JPH0542570A - Numerical reading method on graphic image in injection molding machine - Google Patents

Abstract

(57) [Summary] [Purpose] Reading values from the graph on the display screen
To provide a numerical reading method on a graphic image in an injection molding machine that can be quickly and accurately performed. [Structure] Designate a desired graph from the displayed graphs of multiple items, and use the crosshair cursor that can be moved in parallel on the display screen with the intersection point always on the specified graph to operate on the graph. Two points are designated, and the coordinate value of the designated two points and the value indicating the distance between the two points in the X and Y axis directions are displayed on the display screen in which the graphic image is displayed in a window.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical image reading method on a graphic image in an injection molding machine, and more particularly to a microcomputer (hereinafter referred to as a microcomputer) for capturing and storing operation data during continuous operation and control of the microcomputer. The present invention relates to a numerical image reading method on a graphic image in an injection molding machine equipped with a display device capable of displaying various mode images underneath.

[0002]

2. Description of the Related Art Recent microcomputer-controlled injection molding machines are equipped with a display device such as a color CRT display or a color LCD display, and this display device sets or confirms molding operation conditions for automatic molding operation. Various setting condition display mode images for displaying, various actual measurement data display mode images for displaying actual measurement data of many measurement items during automatic molding operation, automatic inspection items are displayed at regular inspection time A regular inspection mode image for prompting, an alarm mode image for recognizing this when an abnormality occurs, and the like are displayed.

By the way, conventionally, the image displayed in the above-mentioned measured data display mode is often shown by enumerating numbers, which makes it difficult to grasp the driving characteristics such as the injection stroke at a glance. .. In view of this point, the applicant of the present application has developed a machine (injection molding machine) having a function of displaying measured data of the injection stroke together with set values in a graphic image on a display screen, and proposed it as Japanese Patent Laid-Open No. 26726/1990. ..

[0004]

When the measured data of velocity and pressure and the setting data can be displayed graphically as in the above-mentioned prior application, the change characteristics of velocity and pressure during the injection stroke can be grasped at a glance and monitored. -The distinctiveness is greatly improved. However, in the conventional injection molding machine equipped with this kind of graphic image display function, attention has not been paid so much to reading the data of the graph directly and directly on the display screen. It was difficult to read the value of any point on the displayed graph and the distance between any two points on the graph in the X and Y axis directions quickly and accurately. For this reason, for example, conventionally, the graphic image data is once printed out, then the distance is accurately measured with a ruler, etc., and this is converted by a calculator or the like according to the scale value of the scale of the graphic image, The distance between any two points, that is, the stroke, time, etc. in the X-axis direction, and the velocity, pressure, etc. in the Y-axis direction have to be obtained.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a numerical image reading method on a graphic image in an injection molding machine, which enables quick and accurate reading of values from a graph on a display screen.

[0006]

In order to achieve the above-mentioned object, the present invention comprises a microcomputer for driving and controlling each part of the machine based on each set operating condition value and the measurement information from each sensor. The microcomputer executes a series of molding operation strokes such as a charging stroke, a mold opening / closing stroke, an injection stroke, and an ejection stroke according to a predetermined molding operation program, and also acquires and stores actual measurement data of each operating condition during the operation. In addition, the microcomputer converts the set operating condition value or the fetched actual measurement data according to an operator's instruction, and displays a graphic image of the setting data or actual measurement data on a display device attached to the machine. It is displayed in the numerical reading method on the graphic image in the injection molding machine. A desired graph is specified from one or more graphs, and a crosshair cursor that can be moved in parallel on the display screen with its intersection always placed on the specified graph is used to select an arbitrary graph on the specified graph. Two
A point is designated, and the coordinate value of the designated two points and the value indicating the distance between the two points in the X and Y axis directions are displayed on the display screen on which the graphic image is displayed. ..

[0007]

[Function] The microcomputer that controls the entire machine can capture all the actual measurement data of preset monitor items during automatic operation over a continuous predetermined number of shots and rewrite this into a predetermined storage area. Store.
Then, 1 of the actual measurement data display image desired by the operator
When one is called and selected, the display processing unit in the microcomputer creates a graph scale grid in the graph display frame area and a scale value based on a predetermined image generation program, and creates a graph display frame area. The measured data graph is drawn and synthesized in the inside, and this is displayed on a display device such as a color CRT display of the machine. In this state, when the operator desires measurement by the crosshair scale and sets the crosshair cursor ON mode, the display processing unit displays the current measurement data display mode from the update data display mode that is updated and displayed as the shot progresses. The mode is changed to a mode for fixing the graphic image being displayed, the updating display of the graph is stopped, and two cross hair cursors composed of vertical and horizontal cross-shaped thin lines are displayed on the display screen. Next, when the operator specifies one of the graphs of multiple items displayed on the display screen, the crosshair cursor moves on the display screen with the intersection always on this specified graph in the operation direction. In this state, the operator uses the crosshair cursor movement keys to specify any two points on the graph, and after that, if data display is desired with the data display key, the specified two points are displayed. Coordinate values and X, Y between two points
A value indicating the axial distance is displayed on the display screen in a window together with a unit symbol indicating the unit.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a simplified block diagram of a control system of an injection molding machine according to this embodiment. In FIG. 1, 1 is a microcomputer that controls the operation and display control of the entire machine (injection molding machine), 2 is a sensor group including a large number of sensors provided in each part of the machine, and 3 is each part of the machine. A driver group composed of a large number of driver circuits for driving and controlling a large number of drive sources provided, 4 is a key input device arranged on the front face of the machine, and 5 is a device arranged adjacent to the key input device. The display device is, for example, a color CRT display, a color LCD or the like.

The microcomputer 1 shown in FIG.
Control of the entire molding process such as injection operation, mold opening / closing operation, eject operation, calculation / storing processing of measured data, calculation processing / determination processing such as non-defective / defective product determination processing, abnormality determination processing, or the display device 5 Various processes such as output image display control process are executed. This microcomputer 1 actually has various I
It is configured with an I / O interface, a ROM, a RAM, a CPU, and the like, and executes various processes by various programs created in advance. In this embodiment, the molding condition setting storage unit 11 and the molding process control unit 12 are also included. The following description will be made assuming that the measurement value storage unit 13, the display processing unit 14, the crosshair cursor information calculation processing unit 15 and the like are provided. The display processing unit 14 includes the data conversion processing unit 1
6, a graph scale generation unit 17, a display fixed data storage unit 18, a display image data generation unit 19 and the like are provided.

The molding condition setting storage unit 11 stores various operating condition values input by the key input device 4 in a rewritable form. The operating condition values include, for example, tightening force, electric power value, relationship between screw position and screw rotation speed during charge stroke, screw retreat speed, and back pressure, suck back control condition, injection start point (position), Injection speed conditions and injection pressure conditions up to the holding pressure switching point (position), secondary injection pressure (holding pressure) conditions from the holding pressure switching time to the holding pressure end time, band heater temperature of each part, mold closing (mold clamping) ) Stroke and speed control conditions and mold clamping force, mold opening stroke and speed control conditions, eject control conditions, control conditions for the automatic product take-out machine, and the like.

The molding process control unit 12 is based on a molding process control program created in advance and setting condition values stored in the molding condition setting storage unit 11, and the sensor group 2 arranged in each unit of the machine. Through the driver group 3 (motor driver, hydraulic cylinder driver, heater driver, etc.) while referring to measurement information from (position sensor, pressure sensor, temperature sensor, etc.) and timing information from a clock built in itself. The corresponding drive source is drive-controlled to execute a series of molding steps. Specific examples of the sensors included in the sensor group 3 include an ACC (accumulator) charge pressure detection sensor, a screw stroke detection sensor, a screw rotation speed detection sensor, an injection pressure / back pressure detection sensor, and a mold opening / closing stroke detection sensor. , A mold clamping pressure detection sensor, a mold internal pressure detection sensor, an eject protrusion / return stroke detection sensor, an eject cylinder pressure detection sensor, an operation confirmation sensor of a product automatic take-out machine, a temperature sensor of each part, a power value detection sensor, and the like.

All the actual measurement data of preset monitor items during continuous automatic operation are stored in the actual measurement value storage unit 13 over a predetermined number of continuous shots. The monitor items that are taken in include time monitoring items, position monitoring items, rotation speed monitoring items, speed monitoring items, pressure monitoring items, temperature monitoring items, power monitoring items, and other important items of the molding operation condition setting items described above. Are almost overlapping. The speed actual measurement value is calculated in real time by an arithmetic processing unit (not shown) in the microcomputer 1 based on the measurement information and the clock information from the above-mentioned stroke (position) detection sensors, and this is the actual measurement value storage unit 13. Is stored in a predetermined area.

The display processing unit 14 displays the display image data in the designated display mode based on the display image creation / control program created in advance by the operator's command to call the display image in the desired mode from the key input device 4. To create. That is, when a predetermined display image calling command from the operator arrives, the data conversion processing unit 16 of the display processing unit 14 uses the information stored in the molding condition setting storage unit 11 and the measured value storage unit 13 as necessary. Data for use in displaying the display mode image is extracted, and is converted into a form corresponding to the specified display mode of the display mode image. For example, if the specified display mode is a graphic image of a certain stroke,
The extracted data is converted into line-drawn image data, and if the designated display mode is an operation condition setting image in a certain process, the extracted data is converted into numerical image data. When the designated display mode is a graphic image, the graph scale generation unit 17 generates a graph scale (graph) created in advance based on the contents of the data conversion processing unit 16 described above or the scale instruction of the operator. A graduation) generation program generates graph graduation grid image data and graduation numerical image data at a predetermined magnification.

The generation processing data of the data conversion processing unit 16 and the graph scale generation unit 17 are taken into the display image data generation unit 19, and the graph scale is placed at a predetermined position on the graph scale grid image data of a predetermined magnification. The graphic image data is converted and converted into an enlargement / reduction ratio according to, and the graphic image data is overwritten and combined. In addition, a large number of fixed data for mode images, such as characters, symbols, graphic figures, ruled line data, which are created and stored in advance in the display fixed data storage unit 18, are used for displaying the display mode image. Data is extracted,
This is taken in by the display image data generation unit 19 and is similarly synthesized as image data for display. by this,
The display image data generation unit 19 has a predetermined arrangement of graph scales, scale numbers, line drawing graphs, mode display characters, unit symbols, item display characters, etc. for a specified graphic display image.
Image data that has been combined and to which color classification information and the like have been added is created, and this is rewritably held. If the designated display mode is not a graphic image, the image data for the designated designated display image is also displayed by the data conversion processing unit 16 and the contents of the display fixed data storage unit 18. Generated and stored at 19.

Further, when the crosshair cursor ON mode, which will be described later, is selected, the crosshair cursor information calculation processing section 15 uses the information from the display processing section 14 to scale (enlarge / enlarge) the currently displayed graphic image. In addition to recognizing (reduction ratio), the graph item designated by the operator's key input and the current intersection position of the crosshair cursor are recognized by information from an input information processing unit (not shown) or information from the display processing unit 14. It has become. Then, after the operator designates two points on the desired graph with two cross cursors,
When the data display is instructed, the crosshair cursor information calculation processing unit 15 calculates the coordinate values of the two points and the distances between the two points in the X and Y axis directions, and the data is processed by the data conversion processing unit 16 of the display processing unit 14. To be converted to image data.
On the other hand, when the (measurement) data display command arrives, the display processing unit 14 enters the measurement result window image display mode, and the data necessary for displaying the window image from the display fixed data storage unit 18, that is, the image frame information, Fixed data such as unit symbols and image patterns are extracted and sent to the display image data generation unit 19, and the calculation data of the crosshair cursor information calculation processing unit 15 converted by the data conversion processing unit 16 is also included. It is sent to the display image data generation unit 19. As a result, the display image data generation unit 19 generates window image data and combines it with the currently displayed graphic image data.

Then, the above-mentioned display image data generation unit 1
The image data of 9 is transferred to a frame buffer (not shown) and temporarily stored therein, and the output of this frame buffer is sent to the display device 5 in response to a command from the display processing unit 14, and is displayed on the display screen of the display device 5. The image data in the predetermined mode will be displayed.

FIG. 2 shows the charge process graphic image of the latest molding cycle which is called up on the display screen of the display device 5 when the operator designates the display of one of the measured data graphic images, for example, the measured graphic image of the charge process. ing. In the figure, the horizontal axis indicates the screw position (screw retreat stroke), and the numerical value indicating the scale thereof is shown on the lower side. In addition, the vertical axis represents the back pressure on the left side of the figure, and the numerical value indicating the scale thereof is shown on the left side of the figure.The right side of the vertical axis figure indicates the screw rotation speed and the screw The reverse speed is shown, and the numerical values showing these scales are respectively shown on the right side of the figure in a two-stage stack (upper speed and lower speed). Further, in the figure, 21 is the measured data of the back pressure, 22 is the measured data of the screw rotation speed, and 23
Indicates the measured data of the screw retreat speed, 24 indicates the back pressure setting data, and 25 indicates the screw rotation speed setting data. Here, in the display screen of FIG. 2, the graph characteristic lines regarding pressure, rotation speed, and speed are displayed in different colors, and
Each scale number, unit, and character are displayed in the same color according to this color classification, and the operator can recognize at a glance which graph characteristic line represents what. (Note that this color division is the same in other graphic image modes).

The lower side of the display screen of FIG. 2 shows the present operation function and the present display assigned to the function key (not shown) in the key input device 4 displayed in the graphic image display state. Shows the mode,
In the initial state, "Cross hair ON", "1 time / overlap" indicates "= 1 time writing", and "Scale mode" indicates "= Auto". In this state, the cross hair cursor mode is OFF. , The cross hair cursor does not appear on the display screen, and in this initial state, the display processing unit 14 of the microcomputer 1 draws the measured graphic data only for the latest molding 1 cycle, and the scale of the graph is displayed. Graph scale generation unit 17 of display processing unit 14
It was created by the one automatically set. Then, when the function key corresponding to "once / overlap" is pushed in this state, the display of "= write once" is switched to "= overwrite", and the display processing unit 14 enters the overwrite mode,
The measured graphic data is displayed by being overwritten over a plurality of molding cycles including the latest molding cycle. When the function key corresponding to the “scale mode” is pushed in the state of FIG. 2, the display of “= automatic” is switched to “= set”, and the display processing unit 14 enters the scale setting accepting state. In this state, the operator By setting the scale, the scale is generated at an enlargement / reduction rate according to the scale instructed by the operator, and the actual measurement graph and the setting graph are drawn accordingly.

Here, in the state shown in FIG.
If you push the function key corresponding to "N",
The microcomputer 1 (display processing unit 14) has a crosshair cursor O
The N mode is set, and the measurement data display mode, which was updated and displayed as the shot progresses, is switched to a mode in which the currently displayed graphic image is fixed, and the graph update display is stopped. As shown in FIG. 3, while displaying two cross hair cursors 31 and 32, which are thin lines in the shape of vertical and horizontal crosses, on the display screen,
The function key function display on the lower side of the display screen is switched as shown in FIG. This crosshair cursor 31,3
Although the display positions of the cursors 31 and 32 in the state in which 2 is initially called are arbitrary, both crosshair cursors 31 are displayed on the first graph in the graph item order defined for each graphic display image in this embodiment. , 32 intersection 31a,
32a are displayed in the state of being respectively placed, and the graph on which the intersection is placed is automatically designated. When the function key corresponding to “↑” or “↓” in the function key function display is pushed in this state, the intersections 31a and 32a of the crosshair cursors 31 and 32 have the graph item order determined for each graphic display image. It will be placed on the second graph or the nth (last) graph in the graph item order, respectively, and "↑" or "↓"
The graph item specified by pushing the function key corresponding to is moved up or down one by one.

Both of the above crosshair cursors 31, 32
The graphs on which the intersection points 31a and 32a of the are placed are designated as the measurement target graphs, and when the operator selects the desired graph, the graph is displayed as "Cross 1 ←" or "Cross 1 →" in the function key function display. By operating the corresponding function key, the one crosshair cursor 31 moves in parallel on the display screen while always keeping the intersection 31a on the selected graph. Similarly, by operating the function key corresponding to "Cross 2 ←" or "Cross 2 →" in the function key function display, the one crosshair cursor 32 always coincides with the intersection 32a on the selected graph. While moving, move in parallel on the display screen. The control that is displayed by moving the crosshair cursor on the display screen in parallel with the intersection always placed on the specified graph is
The display processing unit 14 executes this according to a predetermined crosshair cursor display control program.

Two desired and arbitrary two points on the selected graph are intersected with each other by the intersection points 31a, 3 of the crosshair cursors 31, 32 described above.
When the function key corresponding to the "data display" of the function key function display is pushed after the designation in 2a, the above-mentioned cross hair cursor information calculation processing unit 15
Calculates the coordinate values of the two designated points and the distance between the two points in the X and Y axis directions in correspondence with the scale of the graphic image, and sends this to the display processing unit 14. When the data display command is received, the display processing unit 14 enters the measurement result window image display mode, generates window image data for data display as described above, and outputs the window image data as the currently displayed graphic image data. Combine and display on the display screen.

FIG. 4 shows an example of the measurement data window image 41 displayed in a window in the graphic image. The one shown in FIG. 4 is the back pressure measured as the graph measured in the state of FIG. The graph 21 is selected, and the measurement result in which two points of the back pressure actual measurement graph 21 are designated is shown. In the measurement data window image 41, 42 is the X coordinate value (stroke value) of the point designated by one crosshair cursor 31, and 43 is the other crosshair cursor 3
2 is the X coordinate value (stroke value) of the point designated by 2, and 45 is a value (stroke value) indicating the distance in the X direction between the two points, and a unit symbol (mm) 45 indicating the unit is added to these. Is displayed. Further, 46 is a Y coordinate value (pressure value) of a point designated by one crosshair cursor 31,
47 is a Y coordinate value (pressure value) of the point designated by the other crosshair cursor 32, and 48 is a value (pressure value) indicating the distance in the Y direction between the two points, and these are unit symbols indicating the unit. (Kgf) 49 is additionally displayed.

If the function key corresponding to "Crosshair OFF" in the function key function display is pushed in the state of FIG. 3 or 4, the display mode of FIG. 2 is restored.

As described above, according to this embodiment, in the display state of the graphic image, the crosshair cursor ON mode is set, the desired graph is selected, and the crosshair cursor 3 is selected.
With the simple operation of instructing the data display after instructing two points on the graph with 1, 32, the coordinates and distance of the two points are accurately displayed in the window with the unit, so the graph on the display screen The data values can be read quickly and accurately.

Although the present invention has been described above with reference to the illustrated embodiment, a method in which a single crosshair cursor is displayed, one point is fixed by the crosshair cursor, and then another one point is designated is also used. Equivalent measurements can be made. In this case, it is also possible to display only the coordinates of one point. Further, as the applied graphic image, in addition to the charging process, an injection process, a mold opening / closing process, an ejecting process and the like can be mentioned.

[0026]

As described above, according to the present invention, it is possible to provide a numerical image reading method on a graphic image in an injection molding machine, which can quickly and accurately read a value from a graph on a display screen. Its value is enormous.

[Brief description of drawings]

FIG. 1 is a simplified block diagram of a control system of an injection molding machine according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a graphic image of a charging process according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an example of a graphic image when calling a crosshair cursor according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram showing an example of a graphic image in a state where a measurement result of two points is displayed in a window according to an embodiment of the present invention.

[Explanation of symbols]

 1 Microcomputer (microcomputer) 2 Sensor group 3 Driver group 4 Key input device 5 Display device 11 Molding condition setting storage unit 12 Molding process control unit 13 Measured value storage unit 14 Display processing unit 15 Crosshair cursor information calculation processing unit 16 Data conversion processing Part 17 Graph scale generation part 18 Fixed display data storage part 19 Display image data generation part

Claims (3)

[Claims] 1. A microcomputer for driving and controlling each part of a machine based on each set operating condition value and measurement information from each sensor, wherein the microcomputer carries out a charging process in accordance with a predetermined molding operation program. , A mold opening / closing stroke, an injection stroke, an eject stroke, and the like, while performing a series of molding operation strokes, the measured data of each operation condition during operation is fetched and stored, and the microcomputer is set by the operator's instruction. In the injection molding machine that converts the operating condition value or the captured actual measurement data and displays the graphic image of the setting data or the actual measurement data on the display device attached to the machine, the desired one or more graphs are displayed. The graph is specified, and the graph is displayed with its intersection always on the graph. The translation operable crosshair cursor on the screen, specify any two points on the specified graph, the coordinate values of the two specified points, and between the two points X,
A numerical reading method on a graphic image in an injection molding machine, wherein a value indicating a distance in the Y-axis direction is displayed on a display screen on which the graphic image is displayed. 2. The graphic image in an injection molding machine according to claim 1, wherein two cross hair cursors are simultaneously displayed on a display screen, and each of them can be individually moved in parallel. Numerical reading method. 3. The unit display according to claim 1, wherein the coordinate value of the two points displayed in the window and the value indicating the distance between the two points are accompanied by a unit display corresponding to the designated graph item. The numerical reading method on the graphic image in the injection molding machine.