JPH04336221A - Monitor apparatus of injection molding machine - Google Patents

Abstract

PURPOSE:To reduce setting operation for monitor and to properly use the monitor at an unstable operation time when an injection molding machine just rises and the monitor at a stable operation time. CONSTITUTION:A monitor mode setting device 1 for selecting at least two 'fixing' and 'automatic' modes to set the same is provided and the modes are set by an operator. A result value measuring device 3 measuring the result value during the operation of an injection molding machine, a result value memory apparatus 4 for storing the result value and a monitor value calculation apparatus 5 for calculating the set value in the 'automatic' mode are provided. The 'fixing' mode inputted by the operator and the 'automatic' mode calculated by the monitor value calculation apparatus 5 are inputted to a monitor value setting device 2 and the set value corresponding to the setting of the mode due to the monitor mode setting device 1 is outputted and a monitor apparatus 6 discriminates the abnormality of the injection molding machine on the basis of the outputted set value.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitoring device for an injection molding machine.

0002

[Prior Art] Conventionally, a molding material that has been heated and fluidized in a heating cylinder is injected into a mold at high pressure, cooled and solidified or hardened therein, and then the mold is opened to take out the molded product. In such injection molding machines, a monitoring device is provided in order to determine whether the molded product is good or bad or to determine whether there is an abnormality in the injection molding machine.

[0003] The above-mentioned monitoring device monitors different items depending on the purpose of monitoring, such as injection pressure in a specific state or a specific process, screw speed, metering time, filling time, cycle time of a series of processes, maximum cushion, minimum Cushions, etc. are monitored. In this case, the range of pressure, speed, time, etc. to be monitored is set in advance, and if each detected value exceeds the set range, it is determined to be abnormal, and the actual value for normal conditions. There is an automatic molding machine in which the injection molding machine memorizes the value and determines that there is an abnormality if the result is significantly different from that value.

0004

[Problems to be Solved by the Invention] However, in the conventional injection molding machine monitoring device described above, in the case of a setting type,
Determining the setting value not only requires deep experience with the monitoring content, but also requires complicated operations for setting. Furthermore, when starting up an injection molding machine, a large setting range must be created.

[0005] On the other hand, in the case of an automatic type, strict settings cannot be made, so the monitoring effect becomes low. The present invention solves the problems of the conventional injection molding machine monitoring device described above, reduces the setting operations for monitoring, and provides stable operation during unstable operation when the injection molding machine has just started up and during continuous molding. An object of the present invention is to provide a monitoring device for an injection molding machine that can be used for monitoring during operation.

[0006]

[Means for Solving the Problem] To this end, the monitoring device for an injection molding machine of the present invention includes a monitoring mode setting device for selecting and setting at least two modes, "fixed" and "automatic"; A performance value measuring device for measuring performance values during operation of an injection molding machine, a performance value storage device for storing performance values output from the performance value measuring device, and data stored in the performance value storage device. In response to this, the system has a monitoring value calculation device for calculating the set value in the above-mentioned "automatic" mode.

A monitoring value setter is provided which selectively receives the "fixed" mode setting value input by the operator and the "automatic" mode setting value calculated by the monitoring value calculation device, and One of the above setting values is output in response to the mode setting by the setting device. Also,
A monitoring device is provided that receives data from the performance value storage device and determines abnormalities in the injection molding machine based on set values output from the monitored value setter.

[0008]

[Operation] According to the present invention, as described above, a monitoring mode setting device is provided for selecting and setting at least two modes, "fixed" and "automatic", and the mode is set by the operator. . A performance value measuring device for measuring performance values during operation of the injection molding machine, a performance value storage device for storing performance values output from the performance value measuring device, and a performance value storage device for storing performance values output from the performance value measurement device; The monitor has a monitoring value calculation device for receiving the data and calculating the setting value in the "automatic" mode. In addition, from the above actual value storage device,
Data is output to a constant monitoring device.

A monitoring value setter is provided which selectively receives the "fixed" mode setting value input by the operator and the "automatic" mode setting value calculated by the monitoring value calculation device, and The setting device outputs one of the above setting values in response to the mode setting by the monitoring mode setting device. Further, a monitoring device is provided that receives data from the actual value storage device and determines abnormality in the injection molding machine based on the set value output from the monitored value setting device.

[0010] Therefore, in the "fixed" mode,
The data entered by the operator becomes the "Fixed" mode setting value and is sent to the monitoring device as is, but in the "Auto" mode, the "Auto" mode setting value is calculated based on the measured actual value, and the "Auto" mode setting value is ” mode settings are sent to the monitoring device.

[0011]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a control block diagram of a monitoring device for an injection molding machine according to the present invention. In the figure, 1 is a monitoring mode setting device that can set three modes: "off", "fixed", and "automatic". Mode setting is “off”
When in mode, no monitoring is performed, when in "fixed" mode, set type monitoring is performed, and when in "auto" mode, automatic type monitoring is performed.

When performing set-type monitoring, the range of pressure, speed, time, etc. to be monitored is set in advance, and if each detected value exceeds the set range, it is determined that there is an abnormality. Furthermore, when performing automatic monitoring, set values are automatically calculated based on past performance values. Reference numeral 2 denotes a monitoring value setting device, in which an operator inputs setting values for each monitoring item based on past experience in the "fixed" mode. Furthermore, in the case of the "auto" mode, automatically determined setting values are input. Therefore, a performance value measuring device 3 and a performance value storage device 4 are provided.

The actual value measuring device 3 measures the injection pressure, screw speed,
Measure actual values such as weighing time, filling time, cycle time of a series of processes, maximum cushion, minimum cushion, etc. Each value measured by the performance value measuring device 3 is sent to and stored in the performance value storage device 4, and is also sent to the monitoring device 6.
sent to.

Data regarding various monitoring items stored in the actual value storage device 4 is sent to the monitoring value calculation device 5 at predetermined cycles or all the time, and set values for the various monitoring items are determined based on the data. This is determined and sent to the monitoring value setter 2. This operation is selectively performed by an automatic/fixed signal corresponding to the mode selected by the monitoring mode setter 1.

Further, the monitoring device 6 determines whether or not to carry out monitoring based on the on/off signal sent from the monitoring mode setting device 1, and when monitoring is performed, the monitoring device 6 receives information from the actual value storage device 4 when monitoring is to be carried out. The actual value sent is compared with the set value sent from the monitoring value setter 2. Then, if the actual value is within the set range, it is determined to be normal, and if it is outside the set range, it is determined to be abnormal, and abnormality processing is performed.

In this manner, the monitoring mode setting device 1 allows selection of each mode of ``off'', ``fixed'', and ``automatic'', and in the ``fixed'' mode, the setting value set by the operator can be selected. directly to the monitoring value setter 2, and set it to "Auto".
In the mode, the monitoring value calculation device 5 is based on the actual value.
The set value calculated in step 1 is input to the monitoring value setter 2.

FIG. 2 is a state diagram of the set values when switching between each mode. In the figure, 11 is the “off” mode;
2 is the "fixed" mode, and 13 is the "automatic" mode. The setting value is maintained as is between "Off" mode 11 and "Fixed" mode 12, and between "Off" mode 11 and "Auto"
All set values are cleared between modes 13 and 13. Further, when the mode is changed from the "fixed" mode 12 to the "automatic" mode 13, the set value is cleared, and when the mode is shifted from the "automatic" mode 13 to the "fixed" mode 12, the set value is retained.

That is, in the "off" mode 11, no monitoring is performed. "Auto" mode 13 to "Off" mode 1
1, the set value of the monitored value setter 2 is cleared, and when the mode shifts from the "fixed" mode 12 to the "off" mode 11, the set value is not cleared. Furthermore, in the "fixed" mode 12, settings are made using the set values of the monitored value setter 2. When shifting from the "automatic" mode 13 to this "fixed" mode 12, the set value is maintained.

In the "automatic" mode 13, a setting value calculated by the monitoring value calculation device 5 based on past performance values is input to the monitoring value setting device 2, and monitoring is performed based on the setting value. When shifting from the "off" mode 11 and the "fixed" mode 12 to this "automatic" mode 13, the set value of the monitored value setter 2 is cleared. However, monitoring will not be performed until actual values are collected.

[0020] Each mode is used as follows. In other words, if you want to monitor passively, or if the injection molding machine has just been started up and its operation is unstable, select "Auto".
Set it to mode 13 and leave the monitoring value settings to the injection molding machine. In addition, if you are performing continuous molding and the operation is stable, or if you want to perform strict monitoring,
"Fixed" mode 12 is set, and the operator sets the set value by referring to the automatically calculated data.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and various modifications can be made based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[0022]

Effects of the Invention As described in detail above, according to the present invention, there is provided a monitoring mode setting device for selecting and setting at least two modes, "fixed" and "automatic", and an operation mode for an injection molding machine. a performance value measuring device for measuring the performance value in the performance value measuring device; a performance value storage device for storing the performance value outputted from the performance value measuring device; It has a monitoring value calculation device for calculating the setting value in the "auto" mode, and the "fixed" mode setting value input by the operator and the "automatic" mode setting calculated by the monitoring value calculation device. A monitoring value setter that selectively receives a value is provided, and outputs one of the above-mentioned set values in response to mode setting by the monitoring mode setting device.

[0023] Therefore, in the "fixed" mode,
The data entered by the operator becomes the "Fixed" mode setting value and is sent to the monitoring device as is, but in the "Auto" mode, the "Auto" mode setting value is calculated based on the measured actual value, and the "Auto" mode setting value is ” mode settings are sent to the monitoring device, so if you want to monitor passively, or if the injection molding machine has just been started up and its operation is unstable, the “
You can set it to "Auto" mode and let the injection molding machine set the monitoring values.

[0024] In addition, if you are performing continuous molding and the operation is stable, or if you want to perform strict monitoring, you can select "Fixed".
mode, and the operator can set the set values by referring to the automatically calculated data.

[Brief explanation of drawings]

FIG. 1 is a control block diagram of a monitoring device for an injection molding machine according to the present invention.

FIG. 2 is a state diagram of setting values when switching between each mode.

[Explanation of symbols]

1 Monitoring mode setting device 2 Monitored value setter 3 Actual value measuring device 4 Actual value recording device 5 Monitored value calculation device 6. Monitoring device 11 “Off” mode 12 “Fixed” mode 13 “Auto” mode

Claims (1)

[Claims] Claim 1: (a) a monitoring mode setting device for selecting and setting at least two modes, "fixed" and "automatic", and (b) a track record for measuring actual values during operation of the injection molding machine. (c) a performance value storage device for storing performance values output from the performance value measurement device; (d) receiving the data stored in the performance value storage device; (e) a monitoring value calculation device for calculating the setting value in the “Fixed” mode input by the operator;
a monitoring value setter that selectively receives the "auto" mode set value and outputs one of the above set values in response to the mode setting by the monitoring mode setter; and (f) data from the actual value storage device. A monitoring device for an injection molding machine, comprising a monitoring device for determining an abnormality in the injection molding machine based on the setting value outputted from the monitoring value setting device.