KR100527656B1 - Generator of interlock signal for press machine and generating method - Google Patents

Abstract

A general purpose output signal that can be universally suited to the specifications of the peripheral device can be selectively set as an interlock signal and outputted.

A general-purpose output circuit 40 having a predetermined number of general-purpose output ports, first storage means 15 for storing names of a plurality of preselectable interlock signals, and one or more of the general-purpose output circuits 40 are usable in advance Second storage means 16 for storing an address of the general-purpose output port, and selecting one of the names of the stored plurality of interlock signals and correspondingly connecting the selected name and the stored address of the general-purpose output port. Setting input means 20 for inputting data so as to input data, universal output setting means 11 for storing data for each corresponding connection for each universal output port, and each of the above-mentioned The output timing of the interlock signal is provided with universal output control means 17 for controlling the corresponding universal output port.

Description

Interlock signal output device for press machine and its output method {GENERATOR OF INTERLOCK SIGNAL FOR PRESS MACHINE AND GENERATING METHOD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlock signal output device of a press machine. In particular, the present invention relates to an interlock signal such as various rotary cam command signals, operation mode signals, press status signals, and control command signals required for controlling peripheral devices. The present invention relates to an interlock signal output device of a press machine using a general-purpose output signal that can be selectively set and used according to a kind or specification of a peripheral device, and an output method thereof.

To control peripheral devices for loading, conveying and carrying out materials to the press machine, the press control device and the peripheral device interlock with each other based on the operation mode signal, the press status signal, and the start command or stop command signal of the press machine. It is necessary to take out. As shown in FIG. 10, in the conventional press control apparatus 1, the above various signals are taken out by the relay circuit 5, the rotary cam device 6, the sequencer 7, and the like and output to the peripheral device 50. .

When the user newly inserts the press machine, various signals from the relay circuit 5, the rotary cam device 6, and the sequencer 7 in the manufacturing plant are suitable for the type and specification of the peripheral device used by the user. Is taken out and wired in advance to a terminal block, a connector or the like, or the one designed the sequence software of the sequencer 7 is shipped. Therefore, the user side only needs to connect these previously prepared terminal blocks and connectors to the peripheral device 50 with the cables prepared in advance.

However, the following problem occurs with the conventional method of connecting an interlock signal as described above.

That is, when a user adds or changes a peripheral device after the user presses a press machine, the interlock signal required for control of this new peripheral device must be taken out and wired from the press control device 1. In this case, since the interlock signal required for control is often an important signal related to the safety of a press machine (not shown), it is recommended that the operator of the user side take out various signals and modify the wiring. Doing so can lead to serious accidents. Thus, such a retrofit is conventionally performed under the direction of the press shipping factory by a service technician having expertise in press control. For this reason, there is a problem that it takes a lot of time and money to renovate.

On the other hand, it is conceivable to prepare in advance all interlock signals in advance so as to conform to the functions and specifications of the various peripheral devices 50. However, depending on the specifications of the peripheral device 50, the functions of the interlock signals required for the control are considered. In many cases, the specifications are different, and therefore, extra terminal blocks, connectors, and wirings for signals that are not normally used must be prepared, which is expensive in terms of cost and cannot be said to be a practical method.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the interlock of a press machine capable of selectively setting as a interlock signal a universal output signal which can be universally suited to the specifications of a peripheral device, and outputting to a peripheral device It is an object to provide a signal output device and an output method thereof.

In order to achieve the above object, the invention described in claim 1 is an interlock of a press machine that outputs an interlock signal such as an operation mode signal, a press state signal, and a rotary cam signal for controlling synchronous operation with a peripheral device. In the signal output device,

A general purpose output circuit 40 having a predetermined number of general purpose output ports,

First storage means (15) for storing a name of each of a plurality of preselectable interlock signals;

Second storage means 16 for storing an address of at least one usable universal output port of the general purpose output circuit 40 in advance;

Select one of the names of the plurality of interlock signals stored in the first storage means 15, and select one of the selected name and the address of the general-purpose output port stored in the second storage means 16. Setting input means (20) for inputting setting data for corresponding connection;

Universal output setting means (11) for storing setting data for each corresponding connection inputted by the setting input means (20) for each universal output port;

During the press operation, on the basis of the corresponding connection relationship stored by the general purpose output setting means 11, at the output timing of each of the selected interlock signals, the general purpose of the address corresponding to each interlock signal of the general purpose output circuit 40 is A general purpose output control means 17 for controlling the output port is provided.

According to the invention as set forth in claim 1, any one of a plurality of selectable interlock signals stored in the first storage means is set arbitrarily so as to correspond to any one of the addresses of one or more usable universal output ports stored in advance. At the time of press operation, on the basis of this corresponding connection relationship, each general-purpose output is output at the output timing of the corresponding interlock signal. In this way, since the interlock signal required for the control of the peripheral device is arbitrarily selected to correspond to each universal output, the peripheral device is controlled by the universal output. Therefore, when a new peripheral device is added or changed, the relay circuit for the control and No modification of the sequencer's sequence software or the like is necessary. Therefore, it is possible to greatly reduce the time and cost for retrofit which has been necessary in the past. In addition, since the work error associated with the modification of the relay circuit and the sequence software is reduced, the starting operation after the modification can also be performed in a short time. In addition, as an interlock signal output circuit, it is unnecessary to design a separate (dedicated) output circuit (a combination of a relay circuit, a semiconductor output circuit, an output circuit with insulation function, etc.) according to a customer's requirements. Commonization becomes possible. As a result, productivity improvement on the manufacturer side, cost reduction, shortening of lead time, and stabilization of quality can be achieved.

The invention described in claim 2 makes it possible to increase or decrease the number of usable general-purpose output ports in the interlock signal output device of the press machine according to claim 1.

According to the invention described in claim 2, since the number of usable general purpose output ports can be increased or decreased, for example, by arbitrarily increasing or decreasing the number of output ports of the general purpose output circuit, Therefore, even if the number of required interlock signals is changed, it is possible to easily cope with it, and no large modification work is required. In addition, since the number of general purpose output ports can be reduced to the minimum required, and the interlock signals required for peripheral device control can be allocated and used, the resources of the control device (that is, general purpose output circuits) can be effectively utilized. Therefore, the output circuit of the interlock signal can be configured at minimum cost.

In the invention described in claim 3, in the interlock signal output device of the press machine according to claim 1, the setting input means 20 has a graphic display.

According to the invention as set forth in claim 3, the menu of the operation command is possible by displaying a function and a command necessary for various data setting, operation of each command input and the like by using the graphic screen display. can do. Therefore, operation becomes easy and operation error is reduced. In addition, in order to correspondly connect the general purpose output and the interlock signal, a general purpose output port having an arbitrary address is selected from a predetermined number of general purpose output ports, and a plurality of interlock signals corresponding to the general purpose output port are selected, or Complex and advanced operations such as inputting names of selected interlock signals, function setting data, and the like are required. By setting and inputting the graphic screen display in combination with the present invention, these operations can be performed in a short time.

In the invention according to claim 4, in the interlock signal output method of a press machine for outputting interlock signals such as an operation mode signal, a press state signal, and a rotary cam signal for controlling synchronous operation with a peripheral device,

A first storage step of storing names of a plurality of preselectable interlock signals, a second storage step of storing addresses of at least one usable universal output port among a predetermined number of general-purpose output ports prepared in advance;

Select one of the names of the plurality of interlock signals stored in the first storage step, and set to correspond to the selected name and one of the addresses of the general-purpose output port stored in the second storage step. To do that,

Storing each of the corresponding connection relations set for each general-purpose output port, and at the time of output timing of each of the selected interlock signals based on the corresponding connection relations stored for each general-purpose output port during press operation. The method has a step of controlling the general-purpose output port of the address corresponding to the lock signal.

According to the invention as set forth in claim 4, any one of a plurality of selectable interlock signals memorized in the first storage step corresponds to any one of the addresses of one or more usable universal output ports memorized in the second step in advance. It can be set arbitrarily so as to connect, and at the time of press operation, it outputs each general-purpose output by the output timing of a corresponding interlock signal based on this correspondence connection relationship. In this way, since the interlock signal necessary for the control of the peripheral device is arbitrarily selected and the peripheral device is controlled by the general purpose output in correspondence with each general purpose output, a relay circuit for the control when a new peripheral device is added or changed. And modification work of sequencer sequence software is unnecessary. Therefore, the time and cost for retrofit which were conventionally required can be reduced significantly. In addition, since the work error associated with the modification of the relay circuit and the sequence software is reduced, the starting operation after the modification is also possible in a short time. In addition, as an output circuit for an interlock signal, a separate (dedicated) output circuit (a combination of a relay circuit, a semiconductor output circuit, an output circuit with an insulation function, etc.) according to the customer's requirements is unnecessary, and the output circuit is common. Becomes possible. This makes it possible to improve productivity on the manufacturer side, reduce costs, shorten lead times, or stabilize quality.

EMBODIMENT OF THE INVENTION Below, embodiment of the interlock signal output apparatus of the press machine which concerns on this invention is described in detail with reference to FIGS.

1 is a functional block diagram for explaining the basic functions of the present invention.

The press control device 1 controls the operation of a press machine (not shown) and controls the interlock operation in synchronization with the peripheral device 50. The peripheral apparatus 50 interlocks with the press control apparatus 1 while carrying in a raw material to a press machine, conveying or unloading a workpiece | work. The press control device 1 and the peripheral device 50 transmit and receive various interlock signals to each other, and the interlock signal output is then performed in the press control device 1 in charge of the output control of the interlock signal according to the present invention. It is called the device 1a.

The interlock signal output device 1a largely includes a general-purpose output selection item storage unit 2, a general-purpose output setting / executing unit 3, and a general-purpose output unit 4. As shown in FIG. Hereinafter, the outline function of each part is demonstrated.

The general purpose output section 4 is a circuit section for outputting a general purpose output signal usable as an interlock signal with the peripheral device 50. This general-purpose output signal does not have only one function dedicated to each signal, but a plurality of interlock signals such as predetermined press operation mode signals, press status signals, rotary cam signals, and control command signals that are prepared in advance. It can be selectively used, and can be used as an arbitrary output signal universally. The address (corresponding to the universal output number) of an output port (corresponding to a specific output circuit) that can be used as a general purpose output signal is set in advance.

As the press operation mode signal, there are respective mode signals such as data setting, mold setup, safe travel, micro movement, continuous operation, and the like. As the press state signal, operation ready, operation, emergency stop, abnormal stop, And continuous stop, and the like, and control command signals include, for example, a transmission start timing signal, a material release signal, a production count signal, and the like, to the material loading device. The rotary cam signal is an output timing signal that can be turned on or off at a predetermined timing in synchronization with the slide operation of the press machine. In the case of a mechanical press, the rotary cam signal operates in synchronization with the crank angle of the slide (the so-called press angle). In the case of a linear press such as a hydraulic press or an electric servo press, it is set in advance to operate in a combination of a predetermined position range in the up / down stroke stroke of the slide and a predetermined time range during the stop stroke.

The general purpose output selection item storage unit 2 previously stores names and functions of a plurality of interlock signals that can be selected as the general purpose output signal. The items to be stored can be changed, added, deleted, etc. by a predetermined setting method.

Further, the general purpose output setting / executing unit 3 selects any one of the names and functions of the plurality of interlock signals stored in the general purpose output selection item storage unit 2, and applies the selected name and function to the general purpose. The setting can be made to correspond to any one of a plurality of general-purpose output signals prepared in advance in the output unit 4. In addition, at the time of press operation, the output is turned on or off in accordance with the function of the set general-purpose output signal. When the name itself of the interlock signal includes all of its functions, only the name may be stored and selected.

2 is a block diagram of the hardware configuration of the above-described interlock signal output device. In the same figure, the setting input means 20 has a setting function in the above-mentioned general purpose output setting / executing section 3, and selects an arbitrary signal from various interlock signals or applies a general purpose output signal corresponding to the selected signal. Can be set. The setting input means 20 may have only various setting switches, for example, or may have these various setting switches and the indicator for making the operation at the time of setting easy. The selection signal and the setting signal are input to the general purpose output controller 10 described later.

The display means 30 displays various internal information, operation information, messages, and the like of the press control device 1 based on the display command from the general purpose output controller 10. In addition to this display, the display means 30 is an indicator of the setting input means 20 described above, and information or messages necessary for the setting operation, that is, the name of each selectable interlock signal, the usable universal output number ( Corresponding to the address of the general-purpose output port), or various setting data such as function setting data of the interlock signal, and guidance and menu commands. The display means 30 has, for example, a graphic display such as a liquid crystal display or a plasma display, or a character display by an LED (light emitting diode) or the like.

The general purpose output controller 10 has an execution function in the general purpose output setting / executing section 3. That is, the general purpose output controller 10 mainly comprises a computer device such as a microcomputer, and has a storage device of a predetermined capacity capable of recording and reading. In this storage device, data for selecting items (name, etc.) of the above-mentioned various selectable interlock signals, data of names or numbers of usable general-purpose output signals, and the like are stored. The general purpose output controller 10 performs predetermined calculations and determination processing described later on the basis of the input signal from the setting input means 20, creates a corresponding table between each general purpose output signal and each interlock signal, and stores the above-described storage. Store in the device. During the press operation, with reference to this correspondence table, a command for turning on or off a predetermined general purpose output signal is output to the general purpose output circuit 40 while monitoring the press operation state and synchronizing with the slide operation.

The general purpose output circuit 40 constitutes the above general purpose output section 4, and consists of an output circuit having an output port corresponding to each general purpose output signal. As the form of this output circuit, for example, a relay contact output, a semiconductor output (open-collector output, etc.), an isolation output having an electrical insulation function, or the like can be formed in combination. The number of output ports can be increased or decreased in accordance with the specification of the peripheral device, and an address (corresponding to a universal output number) is assigned to each general purpose output port. In addition, the address of the usable universal output port, the type of circuit type thereof, and the total number of outputs can be arbitrarily set in advance.

3 is a functional block diagram of an interlock signal output apparatus according to the present invention, and will be described in detail for each function according to the same drawing.

The setting input means 20 outputs the selection signal or the setting signal related to the setting of the general-purpose output function to the general-purpose output setting means 11. The first storage means 15 stores in advance the names and functions of various interlock signals that can be selected as general purpose outputs, and the second storage means 16 is an output port usable as a general purpose output in the general purpose output circuit 40. Address is stored in advance.

The universal output setting means 11 is based on the input signal from the setting input means 20, and the name and function of the interlock signal stored in the first storage means 15, and the second storage means 16. The correspondence table between the interlock signal selected by the selection signal and the address of the general purpose output port set by the setting signal is created by referring to the address of the general purpose output port stored in the above. Moreover, the general purpose output setting means 11 outputs a display command of various setting data during the setting processing to the display means 30 in order to display the setting state during this setting processing.

During the press operation, the general purpose output control means 17 monitors the press operation state and the slide operation position, etc. while referring to the correspondence table created by the general purpose output setting means 11, and turns on each of the set universal output ports. Alternatively, the timing to turn off is determined, and the on command or the off command is output to the general purpose output circuit 40 in accordance with this determination.

The general purpose output circuit 40 drives each general purpose output port on / off in accordance with this on command or off command.

4 is an operation panel diagram related to the interlock signal output device of the present invention, and the setting input means 20 and the display means 30 will be described in detail based on the same drawing.

The operation panel P includes various switches for operating in response to various operation operation modes such as data setting, mold setup, production, and maintenance of the press machine, and press operation states and various information in each operation operation mode. A display unit for displaying data is provided. That is, the display means 30 is formed in the substantially center part of the operation panel P, and the setting input means 20 is formed below it.

As the display means 30, in the present embodiment, a graphic display 31 with a transparent touch key having a plurality of transparent touch keys assigned to the predetermined area on the front of the display screen is used. The graphic display 31 not only displays the setting state and data at the time of setting the general-purpose output function, but also displays monitor information and data necessary for operation in each press operation mode. Further, at the bottom of the graphic display 31, an operation command key section 24 for setting various data is formed, and the operation command key section 24 displays the names of the respective operation command keys and corresponds to this display. Each operation command is input by operation of the transparent touch key.

In the lower portion of the operation panel P, a power key switch 26 for turning on or off the operation power and a data setting key switch 21 for switching to a data setting mode for setting various data are arranged. Further, immediately below the graphic display 31, a cursor movement switch 22 for moving the cursor displayed on the screen of the graphic display 31 and a turn key for inputting mathematical data in order to set various types of data. The part 23 is provided. In the present embodiment, setting input means (not shown) is provided by these data setting key switches 21, cursor movement switches 22, turn key portions 23, operation command key portions 24, and graphic display 31. 20) is configured.

Next, an example of the setting operation flowchart of the general-purpose output which concerns on this invention is shown in FIG. 5, and a setting procedure is demonstrated according to the same figure. Each step number is marked with an S.

First, when the operation power is turned on by the power key switch 26, a production mode initial screen (not shown) is set on the screen of the graphic display 31. At this time, the data setting key switch 21 is turned ON (S1). As a result, the initial screen of data setting shown in FIG. 6 is displayed on the screen. Subsequently, when the timing setting K1 displayed on the lower operation command key part 24 is pressed on this initial screen (S2), the screen display becomes the rotary cam setting screen shown in FIG. After that, when the rotary cam key K2 displayed on the operation command key part 24 is pressed, the name display of the location corresponding to the first general-purpose output signal (hereinafter referred to as general-purpose output 1) (D1) (here, RCLS 1 is displayed) ) Is displayed in reverse, and then the rotary cam signal can be set (S3). When `` RCLS 1 '' is inverted, the rotary cam signal (RCLS 1) can be set. At this time, the rotary cam output can be turned off or on each time the "on / off" key (K3) is pressed. By using the turn key (numeric keys) of the turn key section 23, input angle data of the output angle (output angle range set in the above-described OFF or ON) and true angle can be inputted, and by the ENT key Confirm the setpoint data (S4). Thereby, the general-purpose output 1 is set to correspond to the rotary cam signal RCLS 1, and then "RCLS 2" is inverted and the rotary cam signal RCLS 2 can be set. Thereafter, the rotary cam signal may be sequentially set in the same manner.

Subsequently, if the name key K4 of the rotary cam setting screen shown in FIG. 7 is pressed (S5), the screen becomes the rotary cam name registration screen shown in FIG. In this Rotary cam name registration screen, the name of each Rotary cam signal can be registered, and as described above, a signal can be selected from a predetermined interlock signal set as a selectable signal so as to correspond to a universal output signal. have.

Subsequently, it is determined whether the current rotary cam output is being set (S6). When the rotary cam output is being set, the name of each rotary cam signal is input (S7). Here, to input the name of each Rotary cam signal, move the cursor by the cursor movement switch 22, and display the English characters, numbers, Korean characters (Kodak, etc.) and characters displayed on the character display section 32 of the Rotary cam name registration screen. The cursor position is selected to match any one of characters such as various symbols, and the selected character is displayed at the position of the name using the ENT key. Then, by pressing the registration key K5, the name at that time is registered. After that, the screen becomes the Rotary cam setting screen, and the process returns to S3 and the above process is repeated.

When the rotary cam output is not set in step S6, it is determined that the general purpose output is selected and set, and the selection key (K6) and the registration key (K5) on the rotary cam name registration screen shown in FIG. The selection and setting operation is performed (S8). That is, each time the selection key K6 is pressed, the various interlock signals of the interlock signal display unit 33 displayed on the lower center of the rotary cam name registration screen (off, fine shift, and idle in FIG. A), continuous, etc.) is inverted in sequence, and by pressing the registration key K5, the inverted interlock signal is displayed corresponding to the general purpose output. For example, when the name key K4 is pressed in S5 (see FIG. 7), when "RCLS 1" of the name is displayed in reverse, and "Ready" in the interlock signal display section 33 is displayed in reverse, the registration key When (K5) is pressed, the general purpose output 1 is set as a ready signal as shown in FIG.

By the above settings, the address of each set universal output port is set to the rotary cam signal, the press operation mode signal (smile, idle, continuous, etc.) and the operation status signal (ready, abnormal, C / B (clutch / brake) ON). Etc.) or peripheral command signals (transmission timing, release, etc.) and the like are stored as correspondence tables. During the press operation, on or off of the general-purpose output corresponding to each is controlled based on the output timing of turning on or off the respective interlock signals.

As described above, among the various interlock signals stored in advance, an interlock signal necessary for synchronous control with a peripheral device is selected, and the selected interlock signal is corresponded to a target general purpose output. I can do it. Therefore, even if the peripheral device is changed or added after the press machine is delivered to the user, a new relay circuit or a rotary cam signal is added for synchronous control of the new peripheral device as in the prior art, or the sequence software of the sequencer is changed. Therefore, it is not necessary to greatly improve the press control device 1, and the time and cost required for this improvement work can be greatly reduced. Moreover, since the work miss which occurs at the time of retrofitting is also eliminated, the time required for starting the press machine after the retrofitting work can be shortened.

In addition, it is no longer necessary to produce a dedicated relay circuit or sequence software for each press machine to meet the user's requirements, so that the output circuit of the interlock signal necessary for the synchronous control with various peripheral devices is commonized and standardized. Standard relay circuits or sequence software can be built within. As a result, the manufacturing time related to the interlock signal output circuit can be shortened, the manufacturing cost can be reduced, the manufacturing lead time can be shortened, and the manufacturing miss can be reduced.

1 is an explanatory diagram of the basic functions of the present invention.

2 is a hardware block diagram of an interlock signal output apparatus according to the present invention.

3 is a functional block diagram of an interlock signal output apparatus according to the present invention.

4 is an operation panel diagram related to the interlock signal output device of the present invention.

5 is a flowchart for setting a general-purpose output according to the present invention.

6 is an example of an initial screen of data setting according to the present invention.

7 is an example of a rotary cam setting screen according to the present invention.

8 is an example of a Rotary cam name registration screen according to the present invention.

9 is another display example of the rotary cam setting screen according to the present invention.

10 is an explanatory diagram of an interlock signal of a press control device according to the prior art.

* Description of the symbols for the main parts of the drawings *

1: press control device, 1a: interlock signal output device,

2: general purpose output selection memory, 3: general purpose output setting / execution unit,

4: general purpose output, 5: relay circuit,

6: rotary cam device, 7: sequencer,

10: general purpose output controller, 11: general purpose output setting means,

15: first storage means, 16: second storage means,

17: general purpose output control means, 20: setting input means,

21: data set key switch, 22: cursor movement switch,

23: turn key part, 24: operation command key part,

30: display means, 31: graphic indicator,

40: general purpose output circuit, 50: peripheral device.

Claims (4)

In an interlock signal output device of a press machine for outputting interlock signals such as operation mode signals, press status signals, and rotary cam signals for controlling synchronous operation with peripheral devices, A general purpose output circuit 40 having a predetermined number of general purpose output ports, First storage means 15 for storing names of the plurality of selectable interlock signals in advance; Second storage means 16 for storing in advance an address of at least one usable universal output port of the general purpose output circuit 40; Select one of the names of the plurality of interlock signals stored in the first storage means 15, and select one of the selected name and the address of the general-purpose output port stored in the second storage means 16. Setting input means (20) for inputting setting data for corresponding connection; Universal output setting means (11) for storing setting data for each corresponding connection inputted by the setting input means (20) for each universal output port; During the press operation, on the basis of the corresponding connection relationship stored by the general purpose output setting means 11, at the output timing of each selected interlock signal, the general purpose of the address corresponding to each interlock signal of the general purpose output circuit 40 is An interlock signal output device for a press machine, comprising: a universal output control means (17) for controlling the output port. The interlock signal output device of a press machine according to claim 1, wherein the number of usable universal output ports can be increased or decreased. An interlock signal outputting apparatus according to claim 1, wherein said setting input means (20) has a graphic display. In the interlock signal output method of a press machine for outputting interlock signals such as operation mode signals, press status signals, and rotary cam signals for controlling synchronous operation with peripheral devices, A first storage step of storing names of the plurality of selectable interlock signals in advance; A second storage step of storing an address of at least one usable universal output port among a predetermined number of general purpose output ports prepared in advance; Select one of the names of the plurality of interlock signals stored in the first storage step, and set to associate the selected name with one of the addresses of the general-purpose output port stored in the second storage step. To do that, Storing each corresponding connection relationship for each general purpose output port; Controlling a universal output port of an address corresponding to each interlock signal at the output timing of each selected interlock signal based on a corresponding connection relationship stored for each general purpose output port during a press operation. Interlock signal output method of press machine.