Productivity comparison system and productivity comparison method

Abstract

To provide a productivity comparison system and a productivity comparison method that can appropriately compare productivity of a plurality of mounting lines.SOLUTION: A productivity comparison method acquires a first set of features for a plurality of first periods related to productivity of a first mounting line (ST1), acquires a second set of features for a plurality of second periods related to productivity of a second mounting line (ST2), calculates a similarity between the first set of features and the second set of features by combining the plurality of first periods and the plurality of second periods (ST3), and displays first productivity for the first periods and second productivity for the second periods on a display unit based on the similarity (ST6).SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a productivity comparison system and a productivity comparison method for comparing the productivity of multiple mounting lines. [Background technology]

[0002] In a mounting line that includes multiple component mounting devices, the production capacity of mounted boards fluctuates depending on the configuration. Therefore, the production capacities of multiple mounting lines are compared and displayed, and this information is used for productivity improvement activities (see, for example, Patent Document 1). Patent Document 1 discloses a system that estimates the production capacity of a mounting line by taking into account not only the specification information of the component mounting devices, but also equipment stoppages due to events such as work mistakes and operational errors on the mounting line, and compares and displays the multiple estimated production capacities. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2023-59474 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while conventional technologies including Patent Document 1 can estimate the production capacity of mounting lines with different configurations, the production capacity of a mounting line varies not only due to differences in configuration but also due to differences in the types of mounting boards produced, and therefore there is room for further improvement in order to accurately compare the productivity of multiple mounting lines.

[0005] Therefore, an object of the present disclosure is to provide a productivity comparison system and a productivity comparison method that can appropriately compare the productivity of multiple mounting lines. [Means for solving the problem]

[0006] The productivity comparison system of the present disclosure includes an acquisition unit that acquires a first set of features for a plurality of first periods related to the productivity of a first mounting line and a second set of features for a plurality of second periods related to the productivity of a second mounting line, a similarity calculation unit that calculates the similarity between the first set of features and the second set of features by combining a plurality of the first periods and a plurality of the second periods, and a display processing unit that displays the first productivity of the first mounting line for the first period and the second productivity of the second mounting line for the second period on a display unit based on the similarity.

[0007] The productivity comparison method disclosed herein acquires a first set of features for a plurality of first periods related to the productivity of a first mounting line and a second set of features for a plurality of second periods related to the productivity of a second mounting line, calculates a similarity between the first set of features and the second set of features by combining the plurality of first periods and the plurality of second periods, and displays on a display unit a first productivity of the first mounting line for the first period and a second productivity of the second mounting line for the second period based on the similarity. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to appropriately compare the productivity of multiple mounting lines. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a mounting system according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a block diagram illustrating a configuration of a mounting system (productivity comparison system) according to an embodiment of the present disclosure. [Figure 3] FIG. 1 is an explanatory diagram illustrating an example of a feature set created in a mounting system (productivity comparison system) according to an embodiment of the present disclosure. [Figure 4] FIG. 10 is an explanatory diagram of an example of similarity calculated in a mounting system (productivity comparison system) according to an embodiment of the present disclosure. [Figure 5] FIG. 10 is an explanatory diagram illustrating an example of a comparison condition setting screen displayed on a display unit included in a mounting system (productivity comparison system) according to an embodiment of the present disclosure. [Figure 6] FIG. 10 is an explanatory diagram illustrating an example of a productivity display screen displayed on a display unit included in a mounting system (productivity comparison system) according to an embodiment of the present disclosure. [Figure 7] 1 is a flow diagram of a productivity comparison method according to an embodiment of the present disclosure; DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, with reference to the drawings as appropriate, detailed descriptions will be given of embodiments that specifically disclose a productivity comparison system and a productivity comparison method according to the present disclosure. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially identical configurations may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the claims.

[0011] An embodiment of the present disclosure will be described in detail below with reference to the drawings. The configurations, shapes, etc. described below are examples for the purpose of explanation and can be modified as appropriate depending on the specifications of the mounting system, mounting line, management computer, component mounting device, etc. In the following, corresponding elements in all drawings will be given the same reference numerals, and duplicated explanations will be omitted.

[0012] First, the configuration of the mounting system 1 will be described with reference to Fig. 1. Fig. 1 is a configuration explanatory diagram of the mounting system 1 according to one embodiment of the present disclosure. The mounting system 1 is configured such that three mounting lines L1 to L3 arranged on a floor F are connected by a wired or wireless communication network 2 and are managed by a management computer 3. As will be described later, each of the mounting lines L1 to L3 is configured by connecting a plurality of production devices including a component mounting device, and has the function of producing mounted boards on which components are mounted. Note that the number of mounting lines L1 to L3 provided in the mounting system 1 does not need to be three, and may be one, two, four or more.

[0013] Next, the detailed configuration of mounting lines L1 to L3 will be described with reference to Figure 1. Mounting lines L1 to L3 have the same configuration, and below, mounting line L1 will be described. Mounting line L1 is configured by connecting production equipment such as printing device M1, component mounting devices M2 to M5, and reflow device M6 in series, in that order, from upstream (left side of the page) to downstream (right side of the page) in the board transport direction. The production equipment is connected to management computer 3 via communication network 2. Note that mounting line L1 is a group of production equipment connected via communication network 2, and the production equipment does not have to be physically connected to each other.

[0014] In Figure 1, printing device M1 has the function of printing solder paste onto a board through a screen mask. Component mounting devices M2 to M5 have the function of picking up components supplied from a feeder using nozzles attached to their heads, transporting them to mounting points on the board where the solder has been printed, and mounting them. Reflow device M6 has the function of heating the board on which the components have been mounted to melt the solder, then solidifying it, thereby soldering the components to the board.

[0015] The management computer 3 performs processes such as production management of the mounted boards produced on the mounting lines L1 to L3, creating programs and data used by each production device to produce mounted boards, and downloading them to each production device. The management computer 3 also functions as a productivity comparison device that compares and displays the productivity of the multiple mounting lines L1 to L3 at which they produce mounted boards.

[0016] Next, the configuration of the mounting system 1 will be described with reference to Fig. 2. Fig. 2 is a block diagram showing the configuration of the mounting system 1 (productivity comparison system) according to one embodiment of the present disclosure. Here, the configuration related to the function of the productivity comparison system, which compares and displays the productivity at which multiple mounting lines L1 to L3 produce mounted boards, will be mainly described. The mounting lines L1 to L3 have the same configuration, and the following describes mounting line L1. Furthermore, the production devices provided on mounting line L1 have the same configuration, and the following describes component mounting device M2.

[0017] 2, component mounting apparatus M2 includes an operation control unit 10, an operation unit 11, an apparatus memory unit 12, a monitoring unit 13, and an apparatus communication unit 14. The operation control unit 10 controls the operation unit 11 based on various data stored in the apparatus memory unit 12, thereby controlling the component mounting operation by component mounting apparatus M2. The operation control unit 10 controls the solder printing operation in printing apparatus M1 and the board heating operation in reflow apparatus M6.

[0018] The monitoring unit 13 monitors the production work on the component mounting device M2, and notifies the management computer 3 of performance information such as operating time, number of work pieces, number of components mounted, and model changeover. The monitoring unit 13 also monitors the occurrence of operational errors, such as component pickup errors or mounting errors, that occur on the component mounting device M2 during the production of mounted boards, and notifies the management computer 3 of performance information such as the time the operational error occurred and the details of the operational error. The device communication unit 14 is a communication interface, and sends and receives signals and data to and from other production devices and the management computer 3 via the communication network 2.

[0019] 2, the management computer 3 includes a management control unit 20, a management storage unit 21, a collection unit 22, an acquisition unit 23, a similarity calculation unit 24, a productivity calculation unit 25, a difference calculation unit 26, an average value calculation unit 27, a display processing unit 28, an input unit 29, a display unit 30, and a management communication unit 31. The processing units such as the management control unit 20, the collection unit 22, the acquisition unit 23, the similarity calculation unit 24, the productivity calculation unit 25, the difference calculation unit 26, the average value calculation unit 27, and the display processing unit 28 are realized, for example, by a memory that stores a control program executed by each processing unit, and a processor that executes the control program. The management control unit 20 manages the mounting system 1 based on the information stored in the management storage unit 21.

[0020] The input unit 29 is an input device such as a keyboard, a touch panel, or a mouse, and each processing unit provided in the management computer 3 executes various processes in accordance with operation commands and data input from the input unit 29. The display unit 30 is a display device such as a liquid crystal panel, and the display processing unit 28 displays various screens and various information on the display unit 30.

[0021] 2, the management communication unit 31 is a communication interface that transmits and receives signals and data to and from the production devices on the mounting lines L1 to L3 via the communication network 2. The management memory unit 21 is a storage device that stores various types of information. The management memory unit 21 stores information indicating, for example, a production plan and a maintenance plan. The management memory unit 21 is realized by, for example, a flash memory or an HDD (Hard Disk Drive). The management memory unit 21 stores production plan information 21a, mounting data 21b, performance information 21c, similarity data 21d, productivity data 21e, difference data 21f, average value data 21g, and the like.

[0022] 2, production plan information 21a is created in advance by a production plan creation device (not shown) or the like. Production plan information 21a includes information related to a production plan for producing mounted boards on mounting lines L1 to L3 during a predetermined period. For example, production plan information 21a includes production plans such as the type of mounted boards to be produced, the number of boards to be produced, the mounting lines L1 to L3 that will produce the mounted boards, the scheduled production start date and time, the scheduled production end date and time, the number of off-site setups, and the number of model changes. Mounting data 21b stores information such as information identifying the components to be mounted on the board (component numbers) and the mounting positions of the components on the board (X and Y coordinates) for each type of mounted board.

[0023] The collection unit 22 collects information on production results (operating time, number of components mounted, number of sheets produced, model changeover, etc.) and work errors that have occurred from the monitoring units 13 equipped in each production device of the mounting lines L1 to L3, and stores the information in the management memory unit 21 as performance information 21c.

[0024] 2, the acquisition unit 23 acquires feature sets for set periods of two set mounting lines from the performance information 21c. The following description is based on the assumption that a first mounting line L1 and a second mounting line L2 are set as the two mounting lines. That is, the acquisition unit 23 acquires a first feature set 47a for a plurality of first periods 41a related to the productivity of the first mounting line L1 and a second feature set 47b for a plurality of second periods 41b related to the productivity of the second mounting line L2 from the performance information 21c (see FIG. 3). Each of the plurality of first periods 41a and each of the plurality of second periods 41b are periods of the same length (e.g., one day).

[0025] For example, the types of features included in the first feature set 47a and the second feature set 47b can include the type of mounted boards produced (type of mounted board 42), the number of components mounted on the mounted board (total number of mounted components 43), the number of produced mounted boards (total number of produced mounted boards), the number of setup changes (number of external setup changes 44, number of model changes 45), and operating time (operating time 46) (see FIG. 3). That is, the types of features used are parameters (items) that are correlated with the productivity of the mounting lines L1 to L3 (having a large correlation coefficient with productivity).

[0026] 2, the similarity calculation unit 24 calculates the similarity R between the first feature set 47a and the second feature set 47b by combining a plurality of first periods 41a and a plurality of second periods 41b (see FIG. 4). The similarity calculation unit 24 associates the calculated similarity R with the first periods 41a and the second periods 41b and stores it in the management storage unit 21 as similarity data 21d.

[0027] Here, an example of a method for calculating the similarity R by the similarity calculation unit 24 will be described with reference to Figures 3 and 4. Figure 3 is an explanatory diagram of an example of a feature set created in the mounting system 1 (productivity comparison system) according to an embodiment of the present disclosure. Figure 3 is a table showing a first feature set 47a of the first mounting line L1 and a second feature set 47b of the second mounting line L2, which are used to calculate the similarity R, as well as first productivity 48a and second productivity 48b, which will be described later, for each of the first period 41a and the second period 41b.

[0028] 3, the first period 41a and the second period 41b are periods obtained by dividing the three days from March 1 to March 3 into daily intervals. For example, the first productivity 48a (Nu1) for "March 1" in the first period 41a (production period) on the first mounting line L1 (L1) is the productivity (UPH: Unit Per Hour) calculated by the productivity calculation unit 25 (described later) based on the production results included in the performance information 21c for "March 1." Furthermore, the types 42 of mounting boards produced on "March 1" on the first mounting line L1 are "P01" and "P02."

[0029] Furthermore, the total number of components mounted on the boards on "March 1" in the first mounting line L1 (total number of components mounted 43) is "Nm1." Note that the total number of components mounted 43 based on the performance information 21c also includes the number of components that were discarded without being mounted on the boards due to component pickup errors or the like in component mounting devices M2 to M5.

[0030] 3, the number of off-site setups (off-site setup count 44) performed on "March 1st" on the first mounting line L1 is "Np1." Here, off-site setup refers to the work of attaching a feeder and a reel for winding and storing carrier tape to an exchange cart that is detachable from component mounting devices M2 to M5 in a location separate from the first mounting line L1, in order to change the type of mounted boards produced on the first mounting line L1.

[0031] The number of times model changeovers were performed on "March 1st" on the first mounting line L1 (model changeover count 45) is "Nc1." Model changeovers here refer to work such as attaching replacement carts prepared by off-site setup to component mounting devices M2 to M5 or changing the production program of the production devices in order to change the type of mounted boards produced on the first mounting line L1. The time (operating time 46) that the production devices operated to produce mounted boards on "March 1st" on the first mounting line L1 is "Tp1."

[0032] 3, the first feature set 47a and the second feature set 47b are vectors made up of a plurality of feature amounts (in this example, type of mounting board 42, total number of mounted components 43, number of off-site setups 44, number of model changes 45, and operating time 46). The similarity calculation unit 24 then calculates a similarity R indicating the distance between the two vectors (first feature set 47a and second feature set 47b).

[0033] For example, the similarity calculation unit 24 calculates the Manhattan distance for each of the plurality of feature quantities, which are numerical data (total number of mounted components 43, number of off-site setups 44, number of model changeovers 45, and operating time 46). The similarity calculation unit 24 also calculates the Hamming distance for each of the plurality of feature quantities, which are data other than numerical data (type of mounting board 42). The similarity calculation unit 24 then calculates the average of the calculated Manhattan distance and Hamming distance ((Manhattan distance + Hamming distance) / 2) as the similarity R. The ratio between the Manhattan distance and the Hamming distance does not need to be equal (50% + 50%) and may be changed as appropriate.

[0034] FIG. 4 is an explanatory diagram of an example of similarity calculated in the mounting system 1 (productivity comparison system) according to an embodiment of the present disclosure. FIG. 4 shows an example of similarity R calculated based on the first feature set 47a and the second feature set 47b shown in FIG. 3. That is, the similarity calculation unit 24 calculates the similarity R for each combination of the first feature set 47a for the three first periods 41a and the second feature set 47b for the three second periods 41b. The smaller the similarity R, the more similar the production conditions of the first mounting line L1 and the second mounting line L2 are. For example, the similarity R decreases when the types of mounted boards produced are the same or when the types and numbers of components to be mounted are similar.

[0035] 4, among the combinations of the first feature set 47a in the first period 41a and the second feature set 47b in the second period 41b enclosed in the thick frame a, the similarity R for the combination indicated by the dotted line b, in which the first feature set 47a in the first period 41a is "March 3rd" and the second feature set 47b in the second period 41b is "March 1st," is the smallest at "0.99." This indicates that the production conditions for the first mounting line L1 on "March 3rd" are closest to the production conditions for the second mounting line L2 on "March 1st."

[0036] 2, the productivity calculation unit 25 calculates a first productivity 48a for each of the multiple first periods 41a of the first mounting line L1 based on the production results included in the performance information 21c, and stores the calculated first productivity 48a as productivity data 21e in the management storage unit 21. The productivity calculation unit 25 also calculates a second productivity 48b for each of the multiple second periods 41b of the second mounting line L2 based on the production results included in the performance information 21c, and stores the calculated second productivity 48b as productivity data 21e in the management storage unit 21. The acquisition unit 23 also acquires the first productivity 48a and the second productivity 48b from the production devices of the mounting lines L1 to L3 or from other computers, and stores the calculated first productivity 48a and the calculated second productivity 48b in the management storage unit 21 as productivity data 21e.

[0037] For example, the productivity calculation unit 25 calculates production capacity, such as the number of components mounted on a board per hour (UPH), for each hour as the first productivity 48a and the second productivity 48b. That is, the productivity calculation unit 25 divides the first period 41a and the second period 41b into multiple periods (e.g., hourly periods) and calculates the first productivity 48a and the second productivity 48b for each period. Furthermore, the acquisition unit 23 acquires the number of mounted boards produced per hour as the first productivity 48a and the second productivity 48b.

[0038] 2, the difference calculation unit 26 calculates the difference between the first productivity 48a in each of the multiple first periods 41a and the second productivity 48b in each of the multiple second periods 41b, and stores the calculated difference data 21f in the management storage unit 21. The difference calculation unit 26 also divides the first productivity 48a in each of the first periods 41a and the second productivity 48b in each of the second periods 41b into multiple periods (for example, every hour) and calculates the difference between each of the periods.

[0039] The average value calculation unit 27 calculates the average value of the difference between the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b for multiple combinations whose similarity R is within a predetermined range (for example, similarity R is 2 or less), and stores the calculated average value in the management memory unit 21 as average value data 21g.

[0040] 2, the display processing unit 28 causes the display unit 30 to display a comparison condition setting screen that accepts conditions under which the acquisition unit 23 acquires the first feature set 47a and the second feature set 47b from the performance information 21c (selection of mounting lines L1 to L3, setting of the period to be compared) and conditions under which the similarity calculation unit 24 calculates the similarity R (selection of features). Furthermore, the display processing unit 28 causes the display unit 30 to display a productivity display screen that displays a first productivity 48a in a first period 41a and a second productivity 48b in a second period 41b based on the calculated similarity R.

[0041] Next, an example of a comparison condition setting screen 50 that the display processing unit 28 displays on the display unit 30 will be described with reference to Fig. 5. Fig. 5 is an explanatory diagram showing an example of the comparison condition setting screen 50 displayed on the display unit 30 provided in the mounting system 1 (productivity comparison system) according to an embodiment of the present disclosure. The comparison condition setting screen 50 displays a mounting line selection item 51, a comparison period setting field 52, a feature value selection item 53, a cancel button 54, and a confirm button 55. The mounting line selection item 51 displays multiple selectable mounting lines L1 to L3, and two mounting lines for which productivity is to be compared are selected by pressing the check buttons. In this example, the "first mounting line L1" and the "second mounting line L2" are selected.

[0042] In the comparison period setting field 52, the period for comparing productivity is set by operating the input unit 29. In this example, the "period from March 1, 2024 to March 3, 2024" is set. In the feature selection item 53, multiple selectable features (type of mounted board 42, total number of mounted components 43, number of off-site setups 44, number of model changeovers 45, operating hours 46, total number of produced mounted boards) are displayed, and the features to be taken into consideration when calculating the similarity R (types of features to be included in the first feature set 47a and the second feature set 47b) are selected by using the check buttons.

[0043] 5, when the cancel button 54 is pressed by operating the input unit 29, the content that was input on the comparison condition setting screen 50 is canceled. When the enter button 55 is pressed by operating the input unit 29, the first productivity 48a and the second productivity 48b are calculated based on the conditions set in the mounting line selection item 51 and the comparison period setting field 52, and the similarity R is calculated based on the conditions set in the mounting line selection item 51, the comparison period setting field 52, and the feature selection item 53.

[0044] In this way, the display processing unit 28 causes the display unit 30 to display a comparison condition setting screen 50 for selecting, from among the multiple types of feature amounts, the multiple feature amount types to be used in the calculation of the similarity R by the similarity calculation unit 24. This allows the manager who plans productivity improvement activities for the mounting lines L1 to L3 to compare productivity by changing the combination of feature amounts to find conditions that are highly correlated with the improvement activities, and to appropriately implement improvements to the mounting lines L1 to L3.

[0045] Next, an example of the productivity display screen 60 displayed on the display unit 30 by the display processing unit 28 will be described with reference to Fig. 6. Fig. 6 is an explanatory diagram showing an example of the productivity display screen 60 displayed on the display unit 30 included in the mounting system 1 (productivity comparison system) according to an embodiment of the present disclosure. In this example, the decision button 55 is pressed on the comparison condition setting screen 50 shown in Fig. 5, and the productivity, similarity R, and the like calculated based on the conditions set on the comparison condition setting screen 50 are displayed. Also, in this example, the productivity display screen 60 displays a first productivity 48a for a first period 41a and a second productivity 48b for a second period 41b, and the like, for a plurality of combinations in which the similarity R is in a range of 2 or less.

[0046] The productivity display screen 60 displays a first selection item 61, a second selection item 62, an average difference value 63, and a graph display area 64. The first selection item 61 displays the combination of the first period 41a and the second period 41b and the similarity R, and the combination is selected using the radio button. In this example, the first selection item 61 displays two combinations in ascending order of similarity R, and "the combination of March 3rd on the first mounting line L1 and March 1st on the second mounting line L2, with a similarity R of 0.99" is selected.

[0047] 6, the second selection item 62 displays the average difference value 63 and the type of productivity (first productivity 48a, second productivity 48b) to be displayed in the graph display area 64, and the type of productivity to be displayed is selected using a radio button. In this example, "production volume" and "UPH" can be selected as the type of productivity, and "production volume" is selected.

[0048] The difference average value 63 displays the average value of the differences between the first productivity 48a in a plurality of first periods 41a and the second productivity 48b in a plurality of second periods 41b, for which the similarity R included in the average value data 21g is in the range of 2 or less. In this example, the average value (15.8 boards / hour) of the differences in the number of production sheets (second productivity 48b - first productivity 48a) for the two combinations displayed in the first selection item 61 is displayed. In other words, when comparing the productivity under production conditions with small similarity R, it can be seen that the number of mounted boards produced per hour (production number) is "15.8 boards" more on average on the second mounting line L2 than on the first mounting line L1.

[0049] 6, the graph display area 64 displays graphs relating to the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b, which are associated with the combination selected in the first selection item 61. In this example, the graph display area 64 displays a first bar graph 64a that displays the first productivity 48a (number of sheets produced) for each hour in the first period 41a (March 3) included in the productivity data 21e, a second bar graph 64b that displays the second productivity 48b (number of sheets produced) for each hour in the second period 41b (March 1), and the average value of each productivity. The average value of the first productivity 48a for "March 3" on the first mounting line L1 is "112 sheets / hour," and the average value of the second productivity 48b for "March 1" on the second mounting line L2 is "125 sheets / hour."

[0050] The graph display area 64 also displays the difference between the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b, which is related to the combination selected in the first selection item 61. In this example, the graph display area 64 displays a difference bar graph 64c that displays the difference between the first productivity 48a in the first period 41a (March 3) and the second productivity 48b in the second period 41b (March 1), which is included in the difference data 21f, for each hour, and the average value of the difference included in the average value data 21g.

[0051] This shows that the number of mounted boards produced on the second mounting line L2 on "March 1st" was "13 boards" more per hour than the number of mounted boards produced on the first mounting line L1 on "March 3rd." When the arrow buttons 65 displayed in the graph display area 64 are operated, the times displayed on the horizontal axes of the first bar graph 64a, second bar graph 64b, and difference bar graph 64c are scrolled in sync.

[0052] In this way, the display processing unit 28 displays the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b, which are associated with the combination having the smallest similarity R, together on the display unit 30 (first bar graph 64a, second bar graph 64b). Furthermore, the display processing unit 28 divides the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b into multiple periods (one hour each) and displays them on the display unit 30 (first bar graph 64a, second bar graph 64b).

[0053] The display processing unit 28 also causes the display unit 30 to display the difference between the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b (difference bar graph 64c). The display processing unit 28 also causes the display unit 30 to display the difference between the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b for each of the periods divided into a plurality of periods (one hour) (difference bar graph 64c). The display processing unit 28 also causes the display unit 30 to display the average value of the differences between the first productivities 48a in the plurality of first periods 41a and the second productivities 48b in the plurality of second periods 41b for which the similarity R falls within a predetermined range (average difference value 63).

[0054] Although the above description has been given with reference to an example in which the similarity calculation unit 24 calculates the similarity R based on the collected performance information 21c, the similarity calculation unit 24 may also calculate the similarity R based on the production plan information 21a. That is, the acquisition unit 23 may acquire first feature sets 47a for a plurality of first periods 41a and second feature sets 47b for a plurality of second periods 41b from the production plan included in the production plan information 21a, and the similarity calculation unit 24 may calculate the similarity R based on the first feature sets 47a and second feature sets 47b based on the production plan. In this case, the similarity R is calculated based on the minimum planned values ​​that do not include waste due to operational errors on mounting lines L1 to L3 in the total number of mounted components 43 or the total number of produced mounting boards.

[0055] Next, a productivity comparison method for comparing and displaying the productivity of mounting lines L1 to L3 based on similarity R will be described with reference to the flow in Fig. 7. Fig. 7 is a flow diagram of the productivity comparison method according to an embodiment of the present disclosure. The following description will be given on the assumption that performance information 21c related to the production of mounted boards on mounting lines L1 to L3 is collected and stored by collection unit 22 in management storage unit 21 of management computer 3.

[0056] First, the acquisition unit 23 acquires first feature sets 47a for multiple first periods 41a related to the productivity of the first mounting line L1 from the performance information 21c based on conditions set using the comparison condition setting screen 50 (FIG. 5) or the like (ST1: first feature set acquisition step).The acquisition unit 23 also acquires second feature sets 47b for multiple second periods 41b related to the productivity of the second mounting line L2 (ST2: second feature set acquisition step).

[0057] In FIG. 7, the similarity calculation unit 24 then calculates the similarity R between the first feature set 47a and the second feature set 47b by combining multiple first periods 41a and multiple second periods 41b based on the conditions set using the comparison condition setting screen 50 (FIG. 5) or the like (ST3: similarity calculation process).

[0058] Next, the productivity calculation unit 25 calculates a first productivity 48a for the first period 41a of the first mounting line L1 based on the production results included in the performance information 21c (ST4: first productivity calculation step).Furthermore, the productivity calculation unit 25 calculates a second productivity 48b for the second period 41b of the second mounting line L2 based on the production results included in the performance information 21c (ST5: second productivity calculation unit).

[0059] 7, the display processing unit 28 then displays the first productivity 48a in the first period 41a and the second productivity 48b in the second period 41b on the display unit 30 based on the similarity R (ST6: productivity display step) (FIG. 6). This allows the manager or the like to appropriately compare the productivity (first productivity 48a, second productivity 48b) of multiple mounting lines L1 to L3.

[0060] As described above, the mounting system 1 of this embodiment is a productivity comparison system that includes an acquisition unit 23 that acquires a first feature set 47a for a plurality of first periods 41a related to the productivity of the first mounting line L1 and a second feature set 47b for a plurality of second periods 41b related to the productivity of the second mounting line L2, a similarity calculation unit 24 that calculates a similarity R between the first feature set 47a and the second feature set by combining the plurality of first periods 41a and the plurality of second periods 41b, and a display processing unit 28 that displays a first productivity 48a for the first period 41a of the first mounting line L1 and a second productivity 48b for the second period 41b of the second mounting line L2 on the display unit 30 based on the similarity R.

[0061] This allows the manager or the like to appropriately compare the productivity (first productivity 48a, second productivity 48b) of the multiple mounting lines L1 to L3.

[0062] The management computer 3 described above is an example of a productivity comparison system. The productivity comparison system (mounting system 1) described above is configured such that the management computer 3 includes all of the functions of a storage unit and a processing unit, but the productivity comparison system is not limited to this configuration. For example, the productivity comparison system may be configured such that each of the mounting lines L1 to L3 includes a line management computer including a collection unit 22 that collects performance information 21c from the production equipment. The acquisition unit 23, similarity calculation unit 24, productivity calculation unit 25, difference calculation unit 26, average value calculation unit 27, and display processing unit 28 may be included in a computer different from the management computer 3. Some or all of the functions of the management computer 3 may be implemented on the cloud.

[0063] Furthermore, although the above description was given using an example in which productivity (first productivity 48a, second productivity 48b) was compared in units of mounting lines L1 to L3, the unit of comparison is not limited to mounting lines L1 to L3. For example, productivity may be compared in units of floor F on which multiple mounting lines L1 to L3 are located. Furthermore, the above description was given using an example in which the length of the period (first period 41a, second period 41b) for calculating productivity was in units of one day, but the length of the period for calculating productivity is not limited to one day. For example, it may be in units of one week, one month, one quarter, one day of the week, or one shift.

[0064] Although the embodiments of the present disclosure have been described above with reference to the drawings, it goes without saying that the present disclosure is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications, alterations, substitutions, additions, deletions, and equivalents within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present disclosure. Furthermore, the components of the above-described embodiments may be combined in any manner as long as they do not deviate from the spirit of the invention. [Industrial Applicability]

[0065] The productivity comparison system and productivity comparison method disclosed herein have the effect of being able to appropriately compare the productivity of multiple mounting lines, and are useful in the field of mounting components onto boards. [Explanation of symbols]

[0066] 1 Implementation system (productivity comparison system) L1~L3 mounting lines 41a 1st Period 41b 2nd period 47a First feature set 47b Second feature set 48a First Productivity 48b Secondary Productivity R similarity

Claims

1. an acquisition unit that acquires a first set of feature quantities for a plurality of first periods related to productivity of the first mounting line and a second set of feature quantities for a plurality of second periods related to productivity of the second mounting line; a similarity calculation unit that calculates a similarity between the first feature set and the second feature set by combining a plurality of the first periods and a plurality of the second periods; a display processing unit that displays a first productivity of the first mounting line in the first period and a second productivity of the second mounting line in the second period on a display unit based on the similarity.

2. The productivity comparison system according to claim 1 , wherein the display processing unit displays together the first productivity in the first period and the second productivity in the second period associated with the combination with the smallest degree of similarity.

3. a difference calculation unit that calculates a difference between a first productivity in the first period and a second productivity in the second period, The productivity comparison system according to claim 1 , wherein the display processing unit displays the difference.

4. a difference calculation unit that calculates a difference between a first productivity in each of the first periods and a second productivity in each of the second periods; an average value calculation unit that calculates an average value of the calculated differences, The productivity comparison system according to claim 1 , wherein the display processing unit displays an average value of the differences.

5. 5. The productivity comparison system according to claim 4, wherein the average value calculation unit calculates an average value of differences between the first productivity in the first period and the second productivity in the second period for a plurality of combinations in which the similarity is within a predetermined range.

6. 2. The productivity comparison system according to claim 1, wherein types of features included in the first feature set and the second feature set are at least one of types of mounting boards to be produced, numbers of components mounted on the mounting boards, numbers of mounting boards to be produced, number of setup changes, and operating hours.

7. 7. The productivity comparison system according to claim 6, wherein the display processing unit causes the display unit to display a screen for selecting, from the plurality of types of feature amounts, a plurality of types of feature amounts to be used in the calculation of the similarity by the similarity calculation unit.

8. 2. The productivity comparison system according to claim 1, wherein each of the plurality of first periods and each of the plurality of second periods are periods of the same length.

9. The productivity comparison system according to claim 8 , wherein the display processing unit displays the first productivity in the first period and the second productivity in the second period by dividing the first productivity in the first period into a plurality of periods.

10. a difference calculation unit that divides the first productivity in the first period and the second productivity in the second period into a plurality of periods and calculates a difference between the first productivity and the second productivity in each of the periods, The productivity comparison system according to claim 9 , wherein the display processing unit displays the difference between the periods.

11. the acquisition unit acquires, from a production plan, a plurality of first feature sets for the first periods and a plurality of second feature sets for the second periods; The productivity comparison system according to claim 1 , wherein the similarity calculation unit calculates the similarity based on the first feature set and the second feature set that are based on a production plan.

12. acquiring a first set of feature quantities for a plurality of first periods related to productivity of the first mounting line and a second set of feature quantities for a plurality of second periods related to productivity of the second mounting line; calculating a similarity between the first feature set and the second feature set by combining a plurality of the first periods and a plurality of the second periods; a first productivity of the first mounting line in the first period and a second productivity of the second mounting line in the second period, based on the similarity, displayed on a display unit;

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