Molding machine management system

Abstract

To properly manage each molding machine in a molding machine management system that manages the production of a plurality of molding machines.SOLUTION: A molding machine management system 100 for managing the production of a plurality of molding machines 101, 102, and 103, comprises a display section for displaying production results and a scheduled production status in correspondence with a time axis for each molding machine, and displaying an abnormality of the molding machine in correspondence with the time axis for each molding machine when the molding machine management system 100 receives the abnormality of the molding machine. If the molding machine management system 100 has the above configuration, each molding machine can be properly managed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a molding machine management system. [Background technology]

[0002] Conventionally, molding machine management systems that manage the production of molding machines have been used. For example, Patent Document 1 discloses a monitoring device that can manage the production of injection molding machines. The monitoring device of Patent Document 1 displays abnormality occurrence information in a band shape on a line graph of the operating status of the injection molding machine based on the shot number data. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-293761 A Summary of the Invention [Problem to be solved by the invention]

[0004] The molding machine management system may manage the production of multiple molding machines. When the molding machine management system manages the production of multiple molding machines, it is preferable that it is possible to manage the production of each molding machine, in addition to managing the overall production of the multiple molding machines. This is because, in the event of an abnormality, appropriate action can be taken for each molding machine, and the overall production efficiency can be improved.

[0005] However, the monitoring device of Patent Document 1 aims to identify the cause when an abnormality occurs, and only displays the time when the abnormality occurs and its duration as abnormality occurrence information. Therefore, for example, it is not possible to distinguish between an abnormality occurring in multiple monitoring devices and an abnormality occurring in one monitoring device. In this way, in a conventional molding machine management system such as the monitoring device of Patent Document 1, it is difficult to appropriately manage each molding machine when managing the production of multiple molding machines. [Means for solving the problem]

[0006] The molding machine management system of the present invention, which is intended to solve the above problems, is a molding machine management system that manages production from a plurality of molding machines, and is characterized in that it displays production results and planned production status for each molding machine in correspondence with a time axis, and is equipped with a display unit that displays a molding machine abnormality for each molding machine in correspondence with the time axis when the molding machine management system receives a molding machine abnormality. [Brief description of the drawings]

[0007] [Figure 1] 1 is a diagram showing a schematic configuration of an injection molding machine management system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a diagram showing a schematic configuration of a molding machine management system in the injection molding machine management system of FIG. 1. [Diagram 3] An example of the molding machine management system shown in Figure 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] First, the present invention will be briefly described. The molding machine management system of the first aspect of the present invention for solving the above problems is a molding machine management system that manages production from a plurality of molding machines, and is characterized in that it displays production results and planned production status for each molding machine in correspondence with a time axis, and has a display unit that displays the molding machine abnormality for each molding machine in correspondence with the time axis when the molding machine management system receives a molding machine abnormality.

[0009] According to this aspect, the production results and planned production status are displayed for each molding machine in correspondence with the time axis, and when a molding machine abnormality is received, the molding machine abnormality is displayed for each molding machine in correspondence with the time axis. Therefore, when a molding machine abnormality occurs, the worker can easily recognize which molding machine and in what time period the abnormality occurred. In particular, by taking into account the production results and the planned production status, it is possible to recognize which molding machine and in what time period the abnormality occurred, so that subsequent measures can be taken particularly appropriately. Therefore, each molding machine can be appropriately managed among multiple molding machines.

[0010] The molding machine management system of a second aspect of the present invention is the molding machine management system of the first aspect, characterized in that the display unit displays an abnormality in the molding machine with an icon.

[0011] According to this aspect, an abnormality in the molding machine is displayed by an icon, so that when an abnormality occurs in the molding machine, the operator can easily recognize the abnormality at a glance.

[0012] The molding machine management system of a third aspect of the present invention is the molding machine management system of the second aspect, characterized in that the display unit displays the icon differently depending on the content of the abnormality in the molding machine.

[0013] According to this aspect, different icons are displayed depending on the type of abnormality in the molding machine. Therefore, for example, by using different icons depending on the number of abnormalities, an operator can easily recognize the abnormality when, for example, the degree of the abnormality is severe and multiple abnormalities have occurred in one molding machine. Also, for example, by using different icons depending on the type of abnormality, an operator can easily recognize the type of abnormality. Therefore, an operator can take appropriate action depending on the scale and priority of the abnormality.

[0014] The molding machine management system of a fourth aspect of the present invention is the molding machine management system of the second aspect, characterized in that the display unit displays the icon differently depending on the progress of the abnormality in the molding machine.

[0015] According to this aspect, different icons are displayed depending on the progress of the abnormality in the molding machine. Therefore, the operator can easily recognize the current state of the molding machine in which the abnormality occurred. For example, by using different icons for a state in which the molding machine in which the abnormality occurred is in the same state as the abnormality occurred, a state in which work is being done to remove the cause of the abnormality, a state in which the cause of the abnormality has been removed and molding of molded products can be resumed, and a state in which the cause of the abnormality has been removed and molding of molded products has been resumed, the operator can easily recognize the current state of the molding machine in which the abnormality occurred.

[0016] A fifth aspect of the molding machine management system of the present invention is characterized in that, in any one of the first to fourth aspects, the display unit displays an abnormality in the molding machine when the molding machine management system inputs at least one of the result of a defective judgment of a molded product by the molding machine and a change in the molding conditions of the molding machine that exceeds a threshold value.

[0017] According to this aspect, the molding machine management system displays an abnormality in the molding machine when it receives at least one of the results of the defective judgment of the molded product by the molding machine and a change exceeding a threshold value of the molding conditions of the molding machine. The number of defects can be accurately recognized from the defective judgment result of the molded product, and the abnormality in the molding machine can be recognized from the change exceeding a threshold value of the molding conditions of the molding machine.

[0018] A sixth aspect of the molding machine management system of the present invention is characterized in that, in any one of the first to fifth aspects, the display unit displays the production results, including the operation of the molding machine, the stoppage of the molding machine, and the operation preparation status of the molding machine, as well as the planned end time of production corresponding to the production results up to the present, in correspondence with a time axis for each molding machine.

[0019] According to this aspect, the operating, stopped, and ready-to-operate states of the molding machines as production results and the scheduled end time of production corresponding to the production results up to now are displayed for each molding machine in correspondence with the time axis, allowing the operator to recognize the production results of each molding machine in detail.

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. First, a schematic configuration of an injection molding machine management system according to an embodiment of the present invention will be described with reference to FIG. 1. The injection molding machine management system of this embodiment includes a molding machine 101, a molding machine 102, and a molding machine 103 as multiple injection molding machines, and a molding machine management system 100 that manages the production of these multiple injection molding machines. Each injection molding machine and the molding machine management system 100 are electrically connected by wiring 11. However, each injection molding machine and the molding machine management system 100 may also be electrically connected wirelessly via a wireless LAN or the like.

[0021] Here, molding machine 101, molding machine 102, and molding machine 103 all have the same configuration. Note that, although the injection molding machine management system of this embodiment has three injection molding machines, the number of injection molding machines may be two or four or more.

[0022] 1, each of molding machines 101, 102, and 103 includes a control unit 14 and an injection device 15. The injection device 15 includes a heating cylinder 18 that heats and melts resin as a molding material (not shown) supplied from a hopper 16, and an injection nozzle 19 that injects the molten resin. In addition, a screw (not shown) is disposed in the heating cylinder 18 so as to be movable back and forth and rotatable.

[0023] The injection device 15 also includes a metering motor (not shown) and an injection motor (not shown). When the screw is rotated by driving the metering motor, a predetermined amount of molten resin is accumulated in front of the screw in the heating cylinder 18, and when the screw is advanced by driving the injection motor, the accumulated resin in the front is injected and filled into the cavity space of the mold device in the state where the mold is closed. When the resin in the cavity space is cooled to become a molded product and the mold is opened, an ejector pin is advanced by driving an ejection motor as an ejection drive part of the ejector device (not shown), and the molded product is ejected and released from the mold.

[0024] As shown in Fig. 1, the molding machine management system 100 includes a user interface 20 that accepts various information inputs by an operator, a display unit 30, and a control unit 40. The configuration of the molding machine management system 100 will be described in more detail below with reference to Fig. 2. Note that although the molding machine management system 100 of this embodiment is provided separately from the injection molding machines, it is not necessary to provide it separately from the injection molding machines. It is also possible to realize the molding machine management system by using a control device including a user interface and a display unit (not shown) that are originally provided in at least one of the molding machines 101, 102, and 103, and a control unit 14.

[0025] 2, the user interface 20 includes a keyboard 21 and a mouse 22. However, the configuration is not limited to this, and the user interface 20 together with the display unit 30 may be configured as a touch panel or the like.

[0026] As shown in Fig. 2, the control unit 40 includes a CPU 41 and a storage unit 42. The storage unit 42 is made up of a hard disk and a RAM, and stores data for data logging, such as pressure, temperature, speed, etc., obtained for each shot during molding, setting change history data obtained when molding conditions are changed, abnormality occurrence history data obtained when an abnormality occurs and is detected, and shot count data, for a predetermined period of time in the past, here 24 hours or more. The data for data logging is data obtained from various sensors installed in the injection molding machine for logging, such as a resin pressure sensor in the mold, a screw position sensor, and a speed sensor for each motor, and this type of data logging is performed in any injection molding machine, so a detailed description will be omitted.

[0027] The CPU 41 processes the various data obtained by reading them out from the storage unit 42, and displays the overall operating status of the molding machines 101, 102, and 103, the operating status of each production line, and the detailed operating status of each molding machine on the display unit 30 in a multi-screen on a common time axis so that the operating status can be seen at a glance. A specific display example on the display unit 30 will be described in detail below with reference to FIG. 3. Here, in this embodiment, the molding machine 101 corresponds to the molding machine 1 in FIG. 3, the molding machine 102 corresponds to the molding machine 2 in FIG. 3, and the molding machine 103 corresponds to the molding machine 3 in FIG. 3. The molding machines 101 and 102 form the production line 1, and the molding machine 103 forms the production line 2 by itself. Note that the numerical values ​​in FIG. 3 may be different from the actual values ​​in order to easily explain the present invention.

[0028] As shown in the upper left of the display unit 30 in Fig. 3, the molding machine management system 100 of this embodiment displays the overall operating status of the molding machines 101, 102, and 103. The displayed contents are the achievement rate at the current time against the planned production volume at the current time, the equipment operation rate of the entire injection molding machine from the start of production to the current time, the defect rate of molded products produced so far, and the number of defects of molded products produced so far. The achievement rate and equipment operation rate are displayed as a percentage, the defect rate is displayed in ppm (parts per million), and the number of defects is displayed in number. However, these ways of displaying are not limited to those of this embodiment.

[0029] 3, the molding machine management system 100 of this embodiment displays the operating status of each production line. The display contents show, for each production line, the actual operating rate from the start of production to the current time relative to the planned operating rate from the start of production to the current time, and the current status of the injection molding machines that make up the production line. It shows that the operating rate of production line 1, which is made up of molding machines 101 and 102, is about 50%, the operating rate of production line 2, which is made up of molding machine 103, is 90% or more, molding machines 101 and 103 are currently operating, and molding machine 102 is currently stopped due to an abnormality.

[0030] As shown in the lower part of the display unit 30 in Fig. 3, the molding machine management system 100 of this embodiment displays detailed operating status for each molding machine. The displayed contents include the current state of each injection molding machine, production and defect records for each injection molding machine, production progress for each injection molding machine, production schedules for each injection molding machine corresponding to a time axis from midnight to 12:00 p.m. (24:00), and operating status up to the present time. Note that Fig. 3 shows an example when the current time is around 13:00.

[0031] Here, we will explain in detail the production and defect records of each injection molding machine among the detailed operating status of each molding machine shown in the lower part of the display unit 30 in Fig. 3. The production and defect records are displayed for each molding machine, showing the planned number of molded products as the production plan, the number of molded products produced up to the current time as the production result, and the number of molded products judged to be defective out of the total number of molded products produced up to the current time as the defect rate, expressed in ppm.

[0032] Next, the detailed operation status of each molding machine shown in the lower part of the display unit 30 in FIG. 3 will be described in detail with respect to the production schedule and the operation status up to the present time for each injection molding machine corresponding to the time axis from 0:00 am to 12:00 pm. The production plan and the production results up to the present time are displayed in a bar graph corresponding to the time axis. In this bar graph, light gray indicates the production setup period corresponding to the preparation for operating the injection molding machine, dark gray indicates the operation period of the injection molding machine, and black indicates the period during which the injection molding machine is stopped due to an abnormality occurring in the injection molding machine. From this bar graph, the progress of the production results up to the present time against the production plan can be seen at a glance. Note that the star-shaped icon is an icon indicating the scheduled end time, and the star-shaped icon on the production results side moves in accordance with the production results. Note that, although the time axis of the display unit 30 is displayed from 0:00 am to 12:00 pm, if the period from the start of production to the end of production is 24 hours or more, the period of the time axis displayed on the display unit 30 can be arbitrarily determined. For example, if production starts at 9 am on the current day and ends at 11 am the next day, the time axis of the display unit 30 may display the period from midnight on the current day to midnight on the next day.

[0033] In addition, below the bar graph, a display space for an abnormality icon that is displayed when an abnormality occurs in the injection molding machine is provided in correspondence with the time axis. The abnormality icon can display three different sizes of round icons according to the degree of abnormality. For example, if the number of abnormalities in the molded products is less than the first threshold, no round icon is displayed; if the number of abnormalities in the molded products is equal to or greater than the first threshold and less than the second threshold, a small round icon is displayed; if the number of abnormalities in the molded products is equal to or greater than the second threshold and less than the third threshold, a medium round icon is displayed; and if the number of abnormalities in the molded products is equal to or greater than the third threshold, a large round icon is displayed. FIG. 3 shows a case in which an abnormality occurs in the number of abnormalities in the molded products that is equal to or greater than the second threshold and less than the third threshold in the 9 o'clock hour in the molding machine 101, and an abnormality occurs in the number of abnormalities in the molded products that is equal to or greater than the first threshold and less than the second threshold in the 5 o'clock hour in the molding machine 102, and an abnormality occurs in the number of abnormalities in the molded products that is equal to or greater than the second threshold and less than the third threshold in the 6 o'clock hour ...5 o'clock hour in the 5 o'clock hour in the molding machine 102. In addition, if the cursor is placed on the round icon, the specific number of abnormalities can be displayed.

[0034] From the bar graph at the bottom of the display unit 30 in Fig. 3, it can be seen that the molding machine 1 started operation about 15 minutes later than the production schedule due to production setup, stopped abnormally for about 30 minutes at around 4:00, and if operation continues in this state, the scheduled end time will be in the 18:00 hours instead of the 17:00 hours. The bar graph also shows that the molding machine 2 stopped abnormally at around 6:00, and although operation and production setup were repeated in the 6:00 hours, it has been stopped since about 7:00, and even if it resumes operation, the scheduled end time will be in the 22:00 hours instead of the 17:00 hours. The bar graph also shows that the molding machine 3 started operation about 30 minutes later than the production schedule due to an abnormal stop, and if operation continues in this state, the scheduled end time will be in the 19:00 hours instead of the 18:00 hours. In addition, an abnormal stop occurs when the molding machine management system 100 receives data indicating an abnormality from each molding machine, or when an operator discovers an abnormality in a molding machine and manually inputs a stop command from the molding machine management system 100 or from each molding machine.

[0035] As described above, the molding machine management system 100 of this embodiment is a molding machine management system that manages the production of multiple molding machines (molding machine 101, molding machine 102, and molding machine 103). The molding machine management system 100 of this embodiment is equipped with a display unit 30 that displays the production results and planned production status in a bar graph corresponding to the time axis for each molding machine as shown in FIG. 3, and displays the molding machine abnormality in a round icon corresponding to the time axis for each molding machine when the molding machine management system 100 receives a molding machine abnormality. Note that "molding machine abnormality" includes not only a case where a molding machine breaks down and stops operating, but also a case where the molding machine operates but there is an abnormality in the molded product. Also, "when a molding machine abnormality is received" corresponds to the above-mentioned case of abnormal stop, and corresponds to a case where the molding machine management system 100 stops the molding machine by receiving data indicating an abnormality from each molding machine, or a case where an operator finds an abnormality in the molding machine and manually inputs a stop command from the molding machine management system 100 or each molding machine to stop the molding machine.

[0036] In this way, by displaying the production results and the planned production status for each molding machine in correspondence with the time axis, and by displaying the molding machine abnormality for each molding machine in correspondence with the time axis when a molding machine abnormality is received, the operator can easily recognize which molding machine and in which time period the abnormality occurred when a molding machine abnormality occurs. In particular, since it is possible to recognize which molding machine and in which time period the abnormality occurred by taking into consideration the production results and the planned production status, it is possible to take particularly appropriate measures thereafter. For example, if the abnormality occurs near the end of production, it is possible to select to have another molding machine cover the molding. On the other hand, if the abnormality occurs in a time period far from the end of production, it is possible to select to immediately repair the molding machine in which the abnormality occurred and resume molding. Therefore, the molding machine management system 100 of this embodiment can appropriately manage each molding machine among a plurality of molding machines.

[0037] Here, the display unit 30 in the molding machine management system 100 of this embodiment displays any abnormality in the molding machine with a round icon as described above. Therefore, when an abnormality occurs in the molding machine, the operator can easily recognize the abnormality at a glance. Note that, in this embodiment, the abnormality in the molding machine is displayed with a round icon, but the shape of the icon is not particularly limited.

[0038] In addition, the display unit 30 in the molding machine management system 100 of this embodiment can display different icons, such as a small round icon, a medium round icon, and a large round icon, depending on the content of the abnormality of the molding machine, as described above. For this reason, by using different icons depending on the level of the abnormality, such as the number of abnormalities, and the content of the abnormality, for example, when the level of the abnormality is severe and multiple abnormalities occur in one molding machine, the worker can easily recognize the abnormality. On the other hand, for example, different icons may be used depending on the content of the abnormality. By using different icons depending on the content of the abnormality, the worker can easily recognize the content. Therefore, the worker can take appropriate action depending on the scale and priority of the abnormality. Examples of "displaying different icons" include changing the size of the icon as in this embodiment, as well as changing the color or shape.

[0039] Here, the display unit 30 in the molding machine management system 100 of this embodiment can display different icons according to the type of abnormality in the molding machine as described above, and can also display different icons according to the progress of the abnormality in the molding machine. Specifically, for example, different icons can be used when the molding machine in which the abnormality occurred is in the same state as when the abnormality occurred, while work is being done to remove the cause of the abnormality, when the cause of the abnormality has been removed and molding of molded products can be resumed, and when the cause of the abnormality has been removed and molding of molded products has been resumed. This allows the operator to easily recognize the current state of the molding machine in which the abnormality occurred.

[0040] As described above, the molding machine management system 100 of this embodiment can display the specific number of abnormalities that have occurred when the cursor is placed on a round icon. On the other hand, when different icons are displayed according to the progress of the abnormalities in the molding machine, the estimated time required to remove the cause of the abnormality can be displayed by placing the cursor on the icon. In this way, it is preferable to have a configuration in which detailed information is displayed by placing the cursor on an icon.

[0041] Here, the display unit 30 in the molding machine management system 100 of this embodiment can display an abnormality in the molding machine with an icon when the molding machine management system 100 inputs at least one of the results of the defective judgment of the molded product by the molding machine and the change exceeding the threshold of the molding conditions of the molding machine. The number of defects can be accurately recognized from the defective judgment result of the molded product, and the abnormality of the molding machine can be recognized from the change exceeding the threshold of the molding conditions of the molding machine. Note that the "defective judgment of the molded product" can be, for example, a visual judgment by an operator, or an automatic judgment by a device that reads an image of the molded product using an image reading device equipped with a camera or the like. Also, the "change exceeding the threshold of the molding conditions of the molding machine" can be, for example, a change exceeding the threshold of the temperature inside the molding machine.

[0042] As described above, the display unit 30 in the molding machine management system 100 of this embodiment displays, on a time axis for each molding machine, the operating, stopped, and ready to operate states of the molding machine as production results, as represented by the bar graph on the production results side of Fig. 3, and the scheduled production end time corresponding to the production results up to the present, as represented by the star-shaped icon on the production results side of Fig. 3. This allows the operator to recognize the production results of each molding machine in detail.

[0043] Further, although the display unit 30 in this embodiment is provided in the molding machine management system 100, it may be provided in a display terminal different from the molding machine management system 100 via a network.

[0044] The present invention is not limited to the above-mentioned embodiments, and can be realized in various configurations without departing from the spirit of the present invention. The technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention can be appropriately replaced or combined in order to solve some or all of the above-mentioned problems or to achieve some or all of the above-mentioned effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0045] 11...wiring, 14...control unit, 15...injection device, 16...hopper, 18...heating cylinder, 19...injection nozzle, 20...user interface, 21...keyboard, 22...mouse, 30...display unit, 40...control unit, 41...CPU, 42...storage unit, 100...molding machine management system, 101...molding machine (injection molding machine), 102...molding machine (injection molding machine), 103...molding machine (injection molding machine)

Claims

1. A molding machine management system that manages production by a plurality of molding machines, a display unit that displays the production results and the planned production status for each molding machine in correspondence with a time axis, and displays the abnormality of the molding machine in correspondence with the time axis for each molding machine when the molding machine management system receives an abnormality of the molding machine, The display unit is The operating, stopped, and ready-to-operate states of the molding machines as the production results and the scheduled end time of production corresponding to the production results up to now are displayed on the same time axis for each molding machine, and the data for multiple molding machines are displayed on a single screen. The overall operating status of multiple molding machines and the line operating status are displayed on one screen. The overall operation status is at least one of the following: an achievement rate at the current time against a planned production volume at the current time, an equipment operation rate of the entire molding machine from the start of production to the current time, a defective rate of molded products produced so far, and a defective number of molded products produced so far; The line operation status is, for each production line formed by one or more molding machines, an actual operation rate from the start of production to the current time relative to a planned operation rate from the start of production to the current time, and the current state of the molding machines forming the production line. A molding machine management system characterized by:

2. The molding machine management system according to claim 1, A molding machine management system characterized in that the display unit displays abnormalities in the molding machine using icons.

3. 3. The molding machine management system according to claim 2, A molding machine management system characterized in that the display unit displays the icon differently depending on the content of the abnormality in the molding machine.

4. 3. The molding machine management system according to claim 2, A molding machine management system, characterized in that the display unit displays the icon in a different way depending on the progress of the abnormality in the molding machine.

5. The molding machine management system according to any one of claims 1 to 4, A molding machine management system characterized in that the display unit displays an abnormality in the molding machine when the molding machine management system inputs at least one of the result of a defective judgment of a molded product by the molding machine and a change in the molding conditions of the molding machine that exceeds a threshold value.

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