JP2991264B2 - Method of storing graphic image data in molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for storing graphic image data in a molding machine such as a plastic injection molding machine, a rubber injection molding machine or a die casting machine. The present invention relates to a method of storing graphic image data in a molding machine having a display device capable of displaying a graphic image as a graphic image.

[0002]

2. Description of the Related Art A recent microcomputer-controlled injection molding machine is provided with a display device such as a color CRT display and a color LCD display. The display device sets or confirms molding operation conditions for automatic molding operation. Display mode image for displaying various setting conditions for performing automatic inspection, various actual measurement data display mode images for displaying actual measurement data of many measurement items during automatic molding operation, A periodic inspection mode image for prompting, an alarm mode image for recognizing this when an abnormality occurs, and the like are displayed.

[0003] Among the various display mode images described above, the image displayed in the actual measurement data display mode is conventionally often shown by listing numbers, in which, for example, the operating characteristics such as the injection stroke can be grasped at a glance. There was a problem that it was difficult. In view of this point, recently, machines that display actual measurement data of each stroke such as an injection stroke as a graphic image on a display screen have been circulated, and the operating state is displayed using the displayed pressure and speed graphic data. It is widely used for grasping and analyzing data.

[0004]

However, in a conventional machine which displays driving data as a graphic image, the capacity of a buffer memory under the control of a central processing unit which controls the overall control built in the machine is limited. For this reason, the buffer memory can store only the actually measured values of the operation data for one shot, or at most only the actually measured values of the operation data for several shots. For this reason,
The contents of the buffer memory must always be rewritten and updated with the latest shot operation data.Therefore, the graphic image data displayed based on the actual measurement data in this buffer memory also displays the latest shot data. Was common.

However, since what is displayed is the graphic data of the latest shot, the graphic data of the latest shot is compared with the graphic data of the past to obtain analysis data for reflecting it on the non-defective molding. That is, for example, even if an attempt is made to compare the graphic data of the current shot with the graphic data of shots several tens of shots earlier, the data of the shot several tens of shots before is not left in the memory. There was a problem. For this reason, when a defect occurs during the continuous automatic molding operation, there is no remaining data at the time of non-defective molding, and the graphic data at the time of defective molding and the graphic data at the time of non-defective molding are compared on the same screen. I couldn't do that. Of course, it is conceivable to print out and save the graphic data at the time of molding non-defective products, and compare the data on the paper with the data on the display screen, but it is not possible to compare both at a glance with good visibility. It was difficult.

[0006] The present invention has been made in view of the above points,
The purpose of the analysis is to analyze the operating conditions by enabling the actual measurement data of the past shot (at the time of the past molding operation) to be called as a graphic image on the display device of the machine at any time desired by the operator. It is an object of the present invention to provide a method of storing graphic image data in a convenient molding machine having excellent discrimination.

[0007]

Since the present invention SUMMARY OF THE INVENTION The To achieve the above object, a central processing unit for controlling each section of the machine on the basis of the operating condition values set and the measurement information from the sensors, in operation Measured data for each operating condition
Buffer memory that captures and updates / stores data for each packet
And a graphic image on a display device attached to the machine
To store image data for one screen to display etc.
Frame buffer and a number of shots attached to the machine.
Bets measured data; and a memory capable of storing means, before
Serial central processing unit, as well to execute the series of molding operation stroke according to a predetermined molding operation program, the measured data of each operating condition during operation, are incorporated into the bar <br/> Ffamemori every shot This was updated and stored, also the central processing unit according to an instruction of the operator, in the transfers measured data taken in the buffer memory to the frame buffer, the displayable on a display device as a graphic image and the molding machine , Graphic painting
In the method for storing image data, the actual measurement data stored in the buffer memory may be arbitrarily changed according to an instruction of an operator.
At the point of time, the data can be transferred to and stored in the memory means, and any of the data stored in the memory means can be transferred .
The data can be appropriately converted and transferred to the frame buffer at any time according to the instruction of the operator .

[0008]

The central processing unit, which controls the entire machine, converts all the actually measured data of the preset monitor items during automatic operation into, for example, the actually measured pressure data,
The data is taken into the buffer memory in the form of measured speed data and the like, and is constantly rewritten and updated. In this state, when the operator instructs the display of one of the actually measured graphic data display mode images desired by the operator, for example, the graphic image of the injection stroke, by a key operation, the central processing unit performs the processing in the buffer memory based on the predetermined image generation program. The predetermined data is converted into graph data (coordinate data), and image data such as numerical values, characters, and symbols necessary for display in the graphic display mode, and image data such as graph scale lines are generated, and these are displayed for one screen. And transfers it to the frame buffer. The graphic image data stored in the frame buffer is output to, for example, a color CRT display attached to the machine, and is displayed as a graphic image of the injection pressure and the injection speed.

Now, when the operator desires to save the actual measurement data of the current shot, this is notified to the central processing unit by a key operation, and in response, the central processing unit is currently held in the buffer memory. The measured data is transferred to and stored in a memory means (large-capacity memory) such as a magnetic disk, an optical disk, an IC card, and an EEPROM capable of storing a large number of shots of data. At this time, ID data (for example,
Machine name, product name, date of transfer, data indicating hour, minute, etc.) are automatically added. In this way, the memory means sequentially stores the actual measurement data desired by the operator.

When a graphic display of past measured data in the memory means (mass memory) is desired, the operator instructs the central processing unit to call up the desired measured data by key operation, whereby the central processing unit causes the memory means to read the data. , And converts the data into graph data (coordinate data), and generates image data such as numeric, character, and symbol image data and graph scale lines required for display in the graphic display mode. Then, these are combined with image data for one screen, transferred to a frame buffer, and displayed as a graphic image on a color CRT display. Also, at this time, if the combined display of the graphic data of the latest shot and the called past graphic data is instructed, the central processing unit combines the graphic data of the latest shot and the called past graphic data to generate 1 The image data for the screen is created and transferred to the frame buffer for display.

In this way, the actual measurement data of the past shot can be called up as a graphic image on the display of the machine at any time desired by the operator, and for example, a defect occurs during the continuous automatic molding operation. In this case, it is possible to call up the data during non-defective molding and compare the graphic data during defective molding and the graphic data during non-defective molding on the same screen.
Therefore, it is very useful for elucidating the causal relationship between the operating condition and the cause of the failure and for analyzing the operating condition, and it is possible to reflect the result in the molding of a good product.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to one embodiment shown in FIGS. FIG. 1 is a diagram schematically illustrating functional blocks of a control system of the injection molding machine according to the present embodiment. In FIG. 1, reference numeral 1 denotes a microcomputer (microcomputer) that controls the operation and display of the entire machine (injection molding machine), 2 denotes a sensor group including a large number of sensors provided in each part of the machine, and 3 denotes a machine. A driver group composed of a large number of driver circuits for driving and controlling a large number of drive sources provided in each section of the machine; 4 is a key input device provided on the front portion of the machine; , For example, a color CRT display, a color LCD
And the like. Reference numeral 6 denotes a memory means (large-capacity memory) externally or internally provided in the microcomputer 1.
Magnetic disk (floppy disk or hard disk), optical disk, magneto-optical disk, IC card, EE
It is composed of an appropriate memory such as a PROM, a RAM, a magnetic bubble memory, etc., and can store measured data for many shots as described later. When a non-volatile recording medium that is removable from the outside is adopted as the memory means 6,
This is convenient in terms of portability and storability.

The microcomputer 1 shown in FIG.
Control of the entire molding process such as injection operation, mold opening / closing operation, and eject operation, calculation / storage processing of measured data, calculation / determination processing such as non-defective / defective product determination processing, abnormality determination processing, etc .; Various processes such as output image display control processing are executed. This microcomputer 1 actually has various I
It is configured with a / O interface, a ROM, a RAM, a CPU, and the like, and executes various processes by various programs created in advance. In the present embodiment, the molding condition setting storage unit 10, the molding process control unit 11 , An actual measurement value storage unit 12, a display processing unit 13, etc.
The following is described.

Various operating condition values input by the key input device 4 are stored in the molding condition setting storage unit 10 in a rewritable form. The operation condition values include, for example, the tightening force, the electric power value, the relationship between the screw position and the screw rotation speed during the charge stroke, the screw retreat speed, and the back pressure, the suck back control condition, and the injection start point (position). Injection speed conditions and injection pressure conditions up to the dwell pressure switching point (position), secondary injection pressure (dwell pressure) conditions from the dwell pressure switching time to the dwell end time, temperature of each part of the heating cylinder, mold closing (mold closing) ) Stroke and speed control conditions, mold clamping force, mold opening stroke and speed control conditions, eject control conditions, control conditions for automatic product unloading machine, and the like.

The molding process control unit 11 is configured to control the sensor group 2 provided in each unit of the machine based on a molding process control program created in advance and setting condition values stored in a molding condition setting storage unit 10. The driver group 3 (motor) is referred to by referring to data from the actually measured value storage unit 12 and time measurement information from a clock incorporated therein, which captures measurement information from a position sensor, a pressure sensor, a temperature sensor, and the like in real time. A corresponding driving source is driven and controlled via a driver, a hydraulic cylinder driver, a heater driver, and the like, and a series of molding steps are executed. The sensors included in the sensor group 3 are specifically described as ACC.
(Accumulator) Charge pressure detection sensor, screw stroke detection sensor, screw rotation speed detection sensor, injection pressure and back pressure detection sensor, mold opening / closing stroke detection sensor, mold clamping pressure detection sensor, mold pressure detection sensor, eject ejection / return stroke detection Sensors, eject cylinder pressure detection sensors, operation confirmation sensors for automatic product take-out machines, temperature sensors for various parts, power value detection sensors, and the like.

The actual measurement value storage unit 12 receives all actual measurement data of preset monitor items of the latest shot during continuous automatic operation, and constantly rewrites and updates the actual operation data of the latest shot. Holding this. If there is room in the capacity of the measured value storage unit 12, the measured data for several consecutive shots are loaded and the FI
Rewriting and updating may be performed in the FO format. The monitored items to be captured include a time monitoring item, a position monitoring item, a rotation speed monitoring item, a speed monitoring item, a pressure monitoring item, a temperature monitoring item, a power monitoring item, and the like. Are almost overlapped.

The display processing section 13 displays display image data in a designated display mode based on a display image creation / control program created in advance by a command to call a display image in a mode desired by the operator via the key input device 4. Create That is, when a call instruction of a predetermined display image arrives by the operator, a data conversion processing unit (not shown) in the display processing unit 13 is stored in the molding condition setting storage unit 10 or the measured value storage unit 12 as necessary. Data to be used for displaying the display mode image is extracted from the information, and the data is converted into a form corresponding to the specified display mode of the display mode image. For example, if the designated display mode is a graphic image of a certain process, the extracted data is converted into graph data (coordinate data) to obtain line-drawing-processed image data. A scale generation program generates graph scale image data and scale numerical image data at a predetermined magnification, further converts predetermined data into numerical image data, and synthesizes these into image data for one screen, thereby forming a frame buffer 14. To be stored. The image data temporarily stored in the frame buffer 14 is sent to the display device 5 according to a command from the display processing unit 13, and the graphic image data is displayed on the display screen of the display device 5.

FIG. 2 is a diagram showing an example of a hardware configuration for realizing the functions of the microcomputer 1 of FIG. In the figure, reference numeral 20 denotes a CPU that controls the entire system.
(Central processing unit), 21 is a ROM in which a main control program and fixed data are stored, 22 is a RAM in which various data and flags are read and written, and a predetermined area of the RAM 22 is used as the measured value storage unit in FIG. (Buffer memory) 12 and a frame buffer 14. Also, 2
Reference numeral 3 denotes an I / O interface that controls input / output with the outside, and 24 denotes a CRT that controls display of a CRT display.
The controller 25 is a CRT interface such as an S / P converter that converts the data in the frame buffer 14 to a CRT (display device) 5 by, for example, serial-parallel conversion and outputs the converted data. In FIG. 2, components corresponding to those in FIG. 1 are denoted by the same reference numerals.

Next, the operation of the present embodiment having the above configuration will be described. As described above, the actually measured value storage unit (buffer memory) 12 stores all the actually measured data of the preset monitor items during the automatic operation for each shot, such as the actually measured pressure data and the actually measured speed data. It is imported in the form and is constantly rewritten and updated. In this state, when the operator instructs to display one of the actually measured graphic data display mode images desired by the operator, for example, the graphic image of the injection stroke, by key operation of the key input device 4, the display processing unit 13 (display under the control of the CPU 20). The processing execution base) converts predetermined data in the actual measurement value storage unit (buffer memory) 12 into graph data (coordinate data) based on a predetermined image generation program, and is necessary for display in the graphic display mode. It generates image data of numerical values, characters, and symbols, and image data such as graph scale lines, synthesizes these with image data for one screen, and transfers them to the frame buffer 14. The graphic image data temporarily stored in the frame buffer 14 is output to the display device 5 and displayed as a graphic image of the injection pressure and the injection speed.

FIG. 3 shows an example of an injection stroke graphic image of the latest molding cycle displayed on the display device 5. In the figure, the right half of the horizontal axis increases the position of the screw (the forward stroke of the screw in the primary injection stroke from the right end of the weighing completion point to the center pressure switching point) with the screw advance limit set to 0 and increases to the right. In the left half of the horizontal axis, the time (the pressure-holding stroke time from the time of the pressure-holding switching to the time of the completion of the pressure-holding) is shown by increasing the pressure-holding switching point to 0 and increasing to the left. Are shown below. Also, the vertical axis shows the injection pressure on the left side in the figure, the numerical value indicating the scale of this is shown on the left side of the figure, the right side shows the injection speed in the figure on the vertical axis, Numerical values indicating the scale are shown on the right side of FIG. In the same figure, reference numeral 31 denotes measured injection speed data, reference numeral 32 denotes measured injection pressure data, reference numeral 33 denotes injection speed setting data, and reference numeral 34 denotes injection pressure setting data.

If the operator wishes to save the actual measurement data of the current shot during the automatic molding operation, the operator notifies the CPU 20 (microcomputer 1) of this fact by operating the key input device 4, and the CPU 20 receives the notification. Then, the actually measured data currently held in the actually measured value storage (buffer memory) 12 is transferred to the memory means (large-capacity memory) 6 and stored therein. At this time, the data to be transferred includes C
ID data (for example, data indicating the date, hour, and minute of the transfer of the machine name and the product name, etc.) is automatically added by a command from the PU 20 (or the ID data is added by an operator's key input). In this way, the measured data at any time desired by the operator is sequentially stored in the memory means (large capacity memory) 6. Then, even if the product (die) is changed, the contents in the memory means 6 are preserved.

When a graphic display of past measured data in the memory means (large-capacity memory) 6 is desired, the operator calls a desired measured data by a key operation to a CP.
U20 is instructed, whereby the CPU 20 calls the designated data from the memory means 6 and displays it in the display processing unit 13 (a display processing execution base under the control of the CPU 20).
Converts to graph data (coordinate data) with
Image data such as numerical values, characters, and symbols necessary for display in the graphic display mode, and image data such as graph scale lines are generated, combined with image data for one screen, transferred to the frame buffer 14, and displayed. It is displayed on the device 5 as a graphic image. At this time, if an instruction is given to combine and display the graphic data of the latest shot and the past graphic data called, the CPU 2
In response to the command of 0, the display processing unit 13 (the display processing execution base under the control of the CPU 20) combines the graphic data of the latest shot with the past graphic data called to create image data for one screen. Is transferred to the frame buffer 14 and displayed.

In this way, the actual measurement data of the past shot can be called out as a graphic image on the display device 5 of the machine at any time desired by the operator. When this occurs, it is possible to call up the data during non-defective molding and compare the graphic data during defective molding and the graphic data during non-defective molding on the same screen. Therefore, it is very useful for elucidating the causal relationship between the operating condition and the cause of the failure and for analyzing the operating condition, and it is possible to reflect the result in the molding of a good product.

[0024]

As described above, according to the present invention, the machine
A memo that can store the measured data of many attached shots
Measured data of the latest shot desired by the operator
Can be specified arbitrarily and stored in real time.
Monitoring machine operation status and product (molded product) quality
The operator who is watching can easily select the desired system without losing the timing.
Can store the actual measurement data of
Any measured data for the same product can be stored in the memory
Can be stored for multiple shots
It is possible to hold abundant illumination data. Also,
The data desired by the operator among the actual measurement data of the past shot (at the time of the past molding operation) stored in the memory means.
The chromatography data, callable and I on the display device of the machine at any time to a desired operator as a graphic image
You. In general, it is possible to provide a method for storing graphic image data in an easy-to-use molding machine which is excellent in analyzing and discriminating operating conditions, and its value is great.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing simplified functional blocks of a control system of an injection molding machine according to one embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a hardware configuration for realizing the functions of FIG. 1;

FIG. 3 is an explanatory diagram showing an example of a graphic image of an ejection process according to one embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 microcomputer (microcomputer) 2 sensor group 3 driver group 4 key input device 5 display device 6 memory means (large capacity memory) 10 molding condition setting storage unit 11 molding process control unit 12 actual measurement value storage unit (buffer memory) 13 display processing Unit 14 frame buffer 20 CPU (central processing unit) 21 ROM 22 RAM

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B29C 45/76-45/80 B29C 45/17 B22D 17/32 B23Q 17/00

Claims (2)

(57) [Claims] A central processing unit for controlling each part of the machine based on each set operation condition value and measurement information from each sensor ; and one shot data of actual measurement data of each operation condition during operation.
Buffer memory that captures and updates / stores data for each packet
And a graphic image on a display device attached to the machine
To store image data for one screen to display etc.
Frame buffer and a number of shots attached to the machine.
; And a capital of the measured data can be stored a memory means, said central processing unit, as well to execute the series of molding operation stroke according to a predetermined molding operation program, the measured data of each operation conditions during operation, wherein every shot <br/> to be incorporated into the buffer memory is updated and stores it,
Also, the central processing unit according to an instruction of the operator transfers the measured data taken in the buffer memory to the frame <br/> Mubaffa in molding machine can be displayed as a graphic image on the display device, the buffer the actual data stored in the memory, the operating
The data can be transferred to and stored in the memory means at any time in accordance with the instruction of the data, and any of the data stored in the memory means can be transferred by the instruction of the operator.
A method of storing graphic image data in a molding machine, wherein the image data can be transferred to the frame buffer by performing an appropriate conversion process at any time . 2. The graphic image data of a molding machine according to claim 1, wherein the memory means capable of storing the data for a large number of shots is a nonvolatile storage medium which is detachable from the outside. Storage method.