KR20140084624A - Strip cutting method using shifting device of fixed type - Google Patents

Abstract

The present invention relates to a fixed type shifting device (100) having multiple conveying rollers (110) conveying a strip (S) to allow the strip (S) to be cut by a cutting unit (C) and a driving unit (120) driving the conveying rollers (110). Each conveying roller (110) has a shaft (SH) rotating by the driving unit (120) and disc rollers (DR) disposed on the outer periphery of the shaft (SH) and having a larger diameter than the shaft (SH), wherein the disc roller (DR) is formed on the center of the shaft (SH) in the initial conveying roller (110) in the advancing direction of the strip (S). At the next conveying roller (110), the disc rollers (DR) are spaced apart from each other, so that the distance between the spaced disc rollers (DR) becomes narrower toward the conveying rollers (110).

Description

TECHNICAL FIELD [0001] The present invention relates to a cutting method using a fixed type shifting device,

The present invention relates to a method of cutting a slab using a shifting device, and particularly to a method of cutting a slab by using a shifting device, And more particularly, to a slab cutting method using a fixed shifting device capable of preventing breakage and improving casting quality.

In general, in the continuous casting process, molten steel refined in an electric furnace and a refining furnace is injected into a casting ladle, molten steel is injected into a tundish, molten steel is injected through an immersion nozzle of a tundish into a mold to produce a rectangular slab, The slab initially solidified in the mold is completely solidified as a large amount of cooling water,

After being manufactured in the casting process, the customer cuts to fit the desired length.

As shown in FIGS. 1 and 2, the cutting device C for cutting the slab S is cut to a predetermined length from the upper surface of the feed roller 11 of the shifting device 10 by using the cutting device C, .

When the continuous cast slab S is placed on the surface of the roller 2 on the lower surface of the cutting device C, the meshing roller When the lower surface 7 of the cast steel 3 rises and contacts the lower surface of the cast steel 3 with a constant force, the roller of the front end portion rotates to measure the length of the cast steel S.

The lifting C1 of the cutting device C is lowered to press the upper surface of the slab S with a constant force to pull out the slab S, Is moved depending on the cast steel S and the corresponding burners C2 and C3 run on the inside to cut the cast steel S.

When the burners C2 and C3 come close to the conveying roller 11 of the shifting device 10 and the sensor 6 provided in the cutting device C is moved to the conveying roller 11, The burners C2 and C3 stop the temporary cutting operation by sensing the bracket 7 provided on the side and shrink and expand the rod of the cylinder 4 to move the shifting device 10 forward and backward The roller 11 is not affected by the flame of the burners C2 and C3.

In the case where the shifting device 10 is pushed forward, the cutting operation is continuously performed without interrupting the cutting operation. However, when the shifting device 10 is pulled backward, the temporary cutting operation is stopped. The suspended cutting operation is resumed and the slab S is cut. On the other hand, when the corresponding burners C2 and C3 are close to each other while leaving a certain portion of the slab cutting operation, the burner C3 on one side returns to the home position, and the burner C2 on the other side is not continuously cut Cut the part.

When the cutting operation completion information is transmitted as described above, the slip S is conveyed to the post-process by the rotation of the feed roller 11 of the shifting device 10, and the burners C2 and C3 return to the home position , And lifting (C1) of the cutting device (C) is raised so that the cutting device (1) also returns to the original home position.

The shifting device 10 is provided with a plurality of conveying rollers 11 at predetermined intervals on the upper side of the integrated base and connecting the cylinder 4 (see FIG. 2) Shrinkage, and swelling to move back and forth at regular intervals.

The above operation is performed automatically only during the cutting operation of the slab S, and the operator may manually move and operate by intervening.

The cut surface of the slab S of the cutting device C is positioned on the horizontal line as shown in FIG. 3 because the shifting device 10 does not act as an obstacle even when the slab S is cut during the slab cutting operation do.

However, if the shifting device 10 moves incorrectly during the cutting operation of the slab S for any reason, the slab surface may not be constant or the slab may not be cut as shown in FIG.

In order to solve such a problem, a manual operation is performed. In this case, there is a risk of an image and a safety accident due to the manual cutting operation. The cutting operation is performed by decelerating the casting speed, There arises a problem that the casting operation must be stopped.

On the other hand, the cutting device C and the shifting device 10 as described above are well-known structures as described in the following prior art documents, and detailed descriptions and explanations thereof will be omitted.

Korean Patent Publication No. 2001-0047293 Korea Patent Publication No. 2009-0072128

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a cutting apparatus in which when a burner of a cutting apparatus runs in a width direction of a cutting tool while a shifting device is fixed, The operation of the burner is stopped and the cast strip and the cutting device are moved on the following conveying rollers. Thereafter, the cast strip is cut by moving the burner in the width direction of the cast steel by an interval in which the disc rollers are not formed, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a slab cutting method using a fixed shifting device capable of solving the problems occurring in a slab cutting machine.

In order to accomplish the above object, the present invention is characterized in that a plurality of feed rollers 110 for feeding the slab S are cut so that the slab S is cut in the cutting device c, and a driving part for driving the feed rollers 110 The conveying roller 110 includes a shaft SH which is rotated by the driving unit 120 and a shaft 130 which is provided on the outer circumference of the shaft SH, Wherein the disc roller DR is formed at a central portion of the shaft SH in the conveying roller 110 at an initial stage of the movement of the cast piece S, The disc rollers DR are spaced apart from each other in the conveying roller 110 and then the distance between the disc rollers DR is narrowed toward the conveying roller 110 side.

A sensing sensor 130 installed on one side of the cutting device C and recognizing the conveying roller 110 while moving together with the conveying roller 110 and a bracket 140 disposed on the same line as the conveying roller 110, The detection sensor 130 senses the bracket 140 and determines that the burner of the cutting device C is in contact with the conveying roller 110. [

The bracket 140 includes a high bracket 140H disposed on one side of the conveying roller 110 and a low bracket 140L disposed on one side of the high bracket 140 and a height lower than the high bracket 140H. The sensing sensor unit 130 may include a first sensor 131 for sensing the high bracket 140H and a second sensor 132 for sensing the low bracket 140L.

The first disk roller DR that the burner of the cutting device C travels in the width direction of the slab S and is in contact with the cutting device C cuts the first bracket 140H by sensing the high bracket 140H , And then the disk roller DR can sense the low bracket 140L by the second sensor 132 and recognize it.

In addition, the distance between the spaced disc rollers DR may be narrowed while the length of the disc rollers DR may be increased.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention as described above, the cutting operation can be performed in a state where the shifting device is fixed, thereby preventing the problems caused by malfunction of the conventional mobile shifting device.

1 and 2 are a perspective view and a conceptual view illustrating a conventional cutting apparatus and a shifting apparatus,
Fig. 3 is a conceptual diagram showing cutting of a slab by a conventional cutting device
Fig. 4 is a conceptual diagram showing that an error occurs in a conventional shifting device to perform abnormal cutting,
Figures 5 and 6 are conceptual diagrams illustrating the method of the present invention,
7 and 8 are conceptual diagrams showing that the disc roller interval of the present invention is narrowed while the width of the disc roller is increased,
9 is a partially exploded perspective view showing the conveying roller and the driving unit of the present invention,
10 is a conceptual diagram showing a cutting apparatus including the sensing unit of the present invention.

Certain advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings and the preferred embodiments. It should be noted that, in the present specification, reference numerals are added to the constituent elements of the drawings, and the same constituent elements have the same number as far as possible even if they are shown in different drawings. Also, the terms "first "," second ", "one side "," other ", and the like are used to distinguish one element from another, no. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

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

The present invention is characterized in that a plurality of feed rollers 110 for feeding a slab S are disposed in the traveling direction of the slab S by disposing a disk roller DR at the outer periphery of the shaft SH as described above, As a method of cutting the slab S, the slab S is cut in a state where the shifting device is fixed.

5, the burners C2 and C3 of the cutting device C travel in the width direction of the slab S and are cut off while the burners C2 and C3 The operation of the burners C2 and C3 is stopped (S110, hereinafter referred to as the first step).

That is, the slab S and the cutting device C moving in conjunction with the slab S move in the rightward direction (forward direction) of the drawing as shown in FIG. 5, And moves in contact with the disc roller DR. At this time, as described above, the burners C2 and C3 move along the advancing direction of the cast steel while being approaching each other in the direction of the width center, so that the burners C2 and C3 come into contact with the disc roller DR during the progress.

In this case, there is a possibility that the disc roller DR is damaged by the burners C2 and C3 as described above. In order to prevent this, the shifting device itself has been moved. In this case, There has been a problem as described above. In order to solve this problem, the present invention prevents damage to the disc roller DR by a method as described below while keeping the shifting device in a fixed state without moving.

That is, as described above, the burners C2 and C3 of the cutting device C are driven in the width direction of the cast steel S and the burners C2 and C3 are placed on the adjacent disk rollers DR 6, after the first step S110 of stopping the operation of the burners C2 and C3, the slab S and the cutting device C are moved to the next conveying rollers 110 and 112, A second step S120 of cutting the slab S while moving the burners C2 and C3 in the width direction of the slab S is performed.

In other words, since the shifting device 100 is fixed, the conveying roller 110 and the disc roller DR are also fixed. In this state, the cutting device C is cut while moving, and when it comes into contact with the disc roller DR, the operation of the burner is stopped and the burner is operated again after passing through the contacted disc roller DR.

At this time, the approach of the cutting device C and the disc roller DR is such that the sensing sensor part 130 disposed on one side of the cutting device C is mounted on the same line as the conveying roller 110 140 to detect that the conveying roller 110 is close to the conveying direction. 5 and 6, since the detection sensor unit 130 moves together with the cutting device, when the detection sensor unit 130 senses the bracket 140, the burners C2 and C3 and the disk It is recognized that the roller DR is approaching, and the operation of the burners C2 and C3 is stopped as described above, then moved to the next conveying roller side so as to be operated again.

At this time, the length of the bracket 140 may be equal to or larger than the radius L1 of the disk roller DR as shown in FIG.

5 and 6, the bracket 140 includes a high bracket 140H disposed on one side of the conveying roller 110 and a high bracket 140H disposed on one side of the high bracket 140H, And a lower bracket 140L lower than the first bracket 140H and the sensing sensor 130 includes a first sensor 131 for sensing the high bracket 140H and a second sensor 132 for sensing the low bracket 140L. (See Fig. 10). At this time, the first disk roller DR, in which the burner of the cutting device C travels in the width direction of the slab S and is contacted while cutting, senses the high bracket 140H by the first sensor 131, And then the disk roller DR can detect the second bracket 140L by sensing the second bracket 140L.

7, the disc roller 111a of the first conveying roller 111 senses and recognizes the high bracket 140H by the first sensing sensor 131 as shown in FIG. 6, The disk rollers of the conveying rollers 112, 113 and 114 allow the second sensing sensor 132 to sense the row brackets 140L to enable more precise sensing.

9, the disc roller DR of the conveying roller 110, to which the slip S contacts first, among the conveying rollers 110 is formed at the center of the shaft SH, The disc rollers DR are formed to be spaced apart from each other and then the distance between the disc rollers DR spaced apart from each other in the direction of the conveying rollers 110 may be narrowed.

That is, as shown in the drawing, the conveying roller 110 is formed integrally with the central portion of the shaft SH by the disc roller 111a formed at the outer periphery of the shaft SH in the case of the conveying rollers 110, do. In the case of the next conveying roller 112, the disc rollers 112a and 112b are spaced apart from each other. Thereafter, the disc rollers 113a and 113b of the conveying roller 113 are spaced apart from each other, The lengths D1, D2 and D3 become narrower toward the conveying roller 114 side and the lengths M1, M2 and M3 of the disc roller itself increase.

In other words, the distances D1, D2 and D3 between the disc rollers DR become narrower in the advancing direction and the lengths M1, M2 and M3 of the disc rollers DR become longer. According to the present invention, the contact area of the disc roller DR on the bottom surface of the slab S is increased, and the slab S can be transported more stably.

The conveying roller 110 may be driven by a driving unit 120 as shown in FIG. The drive unit 120 includes a motor 121 for rotating the shaft SH, a support 122 for mounting the motor 121, and bearings 123 and 124 for supporting the shaft SH can do.

Hereinafter, the cutting process will be described in detail with reference to FIGS. 7 and 8.

The cutting device C is interlocked with the slab S and the burners C2 and C3 travel to the inside of the slab S in the width direction to cut the slab S. [

At this time, when the detection sensor unit 130 provided in the cutting device C senses the bracket 140, the cutting operation of the burners C2 and C3 is suspended and the standby state is maintained. When the detection sensor unit 130 detects that the cutting device C is separated from the bracket 140, the burners C2 and C3 are re-cut to remove the cut pieces S Cut the remaining part.

In other words, when the detection sensor unit 130 detects the bracket 140 during the cutting operation, the burners C2 and C3 are on the conveying roller 111, and the operation of the burners C2 and C3 is stopped When the burners C2 and C3 are moved away from the conveying roller 111 by the movement of the slab S and the cutting device C, they are separated from the bracket 140 by a predetermined distance It is possible to restart the burners C2 and C3 to prevent the conveying roller from being damaged by the burners C2 and C3.

The sensing unit 130 may include a first sensor 131 and a second sensor 132 as described above and the bracket 140 may include a high bracket 140H having a high height and a high- And may include a low row bracket 140L.

At this time, the first sensor 131 senses the high bracket 140H and the second sensor 132 senses the low bracket 140L. For this, the first sensor 131 senses the second sensor 132, (See Fig. 10).

That is, when the first sensor 131 senses the high bracket 140H, the burners C2 and C3 suspend the cutting operation and maintain the standby state, and when the first sensor 131 detects the high bracket 140H The burners C2 and C3 perform a re-cutting operation to cut the remaining portion of the slab S that has not been cut.

When the second sensor 132 senses the low bracket 140L, the second sensor 132 is close to the second conveying roller 112. Therefore, after the operation of the burner is stopped, the third sensor 132 moves to the third conveying roller 113, And then performing the cutting operation again.

At this time, the burners C2 and C3 are gathered at the center of the width S of the slab S while cutting operation, so that the interval between the disk rollers may be narrowed as described above.

That is, since the interval between the burners C2 and C3 in the third conveying roller 113 is narrower than the interval between the burners C2 and C3 in the second conveying roller 112, The gap may be as narrow as that, and the width of the disc roller may be increased for this reason.

On the other hand, when the burners C2 and C3 reach the fourth conveying roller 114 as shown in the figure, the burners C2 and C3 become close to each other so that the right burner C3 in the drawing returns to the initial position And the left burner C2 on the drawing is continuously cut to the inside in the width direction (i.e., the right side in the drawing) to finally cut the slab S. [

When the cutting operation is completed as described above, the burner C2 is returned to the initial position. The lifting which has been pressing the upper surface of the slip S is raised to a certain height, and the cutting device 10 travels at the home position, .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

Further, 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.

100: shifting device 110: conveying roller
SH: Shaft DR: Disc roller
120: Driving unit 130:
140: Bracket

Claims (5)

A plurality of feed rollers 110 for feeding the slab S so that the slab S is cut in the cutting device c and a shifting device 120 for driving the feed rollers 110 100)
The conveying roller 110 includes a shaft SH rotated by the driving unit 120 and a disc roller DR having a larger diameter than the shaft SH, However,
The disc roller DR is formed at the center of the shaft SH in the conveying roller 110 at the initial stage of the movement of the cast steel S,
The gap between the disc rollers DR is spaced apart from the conveying roller 110 and then gradually decreases toward the conveying roller 110. [ Device. The method according to claim 1,
A sensing sensor 130 installed on one side of the cutting device C and recognizing the conveying roller 110 while moving together with the conveying roller 110 and a bracket 140 disposed on the same line as the conveying roller 110, ,
Wherein the sensing sensor unit senses the bracket and determines that the burner of the cutting device is in contact with the conveying roller. 3. The method of claim 2,
The bracket 140 includes a high bracket 140H disposed on one side of the conveying roller 110 and a low bracket 140L disposed on one side of the high bracket 140 and a height lower than the high bracket 140H And the sensing sensor unit 130 includes a first sensor 131 for sensing the high bracket 140H and a second sensor 132 for sensing the low bracket 140L. . The method of claim 3,
The first disk roller DR, which is driven by the burner of the cutting device C in the width direction of the cast steel S and is contacted while being cut, detects the high bracket 140H by the first sensor 131,
And then the disk roller DR senses and recognizes the second bracket 140L by the second sensor 132. [ The method according to claim 1,
Wherein a distance between the spaced disc rollers DR is reduced while a length of the disc rollers DR is increased.

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