JP2024062801A - Process control device, process control method, process control program, and storage medium - Google Patents

Abstract

To grasp intuitively an amount of accumulated work-in-progress inventory for processes on a manufacturing line.SOLUTION: A process control device (10) includes: an acquisition unit (1) that obtains an accumulated amount of in-process inventory at each process in a product manufacturing line that includes two or more processes; a conversion unit (2) that converts the accumulated amount into index data; a creation unit (3) that creates display data that associates icons indicating each manufacturing device in each of the processes with the index data in each of the processes; a storage unit (4) that stores the display data and the time at which the accumulated amount is obtained in association with each other; and a display control unit (5) that displays these data on a display unit (6).SELECTED DRAWING: Figure 1

Description

This disclosure relates to a process management device, a process management method, a process management program, and a recording medium.

When work-in-process inventory is backed up on a product manufacturing line, the inventory is not immediately processed by the equipment, resulting in waiting times. This can lead to a decrease in the production efficiency of the manufacturing line. Furthermore, the energy required to produce inventory that is not immediately processed can be said to be wasted energy, and this kind of wasted energy is also generated. Under these conditions, Patent Document 1 describes a method for showing the amount of work-in-process inventory for each process on a time axis and displaying it in a heat map in order to grasp the backlog of work-in-process inventory.

JP 2020-190782 A

The above-mentioned method of displaying the amount of backlogged work-in-process inventory does not reflect information about factors that may affect the backlog of work-in-process inventory, making it difficult for managers to understand the cause of the amount of work-in-process inventory. For this reason, it is desirable to realize a process management device that allows managers to easily understand the amount of backlogged work-in-process inventory being processed by equipment on the production line.

A process management device according to one aspect of the present disclosure is characterized in that it includes an acquisition unit that acquires the amount of in-process inventory held up at each manufacturing process in a production line for a product including two or more manufacturing processes, a conversion unit that converts the held up amount into index data, a creation unit that creates display data that associates an icon representing each manufacturing device arranged to simulate the arrangement of the manufacturing devices at each manufacturing process with the index data at each manufacturing process, a storage unit that associates and stores the display data with the time at which the held up amount was acquired at each manufacturing process, and a display control unit that causes a display unit to display the relationship between the display data and the time.

The process management method according to one aspect of the present disclosure is characterized by including an acquisition step of acquiring the amount of backlog of work-in-process inventory at each manufacturing process in a product manufacturing process including two or more processes, a conversion step of converting the backlog into index data, a creation step of creating display data in which an icon representing each manufacturing device arranged to simulate the arrangement of the manufacturing devices at each manufacturing process corresponds to the index data at each manufacturing process, a storage step of storing the display data in association with the time at which the backlog amount was acquired at each manufacturing process, and a display step of displaying the relationship between the display data and the time on a display unit.

According to one aspect of the present disclosure, a manager can easily grasp the amount of work-in-progress inventory being processed by equipment on a production line.

FIG. 1 is a block diagram showing a configuration of a process management device according to one embodiment of the present disclosure. Each diagram in FIG. 2 is an example of a display screen displayed by the display unit. Each diagram in FIG. 3 is an example of a display screen including an additional information panel displayed on the display unit. Each diagram in FIG. 4 is an example of a display screen displayed by the display unit, which indicates the relationships between the manufacturing processes with colorable lines. FIG. 5 is a flowchart showing the flow of a process control method according to one embodiment of the present disclosure.

In this disclosure, a "production line" refers to a series of manufacturing processes for producing any product, and includes two or more manufacturing processes. There is no particular limit to the number of manufacturing processes included in a production line, as long as it is two or more. In a production line, the same manufacturing process may be repeated, or multiple processes may be repeated. Taking an example of a production line consisting of manufacturing processes in the order of process 1, process 2, and process 3, the production line may repeat only process 1 multiple times, or it may be a production line that performs processes 1 to 3 and then performs processes 1 to 3 again.

For the purposes of this disclosure, "work-in-process inventory" refers to inventory that has been introduced into a production line and the production process is incomplete. "Backlogged amount" refers to the amount of inventory that is actually backlogged at any process or between processes. Backlogged amount may be a real number or a relative value.

In this disclosure, "icon" refers to an image associated with each manufacturing process included in a production line, which is displayed on the display unit by the process management device of the present disclosure. The icons are associated with each manufacturing process by being arranged to simulate the arrangement of each manufacturing device, and at least one of the retention amount and the increase or decrease in retention amount is reflected by an arbitrary display form. Hereinafter, the arrangement information of the icons on the screen may be referred to as the "icon layout."

[Process control device 10]
A process control apparatus 10 according to an embodiment of the present disclosure will be described in detail below. Fig. 1 is a functional block diagram of the process control apparatus 10 according to an aspect of the present disclosure. Reference numeral 101 in Fig. 1 indicates the configuration of the process control apparatus 10, and reference numeral 102 in Fig. 1 indicates data stored in the storage unit 4 in particular. The process control apparatus 10 has an acquisition unit 1, a conversion unit 2, a creation unit 3, a storage unit 4, and a display control unit 5. The process control apparatus 10 outputs display data T3 to the display unit 6.

(Acquisition Unit 1)
The acquisition unit 1 acquires the amount of in-process inventory held up T11 at each manufacturing process in the production line. In addition to the amount of in-process inventory held up T11 at each manufacturing process, the acquisition unit 1 may acquire the amount of in-process inventory held up T12 between manufacturing processes. The amount of in-process inventory held up T1 at any time acquired by the acquisition unit 1 may be associated with the time at which the amount of in-process inventory held up T1 (hereinafter, sometimes referred to as "amount of in-process inventory held up T1") was acquired (hereinafter, sometimes simply referred to as "time T4"). The acquisition unit 1 can output the amount of in-process inventory held up T1 acquired to the conversion unit 2. The amount of in-process inventory held up T1 acquired may be, but is not limited to, the density of in-process inventory, the number of pieces of in-process inventory, the weight of in-process inventory, the volume of in-process inventory, the height of in-process inventory, and the length of in-process inventory. The amount of in-process inventory held up T1 may be a real number or a relative value.

The acquisition unit 1 may acquire any information related to each manufacturing process in addition to the information related to the retention amount T1. For example, the acquisition unit 1 may further acquire information such as the operating rate of each manufacturing device, the production speed (pieces/hour) of each manufacturing process, and the input speed (pieces/hour) of work-in-progress inventory to each manufacturing process.

(Conversion unit 2)
The conversion unit 2 converts the accumulation amount T1 acquired by the acquisition unit 1 into index data T2. The "index data T2" may be the accumulation amount T1 itself acquired by the acquisition unit, or at least any one of data indicating an increase or decrease in the accumulation amount T1. The data indicating an increase or decrease in the accumulation amount T1 may be a rate of change in the accumulation amount T1 at the target time compared to the accumulation amount T1 at the reference time.

In addition, the index data T2 may be icon display setting information for indicating at least one of the retention amount T1 and the increase or decrease in retention amount T1 by the display form of an icon. The icon display setting information may set the display form of an icon with excellent visibility. Specific examples of icons will be described later.

The index data T2 may further include data based on the amount of in-process inventory held up between each manufacturing process T12. The amount of in-process inventory held up between processes T12 may be converted in the conversion unit 2 into display setting information similar to the amount of in-process inventory held up between processes T11, or may be converted into display setting information different from the amount of in-process inventory held up between processes T11. In addition, in the display unit 6, the amount of in-process inventory held up between processes T12 may be shown in the corresponding location between the icons of each manufacturing process, or may be displayed as included in either the previous process or the next process. By displaying the amount of in-process inventory held up between each manufacturing process T12 as an icon, it becomes easier for the manager to recognize the amount of in-process inventory held up between each manufacturing process T12.

(Creation Department 3)
The creation unit 3 creates display data T3 in which an icon indicating each manufacturing device arranged in a manner simulating the arrangement of each manufacturing device in each manufacturing process is associated with index data T2 for each manufacturing process. Since the display data T3 outputs an icon layout T5, which is icon arrangement information, in association with the index data T2, the manager can recognize the amount of in-process inventory backlog T1 in the manufacturing process together with the arrangement of the manufacturing devices. The display data T3 may include information such as the relationship between each process and the repetition of a process.

The creation unit 3 may switch the display data T3 in chronological order and output it to the display unit 6, or may arrange the display data T3 in chronological order and output it to the display unit 6. The output of the display data T3 by the creation unit 3 will be explained using Figures 2 and 3, which are examples of display screens at different times. Figures 2 and 3 may be output and displayed on different screens over time, or Figures 2 and 3 may be arranged in chronological order and displayed on the same screen.

Specific examples of display data T3 will be described later.

(Memory unit 4)
The storage unit 4 stores the display data T3 in association with the time when the amount of inventory T1 was acquired in each manufacturing process. As shown in 102 of FIG. 1, the amount of inventory T1 acquired by the acquisition unit 1, the index data T2 acquired by the conversion unit 2, the display data T3 created by the creation unit 3, the time T4, and the icon layout T5 are recorded in the storage unit 4. Furthermore, each piece of data may be appropriately acquired from the storage unit 4 so that each unit can perform its function. For example, when the conversion unit 2 converts the amount of inventory T1 acquired by the acquisition unit 1 into the index data T2, the conversion unit 2 may acquire the amount of inventory T1 acquired by the storage unit 4, convert it into the index data T2, and record it in the storage unit 4. When the creation unit 3 creates the display data T3, the creation unit 3 may acquire the index data T2 and the icon layout T5 from the storage unit 4. When the display control unit 5 causes the display unit 6 to display the display data T3 and the time T4, the display control unit 5 may obtain the display data T3 and the time T4 from the storage unit 4 and transmit them to the display control unit 5.

The storage unit 4 is not particularly limited as long as it has the relevant function. For example, the storage unit may include one or more memories.

(Display Control Unit 5)
The display control unit 5 causes the relationship between the display data T3 and the time to be displayed on the display unit 6. The display control unit 5 may display the display data T3 stored in the storage unit 4 and the time at which the retention amount T1 was acquired on the display unit 6 in accordance with an operation by the administrator. For example, the display data T3 at the time designated by the administrator can be displayed on the display unit 6 based on the information stored in the storage unit 4.

(Display unit 6)
1 illustrates a process control device 10 that does not include a display unit 6. However, the process control device 10 of the present disclosure is not limited to this, and the process control device 10 may further include a display unit 6 that displays display data and time. The display unit 6 may be configured to have any screen. For example, it may be any display.

(Examples of icons)
The icons are intended to display the accumulation amount T1 and the increase or decrease in the accumulation amount T1 in an arbitrary form. The icon display form may be a form with excellent visibility so that the administrator can easily grasp the accumulation amount T1 and the increase or decrease in the accumulation amount T1.

For example, the display form of the icon may change the color of the icon, the shape of the icon, and the letters and numbers on the icon, and these may be changed according to the accumulation amount T1 and the increase or decrease of the accumulation amount T1. For example, the color or shape of the icon may be changed when the accumulation amount T1 exceeds a certain threshold. The display setting information of the icon at this time may be information for changing the color or shape of the icon from the normal icon color or shape when the set accumulation amount T1 threshold is exceeded. In addition, the display form may show the accumulation amount T1 and the increase or decrease of the accumulation amount T1 as letters or numbers on the icon. The letters or numbers displayed on the icon are not particularly limited as long as they are one or more characters, but may be one or more and five or less characters so that the administrator can easily grasp the information. In this way, the accumulation amount T1 or the increase or decrease of the accumulation amount T1 is reflected in the display form of the icon with excellent visibility, so that the administrator can intuitively grasp the level of the accumulation amount T1.

The icon may indicate any information related to the manufacturing process and the manufacturing equipment on the production line, for example, information on factors that may affect the retention amount T1. The icon may further indicate at least one of the following: the size of each manufacturing equipment, the operation rate of each manufacturing equipment, the length of time for performing the manufacturing process, the type of product being produced in each manufacturing process, the production speed (pieces/hour) of each manufacturing process, and the input speed (pieces/hour) of the in-process inventory to each manufacturing process. The size of each manufacturing equipment may be the vertical and horizontal width or volume of each manufacturing equipment. The length of time for performing each manufacturing process may be the estimated time for performing each manufacturing process, or the actual time required. The operation rate of each manufacturing equipment may be the ratio of the number of productions (pieces) by each manufacturing equipment per unit time to the maximum production capacity (pieces) of each manufacturing equipment per unit time. The production speed of each manufacturing process may be the number of productions (pieces) by each manufacturing process per unit time. The input speed (pieces/hour) of the in-process inventory to each manufacturing process may be the number of in-process inventory input to each manufacturing process per unit time. Hereinafter, any information on the production line other than the retention amount T1 is referred to as "additional information".

The additional information may be displayed on the icon in a manner that allows it to be identified from the retention amount T11, and may be displayed by the color and shape of the icon, as well as letters and numbers on the icon. For example, the size of the manufacturing equipment or the length of time it takes to carry out the manufacturing process may be displayed by the shape of the icon. The operating rate of each manufacturing equipment, the production speed (pieces/hour) of each manufacturing process, and the input speed of in-process inventory to each manufacturing process (pieces/hour) may also be displayed numerically, and the type of product being produced in the process may be displayed by letters. When information is displayed by letters or numbers, there is no particular limitation as long as it is a notation of one or more characters, but it may be a notation of one or more characters and five or less characters so that the administrator can easily grasp the information.

If the additional information is information that does not change while the production line is operating, such as the size of the manufacturing equipment and the variety being produced in each production process, this information may be stored in the memory unit 4 as an icon layout T5. If the additional information is data that may change while the production line is operating, such as the operating rate of each manufacturing equipment, the production speed (pieces/hour) of each production process, and the input speed (pieces/hour) of work-in-process inventory to each production process, this additional information may be further acquired by the acquisition unit 1.

With this configuration, the retention amount T1 and the additional information are displayed on the same screen of the display unit 6. The administrator can grasp the increase or decrease in retention amount T1 in association with the additional information, which helps the administrator determine the cause of the increase or decrease in retention amount T1.

The creation unit 3 may output display data T3 including index data T2 at a specified time to the display unit 6. The "specified time" refers to any time specified by the administrator. For example, in the screens shown in Figures 2 and 3, the administrator sets a time, and display data T3 for that time is output.

The display data T3 may be output to the display unit 6 in the order of acquisition time, so that the manager can check the backlog amount T1 over time from the start of the manufacturing process. With this configuration, the manager can check the fluctuation in the backlog amount T1 of work-in-progress inventory over time. The creation unit 3 displays the display data T3 on the display unit 6 via the display control unit 5.

(Specific example of display data T3)
An example of the display screen 20 showing the display data T3 on the display unit 6 will be described below with reference to FIGS. 2 to 4. In the display screen 20 in FIGS. 2 to 4, the display data T3, the time operation panel 21, and the time display panel 22 are shown. The icons are arranged to simulate the layout of each manufacturing device in each manufacturing process in the manufacturing line. The size of the icon indicates any additional information, for example, the size of the device. The time operation panel 21 displayed on the display screen 20 can display the display data T3 at the time specified by the administrator. In FIGS. 2 to 4, the time of the displayed display data T3 is changed by clicking the white circle cursor on the time operation panel 21 with the mouse pointer and sliding it left and right. The time specified by the time operation panel 21 may be displayed by the time display panel 22. 201, 301, and 401 in FIGS. 2 to 4 show the display data T3 at the time "08:00:00", and 202, 302, and 402 show the display data T3 at the time "10:00:00".

In FIG. 2, the backlog amount T11 is indicated by a change in the color of the icon. For example, if the backlog amount T11 is high, it may be colored a darker color. In this case, it is easy to see that while the backlog of in-process inventory is kept at a low level at the time "08:00:00" shown in 201, backlog of in-process inventory is occurring in processes 3 and 4 at the time "10:00:00" shown in 202.

The display screen 20 shown in FIG. 3 has an additional information panel 23. The additional information panel 23 allows the manager to select additional information such as the operating rate (%) of each manufacturing device, production speed (pieces/hour), and production items. FIG. 3 shows the display screen 20 when the operating rate of each manufacturing device is selected as an example. It can be seen that the amount of work-in-process inventory and the operating rate of each manufacturing device fluctuate between the time "08:00:00" shown at 301 in FIG. 3 and the time "10:00:00" shown at 302 in FIG. 3.

In the display screen 20 of Figure 4, the relationships between each manufacturing process are shown by colorable lines. At time "08:00:00" shown in 401 of Figure 4, the backlog of in-process inventory at each manufacturing process and between each manufacturing process is kept to a low level. On the other hand, it can be easily seen that backlogs of in-process inventory are occurring at steps 3 and 4, between steps 2 and 3, and between steps 3 and 4 at time "10:00:00" shown in 402 of Figure 4.

(Functions and Effects of the Process Management Apparatus 10)
The process management device 10 includes an acquisition unit 1 that acquires a backlog T11 of in-process inventory in each manufacturing process in a manufacturing line for a product including two or more manufacturing processes, a conversion unit 2 that converts the backlog T11 into index data T2, a creation unit that creates display data T3 in which an icon indicating each manufacturing device arranged to simulate the layout of the manufacturing devices in each manufacturing process corresponds to the index data T2 in each manufacturing process, a storage unit 4 that associates the display data T3 with the time at which the backlog T11 was acquired in each manufacturing process, and a display control unit 5 that displays the relationship between the display data T3 and the time on a display unit 6. The process management device 10 creates and displays the display data T3 in which the icon arranged to simulate the layout of the manufacturing devices that execute each manufacturing process corresponds to the index data T2 indicating the backlog T1, so that a manager can recognize the backlog T11 of in-process inventory in each manufacturing process together with the layout of the manufacturing devices. Therefore, the manager can intuitively grasp the amount of work-in-process inventory held up in the manufacturing process T11. In addition, since the amount of work-in-process inventory held up is associated with each time, the manager can also recognize how much work-in-process inventory is held up at each time.

In Figures 2 and 3, which show an example of a screen displayed on the display unit 6 by the process management device 10, icons corresponding to each process, 1 to 4, are displayed along the layout of the equipment that performs each process. In Figures 2 and 3, the amount of in-process inventory backlog T11 at each process is indicated by the darkness of the color, and it can be seen that the amount of in-process inventory backlog T11 at each process has changed depending on the time at which the amount of in-process inventory backlog T11 was acquired.

(Other features)
The process control device 10 may have any function for controlling each manufacturing process. For example, it may issue a warning when the backlog amount T1 in each manufacturing process exceeds a threshold. With this configuration, when backlog of work-in-process inventory occurs, the on-site manager can control each manufacturing process, and products can be manufactured efficiently.

[Process control method]
A process control method according to another embodiment of the present disclosure will be described below. Fig. 5 is a flow diagram showing a process control method S10 according to one aspect of the present disclosure. The process control method S10 may be performed by a process control apparatus 10.

The process management method S10 includes steps S1 to S5. The acquisition step S1 is, for example, a step in which the acquisition unit 1 acquires the amount of backlog T1 of in-process inventory. The conversion step S2 is, for example, a step in which the conversion unit 2 converts the amount of backlog T1 of in-process inventory into index data T2. The creation step S3 is, for example, a step in which the creation unit 3 creates display data T3 based on the index data T2 and the icon layout T5. The storage step S4 is, for example, a step in which the storage unit 4 associates and stores the display data T3 with the time T4 at which the amount of backlog T1 of in-process inventory was acquired. The display step S5 is, for example, a step in which the display control unit 5 outputs the relationship between the display data T3 and the time T4 at which the amount of backlog T1 of in-process inventory was acquired to the display unit 6. The process management method S10 can create display data T3 in which an icon indicating the arrangement of the manufacturing equipment is associated with the amount of backlog T1. The process management method S10 can allow the manager to recognize the amount of backlog T1 of in-process inventory in the manufacturing process together with the arrangement of the manufacturing equipment.

[Process Management Program]
A process control program according to another embodiment of the present disclosure will be described below. For convenience of explanation, the same reference numerals will be given to components having the same functions as those described in the above embodiment, and the description thereof will not be repeated.

The process management program disclosed herein is a process management program for causing a computer to function as a process management device 10, and is a process management program for causing a computer to function as an acquisition unit 1, a conversion unit 2, a creation unit 3, and a display control unit 5.
In this case, the process control device 10 includes a computer having at least one control device (e.g., a processor) and at least one storage device (e.g., a memory) as hardware for executing the process control program. The control device and storage device execute the program to realize each of the functions described in each of the above embodiments.

The above program may be recorded on one or more computer-readable recording media, rather than being temporary. That is, in one embodiment of the present disclosure, it may be a computer-readable recording medium on which a process management program is recorded. This recording medium may or may not be included in the device. In the latter case, the above program may be supplied to the device via any wired or wireless transmission medium.

In addition, some or all of the functions of each block shown in FIG. 1 can be realized by a logic circuit. For example, an integrated circuit in which a logic circuit that functions as each of the above control blocks is formed is also included in the scope of this disclosure. In addition, it is also possible to realize the functions of each of the above control blocks by, for example, a quantum computer.

The invention according to this disclosure has been described above with reference to the drawings. However, the invention according to this disclosure is not limited to the above-mentioned embodiments. In other words, the invention according to this disclosure can be modified in various ways within the scope of this disclosure, and embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the invention according to this disclosure. In other words, it should be noted that a person skilled in the art can easily make various modifications or corrections based on this disclosure. It should also be noted that these modifications or corrections are included in the scope of this disclosure.

〔summary〕
The present disclosure can also be described as follows.

The process management device according to aspect 1 of the present disclosure is a process management device that includes an acquisition unit that acquires the amount of work-in-process inventory held up in each manufacturing process in a manufacturing line for a product including two or more manufacturing processes, a conversion unit that converts the held up amount into index data, a creation unit that creates display data that associates an icon representing each manufacturing device arranged to simulate the arrangement of the manufacturing devices in each manufacturing process with the index data in each manufacturing process, a storage unit that associates and stores the display data with the time at which the held up amount was acquired in each manufacturing process, and a display control unit that causes the relationship between the display data and the time to be displayed on the display unit. With this configuration, a manager can recognize the amount of work-in-process inventory held up in the manufacturing process T1 along with the arrangement of the manufacturing devices.

The process management device according to aspect 2 of the present disclosure is the process management device of aspect 1, in which the index data is at least one of the retention volume and data indicating an increase or decrease in the retention volume.

The process management device according to aspect 3 of the present disclosure is the process management device according to aspect 1, in which the index data is display setting information for the icon for indicating at least one of the retention amount and an increase or decrease in the retention amount in the display form of the icon. By reflecting the retention amount T1 or an increase or decrease in the retention amount T1 in the display form of an icon with excellent visibility, a manager can intuitively grasp the level of the retention amount T1.

The process management device according to aspect 4 of the present disclosure is the process management device according to any one of aspects 1 to 3, in which the icon further indicates at least one of the size of the manufacturing equipment, the length of time for which the manufacturing process is performed, the operating rate of each manufacturing equipment, the type of product being produced in each manufacturing process, the production speed (pieces/hour) of each manufacturing process, and the input speed of work-in-progress inventory to each manufacturing process (pieces/hour). With this configuration, the holdup amount T1 and information on factors that may affect the holdup amount T1 are displayed on the same screen of the display unit 6. This can assist the manager in determining the factors that increase or decrease the holdup amount T1.

The process management device according to aspect 5 of the present disclosure is the process management device according to any one of aspects 1 to 4, in which the creation unit outputs the display data including the index data at a specified time to the display unit. With this configuration, the manager can check the fluctuation of the in-process inventory backlog T1 over time.

The process management device according to aspect 6 of the present disclosure is the process management device according to aspect 5, in which the creation unit switches the display data in the chronological order and outputs the display data to the display unit.

The process management device according to aspect 7 of the present disclosure is the process management device according to aspect 5, in which the creation unit arranges the display data in chronological order and outputs the display data to the display unit.

The process management device according to aspect 8 of the present disclosure is any of the process management devices according to aspects 1 to 7, in which the index data further includes data based on the amount of work-in-process inventory held between each of the manufacturing processes. This configuration makes it easy for a manager to recognize the amount of work-in-process inventory held between processes T12.

The process management device according to aspect 9 of the present disclosure is any of the process management devices according to aspects 1 to 8 that issues a warning when the backlog amount in each of the manufacturing processes exceeds a threshold. By displaying the backlog amount T12 of in-process inventory between processes as an icon, it becomes easy for a manager to recognize the backlog amount T12 of in-process inventory between processes.

The process control device according to aspect 10 of the present disclosure is any one of the process control devices according to aspects 1 to 9, which is provided with a display unit that displays the relationship between the display data and the time.

The process management method according to aspect 11 of the present disclosure is a process management method including an acquisition step of acquiring the amount of backlog of work-in-process inventory at each process in a manufacturing process of a product including two or more processes, a conversion step of converting the backlog into index data, a creation step of creating display data in which an icon representing each manufacturing device arranged to simulate the arrangement of the manufacturing devices at each manufacturing process corresponds to the index data at each manufacturing process, a storage step of storing the display data in association with the time at which the backlog amount was acquired at each manufacturing process, and a display step of displaying the relationship between the display data and the time on a display unit.

The process management program according to aspect 12 of the present disclosure is a process management program for causing a computer to function as the process management device described in aspect 1, and is a process management program for causing a computer to function as the acquisition unit, the conversion unit, the creation unit, and the display control unit.

The recording medium according to aspect 13 of the present disclosure is a computer-readable recording medium having the process management program according to aspect 12 recorded thereon.

REFERENCE SIGNS LIST 1 Acquisition unit 2 Conversion unit 3 Creation unit 4 Storage unit 5 Display control unit 6 Display unit 10 Process control device 20 Display screen 21 Time operation panel 22 Time display panel 23 Additional information panel T1 Amount of in-process inventory backlog T2 Index data T3 Display data T11 Amount of in-process inventory backlog at each manufacturing process T12 Amount of in-process inventory backlog between each manufacturing process S1 Acquisition step S2 Conversion step S3 Creation step S4 Storage step S5 Display step

Claims (13)

an acquisition unit that acquires a backlog of in-process inventory in each manufacturing process in a product manufacturing line including two or more manufacturing processes;
A conversion unit for converting the retention amount into index data;
a creation unit that creates display data in which an icon representing each of the manufacturing devices arranged in a manner simulating the arrangement of the manufacturing devices in each of the manufacturing processes is associated with the index data in each of the manufacturing processes;
a storage unit that stores the display data and a time when the retention amount was acquired in each of the manufacturing processes in association with each other;
A process control device comprising: a display control unit that causes the relationship between the display data and the time to be displayed on a display unit. The process management device according to claim 1, wherein the index data is at least one of the retention amount and data indicating an increase or decrease in the retention amount. The process management device according to claim 1, wherein the index data is display setting information for the icon for indicating at least one of the retention amount and an increase or decrease in the retention amount in the display form of the icon. The process control device according to any one of claims 1 to 3, wherein the icon further indicates at least one of the size of each of the manufacturing devices, the operating rate of each of the manufacturing devices, the length of time for performing each of the manufacturing processes, the product type being produced in each of the manufacturing processes, the production speed (pieces/hour) of each of the manufacturing processes, and the input speed (pieces/hour) of work-in-progress inventory to each of the manufacturing processes. The process management device according to any one of claims 1 to 3, wherein the creation unit outputs the display data including the index data at a specified time to the display unit. The process management device according to claim 5, wherein the creation unit switches the display data in the chronological order and outputs the data to the display unit. The process management device according to claim 5, wherein the creation unit arranges the display data in chronological order and outputs the display data to the display unit. The process management device according to any one of claims 1 to 3, wherein the index data further includes data based on the amount of in-process inventory held between each of the manufacturing processes. The process management device according to any one of claims 1 to 3, which issues a warning when the amount of retention in each of the manufacturing processes exceeds a threshold value. The process control device according to any one of claims 1 to 3, further comprising a display unit that displays the relationship between the display data and the time. An acquisition step of acquiring a backlog of work-in-progress inventory in each manufacturing process in a manufacturing process of a product including two or more processes;
A conversion step of converting the retention amount into index data;
a creating step of creating display data in which an icon representing each of the manufacturing devices arranged in a manner simulating the arrangement of the manufacturing devices in each of the manufacturing processes is associated with the index data in each of the manufacturing processes;
a storage step of storing the display data and a time when the retention amount was acquired in each of the manufacturing processes in association with each other;
and a display step of displaying the relationship between the display data and the time on a display unit. A process management program for causing a computer to function as the process management device according to any one of claims 1 to 3, the process management program causing a computer to function as the acquisition unit, the conversion unit, the creation unit, and the display control unit. A computer-readable recording medium having the process management program according to claim 12 recorded thereon.

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