JP3494556B2 - Injection molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to injection molding.In machineInvolved
In particular, a system that captures and stores operation data during continuous operation
Microcomputer (hereinafter referred to as microcomputer) and the microcomputer
Display device that can display various mode images under the control of
Injection molding withIn machineIt is about. [0002] 2. Description of the Related Art Recent microcomputer-controlled injection molding machines are
Color CRT display, color LCD display, etc.
Display device.
Set or check molding operation conditions for dynamic molding operation
Setting mode display image for automatic molding operation
Various actual measurements to display actual measured data of many measurement items
Data display mode image, inspection items automatically at the time of periodic inspection
Periodic inspection mode screen to display the eyes and encourage periodic inspection
Image, an alarm
For example, to display a video image and the like. [0003] By the way, the actual measurement data display mode described above
Conventionally, images displayed with
In many cases, operating characteristics such as the injection stroke can be grasped at a glance.
There was a problem that it was difficult to grasp. In view of this point, the present application
The person displays the measured data of the injection process together with the set values on the display screen.
Machine with a function that can be displayed as a graphic image on top
(Injection molding machine) developed and named JP-A-2-26724.
Suggested. [0004] SUMMARY OF THE INVENTION In the above-mentioned prior application,
Sets the injection speed and injection pressure during the injection stroke
In the stroke, along the stroke (distance) axis,
(Secondary injection) In the process, group along the time axis
Rafik is displayed. However,
In the earlier application, the graphic display is the injection process
Of the actual graphic image of
Actual measurement data of the process, for example, actual measurement data of the charging process
Similarly, it is desired to display graphic images.
Was. The present invention has been made in view of the above points.
The purpose is to measure the actual operation data of the injection stroke.
Graphics image and the process other than the injection process
Graphic image of actual measured data of charging process at least
Can be displayed, and the injection stroke and charge stroke
Graphic display of actual driving data
The line is drawn in a natural and easy-to-see form for data visibility
To provide excellent injection molding machines. [0006] SUMMARY OF THE INVENTION The present invention is directed to the above objects.
To achieve this, set each operating condition value and each sensor
To drive and control each part of the machine based on the measurement information
The microcomputer has a predetermined molding operation
Charge stroke, mold opening / closing stroke, injection stroke according to the program
A series of molding operation steps such as
And capture the actual measurement data of each operating condition during operation.
In the injection molding machine stored inThe microcomputer operates
Graph scale according to the graph scale setting by the
And generate the results of the measurement
Converted to the image data and added to the machine
A charge line is displayed on a display together with the generated graph scale.
The graphic image of the injection process and the graphic image of the injection process.
Display processing means for selectively displaying the image data.
The means may include a charge process for drawing a line on the display device.
The graphic image is displayed at the stroke start point in the displayed graph.
Graph scale also showing the end point of the stroke on the left side of the kale
Displayed on the right side of the display, and a line drawing on the display device.
The graphic image of the injection process to be
The end point of the trip is also displayed on the right side of the indicated graph scale
So that it is displayed on the left side of the graph scaleConstitution
Is done. [0007] That is, a personal computer that controls the entire machine.
Is a preset monitor item during automatic operation.
All the measured data of the
Over and rewrite this to the specified storage area
Store as possible. Then, the actual measurement data desired by the operator
One of the data display mode images, for example,
When the display of the fix image is selected by key operation,
The display processing unit in the computer controls a predetermined image generation program.
Generate a graph scale image based on the
Captures actual measurement data required for display in display mode and
Line drawing and composition on the scale image
-Display on a display device such as a CRT display. this
When,lineOf the charging processGraphic image
With the starting point on the left and the ending point on the right, tableShow
You. On the other hand, the operator displays a graphic image of the injection stroke.
When the display is selected by key operation, the display
The department,lineOf the injection processGraphic imageTo
Set the starting point on the right side and the ending point on the left side, tableLet me show you. [0008] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIGS. FIG. 1 shows one embodiment of the present invention.
Block diagram of a control system of an injection molding machine according to an embodiment
It is. In FIG. 1, 1 is the whole machine (injection molding machine)
Microcomputer that controls the operation and display of the computer, 2 is the machine
Sensor composed of a number of sensors provided in each part of
Group 3 drives many drive sources arranged in each part of the machine
A driver consisting of a number of driver circuits for controlling
Group 4, a key input device arranged on the front of the machine,
5 is, for example, a color provided adjacent to the key input device.
-Display equipment consisting of CRT display, color LCD, etc.
Place. The microcomputer 1 shown in FIG.
Complete molding process such as injection operation, mold opening / closing operation, and eject operation
Body control, calculation / storage of measured data, good / bad
Processing / judgment processing such as product judgment processing and abnormality judgment processing
Or display control processing of an output image of the display device 5, etc.
Perform seed processing. This microcomputer 1 actually has various I
/ O interface, ROM, RAM, CPU etc.
Various programs that are prepared and prepared in advance
Although various processes are executed by
Molding condition setting storage unit 10, molding process control unit 11, actual
It is provided with a measured value storage unit 12, a display processing unit 13, and the like.
The following is a description. Note that the display processing unit 13
Data conversion processing unit 14, graph scale generation unit 15, display
Fixed data storage unit 16, display image data generation unit 17, etc.
Is provided. [0010] The molding condition setting storage unit 10 has a key input.
Various operating condition values input by the force device 4 are rewritten.
It is stored in a possible form. As this operation condition value
For example, tightening force, power value,
Menu position and screw speed, screw retreat speed, and
And back pressure, suck back control condition, injection start point
Injection speed condition from (position) to holding pressure switching point (position)
Injection pressure conditions, from the point of holding pressure change to the end of holding pressure
Injection pressure (holding pressure) condition of each part, band heater of each part
Temperature, mold closing (mold closing) stroke and speed control conditions
Mold clamping force, mold opening stroke and speed control conditions, eject
Control conditions, automatic product take-out machine control conditions, etc.
Can be The molding process control section 11 is prepared in advance.
Molding process control program and molding condition setting
Based on the setting condition value stored in the storage unit 10,
The sensor group 2 (position sensor, pressure sensor,
Sensors, temperature sensors, etc.) and built-in
While referring to the timing information from the clock
Iva group 3 (motor driver, hydraulic cylinder driver,
Control the corresponding drive source via the data driver, etc.)
Then, a series of molding steps are executed. The sensor group
ACC (Aki)
Accumulator) Charge pressure detection sensor, screw
Troke detection sensor, screw rotation speed detection sensor,
Output pressure and back pressure detection sensor, mold opening / closing stroke detection sensor
, Mold clamping pressure detection sensor, mold pressure detection sensor, eject
Projection / return stroke detection sensor, eject series
Pressure detection sensor, operation check
Sensors, temperature sensors for each part, power value detection sensors, etc.
It is. The actual measurement value storage unit 12 has a continuous automatic operation.
The actual measured data of all monitor items set in advance
Data over a predetermined number of consecutive shots
I will. Monitor items to be captured include time monitoring
Items, position monitoring items, rotation speed monitoring items, speed monitoring
Items, pressure monitoring items, temperature monitoring items, power monitoring items
And the like.
Items almost overlap. What
Note that the actual measured speed is calculated based on the stroke (position)
Based on the measurement information and the clock information from the sensor,
Real-time processing is performed by an unillustrated arithmetic processing unit in the microcomputer 1.
Is calculated in a predetermined area of the measured value storage unit 12.
Is stored. The display processing unit 13 includes a key input device 4
The display image in the mode desired by the operator
Display image creation / control
Display image data of the specified display mode based on the
Create data. That is, a table specified by the operator
When the call instruction of the display image arrives, the display processing unit 13
The data conversion processing unit 14 may execute the molding conditions as needed.
Information stored in the setting storage unit 10 or the actual measurement value storage unit 12
Extract the data to be used for displaying the display mode image.
Out of the display mode image specified
Conversion processing is performed to a form corresponding to the display form. For example,
If the displayed display mode is a graphic image of a certain process,
Converts extracted data to image data that has been rendered
Or convert predetermined data such as the maximum value into numerical image data
Processing, etc., and the specified display mode is
If the image is a rotation state setting image, the extracted data is
Data, etc. Also, if the specified display mode is
If the image is a graphic image, the graph scale
The forming unit 15 includes the contents of the data conversion processing unit 14 described above.
Or based on the operator's scale instruction.
Graph scale (graph scale) generation program
The scale image data and the scale image
And generate data. The data conversion processing unit 14 and the graph
The generation processing data of the scale generation unit 15 is the display image
Display mode specified by data generation unit 17
Is a graphic image, the graph
At a predetermined position on the image data,
Convert to the enlargement / reduction ratio
Graphic image data is overwritten and synthesized.
You. It is also created in advance in the display fixed data storage unit 16.
Fixed data for many mode images stored and stored
Bar characters, symbols, graphic figures, ruled line data, etc.
Data for use in displaying the display mode image
Extracted and taken into the display image data generation unit 17.
In rare cases, they are combined as image data for display. This
As a result, the display image data generation unit 17
Graduations, graduation numbers, and line drawings for graphical display images
Graph, mode display character, unit symbol, item display character, location
Predetermined data values, etc. are arranged / combined in a prescribed manner and color-coded
Image data with information etc. is created, and this is written
Held interchangeably. The specified display mode is
If it is not a graphic image, the data conversion processing unit 14
And the contents of the fixed display data storage unit 16
The image data for the display image specified in
It is generated and held by the generation unit 17. The image data of the display image data generator 17
Data is transferred to a frame buffer (not shown) and temporarily stored.
The frame buffer is controlled by a command from the display processing unit 13.
Is output to the display device 5 and the display device 5
The image data of the predetermined mode is displayed on the display screen of
Will be. FIG. 2 is a diagram showing a state in which the operator performs a charging process.
When the display of the fix image is designated, the display
Charge stroke graph of the latest molding cycle called on the surface
Fig. 9 shows a fix image. In the figure, the horizontal axis is the screen.
Position of the screw (screw retraction stroke)
The scale value is shown below.
The value increases from left to right
You. The vertical axis indicates the back pressure in the figure, and the left side indicates the back pressure.
Numerical values indicating the scale of are shown on the left side of FIG.
In the same figure on the vertical axis, the right side is the screw rotation speed and screw
-Indicates the retreat speed, a number indicating these scales
The value is a two-stage overlap on the right side of the figure (upper speed and lower speed)
Each is represented. Also, in FIG.
Actual measured data of pressure, 22 is actual measured data of screw retreat speed
And 23 show the measured data of the screw rotation speed, respectively.
24 is back pressure setting data, and 25 is
The setting data of the crown rotation speed is shown. Here, on the display screen of FIG.
The graph characteristic lines for speed and rotation speed are different
Color, and according to this color classification
Numbers, units and characters are displayed in the same color
The operator can see at a glance which graph characteristics
I can recognize what the sex line represents
(Note that this color classification is shown in FIGS. 3 and 4 described later.)
It is the same even if it is). In the graphic image of this charging process,
The measured back pressure data 21 and the screw retraction speed
Actual measurement data 22 and actual measurement data 23 of screw rotation speed
The charge line is displayed at the same time and the line is displayed
The actual measured graphic data 21, 22, 23
With the point on the left and the end point on the right, tableLet me show you. A graphic image table of such a charging process
When the charging mode is set, the charging start point (before the screw
Charge from the injection completion point, which is the limit of progress;
To the completion point (weighing completion point; that is, the end of the stroke)
Correlation between pressure, screw retreat speed, and screw speed
Relationships can be easily grasped, and good plasticization control of resin material
Can be reflected to the
It will be very useful for diagnosis. In addition, back pressure measurement data
Data 21, actual measurement data 22 of screw retreat speed,
The actual measurement data 23 of the rotation speed indicates that the stroke starting point is on the left
End point on the rightTableWill not be confused.
Data can be monitored and observed with good visibility. The display screen shown in FIG.
Was displayed before the graphic image was displayed.
To a function key (not shown) in the key input device 4.
Indicates the current operating function assigned and the current display mode
In the initial state, the function is “one time / overlap”
Is displayed to indicate that the selection status with the keypad is "= write once"
And the scale mode function key
It is displayed that the selection status is “= Auto”, and this status
In this state, the microcomputer 1 converts the measured graphic data to the latest
Draw only one cycle, and scale the graph.
Is automatically created by the microcomputer 1. Soshi
In this state, the function corresponding to “one time / overlap”
When you press the key, the display of "= write once" becomes "=
Microcomputer 1 is switched to “overwrite mode”
The actual measured graphic data includes the latest molding cycle.
Displayed over multiple molding cycles.
You. Also, the state of FIG. 2 corresponds to the “scale mode”.
When you press the function key, the “Auto” table is displayed.
The display changes to “= setting” and the microcomputer 1 scales
The setting will be accepted, and the operator will be
The operator's instruction by setting
Scale is generated at the scaling ratio according to the scale
The actual measurement graph and the setting graph are drawn accordingly.
It is supposed to be. Note that this function key
Switch between “= write once” and “= overwrite”
And the scale selection by “= Auto” and “= Setting”
The same applies to the display image of. In this embodiment, the graphic
Operation of the graphic display item even when the graphic image is displayed
Conditions can be set, and key operation is performed appropriately
And the microcomputer 1 take the operating condition setting acceptance mode
Has become. For example, the charge process graphic image in FIG.
In the image, the setting (or changing
Further, the reception mode is set, and the above-described back pressure setting characteristic line 2
4. Move the cursor on the setting characteristic line 25 of the screw rotation speed.
By performing line drawing with this and finalizing registration operation,
The input data processing operation unit (not shown) in the icon 1
Calculate the back pressure and screw rotation speed corresponding to the
Out of the predetermined area of the molding condition setting storage unit 10 described above.
The data is registered for update. FIG. 3 is a graph showing the injection stroke of the operator.
When the display of the backup image is specified, the display screen of the display device 5 is displayed.
Injection stroke graphic image of the latest molding cycle called
An image is shown. In the figure, the right half of the horizontal axis is the screen.
Queue position (from the right end of the weighing completion point to the center pressure holding switching point
Up to the primary injection stroke)
Set the screw advance limit to 0 and increase to the right
The left half of the horizontal axis is the time
The pressure-hold switching point is set to 0 for the pressure-holding stroke time until the completion point).
These scales are shown to increase to the left
Are shown below. The vertical axis is the same figure
The left side shows the injection pressure, and the number indicating the scale of this
The values are shown on the left side of the figure, and the right side of the figure on the vertical axis is
Indicates the injection speed, and the numerical value indicating the scale is the same.
This is shown on the right side of the figure. In the same figure, 31 is
Injection speed measurement data, 32 indicates injection pressure measurement data
33 is the injection speed setting data.
And 34 indicate injection pressure setting data.
You. Although not shown in FIG. 3, a graph of the injection stroke is shown.
Graphic data of mold pressure in graphic image
It is also possible. In the graphic image of the injection process,
Are measured data 31 of injection speed and measured data of injection pressure
32 is the starting point of the process (the weighing completion point)rightOn the side, the end of the journey
(At the completion of pressure holding)leftOn the side, tableShown. A graphic image display mode for such an injection process
When the injection mode is installed, the change in the measured injection speed during the primary injection stroke and the
Change of measured packing pressure during the pressure and packing (secondary injection) process
Can be grasped and reflected on good injection / filling control.
In the event of a defective product.
You will stand. In addition, the injection speed measurement data 31
The actual measurement data 32 of the output pressure indicates that the stroke start point is on the right side and the stroke end point is
Point to the leftTableIt is shown, so confusedToDon't happen
Data can be monitored and observed with good visibility. FIG. 4 is a graph of the opening and closing strokes of the mold by the operator.
Screen of the display device 5 when the display of the dynamic image is designated
Mold opening and closing stroke graph of the latest molding cycle called
Image and the eject process graphic image.
You. That is, in the present embodiment, the graphic
By specifying the image display, the mold opening / closing stroke graphic is displayed on the same screen.
Simultaneously write the image and the eject process graphic image
Is displayed in the form of The reason for this is the type
The opening and closing stroke and the eject stroke are related to each other and are the same.
Observation / monitoring for operators by displaying them simultaneously on the screen
This is because it is convenient. Of course, the mold opening and closing stroke graphic image
Image and the eject stroke graphic image on separate screens
It is also possible. In FIG. 4, part A is a mold opening stroke.
The graphic image at the time, the part B below the part A is the mold closing process
The graphic image at the time is ejected in the C part on the right side of the A part
The graphic image at the time of the protruding stroke, the D part below the C part is
Shows the graphic image during the eject return process
ing. Also, in FIG.
The horizontal axis is the mold opening / closing stroke (the piston of the mold closing cylinder)
Increase the rod stroke) from the right end of the mold clamping point to the left.
It is shown to be large, and C and D parts (ejection process)
The horizontal axis of the eject stroke (eject cylinder
Piston rod stroke) returns to the left end eject
From the completion point to the right.
Are shown below. Also,
The vertical axis on the left side of FIG. 3 shows pressure, and this scale is
The numerical values shown are shown on the left, and the vertical axis on the right in FIG.
The speed is shown, and the value indicating this scale is displayed on the right side.
Have been forgotten. Here, in FIG.
Actual measured data, 42 is the mold opening / closing pressure (
(Oil pressure), 43 is eject ejection / return speed
Measured data, the eject pressure (ejection pressure)
The actual measurement data for the oil pressure of the
45 is the setting data of the mold opening / closing speed, and 46 is the mold opening / closing pressure.
Setting data, 47 is the eject ejection / return speed setting
Constant data, 48 are eject pressure setting data
Is shown. Such a mold opening and closing stroke graphic image and edge
Graphic that simultaneously displays the project process graphic image
With the image display mode, the mold opening / closing process and
Observation / monitoring of the stroke in the form of contrast with the protrusion / return stroke
Visualization can be performed at a glance with good visibility.
This can be reflected in the setting of operating conditions, and causes such as the occurrence of abnormalities
Very useful for elucidation. FIG. 5 shows an example in which the operator performs one-cycle graphing.
When the display of the backup image is specified, the display screen of the display device 5 is displayed.
One cycle graphic of the latest molding cycle called
1 shows an example of an image. This one cycle graphic image
In the image, a plurality of items selected by the operator in advance
Measured graphic data is displayed along one cycle time axis.
It is displayed at the same time in the form shown. This implementation
In the form, injection speed, injection pressure, charge rotation
Number, mold opening / closing speed, eject ejection / return speed, inside mold
Pressure, power, tightening force, ACC pressure, reserve
5 items are arbitrarily selected from 11 items of eyes 1, 2
By measuring, the measured graphics of the five selected items
Data is displayed at the same time.
Selection and combination of two items can be done at any time
You. The horizontal axis in FIG. 5 is the one cycle time axis as described above.
The numerical value indicating the scale is shown below.
The vertical axis in FIG. 5 indicates a specific scale value.
Instead of the actual measurement currently displayed on the left side of the leftmost vertical axis
Characters indicating items are displayed. And the time axis
Measured graphic data of each item displayed along
Is the area assigned to each item (scaled with dashed lines)
(The area where the graph display area is divided horizontally by 5)
The graph is displayed with the scale of the magnification automatically set.
Graphic image display of such a one-cycle graphic image
When a mode is provided, the desired multiple items in one cycle
At-a-glance overview of measured data (operating conditions) at a glance
Easy to study the operation time of each process in one cycle
Set good molding operation conditions throughout one cycle
・ We can greatly contribute to examination. FIG. 6 shows one cycle logic of the operator.
When the display of the graph image is designated, the display image of the display device 5 is displayed.
One cycle log of the latest molding cycle called on the surface
1 shows an example of a graph graph image. This one cycle graph
In the image, an arbitrary number selected in advance by the operator
Number of input / output ports, i.e., installed on each machine
Actuators (solenoids for electromagnetic control valves, etc.)
Logic graph data showing on / off timing of
Data are displayed simultaneously along the one cycle time axis.
As shown. In the present embodiment, 1
20 items can be arbitrarily selected from 60 input / output ports
By doing, the actual measurement graph of the selected 20 items
Data is displayed at the same time.
20 items can be selected and combined at any time
I have. The horizontal axis of FIG. 6 is the one cycle time axis as described above.
The scale value is shown below.
You. The current display is on the left side of the leftmost vertical axis in FIG.
Characters indicating actual measurement items are displayed.
The on / off timing of the corresponding actuator
It is displayed as a trick graph. Such one cycle
A graphic image display mode for logic graph images is provided.
As a result, the desired number of input / output ports can be turned on in one cycle.
On / off relationship can be grasped at a glance, and when an abnormality occurs, etc.
It is possible to easily and reliably determine the cause location. [0028] As described above, according to the present invention, the injection stroke
Graphic image of actual operation data of
At least as much as
The graphic image can be displayed and the charge process
Graphic image, The starting point on the left and the ending point on the right
ITableInjection line to be displayed and drawn on the display device
ModerateGraphic image, The starting point of the journey to the right and the ending point of the journey to the left
BesideTableInjection stroke and charge stroke
Of actual driving dataimageThe display is different
The data is displayed in a natural and easy-to-view form without any sense of incongruity, allowing data to be viewed
Excellent in properties. further,Large
The process and the injection process are displayed as partially enlarged graphic images.
Even if, ExpansionViewed from the entire journey of the enlarged area
Position on the left side of the charge process
The line on the right with respect to the starting point and during the injection stroke
The user can intuitively grasp each of them based on the starting point.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified block diagram 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 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 of an ejection process according to an embodiment of the present invention. FIG. 4 is an explanatory diagram showing an example of a graphic image of a mold opening / closing process and an eject process according to an embodiment of the present invention. FIG. 5 is an explanatory diagram showing an example of a one-cycle graphic image according to an embodiment of the present invention. FIG. 6 is an explanatory diagram showing an example of a one-cycle logic graph image according to one embodiment of the present invention. [Description of Signs] 1 microcomputer (microcomputer) 2 sensor group 3 driver group 4 key input device 5 display device 10 molding condition setting storage unit 11 molding process control unit 12 measured value storage unit 13 display processing unit 14 data conversion processing unit 15 Graph scale generator 16 Display fixed data storage 17 Display image data generator

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-55118 (JP, A) JP-A-3-146322 (JP, A) JP-A-3-10823 (JP, A) JP-A-61- 269966 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/76 B22D 17/32

Claims (1)

(57) [Claim 1] A microcomputer for driving and controlling each part of the machine based on each set operation condition value and measurement information from each sensor is provided. In an injection molding machine that executes a series of molding operation processes such as a charge process, a mold opening / closing process, an injection process, an eject process, and the like according to a predetermined molding operation program, and captures and stores measured data of each operating condition during operation, The microcomputer has a graph by an operator.
Generates a graph scale according to the scale setting.
The captured measurement data is converted to graphic image data.
And conversion process, on a display device that is attached to the machine, the
Graphic image of charge process with generated graph scale
Display processing means for selectively displaying an image and a graphic image of an ejection process , wherein the display processing means displays a graphic image of a charge process to be drawn and displayed on the display device, and displays a stroke start point on the display device.
The end point of the journey is also displayed on the left side of the
Was displayed on the right side of the graph scale, also the Gurafiku image of the injection stroke to be line drawings displayed on the display device, the stroke end point stroke start point to the right of the graph scale is the display also on the left side of the graph scale displayed injection molding machine is characterized in that so as to appear.