in a machine such as the mounting machine 13, the mobile terminal 20 reads the machine ID of the machine in which the error was detected. When the mobile terminal 20 reads the machine ID, the selection unit 67 selects information about the work status of that machine from the production information management unit 68 as display information D1 to be displayed on the display unit of the mobile terminal 20. When the mobile terminal 20 reads the machine ID, the selection unit 67 also selects, from the production information management unit 68, information about the work status related to an error status that occurred in work on a board B by the machine to which the machine ID is attached as display information D1. The information selected by the selection unit 67 is displayed on the display unit 21 of the mobile terminal 20.

Display unit 21 displays information such as the suction rate of the feeder in use, the maintenance history of the feeder in use, the suction rate of the nozzle in use, the maintenance history of the nozzle in use, captured images of the nozzle in use, and suction images of the component. For example, if the suction rate of the nozzle in use falls below the threshold value of 95%, it is determined that the suction rate of the nozzle in use is poor. The operator determines from the information displayed on display unit 21 of mobile terminal 20 whether the error is due to insufficient maintenance of the equipment, and if the error is due to insufficient maintenance, replace the relevant equipment with one that has been maintained.

<Display system processing procedure>
Next, the processing procedure of the display system 10 will be described with reference to the flowchart of FIG. 11 . When the machine ID of the machine is captured by a camera mounted on the mobile terminal 20, or when the mobile terminal 20 is connected to the machine, the machine ID is read into the mobile terminal 20 (step S20). When the terminal ID of the mobile terminal 20 is input to the input/output unit 60, the input terminal ID is sent to the terminal information management unit 69. If the input terminal ID matches a terminal ID managed by the terminal information management unit 69, the mobile terminal 20 is determined to be a registered terminal (YES in step S21). If they do not match, the mobile terminal 20 is determined to be an unregistered terminal (NO in step S22). If it is determined that the mobile terminal 20 is an unregistered terminal, the processing ends without accepting input of a machine ID from the mobile terminal 20.

If it is determined that the mobile terminal 20 is a registered terminal, the machine ID is input from the mobile terminal 20 to the input/output unit 60 (step S22). If it is determined that an error has occurred most recently on the machine with the input machine ID (YES in step S23), the selection unit 67 selects information necessary for analyzing the cause of the error from the production information management unit 68 (step S24). On the other hand, if it is determined that no error has occurred most recently on the machine with the input machine ID (NO in step S23), all information about that machine is obtained from the production information management unit 68 (step S25).

The information selected from the production information management unit 68 or all information acquired from the production information management unit 68 is converted by the conversion unit 65 into simplified display information D2 suitable for display on the display unit 21 of the mobile terminal 20 (step S26), and this simplified display information D2 is transmitted from the input/output unit 60 to the mobile terminal 20 (step S27). In this way, information on the machine's work status is displayed as simplified display information D2 on the display unit 21 of the mobile terminal 20 (see Figure 10).

<Display system notification function>
The display system 10 has a function to notify an operator of information such as urging them to perform maintenance. Fig. 12 shows an example of display information D1 that notifies the operator that the suction rate of a target nozzle is poor and urges them to perform maintenance. Specifically, thresholds such as suction rate and maintenance timing are set for each piece of equipment, such as the feeder or nozzle in use, and the ID of the machine or board B where the error occurred is read. If any information about the equipment involved in the error falls below the set threshold, the operator is notified. This allows the operator to immediately replace the target equipment and perform maintenance.

<Effects of the Second Embodiment>
The display system 10 of the present disclosure is a display system 10 that constitutes a component mounting line 11 that produces component-mounted boards PB on which electronic components P are mounted, and that displays information about the work status of machines that perform predetermined work on boards B on a display unit 21 of a mobile terminal 20, and has a production information management unit 68 that manages the information about the work status of the machine in association with a machine ID provided on the machine, and a selection unit 67 that, when the mobile terminal 20 reads the machine ID, selects from the production information management unit 68 the information about the work status of that machine as display information D1 to be displayed on the mobile terminal 20.

According to the display system 10 of the present disclosure, when the mobile terminal 20 reads the machine ID of a machine, the selection unit 67 selects information about the work status of that machine from the production information management unit 68 as display information D1 to be displayed on the mobile terminal 20, and this information can be displayed on the display unit 21 of the mobile terminal 20. This makes it easier to identify the cause of an error, such as a mounting defect, at the production site. In this way, the simple method of reading the machine ID with the mobile terminal 20 allows the necessary information to be displayed on the display unit 21 of the mobile terminal 20, eliminating the need to search for the necessary information.

When the mobile terminal 20 reads the machine ID, the selection unit 67 preferably selects, from the production information management unit 68, information on the work status related to an error status that occurred during work on the board B by the machine to which the machine ID is attached, as display information D1.
The mobile terminal 20 reads the machine ID of the machine in which the error occurred, and the selection unit 67 selects information on the work status related to the error status, and this information can be displayed on the mobile terminal 20.

It further has a condition setting unit 66 that sets conditions that serve as selection criteria for the selection of display information D1 by the selection unit 67 based on instructions from the operator, and it is preferable that the selection unit 67 selects information on the work status associated with the machine ID from the production information management unit 68 as display information D1 based on the conditions set in the condition setting unit 66.
Before the machine ID is read by the mobile terminal 20, information on the work status that the operator wants to know can be set in advance by the condition setting unit 66. If conditions are set by the condition setting unit 66, the selection unit 67 can select information on the work status associated with the machine ID based on the conditions and display it on the mobile terminal 20.

It is preferable that the system further includes an information generating unit 63 that generates processing data based on information managed by the production information managing unit 68 and inputs the data back into the production information managing unit 68, and the selecting unit 67 selects information on the work status including the processing data input to the production information managing unit 68 from the production information managing unit 68 as display information D1.
In this way, information about the work status including the processing data can be displayed on the display unit 21 of the mobile terminal 20 as display information D1.

It is preferable that the mobile terminal 20 further includes a conversion unit 65 that converts the display information D<b>1 into simplified display information D<b>2 suitable for the display unit 21 of the mobile terminal 20 .
If the display information D1 is displayed as is on the mobile terminal 20, the amount of information may be too large and the information may be difficult to see. In this case, the conversion unit 65 converts the display information D1 into simplified display information D2 suitable for display on the display unit 21 of the mobile terminal 20 by, for example, thinning out the display information D1 to reduce the amount of information, and the simplified display information D2 can be displayed on the mobile terminal 20.

Other Embodiments
(1) In the above-described first and second embodiments, codes such as one-dimensional codes and two-dimensional codes are used as examples of the board ID and the machine ID, but a wireless tag may also be used. In this case, the board ID and the machine ID may be read by bringing the mobile terminal 20 close to the wireless tag and receiving the radio signal emitted by the wireless tag with the receiving unit of the mobile terminal 20.

(2) In the above embodiments 1 and 2, a smartphone terminal is used as an example of the mobile terminal 20, but a tablet terminal, which is larger than a smartphone terminal, may also be used.

(3) While the above-described first embodiment illustrates a case where a mounting defect such as a component pickup error by the mounter 13 is detected, the display system of the present disclosure can also be applied when a printing defect by the printer 12 is detected. It can also be applied when defects are detected by both the mounter 13 and the printer 12. In other words, by communicating between the mobile terminal 20 and each of the multiple machines that make up the production line, information about the multiple machines can be displayed on the display unit 21 of the mobile terminal 20.

(4) Figure 10 of the above embodiment 2 illustrates an example in which an error is detected in the mounting machine 13, but the display system of the present disclosure can also be applied in the case in which an error is detected in the printing machine 12.

10: Display system 11: Component mounting line (production line) 12: Printer (machine) 13: Mounting machine (machine) 14: Reflow furnace (machine) 15: Inspection machine (machine) 16: Transport conveyor 17: LAN 18: Server 20: Mobile terminal 21: Display unit 30: Base 31: Component supply unit 32: Head unit 33: Tape feeder 34: Head unit support member 35: Guide rail 36: X-axis motor 37: Y-axis motor 38: Head 39: Z-axis motor 40: R-axis motor 41: Suction nozzle 42: Component recognition camera 43: Lighting device 44: Side-view camera 45: Image processing unit 46: Controller 47: Arithmetic processing unit 48: Mounting program storage means 49: Transport system data storage means 50: Motor control unit 51: Board recognition camera 52: Display unit 60: Input/output unit 61: Information processing unit 62: Management section 63: Information generation section 64: Interface 65: Conversion section 66: Condition setting section 67: Selection section 68: Production information management section 69: Terminal information management section B: Board D1: Display information D2: Simplified display information P: Electronic component PB: Component mounting board I1, I2, I3: Captured image

Claims (4)

A display system that constitutes a production line that produces component-mounted boards on which electronic components are mounted, and that displays information about the operation status of machines that perform predetermined operations on the boards on a display unit of a mobile terminal,
a management unit that manages information on the working status of the machine in association with board identification information provided on the board;
a selection unit that, when the mobile terminal reads the board identification information, selects, from the management unit, information on the work status of the machines involved in the work on the board as display information to be displayed on a display unit of the mobile terminal;
It has
the selection unit selects information required by an operator from among pieces of information constituting information on work status associated with the board identification information of one of the boards;
the display system further includes a condition setting unit that receives, from an operator, a setting of a condition that serves as a selection criterion for the selection of the display information by the selection unit;
The selection unit selects, from the management unit, information on a work status associated with the board identification information based on the conditions set by the condition setting unit, as the display information. The display system of claim 1, wherein when the mobile terminal reads the board identification information, the selection unit selects, from the management unit, information on the work status related to an error status that occurred during work on the board on which the board identification information is provided, as the display information. further comprising an information generating unit that generates processing data based on the information managed by the managing unit and inputs the processing data again to the managing unit;
3. The display system according to claim 1, wherein the selection unit selects, from the management unit, information on the work status including the processing data input to the management unit as the display information. The display system described in claim 1 or claim 2 further includes a conversion unit that converts the display information into simplified display information suitable for the display unit of the mobile terminal.