JPH03203621A - Monitoring system for injection molding machine - Google Patents

Abstract

PURPOSE:To form surely a data base which is necessary for manufacturing management of an injection molding machine main body by gathering a disorder judging data of a working condition of an injection molding machine main body obtd. in a monitoring apparatus for the injection molding machine with a history data manually input by an operator accompanied with a data on an occurrence time. CONSTITUTION:After a history data gathering card 51 is inserted in a card writer 54, an operator inputs an operator code WHO, etc., in an index data memory MEM 11 and MEM 12 and successively after a mold is set in an injection molding machine main body 22A, an electric source of the injection molding machine main body 22A is energized. An electric source-on operating time, a mold exchange starting time, etc., are manually written in a history data memories MEM 1 and MEM 2. Then, while an injection molding is performed, when e.g. in a primary monitoring processing a CPU 36 judges that a disorder occurs on 'remaining on a cavity', 'a short mold' and 'a position deviation of a slide core', a career data on generated disorder with an occurring time is written in the history data memories MEM 1 and MEM 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an injection molding machine monitoring system, and particularly to a system that can further facilitate production control of injection molding machines.

[Summary of the invention]

The present invention enables an injection molding machine monitoring system to accurately monitor the operating status of the injection molding machine by collecting historical data including the operator's abnormality judgment results as well as the evaluation results from the injection molding machine monitoring device. can be grasped.

[Conventional technology]

Conventionally, for example, as a monitoring device for an injection molding machine that injection molds synthetic resin materials, as disclosed in Japanese Patent Application Laid-Open No. 60-39581, a video signal obtained by capturing an image of the injection molding machine body with a television camera is used. Based on this, a system has been proposed in which a change in brightness information occurring in an image represented by the video signal is used to determine whether or not the injection molding operation of the main body of the injection molding machine is normal.

This type of injection molding machine monitoring device, as shown in Figure 8,
The movable mold 2 of the injection molding machine main body l to be monitored is in pressure contact with the fixed mold 3 J1! In this state (this state is called a mold clamping state), an injection molded product is molded between the movable mold 2 and the fixed mold 3 by injecting synthetic resin material through the conduit 4.

This injection molded product adhered to the mold surface of the movable side mold 2 when the movable side mold 2 retreated to a position away from the fixed side mold 3 along the guide 5 (this state is called the mold open state). The mold is brought to the mold open position in this state, and then pushed out of the movable mold 2 by an ejecting pin (not shown) that is protruded from the rear of the movable mold 2 (this operation is called the ejecting motion).
.

Thus, when one injection molded product is taken out from the mold surface of the movable side mold 2, one cycle of the injection molding process (i.e., one injection molding cycle) is completed and the next injection molding cycle begins, and the movable side The mold 2 moves forward toward the stationary mold 3 and returns to the mold closed state in which it is in pressure contact with the stationary mold 3, and the injection molding cycle is repeated in the same manner.

The injection molding machine main body 1 having such a configuration is driven by a drive control signal S1 generated in a sequencer provided in the injection molding machine main body drive control device 6, but in reality, the injection molding machine main body l performs a mold opening operation. At some point, the injection molded product remains attached to the mold surface of the fixed side mold 3.
In some cases, the mold remains in the cavity, or a so-called "short mold" condition occurs in which part of the injection molded product is missing due to a lack of resin material, or the movable mold 2 may shift from its normal installation position and slide. Abnormalities such as core misalignment may occur.

In addition, after the ejecting operation, the injection molded product may remain in the movable mold 2 without being pushed down, resulting in a "defected drop" condition, or the ejecting pin may break when pushing the injection molded product down, resulting in a "pin broken" condition. Abnormalities may occur.

When such an abnormality occurs, if the abnormal condition is left untreated, it may damage the movable side mold 2 and fixed side mold 3 in the next injection molding cycle, or lead to secondary accidents such as defective products being molded. A monitoring device 7 is provided to monitor these abnormal occurrences.

The monitoring device 7 has a television camera 8, and inputs a video signal VD obtained by imaging the mold surface of the movable mold 2 of the injection molding machine main body 1 to the monitoring control device 9 (the video is sent to the monitor 10). ).

The monitoring control device 9 receives a sequence control signal IN representing the injection molding work process from the injection molding machine main body drive control device 6, and determines whether or not an abnormality has occurred in synchronization with the operation of the injection molding machine main body 1. The operation of the injection molding machine main body 1 is controlled by sending the monitoring control device OUT to the injection molding machine main body drive control device 6 based on the determination result.

As shown in FIG. 9, the monitoring control device 9 displays a plurality of mark patterns MK of a predetermined shape on a display screen DSP consisting of the image of the field of view FILD based on the video signal VD obtained from the television camera 8. Monitoring area Aj (j
= 1.2, ......N), and for each monitoring area Aj, check whether a change in brightness information has occurred in the monitoring area Aj at the timing after mold opening and before the opening and/or at the timing after ejection. By determining whether the injection molding operation is normal or not, it is evaluated for each injection molding cycle whether the injection molding operation is normal or not.

In reality, the image of the field of view FILD of the television camera 8 is displayed on the display screen of the monitor 10, and the mark pattern MK of the monitoring area Aj is positioned at the position determined by the cursor KO displayed so as to superimpose it on the image of the field of view. By setting the mark pattern MK in the video signal VD, brightness information is obtained by, for example, integrating the brightness of the signal portion corresponding to the monitoring area Aj, and an abnormality occurs based on the presence or absence of a change in this brightness information. Assess whether or not it was done.

Incidentally, if the brightness of the predetermined monitoring area Aj remains the same as the brightness of the mold surface at the timing after the mold is opened and before the mold is delivered, it is determined that the "cavity remaining" abnormality has occurred.

Furthermore, if the monitoring area Aj set for the tip of the injection molded product has the same brightness as the mold surface at the timing after mold opening and before mold delivery, it is determined that "short mold 2 abnormality has occurred."

Furthermore, if the brightness of the monitoring area Aj set at the end of the movable mold 2 is different from the brightness of the mold surface at the timing after mold opening and before delivery, a "slide core misalignment" error will occur. I rate it as being

Furthermore, when the brightness of the monitoring area Aj remains the same as the brightness of the injection molded product at the timing after mold opening and before ejection, and at the timing after ejection (from the brightness of the surface of the injection molded product after ejection, the brightness of the mold surface (When there is no change in brightness)
, it is determined that a "fall failure" error has occurred.

Further, when the monitoring area Aj set in the image of the ejecting pin becomes brighter than the brightness of the ejecting pin at a timing after the ejection, it is determined that the "bottle breakage" abnormality has occurred.

[Problem that the invention seeks to solve]

By the way, if an abnormality such as a "cavity remaining" abnormality occurs in the injection acid type cycle, the supervisory control bag fi9 sends a supervisory control signal OUT to the injection molding machine main body drive control device 6.
The injection molding machine main body 1 is temporarily stopped by supplying the injection molding machine body 1, and after the operator has removed the cause of the abnormality, a sequence control signal IN indicating that the injection molding cycle has been restarted is sent back to the supervisory control device 9. In this case, a response action such as restarting the monitoring operation is performed.

However, in practice, if the supervisory control bag W9 controls the injection molding machine main body 1 to stop in this way, the operating efficiency of the injection molding machine main body will decrease accordingly, and the details of the abnormality that has occurred and the number of times it has occurred will be reduced accordingly. If information such as occurrence frequency can be collected accurately, it is considered to be effective as management information for efficiently operating the injection molding machine main body l.

The present invention has been made in consideration of the above points, and it is possible to reliably monitor the occurrence of abnormalities in the injection molding machine to be monitored, and to apply effective management information that can be used for production management of the injection molding machine. The purpose of this paper is to propose an injection molding machine monitoring system that enables accurate sampling.

[Means for solving problems]

In order to solve this problem, the first invention obtains images of the surroundings of the mold of the injection molding machine main body 22K (K=A, B, C...) using the television camera 31. When an abnormality in the injection molding cycle of the injection molding machine main body 22 is determined based on the video signal VD that is displayed, code information representing the type of abnormality is determined together with occurrence time information. 1st
Injection molding machine automatic monitoring means 2 generated as historical data of
4A, a history data input means 24B that inputs code information representing the operating state of the injection molding machine body 22 along with occurrence time information as history data of 'W42 according to an operator's input operation, and first and second history τ- History data memory means MEM1, MEM2 that stores data every time it occurs
and

In addition to the configuration of the first invention, the second invention has a history data memory means that includes a card writer 54 connected to the injection molding machine automatic monitoring means 24A, and a history data memory IJ that is detachably attached to the card writer 54. It consists of a historical data collection card 55 having MEM2.

Furthermore, in addition to the configurations of the first and second inventions, a third invention provides that the history data memory means MEM1, MEM2 represent the number of times the injection acid was successfully injected as index data for the first and second history data. Normal product number information WHM
1 and/or abnormal product number information WHM2 are recorded.

[Effect]

The injection molding machine automatic monitoring means 24A is a television camera 3.
When the injection molding machine main body 22K (K=A, B, C...) malfunctions based on the video signal VD obtained from 1, this is automatically determined and the first history data is stored. The data is generated and stored in the historical data memory means MEMI and MEM2.

At the same time, the operator manually controls the operating state of the injection molding machine main body 22 as necessary.
The history data of the history data memory means MEMI, MEM
It is possible to write to 2.

In this way, the historical data memories MEM1 and MEM2 comprehensively collect information representing the operating state of the injection molding machine main body 22 for each occurrence, and as a result, production management that accurately represents the operating state of the injection molding machine main body 22 is performed. You can get information.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

[1] Structure of automatic injection molding monitoring unit In FIG. 1, 21 indicates the injection molding machine monitoring system as a whole, and a plurality of injection molding machine bodies 22 are monitored.
K (K=A, B, C...), injection molding machine monitoring device 23K (K=A, B, C...)
・) is provided.

Each injection molding machine monitoring device 23K (K=A, B, C...
...) consists of an injection molding machine automatic monitoring section 24A and a history data input section 24B, and the injection molding machine automatic monitoring section 24A controls the television camera 31 in the same manner as described above with respect to FIGS. 8 and 9. The video signal VD obtained from the video signal VD is supplied to the video data processing circuit 32 to be converted into video data, and is also supplied to the monitor 34 via the synthesis circuit 33, thereby displaying the image within the field of view FILD of the television camera 31 on the monitor 34. It is made possible to display.

The video data processing circuit 32 is connected via a bus 35 to a program memory 3 by a central processing unit (CPU) 36.
Data processing is executed according to the program in 7, and as a result, the monitoring area Aj (j=
1.2...N) brightness information data is sent to bus 35.
By importing the monitoring input data into the working memory 38 as monitoring input data and executing the monitoring evaluation processing program shown in FIG. 2, the corresponding injection molding machine main body 22K (K=A, BSC... Evaluate whether or not an abnormality has occurred.

The CPU 36 transmits the sequence control signal S1 given from the corresponding injection molding machine main body 22K to the control signal input/output circuit 40.
The timing of the injection molding process in the injection molding machine main body 22 is determined by importing data through the injection molding machine body 22, and the monitoring and evaluation processing program (Fig. 2) is executed in synchronization with the timing, and control is performed when an abnormality is determined. Signal input/output circuit 4
By supplying a monitoring control signal S2 from 0 to the injection molding machine main body 22K, the injection molding machine main body 22K is controlled to be in a stopped state.

A monitoring area Aj (j=1.2...
. . .N) and inputting setting data regarding the monitoring area Aj by the operator operating the operation input section 41.
In response to the input data, the CPU 36 superimposes the mark pattern MK and the cursor KO on the monitor 34 via the graphic control unit 42, and stores the evaluation data in the working memory 38.

When the CPU 36 starts the process of the monitoring and evaluation process program (FIG. 2) in step SPI, it proceeds to step SP2.
, the setting position of the monitoring area Aj is determined using the image of the field of view FILD of the television camera 31 displayed on the monitor 34 using the cursor KO, and the mark pattern MK stored in the working memory 38 is set. do.

In the case of this embodiment, the monitoring area Aj is divided into the X direction and mesh-like detection unit areas Rxy arranged in a mesh pattern in the X direction as shown in FIG. By integrating the brightness of each mesh-like detection unit region RXl', the video data processing circuit 32 forms brightness information data, which is stored in the working memory 38.

The CPU 36 sets the size of the mesh detection unit region Rxy in step SP3.

When the settings related to such monitoring area Aj are completed,
The CPU 36 gives a test operation command to the injection molding machine main body 22K as a monitoring control signal S2, whereby the corresponding injection molding machine main body 22K sequentially performs the mold clamping process (step 5P4).
), the injection process (step 5P5), and the mold opening process (step 5P6) are executed, and when the timing comes after the mold opening and before the injection, the monitoring area Aj (j=1 .2...
...N) is taken into the working memory 38 as primary monitoring test data.

After that, the CPU 36 waits for the injection molding machine main body 22K to execute the ejection process in step SP8, and when the timing after the ejection comes, in step SP9, the CPU 36 secondary-sources the brightness data of the monitoring area Aj from the video data processing circuit 32. Working memory 3 as monitoring test data
8, and in the subsequent step 5PIO, calculation of the determination exclusion area and its registration processing are executed.

Incidentally, this process changes the field of view FI of the television camera 31 every time the injection molding machine main body 22K executes an injection molding cycle.
When the position of the image projected on the LD is actually shifted due to parallel or rotational movement, this is to prevent this from affecting the judgment results. As shown, mark 1 on the image part of the mold surface.
And when the image part of the injection molded product is displayed so that 2 is generated with 3 in between, the data D is taken into the video data processing circuit 32 as a video signal VD.
As shown in Figure 4 (B), ATA1 captures data of normalized value "0" (representing darkness) corresponding to the brightness of 1 in the image part of the mold surface, and also captures the image of the injection molded product. When the brightness data of the detection unit area RXy corresponding to part K is data with a normalized value of "100" (representing brightness), the detection unit area Rxy where 3 is superimposed on the boundary
In this case, an intermediate value between the normalized values "0" and "100" (corresponding to the proportion of 1 and 2 in the video portion) can be obtained.

Therefore, if the determination data DATA2, which excludes the mesh detection unit area from which this intermediate normalized value is obtained as the determination exclusion area JO, is loaded into the working memory 38 as shown in FIG. 4(C), it is possible to Even if the position of No. 3 shifts as shown by the broken line 3X for each injection molding cycle, as long as the shifted position is within the judgment exclusion area JO, it can be prevented from affecting the judgment data DATA2.

In this way, the CPU 36 performs steps SPI to 5PIO (second
By executing the process shown in the figure), the initial settings for the injection molding cycle are completed, and the injection molding machine main body 22K is commanded to start the injection molding cycle.

At this time, the injection molding machine main body 22 is used to inject molded products one by one (this is called an injection molding cycle).
are sequentially executed, and in response to this, the CPU 36 starts monitoring the occurrence of the abnormality.

That is, after the CPU 36 executes the mold clamping process for the first injection molding cycle in step 5PII,
In steps 5P12 and 5P13, an injection process and a mold opening process are performed in sequence, thereby completing the first injection molded product manufacturing.

When the injection molding machine main body 1 is in the operating state after mold opening and before mold delivery, the CPU 36 takes in video data from the video data processing circuit 32 in step 5P14, and executes the primary monitoring process in the subsequent step 5P15.

In this primary monitoring process, the CPU 36 uses the brightness information data of the monitoring area Aj set on the mold surface to monitor the "cavity remaining" abnormality, "short mold" abnormality, and "slide core misalignment" abnormality. This is executed by comparing with reference data set in the working memory 38 in advance.

Next, in step 5P16, the CPU 36 determines whether the comparison result is normal or not. When a positive result is obtained, the CPU 36 moves to step 5P17, waits for the injection molding machine main body 22K to perform an ejection operation, and waits for the ejection operation to occur. At the timing of completion, the process moves to step 5P18 and the video data processing circuit 32 takes in the data after projection, and then
In step 5P19, the video data is taken into the working memory 38 to execute the secondary monitoring process.

In this secondary monitoring process, the CPU 36 determines whether the brightness information data obtained from the monitoring area Aj set at the position of the protruding bin has changed from the reference brightness information data preset in the working memory 38. In addition to determining the "bottle breakage" abnormality based on the brightness obtained by primary monitoring processing from the monitoring area Aj set at the position of the injection molded product that was attached to the mold surface at the timing after mold opening and before mold delivery. Based on the information data (Step 5P15
), and by comparing this with the data obtained in the secondary monitoring process in step 5P19, it is determined whether or not a "fall failure" abnormality has occurred.

In the following step 5P20, the CPU 36 determines whether or not the determination result is normal, and if it is normal, the process returns to step 5P11 described above to start execution of the injection molding cycle for the next injection molded product.

On the other hand, if a negative result is obtained in step 5P16 or step 5P20, the CPU 36 performs step S
The process moves to P21 and waits for abnormality recovery processing to be performed.

In this abnormality recovery process, the CPU 36 temporarily controls the injection molding machine main body 22K to a stopped state, waits for the operator to perform recovery work for the cause of the abnormality in this state, and returns to step 5PII described above when the recovery work is completed. to start the next injection molding cycle.

In the case of this embodiment, the injection molding machine main body 22K is provided with a safety case, and when an abnormality such as a falling failure occurs in the mold part, the operator opens the safety door of the safety cover and identifies the cause of the abnormality. The abnormality recovery work is completed by removing the injection molded product that has been damaged, and then closing the safety door, and the end of the abnormality recovery work is detected by a detection switch attached to the safety door. By transmitting this information to the CPU 36 via the sequencer, the CPU 36 performs steps SP21 to
Step 5 Move to PII.

[2] In addition to the above configuration for collecting M history data, an injection molding machine monitoring device 23K (K=A
, B, C...) are the injection molding machine main body 22K (
K=A, B, C...)) The history data regarding the injection molding cycle operation is collected from the ffW data memory MEM1 provided in the working memory 38 and the history data collection card 51 constituting the history data input section 24B. The data is collected in the history data memory MEM2 provided in the internal memory.

The history data input section 24B includes a history data input operation section 52,
It has a clock 53 and a card writer 54, and when the operator determines that it is necessary to write, he can manually input operating state data representing the operating state of the injection molding machine main body by operating the history data input operation section 52. . At this time C
The PU 36 converts this manually input operating status data into historical data in a predetermined format, together with the abnormality monitoring data automatically generated by the monitoring and rating processing program described above with reference to FIG. 2, and stores it in the historical data memory. It is stored in MEMI and MEM2.

The history data memories MEM1 and MEM2 sequentially store history data, that is, code data representing the presence or absence of an abnormal operating state of the injection molding machine main body, and code data representing the operating state, along with their occurrence time data, with addresses assigned in the order of occurrence time. First, the injection molding machine monitoring device 23K stores data indicating the presence or absence of an abnormal operating state.
Automatic monitoring data automatically detected by (K = A, B, C...) through its monitoring operation, and secondly, abnormal operation that cannot be automatically monitored by the injection molding machine monitoring device 23K. Manual monitoring data manually written by the operator regarding the status, thirdly monitoring device management data representing the operation of the injection molding machine monitoring device 23, and fourthly the injection molding machine monitoring device! Injection molding machine body 22K monitored by 23K
(K = A, B, C...) The system includes injection molding machine main body operation abnormality data in which the operator manually writes the state or operating state when the machine itself becomes abnormal operating state. As shown in Figure 6, each history item is managed by assigning a predetermined code number, and the history data C02CI, C2... is expressed using the code assigned to each history item. It is designed to store.

In FIG. 6, the automatic monitoring data constituting the first history item group is automatic monitoring data determined by the automatic monitoring operation in the injection molding machine monitoring device 23K, and has code numbers "O", "1", " 2”, “3”, “4”...
The history items ``remaining cavity'', ``short mold'', ``slide core misalignment'', ``defective drop'', ``broken pin'', etc. are sequentially assigned to ....

The manual monitoring data constituting the second history item group is manually input by the operator after confirming abnormal data that cannot be determined only by the video signal VD of the television camera 31, and is code number 30.31.32.・・・・・・
・Sequential history item "Minute scratches" (Visually confirmed by the operator as a minute scratch that does not cause a change in the brightness information of the mesh detection unit area R, (Fig. 3)) , "Discoloration" (Discoloration of injection molded product, which is visually confirmed by the operator), "Blind" (Injection molding material seeping out from the gap between the movable mold 2 and fixed mold 3 when the mold is in the clamped state) Then, the inspector visually confirms)... will be assigned.

The monitoring device management data constituting the third history item group is management data regarding the injection molding machine monitoring device 23K, and has code numbers 50.51.52.53.54.55.
・・・Sequential history item "Report clear"
(Delete the input data at the operator's discretion), "Move to setting mode" (Step S in Figure 2)
In P2, the CPU 36 sets the monitoring area Aj), "Move to monitoring mode" (operation input section 4
(Input when the monitoring mode designation key provided in step 1 is operated), "Cycle start" (step 5P)
21 (Fig. 2), when the safety door of the injection molding machine main body is closed, the detection switch is input, and at this time, the injection molding machine main body 22 shifts to the injection cycle) , "Hard error" (If a malfunction occurs in the hardware circuits such as memory and analog/digital conversion circuit inside the injection molding machine monitoring device 23, the CPU 36 self-diagnoses this and inputs it), "Unable to monitor" ( ``Primary and secondary monitoring processing to detect fall defect 2 (CPU 36 automatically inputs when monitoring cannot be performed twice because the difference in brightness information detected in steps 5P15 and 5P19 becomes smaller than a predetermined value. )... will be assigned.

The injection molding machine main body operation abnormality data that constitutes the fourth history item group consists of injection molding machine main body operation abnormality data that is written when the operation of the injection molding machine main body becomes abnormal, and includes code numbers 70.71... History items ``Injection abnormality'' (written by the operator when the sequencer of the injection molding machine performs self-diagnosis) and ``Discharge abnormality'' (also written by the operator based on the self-diagnosis of the sequencer)
is assigned.

Furthermore, the injection molding machine main body operation data constituting the fifth history item group is injection molding machine main body operation data representing the operating state of the injection molding machine main body 22, and has a code number range starting from code number "80". History item "Repair started" for
and "Repair completed" (written manually by the operator when repairing the injection molding machine), "Mold change started" and "Mold change completed" (written manually by the operator when the movable mold 2 and fixed mold 3 are replaced) ``Temperature rising start'' and ``Temperature rising completion'' (written manually by the operator when starting heating the heater in the injection molding machine main body 22), ``Power on'' and ``Power off'' (Injection molding machine 'T!1 Manually written by the operator when turning on and off the source),
"Automatic → manual switching" and "manual → automatic switching" (written manually by the operator when stopping and starting the injection molding machine) are assigned.

When the CPU 36 automatically determines an abnormality or when the operator determines that it is necessary to write historical data, the CPU 36 writes historical data (CO, C1, C2, etc.) as historical data (FIG. 5). The data representing the code number assigned to the clock 53 (Fig. 6) is
“Minute”, “second” data (Ho, Mo, So), (Hl,
MI, Sl), (Hz, Mz, St)...
・Along with the addresses AS o , AS + , A
St... is attached to the history data memory MEMl of the working memory 38 and the history data memory MEM of the history data collection card 51 via the card writer 54.
Write in 2.

Here, the history data collection card 51 is an IC card,
For example, one data collection card 51 is distributed to each operator for each day's work, and the operator attaches the data collection card 51 to the card writer 54 at the beginning of the work, and detaches the data collection card 51 at the end of the work.

In this way, the injection molding machine monitoring device 23K (K=A, B, C) is stored in the working memory 38 and the card writer 54.
The injection molding machine main body 22 that is to be monitored by ......)
The working memory 38 and the history are stored as history data in which the operating states of K (K = A, B, C... The data is stored in the historical data memories MEM1 and MEM2 of the data collection card 51.

In this embodiment, the history data stored in the history data memory MEM1 of the working memory 38 is transferred from the data transmission unit 56 to each injection molding machine monitoring device 22K (23A, 2
Transmission path 57K (5
7A, 57B, 57C, etc.) to the injection molding machine monitoring data processing device 58 configured as a host computer, and the injection molding machine monitoring data processing device 58 receives the transferred history data. By combining and storing the data in the injection molding machine monitoring data storage device 59, a monitoring database for the entire injection molding machine monitoring system 21 is created.

In addition, the injection molding machine monitoring data processing device 58 has a card reader 60, and each injection molding machine monitoring device 23K (2
3A, 23B, 23C...) card writer 5
By attaching the history data collection card 51 extracted from 4 to the card reader 60, the history data stored in the history data memory MEM2 (Fig. 5) of the history data collection card 51 is read and injection molding machine monitoring data is obtained. The data can be stored in the corresponding memory area of the storage device 59.

The history data memories MEMI and MEM2 (Fig. 5) are respectively attached with index data memories MEMII and MEM12 having the configuration shown in Fig. 7, and the index data includes an operator code WHO1 representing the name of the operator who performed the work, and manufacturing date data WHN. , mold code WHT representing the mold used, injection molding machine body 2 used
2K (22A, 22B, 22C...) Injection molding machine body code WHR5 Data on the number of normal products manufactured by a normal injection molding machine cycle WHMI and abnormality showing the number of products determined to be abnormal Product number data WHM
2 as index data, address BSo, BS
+ , BSz , BSs , BS4 and BS5 are attached and stored, so that the injection molding machine monitoring data processing device 58 applies them to the injection molding machine monitoring data storage device 59 as index data when disciplining the database. It is made to be obtained.

[3] In the configuration above the operation of the embodiment, the injection molding machine main body 22K (K=A,
When attempting to injection mold a target number of products using a predetermined mold using a predetermined mold, the operator inserts the historical data collection card 51 distributed to him or her into the card writer 54 before starting the work. After installing, use the history data input operation section 52 to input the index data memory MEM.
Operator code W on II and MEM 12 (Figure 7)
Input the HO1 manufacturing date data WHN, the mold code WHT of the mold to be used, the injection molding machine body code WHR of the injection molding machine body to be used, and then enter the injection molding machine body 22K (K = A, B After setting the mold to be used in the injection molding machine body 22K (K = A, B
, C, . . .), the heater is heated, and the injection molding operation begins according to the processing procedure of the monitoring and evaluation processing program (FIG. 2).

At this time, the power-on operation time, the changeover start time, the changeover end time, the temperature increase start time, and the temperature increase completion time are written into the history data memories MEM1 and MEM2 by manual operation via the history data input operation section 52.

When entering the monitoring and evaluation processing program (FIG. 2), the operator inputs the setting mode command operator (
After shifting the CPU 36 to the setting mode by operating the CPU 36 (not shown), the setting processing of steps SPI to 5 PIO is executed.

At this time, the CPU 36 writes the "time of transition to setting mode" into the history data memories MEM1 and MEM2.

By thus executing the processes of steps SPI to 5PIO, the mesh detection unit region R1 is set for the injection molding region Aj, and the determination exclusion region is registered, and the setting mode is ended.

At this time, the operator causes the CPU 36 to "transfer to the monitoring mode" by operating a monitoring mode command operator (not shown) of the operation input unit 41, and at this time, the CPU 36 writes the transition time to the history data memories MEMI and MEM2. .

Thus, the injection molding machine body 22K (K=A, B, C...
...) is the injection molding machine monitoring device W23K (K = A, B
, C...) starts the operation of the injection molding cycle while being monitored for the occurrence of an abnormality by executing the processing of steps 5PII-3P20 of the monitoring evaluation processing program (FIG. 2).

If no abnormality occurs in this injection molding cycle, the CPU 36 repeats steps 5P20 to 5PI.
By returning to step I, normal injection molded products can be discharged each time, and the CPU 36 adds "+1" to index data WHM1 representing the number of normal products in index data memories MEM11 and MEM12 each time. , the number of normal products is accumulated in the working memory 38 and the historical data collection card 51.

On the other hand, while executing the injection molding cycle 5 PII to 5 P20, for example, in the primary monitoring process of step 5 P15, the CPU 36 detects an abnormality regarding "cavity left", "short mold", and "slide core misalignment". If it is determined that an abnormality has occurred, the historical data of the abnormality that has occurred is stored in the historical data memories MEMI and M together with the time of occurrence.
Write to EM2.

At this time, the operator opens the safety door of the injection molding machine main body 22K (K=A, B, C...) in step SP21 to recover from the cause of the abnormality, and then closes the safety door to restart the new injection molding machine. Restore the injection molding cycle to a normal state.

At this time, the CPU 36 uses the historical data memories MEM1 and MEM1.
The number of abnormal products is stored in the working memory by writing history data representing "cycle start" together with the time of occurrence into EM2, and subtracting "-1" from the index data WHM2 representing the number of abnormal products in the index data memories MEMII and MEM12. 38 and the history data memories MEM1 and MEM2 of the history data collection card 51
It accumulates in .

In addition, in the secondary monitoring process of step 5P19, when a "drop failure" or "pin breakage" is detected, the CPU 36 stores the history data in the history data memory MEMI along with the time of occurrence.
and write to MEM2. At this time, the operator opens the safety door of the injection molding machine body 22 in step SP21 to perform abnormality recovery work, so when the work is finished and the operator closes the safety door, the CPU 36 stores the "cycle start" history data. It is written into the history data memories MEM1 and MEM2 together with the time of occurrence.

In this way, when performing the primary and secondary monitoring processing in steps 5P15 and 5P19, when the brightness difference becomes so small that monitoring cannot be performed due to deterioration of lighting, for example,
The CPU 36 determines that "monitoring is not possible", and at this time also enters a state of waiting for abnormality recovery processing in step SP21, and writes the occurrence of the abnormality together with the time of occurrence into the historical data memos IJMEM1 and MEM2.

Also, in the injection molding cycle of steps 5PII to 5P20, the injection molding machine monitoring device 23K (K-A, B, C...
When a malfunction occurs in the hardware circuit configuration of
The CPU 36 moves to step 5P21 and waits for the recovery process, and stores the history data representing the "hard error" together with the time of occurrence in the M history data memories MEM1 and M
Write to EM2.

In addition, there may be "minor scratches" on the injection molded products during the injection molding cycle of STEMP 5PII to 5P20.
When the operator visually confirms that there is an abnormality such as "burn" or "blinking", the operator inputs the corresponding history data along with the time of occurrence using the history data input operation unit 52. At this time, the CPU 36 Write the data and the time of occurrence to the historical data memories MEM1 and MEM2.

In addition, in the injection molding cycle, the injection molding machine body 22K
(K = A, B, C...) "Ejection abnormality", "
When an "emission abnormality" occurs, the operator inputs the corresponding history data along with the time of occurrence to the history data input operation section 52.
At this time, the CPU 36 inputs the historical data and its generation time into the historical data memories MEMI and M.
Write to EM2.

In addition, the injection molding machine body 22K (K=A, B, C...
) breaks down and the operator repairs it, the operator inputs history data indicating "start of repair" and "end of repair" along with the time of occurrence using the history data input operation unit 52, and the CPU 36 inputs the history data indicating "repair start" and "repair end". Write to historical data memories MEM1 and MEM2.

In this way, the injection molding machine main body 22K (K=A, B,
In order to stop C...), the operator actually has to press the automatic manual changeover switch (not shown) on the sequencer panel of the injection molding machine main drive control device 6 (Fig. 8).
When switching from the automatic switching position to the manual switching position, and conversely, when returning from the stopped state to automatic operation, the operation is performed such as switching from the manual switching position to the automatic switching position. At this time, the operator inputs history data indicating that the "automatic → manual switching" or "manual → automatic switching" operation has been performed from the historical data input operation section 52 along with the time of occurrence, and at this time, CPL! 36 stores the data in the historical data memory MEM.
Write to I and MEM2.

Injection molding machine body 22K (K=A, B, C...
), when the operator turns off the power switch of the sequencer, the operator inputs history data indicating that the "power off" operation was performed, along with the time of occurrence, from the history data input operation section 52, and at that time, the CPU 36 Write data to historical data memories MEMI and MEM2.

Thus, the historical data memory ME of the working memory 38
The history data memory MEM2 of the history data collection card 51 inserted into M1 and the card writer 54 contains automatic monitoring data automatically detected by the injection molding machine monitoring device 23K (K=A, B, C...). In addition, manual monitoring data indicating abnormalities found by the operator through visual inspection, monitoring device management data indicating the operating state of the injection molding machine monitoring device 223, and injection molding machine control data indicating abnormal operation of the injection molding machine main body 23. Main unit operation abnormality data, injection molding machine main unit 22K
The operation data of the injection molding machine main body representing the operation state of (K=A, B, C, . . .) can be collected in the history data memories MEM1 and MEM2 together with the time of occurrence.

When the data collected in this way is no longer needed,
The operator can clear the data by inputting a clear command from the history data input operation section 52. At this time, the CPU 36 stores the history data corresponding to "report clear" and its occurrence time in the history data memory in place of the cleared data. Can be written to MEMI and MEM2.

In this way, data regarding the operation of the injection molding machine main body 22K and the injection molding machine monitoring device 23 that monitors the injection molding machine main body 22K is collected together with the occurrence time into the history data collection card 51 attached to the working memory 38 and the card writer 54. The collected data is transferred from the working memory 38 via the data transmission section 56 to the transmission path 57K (K
=A, B, C...), the injection molding machine monitoring data storage device 59 of the injection molding machine monitoring data processing device 58
can be stored as a database.

As a result, in the injection molding machine monitoring data processing device 58,
It is possible to accurately grasp the operating status, abnormality occurrence status, etc. of each injection molding machine main body 22K (K = A, B, C...) incorporated in the injection molding machine monitoring system 21, and index data (Figure 7) allows you to reliably obtain management data such as statistics on work content for each operator, production date, mold, and injection molding machine body in the form of daily, weekly, monthly, and annual reports. In this way, it is possible to realize an injection molding machine monitoring system that can efficiently manage production as a whole.

[4] Other embodiments (1) In the above embodiments, the injection molding machine monitoring device 2
3K (K=A, B, C...), a history data input operation section for inputting data for collecting history data, separate from the operation input section 41 for setting monitoring conditions, etc. 52 is provided, however, the history data input operation section 52 may be integrated with the operation input section 41.

(2) In the above embodiment, when writing history data from the card writer 54 to the history data collection card 51, the history data is written to the working memory 38 at the timing when the history data is generated, and at the same time, the history data collection card 51 writes the history data to the history data collection card 51.
1, but instead, the data may be written at a predetermined timing thereafter, for example, immediately before the history data collection card 51 is removed.

(3) In the embodiment described above, the working memory 38
The history data accumulated in the history data memory MEM1 is sent to the transmission path 57K (K=A, B, C
...) to the injection molding machine monitoring data processing device 58 in an online manner.
0, only the path for reading history data into the injection molding machine monitoring data processing device 58 may be left.

(4) In the above embodiment, the display screen DSP (9th
Figure) Multiple monitoring areas Aj (j=1.2...)
-N) has been described, but instead of this, one monitoring area may be formed over the entire display screen DSP.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to collect abnormality judgment data obtained from the injection molding machine monitoring device regarding the operational status of the injection molding machine main body, along with history data manually input by the operator, along with occurrence time data. By doing so, it is possible to reliably create a database necessary for manufacturing control of the injection molding machine main body.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of an injection molding machine monitoring system according to the present invention, FIG. 2 is a flowchart showing a monitoring and evaluation processing program for the injection molding machine monitoring device, and FIG.
4 and 4 are route maps for explaining the monitoring operation by monitoring area Aj, FIGS. 5 to 7 are diagrams for explaining historical data, and FIG. 8 is a block diagram showing the schematic configuration of the injection molding machine monitoring device. 9 are route maps showing the relationship between video signals and monitoring areas. 21... Injection molding machine monitoring system, 22K (K
=A, B, C...)...Injection molding machine body, 23K (K=A, B, C...)...
- Injection molding machine monitoring device, 24A... Injection molding automatic monitoring section, 24B... History data input section, 31
・・・・・・Television camera, 36・・・・・・C
PU, 38... Working memory, 51...
...History data collection card, 52...Historical data input operation section, 53...Clock, 54...
... Card writer, 58 ... Injection molding machine monitoring data processing device, 59 ... Injection molding machine monitoring data storage device, 6o ... Card reader.

Claims (3)

[Claims] (1) Based on the video signal obtained by imaging the area around the mold of the injection molding machine body using a television camera, the injection molding machine an injection molding machine automatic monitoring means that generates code information representing the type of the abnormality as first history data together with occurrence time information when determining an abnormality in the injection molding cycle of the main body; a history data input means for inputting code information representing the operating state of the machine body as second history data together with generation time information; and a history data memory means for storing the first and second history data each time they are generated. An injection molding machine monitoring system characterized by: (2) The history data memory means is comprised of a card writer connected to the injection molding machine automatic monitoring means, and a history data collection card that is detachably attached to the card writer and has a history data memory. An injection molding machine monitoring system according to claim 1. (3) The history data memory means includes the first and second
Injection molding according to claim 1 or 2, wherein information on the number of normal products and/or information on the number of abnormal products representing the number of times injection molding was performed normally is recorded as index data for historical data of Machine monitoring system.