KR200383711Y1 - Electro-Permanent Complex Magnetic Lift - Google Patents

Abstract

The present invention provides a magneto-electromagnetic lift including an electric coil in which a permanent magnet is positioned around a housing and an iron core of a ferromagnetic material and a lead cable is connected around the permanent magnet.

According to the present invention, it is possible to generate a larger suction force with a permanent magnet of the same size, and to easily implement a circular magnetic lift, as well as easier to assemble and lower magnetic lift height.

Description

Electro-Permanent Complex Magnetic Lift {Electro-Permanent Complex Magnetic Lift}

The present invention relates to a device for adsorbing, fixing, transporting and detaching an adsorbed object using a magnetic field of a permanent magnet, and more specifically, using a first permanent magnet having a large coercive force and a second permanent magnet having a small coercive force. The present invention relates to a magnetic-electromagnetic composite magnetic lift for easily and safely adsorbing a metal object by using magnetic flux flow generated in each permanent magnet to fix, transport or desorb it.

In industrial sites such as automated production lines, lifts (or lifts) for transporting or fixing objects to be absorbed are essential equipment. Many of these lifts use magnets, but using only permanent magnets is difficult to desorb, and using only electromagnets requires not only a large amount of power to obtain a certain attraction force, but also a power supply or power system. In the event of a problem, the adsorbed objects may fall freely or drop off during operation, resulting in a huge safety accident. Magnetic lifts that can be used semi-permanently without failure have been used since the 1980s. Magnetic lift having the above advantages includes two kinds of permanent magnets, namely fixed permanent magnets (first permanent magnets) and variable permanent magnets (second permanent magnets), and the polarity of the second permanent magnets is changed appropriately by power supply. It has been used to adsorb and desorb an object.

1 and 2 are respectively adsorption and desorption principle diagram of the magnetic lift according to the prior art. As shown in the drawing, the conventional magnetic lift has a top plate 10 on which a device (not shown) for transferring a lift is installed, and iron cores 20 of ferromagnetic materials are installed below both ends of the top plate, and between the iron cores 20. The first permanent magnet 30 having a large coercive force and the second permanent magnet 40 having a small coercive force are inserted into the separator, and a separator 50 for preventing leakage of magnetic flux (indicated by diagonal lines) generated in the permanent magnet is provided. Located between the top plate 10 and the iron core 20, the second permanent magnet 40 is wrapped in an electric coil 60, the power supply for supplying electricity to the electric coil 60 (not shown) C) and lead cable 70.

Looking at the adsorption principle of the conventional magnetic lift shown in Figure 1, when arranged so that the polarity of the first permanent magnet 30 and the second permanent magnet 40 is the same, the first permanent magnet 30 and The magnetic flux (indicated by diagonal lines) from the N pole of the second permanent magnet 40 passes through the ferromagnetic iron core 20 and the adsorbed object 80 to be adsorbed, and thus the first permanent magnet 30 and the second permanent magnet. A magnetic flux flow (indicated by diagonal lines) that reaches the S poles of the first permanent magnet 30 and the second permanent magnet 40 through the iron core 20 adjacent to the S pole of the 40 and the Adsorption force is generated between the ferromagnetic iron core 20 and the object to be adsorbed, and the adsorbed object 80 can be adsorbed by the adsorbing force.

After the adsorption force is generated, the polarity of the second permanent magnet 40 is maintained as it is, even if the electric power of the power supply device (not shown) installed outside is maintained, and thus the first permanent magnet 30 and the second permanent magnet ( Adsorption force between the iron core 20 and the object to be absorbed 80 of the ferromagnetic material by 40 is maintained.

On the other hand, as shown in FIG. 2, when the object to be absorbed 80 is desorbed from the iron core 20, the polarity of the second permanent magnet 40 and the polarity of the first permanent magnet 30 are opposite to each other. When electricity is supplied by a power supply device (not shown) installed externally so that the magnetic flux (denoted by diagonal lines) from the N pole of the first permanent magnet 30 is not passed through the object to be absorbed, the second permanent Since the magnetic flux flow (indicated by diagonal lines) entering the S pole of the magnet 40 is formed, the adsorption force between the ferromagnetic iron core 20 and the object to be absorbed 80 is removed so that the object to be absorbed 80 is detached from the lift. do.

However, in the conventional magnetic lift described above, since two permanent magnets should be stacked in a narrow area, it is not only difficult to assemble and stack small permanent magnets when producing a large lift, but also the volume becomes too large. However, there is a problem that it is difficult to implement a circular magnetic lift.

In addition, the leakage magnetic flux is generated through the separator 50 and the upper plate 10 has a disadvantage that the adsorption force is lost.

The present invention is proposed to compensate for the disadvantages of the conventional magnetic lift as described above, and is intended to provide an electro-magnetic composite magnetic lift that is easy to assemble and easily implements various types of magnetic lifts including a circular shape.

In addition, the present invention aims to provide a magnetic-electromagnetic composite magnetic lift that can reduce or suppress leaking magnetic flux to generate greater adsorption force even by magnets of the same size.

In order to achieve the above object, the present invention and the housing; An iron core of a ferromagnetic material disposed inside the housing; A first permanent magnet disposed along a circumference of the iron core; A second permanent magnet located between the housing and the upper surface of the iron core; An electric coil wound around the second permanent magnet; It provides an electro-magnetic composite magnetic lift comprising a lead cable connected to the electric coil.

The iron core according to the present invention is characterized in that the cylindrical, square or polygonal pillar shape, the first permanent magnet may be arranged in a number of dispersion.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a cross-sectional view of an electro-electromagnetic composite magnetic lift according to a preferred embodiment of the present invention, the electro-electromagnetic composite magnetic lift according to the present invention includes a housing 100 and an iron core 110 disposed inside the housing. A first permanent magnet 120 disposed around the iron core 110, a second permanent magnet 130 formed between the housing 100 and an upper surface of the iron core 110, and the second permanent magnet 120. And a lead cable 150 connected to the electric coil 140 surrounding the magnet 120 and an external power supply device (not shown) to supply power to the electric coil 140. Although not shown, a moving device for moving the lift is installed at the upper portion of the housing 100.

The housing 100 is to prevent the magnetic flux generated by the magnetic-electromagnetic composite magnetic lift according to the present invention to leak to the outside to reduce the adsorption force, preferably made of a ferromagnetic material. To this end, the housing 110 may be assembled into a polygonal shape that is circular or preferably rectangular. For example, when the housing 110 has a rectangular shape, one or more permanent magnets according to the present invention may be coupled to every four sidewalls.

An iron core 110 in which the object to be adsorbed 160 (see FIG. 6) is adsorbed or desorbed is disposed in the housing 100. The iron core 110 is a ferromagnetic material having a shape of a vertical column, for example, a square column, having a cylindrical or polygonal cross section. Preferably, the iron core 110 may include an upper portion of a columnar shape having a polygonal cross section such as a circle or a square, and a lower portion of the columnar shape having a cross section of a circle or polygon having the same or different diameter than the upper portion.

On the other hand, the first permanent magnet 120 is disposed along the circumference of the iron core 110, when the iron core 110 is composed of the upper and lower, the first permanent magnet 120 is iron core 110 It can be disposed along the upper side of the). In addition, the first permanent magnet 120 is preferably disposed so that the polarity of the N pole and the S pole is bilaterally.

On the other hand, independently of the first permanent magnet 120, the second permanent magnet 130 is not positioned to overlap the upper portion of the first permanent magnet 120 as conventionally, the upper portion of the iron core 110 and the Located in the space between the housing (100). Therefore, it is possible to overcome the design and assembly difficulties caused by the overlapping position of the first permanent magnet and the second permanent magnet. At this time, preferably, the first permanent magnet 120 has a larger coercive force than the second permanent magnet 130.

This structure has the advantage that it is easier to assemble, reduce the volume of the lift, and can easily implement a circular magnetic lift in the case of a large magnetic lift, it can be arranged horizontally distributed without stacking small permanent magnets, The same permanent magnet can generate a large adsorption force.

That is, in the present design, the first permanent magnet 120 having a relatively high coercive force is arranged along the periphery of the iron core 110, and the second permanent magnet 130 is not laminated with the first permanent magnet 120. Since it is comprised, the shape of the iron core 110, the shape of the 1st permanent magnet 120, etc. can be adjusted according to the usage aspect of the magnetic lift of this invention, etc.

4a to 4c respectively show the shape of the first permanent magnet 120 according to a preferred embodiment of the present invention.

As shown in Figure 4a or 4b, the first permanent magnet 120 is made in the shape of a ring or semi-circular shape, and configured to generate polarity on the outer surface and the inner surface of the first permanent magnet 120, respectively. Thus, the shape of the entire magnetic lift in the present application can be configured in a circular shape instead of a conventional rectangular shape through a ring or semicircular first permanent magnet 120. For this purpose, the shape of the first permanent magnet 120 4A or 4B is not limited to a ring or semi-circle, as shown in FIG. 4A or 4B.

In particular, a plurality of first permanent magnets 120 according to the present invention may be distributed along the periphery of the iron core 110. For example, when the semi-circular first permanent magnet 120 shown in FIG. 4B is adopted, two semi-permanent first permanent magnets 120 may be disposed adjacent to each other.

Meanwhile, the first permanent magnet 120 according to the present invention may have a polygonal shape such as a quadrangle as shown in FIG. 4C and may be manufactured in a block shape and polarity may be generated at left and right sides thereof. . This configuration makes it easy to build a magnetic lift in the form of a box as a whole. In this case, of course, the first permanent magnets 120 may have a shape in which a plurality of the first permanent magnets 120 are distributed along the periphery of the iron core 110.

Referring to the preferred arrangement of the magnetic lift of the present invention including a permanent magnet having a shape as described above are as follows. 5A to 5C are bottom views schematically showing the configuration of the magnetic lift according to the preferred embodiment of the present invention, respectively.

FIG. 5A illustrates a case in which the first permanent magnet 120 has a semi-circular shape or a ring shape, and an iron core 110, an iron core 110, and a first permanent magnet having a first permanent magnet 120 disposed around the first permanent magnet 120. The housing 100 which accommodates 120 etc. inside is comprised circularly. In this case, a plurality of permanent magnets may be disposed along a portion of the iron core so that the first permanent magnet 120 may be distributed in a plurality distributed along the circumference of the iron core 110.

On the other hand, Figure 5b is the iron core 110 is formed around the first permanent magnet 120 is a circular shape as a whole, but is not limited to this, the housing 120 that accommodates the iron core 110 and the like inside the box The configuration of the magnetic lift in form is shown. In this case, the first permanent magnet 120 may have a semicircle or ring shape, and as shown in FIG. 4C, a plurality of first permanent magnets independent of each other may be configured in a block form.

In addition, Figure 5c illustrates a form in which a plurality of magnetic lifts configured in accordance with the present invention is installed horizontally in the interior of the housing (100). That is, each of the iron core 110 having a cylindrical shape and a first permanent magnet 120 positioned around the iron core are disposed inside the housing 100 having a box shape. In this case, the first permanent magnet 120 disposed around each of the iron cores 110 may have a semicircle or ring shape, but preferably, a plurality of first blocks having a plurality of block shapes, as shown in FIG. 4B. Permanent magnets can be distributedly arranged.

Although not specifically shown through the drawings, the above-described magnetic lift shape is merely an example, and the magnetic lift according to the present invention may have a circular or polygonal bottom surface according to the shape of the housing 100 and the iron core 110. Of course, the shape or number of the side walls may also vary accordingly. For example, the iron core 110 installed in the box-shaped housing 100 has a square pillar shape, and a plurality of first permanent magnets as shown in FIG. 4B are distributed along each vertical surface of the square pillar. It can have

Through the above-described configuration and easy to assemble, it is possible to implement a magnetic lift in the form of a circle and a box as a whole, looking at the principle of the magnetic lift according to the present invention.

6 is a cross-sectional view illustrating the adsorption principle of the magneto-electromagnetic composite magnetic lift according to an embodiment of the present invention, the polarity of the first permanent magnet 120 disposed around the iron core 110 and the iron core 110 and the housing On the electric coil 140 wound around the second permanent magnet 130 by an external power supply device (not shown) so that the polarity of the second permanent magnet 130 positioned between the 100 is maintained the same. When electricity is supplied, the magnetic flux Φ1 generated by the first permanent magnet 120 and the magnetic flux Φ2 generated by the second permanent magnet 130 form a magnetic flux flow indicated by diagonal lines, and the object to be adsorbed. Flow through the 160 is to be adsorbed object 160 is adsorbed to the lift.

After the adsorption force is generated, since the polarity of the second permanent magnet 130 is maintained even if the power of the power supply device (not shown) installed outside is maintained, the first permanent magnet 120 and the second permanent magnet ( Adsorption force between the lift by 130 and the object to be absorbed 160 is maintained.

7 is a view illustrating a desorption principle of an electro-magnetic composite magnetic lift according to an embodiment of the present invention, and the polarity of the first permanent magnet 120 disposed around the iron core 110 and the iron core 110 and the housing 100. 2) Electricity is supplied to the electric coil 140 wound around the second permanent magnet 130 by a power supply device (not shown) installed outside so that the polarity of the second permanent magnet 130 positioned between them is reversed. When the magnetic flux (Φ) from the N pole of the first permanent magnet 120 forms a magnetic flux flow (indicated by diagonal lines) entering the S pole of the second permanent magnet 130 without passing through the object to be absorbed (160). The adsorption force between the ferromagnetic iron core 110 and the object to be adsorbed is removed to detach the object to be adsorbed from the lift.

In the above, a preferred embodiment of the present invention has been described, but the present invention is not limited thereto. Rather, it will be apparent to those skilled in the art that various modifications and variations can be readily made. However, it will be apparent from the appended claims that such variations and modifications fall within the scope of the present invention without departing from the spirit of the present invention.

In the case of the magneto-electromagnetic composite magnetic lift according to the embodiment of the present invention, it is easy to manufacture in the form of a circle and a box, it is possible to generate a larger suction force by removing the leakage magnetic flux, and also to make one permanent magnet smaller By dividing and dispersing, it can be assembled more easily.

In addition, since power is supplied only at the moment of adsorbing or desorbing the object to be absorbed, it is possible to drastically reduce the electric energy consumption. It is possible to prevent safety accidents.

1 is a cross-sectional view for explaining the principle of adsorption of a conventional magnetic lift;

2 is a cross-sectional view for describing a detachment principle of a conventional magnetic lift;

3 is a cross-sectional view of an electro-magnetic composite magnetic lift according to a preferred embodiment of the present invention;

4A to 4C are perspective views each showing the shape of a permanent magnet according to a preferred embodiment of the present invention;

Figures 5a to 5c is a bottom view respectively showing an electro-magnetic composite magnetic lift according to a preferred embodiment of the present invention;

6 is a cross-sectional view for explaining the adsorption principle of the magneto-electromagnetic composite magnetic lift in accordance with a preferred embodiment of the present invention;

7 is a cross-sectional view for explaining the detachment principle of the electro-magnetic composite magnetic lift in accordance with a preferred embodiment of the present invention;

Brief description of the main parts of the drawing

100 housing 110 iron core

120: first permanent magnet 130: second permanent magnet

140: electric coil 150: lead cable

160: adsorbed object

Claims (3)

A housing; An iron core of a ferromagnetic material disposed inside the housing; A first permanent magnet disposed along a circumference of the iron core; A second permanent magnet located between the housing and the upper surface of the iron core; An electric coil wound around the second permanent magnet; Electromagnetic composite magnetic lift comprising a lead cable connected to the electric coil. The method according to claim 1, The first permanent magnet (120) and the second permanent magnet 130 is an electro-magnetic composite magnetic lift, characterized in that the circular shape. The method according to claim 1 or 2, The magnetic permanent magnet lift, characterized in that a plurality of the first permanent magnet is arranged distributed along the circumference of the iron core.