KR100485304B1 - Supervisory method of plastic injection molding machine - Google Patents

Abstract

The present invention can improve the yield of the molded product by monitoring the defect (unmolded or overmolded) of the injection molded product and the state of the mold in the injection molding machine, the ejection of the product, the core, the ejector pin of the molded product in the injection molding machine By monitoring whether the position is in the normal position to reduce mold breakage prevention, it is possible to immediately inspect the unmolded or overmolded parts of the injection molded products, and to detect and display the mold status in real time in a video. And, when an error occurs, the worker can be notified by outputting the alarm sound.

Description

Monitoring method of injection molding machine {SUPERVISORY METHOD OF PLASTIC INJECTION MOLDING MACHINE}

The present invention relates to a method for monitoring an injection molding machine, and in particular, it is possible to improve the yield of the molded article by monitoring the defects (unmolded or overmolded) and the state of the mold in the injection molding machine in the injection molding machine, taking out the product from the injection molding machine The present invention relates to a method for monitoring an injection molding machine that can reduce the prevention of mold breakage by monitoring whether the core and the ejector pin are in the normal position.

As a mold monitoring apparatus in an injection molding machine which has been widely used in the related art, it is disclosed in Korean Patent Publication No. 1996-0009316 (published date; July 18, 1996).

The mold monitoring apparatus of the injection molding machine disclosed in Korean Patent Publication No. 1996-0009316 is equipped with one to three CCD cameras, a 286A computer, an image processor, and the like to display the Hangul data and display the processing status on an analog monitor. By operating the key control unit, a wide range of operations and modifications can be quickly and easily handled for various specifications required at the production site. It is configured to be easily monitored by workers by displaying Korean data on the analog monitor through multiple CCD cameras.

However, the mold monitoring apparatus of the conventional injection molding machine configured as described above cannot move the screen size and position of the inspection area because the moving picture is not supported, for example, the unmolded or overmolded molding state of the injection molded product. Not only can not be immediately inspected, the state of the mold can not be detected in real time, so the yield of the injection molded product can not be improved, and the operator can not be immediately alerted when an abnormality occurs, so that the operator can not respond quickly. There are a number of problems, such as the inability to save man power because the operator has to constantly monitor the analog monitor.

Accordingly, the present invention has been made in view of the various problems described above, and an object of the present invention is to improve the yield of molded products by monitoring defects (unmolded or overmolded) and the state of molds in injection molded products in an injection molding machine. The present invention provides a method for monitoring an injection molding machine.

Another object of the present invention is to monitor whether the ejection of the product, the core, the position of the ejector pin in the injection molding machine is in the normal position to prevent mold breakage, mold repair ratio, period, unmanned, injection can be made (automated) The present invention provides a method for monitoring a molding machine.

Still another object of the present invention is to provide a method for monitoring an injection molding machine that can not only immediately inspect unmolded or overmolded injection molded products, but also detect and display the state of mold in real time.

Still another object of the present invention is to provide a monitoring method of an injection molding machine that can notify an operator by outputting an alarm sound when an error occurs.

In order to achieve the above object, the present invention provides a main screen display step of displaying a main screen on a monitor while simultaneously opening a door of a mouse accommodation cabinet by applying power by switching on a start switch of an external button. In the step, the image menu button is clicked on the main screen displayed on the monitor to capture (photograph) the shape of the product to be injection molded by the first and second CCD cameras and the state of the manufacturing mold of the injection molded product, and output it to the microprocessor. At the same time, images of the state of the mold (opening of the mold (opening of the mold) and the closing of the mold (closed state of the mold) according to the manufacture of the injection molded product and the injection molded product are captured (photographed) to the microprocessor. When outputted, it is processed by an execution program stored in ROM, and an image (movie and still image) is displayed on the display window of the main screen. An image storage step for storing images (movies and still images) in a RAM, a setting window display step for displaying a setting window by clicking a cursor on a setting switch with a mouse after the image storing step, and displaying the setting window. The new product data input determination step for judging whether or not new product data is input in the setting window displayed in the step; and when the new product data input determination step determines that the new product data is input, the mouse is moved to the new product selection switch. When positioned and clicked, after the data deletion step of deleting all data related to the injection molded product stored in the RAM in advance under the control of the microprocessor and the data of the injection molded product set in the data deletion step are deleted, Image of injection molded product and mold A simple inspection discrimination step for discriminating whether or not it is a simple inspection for comparison inspection; an injection molded product / mold inspection discrimination step for discriminating whether or not it is an injection molded product and a mold inspection when the simple inspection discrimination step is determined as a simple inspection; When it is determined that the injection molding product and the mold inspection are determined in the injection molding product / mould inspection determination step, the size of the region to be inspected of the mold is moved by dragging the cursor on the tracker 100 or the + mark 102 with the mouse. The first inspection region setting step of adding, setting, or deleting an area to be inspected by moving or moving, and the non-inspecting area of the mold after adding or deleting or setting the inspection area in the first inspection area setting step. Place the cursor on the tracker or the + mark with your mouse and drag it to change or move it. In the first non-inspection area setting step of setting or deleting an additional inspection area, and in the first non-inspection area setting step, the cursor is positioned with the mouse to add, set, or delete a non-inspection area, and then click the first. A first injection molding product image manual setting discrimination step of judging by the microprocessor whether to manually set an image of an injection molded product after setting the non-inspection area, and a manual setting discrimination of the first injection molded product image If it is determined that the injection molded product image is set manually in the step, the injection molding product image storage discrimination step for determining whether to store the image of the injection molded product and the image storage injection image in the image storage determination step of the injection molded product If it is determined to store, the image of the injection molded product is transferred to the microprocessor. A product image storage step of storing an injection molded product image in the RAM by performing an operation process stored in the ROM, and storing the image of the injection molded product in the RAM in the product image storage step, A mold image storage determination step of determining whether to store the mold image by the microprocessor; and when it is determined that the mold image is stored in the mold image storage determination step, the image of the mold is calculated by the microprocessor according to an execution program stored in the ROM. A mold image storage step of processing and storing an image of a mold in the RAM; and a sample of testing a sample of the injection molded product by manufacturing a sample of an injection molded product after storing the mold image in the RAM in the mold image storage step. After executing the test step and the sample test step A mold state test step for testing the state of the mold, and a predetermined set of data, an image of the injection molded product, and an image of the mold are processed by the microprocessor according to an execution program stored in the ROM and stored in the RAM. In the product / molding data setting step, the injection molding product manufacturing step of manufacturing an injection molded product by positioning the cursor with the mouse at the execution of the operation selection button and clicking and continuously operating the injection molding machine, and the injection molding product manufacturing step The microprocessor determines whether the image of the injection molded product obtained by imaging (photographing) the image of the manufactured injection molded product by the first and second CCD cameras is within a predetermined value of a defective product preset in the RAM. Defective Step of Defective Product and Injection Molded Products Manufactured in Defective Decision Step The main screen setting button for determining a mold state by the microprocessor when the mold state is less than the set value stored in the RAM and an injection-molded product when the mold state is good in the mold state determination step. It is characterized by continuously manufacturing the target quantity (production quantity of the injection product) set by the counter setting switch.

Hereinafter, a monitoring apparatus for an injection molding machine according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view schematically showing a monitoring apparatus for an injection molding machine according to an embodiment of the present invention, Figure 2 is a circuit block diagram of a monitoring apparatus for an injection molding machine according to an embodiment of the present invention, Figure 3 1 is an enlarged view of a main screen (monitor) including a screen switch, FIG. 4 is an enlarged view of a setting window displayed when a setting button of a main screen is pressed in FIG. 3, and FIG. 5 is shown in FIG. 4. FIG. 6 is a diagram schematically illustrating a setting screen for adjusting the size of a region to be inspected in FIG. 6, and FIG. 6 is a diagram schematically illustrating a setting screen for moving a position of the region to be inspected in FIG. 4.

1 to 6, the monitoring apparatus for an injection molding machine according to an embodiment of the present invention is a microprocessor (1) for controlling the overall operation of the injection molding machine 40, and the execution of the microprocessor (1) A ROM (5; Read Only Memory) for storing a program, the shape of the product to be injection molded and the state of the manufacturing die of the injection molded product are captured (photographed) and output to the microprocessor 1, and the injection molding is performed. First and second CCD cameras for capturing (photographing) the state of the mold (opening of the mold) and closing of the mold (closed state of the mold) according to the manufacture of the product and the injection molded product, and outputting the same to the microprocessor 1. (7, 9), the image data and image menu button 31, the operation selection button 32, the main screen setting button 33 and I / O (input / output) under the control of the microprocessor 1 Main screen with status button 34, internal button 35 and display window 36 A monitor 11 for displaying 30, an image menu button 31, an operation selection button 32, a main screen setting button 33, and an I / O of the main screen 30 displayed on the monitor 11; A mouse 13 for inputting a command of an operator (also referred to as an operator) to the status button 34 and the internal button 35, and the new product data inputted by the new product selection switch 51 and the mouse 13 input. RAM 15 for receiving and storing new product data and various data through the microprocessor 1, an external button 20 installed on the front panel of the main body to externally input a command of an operator (also called an operator); The microprocessor 1 receives image data of the shape of the product to be injection-molded and the state of the manufacturing mold of the injection-molded product, which are captured (photographed) by the first and second CCD cameras 7 and 9. Calculated according to the executable program stored in ROM (5) Therefore, the buzzer 17 outputs an alarm sound to an operator when the defective rate of the injection-molded product exceeds a predetermined value or the condition of the mold is not good when it does not match with reference image data stored in the RAM 15. And, when the alarm sound is output from the buzzer 17, the warning light 18 to warn that the defect of the injection molded product exceeded a predetermined value or to warn that the shape of the mold of the injection molding machine 40 is not good (18). ) And an RS-232 communication port 19 for communicating with an adjacent injection molding machine 40 to control a plurality of injection molding machines 40.

The external button 20 has an emergency stop switch 21 for emergencyly indicating the operation of the injection molding machine 40 at the time of outputting the alarm sound of the buzzer 17 or the light of the beacon 18, and injection molding. The start switch 22 for reactivating the injection molding machine 40 after the cause of the defect of the product and the condition of the mold is improved, the removal of the cause of the defect of the injection molded product and the condition of the mold are improved. After the measures are taken, the alarm sound of the buzzer 17 and the alarm release switch 23 for releasing the light of the warning lamp 18 are constituted.

The main screen 30 displayed on the monitor 11 includes an image menu button 31 for storing a video, a still image, a stored image, and an image displayed on the screen, and automatic inspection is stopped and the image comes out from the vision. An operation selection button 32 for turning off all signals, setting data for inspection, executing an automatic inspection, a main screen setting button 33 for setting counter inspection contents, a delay time, and a sensitivity; I / O status consisting of alarm release menu to release mold completion, emergency stop, start switch and alarm to be released in case of mold, and mold stop, eject, alarm and cycle menu (single inspection menu) signals at output An image of the injection molded product captured by the button 34, an internal button 35 consisting of a start (or restart), an alarm cancel and an emergency stop menu, and the first and second CCD cameras 7, 9 and Display window 36 to display the image of the mold It consists of a.

The operation selection button 32 has a stop switch 32a for turning off all signals coming from the vision and stopping the automatic inspection, a setting switch 32b for setting data for inspection, and executing an automatic inspection. It is comprised by the execution switch 32c.

The I / O state button 34 includes a mold opening completion switch 34a at an input, an emergency stop switch 34b for stopping the injection molding machine 40 in an emergency, a start switch 34c for inputting a start command, and an alarm. Alarm release switch 34d for releasing the signal, mold closing stop switch 34e, eject switch 34f, robot switch 34g, and cycle switch 34h (also referred to as one-time inspection end switch) at the time of outputting. It is.

The main screen setting button 33 includes a counter setting switch 33a for resetting the target quantity (production quantity of the injection product), the quantity of good product, the quantity of defectiveness, the quantity of defectiveness and the counter, the simple inspection, the composite inspection, the product and mold inspection. And an inspection content setting switch 33b for displaying an inspection area inspection method and inspection type for executing a mold inspection, an inspection delay time setting switch 33c for setting a delay time before receiving and inspecting an image by receiving a signal; It consists of a sensitivity setting switch 33d for setting the simple inspection sensitivity, the number of re-inspection, the re-inspection range, the black / white sensitivity adjustment, and the composite inspection sensitivity.

The injection delay time refers to the time until the mold opening completion signal is received and the image of the product is acquired in the case of injection molded products, and in the case of the mold, the time until the image is acquired to inspect the mold.

The setting window 50 displayed when the setting switch 32b of the operation selection button 32 is clicked is a new product selection switch 51 which is clicked when a new product is selected and an inspection method (simple inspection or complex inspection) is set. The inspection method setting switch 52, the inspection type setting switch 53 for setting the inspection type (product, mold or mold), the inspection area setting switch 54 for setting the size of the inspection area, and the inspection area A non-inspection area setting switch 55 for moving an unnecessary inspection area position, an image manual setting switch 56 for selecting a product image and a mold image storage, and an image of a product and an image of a mold are automatically stored. The automatic setting switch 57 and the plastic molded products are captured by the first and second CCD cameras 7, 9 and displayed on the display window 36 of the main screen, and compared with the reference images of the products stored in the RAM 15. Judging good or bad The product test switch 58 and the mold are imaged by the first and second CCD cameras 7, 9 and displayed on the display window 36 of the main screen, and compared with the reference image of the mold stored in the RAM 15, The mold test switch 59 for determining defective products and the closing switch 60 for storing all data and images set while closing the setting window 50 are stored in the RAM 15.

The internal button 35 is composed of a start switch 35a, an alarm release switch 35b, and an emergency stop switch 35c for inputting an emergency stop.

In the drawing, reference numeral 60 denotes a mouse accommodation cabinet for housing the mouse 13.

After the input of the new product data into the monitoring method of the injection molding machine according to an embodiment of the present invention will be briefly described for the manufacture of the injection molded product.

First, when the start button 22 of the external button 20 is switched on, power is applied to the microprocessor 1 so that the door 60a of the mouse accommodating cabinet 60 is opened to externally move the mouse 13. The main screen 30 shown in FIG. 3 is displayed on the monitor 11 under the control of the microprocessor 1 while the mouse 13 is exposed to be operated at.

When the mouse 13 is operated and the cursor is positioned on the image menu button 31 of the main screen 30 and clicked, a video switch for displaying a video on the display window 36 of the main screen 30, and stops. A still picture switch for displaying an image, an image opening switch for opening an image, and an image storage switch for storing an image in the RAM 15 through the microprocessor 1 are displayed.

At this time, when the cursor is positioned on the video switch by the mouse 13 and clicked, it is captured (photographed) by the first and second CCD cameras 7, 9 and stored in the RAM 15 in advance. A moving picture is displayed on the main screen 30, and when the cursor is positioned on the still picture switch by the mouse 13 and clicked, the first and second CCDs are controlled by the microprocessor 1. Cameras 7 and 9 operate to capture an image of an injection molded product or a mold and store it in the RAM 15 under the control of the microprocessor 1, and move the cursor with the mouse 13. When placed on the image opening switch and clicked, a moving image or a still image stored in the RAM 15 is displayed on the display window 36 of the main screen 30, and the cursor is moved by the mouse 13. Located on image storage switch When clicked on, it is stored in the RAM 15 under the control of the microprocessor 1.

Next, the cursor is placed on the counter setting switch 33a of the main screen setting button 33 by the mouse 13, and the target quantity, the quantity of good quantity and the quantity of defective quantity, which are the quantity of production of the injection-molded product, are set respectively. When the inspection contents setting switch 33b of the main screen setting button 33 is clicked on either the simple inspection or the composite inspection, the contents to be inspected are set, and whether the injection molded product and the mold are to be inspected at the same time. It is set by clicking with the mouse 13 whether or not to inspect only.

Then, after placing the cursor on the inspection delay time setting switch 33c of the main screen setting button 33, the inspection delay time is set, and the sensitivity of the main screen setting button 33 is set by the mouse 13. After placing the cursor on the switch 33d, the sensitivity value, the number of retests, the black / white sensitivity, and the composite test sensitivity are set respectively.

When the stop switch 32a of the operation selection button 32 is clicked, the operation of the injection molding machine 40 in operation is stopped, and when the setting switch 32b of the operation selection button 32 is clicked, FIG. The setting window 50 shown in FIG.

In the case of inputting new product data in the setting window 50, the new product selecting switch 51 of the setting window 50 is clicked, and the checking method of the test method setting switch 52 in the setting window 50, eg For example, whether it is a simple inspection or a composite inspection, the setting window 50 determines whether to inspect the injection molded product and the mold of the inspection type setting switch 53 or only the mold by the mouse 13. Click to set.

Then, in the setting window 50, if you want to set the area to be tested for the injection molded product or mold, click the inspection area setting switch 54 in the setting window 50 to inspect the injection molded product or the mold shown in FIG. In order to change the size of the area to be changed, the mouse 13 moves the cursor to the tracker 100 (small square located at each corner of the large rectangle) or + mark 102 of FIG. 5 to change or move the cursor. By adding, setting or deleting an area to be inspected, and setting a non-inspection area of the injection molded product or mold in the setting window 50, the non-inspection area setting switch 55 in the setting window 50. Click to set the non-inspection area of the mold shown in FIG. 6 by positioning the cursor on the tracker 100 or the + mark 102 of FIG. Is not to be scanned is moved is set by adding a setting or deleting the non-test areas.

When manually setting the image of the injection molded product or the mold, click the image manual setting switch 56 in the setting window 50 to manually set the image of the injection molded product or the mold, and automatically set the image of the injection molded product or the mold. In the setting window 50, click the image automatic setting switch 57 in the setting window 50 to automatically set the image of the injection molded product or mold, and the setting window 50 when testing the injection molded product in the setting window 50 ) To place the cursor on the injection molded product test switch 58 by the mouse 13 and click to set the injection molded product to be tested in the setting window 50, and to test the mold in the setting window 50. In this case, the cursor is positioned on the mold test switch 59 in the setting window 50 by the mouse 13 and clicked to move the mold in the setting window 50. It is set to the host,

As described above, the data set by each switch of the image menu button 31, each switch of the operation selection button 32, and each switch of the main screen setting button 33 is transmitted to the microprocessor 1; It is input and operated in accordance with the execution program stored in the ROM (5) and stored in the RAM (15). Thus, after each data is stored in the RAM (15), the start switch 22 of the external button (20) When switching on or clicking the start switch 35a of the inner button 35 with the mouse 13, the injection molding machine 40 operates to manufacture an injection molded product.

The state of the injection molded product manufactured by the injection molding machine 40 or the mold for molding the injection molded product is captured by the imaging control signal output from the microprocessor 1 and output to the microprocessor 1. The microprocessor 1 receives these imaging signals and performs arithmetic processing in accordance with an execution program stored in the ROM 5 to compare with the reference data stored in advance in the RAM 15, and the quantity of defective products, defective quantities and When the defective yield is calculated by calculating and calculating the defective yield, the microprocessor 1 outputs an alarm control signal to the buzzer 17 and outputs an alarm sound at the same time. The warning lamp 18 is turned on to release the alarm after the operator clicks the emergency stop switch 21 of the external button 20 or the emergency stop switch 35c of the internal button 35. By clicking the position (35b) to the mouse (13) stops the operation of the injection molding machine (40).

When the injection molding machine 40 is emergency stopped, the mold opening is opened by clicking the mold opening completion switch 34a of the I / O state button 34 or the mold closing switch 34e is opened by the mouse 13. Click to prevent the mold from being blocked, remove the cause of the defect, and click the alarm release switch 34d to release the alarm signal (output the alarm sound from the buzzer 17 or turn off the warning light 18) and then eject the mold. If the quality of the injection molded product and the state of the mold are good while manually manufacturing the molded product, the start switch 34e of the external button 20 is switched on or the start switch 35a of the internal button 35 is pressed. Click (13) to stop the operation of the injection molding machine 40.

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When the close switch 60 is clicked on the setting window 50, the new product selection switch 51, the inspection method setting switch 52, the inspection type setting switch 53, the inspection area setting switch 54, and no inspection All data set by the area setting switch 55, the image manual setting switch 56, the image automatic setting switch 57, the injection molded product test switch 58, and the mold test switch 59 are respectively The microprocessor 1 is input to the microprocessor 1 and is processed by the microprocessor 1 according to an execution program stored in the ROM 5 and stored in the RAM 15.

On the other hand, in order to control the plurality of injection molding machines 40, when connected to a plurality of injection molding machines through the RS-232 communication port 19, it is possible to monitor and control a plurality of monitoring methods of the injection molding machine of the present invention. Of course.

Next, the monitoring method and effect of the injection molding machine according to the embodiment of the present invention configured as described above will be described in detail with reference to FIG. 7 (FIGS. 7A, 7B, and 7C).

 7 (FIG. 7A, FIG. 7B, and FIG. 7C) are flowcharts illustrating a method for monitoring an injection molding machine according to an embodiment of the present invention. In FIG. 7, S denotes a step.

First, in step S1, the start switch 22 of the external button 20 is switched on to apply power to open the door 60a of the mouse accommodating cabinet 60, and at the same time, the main screen 30 is displayed on the monitor 11. ), Go to step S2, and click on the image menu button 31 on the main screen 30 displayed on the monitor 11 in the main screen display step to display the first and second CCD. The shape of the product to be injection molded and the state of the manufacturing mold of the injection molded product by the cameras 7 and 9 are captured (photographed) and output to the microprocessor 1, and the injection molded product and the injection molded product When a moving picture and a still image of the state of the mold (mold opening (mold open) and mold closing (mold closed state) of the mold are captured (photographed) and output to the microprocessor 1, an executable program stored in the ROM 5 By the calculation process, the display window 36 of the main screen 30 Expressing the image (moving and still images) and also stores an image (moving and still images) to the RAM (15).

Next, the process advances to step S3 by placing the cursor on the setting switch 32b with the mouse 13 and clicking to display the setting window 50 (setting window display step), and proceed to step S4 to display the setting window displayed in the setting window display step. In step 50, it is determined whether or not the input of the new product data is input (new product data input determination step), and when it is determined that the new product data input is determined in the new product data input determination step (YES), the process advances to step S5. When the mouse 13 is positioned on the new product selection switch 51 and clicked, all data regarding the injection molded product stored in the RAM 15 is deleted under the control of the microprocessor 1 (data deletion). step).

After deleting the data of the injection molded product set in advance in the data deletion step, the process proceeds to step S6 to determine whether or not it is a simple test for comparing and inspecting the images of the injection molded product and the mold at a predetermined position (simple inspection determination step). If it is determined in the simple inspection determination step that it is a simple inspection (YES), go to step S7 to determine whether the injection molded product and the mold inspection (injection molding product / mold inspection determination step), and the injection molding product / mold inspection discrimination When it is determined that the injection molded product and the mold inspection are determined in step (YES), the process proceeds to step S8, where the cursor 13 moves the cursor to the size of the area to be inspected of the mold shown in FIG. ; Small squares located at each corner of a large rectangle) or + mark (102), and drag to change or move to add or set the area to be inspected. Or delete and set (first inspection region setting step), add or delete or set the inspection region in the first inspection region setting step, and then proceed to step S9 to select the non-inspection region of the mold shown in FIG. By (13), the cursor is positioned on the tracker 100 or the + mark 102 of FIG. 6, dragged, changed, or moved to set or delete a non-inspection area not to be inspected (first non-inspection). Area setting step).

In the first non-inspection area setting step, the mouse 13 moves the cursor to the addition, setting, or deletion of the non-inspection area, and clicks to set the setting of the first non-inspection area, and then proceeds to step S10. Is determined by the microprocessor 1 (step 1 for determining the first injection molded product image manually), and the injection molded product image is manually set in the step for manually setting the determination of the first injection molded product image. If it is determined (YES), go to step S11 to determine whether to store the image of the injection molded product (injection molding product image storage discrimination step), and in the injection molding product image storage determination step, If it is determined that the image is to be stored (YES), the process proceeds to Step S12 where the image of the injection molded product is processed into the microprocessor. And stores the operation processing according to the execution program stored in the ROM (5) in (1) an image of the injection molded product in the RAM (15) (Image storage step)

After storing the injection molded product image in the RAM 15 in the product image storage step, the microprocessor 1 determines whether to store the image of the mold by going to step S13 (mold image storage determination step). If it is determined in the mold image storage determination step that the mold image is to be stored (YES), the process proceeds to step S14 where the image of the mold is processed by the microprocessor 1 according to the execution program stored in the ROM 5. An image of a mold is stored in the RAM 15 (mold image storage step)

After storing the mold image in the RAM 15 in the mold image storage step, the process proceeds to step S15 to prepare a sample of the injection molded product and to test the sample of the injection molded product (sample test step). After the state is tested (mold state test step), the process proceeds to step S17 to calculate all the data, the image of the injection molded product, and the image of the mold, which are set previously, according to the execution program stored in the ROM 5 in the microprocessor 1. Processing to store in the RAM 15 (injection molding product / mold image calculation step).

Next, the flow advances to step S18 by positioning the cursor by the mouse 13 at the execution 32c of the operation selection button 32 and clicking to continuously operate the injection molding machine 40 to produce an injection molded product ( In the injection molding product manufacturing step), step S19, the image of the injection molding product manufactured in the injection molding product manufacturing step (the image of the injection molding product captured by the first and second CCD cameras) is the RAM ( The microprocessor 1 determines whether the defective product is within the preset value set in 15) (defective product determination step), and the defective product of the injection molded product manufactured in the defective product determination step is stored in the RAM 15. If it is equal to or less than the set value (YES), the flow advances to step S20 to determine whether the mold state is good by the microprocessor 1 (mold state determination step). In the mold state determination step, when the mold state is good (YES), the process proceeds to step S21 where the target quantity (produced product of the injection molded product is set by the counter setting switch 33a of the main screen setting button 33). Quantity).

On the other hand, as a result of discrimination in the new product data input determination step of step S4, when it is not data input of the new product (NO), the process proceeds to the injection molded product manufacturing step of step S18 to perform the operation below the injection molded product manufacturing step. If it is determined that the result of the simple inspection determination step of step S6 is not a simple inspection (NO), the process proceeds to step S6a, where a compound inspection is followed to inspect the similar object, and the injection molded product / Proceed to the mold inspection determination step, the operation below the injection molding product / mold inspection determination step is performed.

When the injection molding product / mold inspection determination step of step S7 determines that the injection molding product is not the mold inspection (NO; when the mold inspection step is determined), the process goes to step S30, and the inspection type is a mold. And move the cursor to step S31 to determine the size of the region to be inspected in the mold shown in FIG. 5 by moving the cursor with the mouse 13 in the tracker 100 of FIG. 5 (small square located at each corner of the large rectangle) or +. Set the area to be inspected by positioning it on the display 102 and dragging it to change or move (second inspection area setting step), and proceed to step S32 to place the non-inspection area of the mold shown in FIG. 6 on the mouse 13. By placing the cursor on the tracker 100 or the + mark 102 of FIG. 6 and dragging to change or move the non-inspection area not to be inspected, additionally set or delete the non-inspection area (second ratio). Yarn area setting step) and after setting the second non-inspection area, the process proceeds to step S33 to determine by the microprocessor 1 whether to manually set the mold image (second mold image manual setting determination). Step), the process advances to the mold image storage determination step of step S13, and the operation below the mold image storage determination step is performed.

As a result of the determination of the first injection molded product image manual setting determination step of step S10, when it is determined that the image of the injection molded product is not a manual setting (NO), the flow advances to step S34 to automatically set the image of the injection molded product. (Automated injection molding product image setting step), the flow advances to step S35 to automatically set the injection molded product image and the mold image, and the flow proceeds to the injection molded product sample test step below by performing the injection molding product sample test step. .

If it is determined that the second mold image manual setting determination step in step S33 is not the second mold image manual setting (NO), the process advances to step S33a to automatically set the mold image, and the injection molding in step S15 is performed. Product sample test step) and the injection molding product sample test step is performed. If the mold image storage determination step of step S13 determines that the mold image is not stored (NO), the process proceeds to step 13a and cancels. The flow returns to the injection molded product image storage determination step in step S11, and the operation below the injection molded product image storage determination step is performed.

As a result of the determination of the defective article discrimination step of step S19, when the defective article of the injection molding product manufactured by the injection molding machine 40 is not equal to or less than the set value stored in the RAM 15 (NO), the process proceeds to step S40 and the microprocessor. The emergency stop switch 34b of the I / O state button 34 is operated by the control signal outputted from (1), or the mouse 13 is moved to the mold stop switch 34e and the ejector 34f. Position the robot switch 34g and the cycle switch 34h, click to stop the injection molding machine 40 and the ejector, and proceed to step S41 to display the buzzer 17 by the alarm control signal output from the microprocessor 1. At the same time, the alarm lamp 18 is turned on, and the warning lamp 18 is turned on to warn that an injection molded product is produced in which the defective rate is higher than the quantity of the defective product which is set in advance in the RAM 15, and the process proceeds to step S42. cause And proceeds to step S43 to activate the alarm release switch 23 of the external button 20 or to position the cursor by the mouse 13 on the alarm release switch 35b of the internal button 35. Afterwards, the alarm is clicked to cancel, and the flow advances to step S44 to activate the start switch 22 of the external button 20 or the cursor 13 to the start switch 35a of the internal button 35. After positioning, click to operate the injection molding machine 40 and the ejector (not shown; installed in the injection molding machine 40), and then proceed to the mold state determination step of step S20 to determine the mold state determination step. The following operation is performed.

In the above description, the defective article of the injection molded product manufactured in the injection molding machine 40, which is set to execute the I / O state by the operation of the I / O state button 34 on the main screen shown in FIG. When not less than the set value stored in the RAM 15 (NO), the mold opening completion signal, the emergency stop signal, the start signal and the alarm release signal are output from the injection molding machine 40 to the main screen 30, The mold stop hold signal by the mold stop switch 34e of the I / O state button 34, the ejector hold signal by the ejector switch 34f of the I / O state button 34, and the I / O state button ( Hold signal of the injection molding machine by the injection molding machine robot switch 34g of 34), alarm release signal by the alarm release switch 34d of the I / O state button 34, and cycle switch of the I / O state button 34 By 34h, the cycle signal (once inspection end signal) is operated from the main screen 30 to the injection molding machine 40, respectively.

As a result of the determination of the mold state determination step of step S20, if the mold state is not good (NO), the flow advances to step S50 to activate the mold closing stop switch 34e of the I / O state button 34 to prevent mold closing. In step S51, the alarm sound is output from the buzzer 17 by the alarm control signal output from the microprocessor 1, and the warning lamp 18 is turned on to prevent mold closing of the injection molding machine 40. And the process proceeds to step S52 to remove the cause of the mold trouble, and then proceeds to step S53 to activate the alarm release switch 23 of the external button 20 or to release the alarm release switch 35b of the internal button 35. After the cursor has been positioned by the mouse 13, click to cancel the alarm, and the flow advances to step S54 to operate the start switch 22 of the external button 20 or to start the start button of the internal button 35. FIG. After placing the cursor on the teeth 35a by the mouse 13, click to operate the injection molding machine 40, go to step S55 to inspect the mold, and go to the injection molding product manufacturing step of step S21 to the main screen. The target quantity (production quantity of the injection product) set by the counter setting switch 33a of the setting button 33 is continuously manufactured.

Therefore, the present invention can improve the yield of the molded article by monitoring the defects (unmolded or overmolded) and the state of the mold in the injection molding machine, the ejection of the product molded in the injection molding machine, core, ejector By monitoring whether the pin position is in the normal position, it is possible to prevent mold breakage and reduce the defective rate of injection molded products, and to immediately inspect the unmolded or overmolded parts of the injection molded products, and to check the state of the mold in real time. It can be detected and displayed as a video, and when an abnormality occurs, an alarm sound can be output to the worker to inform the worker.

In the above description, the specific embodiments have been shown and described, but the present invention is not limited thereto, for example, by those skilled in the art without departing from the concept of the present invention. Of course, the design can be changed in various ways.

As described above, according to the monitoring method of the injection molding machine of the present invention, it is possible to improve the yield of the molded article by monitoring the defects (unmolded or overmolded) and the condition of the mold in the injection molding machine, the molding in the injection molding machine By monitoring whether the ejected product, core, and ejector pins are in the normal position, it is possible to reduce the defect rate of injection molded products by preventing mold damage, reducing repair costs, unmanned realization, and realizing the whole process. The unmolded or overmolded molded products can be inspected immediately, the condition of the mold can be detected in real time and displayed as a video, and when an error occurs, an alarm sound can be output to the operator to inform the operator.

1 is a perspective view schematically showing a monitoring apparatus of an injection molding machine according to an embodiment of the present invention;

2 is a circuit block diagram of a monitoring apparatus for an injection molding machine according to an embodiment of the present invention;

3 is an enlarged view of a main screen (monitor) including a screen switch in FIG. 1;

4 is an enlarged view of a setting window displayed when a setting button of a main screen is pressed in FIG. 3;

FIG. 5 is a view schematically illustrating a setting screen for adjusting a size of an area to be inspected in FIG. 4;

FIG. 6 is a view schematically illustrating a setting screen for moving a position of an area to be inspected in FIG. 4;

7A, 7B, and 7C are flowcharts for explaining a monitoring method in the monitoring method for an injection molding machine according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

1: Microprocessor 5: ROM

7: First CCD Camera 9: Second CCD Camera

11: Monitor 13: Mouse

15: RAM 17: Buzzer

18: Warning light 19: RS-232 communication port

20: External button 21: Emergency stop switch

22: start switch 23: alarm release switch

30: Main screen 31: Image menu button

32: Operation selection button 32a: Stop switch

32b: setting switch 32c: execution switch

33: Main screen setting button 33a: Counter setting switch

33b: Inspection content setting switch 33c: Inspection delay time setting switch

33d: Sensitivity setting switch 34: I / O (input / output) status button

34a: open switch 34b: emergency stop switch

34c: start switch 34d: alarm release switch

34e: type stop switch 34f: eject switch

34g: Robot switch 34h: Cycle switch

35: Internal button 35a: Start switch

35b: alarm release switch 35c: emergency stop switch

36: display window 40: injection molding machine

50: Setup window 51: New product selection switch

52: Inspection method setting switch 53: Inspection type setting switch

54: area setting switch 55: non-inspection area setting switch

56: Image manual setting switch 57: Automatic setting switch

58: Product Test Switch 59: Mold Test Switch

60: Close switch 60: Mouse housing cabinet

Claims (6)

The main screen display step of switching on and off the start switch 22 of the external button 20 to open the door 13a of the mouse accommodation cabinet and to display the main screen 30 on the monitor 11. and, In the main screen display step, by clicking the image menu button 31 on the main screen 30 displayed on the monitor 11, the shape of the product to be injection molded by the first and second CCD cameras 7, 9 and Manufacturing the injection molded product The state of the mold is photographed (photographed) and output to the microprocessor 1, and the state of the mold (opening (opening of the mold) and mold closing according to manufacture of the injection molded product and the injection molded product). When the moving picture and the still picture of the mold (closed state) are captured (photographed) and output to the microprocessor 1, arithmetic processing is performed by an execution program stored in the ROM 5 to display the display window of the main screen 30 ( An image storage step of displaying images (movies and still images) in 36) and storing images (movies and still images) in RAM 15; A setting window display step of placing the cursor on the setting switch 32b with the mouse 13 after the image storing step and clicking to display the setting window 50; A new product data input determination step of determining whether or not input of new product data is input in the setting window 50 displayed in the setting window display step; When it is determined in the new product data input determination step that the data is input of the new product, when the mouse 13 is placed on the new product selection switch 51 and clicked, the RAM (under the control of the microprocessor 1) is controlled. A data deletion step of deleting all data relating to the injection-molded product stored in advance in 15); A simple inspection determination step of discriminating whether or not it is a simple inspection for comparing and inspecting an image of an injection molded product and a mold at a predetermined position after deleting the data of a predetermined injection molded product in the data deleting step; An injection molded product / mold inspection determination step of discriminating whether or not an injection molded product and a mold inspection are to be determined when the simple inspection determination step is a simple inspection; When it is determined that the injection molded product and the mold inspection are determined in the injection molding product / mould inspection determination step, the cursor 13 moves the cursor to the size of the area to be inspected by the mouse 13. A first inspection area setting step of adding, setting, or deleting an area to be inspected by being positioned at a square or a + mark 102 and dragging to change or move it; After adding or deleting or setting an inspection region in the first inspection region setting step, the cursor is moved to the tracker 100 or the + mark 102 by the mouse 13 to change the non-inspection region of the mold by changing the drag. A first non-inspection area setting step of setting or deleting a non-inspection area not to be inspected by moving or moving; In the first non-inspection area setting step, the mouse 13 moves the cursor to the addition, setting or deletion of the non-inspection area and clicks to set the first non-inspection area, and then manually sets the image of the injection molded product. A first injection molding product image determination step for determining by the microprocessor (1) whether or not to set it as An injection molding product image storage determining step of determining whether to store an image of the injection molded product when it is determined that the injection molding product image is manually set in the first injection molding product image setting determination step; When it is determined in the image storage determination step of the injection molded product that the image of the injection molded product is determined, the image of the injection molded product is processed in accordance with the execution program stored in the ROM 5 in the microprocessor 1 to perform injection molding. A product image storing step of storing an image of a product in the RAM 15; A mold image storage determination step of determining by the microprocessor 1 whether to store an image of a mold after storing an image of an injection molded product in the RAM 15 in the product image storage step; When it is determined that the mold image is to be stored in the mold image storage determination step, the image of the mold is processed by the microprocessor 1 according to an execution program stored in the ROM 5, and the mold image is stored in the RAM 15. A mold image storing step for storing; A sample test step of storing an image of the mold in the RAM 15 in the mold image storing step, preparing a sample of the injection molded product, and testing a sample of the injection molded product; The mold test step for testing the state of the mold after testing the sample of the injection molded product by the sample test step, The injection molded product / mold image which stores the set data, the image of the injection molded product, and the image of the mold in the microprocessor 1 according to the execution program stored in the ROM 5 and stores it in the RAM 15. Operation step, After calculating the injection molded product / mold image in the injection molded product / mold image calculation step, the cursor is positioned by the mouse 13 at the execution 32c of the operation selection button 32 and clicked to insert the injection molding machine 40. An injection molded product manufacturing step of manufacturing an injection molded product by operating continuously; The image of the injection molded product obtained by imaging (photographing) the image of the injection molded product manufactured by the injection molded product manufacturing step by the first and second CCD cameras is within a predetermined value of a defective product which is preset in the RAM 15. Defective product discrimination step for determining whether or not by the microprocessor (1), A mold state determination step of discriminating by the microprocessor 1 whether the mold state is good when the defective product of the injection-molded product manufactured in the defective product determination step is equal to or less than the set value stored in the RAM 15; When the mold state is good in the mold state determination step, the injection molded product is continuously manufactured with the target quantity (production quantity of the injected product) set by the counter setting switch 33a of the main screen setting button 33. Monitoring method of injection molding machine, The method according to claim 1, wherein as a result of the determination in the new product data input determination step, when it is not data input of the new product, the process proceeds to the injection molded product manufacturing step and continues the operation below the injection molded product manufacturing step, and the simple inspection is determined. If it is determined that the step is not a simple inspection, a compound inspection for tracking and inspecting an analogous object is carried out, and the injection molding product / mould inspection determination step is performed to perform the operation below the injection molding product / mould inspection determination step. Monitoring method of injection molding machine. The method according to claim 1, wherein when it is determined that the injection molding product / mold inspection discrimination step is not an injection molded product and a mold inspection, the inspection type inspects the mold and determines the size of the region to be inspected. Position the cursor on the tracker 100 or the + mark 102 to change or move the cursor to set the area to be inspected, and move the cursor to the tracker 100 by using the mouse 13 in the non-inspection area of the mold. Or the + mark 102 to set or delete the non-inspection area which is not to be inspected by dragging it to change or move it, and to set the image of the mold manually to the microprocessor 1. And a step of determining the mold image storage determination step and performing the operation below the mold image storage determination step. . The method of claim 1, wherein if it is determined that the image of the injection molded product is not a manual setting, the image of the injection molded product is automatically set, and the image of the injection molded product is automatically determined. And automatically setting the mold image, and proceeding to the injection molded product sample test step and performing the following operations under the injection molded product sample test step. The microprocessor (1) according to claim 1, wherein when the defective part of the defective article discrimination step is determined, the defective part of the injection molded product manufactured by the injection molding machine (40) is not lower than or equal to a preset value stored in the RAM (15). The emergency stop switch 34b of the I / O state button 34 is operated by the control signal, or the mouse 13 is moved to the mold stop switch 34e, the ejector 34f, and the robot switch 34g. And by clicking on the cycle switch 34h to stop the injection molding machine 40 and the ejector, and output the alarm sound from the buzzer 17 by the alarm control signal output from the microprocessor 1, The warning lamp 18 is turned on to warn that an injection molded product is being produced more than the quantity of defective products which is set in the RAM 15 in advance, and after the cause of failure is removed, the alarm release switch of the external button 20 is removed. Activate (23) Alternatively, after positioning the cursor by the mouse 13 on the alarm release switch 35b of the inner button 35, click to cancel the alarm, and activate the start switch 22 of the outer button 20; or After positioning the cursor by the mouse 13 on the start switch 35a of the inner button 35, click to operate the injection molding machine 40 and the ejector, and then proceed to the mold state determination step to proceed to the mold state. A monitoring method for an injection molding machine, characterized in that the following steps are performed. 2. The method of claim 1, wherein when the mold state determination step determines that the mold state is not good, the mold closing stop 34e of the I / O state button 34 is operated to prevent mold closing, and the microprocessor ( The alarm sound is output from the buzzer 17 by the alarm control signal output from 1), and the warning lamp 18 is turned on to alert that the mold closing of the injection molding machine 40 is prevented and the cause of the mold is removed. Later, the alarm release switch 23 of the external button 20 is operated or the cursor is positioned by the mouse 13 on the alarm release switch 35b of the internal button 35, and then clicked to cancel the alarm. Then, the start switch 22 of the external button 20 is operated or the cursor is placed on the start switch 35a of the inner button 35 by the mouse 13, and then clicks the injection molding machine ( 40) and mold Inspecting and proceeding to the injection molding product manufacturing step, and continuously producing the target quantity (production quantity of the injection product) set by the counter setting switch 33a of the main screen setting button 33; .