JP2022072479A - Management device and calculation method - Google Patents

Abstract

To provide a management device capable of easily determining an appropriate timing for maintenance without complicated work.SOLUTION: A management device 8 capable of communicating with a counting device 1 for counting a number of opening/closing of a mold 3 is provided with a memory and a processor. The processor outputs one or more index values that can be used for determining the next maintenance time by using a first value being a counted value acquired from the counting device and one or more second values being a counted value at the time of the previous maintenance stored in the memory.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a management device and a calculation method.

In molding using a mold, maintenance of the mold is performed before a defect occurs in order to prevent the occurrence of defects in the molded product. Therefore, it is necessary to perform maintenance at an appropriate timing.

Jitsukaihei 7-2018 Gazette

However, conventionally, the maintenance time has been determined by manually calculating the number of shots (number of times of use) for each mold. Therefore, the management was very complicated. In addition, the mold may be removed from the molding apparatus, or the mold may be replaced by a molded product, which may make the management more complicated or erroneous. Therefore, there is a demand for a management device that can easily determine the appropriate timing for maintenance without complicated work.

According to one embodiment, the management device is a management device capable of communicating with a counting device that obtains a counting value of the number of shots of a mold, and includes a memory and a processor, and the processor is acquired from the counting device. At the time of the next maintenance, the first value which is the count value and one or more second values which are stored in the memory and are the reference values used for determining the next maintenance time are used. It is configured to execute a calculation process for calculating one or more index values that can be used for the determination of.

According to another embodiment, the calculation method is a calculation method in a management device capable of communicating with a counting device for obtaining the counting value of the number of shots of the mold, and is a first value which is a counting value obtained from the counting device. And one or more second values stored in the memory, which are reference values used to determine the next maintenance time, can be used for the judgment at the next maintenance time. Includes calculating one or more index values.

Further details will be described in the embodiments described below.

FIG. 1 is a diagram showing a configuration of a management system and a flow of management operations in the management system. FIG. 2 is a schematic side view of a counting device included in the management system. FIG. 3 is a schematic view showing an example of a state in which the counting device is attached to the mold. FIG. 4 is a diagram showing an example of a display screen of the counting device. FIG. 5 is a schematic configuration diagram of a management device included in the management system. FIG. 6 is a schematic diagram showing an example of the transition of the display screen in the user terminal included in the management system. FIG. 7 is a schematic diagram for explaining a flow of an operation of capturing an image of a display screen of a counting device using a user terminal and transmitting image data to the management device. FIG. 8 is a flowchart showing an example of the processing flow in the management device. FIG. 9 is a schematic diagram for explaining an operation of associating and storing data from a counting device and data from a user terminal in a management device. FIG. 10 is a schematic view showing an example of a display screen displayed on the user terminal by the management device. FIG. 11 is a schematic view showing an example of a display screen displayed on the user terminal by the management device. FIG. 12 is a schematic view showing an example of a display screen displayed on the user terminal by the management device.

<1. Overview of management device and calculation method>

(1) The management device is a management device capable of communicating with a counting device for obtaining a counting value of the number of shots of a mold, and includes a memory and a processor, and the processor is a counting value acquired from the counting device. The first value and one or more second values stored in the memory, which are reference values used for determining the next maintenance time, are used for the judgment at the next maintenance time. It is configured to perform a calculation process that calculates one or more possible index values.

The dies are set in molding dies and processing machines, and are injection dies, extrusion dies, blow dies, compression dies, press dies, forging dies, casting dies, and , At least one of the unannounced dies. In the case of an injection molding machine, the mold is composed of a plurality of molds, and each time molding is performed, a state in which the molds are in contact with each other and a state in which the molds are not in contact with each other are repeated. That is, a series of operations from the contacted state to the non-contacted state and then to the contacted state are repeated as one cycle.

When the mold is an injection-molded mold, the mold has a first mold and a second mold that are relatively moved and opened and closed. When the first mold and the second mold are in the closed state, a molding material such as resin is injected into the space formed between the first mold and the second mold, and then the first mold and the mold are formed. The second mold is opened and taken out. Injecting a molding material into the above space is called a shot. The first mold and the second mold are opened to the closed state to inject the molding material, and then the mold is opened to take out the product. Therefore, the number of shots of the mold corresponds to the number of operation cycles from the open state to the closed state and then to the open state.

By calculating the index value using the count value of the number of shots and outputting it, it is possible to easily determine the timing suitable for the next maintenance.

(2) Preferably, the index value includes the number of shots that can be taken by the next maintenance. By outputting this index value, it is possible to know how many shots the next maintenance will be reached, and it is possible to easily determine the timing suitable for the next maintenance.

(3) Preferably, the index value includes the number of shots from the time of the immediately preceding maintenance. By outputting this index value, if you know the number of shots that can be taken from the time of the previous maintenance to the time of the next maintenance, you can know how many shots will reach the next maintenance, and the timing suitable for the next maintenance. Can be easily determined.

The second value of one or more is, for example, at least one of the total number of shots at the time of the previous maintenance, the total number of shots at the time of the next maintenance, and the number of shots possible from the previous maintenance to the next maintenance. including. Specifically, when the index value includes the number of shots that can be taken by the next maintenance, the total number of shots at the next maintenance may be used as the second value, or the total number at the time of the immediately preceding maintenance. The number of shots and the number of shots that can be used from the previous maintenance to the next maintenance may be used. When the index value includes the number of shots from the previous maintenance, the total number of shots from the previous maintenance is used as the second value. The "total number of shots" refers to the counting value of the counting device at that time, and represents the cumulative value of the number of shots counted from the start of counting.

(4) Preferably, the processor outputs the parameters obtained from the count values of the first period and the second period in a time series in which the starting points of the first period and the second period are matched. It is configured to perform further processing. The first period is the period from the time of the immediately preceding maintenance. The second period is a second period from the time of the first maintenance before the immediately preceding maintenance to the time of the second maintenance following the first maintenance. The parameters obtained from the count value include at least one of the count value and the cycle time. Outputting in chronological order refers to outputting along with the passage of time, and includes arranging the count values in order from the time of maintenance. This makes it possible to compare the time change of the parameter obtained from the count value between the first period and the second period. This makes it possible to easily determine the timing suitable for the next maintenance by further using the comparison with the time change of the past index value.

(5) Preferably, the processor further executes a determination process for determining the next maintenance time based on the parameter obtained from the count value in the first period and the parameter obtained from the count value in the second period. It is configured. The determination at the time of the next maintenance includes, for example, at least one of advancing the scheduled maintenance timing and delaying the scheduled maintenance timing. As a result, the next maintenance can be performed at an appropriate timing.

(6) The calculation method included in the present embodiment is a calculation method in a management device capable of communicating with a counting device for obtaining a counting value of the number of shots of a mold, and is a counting value obtained from the counting device. And one or more second values stored in the memory, which are reference values used to determine the next maintenance time, can be used for the judgment at the next maintenance time. Includes calculating one or more possible index values. By outputting the index value, it is possible to easily determine the timing suitable for the next maintenance.

<2. Example of management device and calculation method>

With reference to FIG. 1, the management system 100 according to the present embodiment includes a counting device 1. The counting device 1 is attached to the mold 3 and counts the number of times the mold 3 is opened and closed in the molding using the mold 3. As will be described later, the counting device 1 has a display 11 that displays a display screen including a counting value of the number of times of opening and closing of the mold 3.

Further, the management system 100 further includes a management device 8. The counting device 1 can communicate with the management device 8 via a communication network 7 such as the Internet. The counting device 1 transmits data D1 including the count value of the number of times of opening and closing of the mold 3 to the management device 8.

The management system 100 further includes a user terminal 9. The user terminal 9 has a camera 92 as an image pickup device, and captures a display screen displayed on the display 11 of the counting device 1 by the camera 92 as described later. The user terminal 9 can communicate with the management device 8 via the communication network 7. The user terminal 9 transmits data D2 including image data obtained by imaging to the management device 8.

The management system 100 may include other devices (not shown), and the management device 8 may be able to communicate with these devices via the communication network 7. It is assumed that the other device is, for example, a personal computer, and is installed at a molding site, a department that manages molding, or is installed at another remote location. This makes it possible to manage not only the molding site using the mold 3 but also remotely.

Preferably, the mold 3 is provided with the identification information display 311, and the display 311 is also imaged by the camera 92 of the user terminal 9. In this case, the data D2 also includes the image data of the display 311. In addition, instead of the image data, the identification information itself of the mold 3 may be included. Further, when the mold 3 is associated with the counting device 1 in advance, the mold 3 may be identified by the identification information of the counting device 1 instead of the identification information of the mold 3.

The mold 3 is set in a molding machine 6 or a processing machine, and is an injection molding die, an extrusion die, a blow molding die, a compression molding die, a press die, a forging die, and a casting die. At least one of a mold and a punching die. The mold is composed of, for example, a pair of molds, and each time the molds are formed, the paired molds are repeatedly in contact with each other and in a non-contact state. That is, a series of operations from the contacted state to the non-contacted state and then to the contacted state are repeated as one cycle.

In the following description, the mold 3 will be an injection molding mold. The mold 3 used for injection molding has a first mold 4 and a second mold 5 that are relatively moved and opened and closed. Here, the first mold 4 and the second mold 5 refer to a mold in which one is relatively moved to open and close, and the other refers to a fixed mold. The fixed mold does not necessarily have to be a mold. The first mold 4 and the second mold 5 are referred to by using a fixed mold as a mold for convenience.

The molding machine 6 for injection molding is, for example, a cavity (cavity portion) formed by a fixed mold (for example, the first mold 4) and a movable mold (for example, the second mold 5) of the mold 3. In addition, a synthetic resin as a molding material melted by a cylinder or the like is injected from a nozzle or the like and filled, and the molded product is sequentially molded. Specifically, when the first mold 4 and the second mold 5 are in the closed state, a molding material such as resin is injected into the space formed between the first mold 4 and the second mold 5. After that, the first mold 4 and the second mold 5 are opened and taken out. Injecting a molding material into the above space is called a shot.

The number of shots of the mold 3 refers to the number of times the molding material is injected into the space, and in injection molding, one opening and closing of the first mold 4 and the second mold 5 corresponds to one shot. That is, when the mold 3 is an injection molding mold, the number of shots is the number of times the mold 3 is opened and closed.

With reference to FIG. 2, the counting device 1 has a detection unit 14 that counts the number of times the mold 3 is opened and closed. As an example, the detection unit 14 counts the number of times of opening and closing by optically detecting a change in distance. In that case, the detection unit 14 includes an emission unit 15 that emits laser light and a light receiving unit 16 that receives laser light.

With reference to FIGS. 2 and 3, the counting device 1 is mounted on the side surface 4a of one of the molds 3 (for example, the first mold 4), and the detection direction of the detection unit 14 is the other mold (for example, the mold 4). It is attached so as to face the second mold 5). Specifically, a target surface 5a is provided in or around the second mold 5, and the emitting portion 15 irradiates the target surface 5a with the laser beam B1 so that the target surface 5a is irradiated with the irradiation light. .. The irradiated laser light B1 is reflected by the target surface 5a, and the light receiving unit 16 receives the reflected light B2 from the target surface 5a.

The target surface 5a is a surface in which the distance to the first mold 4 changes when the first mold 4 and the second mold 5 move relatively to open and close, and as an example, FIG. 3 As shown in the above, it is a surface of the second mold 5 facing the first mold 4. The target surface 5a is not limited to the surface of the second mold 5 facing the first mold 4, and is within the detection range of the arbitrary detection unit 14 of the mold 3 and its peripheral members with which the detection unit 14 faces. It may be a face.

Preferably, the counting device 1 further has a sensor 18. The sensor 18 is a measured value obtained in relation to the mold 3, and as an example, detects an environmental value around the mold 3. For example, a sensor that detects the surface temperature of the mold and the ambient humidity is applicable.

The counting device 1 further includes a processor 20 and a memory 21. The detection signal from the detection unit 14 and the sensor 18 is input to the processor 20. Further, the counting device 1 has a display 11 and displays a display screen according to the control of the processor 20.

The memory 21 may be a primary storage device or a secondary storage device. The memory 21 stores a program executed by the processor 20.

The processor 20 reads and executes the program stored in the memory 21, counts the number of times the mold 3 is opened and closed using the detection signal from the detection unit 14, and stores the counted value in the memory 21.

The processor 20 further measures the cycle time of the mold 3 using the detection signal from the detection unit 14, and stores it in the memory 21. The cycle time is an interval between open / close operations, and if the start of the open / close operation is set as the measurement timing, the cycle time is from the start of the first open / close operation to the start of the second open / close operation following the first open / close operation. It's time. The processor 20 measures the cycle time each time it detects opening / closing.

The processor 20 reads out the program stored in the memory 21 and executes it, so that the display 11 displays a display screen including the counting information. As an example, the display screen 110 shown in FIG. 4 is displayed on the display 11. The counting information includes those shown on the display 111 to 115 of the display screen 110.

Specifically, the display screen 110 displays the count value, that is, the display 111 of the number of times the mold 3 is opened and closed, the cycle time display 112, the mold surface temperature display 113, the ambient humidity display 114, and the date and time display. Includes 115 and.

The counting value represented by the display 111 is, for example, the total number of shots since the counting device 1 starts counting the opening and closing in the molding using the mold 3. The total number of shots refers to the cumulative value of the number of shots from the initial state of the counting device 1 (for example, when the counting device 1 is attached to the mold). Here, it is assumed that the number of shots is continuously accumulated without being reset every time the mold 3 is maintained. In this case, the display 111 displays the latest count value stored in the memory 21 by the processor 20.

The display 112 displays the latest cycle time stored in the memory 21. The displays 113 and 114 indicate the mold surface temperature and the ambient humidity read from the sensor signal obtained from the sensor 18. The display 115 displays the current date and time obtained according to the calendar function of the processor 20.

The counting device 1 further has a communication device 17 and can communicate with the management device 8 via the communication network 7. The communication between the communication device 17 and the management device 8 may be wired or wireless.

The processor 20 causes the communication device 17 to transmit the data D1 including the count value to the management device 8 by reading and executing the program stored in the memory 21. The data D1 further includes cycle time, mold surface temperature, ambient humidity, date and time, etc. in relation to the count value. Preferably, the data D1 further includes identification information of the counting device 1.

The data D1 is transmitted at a predetermined timing. The predetermined timing is, for example, at least one at a fixed interval, a timing at which a user operation instructing transmission is received by an operation unit (not shown), and each time an opening / closing is detected.

When the data D1 is transmitted each time the opening / closing of the mold 3 is detected, the data D1 is the count value and cycle time of the detected opening / closing of the mold 3, the mold surface temperature at the detected timing, and the like. including.

When the data D1 is transmitted at predetermined intervals during which the opening / closing of the mold 3 is detected multiple times, the data D1 is based on the count value, the cycle time, and the detected timing for each of the plurality of detected opening / closing operations. Includes combinations such as mold surface temperature.

Since the transmission timing of the data D1 may be any, in the following description, the data group including the count value and cycle time for one opening / closing operation and the mold surface temperature at the detected timing will be used. Also called count data. In other words, the data D1 transmitted from the counting device 1 contains one or more counting data.

The user terminal 9 is assumed to be a tablet terminal, a smartphone, a personal computer, or the like, and has a processor 90 and a memory 91. The memory 91 stores a program executed by the processor 90. This program is an application for managing the mold 3 using the user terminal 9. The user terminal 9 further has a communication device 93, and can communicate with the management device 8 via the communication network 7.

The user terminal 9 has a camera 92, and an image is taken by the processor 90 performing control according to a user operation. The camera 92 may perform imaging under the control of the processor 90. That is, even if the user operation is not performed, the image may be automatically captured at a predetermined timing such as a fixed interval. According to the execution of the above application, the processor 90 causes the communication device 93 to transmit the data D2 including the image data obtained by the image pickup of the camera 92 to the management device 8 via the communication network 7.

With reference to FIG. 5, the management device 8 is composed of one computer having a processor 81 and a memory 82. The management device 8 may be configured by a plurality of computers in cooperation with each other. The memory 82 may be a primary storage device or a secondary storage device. The management device 8 further has a communication device 83, and can communicate with the counting device 1 and the user terminal 9 via the communication network 7.

The memory 82 stores the program 821 executed by the processor 81. The processor 81 executes arithmetic processing for management operation by executing the program 821.

The memory 82 further includes a counting information DB (database) 822 for storing counting information. The counting information is information including the counting value in the counting device 1, and includes the counting value associated with other information according to the result of the accumulation process 813 by the processor 81 described later.

The memory 82 further has a screen template table 823 that defines a screen template. The screen template is information indicating the layout of a display screen of a device used for molding such as a counting device 1 and peripheral devices. Specifically, it is information indicating what kind of information is displayed at which position. The screen template table 823 defines a screen template for each device. As a result, information necessary for processing by the processor 81 can be obtained from the display screens of the counting device 1 and peripheral devices.

The arithmetic processing executed by the processor 81 includes the reading processing 811. The reading process 811 includes a process of character-recognizing the image data included in the data D2 received by the communication device 83 and reading the character information. Character recognition is, for example, optical character recognition (OCR).

The arithmetic processing executed by the processor 81 includes the storage processing 813. The storage process 813 is a process for accumulating the count value in the counting device 1 obtained by the reading process 811 from the data D2 in the counting information DB 822 using the data D1 transmitted from the counting device 1.

The arithmetic processing executed by the processor 81 includes the calculation processing 812. The calculation process 812 is an example of a process using the data accumulated in the counting information DB 822, and is a process for calculating an index value. The index value refers to a value that can be used to determine the timing of the next maintenance. In order to perform the calculation process 812, one or a plurality of reference values are stored in the memory 82.

The index value is, for example, the number of times of molding using the mold 3 possible by the next maintenance, that is, the number of times of opening and closing of the mold 3 (hereinafter, the number of remaining opening and closing). The number of remaining openings and closings is also referred to as the number of remaining shots. In this case, the reference values are, for example, the number of times the mold 3 is opened and closed (total number of shots) during the previous (immediately before) maintenance, and the number of times the mold 3 can be opened and closed from the immediately preceding maintenance to the next maintenance (the number of times the mold 3 is opened and closed (total number of shots). Hereinafter, the first reference number of times; the first reference number of shots). The first reference number of times is set in advance, for example. The first reference number of times can be changed by the user. The first reference number of times is set to a value of, for example, about 5000. The number of times of opening and closing (total number of shots) at the time of the previous maintenance of the mold 3 is stored as a counting value in the counting information DB 822. The first reference number of times is stored in the memory 82 as a reference value.

The processor 81 reads out the count value (total number of shots at the time of the previous maintenance) at the time of the previous maintenance of the mold 3 from the count information DB 822 in the calculation process 812. Then, the read count value is subtracted from the count value included in the count data of the data D1, that is, the latest count value (latest total number of shots). The obtained value is the number of times the mold 3 is opened and closed since the previous maintenance.

Further, the processor 81 reads the first reference number of times from the memory 82, and obtains the remaining opening / closing number (remaining shot number) as an index value by subtracting the opening / closing number of times from the previous maintenance from the first reference number of times. By displaying this index value, the user can know the number of remaining openings and closings of the mold 3 that can be performed by the next maintenance.

The remaining open / closed number may be calculated by another calculation method. For example, as a reference value, it may be calculated using the number of times the mold 3 is opened and closed at the time of the next maintenance (hereinafter, the second reference number; the second reference shot number). The second reference number of times is stored in the memory 82 as a reference value.

The processor 81 reads the second reference number of times from the memory 82, and subtracts the count value included in the count data of the data D1, that is, the latest count value (latest number of shots) from the second reference number of times. Get the value. By obtaining this index value, the number of remaining openings and closings of the mold 3 until the next maintenance can be known.

As another example, the index value may be the number of times of opening and closing since the previous maintenance. In this case, the reference value is the number of times the mold 3 is opened and closed at the time of the previous maintenance. The processor 81 reads the count value at the time of the previous maintenance of the mold 3 from the count information DB 822, and subtracts it from the count value included in the count data of the data D1, that is, the latest count value (total number of shots). Get the value. By obtaining this index value, the number of remaining openings and closings can be known if the first reference number of times is known in advance. The first reference count may be displayed on the screen.

The arithmetic processing executed by the processor 81 includes an output processing 814. The output process 814 is an example of a process using the data stored in the count information DB 822, and includes a process of outputting a display screen based on the count value so as to be displayed on another device such as a user terminal 9. If the management device 8 has a display, the output process 814 may include displaying on its own display. As a result, the display screen based on the counted value can be viewed even remotely from the molding site using the mold 3, and the control can be performed remotely.

Preferably, the output process 814 includes a process of calculating the cycle time average value. The cycle time average value is obtained by dividing the total time measured in the multiple opening / closing operations of the mold 3 by the number of opening / closing times. In the output process 814, the cycle time average value may be output.

Preferably, the arithmetic processing executed by the processor 81 includes the determination processing 816. The determination process 816 is an example of the process using the data stored in the counting information DB 822, and is the first reference number or the second reference number stored in the memory 82 (representing these, the reference number and the reference number). This is a process for determining the suitability of (referred to only). The suitability of the reference number of times may be determined by either determining that the reference number of times is too large or determining that the reference number of times is too small. That is, it includes at least one of determining that the next maintenance schedule is too early and determining that it is too late. Further, the determination process 816 may include an appropriate reference number of times, that is, a prediction process 817 for predicting an appropriate next maintenance time when it is determined that the reference number of times is not appropriate.

The management method of the mold 3 in the management system 100 will be described. With reference to FIG. 1, the counting device 1 attached to the mold 3 set in the molding machine 6 counts the number of times the mold 3 is opened and closed. Preferably, the counting device 1 counts each time the opening / closing of the mold 3 is detected, and also detects the measured value such as the mold surface temperature. Then, the display screen of the display 11 is updated. The display screen of the display 11 of the counting device 1 is, for example, the display screen 110 of FIG.

Further, the counting device 1 transmits data D1 including one or a plurality of counting data obtained at the timing when one opening / closing is detected to the management device 8 at a predetermined timing (step S1).

As an example, the user terminal 9 is carried by the user of the molding machine 6. When the user manages the mold 3 using the user terminal 9, an application for managing the mold 3 is started.

The input screen 900 of FIG. 6 is an example of a screen for inputting information, which is displayed on the display 94 when the application is started. The input screen 900 includes, as user information, an input field 901 for identification information of the operator of the molding machine 6, an input field 902 for identification information of the mold 3 to be managed, and a button 903 for instructing image pickup by the camera 92. including. Further, the input screen 900 may include a button 904 for instructing the display of the screen including the counting result described later.

When the application is started, a login screen (not shown) may be displayed on the display 94. In that case, the input of user information can be accepted on the login screen.

Further, the identification information of the mold 3 may be obtained by imaging the display 311 provided on the mold 3 at the time of imaging described later, instead of inputting to the input field 902.

The user information may include information that identifies the type of user. As the types of users in molding using the mold 3, a plurality of types such as an operator, a manager, and a manager can be considered. The input screen 900 accepts at least one input of the user identification information and the user type identification information.

The application may have different operation privileges depending on the type of user. For example, when the type of the input user is an operator, the application may hide or highlight the button 904 so as not to instruct the display of the screen including the counting result. As a result, management authority can be set according to the type of user, and flexible management is realized.

When molding using the mold 3, the user operates the button 903 on the input screen 900 of the user terminal 9 with the display 11 of the counting device 1 as the imaging range of the camera 92. As a result, the camera 92 captures the display screen of the display 11 of the counting device 1 (step S2).

By obtaining the image data captured by the camera 92, the input screen 900 displayed on the display 94 is switched to the display screen 910 according to the execution of the application. The display screen 910 is an example of an input screen for inputting an event at the time of opening and closing of the mold 3 displayed on the display screen included in the image data.

An event is an event that occurs in a work process using a mold. The mold-based work process includes mold-based molding, processing, and any other mold-based work. Events that occur in molding using a mold include, for example, an event that occurs when a product is molded in a normal process using a mold 3 (hereinafter, normal mass production), an event that occurs during maintenance, an event that occurs when dealing with a problem, and the like. including.

As an example of the events that occur in order during normal mass production, the start of the preparatory process (hereinafter referred to as “throw away”) such as throwing away and trial hitting prior to the start of normal mass production (“1” in FIG. 6) and the start of normal mass production (Fig. 6). In No. 6, “2”) and the end of normal mass production (“3” in FIG. 6) can be mentioned. The display screen 910 includes buttons 911A, 911B, and 911C representing each.

Events during maintenance and troubleshooting occur in this order, starting and ending. The display screen 910 includes buttons 912A and 912B indicating the start and end of troubleshooting, and buttons 913A and 913B indicating the start and end of maintenance, respectively. The display screen 910 may include buttons representing other events. The display screen 910 may also include a button 914 for instructing the display of the screen including the counting result described later, similarly to the input screen 900.

The display screen 910 accepts user operations for these buttons 911A to 913B. By this user operation, an event at the time of opening and closing of the mold 3 displayed on the display screen included in the image data obtained by the image pickup of the camera 92 is specified.

Upon receiving the user operation specifying the event, the user terminal 9 transmits the data D2 including the image data obtained in step S2 and the signal indicating the user operation on the display screen 910 to the management device 8 according to the execution of the application. (Step S3).

For details, refer to FIG. 7, and in the case of normal mass production of molding using the mold 3 in the molding machine 6, after the power of the molding machine 6 is turned on, discarding is performed in the period A1 from the time t1 to the time t2. , It is assumed that mass production is normally performed in the period A2 from the time t2 to the time t3.

At this time, after the power of the molding machine 6 is turned on, the user uses the user terminal 9 to image the screen 121 displayed on the counting device 1 at time t1, and then operates the button 911A on the screen 910 to specify an event. do. As a result, the data D2 is transmitted to the management device 8 in step S3.

Next, at time t2, which is usually the start of mass production, the user uses the user terminal 9 to image the screen 122 displayed on the counting device 1, and then operates the button 911 B on the screen 910 to specify an event. do. As a result, the data D2 is transmitted to the management device 8 in step S3.

Next, at time t3, which is the end of normal mass production, the user uses the user terminal 9 to image the screen 123 displayed on the counting device 1, and then operates the button 911C on the screen 910 to specify an event. do. As a result, the data D2 is transmitted to the management device 8 in step S3.

As shown in FIG. 7, the data D2 includes data 201 indicating the identification information of the user terminal 9, data 202 indicating the identification information of the mold 3, data 203 indicating the event, and image data 204. Further, the data D2 further includes data 205 indicating user identification information input on the input screen 900.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 911A acquires the count value C1 (2040) from the image data 204 of the screen 121 at time t1 included in the data D2. do. Also, the time T1 (8:15) is acquired.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 911B acquires the count value C2 (2045) from the image data 204 of the screen 122 at time t2 included in the data D2. do. Also, the time T2 (8:20) is acquired.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 911C acquires the count value C3 (3094) from the image data 204 of the screen 123 at time t3 included in the data D2. do. Also, the time T3 (16:10) is acquired.

The processor 81 of the management device 8 that has acquired the data D2 obtains the count value C1 and the time T1 from the image data on the screen 121, the count value C2 and the time T2 from the image data on the screen 122, and the count value from the image data on the screen 123. Get C3 and time T3. The processor 81 calculates the net production number PN, the net production time PT, and the average cycle time AT, respectively, by the following equations (1) to (3). The net production number refers to the number of shots in the period from the start to the end of normal mass production, and the net production time refers to the length of the period from the start to the end of normal mass production.
PN1 = C3-C2 = 3094-2045 = 1049 ... Equation (1)
PT1 = T3-T2 = (16:10)-(8:20) = 7h50m ... Equation (2)
AT = (T3-T2) / (C3-C2)
= 7h50m / 1049 = 26.88s ... Equation (3)

The same applies when the event is a troubleshooting. That is, the user captures the screen displayed on the counting device 1 at the start of troubleshooting, and then operates the button 912A on the screen 910 to specify an event. As a result, the data D2 is transmitted to the management device 8 in step S3.

Next, the user captures an image of the screen displayed on the counting device 1 at the end of troubleshooting, and then operates the button 912B on the screen 910 to specify an event. As a result, the data D2 is transmitted to the management device 8 in step S3.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 912A acquires the count value C4 (for example, 4045) from the image data 204 included in the data D2. Also, the time T4 (for example, 14:35) is acquired.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 912B acquires the count value C5 (for example, 4064) from the image data 204 included in the data D2. Also, the time T5 (for example, 14:52) is acquired.

The processor 81 calculates the net stop time PN2 and the trouble response time PT2 by the following equations (4) and (5), respectively. The net downtime refers to the number of shots during the period from the start to the end of troubleshooting.
PN2 = C5-C4 = 4064-4045 = 19 ... Equation (4)
PT2 = T5-T4 = (14:52)-(14:35) = 17m ... Equation (5)

The same is true if the event is maintenance. That is, the user captures the screen displayed on the counting device 1 at the start of maintenance, and then operates the button 913A on the screen 910 to specify an event. As a result, the data D2 is transmitted to the management device 8 in step S3.

Next, the user captures the screen displayed on the counting device 1 at the end of maintenance, and then operates the button 913B on the screen 910 to specify an event. As a result, the data D2 is transmitted to the management device 8 in step S3.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 913A acquires the count value C6 (for example, 5090) from the image data 204 included in the data D2. Also, the time T6 (for example, 09/02 09:30) is acquired.

The processor 81 of the management device 8 that has acquired the data D2 including the data 203 indicating the event represented by the button 913B acquires the count value C7 (for example, 5090) from the image data 204 included in the data D2. Also, the time T7 (for example, 09/05 11:45) is acquired.

Since counting is not performed by the counting device 1 at the time of maintenance, the display screen may not include the display of the counting value. Alternatively, if the data 203 is data indicating an event represented by the button 913A or the button 913B, the processor 81 does not have to read the count value.

The processor 81 calculates the maintenance time PT3 by the following equation (6).
PT3 = T7-T6 = (09/05 11:45)-(09/02 09:30)
= 3d2h15m ... Equation (6)

The management device 8 that has acquired the data D1 and the data D2 temporarily stores the respective data in the memory 82. Further, the values obtained from the data D1 by each of the above equations (1) to (6) are also stored in the memory 82 as the values for display. Then, the management device 8 performs a management operation using these data (step S4). The management operation in step S4 includes a reading process 811 for the image data 204 included in the data D2.

When the display screen shown in the image data 204 is the display screen 110 of FIG. 4, the processor 81 in the reading process 811 starts with the count value from the portion of the display 111, the cycle time from the position of the display 112, and the mold from the position of the display 113. Obtain text indicating the surface temperature, ambient humidity from the position of display 114, and date and time from the position of display 115. The acquired text is temporarily stored in the memory 82 as read data.

Preferably, when the data D2 includes the identification information of the counting device 1, the processor 81 selects the screen template corresponding to the counting device 1 from the screen template table 823 in the reading process 811 and acquires it from the position specified in the screen template. The text is acquired as information associated with the position in the screen template. As a result, even when there are a plurality of types of counting devices, the management device 8 can obtain necessary information from the data D2 as text data.

In step S4, the processor 81 of the management device 8 executes the process shown in the flowchart of FIG. With reference to FIG. 8, at the start of the process, the processor 81 reads the count data and the read data from the memory 82 (step S101).

The processor 81 associates the read count data with the read data, and stores the associated data in the count information DB 822 (steps S103 and S105). The association includes associating the corresponding count data with data indicating the event specified in the data D2. Associating is an addition as an example.

Specifically, the processor 81 extracts the count data having the same count value included in the data D2 from the read count data (YES in step S103). The count value is an example of information that guarantees the synchronization of data, and time information may be used as another example. When the counting value is used, the processing becomes easier because the synchronization between the counting device 1 and the user terminal 9 becomes unnecessary.

With reference to FIG. 9, it is assumed that the count data D11 to D18 are read from the memory 82. An example will be described in which the read data of the data D2 obtained at each of the times t1, t2, and t3 in FIG. 7 is associated with the count data D11 to D18 and stored in the count information DB 822.

In this case, the count values C1, C2, and C3 of each read data are used to extract the count data D11, D14, and D18 that match the count values C1, C2, and C3 from the count data D11 to D18, respectively. Then, data representing an event included in each read data is added to the count data D11, D14, and D18 (FIG. 9).

By associating the count data with the event in this way, it becomes possible to discriminate the event that occurred during the work process using the mold when the count data was obtained.

The association is at least one of associating the event with the count data and associating the identification information of the mold 3. By associating the identification information of the mold 3, it becomes easy to manage each of the plurality of molds 3.

Further, the association may be further associated with the user's identification information. This facilitates management for each user. The management for each user includes, for example, at least one of grasping the start and end of work for each operator and grasping the work time. Further, it may include calculating the productivity for each combination of molding using the mold 3 and the operator. This makes it possible to use the data for production planning, staffing planning, evaluation, and so on.

The processor 81 executes a calculation process for calculating an index value as an example of a process using the data stored in the count information DB 822 (step S106). In step S106, for example, the remaining open / closed number is calculated using the count value at the time of the previous maintenance, the latest count value, and the reference number of times stored in the count information DB822.

The processor 81 executes a display process for displaying the screen including the count result as an example of the process using the data stored in the count information DB 822 (step S107). As an example, step S107 may be performed by operating the buttons 904 and 914 on the input screen 900 of the user terminal 9 and the display screen 910 for designating an event.

The display in step S107 is a display 94 of the user terminal 9, another display device (not shown), or the like. This makes it possible to check the molding status remotely from the molding site using the mold 3. Further, when the real-time display is performed in step S107, it can be confirmed remotely in real time. Furthermore, by displaying it remotely, it is possible to centrally manage molding at a plurality of locations.

In step S107, the processor 81 reads the latest count data from the count information DB 822, and displays the display screen 920 of FIG. 10 on the display 94 of the user terminal 9 using the count data. For details, with reference to FIG. 10, the display screen 920 has a cycle time display 923, a mold surface temperature display 924, an ambient humidity display 925, and a counting device as information obtained from the counting data. Including 926, which is the cumulative number of times of opening and closing of the mold 3 counted in 1.

Further, the display screen 920 includes a display of the identification information of the mold to be managed 921 and a display of the identification information of the user 922 as a display using the data D2 in association with the count data. By displaying these together with the count value, the mold 3 to be managed can be easily grasped. In addition, the operator performing molding can be easily grasped.

Further, the display screen 920 has a display of the number of open / closed times from the previous maintenance 927, a display of the number of remaining open / closed 928, and a display 929 at the time of the previous maintenance, as a display using the count data in association with the data D2. Including 931 of the number of times of opening and closing at the time of the previous maintenance. In the example of FIG. 10, "4200" included in the display 927 is a display of the number of times of opening and closing from the previous maintenance, and "5000" is a display of the first reference number of times. By displaying these, it is possible to easily determine the timing suitable for the next maintenance.

In the example of FIG. 10, "4200" included in the display 927 and "800" included in the display 928 are both index values X1 calculated by the processor 81 executing the calculation process 812. It is X2.

The specific calculation method of the index value X1 is as follows. That is, the following value V1 is read from the counting information DB 822. Further, the lower reference value V2A stored in the memory 82 is read out.
Current total number of shots V1 = 34800
Total number of shots at the time of the previous maintenance V2A = 30600

The index value X1 is obtained by the following formula using these values V1 and V2A.
Index value X1 = V1-V2A = 34800-30600 = 4200

The specific calculation method of the index value X2 is as follows. That is, the processor 81 calculates the index value X1 and then reads the following reference value V2C stored in the memory 82.
Number of shots possible from the previous maintenance to the next maintenance (first reference shot number) V2C = 5000

The index value X2 is obtained by the following formula using these reference values V2C and the index value X1.
Index value X2 = V2C- (V1-V2A)
= V2C-X1 = 5000-4200 = 800

Other specific examples of the calculation method of the index value X2 are as follows. That is, the processor 81 reads the following value V1 from the counting information DB 822. Further, the lower reference value V2B stored in the memory 82 is read out.
Current total number of shots V1 = 34800
Total number of shots at the time of next maintenance (second reference shot number) V2B = 35600

The index value X2 can be obtained by the following formula using these values V1 and V2B.
Index value X2 = V2B-V1 = 35600-34800 = 800

The value of the cycle time for the display 923 is at least one of the value measured for each opening and closing of the mold 3 included in the count data and the value of the average cycle time calculated by the management device 8.

The display 923 indicates an abnormality notification in at least one of the cases where the deviation between the average value cycle time value and the value measured for each opening and closing of the mold 3 is equal to or greater than the threshold value and when a predetermined number of data equal to or greater than the threshold value are continuous. It may be displayed for. In addition, instead of or in addition to the display for abnormality notification, a message may be transmitted to a specific user terminal. As a result, abnormalities and variations in the cycle time can be notified.

The display screen 920 further includes a button 932 instructing a graph display. In step S107, when the button 932 is operated, the processor 81 may display a graph as shown in the display screen 940 of FIG. The display screen 940 includes a display 941 that displays parameters obtained from the count values stored in the count information DB 822 in chronological order. The parameters obtained from the count value include at least one of the count value and the cycle time.

Specifically, the processor 81 reads from the counting data at the time of the previous maintenance to the latest counting data from the counting information DB 822, and displays the cycle time in chronological order. Cycle time is an example of a parameter obtained from the count value. It may be a count value instead of the cycle time. The display 941 in FIG. 11 shows the cycle time and the mold surface temperature from the time of the previous maintenance in chronological order. It should be noted that the time series here refers to displaying along with the passage of time, and includes arranging the count values in order from the time of maintenance as shown in FIG. As a result, the time change of the cycle time from the counting device 1 can be seen at a glance. In addition, the time change of the mold surface temperature can be seen at a glance along with the time change of the cycle time.

Preferably, the display 941 includes at least a display of the boundary value between abnormal and normal cycle time 944. Boundary values are, for example, control reference values and values defined by rules. The boundary value may be a constant value (for example, 20 s) as in the example of FIG. 11, or may be a value that changes with the passage of time from the previous maintenance. As a result, the comparison with the boundary value of the cycle time can be grasped at a glance. Therefore, it is possible to remotely grasp the precursors of equipment abnormalities in molding and quality abnormalities of molded products.

More preferably, when the deviation from the boundary value of the cycle time is equal to or more than the threshold value, the processor 81 displays 943 indicating that fact. In addition to or in addition to the display 943, a message may be transmitted to a specific user terminal. As a result, the occurrence of an abnormality can be easily grasped and prompt action can be taken. It is also useful for determining the timing of next maintenance.

Preferably, the processor 81 uses the content of the event to determine the necessity of display 943. As an example, in a preset period such as immediately after maintenance or a discarding period, it is determined that the display 943 is not performed even if the deviation from the boundary value of the value included in the count data is equal to or more than the threshold value. As a result, the display 943 can be flexibly performed according to the actual use.

Preferably, the display 941 includes a display 942 representing an event associated with the count data. The display screen 940 includes a display 942 showing the trouble period between the start and end of the trouble. In addition, a display indicating the period of normal mass production may be included. As a result, the event can be grasped at a glance together with the data included in the count data.

The display screen 920 further includes a button 933 for instructing a comparison display. In step S107, when the button 933 is operated, the processor 81 may display a graph as shown in the display screen 950 of FIG. The display screen 950 is a screen for displaying a plurality of count data stored in the count information DB 822 in a comparable manner at predetermined periods with a specific event as a reference time.

Specifically, the display screen 950 sets the reference time to the time of the immediately preceding maintenance, and includes the display of the change in data from the time of the immediately preceding maintenance. That is, it includes the display 951 of the time change of the cycle time from the time of the immediately preceding maintenance and the display 952 of the time change of the mold surface temperature, which are classified by the maintenance interval. In the display 951, 952, "current" refers to the change in the value from the time of the previous maintenance to the latest count data, and "previous period" refers to the count data before the previous maintenance and the next maintenance from the time of the immediately preceding maintenance. It refers to the change in the value of the count data up to the hour. The period before the previous maintenance is not limited to immediately before the previous maintenance, and may be before the previous maintenance.

By dividing the count data at the maintenance interval in this way, it is possible to grasp various states in molding during maintenance at a glance.

Displaying the data in a comparable manner for each predetermined period is, for example, displaying the data of a plurality of periods in an overlapping manner by matching the reference time such as the maintenance time as shown in FIG. In the example of FIG. 12, the time change of the cycle time from the previous maintenance to the latest counting data and the time change of the mold surface temperature are obtained for the counting data before the previous maintenance, respectively, from the time of the immediately preceding maintenance. It is displayed superimposed on the time change of the cycle time and the time change of the mold surface temperature until the next maintenance.

This makes it possible to grasp changes in data behavior at a glance. In the case of the example of FIG. 12, it is understood that the behaviors are almost the same up to the time lapse T from the time of the immediately preceding maintenance, but the data divergence is large after the time lapse T. From this, deterioration of the mold 3 may be estimated. It can also be used to study the next maintenance time.

The reference time is not limited to the time of maintenance. As another example, a specific day or a specific value of the cumulative count from the last maintenance may be used as the reference time. Further, displaying in a comparable manner is not limited to displaying in layers. As another example, it may be displayed with a specific mark common to the reference time.

The display is not limited to the examples of FIGS. 11 and 12. As another example, the processor 81 may display the values obtained from the count data associated with each of the specified plurality of user information in a comparable manner. Further, the values obtained from the count data for different types of molds may be displayed in a comparable manner. In addition, counting data selected by combining user information and molds may be displayed in a comparable manner. By associating various information obtained from the user terminal 9 with the count data, it is possible to display these information as parameters in this way. As a result, useful data for various studies such as production control, maintenance planning, and staffing will be output.

The display screen 920 may further include a button 934 instructing the determination of the next maintenance time. That is, as another example of displaying the screen including the counting result in the processing using the data stored in the counting information DB 822, the processor 81 may determine the timing of the next maintenance.

The memory 82 of the management device 8 stores a reference number of times corresponding to the time of the next maintenance. The larger the standard number of times, the longer the period until the next maintenance, and the smaller the standard number of times, the shorter the period until the next maintenance. That is, determining the timing of the next maintenance is determining the suitability of the reference number of times stored in the memory 82.

As an example, when the frequency of displaying 943 in FIG. 11 becomes equal to or higher than the threshold value, the processor 81 determines that the stored reference number of times is large, that is, it is better to advance the maintenance time. As a result, it is possible to prevent a defect of the mold 3 in advance.

On the contrary, when the period in which the deviation from the boundary value of the obtained value is large in the past count data is less than the threshold value, the processor 81 has a small number of stored reference times, that is, the maintenance time is delayed. May be determined to be good. As a result, excessive maintenance can be suppressed and a decrease in productivity can be suppressed.

As yet another example, the process using the data stored in the counting information DB 822 may be a process of transmitting the data displayed on the display screens 920, 940, 950 to another device. The other apparatus may be, for example, an apparatus for performing maintenance management of molding, an apparatus for performing production control, an apparatus for evaluating an operator, and the like. Also, in the process of using count data as an input value, passing it as an input value to a server that has been machine-learned to use an appropriate maintenance time prediction value or an appropriate setting value as an output value, and transmitting the obtained output value. There may be. By performing such processing, the data accumulated in the management system 100 can be usefully utilized in various aspects.

In the above example, the device used for managing the mold 3 in the management device 8 by imaging the display screen with the user terminal 9 is not limited to the counting device 1, and the peripherals used for molding in addition to the counting device 1. It may be a device. Peripheral equipment is a device for molding other than the molding machine 6 to which the mold 3 is attached, and is a material drying device, a material transporter, a mold temperature controller, a medium temperature controller, a mold cold temperature controller, and the like. Includes at least one of a mold cooler, a compounding device, and a crusher.

In this case, the processor 81 reads out the screen template corresponding to the peripheral device in which the display screen is captured from the screen template table 823. Then, the processor 81 obtains the read data by reading the specified information from the specified position using the read screen template. The read data is associated with the count data and is stored in the count information DB 822. As a result, it becomes possible to associate various data with the counting data, and it becomes possible to manage the multi-faceted mold 3.

The reading process for recognizing the image data as characters may be performed on the user terminal 9 side. In this case, the data D2 includes the read data instead of the image data. As a result, the size of the data D2 is suppressed and the communication load is reduced.

<3. Addendum>
The present invention is not limited to the above embodiment, and various modifications are possible.

1: Counting device 3: Mold 4: First mold 4a: Side surface 5: Second mold 5a: Target surface 6: Molding machine 7: Communication network 8: Management device 9: User terminal 11: Display 14: Detection unit 15: Ejecting unit 16: Light receiving unit 17: Communication device 18: Sensor 20: Processor 21: Memory 42: Memory 81: Processor 82: Memory 83: Communication device 90: Processor 91: Memory 92: Camera 93: Communication device 94: Display 100: Management system 110: Display screen 111: Display 112: Display 113: Display 114: Display 115: Display 121: Screen 122: Screen 123: Screen 201: Data 202: Data 203: Data 204: Image data 205: Data 311: Display 811: Read process 812: Calculation process 813: Accumulation process 814: Output process 816: Judgment process 817: Prediction process 821: Program 822: Counting information DB
823: Screen template table 900: Input screen 901: Input field 902: Input field 903: Button 904: Button 910: Display screen 911A: Button 911B: Button 911C: Button 912A: Button 912B: Button 913A: Button 913B: Button 914: Button 920: Display screen 921: Display 922: Display 923: Display 924: Display 925: Display 926: Display 927: Display 928: Display 929: Display 931: Display 923: Button 933: Button 934: Button 940: Display screen 941: Display 942: Display 943: Display 944: Display 950: Display screen 951: Display 952: Display A: Arrow A1: Period A2: Period B1: Laser light B2: Reflected light C1: Count value C2: Count value C3: Count value D1 : Data D11: Counting data D12: Counting data D13: Counting data D14: Counting data D15: Counting data D16: Counting data D17: Counting data D18: Counting data D2: Data T: Time elapsed T1: Time T2: Time T3: Time

Claims (6)

It is a management device that can communicate with a counting device that obtains the counting value of the number of shots in the mold.
With memory
With a processor,
The processor
A first value, which is the counting value acquired from the counting device, and one or more second values stored in the memory, which are reference values used for determining the next maintenance time, and the like. A management device configured to execute a calculation process for calculating one or more index values that can be used for the determination at the next maintenance. The management device according to claim 1, wherein the index value includes the number of shots that can be taken by the next maintenance. The management device according to claim 1 or 2, wherein the index value includes the number of shots from the time of the immediately preceding maintenance. The processor
Further, an output process for outputting the parameters obtained from the counted values in the first period and the second period in a time series in which the starting points of the first period and the second period are matched is further executed. It is composed and
The first period is the period from the time of the immediately preceding maintenance.
The second period is any one of claims 1 to 3, which is a second period from the time of the first maintenance prior to the immediately preceding maintenance to the time of the second maintenance following the first maintenance. The management device according to paragraph 1. The processor
It is configured to further execute the determination process for determining the next maintenance time based on the parameter obtained from the count value in the first period and the parameter obtained from the count value in the second period. The management device according to claim 4. It is a calculation method in a management device that can communicate with a counting device that obtains the counting value of the number of shots in the mold.
The first value, which is the counting value acquired from the counting device, and one or more second values, which are stored in the memory and are the reference values used for determining the next maintenance time, are set. A calculation method comprising calculating one or more index values that can be used to make a determination at the time of the next maintenance.

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