KR102140182B1 - Apparatus for collecting of foreign substance - Google Patents

Abstract

The embodiment includes a collecting device disposed on the transport line of the strip to collect foreign substances using magnetic force, and a dust collecting device for collecting the foreign substances dropped out of the collecting device, wherein the collecting device includes an outer roll and the outer roll The inner roll disposed inside the outer roll, a magnetic force section and a non-magnetic section on the outer circumferential surface of the outer roll to form a magnet disposed on the outer circumferential surface of the inner roll, and a first driving unit for rotating the outer roll It is about. Accordingly, the foreign material collecting device may remove or minimize the possibility of surface defects that may occur on the strip by collecting foreign materials such as spatters using magnetic force.

Description

Foreign material collection device {APPARATUS FOR COLLECTING OF FOREIGN SUBSTANCE}

The embodiment relates to a collecting device for collecting iron foreign matter. In detail, the present invention relates to an apparatus for collecting foreign substances that collects and processes foreign substances of an iron component, such as spatters, generated by magnetic domain refinement of a grain-oriented electrical steel sheet using magnetic force.

In order to reduce the iron loss of the grain-oriented electrical steel sheet, a method of minimizing the magnetic domain by using a laser beam on the surface of the steel sheet to form a groove by melting is used.

As the grooves are formed on the surface of the steel sheet due to laser irradiation, foreign matter such as spatters is generated.

This foreign material is interposed between the roll and the strip, thereby causing surface defects of the strip, making it difficult to perform magnetic domain refinement of the grain-oriented electrical steel sheet for a long time. Accordingly, there is a need to develop a technology capable of reducing losses due to equipment shutdown by dramatically reducing the possibility of surface defects occurring on the steel sheet by removing the foreign matter.

1 is a view showing a dust collecting container for collecting foreign substances in the related art.

Referring to Figure 1, the foreign matter (D), such as the spatter, is attached to the cooling block of the magnetic domain refinement device (2) and is removed by the conventional dust collector (3). However, in the case of the dust collector 3, when the foreign matter hits the strip S and bounces over the dust collector 3, or when the dust collector 3 is full of foreign matter, a problem that the foreign matter cannot be collected occurs. Accordingly, since the magnetic domain refinement device 2 and the equipment have to be stopped, a problem occurs in that productivity is reduced. At this time, the strip (S) is transferred by the transfer roll (10).

Alternatively, a problem in which the foreign material is caught in the strip may be solved by using a technique for removing the foreign material using a brush. As a related invention, Korean Patent Registration No. 10-1739868,'A method and device for minimizing magnetic domains of grain-oriented electrical steel'.

However, since the brush is disposed in contact with the strip, when the foreign substance is attached to the brush, there is a problem that the surface defect of the strip occurs due to the foreign substance contacting the strip (S).

The technical problem to be achieved by the embodiment is to solve the above problems, by using a magnetic force to collect foreign matter, such as spatter, by providing a foreign matter collection device that can remove or minimize the possibility of surface defects that may occur on the strip.

In addition, by providing a screw conveyor in the dust collecting bin is collected, it provides a foreign matter collecting device capable of continuously processing the foreign matter collected in the dust receiving.

The problems to be solved by the embodiments are not limited to the problems mentioned above, and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

The subject, according to an embodiment, is disposed on a transport line of the strip, and includes a collecting device for collecting foreign substances using magnetic force and a dust collecting device for collecting the foreign substances dropped out of the collecting device, wherein the collecting device is external A roll, an inner roll disposed inside the outer roll, a magnet disposed on an outer circumferential surface of the inner roll such that a magnetic section and a non-magnetic section are formed on an outer circumferential surface of the outer roll, and a first driving unit for rotating the outer roll This is achieved by a foreign material collection device.

Here, the cross-section of the magnet may be formed in an arc shape, and an end of the magnet may form a predetermined angle θ based on the center C of the inner roll.

In addition, the outer roll may be disposed to be spaced apart from the strip at a predetermined distance (d1).

In addition, the inner circumferential surface of the outer roll may be disposed to be spaced apart from the magnet at a predetermined distance d2.

In addition, the dust receiving device is a casing in which the foreign matter dropped off the outer roll is accumulated; A screw conveyor disposed inside the casing; And it includes a second drive for rotating the screw conveyor, the foreign material accumulated in the casing by the rotation of the screw conveyor may be transferred to the bucket.

Here, the lower end of the casing may contact the outer circumferential surface of the outer roll.

And, the direction of the linear velocity at one point (P) of the outer circumferential surface of the outer roll may be the opposite direction to the conveying direction of the strip.

The apparatus for collecting foreign substances according to the embodiment having the above-described configuration can remove or minimize the possibility of surface defects that may occur on the strip by collecting foreign substances such as spatters using magnetic force.

In detail, by using a magnet arranged to form a magnetic section and a non-magnetic section on the outer roll, foreign matter can be collected in the magnetic section and removed from the non-magnetic section and transferred to a dust receiving device.

In addition, by arranging the outer roll to be spaced apart from the strip being conveyed at a predetermined distance, it is possible to prevent the contact between the outer roll and the strip.

In addition, by placing a screw conveyor on the dust collecting device where the foreign material is collected, the foreign material collected by the dust receiving device can be continuously transferred to the bucket.

Various and beneficial advantages and effects of the embodiments are not limited to the above, and may be more easily understood in the course of describing specific embodiments of the embodiments.

1 is a view showing a dust collecting container to collect the conventional foreign matter,
2 is a view showing a foreign material collection device disposed on the transport line of the strip,
3 is a view showing a double roll of a foreign material collection device according to an embodiment,
4 is a view showing the operation of the double roll of the foreign material collection device according to the embodiment,
5 is a view showing a dust collecting device of a foreign material collection device according to an embodiment.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as second and first may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the second component may be referred to as a first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as a second component. The term and/or includes a combination of a plurality of related described items or any one of a plurality of related described items.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but there may be other components in between. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding components are assigned the same reference numbers regardless of reference numerals, and redundant descriptions thereof will be omitted.

2 is a view showing a foreign material collection device disposed on a transport line of a strip, FIG. 3 is a view showing a double roll of a foreign material collection device according to an embodiment, and FIG. 4 is a double roll of a foreign material collection device according to an embodiment It is a view showing the operation of, and Figure 5 is a view showing a dust receiving device of the foreign matter collection device according to the embodiment. In FIG. 2, an arrow may indicate a moving direction of the strip S transferred by the transfer roll 10.

The apparatus for collecting foreign substances according to the embodiment may collect and process spatters, which are foreign substances (D) generated when forming the grooves of the strip (S) by magnetic domain refinement of the grain-oriented electrical steel sheet, using magnetic force. As shown in Figure 2, the foreign material collecting device may be disposed between the transfer rolls 10 on the transfer line of the strip (S).

2 to 5, the apparatus for collecting foreign substances according to the embodiment is disposed on the transfer line of the strip S, and the collecting apparatus 100 collects foreign substances using magnetic force, and is eliminated from the collecting apparatus 100 It may include a dust receiving device 200 for collecting the foreign matter (D) and a bucket 300 for storing the foreign matter (D) transferred from the dust receiving device 200.

The collecting device 100 rotates the outer roll 111, the inner roll 112 disposed inside the outer roll 111, the magnet 113 disposed on the outer circumferential surface of the inner roll 112, and the outer roll 111. The first driving unit 120 may be included.

Referring to FIG. 3, the outer roll 111, the inner roll 112, and the magnet 113 may form a double roll 110. Then, the double roll 110 is disposed in the width direction of the strip (S) can be adsorbed to the foreign matter (D) and the like to be transferred to the strip (S).

The outer roll 111 may be formed in a cylindrical shape. In addition, the outer roll 111 may be rotated by the second driving unit 120. At this time, the outer circumferential surface of the outer roll 111 may be disposed spaced apart from the strip (S) and a predetermined distance (d1). Accordingly, since the rotation of the outer roll 111 does not interfere with the transport of the strip S, it is possible to prevent the occurrence of defects such as flaws on the surface of the strip S. Here, the distance d1 between the outer circumferential surface of the outer roll 111 and the strip S may be referred to as a first distance. The first gap may be adjusted in consideration of the adsorption force by the magnetic force formed on the outer circumferential surface of the outer roll 111.

The inner roll 112 may be disposed inside the outer roll 111. At this time, the inner roll 112 may be fixed to prevent rotation. In addition, the outer circumferential surface of the inner roll 112 may be arranged to be spaced apart at a predetermined distance from the inner circumferential surface of the outer roll 111. Accordingly, the inner roll 112 may not interfere with the rotation of the outer roll 111.

The magnet 113 may be fixed by being attached to the outer circumferential surface of the inner roll 112. At this time, in consideration of the material and thickness of the outer roll 111, the magnet 113 may be arranged to be spaced apart from the inner circumferential surface of the outer roll 111 at a predetermined distance d2. Here, the distance d2 between the magnet 113 and the inner circumferential surface of the outer roll 111 may be referred to as a second interval, and the second interval may be adjusted in consideration of the magnetic force formed on the outer circumferential surface of the outer roll 111. Can.

3 and 4, the magnet 113 may be disposed to cover a part of the outer circumferential surface of the inner roll 112. As shown in FIG. 4, the cross section of the inner roll 112 in the radial direction may be formed in an arc shape. Here, the longitudinal direction of the inner roll 112 with respect to the center C of the inner roll 112 represents the axial direction, and a direction perpendicular to the axial direction may indicate the radial direction.

As illustrated in FIG. 4, one end 113a and the other end 113b of the magnet may achieve a predetermined angle θ based on the center C of the inner roll 112. In addition, the angle θ may be 30 to 60 degrees, and preferably 45 degrees.

As one end 113a and the other end 113b of the magnet 113 are arranged to be spaced apart in the circumferential direction, as shown in FIG. 4, the outer roll 111 has a magnetic force section (A) in which magnetic force is formed. And a non-magnetic section B in which magnetic force is released.

For example, the magnetic force is formed on the surface of the double roll 110 in the radial direction by the magnet 113, and the magnetic force section A is formed with a magnetic force along the circumferential direction of the outer roll 111, so that the foreign material D It may indicate the section to which this is attached. Accordingly, even if the outer roll 111 rotates, in the magnetic force section A, the foreign material D is rotated together with the outer roll 111 by the magnetic force.

In addition, the non-magnetic section (B) may indicate a section of the outer roll 111 in which magnetic force is not formed by the magnet. Accordingly, when the outer roll 111 rotates, when the foreign matter D attached to the outer circumferential surface of the outer roll 111 reaches the non-magnetic section B, the foreign matter D is separated and the dust receiving device 200 ).

That is, the double roll 110 includes a magnet 113 arranged to form a magnetic section A and a non-magnetic section on the outer circumferential surface of the outer roll 111, and the magnetic and external rolls of the magnet 113 ( Using the rotation of 111), the foreign matter D may be collected in the magnetic force section A, and the foreign matter D may be eliminated in the nonmagnetic force section B and transferred to the dust receiving apparatus 200.

Meanwhile, the first driving unit 120 may rotate the outer roll 111 using a gear device (not shown) or the like. Here, a motor may be used as the first driving unit 120.

The dust receiving device 200 may collect foreign matter D that has been removed from the collecting device 100. As described above, the foreign matter D dropped by the magnetic force of the magnet 113 and the rotation of the outer roll 111 may be collected by the dust receiving device 200.

The dust receiving device 200 may be disposed on the side of the moving direction of the strip S based on the collecting device 100.

2, 4 and 5, the dust receiving device 200 is a casing 210 in which foreign substances dropped out of the outer roll 111 are accumulated, and a screw conveyor 220 disposed inside the casing 210 And it may include a second driving unit 230 for rotating the screw conveyor 220.

The casing 210 may be formed to have a space therein. Accordingly, the foreign material D may be accumulated inside the casing 210.

The vertical cross-section of the casing 210 may be formed in a U-shape. In addition, the lower end of the casing 210 may contact the outer circumferential surface of the outer roll 111 to serve as a scraper. For example, when the lower end of the casing 210 is in contact with the outer circumferential surface of the outer roll 111, the foreign material (D) that is attached to the outer circumferential surface of the outer roll 111 and does not fall off from the non-magnetic section (B) and rotates together ) Is eliminated by the lower end of the casing 210 to move to the space.

At this time, in consideration of the contact between the lower end of the casing 210 and the lower side of the outer roll 111, the direction of the linear velocity at one point P on the outer circumferential surface of the outer roll 111 is as shown in FIG. 4. , It may be in the opposite direction of the transport direction of the strip (S).

And, the lower side of the casing 210, as shown in Figure 4, may be disposed parallel to the strip (S) to be transferred.

The screw conveyor 220 is disposed inside the casing 210 and can be rotated by the second driving unit 230. Here, a motor may be used as the second driving unit 230.

As the screw conveyor 220 rotates, the foreign material D accumulated inside the casing 210 may be transferred to the bucket 300, as shown in FIG. 5. Accordingly, the magnetic domain refinement process of the grain-oriented electrical steel sheet can be continuously maintained.

Bucket 300 may be provided as a container for holding the foreign matter (D).

Accordingly, the foreign material D transferred by the screw conveyor 220 may be contained in the inside of the bucket 300 through the opening formed on the top of the bucket 300.

On the other hand, the foreign material collecting device may further include a third driving unit (not shown) for rotating the inner roll 112 to adjust the placement position of the magnet 113 and a control unit (not shown) for controlling the third driving unit. have. In this case, the control unit may also control the first driving unit 120 and the second driving unit 230. Here, a motor may be provided as the third driving unit.

For example, the amount of production of the foreign material D may be increased according to the feed rate of the strip S and the size of the groove formed in the strip S.

Accordingly, the control unit may increase the rotation speed of the outer roll 111 by controlling the first driving unit 120 to improve the amount of foreign matter D collected by the double roll 110. In addition, the control unit may increase the rotation speed of the screw driver 220 by controlling the second driving unit 230 to improve the amount of foreign matter D transferred to the bucket 300.

At this time, as the rotational speed of the outer roll 111 increases, the arrangement position of the magnet 113 is adjusted based on the circumferential direction of the inner roll 112 to arrange the magnetic section A and the non-magnetic section B Needs to be adjusted. Accordingly, the control unit may control the third driving unit to adjust the arrangement of the magnetic force section (A) and the non-magnetic section (B).

Although described above with reference to preferred embodiments of the present invention, those skilled in the art variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You can understand that you can.

1: Foreign material collection device
100: collecting device 110: double roll
111: outer roll 112: inner roll
113: magnet
120: first driving unit
200: dust receiving device
210: casing 220: screw conveyor
230: second driving unit
300: bucket
S: Strip

Claims (8)

It is disposed on the transport line of the strip and includes a collecting device for collecting foreign substances by using magnetic force and a dust collecting device for collecting the foreign substances dropped out of the collecting device,
The foreign material is a spatter generated when forming a groove by irradiating a laser to the strip by magnetic domain refinement of a grain-oriented electrical steel sheet,
The collecting device
The outer roll is spaced apart from the strip to prevent the interference of the strip being moved by the transfer roll,
An inner roll disposed inside the outer roll,
Magnets disposed on the outer circumferential surface of the inner roll such that magnetic and non-magnetic sections are formed on the outer circumferential surface of the outer roll, and
It includes a first drive for rotating the outer roll,
The collecting device fits the strip and bounces off the dust collecting device that collects the spatter that passes over the dust receiving device using magnetic force. According to claim 1,
The magnet is formed in an arc shape in cross section,
A foreign material collecting device in which an end of the magnet forms a predetermined angle (θ) based on the center (C) of the inner roll. delete According to claim 1,
The outer peripheral surface of the inner circumferential surface of the magnet and the foreign matter collection device is disposed to be spaced apart at a predetermined distance (d2). According to claim 1,
The dust receiving device
A casing on which the foreign matter dropped off the outer roll accumulates;
A screw conveyor disposed inside the casing; And
It includes a second drive for rotating the screw conveyor,
The foreign material collected in the bucket is transferred to the bucket by the rotation of the screw conveyor. The method of claim 5,
The lower side end of the casing is a foreign material collection device in contact with the outer peripheral surface of the outer roll. The method of claim 6,
The direction of linear velocity at one point (P) of the outer circumferential surface of the outer roll is a foreign material collecting device that is opposite to the direction of transport of the strip. delete

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