JP2002143956A - Press slug remover, and operating method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a press slug remover which safely and surely removes slug generated during the pressing, and with which the efficiency of punching work by the pressing is improved. SOLUTION: The press slug remover 10 having a removal slider 11 to be reciprocated toward a space between a male die 6 and a female die 8 with the male die 6 and the female die 8 separated from each other is provided on a press machine which presses the male die 6 to the female die 8 to punch a part of a workpiece 40. Even when burrs of the slug 42 are locked by the female die 8, the advancing removal slider 11 collides with the slug 42 to press out the slug 42 from the female die 8. The slug 42 is surely removed to continuously and safely perform the punching and to improve the efficiency thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press scrap removing apparatus for removing press scrap generated when a workpiece is punched by a press machine, and a method of operating the same.

[0002]

2. Description of the Related Art Conventionally, when a metal plate is processed to produce parts and products of various shapes, a metal plate is arranged between a pair of dies, and one of the dies is pressed against the other. A press machine for forming a metal plate is used.

In order to perform punching with such a press machine, for example, as shown in FIG. 9A, a mold divided into a male mold 100 and a female mold 101 is employed. , Male
With the 100 raised, the workpiece 102 is set on the female die 101 by a robot hand (not shown), manual operation, or the like. Here, when setting the workpiece 102,
The workpiece 102 is positioned using a guide member 103 provided on the upper surface of the female die 101.

When the setting of the workpiece 102 is completed, the male mold
9 starts moving downward toward the female mold 101, and further enters the interior of the female mold 101, as shown in FIG. 9 (B), from the peripheral portion 104 to the central portion 105 of the workpiece 102. Once punched out, this will start to climb.

[0005] The punched central portion 105 is shown in FIG.
As shown in FIG.
Rises while engaging the male mold 100 and engages the guide member 103. When the male mold 100 further rises, the male mold 100 is locked by the guide member 103, and the peripheral portion 104 falls on the female mold 101 as shown in FIG. 9D.

Thereafter, compressed air is blown to the peripheral portion 104, and the peripheral portion 104 is discharged backward in FIG. 9D.
Here, the central portion 105 becomes a product and the peripheral portion 104
Becomes a press blank generated by press molding.

In the punching process using such a press machine, when the male mold 100 and the female mold 101 are new, or immediately after the cutting edge is sharpened, the burrs generated on the product 105 and the cutting waste 104 ( Since the burrs are small, most of the scraps 104 are not hung on the female mold 101, and the scraps 104 can be removed by blowing compressed air.

However, when the cutting edges of the male mold 100 and the female mold 101 are blunted, the burr generated on the product 105 and the scrap 104 increases, and the burr of the scrap 104 is reduced by the female mold.
Hooked by 101
Can not be removed, and every time the punching process is performed, the scrap 104 remains inside the female mold 101.

Then, another workpiece 102 is set on the female die 101 while the blank 104 is left inside the female die 101, and the next punching process is performed, as shown in FIG. Since the workpiece 102 is pressed against the scrap 104 with a strong force, the product 105 is damaged, and the male mold 100 and the female mold 101 are also applied with excessive force. 101 may be damaged.

[0010] For this reason, the swarf is removed by blowing compressed air.
If 104 cannot be removed, the press machine is stopped every time punching is performed, and in the stopped state, an operator manually removes the scraps 104.

When the scratch on the product 105 is small, the repair operation of the scratch can be performed. However, when the scratch is large, the product 105 becomes defective.

[0012]

As described above, if the worker removes the scrap manually, the punching cannot be performed continuously even in the automatic operation, so that the efficiency of the punching is low. There's a problem.

[0013] Further, there is another problem that removing the scraps by hand requires putting a hand between the male mold and the female mold of the press machine that presses the male mold with a strong force, which is dangerous.

Here, in order to prevent the deterioration of the cutting edge, various studies were conducted on the material of the mold, the surface treatment, the clearance between the male mold and the female mold, and the like. I didn't do it.

Further, if the blades are replaced or sharpened every time the scraps cannot be removed by blowing the compressed air, the efficiency of the punching process cannot be improved.

Further, as shown in FIG.
When the product 105A is machined by punching from the workpiece 102A, which is one size larger than the product 105A, the scrap 104A becomes a ring-shaped unit.

On the other hand, the shape of the corner of the corner is
From the workpiece 102B slightly larger than 2A, punched
When a product 105B with the same shape as 105A is machined,
Is divided into a plurality of strips.

As described above, in press stamping, various scraps having different dimensions and shapes are generated even if the shapes of the workpieces are slightly different.

[0019] For this reason, various kinds of scraps having different dimensions and shapes are generated due to differences in the shapes and patterns of products and workpieces. Therefore, transmission type and reflection type optical sensor technologies such as laser sensors are used. In addition, it is difficult to realize a detecting means for detecting the scraps remaining in the female mold by applying the image processing technology.

Further, even if the detecting means is realized, it is meaningless to manually remove the scraps every time the detection is performed, and a robot hand for removing the scraps remaining in the female mold must be realized. However, since the size and shape of the scraps are various, it is more difficult to realize the robot hand as described above.

An object of the present invention is to provide a press scrap removing apparatus and a method of operating the same, which can remove the scrap generated by press forming safely and reliably and improve the efficiency of the punching operation by press forming. It is in.

[0022]

A first invention of the present invention is generated when a workpiece is punched by a press machine for pressing one of a male mold and a female mold of a pressing mold toward the other. A press scrap removing device for removing a press scrap from the press die, wherein the male mold and the female mold are separated from each other, and in order to remove the press scrap, the male mold and the female mold are removed. A removal slider reciprocally driven between the female molds is provided.

In the present invention, when the removal slider is advanced, the removal slider collides with the scrap and pushes the scrap to the outside of the mold, so that the burr of the scrap is hooked on the female mold. Even if it is performed, the removal of the scrap can be surely performed.

Since the removal operation of the removal slider can be performed automatically, the operator does not need to remove the scrap manually, and continuous punching by automatic operation of the press machine is realized. The efficiency of punching is improved.

In addition, since it is not necessary to remove the scrap manually, there is less work to put a hand inside the press machine, and the danger in press working can be reduced.

Here, as a driving system for driving the removal slider, the power of the press machine is taken out by a gear or the like,
Both a passive type that drives the removing slider with this power and an active type that includes a driving means such as an electric motor or an air cylinder device and can drive the removing slider when the press machine is not operating can be adopted.

In the above-described press scrap removing device, it is preferable to provide a fluid ejection port for blowing fluid toward a position where the press scrap remains.

By providing such a fluid ejection port, even if fine scraps that cannot be completely removed by the operation of the removing slider are generated, the scraps can be removed, and the fine scraps remain in the mold. Malfunctions of the press machine and the press scrap removal device are prevented beforehand.

At this time, it is desirable that air is blown from the fluid ejection port.

By removing the scraps with air as described above,
Since the air does not adversely affect the press machine and the press scrap removing device, etc., it can be left after removing the scrap and after using it for removing the scrap, like other fluids such as oil. There is no need to collect and it can be handled easily.

Further, in the above-described press scrap removal device, it is preferable that a driving means for reciprocatingly driving the removal slider is provided.

As described above, by providing a driving means dedicated to the press debris removing device so that it can be driven separately from the press machine, various press debris removing devices corresponding to the type and shape of the press die are prepared. And even if it can be exchanged together with a die according to the product to be pressed, there is no need to mechanically connect to the power source of the press machine, and the exchange operation can be performed easily.

Here, it is desirable that the driving means is an air cylinder device driven by compressed air.

When the removal slider is driven by the air cylinder device driven by the air as the compressive fluid, the air absorbs the impact when the removal slider collides with the scrap, and the scrap is formed by the die. To be stuck,
Even if the removal slider stops halfway, no excessive force is applied to the press-scrap removal device and the mold, and damage to the press-scrap removal device and the mold can be prevented.

Further, in the above-mentioned press scrap removing device, control means for controlling the removing operation of the removing slider in accordance with the operation of the press machine, and when the removing slider arrives at the starting point of the stroke, the starting point arrival signal is output to the start point. A first position detection unit that outputs to the control unit; and a second position detection unit that outputs an end point arrival signal to the control unit when the removal slider reaches the end point of the stroke, wherein the control unit performs the removal operation. When both the end point arrival signal and the start point arrival signal are not received within a predetermined time after the start, it is preferable that the removal operation of the removal slider is repeated again.

In normal press working, even if the removal slider is caused to collide only once, it is not possible to remove the scraps stuck to the mold, but if the removal slider collide several times, the scraps can be removed. In most cases,
If the control means as described above is provided, even if the scraps may stick to the mold, the scraps can be reliably removed, and it is not necessary to stop the automatically operating press machine, and the It is possible to perform a punching operation, and the efficiency of the punching operation is further improved.

At this time, the control means can set the maximum number of repetitions of the removing operation in one press operation, and the control means performs the removing operation when repeating the removing operation again. When the number of times exceeds the maximum number of times of repetition, it is desirable that the removing operation is stopped, an abnormality is notified, and the press machine is stopped.

There is a case where a scrap is stuck to the mold due to an abnormality in the press mold or the like. In this case,
Simply by colliding the removal slider, it is not possible to remove the scraps, and it is necessary to stop the press machine and inspect by an operator.

In view of the above, if the removal means cannot be removed even if the removal means is provided with the control means as described above and the removal slider is collided a plurality of times, it is considered that there is an abnormality in the mold or the like, and the operation of the press machine is stopped. When the operation is stopped, the operation of the press machine is not continued in an abnormal state, and large damage to the mold and the press machine is prevented.

According to a second aspect of the present invention, there is provided a press machine for pressing one of a male die and a female die of a pressing die toward the other. A method of operating a press scrap removing device for removing from a mold, wherein the male mold and the female mold are separated from each other, and the male mold and the female mold are used to remove the press scrap. A removing slider that is reciprocally driven between the nozzles and a fluid ejection port that ejects a fluid toward a position where the press scrap remains, and removes the fluid from the fluid ejection port. After blowing, the removal slider is advanced between the male mold and the female mold.

In this way, even if fine scraps which cannot be completely removed by the operation of the removing slider are generated, the fine scraps can be removed by the fluid blown out from the fluid ejection port, and the removing slider can be removed. Prior to the operation of
Since the fine scum is removed by the fluid blown out from the fluid ejection port, when the removal slider is operated, the fine scum that causes malfunction of the removal slider does not remain in the mold, and the removal slider can be reliably mounted. Therefore, even if scraps of various sizes and shapes are generated, it can be reliably removed by the press scrap removing device.

In the operation method of the press scrap removing device as described above, the press scrap removing device has an inner peripheral edge corresponding to the male cross-sectional shape, and includes the set of the workpiece. A guide member for guiding the workpiece is provided at an interval from the female die, and when the male die punches out the workpiece, the male die is retracted from the female die. It is preferable that the press scum that bites into the male mold is hung on the guide member and is forcibly removed from the male mold.

According to this configuration, even if the press scum bites into the male mold, the press scum is caught by the guide member by forcing the male mold back from the female mold, and is forced from the male mold. Is removed between the guide member and the female mold, and is reliably removed from the mold by the operation of the fluid ejection port and the removing slider. It becomes possible to reliably remove the waste with the scrap removal device.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a press machine 1 according to this embodiment.
It is shown. The press machine 1 is configured by connecting a crown 2 and a bed 3 arranged at the top and bottom in the figure by a column 4. The crown 2 incorporates a motor and a crankshaft (not shown). The motor and the crankshaft are for reciprocatingly driving a slide 5 movably provided along the column 4 with respect to the bed 3.

Two male dies 6 for press punching are attached to the slide 5. On the other hand, a bolster 7 provided on the bed 3 has a male 6
A female die 8 for press punching is mounted at a position corresponding to each of the above. Each of these female dies 8 is integrally provided with a press-screw removal device 10.

The press machine 1 is set so as to press the male die 6 toward the female die 8 to punch out the workpiece set on the female die 8.

The column 4 is provided with a bottom dead center position detecting device 9 such as a rotary cam type limit switch for detecting that the slide 5 has reached the bottom dead center position.

FIGS. 2 and 3 show an enlarged debris removal device 10 according to the present invention.

In FIG. 2 and FIG.
A removing slider 11 reciprocatingly driven between the male die 6 and the female die 8 in order to remove press debris while the male die 6 and the female die 8 are separated from each other; It has a sheath portion 12 that slidably supports 11, and an air cylinder device 13 that is driving means for driving the removal slider 11. The female die 8 is provided with a base 8A for fixing to the bolster 7.

The sheath 12 includes a bottom member 14 for guiding the rear surface of the removal slider 11, a pair of side members 15 for guiding both end surfaces of the removal slider 11, and an edge along the edge of the removal slider 11. And a pair of surface members 16 for guiding the front surface.

The side surface member 15 of the sheath 12 has a fixed portion 15A extending longer toward the female die 8 than the bottom member 14 and the surface member 16.

Above the female die 8, a pair of guide members 17 for guiding the workpiece when setting the workpiece are provided at a distance from the female die 8. These guide members 17
Has an inner peripheral edge portion 17A corresponding to the plan sectional shape of the male mold 6. These inner peripheral portions 17A are arranged to face each other. When the workpiece is punched by such a guide member 17, even if a ring-shaped press scum sticks to the male die 6, the male die 6 rises and the guide member is raised.
A scrap is hung on 17 and the scrap is removed from the male mold 6. The scrap removed from the male mold 6 remains between the guide member 17 and the female mold 8.

The scum removing device 10 is provided together with the guide member 17 and the female die 8 with the fixed portion 15A provided on the sheath portion 12 interposed between the guide member 17 and the female die 8. It is fixed to the base 8A.

The removal slider 11 has a rectangular sliding portion 11A.
Further, it is a blade-shaped member provided with an elongated handle-shaped connecting portion 11B extending rearward.

The distal end of the elongated connecting portion 11B is connected to the distal end of the piston rod 13A of the air cylinder device 13.

Further, a gap is provided between the sliding portion 11A and the bottom surface member 14 of the sheath portion 12 on the lower surface in the figure of the edge portion on the female die 8 side. This gap serves as a fluid outlet 20 for blowing air as a fluid blown toward the position where the scrap remains.

As shown in FIG. 3, when the compressed air is supplied to the air supply port 21 provided at the end on the female die 8 side, the air cylinder device 13 causes the piston 22 to move in the direction in which the piston rod 13A moves forward. When the compressed air is supplied to the air supply port 23 on the opposite side to the air supply port 21 when driven, the piston rod 13
This is a double-acting type in which the piston 22 is driven in the direction in which A moves backward.

The removal slider 11 reciprocates between the start point and the end point of a predetermined stroke as the air cylinder device 13 advances and retreats. That is, the piston rod 13
By retreating A, it is possible to advance to a position A covered over the female die 8, and by advancing the piston rod 13A, it is possible to retreat to the original position B.

Here, the position B is the start point of the above-mentioned predetermined stroke, and the position A is the end point of the predetermined stroke.

The air cylinder device 13 is provided with a first position detection sensor 31 and a second position detection sensor 32 for detecting the position of the piston 22.

Here, when the removal slider 11 arrives at the position B which is the starting point of the stroke, the piston 22 detects the position, and when the removal slider 11 arrives at the position A which is the ending point of the stroke. The position is detected by the position detection sensor 32.

Here, the position detecting sensor 31 serves as first position detecting means for outputting a starting point arrival signal to the control device 33 described later when the removing slider 11 arrives at the starting point of the stroke. On the other hand, the position detection sensor 32 is
The second position detecting means 11 outputs an end point arrival signal to a control device 33 described later when the end point 11 reaches the end point of the stroke.

The control device 33 is configured using a digital sequencer or the like, and serves as control means for controlling the removal operation of the removal slider 11 according to the operation of the press machine 1.

More specifically, an operation signal indicating that the press machine 1 is in operation is transmitted from the control device of the press machine 1,
Further, a slider timing signal indicating that the slide 5 has reached the bottom dead center position is received from the bottom dead center position detection device 9, and the solenoid valves 34 and 35 for control are opened and closed.

When the removal slider 11 returns to the starting point B for safety, the control device 33 outputs an operation enable signal to the control device of the press machine 1 and the removal operation by the removal slider 11 is performed for a predetermined time. If not completed, a stop signal is output to the control device of the press machine 1.

Here, the solenoid valve 34 is a solenoid valve for supplying compressed air. Among them, the solenoid valve 34A is for supplying compressed air to the air supply port 21 and the fluid ejection port 20 of the air cylinder device 13. The solenoid valve 34B supplies compressed air to the air supply port 23 of the air cylinder device 13.

The piping 36 provided with the solenoid valve 34A
Is provided with branch portions 36A and 36B extending to the air supply port 23 and the fluid ejection port 20, respectively. Of which, 36A
Is provided with a check valve 37 so that the compressed air supplied to the air supply port 23 of the air cylinder device 13 is not discharged from the fluid ejection port 20.

The solenoid valve 35 is a solenoid valve for discharging compressed air. Among them, the solenoid valve 35A is for discharging compressed air from the air supply port 23 of the air cylinder device 13.
The solenoid valve 35B discharges compressed air from the air supply port 21 of the air cylinder device 13.

The solenoid valves 34 and 35 are set as A-type solenoid valves for moving the removal slider 11 forward when the solenoid valve 34A and the solenoid valve 35A are opened, and the solenoid valve 34B and the solenoid valve 35
B is set as a B-type solenoid valve for retracting the removal slider 11 by the opening operation.

Hereinafter, the control device 33 of the present embodiment will be described with reference to flowcharts.

First, when the control device 33 is activated, the control device
33, the removal slider 11 in one press operation
The operation of the press machine 1 is started after the maximum number of repetitions Nmax of the removing operation is set.

When the control device 33 is started, as shown in FIG. 4, first, in step S101, the number of repetitions n of the removing operation is reset, and the value of n is set to "0". Then, in step S102, the slide 5 in other words, the male die 6 reaches the bottom dead center and waits until the slider timing signal is sent. The male die 6 reaches the bottom dead center and the slider timing signal is sent. Then, the process proceeds to a removing operation subroutine started from step S200.

In the removing operation subroutine, as shown in FIG. 5, in step S200, the value of the time t of the timer for measuring the time required for the removing operation is reset to "0", and the timer is started. Step S201
Proceed to.

In step S201, a flag J indicating that the removal slider 11 has reached the end point of the stroke and a flag K indicating that the removal slider 11 has reached the start point of the stroke are reset to "0". Proceed to A
The system solenoid valves 34A and 35A are opened, the system B solenoid valves 34B and 35B are closed, and the removal slider 11 is advanced.

In the next step S203, the control waits until the time T1 considered necessary for the removal slider 11 to move forward elapses, and when the time t of the timer exceeds the time T1,
In step S204, it is confirmed whether or not the second position detection sensor 32 has output the end point arrival signal.

Here, when it is confirmed that the end point arrival signal has been output from the second position detection sensor 32, the value of the flag J is set to “1” in the next step S205, and then the process proceeds to step S206. move on.

On the other hand, when it is confirmed that the end point arrival signal has not been output from the second position detection sensor 32, step S2 is executed.
Skip 05, leave the value of flag J at "0",
Proceed to step S206.

In step S206, the A-system solenoid valves 34A and 35A
Is closed, the B-type solenoid valves 34B and 35B are opened, and the removal slider 1
Move one back.

Then, in step S207, the removal slider 11
Waits until the time T2, which is considered to be required for the reciprocation of the vehicle, elapses. If the time t of the timer exceeds the time T2, it is determined in step S208 whether the first position detection sensor 31 has output the start point arrival signal. Confirm.

Here, when it is confirmed that the start point arrival signal has been output from the first position detection sensor 31, the value of the flag K is set to "1" in the next step S209, and then the process proceeds to step S210. move on.

On the other hand, if it is confirmed that there is no output of the start point arrival signal from the first position detection sensor 31, step S2
Skip 09 and leave the value of flag K at “0”
Proceed to step S210.

In the next step S210, both the A-system and B-system solenoid valves are closed, the removal slider 11 is stopped, and the removal operation is temporarily stopped, and as shown in FIG.
Starts the abnormality detection subroutine starting from.

In the abnormality detection subroutine, as shown in FIG. 6, in step S300, it is determined whether or not both the values of the flags J and K are "1".

When the values of the flags J and K are both "1", the removal operation is performed as expected, and it can be regarded that the scrap has been removed normally, so that as shown in FIG. Then, the operation continuation determination subroutine starting from step S400 is started.

Returning to FIG. 6, if the values of the flags J and K are not "1" on one side, the removal operation is not performed as expected, and it is considered that a scrap remains, so that step S311 is performed. And the number n of repetitions of the removing operation is the maximum number Nma
After confirming that it does not exceed x, the next step S311
Then, 1 is added to the number of repetitions n, and the process proceeds to step S200.
The removal operation subroutine is performed again.

Here, in step S311, when it is confirmed that the number of repetitions n of the removing operation exceeds the maximum number Nmax, even if the removing slider 11 is caused to collide a plurality of times,
Since it is not possible to remove the scrap, it is considered that there is an abnormality in the mold or the like. Therefore, an abnormal alarm sound is generated in step S320, and a stop signal is transmitted to the control device of the press machine 1 in step S321. Then, the operation of the press machine 1 is stopped.

Thereafter, in step S322, the abnormality of the mold or the like is repaired, and the apparatus waits until a reset signal is manually input. When the reset signal is input, step S4 is performed.
An operation continuation determination subroutine starting from 00 is started.

In the operation continuation determination subroutine, as shown in FIG. 7, in step S400, it is confirmed whether or not the press machine 1 is continuing to operate. Since there is no need to perform the removing operation, the operation is terminated as shown in FIG.

Returning to FIG. 7, if the press machine 1 continues to operate, it is necessary to remove the scraps generated in the next press operation. Therefore, in step S401, the removal slider 11 After confirming that the start point has been reached, an operable signal is output to the control device of the press machine 1, and then the process proceeds to step S101 to start a new removing operation.

Next, the operation of the press scrap removal device 10 according to this embodiment will be described.

First, when the workpiece 40 is automatically set on the female die 8 by a material supply means such as a robot hand, FIG.
As shown in (A), the male mold 6 starts processing. Then, as shown in FIG. 8B, the male mold 6 is
When a product 41 is punched from 40, a scrap 42 is generated. And when it reaches the bottom dead center, the male mold 6 starts to rise,
The product 41 falls downward.

Here, when the male die 6 punches out the workpiece 40, even if the male die 6 is bitten by the ring-shaped press waste 42, as shown in FIG. When the male mold 6 rises, it is hooked on the guide member 17 and is forcibly removed from the male mold 6 and remains between the guide member 17 and the female mold 8.

When the male mold 6 passes through the bottom dead center, FIG.
As shown in (D), the press scrap removing device 10 starts operating, and compressed air is blown from the fluid ejection port 20 toward the scrap 42 remaining on the female die 8. As a result, the burrs 42 with small burrs are discharged to the left side in the drawing, and are removed from the female die 8.

On the other hand, a scrap 42 having a relatively large burr
Is not discharged only by blowing compressed air but remains on the female die 8, so that the removing slider 11 moves forward as shown in FIG. The scrap 42 is eliminated.

In this case, even if the removal slider 11 is caused to collide once, the scraps 42 cannot be removed in some cases. Therefore, the removal slider 11 may be removed within a range not exceeding the maximum number of repetitions Nmax.
8F, the scraps 42 are completely removed from the female die 8 as shown in FIG. 8 (F), and the above-described removal operation per press is completed.

According to the above-described embodiment, the following effects can be obtained.

That is, the removal slider 11 reciprocatingly driven between the male mold 6 and the female mold 8 is provided.
Is pushed out of the female mold 8 and removed, so that the burrs of the scrap 42 are large and the scrap 42 can be reliably removed even when the scrap 42 is hooked on the female mold 8.

Since the removing operation of the removing slider 11 is automatically operated, it is not necessary for the operator to remove the scrap manually, and the press machine 1 is automatically operated to perform continuous punching. And the efficiency of punching can be improved.

In addition, since it is not necessary to remove the scraps 42 by hand, the number of operations for entering the inside of the press machine 1 is reduced, and the danger in press working can be reduced.

Further, a fluid ejection port 20 for ejecting fluid toward the position where the scrap 42 remains is provided.
Since the scraps 42 are also removed at 20, even if fine scraps that cannot be completely removed by the operation of the removal slider 11 are generated, the scraps can be removed and the fine scraps can be removed by the female die 8. It is possible to prevent both the operation failure of the press machine 1 and the operation failure of the press scrap removal device 10 due to the residual of the press machine.

At this time, since air is blown out from the fluid ejection port 20, even if the scrap is removed by a fluid, the air has no adverse effect on the machine, the press scrap removing device and the like, and the scrap is removed. After removal, the used air can be left untreated, and unlike other fluids such as oil, there is no need to collect after use for removal of scraps.
The fluid ejected from 20 can be easily handled.

In addition, prior to the operation of the removal slider 11, the fine air blow-off debris that cannot be removed by the removal slider 11 is removed by the air blown out from the fluid ejection port 20.
The removal slider 11 can reliably operate without leaving any fine scraps that cause the operation failure of the female die 8, and even if the scraps having various dimensions and shapes are generated, the press scraps can be removed. The removal device 10 can reliably remove it.

Further, a dedicated air cylinder device 13 is provided to drive the press scrap removal device 10 and can be driven separately from the press machine 1, so that the male and female types having different types and shapes are different. Various types of molds are prepared, and various press punching debris removal devices 10 are prepared corresponding to these dies so that the press debris removal device 10 can be exchanged together with the die according to the product to be pressed. Since there is no need to make a mechanical connection with the power source of the press machine 1, it is possible to easily perform the replacement work of the press scrap removing device 10.

Further, since the air cylinder device 13 driven by air, which is a compressible fluid, is employed as a driving means for driving the press scrap removal device 10, the removal slider 11
The air absorbs the impact when the colliding against the scrap 42 and the scrap 42 is stuck to the female die 8, so that even if the removing slider 11 stops halfway, excessive force is applied to remove the press scrap. It does not add to the device 10 and the female mold 8, and damage to the press-scrap removal device 10 and the female mold 8 can be prevented beforehand.

A control device 33 for controlling the removal operation of the removal slider 11 in accordance with the operation of the press machine 1 and a first position for detecting that the removal slider 11 has reached the end point A and the start point B of the stroke. Detection sensor 31 and second
A position detection sensor 32 is provided, and the control device 33 controls the removal operation of the removal slider 11 to be repeated again when both the end point arrival signal and the start point arrival signal are not received within a predetermined time from the start of the removal operation. I decided to
In the normal press working, even if the scraper 42 stuck to the female die 8 cannot be removed by colliding the removal slider 11 only once, the scraper 42 is collided with the removal slider 11 several times. Can be reliably removed, and there is no need to stop the automatically operating press machine 1, and continuous punching can be performed, and the efficiency of punching can be further improved.

Further, the controller 33 is instructed to perform the maximum number Nmax of removal operations per press operation.
When the number of times the removing operation is repeated exceeds the maximum number of repetitions Nmax, the removing operation is stopped, the abnormality is notified, and the press machine 1 is stopped. As a result, there is a high possibility that the scraps 42 are stuck to the female die 8 due to an abnormality in the press die or the like, and the scraps 42 cannot be removed simply by colliding the removal slider 11. Can be detected, and by this detection, the press machine is stopped, an abnormal alarm sound is generated, and an inspection is started by an operator.
Operation is not continued, and large damage to the mold and the press machine 1 can be prevented.

Further, it has an inner peripheral edge portion 17A corresponding to the plane cross-sectional shape of the male mold 6, and when the workpiece 40 is set,
A guide member 17 for guiding the workpiece 40 is provided at an interval from the female die 8. After the male die 6 punches the workpiece 40, the male die 6 is retracted from the female die 8. The press scraps 42 that bite into the male member 6 are hung on the guide member 17 and are forcibly removed from the male die 6 and remain between the female die 8 and the guide member 17. Pressing scraps attached
Even if 42 occurs, the press scrap 42 can be reliably removed by the press scrap removing device 11.

The present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to these embodiments, and various improvements and design changes may be made without departing from the gist of the present invention. It is possible.

For example, the driving means for driving the removing slider is not limited to the air cylinder device, but may be a hydraulic cylinder device driven by hydraulic pressure or an electric motor driven by electric power. It is not limited to a dedicated type, but may be a passive type driven by power taken out of a press machine.

The fluid blown out from the fluid ejection port is not limited to air, but may be an inert gas such as nitrogen gas, or an oil such as lubricating oil. Effects can be obtained.

Further, the device for removing press debris is not limited to the one having a fluid ejection port, but may be a device having no fluid ejection port. However, if a fluid ejection port is provided, the effect as in the above embodiment can be obtained. can get.

The workpiece is not limited to a metal material such as a metal plate, but may be a synthetic resin such as a thermoplastic resin or a thermosetting resin. What is necessary is just to select suitably.

[0114]

As described above, according to the press scrap removing apparatus of the present invention, the scrap generated by press forming can be removed safely and reliably, and the efficiency of the punching operation by press forming is improved. be able to.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire embodiment according to the present invention.

FIG. 2 is a perspective view showing a main part of the embodiment.

FIG. 3 is a cross-sectional view illustrating a main part of the embodiment.

FIG. 4 is a flowchart showing an operation of a control unit of the embodiment.

FIG. 5 is a flowchart showing a removing operation subroutine of FIG. 4;

FIG. 6 is a flowchart illustrating an abnormality detection subroutine of FIG. 4;

FIG. 7 is a flowchart showing an operation continuation determination subroutine of FIG. 4;

FIG. 8 is a diagram for explaining the operation of the embodiment.

FIG. 9 is a view for explaining press working of a conventional example.

FIG. 10 is a diagram for explaining a problem in press working of a conventional example.

FIG. 11 is a plan view showing a workpiece in a general press working.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Press machine 6 Male type 8 Female type 10 Press scum removal device 11 Removal slider 13 Air cylinder device as drive means 17 Guide member 17A Inner peripheral edge 20 Fluid ejection port 31 First position detection sensor as first position detection means 32 Second position detection sensor as second position detection means 33 Control device as control means 42 Press scrap

Claims (10)

[Claims] 1. A press machine that presses one of a male mold and a female mold of a press mold toward the other, and removes press scum generated when punching a workpiece from the press mold. A press scrap removing device, wherein the male mold and the female mold are separated from each other, and are reciprocated between the male mold and the female mold to remove the press scrap. A press scrap removing device comprising a removing slider. 2. The press scrap removing device according to claim 1, further comprising a fluid ejection port for blowing fluid toward a position where the press scrap remains. . 3. The press-screw removing device according to claim 2, wherein air is blown from the fluid ejection port. 4. The press-scrap removing device according to claim 1, further comprising a driving unit for reciprocatingly driving the removing slider. 5. The press scrap removing device according to claim 4, wherein said driving means is an air cylinder device driven by compressed air. 6. The press scrap removing apparatus according to claim 4, wherein said removing slider controls a removing operation of said removing slider in accordance with an operation of said press machine, and said removing slider starts at a stroke starting point. A first position detecting means for outputting a starting point arrival signal to the control means when it arrives at, and a second position detecting means for outputting an end point arriving signal to the control means when the removal slider reaches the end point of the stroke. The control means, if not receiving both the end point arrival signal and the start point arrival signal within a predetermined time after starting the removal operation, repeats the removal operation of the removal slider again. Press debris removal device. 7. The press scrap removing device according to claim 6, wherein the control unit is capable of setting a maximum number of repetitions of the removing operation in one press operation. In repeating the operation again, if the number of times the removal operation is performed exceeds the maximum number of times of repetition, the removal operation is stopped, and an abnormality is notified and the press machine is stopped. A feature for removing press debris. 8. The apparatus for removing press debris according to claim 1, wherein said apparatus has an inner peripheral edge portion corresponding to a plane cross-sectional shape of said male die, and is used when said workpiece is set. Wherein a guide member for guiding the workpiece is provided at an interval from the female die. 9. A press machine that presses one of a male mold and a female mold of a press die toward the other, and removes press scum generated when a workpiece is punched out from the press die. An operating method of a press scrap removing device, wherein the male mold and the female mold are separated from each other, and reciprocated between the male mold and the female mold to remove the press scrap. A driven removal slider;
And a fluid ejection port for ejecting a fluid toward a position where the press ejection residue remains. A method for operating a press scrap removing device, wherein the device is moved forward between female dies. 10. The method for operating a press scrap removing device according to claim 9, wherein the press scrap removing device has an inner peripheral edge portion corresponding to a plan sectional shape of the male die and the work piece. A guide member for guiding the workpiece when setting the workpiece is provided at an interval from the female die, and after the male die punches the workpiece, the male die is retracted from the female die. At this time, a method for operating a press-scrap removing device, wherein the press-screw that bites into the male mold is hung on the guide member and is forcibly removed from the male mold.