JP3752979B2 - Method for recording and displaying molding data - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molding data recording / displaying method for recording and displaying molding data of a molding machine represented by a die casting machine, an injection molding machine, etc., and more particularly, molding condition setting values, measurement values, and injection profiles for casting and injection. The present invention relates to a method for recording and displaying molding data in which a plurality of data are recorded and stored and displayed on a monitor screen.
[0002]
[Prior art]
Conventionally, when a molding machine such as a die casting apparatus is referred to as a monitoring apparatus, a molding machine built-in type is used to monitor and display the state of the molding machine in real time. In other words, trend data (variation range of measured values for each shot) for each measurement item is displayed as a graph on the screen.
[0003]
[Problems to be solved by the invention]
However, in an actual molding process, it takes time to go through a plurality of steps from being molded by a molding machine to becoming a product, and to check the state of the product. Therefore, if the product is found to be defective, the molding conditions or the measurement value of the molding process needs to be examined retrospectively. However, in the case of a display device that does not have a molding data recording device, a follow-up survey is performed. It was difficult.
[0004]
For such reasons, monitor display devices equipped with a recording device have been gradually used, but even with a monitor display device with the recording device, various trend data and injection profile data are It is merely recorded and stored in a recording medium as a table file, and it has been difficult to immediately trace back data relating to a desired measurement item retroactively.
[0005]
The present invention records trend data (sometimes referred to as a trend monitor value) including injection condition setting values, and molding data that accumulates data such as injection profiles in a recording medium such as a hard disk of a general-purpose computer for monitor display. Provides a display method, and provides a method for recording and displaying molding data so that a large amount of data can be viewed as efficiently as possible by devising the file type (structure) to be created, data transfer timing, etc. To do.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, a method for displaying molding data according to the present invention is as follows.
(1) A table file in which each measurement item name and actual measurement object have a one-to-one correspondence is created in the measurement computer provided in the molding machine, and any desired measurement item among the various measurement items is recorded on the recording monitor display computer. A method for recording and displaying molding data in which the data of the selected measurement item is recorded and displayed on a recording medium of a recording monitor display computer by selecting, in the recording monitor display computer, Includes molding machine setting data Only one number in each shot cycle File various trend data in one table And recorded as a file structure that can be used as an index file In addition, file injection profile data for each shot, The Associate a file name with one item in the trend data file Record The trend data Notation Based on the recorded data, the injection profile data T Call and display.
[0007]
(2) In the molding data recording and displaying method according to (1), Of trend data By designating a desired one shot using a trend graph screen that displays various trend data in time series based on the recorded data, the injection profile data in the one shot is called and displayed.
[0009]
( 3 ) (1) or (2) In the method of recording and displaying molding data described in the above, the elapsed time from the injection start command is measured by a timer, and at the timing when the elapsed time becomes a preset time, the measurement computer sends the recorded monitor to the recording monitor display computer. To start transferring the injection profile data.
[0010]
( 4 ) Any one item from (1) to (3) In the recording display method of the molding data described in the above, at the timing immediately after the molding cycle of the molding machine is completed, or at the same time as the start of the next molding cycle, the measurement computer displays the previous shot from the recording monitor display computer. Start transferring trend data.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The details of the molding data recording and displaying method according to the present invention will be described below with reference to the drawings. 1 to 11 relate to an embodiment of the present invention, and FIGS. 1 to 3 are conceptual diagrams for explaining the file structure of trend data and injection profiles. FIG. 1 shows a trend data file and injection profile data file. FIG. 2 and FIG. 3 are diagrams for explaining the details by enlarging the trend data and the injection profile. 4 to 6 are flowcharts for explaining the timing of transferring data from the measurement computer to the recording monitor display computer. FIG. 4 shows the injection profile data (also referred to as waveform data) when the injection command is turned off. FIG. 5 shows a case where waveform data is transferred by VP switching, and FIG. 6 shows a case where waveform data is transferred after a specified time elapses after the injection command is cut off.
[0012]
FIG. 7 is a conceptual diagram for explaining the concept of the data directory hierarchy. 8 to 10 show monitor display screens, FIG. 8 is a monitor item setting screen, and FIG. 9 is a trend window screen that continuously displays a plurality of trend data for each shot in time series. FIG. 10 is a shot window screen that displays the injection profile data in an arbitrary desired shot as a waveform. FIG. 11 is a diagram for simply explaining the connection between the measurement computer 10 and the recording monitor display computer 15 provided in the die casting machine.
[0013]
The configurations of the die casting machine 1 and the recording monitor display computer 20 used in the embodiment of the present invention will be described below.
The relationship between the die casting machine 1 used in the present embodiment and the recording monitor display computer 20 is simply shown in FIG.
[0014]
As shown in FIG. 11, the molding machine that is the object of measurement monitoring in this embodiment is a die-casting machine 1, and the die-casting machine 1 includes a sequencer 15 that controls the movement of the machine and a measuring computer 10 therein. It is prepared.
[0015]
The measurement computer 10 is configured to include a measurement board (not shown) so that an injection stroke sensor that requires high-speed sampling, a head pressure of an injection hydraulic cylinder, a pressure pickup that measures rod pressure, and the like can be connected. By connecting to this substrate, the measurement data can be transferred to the measurement computer 10.
[0016]
In the present embodiment, the measurement computer 10 and the sequencer 15 are connected so that serial communication can be performed, and the molding cycle time measured in the sequencer 15 (sometimes referred to as cycle time). ) And the like can be transferred to the measurement computer 10, but this connection is not necessary when the data in the sequencer 15 is not necessary.
[0017]
In the case where the injection characteristics of the die casting machine 1 are to be measured, since the injection operation is very fast, a high sampling rate of 500 Hz to 1 kHz is necessary. It is very difficult to perform high-speed sampling as described above by the sequencer 15.
Therefore, in the present embodiment, the die casting machine is provided with the measurement computer 10 built-in so that the high-speed sampling as described above can be performed.
[0018]
Moreover, since the load of the measurement computer 10 is very low, it is preferable to save resources by using it in common with real-time control of injection with a high load, for example.
[0019]
The recording monitor display computer 20 is connected to the measurement computer 10 via a serial communication cable (cross cable) in order to accumulate data for each shot, and the data sent from the measurement computer 10 is received. Can be stored as a file.
[0020]
The mechanism from when the measurement computer 10 actually collects data from the die casting machine 1 to when the data is transferred to the recording monitor display computer 20 and sent out will be described.
[0021]
First, as a first step, the driver selects and sets a measurement item to be monitored and displayed using a monitor setting item screen as shown in FIG. In the present embodiment, the monitor setting item screen is displayed on the recording monitor display computer 20 so that the driver can easily operate the environment.
[0022]
In the present embodiment, the measurement computer 10 provided in the molding machine constantly creates a table file in which various measurement item names and actual measurement objects correspond one-to-one while the molding machine is in operation. By selecting a desired measurement item using the monitor setting item screen, only the selected measurement item data is transferred to the recording monitor display computer 20.
[0023]
By transferring only the data of the selected measurement item to the recording monitor display computer 20, only the data of the selected measurement item is recorded on the recording medium of the recording monitor display computer in the file structure described later in detail.
In other words, the measurement software shown in the present embodiment includes a monitor setting item (measurement item selection) screen as shown in FIG. 8, and by specifying data such as a desired measurement item on the monitor setting item screen, It is possible to set so that only necessary data is recorded.
[0024]
Hereinafter, the file structure of the molding data recorded in the recording display computer 10 and the timing of data transfer will be described.
[0025]
First, the structure of the data file created by the recording monitor display computer 20 will be described.
The file created and used by the recording monitor display computer 20 in this embodiment stores a trend monitor value of only one numerical value in each shot cycle, such as the shot number, time, and injection condition setting value for each shot. An injection profile data file (referred to as a waveform file) in which a trend data file (sometimes referred to as a trend file) and an injection profile data for each shot (injection stroke or pressure profile during continuous injection in time) are stored. There are two types). Examples of trend data include molding time and the average value of injection speed within one shot. Examples of injection profile data include changes in injection pressure, injection speed, etc. within one shot. Profile data indicating
[0026]
The two files are stored in a directory structure whose concept is shown in FIG. txt (trend file), shot. txt (injection profile data file) is stored in two files, and the tag of the trend item to be actually measured and the tag of the profile measurement item are each separated in a comma-delimited text format. Stored).
[0027]
In the present embodiment, the HDD of the recording monitor display computer 20 is used as the recording medium. However, the recording medium applicable to the present invention is not limited to this, and is a general recording medium such as an optical recording disk or a magnetic recording disk. It goes without saying that the electronic recording medium used in the above is included.
[0028]
FIG. 1 is a diagram conceptually showing the file structure of trend data and injection profiles stored in the HDD of the recording monitor display computer 20. Various trend data including molding condition setting value data of the molding machine is filed in a single table, and the injection profile data is enlarged and shown in detail in FIGS. Each shot is filed separately.
[0029]
The data stored in the recording monitor display computer 20 has a capacity of 200 to 300 MBybe / day in daily capacity. In order to access necessary data among these enormous amounts of data as quickly as possible, some kind of index (table of contents or index) is required. Therefore, in the present invention, a trend file under the daily directory is used as an index file. .
[0030]
Here, in the present embodiment, the trend data of the trend file is associated with ShotDate (described in the second column from the left toward the table of the trend data file shown in FIGS. 1 and 2) for each shot. As shown in FIG. 1, for example, the file name of the injection profile data is 103701. associated with the shot data 103701 (10:37:01) of the trend data file. It is created as csv. The ShotDate in the present embodiment is each time data when a shot is performed, and is data that does not overlap in the same molding machine on the same day.
[0031]
In the present embodiment, as shown in FIG. 1, the ShotDate is the file name of the injection profile data, and one item of the trend data file is associated with the injection profile data as shown in FIG. The trend data file can be used as an index file for injection profile data.
[0032]
Then, after the molding data is recorded and stored in the file structure as described above, a trend graph screen in which various trend data are displayed in time series on the monitor screen of the recording monitor display computer 20 is shown. FIG. 9 shows an example of a trend graph screen in which trend data relating to the average value of the injection speed and trend data relating to the biscuit length are displayed and a part of various trend data is displayed in time series.
In the present embodiment, a trend graph in which a part of trend data is displayed in time series is shown as an example, but it is needless to say that all trend data may be displayed in time series.
[0033]
Next, in the trend graph on the trend graph screen, a shot whose detailed data is to be confirmed is designated using a cursor or a mouse.
Also, at the same time that the shot is designated, what kind of data is desired to be confirmed is designated, and an injection profile in an arbitrary desired shot is called and displayed. In the present embodiment, the injection profile data is displayed in a graph on a screen (shot window) as shown in FIG.
[0034]
More specifically, based on the shot number, time, trend item value, etc., the shot information to be viewed on the trend window as shown in FIG. 9 is determined, and the cursor is moved to that shot. Adjust to the position of. By pressing the shot information call button on the window from this state, the injection profile data of the specific shot as shown in FIG. 10 can be called, and the injection condition setting value information and trend data can be called instantly. it can. In addition, by pressing a file movement button on this shot window, it is also possible to call up shot information before and after that in time.
[0035]
In other words, in the present embodiment, when the trend data in one shot is selected and specified using the trend graph, the injection profile data is quickly searched based on the ShotDate recorded in the trend data. Can be called. That is, by efficiently retrieving data using trend data as an index, it is possible to immediately call and display data related to a shot to be confirmed.
[0036]
If molding data is simply saved as a table file as in the prior art, searching takes time and effort, whereas this embodiment can quickly specify a shot to be confirmed using a display screen.
[0037]
In addition, according to the present embodiment, an abnormal shot generated during continuous molding can be easily confirmed on a visual display screen, and the details of the injection shot can be specified by specifying the abnormal shot using the trend graph screen. The data can be grasped, and the cause for the product defect can be efficiently investigated.
[0038]
Next, the timing at which the measurement computer 10 sends the two types of data to the recording monitor display computer 20 during the molding cycle of the die casting machine will be described.
[0039]
Generally, the waveform file of injection profile data is high-speed sampling, and includes 6 series of profile data such as elapsed time, stroke, speed, head pressure, rod pressure, and metal pressure from the injection command, so 200-300 kbytes per shot. Capacity is required.
[0040]
When the recording monitor display computer 20 and the measurement computer 10 are connected by RS-232C serial communication as in this embodiment, a transfer time of 20 to 30 sec is required even if 115200 bps is used as the data transfer rate, and die casting is performed. In order to keep this transfer time in one cycle of the process, it is desirable to start transfer immediately after the end of data sampling.
[0041]
In the present embodiment, as shown in FIG. 6, an elapsed time from an injection start command (sometimes referred to as an injection command) is measured with a timer, and at the timing when the elapsed time becomes a preset time, Transfer of injection profile data from the measurement computer 10 to the recording monitor display computer 20 is started. In the present embodiment, the injection profile data is transferred by waveform download.
[0042]
As for the transfer start timing of the injection profile data, it is preferable to execute the transfer of the injection profile data immediately after the end of the data sampling, so that the preset time is adjusted to be the transfer start timing immediately after the end of the data sampling. It is preferable to do.
[0043]
As for the transfer start timing in this embodiment in which the molding data of the die casting machine is recorded and displayed, the injection profile sampling time is 1 to 2 seconds after the VP switching operation (switching from injection speed control to injection pressure control). The injection profile data is transferred immediately after the measurement time has elapsed, and the preset time is adjusted so that one to two seconds after the VP switching operation is the transfer start timing.
[0044]
Also, the injection profile data can be transferred at the transfer timing as shown in FIG. 4 or FIG. 5, and the injection profile data can be transferred earlier than the transfer timing as shown in FIG. Since there is a high possibility that data will be transferred before sampling is completed, and part of the injection profile data may be lost, it can be used only when the accuracy of the injection profile data is not so important. .
[0045]
Next, the trend data transfer start timing will be described. Since the trend data includes data that is not determined until the end of the cycle, it is normally transferred after waiting for the next cycle start signal to rise or fall as shown in FIG. It is preferable to do. The trend data transfer time ends instantaneously because the amount of trend data is small, but it should be ensured that the data in the transfer area remains unchanged until the next cycle.
[0046]
When the monitor computer receives the trend data, it adds a new trend data line to the bottom of the current trend data file, and records and saves it in an increased number of lines in the table file. The In this embodiment, transfer of trend data is started by a trend download command, and data is transferred by trend download.
[0047]
Here, the standard production amount of a general die casting apparatus is about 1000 shots / day, and when such amount of data is processed and stored, it is an easy-to-understand method to manage every day.
[0048]
The data file of this embodiment is also managed in a directory for each day as shown in FIG. 7, and the date of casting is used as the name of each directory, thereby making it easy to call data later.
[0049]
Also, under each daily directory, there is one trend file (trend.csv) and an injection profile data file for each shot, and the file name of the injection profile data file (sometimes referred to as an injection profile name). Is a 6-digit number with an extension (.csv) added to the time when the injection start command is issued, 2 digits per hour, minute and second.
And since the data of the injection profile name bearing this injection time is also stored in the trend file for each shot, each line of the trend file and each injection profile data file can correspond one-to-one. .
[0050]
As shown in the directory structure of FIG. 7, in this embodiment, the recording monitor display computer 20 is carried as a portable computer such as a notebook computer, is carried with measurement software, and is serially connected to the die casting machine 1 to be measured for data. The directory for each machine is arranged directly under the data directory. Further, a daily directory is created under the directory for each machine, and the actual measurement data as described above is stored therein.
[0051]
The features of the trend graph according to this embodiment will be briefly described below.
Usually, the horizontal axis of a graph called a trend graph is a number that is continuous between shots, such as a shot number, and is not meaningful in itself. In contrast, if you bring the time axis to the horizontal axis of the trend window, the machine operating status (whether there was downtime, the cycle was stable, etc. at the same time as the data trend and the monitor value trend, etc. ) Can be seen, which is a preferable configuration for confirming the molding abnormality.
[0052]
In the present embodiment, the horizontal axis selection area in FIG. 9 is used to adjust the number of data to be displayed on the trend graph and the time, and the horizontal axis is also displayed as the time axis. It is also possible to do.
[0053]
Furthermore, in this embodiment, it is also possible to introduce a marking system on the product separately, and to take a one-to-one correspondence between the measured data on the product marking and this trend graph screen. Therefore, excellent reliability can be established in a molding system for a product that requires the above.
[0054]
【The invention's effect】
The present invention records and saves molding data such as molding process condition setting values and measurement values on a recording medium, creates a trend data file and an injection profile data file, and a part of the saved trend data, or By displaying all of them on the screen, it is possible to quickly specify an arbitrary shot made in the past using the displayed trend data. Further, by calling the injection profile data file using the trend file in which the trend data is recorded as an index file, it is possible to access a large amount of accumulated data at high speed.
[0055]
According to the present invention, for the reasons described above, a poorly formed product found in a post-molding process (for example, a heat treatment or cutting process) is molded under any molding condition, and in that case, molding is performed. Various conditions such as how the machine was operating and what the operating environment of the machine was can be easily confirmed, so that the cause of molding defects can be quickly checked.
[0056]
Furthermore, according to the present invention, the elapsed time from the injection start command is measured by a timer, and the injection profile data is sent from the measurement computer to the recording monitor display computer in accordance with the timing when the sampling of the injection profile data ends. This transfer time can be set during one cycle of the molding process.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a correlation between a trend data file and an injection profile data file according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating details of a trend data file according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating details of an injection profile data file according to the embodiment of the present invention.
FIG. 4 is a timing flowchart in the case of transferring waveform data when an injection command is turned off according to the embodiment of the present invention.
FIG. 5 is a timing flowchart in the case of transferring waveform data by VP switching according to the embodiment of the present invention.
FIG. 6 is a timing flowchart in the case of transferring waveform data after a specified time has elapsed since the injection command was turned off according to the embodiment of the present invention.
FIG. 7 is a conceptual diagram illustrating a concept of a data directory hierarchy according to the embodiment of the present invention.
FIG. 8 is a monitor item setting screen according to the embodiment of the present invention.
FIG. 9 is a trend window screen for continuously displaying a plurality of trend data for each shot according to the embodiment of the present invention.
FIG. 10 is a shot window screen that displays a desired waveform of injection profile data in an arbitrary shot according to an embodiment of the present invention.
FIG. 11 is a diagram for explaining the connection between the measurement computer and the recording monitor display computer provided in the die casting machine according to the embodiment of the present invention.
[Explanation of symbols]
1 Die casting machine
10 Measuring computer
15 Sequencer
20 Computer for recording monitor display

Claims (4)

A table file in which each measurement item name and actual measurement object have a one-to-one correspondence is created in the measurement computer provided in the molding machine, and any desired measurement item among the various measurement items is recorded on the recording monitor display computer. A method for recording and displaying molding data in which data of the selected measurement item is recorded and displayed on a recording medium of a recording monitor display computer by selecting,
In the recording monitor display computer, various trend data of only one numerical value in each shot cycle including molding condition setting value data of the molding machine is filed in one table and recorded as a file structure that can be used as an index file. With
Into a file for each shot injection profile data, by Rukoto to record 該Fu Airu name associated with one item in the file of the trend data,
Based on the record data of the trend data, a recording method for displaying molding data and displaying calls the injection-profile data. By designating an arbitrary desired shot using a trend graph screen that displays various trend data in time series based on the recorded data of the trend data, the injection profile data in the one shot is called and displayed. The method for recording and displaying molding data according to claim 1. The elapsed time from the injection start command is measured by a timer, and at a timing when the elapsed time becomes a preset time, transfer of injection profile data from the measurement computer to the recording monitor display computer is started. A method for recording and displaying molding data according to claim 1 or 2 . The transfer of trend data of the previous shot is started from the measurement computer to the recording monitor display computer at the timing immediately after the molding cycle of the molding machine is completed or at the same time as the start of the next molding cycle. The method for recording and displaying molding data according to any one of claims 1 to 3 .

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