JP3661613B2 - Method for changing and displaying molding conditions in an injection molding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a change display method for displaying a change in molding conditions in an injection molding machine in an easy-to-understand manner to an operator using a display device, and in particular, molding conditions suitable for display in a multi-unit management system that collectively manages a plurality of injection molding machines. It is related with the change display method.
[0002]
[Prior art]
As a multiple unit management system that manages a plurality of injection molding machines installed at the same place, for example, a group management system that manages from the viewpoint of productivity is provided. In this type of multi-unit management system, for example, a personal computer with a display device is provided as a management device connected to a plurality of injection molding machines. The management device receives various information from various sensors installed in the injection molding machine, processes the received information based on a built-in management program, saves the processed result in a built-in memory, and displays it as a management screen Is displayed. Of course, depending on the type of information, the received raw information may be stored in the memory as it is.
[0003]
[Problems to be solved by the invention]
By the way, since the injection molding machine is a facility for producing a molded product, it is a very important issue for the production site to pay particular attention to the quality of the molded product. Among them, management of molding conditions is important, and defective products may be produced under inappropriate condition settings. However, the actual management of the molding conditions is left to the molding site, and it is not known who changed the molding conditions or how they were changed. For this reason, it is necessary for the multiple-unit management system to record the setting change history and manage the molded product.
[0004]
In general, using a multi-unit management system to manage the setting history can be understood by actually using the multi-unit management system, but display the setting history for each injection molding machine, It takes time to check one by one.
[0005]
The subject of this invention is providing the change display method of a molding condition which can display easily the presence or absence of the change of the molding condition in an injection molding machine.
[0006]
Another object of the present invention is to display a molding condition change display that can easily display whether or not there is a change in molding conditions in each injection molding machine, even in a management system that collectively manages a plurality of injection molding machines. To provide a method.
[0009]
[Means for Solving the Problems]
When the present invention is applied to a multi-unit management system that collectively manages a plurality of injection molding machines, the present invention is implemented as follows.
[0010]
That is, in a display method for displaying a change in molding conditions of each injection molding machine on the screen of a display device provided in a management apparatus in a multiple management system for managing a plurality of injection molding machines, each injection molding machine A detection means for detecting a change in molding conditions for the molding machine, wherein the management device receives a detection result from the detection means in each injection molding machine, and the display device is operated by the plurality of injection molding machines. Is displayed on the operation status screen for all the units in a split screen format, and the management device corresponds to each of the division screens of each unit displayed in the operation status screen. The number of changes in molding conditions detected by the detecting means in the injection molding machine is displayed. In this case, in the display device, by clicking on a specific part of the split screen on the operation status screen, the setting change history in the injection molding machine corresponding to the clicked split screen is changed, before the change, and changed. It may be possible to display the set value and the change date and time later by machine.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A case will be described in which the embodiment of the present invention is applied to a multiple-unit management system for injection molding machines as shown in FIG. In FIG. 1, a plurality of injection molding machines 10-1 to 10-n are installed at the same place, and these are collectively managed by a management device 20 with a display device. That is, the management device 20 is connected to each control device in the injection molding machines 10-1 to 10-n, and various kinds of sensors from various sensors installed in the injection molding machines 10-1 to 10-n. Information is received via each control device, and the received information is processed for each injection molding machine based on a built-in management program, and the processed result is stored in a built-in memory and displayed on a display device as a management screen. Depending on the type of information, the received raw information is stored in the memory as it is.
[0012]
Next, four examples of a plurality of types of management screens displayed on the display device in order to represent the operating status of each injection molding machine in the management device 20 will be described.
[0013]
FIG. 2 is an operation status screen that displays the operation status of a plurality of injection molding machines in real time. On this operation status screen, the operating status of a plurality of injection molding machines is displayed on a single screen in real time for all the units (here, No. 1 to No. 30) in a screen division format.
[0014]
For example, referring to FIG. 3 showing the enlarged view of No. 9, the number of the No. machine is shown in the upper left, the count value (17 here) of the molding condition change counter is displayed in the change number display section C1 in the upper right, The 24-hour operating status graph shows the number of shots (529) and cycle time (14.9 sec) on the lower side. Here, the molding condition change counter is a counter that counts how many times the molding conditions have been changed from the start of molding to the present. This counter is provided in the management device. The control device in each injection molding machine is provided with means for detecting a change in molding conditions. The management device receives the detection result from each control device, counts each, and displays the count result for each unit on the display device. . In the management apparatus, this display value can be reset as necessary.
[0015]
In this embodiment, the count result can be displayed up to 2 digits, that is, 99 times, but can also be displayed in 3 digits. Alternatively, by adding a color to the count value to be displayed, it is displayed up to 99 times, for example, black, after 100 times, for example, as red, 100 times is displayed as [00], and 101 times is displayed as [01] and red. By doing so, it is possible to display a 3-digit change count on a 2-digit display section.
[0016]
The 24-hour operation status graph is a single first bar graph B1 in which the operation status of the injection molding machine in the past 24 hours from the current time is color-coded. The operation status is defined by four types: operation, normal stop (during standby), stop due to abnormality, and power-off, and the four types of status are displayed in different colors according to the passage of time from 24 hours ago to the present time. Is done. Here, operation is shown in blue, normal stop is yellow, stop due to abnormality is red, and power-off is shown in gray. In FIG. 3, blue is left-down hatching, yellow is right-down hatching, and red is satin The pattern and gray are shown as a mesh pattern. In addition, the lowermost end of the first bar graph B1 indicates 24 hours ago, and the uppermost end indicates the current time point. If there is, the first bar graph B1 is displayed with the lower half in yellow and the upper half in blue.
[0017]
Further, in this embodiment, the appearance of the injection molding machine is schematically displayed in the divided screen of each unit, and the background is based on the operation, the normal stop, and the occurrence of abnormality to indicate the current operation status. The four types of stop and power off are displayed in the same color relationship as the color classification in the first bar graph B1. That is, if it is the same as the above example, the background color is blue.
[0018]
By looking at this operating status screen, the operator or administrator can easily determine what operating status each unit has in the past or what operating status it currently has. In the past, it can be known at a glance at which machine the molding conditions have been changed. In other words, when the operator or manager leaves the site for some errand or shift work and returns to the site again, it can be easily known whether or not the molding conditions have been changed by someone else.
[0019]
The numerical value of 24 hours is usually a fixed value, but may be variable.
[0020]
By the way, in the management apparatus 20, the summary graph screen which shows the operation | movement condition of only the applicable machine in detail by clicking the specific location (icon on a screen) in the division | segmentation screen of each car in the said operation condition screen in a display apparatus. It can be displayed.
[0021]
FIG. 4 shows an example of the summary graph screen. In this summary graph screen, the change status of quality data for 24 hours, presence / absence of abnormality, and presence / absence of setting change horizontally for each unit (here, No. 10). It is displayed on one screen as an axis. In FIG. 4, the uppermost graph is a line graph showing the change in the cumulative value of the number of shots, and a plurality of vertically entering lines, for example, the line L1, has a molding interruption (occurrence of anomaly) around 18:00. It shows that. The “state” of L2 is the same as the display of the operation status described above, and is defined by four types: operation, normal stop (during standby), stop due to abnormality occurrence, and power off, and 24 hours worth The status is displayed in different colors according to the time. The “condition name” of L3 is a graph showing the change time when the molding condition is changed, that is, when the condition name for each molded product is changed, the color is changed. In other words, this is changed when the molded product changes, and is displayed by color, but the color itself is not meaningful, but is meaningful at the time when the color changes. On the other hand, the “item” in L4 is a graph that displays the change in color with time when the condition item in the molding condition is changed. For example, the color is changed when an injection condition, a mold opening condition, or the like is changed, and this is also more meaningful at the time when the color changes rather than the color itself. For this reason, four or more colors are prepared for “condition name” and “item”, unlike “status”.
[0022]
Further, the first graph of L5 shows the elapsed time of the “filling time” of the display item shown in the display item selection column on the lower side of FIG. 4, and the second row similarly shows the time of “minimum cushion position”. Show progress. The third graph shows the “holding pressure completion position”, and the fourth and fifth graphs show the elapsed time of “VP switching position” and “pre-filling position”, respectively.
[0023]
Further, in this embodiment, the operating status of the unit in the past 24 hours is further displayed on the right side of the general graph screen with a numerical value indicating 24 hours by the second bar graph B2 at an operating rate of 0 to 100%. ing. FIG. 4 shows that the operating rate for the past 24 hours is 95%, and the operating rate calculation is based on “time display” shown in the display item selection column on the lower side of FIG. The number is displayed. The numbers in the “time display” column here can be arbitrarily changed. In other words, the “date and time” and “time display” shown in the display item selection field can be arbitrarily set, and here, a numerical value of 24 hours from 10:00 on September 4, 2000 is set. As shown in the uppermost part of FIG. 4, 24 hours from 10:00 on September 4, 2000 to 10:00 on September 5, 2000 are displayed. If the number “12” is entered in “time display”, the operation rate for the past 12 hours based on 12 hours is displayed in the second bar graph B2. In this case, the graphs or items in the first to eighth stages in FIG. 4 are also shown for the past 12 hours. According to such 2nd bar graph B2, the operation rate from arbitrary time of arbitrary time can be displayed.
[0024]
FIG. 5 shows an example of the setting history screen. In this setting history screen, the history of setting change is 1 for each unit (here, No. 10), together with the changed item, the setting value before and after the change, and the change date and time. Displayed on the screen.
[0025]
FIG. 6 shows an example of an abnormality history screen. In this abnormality history screen, the history of abnormality occurrence is displayed on one screen for each unit (here, No. 10) together with the item of abnormality, the occurrence date and time, and the release date and time. .
[0026]
As described above, the general graph screen of FIG. 4 is linked to the operation status screen of FIG. 2, and is displayed by clicking a specific location (icon on the screen) of each unit on the operation status screen of FIG. It is like that. Further, the setting history screen of FIG. 5 and the abnormality history screen of FIG. 6 are linked to the operation status screen of FIG. 2 and the general graph screen of FIG. 4, respectively. It is displayed by clicking a specific part (icon on the screen) of the 4 general graph screen.
[0027]
From this, when it is desired to know the detailed change contents of the change count displayed in the change count display section C1, it can be easily found by looking at the setting history screen of FIG. That is, when the operator or manager leaves the site or returns home, the display count is cleared to 0, and when the operator returns, the count value is displayed on the change count display section C1 corresponding to the operating injection molding machine. If it is, it means that the molding conditions have been changed, and details can be analyzed from the setting history screen. According to such a usage, it is not necessary to display and check the setting history screen for every injection molding machine.
[0028]
In addition, although said description is about the case where it applies to a multi-unit management system, it cannot be overemphasized that this invention is applicable not only to a multi-unit management system but to the case of only one injection molding machine. That is, the injection molding machine always includes a control device, and a monitor display device is connected to the control device. Then, the general graph screen as shown in FIG. 4, the setting history screen of FIG. 5, and the abnormality history screen of FIG. 6 can be displayed on this display device. However, since there is no operation status screen as shown in FIG. 2, the first bar graph B1 as shown in FIG. 3 is replaced with the second bar graph B2 in the general graph screen in FIG. It may be displayed above the bar graph. In the case of only one injection molding machine, the control device and the display device are located in the immediate vicinity of the main body of the injection molding machine, so a screen schematically showing the appearance of the injection molding machine as shown in FIG. Is unnecessary. In other words, there is no need to display the operating status only at the present time.
[0029]
【The invention's effect】
As described above, according to the change display method of the present invention, it is possible to easily check whether or not the molding conditions have been changed and the number of times, and further, the contents of the change at any time, which can greatly contribute to the improvement of the quality control of the molded product. . Such a change display method is optimal for a multiple-unit management system that collectively manages a plurality of injection molding machines.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing the configuration of a multi-unit management system for an injection molding machine to which the present invention is applied.
2 is a diagram showing an example of an operation status screen as an example of a management screen displayed on the display device of the management device shown in FIG. 1. FIG.
3 is an enlarged view of one of the divided screens shown in FIG.
4 is a diagram showing an example of a general graph screen as another example of the management screen displayed on the display device of the management device shown in FIG. 1. FIG.
FIG. 5 is a diagram showing an example of a setting history screen as another example of the management screen displayed on the display device of the management device shown in FIG. 1;
6 is a diagram showing an example of an abnormality history screen as another example of the management screen displayed on the display device of the management device shown in FIG. 1. FIG.
[Explanation of symbols]
10-1 to 10-n Injection molding machine 20 Management device B1 First bar graph B2 Second bar graph C1 Change count display section

Claims (2)

In a display method for displaying a change in molding conditions of each injection molding machine by a screen of a display device provided in a management apparatus in a multiple unit management system for managing a plurality of injection molding machines,
Each injection molding machine includes a detecting means for detecting a change in molding conditions for the injection molding machine,
The management device receives a detection result from the detection means in each injection molding machine,
The display device is capable of displaying an operating status screen that collectively displays the operating status of the plurality of injection molding machines for all the units in a screen split format.
The management device displays the number of molding condition changes detected by the detecting means in the corresponding injection molding machine on each of the divided screens of each of the units that are divided and displayed on the operation status screen. How to display changes in molding conditions. The change display method according to claim 1, wherein the display device changes a setting change history in the injection molding machine corresponding to the clicked divided screen by clicking a specific portion of the divided screen on the operation status screen. The molding condition change display method is characterized in that the displayed items, the set values before and after the change, and the change date and time can be displayed for each machine.

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