JP4629289B2 - Molding machine with analog waveform search function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molding machine such as an injection molding machine, and more particularly, to a molding machine with an analog waveform search function that enables a user to search and display or print what is desired to be referred to from among a large number of analog waveforms obtained in actual molding. .
[0002]
[Prior art]
Of the molding machines, for injection molding machines, detection signals from various sensors are used for feedback control, and this detection signal is displayed as an analog waveform for each shot to troubleshoot abnormalities and to control molding quality. It could be used for quality evaluation as a substitute characteristic. In addition, the analog waveform at the time of mass production is temporarily stored in a large-capacity storage device, and further stored in a removable storage medium such as a memory card or magnetic disk from this storage device, so that this analog waveform is the same molded product at another time. It was possible to use it as an analog waveform as a reference for producing good products.
[0003]
[Problems to be solved by the invention]
However, there is no way to know what state the injection molding machine was in the past analog waveforms collected and stored. Therefore, if an analog waveform at the time of occurrence of an abnormality is included in the analog waveforms collected and stored in the past, and it is attempted to retrieve it, it is necessary to display and confirm all analog waveforms by a display device or the like. It was necessary and troublesome work was required for a long time. This is a problem common not only to injection molding machines but also to extrusion molding machines and other molding machines in general.
[0004]
Therefore, an object of the present invention is to make it possible to quickly search for a reference from a huge amount of past analog waveforms collected by a molding machine, and to perform various analyzes in a short time and accurately. It is in.
[0005]
[Means for Solving the Problems]
According to the present invention, the first memory means for temporarily storing the detection signals from the plurality of sensors in the molding machine main body and the peripheral device as analog waveform information for each shot, and the detection signals from the plurality of sensors. Second memory means for temporarily storing each monitoring actual value as logging information for each shot, and each information is stored together with shot number information or time information, and further stored in the second memory means Including, for each information stored in the second memory means, a setting means for inputting a characteristic amount necessary for retrieving the information obtained from the second memory means by retrieval. by performing a search based on the feature quantity input from the setting unit, less stored in said first memory corresponding to information obtained by the search A search means for taking out one type of analog waveform information in association with the number of shots information or the time information, and an output means for displaying or printing at least the analog waveform taken out by the search means. There is provided a molding machine with an analog waveform search function characterized in that what is desired to be referred to from analog waveform information can be obtained in a short time.
[0006]
According to the present invention, the first memory means for temporarily storing the detection signals from the plurality of sensors in the molding machine main body and the peripheral device as analog waveform information for each shot, and the setting contents changed by the setting device, Third memory means for temporarily storing the operated contents as setting history information and operation history information, and each information is stored together with shot number information or time information, and further, information stored in the third memory means is stored. , Including setting means for inputting a characteristic amount necessary for retrieving from the third memory means by the search, input from the setting means for each piece of information stored in the third memory means By performing a search based on the obtained feature amount, at least one type of analog wave stored in the first memory corresponding to the information obtained by the search By providing a search means for extracting information in association with the shot number information or the time information, and at least an output means for displaying or printing the analog waveform extracted by the search means, from among a large amount of analog waveform information There is provided a molding machine with an analog waveform search function characterized in that what is desired to be referred to can be obtained in a short time.
[0007]
According to the present invention, the first memory means for temporarily storing detection signals from a plurality of sensors in the molding machine main body and the peripheral device as analog waveform information for each shot, and the contents at the time of occurrence of abnormality in the abnormality history information 4th memory means for temporarily storing the information as above, each information is stored together with shot number information or time information, and further, the information stored in the fourth memory means is retrieved by searching the fourth memory means. Including a setting unit for inputting a feature amount necessary for extraction from the information, and performing a search based on the feature amount input from the setting unit for each piece of information stored in the fourth memory unit Accordingly, at least one type of analog waveform information stored in the first memory corresponding to the information obtained by the search is stored in the shot number information. By providing a search means to be extracted in association with the time information and an output means to display or print at least the analog waveform extracted by the search means, it is possible to quickly search what is desired to be referred to from a large amount of analog waveform information. There is provided a molding machine with an analog waveform search function, which is characterized in that it can be obtained.
[0008]
Further, the information which is temporarily stored in the first to fourth memory means can be stored in a removable storage medium such as a memory card or a magnetic disk so that desired information designated by the setting means can be saved. One interface may be provided.
[0009]
Further, when the output means is a display means and there are a plurality of types of information to be displayed, the plurality of types of information can be displayed by a divided screen or overwriting.
[0010]
Further, when displaying related to the occurrence of abnormality by the display means, it is possible to display an analog waveform of the number of shots or time at the time of occurrence of the abnormality and at least one analog waveform before and after that.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described for an injection molding machine with an analog waveform search function. The injection molding machine main body is usually provided with a plurality of sensors such as a resin pressure sensor, a resin temperature sensor in the heating cylinder, a screw position sensor in the heating cylinder, an injection pressure sensor, and a mold clamping pressure sensor. A control device as a peripheral device of the injection molding machine main body performs molding control in response to a detection signal of this type of sensor. The control device also has timekeeping functions such as cycle time, filling time, and metering time for each shot. In this embodiment, a signal obtained by such a timekeeping function is also handled as a detection signal of the sensor. Simply put, the above cycle time, filling time, weighing time, etc. are not recorded as analog waveforms, but as logging information as monitoring actual values and setting history that shows setting values when settings are changed with a setting device Used as information.
[0012]
In this embodiment, by providing the following components, an analog waveform to be referred to can be easily searched on a setting screen of a display or an external waveform analysis device.
[0013]
(1) A large-capacity memory (first memory means) capable of temporarily storing analog waveforms obtained from detection signals from a plurality of sensors.
[0014]
{Circle around (2)} A large-capacity memory (second memory means) that temporarily stores actual values for monitoring monitored by an injection molding machine as logging information based on detection signals from a plurality of sensors.
[0015]
{Circle around (3)} A large-capacity memory (third memory means) that temporarily stores setting values changed by the setting device and contents of operations as setting history information and operation history information.
[0016]
(4) A large-capacity memory (fourth memory means) for temporarily storing the contents at the time of occurrence of abnormality as abnormality history information.
[0017]
(5) An interface that allows necessary information to be saved on a removable storage medium such as a memory card or a magnetic disk from among those temporarily stored in the memory of (1) to (4) above, or a larger capacity such as a hard disk An interface that enables transfer of information stored in the memories (1) to (4) by communication to a backup memory or outside the injection molding machine.
[0018]
Since the information (1) to (4) is obtained for each shot, all the information is stored together with the shot number information or time information indicating at what time the shot number is stored or at what time.
[0019]
(6) Search for feature values for the information of (5) or (2) to (4) above, for example, “cycle time of 7 seconds or more”, “filling peak pressure of 20% or more”, “automatic” A search unit capable of searching analog waveforms such as “5th shot after operation” and “when the variation in measurement time is within ± 0.2 seconds”.
[0020]
(7) A setter for inputting a feature amount for searching for the feature amount.
[0021]
(8) Output means such as a display or printer capable of sequentially or dividing or overwriting the information retrieved in (6) above.
[0022]
FIG. 1 is a diagram showing a specific configuration for realizing the above (1) to (8). In FIG. 1, detection signals from a plurality of sensors are analog signals, and are collected in the signal input unit 11 together with, for example, various contact signals other than the detection signals. Various signals collected by the signal input unit 11 are output to the signal processing unit 12.
[0023]
The signal processing unit 12 converts the input signal into a digital signal and then stores the specific signal selected in advance in the waveform actual value holding unit 13 as analog waveform actual value information together with shot number information or time information. . The signal processing unit 12 also sends the monitoring actual value selected in advance from the signal converted into the digital signal to the logging and history information holding unit 14 together with shot number information or time information as logging information for each shot. Save. What is stored in the logging and history information holding unit 14 includes timekeeping information from the control device, that is, logging information, as described above. The logging and history information holding unit 14 also sends out the contents of the abnormality together with the shot number information or time information from the control device (not shown) of the injection molding machine body when an abnormality occurs in the actual molding. Save. The logging and history information holding unit 14 further sets and changes the molding conditions and the like when the setting conditions (not shown) of the injection molding machine main body are set and changed. Is sent together with the shot number information or time information. That is, here, the second to fourth memories described above are realized by one memory. Of course, the logging and history information holding unit 14 stores the logging information, the abnormality history information, and the setting history information in different storage areas that are set in correspondence with each other.
[0024]
The setter 15 is a setter for the above-mentioned (7), and is used for inputting the above-described feature amount and giving it to the search unit 16. When the feature amount is input by the setting device 15, the search unit 16 performs a search based on the input feature amount, and is stored in the waveform actual value holding unit 13 corresponding to the information obtained by the search. At least one type of analog waveform information is extracted in association with shot number information or time information. The extracted analog waveform is displayed on the display 17. Output means such as a printer may be used in addition to or instead of the display 17.
[0025]
The search unit 16 also removes desired information specified by the setting unit 15 from the information temporarily stored in the waveform record value holding unit 13 and the logging and history information holding unit 14 such as a memory card or a magnetic disk. A first interface 18 is provided that enables storage on media. The search unit 16 further sends desired information designated by the setting unit 15 from the information temporarily stored in the waveform record value holding unit 13 and the logging and history information holding unit 14 to an analysis device or the like outside the injection molding machine. A second interface 19 that can be transferred by communication is provided.
[0026]
The external analysis device is also configured to include at least output means such as a search unit, a setting device, a display, or a printer shown in FIG.
[0027]
FIG. 2 is a display example of logging information. Here, for convenience, the actual values are all zero. Here, in addition to the actual values such as the cycle time, filling time, metering time, and pressure holding screw time sent from the control device, the actual values such as cushion position, pressure holding completion position, V / P switching position, etc. are logged. Information is displayed together with shot number information.
[0028]
FIG. 3 is a display example of the abnormality history information, in which the type of abnormality is displayed together with the occurrence time and release time information.
[0029]
FIG. 4 is a display example of setting history information, in which the type of setting change on the left side in the figure and the operation content on the right side in the figure are displayed together with time information.
[0030]
FIG. 5 shows a display example of an analog waveform (hydraulic pressure actual waveform). Referring to FIG. 5, when another example of the feature amount input is given, a waveform in which the peak value of the pressure actual waveform during a certain time zone T1 to T2 in one shot exceeds a predetermined value, or in one shot It is also possible to define an analog waveform to be searched with a feature amount such as a waveform in which the minimum value of the actual pressure waveform during a certain time period T3 to T4 is lower than a certain value.
[0031]
The display examples in FIGS. 2 to 5 are all well-known examples in which the display is performed by the conventional injection molding machine, but in the waveform actual value holding unit 13 and the logging and history information holding unit 14 in the present embodiment. Stores at least information that allows such display.
[0032]
FIG. 6 shows an example in which a plurality of types of analog waveforms in a shot are displayed by overwriting according to the function of this embodiment. Waveform 1 represents the speed setting value, and waveform 2 represents the speed detection value. Waveform 3 represents a holding pressure set value, and waveform 4 represents a holding pressure detection value. Although an analog waveform for one shot is displayed here, a partial waveform in a certain time zone with one shot can be displayed by setting the setting unit 15. Also, each of a plurality of waveforms can be displayed on a divided screen obtained by dividing the screen into a plurality of screens instead of overwriting. Furthermore, in the case of performing display related to the occurrence of abnormality, it is possible to display an analog waveform of the number of shots or time at the time of occurrence of abnormality and at least one, preferably a plurality of analog waveforms before and after that. By doing so, it becomes easier to analyze the difference between when an abnormality occurs and when it is normal. Furthermore, not only the analog waveform as shown in FIG. 6 but also various screens as shown in FIGS. 2 to 4 may be displayed on the divided screen.
[0033]
The present invention relates to an injection molding machine capable of displaying detection signals from various sensors as analog waveforms, and an analog waveform capable of collecting detection signals from various sensors in the injection molding machine. Applicable to collectors. Further, the present invention can be applied not only to an injection molding machine but also to other general processing machines such as a sheet molding machine, a sealing device, and a film processing machine.
[0034]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0035]
1) Large capacity analog waveforms can be collected without worrying about the complexity of post-processing. The reason is that if an analog waveform is simply collected, it takes time to evaluate the analog waveform, so that it is desired to keep the data collection to a minimum. However, since an analog waveform to be referred to later can be searched, it is not wasted even if a large amount of analog waveforms are collected.
[0036]
2) It can contribute to improving the accuracy of troubleshooting and analysis of defective products when an abnormality occurs. The reason for this is that large-capacity analog waveform data can be constructed according to the above 1), so that the difference between the normal state and the occurrence of a malfunction can be displayed on the display and verified later.
[Brief description of the drawings]
FIG. 1 is a diagram showing the configuration of an embodiment of the present invention in the case of an injection molding machine with an analog waveform search function.
FIG. 2 is a diagram showing a display example of conventional logging information.
FIG. 3 is a diagram showing a display example of conventional abnormality history information.
FIG. 4 is a diagram showing a display example of conventional setting history information.
FIG. 5 is a diagram showing a display example of a conventional analog waveform.
FIG. 6 shows an example in which a plurality of analog waveforms are displayed by overwriting according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Signal input part 12 Signal processing part 13 Waveform performance value holding part 14 Logging and log | history information holding part 15 Setting device 16 Searching part 17 Display

Claims (6)

First memory means for temporarily storing detection signals from a plurality of sensors in the molding machine main body and peripheral device as analog waveform information for each shot;
Second memory means for temporarily storing actual values for monitoring based on detection signals from the plurality of sensors as logging information for each shot;
Each information is stored together with shot number information or time information,
Further, the information stored in the second memory means is stored in the second memory means, including setting means for inputting a feature amount necessary for retrieving the information from the second memory means by searching. By performing a search based on the feature amount input from the setting unit for each piece of information, at least one type of information stored in the first memory corresponding to the information obtained by the search Search means for extracting analog waveform information in relation to the shot number information or the time information;
By providing at least an output means for displaying or printing the analog waveform extracted by the search means,
A molding machine with an analog waveform search function, characterized in that what can be referred to from a large amount of analog waveform information can be obtained in a short time. First memory means for temporarily storing detection signals from a plurality of sensors in the molding machine main body and peripheral device as analog waveform information for each shot;
Third memory means for temporarily storing the setting contents changed by the setting device and the operation contents as setting history information and operation history information;
Each information is stored together with shot number information or time information,
Further, the information stored in the third memory means is stored in the third memory means, including setting means for inputting a characteristic amount necessary for retrieving from the third memory means by retrieval. By performing a search based on the feature amount input from the setting unit for each piece of information, at least one type of information stored in the first memory corresponding to the information obtained by the search Search means for extracting analog waveform information in relation to the shot number information or the time information;
By providing at least an output means for displaying or printing the analog waveform extracted by the search means,
A molding machine with an analog waveform search function, characterized in that what can be referred to from a large amount of analog waveform information can be obtained in a short time. First memory means for temporarily storing detection signals from a plurality of sensors in the molding machine main body and peripheral device as analog waveform information for each shot;
Fourth memory means for temporarily storing the contents at the time of occurrence of abnormality as abnormality history information;
Each information is stored together with shot number information or time information,
Furthermore, the information stored in the fourth memory means is stored in the fourth memory means, including setting means for inputting a characteristic quantity necessary for retrieving from the fourth memory means by searching. By performing a search based on the feature amount input from the setting unit for each piece of information, at least one type of information stored in the first memory corresponding to the information obtained by the search Search means for extracting analog waveform information in relation to the shot number information or the time information;
By providing at least an output means for displaying or printing the analog waveform extracted by the search means,
A molding machine with an analog waveform search function, characterized in that what can be referred to from a large amount of analog waveform information can be obtained in a short time.   Further, a first information that allows desired information designated by the setting means to be saved in a removable storage medium such as a memory card or a magnetic disk among the information temporarily saved in the first to fourth memory means. The molding machine with an analog waveform search function according to claim 1, further comprising an interface.   The said output means is a display means, and when the information displayed is multiple types, these multiple types of information are displayed by a divided screen or an overwriting. Molding machine with analog waveform search function.   6. The display according to claim 5, wherein when displaying related to the occurrence of abnormality by the display means, an analog waveform of the number of shots or time at the time of occurrence of the abnormality and at least one analog waveform before and after that is displayed. The molding machine with the analog waveform search function described.

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