JP2003001687A - Method for displaying change in molding parameters of injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for displaying a change in parameters by which the presence of a change in the molding parameters for each injection molding machine can be easily displayed, even when a control system capable of collectively controlling a plurality of injection molding machines, is employed. SOLUTION: A change in the molding parameters of each of the injection molding machines is displayed in the screen of a display device installed on a control device of the system for controlling a plurality of the injection molding machines. Each of the injection molding machines is equipped with a detection means for detecting a change in the molding parameters to each of the machines. The control device receives detection results from the detection means at each of the machines. The display device can display the operating state of a plurality of injection molding machines in an operating state screen which collectively displays the operating states of the machines in a split screen fashion. The control device displays a count value of the detection results from the detection means of the corresponding injection molding machine by means of a change frequency display part C1 using the split screen of each machine represented, in a split display mode, in the operating state screen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a change display method for displaying a change in molding conditions in an injection molding machine on a display device in an easy-to-understand manner, and more particularly to a plural machine management system for collectively managing a plurality of injection molding machines. The present invention relates to a method for displaying and changing the molding conditions suitable for the display in.

[0002]

2. Description of the Related Art As a multiple-unit management system for managing a plurality of injection molding machines installed at the same location, for example, a group management system for managing the productivity is provided. In this type of multiple-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 is
Receives various information from various sensors installed in the injection molding machine, processes the received information based on the built-in management program, saves the processed result in the built-in memory, and displays it on the display device as a management screen. . Of course,
Depending on the type of information, the received raw information may be stored in the memory as it is.

[0003]

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. Management of molding conditions is important among them,
Inappropriate condition settings may lead to the production of defective products. However, the actual management of molding conditions is left to the molding site, and it is the current situation that it is not known who changed the setting of molding conditions, or even the fact that they have been changed. Therefore, it is necessary to record the setting change history and manage the molded product in the multiple-unit management system.

Generally, it can be understood that the setting history is managed by using a management system for a plurality of machines by actually examining it by using the management system for a plurality of machines. It takes time to display and check one by one.

An object of the present invention is to provide a method for displaying and changing a molding condition so that whether or not a molding condition is changed in an injection molding machine can be displayed in an easy-to-understand manner.

Another object of the present invention is to provide a molding system in which, even in a management system for collectively managing a plurality of injection molding machines, whether or not the molding conditions of each injection molding machine have been changed can be displayed in an easy-to-understand manner. To provide a method of displaying changes.

[0007]

The change display method according to the present invention is carried out as follows when a single injection molding machine is used.

That is, in the display method for displaying the operation status of the injection molding machine as a management screen on the screen of the display device connected to the control device, the control device counts the number of times of changing the molding condition for the injection molding machine. And a count result is displayed as a number on the display device. In this case, the display device shows the change in the cumulative value of the number of shots for the past Y hours from the present time as a line graph with the time as the horizontal axis, and shows the change situation of the quality data for the Y time with the time as the horizontal axis. It is also possible to display an overall graph screen shown in FIG. 3 and display a number indicating the count result together with a numerical value indicating the Y time in the overall graph screen.

When the present invention is applied to a multi-unit management system for collectively managing a plurality of injection molding machines, it is carried out as follows.

That is, in the display method of displaying the change of the molding condition of each injection molding machine on the screen of the display device provided in the management device in the plural machine management system for managing a plurality of injection molding machines, Includes a detection unit that detects a change in molding conditions for the injection molding machine, the management device receives a detection result from the detection unit in each injection molding machine, and the display device includes the plurality of injection molding machines. The operating status screen of displaying all the operating statuses of all the units in a screen split format at a time is displayed, and the management device separately displays the operating status screen on each of the divided screens of the respective units. , The count value of the detection result from the detecting means in the corresponding injection molding machine is displayed. In this case, in the display device, by clicking a specific portion of the split screen in the operation status screen, the history of setting changes in the injection molding machine corresponding to the clicked split screen is changed item, before change, and changed. It may be possible to display later set values and change date and time for each machine.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A case in which an embodiment of the present invention is applied to a system for managing a plurality of injection molding machines as shown in FIG. 1 will be described. In FIG. 1, a plurality of injection molding machines 10-1 to 10-n are installed in the same place, and these are collectively managed by a management device 20 with a display device. That is, the management device 20 controls the injection molding machines 10-1 to 10-1.
10-n, each of which is connected to each control device, receives various information from various sensors installed in each of the injection molding machines 10-1 to 10-n via each control device, and receives the received information. Processing is performed for each injection molding machine based on a built-in management program, and the processed results are 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.

Next, four examples out of a plurality of types of management screens displayed on the display device to show the operating status of each injection molding machine in the management device 20 will be described.

FIG. 2 is an operation status screen for displaying the operation status of a plurality of injection molding machines in real time. On this operation status screen, the operation status of a plurality of injection molding machines is displayed in real time on a single screen in a screen-divided format for all machines (here, machines 1 to 30).

For example, referring to FIG. 3 which is an enlarged view of the No. 9 machine, the number of the No. machine is shown in the upper left, and the count value of the molding condition change counter (here, 17) is displayed in the change number display section C1 in the upper right. The 24-hour operation status graph is on the right side, and the number of shots (529) and cycle time (14.9) are on the lower side.
sec) is displayed. 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 of each injection molding machine is provided with means for detecting a change in molding conditions, and the management device receives the detection result from each control device and counts each, and displays the count result for each machine on the display device. . In the management device, this display value can be reset as needed.

Further, in this embodiment, the count result is two digits,
In other words, it can be displayed up to 99 times, but can also be displayed in three digits. Alternatively, by coloring the count value to be displayed, for example, black is used up to 99 times and a different color is used after 100 times, for example, red, and [00], 101
If the number of times is displayed in red as [01], the number of times of change of three digits can be displayed on the two-digit display unit.

Further, the 24-hour operation status graph is one in which the operation status of the injection molding machine from the present time to the past 24 hours is color-coded and displayed by one first bar graph B1. The operating status is defined by four types: operating, normal stop (during standby), stop due to an abnormality, and power off. The four types of status are displayed in different colors according to the elapsed time from 24 hours ago to the present time. To be done. Here, the operation is shown in blue, the normal stop is shown in yellow, the stop due to an abnormality is shown in red, and the power is turned off in gray.
Blue indicates hatching on the left, yellow indicates hatching on the right, red shows a satin pattern, and gray shows a mesh pattern. Further, the lowermost end of the first bar graph B1 indicates 24 hours ago, and the uppermost end indicates the current time. For example, from the past 24 hours to 12 hours ago, the normal stop, from the past 12 hours to the present time, it is in operation. If so, the lower half of the first bar graph B1 is displayed in yellow and the upper half is displayed in blue.

Further, in the present embodiment, the appearance of the injection molding machine is schematically displayed in the split screen of each machine, and the background thereof indicates the current operation status. The four types of stop due to an abnormality and the power-off are displayed in the same corresponding color relationship as the color classification in the first bar graph B1. That is, assuming the same as the above example, the background color is blue.

By looking at such an operation status screen, the operator or administrator can easily determine what kind of operating status each unit had in the past, or what kind of operating status is present. In addition to being able to do it, it is possible to know at a glance which machine has changed the molding conditions in the past. In other words, when the operator or administrator leaves the site for some work or shift work and returns to the site, it is possible to easily know whether or not the molding conditions have been changed by someone else.

The value of 24 hours is usually a fixed value, but it may be variable.

By the way, in the management device 20, by clicking a specific part (icon on the screen) in the divided screen of each unit in the above-mentioned operation status screen in the display device, the general condition showing in detail the operating condition of only that unit. The graph screen can be displayed.

FIG. 4 shows an example of the general graph screen. In this general graph screen, 2 for each machine (here, machine 10).
The change status of the quality data for four hours, the presence / absence of an abnormality, and the presence / absence of a setting change are displayed on one screen with time as the horizontal 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 arranged lines, for example, the line L1 has a molding interruption (abnormal occurrence) around 18:00. Indicates that. The "state" of L2 is the same as the display of the operating status described above, and is defined by four types of operation, normal stop (during standby), stop due to an abnormality, and power off, for 24 hours. The state is displayed in different colors according to the time. The "condition name" of L3 is a graph showing the time when the color is changed when the molding condition is changed, that is, the condition name of each molded product is changed. In other words, this is changed when the molded product changes and is displayed in different colors, but the color itself does not have meaning, and the time when the color changes has meaning. On the other hand, the "item" of L4 is a graph that changes the color when the condition item in the molding condition is changed and displays the change with time. For example, the color is changed when the injection condition, the mold opening condition, and the like are changed, and this is also the time when the color is changed, rather than the color itself. Therefore, the colors of “condition name” and “item” are different from “state”, and four or more colors are prepared.

The graph in the first row of L5 is the "filling time" of the display item shown in the display item selection column on the lower side of FIG.
2 shows the passage of time, and the second stage similarly shows the passage of time of the "minimum cushion position". The graph in the third row shows the "holding pressure completion position", and the fourth and fifth steps show the elapsed time of the "VP switching position" and the "pre-filling position", respectively.

Further, in the present embodiment, the operating status of the relevant machine in the past 24 hours is further displayed on the right side of the summary graph screen.
With the second bar graph B2 at an operating rate of ~ 100%, 24
It is displayed together with a numerical value indicating time. In FIG. 4, it is shown that the operating rate for the past 24 hours is 95%,
"Time display" shown in the display item selection column at the bottom of Fig. 4
The number 24, which is the base of the operation rate calculation, is displayed in the section. The numbers in the "time display" column can be changed arbitrarily. That is, the "date and time" and "time display" shown in the display item selection field can be set arbitrarily, and here, September 4, 2000 1
By setting the numerical value from 0:00 to 24 hours, as shown at the top of FIG. 4, 24 hours from September 4, 2000, 10:00 to September 5, 2000, 10:00 Is displayed. If the number 12 is entered in the "time display", the operating rate for the past 12 hours based on 12 hours is displayed on the second bar graph B2. In this case, the graphs or items in the first to eighth rows in FIG. 4 are also shown for the past 12 hours. According to such a second bar graph B2, it is possible to display the operation rate from an arbitrary time and an arbitrary time.

FIG. 5 is an example of the setting history screen. In this setting history screen, the history of setting changes is classified by machine number (here, machine number 10), the changed item, the set value before and after the change, and the change value. It is displayed on one screen together with the date and time.

FIG. 6 is an example of an abnormality history screen. In this abnormality history screen, the history of abnormality occurrence is classified into 1 by machine number (here, 10th machine) together with the abnormality item, the occurrence date and time, and the cancellation date and time.
Displayed on the screen.

As described above, the summary graph screen of FIG. 4 is linked to the operation status screen of FIG. 2, and by clicking a specific part (icon on the screen) of each unit in the operation status screen of FIG. It is supposed to be displayed. Also,
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 summary graph screen of FIG. 4, respectively, and the change count display section C1 of the operation status screen of FIG.
It is designed to be displayed by clicking a specific part (icon on the screen) of the summary graph screen.

From this, when it is desired to know the detailed contents of the change count displayed on the change count display section C1,
This can be easily known by looking at the setting history screen of FIG. That is, when the operator or the administrator leaves the site or returns home, the display count is cleared to 0, and when returning, the count value is displayed in the change count display section C1 corresponding to the operating injection molding machine. If so, it means that the molding conditions have been changed, and details can be analyzed from the setting history screen. According to such usage, it is not necessary to display and check the setting history screens of all the injection molding machines.

Although the above description is applied to a multiple-unit management system, the present invention is not limited to the multiple-unit management system and can be applied to the case of only one injection molding machine. There is also no. That is, the injection molding machine always includes a control device, and a display device for monitoring is connected to the control device. Then, it is possible to display the summary graph screen as shown in FIG. 4, the setting history screen of FIG. 5, and the abnormality history screen of FIG. 6 on this display device. However, since there is no operation status screen as 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.
The change count display portion C1 may be displayed above the first bar graph. Further, in the case of only one injection molding machine, since the control device and the display device are in the immediate vicinity of the main body of the injection molding machine, a screen that schematically shows the appearance of the injection molding machine as shown in FIG. Is unnecessary. In other words, it is not necessary to display the operating status only at the present time.

[0029]

As described above, according to the change display method of the present invention, it is possible to easily confirm whether or not the molding condition has been changed, the number of times of change, and the content of the change at any time, which greatly improves the quality control of the molded product. You can make a contribution. Such a change display method is most suitable for a multiple unit management system that collectively manages a plurality of injection molding machines.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a configuration of a multiple-unit management system for an injection molding machine to which the present invention is applied.

FIG. 2 is a diagram showing an example of a driving status screen as an example of a management screen displayed on the display device of the management device shown in FIG.

FIG. 3 is an enlarged view of one of the split 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.

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.

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.

[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

Claims (4)

[Claims] 1. A display method for displaying an operating condition of an injection molding machine as a management screen on a screen of a display device connected to the control device, wherein the control device counts the number of times of changing molding conditions for the injection molding machine. And a method for displaying and changing a molding condition, wherein the counting result is displayed on the display device as a number. 2. The change display method according to claim 1, wherein
The display device shows a change in the cumulative value of the number of shots for the past Y hours from the present time as a line graph with time as the horizontal axis, and also shows a change situation of the quality data for the Y time with time as the horizontal axis. A method of changing and displaying molding conditions, wherein a graph screen can be displayed, and a number indicating the count result is displayed in the general graph screen together with a numerical value indicating the Y time. 3. A display method for displaying a change in molding condition of each injection molding machine on a screen of a display device provided in a management device in a multi-unit management system for managing a plurality of injection molding machines, wherein each injection molding machine is Includes a detection unit that detects a change in molding conditions for the injection molding machine, the management device receives a detection result from the detection unit in each injection molding machine, and the display device includes the plurality of injection molding machines. It is possible to display the operating status screen that collectively displays the operating status of all the units in a screen split format, and the management device separately displays the split screen of each unit on the operating status screen. A method for changing and displaying a molding condition, wherein the count value of the detection result from the detecting means in the corresponding injection molding machine is displayed. 4. The change display method according to claim 3,
In the display device, by clicking a specific portion of the split screen in the operation status screen, a history of setting changes in the injection molding machine corresponding to the clicked split screen is displayed, the changed item, the setting before the change, and the setting after the change. A method of changing and displaying molding conditions, in which the value and date and time of change can be displayed for each machine.