JP4864165B2 - Die change control device for punch press with automatic die changer - Google Patents

Description

  The present invention relates to a die change control device for a punch press with an automatic die change device.

  Conventional punch press machines with automatic die changer (ie, ATC device) can manage the state of die mounting of processing machines and ATC devices in real time, from automatic professionals (processing data creation device) and cell line devices. An optimum mold exchanging operation pattern can be selected and executed with respect to the mold exchanging command generated after being sent out.

  Further, when a failure (alarm state) occurs and the machine is stopped during the mold exchanging operation, when the failure is canceled by an automatic operation, it can be updated including the subsequent database.

  Further, when it is determined that recovery by automatic operation is impossible from the machine state, a display instruction is given on the sub-console so that the operator performs manual failure recovery operation. When this manual failure recovery operation is completed, the final database state can be displayed.

  However, in such a conventional technique, when a failure occurs during the mold exchanging operation, in order to recognize and judge the machine stop state at that time, when performing the failure recovery operation automatically, Although the database can be displayed with accurate information after recovery, if the recovery operation is performed manually, it does not have information on how far the mold replacement operation has been completed. For this reason, the operator must determine the database status confirmation setting. When a plurality of molds are to be exchanged, the operator's operation becomes complicated, and the actual mold loading state and the contents of the database There is a problem that discrepancies may occur.

  In addition, although the alarm history as an NC device is stored, but the cause of the occurrence is not stored, when the restoration operation is completed, the cause of the failure that occurred during the mold exchanging operation is cleared. There is a problem that the tendency of the failure factor and the problem of the function cannot be confirmed later.

  In addition, when determining whether automatic recovery is possible, there are only conditions such as the mold clamping state of the mold replacement hand and whether the machine is stopped in the interference area of the main body or storage. In addition, if the mold exchanging hand is manually operated, there is a problem in that there is a discrepancy between the state at the time of the failure and the start of the determination of availability, and it is only possible to determine whether automatic recovery is possible.

  Furthermore, since the current mold exchanging process defines the mold exchanging operation specified by the optimum mold operation pattern as a series of flows by one program, a plurality of continuous processes are defined. There is a problem that it is not possible to automatically memorize and to analyze in detail later what kind of process and under what conditions the machine stopped.

  The present invention has been made paying attention to the problems of the prior art as described above, and the object of the present invention is to improve the accuracy of database update after manual failure recovery and the past failure situation It is an object of the present invention to provide a die change control device for a punch press with an automatic die change device that can verify the above at any time.

  According to the first aspect of the present invention, there is provided a die change control device for a punch press with an automatic die changer. The punch with an automatic die changer for exchanging a die attached to the punch press with a die stored in a storage. A press die change control device, wherein an automatic die change and automatic failure recovery operation process is defined by disassembling for each function, and an operation pattern control unit that controls the disassembled and defined operation as an operation pattern; The operation pattern is managed by the state transition number, and the operation pattern recognition unit that always recognizes which state the operation is being executed, and the mold mounting information on the mold to be replaced based on the mold replacement command Mold change operation pattern execution unit that automatically selects and executes a die change operation pattern compared to the above state, punch or die clamp state when a failure occurs, punch detection state, ATC interference Automatic recovery determination unit that determines whether or not a failure that occurred from the zone state and state transition number can be recovered automatically, a recovery operation selection unit that automatically selects the failure recovery operation, and mold replacement When a failure occurs, a failure data storage unit that stores information regarding the failure and a failure data display unit that displays the failure data stored in the failure data storage unit are provided.

  Therefore, the operation pattern control unit defines the automatic mold replacement and the automatic failure recovery operation by decomposing each function, and controls the defined operation as an operation pattern. At this time, the operation pattern recognition unit manages the operation pattern with the state transition number and always recognizes which state the operation is executing.

  In addition, the mold replacement operation pattern execution unit automatically selects and executes the mold replacement operation pattern by comparing the mold to be replaced with the mold mounting information based on the mold replacement command. Can be performed automatically. The automatic recovery determination unit determines whether or not the failure recovery operation can be automatically recovered from the punch or die clamping state, punch detection state, ATC interference area state, state transition number, etc. at the time of failure. Based on the above, the recovery operation selection unit automatically selects the failure recovery operation.

  Furthermore, if a failure occurs during the mold exchange, the failure data storage unit stores information about the failure that occurred and displays the failure data on the failure data display unit, so what failure is at what point, It is possible to know how the generated mold was generated for which mold to be replaced, and appropriate processing can be performed.

  According to a second aspect of the present invention, there is provided a die change control device for a punch press with an automatic die changer according to a second aspect of the present invention. It includes data related to the exchange command, failure occurrence date and time, alarm number of the failure that occurred, mold replacement operation pattern, state transition number, storage number, die number, turret number, completion / incomplete, and status.

  Therefore, as fault data, at least the mold exchange command, fault occurrence date and time, alarm number of the fault that occurred, mold exchange operation pattern, state transition number, storage number, die number, turret number, completion / incomplete, status Since data is included, it is possible to grasp the fault and perform processing.

  In the die change control device of the punch press with the automatic die change device according to the first aspect of the invention, the operation pattern control unit defines and defines the automatic die change and the automatic failure recovery operation for each function. The operation is controlled as an operation pattern. At this time, the operation pattern recognition unit manages the operation pattern with the state transition number, and can always recognize which state the operation is executing.

  In addition, the mold replacement operation pattern execution unit automatically selects and executes the mold replacement operation pattern by comparing the mold to be replaced with the mold mounting information based on the mold replacement command. Can be performed automatically. The automatic recovery determination unit determines whether or not the failure recovery operation can be automatically recovered from the punch or die clamping state, punch detection state, ATC interference area state, state transition number, etc. at the time of failure. Based on the above, the recovery operation selection unit automatically selects the failure recovery operation.

  Furthermore, if a failure occurs during the mold exchange, the failure data storage unit stores information about the failure that occurred and displays the failure data on the failure data display unit, so what failure is at what point, It is possible to know how it occurred and to perform appropriate processing.

  In the die change control device of the punch press with the automatic die change device according to the invention of claim 2, at least as the failure data, the die change command, the failure occurrence date and time, the alarm number of the failure that has occurred, the die change operation pattern, Since the data regarding the state transition number, storage number, die number, turret number, completed / uncompleted, and status are included, it is possible to grasp the fault and perform processing.

It is a block block diagram which shows the die change control apparatus of the punch press with an automatic die change apparatus concerning this invention. It is a perspective view which shows the positional relationship of a turret punch press, ATC, and storage. It is a flowchart which shows the functional unit division | segmentation control of metal mold | die replacement | exchange operation | movement. It is a table | surface which shows a metal mold | die installation condition. It is process drawing which shows metal mold | die exchange. It is a table | surface which shows mounting die information. It is a table | surface (1/2) which shows the example of the functional unit division | segmentation control of metal mold | die replacement | exchange operation | movement. It is a table | surface (2/2) which shows the example of the functional unit division | segmentation control of metal mold | die replacement | exchange operation | movement. It is a table | surface (1/3) which shows the example of a metal mold | die replacement | exchange operation | movement pattern. It is a table | surface (2/3) which shows the example of a metal mold | die exchange operation pattern. It is a table | surface (3/3) which shows the example of a metal mold | die exchange operation pattern. It is a flowchart which shows the process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. (A) is failure recovery operation pattern judgment data, and (B) is failure recovery history display data. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a table | surface which shows failure recovery operation | movement data. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is a screen which shows 1 process of a failure generation process. It is an example of a failure recovery history display screen. It is an example of a failure recovery history display screen.

Embodiments of the present invention will be described with reference to the drawings.
First, FIG. 2 shows a turret punch press 1, a storage 3 that stores the punch P and the die D, a punch P and a die D that are mounted on the upper turret 5U and the lower turret 5L of the turret punch press 1, and the storage. 3 shows an automatic mold changer 9 (hereinafter referred to as “ATC”) for exchanging the punch P and the die D stored in the upper storage turret 7U and the lower storage turret 7L. Since it is known, detailed description is omitted.

  In the ATC 9, the axis that vertically moves the punch changer arm 13 having the punch gripper 11 at the tip is represented by the Pz axis, the pivot axis in the horizontal plane of the punch changer arm 13 is represented by the R axis, and the telescopic axis of the punch changer arm 13 is represented by the Ps axis. Further, the axis that moves the die changer arm 17 having the die gripper 15 at the tip in the vertical direction is represented by the Dz axis, the turning axis in the horizontal plane of the die changer arm 17 is represented by the Dg axis, and the expansion and contraction axis of the die changer arm 17 is represented by the Ds axis. An NC control device 19 (see FIG. 1) for controlling the turret punch press 1, the ATC 9, and the storage 3 is provided in the vicinity of the turret punch press 1. The NC control device 19 controls the ATC 9. An omitted ATC controller is connected.

  Next, based on FIG. 1, the NC control device 19 as a die change control device of a punch press with an automatic die change device according to the present invention will be described. In the NC control device 19, the CPU 21 is connected to an input means (for example, a keyboard) 23 for inputting various data and an output means (for example, a CRT) 25 for displaying various data.

  Further, the CPU 21 defines the process of automatic mold change and automatic failure recovery operation by disassembling each function, and controls the operation pattern control unit 27 for controlling the disassembled and defined operation as an operation pattern. An operation pattern recognition unit 29 that is managed by the state transition number and always recognizes which state the operation is being executed on, and the die that is to be exchanged based on the die exchange command In comparison, a mold exchanging operation pattern executing unit 31 that automatically selects and executes a mold exchanging operation pattern, and a clamp state of the punch P and the die D when a failure occurs, a detection state of the punch P, and an interference area state of the ATC 9 , An automatic recovery determination unit 33 that determines whether or not a fault that has occurred can be recovered by an automatic operation from the state transition number, a recovery operation selection unit 35 that automatically selects a failure recovery operation, If a failure occurs during the replacement and fault data storage unit 37 that stores information about the fault, such fault data display unit 39 for displaying the fault data stored in the fault data storage unit is connected.

  Next, based on FIG. 3 to FIG. 28, a die change control method for a punch press with an automatic die changer according to the present invention will be described. This mold replacement control method includes three processing elements: (1) functional unit division control of mold replacement operation, (2) failure occurrence processing, and (3) failure recovery history display.

<(1) Functional unit division control of mold changing operation>
In the functional unit division control of die change operation, die change operation / failure recovery operation is divided for each function, and the function change is a number in the die change operation / failure recovery operation pattern that is a collection of the functions in real time Monitor with. Then, in response to a mold replacement command from an automatic professional or a cell line device, an optimum mold replacement operation pattern is automatically selected and executed based on the current mold mounting information.

  That is, referring to FIG. 3, when an entry is made (step S1) and a die replacement command is received (step S2), the current die is based on the stored die mounting information as shown in FIG. The optimum mold replacement operation pattern is selected from the mounted state, and the target mold mounted state is confirmed (step S3).

  As shown in FIG. 4, a machine mold mounting state is defined, and an optimal mold replacement operation pattern is selected when a mold replacement command is received. In this way, by forming a mold exchange operation pattern into a matrix, the buffer area for preparing the target mold can be added to the addition of the mold exchange operation pattern and the pre-read mold exchange command in the table. Be flexible in responding to additions.

  The presence / absence of mold replacement is determined (step S4). If there is no mold replacement, the process returns to step S2 to receive a mold replacement command. If there is mold exchange, the optimum mold exchange operation pattern is selected (step S5), mold exchange set data is created and transmitted (step S6), and mold exchange activation is notified (step S7). ).

  Here, the completion of the mold exchanging operation is determined (step S8), and when the mold exchanging is completed normally, the mold mounting information is updated by the end of the mold exchanging operation (step S9), and the process is ended. (Step S10). On the other hand, if the mold replacement is not completed in step S8, the detection of the mold replacement completion notification is awaited.

  5A to 5G, a die for exchanging the punch P and the die D attached to the upper turret 5U and the die D attached to the lower turret 5L with the punch P and die D accommodated in the storage 3 is shown. An example of the process of the exchange operation is shown.

  Before starting the mold exchanging operation, the ATC 9 stands by between the upper and lower turrets 5U, 5L and the storage 3 (see FIG. 5A).

  When the mold exchanging operation is started, the upper and lower turrets 5U and 5L are rotated to position the punch P and the die D to be replaced at the mold exchanging positions K1 and K2, respectively, and the punch P and the die D on which the ATC 9 is positioned are moved. Go to removal (see FIG. 5B).

  When the punch P and the die D are removed from the upper and lower turrets 5U and 5L, the ATC 9 moves to the storage 3 side, positions a predetermined position of the storage 3 at the die replacement position K3, and stores the punch P and the die D (FIG. 5 (C)).

  When the punch P and the die D are stored in the storage 3, the ATC 9 waits away from the storage 3, rotates the storage turrets 7U and 7L, and positions the punch P and the die D to be used next at the die replacement position K3. (See FIG. 5D).

  The ATC 9 removes the punch P and the die D positioned at the die replacement position K3 (see FIG. 5E).

  After the ATC 9 holding the new punch P and the die D is moved to the die replacement positions K1, K2, and mounted on the upper and lower turrets 5U, 5L (see FIG. 5F), the ATC 9 waits at the standby position (see FIG. 5). 5 (G)).

  FIG. 6 shows in real time the state of the molds mounted on the turret punch press 1 and the ATC 9, and the optimal mold replacement operation pattern in response to a mold replacement command generated from an automatic professional or cell line control device. An example of mold mounting information for selecting is shown.

  This mold mounting information is stored as information on unique information (shape, dimensions, die clearance, etc.) of all the molds mounted on the turret punch press 1 and where the molds are currently mounted. Yes. Therefore, when the location is changed from the turret punch press 1 to the storage 3 or the replacement preparation buffer position, the mold mounting information is updated at the timing when the change is completed.

  Operations are managed by transition numbers by dividing the process into steps shown in FIGS. 5A to 5G as described above. As an example, in FIGS. 7 and 8, the automatic mold exchanging operation pattern A (hereinafter referred to as “pattern A”) to the pattern H are shown in the table. For example, in pattern A, transition number 1 is the standby position, transition number 2 is the processing machine take-out approach position, transition number 3 is the processing machine take-out position, transition number 4 is the standby position from the upper and lower turrets 5U, 5L to the storage 3 ( Transition number 5 is the storage set approach position, transition number 6 is the storage set position, transition number 7 is the standby position from the storage 3 to the storage 3 (no mold), transition number 8 is the storage retrieval approach position, Transition number 9 is the storage take-out position, transition number 10 is the standby position (with mold) from the storage 3 to the upper and lower turrets 5U, 5L, transition number 11 is the processing machine set approach position, transition number 12 is the processing machine set position, Transition number 13 means a standby position (all axes). The patterns B to H are as shown in the table.

  9 to 11 show set data for each automatic mold exchanging operation pattern sent from the NC device 19 to the ATC control device. The automatic mold exchanging operation is transferred from the NC unit 19 to the ATC control unit for each pattern. However, as shown in FIGS. 9 to 11, the transferred data is different for each mold exchanging operation pattern. Therefore, it is necessary to set appropriate data for the ATC control device on the NC device 19 side.

  In FIGS. 9 to 11, Δ indicates that the standby position data of the Ps axis is set (only the die is replaced), and ▲ indicates that it differs depending on the replacement pattern / registration status. Although the-mark is not read by the ISA ladder, it is desirable to clear it to zero to prevent malfunction. When the corresponding coordinate data is set in the table, the same station data may be duplicated, but the data is set at a designated location.

<(2) Failure occurrence processing>
In the failure occurrence process, the failure state and the state transition number generated during the mold replacement operation are stored in the failure recovery history. Then, by recognizing the machine state and the state transition number when the failure occurs, the optimum recovery operation pattern when the failure occurs is automatically selected and executed.

  That is, referring to FIG. 12, when an entry is made (step S11) and an alarm occurrence is received during die replacement (step S12), reception of occurrence alarm information, reception of a state transition number, etc. are displayed (FIG. 13). reference). And since it requests | requires notifying of the state of a machine (step S13), after canceling a failure factor, an operator presses a confirmation button and performs notification of a machine state. At this time, when the cause of the failure is not released (see FIG. 14), alarm information that has not been released at this time is displayed to prompt the operator to release the alarm. However, if the generated alarm cannot be cleared, the power is turned off and the process ends.

  When the failure factor is canceled, the automatic recovery determination unit 33 determines whether or not the failure can be automatically recovered (step S14), so that the NC device 19 sends the current ATC to the ATC control device. Request status. In response to the request, the ATC control device notifies failure recovery operation pattern judgment data (see FIG. 15A). In the NC device 19, the recovery operation selection unit 35 automatically selects an optimal failure recovery operation pattern based on the failure recovery operation pattern determination data. When the NC device 19 can select an optimum failure recovery operation pattern based on the failure occurrence data received from the ATC control device, the NC device 19 transmits failure recovery operation data to the ATC control device and displays the failure recovery history. Data is created (see FIG. 15B).

  At this time, since it is impossible to determine whether automatic recovery is possible unless ATC 9 is online, first, ATC 9 is urged to be online (see FIG. 16). If ATC 9 is not online, the screen shown in FIG. 17 is displayed. Therefore, ATC 9 is brought online. If an alarm occurs after the ATC 9 is brought online (see FIG. 18), step S12 is executed again.

  Next, the automatic recovery determination unit 33 determines whether or not automatic recovery is possible (step S15). If the automatic recovery operation is impossible, the ATC is set offline according to the screen shown in FIG. Perform recovery work with. Then, the location of the mold after manual recovery is selected as complete or incomplete (see FIGS. 20 and 21), and the data is updated (step S16).

  On the other hand, if it is determined in step S15 that automatic recovery is possible (see FIG. 22), the start button is pressed to notify execution of automatic recovery operation (step S17), and the ATC control device is sent from the NC device 19. The failure recovery operation is executed based on the failure recovery operation data (see FIG. 23).

  At this time, when an alarm is generated (see FIG. 24) and the alarm cannot be canceled, the power is turned off and the process is terminated. On the other hand, when the alarm can be canceled, the automatic recovery is executed by pressing the start button (see FIG. 25). If a failure occurs during the automatic recovery operation (step S18), the process returns to step S12 and the subsequent steps are repeated.

  When the automatic recovery is completed, the above-described failure recovery display history data is displayed and updated as shown in FIG. 15B (step S19), and the operator waits for the confirmation button to be pressed (see FIG. 26). ).

  As described above, if the failure factor is eliminated automatically (step S15 to step S19) and manually (step S16), the database state can be updated normally. Therefore, the internal state is initialized (step S20) and the failure is recovered. The process ends (step S21).

<(3) Fault recovery history display>
In the failure recovery history display, it is possible to display the failure recovery history stored in the above (2) when confirming the cause of the failure such as the failure occurrence status / trend during the mold exchanging operation (FIG. 27). (See FIG. 28). With this function, it is possible to check the cause of the failure at any time, such as which die has a failure and which step of the die replacement operation has caused the failure.

  In FIG. 27, when a failure occurs, the failure recovery history display data updated by the failure recovery operation pattern determination data can be displayed as a list later. When it is desired to display detailed information about one event, the “detail” display on the screen in FIG. 27 is pushed down to enable more detailed information on the failure that has occurred.

  From the above results, by monitoring the process of the mold exchanging operation in real time, it is possible to select the optimum fault recovery operation regardless of the process of the mold exchanging operation that occurs during the process. The database state can be marched accurately. Further, even when automatic recovery is impossible, data can be updated by manual failure recovery by an operator, so that the accuracy of data can be improved.

  Further, by storing and displaying the failure state occurring during the mold replacement as failure recovery history data, it becomes possible to verify the cause of the failure later.

1 Turret punch press (punch press)
3 Storage 9 ATC (Automatic mold changer)
19 NC control device (Die exchange control device)
27 Operation pattern control unit 29 Operation pattern recognition unit 31 Mold exchange operation pattern execution unit 33 Automatic recovery determination unit 35 Recovery operation selection unit 37 Fault data storage unit 39 Fault data display unit P Punch (die)
D die

Claims (2)

A die change control device for a punch press with an automatic die changer for exchanging a die attached to a punch press with a die stored in a storage,
The process of automatic mold change and automatic failure recovery operation is defined by disassembling for each function, the operation pattern control unit for controlling the operation defined by disassembly as an operation pattern, and managing the operation pattern by the state transition number, An action pattern recognition unit that always recognizes which state the action is executing;
A mold replacement operation pattern execution unit that automatically selects and executes a mold replacement operation pattern by comparing the mold subject to replacement based on the mold replacement command with the state of the mold mounting information, and a failure has occurred. An automatic recovery determination unit that determines whether or not it is possible to automatically recover from a failure caused by a punch or die clamping state, a punch detection state, an ATC interference area state, or a state transition number, and a failure recovery operation A recovery action selection unit that automatically selects
A failure data storage unit for storing information about the failure when a failure occurs during mold replacement, and a failure data display unit for displaying the failure data stored in the failure data storage unit A die change control device for a punch press with an automatic die change device.   The failure data includes data related to a mold replacement command, a failure occurrence date and time, an alarm number of a failure that has occurred, a mold replacement operation pattern, a state transition number, a storage number, a die number, a turret number, completion / incomplete, and status. The die change control device for a punch press with an automatic die change device according to claim 1.

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