KR100723114B1 - An apparatus for inhailing dust on the surface of work roll - Google Patents

Abstract

The present invention relates to a device for sucking foreign matter remaining on a roll surface used in a rolling operation of a rolling mill.

The present invention is accommodated in the chamber 20 is moved forward and backward by the operating cylinder (10) to approach the surface of the roll member (R), when the air inlet from the air supply source 21 is received The tube member 25 for advancing the plurality of piston pins 27 by the inflating force generated, and the contact portion 31a in close contact with the left and right ends of the roll member R during the forward operation of the piston pin 27 ( The non-contacting part includes a header 30 integrally formed with a non-contact part 32 having a plurality of suction ports 34 formed on the front surface of the roll member R and a front surface maintaining a predetermined distance G therebetween. As a vacuum suction input of the vacuum suction device 36 connected in communication with the part 32, an effect of removing foreign matter adhering to the surface of the roll member R can be removed without damage to the roll surface.

Rolling mill, roll, chamber, tube member, vacuum suction device. Ceramic inlet

Description

Roll surface foreign matter suction device of rolling mill {AN APPARATUS FOR INHAILING DUST ON THE SURFACE OF WORK ROLL}

1 is a schematic view showing a roll surface foreign matter suction device of the rolling mill according to the present invention,

Figure 2 is a side view showing a roll surface foreign matter suction device of the rolling mill according to the present invention,

Figure 3 is a plan view showing a roll surface foreign matter suction device of the rolling mill according to the present invention.

 Explanation of symbols on the main parts of the drawings

10 .... Operation Cylinder 20 .... Chamber

21 .... Air source 25 .... Tube member

26 .... piston plate 27 .... piston pin

30 .... Headers 31a, 31b ... Contacts

32 .... Contacts 33 .... Pressing frame

34 .... suction port 36 .... vacuum suction device

The present invention relates to a device for sucking foreign matter remaining on the surface of the roll used in the rolling operation of the rolling mill, and more specifically, the dust remaining on the surface of the roll during the operation of rolling the plate by passing the steel sheet between the upper and lower working rolls And it relates to a roll surface foreign matter suction device of the rolling mill improved to remove the foreign matter efficiently without damaging the roll surface.

In general, a skin pass cold rolling mill for rolling a steel sheet or the like in a rolling facility of a steel mill in a dry state, as shown in FIG. 1, upper and lower work rolls 3a and 3b and upper and lower backup rolls 4a and 4b. When the roll member (R), such as) is placed in a vertically stacked structure and rolled under high pressure while passing a steel sheet between the upper and lower working rolls, the work roll in which dust, foreign substances, and fine iron generated in the factory are rolling When the rolling operation is carried out while the foreign matter is attached to the surface and the foreign matter is attached to the surface of the steel sheet, the steel sheet is rolled by the foreign material pressed on the surface of the roll to cause defects, thereby degrading the quality.

Such a work roll is designed with a roughness of about 1.0 μm on the surface of the roll, and foreign matters such as fine iron powder and dust are generated on the surface of the work roll, in which steel sheet rolling is directly performed.

Therefore, as a general countermeasure for removing foreign matter adhering to the roll surface, a brush roll having a brush made of a material such as nylon is placed in contact with the outer circumferential surface of the work roll and then rotated to remove the foreign matter on the roll surface. The foreign material on the roll surface was removed by employing a method or a method of arranging the pipe header so as not to contact the surface of the roll to remove foreign matter by vacuum or suction, or a combination thereof.

However, the conventional foreign material removal method using a brush requires a pressing device or a driving device, and requires a lot of installation space of the equipment in addition to the point of expensive equipment cost. Also, by rotating the brush roll in contact with the work roll in a direction opposite to the rotational direction of the work roll, foreign matters falling off the roll surface are likely to be reattached after being scattered. While the foreign matters are grown into large solids and fall off, the particles of particles smaller than the roughness of the surface of the roll cannot be completely removed, thereby increasing the frequency of exchange, thereby increasing the maintenance load.

In addition, the method of vacuum suction and removal from the suction header connected to the suction pipe is to inhale foreign matter by directly approaching the suction header without directly contacting the suction header, but the distance between the work roll and the suction header is limited by several mm. Due to this wide efficiency, it was impossible to inhale dust and foreign matter.

In addition, since the line speed of the rolling mill is processed at a highway of more than 1000mpm, a large suction device is required, and the suction method also has less foreign matter removal effect.

Therefore, the present invention has been proposed in order to solve the conventional problems as described above, the object is to remove the foreign matter adhered to the roll surface without damaging the roll surface, the occupied space is small, the structure is simple and the equipment maintenance cost is low It is an object of the present invention to provide a roll surface foreign matter suction device of a rolling mill.

As a technical configuration for achieving the above object, the present invention,

In the device for sucking and removing foreign matter adhering on the surface of the roll member,

A chamber member which is moved forward and backward by an operation cylinder to approach the surface of the roll member, a tube member which is accommodated in an inner space of the chamber and advances a plurality of piston pins by an expansion force generated when air is introduced from an air supply source; And a non-contact header including a non-contact portion integrally formed with a plurality of suction ports on the front surface of the roll member to maintain a constant distance between the contact portions in close contact with the outer circumferential surfaces of the left and right ends of the roll member during the forward operation of the piston pin. It is to provide a roll surface foreign matter suction device of the rolling mill, characterized in that the suction suction removal of foreign matter adhering to the surface of the roll member as a vacuum suction input of the vacuum suction device connected to the portion.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view showing a roll surface foreign matter suction device of the rolling mill according to the present invention, Figure 2 is a side view showing a roll surface foreign material suction device of the rolling mill according to the present invention, Figure 3 is a roll of the rolling mill according to the present invention It is a top view which shows the surface foreign matter suction apparatus.

As shown in Figs. 1 to 3, the apparatus 1 of the present invention is rolled like a work roll or a backup roll so as to be as close as possible without damage to the roll surface and attached to the roll surface by vacuum suction input to suck and remove foreign substances. Equipped with a rolling facility for rolling a steel sheet using the member R, such an apparatus 1 is composed of an operation cylinder 10, a chamber 20, a tube member 25, a header 30, and the like. .

That is, the actuating cylinder 10 is an actuating member which is fixedly installed in a housing (not shown) of the rolling mill so that the rod end corresponds to the surface of the roll member R, and operates the rod end forward and backward by the working fluid. The chamber 20 is mounted to the rod end of the operation cylinder 10 so as to be close to the surface side of the roll member (R) during the foreign matter removal operation.

The chamber 20 has a length equal to the width of the roll member R, and is a moving member of a rectangular parallelepiped having a predetermined internal space, and an air supply source 21 for supplying a working fluid such as air to the internal space. And a tube member 25 that is in communication with the air supply hose member 22 and expands upon inflow of air to generate an expansion force.

And, the piston pin (27) to be advanced to the roll member (R) side by the expansion force generated when the air inlet to the tube member 25 side on the front surface of the chamber 20 corresponding to the roll member (R) It consists of a plurality of.

Here, the piston pin 27 is fixed to the rear end on the piston plate 26 accommodated in the chamber 20 so that the forward movement by the same advance distance at the same time by the expansion force of the tube member 25, the outside It does not go away.

The tube member 25 connects the air supply hose member 22 to the rear surface opposite to the front surface of the chamber 20 corresponding to the piston pin 27 so as to perform the expansion force evenly in the roll width direction. The hose member 22 may include a control valve 22a so as to adjust the expansion force by appropriately adding or subtracting the air supply amount supplied to the tube member 25.

In addition, at the tip of the piston pin 27 that is moved forward when the tube member 25 is expanded, the pressing frame 33 is assembled with a header 30 consisting of the contact portions 31a, 31b and the non-contact portion 32. The contact parts 31a and 31b are bolt members not shown at left and right ends of the pressing frame 33 so as to correspond to left and right ends of the roll member R when the piston pin 27 moves forward. The non-contacting part 32 is replaceably assembled, and the non-contacting part 32 is not shown between the contact parts 31a and 31b facing each other so as to maintain a predetermined distance with the front surface of the roll member R. It is replaceably assembled as a member.

A plurality of suction openings 34 are formed on the front surface of the non-contacting portion 32 at predetermined intervals in the roll width direction, and the suction opening 34 is configured to communicate with the suction line 35 formed in the non-contacting portion 32. One end of the suction line 35 is connected in communication with the vacuum suction device 36 for generating a vacuum suction input when the power is applied and the suction hose member 37, and the foreign material suctioned and removed in the middle of the hose member 37. It is equipped with a filter bag (not shown) that can collect.

Here, the pressing frame 33 may be of a 'b' or 'c' shaped cross-sectional structure to increase the efficiency of the vacuum suction input for sucking the foreign matter secondary to the roll surface, the contact portion (31a) (31b) is The front surface is formed of a ceramic member having an arc-shaped cross section so as to be in close contact with the outer peripheral surfaces of the left and right ends of the roll member (R), the non-contact portion 32 is attached to the foreign matter larger than the predetermined interval (G) or roll member (R) It is composed of soft felt material to prevent surface damage of the roll when it is in contact with the surface.

In addition, the step between the contact portions 31a and 31b and the non-contacting portion 32 whose front surfaces are in close contact with the outer peripheral surfaces of the left and right ends of the roll member R may be maintained to be 0.5 to 1.0 mm so that the roll member R The constant distance G between the surface and the non-contact portion 32 can always be maintained at 0.5 to 1.0 mm.

The operation of the present invention having the configuration as described above will be described.                     

The apparatus of the present invention installed in the vicinity of the roll member (R) when the steel sheet surface defect is caused by foreign matter adhered to the roll surface during the operation of rolling the steel sheet by rolling the steel sheet between the upper and lower roll members (R) Use (1) to remove foreign materials without damaging the roll surface.

That is, when the operation cylinder 10 corresponding to each roll member R is moved forward to the maximum stroke, the rod end is moved forward to the roll surface side and the chamber 20 mounted at the rod end is brought close to the roll surface. . At this time, the operation cylinder 10 can be stopped at a position 5mm away from the surface of the roll member (R) the front surface of the contact portion (31a) (31b) that is the shortest part of the header 30 connected to the chamber 20 Since the stroke distance is set in advance, the header 30 is close to the roll surface so as not to reach the roll surface during the forward operation.

In this state, when the air supply source 21 is operated to supply air into the tube member 25 in communication with the air supply hose 22, the tube member 25 accommodated in the inner space of the chamber 20 is supplied. Since the volume is expanded by air and pushes the piston plate 26 toward the front side, a plurality of piston tone pins are connected to the rear end of the piston plate 26 and assembled forward and backward on the front surface of the chamber 20. Reference numeral 27 is a forward movement to the surface side of the roll member (R) at the same time.

As a result, the header 30 of the pressing frame 33, which is mounted at the tip of the piston pin 27 and is positioned at a distance from the surface of the roll member R, is advanced. The contact portions 31a and 31b of 30 are in close contact with the left and right ends of the roll member R.                     

Here, the pressure for pressing the header 30 toward the roll member R by the air supplied to the tube member 25 side is a pressure reduction force that can be adjusted in the range of about 0.5 to 3.0 kg / cm 2, and thus the roll The arc-shaped front surface of the ceramic member, which is the contact portions 31a and 31b, is smoothly in close contact with the outer peripheral surfaces of the left and right ends of the member R, and the contact portions 31a and 31b are evenly in contact with the left and right sides. At this time, the contact portions 31a and 31b in close contact with the outer circumferential surfaces of the left and right ends of the roll member R, which are rotationally driven for rolling the steel sheet, are made of a ceramic member worn about 0.1 mm / month, and thus the contact portions 31a and 31b. ) Is a long service life and can be replaced with a new one when the roll member R is replaced.

Subsequently, when the contact portions 31a and 31b provided at the left and right ends of the header 30 are in close contact with the left and right ends of the roll member R with light pressure, the contact portions 31a and 31b are disposed between the contact portions 31a and 31b. The non-contact portion 32 has a roll surface of the roll member R and a plurality of suction ports 34 due to a step formed between 0.5 and 1.0 mm between the contact portions 31a and 31b and the contact portion 32. It is possible to maintain a predetermined interval (G) between the front surface of the non-contact portion 32 is formed the same as the step. Accordingly, the distance between the surface of the roll member R and the non-contact portion 32 of the header 30 can be arranged at the shortest distance, and the step between the contact portions 31a, 31b and the non-contact portion 32 is reduced. Can be regulated by

While the piston pin 27 is advanced by the expansion force of the tube member 25 as described above, the contact portions 31a and 31b of the header 30 to be advanced are in close contact with the left and right ends of the roll member R. The non-contact portion 32 maintains a predetermined distance from the roll surface, and operates the vacuum suction device 36 for generating a vacuum suction input, thereby allowing the non-contact portion 32 to enter the non-contact portion 32 through the suction hose member 37. When the vacuum suction input is transmitted to the suction line 35 provided, the suction port 34 and the suction line 35 communicate with each other at a predetermined distance G from the surface of the roll member R that is rotated in one direction. Inhaling and removing all foreign matter and dust attached to the surface of the roll member (R), the removed foreign matter is filtered through a filter bag (not shown) mounted in the middle of the hose member 37, Only clean air is exhausted to the outside.

Here, the vacuum suction device 37 may incorporate a foreign matter storage bag for storing the foreign substances and dust removed by forced suction, and employ an industrial vacuum cleaner having a vacuum pressure of 3500 mmAq and an output of 5.5 Kw.

On the other hand, when all the work to suck and remove the foreign matter attached to the surface of the roll member (R) is finished and the rolled steel sheet having excellent surface quality of the steel sheet is produced, after confirming this, the operation of the vacuum suction device 36 is stopped To stop the generation of the vacuum suction input at the suction port 34 and to stop the air supply from the air supply source 21 to the tube member 25 side to roll the contact portions 31a and 31b of the header 30 to the roll surface. After the primary spaced apart from the back, the rod front end of the operation cylinder 10, which has been operated forward, by returning the chamber 20 to the original position, it is to wait until the next foreign matter suction operation.

Therefore, according to the present invention having the above-described configuration, the suction efficiency is generated by removing the foreign matter and dust adhering to the roll surface by generating a vacuum suction input while maintaining a constant distance between the roll surface of the roll member and the suction port at the shortest distance. This high, even in the roll member rotating on the highway can obtain a constant suction efficiency, it is also possible to use the vacuum suction input of the industrial cleaner can maintain the equipment cost cheaply.

In addition, since the ceramic member, which is a contact portion in close contact with the left and right ends of the roll member, is pressed at an equal pressure by light pressure under the air pressure supplied to the tube member side to maintain a constant distance between the roll surface and the suction port, the contact portion that is a consumption member. It is possible to extend the service life of the non-contact portion is formed of a felt material of the soft material is formed in the suction port can prevent the roll surface damage even in contact with the roll surface due to excessive wear of the contact portion.

In addition, since the occupied space is smaller than that of the conventional brush roll, and a driving device for rotating and driving it is unnecessary, the occupied space is small, the installation cost is low, and the fine suction in the roughness is used as the vacuum suction input of the header approaching the roll surface at the minimum interval. Since even dust can be sucked out and removed reliably, the surface gloss of the rolled steel sheet can be made beautiful and the effect of producing a rolled product of excellent quality can be obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (4)

In the device for sucking and removing foreign matter adhering on the surface of the roll member (R), The chamber 20 is moved forward and backward by the operation cylinder 10 to approach the surface of the roll member (R), and is received in the air flow from the air supply source 21 is received in the interior space of the chamber 20 Tube member 25 for advancing the plurality of piston pins 27 by the expansion force, and contact portions 31a and 31b in close contact with the outer peripheral surfaces of the left and right ends of the roll member R during the forward operation of the piston pin 27. The non-contact portion including a header 30 integrally formed with a non-contact portion 32 formed with a plurality of suction ports 34 on the surface of the roll member (R) and the front surface maintaining a predetermined distance (G) between the () A foreign material suction device for a roll surface of a rolling mill, characterized in that the foreign matter adhering to the surface of the roll member (R) is suctioned off as a vacuum suction input of the vacuum suction device (36) connected in communication with (32). The method of claim 1, The piston pin 27 is a rear end of the rolling mill, characterized in that the rear end is fixed on the piston plate 26 accommodated in the chamber 20 by the expansion force of the tube member 25 at the same time forward operation Roll surface foreign material suction device. The method of claim 1, The contact portions 31a and 31b are made of a ceramic member having an arc-shaped cross section in front surface so as to be in close contact with the outer peripheral surfaces of the left and right ends of the roll member R, and the non-contact portion 32 is larger than the predetermined interval G. Roll surface foreign material suction device of the rolling mill, characterized in that consisting of a soft felt material to prevent damage to the roll surface when foreign matter is attached or when the surface contact with the roll member (R). The method of claim 1, The step (G) between the surface of the roll member (R) and the non-contact portion 32 is 0.5 to 1.0 such that the step between the contact portions 31a and 31b and the non-contact portion 32 is 0.5 to 1.0 mm. Roll surface foreign matter suction device of the rolling mill, characterized in that the holding in mm.

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