JP5820701B2 - Control device and control method of molding machine - Google Patents

Description

  The present invention relates to a control device and a control method applied to a molding machine such as an injection molding machine or a die cast molding machine.

  Molding machines that use molds, such as injection molding machines and die cast molding machines, perform a series of cycles such as mold closing, injection, pressure holding, and mold opening based on a program built in the control device. By repeating in order, the molded product is configured to be manufactured efficiently. In such a molding machine, molding conditions are set according to the type, material, mold, and the like of the molded product.

  The molding machine is equipped with a human machine interface unit having an operation display unit with a touch panel, and it is possible to search molding conditions and perform input operations using the touch panel. For example, using the touch panel, various data relating to weighing, injection, mold opening / closing, taking out of a molded product, and the like are input to the control unit, and these data are displayed on the touch panel.

On the other hand, in order to determine the quality of a molded product, the molding machine detects a specific time, pressure, position, etc., and provides a quality monitor that determines whether the molded product is within the allowable range of the good product. When it is out of the allowable range, an alarm message is also displayed on the display unit in order to notify a worker or the like and to take countermeasures. (For example, Patent Documents 1 and 2)
The molding conditions of the molding machine change from moment to moment due to environmental changes and temperature changes in the factory, wear of the moving parts of the mechanism or changes in the friction coefficient, the state of the material of the molded product, and the like. For this reason, even if the molding conditions immediately after the input are good products, the molding conditions change over time, and as a result, defective products may be generated. Therefore, fine adjustment of the molding conditions is necessary.

  As described in Patent Document 3, when an abnormality occurs in the molding machine, the molding condition and the actual value are displayed on the actual value display screen, and the screen is switched in response to the abnormality, and the actual value display is displayed. There has also been proposed a molding machine management method in which a screen is formed.

JP 2007-216449 A JP 2007-021827 A JP 2008-126527 A

  In recent molding machines such as injection molding machines, there is a great variety of molding techniques, and since molding is performed using a wide variety of options, there are very many molding condition setting items. Moreover, since the display unit for setting is also performed using a plurality of screens, it is not easy to reset the molding conditions. For example, when a filling time monitoring error occurs, a screen for setting the filling speed and speed switching position and filling pressure, a screen for setting temperature conditions, a screen for setting weighing conditions, filling control, etc. It is necessary to input various setting values while watching each screen while switching at least four types of screens such as the option screen.

  For this reason, it is not easy to reset the molding conditions so as to eliminate the cause of the alarm at the site where the alarm message is issued, and there is a possibility that the setting is wrong or the setting is omitted. If the setting is wrong, it will cause unnecessary molding, and the time required for the process will be wasted. An unfamiliar worker may mistake the setting of molding conditions.

  Accordingly, an object of the present invention is to provide a molding machine control apparatus and control method capable of adjusting molding conditions in accordance with the contents of an alarm when an alarm is displayed.

  The present invention is a control device for a molding machine, and includes an operation display unit having a touch panel, means for displaying an alarm screen including an alarm comment on the touch panel, and a plurality of classification items related to each alarm comment for each alarm comment. Means for storing a diagnostic code group list having; means for storing a molding condition group list having a plurality of classification items for each molding condition for each signal name of various molding conditions; and the alarm screen displayed on the touch panel Means for calling up the diagnostic code group list corresponding to the alarm comment on the alarm screen when a setting button is operated, a specific classification item among the classification items in the called diagnostic code group list, and the molding condition Match each classification item in the group list, Means for adding molding condition information having a molding condition group list including the classification item to the set value list screen when the persons match each other, and means for displaying the set value list screen on the touch panel. .

  In one embodiment of the present invention, when one of the plurality of molding conditions displayed on the set value list screen is selected on the screen, the setting value of the molding condition can be changed. It further has a means for displaying a screen on the touch panel. A part of the setting screen may have an end button for returning to the setting value list screen, and a part of the setting value list screen may have a return button for returning to the alarm screen.

  According to the present invention, when an alarm screen (such as an alarm comment) is displayed on the operation display unit, by operating a setting button on the alarm screen, information on molding conditions corresponding to the alarm comment is displayed on the set value list screen. Therefore, the molding condition causing the alarm can be easily determined. If the setting screen is displayed when a desired item is selected from the molding conditions displayed on the setting value list screen, resetting of molding conditions and fine adjustment of setting values can be performed using this setting screen. Etc. can be performed efficiently.

The perspective view which shows one Embodiment of a molding machine. The block diagram of the molding machine shown by FIG. The figure which shows an example of an alarm screen. The figure which shows an example of a setting value list screen. The figure which shows an example of a setting screen. The figure which shows an example of a diagnostic detection part, an alarm comment list, and a diagnostic code group list. The figure which shows a part of shaping | molding condition group list corresponding to signal name "LS4". The figure which shows a part of shaping | molding condition group list corresponding to signal name "HN". The figure which shows a part of shaping | molding condition group list corresponding to signal name "FILSTD". The flowchart which shows an example of the flow of the process by one Embodiment of a control apparatus.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows an electric injection molding machine 10 which is an example of a molding machine. Hereinafter, the injection molding machine 10 is simply referred to as a molding machine 10. FIG. 2 is a block diagram showing an outline of the configuration of the molding machine 10.

  The molding machine 10 includes a body 11 including a frame as a base body, a molding machine main body 12 disposed on the body 11, a control device 13 in which a computer program for controlling a molding operation is incorporated, a human machine An operation display unit 14 that functions as an interface unit is provided. The molding machine body 12 includes an injection unit 15 and a mold clamping unit 16. Various types of peripheral devices 17 (shown in FIG. 2) are attached to the molding machine main body 12 including a molded product take-out mechanism.

  The operation display unit 14 includes a touch panel 14a and an input operation key unit 14b. The touch panel 14a displays a display screen for various displays, displays various switch units, and is configured to perform an input operation when a desired switch unit is operated (touched). The input operation key unit 14b is provided with a mechanical switch, a display lamp, or the like that is operated when the molding machine 10 is operated or stopped.

  An example of the injection unit 15 is for heating a barrel 20, a screw 21 provided inside the barrel 20 so as to be able to rotate and advance / retreat, a screw drive mechanism 22 for driving the screw 21, and a material such as resin. Heating device (not shown). The injection unit 15 can move forward and backward along a rail 25 provided on the body 11. A nozzle 26 is provided at the tip of the barrel 20.

  The mold clamping unit 16 includes a fixed die plate 30, a movable die plate 31, a mold clamping drive mechanism 32, and the like. A fixed die (not shown) is attached to the fixed die plate 30. A moving die (not shown) is attached to the moving die plate 31. By driving the movable die plate 31 by the mold clamping drive mechanism 32, the movable mold is opened and closed with respect to the fixed mold. A cavity for the molded product is formed between the fixed mold and the movable mold.

  The injection unit 15 is controlled by the control device 13 so that the material melted in the barrel 20 is injected from the nozzle 26 toward the cavity of the mold. A temperature sensor (not shown) is provided in the barrel 20, and the material in the barrel 20 is maintained at a predetermined temperature by feeding back the output of the temperature sensor to a temperature control unit (not shown) of the control device 13. I am doing so.

  FIG. 2 is a block diagram showing the molding machine body 12, the control device 13, the operation display unit 14, and the like. The control device 13 includes a diagnosis detection unit 40, a CPU (Central Processing Unit) 41 that functions as a control calculation means, a ROM (Reed Only Memory) 42 that is one of nonvolatile memories, and a RAM that functions as a work memory. (Random Access Memory) 43, a display controller 44, a general-purpose operating system (general-purpose OS) 45, a storage device 46 for storing various data, and the like. In the storage device 46, data relating to molding conditions set for each type of molded product is stored with identification information.

  The ROM 42 of the control device 13 stores a program for operating the molding machine 10 in a predetermined sequence. Based on this program, the CPU 41 outputs signals for peripheral devices 17 such as the injection unit 15, the mold clamping unit 16, and a molded product take-out mechanism (not shown) in a predetermined order to close the mold, inject, and hold the pressure. A series of molding cycles such as weighing and mold opening are repeated.

  While the molding machine 10 is operating, the diagnosis detection unit 40 constantly monitors a specific time, pressure, position, etc. during molding based on signals from detection units such as various sensors, and abnormalities are detected. Sometimes, a signal for an alarm screen 50 described below is output to the operation display unit 14, and the alarm screen 50 is output to the touch panel 14a. That is, the diagnosis detection unit 40 functions as means for displaying the alarm screen 50 on the touch panel 14 a of the operation display unit 14.

  An example of the alarm comment is a quality monitor comment that is output when the molded product is not within the normal allowable range. As other comments, for example, various comments (shown in FIG. 6) are prepared in response to a request from the user using the molding machine 10, such as an operation comment, a stop comment, an inspection comment, and a production comment.

  FIG. 3 is an example of an alarm screen 50 displayed on the touch panel 14a. This alarm screen 50 includes a diagnosis code 51 and an alarm comment 52 which is an example of a quality monitor comment. “Q149” in the alarm screen 50 is an example of the diagnostic code 51. “Q149” indicates that an alarm relating to the filling time has occurred. A setting button 53 is provided at the right end of the alarm screen 50.

  When the setting button 53 on the alarm screen 50 is operated (touched), a setting value list screen 60 shown in FIG. 4 is displayed. The set value list screen 60 may be switched from the alarm screen 50 or may be displayed on a part of the alarm screen 50 in a pop-up window method.

  The example of the set value list screen 60 shown in FIG. 4 shows a case where a filling time monitor error of the diagnostic code “Q149” has occurred. In the item column 61 of the setting value list screen 60, signal names (for example, LS4, VI1, FILSTD, FILALW, HN, etc.) indicating molding conditions are shown in order from the top. In the name column 62, the names of the respective molding conditions (signal names) are specifically shown in order from the top. In the setting value column 63, setting values for each molding condition (signal name) are shown in order from the top. On the upper part of the setting value list screen 60, a return button 64 used when closing the setting value list screen 60 is displayed. When the return button 64 is operated (touched), the screen returns to the alarm screen 50 of FIG.

  Of the molding conditions displayed on the set value list screen 60, when it is necessary to adjust the set value, the desired item column 61, the name column 62 or the set value column 63 is touched on the screen 60. Then, a setting screen 70 shown as an example in FIG. 5 is displayed. The setting screen 70 may be switched from the setting value list screen 60 or may be displayed on a part of the setting value list screen 60 by a pop-up window method.

  An example of the setting screen 70 shown in FIG. 5 displays the holding pressure switching position of the signal name “LS4”. The setting screen 70 includes an increase button 71 that is operated when the setting value displayed on the setting value display unit 70a is increased, a decrease button 72 that is operated when the setting value is decreased, and when the setting screen 70 is closed. An end button 73 to be operated is displayed. By operating (touching) the increase button 71 or the decrease button 72, the set value of the set value display unit 70a can be changed. When the end button 73 is operated, the screen returns to the set value list screen 60 of FIG.

  As shown in FIG. 6, the diagnosis detection unit 40 has an alarm comment list 80 for displaying messages corresponding to, for example, operation comments, stop comments, quality monitor comments, inspection comments, production comments, and the like. Each alarm comment list 80 includes a plurality of diagnostic codes 51 and alarm comments 52, respectively. In the quality monitor comment, for example, several tens to several hundreds of diagnostic codes 51 and an alarm comment 52 for each diagnostic code 51 are input.

  Further, a diagnostic code group list 85 is added for each alarm comment 52 in the alarm comment list 80, that is, for each diagnostic code 51. In the example shown in FIG. 6, a part of the diagnostic code group list 85 corresponding to the diagnostic code “Q149” is shown. The diagnostic code group list 85 includes a diagnostic code group column 86 indicating a group (classification item) related to each diagnostic code 51 and the alarm comment 52, and a check column 87. Among the plurality of classification items provided in the diagnostic code group column 86, a check is input in advance in the check column 87 of a specific classification item related to the diagnostic code (for example, “Q149”).

  In the example of the diagnostic code group list 85 corresponding to the diagnostic code “Q149” shown in FIG. 6, a check is entered in the check fields 87 of “filling”, “barrel temperature”, and “filling time monitor”. Other classification items (not shown) may be checked. The alarm comment list 80 and the diagnostic code group list 85 are stored in a storage means such as a memory (storage device 46 shown in FIG. 2) of the control device 13, for example.

  On the other hand, FIG. 7 shows a signal name 90 indicating each molding condition for each of various molding conditions, detailed information (molding condition information) 91 corresponding to each signal name 90, and molding conditions created for each signal name 90. An example of the group list 92 is shown. The molding condition group list 92 has a molding condition group column 93 indicating a group (classification item) used in the molding machine 10 and a check column 94 therefor. Among the plurality of classification items input in the molding condition group column 93, a check is input in advance for a specific classification item related to each signal name 90 (for example, “LS4”).

  In the example of the molding condition group list 92 corresponding to the molding condition “LS4” shown in FIG. 7, check boxes 94 for “injection”, “position”, “filling”, and “FIT” are checked. The other classification items (not shown) may be checked. The molding condition group list 92 is stored in storage means such as a memory (storage device 46 shown in FIG. 2) of the control device 13, for example.

FIG. 8 shows a part of the molding condition group list 92 corresponding to the molding condition “HN”. In the example of the molding condition group list 92, a check is entered in the “barrel temperature” check column 94.
FIG. 9 shows a molding condition group list 92 corresponding to the molding condition “FILSTD”. In the example of the molding condition group list 92, a check column 94 of “filling time monitor” is checked.

  When the alarm screen 50 (an example is shown in FIG. 3) is displayed by the diagnosis detection unit 40, the control device 13 performs the process described below, thereby setting value list screen 60 (an example is shown in FIG. 4). A computer program is set up to display. Hereinafter, a flow of processing for creating the setting value list screen 60 will be described. In the following description, the flow of processing of the quality monitor comment will be described, but the flow of processing of other comments, such as operation comments, stop comments, inspection comments, production comments, and the like is also the same.

  The alarm screen 50 is displayed on the touch panel 14 a of the operation display unit 14 by the diagnosis detection unit 40. The alarm screen 50 includes a diagnostic code 51, an alarm comment 52, and the like. When the setting button 53 on the alarm screen 50 is operated, processing for creating the setting value list screen 60 is performed according to the flowchart shown in FIG.

  When the setting button 53 is operated, the setting value list screen 60 is initialized in Act 1 in FIG. Thereafter, in Act 2, a diagnostic code group list 85 (shown in FIG. 6) corresponding to the diagnostic code 51 is called from the memory. That is, Act2 functions as a means for calling the diagnostic code group list 85 corresponding to the alarm comment 52 on the alarm screen 50 when the setting button 53 on the alarm screen 50 is operated.

  In Act 3, the check column 87 of the diagnostic code group list 85 is searched, and the specific classification item for which the check is input is extracted. If there is an extracted category item, the process proceeds to Act 4, and a search number is set for the category item. In the example of FIG. 6, since checks are entered in “filling”, “barrel temperature”, and “filling time monitor” in the diagnostic code group list 85, in Act4, first, a search number is assigned to “filling”, and Act5 is assigned. move on.

  In Act 5, the molding condition group list 92 is called for each molding condition (signal name 90) shown in FIG. 7, the specific classification item checked in each called molding condition group list 92, and the search It is verified whether or not specific classification items (for example, “filling”) to which numbers are assigned match each other.

  If it is determined in Act 6 that there is a matching classification item, the process proceeds to Act 7, and data of detailed information 91 (molding condition information, etc.) corresponding to the molding condition (signal name 90) corresponding to the matched classification item ) Is stored in the memory for the set value list screen 60.

  For example, “filling” in which the check column 87 of the diagnostic code group list 85 shown in FIG. 6 is checked is checked in “filling” in the molding condition group list 92 of the molding condition “LS4” shown in FIG. Therefore, the data of the detailed information 91 regarding the molding condition “LS4” is stored in the memory for the set value list screen 60. Although not shown, since “filling” is also checked in the molding condition group list of the molding condition “VI14”, detailed information data regarding the molding condition “VI14” is also added to the memory for the setting value list screen 60. .

  In this way, the specific classification item (for example, “filling”) first assigned with the search number is searched for whether or not it matches the classification item checked in the molding condition group list 92 for each molding condition (matching) If there are classification items that match each other, the data of the detailed information 91 corresponding to the molding condition (signal name 90) is added to the memory for the set value list screen 60.

  That is, Act5 to Act7 collate a specific classification item among the classification items in the called diagnostic code group list 85 with each classification item in the molding condition group list 92, and when both match each other, the classification It functions as a means for adding molding condition information having a molding condition group list 92 including items to the set value list screen 60.

  The search number is updated in Act 8, and the process proceeds to Act 9. If it is determined in Act 9 that the search number has not ended, the process returns to Act 5 again, and the specific classification item (for example, “barrel temperature”) assigned with the next search number is checked in the molding condition group list 92. If there is a matching item with a certain classification item, and if there is a matching classification item, the data of the detailed information 91 corresponding to the molding condition (signal name 90) is stored in the memory for the set value list screen 60 To join.

  For example, for “barrel temperature” for which the diagnostic code group list 85 is checked, “barrel temperature” in the molding condition group list 92 for “HN” is checked as shown in FIG. The data of the detailed information 91 is added to the memory for the setting value list screen 60. For the “filling time monitor” for which the diagnostic code group list 85 is checked, the “filling time monitor” in the molding condition group list 92 for “FILSTD” is checked as shown in FIG. Data of detailed information 91 relating to “FILSTD” is added to the memory for the set value list screen 60.

  After the above-described processing (Act5 to Act9), the search for each classification item and the extraction of the molding conditions are completed, and if it is determined that all the search numbers have been completed in Act9, the process proceeds to Act10. In Act 10, the setting value list screen 60 (FIG. 4) stored in the memory is displayed on the touch panel 14a. That is, Act10 functions as a means for displaying the setting value list screen 60 on the touch panel 14a.

  If there is a molding condition to be selected from among a plurality of molding conditions displayed on the setting value list screen 60, touching the item field 61, the name field 62 or the setting value field 63, for example, a setting screen 70 shown in FIG. Is displayed. An operator or the like can change the setting value while viewing the setting screen 70. When the end button 73 on the setting screen 70 is operated, the setting value list screen 60 in FIG. 4 is displayed again. Further, when the return button 64 on the set value list screen 60 is operated, the screen returns to the alarm screen 50 of FIG.

  As described above, according to this embodiment, when the alarm comment 52 is displayed by the diagnosis detection unit 40, the setting value list screen 60 related to the alarm comment 52 is displayed by operating the setting button 53 in the alarm screen 50. Is displayed. Furthermore, if necessary, the setting screen 70 can be displayed by operating (touching) one of the plurality of molding conditions displayed on the setting value list screen 60. The setting value of the molding condition can be changed. For this reason, according to the state of the molding machine 10 that changes every moment during molding, the set value can be reset or fine-tuned so that the optimum molding conditions can be achieved, and the quality of the molded product can be maintained at a high level. can do.

  That is, in this embodiment, when the setting button 53 on the alarm screen 50 is operated, the specific classification item in the diagnostic code group list 85 corresponding to the alarm comment, the specific classification item in the molding condition group list 92, and Whether there is a matching item is sequentially searched, and when there is a matching classification item, information on the molding condition (for example, a set value) is sequentially added to the set value list screen 60.

  Instead of doing in this way, it is also conceivable that all the molding condition information that can cover all the alarm comments is stored in the memory in advance. However, there are many types of alarm comments (for example, hundreds of types), and if there are thousands of molding conditions (signal names) related to each alarm comment, a huge amount of memory is required, which is necessary for data input. The time and effort is also significantly increased. On the other hand, in the present embodiment, as described above, the molding condition related to the alarm comment is extracted based on the classification item when the alarm comment is displayed, and the setting value list screen 60 is created and displayed. The memory required for displaying the setting value list screen 60 for various alarm comments can be saved, and the labor required for data input for the setting value list screen 60 can be reduced.

  In practicing the present invention, a specific form of each screen displayed on the operation display unit and the like is required, including a diagnostic code, an alarm comment, a diagnostic code group list, a molding condition signal name, and a molding condition group list. It goes without saying that various modifications can be made according to the above. The molding conditions may include a servo parameter, speed, position, pressure, and time of the molding machine. In addition to the injection molding machine, the present invention can be similarly applied to any molding machine that uses a die such as a die-cast molding machine.

  DESCRIPTION OF SYMBOLS 10 ... Molding machine, 13 ... Control apparatus, 14 ... Operation display part (human machine interface part), 14a ... Touch panel, 40 ... Diagnosis detection part, 46 ... Memory | storage device, 50 ... Alarm screen, 51 ... Diagnosis code, 52 ... Alarm comment, 53 ... setting button, 60 ... setting value list screen, 64 ... return button, 70 ... setting screen, 85 ... diagnostic code group list, 92 ... molding condition group list.

Claims (6)

A control device for a molding machine,
An operation display unit having a touch panel;
Means for displaying an alarm screen including an alarm comment on the touch panel;
Means for storing a diagnostic code group list having a plurality of classification items for each alarm comment for each type of alarm comment;
Means for storing a molding condition group list having a plurality of classification items for each molding condition for each signal name of various molding conditions;
Means for calling the diagnostic code group list corresponding to an alarm comment on the alarm screen when a setting button of the alarm screen displayed on the touch panel is operated;
A specific classification item in each of the classification items in the called diagnostic code group list is compared with each classification item in the molding condition group list, and when both match each other, the molding condition group that includes the classification item is included Means for adding molding condition information having a list to the set value list screen;
Means for displaying the set value list screen on the touch panel;
A control device for a molding machine, comprising:   Means for displaying, on the touch panel, a setting screen capable of changing a setting value of the molding condition when any of the molding conditions displayed on the setting value list screen is selected on the screen. The molding machine control device according to claim 1, further comprising: Some of the setting screen having the Exit button Returns to the said setting value list screen closes the setting screen, a portion of the set value list screen, to return from the set value list screen on the alarm screen The control device for a molding machine according to claim 2, further comprising a return button. A method for controlling a molding machine,
Display the alarm screen including alarm comments on the touch panel of the operation display section,
A diagnostic code group list having a plurality of classification items related to each alarm comment is stored in a memory for each alarm comment.
A molding condition group list having a plurality of classification items related to each molding condition for each molding condition is stored in a memory.
When the setting button of the alarm screen displayed on the touch panel is operated, the diagnostic code group list corresponding to the alarm comment on the alarm screen is called from the memory,
A specific classification item in each of the classification items in the called diagnostic code group list is compared with each classification item in the molding condition group list, and when both match each other, the molding condition group that includes the classification item is included Add information on molding conditions with a list to the set value list screen,
Display the set value list screen on the touch panel,
When any molding condition is selected from the plurality of molding conditions displayed on the setting value list screen, a setting screen on which the setting value of the selected molding condition can be changed is displayed on the touch panel. A method for controlling a molding machine. A part of the setting screen includes a setting value display unit, a button for increasing the setting value displayed on the setting value display unit, a button for decreasing the setting value, and the setting value list by closing the setting screen. control method for a molding machine according to claim 4, characterized in that displaying the end button returns to the screen.   5. The molding machine control method according to claim 4, wherein the molding conditions include servo parameters, speed, position, pressure, and time of the molding machine.

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