JPS6245133B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transferring a plurality of objects from one location to another.

Among the conventional methods for transferring objects to be transferred, there is a method in which the transfer is performed using a suction device having a structure in which a plurality of suction cups are fixed to the bottom surface of a suction box.
When releasing the transferred objects adsorbed by each suction cup,
If there is a difference in height between the places where the objects are placed, it is necessary to release the objects from a position slightly away from the place where they are placed. For example, if the objects are easily breakable, There is a problem of damaging the transferred items.

To solve this problem, we installed multiple cylinders on the underside of the hollow box, each of which can move up and down.
It has been devised that the lower ends of these cylindrical bodies are provided with suction cups, and that the cylindrical bodies are transferred by a suction device constructed such that they are constantly urged downward by a spring. However, when using such a device, it is possible to prevent damage due to falling when placing the transferred items in the storage location, but for example, the difference in height between the storage locations of the individual transferred items may If the spring is large, the object to be transferred is placed at the high location with the spring being tightly compressed. For this reason,
The pressing force of the spring applied to the object to be transported via the suction cup is extremely large, and there is a drawback that the object to be transported may be crushed by the pressing force.

Therefore, the present invention is designed to eliminate the above-mentioned drawbacks, and even if there is a height difference between the storage locations of a plurality of objects to be transported, it is possible to place all the objects to be transported in their respective storage locations. Of course, when placing the transferred objects in this way, it is possible to place the transferred objects quietly without applying a large pressing force to any transferred objects, and to prevent damage to the transferred objects. The aim is to provide a method for transporting goods.

The drawings showing the embodiments of the present application will be described below. In FIG. 1, 1 is a frame and 2 is a rail, which is spanned between a suction position 3 and a release position 4. Reference numeral 5 denotes a traveling body mounted so as to move freely in the direction of the arrow with respect to the rail 2; 6 is a cylinder exemplified as a transfer member; the main body thereof is fixed to the frame 1; and the advancing and retracting rods are connected to the traveling body 5; There is. 7
is an elevating member attached to the traveling body 5, and a cylinder is used as an example. 8 is an adsorption device;
It is attached to the advancing/retracting rod of the elevating member 7. This suction device 8 is constructed as shown in detail in FIG. That is, in FIG. 2, 9 is a main body formed in a hollow shape, and 10 indicates the hollow part. Reference numeral 11 indicates a communication port communicating with the hollow portion 10. 12 is a mounting hole drilled on the bottom surface of the main body; 1
Reference numeral 3 denotes an elevator tube mounted on the mounting hole 12 so that it can be raised and lowered, and 14 is a suction cup attached to the lower end of the elevator tube 13, the inside of which communicates with the hollow portion 10 of the main body 9 via the elevator tube 13. . Next, reference numeral 15 indicates an operating member of the suction device 8. In this operating member, 16 is a vacuum generator, 17 is a hose connecting the vacuum generator and the communication port 11 in the suction device 8, and 1
Reference numeral 8 denotes a switching device, which consists of a valve 19 and a solenoid 20, as shown by the symbol. 21
indicates a well-known variable throttle valve. 22 is a conveyor whose one end is located at the suction position 3, 23 is a mounting table provided at the release position 4, and 24 is an object to be transferred.

In the structure described above, a plurality of objects 24 are intermittently sent to the suction position 3 by the conveyor 22, as is well known. Then, the elevating member 7 extends, the suction device 8 descends, and the plurality of suction cups 14 come into contact with the transferred object 24, as shown in FIG. Next, when the switching device 18 is switched as shown in FIG.
The pressure in the hollow part 10 in the main body 9 is reduced to negative pressure. Therefore, the object 24 to be transferred is attracted to the suction cup 14, and the elevator tubes 13 are each pulled up into the hollow portion 10 in the attracted state. Then, the elevating member 7 contracts and the suction device 8 is pulled upward as shown in FIG.

Next, the cylinder 6 is extended, the traveling body 5 is moved to the left in FIG. 1, and the suction device 8 is brought to the release position 4. Next, the elevating member 7 is extended and the suction device 8 is lowered. As shown in FIG. 4, the objects were piled up to the highest level on the mounting table 23 (the stacked height varies due to variations in the thickness of each object, in addition to the number of sheets stacked). The transfer is continued until the object 24, which is sucked by the suction cup 14, does not come into contact with the object 24 to be transferred.

In this state, the switching device 18 is switched as shown in FIG. Then, air gradually flows into the hollow part 10 via the throttle valve 21 and the switching device 18, and the reduced pressure is gradually released and the pressure returns to atmospheric pressure. In this process, the elevator tube 13 descends relative to the main body 9 while each suction cup 14 continues to adsorb the object 24 to be transferred, and each object 24 to be transferred is attached to the suction cup 1.
4 are placed on top of the stacked objects 24, respectively. (In this case,
After the transferred object 24, which was attracted by the suction cup 14, comes into contact with the transferred object that has been piled up earlier,
The suction cup 14 and the elevating cylinder 13 connected thereto are the objects to be transferred 2.
It is in a state where it is just placed on top of 4. ) When all the objects 24 suctioned by the suction cups 14 in this way are placed on the objects 24 stacked in advance, the elevating member 7 contracts and the suction device 8 moves. The suction device 8 is pulled upward, and the cylinder 6 is further contracted, so that the suction device 8 returns to its initial state as shown in FIG.

Incidentally, the elevating tube 13 is constructed as follows so that the above-mentioned operations can be performed. That is, the suction area for raising and lowering the elevator tube 13 with respect to the main body 9 is A ₁ , the weight of the elevator tube 13 is W ₁ , and the suction cup 14
Let A ₂ be the adsorption area, W ₂ be its weight, and W ₃ be the weight of the object to be transferred. Then, A ₁ , A ₂ , W ₁ are arranged so that W ₁ +W ₂ +W ₃ /A ₁ >W ₃ /A _2. , W ₂ is selected. Note that these values are appropriately determined depending on the type of object 24 to be transferred, its mechanical strength, and other factors.

The above explanation is about the case where a plurality of objects to be transferred are picked up and transferred in a flat state.
The suction device configured as described above can also be used when attempting to suction objects to be transported that are lined up at different heights. Can be done.

As described above, in this invention, since a plurality of suction cups 14 are provided on the lower surface of the main body 9, when transferring objects, it is possible to simultaneously transfer a plurality of objects in parallel. This has the advantage that high work efficiency can be obtained. Furthermore, in the case of such a transfer, when a plurality of objects to be transferred are placed in a predetermined place, the elevating tube is lowered with the suction cups still adsorbing the objects to be transferred, so that each object to be transferred is Not only if the places where the objects are placed are flat, but also if there is a difference in height between them, all the objects to be transferred can be placed gently.For example, if the objects to be transferred are before firing It is useful for safely transporting items that are easily breakable, such as tiles, without damaging them.

Moreover, in the method of the present invention, since the elevator tube 13 is lowered relative to the main body 9 depending on the weight of itself and the object to be transferred, when placing the object to be transferred which has been adsorbed as described above, Even if the difference in height mentioned above is large, it goes without saying that the objects to be transferred can be placed quietly in a lower place without being pressed, and even if the object is placed in a higher place, the objects can be placed in a lower place. It can be placed quietly with only the same pressing force being applied, and even if the object to be transferred is easily breakable as described above, it has the effect of preventing cracking and making transfer safer.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a front view of the transfer device, and FIGS. 2 to 6 are explanatory views of the operation. 9...Main body, 10...Hollow part, 13...Elevating cylinder, 14
...Sucker, 24...Object to be transported.

Claims (1)

[Claims] 1. A main body configured to be movable between a suction position and a release position and formed hollow, and a plurality of suction cups disposed on the lower surface of the main body and communicated with the hollow part of the main body. At the suction position, the objects to be transferred are sucked by each of the plurality of suction cups by reducing the pressure in the hollow part of the main body, and at the release position, the adsorbed objects are released by releasing the reduced pressure in the hollow part. In the method for transferring an object to be transferred, the plurality of suction cups are
By attaching them to the lower ends of a plurality of elevating tubes that are movably movable up and down to a plurality of attachment holes drilled in the lower surface of the main body, respectively, and reducing the pressure in the hollow part of the main body at the suction position. , the lifting cylinder is pulled up into the hollow part of the main body with the object to be transferred attached to the suction cup, and at the release position, the vacuum in the hollow part is gradually released, before the suction cup releases the object to be transferred. A method for transferring an object, characterized in that the elevating tube is lowered relative to the main body by the weight of itself, the suction cup, and the object.