JP2002172666A - Method of indicating temperature of injection molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate disadvantages such as restriction on indicated items and complication of a screen by dispensing with symbol figures and to accurately and quickly comprehend a state of operation and abnormality by knowing states of rise and fall of a measured temperature dynamically and by a sense, simultaneously with checking of the measured temperature. SOLUTION: On the occasion of indicating the measured temperature Ta... in an indicator provided for a control device 1 of an injection molding machine M, the measured temperature Ta... is indicated numerically and also the numerical indication is displayed with an individual color made to correspond to the kind of an operation mode in a temperature control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a temperature of an injection molding machine suitable for displaying an actually measured temperature on a display provided in the injection molding machine.

[0002]

2. Description of the Related Art Conventionally, as a temperature display method for displaying an actually measured temperature on a display provided in a control device of an injection molding machine, a display method of a temperature monitoring screen disclosed in Japanese Patent No. 30021312 is known. .

In the display method disclosed in the publication, when a display request for a temperature monitoring mode screen arrives, a symbol figure of a main temperature monitoring target portion and at least a target portion name of each temperature monitoring target portion are displayed on a color display device. In addition to displaying the temperature list including the measured temperature value and the set temperature value,
For the temperature monitoring target part currently under heating control, a color display indicating that the heating operation is being performed is performed on the corresponding part in the symbol figure, and for the temperature monitoring target part currently under cooling control, , A color display indicating that the cooling operation is being performed is performed on a corresponding portion in the symbol figure.

However, such a conventional temperature display method has the following problems.

First, since it is necessary to separately display a symbol figure, other display items in a screen of a limited size are restricted, and the size of displayed numbers and characters is reduced. Occurs, and the entire screen becomes complicated.

Second, for example, if the color of the symbol figure is red, it can be known that the heating operation is being performed, but only the current operation state can be grasped. Limited.

The present invention has solved the problems existing in the prior art, eliminates the need for a symbol figure, eliminates problems such as restrictions on display items and complication of a screen, and reduces the measured temperature. It is an object of the present invention to provide a temperature display method for an injection molding machine that enables the operating state and abnormality to be accurately and promptly grasped by dynamically and intuitively knowing the rising and falling state of the measured temperature at the same time as the confirmation.

[0008]

Means and Embodiments for Solving the Problems

According to the temperature display method of the injection molding machine M according to the present invention, when the measured temperature Ta is displayed on the display 2 provided in the control device 1 of the injection molding machine M, the measured temperature Ta is numerically displayed. The numerical display is displayed in different colors corresponding to the types of operation modes at the time of temperature control.

In this case, according to a preferred embodiment, the operation mode can include two or more of a heating operation mode, a cooling operation mode, and a non-operation mode, and the measured temperature Ta. Measured temperature T
a, the measured temperature Tb at the front of the heating cylinder 5, the measured temperature Tc at the middle of the heating cylinder 5, the measured temperature Td at the rear of the heating cylinder 5, the material dropping part 6
And one or two or more measured temperatures of the mold. In addition, on the temperature display screen 2d of the display 2,
A part or all of the appearance of the injection molding machine M is displayed on the graphic display unit 7, and a target temperature Sa, with respect to the measured temperature Ta,. Sb, Sc, Sd are displayed, the measured temperatures Ta are displayed in the vicinity of the target temperatures Sa, and the measured temperatures are displayed near the target temperatures Sa on the graphic display sections Ga, Gb, Gc, Gd. Can be.

Thus, simultaneously with the confirmation of the measured temperatures Ta, it is possible to dynamically and intuitively know the rising / falling state of the measured temperatures Ta, and it is possible to accurately and quickly grasp the operating state and abnormality. Further, since a separate symbol figure corresponding to each operation mode at the time of temperature control is not required, problems such as restrictions on display items and complicated screens are eliminated.

[0012]

Next, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

First, the configuration of an injection molding machine M that can execute the temperature display method according to the present embodiment will be described with reference to FIGS.

In FIG. 2, M indicated by an imaginary line is an injection molding machine, which comprises a machine Mb, an injection device Mi and a mold clamping device Mc installed on the machine Mb. The injection device Mi has a heating cylinder 5, has an injection nozzle not shown in the figure at the front end of the heating cylinder 5, and has a hopper 11 for supplying a material at the rear of the heating cylinder 5. Then, heaters 33a (see FIG. 3) using band heaters or the like are attached to the front, middle, and rear portions of the injection nozzle and the heating cylinder 5, respectively, to heat each part. The lower part of the hopper 11 is the material dropping section 6. Also, the side panel Mp erected on the machine base Mb
, A control device 1 including a display 2 is provided.

FIG. 3 shows a block diagram of a control system.
Note that the control device 1 shown in FIG. 3 extracts and shows only functional units that implement the temperature display method according to the present invention. Therefore, the control device 1 includes a CPU, a ROM, a RAM (not shown).
It has a computer function unit including basic elements such as.

The control device 1 includes a control device main body 21 to which the display 2 (touch panel 2i) is connected. The control device body 21 includes, as functional units related to the present invention, an image display data generation processing unit 22, a process data memory 23 for writing detection data of various sensors such as a position sensor, input / output information, analog information, etc. An image data memory 24 for storing data, a setting data memory 25 for storing various setting data such as molding machine operating conditions, an input processing unit 26 connected to the touch panel 2i, and an image memory 27 connected to the display 2 are provided. In this case, a color liquid crystal display capable of color display can be used as the display 2.

On the other hand, a plurality of temperature controllers 31a, 31b... Are connected to the control device main body 21, and thermocouples 32 are connected to the temperature controllers 31a, 31b.
a, 32b..., a heater 33a using a band heater, etc.
33b are respectively connected. When focusing on one temperature controller 31a, the temperature controller 31a, the thermocouple 32a, and the heater 33a form a set and are attached to a corresponding heating part, for example, an injection nozzle. This allows
The injection nozzle is heated by the heater 33a, and the measured temperature Ta detected from the thermocouple 32a is given to the temperature controller 31a.
Thus, the feedback control is performed so that the target temperature Sa is set in advance. The other temperature controllers 31b... Are similarly configured, and are respectively attached to the corresponding heating portions, that is, the front, middle and rear portions of the heating cylinder 5, the material dropping portions 6 below the hopper 11, and the dies. You.

Next, the temperature display method according to this embodiment will be described with reference to the flowchart shown in FIG.

First, the layout of the temperature display screen 2d is as shown in FIG. On the temperature display screen 2d, a part (or the entirety) of the appearance of the injection molding machine M is displayed by the graphic display unit 7, and the position corresponding to the part of the graphic display unit 7 where the measured temperature Ta is measured is displayed. The target temperatures Sa, Sb, Sc, and Sd with respect to the measured temperatures Ta are displayed. In this case, the part to be measured is a part to which the above-described thermocouples 32a are attached. Specifically, an injection nozzle for detecting the measured temperature Ta, a front part of the heating cylinder 5 for detecting the measured temperature Tb, The middle part of the heating cylinder 5 where the measured temperature Tc is detected, and the rear part of the heating cylinder 5 where the measured temperature Td is detected. Although illustration is omitted, the material dropping section 6 and a mold can be similarly implemented as measurement sites.

The current temperatures (measured temperatures) Ta, Tb, Tc, and Td detected from the thermocouples 32a are set in the vicinity of, preferably below, the target temperatures Sa.
Are displayed in correspondence with. Further, in the vicinity of, preferably below, the present temperature (actually measured temperature) Ta, the heat retention temperatures Ha, Hb, Hc, Hd are displayed in correspondence with the respective target temperatures Ta.
Is displayed in the vicinity of, preferably below, on the graphic display unit Ga, Gb, Gc, Gd, for example, in a bar graph shape.

On the other hand, at the time of temperature control, each temperature controller 31a... Performs feedback control on the temperature. The actually measured temperature data at that time is written to the process data memory 23, and the operation mode data corresponding to each operation mode during the temperature control, that is, the heating operation mode, the cooling operation mode, or the non-operation mode, is written to the process data memory 23. It is.

If the temperature screen display is selected by the touch panel 2i, data relating to the temperature display screen 2d is read from the image data memory 24. The setting data (target temperatures Sa...) Is read from the setting data memory 25, and the process data memory 23 reads
The actually measured temperature data (actually measured temperature Ta...) And the operation mode data are read out, and the image display data generation processing unit 2 respectively.
2 is given. The setting data and the measured temperature data are combined with the temperature display screen data in the image display data generation processing unit 22, and the combined image data is stored in the image memory 27.
Is written to. Then, the image data written in the image memory 27 is displayed on the display 2. The temperature display screen 2d in FIG. 2 shows an example of the displayed screen.

The display color of the measured temperatures Ta... For each operation mode at the time of temperature control is set in the image display data generation processing section 22, and the display of the measured temperatures Ta. Done. That is, the display of the measured temperatures Te is basically performed by the numerical display shown in FIG. 4, and the numerical display is displayed by different colors corresponding to the types of operation modes at the time of temperature control. Specifically, during the heating operation mode, the measured temperature Te
Are displayed in "red" (steps S1 and S2). In the cooling operation mode, the measured temperatures Te are set to “blue”.
(Steps S3 and S4). Further, in the non-operation mode, the measured temperatures Te are displayed in "yellow" (steps S5 and S6).

Therefore, according to the temperature display method according to the present embodiment, a separate symbol figure corresponding to each operation mode at the time of the conventional temperature control is not required, so that there are no restrictions on display items or characters. Of the temperature display screen 2d can be eliminated, and at the same time, it is possible to check the measured temperature Ta... At the same time as the rise and fall of the measured temperature Ta. Status and abnormality can be grasped accurately and promptly.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment,
The configuration, arrangement, quantity, method, and the like of the details can be arbitrarily changed, added, or deleted without departing from the gist of the present invention. For example, a color liquid crystal display is exemplified as the display 2, but various color image displays such as a CRT and a plasma display can be used.

[0026]

As described above, according to the temperature display method for an injection molding machine according to the present invention, the actually measured temperature is numerically displayed, and the numerical display is displayed in different colors corresponding to the types of operation modes at the time of temperature control. Therefore, the following remarkable effects are obtained.

(1) By eliminating the need for a symbol figure, problems such as limitations on display items and complication of a screen can be solved.

(2) At the same time as confirming the measured temperature, the rise and fall of the measured temperature can be known dynamically and intuitively, and the operating state and abnormality can be grasped accurately and promptly.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a part of a processing procedure of a temperature display method according to a preferred embodiment of the present invention;

FIG. 2 is a layout diagram of a temperature display screen displayed by the temperature display method,

FIG. 3 is a block diagram of a control device that performs the temperature display method;

FIG. 4 is a diagram illustrating the operation of the temperature display method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control device 2 Display 2d Temperature display screen 5 Heating cylinder 6 Material dropping part 7 Graphic display part M Injection molding machine Ta ... Measured temperature Sa ... Target temperature Ga ... Graphic display part

Claims (5)

[Claims] 1. A temperature display method for an injection molding machine for displaying an actually measured temperature on a display provided in a control device of the injection molding machine, wherein the actually measured temperature is numerically displayed, and the numerical display is operated in a temperature control mode. A temperature display method for an injection molding machine, wherein the temperature is indicated by different colors corresponding to the types of the injection molding machine. 2. The operation mode includes a heating operation mode,
2. The temperature display method for an injection molding machine according to claim 1, further comprising at least two of a cooling operation mode and a non-operation mode. 3. The measured temperature includes at least the measured temperature of the injection nozzle, the measured temperature of the front part of the heating cylinder, the measured temperature of the middle part of the heating cylinder, the measured temperature of the rear part of the heating cylinder, the measured temperature of the material dropping part, and the measured temperature of the mold. 2. The temperature display method for an injection molding machine according to claim 1, wherein one or more measured temperatures are included. 4. A part or all of the appearance of an injection molding machine is displayed on a temperature display screen of the display unit by a graphic display unit, and at a position corresponding to a part where the measured temperature is measured in the graphic display unit. 2. The temperature display method for an injection molding machine according to claim 1, wherein a target temperature corresponding to the measured temperature is displayed, and the measured temperature is displayed near the target temperature. 5. The temperature display method for an injection molding machine according to claim 4, wherein the measured temperature is displayed near the measured temperature on a graphic display unit.