KR101398131B1 - Steel plate cutting auxiliary unit and steel plate cutting apparatus having the same - Google Patents

Abstract

The present invention relates to a slab cutting apparatus, A plurality of brackets provided on the frame portion and respectively corresponding to a plurality of disk rolls provided on the shifting table; And a sensor unit installed on a cutting section for cutting the punches and sensing a position of the disc roll by sensing the presence of the bracket. The present invention also provides a cutting machine, A shifting table positioned at a lower portion of the slab cutting portion and shifted back and forth so as to cut the slab cutting portion; And a slab cutting auxiliary unit comprising the slab cutting auxiliary unit. The slab cutting auxiliary unit and the slab cutting apparatus including the slab cutting unit can detect the disk roll irrespective of the position of the disk roll supporting the slab so as to prevent deformation and cutting of the disk roll due to the flame of the burner.

Description

TECHNICAL FIELD [0001] The present invention relates to a cutting apparatus for cutting a slab, and a slab cutting apparatus including the slab cutting auxiliary unit.

The present invention relates to a slab cutting apparatus, and more particularly, to a slab cutting auxiliary unit for cutting a slab drawn in a continuous casting process and a slab cutting apparatus including the slab cutting auxiliary unit.

Generally, in a continuous casting process, molten steel produced in an electric furnace or a refining furnace is injected into a ladle, then placed in a ladle trough, and a long nozzle is connected to the ladle to inject molten steel into the tundish. When inclusions contained in the molten steel injected into the tundish are separated from each other, molten steel is supplied to the mold through the immersion nozzle and cooled, and the solidified material is subjected to a drawing process. At this time, the dummy bar head is inserted into the lower part of the casting mold to seal the casting, and then the casting is pulled out. At the beginning of the casting process, the dummy bar is pulled out, When the slab of a predetermined length is pulled out, the dummy bar is hooked on the winch hook and separated from the slab, and the slab is continuously pulled out and cut to a predetermined length by the slab cutting device on the upper surface of the disk roll of the shifting table, Lt; / RTI >

The conventional slab cutting operation will be described with reference to FIGS. 1 to 3. FIG. The main cutting section 1 for cutting the cast strip 3 includes a sensor 10 and burners 6 and 6a. The cut length (or cut position) of the cast piece 3 extending in the longitudinal direction can be set by an operator, and the sensor 10 of the cut piece cutter 1 can recognize and measure the set length have.

When the slab 3 is pulled out to the shifting table 2 under the slab cutting section 1 and comes to the set position in the continuous casting process, the lifting 7 of the slab cutting section 1 presses the upper surface of the slab 3 at a constant pressure The slab cutting section 1 is moved by the slab 3 in the longitudinal direction of the slab 3 and the burners 6 and 6 provided on both sides of the slab cutting section 1 travel inward to perform the cutting operation do.

When the burners 6 and 6a on both sides are cutting inward in the width direction of the cast strip 3 and the corresponding burners 6 and 6a come close to each other leaving a certain distance, And the burner 6 on the other side continues the cutting operation continuously.

When the position of the burner 6,6a of the main cutting section 1 is close to the disk roll 2b provided in the shifting table 2 during the main cutting operation, the sensor 10 provided on one side of the main cutting section 1 is fixed The burner 6, 6a stops the temporary cutting operation and performs a continuous cutting operation.

When the shifting table 2 is positioned at the home position, as shown in Fig. 5, the burners 6 and 6a of the corresponding slab cutting section 1 continue the cutting operation continuously without stopping the temporary cutting operation And the shifting table 2 is moved toward the grid 5 side by expanding the rod of the cylinder 2a.

When the shifting table 2 is positioned on the fixed grid 5, the cutting operation of the burners 6 and 6a is temporarily stopped and the rod of the cylinder 2a is contracted as shown in Fig. 4, (2) is moved to the home position so as not to interfere with the disc roll (2b), and then the cutting operation is performed again to cut off the remaining uncut portion.

The sensor 10 provided at one side of the main cutting section 1 senses the disc roll 2b and controls the cutting operation of the burner 6 and the operating state of the shifting table 2, And the slab 3 is cut.

For example, when the sensor 10 senses the bracket 11 and shrinks and expands the cylinder 2a rod to move the shifting table 2 in the forward and backward directions and cuts the slab 3, 2a can not move the shifting table 2 by a set distance and the contact of the sensor 23 or 23a is not touched, the burner 6, . At this time, the position of the disc roll 2b is positioned or near the bottom of the burner so that the disc roll 2b is directly affected by the flame of the burner 6, 6a.

However, as shown in FIG. 6, during the cutting process of the slab, there is a problem that the disk roll portion is broken and cut and deformed by the flame of the burner 6, 6a. In addition, there is a problem that the melt generated at the time of cutting the slab is fused and grown on the wave-cut portion of the disk roll, thereby contaminating the disk roll 2b. As a result, the cast strip 3 that is pulled out is passed through the contaminated disc roll 2b, causing scratched scratches, scratches, scratches, and other quality defects on the bottom surface of the cast strip.

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cutting machine capable of detecting a disc roll regardless of the position of a disc roll supporting the cast strip, An auxiliary unit and a slab cutting apparatus including the auxiliary unit.

The present invention relates to a slab cutting apparatus, A plurality of brackets provided on the frame portion and respectively corresponding to a plurality of disk rolls provided on the shifting table; And a sensor unit installed in the cutting unit for cutting the drawn steel strip and sensing the position of the disc roll by sensing the presence of the bracket unit.

Further, the frame part is fixed to a side part of the shifting table, and is installed to be parallel to the back and forth moving direction of the main cutting part.

Further, the bracket portions are spaced apart from each other at intervals corresponding to the spacing of the disk rolls.

The slab cutting auxiliary unit is characterized in that the bracket portion is in the form of a plate having a plate width equal to or larger than the diameter of the disk roll.

Further, the present invention provides a slab cutting auxiliary unit characterized in that the bracket portion is formed on one side of the frame portion.

In addition, the sensor unit is provided on one side of the burner of the main cutting unit.

The present invention also provides a cutting machine, A shifting table positioned at a lower portion of the slab cutting portion and shifted back and forth so as to cut the slab cutting portion; And a slab cutting auxiliary unit.

The slab cutting auxiliary unit and the slab cutting apparatus including the slab cutting auxiliary unit according to the present invention have the following effects.

(1) According to the present invention, the disc roll can be sensed irrespective of the position of the disc roll supporting the cast steel, thereby preventing the disc roll from being deformed and damaged by the flame of the burner.

(2) According to the present invention, it is possible to prevent the occurrence of quality defects such as scratches on the casting slab being pulled out, thereby producing a cast product of high quality.

(3) The present invention can prevent contamination and deformation of the disk roll, thereby prolonging the service life and reducing cost such as material cost and repair cost reduction.

1 is a view schematically showing a general slab cutting operation process.
Fig. 2 is a view showing an operation state of a slab cutting operation process and a shifting table at the time of cutting.
Fig. 3 is a front view showing a cast steel strip pulled out to a shifting table and a slab cutting apparatus waiting to cut the slab.
Fig. 4 is a view showing a state in which the shifting operation is paused and the shifting table is moved to the home position by recognizing that the shifting table is located on the grid side during the cutting operation.
Fig. 5 is a view showing a state in which the shifting table is moved to the grid side by performing a cutting operation continuously, recognizing that the shifting table is positioned at the home position during the cutting operation.
6 is a view showing a state in which a disk roll surface of a shifting table is cut by a roller misdetection and erroneous operation of the sensor during a cutting operation.
FIG. 7 is an exploded perspective view of a slab cutting auxiliary unit according to a preferred embodiment of the present invention. FIG.
Fig. 8 is a perspective view showing a state in which the slab cutting auxiliary unit of the present invention is mounted on a shifting table of a slab cutting apparatus. Fig.
9 is a view showing an operation state of a cast strip cutting apparatus including a cast strip cutting auxiliary unit according to the present invention.
10 is a view showing a state in which a sensor of the machine for cutting a slab cutting apparatus detects a bracket portion of a slab cutting auxiliary unit and pauses a slab cutting operation in an area of a disk roll.
FIG. 11 is a view showing a state in which the billet cutting auxiliary unit according to the present invention is placed in the home position. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 7 is an exploded perspective view of the slab cutting auxiliary unit according to a preferred embodiment of the present invention, and FIG. 8 is a perspective view showing a state in which the slab cutting auxiliary unit of the present invention is mounted on the shifting table of the slab cutting apparatus.

As shown in Figs. 7 and 8, the slab cutting auxiliary unit 30 according to the preferred embodiment of the present invention includes a frame portion 31, a bracket portion 35, and a sensor portion 37. Fig.

The frame portion 31 is provided on one side portion of the shifting table 2 which moves in the forward and backward directions. The frame section 31 is provided with a guide bar 32 provided parallel to the back and forth direction of the cutting section 1 (see Fig. 9) and provided with a bracket section 35 to be described later, And a horizontal connecting member 34 connecting the vertical connecting member 33 to one side of the shifting table 2 in a horizontal state. Here, the horizontal connecting member 34 can be fastened to the vertical connecting member 33 using bolts and nuts.

A plurality of bracket portions 35 are provided on the guide bars 32 of the frame portion 31 so as to correspond to the plurality of disk rolls 2b provided in the shifting table 2 to be moved. This allows the sensor unit 37, which will be described later, to detect the presence or absence of the disc roll 2b through the bracket 35. [ Further, the bracket portion 35 is formed on one side of the guide bar 32 to protrude. Further, the bracket portions 35 are spaced apart from each other at intervals corresponding to the spacing of the disk rolls 2b. It is preferable that the bracket portion 35 is formed in a plate shape having a plate width equal to or larger than the diameter of the disk roll 2b. In the present embodiment, the bracket portion 35 is formed in a plate shape. However, the present invention is not limited to this, and various shapes can be used. Further, it is preferable that the bracket portion 35 is provided in a structure in which the position adjustment in the longitudinal direction of the guide bar 32 is easy.

The sensor unit 37 is fixed to the main cutting unit 1 through which the cutting operation of the pulling cast strip 3 is performed using the sensor bracket 38 and the fixing piece 39 and detects the presence or absence of the bracket 35 And senses the position of the disk roll 2b. The sensor unit 37 is installed at one side of the burner 6, 6b of the cutting section 1. Further, it is preferable that the sensor unit 37 is installed close to the conventional sensor 10 installed in the cut-to-length cutting unit 1. [

The conventional sensing sensor 10 senses a bracket 11 provided on a fixed base (not shown) and performs a function of moving the shifting table 2 in forward and backward directions. The part 37 senses the presence or absence of the bracket 35 of the slab cutting auxiliary unit 30 mounted on the shifting table 2 and senses the position of the disk roll 2b.

The slab cutting apparatus 100 according to the preferred embodiment of the present invention includes a slab cutting unit 1, a shifting table 2 and the slab cutting auxiliary unit 30 installed in the shifting table 2 do.

The slab cutting section 1 is movable at a moving speed of the slab 3 to be pulled out and at least a part of the slab is positioned above the slitting section of the slab 3 to cut the slab 3. [ The main cutting section 1 includes a sensor section 37 for sensing the disk roll 2b according to the operating state of the shifting table 2 and a sensor section 37 for receiving signals detected from the sensor section 37, And a control unit (not shown) for controlling the operation of the control unit 6a.

The shifting table 2 is a table that moves in the forward and backward direction during the cutting operation of the cut-to-length cutting section 1. [ The shifting table 2 is provided between an approach roll table (not shown) at the front end and a run out roll table (not shown) at the rear end. The shifting table 2 is provided with a plurality of disk rolls 2b at regular intervals, and the disk intervals of the disk rolls 2b may be staggered for different rolls.

The sensor unit 37 senses the position of the disc roll 2b to suspend the cutting operation of the burners 6 and 6b to prevent the disc roll 2b from being cut and deformed. (Not shown) to maintain an organic relationship with the existing program, and a function is added to the cab operation panel (not shown) so that the operator can select whether or not to use the program.

9 is a view showing an operation state of a cast strip cutting apparatus including a cast strip cutting auxiliary unit according to the present invention.

9, the slab cutting auxiliary unit 30 according to the present invention is a slab cutting apparatus in which a continuous cast slab 3 is pulled out to cut a slab at a predetermined position of a disk roll 2b of a shifting table 2, Is positioned below the cut portion (1), and a slab cutting operation is performed.

When the lifting 7 of the slab cutting section 1 descends and moves depending on the slab 3 to be pulled out while pressing the upper surface of the slab 3 at a constant pressure, the slab cutting operation is performed so that the burners 6, 6a Is moved inward in the width direction of the cast strip 3 to perform the cutting operation.

9 shows a case in which the shifting table 2 is located at the home position and the conventional sensor 10 touches the contact point of the bracket 11 when the burner 6,6a approaches the disk roll 2b, The rod is contracted due to the pressurization of the movable plate 2a, and the shifting grid 2 is pushed toward the stationary grid 5 so that the floating grid 5a is embedded.

The burner 6, 6a of the main cutting section 1 continuously carries out the cutting operation without pausing in performing the cutting operation, and the shifting table 2 moves the set moving section to the sensor 23 So that the disc roll 2b does not act as an obstacle to the flame of the burner 6 or 6a and does not deform such as being cut or deformed.

If the sensor 23 can not be touched due to an erroneous operation of the cylinder 2a due to the failure of the movement of the cylinder 2a, the re-cutting operation is performed after a predetermined time, so that the burner 6, The disc roll 2b acting as the disc is not recognized and cut.

In this case, the sensor unit 37 provided in the main cutting unit 1 is connected to the bracket unit 35 of the main cutting disc auxiliary unit 30 mounted on the side of the shifting table 2 provided with the disc roll 2b The burner 6, 6a stops the temporary cutting operation without cutting the disk roll 2b acting as an obstacle.

The burner 6,6a restarts the cutting operation and cuts the slab 3 so that the corresponding burner 6,6a The burner 6a on one side returns to the home position and the burner 6 on the other side successively cuts the remaining portion.

If a certain period remains before the cutting is completed, the disk roll 2b provided on the shifting table 2 rotates and the slab 3 being cut is driven by the run-out table 21 in the subsequent process and transported. The above-mentioned predetermined period is a time for cutting the slab 3 to be cut 20 to 30 mm after cutting the slab 3, in order to prevent the slicing.

In this case, the shifting operation of the pulling casting 3 is started when the shifting table 2 is positioned at the home position. Hereinafter, the shifting table 2 will be described with reference to FIG. The operation states of the sensors 10 and 37 and the burners 6 and 6a of the cutting section 1 and the operation state of the shifting table 2 during the cutting operation of the casting 3 will be described.

10 is a view showing a state in which a sensor of the machine for cutting a slab cutting apparatus detects a bracket portion of a slab cutting auxiliary unit and pauses a slab cutting operation in an area of a disk roll.

10, the burners 6 and 6a on both sides of the main cutting section 1 are continuously cut inside the main body 3 while proceeding inward, and the conventional sensor 10 is mounted on the bracket 6a of the fixed base, The cutting operation of the burner 6, 6a being cut off is suspended, and the rod of the cylinder 2a is inflated to push the shifting table 2 to the home position. At this time, the disk roll 2b provided on the shifting table 2 located below the cast strip 3 smoothly rotates without resistance and touches the contact of the sensor 23a to stop.

For example, when the contact of the sensor 23a can not be touched by the erroneous operation of the cylinder 2a, and after the elapse of a predetermined time (normally 5 seconds, the time setting can be changed) ) Performs the re-cutting operation. At this time, the disk roll 2b acts as an obstacle, but the sensor unit 37 provided in the cutting unit 1 senses the bracket unit 35 mounted on the frame unit 31, and the burner 6, The work is paused and is led by the casting 3 to pass through the region of the disk roll 2b.

FIG. 11 is a view showing a state in which the billet cutting auxiliary unit according to the present invention is placed in the home position. FIG.

11, when the pull cast piece 3 passes the bracket portion 35 of the disk roll 2b region, the burner 6, 6a restarts the cutting operation to cut the cast piece 3, The burner 6a on one side returns to the home position and the burner 6 on the other side successively cuts the remaining part.

As described above, the cutting operation of the machine is performed by detecting the brackets 11 and 35 of the sensors 10 and 37 so that the disk roll 2b and the shifting table 2 of the slab cutting auxiliary unit move forward and backward in the cylinder 2a, So that the cutting operation is performed. At this time, the operator senses the disk roll 2b to pause the flame of the burner 6, 6a and cuts the burner 6, 6a so that the operator can select a function from the operation panel (not shown) And it is also possible to perform the cutting operation of the slab 3 using the disk roll 2b detection system by the conventional sensor 10. [

That is, conventionally, regardless of the presence or absence of the disk roll 2b, when the contact of the sensor 23 or 23a is touched after the operation of the cylinder 2a, or when the contact of the sensor can not be touched, However, according to the present invention, when the position of the disc roll 2b is sensed when an erroneous operation of the cylinder 2a occurs in parallel with the conventional cutting method, the burner 6 (6a) , 6a are temporarily stopped so that the disk roll 2b is not cut or deformed in the flame. The conventional bracket 11 and the bracket portion 35 of the present invention perform their own functions without being interfered with each other due to their different positions and heights. The sensor portion 37 of the invention also performs its own functions at different heights and positions.

The slab cutting apparatus 100 including the slab cutting auxiliary unit 30 according to the present invention detects the disk roll 2b regardless of the position of the disk roll 2b supporting the slab 3, 6b can be prevented from being deformed and cut off by the flame, thereby preventing the occurrence of quality defects such as scratches on the bottom surface of the cast piece 3 to be pulled out, thereby producing a cast product of high quality.

While the present invention has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes may be made without departing from the scope of the present invention. In addition, the description in parentheses in the description of the claims is intended to prevent obscuration of the description, and the scope of the claims of the claims should be construed to include all the items in parentheses.

1:
2: Shifting table
30: Cutting Auxiliary Unit
31:
32: Guide bar
33: vertical connecting member
34: Horizontal connecting member
35: Bracket part
37:
38: Sensor bracket
39: Sensor fixing piece
100: cutting machine

Claims (7)

delete delete delete delete A frame portion provided on a shifting table of the slab cutting device;
A plurality of brackets provided on the frame portion and respectively corresponding to a plurality of disk rolls provided on the shifting table; And
And a sensor unit installed on the cutting section for cutting the punching piece and sensing the position of the disc roll by sensing the presence of the bracket part,
Wherein the bracket portion is in the form of a plate having a plate width equal to or larger than the diameter of the disk roll. A frame portion provided on a shifting table of the slab cutting device;
A plurality of brackets provided on the frame portion and respectively corresponding to a plurality of disk rolls provided on the shifting table; And
And a sensor unit installed on the cutting section for cutting the punching piece and sensing the position of the disc roll by sensing the presence of the bracket part,
Wherein the sensor unit is installed on one side of the burner of the main cutting unit. A cutting section for cutting the drawn steel sheet;
A shifting table which is located below the slab cutting section and which moves in the forward and backward directions during the cutting operation of the slab cutting section; And
A slab cutting apparatus comprising the slab cutting auxiliary unit of claim 5 or 6.

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