JP2917181B2 - Injection molding machine reporting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates relates to a warning apparatus for an injection molding machine, in particular a microcomputer (hereinafter, referred to as microcomputer) for controlling the entire machine in an injection molding machine having a self-diagnosis function, trouble ( It relates to the technology related to the notification device when an abnormality occurs.

[0002]

2. Description of the Related Art In a recent injection molding machine, a microcomputer built in a machine (injection molding machine) is configured to operate a preset operation condition value and a sensor group provided in each part of the machine in accordance with an automatic molding operation program. The continuous automatic operation is executed with reference to the measurement information. In such an injection molding machine with a built-in microcomputer, when the microcomputer determines that an abnormality has occurred in the measurement information from the sensor group,
The microcomputer refers to the case study data in advance,
A corresponding alarm message is displayed on the display device so that the operator of the machine can recognize the occurrence of the abnormality, and when it is determined that the content of the abnormality is a predetermined level or more, the machine is emergency stopped. ing.

In a manufacturing site where a large number of machines are installed, one operator (operator) often takes charge of, for example, about 10 machines. Central monitoring that connects the control unit of the room monitor display device with a cable and displays the machine in which the error occurred and an alarm message indicating the details of the error on the central monitoring display device when an error occurs Systems are also being developed.

[0004]

By the way, when the alarm message is displayed and the machine is stopped, in the case of the manned operation mode in which the operator can immediately run to the machine in which the abnormality has occurred, the operator takes measures to solve the trouble. Later, it can be expected that the operation will be restarted relatively early, but since there is no operator in the unmanned operation mode at night or on holidays, the machine will remain stopped until the operator comes to work, Decrease productivity. In addition, even when the above-described centralized monitoring system is applied, the display device that displays an alarm message indicating the content of the abnormality is installed in a monitoring room or the like in a factory. In the case of unmanned operation at night or on holidays when no operator with specialized knowledge capable of taking appropriate countermeasures is resident, the machine is similarly kept stopped until the operator comes to work.

[0005] The present invention has been made in view of the above points,
The purpose of the injection molding machine is to automatically notify the person in charge of the machine through a public telephone line when a machine trouble (abnormality) occurs while the machine is operating in the unattended operation mode. It is to implement a communication device .

[0006]

In order to achieve the above-mentioned object, the present invention provides a microcomputer incorporated in an injection molding machine based on various set operating condition data and measurement information from each sensor. and automatic operation control function for driving and controlling each part of, in the notification apparatus of an injection molding machine at least and a measurement information such as self-diagnosis function on the basis of performing the monitoring and diagnosis of abnormality occurs from the sensor, a predetermined level
When a trouble of more than
To a preset destination terminal number via a public telephone line
Has an auto-dial function to instruct
If the destination terminal is a telephone, the microcomputer
Generated to the destination terminal by the auto dial function
Information that indicates the nature of the trouble
Automatically send the fax and the destination terminal is a facsimile
If the microcomputer is connected to the
Indicates the content of the trouble that occurred on the destination terminal
Automatically send information as image data
Is configured.

[0007]

For example, a microcomputer has a function of automatically dialing a predetermined destination when a predetermined control signal arrives, and generates and transmits a voice synthesis message when a predetermined message creation command signal arrives.
Alternatively, a facsimile data modem is provided which has a function of automatically dialing a predetermined destination when a predetermined control signal arrives and transmits the print output signal as image data when a predetermined print output signal arrives.
If a machine trouble (abnormality) occurs while the machine (injection molding machine) is operating in the unattended operation mode, the microcomputer activates the automatic dial function incorporated in the voice synthesis transmission unit or the facsimile data modem. ,
A preset destination terminal (telephone or facsimile) is called, and then the arrival of an answer back signal or the like from the destination terminal is confirmed. If the destination terminal is a telephone, voice synthesis transmission is performed. When the destination terminal is a facsimile, the facsimile data modem transmits the alarm message print output data generated by the facsimile data modem as image data.

[0008]

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a block diagram schematically showing an injection molding machine according to one embodiment of the present invention. In FIG. 1, an injection molding machine generally indicated by reference numeral 1 includes a known mechanism such as a mold opening / closing device 2 and an injection device 3 and a microcomputer 4 for controlling the entire machine. Each of the drive units of the mechanism system is referred to through a driver group 6 by referring to an operation condition value set in advance and measurement information from a sensor group 5 disposed in each part of the machine by an automatic molding operation program. The source is driven and controlled. 7 is a microcomputer 4
A key input device as an input operation means for the microcomputer 4, a display device 8 comprising a color CRT display for displaying the processing results and the like by the microcomputer 4, and a printer 9 for printing and outputting the processing results and the like by the microcomputer 4.

Reference numeral 10 denotes a voice synthesizing transmission unit detachably connected to the microcomputer 4, which is connected to the public telephone network 20 and is automatically connected to a predetermined destination set in advance by the arrival of a predetermined control signal from the microcomputer 1. A voice synthesizing message is generated by the dialing function and the arrival of a predetermined message creation command signal from the microcomputer 1, and this voice message is automatically transmitted after confirming the arrival of an answer back signal such as a pickup signal from the destination terminal. Function. In the present embodiment, the voice synthesizing transmission unit 10 digitizes and stores a large number of types of alarm messages in an IC memory in advance. After being converted into a signal, the signal is output from a speaker. Note that the speech synthesis transmitting unit 10
It can be replaced with one having an auto dial function and another appropriate audio signal recording / reproducing function.

Reference numeral 11 denotes a facsimile data modem detachably connected to the microcomputer 4, which is connected to a public telephone line network 20, and which is automatically connected to a predetermined destination set in advance by the arrival of a predetermined control signal from the microcomputer 1. A function of dialing, and a function of automatically transmitting after receiving predetermined print output data in accordance with a predetermined format from the microcomputer 1 and confirming the arrival of an answerback signal such as a pickup signal from the destination terminal as image data. Is provided.

The microcomputer 4 actually has various I / Os.
An interface, a ROM for storing main control programs and various fixed data, a RAM for reading and writing various flags and measurement data, a CPU (Central Processor Unit) for overall control, etc. According to this embodiment, the molding condition setting storage unit 12, the molding process control unit 13, and the actually measured value storage unit 1
4, abnormality determination data storage unit 15, abnormality diagnosis unit 16, display control unit 17, printer control unit 18, external communication control unit 19
The following description will be given assuming that the device has such a functional unit.

The molding condition setting storage section 12 stores various molding condition values input by the key input means 7 or other appropriate input means in a rewritable manner. As the molding conditions, for example, the relationship between the screw position during the charge stroke and the screw rotation speed and back pressure,
Suck back control condition, injection speed condition subdivided from the injection start position to the pressure holding switching point (position) (primary injection stroke), subdivided holding pressure from the pressure holding switching time to the pressure holding end time Conditions, band heater temperature of each part, mold closing stroke and speed, mold clamping force, mold opening stroke and speed, eject control conditions, and the like.

The molding process control unit 13 fetches the measurement information from the sensor group 5 in real time based on a molding process control program created in advance and the setting condition values stored in the molding condition setting storage unit 12. While referring to the information from the measured value storage unit 14 and the timing information from the clock incorporated therein, drive control of each corresponding drive source via the driver group 6 (motor driver, control valve driver, heater driver, etc.) Then, a series of molding steps are executed.

The actual measured value storage unit 14 is configured to capture and store all actual measured values of preset monitor items during continuous automatic operation over a predetermined number of consecutive shots. ing. The monitor items to be taken are roughly classified into a time monitor item, a position monitor item, a rotation speed monitor item, a speed monitor item, a pressure monitor item, a temperature monitor item, a power monitor item, and the molding operation condition setting items described above. A considerable portion overlaps with this, and factors that will be related to the quality of the molded article and the abnormality determination are preset as monitor items.

The abnormality determination data storage section 15 stores an abnormal event, an abnormal numerical value, and the like, which have been subjected to a case study in advance. Then, the abnormality diagnosis unit 16 always takes in the data of the molding condition setting storage unit 12 and the data of the actually measured value storage unit 14 and refers to the contents of the abnormality determination data storage unit 15 to determine that no abnormality has occurred. Is automatically determined. Then, when the abnormality diagnosis unit 13 recognizes the occurrence of the abnormal situation, for example, an alarm is generated by a not-shown alarm generation device, and when the abnormality content is determined to be a predetermined level or more, this fact is notified. A signal is output to the molding process control unit 13 to cause the molding process control unit 13 to stop the machine in an emergency. Further, the abnormality diagnosis unit 16 transmits the alarm information to the display control unit 1.
7. The data is sent to the printer control unit 18 and the external communication control unit 19 to cause the units 17, 18, and 19 to execute processing as described below.

The display control unit 17 extracts data from the molding condition setting storage unit 12 and the actual measurement value storage unit 14 as necessary according to an image call command by an appropriate key operation of an operator, and converts the extracted data into numerical image data or graphic data. The data is converted into image data, and fixed data (for example, symbol / unit data, ruled line data, simplified graphic data, etc.) to be used for the image display is taken out from a fixed data storage unit for image display (not shown). To generate image data desired by the operator,
To be displayed. When an abnormal situation occurs, in response to the arrival of the alarm signal from the abnormality diagnosing unit 16, message information of a corresponding abnormal item is extracted from an alarm message storage unit (not shown), and is converted into image data. Forcibly display an alarm message.

The printer control unit 18 converts and fetches the image data created by the display control unit 17 in accordance with a print output command instructed by an appropriate key operation by an operator interactively with the display screen, and fetches the print output data. Or, if necessary, extract data from the molding condition setting storage unit 12 or the actual measurement value storage unit 14 and convert it to character data. Takes out fixed data (for example, symbol / unit character data, ruled line data, dot image data such as simplified graphic data, etc.) to be used for print output, and combines them to generate print output data desired by the operator. Then, this is printed out by the printer 9. Also, when an abnormal situation occurs, the alarm message image data created by the display control unit 17 is taken out by the arrival of the alarm signal from the abnormality diagnosis unit 16 and converted into print output data according to a print output format. This is transferred to the external communication control unit 19.

The external communication control unit 19 controls the voice synthesizing transmission unit 10 and the facsimile data modem 11 to automatically call a desired destination terminal 21 via the public telephone line network 20 and to output an alarm voice. The transmission of the data or the alarm image data to the destination terminal 21 is executed. That is, when an alarm signal of a predetermined level or more arrives from the abnormality diagnosing unit 16, the external communication control unit 19 activates the voice synthesizing transmitting unit 10 or the facsimile data modem 11 and sets the preset destination terminal 21 Is automatically called, and an alarm (abnormal) is given to the voice synthesis transmitting unit 10.
Recognizing the type (sending a predetermined type alarm message creation command signal) to generate a predetermined alarm sound,
Further, the alarm print output data from the print control unit 18 is transferred to the facsimile data modem 11. When the voice synthesizing transmission unit 10 or the facsimile data modem 11 calls the destination terminal 21 by the auto-dial function and confirms the arrival of the answer back signal from the destination terminal 21, a voice message or an alarm image indicating the details of the abnormality is displayed. Data is destination terminal 2
1 is transmitted.

Here, it is possible to arbitrarily set the level of abnormality (trouble) at which the calling of the destination terminal 21 and the transmission of alarm data are performed. Auto-dial at a level higher than the required level and send the details of the error.
Also, whether or not to send the details of the abnormality by auto-dialing when this abnormality occurs can be arbitrarily set according to the operation mode and the operation time of the machine.For example, when the unmanned automatic operation mode is selected, Alternatively, the automatic dial / abnormality transmission function can be activated when the vehicle is in the unattended automatic operation mode and during a time period outside of a holiday or working hours, and the external communication control unit 19 is provided with the operation mode discrimination function and calendar function. It can be easily realized by providing. The destination terminal 21 should be set to the home or outgoing telephone (including a mobile telephone) or a facsimile of a person in charge of handling the machine or an operator who is familiar with the operation of the machine. A plurality of terminals can be set.

In the above-mentioned configuration, for example, in a state in which the automatic dial / abnormality transmission function is set to operate in the unattended automatic operation mode and during a holiday or a time outside working hours, a machine trouble may occur on a holiday, for example. When the occurrence and emergency stop of the machine occur, the external communication control unit 19, which has recognized the occurrence of the abnormality by the arrival of the signal from the abnormality diagnosis unit 16, sets the unmanned automatic operation mode as the operation mode and operates during the off-hours. Then, the voice synthesizing transmission unit 10 or the facsimile data modem 11 is controlled to activate the automatic dial / abnormal contents transmission function. Now, when a telephone is set as the destination terminal 21, the voice synthesis transmission unit 10 is activated, whereby the voice synthesis transmission unit 10 calls the preset destination terminal 21, and subsequently, After confirming the pickup signal from the destination telephone, the alarm voice message created in accordance with the alarm (abnormal) type signal transmitted from the external communication control unit 19 as described above is automatically transmitted to the destination telephone. In the present embodiment, the voice synthesizing and transmitting unit 10 has a function of repeatedly redialing when the other party's telephone is communicating and a message several times in consideration of the fact that the other party's telephone is in the answering machine recording state. It has a function to repeat automatically. If a facsimile is set as the destination terminal 21, the facsimile data modem 1
1 is activated, whereby the facsimile / data modem 11 calls the preset destination terminal 21,
Subsequently, after confirming an answer back signal such as a pickup signal and a terminal identification signal from the destination facsimile, the printer control unit 18 transmits the external communication control unit 1 as described above.
9 to transmit the alarm print output data transferred to the destination facsimile.

By doing so, a machine trouble occurs in unmanned automatic operation, and the machine is stopped immediately,
Even when there is no operator in the vicinity of the machine, the machine itself can automatically inform the person in charge of handling the machine and the operator who has mastered the operation of the machine the contents of the machine trouble. Therefore, the operator or the like who has received the notification can quickly recognize the content of the trouble, call the guards or guards at night or on holidays, etc., and request a simple first aid measure, or in some cases, It becomes possible for the operator to go to the site and perform troubleshooting.
Therefore, even if the machine is stopped urgently during unmanned automatic operation, it is possible to take quick action and reduce the stop time of the machine as much as possible.

In the above-described embodiment, the case where the destination terminal is a telephone or a facsimile is shown. However, the destination terminal may be a portable receiver for radio calling (pager). Depending on the form of the pager, if the LCD is attached, LC
It is possible to display a simple message on the D display, and it is possible to recognize the occurrence of a machine trouble although the content of the trouble is unknown by being called as a type only for the calling function.

[0023]

As described above, according to the present invention, an unmanned automatic
Machine trouble occurs during operation and machine stops
Stop, even when there is no operator,
The machine operator is responsible for handling the
Pay phone calls to personnel or operators who are
It can be automatically notified via a line. Only
Voice message on the other party's phone
By or on the other party's facsimile
Since the data is transmitted as data,
It is possible to communicate the contents of the trouble in a form that can be understood
And the emergency contact has a network communication function
Even in a general household without a computer terminal,
Existing communication terminals (telephones or
Emergency contact using facsimile)
You. Therefore, during unmanned automatic operation without an operator,
Even if an emergency stop occurs, quick response is possible,
The downtime of the service can be reduced as much as possible.
The value of this type of injection molding machine in which unmanned operation is performed for four hours is great. In addition, ranking as a destination terminal
If multiple terminals are set, the first rank
Even if the hand terminal cannot be contacted,
It is possible to contact the person at the hand terminal and trouble
Increases contact reliability for processing.

[Brief description of the drawings]

1 is a schematic block diagram of the engagement Ru morphism molding machine to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection molding machine (machine) 2 Mold opening / closing device 3 Injection device 4 Microcomputer (microcomputer) 5 Sensor group 6 Driver group 7 Key input device 8 Display device 9 Printer 10 Voice synthesis transmission section 11 Facsimile data modem 12 Molding condition setting storage Unit 13 Molding process control unit 14 Actual measurement value storage unit 15 Abnormality determination data storage unit 16 Abnormality diagnosis unit 17 Display control unit 18 Printer control unit 19 External communication control unit 20 Public telephone network 21 Destination terminal

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) B29C 45/00-45/84 B22D 17/32 H04M 11/00 301 G05B 23/02

Claims (2)

(57) [Claims] An automatic operation control function for driving and controlling each part of the injection molding machine based on various set operation condition data and measurement information from each sensor; and a microcomputer incorporated in the injection molding machine. When a trouble of a predetermined level or more occurs in an injection molding machine having at least a self-abnormality diagnosis function for monitoring and diagnosing the occurrence of an abnormality based on measurement information from a sensor, etc.
Computer is pre-configured via a public telephone line.
Auto-dial to call the destination terminal number
It has a dial function unit, when the destination terminal is the phone, the micro
The computer causes the auto-dial function unit to automatically transmit information indicating the content of the trouble that has occurred to the destination terminal as a voice message, and, when the destination terminal is a facsimile, outputs the information .
The microcomputer is controlled by the auto dial function unit.
Te, automatically makes transmit the information indicating the contents of the trouble caused to partner terminal as image data, the injection molding machine of the report and wherein the. 2. The notification device for an injection molding machine according to claim 1, wherein a plurality of ranked terminals are set as the destination terminals.