JP2000185890A - Attracting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attracting device capable of attracting and separating a steel plate immediately at low equipment and operation costs. SOLUTION: An attracting device 10 comprises a permanent magnet 11 and an air supply pipe 12. The permanent magnet forms an attracting surface 11a of the attracting device. The air supply pipe communicates with a compressor supplying compressed air, and installed in an air supply hole 11b in the permanent magnet. Because the attracting surface of the attracting device is formed of the permanent magnet, it can attract and hold the steel plate 13 immediately. To separate the attracted steel plate, compressed air is supplied through the air supply pipe to press the steel plate. Thus the attracting of the steel plate 13 can be performed immediately by the permanent magnet and, because the compressor is used only at the time of separation, equipment and operation costs can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device which is attached to a tip of a crane or a robot arm and moves a steel plate or the like in a moving operation of a steel plate or the like.

[0002]

2. Description of the Related Art As an adsorption device for adsorbing an iron plate, a device using air suction (vacuum) and a device using an electromagnet are known.

As shown in FIG. 6, a suction device 50 utilizing air suction has a vacuum cup 52 attached to a vacuum pipe 51 which communicates with a vacuum pump (not shown). This device sucks the air in the vacuum cup 52 after pressing the vacuum cup 52 against the iron plate 53, makes the vacuum cup 52 in a vacuum state, sucks and holds the iron plate 53, and sends air into the vacuum cup 52. This causes the iron plate 53 to be detached.

As shown in FIG. 7, an attraction device 60 using an electromagnet has an electromagnet 61. This device uses an iron plate 6
By bringing the electromagnet 61 close to 2 and switching ON / OFF of the electromagnet 61, the iron plate 62 is attracted and desorbed.

[0005]

An apparatus utilizing air suction requires low air suction and takes a long time to adsorb an iron plate, resulting in poor productivity. Also, the energy required for sucking air is large.

[0006] Further, an apparatus using an electromagnet does not require much time for adsorption and desorption of an iron plate. However, equipment costs and operation costs are high. Become.

Therefore, the present invention provides a method for quickly adsorbing an iron plate.
It is an object of the present invention to provide an adsorption device that can be separated and that is inexpensive in equipment costs and operation costs.

[0008]

SUMMARY OF THE INVENTION An attraction device according to the present invention presses an attraction portion provided with a permanent magnet and an attraction object which is a magnetic material attracted to the attraction portion against the attraction force of the attraction portion. Pressing means for adsorbing the object to be adsorbed to the adsorbing portion by the magnetic force of the permanent magnet, and pressing the object to be adsorbed by the pressing means to detach the object to be adsorbed from the adsorbing portion.

The pressing means is constituted by an air supply pipe for selectively supplying air to the adsorbing section, and presses the adsorbed body by the pressure of air supplied between the adsorbing section and the adsorbed body. The adsorbed body may be detached from the section. In addition,
More preferably, the pressing means is constituted by a cylinder mechanism,
One that presses the object to be sucked by extending the cylinder mechanism to separate the object to be sucked from the suction part, or
It is composed of a bag-like member that is attached to the suction part so that it can expand and contract,
It is desirable that air be supplied to the bag-shaped member to inflate the bag-shaped member, thereby pressing the object to be adsorbed and detaching the object from the adsorbing portion.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a suction device according to an embodiment of the present invention.

The suction device shown in the following embodiment is, for example, a device for suction-holding an iron plate, and is provided at the tip of a crane device or a robot arm. Then, the iron plate or the like is sucked and moved to a predetermined position by a crane or the like, and then the iron plate is separated.

FIG. 1 shows an adsorption device according to a first embodiment of the present invention.

This adsorption device 10 has a permanent magnet 11 and an air supply pipe 12.

The permanent magnet 11 has a disk shape, and one end surface forms an attraction surface 11a of the attraction device. The permanent magnet 11 has an air supply hole 11b at the center. Adsorption surface 11a is air supply hole 1
A depression 11c is formed around 1b.

The air supply pipe 12 communicates with a compressor (not shown) for supplying compressed air, and is attached to the air supply hole 11 b of the permanent magnet 11. The attachment portion 12a between the air supply pipe 12 and the permanent magnet 11 is attached without air leakage.

Since the attracting surface 11a of the attracting device 10 is composed of the permanent magnet 11, the attracting surface 11a is brought close to the iron plate 13 so that the magnetic force of the permanent magnet 11 causes the iron plate 1 to move.
3 can be quickly adsorbed to the adsorption surface 11a.
The iron plate 13 is held in an attracted state by the permanent magnet 11.
When the adsorbed iron plate 13 is separated, compressed air is sent from the air supply pipe 12 to the depression 11c of the adsorbing surface 11a,
The compressed air presses the iron plate 13 and the suction surface 11a
From the iron plate 13. In this case, when the pressing force of the air exceeds the attraction force of the permanent magnet 11, the iron plate 13 can be detached.

The depression 11 formed on the suction surface 11a
c is for ensuring a sufficient pressing force for the supplied air to separate the iron plate.

As described above, in the attracting device 10, the permanent magnet 11 is used for attracting and holding the iron plate 13, and the compressed air is used for detaching the iron plate 13.

Since the attraction surface 11a of the attraction device 10 is constituted by the permanent magnet 11, the attraction of the iron plate 13 can be performed quickly. Further, since the permanent magnet 13 is used, no electric power or the like is required. Further, since less power is required, equipment costs can be reduced.
Further, since the compressor (not shown) is selectively used only at the time of detachment, energy (vacuum suction or electromagnetic suction) required for adsorption in the related art is not required, and the power required by the permanent magnet can be reduced. Operating costs can be reduced.

This adsorption device 10 has a simple structure,
It is suitable for applications such as suction and transfer of members that do not cause a problem even if they are slightly damaged, such as inner plates of automobile doors. In order to prevent the object to be attracted from being damaged, a protective material such as rubber or felt may be provided on the attraction surface 11c so as not to hinder the attraction by the permanent magnet 11.

Next, a suction device according to a second embodiment of the present invention will be described.

As shown in FIG. 2, this adsorption device 20
It has a permanent magnet 21, an air supply pipe 22, and an air cylinder 23.

The permanent magnet 21 has a disk shape, and one end surface forms an attraction surface 21a of the attraction device. The permanent magnet 21 has a rod insertion hole 21b formed in the center.

The air cylinder 23 includes a cylinder member 24
, A piston member 25, and a coil spring 26.
The cylinder member 24 is a cylindrical cylinder having an air supply hole 24a in the cylinder head. The piston member 25 includes a piston portion 25 a inserted into the cylinder member 24 and a piston portion 2.
And a rod portion 25b extending from 5a toward the cylinder opening in the reciprocating direction of the piston. The rod portion 25b
Is provided with a rubber or felt protective material 25c so as not to damage the iron plate 27. The coil spring 26 is inserted into the rod portion 25b of the piston member 25.

In the air cylinder 23, a piston member 25 is housed in a cylinder member 24, a coil spring 26 is inserted through a rod portion 25 b of the piston member 25, and the rod portion 25 b is inserted into a rod insertion hole 21 b of the permanent magnet 21. so,
It is attached to the back surface of the attracting surface 21a of the permanent magnet 21.

The air supply pipe 22 is attached so as to communicate with a compressor (not shown) and communicate with an air supply hole 24 a of an air cylinder 23. Air cylinder 23 is air supply pipe 2
2 supplies compressed air from the rod 2
5b extends from the rod insertion hole 21b of the permanent magnet 21. Note that the length of the rod portion 25b is
The length of the rod portion 25b protruding from the one rod insertion hole 21b is set to be long enough to separate the iron plate 27 from the permanent magnet 21.

As in the first embodiment, since the attracting surface 21a is constituted by the permanent magnet 21, the attracting device 21 attracts the iron plate 27 by the magnetic force of the permanent magnet 21 by bringing the attracting surface 21a close to the iron plate 27. The surface 21a can be quickly adsorbed. Further, when the attracted iron plate 27 is to be released, compressed air is sent from the air supply pipe 22 to the air cylinder 23 and the piston member 25 of the air cylinder 23 is moved.
By projecting the rod portion 25b from the suction surface 21a, the iron plate 27 is pressed by the tip of the rod portion 25b, and the iron plate 27 is separated from the permanent magnet 21.

That is, similarly to the attracting device of the first embodiment, the permanent magnet 21 is used for attracting and holding the iron plate 27, and the compressed air is used for detaching the iron plate 27 via the air cylinder 23. In the present embodiment, since the air supplied from the compressor (not shown) is used without leakage by providing the air cylinder 23, the amount of supplied air can be reduced. Further, since the rod portion 25b protrudes by a required length, the iron plate 27 can be reliably detached. Also, since the area of the piston head of the piston part 25a is larger than the area of the pressing surface of the rod part 25b,
The iron plate 27 can be released by exerting a required pressing force with a smaller air pressure. Thereby, the energy consumption of the compressor (not shown) can be reduced as compared with the first embodiment, and the operating cost can be further reduced.

In this embodiment, the air cylinder 23
Is provided at the center of the permanent magnet 21,
It is desirable that the air cylinders 23 be provided at a plurality of locations uniformly with respect to the center of the permanent magnet 21. More preferably, it is desirable that at least three or more air cylinders 23 are uniformly provided on the suction surface 21a, and the air supply pipes 22 that supply air to the respective air cylinders 23 communicate with each other.

For example, in the embodiment shown in FIG. 3, three air cylinders 23 'are uniformly provided on an attraction surface 21a' of a permanent magnet 21 ', and an air supply pipe 22' for supplying air to each air cylinder 23 'is provided. An adsorbing device 20 'which is in communication. In this adsorber, the pressure of the air supplied to each air cylinder 23 'is constant because the air supply pipe 22' communicates. Thereby, each rod portion 2 of each air cylinder 23 'is formed.
5b 'can press the iron plate (not shown) evenly and planarly. Accordingly, the iron plate does not tilt when the iron plate is pressed, so that the iron plate can be more reliably detached.

Although the air cylinder is used as the cylinder mechanism in the second embodiment, another cylinder mechanism such as a hydraulic cylinder may be used as the cylinder mechanism.

Next, a description will be given of a suction device according to a third embodiment of the present invention.

As shown in FIG. 4, this adsorption device 30
It has a permanent magnet 31, an air supply pipe 32, and a rubber bag member 33.

The permanent magnet 31 is disk-shaped, has an air supply hole 31a formed at the center, and has a thread groove 31b formed on the outer peripheral surface.

The air supply pipe 32 is attached so as to communicate with a compressor (not shown) and communicate with the air supply hole 31a of the permanent magnet 31.

The rubber bag member 33 includes a ring member 33a having a screw portion 33a1 on the inner peripheral surface corresponding to the screw groove 31b on the outer peripheral surface of the permanent magnet 31, and a rubber bag portion 33b stretchable on the outer peripheral surface. A member integrally fixed by fusion and attached to the permanent magnet 31 on the opposite side of the air supply pipe 32.

The attracting device 30 attracts the iron plate 34 by the magnetic force of the permanent magnet 31 as shown in FIG. The adsorbed iron plate 34 is released by supplying compressed air to the air supply pipe 32 by a compressor (not shown) to inflate the rubber bag portion 33b.
4 is pressed to release the iron plate 34 from the permanent magnet 31.

The ring member 33a of the rubber bag member 33
Can adjust the relative positional relationship with the permanent magnet 31 by adjusting the screwing of the screw portion 33a1. Thereby, the distance between the pressing surface 33b1 of the bag portion 33b when the bag portion 33b is inflated and the attraction surface 31c of the permanent magnet 31 can be adjusted.

The attraction device 30 has a structure in which the attraction is performed by the permanent magnet 31, so that the attraction can be performed quickly.
Further, since the iron plate 34 can be uniformly pressed by the bag portion 33b, the iron plate 34 can be reliably removed.

In the third embodiment, a rubber bag-shaped member is shown as the bag-shaped member, but the material and shape of the bag-shaped member are not limited to this.

The embodiment according to the suction device of the present invention has been described above. Note that the present invention is not limited to the above embodiment, and the shape and material of each member may be variously changed.

[0042]

The attraction device according to the present invention comprises: an attraction portion provided with a permanent magnet; and a pressing means for pressing an object to be attracted which is a magnetic material attracted to the attraction portion against the attraction force of the attraction portion. Therefore, the object to be attracted can be quickly attracted to the attracting portion by the magnetic force of the permanent magnet, and the object to be attracted can be detached from the attracting portion by pressing the object to be attracted by the pressing means. Since the permanent magnet does not require energy such as electric power, equipment costs and operating costs can be reduced. Further, since the pressing means operates only when the object to be adsorbed is separated, the operating cost can be reduced.

By forming the pressing means with a cylinder mechanism or a bag-like member, the object to be sucked can be more reliably and quickly separated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a suction device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of an adsorption device according to a second embodiment of the present invention.

FIG. 3 is a bottom view of a suction device according to a modified example of the second embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of an adsorption device according to a third embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a suction device according to a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a suction device provided with a vacuum cup.

FIG. 7 is a longitudinal sectional view of an attraction device provided with an electromagnet.

[Explanation of symbols]

 11, 21, 31 Permanent magnet 12, 22, 32 Air supply piping 13, 27, 34 Iron plate 23 Air cylinder 33 Rubber bag member

Claims (4)

[Claims] 1. A permanent magnet comprising: an attraction portion provided with a permanent magnet; and pressing means for pressing an object to be attracted, which is a magnetic material attracted to the attraction portion, against the attraction force of the attraction portion. An adsorbing device, wherein the object to be adsorbed is attracted to the adsorbing portion by a magnetic force of a magnet, and the object to be adsorbed is released from the adsorbing portion by pressing the object to be adsorbed by the pressing means. 2. The suction means comprises an air supply pipe for selectively supplying air to the suction unit, and the pressure of the air to be supplied between the suction unit and the suction object causes the pressure to be applied to the suction object. 2. The suction device according to claim 1, wherein the device is pressed to release the object to be sucked from the suction portion. 3. The pressing means comprises a cylinder mechanism,
2. The suction device according to claim 1, wherein the object to be sucked is depressed by pushing the object to be sucked by extending a cylinder mechanism. 4. The suction means comprises a bag-like member attached to the suction section so as to be extendable and contractable, and supplies air to the bag-like member to inflate the bag-like member, thereby causing the object to be sucked to be inflated. 2. The suction device according to claim 1, wherein the device is pressed to release the object to be sucked from the suction portion.