JP2002052590A - Method for recording and displaying molding data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for recording and displaying molding data capable of rapidly examining the data by tracing back to the past at a time point in which a product has been discovered to be defective. SOLUTION: The method for recording and displaying the molding data comprises the steps of filing various type trend data including molding condition set value data of a molding machine and injection profile data, relating a file name of the profile data to one item of a file of the trend data and recording the file of the trend data as recording data of a file structure capable of being utilized as a index file in a recording medium, designating a desired arbitrary one shot by using a screen of the trend graph displaying the various type trend data in time series based on the recorded data, calling thereby and displaying the injection profile in the one shot.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of recording and displaying molding data of a molding machine such as a die casting machine or an injection molding machine, and more particularly to a method of setting molding conditions for casting and injection. The present invention relates to a method of recording and displaying molding data in which a plurality of data, such as values, measured values, and injection profiles, are recorded and stored, accumulated, and displayed on a monitor screen.

[0002]

2. Description of the Related Art Conventionally, if a molding machine such as a die-casting device is referred to as a monitor device, the state of the molding machine is monitored and displayed in real time with a molding machine built-in type. In such a case, the screen is automatically updated, and in some cases, trend data (variation range of measured values for each shot) is displayed on the screen as a graph on a monitor.

[0003]

However, in the actual molding process, it takes a long time to pass through a plurality of steps from the molding by the molding machine to the product, and to be able to confirm the state of the product. Therefore, when a product is found to be defective, it is necessary to check the molding conditions or the measured values of the molding process retroactively.However, if the display device is not equipped with a recording device for molding data, it must be traced. It was difficult.

[0004] For such a reason, a monitor display device equipped with a recording device has been gradually used. However, even with a monitor display device provided with the recording device, various kinds of trend data and injection profiles have been used. The data is simply recorded and stored on a recording medium as a table file, and it has been difficult to immediately trace back data on a desired measurement item to the past.

According to the present invention, there is provided a molding method for accumulating trend data (also referred to as a trend monitor value) including an injection condition setting value and data such as an injection profile in a recording medium such as a hard disk of a general-purpose computer and displaying the data on a monitor. It provides a method for recording and displaying data, and records and displays molding data so that a large amount of data can be browsed as efficiently as possible by devising the type (structure) of the file to be created and the data transfer timing. It provides a method.

[0006]

According to the present invention, there is provided a method for recording and displaying molding data according to the present invention. (1) Various trend data including molding condition set value data of a molding machine are stored in a single table file. In addition, the injection profile data is filed for each shot, and the file name of the injection profile data is associated with one item of the trend data file, so that the file of the trend data can be used as an index file. Data is recorded on a recording medium, and at least one of the injection profile data and various trend data is called and displayed based on the recorded data.

(2) In the method for recording and displaying molding data according to (1), any desired one shot can be selected using a trend graph screen for displaying various trend data in time series based on the recording data. By specifying
The injection profile data for the one shot is called and displayed.

(3) On a measuring computer provided in the molding machine, a table file is created in which the names of the various measurement items and the actual measurement objects correspond one-to-one, and a desired arbitrary measurement item is selected from the various measurement items. When selected by the recording monitor display computer, only the data of the selected measurement item is recorded on the recording medium of the recording monitor display computer and displayed.

(4) In the method of recording and displaying molding data according to (3), the elapsed time from the injection start command is measured by a timer, and the measuring computer is used at the timing when the elapsed time reaches a preset time. The transfer of the injection profile data to the recording monitor display computer is started.

(5) In the method for recording and displaying molding data according to (4), the measuring computer displays the recording monitor at the timing immediately after the end of the molding cycle of the molding machine or at the same time as the start of the next molding cycle. The trend data of the previous shot is started to be transferred to the computer.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of a method for recording and displaying molding data according to the present invention will be described below with reference to the drawings.
FIGS. 1 to 11 relate to an embodiment of the present invention, and FIGS. 1 to 3 are conceptual diagrams for explaining a file structure of trend data and an injection profile. FIG. 1 shows a trend data file and an injection profile data file. 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 injection profile data (sometimes called waveform data) when an 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 has elapsed since the injection command was turned off.

FIG. 7 is a conceptual diagram illustrating the concept of the data directory hierarchy. 8 to 10 show monitor display screens, and FIG. 8 shows a monitor item setting screen.
FIG. 9 is a trend window screen displaying a plurality of trend data for each shot in chronological order, and FIG. 10 is a shot window screen displaying a desired arbitrary injection profile data of one shot in a waveform. FIG. 11 is a diagram for briefly explaining the connection between the measurement computer 10 and the recording monitor display computer 15 provided in the die casting machine.

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. FIG. 11 schematically shows the relationship between the die casting machine 1 and the recording monitor display computer 20 used in the present embodiment.

As shown in FIG. 11, a molding machine to be measured and monitored in the present embodiment is a die casting machine 1. The die casting machine 1 includes therein a sequencer 15 for controlling the movement of the machine, and a measuring computer. 10
Built-in.

The measuring computer 10 is provided with a measuring board (not shown) so that an injection stroke sensor, which requires high-speed sampling, a pressure pickup for measuring the head pressure of the injection hydraulic cylinder and the rod pressure, and the like can be connected. By connecting each sensor to this board, the measurement data can be transferred to the measurement computer 10.

In the present embodiment, the computer for measurement 10 and the sequencer 15 are connected so as to be able to perform serial communication.
5, the data on the molding cycle time (also referred to as cycle time) measured inside can be transferred to the measuring computer 10. However, if the data inside the sequencer 15 is not necessary, Of course, no connection is required.

When the injection characteristics of the die casting machine 1 are to be measured, a high sampling speed of 500 Hz to 1 kHz is required because the injection operation is very fast. It is very difficult at present to perform high-speed sampling as described above using the sequencer 15 provided for the above. Therefore, in the present embodiment, the configuration is such that the measurement computer 10 is provided in the die-casting machine so as to enable high-speed sampling as described above.

Further, since the load on the measuring computer 10 is very low, it is preferable to save resources by using it in common with, for example, real-time control of injection with high load.

The recording monitor display computer 20 is connected to the measurement computer 10 via a serial communication cable (cross cable) for storing data for each shot, and is sent from the measurement computer 10. Incoming data can be filed and stored.

Hereinafter, a description will be given of a mechanism in which the measuring computer 10 actually collects data from the die casting machine 1 and transfers the data to the recording monitor display computer 20 for transmission.

First, as a first step, a 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 to provide an environment that is easy for the driver to operate.

In the present embodiment, the measuring computer 10 provided in the molding machine always creates a table file in which the various measurement item names and the actual measurement objects correspond one-to-one while the molding machine is in operation. When a user selects 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.

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 stored in a recording medium of the recording monitor display computer in a file structure described in detail later. Record. In other words, the measurement software shown in this embodiment has a monitor setting item (measurement item selection) screen as shown in FIG. Can be set to record only the data necessary for

The file structure of the molding data recorded in the recording and display computer 10 and the timing of data transfer will be described below.

First, the structure of a data file created by the recording monitor display computer 20 will be described. In the present embodiment, the file created and used by the recording monitor display computer 20 stores a trend monitor value of only one numerical value in each shot cycle, such as a shot number, a time, and an injection condition set value for each shot. An injection profile data file (referred to as a waveform file) that stores a trend data file (sometimes referred to as a trend file) and injection profile data of each shot (temporal continuous injection stroke and pressure profiles during injection). ). Examples of the trend data include a molding time, an average value of an injection speed in one shot, and the like. Examples of the injection profile data include a change state of an injection pressure, an injection speed, and the like in one shot. And the like.

The two files are stored in a directory structure whose concept is shown in FIG. 7, and the trend. txt (trend file), shot. txt (injection profile data file) are stored in two files, and the tag of the trend item and the tag of the profile measurement item to be actually measured are recorded in a comma-delimited text format in the hard disk of the recording monitor display computer 20 (HDD and (May also be called).

In this embodiment, the HDD of the recording monitor display computer 20 is used as a recording medium. However, the recording medium applicable to the present invention is not limited to this, and may be an optical recording disk, a magnetic recording disk, or the like. Of course, it includes a commonly used electronic recording medium.

FIG. 1 shows a recording monitor display computer 20.
FIG. 3 is a diagram conceptually showing a file structure of trend data and an injection profile stored in an HDD of FIG. Various trend data including molding condition set value data for molding machines
In addition to being filed in one table, the injection profile data is filed for each shot at the time of molding in such a manner as to be enlarged and shown in FIGS.

The data stored in the recording monitor display computer 20 is 200 to 300 MB in capacity every day.
There is an amount of ybe / day. In order to access necessary data as quickly as possible in this huge amount of data, an index (table of contents or index) is required. In the present invention, a trend file under a daily directory is used as an index file. .

In the present embodiment, the trend data of the trend file, ShotDate for each shot (described in the second column from the left in the table of the trend data file shown in FIGS. 1 and 2) Are recorded in correspondence with each other. For example, as shown in FIG.
In association with 103701 (10:37:01), which is the Date, the file name of the injection profile data is set to 103701. csv. Note that the ShotDate in the present embodiment is data of each time when a shot is performed, and is data that does not overlap in the same molding machine on the same day.

In this embodiment, the ShotDate is used as the file structure as described above, as shown in FIG.
As a file name of the injection profile data, one item of the trend data file is recorded in association with the injection profile data, and the file of the trend data has a file structure that can be used as an index file of the injection profile data.

After recording and storing the molding data in the file structure as described above, the monitor screen of the recording monitor display computer 20 shows a trend graph screen in which various trend data are displayed in chronological order. FIG. 9 shows an example of a trend graph screen displaying trend data on the average value of the injection speed and trend data on the biscuit length, and displaying a part of various trend data in a time-series manner. In the present embodiment, a trend graph in which a part of the trend data is displayed in chronological order is shown as an example, but it is needless to say that all of the trend data may be displayed in chronological order.

Next, in the trend graph on the trend graph screen, a shot whose detailed data is desired to be confirmed is designated using a cursor or a mouse. At the same time as specifying the shot, the user specifies what data the user wants to check, and calls and displays the desired injection profile for any one shot. In the present embodiment, the injection profile data is graphically displayed on a screen (shot window) as shown in FIG.

More specifically, data required on a trend window as shown in FIG.
Based on the time, the trend item value, and the like, it is determined which shot information one wants to see, and the cursor is set to the position of the shot. 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 at the same time, the information of the injection condition set value and the trend data can be called instantaneously. it can. By pressing a file move button on the shot window, it is also possible to call up shot information before and after that time.

In other words, in this embodiment,
When the trend data in one shot is selected and designated using the trend graph, the injection profile data can be quickly searched and called based on the ShotDate recorded in the trend data.
That is, by efficiently searching for data using the trend data as an index, it is possible to immediately call up and display data related to a shot to be confirmed.

Unlike the related art, if the molding data is simply stored as a table file, the search requires time and effort. On the other hand, in the present embodiment, the shot to be confirmed can be quickly specified using the display screen.

Further, according to the present embodiment, an abnormal shot generated during continuous molding is easily confirmed on a visual display screen, and the abnormal shot is specified by using the trend graph screen to specify the abnormal shot. Can be grasped from the injection profile data, and the cause for the product failure can be efficiently investigated.

Next, the timing at which the computer for measurement 10 sends the two types of data to the computer 20 for recording monitor display during the molding cycle of the die casting machine will be described.

Generally, the waveform file of the injection profile data is a high-speed sampling, and includes six series of profile data of time elapsed since the injection command, stroke, speed, head pressure, rod pressure, and metal pressure. A capacity of ~ 300 kbytes is required.

As in this embodiment, the recording monitor display computer 20 and the measurement computer 10 are connected to the RS-23.
When connected by 2C serial communication, a transfer time of 20 to 30 seconds is required even if 115200 bps is used as the data transfer rate. In order to accommodate this transfer time in one cycle of the die casting process, immediately after the end of data sampling, It is desirable to start the transfer.

In this embodiment, as shown in FIG. 6, a timer measures an elapsed time from an injection start command (sometimes referred to as an injection command) and sets a timing at which the elapsed time reaches a preset time. , The transfer of the 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.

Regarding 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. Preferably.

The transfer start timing in this embodiment in which the molding data of the die-casting molding machine is recorded and displayed is the injection profile from 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 elapses as the sampling time, and the preset time is adjusted so that the transfer start timing is 1-2 seconds after the VP switching operation. .

Also, the injection profile data can be transferred at the transfer timing shown in FIG. 4 or FIG. 5, and the injection profile data can be transferred earlier than the transfer timing shown in FIG. However, there is a high possibility that the data will be transferred before the sampling is completed, and a part of the injection profile data may be lost. Therefore, it is used only when the accuracy of the injection profile data is not so important. be able to.

Next, the transfer start timing of the trend data will be described. Since the trend data includes data that is not determined until the end of the cycle, the rising or falling of the next cycle start signal is usually set as shown in FIG. It is preferable to wait and transfer. Although the transfer time of the trend data ends instantaneously due to the small amount of the trend data, it should be guaranteed that the data in the transfer area remains unchanged until the next cycle.

When the recording monitor display computer receives the trend data, it is recorded in a form in which the number of rows in the table file is increased by adding one new trend data row to the bottom of the current trend data file. Is saved. In this embodiment, transfer of trend data is started by a trend download command, and data is transferred by trend download.

Here, the production amount of a general die-casting device is standardly about 1000 shots / day, and when processing and storing such amount of data, it is easy to understand that it is managed on a daily basis. .

The data file of this embodiment is also managed in a directory for each day as shown in FIG. 7, and the casting date is used as the name of each directory, so that the data can be easily called later.

Further, one trend file (trend.csv) and an injection profile data file for each shot exist under the directory for each day.
The file name of the injection profile data file (sometimes referred to as the injection profile name) has the extension of the time when the injection start command is issued (6 digits in total of 2 hours, minutes and seconds).
csv). In addition, since data of the injection profile with this injection time is also provided for each shot in the trend file, each line of the trend file can correspond to each injection profile data file on a one-to-one basis. .

As shown in the directory structure of FIG. 7, in this embodiment, the recording monitor display computer 20 is a portable computer such as a notebook personal computer, which carries measurement software therein and is serially connected to the die casting machine 1 to be measured. The directory for each machine is lined directly under the data directory because it is designed to acquire data by using Further, a daily directory is created under each machine directory, in which actual measurement data as described above is stored.

Hereinafter, the features of the trend graph according to the present embodiment will be briefly described. Normally, the horizontal axis of a graph called a trend graph is a continuous number between shots, such as a shot number, and has little meaning in itself. If the time axis is set on the horizontal axis of the trend window, the operating status of the machine (whether there was downtime, whether the cycle was stable, etc.) ) Can be seen, which is a preferable configuration for confirming abnormal molding.

In the present embodiment, the horizontal axis selection area shown in FIG. 9 is used to provide a function for adjusting the number of data and time to be displayed on the trend graph. It can also be displayed as a number.

Further, in the present embodiment, a marking system for a product is separately introduced, and a one-to-one correspondence between the marking of the product and the data measured on the trend graph screen.
It is also possible to take measures and to establish excellent reliability in a molding system for products that require higher reliability in the future.

[0054]

According to the present invention, the condition set value of the molding process is
Also, recording and storing molding data such as measured values on a recording medium,
Create a trend data file and injection profile data file, a part of the saved trend data,
Alternatively, by displaying all of the shots on the screen, it is possible to quickly specify an arbitrary shot made in the past by using the displayed trend data. Further, by calling the injection profile data file using the trend file recording the trend data as an index file, it is possible to access a large amount of accumulated data at high speed.

According to the present invention, for the above-described reasons, a defectively formed product found in a post-forming step (for example, a stage of heat treatment or cutting) is formed under any forming conditions, and At this time, it is possible to easily confirm various conditions such as how the molding machine has been operated and how the operating environment of the machine has been, so that the cause of the molding failure can be quickly checked.

Further, according to the present invention, the elapsed time from the injection start command is measured by a timer, and the measurement computer sends the recording monitor display computer to the recording monitor display computer in time with the end of the sampling of the injection profile data. By starting the transfer of the injection profile data, this transfer time can be accommodated in 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 the 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 chart when waveform data is transferred when an injection command is turned off according to the embodiment of the present invention.

FIG. 5 is a timing chart when waveform data is transferred by VP switching according to the embodiment of the present invention.

FIG. 6 is a timing chart in a case where waveform data is transferred after a designated time has elapsed since the injection command was cut off according to the embodiment of the present invention.

FIG. 7 is a conceptual diagram illustrating the 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 pieces of trend data for each shot according to the embodiment of the present invention.

FIG. 10 is a diagram illustrating a desired one according to the embodiment of the present invention.
9 is a shot window screen that displays injection profile data of a shot in a waveform.

FIG. 11 is a diagram illustrating a connection between a measurement computer and a recording monitor display computer provided in the die casting machine according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die casting machine 10 Computer for measurement 15 Sequencer 20 Computer for recording monitor display

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuki Hiraizumi 1980, Kogushi-ji, Ube-shi, Ube-shi, Ube-shi, Yamaguchi Ube Machinery Co., Ltd. Ube Machinery Works F-term (reference) AA06 CC08 DD03 EE06 FF03 FF08

Claims (5)

[Claims] The present invention relates to a method and a method for making a file of various trend data including molding condition set value data of a molding machine in a single table, a file of injection profile data for each shot, and a file name of the injection profile data in the trend data. By associating with one item of the file, the trend data file is recorded on a recording medium as recording data having a file structure that can be used as an index file, and based on the recording data, at least the emission profile data and various trend data are recorded. A method for recording and displaying molding data, wherein one is called and displayed. 2. A desired one shot is designated by using a trend graph screen displaying various trend data in a time series based on the recording data, so that injection profile data in the one shot is called. 2. The method for recording and displaying molding data according to claim 1, wherein the display is performed. 3. A measurement computer provided in the molding machine creates a table file in which each measurement item name and actual measurement target correspond one-to-one, and records any desired measurement item among the various measurement items. A method for recording and displaying molded data, wherein only data of the selected measurement item is recorded on a recording medium of the recording monitor display computer and displayed by being selected by a monitor display computer. 4. A timer measures an elapsed time from an injection start command, and transfers injection profile data from the measurement computer to the recording monitor display computer at a timing when the elapsed time becomes a preset time. The method for recording and displaying molding data according to claim 3, wherein the method is started. 5. The transfer of trend data of a previous shot from the measurement computer to the recording monitor display computer is started immediately after the end of the molding cycle of the molding machine or at the same time as the start of the next molding cycle. 5. The method of recording and displaying molding data according to claim 4, wherein: