KR200322407Y1 - Automatic reguration apparatus of continue casting mold - Google Patents

Abstract

The present invention relates to the automation technology of the work by the mold in the continuous casting process, the long side plate and the short side plate is in close contact with each other in order to solve the work defects caused by the change of the iron static pressure and the clamping force of the molten steel produced during the conventional casting The gap adjustment for compensating the gap generated between the long swing plate and the short swing plate in the continuous casting process in a continuous casting mold forming a rectangular mold, including a clamp cylinder for elastically close contact with both sides of the long swing plate. Means; A clamping force adjusting means installed at one side of the clamping cylinder to maintain a constant clamping force of the long swing plate; A long side plate deformation amount detecting means installed on the long side plate to detect the amount of deformation of the long side plate; A variable width device for controlling the width of the mold by adjusting the position of the short swing plate; Short swing plate position detection means is installed in the width adjusting means for detecting a change in the position of the short swing plate; Automatic adjustment of the continuous casting mold, including; the control means for controlling the gap adjusting means, the clamping force adjusting means or the variable width device by the electric signal transmitted from the long-shift plate deformation amount detecting means or the short-shift plate position detecting means It is to provide a device.

Description

Automatic reguration apparatus of continue casting mold

The present invention relates to an automatic adjustment device for continuous casting molds, and more particularly, to continuously detect and adjust the gap according to the clamping force of the long side plate and the iron static pressure of molten steel according to the deformation amount of the long side plate. It relates to an automatic adjustment device.

In general, continuous casting equipment is a device that continuously produces slabs, which are intermediate materials before melting molten steel into final products after manufacturing molten steel by removing oxygen from the converter by removing oxygen from the converter.

In the mold of the continuous casting process, in order to prevent the opening of the copper plate due to the positive static pressure generated during casting, a pair of long side plates facing each other at a predetermined reference pressure are pulled together, and this force is defined as a clamping force.

As shown in FIG. 1, in the clamping force adjusting device of a mold according to the prior art, the mold is formed in a rectangular housing in which the long swing plate 1, 1 ′ and the short swing plate 2, 2 ′ are in close contact with each other. In order to adjust the clamping force of the long swing plate (1) (1 '), the clamping cylinder (3) is installed on both sides of the long swing plate (1) ('), and the width of the short swing plate (2) (2 ') is changed. For this purpose, the width variable device 4 is provided before and after the short swing plate 2, 2 '.

As shown in FIG. 2, the clamping force of the conventional mold is fixed by using a dial gauge 6, a spanner 7, or the like with an arbitrary force.

In addition, the configuration of the fastening cylinder (3) is, as shown in Figure 3, the fastening cylinder rod (8) to which both ends of the turn buckle (5) is coupled, the fastening cylinder rod (8) is mounted on the outer peripheral surface of the fastening cylinder rod It consists of a spring 9 which is compressed and expanded by means of.

In the mold of the continuous casting process according to the prior art configured as described above, the iron static pressure of molten steel generated during casting is often changed by various factors, and the clamping force of the turn buckle is changed by various factors even during maintenance work.

Explain the changes in the clamping force and the iron static pressure of molten steel as follows.

First, the change factors due to the clamping force are caused by the decrease and damage of the elastic force of the spring in the clamping cylinder, the loosening of the clamping bolt, the wear of the copper plate, the mixing of foreign matter in the gap between the copper plate, and the deformation of the copper plate due to heat. The factor is that the static steel temperature rises due to a decrease in cooling strength due to leakage, and thus the iron static pressure is increased, or the iron static pressure is changed by a change in the width of the cast steel during casting.

As such, the iron static pressure of the molten steel and the clamping force of the copper plate lose the balance between the two forces set during the maintenance work, and during the casting, the gap between the copper plate is manufactured out of the standard value. When the gap between the copper plate exceeds the standard value, the molten steel flows out through an excessive gap. And the corners of the slats around the gaps are not subjected to the primary cooling, so cracks are generated by the quenching during the second cooling.If the gap between the copper plates does not meet the standard value, the copper plate does not open during the width adjustment, so the width adjusting device There is a problem of breakage.

On the other hand, in general, the long swing plate (1) (1 ') of the mold is manufactured in a convex state as shown in Figure 4, in consideration of the deformation and iron static pressure due to heat during operation, but conventionally the criterion Fixed width and the width adjustment work is performed with the long side plate (1) (1 ') widened at a constant pressure, so the gap (t) of the copper plate at the maximum width and the minimum width is generated during the width adjustment. The short fluctuation plate (2) (2 ') is sandwiched between the long fluctuation plate (1) (1') and the width change is not smooth, and the gap (t) of the copper plate becomes large during the maximum width operation, so that the molten steel flows out. -out) occurs.

The object of the present invention devised in view of the above problems is to provide an automatic adjustment device for a continuous casting mold to maintain a constant gap between the long side plate and the short side plate changing during the variable operation of the mold.

Another object of the present invention is to provide an automatic adjustment device for a continuous casting mold to automatically adjust the change in the clamping force generated during the casting operation.

1 is a perspective view of a clamping force adjusting device of a continuous casting mold according to the prior art.

Figure 2 is a state diagram for adjusting the clamping force according to FIG.

3 is a cross-sectional view of a fastening cylinder according to the prior art.

4 is a schematic plan view showing a variable state of a long side copper plate and a short side copper plate according to the prior art;

Figure 5 is a perspective view of the automatic adjustment of the clamping force of the mold for continuous casting according to the present invention.

Figure 6 is a perspective view showing the configuration of the long swing plate gap adjusting means according to the present invention. 7 is an exploded perspective view of FIG. 6;

8 is a cross-sectional view of the coupled state of FIG.

9 is a cross-sectional view of the fastening cylinder according to the present invention.

10a is a hydraulic circuit diagram of a fastening cylinder according to the present invention.

10b is a hydraulic circuit diagram of a clamping adjustment cylinder according to the present invention.

11 is a flow chart of the width adjustment operation according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1,1 '; Long side plate 2,2 '; Short-driving plate

10; Clearance adjustment means 11; motor

12; Drive gear 13; Cylindrical interlocking gear

14,14 '; Upper and lower racks 15,15 '; Fastening cylinder fixing bolt

16,16 '; Bearing 17,17 '; cover

18; Case 20; Tightening force adjusting means

21; Tightening cylinder 22; tube

23; Rod 24; Tightening Cylinder Hydraulic Supply Line

25; Hydraulic pump 26; motor

27; Flow path switching valves 28,29; 1st, 2nd solenoid

30; Clamping cylinder 31; road

32; Spring 34; Clamping cylinder hydraulic supply line

35; Hydraulic pump 36; motor

37; Flow path switching valves 38,39; 1st, 2nd solenoid

40; Width variable 50; Long drift plate deformation means

51; Detection rod 52; sensor

60; Short swing plate position detecting means 61; Detection rod

62; Sensor 70; Control means

In the present invention for achieving the above object, in the continuous casting mold to form a rectangular mold by the long side plate and the short side plate is in close contact with each other, comprising a fastening cylinder for elastically close contact with both sides of the long side plate, Gap adjusting means for compensating for the gap generated between the long side plate and the short side plate in the continuous casting process; A clamping force adjusting means installed at one side of the clamping cylinder to maintain a constant clamping force of the long swing plate; A long side plate deformation amount detecting means installed on the long side plate to detect the amount of deformation of the long side plate; A variable width device for controlling the width of the mold by adjusting the position of the short swing plate; Short swing plate position detection means is installed in the width adjusting means for detecting a change in the position of the short swing plate; And a control means for controlling the gap adjusting means, the clamping force adjusting means or the variable width device by an electric signal transmitted from the long swing plate deformation amount detecting means or the short swing plate position detecting means.

The clearance adjusting means includes a motor as a driving source, a driving gear coupled to the shaft of the motor, a cylindrical interlocking gear meshed with the outer circumferential surface of the driving gear, and interlocked with the upper and lower sides of the cylindrical interlocking gear, respectively. Preferably, the upper and lower racks are linearly moved, and the fastening cylinder fixing bolts are coupled to end portions of the upper and lower racks and fixed to the rods of the fastening cylinders.

At this time, the bearing is inserted into both sides of the cylindrical interlocking gear, the cover is covered to the outside of the bearing, it is preferable that the box-shaped case is provided on the outside of the cover.

The clamping force adjusting means may include: a clamping force adjusting cylinder including a tube installed on the other side of the spring provided inside the clamping cylinder to be elastically supported by the spring, and a rod having the predetermined flow path; A clamping force adjustment hydraulic pressure supply line connected to a passage formed in a rod of the clamping force adjustment cylinder; It is preferable that the hydraulic pressure supply means for supplying the hydraulic pressure through the hydraulic pressure supply cylinder adjustment cylinder.

The long swing plate deformation amount detecting means preferably comprises a detection rod fixed to the long swing plate in a direction in which the long swing plate opens, and a linear scale sensor for detecting a moving distance of the detection rod.

In addition, the short swing plate position detecting means is preferably composed of a detection rod provided in the variable width device in the width direction in which the short swing plate is changed position, and a linear scale sensor for detecting the moving distance of the detection rod.

Hereinafter, preferred embodiments of the present invention as described above will be described in more detail based on the accompanying drawings.

5 is a perspective view of a device for automatically adjusting the clamping force of a mold for continuous casting according to the present invention, and FIG. 6 is a perspective view illustrating a configuration of a long sliding plate gap adjusting means according to the present invention, and FIG. 7 is an exploded perspective view of FIG. 6. 8 is a cross-sectional view of the coupling state of FIG. 7, FIG. 9 is a cross-sectional view of the fastening cylinder according to the present invention, FIG. 10a is a hydraulic circuit diagram of the fastening cylinder according to the present invention, and FIG. 10b is a clamping force adjusting cylinder of the present invention. Hydraulic circuit diagram.

As shown in the figure, the long side change plate (1) (1 ') and the short side change plate (2) (2') forming a mold are in close contact with each other, and both sides of the long side change plate (1) (1 ') are elastically in close contact with each other. Tightening cylinder 30 is installed.

In the present invention, there is provided a gap adjusting means (10) for compensating for the gap generated between the long and short swing plate during the continuous casting process between the fastening cylinder 30 and the fastening cylinder (30 '), fastening cylinder 30 is provided with a clamping force adjusting means 20 for maintaining a constant clamping force of the long swing plate.

And the long swing plate (1) (1 ') is provided with a long swing plate deformation amount detecting means 50 for detecting the deformation amount of the long swing plate, the outside of the short swing plate to adjust the position of the short swing plate to adjust the width of the mold A width variable device 40 is provided, and the width adjusting device 40 is provided with a short swing plate position detecting unit 60 for detecting a change in position of the short swing plate.

The gap adjusting means, the clamping force adjusting means, or the width variable devices are connected to the control means 70 for performing input, output, and calculation by an electric signal transmitted from the long swing plate deformation amount detecting means or the short swing plate position detecting means. .

As shown in more detail in FIGS. 6 to 8, the clearance adjusting means 10 includes a motor 11, which is a driving source, a drive gear 12 that is coupled to a shaft of the motor 11, and a drive gear. Cylindrical interlocking gear 13 meshed with the outer circumferential surface of the upper and lower upper and lower racks 14, 14 ′ engaged with the upper and lower sides of the cylindrical interlocking gear 13 and linearly engaged, respectively, and the upper and lower racks. (14) (14 ') is coupled to the end of the fastening cylinder fixing bolts (15, 15') fixed to the rod 31 of the fastening cylinder, the cylindrical interlocking gear (13) on both sides of the bearing (16) 16 'is inserted, and covers 17 and 17' are covered outside the bearings 16 and 16 ', and a box-shaped case 18 is formed outside the covers 17 and 17'. ) Is provided.

The clamping force adjusting means 20 is made of a clamping force adjusting cylinder 21 formed on the other side of the clamping cylinder integrally with the clamping cylinder 30. Such a clamping adjusting cylinder 21 is shown in FIG. The rod 31 provided inside the rod 30 and the tube 22 installed on the other side of the spring 32 to be elastically supported by the spring 32 and the rod 23 having a predetermined flow path 23a formed therein. Consists of At this time, the pressure adjusting cylinder hydraulic supply line 24 is connected to the flow path 23a formed on the rod 23 of the clamping force adjusting cylinder, and the hydraulic pressure supply means for supplying hydraulic pressure to the hydraulic pressure adjusting cylinder hydraulic supply line 24. As shown in FIG. 10B, the hydraulic pump 25 and the motor 26 and the flow path switching valve 27 for switching the flow path of the fluid supplied by the hydraulic pump 25 and the motor 26 are provided. . Reference numerals 28 and 29 denote first and second solenoid valves.

In addition, the fastening cylinder hydraulic supply line 34 is connected to the fastening cylinder 30 side, and as shown in FIG. 10A, the hydraulic pump 35, the motor 36, and the flow path switching valve 37 are connected. Reference numerals 38 and 39 are first and second solenoids.

On the other hand, as shown in Figure 5, the long-variable plate deformation amount detecting means 50 is the detection rod 51 is fixed to the long-variable plate in the direction in which the long-variable plate (1) (1 ') and the detection rod 51 It is preferable to use a linear scale sensor composed of a sensor 52 for detecting the moving distance. In addition, the short swing plate position detecting means 60 is a detection rod 61 provided in the width variable device 40 in the width direction in which the short swing plate (2) (2 ') changes position, the movement of the detection rod 61 It consists of a linear scale sensor 62 for detecting a distance.

The operation of the automatic adjustment device of the continuous casting mold according to the present invention configured as described above will be described according to the working process.

First, during maintenance work, the motor 11 of the clearance adjusting means 10 is driven by the control means 70 to bring the long swing plate 1, 1 'and the short swing plate 2, 2' into close contact with each other. By adjusting the reference hydraulic pressure to the adjustment cylinder 21 (which is formed integrally with the clamping cylinder 30), the clamping force adjustment provided on the upper, lower, left, and right sides of the long swing plate 1, 1 'and the short swing plate 2, 2' is provided. By the cylinders 21 to generate a constant clamping force.

In addition, during the casting operation by maintaining a constant hydraulic pressure to the clamping force adjustment cylinder 21 side to maintain the reference clamping force at all times. At this time, when the clamping force is reduced due to the change factor of the clamping force, the amount of clamping force is detected by the long-variable plate deformation amount detecting means 50, and the hydraulic pressure is calculated by calculating the corresponding hydraulic pressure to supply the hydraulic pressure through the hydraulic pressure supply cylinder 24. The pressure is automatically compensated for by supplying, and when the clamping force is increased, the pressure is automatically lowered.

Finally, in the width adjustment operation, as shown in FIG. 10B, the hydraulic supply line 24 of the clamping force adjustment cylinder in which the hydraulic pressure is constantly operated is operated by operating the second solenoid 29 of the flow path conversion valve 27. 10A, at the same time, as shown in FIG. 10A, the hydraulic pressure is supplied by operating the second solenoid 39 toward the clamping cylinder 30 side from which the hydraulic pressure is blocked.

When the hydraulic pressure is supplied to the fastening cylinder 30 in this way, as shown in FIG. 9, the fastening cylinder rod 31 is moved while winning the elastic force of the spring 32 to the long swing plate side (left side in the drawing), and thus the tube 22. Since the state is fixed to the long swing plate (1) (1 '), the gap between the long swing plate (1) (1') of both sides is opened.

The width of the short swing plates 2, 2 'is adjusted by operating the width adjusting device 40 in a state where the long swing plates 1, 1' are spaced apart, whereby the short swing plates 2, 2 'are operated. In accordance with the position of the long variation plate data of the amount of change in the control means 70 is arithmetic process to adjust the interval of the long variation plate (1) (1 ').

After the width adjustment of the short swing plate 2, 2 'is completed, the first solenoid 38 of FIG. 10A is operated to discharge hydraulic pressure injected into the fastening cylinder 30, and at the same time, the first solenoid 28 of FIG. The reference hydraulic pressure is compensated to the clamping force adjustment cylinder 21 side by the operation of the).

The operation flowchart of such width adjustment operation is shown in FIG.

As described above, the automatic adjustment device of the continuous casting mold according to the present invention, because the gap between the long side plate and the short side plate is constantly maintained at the time of the width adjustment operation, the cast steel according to the change of the iron positive pressure and the clamping force of the copper plate There is an effect of preventing the accident of leakage of molten steel caused by cracks in the corners and gaps of the copper plate.

In addition, in the casting operation, there is an effect that can perform a stable operation by preventing a change in the clamping force caused by the various conventional changes.

Claims (6)

In the casting mold for continuous casting comprising a fastening cylinder for the long side plate and the short side plate is in close contact with each other to form a rectangular mold, and elastically close contact with both sides of the long side plate, Gap adjusting means for compensating for the gap generated between the long side plate and the short side plate in the continuous casting process; A clamping force adjusting means installed at one side of the clamping cylinder to maintain a constant clamping force of the long swing plate; A long side plate deformation amount detecting means installed on the long side plate to detect the amount of deformation of the long side plate; A width variable device for controlling the width of the mold by adjusting the position of the short swing plate; Short swing plate position detection means is installed in the width adjusting means for detecting a change in the position of the short swing plate; And a control means for controlling the gap adjusting means, the clamping force adjusting means or the variable width device by an electric signal transmitted from the long swing plate deformation amount detecting means or the short swing plate position detecting means. Automatic adjustment device. The method of claim 1, The gap adjusting means A motor that is a driving source, a drive gear coupled to the shaft of the motor, a cylindrical interlocking gear meshed with the outer circumferential surface of the drive gear, and an image that is linearly engaged by being engaged on the upper and lower sides of the cylindrical interlocking gear, respectively. , The lower rack, and fastening cylinder fixing bolt coupled to the ends of the upper and lower racks and fixed to the rod of the fastening cylinder, characterized in that the automatic adjustment device of the casting mold. The method of claim 2, Bearings are inserted into both side surfaces of the cylindrical interlocking gear, and the cover is covered to the outside of the bearing, and the box-shaped case is provided on the outside of the cover. The method according to claim 1 or 2, The clamping force adjusting means A clamping force adjusting cylinder comprising a tube installed on the other side of the spring provided inside the clamping cylinder and elastically supported by the spring, and a rod formed with the predetermined flow path; A clamping force adjustment hydraulic pressure supply line connected to a passage formed in a rod of the clamping force adjustment cylinder; Automatic adjustment device of the casting mold for continuous casting, characterized in that consisting of hydraulic supply means for supplying hydraulic pressure through the hydraulic pressure supply cylinder adjustment pressure. The method of claim 1, The long swing plate deformation amount detecting means And a detection rod fixed to the long swing plate in a direction in which the long swing plate opens, and a linear scale sensor for detecting a moving distance of the detection rod. The method of claim 1, The short swing plate position detecting means And a detecting rod provided in the variable width device in a width direction in which the short swing plate is changed in position, and a linear scale sensor for detecting a moving distance of the detecting rod.