JPH0688300B2 - Display of injection molding machine - Google Patents

Description

The present invention relates to a display device of an injection molding machine that visually displays various molding information on a display.

[Conventional technology]

Injection molding machines typically include CRTs, plasma displays, LEDs
A display device using a display device such as a display or an LCD display is provided, and various kinds of molding information, for example, molding condition data set by a setting panel and operation state data at the time of molding are displayed on the display device.

By the way, in the molding information displayed by such a display device, there is much data that belongs to know-how such as molding conditions and operating states, and an unmanned system is adopted in a factory using an injection molding machine. In many cases, important data may be stolen from the display. Further, in the unmanned system, continuing the display state of the display device as it is causes unnecessary energy consumption and causes a reduction in the life of the display device.

Therefore, the present applicant has proposed an improved display device in Japanese Patent Laid-Open No.
-111028 gazette and it solved this problem.

The display device disclosed in the publication includes a display canceling unit that cancels the display of the display unit when a setting operation by the setting panel is not performed for a certain time, and a display command signal, for example, a signal based on an operation of an arbitrary setting key on the setting panel. Or, it is equipped with display restoration means for restoring the display stopped by the abnormality occurrence signal from the abnormality monitoring circuit of the injection molding machine, thereby maintaining confidentiality, saving energy consumption and extending the life of the display. It is a thing.

[Problems to be Solved by the Invention]

However, the display device disclosed in the publication has the following problems to be improved.

That is, when the injection molding machine is operated, it is usually performed by a fully automatic operation or a manual operation operation, but the setting work of molding conditions and the like greatly differs depending on each operation mode.

The manual operation operation is performed during the molding test, during the start-up from the beginning of the molding operation to the transition to full-automatic operation, when the molding machine is stopped due to an abnormal signal, and when the fully-automatic operation is restored. In many cases, work is carried out while checking. For this reason, if the setting operation on the setting panel is not performed for a certain period of time, the display will be stopped even during the setting process, and the trouble of having to operate the setting key on the setting panel to restore the display each time is eliminated. Occurs.

On the other hand, in the fully-automatic operation, the setting work is often completed, and in most cases, the operator leaves the molding machine. However, at least a certain period of time has to elapse before the display unit 3 shifts to the display stop state, so that the unnecessary display state continues for a while, which saves energy, protects confidentiality, and extends the life of the display unit. It cannot be achieved completely.

An object of the present invention is to provide a display device in an injection molding machine that solves the problems existing in the conventional techniques.

[Means for Solving the Problems]

The display device 1 of the injection molding machine according to the present invention includes a setting panel 2
When the setting operation is not performed for a certain period of time T ₀ , the display stop function unit 4 for setting the display unit 3 in the display stop state and the display unit 3 in the display stop state for returning to the display state based on a predetermined condition. In constructing a display device including the display restoration function unit 5, a time changing function unit 6 is provided to make the fixed time T _{0 different} at least during fully automatic operation and manual operation of the injection molding machine. Is characterized by. In this case, it is desirable that the fixed time T ₀ is set longer in the manual operation operation than in the fully automatic operation.

[Action]

 Next, the operation of the present invention will be described.

According to the display device 1 of the present invention, the time until the display unit 3 shifts to the display stopped state by the time changing function unit 6 can be made different at least during the fully automatic operation and the manual operation operation. For example, by making the time T ₀ during fully automatic operation relatively short and the time T ₀ during manual operation relatively long, the optimum time T ₀ in each operation mode can be set.

〔Example〕

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

First, a block configuration of a control system including the display device 1 will be described with reference to FIG.

Reference numeral 10 is a controller having a computer function, and on its output side, an electromagnetic switching valve, an electromagnetic flow valve, which is a control target,
Various actuators including electromagnetic pressure valves and servo motors
Connect 11a, 11b ... 11n. The controller 10 has a built-in driver for driving each of these actuators. Furthermore, the display device 1 according to the present invention is connected to the output side of the controller 10. The display device 1 includes a display control unit 12 connected to the controller 10 and a display device 3 whose display is controlled by the display control unit 12.

A functional block diagram of the display controller 12 is shown in FIG. The display control unit 12 includes a display stop timer function unit 13 that resets (initializes) zero when any one of the setting keys of the setting panel 2 described later is operated. The timer function unit 13 is set with a fixed time T ₀ from the start of timing to the time up. Further, based on the time-up of the same function unit 13, the display of the display unit 3 is in a display stopped state, for example, the display unit 3
Display control function unit 14 including the function to turn off the display power supply
Each of these mechanical units 13 and 14 constitutes the display stop function unit 4.

Further, the display control unit 12 includes a time changing function unit 6 that changes the fixed time T ₀ set in the display canceling function unit 13. The functional unit 6 includes a time setting unit 15 for fully automatic operation and a time setting unit 16 for manual operation operation.
15 and 16 can set different times T ₀ . In this case, it is desirable to set the time T ₀ during the fully automatic operation to be relatively short and the time T ₀ during the manual operation to be relatively long. As another form of the time changing function unit 6, two (plural) display stop timer function units in which different times T ₀ are set may be provided and selectively used. Further, the concept of changing the time T ₀ includes the case where the time T ₀ is continuously changed to an arbitrary size. Each of the functional units 4, 5, 6, 13, 15, 16 described above may be configured by hardware such as a counter or a functional circuit, or may be implemented by software by a computer program.

On the other hand, in FIG. 1, the setting panel 2 is connected to the input side of the controller 10. The setting panel 2 has a function of inputting molding conditions such as speed, pressure, position, and temperature of each part of the injection molding machine to the controller 10 with a setting key, and the inputted molding conditions are written in the internal memory of the controller 10.

Further, an abnormality monitoring circuit 21 is provided to monitor the operating state of each actuator 11a, and when an abnormality occurs, send an abnormality occurrence signal to the controller 10 to activate an alarm or the like. Display control unit 12
Is also given to. On the other hand, from the setting panel 2 to the controller
Each of the setting key lines connected to 10 is connected to the input side of the OR circuit 22, and the output side of the OR circuit 22 is connected to the display control unit.
Connect to 12. The abnormality occurrence signal and the output signal of the OR circuit 22 become the display command signal Sb.

Next, a display method by the display device 1 will be described with reference to FIG.

First, when the power is turned on, a signal indicating full automatic operation or manual operation operation is displayed from the controller 10 by the display control unit.
Sent to 12, the corresponding time setting unit 15 or 16 is selected,
Based on this, the value of the fixed time T ₀ in the display stop timer function unit 13 is set (step 51). At the same time, the display stop timer function unit 13 in the display control unit 12 starts timing (steps 52 and 53). Since the functional unit 13 is preset with the time T _{0 to} be timed up, the display data is sent from the controller 10 to the display device 3 while keeping the time, and the display state is set. Therefore, in this state, the molding key can be input by operating the setting key of the setting panel 2 and written in the internal memory of the controller 10. At this time, if any of the setting keys is operated, the display stop timer function unit 13 is reset to zero via the OR circuit 22, and the display 3 continues the display (steps 54, 55, 56). Further, when the operation mode of the molding machine is changed from the manual operation operation to the fully automatic operation or from the fully automatic operation to the manual operation operation, the display stop timer function unit 13 is reset to zero.

On the other hand, when the setting input by the setting panel 2 is completed, the setting key is not operated, so that the display stop timer function unit 13 times up after the time T _{0 has} elapsed. Therefore,
The display stop signal based on this causes the display unit 3 to enter the display stop state (steps 57, 58, 59). After that, the injection molding machine can continue operation in the display suspended state based on the set molding conditions.

By the way, since the value of the time T ₀ is set to be relatively short in the case of fully automatic operation, after the setting work is completed, the automatic operation is started, and when the worker leaves the molding machine, Since the display unit 3 quickly shifts to the display suspended state, it is possible to more completely achieve energy saving, confidentiality protection, and longer life of the display unit. On the other hand, in the case of manual operation operation, the time T ₀ is set to be relatively long, so that even if it takes a long time to operate the setting key in the setting work, the display unit 3 may not shift to the display cancel state during the setting. Without it, setting work can be done smoothly.

On the other hand, in the case where the molding condition is changed due to disturbance or the like during the operation in the display stopped state, by operating any setting key on the setting panel 2, the display control unit is operated via the OR circuit 22. The display stop timer function unit 13 of 12 starts clocking, and the display unit 3 returns to the display state (steps 54, 55,
56). Therefore, the setting conditions can be changed by the setting panel 2.

In addition, when the molding environment changes due to disturbance or the like and an abnormality occurs in the molding operation, the abnormality monitoring circuit 21 outputs an abnormality detection signal, which causes the controller 10 to stop the molding operation and to output an alarm lamp and an alarm. Activate the buzzer. At the same time, the abnormality detection signal is given to the display control unit 12, the display stop timer function unit 13 starts timing, and the display device 3 returns to the display state (steps 57, 60, 61).

Although the embodiments have been described in detail above, the present invention is not limited to such embodiments. For example time T ₀
The setting of may be made possible from the setting panel through the controller. Further, when setting the time T ₀ , a plurality of values of the time T ₀ may be selected according to the contents thereof during the manual operation operation or the fully automatic operation.
In addition, the detailed configuration and method can be arbitrarily changed without departing from the scope of the present invention.

〔The invention's effect〕

As described above, the display device of the injection molding machine according to the present invention is provided with the time changing function unit that makes the fixed time until the display is in the display stopped state different at least during the fully automatic operation and the manual operation operation. Therefore, the following effects are achieved.

In the case of fully automatic operation, unnecessary time can be reduced as much as possible by setting a fixed time until the display is stopped, more complete confidentiality, energy saving, and longer display length. A longer life can be achieved.

In the case of the manual operation operation, by setting the certain time to be long, the display is stopped during the setting, and it is possible to eliminate the trouble of returning the display by the key operation each time.

[Brief description of drawings]

1 is a block circuit diagram of a control system including a display device according to the present invention, FIG. 2 is a functional block diagram of a display control unit in the control system, and FIG. 3 is a display method by the display device according to the present invention. flowchart. In the drawings, 1: display device, 2: setting panel 3: display device, 4: display stop function part, 5: display return function part, 6: time change function part

Claims (2)

[Claims] 1. A display stop function unit that sets the display unit to a display stop state when a setting operation of the setting panel is not performed for a certain period of time, and a display unit in the display stop state is displayed based on a predetermined condition. In a display device of an injection molding machine including a display return function unit for returning, a time change function unit for changing the fixed time at least during fully automatic operation and manual operation of the injection molding machine is provided. Characteristic injection molding machine display device. 2. The display device for an injection molding machine according to claim 1, wherein the fixed time is set to be longer in a manually operated operation than in a fully automatic operation.