JPS637861B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material supply device that transfers press material between a pair of press machines, and particularly to one configured to transfer the press material using a suction device. As this type of device, for example, Japanese Patent Application Laid-Open No. 55-30321
As disclosed in the above issue, there is a device that consists of a pair of suction devices and a movable table installed between the suction devices.
The press material taken out by the suction device is first placed on a moving table and conveyed to the second suction device side, and then this press material is suctioned by the second suction device and supplied to the second press machine.

However, in conventional devices of this kind, each of the pair of suction devices is operated independently, so each suction device is required to have a detection means and a control means to operate it in relation to the press material. In addition, each suction device requires a driving means, which makes the structure of the entire device complicated and expensive.

The present invention provides a material supply device that can solve these problems.

The apparatus of the present invention will be explained below with reference to the accompanying drawings. FIG. 1 is a perspective view of the apparatus, 1 is a transfer system,
2 and 2' are first and second suction devices, 3 is a movable platform,
Reference numerals 4 and 5 denote molds of the press machine as fixed mold mounting tables, respectively. 4 is provided in the preceding press machine, and 5 is provided in the succeeding press machine.

The transfer system 1 includes an endless strap 10, such as an endless belt or an endless chain, and an endless strap 10, such as an endless belt or an endless chain, having a pair of strap surface parts 11 and 11' that face each other in parallel and move in opposite directions through a circular motion. one driving means, for example, a reversible motor 12 for reciprocating the reciprocating movement of the endless cord 1;
Drive pulley 14 and guide pulley 1 supporting 0
4'.

Further, one guide member 13 may be provided in common to the strap surface portions 11, 11', but in the embodiment, one guide member 13 is provided separately for each strap surface portion 11, 11'.

Further, the drive motor 12 causes the strap surface portions 11, 11' to reciprocate along the material transfer path f in response to the raising and lowering movement of the ram of the press machine by a control circuit (not shown).

The first and second suction devices 2 and 2' are fixed to the strap surface parts 11 and 11', respectively, and are configured to be moved by the movement of the strap surface parts 11 and 11', and each of them is connected to the guide Member 13,1
3', and arms 22, 22' provided on the bases 21, 21'.
The arms 22, 22' are provided with lifting means for raising and lowering them, such as air cylinders 23 and 23', and suction means provided on the arms 22 and 22', such as suction cups 24 and 24'.

It is preferable that the arms 22, 22' have their respective bodies bent, and have their bases mounted on the bases 21, 21' so that they can be rotatably connected when necessary.
In this way, as shown in FIG.
1' can be rotated to adjust the height position of the suction cups 24, 24'.
There is an advantage that the amount of displacement S in the horizontal direction of 4 and 24' can be reduced.

The movable platform 3 places the press material on its upper surface, and moves the space formed between the two molds 4 and 5 along the line connecting the molds 4 and 5, that is, the material transfer path f.
For this purpose, the movable platform 3 is provided with a guide means 31 and a drive means (not shown).

Furthermore, this movable platform 3 has the pair of suction cups 24,
24', the suction cup 24 of the first suction device 2
When the press material M is taken out from the preceding mold 4, the press material M is received near the mold 4 and conveyed to the vicinity of the succeeding mold 5, and at this position P1 _' , the second suction device 2' The press material M is transferred to the suction cup 24'.

The pair of suction devices 2, 2' have suction cups 24,
24', as shown in FIG. 3, transfers the movable platform 3;
Starting from receiving positions P ₁ and P ₁ ′, arrows A, B, C,
It is moved up and down and moved in the order of D, E, and F, and by the intermediate lifting and lowering movements C and D, it reaches the position P ₂ ,
The operation is controlled so that it contacts the molds 4 and 5 at P ₂ '.

Furthermore, the suction cups 24, 24' are located at positions P ₁ and P ₁ '.
The adsorption and release operations are repeated alternately at P ₂ and P ₂ ', thereby adsorbing and releasing the press material M.

The operation of the apparatus of the present invention will be explained below with reference to FIG.

First, the rams 61 and 71 of the press machines 6 and 7 are lowered to press-form the material plates M' and M'' on the molds 4 and 5, respectively, which is shown in the first stage in FIG. 4A.

At this stage, the first suction device 2 is stopped near the preceding press machine 6 and is in a lowered position, and its suction cup 24 is at rest or idle because there is no object to be suctioned, that is, press material.

On the other hand, the other second suction device 2' is located near the following press machine 7, and a movable platform 3 has arrived below this device 2', and the press material M on it has a suction cup. 24' is either adsorbed or in contact with it so that it can be adsorbed.

Next, in the second stage, when the rams 61 and 71 rise, the press material M' placed on the mold 5 of the following press machine 7 is removed by a discharge means (not shown), and the surface of the mold 5 becomes empty. Figure 4B
As shown in the figure, the press material M on the movable platform 3 is transferred, and the press material M'' on the mold 4 of the preceding press machine 6 is taken out, and at the same time, the movable platform 3 is in an empty state and the press material M'' is transferred to the preceding press. Move to a predetermined position _P1 set near the machine 6.

At this stage, the adsorption devices 2, 2' are
The operations 1 to 5 shown in the figure are performed, and both devices 2 and 2' move in the direction of separation from each other in operations 1 to 3, approach the molds 4 and 5, and return to their original positions in operations 2 to 3. Among the above operations, it is desirable that the operation (a) proceed in parallel while the rams 61, 71 are rising, and the operations (e) and (f) should be started while the rams 61, 71 are descending. It is desirable to have this move in parallel. That is, by setting in this way, there is an advantage that the ram lifting time of the press machines 6 and 7 can be shortened and the operating speed can be increased.

Furthermore, in the second stage, since the subsequent press machine 7 is supplied with the press material M, the second suction device 2' adsorbs the press material M and transfers it onto the mold 5. While the press machine 6 on the preceding side operates to release the press material M'', the press material M'' is carried out from the preceding press machine 6, so the first suction device 2 suctions the press material M'' on the mold 4,
Next, press material is placed on the movable platform 3 at the return position.
It operates to place M'' and release it.
In order to smooth the operation of the first suction device 2, the movable platform 3 moves toward the preceding press machine 6 at the same time as the second suction device 2' pulls up the press material M. It is desirable to design the system so that it reaches the receiving position _P1 in advance before returning.

When the press material M'' on the mold 4 is carried out in the second stage, a new press material m is fed onto the mold 4 by a feeding device (not shown), and the press is pressed by feeding the new press material m. The machines 6 and 7 operate again, thereby pressing the press materials M and m.

The third stage is when the rams 61, 71 of the press machines 6, 7 descend again in this way, and at this stage the movable platform 3 moves to the following press machine 7 as shown in Fig. 4C. It contacts the second suction device ₂ ' at the delivery position P1 shown in Figure A.

Therefore, since the present apparatus returns to its original state, the above-described operations can be repeated to sequentially transport and supply the press material from the mold 4 to the mold 5.

In this way, the device of the present invention has suction devices 2, 2' attached to the pair of opposing strap surfaces 11, 11' of one endless cord 10, respectively, and the endless cord 10 is reciprocated by one driving means. This allows the pair of suction devices 2, 2' to move back and forth, resulting in the following effects.

First, it is possible to reliably move the pair of suction devices 2, 2' simultaneously in opposite directions in the same stroke and at the same speed.

Second, since the pair of suction devices 2, 2' can be moved by one driving means, the driving means is inexpensive, and the driving means, for example, the motor 1, can be moved.
Since the two characteristics affect the movement of the pair of suction means in the same manner, drive control is easy.

Thirdly, since the operation can be controlled by providing a detection means on only one of the pair of suction devices 2, 2', it is extremely easy to control the suction devices and the driving means.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the device of the present invention, Fig. 2 is a side view showing the arm of the suction device used in the above device, Fig. 3 is a schematic diagram showing the operation of the suction device used in the device of the present invention, and Fig. 4 The figure is a schematic diagram showing the operation of the same device step by step. In the figure, 1 is a transfer system, 2 is a first adsorption device, 2' is a second adsorption device, 22, 22' are arms, 24, 2
4' is a suction cup as a suction means, 3 is a movable platform, 4,
5 is a mold, 6 is a leading press machine, 61 is a ram,
7 is the following press machine, 71 is the ram, M, M',
M″, m indicates the press material.

Claims (1)

[Claims] 1. Between the pair of press machines, there is a first suction device close to the preceding press machine, a second suction device close to the following press machine, and a movable platform that moves back and forth between the pair of suction devices. The pair of suction devices each have an arm provided with a suction means, and are configured to be moved in a direction toward and away from each other in conjunction with each other by a transfer system, and the transfer system is configured to move the pair of suction devices toward and away from each other. The suction means is placed near the press machine during the pressing operation of the press machine, and while the rams of the pair of press machines are rising, the suction means is moved so as to be close to the mold of each press machine for a predetermined period of time. The first suction device uses its suction means to suction the press material on the mold of the preceding press machine, and releases it at a fixed position set near the preceding press machine. On the other hand, the second suction device uses its suction means to suction the press material at a fixed position set near the subsequent press machine, and also transfers this press material to the mold of the subsequent press machine. The movable platform is configured to receive the press material at the fixed position of the first suction device, and transfer the press material to the second suction device during the pressing operation of the pair of press machines. the empty platform from the fixed position of the second suction device to the fixed position of the first suction device at a predetermined time during the period when the rams of the pair of press machines are separated from the mold; In the material supply device for a press machine configured to move in a fixed state, the transfer system includes an endless cord provided between the pair of press machines, and a driving means for reciprocating the endless cord. The pair of suction devices are separately connected to the pair of opposing strap surfaces of the endless strap,
A material supply device for a press machine, wherein the driving means is configured to cause the endless cord to reciprocate in accordance with a required travel stroke of the suction device.