JPH11169976A - Feed monitor device for press machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a feed monitor device to cope with a single product conveying system as well as a dividing conveying system only through setting a simple data by providing a miss-grip abnormal stopping output device which receives a miss-grip signal transmitted from a miss-grip control unit and transmits a stopping signal to a press machine. SOLUTION: When a miss-grip judging device 15 judges as the abnormality through a pattern setter 12, the miss-grip signal is transmitted. Then, the miss- grip abnormal stopping output device 4 receives the miss-grip signal and the stopping signal for quickly stopping the press machine, is transmitted. Therefore, even in the case of being a die divided into two or four in a stage on the way of conveying, the data are inputted from a stage data input means 2, and the miss-grip in the various work conveyings is judged only by setting the prescribed conditions to each setter 11, 12 and 13, and the press machine can be stopped. Therefore, the load of a worker is reduced and the working efficiency can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feed monitor apparatus for a press machine having a sensor for judging whether or not a finger provided for each stage provided on a feed bar for conveying a work has gripped the work normally. Regarding, in addition to the case where the work is directly transported and machined, even when used in the case where the work is divided into a plurality of pieces such as two or four in the middle of the machining, the continuous operation of the press machine in a state where the work is toothless can be performed. There is an effect that the press machine can be stopped when an abnormality occurs.

[0002]

2. Description of the Related Art As a feed monitor device of a press machine, for example, there is a feed monitor device shown in FIG. In FIG. 3, the transfer feeder S
Is the material T in each of the stages 1 to 7 for each cycle of the clamp V, the feed W, the unclamping X, and the return Y.
Are sent to the next step. While the material T on the stage 1 and the stage 5 is sent to the next stage, the presence or absence of the passage detection devices K and L is detected. In the case of the presence, the misgrip detection on the stage 2 and the stage 6 is performed. The devices MG1 and MG3 operate normally, and the material T is sent to the press machines P1 and P2, where the mis-grip detection devices MG2 and MG4 detect the position again, and then press work. Each detection device K, L, MG3,
The detection signal of MG2 and MG4 is a reset signal for each cycle of the feeder S, and controls the detection device of the next stage to be effective when there is, and to invalidate when there is no detection device. The call was sent to stop the press machine.

[0003]

The press monitor apparatus shown in FIG. 3 can cope with the press work in a single-item conveying system in which the number of works carried in is sequentially conveyed to the next step by a feed bar. However, if the stage in the middle of the work transfer includes a mold for dividing the work into two, four, etc., the misgrip detecting device provided on the feed bar of the transaffe feeder S such as the above-described MG1 to MG4 That is, it is necessary to rearrange or add sensors, and to provide a dedicated control circuit capable of coping with the arrangement every time, and there is a drawback that a lot of time is required for a preparation work before the press work.

An object of the present invention is to solve the above-mentioned problems and to provide a feed monitor device for a press machine which can cope with both a single-item transfer system and a divided transfer system by simply setting data.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a single-item transfer system in which works carried in one by one are successively carried to the next step by a feed bar. A plurality of fingers and sensors are provided, which can support the divided transfer method in which the work is divided into a plurality of parts at an arbitrary stage, and sequentially transferred to the next process by a feed bar,
A timing cam output device for transmitting a timing signal during the advance operation is provided for each cycle of feed bar conveyance. A misgrip control unit is provided corresponding to each stage, and the misgrip control unit of each stage is provided with stage data input means for inputting and setting data required for the stage. There is provided a misgrip abnormal stop output device that inputs a misgrip signal transmitted from any of the misgrip control units and transmits a stop signal of the press machine.

In each of the misgrip control units, a use setting device for setting use / non-use of a plurality of sensors of the stage from stage data input means, and the number of workpiece divisions from stage data input means. A pattern setting device to be set, a monitor setting device for setting the use / non-use of the stage and the presence / absence of the gear extraction operation, and data set to the use setting device and the pattern setting device from the stage data input means. Then, based on this data, a work presence / absence check device that checks detection signals input from a plurality of sensors of the stage to determine the presence or absence of a work and outputs the work, and receives and stores the output of the work presence / absence check device, Work presence / absence storage device that outputs to the next stage by the timing signal of the cam output device, pattern setting device and monitor Input the data set in the container and based on this data, check the input from the work presence check device and the work presence storage device of the previous stage, and if these work presence / absence are not sign, judge it as misgrip, A misgrip determination device for transmitting a misgrip signal is provided.

As described above, a feeder having a finger and a misgrip detection sensor corresponding to each stage, which can cope with both the single item transport system and the split transport system by simply setting required data by the stage data input means. A feed monitor device of a press machine configured to sequentially convey a workpiece to each stage by a bar and perform press working is configured.

[0008]

1 and 2 show an embodiment of a feed monitor for a press machine according to the present invention. FIG.
2 shows a configuration diagram of a feed monitor device that can support both the single-item transfer method shown in FIG. 2A and the divided transfer method shown in FIG. 2B.

In FIG. 1, a feed monitor device 17 is shown.
A mis-grip control unit 1 for the number of stages of a press machine and an idle stage; a stage data input means 2 for setting required data for each stage in the mis-grip control unit 1 corresponding to each stage; In order for Unit 1 to make a misgrip determination,
A timing cam output device 3 for transmitting a timing signal corresponding to a crank angle of a press machine or a rotation angle of a feed bar driving device, and a misgrip control unit 1
And a mis-grip abnormal stop output device 4 which receives a mis-grip signal which is determined and transmitted as a mis-grip and transmits a stop signal for suddenly stopping the press machine.

The misgrip control unit 1 of each stage detects when a finger of a corresponding stage provided on a feed bar, described later, grips a work, and sends a signal indicating that there is a work to the four sensors 10.
And four sensors 10 from the stage data input means 2
Setting device 11 for setting use / non-use of each
And a pattern setting unit 12 for setting the number of divisions such as no division, two divisions, or four divisions as a work division pattern.
A monitor setting unit 13 for setting use / non-use of the stage and the presence or absence of a tooth extraction operation; and a work presence / absence check device 14 for processing inputs from the sensor 10 and the setting units 11, 12, and 13. , A misgrip determination device 15 and a work presence / absence storage device 16.

The work presence / absence checking device 14 detects that the pattern setting device 12 has set no
If there is one or more inputs, it is determined that there is a work. If two divisions are set on the left and right sides, it is determined that there is a work if one of the two sensors 10 before and after the two in the feed bar feed direction transmits. Furthermore,
If four divisions are set in front, rear, left and right, four sensors 1
0 independently determines the presence or absence of a work.

The work presence / absence storage device 16 receives and stores the work presence / absence judgment of the work presence / absence check device 14, and receives the timing signal of the timing cam output device 3 transmitted by the next advance operation of the feed bar.
Miss grip control unit 1 for next stage
, Then reset.

The misgrip judging device 15 judges that the work is normal when the monitor setting unit 13 sets the non-use, and when the work presence checking device 14 judges that there is no work. In addition, when the monitor setting unit 13 is set to use and no tooth extraction operation is set, when the presence of a work is input from the work presence / absence check device 14 by the timing signal of the timing cam output device 3, it is determined to be normal. Furthermore, when the monitor setting device 13 is set to use and the tooth extraction operation is set, the work presence / absence storage device 1 of the previous stage is set.
When the presence of a work is input with a timing signal from 6 and the presence of a work is input from the work presence / absence check device 14,
It is determined that the work is normal, and conversely, the work presence storage device 1 of the previous stage
When there is no work in step 6 and the work presence check device 14 also inputs that there is no work, it is determined to be normal.

Further, the misgrip judging device 15 transmits a misgrip signal when the above-mentioned pattern setting device 12 is weighted and judged to be abnormal. Therefore, even when there is a mold to be divided into two or four in the stage in the middle of the conveyance, various data can be obtained simply by inputting data from the stage data input means 2 and setting necessary conditions in the setting devices 11, 12 and 13. It is possible to determine the misgrip in the work transfer and stop the press machine. The work is supplied to the first stage, and the misgrip can be directly determined. Therefore, the misgrip control unit 1 of this stage includes:
The signal from the work presence / absence storage device of the previous stage is unnecessary.

FIG. 2 (a) shows a single-item conveying system, in which fingers 19, 19 and feed bars 18, 18 corresponding to each stage are subjected to a clamping operation in which the feed bars 18, 18 approach each other. , And a sensor 10 for detecting that the work 20 is held between the fingers 19, 19. The sensor 10 is provided on each finger 19.
If the fingers 19 of each stage hold the work 20 and the sensor 10 detects that the sensor 10 has been held, the conveyance is performed normally, and if no detection signal is output in any of the stages, it is determined that there is an abnormality. I do.

FIG. 2B shows a case in which the last sixth stage has a mold for performing the four-part division in the divided transport system. However, it is possible to cope with the two-part or four-part division at any stage. In addition, two fingers for each feed bar 18 and four fingers 19 on both sides are opposed to each stage so as to correspond to four divisions.
0 is provided.

2 (a) and 2 (b), the feed bars 18, 18 are used for a clamping operation approaching each other, an advance operation for transporting the work 20 to the next stage, and an operation for placing the work 20 on the transported stage. The unclamping operation and the return operation to return to the original stage are performed as one cycle, and this is repeated. The arrow indicates the sensor 1
An example of a transmission path of a detection signal of 0 is shown.

[0018]

As is apparent from the above description, according to the present invention, the required data can be set from the stage data input means provided on the operation panel of the press machine in either the single item transport system or the split transport system. Thus, there is an effect that the burden on the operator can be reduced and the working efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a control circuit block diagram of a feed monitor device of a press machine according to an embodiment of the present invention.

FIG. 2 (a) is a plan view of a single-piece conveying method of a feed bar of a press machine. (B) Similarly, a plan view of a divided conveying method of a feed bar of a press machine.

FIG. 3 is an explanatory view of a conventional example.

[Explanation of symbols]

1 is a misgrip control unit, 2 is stage data input means, 3 is a timing cam output device, 4 is a misgrip abnormal stop output device, 10 is a sensor, 11 is a use setting device, 12 is a pattern setting device, and 13 is monitor setting. Bowl, 14
Is a work presence / absence check device, 15 is a misgrip determination device, 16 is a work presence / absence storage device, 17 is a feed monitor device, 18 is a feed bar, 19 is a finger, and 20 is a work.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B30B 15/28 B30B 15/28 N

Claims (1)

[Claims] 1. A feed of a press machine for sequentially transporting a work (20) to each stage by a feed bar (18) having a finger (19) corresponding to each stage and a sensor (10) for detecting a misgrip and performing press working. In the monitor device, (a) a single-item transfer method in which the works (20) carried one by one into the feed bar (18) are sequentially transferred to the next process by the feed bar (18), and a work (20) carried in (19) and sensors (10) capable of coping with the divisional conveyance method in which is divided into a plurality of parts by an arbitrary stage and sequentially conveyed to the next step by the feed bar (18)
Is provided. (B) A timing cam output device (3) for transmitting a timing signal during the advance operation is provided for each cycle of the feed bar (18) conveyance. (C)
A misgrip control unit (1) is provided corresponding to each stage. (D) The misgrip control unit (1) of each stage is provided with stage data input means (2) for inputting and setting data required for the stage.
(E) Any of the misgrip control units (1)
A mis-grip abnormal stop output device (4) for inputting a mis-grip signal transmitted from the controller and transmitting a stop signal of the press machine. (F) Each of the misgrip control units (1) includes: a) a use setting device for setting use / non-use of the plurality of sensors (10) of the stage from the stage data input means (2). (11) b) a pattern setting device (12) for setting the number of work divisions from the stage data input means (2); c) use of the stage from the stage data input means (2) A monitor setting device (13) for setting whether or not the non-use and tooth extraction operation are performed; d) the use setting device (11) and the pattern setting device (1);
(2) a work presence / absence check device (14) for inputting the data set in (2) and checking the detection signals inputted from the plurality of sensors of the stage based on the data to judge the presence / absence of the work and outputting the work; E) a work presence / absence storage device (16) that receives and stores the output of the work presence / absence check device (14), and outputs to the next stage by a timing signal of the timing cam output device (3); Data set in the setting device (12) and the monitor setting device (13) is input, and based on the data, the work presence / absence check device (14) and the work presence / absence storage device (16) in the previous stage are input. The input is checked. If the presence or absence of these workpieces is not signified, it is determined as a misgrip, and a misgrip determination device (15) for transmitting a misgrip signal. The provision. A feed monitor device capable of coping with both the single item transport system and the divided transport system by simply setting required data by the stage data input means (2).