KR960009316B1 - Injection mould watching assembly - Google Patents

Abstract

The apparatus continuously monitors exterior states of injection moulded products and the surface of the injection mould after dropping the products by using a microcomputer and an image processor. The apparatus comprises: three CCD cameras(5,6,7) taking pictures of a cavity(9') and a mould core(9) of the injection moulder(4); an analog monitor(2) and a key board(3) installed on a front panel of a main body(1); the image processor(10), an I/O interface(11), a personal computer 286 AT(12), and a key/font interface(13) installed within the main body(1).

Description

Mold monitoring device

1 is an installation diagram showing a mold monitoring device according to an embodiment of the present invention.

2 is a view showing the front plate of the main body of the mold monitoring apparatus of the present invention.

3 is a circuit diagram showing a mold monitoring value of the present invention.

4 is a flowchart for explaining a mold monitoring value of the present invention.

* Explanation of symbols for main parts of the drawings

1: Main unit 2: Analog monitor

3: key operation part 4: injection molding machine

5,6,7: CCD camera 8: simple robot

9: Core part 9 ': Cavity part

10: image processor 11: input / output interface

12: 286AT Computer 13: Key / Font Interface

14: I / O controller 15: font part

16: key controller 20: A / D converter

21: D / A Converter

[Technology Background]

Mold monitoring apparatus capable of automatically monitoring the life of injection moldings continuously by accurately monitoring the appearance state of the injection molding produced in the injection molding machine and the mold surface after the injection molding is dropped by using the 286AT computer and the image processor of the present invention. It is about.

[Prior art]

As science and technology is developed, various household goods have been developed and used, and the household goods are distributed and used in mass production according to factory automation using metals and synthetic resins by practical materials.

For example, in order to produce household goods of synthetic resins such as plastic, the injection molding machine installed in the corresponding production line is operated to repeatedly produce the injection molded product.

The injection molding machine manufactures the injection molding manually or automatically while reciprocating between the core part of the mold and the core part in which the cavity part is installed, the left and right reciprocating, which mechanically molds the injection molding. In the process, the injection molding is not dropped on the core part or cavity part, so that the current operation is stopped and the next action is required.

Therefore, the injection molding machine operates smoothly, and a dedicated mold monitoring device using a 4-bit or 8-bit CPU is installed to protect the injection molding and the mold, thereby monitoring the core part and the caviar part of the mold during injection molding.

However, the mold monitoring device not only monitors the core part and the cavity part of the injection molding machine so that the operator can recognize the part that cannot be recognized by one CCD camera, but also within the limited range of the input / output interface and the software. It was designed to solve production plan disruptions caused by product reliability, manpower shortages and mold accidents. This is a dedicated mold monitoring device using one camera and a 4 bit or 8 bat CPU, installed at the injection molding machine and operating at the same time. And the core part of the mold is difficult to monitor in the opposite direction of the long direction of the product, and the application and modification of the hardware or software in accordance with the specifications (e.g., the operator's operation level) required in the field during the installation of the equipment are not made quickly. There was a downside.

[Purpose of invention]

Therefore, the present invention is equipped with one to three CCD cameras, 286AT computer and image processor, unlike the conventional mold monitoring apparatus using one CCD camera and a CPU (4 or 8 bits), and displays the processing status of the analog monitor. Appearance and appearance of the injection molding produced in the injection molding machine and the surface of the mold after the injection molding are dropped by quickly and easily processing a wide range of applications and modifications to the various specifications required at the production site through data display and simple key operation. It is displayed as Korean data on the analog monitor through the three CCD cameras, so that the operator can easily monitor it accurately, and the problem of monitoring from one direction by the conventional CCD camera using three CCD cameras By monitoring three directions, including both the core side of the mold and the cavity side on the opposite side, it is possible to accurately recognize unrecognizable parts In addition, in order to provide a mold monitoring system that can be fully automated by operating the robot and injection molding machine in the case of defective injection molding, it is possible to solve the production plan due to the reliability of the injection molding machine, elimination of manpower shortage and mold accident. The purpose is.

[Configuration of Invention]

The mold monitoring device of the present invention for achieving the above object includes three CCD cameras (5, 6, 7) for photographing the mold core portion (9) and cavity portion (9 ') of the injection molding machine (4), and A main body 1 is provided which is operated simultaneously with the cameras 5, 6, 7 and the injection molding machine 4, and has an analog monitor 2 and a key control unit 3 mounted on the front panel. The processor 10, the input / output interface 11, the 286AT computer 12, and the key / font interface 13 are installed.

EXAMPLE

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

FIG. 1 shows a mold monitor according to an embodiment of the present invention. The mold monitor of the present invention is connected to a 286AT computer in the main body 1 with an image processor, an input / output interface, and a key / font interface. Analog monitor (2) and key control unit (3) is attached to the three CCD cameras (5, 6, 7) installed in the corresponding position of the injection molding machine (4) via a cable, the simple robot (8) ) Is installed around the injection molding machine 4, and the mold monitoring apparatus main body 1 is connected to a machine control for operating the injection molding machine 4.

The three CCD cameras 5, 6, and 7 are positioned at the corresponding positions so that the core part 9 and the cavity part 9 'of the mold installed in the injection molding machine 4 can be sequentially monitored, such as after dropping during molding. When the injection molding is performed, the bidirectional and cavity portions 9 'of the core part 9 are monitored in three directions as well as the image on the analog monitor 2 as well as the Korean data in progress. Displayed sequentially by the 286AT computer. Photographing using the CCD cameras 5, 6, and 7 outputs an electric signal whose brightness (contrast, gray level) value recognized by the internal photographing element to the analog monitor 2 in the main body 1 designated for each address. do. Here, the brightness value is processed by subdividing the intensity of white and black in 256 steps from 0 to 255.

Therefore, the mold monitoring apparatus main body 1 monitors the process of the injection molding machine 4 operated by the operator through the analog monitor 2 to produce the injection molding, which is a CCD camera (5, 6) When molding the furnace, the tubular state of the injection molded product is monitored, and the injection molded product is dropped again through the CCD cameras 5 and 6, and then the core and cavity portions 9 and 9 'of the mold are monitored, and the other CCD camera 7 is used. A series of monitoring processes are processed by the 286AT computer and the image processor to automatically repeat the production of the injection molding machine of the injection molding machine 4 while confirming the achievement amount, defect and failure rate according to the target amount of the injection molding through the analog monitor 2. Can be.

On the other hand, the mold monitoring device main body 1 is the injection molding machine (4) is continuously operated when the injection molding product input to the 286AT computer 12 is detected when the injection molding is defective during molding, the simple robot (8) The operation of the defective product in the bad direction, and even when the input, the specified number of consecutive failures and the case of the coincidence coincides with the simple robot (8), the injection molding machine (4) is stopped and at the same time alarm operation, the injection molding machine ( 4) and the simple robot (8) and the complete combination can achieve complete automation of the injection molding production.

As shown in FIG. 2, the mold monitoring apparatus main body 1 has an analog monitor 2 and a key operation unit 3 installed on its front plate. On the analog monitor 2, three CCD cameras 5, Do you modify the screen 2-1 according to the appearance of the injection molding photographed by 6, 7 or the key operation section 3 to be described later? Yes, No Are adjustments finished, or is it an error? Korean data such as whether to start driving is displayed so that you can easily know the working environment.

The key control unit 3 operates and stops the Tenkey 31, the power key 32, which are normally used to designate the target amount of the injection molding, the allowance rate, the drop time, and the predicted failure number. When you want to check and connect the function key (33), the progress selection and the left and right shift when the area and mark setting, the shift key (34) for moving, the selected yes, no Key 35, the turning key 36 to select the up, down, left and right range adjustment keys when setting the area range, and the monitoring area is set by pressing the monitoring area, that is, the position where the mark is stopped once, and pressing twice when the range adjusting key is set. The mark 38 is provided with an additional key 37, a camera LED (1-1, 2-1, 1-2-2, 2-2, 3), and a progression unit 38 for displaying a determination light emitting diode (amount, light). have.

The camera LEDs (1-1,2-1,1-2,2-2,3) light up when the corresponding screen appears on the analog monitor (2), and the camera LEDs (1-1,2-1) are CCD. The camera 5 monitors one direction toward the core part 9 and displays a screen shot. The camera LEDs 1-2 and 2-2 monitor the CCD camera 6 in the other direction toward the core part 9. The camera LED 3 displays a screen shot by the CCD camera 7 monitoring the cavity 9 'side.

3 is a circuit diagram showing a mold monitor of the present invention, wherein the mold monitor of the present invention is an image processor 10, an input / output interface 11, a 286AT computer 12, and a key / font interface 13 in the main body 1; ) Is configured.

The image processor 10 is largely composed of an A / D converter 20, a D / A converter 21, a parallel controller 22, and a RAM 23, and connects _three CCDs through the connectors CN _{1 to} CN 3. The cameras 5, 6, and 7 are connected to the analog monitors 2 through the connectors CN ₄ , respectively.

Port (PT _2), a bar, a 286AT computer 12 is greatly CPU (24), ROM (25), RAM (26 which is connected in 286AT computer 12 to the port (PT ₁₎ of the image processor 10 And a floppy disk driver 27 are connected to the port PT ₃ of the key / font interface 13 through the port PT ₃ .

The key / font interface 13 is largely composed of an input / output controller 14, a font unit 15, and a key controller 16, and the input / output interface (CN ₁₀ ) of the key / font interface 13 is connected to the key / font interface 13. 11) of the connector (CN ₈ ) of the injection molding machine (4), CN ₆ of the injection molding machine (4) through the other connectors (CN ₆ , CN ₇ , CN ₉ ) The progression part 38 is connected, respectively. A connector (CN ₁₂₎ of the key operation unit 3 to the connector (CN ₁₁₎ of the key Chezy / font interface 13 is connected.

The image of each position (e.g. after molding and after falling) shown on the mold surface in the injection molding machine 4 shown in FIG. 1 is taken as an analog signal in the order already set by the three CCD cameras 5, 6 and 7. It is sequentially supplied to the image processor 10 through the connectors CN _{1 to} CN ₃ . The image processor 10 converts the analog signal into a digital signal through the built-in A / D converter 20, and stores the same in the RAM 23, and via the parallel controller 22 and the port PT ₁ 286AT. It is backed up in the floppy disk of the floppy disk driver 27 in the computer 12.

The data stored in the RAM 23 is related to the actual operation, and the data backed up in the floppy disk prevents the trouble of having to reset the normalized image when the preset standardized image data is restarted and operated after power failure or equipment off. do.

The image signal converted into digital by the image processor 10 is converted into an analog signal by the D / A converter 21 and sent to the analog monitor 2 through the connector CN ₄ from time to time to play on the screen, As it is displayed, the operator operates the mold monitoring apparatus main body 1 and the injection molding machine 4 while recognizing this.

Therefore, the 286AT computer 12 stores the digital signal (initial image) transmitted through the port PT ₂ in the floppy disk of the floppy disk driver 27 designated by the CPU 24 and the ROM 25 as a standard image. do.

The signal (compared image taken under the same conditions as the initial image) transmitted to the 286AT computer 12 while the mold monitoring apparatus main body 1 is operating is an initial image (standard image) stored in the floppy disk and the RAM 26. And 1: 1 for each address, the key / font interface 13 is connected to the 286AT computer 12 via ports PT ₃ and PT ₄ , and then the key operation unit 3 shown in FIG. When the operator sets the target amount of the injection molding, the allowance rate, the drop time and the failure predicted number data by the corresponding key operation of the key operation part 3, the data are sequentially connected to the connector CN ₁₂ , CN ₁₁ , The key / font interface 13 and the ports PT ₄ and PT ₃ are stored in the RAM 26 of the 286AT computer 12.

Accordingly, the image processor 10 determines and processes abnormality (badness) when the brightness value of the normalized image and the brightness value of the comparative image do not match, and the comparator of the brightness value is set when setting the standard screen on the analog monitor 2. An error can be given arbitrarily, and this is done by adjusting the tolerance shown on the screen of the analog monitor 2.

The key / font interface 13 is connected to the port PT ₃ of the 286AT computer 12 via the port PT ₄ , and the font unit 15 of the key / font interface 13 is operated at the time of the program operation. The requested character (for example, screen 2-1 Do you want to modify ?, Hangul data about No) is sent to the image processor 10 through the designated port, and the character is displayed on the analog monitor 2 via the connector CN ₄ . It is displayed so that the operator can recognize it.

Connector to the key controller 16 has a key operation unit 3 a signal (target rate, acceptable rate, fall time and poor be expected) input in shown in FIG. 2 installed in the key / font interface (13) (CN ₁₂ , the role that when supplied through the CN ₁₁₎ transmitted to the 286AT computer 12, and the input-output controller 14 has an input or output interface 11 through a connector (CN _10, CN _8), port (PT _4, PT ₃ Through the 286AT computer 12, respectively.

Wherein the injection molding machine (4) the input-output interface 11 is provided through a connector (CN _6, CN _u), connectors are simple robot (8) through (CN _7), connector (CN _9), the key operation (3 through By connecting the progress portion 38 of the), the machine controller PLC of the injection molding machine 4 and the commands of the 286AT computer 12 and the signals received from the machine controller communicate with each other, and an abnormal situation occurs. When the 286AT computer 12 gives a command to the input and output interface 11 to stop the injection molding machine (4) through the connectors (CN ₆ , CN ₅ ) or to operate the simple robot (8) through the connector (CN ₇ ) Defective products will be sorted.

Accordingly, the input / output interface 11 receives a specific signal required by the 286AT computer 12 among the signals output from the machine controller built in the injection molding machine ₄ and receives the image processor 10 through the ports PT _{4 to} PT ₁ . ), And receives the control signal output from the 286AT computer 12 to control the machine controller of the injection molding machine (4). In addition, the camera LEDs (1) of the simple robot (8) and the moving unit (38) are received from the signals output from the 286AT computer (12) for controlling the moving unit (38) of the simple robot (8) and the key operation unit (3). Activate -1,2-1,1-2,2-2,3) and the judgment LED (both light and fire).

When the 286AT computer 12 is normally operated, the progress of the CCD cameras 5, 6 and 7 operating in each direction of the injection molding machine 4 is performed. -1,2-2,3) turns on and flashes in sequence, and when the camera defect occurs, the monitoring CCD camera of the angle where the defect occurs is displayed. As described above, when the camera LED shown in FIG. 2 proceeds sequentially, the determination LED (quantity) turns on when the progress state is normal, and the position LED of the CCD camera that detects the defective part when the progress state is abnormal. And judgment LED (light) turn on.

4 is a flow chart for explaining the mold monitor value of the present invention, the mold monitoring device of the present invention is the main body 1 as shown in FIG. 5,6,7) in the state of the injection molding process (molding, after the drop) in the installed state, the core part 9 and the cavity part 9 'of the mold is automatically monitored to produce the injection molding repeatedly in the core The bidirectional side of the part 9 and the one direction of the cavity part 9 'are monitored for a total of three directions on the analog monitor 2 under the control and control of the image processor 10 and the 286AT computer 12. Progressive Hangul data is displayed sequentially so that you can perform mold work while recognizing it.

First, the mold monitoring apparatus main body 1 and the injection molding machine 4 are operated at the same time, and the core part 9 and the cavity part 9 'of the mold are repeatedly operated in the injection molding machine 4 to produce the injection molding. The process is monitored by three CCD cameras 5, 6 and 7 (three directions including the core side of the mold and the opposite cavity side), and the data from the CCD cameras 5, 6 and 7 The image data after the drop is displayed on the analog monitor 2 of the main body 1 through the image processor 10 and supplied to the 286AT computer 12. The 286AT computer 12 manages the operation of the injection molding machine 4, the simple robot 8, the key control unit 3, and the like through the input / output interface 11 and the key / font interface 13.

In the 286AT computer 12, the initial storage operation (1 to 3 camera position adjustment) is completed through the three CCD cameras 5, 6, and 7, and then the target injection molding is performed with the ten key 31 of the key control unit 3. Entering the amount of work (for example 50) is stored in the RAM 26 through the key controller 16 of the key / font interface (13). The target amount of work 50 is input, and then, for example, 90 is input to the 286AT computer 12 at 100% according to the precision of the injection molding through the key control unit 3 (where detailed or general monitoring degree is set). After the allowance of 90 is entered, the time for which the molded injection molding leaves the core part 9 and the cavity part 9 'of the mold is determined by the key control part 3 according to the degree of the injection molding. Enter the fall time in seconds.

Subsequently, the 286AT computer 12 inputs, for example, five defective numbers for the operation of the simple robot 8 through the input / output interface 11 and the stop command of the injection molding machine 4 to the key control unit 3, In practice, the injection molding machine 4 stops the operation when the injection molding machine 4 is equal to the consecutively set defective number of the defects.

Accordingly, the 286AT computer 12 stores 50 target injection molding operations, 90 tongue tolerances, 2 seconds of fall time, and 5 defect data in the RAM 26 by the operation of the key operating section 3 in sequence. Then, each time the injection molding machine 4 starts to operate, the corresponding Hangul data (completion, target, achievement, defective and defective rate data, etc.) is displayed on the analog monitor 2 connected to the image processor 10.

Select the parts to be monitored in both directions while the CCD camera 5 and the other CCD camera 6 stop the ejector operation on the finished product in the core part 9 of the mold of the injection molding machine 4, respectively. When inputted, the initialization image is stored in the RAM 23 through the A / D converter 20 of the image processor 10. After the ejector operation, the injection molding drops, and the cavity 9 of the mold opposite to both directions of the core 9 of the mold, with the mold monitoring device main body 1 stopping the mold closing operation. When each direction is selected and inputted, the initialization image is stored in the RAM 23 of the image processor 10.

Do you modify screen 1-1 on the analog monitor (2) via the D / A converter (20) of the image processor (10)? Yes or No are displayed and screen 2-1 are modified sequentially? Yes, no ... modify screen 3? When yes or no is displayed, when setting the surveillance imaging through the CCD cameras 5, 6 and 7, respectively, the data of the rectangular portions to be monitored are operated by operating the shift key 34 of the key operation section 3 respectively. 23).

If the screen is modified, the shift key 34 of the key control unit 30 can be used to induce a full or partial modification, which is a mark or area for monitoring the corresponding cameras 5, 6 and 7. Set to. That is, in the area setting, the shift key 34 and the turn key 36 are adjusted by adjusting the upper, lower, left and right ranges of the corresponding area, and the mark is monitored using the shift key 34 and the additional key 37. Set up the site.

As described above, when the mold monitoring device main body 1 adjusts the data (target injection molding quantity, allowance rate, drop time and defect number) and the setting of the monitoring part of each camera 5, 6, 7 through the adjustment process. Has the adjustment been completed on the analog monitor (2)? Is it set in the state marked yes or no, and then start operation on analog monitor (2)? Is it an error displayed on the next screen? Yes, no or start driving? Yes and no are displayed.

Is it the above error? Yes, No will not appear when one or two cameras are installed, but only when three cameras are installed. The quantity and the defective rate will be calculated to stop the injection molding machine 4 or to operate the simple robot 8. do.

Therefore, the 286AT computer 12 of the main body 1 of the mold monitoring apparatus 1 has a three-way initial image input to the RAM 23 of the image processor 10 for the injection molding operation. Compared with the molded product, if it is matched with the initial image, and if it does not match, the injection molding machine 4 can be stopped or operated by the simple robot 8 through the input / output interface 11 to separately select the defective product. The image processor 10 has a resolution of 128 × 128, and the resolution displayed on the analog monitor 2 in the environment of the injection molding machine 4 is 64 horizontally and vertically 64 dots.

Do you want to start driving? If it is set on the screen of Yes or No, the operation of the injection molding machine 4 is started, and the analog processor is operated by the image processor 10 of the main body 1, the 286AT computer 12, and the three CCD cameras 5, 6, 7; 2) The injection molding and the corresponding images of the cores and cavity portions 9, 9 'of the mold are sequentially displayed, and at this time, the key operating portion 3 according to the operation state of the CCD cameras 5, 6, 7 ,. The camera LEDs (1-1,1-2, 2-1,2-2,3) and the determination LEDs (amount, fire), etc. attached to the progression portion 38 of the display will visually display the current state.

First, when the injection molding product is produced in good quality, the operation of the injection molding machine 4 is continuously performed without stopping, and the three CCDs monitoring the mold core and the cavity parts 9 and 9 'of the injection molding machine 4 are stopped. The part photographed by the cameras 5, 6 and 7 is displayed on the analog monitor 2 through the image processor 10 (the camera LED and the judgment LED of the progressing section 38 are lit and flashing). The operator can recognize the setting and progress data according to the operation unit 3 in the order of completion, goal, achievement, failure, defective rate in Korean.

If the injection molding is defective, is it an error on the analog monitor (2)? Yes or No, where the main body 1 can continuously operate the injection molding machine 4 by the set number of defects, but when the input number of defects is less than the main body 1, the simple robot 8 is defective. When the defective product is operated, (the lighting of the corresponding camera LED and the judging LED (light) are turned on), and the simple robot 8 is operated when the defective case coincides with the inputted defective number. The alarm is activated at the same time as the injection molding machine 4 is stopped.

When the target quantity entered during the initial condition setting just before operation of the main body 1 and the workload of the injection molding machine 4 coincide with the quality and defective process of the injection molding as described above, the Korean data after the completion of work is completed. Is displayed on the analog monitor 2 through the image processor 10 and the operation of the injection molding machine 4 is stopped. At this time, when the injection molding machine 4 continues to operate, pressing the shift key 34 of the key control unit 3 toward the no side on the screen resets to the initial condition setting time, and if selected, the actual injection molding machine 4 is selected. The mold work and the monitoring work of the mold monitoring device main body 1 are completed.

As described above, the mold monitoring device of the present invention has been described by installing three CCD cameras 5, 6, and 7 in the injection molding machine 4, but in some cases, one or two CCD cameras are installed in the main body 1. Can you install and operate it? Is there an error on the analog monitor (2)? Yes or no is not displayed and other operations are performed in the same manner.

[Effects of the Invention]

As described above, according to the present invention, unlike a mold monitoring apparatus using a CPU (4 bit or 8 bit) of a conventional one CCD camera, an analog monitor is equipped with one to three CCD cameras, a 286AT computer, an image processor, and the like. The appearance and injection molding of the injection molding produced in the injection molding machine are dropped by processing the wide range of applications and modifications quickly and easily on the various specifications required at the production site by displaying the Hangul data display and simple key control unit. The next mold surface is displayed in Korean data on the analog monitor through the three CCD cameras, so that the operator can easily monitor it accurately. The camera can be used to monitor three directions, including the bidirectional side of the mold and the opposite cavity side of the mold. In addition, it is possible to accurately recognize the missing parts, and the injection molding defect time is fully automated by the operation coordination between the robot and the injection molding machine, so that the mold can be solved by the production plan due to the reliability of the molding according to the injection molding machine, elimination of manpower and mold accident Surveillance devices can be provided.

Claims (10)

Three CCD cameras 5, 6, 7 photographing the mold core part 9 and the cavity part 9 'of the injection molding machine 4, and the cameras 5, 6, 7 and the injection molding machine 4 And a main body 1 which is operated simultaneously with the analog monitor 2 and the key control unit 3 on the front panel, the image processor 10, the input / output interface 11, the 286AT computer ( 12) and a key monitoring device, characterized in that the key / font interface (13) is installed. The method according to claim 1, wherein the 286AT computer 12 and the image processor 10 monitor the appearance state of the injection molding during molding with the CCD cameras 5 and 6, and again through the CCD cameras 5 and 6. A mold monitoring apparatus characterized in that a series of processes of monitoring the core and cavity portions (9, 9 ') of the mold and monitoring with another CCD camera (7) after the molding falls. The process according to claim 1, wherein an analog monitor (2) is connected to the image processor (10), and a moving part of the injection molding machine (4), the simple robot (8), and the key control unit (3) is connected to the input / output interface (11). Mold monitoring device, characterized in that 38 is connected. The camera LED (1-1) of claim 3, which monitors three directions including the core part 9 side and the cavity part 9 'side to the progressing part 38 to visually display the corresponding screen. , 1-2, 2-1, 2-2, 3) and the mold monitoring device, characterized in that the decision LED (both, fire) is installed. The image processor 10 converts an analog signal into a digital signal through a built-in A / D converter 20, and stores the same in the RAM 23. The parallel controller 22 and a port ( PT ₁ ) a mold monitoring apparatus, which is backed up in a floppy disk of a floppy disk driver 27 in a 286AT computer 12. 2. The mold monitoring apparatus according to claim 1, wherein a target amount, an allowable rate, a drop time, and defective predicted number data of the injection molded product are set by the corresponding key operation of the key operation unit (3). The image processing apparatus according to claim 1, wherein the image processor (10) determines and processes abnormality (badness) when the brightness value of the normalized image and the brightness value of the comparative image do not match, and the comparison of the brightness value is performed by the analog monitor (2). When setting the standard screen on the image can give an error arbitrarily, which is made by adjusting the tolerance shown on the analog monitor (2). 2. Is the font unit 15 of the key / font interface 13 corrected in screen 2-1 required during program operation? A mold monitoring device, characterized in that a character is displayed on an analog monitor (2) via a connector (CN ₄ ) by sending Hangul data about a yes or no to a picture processor (10) through a designated port. 2. The 286AT computer 12 commands the input / output interface 11 to stop the injection molding machine 4 through the connectors CN ₆ and CN ₅ or the simple robot via the connector CN ₇ . (8) operating the mold monitoring apparatus, characterized in that the selection of defective products. The method according to claim 1, wherein each time the injection molding machine 4 starts to operate, the corresponding Hangul data (completion, target, achievement, failure and defective rate data, etc.) is stored on the analog monitor 2 connected to the image processor 10. Mold monitoring device characterized in that the display.