JP2007140937A - Control panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safe control panel of an industrial instrument capable of responding to differences in operations methods and change in production lines. <P>SOLUTION: Shorting plugs 50A, 50B and 50C are connected to a specification switching connector 36 for selection of desired operation patterns so that the control panel 20 implements operations of desired patterns, thereby giving versatility to the control panel 20. Particularly, the operation patterns A, B, and C correspond to the shorting plug 50A, 50B, and 50C on one-on-one basis, and the desired operation pattern can be selected by connecting the shorting plug of the desired operation pattern to the specification switching connector 36. There is no possibility of the wrong operation pattern being selected, thereby increasing safety. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a control panel for controlling operations of industrial equipment such as machine tools and robots.

The machine tool includes a spindle device for machining the tool, an X, Y, Z drive device for moving the workpiece relative to the tool, a jig device for detachably fixing the workpiece, and a workpiece. Generally, it is comprised from the conveying apparatus etc. for conveying. In the control panel for controlling each of these devices, the servo amplifiers for driving the servo motors of the machine tools have different installation quantities depending on the capacity and the installation quantity of the servo motors.

In addition, even if the machine capacity of the servo motor and the number of attachments are the same specifications, when operating the machine tool alone and when operating in a state where the production system line is configured by arranging multiple machines, The operation method of the machine tool is different. For this reason, the configuration of the sequence circuit, relay circuit, input / output circuit, etc. will be different, and the configuration of the control circuit will be different accordingly, and a single control panel will be individually produced for each operation mode of the machine tool. It was.

For this reason, there are many changes to the control panel when the machine tool is moved to another location on the same production line or moved to a different production line due to differences in operation methods or production line changes. The work was difficult.

Similarly, due to a change in the number of production, equipment that is increased in production may be converted from a manual work line to an automated line, and equipment that is reduced in production may be modified from an automated line to a manual work line. In the manual work line, an automatic door that is not necessary in the automated line and that prevents the user from entering a hand during a predetermined work, and a light curtain (optical sensor) to detect the hand, etc., increase the safety of the worker. Provided on machine tools. On the other hand, the automation line synchronizes the host controller and the operation preparation circuit, which is not necessary in the manual work line, and a conveyance control circuit for controlling the conveyance of the workpiece is provided in the control panel. For this reason, when switching between the automation line and the manual work line, the above-described difficult control panel change is required.

Furthermore, when a manufacturer manufactures a machine tool in advance, there is a problem that the control panel cannot be manufactured before the automation specification of the customer's production line is determined, leading to an increase in lead time. Here, the prior art which can switch the operation form of a control panel is disclosed in Patent Document 1.
JP 2003-263204 A

However, in the above prior art, since the operation mode of the machine tool is switched by connecting a connector to a plurality of connecting portions, the possibility that the connector is connected to an incorrect connecting portion is denied. I didn't get it. Further, there is a possibility that the control circuit corresponding to the selected operation form and the control program do not match.

The present invention has been made to solve the above-described problems, and the object of the present invention is to easily cope with a difference in operation method and a change in production line, and a highly safe control panel for industrial equipment. Is to provide.

In order to achieve the above object, the invention of claim 1 is a control panel 20 comprising a plurality of control circuits 26a, 26b, 26c, 28a, 28b, 28c for controlling the industrial equipment 10.
Among the plurality of control circuits 26a, 26b, 26c, 28a, 28b, 28c, the control circuits 26a, 26b, 26c, 28a, 28b, 28c corresponding to selectable operation modes A, B, C are selected. A single receptor 36 with terminals 38;
A jumper wire 52 for short-circuiting the specific terminal 38, and short-circuit plugs 50A, 50B, 50C provided for each type corresponding to the selectable operation modes A, B, C.
By connecting the short-circuit plugs 50A, 50B, and 50C for selecting a desired operation mode to the receptor 36, control circuits 26a, 26b, 26c, 28a, 28b, and 28c corresponding to the desired operation mode can be obtained. It is a technical feature that it is selected.

According to the first aspect of the present invention, by connecting the short-circuit plugs 50A, 50B, and 50C for selecting the desired operation modes A, B, and C to the receptor 36, the control panel 20 can have a desired operation mode. Therefore, the control panel 20 of the industrial equipment 10 such as a machine tool or a robot can be versatile. That is, the operation mode when the machine tool 10 in the manual work line is automatically operated in accordance with the increase in the production amount, or on the contrary, the machine tool 10 in the automatic line is manually operated in accordance with the reduction in the production amount. Can be easily changed. In addition, if the machine tool or robot is moved to a different location on the same production line or moved to a different production line due to production line operation changes, etc., the required operation mode of the machine tool or robot will be changed. Accordingly, the specification of the control panel 20 can be easily changed by selecting the specific control circuits 26a, 26b, 26c, 28a, 28b, 28c by the short-circuit plugs 50A, 50B, 50C. At this time, it is not necessary to change the control circuits 26a, 26b, 26c, 28a, 28b, 28c of the control panel 20.

In particular, the plurality of operation modes and the short-circuit plugs 50A, 50B, and 50C have a one-to-one correspondence, and the operation mode is selected by connecting the short-circuit plugs 50A, 50B, and 50C having the desired operation mode to the receptor 36. For this reason, there is no mistake in the operation mode to be selected, and safety can be improved. For example, by connecting the short-circuit plug 50A for the manual work line to the receptor 36, the industrial device 10 can be switched to the manual work line without fail, so that the operation mode is not selected by mistake.

According to the invention of claim 2, the control circuit 26a, 26b, 26c, 28a, 28b, 28c corresponding to the desired operation mode is selected by the short-circuit plugs 50A, 50B, 50C, and at the same time, the desired operation mode. A sequence program corresponding to the above is selected. Therefore, the switching of the sequence program (software) can be completed simultaneously with the switching of the control circuit (hardware).

According to the invention of claim 3, the selection of the control circuits 26a, 26b, 26c, 28a, 28b, 28c by the short-circuit plugs 50A, 50B, 50C and the selection of the sequence program according to the desired operation mode, That is, the selection of the control circuits 26a, 26b, 26c, 28a, 28b, 28c and the selection of the sequence program corresponding to the operation mode of the selected control circuits 26a, 26b, 26c, 28a, 28b, 28c are matched. Since the operation of the industrial device is enabled only when it is confirmed and matched, the mismatch between the hardware and software does not occur, and the industrial device can be operated safely.

Hereinafter, an embodiment in which a control panel for industrial equipment according to the present invention is applied to a control panel for a machine tool will be described with reference to the drawings.
FIG. 1A shows a state where the machine tool 10 is placed on a manual work line, and FIG. 1B shows a state where the machine tool 10 is placed on an automatic line.
In the manual operation line shown in FIG. 1A, the machine tool 10 is provided between the manual conveyance lines 16i and 16o. An automatic door 12i is provided in the workpiece input portion of the machine tool 10 to prevent an operator's hand from entering during workpiece processing. A light curtain 14i is provided in front of the automatic door 12i, and is controlled to stop the machine tool 10 when the operator's hand is detected. Similarly, an automatic door 12o and a light curtain 14o are provided in the workpiece take-out portion of the machine tool 10. Furthermore, various safety devices for ensuring the safety of workers not shown are provided. The machine tool 10 is controlled by the control panel 20 together with the automatic doors 12i and 12o, the light curtains 14i and 14o, and the safety device.

On the other hand, in the automatic line shown in FIG. 1B, automatic conveyance path lines 18i and 18o are connected. On the other hand, since no worker is present, automatic doors 12i and 12o and light curtains 14i and 14o for ensuring safety of the worker are not provided. However, the control panel of the machine tool on the upstream side and the operation preparation circuit are synchronized, and the conveyance control for controlling the loading of the workpiece by the automatic conveyance path line 18i, the unloading of the processed workpiece by the automatic conveyance path line 18o, etc. Various controls necessary for the line automation are controlled by the same control panel 20 when the manual operation line described above with reference to FIG.

FIG. 2 is a front view showing the internal configuration of the control panel shown in FIG. An NC unit 22 is detachably attached to the control panel 20. The NC unit 22 includes a programmable controller 24 that stores a sequence circuit for determining various operation modes as software. In addition, a plurality of relay circuits 26a, 26b, 26c and safety relay units 28a, 28b, 28c as control circuits for realizing various operation modes are assembled. Here, the safety relay units 28a, 28b, and 28c mainly perform various operations for ensuring work safety. An input / output unit 30 is provided below the safety relay units 28a, 28b, and 28c. Furthermore, the control panel 20 is provided with a plurality of relay circuits 26a, 26b, 26c, and an electromagnetic contactor 32 and an electromagnetic switch 34 for switching the safety relay units 28a, 28b, 28c. Below the electromagnetic switch 34, a specification switching connector (receptor) 36 for changing the operation specifications of the machine tool is provided.

3 is an explanatory diagram for explaining switching of hardware on the control panel 20, FIG. 4 is an explanatory diagram for explaining switching of software on the control panel 20, and FIG. It is a connection diagram of a specification switching connector (receptor) 36 and shorting plugs 50A, 50B, 50C. FIG. 6 is an explanatory diagram for explaining selection of the relay circuit 26a and the safety relay units 28a and 28b.

In the present embodiment, three operation modes are set by the short-circuit plugs 50A, 50B, and 50C attached to the specification switching connector (receptor) 36. When the operation mode A is set, the workpiece is manually attached to and removed from the machining position by the operator, and the machine tool with the manual operation line specification has an operation mode in which the machine tool performs one cycle operation and stops in accordance with the operation of the start button. It becomes the control configuration of the machine. When setting the operation mode B, the work is attached to the machining position by the operator, the machine tool is operated for one cycle in accordance with the operation of the start button, stops, and then the work is delivered by the dispensing device. It becomes a specification. When the operation mode C is set, the workpiece is transferred by an automatic transfer device between machine tools of the production system, and each machine tool has an automatic line specification in which the cycle operation is continuously performed in accordance with the operation of the start button.

That is, as shown in FIG. 3, when the short-circuit plug 50A is attached to the specification switching connector 36, a relay circuit and a safety relay unit for setting the operation mode A are selected. Similarly, when the short-circuit plug 50B is attached to the specification switching connector 36, a relay circuit and a safety relay unit for setting the operation mode B are selected, and when the short-circuit plug 50C is attached to the specification switching connector 36, the above operation is performed. The relay circuit and safety relay unit for setting form C are selected.

A specific example of switching hardware will be described. As shown in FIG. 5, the specification switching connector 36 is provided with terminals (connector pins) 38 connected to the wiring from the hardware control circuit 40 side. On the other hand, jumper wires 52 for short-circuiting predetermined terminals 38 are provided in the short-circuit plugs 50A, 50B, and 50C. Here, the relay circuit 26a shown in FIG. 6A constitutes a control circuit for controlling the automatic door 12i of the machine tool 10 described above with reference to FIG. No. 7 terminal and no. When the 8 terminals are short-circuited, 7 terminal-No. It is set not to operate when the shorting plug 50C including the jumper wire 52 that short-circuits the eight terminals is connected, and is set to operate when the shorting plug 50A or 50B is connected.

On the other hand, the safety relay unit 28a shown in FIG. 6 (B) works when the operator's hand is detected by the light curtain 14i on the input side of the machine tool 10 described above with reference to FIG. 1 (A). The operation of stopping the cutting with the machine 10 is performed. The safety relay unit 28a is No. 11 terminal and no. The operation is selected by opening 10 terminals. On the other hand, when the operator's hand is detected by the light curtain 14 o on the carry-out side of the machine tool 10, the safety relay unit 28 b performs an operation of stopping cutting in the machine tool 10. The safety relay unit 28b is No. 10 terminals and no. The operation is selected by opening 9 terminals. And No. 9 terminal and No. The safety relay units 28a and 28b are selected so as not to operate due to a short circuit of the 11 terminals.

Here, when the shorting plug 50A is connected, no. 9 terminal-No. 11 terminal is opened by the short-circuit plug 50A, the operation of the safety relay units 28a and 28b is selected, and the operator's hand is detected by the light curtain 14i on the input side or the light curtain 14o on the carry-out side. An operation for stopping cutting by the machine 10 is performed. On the other hand, when the shorting plug 50B is connected, no. 9 terminal-No. No. 10 terminal is short-circuited by the jumper wire 52 of the short-circuit plug 50B. 10 terminal-No. Since the terminal 11 is opened, the operation of the safety relay unit 28a is selected, and when the operator's hand is detected by the light curtain 14i on the closing side, the operation of stopping the cutting with the machine tool 10 is performed. When the shorting plug 50C is connected, the light curtain is set not to operate. Although only the relay circuit 26a and the safety relay units 28a and 28b have been described here, a plurality of relay circuits and safety relay units corresponding to the above-described operation modes A, B, and C are selected.

Next, software switching will be described with reference to FIGS.
The short-circuit plug 50A is the No. of the specification switching connector 36. 21 terminal-No. A jumper wire 52 for short-circuiting 22 terminals is provided. Here, the shorting plug 50A is attached to the specification switching connector 36, and the control circuit (hardware) is set to No. for setting the operation mode A (Aspec.). 21 terminal-No. The contact A of the comparison circuit 24a of the programmable controller 24 is turned on by the short circuit of the 22 terminals. Further, by the parameter setting in the sequencer of the programmable controller 24, the contact a of the comparison circuit 24b is turned on corresponding to the parameter setting “1” of the operation mode A (Aspec.). Then, the sequence program for the operation mode A (Aspec.) Is selected according to the ON state of the contact A of the comparison circuit 24a and the contact a of the comparison circuit 24b. That is, the sequence program corresponding to the operation mode A as the operation mode is the No. of the specification switching connector (receptor) 36 by the short-circuit plug 50A. 21 terminal-No. It is selected by short-circuiting 22 terminals. Further, the short-circuit plug 50A and the parameter setting in the sequencer can confirm the coincidence between the operation form of the control circuit and the operation form of the sequence program, and the machine tool 10 can be operated only when they coincide.

Similarly, the short-circuit plug 50B has a No. of the specification switching connector 36. 21 terminal-No. A jumper wire 52 for short-circuiting the 23 terminals is provided. Here, the short-circuit plug 50B is attached to the specification switching connector 36, and 21 terminal-No. When the terminal 23 is short-circuited, the contact B of the comparison circuit 24a of the programmable controller 24 is turned on. Further, the parameter b in the sequencer of the programmable controller 24 sets the contact b of the comparison circuit 24b to the ON state. Then, the sequence program for the operation mode B (Bspec.) Is selected according to the ON state of the contact B of the comparison circuit 24a and the contact b of the comparison circuit 24b, thereby enabling the operation of the machine tool 10, that is, the operation of the operation mode B. To do.

The short-circuit plug 50C is the No. of the specification switching connector 36. 21 terminal-No. A jumper wire 52 for short-circuiting the 24 terminals is provided. Here, when the short-circuit plug 50C is attached to the specification switching connector 36, the contact C corresponding to the operation mode C corresponding to the short-circuit plug 50C is turned on by the comparison circuit 24a of the programmable controller 24. And the programmable controller 24 selects the sequence program corresponding to the driving | operation form C by comparison circuit 24a, 24b similarly to the above-mentioned driving | running modes A and B, and enables operation | movement of the driving | operation form C of the machine tool 10. FIG.
In the present embodiment, the comparison circuit 24a and the comparison circuit 24b are also sequence programs, and the contacts of the sequence program can be short-circuited by short-circuiting the short-circuit plugs 50A, 50B, and 50C.

According to the present embodiment, the selection of the control circuit (relay circuit 26, safety relay unit 28) by the short-circuit plugs 50A, 50B, and 50C coincides with the selection of the sequence program according to the operation mode of the selected control circuit. Since the machine tool 10 can be operated only when they are matched, the machine tool 10 can be operated safely without causing a mismatch between hardware and software.

According to the present embodiment, by connecting the short-circuit plugs 50A, 50B, and 50C for selecting a desired operation form to the specification switching connector 36, the control board 20 can perform the desired operation form. Can have versatility. That is, the operation mode when the machine tool 10 in the manual work line is automatically operated in accordance with the increase in the production amount, or on the contrary, the machine tool 10 in the automatic line is manually operated in accordance with the reduction in the production amount. Can be easily changed. In addition, when the machine tool 10 is moved to another location on the same production line or moved to a different production line due to a change in operation of the production line, etc., depending on the required operation mode of the machine tool 10. By selecting a specific control circuit (relay circuit 26, safety relay unit 28) using the short-circuit plugs 50A, 50B, 50C, the specifications of the control panel can be easily changed. At this time, there is no need to change the control circuit of the control panel.

In particular, the operation modes A, B, C and the short-circuit plugs 50A, 50B, 50C have a one-to-one correspondence, and the operation can be performed by connecting the short-circuit plugs 50A, 50B, 50C of the desired operation mode to the specification switching connector 36. Select the form. For this reason, there is no mistake in the operation mode to be selected, and safety can be improved. For example, by connecting the short-circuit plug 50A for manual use to the specification switching connector 36, the machine tool 10 can be reliably switched to the manual work line, so that the operation mode is not selected by mistake.

The short-circuit plugs 50A, 50B, and 50C select a control circuit corresponding to the operation modes A, B, and C, and simultaneously select a sequence program corresponding to the desired operation mode. Therefore, the switching of the sequence program (software) can be completed simultaneously with the switching of the control circuit (hardware).

In the above-described embodiment, an example in which the control panel of the present invention is applied to a machine tool has been described. However, it is needless to say that the present invention is not limited to a machine tool and can be applied to various industrial devices such as robots. .

FIG. 1A is an explanatory view showing a state where the machine tool is placed on a manual work line, and FIG. 1B is an explanatory view showing a state where the machine tool is placed on an automatic line. It is a front view which shows the internal structure of the control panel shown in FIG. It is explanatory drawing for demonstrating the switching of the hardware in a control panel. It is explanatory drawing for demonstrating switching of the software in a control panel. It is a connection diagram of a specification switching connector (receptor) and a short-circuit plug. It is explanatory drawing for demonstrating selection of a relay circuit and a safety relay unit.

Explanation of symbols

10 Machine tools 12i, 12o Automatic doors 14i, 14o Light curtain 20 Control panel 22 NC section 24 PLC
26a, 26b, 26c Relay circuit 28a, 28b, 28c Safety relay unit 36 Specification switching connector (receptor)
38 Terminal 50A, 50B, 50C Shorting plug 52 Jumper wire

Claims (3)

In a control panel comprising a plurality of control circuits for controlling industrial equipment,
A single receptor having a terminal for selecting a control circuit corresponding to a selectable operation mode from among the plurality of control circuits;
A jumper wire for short-circuiting the specific terminal, and a short-circuit plug provided for each type corresponding to the selectable operation mode,
A control panel according to claim 1, wherein a control circuit corresponding to the desired operation mode is selected by connecting the shorting plug for selecting a desired operation mode to the receptor. Each has a sequence program corresponding to the selectable operation mode,
2. The control panel according to claim 1, wherein a sequence program corresponding to the desired operation mode is selected by short-circuiting a terminal of the receptor by the short-circuit plug for selecting the desired operation mode. The operation mode of the industrial device is confirmed only when the operation mode of the selected control circuit and the operation mode of the selected sequence program are confirmed, and only when they match. control panel.

Images