KR20240005486A - Magnet apparatus for attaching strip - Google Patents

Abstract

The present invention provides a magnet device for attaching a thick plate including a plurality of rod-shaped magnets for safely transferring a material with a defective shape by expanding the contact area. In one embodiment, a frame member made of an insulating material is attached to the frame member. A connected power supply unit, provided inside the frame member, has a rod-shaped structure extending in a first vertical direction, a plurality of magnets arranged at regular intervals and the plurality of magnets penetrate, It includes a metal plate made of a soft material that connects a plurality of magnets and the power supply unit to transmit power supplied from the power supply unit to the plurality of magnets, wherein the magnet generates magnetic force by the power supplied therein. A magnet device equipped with an electromagnet for attaching a thick plate is provided.

Description

Magnet device for attaching thick plates {MAGNET APPARATUS FOR ATTACHING STRIP}

The present invention relates to a magnet device for attaching a thick plate including a plurality of rod-shaped magnets for safely transporting a material with a defective shape by expanding the contact area of the plate.

In general, in order to carry out the work of loading, transporting, and shipping heavy plates from the heating or rolling process in the heavy plate process, an appropriate voltage is applied to a magnet crane to pass current through it, and then an electromagnet is formed to adsorb and lift the plate. . At this time, in the heavy plate rolling process, shape defective material of the plate occurs due to various reasons such as rolling malfunction, poor cooling, and material defect, and the shape defective material is transferred to a straightener or gas cutter for shape correction by a magnet crane.

Figure 1 shows a portion of a conventional magnet crane (1).

As shown in Figure 1, the conventional magnet crane (1) has a flat contact surface between the magnet (2) and the thick plate (S), so when the shape defect is extreme, the contact surface of the magnet (2) is only a small portion. Depending on the attachment surface or linear attachment, falling may occur during transport. In addition, there is a problem that foreign substances such as metal pieces attached to the contact surface due to the residual magnetic force of the magnet 2 fall on the thick plate S, causing defects.

(Patent Document 1) KR 10-2002-0051636 A

The present invention is intended to solve the above problems, and its purpose is to provide a magnet device for attaching a thick plate that includes a plurality of rod-shaped magnets to safely transfer the material with a defective shape to the thick plate by expanding the contact area.

In order to achieve the above object, the present invention provides the following magnet device for attaching a thick plate.

In one embodiment, the present invention has a frame member made of an insulating material, a power supply connected to the frame member, and a rod-shaped structure provided inside the frame member and extending in a first vertical direction, and spaced at regular intervals. A metal made of a soft material that is provided with a plurality of magnets arranged to be spaced apart from each other and the plurality of magnets penetrate through the plurality of magnets, and connects the plurality of magnets and the power supply unit to transmit power supplied from the power supply unit to the plurality of magnets. It provides a magnet device for attaching a thick plate, including a plate, wherein the magnet is provided with an electromagnet that generates magnetic force by the supplied power.

In one embodiment, a guide hole may be formed on a lower surface of the frame member to guide movement of the plurality of magnets in the first direction.

In one embodiment, the other surfaces of the frame member except the lower surface may be made of an insulating material.

In one embodiment, a case is provided inside the frame member and surrounds the plurality of magnets and a metal plate, and the metal plate may be fixed to the case.

In one embodiment, the outer surface of the plurality of magnets may be made of a metal material for electromagnetic shielding.

In one embodiment, the metal material for electromagnetic shielding may be composed of at least one of Ag, Cu, ZnO, SnO2, Al, Ni, Co, and Cr.

In one embodiment, the metal plate extends in a second direction perpendicular to the first direction in a side cross-section, and a plurality of metal plates may be arranged to be spaced apart in a third direction perpendicular to the first and second directions. .

In one embodiment, it is located inside the case, and is installed at the upper end of each of the plurality of magnets, and may further include a position sensor that measures the distance from the inner upper surface of the case.

In one embodiment, it is connected to the position sensor and may further include a measuring unit that measures the shape of the steel plate with which the plurality of magnets come into contact according to the distance difference measured by the position sensor.

In one embodiment, it is installed on the frame member and may further include an air nozzle that receives air from an air supply unit and discharges air.

In one embodiment, it further includes a detection sensor connected to the plurality of magnets to detect the degree of attachment, and a control unit connected to the detection sensor and a power supply unit, wherein the control unit receives a signal from the detection sensor, and the power supply unit The power supplied to the metal plate can be adjusted.

Through the structure of the magnet crane described above, the present invention makes it possible to provide a magnet crane that includes a plurality of rod-shaped magnets for safe transport by expanding the contact area when transporting defective thick plate shape material.

Figure 1 is a schematic perspective view of a conventional magnet crane.
Figure 2 is a schematic perspective view of a magnet device for attaching a thick plate according to an embodiment of the present invention.
Figure 3 is a side cross-sectional view viewed from the direction I-I' of Figure 2.
Figure 4 is a side cross-sectional view viewed from the direction I-I' showing the use state of the magnet device for attaching a thick plate according to an embodiment of the present invention.
Figure 5 is a side cross-sectional view showing a state of use of a magnet device for attaching a thick plate according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the attached drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention may add, change, or delete other components within the scope of the same spirit, or create other degenerative inventions or this invention. Other embodiments that are included within the scope of the inventive idea can be easily proposed, but it will also be said that this is included within the scope of the inventive idea of the present application. In addition, in this specification, terms such as 'upper', 'top', 'upper surface', 'lower', 'lower', 'lower surface', 'side', etc. are based on the drawings and are actually elements or components. It may vary depending on the direction in which it is placed.

In addition, throughout the specification, the fact that a certain configuration is 'connected' to another configuration includes not only cases where these configurations are 'directly connected', but also cases where they are 'indirectly connected' with another configuration in between. means that In addition, 'including' a certain component means that other components may be further included rather than excluding other components, unless specifically stated to the contrary.

In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

Figure 1 shows a portion of a conventional magnet crane (1). As shown in FIG. 1, the contact surface of the magnet 2 of the magnet crane 1 is flat, so when a defective thick plate is attached, a small portion of the contact surface of the magnet 2 is attached or attached linearly, causing a falling plate. You can. The magnet device 100 for attaching a thick plate according to an embodiment of the present invention recognizes this problem and can be used in the magnet crane 1, which is a transfer device for correcting the shape of the thick plate, and uses an electromagnet to attach the steel plate (S). It is not limited to this if it can be transported.

2 to 4 show a magnet device 100 for attaching a thick plate according to an embodiment of the present invention. More specifically, Figure 2 is a perspective view schematically showing the magnet device 100 for attaching a thick plate according to an embodiment of the present invention, Figure 3 is a side cross-sectional view of Figure 2, and Figure 4 is a state diagram of Figure 3 in use. Hereinafter, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

The magnet device 100 for attaching a thick plate according to an embodiment of the present invention includes a frame member 110, a plurality of magnets 120, a metal plate 130, and a power supply unit 140. As shown in FIG. 2, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention can be transported or transported by connecting the frame member 110 by a connection portion 180. The connecting portion 180 may be made of a chain made of a metal material, etc., and may be connected by being inserted into the mounting portion 111 protruding from the upper surface of the frame member 110.

The frame member 110 may be provided in a box shape and may be made of an insulating material. In addition, the frame member 110 may have a space within which a plurality of the magnets 120 can be provided, and other surfaces except the lower surface may be made of an insulating material. In addition, the power supply unit 140 may be connected to the upper surface, and the power supply unit 140 penetrates the upper surface of the frame member 110 and connects the plurality of magnets 120 by a power supply line (not shown). can be connected to In addition, the frame member 110 may have a guide hole 110h formed on the lower surface to guide the plurality of magnets 120 to move in the vertical direction, and the guide hole 110h may be formed with a plurality of the magnets (110h). A plurality of magnets 120 may be formed in one-to-one correspondence, and the diameter may be formed to correspond to the size of the magnet 120. Meanwhile, the magnet 120 may be moved along the vertical direction, but may be moved obliquely based on the vertical direction depending on the shape of the steel plate (S) with which it is in contact, and may be moved inclinedly with respect to the diameter of the guide hole (110h). Accordingly, the inclination range of the magnet 120 based on the vertical direction can be adjusted.

The magnet 120 is provided inside the frame member 110 and may have a rod-shaped structure extending in the vertical direction, and an electromagnet (not shown) composed of an iron core coil may be built into the magnet 120. The electromagnet (not shown) may be independently connected to the power supply unit 140 and the power supply line (not shown), and may generate magnetic force using power supplied from the power supply unit 140.

Furthermore, the magnet 120 may be a housing 121 whose outer surface, excluding the lower surface, has a shielding structure capable of blocking magnetic force. For example, it may be a metal material for electromagnetic shielding, and more specifically, for the electromagnetic shielding. The metal material may be composed of at least one of Ag, Cu, ZnO, SnO2, Al, Ni, Co, and Cr. As a result, as shown in FIG. 4, the lower surface of the plurality of magnets 120 in contact with the steel plate (S) becomes one point, thereby increasing the entire area of the steel plate (S) and the area to which it is attached. . By this, it is possible to prevent failure due to the magnetic force between the plurality of magnets 120, and the magnetic force generated on the lower surface of the magnet 120 is used as a point to contact the steel plate ( It can precisely contact the curved or curved shape of S).

Meanwhile, in the specification of the present invention, in the cross-sectional view of FIG. 3, the vertical direction may be called the first direction, and in the cross-sectional view of FIG. 3, the direction perpendicular to the first direction, which is the vertical direction, may be called the second direction, A direction perpendicular to the second direction and the first direction may be called a third direction. That is, the magnet 120 may have a rod-shaped structure extending in the first direction and may be moved in the first direction. Additionally, in the magnet device 100 for attaching a thick plate according to an embodiment of the present invention, a plurality of the magnets 120 may be arranged to be spaced apart at regular intervals, for example, along the second and third directions. They may be arranged to be spaced apart at regular intervals.

The metal plate 130 may be provided with a plurality of magnets 120 penetrating, and the magnets 120 may be coupled to the metal plate 130 to move up and down, and the magnets 120 may be coupled to the metal plate 130 through a bolt and nut combination. Separation from the metal plate 130 can be prevented. At this time, the metal plate 130 may be made of a material with high electrical conductivity, thereby connecting the plurality of magnets 120 and the power supply unit 140 to receive power from the power supply unit 140. It can be delivered to a plurality of the magnets 120. In addition, the metal plate 130 may be made of a soft material, for example, high tensile steel or giga steel. Accordingly, when the plurality of magnets 120 rise or fall along the first direction, the metal plate 130 may also be deformed.

At this time, as shown in FIG. 3, the metal plate 130 may be formed to extend in a second direction perpendicular to the first direction on the side cross-section, and a plurality of metal plates 130 may be formed in a third direction perpendicular to the second direction. Can be placed spaced apart. That is, some of the plurality of magnets 120 may form a row along the second direction on the first metal plate 130a, and the first to fourth metal plates 130a, 130b, 130c, 130d) may be arranged to be spaced apart along the third direction.

Furthermore, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention may further include a case 150 provided inside the frame member 110. The case 150 may be coupled to the inside of the frame member 110 and may be provided to surround the plurality of magnets 120 and the metal plate 130. At this time, the metal plate 130 may be fixed to the case 150. For example, both end portions of the first to fourth metal plates 130a, 130b, 130c, and 130d may be fixedly coupled to the inner peripheral surface of the case 150, may be inserted and coupled, and the metal plates ( 130) is not limited to this if it can be fixed. As a result, the plurality of magnets 120 can move up and down around the reference point at which the metal plate 130 is fixed. Additionally, since the case 150 is connected to surround the plurality of magnets 120 and the metal plate 130, an operator can replace parts inside the case 150 or remove it for repair.

In addition, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention may further include a position sensor 160. The position sensor 160 is located inside the case 150, and may be installed at the upper end of each of the plurality of magnets 120, and can measure the distance from the inner upper surface of the case 150. there is. At this time, the position sensor 160 can measure the distance using the time difference between transmission and reception through ultrasonic waves.

Since the magnetic force of the magnet device 100 for attaching a thick plate according to an embodiment of the present invention may vary depending on the intensity of the power supplied by the power supply unit 140, the control unit (not shown) connected to the power supply unit 140 The power supplied from the power supply unit 140 to the metal plate 130 can be adjusted depending on the degree of attachment between the magnet 120 and the steel plate (S). In addition, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention may further include a detection sensor (not shown) that detects the degree of attachment of the magnet 120, and the detection sensor (not shown) and A control unit (not shown) connected to the power supply unit 140 may receive a signal from the detection sensor (not shown) and adjust the power supplied from the power supply unit 140 to the metal plate 130. For example, the power supplied to at least one of the first to fourth metal plates 130a, 130b, 130c, and 130d may be increased or decreased. In addition, unlike FIG. 2, the metal plate 130 is provided in plural pieces and can be connected one-to-one with the plurality of magnets 120, and can be connected to at least two of the magnets 120, so that the plurality of magnets 120 are connected to each other. The magnetic force of (120) can be partially controlled. At this time, the detection sensor (not shown) may be a sensor that detects the amount of current flowing in the coil embedded in the magnet 120 or detects leakage magnetic flux, and is connected to the position sensor 160 to communicate with the magnet 120. The degree of attachment between the magnet 120 and the steel plate (S) can be detected by detecting a change in the distance with the inner upper surface of the case 150.

According to the structure of the magnet device 100 for attaching a thick plate according to an embodiment of the present invention described above, when there is a shape defect during the transfer operation of the steel plate (S), the lower surface of the plurality of magnets 120 is one. It can become a point and be attached to the entire area of the steel plate (S), and the contact area can be formed wider than a conventional magnet formed in a flat surface.

In addition, the magnet device 100 for attaching a thick plate according to an embodiment of the present invention detects the degree of attachment between the magnet 120 and the steel plate (S) using a detection sensor (not shown) and attaches a plurality of the magnets 120. The magnetic force generated can be individually controlled or turned on/off. In addition, as the magnet 120 has a rod-shaped structure, the partial residual magnetic force is smaller than that of an existing flat magnet, so foreign substances or pieces of metal attached to the magnet 120 can be easily removed.

Figure 5 shows a magnet device 100 for attaching a thick plate according to another embodiment of the present invention. Hereinafter, a magnet device 100 for attaching a thick plate according to another embodiment of the present invention will be described with reference to FIG. 5, but description of parts that overlap with the magnet device 100 for attaching a thick plate described in FIGS. 2 to 4 will be omitted. and explains the differences.

The magnet device 100 for attaching a thick plate according to another embodiment of the present invention is installed on the frame member 110 and may further include an air nozzle 170 that receives air from the air supply unit 190 and discharges air. there is. There may be a plurality of air nozzles 170, and at least some of them may be provided between the plurality of magnets 120. By this, the air nozzle 170 can spray air to remove foreign substances or iron dust stuck to the magnet 120, and can be applied to the surface of the steel plate S before the transfer operation of the steel plate S. You can remove stuck foreign substances or iron filings.

In addition, the magnet device 100 for attaching a thick plate according to another embodiment of the present invention may further include a measuring unit 200 connected to the position sensor 160, and the measuring unit 200 is connected to the position sensor 160. ), and the shape of the steel plate (S) with which the plurality of magnets 120 are in contact can be measured according to the distance difference measured by the position sensor 160. For example, the measuring unit 200 can measure the shape of the steel sheet (S) according to the ultrasonic transmission and reception time difference of the position sensor 160, and more specifically, measure the shape defect of the steel sheet (S) or , a specific part of the shape defective part can be determined to be a part of the defective shape and provided as reference material during correction work. Furthermore, it is possible to prevent problems such as falling plates due to the defective shape in advance by controlling the power supplied to the magnet 120 located on the defective part by being connected to the control unit (not shown). In other words, the magnet device 100 for attaching a thick plate implements the shape of the steel plate (S) along with the transfer of the steel plate (S) and can be used as a flatness reference during straightening work.

In the above, the present invention has been described focusing on the embodiments, but the present invention is not limited to the above-described embodiments, and may be modified and implemented by those skilled in the art without changing the technical spirit of the present invention as claimed in the claims. Of course.

1: Magnet crane 2: Conventional magnet
100: Magnet device for attaching a thick plate 110: Frame member
110h: Guide hole 111: Mounting part
120: Magnet 130: Metal plate
130a, 130b, 130c, 130d: first to fourth metal plates
140: power supply unit 150: metal plate
160: Position sensor 170: Air nozzle
180: Connection 190: Air supply section
200: Measuring part S: Steel plate

Claims (11)

Frame members made of insulating material;
A power supply unit connected to the frame member;
a plurality of magnets provided inside the frame member, having a rod-shaped structure extending in a first vertical direction, and arranged to be spaced apart at regular intervals; and
A metal plate formed of a flexible material through which the plurality of magnets are provided and connected to the plurality of magnets and the power supply unit to transmit power supplied from the power supply unit to the plurality of magnets;
Includes,
The magnet is,
A magnet device for attaching a thick plate equipped with an electromagnet inside that generates magnetic force by the power supplied above.
According to claim 1,
The frame member is,
A magnet device for attaching a thick plate, wherein a guide hole is formed on the lower surface to guide the movement of the plurality of magnets in the first direction.
According to claim 2,
The frame member is,
A magnet device for attaching thick plates where all surfaces except the bottom are made of insulating material.
According to claim 2,
A case provided inside the frame member and surrounding the plurality of magnets and metal plates;
It further includes,
The metal plate is,
A magnet device for attaching a thick plate that is fixed to the case.
According to claim 4,
The plurality of magnets are,
A magnet device for attaching a thick plate whose outer surface is made of metal for electromagnetic shielding.
According to claim 5,
The metal material for electromagnetic shielding is,
A magnet device for attaching thick plates consisting of at least one of Ag, Cu, ZnO, SnO2, Al, Ni, Co, and Cr.
According to claim 4,
The metal plate is,
In a side cross-section, a magnet device for attaching a thick plate extends in a second direction perpendicular to the first direction, and has a plurality of magnets arranged to be spaced apart in a third direction perpendicular to the first and second directions.
According to claim 7,
A position sensor located inside the case, installed at the upper end of each of the plurality of magnets, and measuring the distance from the inner upper surface of the case;
A magnet device for attaching a thick plate further comprising a.
According to claim 8,
a measuring unit connected to the position sensor and measuring the shape of a steel plate with which the plurality of magnets come into contact according to the distance difference measured by the position sensor;
A magnet device for attaching a thick plate further comprising a.
According to claim 8,
an air nozzle installed on the frame member, receiving air from an air supply unit and discharging air;
A magnet device for attaching a thick plate further comprising:
According to claim 10,
A detection sensor connected to the plurality of magnets to detect the degree of attachment; and
A control unit connected to the detection sensor and power supply unit;
It further includes,
The control unit,
A magnet device for attaching a thick plate that receives a signal from the detection sensor and adjusts the power supplied from the power supply unit to the metal plate.

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