KR102322735B1 - Magnetic lift apparatus having magnetic field control capability - Google Patents

Abstract

The magnetic lifting device includes a first pole piece, a second pole piece, a rotating permanent magnet, a magnet rotating part, and a pole piece connection part. The first pole piece is magnetically connected to the N pole of the fixed permanent magnet, the second pole piece is magnetically connected to the S pole of the fixed permanent magnet, and in the rotating permanent magnet, the N pole is magnetically connected to the second pole piece. A first arrangement state in which the S pole is magnetically connected to the first pole piece while connected to the N pole is magnetically connected to the first pole piece and the S pole is magnetically connected to the second pole piece configured rotatably to be selectively disposed between the second configurations being Controls the magnetic force applied to the lifting object through the pole piece connecting portion magnetically connects the first pole piece and the second pole piece to prevent saturation of magnetic flux in the lifting object.

Description

Magnetic lift device with magnetic field control function {MAGNETIC LIFT APPARATUS HAVING MAGNETIC FIELD CONTROL CAPABILITY}

The present invention relates to a magnetic lift device, and more particularly, to a magnetic lift device for controlling a magnetic force on an action surface by inserting a bar that prevents magnetic saturation in an object.

A magnetic lift device is a device that lifts an attachment object made of a magnetic material such as iron by using magnetic force. Today, it is widely used as an internal device attached to a mold clamping machine of an injection machine, a die clamping machine of a press machine, and a chuck of a machine tool.

This magnetic lifting device basically attaches a magnetic body to the lifting object to the working surface by using the strong magnetic force of the permanent magnet. When released, the magnetic flow from the permanent magnet is controlled so that the magnetic flow is not formed on the working surface. Move the target away from the surface of action.

1 is a schematic cross-sectional view of an example of a conventional magnetic lift device. Fig. 1 discloses a magnetic lift device for holding and releasing by rotating a permanent magnet to change a magnetic circuit.

The magnetic lift device shown in FIG. 1 can lift or drop an iron plate or the like using a magnet rotating by a magnetic field by a stationary magnet and a coil, and requires a current in the form of a pulse to the coil only during operation, and the state after completion of the operation It does not require additional energy to maintain

However, since the conventional magnetic lift shown in FIG. 1 lifts or drops an iron plate by the direction of the rotating magnet, an accurate operation of the rotating magnet is required, but a device capable of controlling the malfunction of the rotating magnet is not provided.

Accordingly, when the thickness of the object to be lifted is thin, magnetic saturation occurs in the object, so that the rotating magnet does not operate in a desired direction during coil operation, thereby causing a problem in that the object cannot be lifted.

US 1020170055210 A

The present invention has been devised to solve the problems of the prior art, and an object of the present invention is to provide a magnetic lift system capable of effectively lifting by preventing malfunction of a rotating magnet regardless of the thickness of the lifting object.

In order to achieve the above object, a magnetic lifting device according to the present invention includes a fixed permanent magnet, a first pole piece, a second pole piece, a rotating permanent magnet, a magnet rotating part, and a pole piece connecting part.

The first pole piece is magnetically connected to the N pole of the fixed permanent magnet, the second pole piece is magnetically connected to the S pole of the fixed permanent magnet, and in the rotating permanent magnet, the N pole is magnetically connected to the second pole piece. A first arrangement state in which the S pole is magnetically connected to the first pole piece while connected to the N pole is magnetically connected to the first pole piece and the S pole is magnetically connected to the second pole piece rotatably configured to be selectively disposed between second configurations, the magnet rotating portion rotates the rotating permanent magnet to cause a transition between the first and second configurations through the first and second pole pieces The magnetic force applied to the lifting object is controlled, and the pole piece connecting portion magnetically connects the first pole piece and the second pole piece with a preset thickness to prevent saturation of magnetic flux in the lifting object.

According to such a configuration, by connecting a pole piece connecting portion of an appropriate thickness according to the lifting object between the pole pieces, the saturation of magnetic flux in the lifting object is prevented, thereby preventing malfunction of the rotating magnet regardless of the thickness of the lifting object, so that effective lifting is achieved. be able to perform

In this case, the pole piece connecting portion may contact the first pole piece and the second pole piece, respectively. According to this configuration, it is possible to prevent the saturation of magnetic flux in the lifting object by directly fastening and releasing the connecting member of an appropriate thickness to the pole pieces, if necessary.

In addition, the pole piece connection portion includes a first connection portion contacting the first pole piece and a second connection portion contacting the second pole piece, and a connection selection for selectively performing interconnection and separation of the first connection portion and the second connection portion It may include more wealth. According to such a configuration, it is possible to more efficiently connect and separate the pole pieces through the selective connection of the connecting parts separated from each other.

In addition, the pole piece connecting portion further includes a third connecting portion in contact with the first connecting portion and a fourth connecting portion in contact with the second connecting portion, and the connection selector further selectively performs interconnection and separation of the third connecting portion and the fourth connecting portion. can do. According to such a configuration, the connection between the pole pieces can be efficiently performed with different thicknesses as needed.

In addition, the pole piece connecting portion further includes a fifth connecting portion in contact with the third connecting portion and a sixth connecting portion in contact with the fourth connecting portion, and the connection selector further selectively performs interconnection and separation of the fifth connecting portion and the sixth connecting portion. can do. According to such a configuration, according to such a configuration, it is possible to more efficiently perform the connection between the pole pieces in a variety of thicknesses as needed.

According to the present invention, effective lifting is performed by preventing the saturation of magnetic flux in the lifting object by connecting the pole piece connecting portion of an appropriate thickness according to the lifting object between the pole pieces, thereby preventing malfunction of the rotating magnet regardless of the thickness of the lifting object. be able to do

In addition, it is possible to prevent the saturation of magnetic flux in the lifting object by directly fastening and releasing the connecting member of an appropriate thickness to the pole pieces as necessary.

In addition, it is possible to more efficiently connect and separate the pole pieces through the selective connection of the connecting parts separated from each other.

In addition, the connection between the pole pieces can be efficiently performed with different thicknesses as needed.

In addition, according to such a configuration, it is possible to more efficiently perform the connection between the pole pieces with more various thicknesses as needed.

1 is a schematic cross-sectional view of an example of a conventional magnetic lift device.
2 is a schematic block diagram of a magnetic lift apparatus according to an embodiment of the present invention;
3 to 6 are schematic cross-sectional views of a magnetic lift device according to the first embodiment of FIG. 2 ;
7 to 9 are schematic cross-sectional views of a magnetic lift device according to the second embodiment of FIG. 2 ;
10 to 13 are schematic cross-sectional views of a magnetic lift device according to a third embodiment of FIG. 2 ;

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

2 is a schematic block diagram of a magnetic lift apparatus according to an embodiment of the present invention. In FIG. 2 , the magnetic lift device 100 includes a fixed permanent magnet 110 , a first pole piece 120 , a second pole piece 130 , a rotating permanent magnet 140 , a magnet rotating part 150 , and a pole piece connection part. 160 , and a connection selection unit 170 . The first pole piece 120 is magnetically connected to the N pole of the fixed permanent magnet 110 , and the second pole piece 130 is magnetically connected to the S pole of the fixed permanent magnet 110 .

The rotating permanent magnet 150 has a first arrangement state in which the N pole is magnetically connected to the second pole piece 130 and the S pole is magnetically connected to the first pole piece 120, and the N pole is the second pole piece The first pole piece 120 is magnetically connected and the S pole is rotatably configured to be selectively disposed between the second arrangement state magnetically connected to the second pole piece 130 .

The magnet rotating unit 150 rotates the rotating permanent magnet to generate a transition between the first arrangement state and the second arrangement state, and the magnetic force applied to the lifting object through the first pole piece 120 and the second pole piece 130 . Control.

3 to 6 are schematic cross-sectional views of a magnetic lift device according to the first embodiment of FIG. 2 . 3 to 6, the magnetic lift device 100 includes a fixed permanent magnet 110, a first pole piece 120, a second pole piece 130, a rotating permanent magnet 140, a magnet rotating unit 150, And it can be seen that it includes a pole piece connecting part 160 .

The first pole piece 120 and the second pole piece 130 are made of a ferromagnetic material such as iron and have a working surface that can act in contact with the lifting object. The rotating permanent magnet 140 is in a first arrangement state (Fig. 3 and 4), the N pole is magnetically connected to the first pole piece 120, and the S pole is magnetically connected to the second pole piece 130 in close proximity to the second It is rotatably arranged so as to be switched between the arrangement states (the arrangement states in Figs. 5 and 6).

More specifically, the rotating permanent magnet 140 is disposed between the first pole piece 120 and the second pole piece 130 , and magnetically between the first pole piece 120 and the second pole piece 130 . can be connected to However, when the rotating permanent magnet 140 is in the first arrangement state and the second arrangement state, magnetic flows in opposite directions are formed, respectively.

The rotating permanent magnet 140 is preferably configured to be rotatable by minimizing friction. In addition, in the first arrangement state and the second arrangement state, the closer the separation distance between the first pole piece 120 and the second pole piece 130 is, the greater the magnetic flow can be formed.

The 'magnetic connection' between the rotating permanent magnet 140 and the pole pieces 120 and 130 means the pole pieces 120 and 130 by the magnetic force of the rotating permanent magnet 140 even though they are not in direct contact. It includes those spaced apart enough to allow magnetic flow to be formed.

Meanwhile, the rotating permanent magnet 140 exemplifies a structure in which a permanent magnet is formed into a specific shape in the present embodiment, but is not limited thereto, and may be composed of a combination of a permanent magnet and a pole piece. The fixed permanent magnet 110 is arranged such that the N pole is in contact with the first pole piece 120 and the S pole is in contact with the second pole piece 130 . The fixed permanent magnet 110 is preferably positioned closer to the working surfaces 111 and 121 than the rotating permanent magnet 140 .

The magnet rotating unit 150 may be implemented in various forms, but as shown in FIGS. 3 to 6 , it will be generally implemented in the form of a coil 150 . The coil 150 may be wound around at least one of the first pole piece 120 and the second pole piece 130 .

The coil 150 may be disposed at an appropriate position for changing the magnetic flow, and FIGS. 3 to 6 illustrate that it is disposed between the rotating permanent magnet 140 and the fixed permanent magnet 110, and effective magnetic flow control In this arrangement, such an arrangement is preferable.

The pole piece connection part 160 magnetically connects the first pole piece 120 and the second pole piece 130 with a preset thickness to prevent saturation of magnetic flux in the lifting object. According to this configuration, by connecting the pole piece connecting portion 160 of an appropriate thickness according to the lifting object between the pole pieces 120 and 130, the saturation of magnetic flux in the lifting object is prevented, so that the rotating magnet is irrespective of the thickness of the lifting object. It is possible to perform effective lifting by preventing the malfunction of

In this case, the pole piece connecting portion 160 may contact the first pole piece 120 and the second pole piece 130 , respectively. 3 to 6 show examples in which the pole piece connection part 160 is implemented in a single bar shape to contact the first pole piece 120 and the second pole piece 130, respectively.

By adding a magnetic field adjusting device (bar) capable of adjusting a magnetic field applied to an object in a conventional magnetic lift, it is possible to lift plates of various thicknesses and weights. At this time, various types of fixing devices such as bolts can be used to add/remove bars according to the condition of the plate (thickness, weight, etc.).

In addition, the pole piece connecting portion 160 may include a first connecting portion 161 in contact with the first pole piece 120 and a second connecting portion 162 in contact with the second pole piece 130 , in this case, The connection selection unit 170 selectively performs interconnection and separation of the first connection unit 161 and the second connection unit 162 .

In this case, the pole piece connection part 160 further includes a third connection part 163 in contact with the first connection part 161 and a fourth connection part 164 in contact with the second connection part 162 , and a connection selection part 170 . ) may further selectively perform interconnection and separation of the third connection part 163 and the fourth connection part 164 .

7 to 9 are schematic cross-sectional views of a magnetic lift device according to the second embodiment of FIG. 2 . 7 to 9 , the pole piece connection unit 170 is implemented in the form of a magnetic field control device disposed in an enclosure, and the first connection unit 161 to the fourth connection unit 164 are connected and separated in various combinations of shapes. An example is shown.

According to this configuration, the connection or separation of the pole piece connection unit 170 can be performed manually or automatically without a fixing device such as a bolt, so that the use of the pole piece connection unit 160 in the first embodiment is cumbersome. can be reduced,

More specifically, the magnetic field control device is composed of one layer or more layers composed of two separating plates, and thereby the two separating plates are left and right in consideration of the state (thickness, weight) of the object to be lifted. By separating the edges, it is possible to adjust the magnetic field applied to the object.

Accordingly, when the magnetic saturation phenomenon occurs because the thickness of the object is thin, the object can be lifted by combining all the separators. By allowing all the magnetic fields to flow through the object, it is possible to raise the object by increasing its power.

In addition, the pole piece connection part 170 further includes a fifth connection part 165 in contact with the third connection part 163 and a sixth connection part 166 in contact with the fourth connection part 164 , and a connection selection part 170 . ) may further selectively perform interconnection and separation of the fifth connection part 165 and the sixth connection part 166 .

10 to 13 are schematic cross-sectional views of a magnetic lift device according to a third embodiment of FIG. 2 . In the third embodiment, it can be confirmed that the connecting parts 165 and 166 are added one more step than in the second embodiment, and the number of stages of the connecting parts may be further added if necessary. According to such a configuration, it is possible to more efficiently perform the connection between the pole pieces in a variety of thicknesses as needed.

In summary, an object of the present invention is to prevent magnetic saturation according to the state (thickness, weight, etc.) of an object by using a magnetic field control device, and thereby prevent malfunction of a rotating magnet and enable accurate operation of a magnetic lift.

In the magnetic lift according to the prior art, when the magnetic saturation phenomenon occurs because the thickness of the object is thin, the rotating magnets are not aligned in a predetermined direction, so a malfunction occurs and the object cannot be lifted.

In the present invention, by separating/combining the separation plate of the magnetic field adjusting device according to the thickness of the object, the magnetic saturation phenomenon in the object is prevented, and various objects can be lifted without malfunction by inducing the correct operation of the rotating magnet. In addition, in the case of using the present invention, it is possible to prevent a falling object accident by preventing a malfunction when lifting an object in the field.

Although the present invention has been described with reference to some preferred embodiments, the scope of the present invention should not be limited thereto, but should also extend to modifications or improvements of the above embodiments supported by the claims.

100: magnetic lift device
110: fixed permanent magnet
120: first pole piece
130: second pole piece
140: rotating permanent magnet
150: magnet rotating part, coil
160: pole piece connection
161: first connection part
162: second connection part
163: third connection part
164: fourth connection part
165: fifth connection part
166: sixth connection part
170: connection selection unit

Claims (5)

fixed permanent magnet;
a first pole piece magnetically connected to the N pole of the fixed permanent magnet;
a second pole piece magnetically connected to the S pole of the fixed permanent magnet;
The N pole is magnetically connected to the second pole piece, the S pole is magnetically connected to the first pole piece, and the N pole is magnetically connected to the first pole piece. a rotating permanent magnet rotatably configured such that the S pole is selectively disposed between the second arrangement state in which the second pole piece is magnetically connected;
a magnet rotating unit for controlling a magnetic force applied to a lifting object through the first pole piece and the second pole piece by rotating the rotating permanent magnet to generate a transition between the first arrangement state and the second arrangement state; and
and a pole piece connection part having a preset thickness for magnetically connecting the first pole piece and the second pole piece to prevent saturation of magnetic flux in the lifting object,
The pole piece connecting portion includes a first connecting portion in contact with the first pole piece and a second connecting portion in contact with the second pole piece,
The magnetic lift apparatus according to claim 1, further comprising a connection selector for selectively performing interconnection and separation of the first connection part and the second connection part.
delete delete The method according to claim 1,
The pole piece connection part further includes a third connection part contacting the first connection part and a fourth connection part contacting the second connection part,
The magnetic lift device, characterized in that the connection selector further selectively performs the interconnection and separation of the third connection portion and the fourth connection portion.
5. The method according to claim 4,
The pole piece connection part further includes a fifth connection part contacting the third connection part and a sixth connection part contacting the fourth connection part,
The magnetic lift device, characterized in that the connection selector further selectively performs the interconnection and separation of the fifth connection part and the sixth connection part.

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