KR100928822B1 - Slab bar guide of rough rolling machine with rotary roller - Google Patents

Abstract

The present invention relates to a slab bar guide device of a rough rolling machine equipped with a rotary roller that can reduce the frictional resistance with the entering slab.

The present invention includes an accommodating part (10) having an exposed hole (11) formed in the upper surface of the apron (151) to depress a predetermined size of internal space in the body of the apron (151); At least two contact rollers 24 having a part of an outer surface exposed through the exposure hole 11 to be in contact with the front and rear ends of the slab bar S are rotatably disposed in the accommodating part 10. A rotating body 20; And a rotating motor 30 for rotating the rotating body 20 in the receiving part 10 so that the outer surface of the contact roller 24 is exposed through the exposure hole 11.

According to the present invention, it is possible to prevent the occurrence of defects on the surface of the strip due to friction or impact between the apron and the slab bar by minimizing the friction of the slab bar guider with the apron or guiding the slab bar to guide the slab bar to the rolling stand. have.

Roughing mill, apron, exposure hole, contact roller, rotating motor, exposure mode, non-exposure mode

Description

SLAB BAR GUIDING DEVICE HAVING A ROTARY ROLLER IN ROUGHING MILL}

1 is a front view showing a slab bar guider employed in a general rough rolling mill,

Figure 2 is a side view showing a slab bar guider employed in a general rough rolling mill,

3 is an external view illustrating a slab bar guide device of a rough rolling machine equipped with a rotary roller according to the present invention;

Figure 4 is a block diagram showing a slab bar guide device of the rough rolling machine equipped with a rotary roller according to the present invention,

Figure 5 is a cross-sectional view showing a slab bar guide device of the rough rolling machine equipped with a rotary roller according to the present invention,

Figure 6 is a state diagram showing the slab bar guide device of the rough rolling machine equipped with a rotary roller according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ..... Receptacle 11 .....

20 ..... Rotating body 21,22 ... front and rear circular rotating plate

21a, 22a ... central hole 23 ..... axis of rotation

24 ..... Contact Roller 24a .... Roll Shaft                 

24b .... Bearing member 30 ..... Rotary motor

110,120 ... upper and lower work roll 130 .... rolling stand

150 .... Slavic Bar Guider 151 .... apron

The present invention relates to a slab bar guide device of a rough rolling machine equipped with a rotary roller that can reduce the frictional resistance with the slab bar, and more specifically, to minimize the friction with the apron of the slab bar guider for guiding the slab bar to the rolling stand. The present invention relates to a slab bar guide device of a rough rolling machine equipped with a rotary roller which is improved to prevent the occurrence of defects on the surface of the rolled material due to friction or impact between the apron and the slab bar so that there is no contact with the friction object.

In general, the cast steel cast in the casting process of the steel mill is directly put into the rolling mill to be processed into a variety of products, but most of the various rolling mills are made into a variety of shapes and sizes to suit each application, and the rough rolling, such as The rough rolling mill used in the rolling process is a facility for rolling slabs on a rectangular cross section into bars for finishing rolling.

Figure 1 is a front view showing a general roughing mill, Figure 2 is a side view showing a general roughing mill, as shown, the upper and lower work rolls for rolling the slab bar (S), the upper and lower, as a roll 110 120, upper and lower backup rolls 111 and 121, and a rolling stand 130 for supporting them, and the rolled stand 130 in one direction by the table roller 155 to the entrance side Edge rolls 141 in contact with the left and right edges of the slab bar S and the slab bar guider 150 for guiding the entry of the slab bar S are installed between the edge rolls 141 in a vertically symmetrical structure. do.

The edge roll 141 is assembled with the choke portion 142 mounted on both ends of the roll so as to be slidable to the slider 143 so as to be horizontally movable in the width direction of the slab bar S so as to space the gap therebetween. The slab bar guider 150 is configured to be adjusted according to the width of the slab bar S, and the upper and lower aprons 151 corresponding to the upper and lower surfaces of the slab bar S are disposed. The upper and lower apron 151 is provided with a slider 152 for horizontally moving in the width direction of the slab bar (S).

Accordingly, the slab bar (S) entering through the table roller 155 installed on the mouth side of the slab bar guider 150 passes through the upper and lower apron 151, the edge roll 141, the feeding roller 156. After entering), the slab bar is rolled while passing between the upper and lower work rolls 110 and 120 of the rolling stand 130.

The height of the table roller 155 and the lower side when the slab bar S having a high temperature heated in a heating furnace, which is a pre-process during the rolling process, passes between the upper and lower prolons 151. The front end and the rear end of the slab bar S come into contact with the apron 151 due to the height difference between the upper surfaces of the apron 151, causing a defect on the surface of the slab bar S.

Accordingly, when the slab bar (S) having the surface defects as described above is rolled between the upper and lower work rolls 110 and 120 which are the post-process as they are, the defective surface in which the surface defects remain is produced. There was a problem of lowering product reliability.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, the object of which is to minimize the friction between the upper and lower parts of the slab bar and the upper and lower parts of the slab bar guider to enter between the upper and lower work roll of the rolling stand The present invention provides a slab bar guide device for a rough rolling mill equipped with a rotary roller which can improve the quality of the rolled steel sheet by preventing the occurrence of defects on the surface of the steel sheet by friction or impact between the apron and the slab bar. .

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

In the roughing mill for rolling the slab bars with a rolling stand having upper and lower work rolls, and a slab bar guider having upper and lower aprons for guiding the slab bars entering in one direction between the roll members.

Receiving portion having an opening formed in the upper surface of the apron to recess the internal space of a predetermined size in the body of the apron;

A rotating body rotatably disposed in the receiving part, having at least two or more contact rollers having a part of an outer surface exposed through the exposure hole so as to contact the front and rear ends of the slab bar;

In order to provide a slab bar guide device for a rough rolling machine equipped with a rotary roller, characterized in that it comprises a; rotating motor for rotating the rotating body in the receiving portion so that the outer surface of the contact roller is exposed through the exposure hole. By.

Hereinafter, the present invention will be described in more detail.

Figure 3 is an external view showing a slab bar guide device of the roughing mill is equipped with a rotary roller according to the present invention, Figure 4 is a slab bar guide device of the roughing mill is equipped with a rotary roller according to the present invention. 5 is a cross-sectional view illustrating a slab bar guide device of a rough rolling machine equipped with a rotary roller according to the present invention, and FIG. 6 is a slab bar guide device of a rough rolling machine equipped with a rotary roller according to the present invention. State of use is shown.

3 to 6, the apparatus 1 of the present invention, between the front, rear and apron of the slab bar entering in one direction when guided into the slab bar between the upper and lower work rolls 110, 120 As installed on the inlet side of the rolling stand 130 to prevent surface bonding due to friction and contact, such a device 1 is composed of a receiving portion 10, the rotating body 20 and the rotating motor 30. .

That is, the receiving portion 10 is apron 151 disposed between the pair of edge rolls 141 in contact with the left and right ends of the slab bar (S) to enter the rolling stand 130 side in one direction on the table roller 155. It is an internal space that is formed to a certain size in the body.

The accommodating part 10 forms an inner space of a predetermined size to accommodate the rotating body 20 from the lower side to the upper side thereof, and the apron 151 corresponding to the surface of the slab bar S. The upper surface of the body of the opening forming an opening (11) in communication with the inner space of the receiving portion (10).                     

In addition, the rotating body 20 rotatably accommodated in the receiving part 10 has a line and a rear end of the slab bar S that enter in one direction between a pair of aprons 151 disposed at the top and the bottom thereof. At least two contact rollers 24 having a part of an outer surface thereof are exposed through the exposure hole 11 of the accommodating part 10 so as to contact them before contacting the surface of the loan 151.

The rotating body 20 has both ends of the roll shaft 24a between the front and rear circular rotating plates 21 and 22 assembled to both ends of the rotating shaft 23 and the front and rear circular rotating plates 21 and 22. It consists of at least two or more contact rollers 24 which are assembled to be idlely rotatable through the bearing member 24b.

Here, the contact roller 24 is preferably provided with an outer diameter of a degree that does not overlap each other.

The sealing member 24c is mounted to the outside of the bearing member 24b provided on each roll shaft 24a of the contact roller 24 so that there is no intrusion of moisture and foreign matter to the roll shaft 24a side.

Here, each of the central holes 21a and 22a of the front and rear circular rotating plates 21 and 22 is assembled through both ends of the rotating shaft 23 and the key member so that the front and rear circular rotating plates 21 ( 22 is rotated in the same direction.

On the other hand, the rotary motor 30 is a plurality of contacts mounted to the rotating body 20 only when the slab bar (S) enters between the upper and lower prolon 141 disposed between the edge roll 141. Generates a driving force for rotationally driving the rotating body 20 in the receiving portion 10 in one direction so that the outer surface of the contact roller 24 of any one of the rollers 24 is exposed to the outside through the exposure hole 11. It is a motor member to make.

The rotary motor 30 is assembled so that the drive shaft 30 can transmit the rotational power via the central hole 21a and the key member of the front circular rotary plate 21, the central hole of the rear circular rotary plate 22 22a is rotatably supported by a support shaft protruding from the inner surface of the receiving portion 10. Accordingly, the rotating body 20 can be rotated by the rotating power of the rotating motor 30.

Here, the rotation motor 30 is an exposure mode for exposing the plurality of contact rollers 24 disposed at the same circumferential interval on the rotating body 20 through the exposure hole 11 of the receiving portion 10, and The contact roller 24 is rotated in half of the installation angle θ between the contact roller 24 and the adjacent contact roller 24 so as to switch the non-exposure mode accommodated in the receiving portion 10.

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

The slab bar (S) is extracted from the heating furnace using the apparatus (1) of the present invention and passed through the apron (151) disposed in the upper and lower portions of the slab bar (S) which proceeds in one direction toward the rolling stand 130. The operation of preventing surface defects of the slab bar S by preventing the front and rear lower surfaces of S) from contacting the upper surface of the lower side apron 151 is first performed by the lower side apron 151. The rotating motor 30 is rotated and stopped so that any one of the plurality of contact rollers 24 provided in the rotating body 20 is exposed through the exposure hole 11 opened on the upper surface of the body.                     

In this state, the front lower surface of the front end of the slab bar (S) that enters in one direction by riding the table roller 155, instead of being in direct contact with the upper surface of the body of the apron 151, In contact with the outer circumferential surface of the contact roller 24 assembled to be idlely rotated between the rear circular rotating plate (21) (22) is to enter the rolling stand 130 without damaging the surface of the slab bar (S).

Then, when the rear end of the slab bar (S) is passed through the feeding roller 156 and the entry into the rolling stand 130 is completed, the contact roller 24 is connected to the rotating body 20 connected to the rotary motor 30 ), And when the divided rotation is performed at a split rotation angle 1/2 of the installation angle θ formed between the rotating roller 24 adjacent thereto, the contact roller 24 is switched from the exposure mode to the non-exposure mode, It is located in the receiving portion 20 so as not to be exposed to the outside through the exposure hole (11).

Subsequently, when the front end of another subsequent slab bar S is detected at the front end of the apron 151, the contact roller 24 is exposed to the exposure hole by the divided rotational driving of the rotary motor 30. 11) the exposure mode is automatically switched to the exposure mode.

Accordingly, the front and rear ends of the apron 151 detect the entrance of the front end of the slab bar (S), detect the passage of the rear end of the slab bar (S), and the rotary motor 30 by the detection signal. ) May be provided with a sensor member for split rotation driving to switch between exposure mode and non-exposure mode.

 According to the present invention as described above, when the slab bar progressing in one direction toward the rolling stand side passes through the apron, by converting the continuous contact between the slab bar and the apron into intermittent rolling contact, the temperature of the heated state at the high temperature in the furnace is high. Since the surface defects of the slab bar, which is a rolled material, can be minimized by preventing friction between the front and rear ends of the slab directly in contact with the apron, an effect of improving the quality of the steel sheet manufactured by rolling in the rolling process is 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)

Rolling stand 130 having upper and lower work rolls 110 and 120, and the upper and lower fron to guide the slab bar S entering in one direction between the roll members 110 and 120. In the roughing mill having a slab bar guider (150) having a 151, and rolling the slab bar (S) by finishing, A receiving part 10 having an exposed hole 11 formed in an upper surface of the lower apron 151 to recess an internal space of a predetermined size in a body of the lower apron 151; At least two contact rollers 24 having a part of an outer surface exposed through the exposure hole 11 to be in contact with the front and rear ends of the slab bar S are rotatably disposed in the accommodating part 10. A rotating body 20; It includes; a rotary motor 30 for driving the rotating body 20 in the receiving portion 10 so that the outer surface of the contact roller 24 is exposed through the exposure hole (11), The rotation motor 30 has an exposure mode for exposing the plurality of contact rollers 24 disposed at the same circumferential interval to the rotating body 20 through the exposure hole 11 of the accommodating part 10, and the contacting method. Characterized in that the roller 24 is divided and rotated by 1/2 of the rotation angle θ between the contact roller 24 and the adjacent contact roller 24 so as to switch the non-exposure mode accommodated in the receiving portion 10. Slab bar guide of rough rolling machine with rotary roller. The method of claim 1, The rotating body 20 has both ends of the roll shaft 24a between the front and rear circular rotating plates 21 and 22 assembled to both ends of the rotating shaft 23 and the front and rear circular rotating plates 21 and 22. Slab bar guide device of the rough rolling machine equipped with a rotary roller, characterized in that composed of at least two contact rollers 24 are assembled rotatably through the bearing member (24b). delete The method of claim 1, The front and rear of the front and rear of the epron 151 detects the entrance of the front end of the slab bar (S), detects the passage of the rear end of the slab bar (S), and the rotary motor 30 by the detection signal Slab bar guide device of a rough rolling machine equipped with a rotary roller, characterized in that it comprises a sensor member for switching to the exposure mode and the non-exposure mode by split rotation driving.

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