KR101639251B1

KR101639251B1 - Wringer Roll and Apparatus having the same for removing foreign materials

Info

Publication number: KR101639251B1
Application number: KR1020150101062A
Authority: KR
Inventors: 김성민
Original assignee: 주식회사 포스코
Priority date: 2015-07-16
Filing date: 2015-07-16
Publication date: 2016-07-13

Abstract

The present invention relates to a ringer roll main body rotatably disposed in contact with a strip; A hollow portion formed axially inside the ringer roll body; A tread portion formed in a groove shape on an outer peripheral surface of the ringer roll main body; And a plurality of suction holes connected to the tread portion from the hollow portion formed in the ringer roll main body, and a foreign matter removing device having the ringer roll. Accordingly, it is possible to prevent foreign matter such as a hydrochloric acid solution, a rinse solution and the like from being mixed in the strip by the pickling process, thereby improving the surface quality of the strip.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ringer roll,

The present invention relates to a ringer roll and a foreign substance removing apparatus having the same. More particularly, the present invention relates to a Wringer Roll for removing residues on a strip in a PCM (Pickling and Cold Rolling Mill) process in a cold rolling mill, and a foreign matter removing device having the Wringer Roll.

Generally, pickling and cold rolling mill (PCM) is a process of producing hot-rolled coil as a full hard steel sheet through pickling and cold rolling.

Particularly, in the cold rolling, the hot-rolled coil having the scale of the surface removed through a pickling process is continuously pressed down using 5 to 6 mill stands.

During cold rolling, a frictional force is generated between the strip and the stand roll. At this time, the lubricant and the cooling lubricant are sprayed to reduce the frictional resistance. However, if such rolling oil remains on the strip, the strip is contaminated and rust is generated, which degrades the quality of the strip.

In order to prevent foreign matter such as rolling oil from remaining on the strip, an air knife is disposed behind the final stand. The air knife is disposed on the upper and lower sides of the strip and ejects air onto the strip to remove the rolling oil on the strip. However, at this time, since the width of the strip passing through the final stand is variable, the air knife blows air out of the width of the strip to form a vortex.

For example, conventional techniques for removing water, a plating solution, and other contaminants remaining on the edge of a strip in a post-treatment process after a plating process of a product are performed by using a sensor and a camera for sensing strips, Is moved along the edge of the strip to remove moisture, plating liquid and other contaminants from the edges.

However, the vortex formed by the air knife in this way has a problem that the rolling oil, which has been removed from the outside, is transferred again onto the strip, thereby leaving rolling oil and foreign matter on the strip. Therefore, there is a problem that the quality of the strip is deteriorated such as contamination or rust of the strip.

In addition, the post-treatment process and other areas where moisture remains are scattered in the form of fine particles due to steam generation and other contaminants due to the temperature difference, thereby increasing the risk of detection errors and failures of the strip detection device, There is a problem such as a decrease in residual water removal efficiency due to a decrease in precision and a serious operation damage in case of an accident such as a break of a strip due to a collision with a strip, and a lot of cost for installation and maintenance of the apparatus.

Therefore, a ringer roll or the like can be used in the PCM process in order to improve the removal rate of the residue or the like.

1, a plurality of ringer rolls 2 used in a PCM process in a cold rolling plant are positioned between a rear end of a pickling tank and a rinse tank (pure spraying)) and a rinse tank To prevent the surface of other rolls in the facility from being contaminated or the surface of the strips to be free from defects such as residue on the strip. That is, the Ringer roll is an important facility for improving the plate surface quality in the pickling process.

However, as shown in Fig. 2 (a), the surface of the ringer roll has a non-uniform pattern, and thus, the residual water residue remaining on the strip is removed. Poor spuezing) may occur. As a result, as shown in Fig. 2 (b), a rinse mark formed on the strip is generated, resulting in a problem of product quality defects.

A related invention is a control method of a strip residual moisture removing apparatus of Korean Patent No. 10-0895077 (Apr. 20, 2009) of the present applicant.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a ringer roll for improving water-scarcity and the like by applying a tread portion to an outer circumferential surface, .

According to a preferred embodiment of the present invention, the above object is achieved by providing a ringer roll main body rotatably disposed on a strip; A hollow portion formed axially inside the ringer roll body; A tread portion formed in a groove shape on an outer peripheral surface of the ringer roll main body; And a plurality of suction holes connected to the tread portion from the hollow portion formed inside the ringer roll body.

The tread portion may include a circumferential tread groove formed along the circumferential direction of the ringer roll body and an axial tread groove formed obliquely to the direction opposite to the rotational direction of the ringer roll body with respect to the circumferential tread groove .

The axial tread grooves are formed to be connected to the circumferential tread grooves and may be formed from the circumferential tread grooves to the edges of the ringer roll main body.

The axial tread grooves include a plurality of axial main tread grooves formed to be inclined from the circumferential tread grooves in the direction opposite to the rotational direction of the ringer roll main body, And an end of the axial longitudinal tread groove may be connected to the suction hole.

In addition, the axial tread grooves may be formed to be connected to the circumferential tread grooves between at least two of the circumferential tread grooves.

According to a preferred embodiment of the present invention, the above object is achieved by a foreign matter removing apparatus for removing fluid foreign matter on a surface of a strip, comprising: a ringer roll described above; A vacuum pump unit; And a pipe connecting the hollow portion of the ringer roll to the vacuum pump portion, wherein the foreign matter is sucked into the hollow portion of the ringer roll by driving the vacuum pump portion.

The vacuum pump unit includes a motor generating a suction force; And a storage tank for storing the foreign substances sucked into the vacuum pump unit through the pipe.

The foreign matter removing device may further include a separator disposed between the ringer roll and the storage tank for separating the air contained in the foreign matter.

The apparatus may further include a driving unit for rotating the ringer roll in close contact with the strip.

The controller may further include a controller for controlling the ringer roll to be in close contact with the strip while being rotated through the driving unit.

The ringer roll and the foreign matter removing device having the above-described structure according to the present invention apply the tread portion to the outer circumferential surface to prevent foreign substances such as hydrochloric acid solution and rinse solution from being picked up by the pickling process, Quality can be improved.

That is, a tread portion may be formed on the surface of the ringer roll so that foreign matter such as a residue on the strip, a hydrochloric acid solution, a rinsing liquid, or the like can be introduced into the inside.

In addition, by forming the axial tread of the tread portion formed on the surface of the ringer roll so as to be inclined in the rotating direction of the roll, it is possible to further facilitate the induction of foreign matter through the centrifugal force.

In addition, a suction hole is formed at the end of the axial tread so as to be connected to a hollow portion inside the ringer roll, and foreign matter such as a residue, a hydrochloric acid solution and the like induced through the tread portion is completely removed by the Bernoulli principle and the cohesive force of the residual material Can be removed.

Therefore, the ringer roll and the foreign matter removing device having the ringer roll according to an embodiment of the present invention can completely remove foreign matter remaining on the surface of the strip by using the tread portion and the suction hole connected thereto.

1 is a view showing a pickling facility and a ringer roll,
2 is a view showing a rinsing roll formed on a ringer roll and a ringer roll in which surface abrasion occurs,
3 is a view showing a foreign matter removing apparatus having a ringer roll according to a preferred embodiment of the present invention,
4 is a view showing a relationship between a ringer roll and a strip according to a preferred embodiment of the present invention,
5 is a view showing a flow of foreign matter on the tread portion of a ringer roll according to a preferred embodiment of the present invention,
6 is a view showing a foreign matter sucked into the inside of a ringer roll according to a preferred embodiment of the present invention,
7 is a block diagram showing a foreign matter removing apparatus having a ringer roll according to a preferred embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms may be used solely for the purpose of distinguishing one element from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

In the description of the embodiments, when an element is described as being formed "on or under" another element, the upper or lower (lower) (on or under) all include that the two components are in direct contact with each other or that one or more other components are indirectly formed between the two components. Also, when expressed as 'on or under', it may include not only an upward direction but also a downward direction based on one component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless otherwise defined, terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art, and unless otherwise explicitly defined in the present application, It is not interpreted in formal sense.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

3 to 7, a foreign matter removing apparatus 1 according to a preferred embodiment of the present invention includes a plurality of ringer rolls 100, a driving unit 200, a vacuum pump unit 300, a pipe 400 connecting the ringer roll 100 and the vacuum pump unit 300, and a control unit 500.

The ringer roll 100 can remove the foreign matter M adhered to the surface of the strip S by pressing the strip S as shown in Figs. Here, the foreign matter M may be a residual material remaining on the strip S, a hydrochloric acid solution, a rinsing liquid, a rolling oil, or the like.

The ringer roll 100 may be formed of a material such as rubber.

The ringer roll 100 is rotated while pressing the strip S to move the strip S and at the same time the foreign matter M remaining on the surface of the strip S is sucked into the ringer roll 100 to be removed .

The ringer roll 100 includes a ringer roll body 110, a hollow portion 120 formed at the axial center of the ringer roll body 110, a tread portion 130 formed on the outer peripheral surface of the ringer roll body 110, And a suction hole 140 formed to pass through between the tread portion 130 and the tread portion 130.

The ringer roll body 110 may be formed in a cylindrical shape. That is, the ringer roll body 110 may be formed in a roller shape and installed at the upper and lower portions of the strip S, respectively. Here, the ringer roll body 110 may be formed of a material such as rubber.

The ringer roll body 110 can be moved by the driving unit 200 controlled by the control unit 500 to pressurize or release the strip S. [ In addition, the ringer roll body 110 may be rotated by the driving unit 200 to move the strip S.

The hollow portion 120 may be formed at an axial center along the axial direction of the ringer roll body 110. The hollow part 120 may be connected to the vacuum pump part 300 through the pipe 400.

The tread portion 130 may be formed on the outer peripheral surface of the ringer roll body 110 in a groove shape. That is, the tread portion 130 may be formed in a groove shape formed on the outer peripheral surface of the ringer roll body 110, as shown in FIG. 3 and FIG.

The fluidic foreign matter M remaining in the strip S flows into the tread portion 130 in the groove shape and then flows along the tread portion 130 when the strip S is closely contacted with the ringer roll body 110. [ Can be moved. That is, the tread part 130 can serve as an oil heater for guiding the flow of the fluid foreign matter M remaining in the strip S.

That is, when the strip S of the ringer roll body 110 is pressed, the foreign matter M remaining on the surface of the strip S may be guided by the tread portion 130.

4, the tread portion 130 is formed on the side of the axial edge of the ringer roll body 110 in consideration of the winding-in defective portion of the strip S. However, The present invention is not limited thereto and may be formed on the entire outer circumferential surface of the ringer roll body 110. That is, it is preferable that the tread portion 130 is formed on the axial edge side of the ringer roll body 110 in correspondence with the edge of the strip S which is a bundle section of the water defective portion.

3 to 5, the tread portion 130 may include a circumferential tread groove 131 and an axial tread groove 132. [

The circumferential tread grooves 131 may be formed along the circumferential direction of the ringer roll main body 110 and may be spaced apart from each other at a predetermined interval on the edge of the ringer roll main body 110. For example, the circumferential tread grooves 131 may be spaced apart from the edge of the ringer roll main body 110 at predetermined intervals in consideration of the number of defective portions of the strip S. FIG.

The axial tread grooves 132 may be formed to be connected to the circumferential tread grooves 131 and may be inclined at a predetermined angle with respect to the circumferential tread grooves 131.

For example, as shown in FIG. 4, the axial tread grooves 132 may be formed to be inclined in a direction opposite to the rotation direction of the ringer roll 100. The axial tread grooves 132 may be formed from the circumferential tread grooves 131 to the edges 111 of the ringer roll body 110.

The axial tread grooves 132 are formed from the circumferential tread grooves 131 to the corners 111 of the ringer roll main body 110. However, It will be appreciated that axial tread grooves 132 may be formed between at least two circumferential tread grooves 131 with another circumferential tread groove 131 adjacent the edge 111.

The foreign matter M flowing into the axial tread grooves 132 formed to be inclined in the direction opposite to the rotating direction of the ringer roll 100 during the rotation of the ringer roll 100 is moved along the rotation of the ringer roll 100 It can be easily guided to the outside of the ringer roll 100 by the centrifugal force.

On the other hand, the axial tread groove 132 may include an axial main tread groove 132a and an axial longitudinal tread groove 132b.

4, the axial main tread groove 132a is an axial tread groove formed obliquely in a direction opposite to the rotational direction of the ringer roll 100, and the axial longitudinal tread groove 132b is an axial tread groove And may be an axial tread groove formed obliquely in the direction opposite to the rotational direction of the ringer roll 100 from the groove 132a.

4, a suction hole 140 may be disposed at an end of the axial longitudinal tread groove 132b.

4 and 5, a portion of the fluid foreign matter M guided along the axial main tread groove 132a is guided to the axial longitudinal tread grooves 132b, As shown in FIG.

Another part of the foreign matter M may be discharged to the outside by the centrifugal force at the edge 111 of the ringer roll body 110 after moving along the axial main tread groove 132a. However, if the axial tread grooves 132 are formed between at least two circumferential tread grooves 131, the foreign matter M may be sucked through only the suction holes 140. [

The suction hole 140 may be formed so as to connect the hollow portion 120 and the axial longitudinal tread groove 132b of the tread portion 130. That is, the suction hole 140 is formed to extend from the hollow portion 120 to the outer circumferential surface of the ringer roll body 110 in the radial direction of the ringer roll body 110, and the axial longitudinal tread grooves 132b As shown in FIG.

Therefore, the suction hole 140 connected to the axial longitudinal tread groove 132b minimizes the amount of the foreign matter M discharged to the outside of the ringer roll body 110 by the centrifugal force due to the rotation of the ringer roll body 110 can do.

The vacuum pump unit 300 may be connected to the vacuum pump unit 300 through the pipe 400.

The vacuum pump unit 300 may form the hollow portion 120 in the ringer roll 100 in a vacuum state or a high pressure state. Accordingly, as the hollow portion 120 becomes a vacuum state or a high-pressure state, the fluid foreign matter M guided to the axial longitudinal tread grooves 132b by the Bernoulli principle passes through the suction hole 140 to the hollow portion 120 ). The foreign matter M sucked into the hollow portion 120 can be moved to the vacuum pump portion 300 through the pipe 400.

Here, the vacuum pump unit 300 may include a motor 310 forming a suction force and a storage tank 320 storing foreign substances sucked through the vacuum pump unit 300. Further, a separator (not shown) may be further provided between the ringer roll 100 and the storage tank 320 to separate the gas contained in the foreign substances to be sucked.

The control unit 500 may control the driving unit 200 and the vibration pump unit 300.

The control unit 500 may control the driving unit 200 according to an electrical signal of a strip sensor (not shown) installed in the foreign matter removing apparatus 1 so that the ringer roll 100 is closely contacted and rotated. That is, the control unit 500 can control the ringer roll 100 to be in contact with or close to the strip S while rotating the ringer roll 100.

The control unit 500 may control the vibration pump unit 300 to suck foreign matter M into the hollow portion 120 of the ringer roll 100.

The foreign matter removing device 1 is configured to guide the foreign material M buried in the strip S by the pressing and rotation of the ringer roll 100 to the tread portion 130, So that it is sucked into the vacuum pump unit 100 and moved to the side of the vacuum pump unit 300 to completely remove foreign matter remaining on the surface of the strip S.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be understood that the present invention can be changed. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: Foreign body removing device
100: Ringer roll 200:
300: Vacuum pump 400: Piping
500:
S: Strip M: Foreign matter

Claims

A ringer roll main body rotatably disposed in contact with the strip;
A hollow portion formed axially inside the ringer roll body;
A tread portion formed on the outer circumferential surface of the ringer roll body in a groove shape to induce a flow of a fluid foreign substance; And
And a plurality of suction holes connected to the tread portion from the hollow portion formed in the ringer roll body,
The tread portion
A circumferential tread groove formed along the circumferential direction of the ringer roll body,
And an axial tread groove formed obliquely in a direction opposite to the rotational direction of the ringer roll body with respect to the circumferential tread groove,
The axial tread groove
A plurality of axial main tread grooves formed obliquely from the circumferential tread grooves in a direction opposite to the rotational direction of the ringer roll main body,
And a plurality of axial longitudinal tread grooves formed obliquely from the axial main tread grooves in a direction opposite to the rotation direction of the ringer roll main body,
The axial main tread grooves being formed from the circumferential tread grooves to the edges of the ringer roll body,
Part of the foreign matter moving along the axial main tread groove is discharged to the outside from the edge of the ringer roll body by centrifugal force due to rotation of the ringer roll body,
The remainder of the foreign matter is moved along the axial longitudinal tread grooves by the centrifugal force due to the rotation of the ringer roll main body and then sucked into the suction holes,
Wherein the ringer roll body is formed of a rubber material.

delete

The method according to claim 1,
Wherein the axial tread grooves are formed to be connected to the circumferential tread grooves between at least two of the circumferential tread grooves.

1. A foreign matter removing apparatus for removing fluid foreign matter on a surface of a strip,
The ringer roll according to any one of claims 1 to 5,
A vacuum pump unit;
And a pipe connecting the hollow portion of the ringer roll and the vacuum pump portion,
And the foreign matter is sucked into the hollow portion of the ringer roll by driving the vacuum pump portion.

The method according to claim 6,
The vacuum pump unit includes a motor generating a suction force; And
And a storage tank for storing the foreign substances sucked into the vacuum pump unit through the pipe.

8. The method of claim 7,
And a separator disposed between the ringer roll and the storage tank for separating air contained in the foreign matter.

The method according to claim 6,
And a driving unit for rotating the ringer roll in close contact with the strip.

10. The method of claim 9,
Further comprising a control unit for controlling the ringer roll to be in close contact with or close to the strip while rotating the ringer roll through the driving unit.