JPH0825218B2 - Molding machine controller - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding machine controller, and more particularly to a molding machine controller for controlling the temperatures of a plurality of controlled parts via a temperature adjusting part.

[0002]

2. Description of the Related Art Conventionally, for example, in an injection molding machine, a heating cylinder is divided into a plurality of parts (controlled parts), and temperature control is performed for each part. Each part is equipped with a temperature sensor (thermometer), and the controller reads the data from each temperature sensor, and the controller adjusts the temperature according to the control program in order to maintain the preset target temperature for each part. The temperature of each part is controlled via (for example, a driver circuit of an electric heater). ON for control operation
There are ON / OFF control, proportional control, PID control and the like. As the controlled portion, temperature control of the molding die and the like is performed in the same manner as in the heating cylinder.

[0003]

However, the controller of the above molding machine has the following problems. For example, in the above injection molding machine, when the heating cylinder or heater is replaced for repair or change of molding conditions, there is no particular problem if the replaced heating cylinder has the same division mode as before the replacement. When the number of temperature sensors increases or decreases, the control program of the controller must be changed, unlike the case where the cylinders are divided before replacement. It is almost impossible to change the control program on the user side. Moreover, changing the control program is not easy. Therefore, the operation of the molding machine must be stopped until the change of the control program is completed, resulting in a large economical loss. The present invention has been made in view of the above problems,
It is an object of the present invention to provide a controller of a molding machine capable of inputting a new control mode without changing the control program even when the controlled portion is changed.

[0004]

In order to solve the above problems, the present invention has the following constitution. I.e. more than one
The temperature of the divided respective units to degrees controller in the molding machine controller which <br/> controlled via a temperature adjustment unit, the categories and該被temperature control unit of the object temperature control unit to be subjected to temperature control Input means for inputting the control parameter, storage means for storing the section of the temperature- controlled unit and the control parameter input via the input means, and temperature input via the input means. you attempt to control a display for displaying in combination with each other partitioning and control parameters of the temperature control unit, to display the first division all possible temperature control of the object temperature controller as a first screen on the display, the wherein by entering the section of the temperature control unit to be subjected to temperature control from the input means
When the setting is made , the temperature is switched to the 2nd screen and set
Enables display of the division degree control unit, to the said control parameter from the input means is input tries to temperature control the
The control parameters corresponding to the categories of the temperature control unit are combined with each other and displayed on the second screen, and are stored in the storage unit, and the temperature is adjusted via the temperature adjustment unit based on the control parameters stored in the storage unit. And a control unit for controlling the temperature of the temperature- controlled unit to be controlled. In particular, the temperature controlled part is each part of the heating cylinder of the injection molding machine divided into a plurality of sections , and the control means corresponds to the section input from the input means on the second screen of the display. You may make it display each part of the said heating cylinder graphically. Further, the temperature controlled part may be used for temperature control of a plurality of molding dies incorporated in a molding machine.

[0005]

According to the above arrangement, the object system seller is to display a first first of all possible temperature control as the screen of the temperature control unit classification on the display, and tries to temperature control from the input means configuration by entering a section of the temperature control unit
Doing, control means, <br/> Ru to display sections of the object to be temperature controlled section from the first screen set the second conversion cut the screen Ete. The user inputs a from the control parameter input means Then, the control means the temperature to be subjected to temperature control
The control parameters corresponding to the categories of the temperature control unit are displayed on the second screen in combination with each other, stored in the storage unit, and stored in the storage unit via the temperature adjustment unit based on the control parameters stored in the storage unit. controlling the temperature of the temperature control unit. Therefore, a change in classification mode of the temperature control unit, only by inputting the control parameters corresponding to the classification of the temperature control unit to be subjected to temperature control via the input means at the first screen, It is possible to change the temperature control mode. In particular, the temperature controlled part is each part of the heating cylinder of the injection molding machine divided into a plurality of parts, and the control means controls each of the heating cylinders corresponding to the classification input from the input means on the second screen of the display. Configure parts to display graphically
With this , it is possible to intuitively understand each part of the heating cylinder for which temperature control is to be performed, and it is possible to immediately know each part that requires input of control parameters, which facilitates operation. Also, heat
As time control unit, by utilizing the temperature control of a plurality of molding die incorporated in the molding machine, which tries to temperature control via the input means and any modifications to the forming mold to be temperature controlled to be The temperature control mode can be changed only by inputting the control parameter corresponding to the temperature control section classification.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. In this embodiment, a heating cylinder of an injection molding machine and a molding die will be described as examples of the controlled parts. First, the configuration in the case of a heating cylinder (not shown) will be described with the block diagram of FIG. 1
Reference numeral 2 denotes a temperature adjusting unit, which is a driver circuit that adjusts power supply to an electric heater that heats a heating cylinder (not shown). The voltage applied to the electric heater is the manipulated variable. The heating cylinder is divided into a plurality of parts in the length direction, and each divided part (a controlled part, hereinafter referred to as a zone) can be heated by an electric heater. A temperature sensor (not shown) is provided in each zone so that the temperature can be detected. The controller 10 of the present embodiment adjusts the operation amount of the electric heater via the temperature adjusting unit 12 based on the data from the temperature sensor, and controls the temperature for each zone.

Reference numeral 14 is a keyboard which is an example of input means, and includes a numeric keypad for inputting numerical values. From the keyboard 14, control parameters (target temperature, heat retention temperature, etc.) can be input for each of a plurality of zones for which temperature control is to be performed. In addition, commands, control data and the like are input from the keyboard 14. Reference numeral 16 denotes a touch panel which is an example of an input unit, which is made of a transparent material and is arranged so as to cover a screen of a display described later. The touch panel 16 is provided with a large number of touch contacts, and at least a portion corresponding to the touch area displayed on the screen is provided with the touch contacts. By selectively closing the touch contact, it is possible to select an input item designated by the touch area displayed on the screen of the display and input corresponding numerical data from the keyboard 14. In this embodiment, the input items include identification of the zone for which temperature control is to be performed, control operation mode, proportional cycle, presence / absence of forced heat retention, presence / absence of heat retention during abnormal conditions, and the like.

Reference numeral 18 is a color CRT display.
On the display 18, a first screen displaying the identification of all zones whose temperature can be controlled and a part of the input items selected via the touch panel 16, and the touch panel 1
The other part of the input items selected via 6 are displayed, and the identification of the zone for temperature control input via the touch panel 16 and the control parameters input via the keyboard 14 are mutually performed. A second screen displayed in combination is displayed. Further, the zone selected for temperature control selected on the touch panel 16 is graphically displayed on the second screen together with the drawing of the heating cylinder. Further, the touch panel 16 is provided on each screen of the display 18.
It is possible to display a touch area of the input item selected via the, input data, data processed information, and the like.

Reference numeral 20 is a microprocessor (MPU) having a function as control means. The MPU 20 displays on the first screen of the display 18 the identification of all zones whose temperature can be controlled, and when the identification of the selected zone to be temperature-controlled is input via the touch panel 16, the second display of the display is displayed. The identification of the zone for which temperature control is to be performed is graphically displayed on the screen, and when each control parameter is input from the keyboard 14, the identification of the zone for which temperature control is performed and the corresponding control parameter are combined with each other to obtain the second parameter. While displaying on the screen, the control data is stored in the storage means described later, and the temperature of each zone is controlled via the temperature adjusting unit 12 based on the control data stored in the storage means. In addition, the MPU 20 controls each part of the injection molding machine including the controller 10 of this embodiment.

Reference numeral 22 denotes a RAM, which is an example of a storage unit, which stores the control data including the control parameters including the identification of the zone for temperature control, which is input via the keyboard 14 and the touch panel 16. In addition, RAM2
2 MP via the keyboard 14 and the touch panel 16
Various data input to U20, information processed by MPU20, calculation results, etc. are temporarily stored. RAM
Besides 22, an external memory such as an IC card may be used. Reference numeral 24 denotes a ROM in which a control program and control data for the controller 10 are stored in advance. Note that preset items such as identification of all predetermined zones and fixed values may be stored in the ROM 24 as a control program or control data. Further, the control data may be stored in advance in an external memory such as an IC card.

Next, an operation example will be described. First,
The system supplier operates the keyboard 14 and / or the touch panel 16 to input to the MPU 20 that control data for temperature control is to be input. Then, MPU20 R
The corresponding control program and data are read from the OM 24, the RAM 22 is cleared, and the first screen for input operation is displayed on the display 18 (see FIG. 2). The first
This screen is a screen for selecting a zone, etc., and is not normally used by the user, but is a screen used for setting work on the maker side when the heating cylinder is replaced. In FIG. 2, the above
Explaining the identification classification displayed on the screen of No. 1, the display "heating cylinder zone" indicates all zones of the heating cylinder, and the classification identification codes ("nozzle", "front part", "middle part") in the touch areas T1 to T8. , "Rear part", "ch5", "ch6",
“Displayed with“ ch7 ”and“ ch8 ”) is displayed. When selecting and inputting the zone whose temperature is to be controlled, the touch contact of the touch panel 16 corresponding to the touch area of the zone to be controlled is operated and designated.

The display "control action" indicates the control action in each zone, which is designated by the touch areas T9 to T11, and the identification category of the designated control action is displayed below the identification category of each zone. When the touch area T9 is designated, PID control is designated as the control operation. When the touch area T10 is designated, proportional control is designated as the control operation. When the touch area T11 is designated, ON / OFF control is designated as the control operation. The display "proportional cycle" indicates the time (cycle) applied to the electric heater by the temperature adjustment unit 12 in each zone, and is specified by the touch areas T12 to T16. The specified proportional cycle is identified by the control operation of each zone. Displayed below. When the touch area T12 is designated, the non-use of the thermometer (temperature sensor) is input, and the temperature control is not performed. When the touch area T13 is designated, the application cycle is set to 0.5 seconds. When the touch area T14 is designated, the application cycle is set to 1 second. When the touch area T15 is designated, the application cycle is set to 4 seconds. When the touch area T16 is designated, the application period is set to 28 seconds. In addition, the designation of "control action" and "proportional period" is first made in the touch area
A zone is selected at T8, and "control operation" and "proportional period" for the zone are designated.

The touch area T17 is used to select whether or not to control the temperature of the resin dropping port in the hopper for charging the resin material of the heating cylinder. When the touch contact corresponding to the touch area T17 is operated, the display of "use drop port" and "not use drop port" are alternately displayed. When "use drop port" is selected, the temperature of the drop zone can be controlled. On the other hand, if the "fall port is not used" is selected, the temperature of the drop zone cannot be controlled. When the PID control operation is selected, the touch area T18 selects whether or not the MPU 20 automatically calculates the PID constant. When the touch contact corresponding to the touch area T18 is operated, "auto tuning ON" and "auto tuning OFF" are displayed alternately. When "auto tuning ON" is selected, the MPU
20 automatically calculates the PID constant. On the other hand, when "auto tuning OFF" is selected, the MPU 20 does not calculate the PID constant. In the first screen of Figure 2,
Among the eight (8 channels) zones, the temperature control is set to be possible in four (4 channels) zones of “nozzle”, “front part”, “middle part”, and “rear part”. The above system
When the setting by the supplier is completed, the second screen used by the user is displayed. A second screen corresponding to the first screen of FIG. 2 is shown in FIG.

In FIG. 3, reference numeral 26 is a diagram of the heating cylinder,
Identification of the zone for temperature control specified on the first screen
It is graphically represented with the sections 28, 30, 32, 34. By seeing FIG. 26 of the heating cylinder, the operator can understand at a glance only the zones where temperature control can be performed. Next, on the second screen, the user side
The control parameters that can be input and displayed with
And explain. The display "target temperature" indicates the target temperature for temperature control in each zone, and touch areas T19 to T22
Is provided to set the target temperature. The target temperature is displayed numerically in each of the touch areas T19 to T22.
When inputting the target temperature, touch areas T19 to T2
Operate the touch contact of the touch panel 16 corresponding to 2,
The touch areas T19 to T22 to be input are designated, and the target temperatures are numerically input from the keyboard 14. The display "current temperature" indicates the current temperature detected by the temperature sensor in each zone, and is digitally displayed in the display area A1. The display area A2 is an area for displaying whether or not the corresponding zone is currently being heated, and can be identified by the color of the display area A2.

The display "state" indicates a temperature control state, for example, a control state such as "during screw cold start prevention". This display enables the operator to prevent a malfunction such as operating the injection screw in a cold state. The display "heat retention temperature" indicates the heat retention temperature in each zone, and the touch areas T23 to T26 are provided to set the target temperature. If the injection molding machine stops due to an error or the like, if the temperature of the heating cylinder is controlled at the target temperature, the resin in the heating cylinder may be overheated and decomposed. Therefore, it is necessary to keep the temperature of the heating cylinder at a temperature lower than the target temperature. This heat retention temperature is set. Insulation temperature is in each touch area T23 ~ T
Numerical value is displayed in 26. When inputting the heat retention temperature,
Touch panel 1 corresponding to touch areas T23 to T26
Touch area T23 for operating and inputting the touch contacts of 6
.About.T26 is designated, and the heat retention temperature is numerically input from the keyboard 14. The display area A1 has a display area A1.
The present temperature, which is digitally displayed numerically, is analog-displayed in the form of a bar graph. The touch area T19-
The target temperature numerically displayed in T22 is displayed by the pointer 36 beside the graph.

The touch area T27 is used to select whether or not to forcibly heat the heating cylinder at the above-mentioned heat retention temperature. When the touch contact corresponding to the touch area T27 is operated, the display of “forced heat retention ON” and “forced heat retention OFF” are displayed alternately,
When "Forced heat retention ON" is selected, each zone can be kept warm at the heat retention temperature. On the other hand, if "Forced heat retention OFF" is selected, forced heat retention is not performed. The touch area T28 is used to select whether or not to keep the heat of the heating cylinder when the above-mentioned keep temperature is abnormal. When the touch contact corresponding to the touch area T28 is operated, the display of "heat retention ON at abnormal time" and "heat retention at abnormal time OFF" is displayed alternately. If "warm temperature ON at abnormal time" is selected, each zone will display the heat retention temperature at the time of abnormality. It becomes possible to keep warm. On the other hand, if "abnormal heat retention OFF" is selected, abnormal heat retention is not performed. The inside of the display "oil temperature monitor" shows input items for monitoring the temperature of the hydraulic oil of the hydraulic system that drives the injection molding machine.

When various control parameters are input on the second screen, the control parameters are stored in the RAM 22. Then, when the temperature control start is instructed via the keyboard 14 or the touch panel 16, the MPU 20 is
The temperature control unit 12 is operated based on the control parameters stored in 22 to execute the temperature control of each zone of the heating cylinder. As described above, even when the heating cylinder is replaced in the injection molding machine of the present embodiment and the zone for temperature control is changed, the setting of the zone and the like can be changed on the first screen that can be displayed on the display 18 . Since the MPU 20 automatically displays the second screen with the changed contents and allows the control parameters and the like to be input only by inputting, there is no need to change the control program.

4 to 7 show the screens of the display 18 in the other case of this embodiment. A second screen for the first screen of FIG. 4 is shown in FIG. In this case, of the eight zones of the heating cylinder, temperature control is possible for seven zones from the nozzle direction at the tip. Therefore, the second screen (Fig. 5)
FIG. 38 of the heating cylinder graphically displayed includes seven touch areas T30 to T36 indicating zones. Since the size and the number of display areas in FIG. 38 are different from those in FIG. 3, the positions of various displays are moved. A second screen for the first screen of FIG. 6 is shown in FIG. In this case, since the touch area T17 is "use drop port", the temperature of the drop port zone of the heating cylinder can be controlled. Therefore, FIG. 40 of the heating cylinder which is graphically displayed on the second screen (FIG. 7) includes seven touch areas T37 indicating the drop zone.

Next, the first screen and the second screen that can be displayed on the display when the molding die is used as the temperature controlled part will be described with reference to FIGS. 8 and 9. On the first screen (FIG. 8), the touch areas T50 to T57 display the identification sections of all the molding dies. When selecting and inputting the mold whose temperature is to be controlled, the touch panel 1 corresponding to the touch area of the mold whose temperature is to be controlled
Operate and specify the 6 touch contacts. The display "proportional cycle" is the same as that shown in FIG.
Select from 8 to T62. The numerical value of the selected proportional cycle is displayed below the corresponding touch area T50 to T57.
On the first screen, set the temperature control mold to 8 in total.
Since the setting has been made, all of the mold identification categories “mold 1” to “mold 8” are also displayed on the second screen (FIG. 9) . Up
The control screen that allows the user to input and display on the second screen
The parameters and the display contents thereof will be described. Touch areas T63 to T70 are provided below the identification section display, respectively, so that a target temperature for heating the mold can be set.
The target temperature is displayed numerically in each of the touch areas T63 to T70. When the target temperature is input as the control parameter, the touch contact of the touch panel 16 corresponding to the touch areas T63 to T70 is operated to input the touch area T.
63 to T70 are designated, and the target temperature is numerically input from the keyboard 14.

The display "current temperature" indicates the current temperature detected by the temperature sensor in each mold, and is displayed numerically and digitally in the display area A4. The display area A5 is an area for displaying whether or not the corresponding mold is currently being heated, and can be identified by the color of the display area A5. In the display area A6, the current temperature of the die, which is digitally displayed in the display area A4, is analogically displayed in the form of a bar graph. The target temperature numerically displayed in the touch areas T63 to T70 is displayed by the pointer 42 beside the graph. Regarding the temperature sensor (thermometer), the control means may recognize the temperature sensor that is automatically operating and display only the temperature detected by the temperature sensor on the display. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments.For example, the controlled part is not limited to the zone of the heating cylinder or the molding die, and the temperature It goes without saying that many modifications can be made without departing from the spirit of the invention, for example, as long as the adjustment is performed.

[0021]

When the controller of the molding machine according to the present invention is used, the control means first displays the first screen on the display .
It is to display the classification of all of the temperature control unit capable Temperature control
So, when the enter set an indicator of the target temperature system <br/> control unit to be subjected to temperature control from the input means, cut into a second screen
Instead it is set can be displayed the division of the temperature control unit. Further, the input means from the control parameter when the inputted attempts to temperature control to the temperature control unit classification and corresponding control parameter the second in combination with each other of
And is stored in the storage means. Since the control means controls the temperature of the temperature- controlled part to be temperature- controlled via the temperature adjusting part based on the control parameter stored in the storage part, even if the temperature- controlled part is changed. , the division of the temperature control unit in the first screen
The control means displays the second screen only by inputting the setting change.
Switch to the screen and display it so that you can enter control parameters etc.
Therefore, it is not necessary to change the control program at all.
Yes. Accordingly, since the change of only the temperature control mode for inputting the control parameters corresponding to the classification of the temperature control unit via the input means to the first screen attempts to temperature control can be, downtime of the molding machine Can be done in a short time. In particular, each portion of the heating cylinder corresponding to the second screen first section set on the screen to display when the graphic display
, Together with the respective portion of the heating cylinder to be subjected to temperature control can be intuitively understood, exhibits remarkable effects such as an input is easily operated can immediately know the parts necessary control parameters.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a controller of a molding machine according to the present invention.

FIG. 2 is an explanatory diagram showing a first screen for input operation on a display.

FIG. 3 is an explanatory diagram showing a second screen for input operation on the display.

FIG. 4 is an explanatory diagram showing a first screen for input operation on another display.

5 is an explanatory diagram showing a second screen with respect to the first screen of FIG. 4. FIG.

FIG. 6 is an explanatory view showing a first screen for input operation of still another display.

7 is an explanatory diagram showing a second screen with respect to the first screen of FIG. 6. FIG.

FIG. 8 is an explanatory diagram showing a first screen for input operation of the display when the controlled part is a molding die.

9 is an explanatory diagram showing a second screen with respect to the first screen in FIG. 8. FIG.

[Explanation of symbols]

 10 Controller 12 Temperature Control Section 14 Keyboard 16 Touch Panel 18 Display 20 MPU 22 RAM 24 ROM

Claims (3)

[Claims] 1. A plurality of temperature-controlled parts of each part
In the molding machine controller for controlling via the temperature adjusting unit temperature, and input means for inputting the control parameters according to the classification and該被temperature control unit of the object temperature control unit to be subjected to temperature control, the storage means for storing the classification and control parameters of the object to be temperature controller input through the input means, classification and control of the temperature control unit to be subjected to temperature control input through said input means a display for displaying a combination of parameters from each other, the display first first screen as the temperature controllable all the display the classification of the temperature control unit, wherein the temperature control to be subjected to temperature control from said input means Ward of department
After inputting the minutes and setting , switch to the second screen and set.
Constant has been made possible display the classification of the temperature control unit, from the input means the control parameters are the the of the temperature control unit to be subjected to temperature control segment and corresponding control parameter combination the second mutually input Along with displaying on the screen, stored in the storage means, the control means for controlling the temperature of the temperature controlled portion to perform temperature control via the temperature adjusting portion based on the control parameter stored in the storage means, A molding machine controller, comprising: Wherein said target temperature control unit is a respective portion of the heating cylinder of the plurality of divided the injection molding machine, said control means, classification input from said input means to the second screen of the display 2. Each part of the heating cylinder corresponding to the above is graphically displayed.
Controller of the described molding machine. 3. The controller of the molding machine according to claim 1, wherein the temperature controlled unit is a plurality of molding dies incorporated in the molding machine.