JPH07120169B2 - Time chart creation device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a time chart creation device that creates a time chart of each component that constitutes an automatic machine, for example.
In particular, the present invention relates to a time chart creation device capable of creating a time chart that can recognize the operation sequence and operation time of each of the components at a glance.

(Prior Art) Generally, when another automatic machine is added to an already installed and operated automatic machine in a production plant or the like, the operation of the operating automatic machine and the automatic machine to be added It is necessary to compare and examine each operation so as not to interfere with the operation of. Then, as a result of the comparison and examination, when it is necessary to change the operation of the operating automatic machine, it is necessary to clarify the operation to be changed in production control.

In this way, when comparing the operation of an automatic machine or clarifying the operation, generally, a time chart showing the operation is created, and an operator, etc., based on the time chart, I am changing the behavior of and making adjustments.

Conventionally, there are various methods for creating such a time chart, and one of them is as follows. That is, the creator who creates the time chart
While visually confirming the operating sequence of each component that constitutes the automatic machine, the operating time is measured by a stopwatch etc., and the creator shows the operating sequence and operating time of each component based on the records. There is a method of creating a time chart by doing.

Further, as another method, there is a method of making with a time chart making apparatus as shown in FIG. The time chart creating device will be described below with reference to the drawings.

An input device 2 is connected to a sequencer 1 that performs overall control of a machine (not shown), and an input terminal X1 of this input / output device 2 is connected to a limit switch arranged on the machine. The output terminal Y1 of the input / output device 2 is connected to a solenoid valve that operates a cylinder (not shown) arranged in the machine. Then, the sequencer 1 inputs the operating state of the limit switch via the input terminal X1 of the input / output device 2, and the sequencer 1 turns on the solenoid valve via the output terminal Y1 of the input / output device 2 according to a predetermined condition. The cylinder to operate the machine.

Also, a memory 3 is provided inside the sequencer 1, and this memory 3 is provided for each terminal of the input / output device 2 which changes when the sequencer 1 operates a machine.
The ON / OFF state is temporarily stored. In other words, the memory 3 temporarily stores the operating state of the machine at a certain moment.

Further, the sequencer 1 is connected to a storage device 4, and the storage device 4 stores a series of operations of the machine by temporarily storing the operation state of the machine in the memory 3 at a predetermined fixed time. To do. The storage device 4
A printer 5 is connected to the printer 5.
Is to illustrate a series of machine operations stored in the storage device 4 based on the passage of time, and print out a pseudo time chart.

The conventional time chart creation device configured as described above operates as follows.

When the machine is operated by the sequencer 1, for example, when the limit switch and the solenoid valve are respectively activated,
The input terminal X1 and the output terminal Y1 of the input / output device 2 are turned on and off. Then, the memory 3 inside the sequencer 1
Temporarily stores the state in which the input terminal X1 is OFF and the output terminal Y1 is ON, as shown in the figure. Then,
The storage device 4, as shown in the storage content 6 in the figure, has its X1,
It keeps remembering the state of Y1 at fixed intervals. Then, after a predetermined period of time has passed after the machine has operated for one cycle, the printer 5 outputs a time chart as shown in the print result 7 based on the stored contents 6 stored in the storage device 4.

That is, the storage device 4 stores the states of the input and output of the input / output device 2 at constant time intervals, and the time chart is created based on the stored states.

(Problems to be Solved by the Invention) However, as in the conventional case, a time chart creator visually checks the operating sequence of each component constituting the automatic machine and measures the operating time with a stopwatch or the like to obtain a time chart. In the case of creating a time chart, the time chart inevitably contains the measurement error of the creator, and it is very difficult to create a time chart that accurately represents the operating time. For automatic machines whose operation time is extremely short, the creator cannot measure the operation time with a stopwatch etc., and the work for creating the time chart is very complicated. It has drawbacks.

On the other hand, in the case of creating a time chart by the conventional time chart creating device, since it is necessary to store the respective operating states of the respective component parts at fixed time intervals determined as a series of operations, The storage capacity of the storage device 4 becomes large in proportion to the operating time of one cycle of the automatic machine, and when an attempt is made to create a time chart of the automatic machine having a long operating time, the storage capacity of the storage device 4 becomes very large. I will need something.

Also, in an automatic machine that has many inputs and outputs required for machine operation,
In other words, the number of data temporarily stored in the memory 3 of the sequencer 1 is large in an automatic machine or the like that performs a complicated operation, because there are many constituent members to be subjected to the operation measurement. However, there is also a problem in that the processing time may be affected and the control of the automatic machine may be adversely affected.

Furthermore, the time chart printed out from the printer 5 does not show the operation order of each component and the interlock state of these components as shown in the figure,
In such a time chart, there is a problem that the operation of the machine is difficult to understand at first glance when understanding the continuous operation of the machine.

The present invention has been made in view of such conventional problems, and it is possible to recognize at a glance the operating sequence and operating time of each component constituting the automatic machine, and their interlocking states. An object is to provide a time chart creation device that creates a time chart.

(Means for Solving the Problem) The present invention for achieving the above-mentioned object is an execution means for operating a plurality of operation members including a cylinder, a motor, etc. by a predetermined rule or a manual input operation, and the execution means. Execution order storage means for storing the operation order of the plurality of operation members, execution time storage means for storing the operation time of each operation member by the execution means, and the plurality of operations stored in the execution order storage means. Time chart calculation means for calculating the time chart of the plurality of operation members based on the operation order of the members and the operation time of each of the operation members stored in the execution time storage means. It is a thing.

(Operation) The operation of the time chart creating apparatus according to the present invention thus configured will be described below with reference to FIG.

When the execution means 10 operates each operating member according to a predetermined rule or an operation by manual input, the execution time storage means 11
Stores the time that the execution means 10 has activated the actuating member, and the execution order storage means 12 stores the order in which the actuation member has been actuated. And the time chart calculation means
Based on the time and order, 13 performs a calculation for creating a time chart regarding the operation of the operating member.

(Embodiment) An embodiment of the time chart creating apparatus according to the present invention will be described below in detail with reference to the drawings.

FIG. 2 is a schematic configuration diagram of a work fixing device equipped with the time chart creating device according to the present invention.

A lifter 21 for raising and lowering the work 20 is provided with a clamp 22 for fixing the work 20 to the lifter 21. The clamp 22 fixes the work 20 to the lifter 21 by operating a cylinder 23 as an operating member. Further, the lifter 21 moves the work 20 up and down by operating a cylinder 24 as an operating member. And those cylinders
23 and 24 are sequencers that control this work fixing device.
25 (this sequencer 25 has a time chart creating device according to the present invention built therein).

Such a work fixing device operates by the sequencer 25 in the order of the numbers shown in FIG.

When the work 20 is mounted on the lifter 21, the sequencer 25 “clamps” the clamp 22 by operating the cylinder 23.
Direction (the direction in which the work 20 is fixed to the lifter 21) (), and the fact that the cylinder 23 has actuated in the "out" direction is input by the switch X1 (not shown), the cylinder 24 is actuated. Raise ().

Then, the sequencer 25 inputs that the cylinder 24 has actuated in the direction of raising the lifter 21 by a switch X3 (not shown), and when a predetermined work is performed on the work 20, the sequencer 25 actuates the cylinder 24 to cause the lifter 21 to move. When the switch X4 (not shown) is operated to input that the cylinder 24 has operated in the direction of lowering the lifter 21 (), the cylinder 23 is then actuated, and the clamp 22 is in the "return" direction (from the lifter 21 to the work 20). Move it in the direction you can remove it). Then, the sequencer 25 completes the operation of one step of the fixing device by inputting that the cylinder 23 has operated in the "return" direction by X2 (not shown). Incidentally, Y ₁ , Y ₂ , Y ₃ and Y ₄ shown in the figure are
It is the code of the execution instruction of the sequencer 25 which operates the respective cylinders 23, 24 in the respective directions.

The operation of such a work fixing device can be represented by a time chart as shown in FIG.

A time chart creating apparatus according to the present invention for creating such a time chart will be described below with reference to the drawings.

FIG. 4 is a schematic configuration diagram of a time chart creation device according to the present invention.

As shown in the figure, the CPU 3 including an arithmetic control unit and a storage unit
A power supply unit 31, an input unit 32, and an output unit 33 are connected to 0, respectively. A limit switch, a push button switch, and the like attached to the automatic machine are connected to the input unit 32, and contact information of these is input. And
A display device, a solenoid valve, a lamp, and the like are connected to the output unit 33, and these drive devices operate based on a command from the CPU 30. The CPU 30 has therein an execution means, a time chart calculation means, an execution order storage means, and an execution time storage means.

Also, a program loader 34 for inputting a program can be connected to the CPU 30 as needed,
When a new program is input to U30 or the design is changed, the program loader 34 adds or changes the program.

The time chart creation device configured as described above is the fifth
A time chart will be created as follows from the work fixing device that operates based on the process conceptual diagram shown in the figure and the operation flowchart shown in FIG. 6, but before that, the processing of the program by the sequencer 25 Since a unique process is performed as compared with the conventional one, the process will be described below.

The processing conceptual diagram shown in FIG. 5 is a diagram conceptually showing the processing steps of the operation program stored in the sequencer 25. In FIG. 5, P0 and P2 indicate start-up state points, and P1 indicates S10, S20, S30, S40 shows the transition condition of the progress side start, S11, S21, S31, S41 shows the transition condition of the progress side stop, S12, S22, S32, S42 The transition conditions for starting the return side are shown, S13, S23, S33, and S43 show the transition conditions for stopping the return side, and Y1, Y2, Y3, and Y4 show execution instructions.

Each component shown in this conceptual diagram operates as follows based on the flowchart of FIG. 6 showing a part of the execution process. This operation will be described below with reference to FIGS. 2 and 4. It is assumed that the execution instruction Y1 is an instruction to output the clamp 22, and the execution instruction Y2 is an instruction to return the clamp 22 from the output to the input by manual operation.

First, the CPU 30 that comprehensively controls the operation of the work fixing device determines whether or not the state point P0 is active. If it is not active, the process ends (step 1). If it is active, the transition condition S10 It is determined whether is 1. That is, it is determined whether the conditions for executing the execution instruction Y1 are satisfied (step 2). Up to this point, the CPU 30 determines whether the work 20 is placed on the lifter 21 and the preparation for setting the clamp 22 to the output is completed. As a result of this determination, if the transition condition S10 is not 1, in other words, if it is not ready to set the clamp 22 to the output, the processes of steps 1 and 2 are repeated, and conversely, if the transition condition S10 is 1. , The state point P0 is deactivated and the execution instruction Y1 is executed (steps 3, 4). That is, CPU30
Activates cylinder 23 to set clamp 22 out.
Next, it is determined whether the transition condition S11 is 1.
That is, it is determined whether or not the conditions for ending the execution of the execution instruction Y1 are satisfied (step 5). As a result of this judgment, if the transition condition S11 is not 1, the processes of steps 4 and 5 are repeated to continue the execution of the execution instruction Y1, and if the transition condition S11 is 1, in other words, the clamp 22 is set to the output. After that, the state point P1 is activated, and the process (step 6,) ends.

If the CPU 30 determines that the state point P1 is active (step 10), the state point P2 is activated if the state point P1 is active (step 11). That is, the processing of the next step is possible. Then, it is determined whether or not the state point P1 is active. If it is not active, the process is terminated (step 12). If it is active, the transition condition S12 is 1
To determine if. That is, it is determined whether the conditions for executing the execution instruction Y2 are satisfied. Specifically, it is determined whether or not the manually operated push button switch connected to the CPU 30 is operated to prepare to manually return the clamp 2 from the exit to the entrance (step 13). As a result of this judgment, if the transition condition S12 is not 1, the processes of steps 12 and 13 are repeated, and if the transition condition S12 is 1,
The state points P1 and P2 are deactivated and the execution instruction Y2 is executed.
That is, the clamp 2 is manually returned from the exit to the entrance (step 1
4, 15, 16). Next, it is determined whether the transition condition S13 is 1. That is, it is determined whether or not the condition for ending the execution of the execution instruction Y2 is satisfied. That is, it is determined whether the clamp 2 has been manually returned from the exit to the entrance.
(Step 17). If the transition condition S13 is not 1 as a result of this determination, the processing of steps 16 and 17 is repeated to continue execution of the execution instruction Y2. If the transition condition S13 is 1, the state point P0 is activated (step 18 ), The processing ends.
Further, the CPU 30 operates the execution instructions Y3 and Y4 in the same manner as above.

Therefore, the sequencer 25 can automatically operate the work fixing device in the order shown in FIG.
Even if the automatic operation is temporarily stopped in the middle of the cycle by a manual operation and an arbitrary member is operated by the manual operation, the in-situ activation is possible.

Next, an operation of creating a time chart of this work fixing device by the time chart creating device will be described below with reference to the drawings. In addition, the memory for storing the lapse of time from the predetermined time until the transition condition of the progress side start and the transition condition of the progress side stop shown in FIG. , T20, T21, T30, T31, T4
0 and T41.

FIG. 7 is an operation flow chart for storing the time until each execution instruction is activated.

When the program starts, the CPU 30 resets the timer provided in the arithmetic control unit and activates the timer to start time measurement (step 20).
Then, the CPU 30 determines whether or not the transition condition S10 for starting the starting side is ON, and if S10 is ON, the process proceeds to step 22 and S10
If does not turn on, wait until it turns on (step 21). When S10 is turned on in step 21, the CPU 30 stores the elapsed time from the reset in step 20 until S10 is turned on, in other words, stores the start time of the execution instruction Y1 in T10 of the storage unit and executes the execution instruction Y1. (Steps 22 and 23).
Then, the CPU 30 determines whether or not the transition condition S11 for stopping the progressing side is turned on, and if S11 is turned on, advances to step 25 and stops the execution instruction Y1. If S11 is not ON, it waits until it is ON (steps 24 and 25).

Similarly, regarding the elapsed time until each transition condition S20, S21, S30, S31, S40, S41 is turned on, the CPU 30 is
1, T30, T31, T40, T41 (step 26 to step 27, step 28, step 29).

As described above, in this process, the CPU 30 stores the execution time of each execution instruction in the storage unit and creates the time table as shown in FIG.

Further, the CPU 30 stores the execution order of each execution instruction as follows based on the operation flowchart shown in FIG. In the figure, Yn represents an execution instruction, and according to this operation flowchart, for example, one element shown in FIG. 10 is processed in the order of Y1, Y3, Y4, Y2.

The CPU 30 executes one execution instruction based on the operation flowchart, and at the same time, determines whether the execution instruction is a return side execution instruction, and if it is a return side, proceeds to step 35, and if it is not a return side, proceeds to step 31. Do (step 30).
When the CPU 30 determines in step 30 that the execution instruction being executed is not the return execution instruction, the execution instruction opposite to the execution instruction being executed (if Y1 is being executed, the reverse execution instruction is
Y2, and if Y3 as well, the reverse instruction is Y4) to CPU3
The data is stored in the check register 40 of the storage unit of 0 (step 31). Then, the CPU 30 stores the execution instruction being executed in the storage unit (step 32), adds the transition condition of the execution instruction to the execution instruction stored in step 32, and stores it (step 33). Further, an interlock state indicating a state not being executed is added to the execution instruction (stored between the execution instructions) and stored (step 3
Four).

If it is determined in step 30 that the CPU 30 is executing the return execution instruction, the execution instruction being executed is deleted from the reverse execution instructions stored in the check register 40 in step 31 (step 35). The order of storing the reverse execution instruction being executed is searched (step 36), the reverse execution instruction being executed is stored in that order, and the process proceeds to step 33 (step 37).

FIG. 10 is a conceptual diagram in which the CPU 30 stores the execution instructions in the execution order in this way.

As shown in the figure, the check register 40 shows Y2 and Y4 stored in step 31. Then, in the portion surrounded by the one-dot chain line, the contents stored in the storage unit are conceptually shown by the flowchart for storing the execution instructions shown in FIG. 9 in the order of execution.

When the time chart creation device operates the work fixing device, the execution instruction Y1 causes the transition condition X2 to X1 of Y1.
It is remembered that the execution is up to
Is executing the transition condition X4 to X3 of Y3, and Y4 is X3
To X4 and Y2 from X1 to X2 are remembered to be running. And the interlock state shown by the arrow in the figure connects each execution instruction,
Remembered

In this way, the CPU 30 will store the order in which the execution instructions were executed.

Therefore, the CPU 30 stores the time that each execution instruction is executing and the order in which the execution instruction is executed, so that the CPU 30 can create the time chart shown in FIG. . Fig. 11 shows 10
9 is a time chart in which the elapsed time of each execution instruction (an example of the elapsed time shown in FIG. 8) is added to the conceptual diagram shown in FIG.
This time chart can be created on a display device such as an RT or a printer.

As described above, in the time chart creation device of the present invention,
Since the execution time of operating each operating member can be calculated from the storage of the start time and the end time of the operation, the start time and the end time of the operation of each operating member are stored, On the other hand, the operating order of each operating member is also stored.

Therefore, when creating a time chart, the time chart as shown in FIG. 11 can be created by performing the above-mentioned processing based on the data of the start time, the end time, and the operation order. Become. Since the number of data to be stored is the operating sequence of each operating member, the start time and the end time of the operation, it is clear that the number of data to be stored will be extremely small, and the time chart of the production device performing a complicated operation. Even if you create, you will not need much storage capacity.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the execution time storage means indicates the time during which the execution means operates the operation member and the order in which the execution means operates the operation member. And the execution order storage means are separately stored, and the time chart calculation means performs the calculation for creating the time chart based on the order and the time. Therefore, the order in which the operating members operate is determined by a predetermined rule. Even if a manual operation other than the above is performed, there is an effect that it is possible to create a time chart in which the operation sequence and time are accurately shown.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a time chart creation device according to the present invention, FIG. 2 is a schematic configuration diagram of a work fixing device incorporating the time chart creation device according to the present invention, and FIG.
An operation time chart of the work fixing device, FIG. 4 is a schematic configuration diagram of the time chart creating device according to the present invention, FIG. 5 is a processing conceptual diagram of the time chart creating device according to the present invention, and FIG. FIG. 7 is an operation flowchart of the time chart creating device according to the invention, FIG. 7 is an operation flowchart for storing the time until each transition condition of the time chart creating device according to the present invention is activated, and FIG. FIG. 9 is a diagram showing an example of each elapsed time, and FIG. 9 is a flowchart for storing execution instructions in the order of execution.
FIG. 11 is a conceptual diagram of a process of storing execution instructions in execution order, FIG. 11 is a time chart created by the time chart creating device according to the present invention, and FIG. 12 is a schematic configuration diagram of a conventional time chart creating device. 10 ... Execution means, 11 ... Execution time storage means, 12 ... Execution order storage means, 13 ... Time chart calculation means, 30 ...
CPU, 32 …… input section, 33 …… output section.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takayuki Kawakami 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Kei Shimizu 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. ( 72) Inventor Takatoshi Ito 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP 61-75406 (JP, A) JP 1-100603 (JP, A) 62-179608 (JP, U)

Claims (1)

[Claims] 1. Execution means for activating a plurality of operating members, such as cylinders and motors, according to a predetermined rule or manual input operation, and execution order storage means for storing the operating order of the plurality of operating members by the executing means. An execution time storage means for storing an operation time of each operation member by the execution means, an operation order of the plurality of operation members stored in the execution order storage means, and the execution time stored in the execution time storage means A time chart calculation device, comprising: a time chart calculation means for calculating the time charts of the plurality of operation members based on the operation time of each operation member.