JPH03155916A - Control apparatus of injection molding machine - Google Patents

Abstract

PURPOSE:To expand the display range of numerical value data and to secure display accuracy by mounting a numerical value operating part increasing and decreasing the numerical value data held to a register and a figure position moving means moving the figure setting of a numerical value display part and the numerical value operating part corresponding to the number of figures of the integer part of the numerical value data. CONSTITUTION:A figure position moving means 30 is equipped with a numerical value data judging means 35 and a figure shift control means 36 and, when either one of buttons 21-24 is operated in a setting/display switch 5, a numerical value data judging means 35 investigates the numerical value data R in a register 3 and judges a figure position on the basis of the judgement reference value corresponding to the button data from a numerical value setting means 33. In this judgement when increase and decrease operation is applied to the numerical value data R, a figure shift control means 36 sends a figure of either one of the left and right to a display control means 34 and the numerical value setting means 33 in such a case that the movement of a figure position is judged to be necessary. On the basis of the shift order, the figure positions of respective display devices 11, 12 are altered in the display control means 33 and the alteration of an operation unit is performed in the numerical value setting means 33 and the increase button 21 and the reduction button 23 are held to the state corresponding to the display device 11 while the increase button 22 and the reduction button 24 are held to the state corresponding to the display device 12.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a control device for an injection molding machine, and particularly to a control device that displays externally set numerical data and that can be operated by an operator while directly viewing it. It is available.

[Background technology]

Traditionally, control devices for injection molding machines have used a variety of numerical data to control operations in order to accurately execute the desired molding operations, and have also monitored the execution status of the injection molding machine and made adjustments, etc. It is now possible to do this.

In order to enable operators to quickly and reliably set, adjust, and check various numerical data, the display on the operation panel and the layout and correspondence of the operation parts are made easy to understand to improve visibility and operability. The applicant of the present invention has proposed an improved method (see Japanese Patent Application No. 58-32581).

In Figure 9, the control device of the injection molding machine is bus line B.
It has a main processing system connected by USLL, and a pass line BUSL2. It is equipped with a sub-processing system connected by BUSL3.

The main processing section 115, the common RAM 125, and the output sections 121 and 124 are connected to the pass line BUSLI, and also the operation panels 111 and 112 and the A/D conversion section 117 and 120 are connected via the interface 113 and 114. A sequencer 123 is connected via inputs 118, 119, 110122 of the injection molding machine.

The main processing unit 115 has an internal memory backed up by a battery 116, in which various numerical data exchanged on the pass line BLISLI are stored.

The main processing unit 115 also has a non-volatile program memory, in which a group of programs for processing each data is stored, and the main processing unit 115 can be used to set the operation panels 111, 112 and input unit 118.
．． It generates operation commands in response to inputs from 119 and outputs them to output units 121 and 124 to control the injection molding machine.

The operation panels 111 and 112 are equipped with an operation section through which the operator sets and adjusts each data, and a display section for displaying the set data. The data necessary for the mold clamping operation is set.

The input units 118 and 119 are for detecting the execution state of the injection molding machine, and the input unit 118 is for detecting the injection pressure detection sensor 11.
8A, a linear scale 118B that detects the position of the screw associated with the injection operation, etc., a tachometer 118c that detects the rotation amount of the screw required in connection with the measuring process, etc., acquire a status signal regarding the injection operation, and input unit 119 acquires status signals regarding the mold clamping operation using a mold clamping pressure detection sensor 119A, a linear scale 119B for detecting the position of the moving mold, and the like.

The output units 121 and 124 are for D/A converting the operation command signal from the main processing unit 115, and the output unit 121 is for converting the operation command signal from the main processing unit 115 into an electromagnetic flow valve or A valve device 121A such as a relief valve is operated, and the output section 124 is a valve device 124A provided in the mold clamping part of the injection molding machine based on a command regarding the mold clamping operation.
Activate.

The sequencer 123 acquires information from a detection unit 130 such as a limit switch arranged in each part of the injection molding machine during execution of the injection operation and the mold clamping operation, and controls the interlock relationship between each part.

The common RAM 125 is also connected to the pass line BUSL2 and the pass line BUSL3, for example, the main processing section 115 and the pass line BUSL2. This is a buffer memory used for mutual data exchange with each unit connected to BUSL3.

The pass line BUSL2 includes a sub-processing unit 126, a printer 127 via an ink face 137, a production management information setting unit 128 via an ink face 135, an operation panel 129 via an ink face 136, and a sequencer via an ink face 134. -123 is connected.

The sub-processing section 126 has an internal memory backed up by a battery 133, in which a group of molding data corresponding to the mold to be used is stored. Further, an external storage medium such as a magnetic tape device 132 is connected to the sub-processing unit 126.
You can load the data group corresponding to the mold to be used and save the changed data group. Note that the sub-processing unit 126 stores data groups corresponding to a plurality of molds in advance, or sequentially loads data groups corresponding to each mold to be used.

The printer 127 is connected to the common ram 125 or the sub-processing section 12.
This is to type out the data group stored in 6.

The production management information setting unit 128 is for specifying a mold to be used for molding and setting the number of shots of a molded product to be molded with the mold.

The operation panel 129 performs command operations such as data loading in the sub-processing section 126 and command operations such as data transfer with the main processing section 115, and also controls molding cycle time, injection time, and molding time according to the mold and molded product. Air blowing to the mold is used to set and display the time, etc.

The sequencer 123 outputs an alarm display or the like indicating a time-over condition to the injection molding machine when the time set on the operation panel 129 (for example, one molding cycle time) is exceeded.

5-- The sub-processing section 139, the operation panel 142 via the ink face 140, and the temperature detectors 130 of various parts of the injection molding machine are connected to the pass line BUSL3 via the ink face 141, and a temperature controller 138 is configured by these. ing.

The sub-processing unit 139 monitors, for example, the temperature of oil in the hydraulic unit and the actual temperature in the resin melting cylinder from the temperature detector 130, and adjusts the temperature of the injection molding machine based on the settings on the operation panel 142 and a preset program. This is to adjust the

In the above-mentioned control device, the arrangement of the display section and the operation section on the operation panels Ill, 112, 129, 142, etc. of each part is devised so that the operator can visually check the progress of the molding operation accurately.

As shown in FIG. 1θ, on the operation panel 111, each data is digitally displayed using LEDs, etc., and each data is grouped into data systems to improve visibility during confirmation and operation. Among these, the main data such as injection pressure 172, screw position 169, screw rotation speed 167, etc. are displayed in a large size for easy viewing. In addition, 151 data that need to be confirmed, adjusted, and set.
~158.160~164°166, 170.171.
For 173 to 178, etc., a digital display and a digital switch that can increase or decrease the value is used.

As such a digital switch, the present applicant has developed an integrated electronic digital switch that displays a numerical value held using a register on an LED and also allows the numerical value to be increased or decreased using push buttons placed above and below the display part. (See Japanese Patent Application No. 59-174171).

In addition, there are digital switches that can be configured to the required number of digits by connecting modules for each digit as appropriate.The relationship between each module, including automatic carry up and down, is also connected to the signal line. There are some things that have been designed to make it easier.

[Problem to be solved by the invention]

By the way, in the digital switches and the like of the operation panel in the conventional injection molding machine control device described above, each display digit position is appropriately set as necessary.

For example, if the number of display digits is 3 digits, if you set the integer part to 2 digits and the decimal point to 1 digit, the displayed number will be 0°0 to 99.
9, and it is possible to handle numerical values in the range of 0 to 100 in 0.1 increments. Furthermore, if the integer part is set to one digit and the decimal point is set to two digits, the displayed numerical value will be 0.00 to 9.99, and the range of O to 10 can be handled in 0.01 increments.

However, with digital switches in conventional control devices, numerical values are set using operation buttons, etc. that correspond to the display digit positions, so they are fixed at preset digit positions to ensure mutual correspondence, and there are various differences when using them. There are some inconveniences.

For example, considering the handling of 3 significant figures, 1.23
and 0 to 12.3 to cover numbers such as
It is necessary to be able to handle numerical values in the range of 100 in increments of 0.01, and in order to handle it with the fixed number of digits method, 4 digits are used and 01.
23 to 12.30 must be displayed. Therefore, as the number of digits increases, the cost increases, and as the size increases, the installation space also increases, but there is a problem that invalid digits occur in some of the set display digits and cannot be used effectively.

In particular, when configuring a device so that a variety of numerical data can be captured within a fixed board surface with emphasis on electrical conductivity, an increase in the number of display digits in a digital switch becomes a major obstacle.

An object of the present invention is to provide a control device for an injection molding machine that can ensure sufficient numerical data display or setting range and accuracy with a small number of display digits.

[Means to solve the problem]

The present invention provides a control device for an injection molding machine, which includes a setting section for setting numerical data corresponding to a molding operation of the injection molding machine, and controls the molding operation of the molding machine based on the settings of the setting section. a register that holds the numerical data as a setting section; an input/output control means that inputs and outputs the numerical data held in the register based on an external command; and numerical data held in the register based on manual operation. a numerical operation section that increases or decreases the value, a numerical display section that displays the numerical data held in the register, and a digit position that moves the digit settings of the numerical display section and the numerical operation section according to the number of digits of the integer part of the numerical data. It is equipped with means of transportation.

[Effect]

In the present invention, the numeric data in the register is displayed by the numeric display section, and the numeric value can be manipulated digit by digit by the numeric operation section.

At this time, the digit settings including the decimal point of the numeric display section and the numeric operation section can be moved simultaneously using the digit position moving means to ensure the relationship between the display section and the operation section, and the integer part of the operated numeric data is If the number of digits increases, the digit position is shifted to the right, and if the number of digits decreases, it is shifted to the left. Therefore, it becomes possible to effectively use the display digits by displaying the set number of significant digits, and it becomes possible to ensure display accuracy while expanding the display range of numerical data that can be handled, thereby achieving the above purpose. .

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 and 2, the control device l is basically the same as the control device in FIG. 9, and the injection molding machine 2
The control circuit 3 includes a control circuit 3 and an operation panel 4, and a plurality of setting/display switches 5 are arranged on the operation panel 4 as a setting section for displaying and setting numerical data for control.

The setting/display switch 5 has two LEs arranged on the surface.
It has a numerical display section IO including D displays 11 and 12, and can display numerical data set in the control circuit 3 in two-digit numbers. These indicators 11 and 12 each use a 7-segment LED 13 for displaying numbers, and can display a decimal point using a dotted LED 14 at the lower right. Further, an increase button 21.22 and a decrease button 23, 24 are arranged above and below each display 11. It is possible to increase or decrease the numerical value for each display digit.

In addition, an operation 0N10FF switch 6 and a display 0N10FF switch 7 are arranged on the operation panel 4, and the control circuit 3 sets each switch 5 to an operation 0N10FF switch 6 based on each setting state.
10FF command and display 0N10FF are output, the display at each setting/display switch 5 is performed only when switch 7 is ON, and each operation can be performed only when switch 6 is ON.

Here, the setting/display switch 5 of this embodiment is configured to automatically set display digit positions including decimal point display.

In FIG. 3, the setting/display switch 5 is provided with a register 31 that holds numerical data.

An input/output control means 32 is connected to this register 31,
The input/output control means 32 stores predetermined numerical data sent from the control circuit 3 in the register 31, and outputs the numerical data in the register 31 in response to a request from the control circuit 3.

Further, a numerical value setting means 33 is connected to the register 31. The numerical value setting means 33 is operated by pressing each of the buttons 21 to 24 on the front surface.
are connected to increase button 21 and decrease button 2
Each time the increase button 22 and the decrease button 24 are operated, the lower digit operation unit is added or subtracted from the numerical data in the register 31. Here, the lower digit operation unit is l or 0.1 according to the digit setting of the display 11, and the upper digit operation unit is IO according to the digit setting of the display 12.
or l, each of which is selected by an external shift command. The buttons 21 to 24 and the numerical value setting means 33 constitute a numerical operation section 20.

Further, a display control means 34 is connected to the register 31. The display control means 34 is connected to each display 11.12 on the front surface via an LED driver 15.16, and displays a numerical value Nl representing the numerical data in the register 31 in two digits.
, N2 are assigned to each driver 15.16, and the driver 15.16 controls the lighting state of each LED 13.14 according to each numerical value, thereby displaying the desired numerical value on each display 11.12. Here, the display control means 343-4 determines the numerical values Nl and N2 based on the digit setting of either the 10th place and the 1st place or the 1st place and the 0.1st place, but this digit setting is changed by an external shift. Changes based on the Directive. Further, the display control means 34 outputs a decimal point 0N10FF command to the driver 16 in accordance with these digit settings, and controls lighting of the LED 14 of the display 12 on the higher digit side. These indicators 11, 12, drivers 15, 16, and display control means 34 constitute a numerical display section 10.

In addition, in the case of shifting the digit position to the right (upper digit 1st place → 10th place, lower digit 0°1st place → 1st place), the value in the 0.1st place of the lower digit will be lost, but in this case, It is configured to round off or round up, and the result is also returned from the numerical value setting means 33 to the register 31 to maintain consistency of processing.

On the other hand, digit position moving means 30 for simultaneously moving the display digit position and the operation digit position is connected to the numerical value setting means 33 and the display control means 34.
is the numerical data determination means 35 and the digit shift control means 3
It is equipped with 6.

Among these, the numerical data determination means 35 reads the numerical data in the register 31, and compares it with the determination reference value preset according to each button 21 to 24 identified by the numerical value setting means 33 to determine the numerical value after the operation. This is used to determine changes in the number of digits in the integer part of data. Here, as the determination reference value, the number of units that can be displayed in two digits, 0.1, 1.10, and their combination, such as 11.20°9.0.9.9, are adopted.

Further, the digit shift control means 36 determines whether or not it is necessary to move the display digit position based on the determination result of the numerical data determination means 35, and outputs a shift command to the numerical value setting means 33 and the display control means 34 as necessary. .

Note that the display 0N10FF command from the control circuit 3 is output from the input/output control means 32 to the display control means 34, and the numerical display unit 10 is enabled and displayed only when the display is ON. Further, the operation 0N10FF command from the control circuit 3 is outputted from the input/output control means 32 to the numerical value setting means 33, and the numerical operation section 20 is configured to accept operation of each button only when the operation is ON and to enable the numerical operation section 20. ing.

5 In the setting/display switch 5 of this embodiment configured as in 1, the numerical data R input manually from the input/output control means 32 to the register 31 is converted into a two-digit value by the display control means 34 and displayed as a high-order value. The digits are displayed on the display 12, the lower digits are displayed on the display 11, and the buttons 21 to 24 are awaited for operation.

In this state, when any button is operated, the numerical data determining means 35 examines the numerical data R in the register 31 and determines the digit position based on the determination reference value according to the button information from the numerical setting means 33. judge.

Following this determination, the numerical value setting means 33 adds or subtracts the numerical data R in the register 31 in units of current operation set to the operation buttons. Here, if it is determined in the judgment that it is necessary to move the digit position by adding or subtracting the numerical data R, the digit shift control means 36 sends a left or right shift command to the display control means 34 and the numerical value setting means 33. Based on this shift command, the display control means 34 changes the digit position of each display 11, 12, and the numerical value setting means 33 changes the operation unit, and the lower increase button 21 and decrease button 23 respectively is maintained on the display 11, and the upper increase button 22 and decrease button 24 are maintained corresponding to the display 12.

These processes are executed as a series of processes corresponding to each button as shown in FIGS. 4 to 7.

As shown in FIG. 4, when the increase button 22 (UF4) is pressed, a judgment (processing 41.42 ) is carried out.

Here, if the numerical data R is less than 9.0, the numerical data R
Add the upper digit operation unit l with the decimal point ON to (process 43
), display 12 (LED2) in the 1s digit, display 11 (L
The numerical data R is displayed with IEDI) set to the 0.1 digit (processing 44).

Furthermore, if the numerical data R is 10 or more, the upper digit operation unit lO of the decimal point F state is added to the numerical data R (processing 45).
, LED2 is displayed as the 10's digit and LE old is displayed as the 1's digit (processing 46).

Furthermore, if the numerical data R is less than 10 and 9.0 or more, 17 = 18-, then the upper digit operation unit 1 with the decimal point ON is added to the numerical data R.
(process 47), shift the display digits and operation units to the right, move LED2 from the 1s digit to the IO digit, and shift the decimal point to 0.
FF, change the LEDI from 0.1 digit to 1 digit, change the upper digit operation unit from 1 to 10, and change the lower digit operation unit from 0.1 to 1 (48), and in this state, change the numerical value. Data R is displayed on LED 2 and LED 1 (process 49).

Therefore, as shown in Figure 8 (A), the current display is 8.0.
If the increase button 22 is pressed at this time, the value is increased by 1 through processes 43 and 44, and the display becomes 9.0. Then button 22
When is pressed, the value is incremented by 1 and the decimal point is deleted through processes 47 to 49, and the display becomes 10. When button 22 is further pressed, the value is increased by 10 through processes 45 and 46, and the display is 2.
It becomes 0.

If the current display is 8.8 as shown in FIG.
, IL 21. This is a case where the original value (10, 8) is set to be rounded off when moving the decimal point in processes 47 to 49, and when rounded down, it becomes 9.8.1O120.

As shown in FIG. 5, when the increase button 21 (UPI) is pressed, a judgment is made based on the judgment standard value 9.9 (・10 - 0.1), 10 (processing 51) according to the button information (UPI=ON). .52) is performed.

Here, if the numerical data R is less than 9.9, the numerical data R
A lower digit operation unit of 0.1 with the decimal point ON is added to (processing 53), and LED2 is displayed as the 1's digit and LBDI is displayed as the 0.1's digit (processing 54).

Furthermore, if the numerical data R is 10 or more, add the lower digit operation unit 1 of the decimal point hand F state to the numerical data R (processing 55).
, LED2 is displayed as lO digit and LE old is displayed as 1 digit (processing 56).

Furthermore, if the numerical data R is 9.9 or more and less than IO (・9
．． 9), add the lower digit operation unit 0.1 to the numerical data R (
Process 57), shifts the display digits and operation units to the right (
Process 58 (same as above-mentioned Process 48), and display numerical data R on LED2 and LEDI in this state (Process 5
9).

Therefore, as shown in FIG. 8(C), if the increase button 21 is pressed when the current display is 9 0 9.8, processing 53 to 5
4 increases the value by 0.1 and the display becomes 9.9. Next, when button 21 is pressed, the value becomes 061 through processes 57 to 59.
As the number increases, the decimal point disappears and the display becomes 10. When the button 24 is further pressed, the value is incremented by 1 through processes 55 and 56, and the display becomes 11.

As shown in FIG. 6, when the decrease button 24 (DOWN2) is pressed, the judgment (
Processes 61 and 62) are performed.

Among these, if the numerical data R is less than 10, the numerical data R
Subtract the upper digit operation unit 1 with the decimal point ON from (Process 6
3) Display the LED2 as the 1's digit and the LE old as the 0.1's digit (process 64).

Further, if the numerical data R is 20 or more, the upper digit operation unit 10 of the decimal point hand F state is subtracted from the numerical data R (processing 65
), LED2 is displayed as the 10's digit and LEDI is displayed as the 1's digit (process 66).

Furthermore, if the numerical data R is greater than or equal to 10 and less than 20, the upper digit operation unit 10 with the decimal point OFF is subtracted from the numerical data R (process 67), the display digit and operation unit are shifted to the left, and the LED 2 is changed from the tens digit to the one unit. 68). In this state, display the numerical data R on LED2 and LIEDI (Process 6
9).

Therefore, as shown in FIG. 8(D), if the decrease button 24 is pressed when the current display is 22, the value is reduced by 10 and the display becomes 12 through processes 65 and 66. Subsequently, when button 24 is pressed, the value is decreased by IO and a decimal point is displayed through processes 67 to 69, and the display becomes 2.0. More button 2
When 4 is pressed, the value is decreased by 1 through processes 63 and 64, and the display becomes 1.0.

As shown in FIG. 7, when the decrease button 23 (DOWNI) is pressed, a determination (process 71.72) is performed based on the determination reference value 10.11 (・10+1) according to the button information (DOWNl=ON). .

Here, if the numerical data R is less than 10, subtract 0.1 of the lower digit operation unit with the decimal point ON from the numerical data R by 1-2 (process 73), set LED2 to the 1's digit, and set LHDI to 0.
．． It is displayed as the 1's digit (processing 74).

Furthermore, if the numerical data R is 11 or more in process 72, subtract the lower digit operation unit 1 with the decimal point OFF from the numerical data R (process 75), and display LED2 as the tens digit and LEDI as the 1s digit (process 76). ).

Furthermore, if the numerical data R is greater than or equal to 10 and less than 11, the lower digit operation unit 1 of the decimal point F state is subtracted from the numerical data R (
Process 77), shift the display digit and operation unit to the left (process 78, similar to the above-mentioned process 68), and in this state display numerical data R on LED2 and LE old (process 79)
.

Therefore, as shown in FIG. 8(E), if the decrease button 23 is pressed when the current display is 11, the value is decreased by 1 through processes 75 and 76, and the display becomes 10. Subsequently, when button 23 is pressed, the value is decreased by 1 and a decimal point is added through processes 77 to 79, and the display becomes 9.0. When button 23 is further pressed, the value decreases by 0.1 through processes 73 and 74, and the display becomes 8.
．． It becomes 9.

According to this embodiment, the following effects can be obtained.

That is, the two-digit numerical display unit 10 displays 99 to IO.
It is possible to automatically switch between displaying a two-digit integer part of ``9.9 to 0.0'' and displaying a one-digit integer part decimal part name of 9.9 to 0.0.

Therefore, the display range of numerical data can be 0 to 99, and in the range of 0 to less than IO, it can be displayed precisely as 080 to 9.9, and so-called two significant figures can be realized for display and numerical operation. Even when setting is performed by the section 20, accuracy at minute values can be improved without impairing the area width.

Also, to switch the display digits and decimal point of numerical data,
Since this is automatically performed by the digit position moving means 30, there is no need to perform manual operations depending on the numerical value each time the setting operation is performed, and the setting work can be performed efficiently.

Furthermore, as the digit setting of the numerical display section 10 is changed, the digit setting of the numerical operation section 20 can be automatically changed by the digit position moving means 30, so that the displayed numerical value and the button operation can be automatically changed for each digit. 3-4- without compromising operator visibility and operability.

In addition, the digit settings of the numerical operation section 20 are performed using each button 21 to 24.
Since this is performed by switching the operation unit by , it is possible to avoid problems such as complicated calculation procedures, and to easily realize stable operation.

Note that the present invention is not limited to the above embodiments,
It also includes the following modifications.

That is, in the embodiment described above, the numerical data determining means 35 and the digit shift control means 36 are provided as the digit position moving means 30, and the processing shown in FIGS. 4 to 7 is performed according to the button information. , the processing contents, execution means, etc. may be substantially the same, and may be changed as appropriate in implementation.

For example, the process of switching the number of displayed digits and the decimal point is not limited to the process executed in response to the operated button as described above, but also the process of determining the contents of a register when any button is operated, etc. It may be.

Alternatively, a method may be used in which the contents of the register are constantly monitored regardless of button operations, and when there is a change in the stored numerical data, processing is executed to display the optimum number of digits.

In such a case, the structure of a normal fixed-digit digital switch can be used as a structure for adding or subtracting numerical data in a register in response to button operations, and the present invention can be implemented easily and inexpensively.

Furthermore, in the case of right-shifting the digit position, the numerical value in the original lowest digit is rounded off and carried up, etc., but these can also be configured to simply be rounded down, and the adjusted numerical value Since there is no need to return the data to the register 31, the structure can be simplified.

Further, the number of digits displayed on the numerical display unit IO is not limited to two digits, but may be any number of digits of three or more. If a large number of digits are used, the decimal point may be configured to move over the entire digit width, but the decimal point may be moved only in a specific part of the digit width, or specific digits may be moved discretely. The configuration may be any other configuration, and may be set appropriately in consideration of visibility and the like.

Furthermore, the indicators 11 and 12 are not limited to LEDs.
Any device that can be visually recognized by electrical input, such as a CD or other display element, may be used, and a standardized semi-finished product module or the like may also be used.

In addition, the other components of the setting/display switch 5 may be selected as appropriate during implementation, and the existing structure for carrying etc. may be appropriately adopted, and the structure corresponding to operation 0N10FF and display 0N10FF may be changed as appropriate. Or it may be omitted.

In addition, the control device I of the present invention is not limited to the above embodiments, but can be applied to various control devices used for controlling injection molding machines, and can be applied to parts of the operation panel that require displaying and changing numerical data. It can be applied with great effect.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to automatically move the decimal point position and the display digit position in the numerical display section at the same time as the digit setting in the numerical operation section, so that sufficient numerical data can be obtained with a small number of display digits. The display range and display accuracy can be ensured. Therefore, it is possible to make maximum use of the limited space of the operation panel in the control device of the injection molding machine, to ensure high visibility and display accuracy.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a block diagram showing the overall configuration of the embodiment, FIG. 3 is a block diagram showing the configuration of the setting/display switch in the embodiment, and FIG. 4 to 7 are flowcharts showing the processing in the embodiment, FIG. 8 is a schematic diagram showing the display in the embodiment, FIG. 9 is a block diagram showing the control device of the injection molding machine, and FIG. FIG. 3 is a front view showing an operation panel of the control device. DESCRIPTION OF SYMBOLS 1... Control device, 2... Injection molding machine, 5... Setting/display switch which is a setting part, IO... Numerical display part,
11゜12... LED display, 20... Numerical operation unit, 21.22.23.27 8 4... Increase button and decrease button, 30... Digit position moving means, 31... Register , 32... Input/output control means, 33... Numeric value setting means, 34... Display control means, 35... Numerical data determination means, 36... Digit shift control means.

Claims (1)

[Claims] (1) A control device for an injection molding machine, which has a setting section that sets numerical data corresponding to the molding operation of the injection molding machine, and controls the molding operation of the molding machine based on the settings of the setting section, the setting The unit includes a register that holds the numerical data, and
an input/output control means for inputting/outputting numerical data held in the register based on an external command; a numerical operation unit increasing/decreasing the numerical data held in the register based on manual operation; An injection device comprising: a numerical display section for displaying numerical data; and a digit position moving means for moving the digit settings of the numerical display section and the numerical operation section according to the number of digits of the integer part of the numerical data. Molding machine control device.