JPH115129A - Means and equipment to set up mold in press machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means and an equipment to set up the mold detachment/ attachment in a press machine which efficiently prevents the occurrence of the damages to the mold and the press machine without depending upon the worker's experience or guesswork. SOLUTION: The setting up method of this detachable/attachable press machine comprises a moving bolster 6 to fix a lower mold 4, and a slide 7 which supports a cope 5 to approach and leave against the moving bolster 6 by moving up and down between the top and bottom dead points, and a control device 30 which sets and memorizes the slide stop indicate angle for stopping based on the input data of the mold detachable/attachable setting up system. In this case, the slide 7 based on the data input for detaching/ attaching the mold stops sequentially at the following points; at the top dead point, at the first stop point as a given angle point before reaching the bottom dead point, at the second stop point as the bottom dead point, and at the third stop point as a given angle point after reaching the bottom dead point. Then, the operation to detach/attach the molds is sequentially carried out under each stop condition of the slide 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for setting up and removing a mold in a press device, which can efficiently perform the work of attaching and detaching a mold in the press device, and an apparatus therefor.

[0002]

2. Description of the Related Art In general, a press device has a moving bolster 103 for placing and fixing a lower die 101 as shown schematically in FIG. 5, and a lifting boss supported by a frame (not shown) opposite to the moving bolster 103. It is upper mold 102
And a connecting rod 107 that is swingably mounted between the crankshaft 106 and the slide 104.

The slide 104 is moved up and down through a connecting rod 107 by rotating a crankshaft 106 by a slide drive motor 105, and the lower mold 101 and the upper mold 102 moving up and down cooperate with each other to form a workpiece. It is configured to perform press working.

[0004] Next, the press apparatus 1 configured as described above.
The method of setting up and removing the mold at 00 will be described.

To remove the lower mold 101 and the upper mold 102 from the press device 100 for replacement or the like, first, the slide 10
4 is lowered to the bottom dead center position, and fastening means (not shown)
By unclamping the upper mold 102 on the lower mold 101 on the moving bolster 103,
Only the slide 104 from which the upper mold 102 has been removed is raised, and then the moving bolster 103 and the lower mold 101 and the upper mold 102 on the moving bolster 103 are unloaded from the press device 100.

On the other hand, in order to attach the lower die 101 and the upper die 102 to the press device 100, the moving bolster 10
3 and the upper die 102 is placed on the lower die 101 on the moving bolster 103, and is carried into the press device 100. Then, the slide 104 is lowered to the bottom dead center position, and the fastening means is clamped. Upper mold 1
02.

When the slide 104 is lowered to the bottom dead center position to remove the lower die 101 and the upper die 102 from the press device 100, and the lower die 101 is placed on the lower die 101, the lower die 101 and the upper die 102 are removed. The lower mold 101 and the upper mold 1 may be displaced relative to the mold 102, i.e., a relative deviation may occur, or due to insufficient removal of the accessory device that affects the removal.
02, especially those working surfaces which affect the quality of the product.

For this reason, as a means for accurately stopping the slide 104 at the bottom dead center position, the press device 100 is provided with a jogging device (micro inching device) in which the slide 104 moves up and down only when the jog switch is operated. I have. The vertical movement of the slide 104 is repeated by repeating the ON and OFF operations of the inching switch, and the positioning of the slide 104 is stopped at the bottom dead center position.

As a prior art for stopping a slide at a predetermined position in a press device, there is, for example, Japanese Patent Application Laid-Open No. Hei 5-237574.

This prior art includes a control circuit including a slide drive mechanism, a slide angle detector, a starter switch, a storage unit in which release start angle data is stored in advance, and an arithmetic processing unit. When the start instruction signal is input from the starter switch, the slide drive mechanism is controlled so that the slide descends at an extremely low speed, and the release start angle data read from the storage unit and the slide angle data input from the slide angle detector are used. A slide control device for setting a release angle of a feed device of a press device configured to control a slide drive mechanism such that the slide stops at the release start angle based on the release angle. .

[0011]

According to the above-described method for setting and removing the mold of the press device, the operation of stopping the slide at a predetermined position, for example, the position of the bottom dead center, is performed by manually operating the inching switch. Accurately stopping at the bottom dead center position depends on the operator's experience and feeling, and it is not easy to operate the inching switch that controls the inching device, for example, to stop sliding at the bottom dead center position The slide stops at a position before the bottom dead center position, or the overrun stops from the bottom dead center position, so the stop position is determined while repeating the operation of the inching switch, which requires a lot of adjustment time. This is an extremely difficult task, especially for an unskilled person, and is almost impossible.

On the other hand, since the setup procedure is also based on the operator's experience, even if there is a setup manual, etc., the execution is an operation based on the recognition and consciousness of the worker, so that the work procedure is incorrectly performed. If the slide is lowered at one time to the bottom dead center position in a state where preparations such as removal of the loader device (feed device) attached to the periphery of the mold are insufficient, not only the loader device but also the mold and the The press device may be damaged. In addition, even after the mold is removed or the mold is attached, if the slide is raised to the top dead center position in a state where the work is insufficient, the mold and the press device may be damaged.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention made in view of the above points is to provide a mold for a press machine which can reliably and quickly avoid the occurrence of damage to the mold and the press machine without relying on the experience and feeling of the operator. It is an object of the present invention to provide a desorption setup method and an apparatus therefor.

[0014]

According to the present invention, there is provided a method for setting and removing a mold in a press apparatus according to the present invention. The first stop position, which is a slide angle position, the second stop position, which is a bottom dead center position, and the third stop position, which is a predetermined slide angle position after reaching the bottom dead center, are sequentially stopped. In the state where the slide is stopped in, each mold demounting work is sequentially performed.

More specifically, with the slide stopped at the top dead center position, the attachment device of the press device is removed, and with the slide stopped at the first stop position, the removal state of the attachment device is confirmed. A state in which the safety has been confirmed, the upper die has been removed from the slide with the slide stopped at the second stop position, and placed on the lower die fixed to the bolster, and the slide has stopped at the third stop position After confirming the removal state of the upper mold, safety is confirmed, and the mold is removed by carrying out the lower mold and the upper mold together with the bolster from the press device with the slide stopped at the top dead center position.

Therefore, after the safety is checked before checking the detached state of the accessory device with the slide stopped at the first stop position, the slide is lowered to the second stop position, the upper die is removed from the slide, and the bolster is removed. When the upper die is lowered to the second stop position, damage to the upper die and the like by the accessory device is avoided, and the slide stops at the third stop position because the upper die is lowered to the second stop position. After confirming the removal of the upper mold, the slide is raised to the top dead center position, thereby preventing the slide from rising when the upper mold is insufficiently removed. The press device is prevented from being damaged.

Further, the lower die and the upper die together with the bolster are loaded into the press device with the slide stopped at the top dead center position, and the die loaded with the bolster with the slide stopped at the first stop position is confirmed. A state in which a pre-safety check is performed, the upper die mounted on the lower die fixed to the bolster is attached to the slide with the slide stopped at the second stop position, and the slide is stopped at the third stop position. After confirming the upper mold attached to the slide, perform a safety check,
Thereafter, by raising the slide to the top dead center position, after confirming the pre-safety of the mold carried in with the bolster with the slide stopped at the first stop position, the slider is lowered to the second stop position. The upper die is prevented from being damaged by the slider descending to the second stop position, and the slide is raised to the top dead center position after checking the mounting state of the upper die with the slide stopped at the third stop position. It is possible to prevent the slide from rising when the upper die is not sufficiently mounted, and to prevent damage to the die and the press device due to the insufficient mounting.

According to the present invention, there is provided a die removing and setting device for a press device according to the present invention, comprising: a slide driving mechanism for driving a slide up and down between a top dead center position and a bottom dead center position;
A slide angle detector for detecting a slide angle of the slide, a start switch, and a top die for performing a mold demounting and setting work based on a signal from the start switch and slide angle data from the slide angle detector. Control to sequentially stop at a point position, a first stop position which is a predetermined angular position before reaching the bottom dead center, a second stop position which is a bottom dead center position, and a third stop position which is a predetermined angle position after reaching the bottom dead center. And a device.

Therefore, based on the signal from the start switch and the slide angle data from the slide angle detector, the top dead center position, the first stop position, the second stop position, the third stop position, and the third stop position for performing the mold demounting setup operation. Since the slides are sequentially stopped at the stop position, the mold removal / removal setup work corresponding to each stop position can be performed, the mold removal / removal work can be performed efficiently and reliably, and damage to the mold and the press device can be avoided.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for setting and removing a mold in a press apparatus according to the present invention and an apparatus therefor will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an outline of the press apparatus 1.
And a mold detaching device 10.

The pressing device body 2 is supported by a moving bolster 6 on which the lower die 4 is mounted and fixed, and a frame or the like (not shown) facing the moving bolster 6 so as to be movable up and down. The slide 7 and the crankshaft 8 are supported via a slide rod (not shown). The connecting rod 9 connects the slide 7 and the crankshaft 8.

The mold removing device 10 includes a slide driving mechanism 11
, An encoder 18 serving as a slide angle detector, a data input device 21, a start switch 22, a selection switch 23, and a control device 30.

The slide drive mechanism 11 includes a slide drive motor 12, a clutch 13 interposed in a power transmission path from the drive shaft of the slide drive motor 12 to the crankshaft 8,
It is composed of a brake 14, a drive circuit 15 for a slide drive motor, a drive circuit 16 for a clutch, a drive circuit 17 for a brake, and the like.

The slide drive motor 12 is constituted by a motor capable of rotating at a very low speed, and rotates the crankshaft 8 of the press device main body 2 at a very low speed. The rotation of the crankshaft 8 causes the slide 7 to move through the connecting rod 9. The moving bolster 6 is driven to move up and down so as to come into contact with and separate from the moving bolster 6.

The encoder 18 calculates the rotation angle of the crankshaft 8 corresponding to the position at which the slide 7 moves up and down, that is, the rotation angle from the top dead center position T of the crankshaft 8 as shown in FIG. , And is constituted by, for example, a rotary encoder.

The data input device 21 is constituted by, for example, a personal computer or the like, and sets a slide stop position for stopping the slide 7 at a predetermined fixed position in accordance with a procedure for mold removal and setting, by an angle of the crankshaft 7. The data input unit is operated by an operator to store data of each stop position in the storage unit 31 of the control device 30.

The start switch 22 is a switch for outputting a start signal for instructing the control device 30 to start the control, and the selection switch 23 is a switch for selecting a mold detaching setup operation from a plurality of operations. It is.

The control device 30 comprises a storage section 31 and an arithmetic processing section 34. The storage section 31 is composed of a RAM 32 and a ROM 3.
The RAM 32 or the ROM 33 stores a control program based on, for example, mold release data input via the data input device 21.

The arithmetic processing unit 34 includes an input port 35, a CP
U36 and an output port 37.
6 receives the instruction signal from the selection switch 23,
M32 and the program in the ROM 33 are called, and the RAM 33 and the R
According to a program in the OM 32, an arithmetic process for the type change setup is executed.

The control program will be described with reference to the flowchart shown in FIG.

Start switch 2 in step S1
Top dead center position by start signal by ON operation of 2,
That is, the slider 7 gradually descends from the position where the slide angle is 0 °, and the first slide angle at the predetermined slide angle position before reaching the bottom dead center is reached.
When the slide angle from the stop position A, for example, the top dead center position T reaches a position lowered by about 120 °, the operation is stopped in step S2, and when the safety is confirmed in step 3S, the process proceeds to the next step S4.

In step S4, the start switch 22 is turned on again.
Is turned on, the slider 7 is further lowered by the start signal, and the second stop position B is set in step S5.
The slide angle reaches the bottom dead center position of 180 ° and stops, and the mold changing operation is performed in step S6. The slider 7 is raised by the ON operation of the start switch 22 in step S7, and in step S8, the slide angle α, which is the predetermined slide angle position after reaching the bottom dead center, is about 2
After stopping at the third stop position of 40 °, a subsequent safety check is performed in step S9, and the start switch 22 is turned on again in step S10, the slider 7 is further raised by the start signal and reaches the top dead center position T. Step S
It is programmed to stop at 11.

On the other hand, if a problem is confirmed in the previous safety check in step S3, the slide 7 is returned to the top dead center position T by the ON operation of the reverse rotation switch in step S12, and the operation from step S1 is repeated. It is. Further, when a failure is confirmed by the safety confirmation after step S9, the reverse rotation switch is turned ON in step S13 to return to the first stop position A and stop, and the operation from step S4 is repeated. I have.

Next, a method for changing the molds will be described in order with reference to FIG.

First, prior to the mold change, auxiliary equipment such as a loader is removed and prepared, and the CPU 36 selects a program from the RAM 32 and the ROM 33 based on the mold change setup data by turning on the selection switch 23.

When the start switch 22 is turned on in step S1, the CPU 36 sets the output port 37 in step Sa as shown in FIG.
A start signal is output to the drive circuit 15 for the slide drive motor via the control unit and the slide drive motor 12 is started at an extremely low speed. Further, the CPU 36 outputs a control signal to the clutch drive circuit 16 and the brake drive circuit 17 via the output port 37 to put the clutch 13 into a connected state and the brake 14 into a non-operating state.

As a result, the crankshaft 8 starts rotating at an extremely low speed by the slide drive motor 12, and the slide 7 connected to the crankshaft 8 via the connecting rod 9 moves from the top dead center position toward the moving bolster 6. At the same time, the encoder 18 detects the rotation angle from the top dead center position T of the crankshaft 8 as the slide angle α, as shown in the operation explanatory diagram of FIG. Output to the CPU 36 at all times.

The CPU 36 determines in step Sb that the RAM 3
2. The first stop position data is read from the ROM 33, and the first slide stop instruction angle is calculated from the first stop position data and a preset slide slip angle.

Here, the slide slip angle is
When the clutch 13 is disengaged and the brake 14 is actuated, the slide angle that changes during the slip that occurs until the brake 14 is stopped, and the slide stop instruction angle is the clutch drive circuit 16 for the clutch 13 and the brake 14.
And a slide angle indicating a timing at which a control signal for stopping the slide 7 is output to the brake drive circuit 17.

The CPU 26 determines whether or not the slide angle α sequentially read from the encoder 18 through the input port 35 matches the first slide stop instruction angle, and determines whether the slide angle α is the first slide stop instruction. If it is determined that the angle matches the angle, the output port 37 is determined in step Sc.
A stop signal is output to the drive circuit 15 for the slide drive motor via the control unit and the slide drive motor 12 is stopped. Further, the CPU 36 outputs a control signal to the clutch drive circuit 16 and the brake drive circuit 17 via the output port 37 to put the clutch 13 into a disengaged state and the brake 14 into an activated state. As a result, the crankshaft 8 is braked, and the slide 7 stops after slipping by the slide slip angle.

The stop position of the slide 7, that is, whether the slide angle α detected by the encoder 18 in the state where the slide 7 is stopped is within the preset first stop position A of 120 ° and the allowable range before and after it. It is determined in step Sd whether it is not or not, and if it is within the allowable range, the process proceeds to the next step S2.

If it is out of the allowable range, step Sd
When the determination is made in step S, the CPU 26 outputs a reverse rotation signal to the slide drive motor drive circuit 15 via the output port 37 to cause the slide drive motor 12 to reversely rotate, and drives the clutch drive via the output port 37. A control signal is output to the circuit 16 and the brake drive circuit 17 to put the clutch 13 into the engaged state, the brake 14 into the actuated state, and the slide 7 connected to the crankshaft 8 to return to the top dead center position T. By the ON operation of the start switch 22 by step 1, the operation of the above-described steps Sa to Sd, which shows a subroutine in FIG. 3, is repeated.

In step 3, the lower mold 4 and the upper mold 5
A pre-safety check is performed to determine whether ancillary equipment such as a loader that affects the removal of the mold 3 is securely removed, and when it is determined that the ancillary equipment is securely removed, the process proceeds to the next step S4. Transition.

On the other hand, when it is determined in step S3 that the removal of the incidental equipment is insufficient, the process proceeds to step S12, and the reverse switch is turned on.

The signal from the reversing switch causes the CP
U26 outputs a reverse rotation signal to the drive circuit 15 for the slide drive motor via the output port 37, and
2 is reversed, and a control signal is output to the clutch drive circuit 16 and the brake drive circuit 17 through the output port 37 to connect the clutch 13 to the connected state and the brake 14 to the operated state to be connected to the crankshaft 8. After returning the slide 7 to the top dead center position T and removing the auxiliary equipment, the ON operation of the start switch 22 in step S1 is executed again.

In step S4, the start switch 2
2 is turned ON. By the ON operation of the start switch 22, the CPU 36 outputs a start signal to the slide drive motor drive circuit 15 via the output port 37 at step Sa according to the subroutine in FIG. Start up and CPU3
Reference numeral 6 outputs a control signal to the clutch drive circuit 16 and the brake drive circuit 17 via the output port 37 to bring the clutch 13 into a connected state and the brake 14 into a non-operating state.

As a result, the crankshaft 8 starts rotating at a very low speed by the slide drive motor 12, and the slide 7 starts to descend at a very low speed from the first stop position A toward the moving bolster 6, while the encoder 18 4 detects the rotation angle of the crankshaft 8 as a slide angle α as shown in FIG.
Always output to PU36.

The CPU 36 determines in step Sb that the RAM 3
2. The second stop position data is read from the ROM 33, and a second slide stop instruction angle is calculated from the second stop position data and a preset slide slip angle.

The CPU 26 determines whether the slide angle α sequentially read from the encoder 18 via the input port 35 matches the second slide stop instruction angle, and determines whether the slide angle α is the second slide stop instruction. If it is determined that the angle matches the angle, the output port 37 is determined in step Sc.
A stop signal is output to the drive circuit 15 for the slide drive motor via the control unit and the slide drive motor 12 is stopped. Further, the CPU 36 outputs a control signal to the clutch drive circuit 16 and the brake drive circuit 17 through the output port 37 to put the clutch 13 into a disengaged state, put the brake 14 into an actuated state, brake the brake on the crankshaft 8, 7 is step S5 after slipping by the slide slip angle.
Stop at

The stop position of the slide 7, that is, whether or not the slide angle α detected by the encoder 18 when the slide 7 is stopped is 180 ° which is the stop position at the second stop position B set in advance. The judgment is made in step Sd, and if it is within the allowable range, the process proceeds to the next step S6.

If it is out of the allowable range, step Sd
When the determination is made in step S, the CPU 26 outputs a reverse rotation signal to the slide drive motor drive circuit 15 via the output port 37 to cause the slide drive motor 12 to reversely rotate, and drives the clutch drive via the output port 37. A control signal is output to the circuit 16 and the brake drive circuit 17 to put the clutch 13 into the engaged state, the brake 14 into the actuated state, and the slide 7 connected to the crankshaft 8 to return to the top dead center position T. By the ON operation of the start switch 22 by step 4, the operations of the above-mentioned steps Sa to Sd showing the subroutine in FIG. 3 are repeated until the step angle α of step Sd becomes within the allowable range.

Then, in step S6, the upper die 5 is placed on the lower die 4 disposed on the moving bolster 6 by unclamping the fastening means (not shown) for attaching the upper die 5 to the slider 7. Place.

In step 7S, when the start switch 22 is turned on, the CPU 36 outputs a start signal to the drive circuit 15 for the slide drive motor and the drive circuit 16 for the clutch and the drive circuit for the brake in accordance with the subroutine of FIG. A control signal is output to the circuit 17, whereby the slide 7 starts rising at a very low speed from the second stop position B so as to be separated from the moving bolster 6, while the encoder 18 detects the slide angle α and detects the input port. The signal is always output to the CPU 36 via 35.

The CPU 36 reads the third stop position data from the RAM 32 and the ROM 33, and calculates a third slide stop instruction angle from the third stop position data and a preset slide slip angle.

The CPU 26 has an input port 35
And outputs a stop signal to the slide drive motor drive circuit 15 through the output port 37 when the slide angle α from the encoder 18 reaches a position that matches the third slide stop instruction angle, A control signal is output to the clutch drive circuit 16 and the brake drive circuit 17 so that the slide 7 slips by the slide slip angle and then stops at the slide 7, that is, the slide angle α.
Is about 240 °, which is the third stop position C, in step S8.
Stop as.

In the next step S9, the slide 7
After the removal of the upper die 6 such as whether or not the upper die 5 has been securely unclamped, the safety is confirmed. If it is determined that the upper die 5 has been properly removed from the slide 7, the next step S10 Move to

If it is determined in step S9 that there is a problem such as insufficient removal of the upper mold from the slide 7, the process proceeds to step S13 and the reverse switch is turned off.
N. The signal from the reverse switch causes the CPU 3
6 outputs a reverse rotation signal to the slide drive motor drive circuit 15 through the output port 37 to reverse the slide drive motor 12 and connects the clutch 13 to the clutch drive circuit 16 and the brake drive circuit 17 by a control signal. Then, the brake 14 is operated, the slide 7 connected to the crankshaft 8 is returned to the second stop position B, and the steps from step S4 are repeated to appropriately remove the upper die 5 from the slide 7, The upper die 5 is placed down on the lower die 4 provided on the moving bolster 6.

In step S10, when the start switch 22 is turned on again, the CPU 36 outputs a start signal to the slide drive motor drive circuit 15 to start the slide drive motor 12, and at the same time, drives the clutch drive circuit 16 and the brake drive circuit. A control signal is output to the circuit 17 to bring the clutch 13 into the engaged state and the brake 14 into the inoperative state.

As a result, the crankshaft 8 starts rotating by the slide drive motor 12 again, and the slide 7 separated from the upper die 5 starts to rise from the third stop position C so as to be separated from the moving bolster 6. , The encoder 18 detects the slide angle α and constantly outputs it to the CPU 36 via the input port 35, while the CPU 36
M32, the top dead center stop position data is read from the ROM 33, and a top dead center stop instruction angle is calculated from the top dead center stop position data and a preset slide slip angle.

The CPU 36 reads the slide angle α through the input port 35, and when the slide angle α from the encoder 18 reaches the top dead center slide stop instruction angle, the slide drive motor through the output port 37 is used. A stop signal is output to the drive circuit 15, and the slide drive motor 1
2 is stopped, and the CPU 36 controls the clutch drive circuit 16 and the brake drive circuit 17 through the output port 37.
To output the control signal to put the clutch 13 into the disconnected state and the brake 14 into the operating state. Thus, the slide 7 slips by the slide slip angle and then stops at step T8 at the top dead center position T, that is, the position where the slide angle is 0 °.

At this point, the lower die 4, the upper die 5 and the like on the moving bolster 6 are carried out together with the moving bolster 6 from the press device 1 to complete the work of removing the die 3 and the like.

Next, the work of attaching the mold 3 and the like will be described.
In the mounting operation of the mold 3, the contents of steps S3, S6, and S9 are different in each of the above steps, and the other steps are substantially the same. Therefore, detailed description is omitted, and the flowchart shown in FIG. 2 is referred to. I will explain.

First, when the slide angle is 0 °, that is, when the slide 7 is stopped at the top dead center position, the lower mold 4 and the upper mold 5 to be mounted and mounted on the moving bolster 6 are moved to the moving bolster 6. Together with the press device 1 for preparation.

Then, in step S1, the start switch 22 is turned on to start the slide drive motor 12 according to the control signal from the CPU 36, and the clutch 1
3 is connected, the brake 14 is inactivated, and the slide 7 starts to descend at a very low speed from the top dead center position T toward the moving bolster 6.

The CPU 36 calculates a first slide stop instruction angle from the first stop position data from the RAM 32 and the ROM 33 and a preset slide slip angle, and the CPU 26 operates the encoder 18 which is sequentially read.
When the slide angle .alpha. Reaches the first slide stop command angle, the slide drive motor 12 is stopped, the clutch 13 is turned off, the brake 14 is turned on, and the slide 7 is slipped by the slide slip angle. Stop at the first stop position A.

In the following step S3, slide 7
Is checked before the slide 7 is lowered to the second stop position B, for example, the clearance between the slide 7 and the mold 3 is checked. When safety is confirmed, the process proceeds to the next step S4. If it is not sufficient, the process proceeds to step S12, where the slide 7 is returned to the top dead center position T by the ON operation of the reverse rotation switch and adjusted as described above, and the start switch 22 in step S1 is again executed.
Is executed again.

In step S4, when the start switch 22 is turned on, the CPU 36 starts the slide drive motor 12 and the slide 7 descends from the first stop position A toward the moving bolster 6, while the encoder 18 sets the slide angle. α is detected and output to the CPU 36, and the CPU 36 reads the second stop position data from the RAM 32 and the ROM 33 as described above, and calculates a second slide stop instruction angle from the second stop position data and the slide slip angle.

Then, the CPU 26 stops the slide drive motor 12 reaching the position where the slide angle α coincides with the second slide stop instruction angle in accordance with the subroutine of FIG. 3 as described above, and after the slide 7 slips by the slide slip angle, The slide 7 stops at step S5 at the bottom dead center position where the slide angle as the second stop position B is 180 °.

In the next step S6, the upper die 5 on the lower die 4 provided on the moving bolster 6 is attached to the slide 7 by fastening the upper die 5 to the slider 7.

Then, in step S7, when the start switch 22 is turned on, the start signal shown in FIG.
In the same manner as described above, the slide angle is read into the CPU 36 via the input port 35 according to the subroutine shown in FIG.
When the slide angle α from the encoder 18 reaches a position corresponding to the third slide stop instruction angle, the slide drive motor 12 is stopped, the clutch 13 is disengaged, and the brake 14 is operated, whereby the slide 7 After slipping by the slip angle, the stop position of the slide 7, that is, the slide angle of the third stop position C is 240
In the vicinity of °, the operation is stopped as step S8.

In the next step S9, the slide 7
After the upper die 6 is attached, such as whether or not the upper die 5 has been securely clamped, a safety check is performed after the upper die 6 is attached. When it is determined that the upper die 5 is properly attached to the slide 7, the process proceeds to the next step 10. I do.

If it is determined in step S9 that the upper die 5 is not sufficiently attached to the slide 7, the process proceeds to step 13 as described above to turn on the reverse switch, and the CPU 36 controls the slide by the signal from the reverse switch. 7 is returned to the second stop position B, and the steps from step 4 are repeated to securely attach the upper die 5 to the slide 7.

Then, in step S10, the start switch 22 is turned on again, and the CPU 36 returns to FIG.
The slide drive motor 12 is started in accordance with the subroutine of FIG.
Is inactive, the slide 7 separated from the upper die 5 starts to rise from the third stop position C so as to be separated from the moving bolster 6, while the encoder 18 moves from the top dead center position T of the crankshaft 8. CP by detecting the slide angle α
Output to U36.

On the other hand, the CPU 36, after slipping the slide 7 by the slide slip angle, stops at step T11 at the top dead center position T, that is, the position where the slide angle is 0 °, and completes the mounting of the mold 3 and the like. The installation and removal of the mold is completed by installing the auxiliary equipment such as the rear loader.

According to the present embodiment described above, after the safety is checked before checking the detached state of the accessory device with the slide 7 stopped at the first stop position A, the slide 7 is moved to the bottom dead center position. Since the upper die 5 is moved down to a certain second stop position B and the upper die 5 is removed from the slide 7 and placed on the lower die 4 fixed to the moving bolster 6, the upper die 5 is moved to the second stop position B.
At the time of lowering to the stop position B, damage to the upper die 4 due to contact with the auxiliary device is avoided, and the upper die 5 is removed in a state where the slide 7 that has risen from the second stop position B is stopped at the third stop position C. After checking the safety, the slide 7 is raised to the top dead center position T, so that the slide 7 is prevented from being lifted in a state where the upper die 5 is not sufficiently removed, and the upper die 5 is not removed. Damage to the upper die 5 and the press device caused by the occurrence is sufficiently prevented.

Further, after confirming the safety before checking the mold 3 carried together with the moving bolster 6 with the slide 7 stopped at the first stop position A, the slider 7 is lowered to the second stop position B and When the slider 7 is moved down to the second stop position B since the mold 4 is attached, damage to the upper mold 5 due to the descending slider 7 is avoided, and the upper mold 4 is stopped in a state where the slide 7 is stopped at the third stop position C. After confirming the mounting state of the upper die 5, the slide 7 is raised to the top dead center position T, so that the slide 7 is not lifted in a state where the upper die 4 is not sufficiently mounted, and the upper die 5 is not sufficiently mounted. Upper mold 5
And the press device is prevented from being damaged, and the slide 7 is moved to each of the stop positions T, A, B, and C according to a preset program.
, The setup work required at each of the stop positions T, A, B, and C can be sequentially performed, and the mold removal and setup work can be reliably performed in a short time without depending on the experience and feeling of the operator.

In the above-described embodiment, the slide angle α between the first stop position A and the third stop position C for confirming safety is set.
Are set to 120 ° and 240 °, respectively, but other slide angles may be set according to the press device, and the present invention is not limited to the above-described embodiment and does not depart from the gist of the invention. Can be changed by

[0079]

According to the above-described method for setting and removing a mold in a press apparatus according to the present invention and the apparatus therefor, a slide stop position required for the mold / removal setup operation of the press apparatus is set in advance, and Since the press machine is programmed according to the procedure, it is possible to reliably stop the slide at a predetermined position automatically by executing the mold removal / setup work according to this program, and to confirm during the setup. The slide is automatically stopped in response to the work to be performed, so that damage to the mold and the press device due to omission of confirmation stop, etc., is reliably prevented, and the slide can be shortened without relying on the operator's experience and feeling. The present invention has an effect peculiar to the present invention, for example, the mold demounting setup can be surely performed in a long time, and greatly contributes to the manufacturing industry field by the press device.

[Brief description of the drawings]

FIG. 1 is a block diagram of a press apparatus for explaining an embodiment of a method for setting and removing a mold in a press apparatus according to the present invention and an apparatus therefor.

FIG. 2 is a flowchart illustrating the outline of a mold attaching / detaching method.

FIG. 3 is a subroutine for explaining an outline of a mold attaching / detaching method.

FIG. 4 is an operation explanatory diagram for explaining an outline of a method for setting and removing a mold.

FIG. 5 is an explanatory view showing an outline of a method of setting and removing a mold of a conventional press device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 press device 3 mold 4 lower mold 5 upper mold 6 moving bolster 7 slide 10 mold attaching / detaching device 11 slide drive mechanism 18 encoder 22 start switch 30 controller 31 storage unit 34 arithmetic processing unit A first stop position B second stop position C Third stop position T Top dead center position α Slide angle

Claims (8)

[Claims] 1. A bolster for mounting and fixing a lower mold, a top dead center position having a slide angle of 0 ° and a bottom dead center position having a slide angle of 180 ° so as to be opposed to and separated from the bolster. In a method for setting and removing a die of a press device, the slide device includes a control device for setting and storing a slide stop instruction angle at which a slide is stopped based on input data. The slide is moved to the top dead center position, the first stop position is a predetermined slide angle position before reaching the bottom dead center, the second stop position is the bottom dead center position, and the bottom dead center is reached based on the mold detachment data input. A step of sequentially stopping at a third stop position, which is a predetermined slide angle position, and sequentially performing each mold demounting and setting operation in the stopped state of the slide at each of the stop positions. 2. A safety confirmation is made before removing the accessory device of the press device with the slide stopped at the top dead center position, and confirming the removal condition of the accessory device with the slide stopped at the first stop position. When the slide is stopped at the second stop position, the upper die is removed from the slide and placed on the lower die on the bolster, and the slide is stopped at the third stop position. 2. The press according to claim 1, wherein the lower die and the upper die are carried out together with the bolster from the press device with the slide stopped at the top dead center position after confirming the removal state of the upper die. A method for setting and removing a mold in a device. 3. The lower die and the upper die placed on the lower die together with the bolster are sequentially loaded into the press device with the slide stopped at the top dead center position, and the slide stops at the first stop position. In a state where the slide is stopped at the second stop position, the upper die placed on the lower die on the bolster is attached to the slide, and a safety check is performed before confirming the die carried together with the bolster in the above state. The method according to claim 1, wherein after the slide is stopped at the third stop position, a safety check is performed after checking an attachment state of the upper die attached to the slide, and then the slide is raised to the top dead center position. A method for removing and setting a mold in the press apparatus described in the above. 4. When the slide is stopped at the first stop position and there is a problem as a result of the safety check, the slide is returned to the top dead center position, and the slide is stopped at the third stop position. 4. The method according to claim 2, wherein the slide is returned to the second stop position when there is a defect as a result of the safety check. 5. The first stop position has a slide angle of about 120.
5. The method of setting and removing a mold in a press apparatus according to claim 1, wherein 6. The third stop position has a slide angle of about 240.
6. The method of setting and removing a mold in a press apparatus according to claim 1, wherein 7. A lower mold mounted and fixed on a bolster, a top dead center position having a slide angle of 0 ° and a bottom dead center position having a slide angle of 180 so as to be opposed to and separated from the bolster. In a mold demounting and setting device of a press device for press-working a workpiece in cooperation with an upper die supported by a slide that moves up and down, the slide is moved between an upper dead center position and a lower dead center position. A slide drive mechanism for driving up and down, a slide angle detector for detecting a slide angle, a start switch, and a stage for detaching the slide based on a start signal from the start switch and slide angle data from the slide angle detector. A first stop position which is a predetermined slide angle position before reaching a top dead center position and a bottom dead center for a picking operation, a second stop position which is a bottom dead center position, and a predetermined slide angle after reaching a bottom dead center Type desorption stage winding device of a press apparatus characterized by a control device for sequentially stopped in the third and the stop position is location. 8. A starter switch comprising: a storage unit in which the controller stores in advance a mold detachment data for stopping at a top dead center position, a first stop position, a second stop position, and a third stop position; The slide sequentially moves to the top dead center position, the first stop position, the second stop position, and the third stop position based on the signal of, the slide angle data from the slide angle detector, and the mold removal data from the storage unit. 8. The apparatus according to claim 7, further comprising an arithmetic processing unit for controlling the slide drive mechanism so as to stop the slide drive mechanism.