JPH0327292B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided with a metal plate stamping device,
The present invention relates to a feeding and discharging device for feeding and discharging a metal plate to be processed into a punching device.

[Conventional technology]

In a metal plate stamping machine, each metal plate to be processed is fed to the stamping machine, and each time the stamping process is completed, the processed metal plate is taken out from the stamping machine and then stamped. A new workpiece metal sheet to be stamped must be fed to the stamping device.

Although this kind of loading and unloading work of the metal plate to be processed can be done manually, such work is not only extremely dangerous but also Due to poor work efficiency,
A mechanical feed/discharge device, such as a robot hand with a metal plate gripping device, is installed in the punching device,
This supply/discharge work is mechanically automated.

However, with conventional equipment that simply replaces manual work with robot hands, once the stamping work on a single workpiece metal plate is completed and the space between the pair of heads of the press is opened, that is, the workpiece metal Each time the plate supply/discharge space was opened, one robot hand was inserted into the space and the stamped metal plate on the lower die was held by the robot hand. After taking it out of the space, another robot hand is moved into the space in place of this robot hand, and the robot hand is held in advance by the robot hand. A new unprocessed metal sheet to be processed is fed into the space onto the lower die.

[Problem that the invention seeks to solve]

However, in the conventional device, in which a pair of robot hands like this are taken in and out of one space alternately, the discharge of processed metal plates and the supply of unprocessed metal plates are performed alternately.
There is a problem in that a new metal plate cannot be supplied to the space until the stamped metal plate is completely discharged from the space.

This invention solves the above-mentioned problems, and at the same time the pair of heads of the stamping device are opened, and at the same time, the stamped metal plate is removed from the space in the supply/discharge space for the metal plate to be machined. It is an object of the present invention to provide an apparatus for supplying and discharging a metal plate to be processed, which allows a discharge operation and an operation of supplying an unprocessed metal plate to the space to be performed simultaneously.

[Means for solving problems]

This invention, which solves the above problem, has a pair of die mounting members attached to the head of a press whose die mounting surfaces are opposed to each other in the vertical direction.
When this press is opened, a space is provided for supplying and discharging the metal plate to be processed between the dies respectively attached to the die attaching members. A suction cup is installed at an appropriate location on the lower surface to attract the metal plate placed on the lower die, and on one side of the press there is a supply/discharge space for the metal plate to be processed. A material supply/discharge hand that can be freely inserted and withdrawn toward and from It constitutes a receiving part when a plate falls, and a suction cup for sucking and holding the metal plate to be processed is attached to the lower surface thereof, and each of the above suction cups is connected to and disconnected from a vacuum source at will. A supply/discharge device for a metal plate to be machined in a punching device is characterized by the following.

[Effect]

The above technical means according to the invention works as follows.

In other words, on the bottom surface of the upper die mounting member,
A suction cup that can be placed in an appropriate position to attract the lower metal plate is attached, and this suction cup is connected to a vacuum source so that it can be connected and disconnected freely, so that the upper and lower pairs of heads are connected to each other. While the die mounting members are closed, at least before the press finishes its stamping operation and the pair of upper and lower die mounting members are opened, the upper surface of the stamped metal plate is located between the die mounting members. If this suction cup is used to attract the metal plate, the stamped metal plate will become
When the heads of the press are opened, it is held by the upper die mounting member and suspended above the opened supply/discharge space for the metal plate to be processed.

Therefore, in this state, the material supply/discharge hand provided on one side of the press is inserted into the supply/discharge space of the metal plate to be processed, and then the stamped metal plate is suspended by the suction cup. If the state is released, the metal plate will fall onto this material supply/discharge hand and be received by the upper surface of the material supply/discharge hand.
When this material supply/discharge hand is pulled out of the supply/discharge space of the metal plate to be processed, the stamped metal plate will be
The material is taken out of the space while remaining on the material supply/discharge hand.

In addition, a suction cup for suctioning and holding the metal plate to be processed is attached to the lower surface of this material supply/discharge hand, and this suction cup is also connected to a vacuum source so that it can be moved toward and away from the material supply/discharge hand. When the workpiece metal plate to be stamped next is held in the suction cup in advance before being inserted into the supply/discharge space of the metal plate to be processed, the material supply/discharge hand is inserted into the space. When inserted, by releasing the holding force by the suction cup, the metal plate to be processed can be fed onto the die attached to the lower die attachment member.

Therefore, according to the supply/discharge device of the present invention, the workpiece metal plate can be moved into the supply/discharge space by one operation of putting one material supply/discharge hand into and out of the supply/discharge space for the workpiece metal plate. It is possible to carry out supply/discharge operations.

〔Example〕

One embodiment will be described with reference to FIGS. 1 to 4. This embodiment uses a die-cutting device (numbering device) for stamping a number on the license plate of a car, using a feed/discharge device for a metal plate to be processed according to the present invention. ), in the figure, 1 is a hydraulic press, and 2 is a feed/discharge device for a metal plate to be processed according to the present invention, which is disposed on the right side of the hydraulic press.

First, to explain the outline of the hydraulic press 1, a pair of upper and lower heads 7 and 8 of the hydraulic press 1 have die mounting surfaces 9a and 10a facing each other, respectively, and a pair of upper and lower die mounting bases 9 and 10. is fixedly installed. Six guide rails 12 each having protrusions 11 in the front-rear direction are protruded from the die mounting surfaces 9a and 10a of each die mounting base 9 and 10, and between each guide rail 12 and 12,
Number dice 14 (male type) or 14' (female type), which are frequently replaced and have concave grooves 13 on both sides.
When inserted from the front and back direction, the concave groove 1 is formed in the protrusion 11.
3, the numerical dice 14, 14' can be mounted on the die mounting bases 9, 10 so as not to be able to move up and down. Further, between each guide rail 12, 12, on which the numerical dice 14, 14' are attached as described above, the tips thereof are fixed to the die mounting surface 9a of the die mounting base 9, 10 by the action of the air cylinder 15, respectively. A retractable locking pin 16 is provided protruding from 10a, and each numerical die 14, 14' is connected to each guide rail 12, 12.
After inserting a predetermined amount between them, number dice 14, 14'
This locking pin 16 is inserted into the hole 17 formed on the back side of the
When engaged, the numerical dice 14, 14' are locked to the die mounts 9, 10 so that they cannot move back and forth.

A pair of die mounting frames 19 and 20 are disposed vertically between the pair of die mounting bases 9 and 10. The upper die mounting frame 19 is a die mounting base 9.
3, each having a long hole 21, is arranged and fixed at the front and back of the right side of the die mount 9 and at the center of the left side of the die mount 9.
The upper The die mounting frame 20 is suspended from the upper die mounting frame 9 so as to be freely openable and closable between the die mounting frame 19 and the lower die mounting frame 20. Four connecting plates 25 each having a long hole 24 are fixed to each other, and four connecting plates 25 are inserted through the long holes 24 of each connecting plate 25 and fixed to the front or rear surface of the die mounting frame 20. It is suspended and supported by the upper die mounting frame 19 via a loose connection means consisting of a pin 26 so as to be freely openable and closable between the upper die mounting frame 19 and the upper die mounting frame 19 .
In this way, the pair of die mounting frames 19, 20
When the pair of die mounting bases 9 and 10 are opened at a predetermined distance, a space 28 is provided between both die mounting frames 19 and 20 for supplying and discharging the metal plate 27 to be processed to and from the die mounting frame 20, Between the upper die mounting base 9 and the upper die mounting frame 19 and between the lower die mounting base 10 and the lower die mounting frame 20,
The number dice 14 and 14' are respectively placed in the hydraulic press 1.
and feed it from the front of each guide rail 1.
Dice feeding and discharging spaces 29 and 30 are provided between the two and 12 and for discharging the dice to the rear of the hydraulic press 1. In addition, each die mounting frame 19, 20 is provided with code number stamping dies 31, 3, which are not frequently replaced.
1', die mounting recesses 34, 34' for removably mounting the hiragana symbol stamping dies 32, 32' and the hyphen stamping dies 33, 33', respectively;
35, 35' and 36, 36' and the pair of heads 7, 8 of the hydraulic press 1 to close the space between each die mounting frame 19, 20 and the die mounting base 9, 10, the die mounting base 9 , 10 and this guide rail 12,
A window hole 37 is formed between the die mounts 9 and 12 for passing the numerical dice 14 and 14' attached to the die mounts 9 and 10.

Further, on the opposing surfaces of the pair of die mounting frames 19 and 20, a protrusion 39 and a concave groove 39' are provided for driving out a frame-shaped reinforcing protrusion along the peripheral edge of the metal plate 27 to be processed. is formed at an appropriate position on the upper surface of the lower die mounting frame 20 to attach the metal plate 27 to be processed.
Six positioning pins 41 are protruded and arranged at appropriate positions on the lower surface of the upper die mounting frame 19 to form a hole 42 into which the pins 41 are inserted and another recess 43. 43 (3 places), each processed metal plate 27
A suction cup 44 is provided to attract and hold the material.

In this embodiment, the pair of upper and lower die mounting members are attached to the pair of upper and lower die mounting bases 9 and 10.
It also consists of mounting frames 19 and 20,
Suction cup 44 attached to the upper die attachment member
The die mounting frame 19 is placed at a proper place on the lower surface of the upper die mounting frame 19, that is, as shown in FIG.
These suction cups 44 are arranged in respective recesses 43 formed on the lower surface of the It is connected to a switching valve 53 which is a device.

Next, the details of the feeding and discharging device 2 for the metal plate to be processed, which is disposed outside the hydraulic press 1, will be explained with reference to the figure.On the right side of the hydraulic press 1, there is a Two guide rails 81 are provided in the left and right direction, and the guide rails 81 are provided with guide rails 81 for loading and unloading the workpiece metal plate from the right side of the hydraulic press 1 toward the supply/discharge space 28 of the hydraulic press 1. A flexible material supply/discharge hand 82 is attached to its base 82.
A is slidably supported on a cantilever. The material supply/discharge hand 82 also includes a group of rollers 84, 84, . Suction cups 85, 85, . , 2, the unprocessed metal plate 27 that has been conveyed to the lower side by the belt conveyor 86 disposed below is attached to the machine frame 95 of the belt conveyor 86. When the air cylinder 87 is used to lift it up, the suction cup 85 is connected to a vacuum source so that the unprocessed metal plate 27 can be suctioned and held on the underside of the suction cup 85. Then, when the material supply/discharge hand 82 is inserted into the open material supply/discharge space 28 of the hydraulic press 1 (FIG. 4) and the above-mentioned holding state by the suction cup 85 is released, the unprocessed metal plate 2
The pressed metal plate 27, which has been previously suctioned and held on the lower surface of the die mounting frame 19 by the suction cup 44, can be fed by falling onto the upper surface of the die mounting frame 20 using the material supply/discharge hand. When the material is dropped onto the material supply/discharge hand 82 (Fig. 4),
It can be placed on the second roller 84 and taken out from the hydraulic press 1 together with the material supply/discharge hand 82. Note that rollers 88, 88 supported by another machine frame 96 are located at the front side in the take-out direction.
...If the group is arranged, the metal plate 27 taken out
The material supply/discharge hand 8
2 onto the rollers 88, 88... group.

In the above embodiment, when the suspended state of the stamped metal plate 27 by the suction cup 44 is released, the stamped metal plate 27 falling onto the material supply/discharge hand 82 is suspended. Although an example has been shown in which the falling receiving section for receiving the material is configured with a group of rollers 84, 84, etc. disposed on the upper surface of the material supply/discharge hand 82, in other embodiments, this The falling metal plate receiving section may be constructed by placing a flat sliding plate (not shown) on the upper surface of the material supply/discharge hand 82 instead of the roller groups 84, 84, . . . . In this case as well, when the material supply/discharge hand 82 retreats, the metal plate 27 on the sliding plate is caused to move backward from above the material supply/discharge hand 82 due to its inertia. It can be automatically discharged in the direction (to the right).

〔Effect of the invention〕

The feed/discharge device for a metal plate to be processed according to the present invention causes a suction cup attached to an upper die mounting member to act as an adsorbent on a stamped metal plate while the space between the pair of heads is closed. By doing so, when the pair of heads is opened and the material supply/discharge hand holding the workpiece metal plate to be stamped next on its underside is inserted into the supply/discharge space of the workpiece metal plate,
The processed metal plate is dropped onto the material supply/discharge hand, and when the material supply/discharge hand finishes supplying the workpiece metal plate onto the lower die and exits the space, the processed metal plate is dropped onto the material supply/discharge hand. A metal plate can be placed on it and taken out of the space. In other words, even when the material supply/discharge hand enters and exits the workpiece metal plate supply/discharge space once, it is possible to simultaneously perform the supply/discharge operations for a pair of old and new workpiece metal plates. .
Therefore, according to the apparatus of the present invention, the time required for loading and unloading workpiece metal plates can be halved compared to conventional apparatuses.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the feeding and discharging device for the metal plate to be processed in the punching device according to the present invention. Figure 1 is a front view of the main parts, and Figure 2 is a lower A plan view showing the die mounting member and the material supply/discharge hand, Figure 3 is a bottom view showing the upper die mounting member, and Figure 4 shows the material supply/discharge hand inserted into the supply/discharge space of the metal plate to be processed. FIG. 5 is a vertical left side view showing a state in which the vacuum pump is in a closed state, and FIG. 5 is a diagram of a vacuum supply/discharge circuit connected to each suction cup. 1...Hydraulic press, 2...Workpiece metal plate supply/discharge device, 7, 8...Head, 9, 10...Dice mounting base (dice mounting member), 19, 20...Dice mounting frame (dice mounting member), 14, 14', 31,
31', 32, 32', 33, 33'...Dice,
27... Metal plate to be processed, 28... Space for feeding and discharging the metal plate to be processed, 44... Suction cup, 82... Material feeding/discharging hand, 84... Roller (receiving part when the metal plate falls), 85... ...Sucker.

Claims (1)

[Claims] 1 A pair of die mounting members are attached to the heads of a press with their die mounting surfaces facing each other, and the press is opened. In a metal plate stamping device, in which a space is provided for supplying and discharging the metal plate to be processed between the dies respectively attached to the die attaching member, a suitable place on the lower surface of the upper die attaching member is provided. A suction cup is attached to one side of the press so that the metal plate to be processed can be taken in and out of the supply/discharge space. A flexible material supply/discharge hand is provided, and this material supply/discharge hand holds the upper surface of the part of the metal plate to be inserted into the supply/discharge space so that when the metal plate, which is suctioned and held by the suction cup, falls, It constitutes a receiving part, and a suction cup for adsorbing and holding a metal plate to be processed is attached to the lower surface of the receiving part, and each of the suction cups is connected to and disconnected from a vacuum source at will. A device for supplying and discharging workpiece metal plates in stamping equipment. 2. The material supply/discharge hand is slidably cantilevered at its base by a guide rail suspended horizontally on the machine frame in the lateral direction of the press, and the tip end portion thereof is attached to the workpiece metal plate. A feeding/discharging device for a metal plate to be processed in a stamping device according to claim 1, which is capable of being moved in and out of the feeding/discharging space. 3. The metal plate to be processed in the stamping device according to claim 1 or 2, wherein the metal plate falling receiving part is a group of rollers disposed on the upper surface of the material supply/discharge hand. Supply/discharge device. 4. Feeding of the metal plate to be processed in the punching device according to claim 1 or 2, wherein the receiving part when the metal plate falls is a sliding plate installed on the upper surface of the material supply/discharge hand. Exhaust device.