JPH054171B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a continuous casting machine for producing plate-shaped slabs in the form of thin slabs, and particularly relates to a continuous casting machine for producing plate-shaped slabs in the form of thin slabs.
Suitable for improving the quality of the short side of a plate-shaped slab cast by a mold consisting of a pair of long side molds and a pair of side plates arranged oppositely between them to form a short side mold. Concerning continuous casting machines.

[Conventional technology]

Conventionally, a twin-belt type continuous casting machine, for example, has been known as a continuous casting machine for producing plate-shaped slabs in the form of thin slabs. A mold is constituted by the belt and a pair of side plates, which are arranged oppositely at both ends of the double belt in the width direction between them and supported by side plate supports, and molten metal is continuously supplied to the mold. When casting a plate-shaped slab, the long side of the slab is shaped by a double-belt mold, and the short side of the slab is shaped by a side plate. That is, the double belt becomes a long-side mold, and the side plate becomes a short-side mold. And in this twin belt type continuous casting machine,
As disclosed in JP-A-58-218349, the vertical type has a nearly constant mold interval between twin belts, and the upstream part of the twin belt mold has a constant curvature as described in JP-A-58-218349. Several types of drawing dies have been proposed, and in all of them, generally, the side plates that form the short sides of the slab are fixedly attached to the side plate supports.

In such a twin belt continuous casting machine,
As will be described later, a speed difference occurs between the long side shell of a plate-shaped cast piece formed by a twin-belt mold and the short side shell formed by the side plate, causing breakage of the shell and resulting in operational failure. In addition to being stable, there was a problem in that the quality of the short sides of the slab deteriorated.

To solve this problem, Japanese Patent Application Laid-Open No. 59-153553 provides a self-lubricating function to the side plate, and also installs a vibration generator on the outside of the side plate support to cause slight vibration between the side plate support and the side plate. It has been proposed that this self-lubricating function and micro-vibration improve the sliding between the side plate and the short side shell, reduce the speed difference between the long side shell and the short side shell, and reduce the possibility of shell breakage.

[Problems to be Solved by the Invention] In a conventional twin-belt continuous casting machine in which a side plate for shaping the short side of a plate-shaped slab is fixedly attached to a side plate support, the side plate does not connect the slab shell downstream. The shell on the short side of the slab formed on this side plate is transferred downstream based on the bonding force with the shell on the long side of the slab, which is formed and transferred by the twin belts. . At this time, since the length of the long side of the slab, that is, the plate width of the slab is as large as 600 to 1,600 mm, the slab is transferred downstream and as cooling progresses, the width of the slab contracts. When the plate width of the slab shrinks in this way, when the side plates are arranged in parallel, the short side shell becomes separated from the side plates. To prevent this, the side plates are generally arranged so as to be inclined toward the downstream side of the slab. That is, the distance between the pair of opposing side plates is narrower on the downstream side than on the upstream side of the mold, and has a tapered shape.

By the way, during steady operation, a twin belt continuous casting machine produces slabs with a thickness of about 20 to 50 mm at a speed of 10 to 15 m/min.
At startup, the casting start-up speed is 5m/min.
Moderate and slow. Therefore, in the process of transition from startup to steady operation, the casting speed rapidly increases from a low speed range to a high speed range. Furthermore, depending on the casting conditions, it may be necessary to change the casting speed. The amount of shrinkage of the width of the slab plate described above increases as the casting speed decreases. For this reason, the amount of taper between the side plates is generally set large in consideration of the amount of contraction of the plate width at low speeds.

In addition, in the drawing type casting machine described in JP-A No. 58-218349, the upper part of the side plate is made of a refractory material that does not form a shell, and the lower part of the side plate is made of a cooling metal to form the short side of the slab. Therefore, if the distance between the side plates does not exactly match the width of the slab at the joint between the refractory on the top of the side plate and the metal on the bottom of the side plate, the distance between the metal surface of the bottom of the side plate and the long side of the slab will be A gap is created between the ends and the molten metal enters into this gap, resulting in double skin on the short side of the slab, or in the worst case, an accident where the molten metal leaks outside. Therefore, especially in this type of continuous casting machine, the above-mentioned taper between the side plates is set large so that the side plates always press against the long sides of the slab and no gaps are created between them.

However, when the taper amount is increased in this way, as the slab is transferred downstream, the short side of the slab shaped by the side plate is strongly pressed against the side plate,
A large force that compresses the slab in the long side direction is generated between the side plate and the short side of the slab. For this reason, a restraining force acts on the shell on the short side of the slab formed by the side plate, making it difficult to transport this short side shell by the shell on the long side of the casting side formed with twin belts, and both A speed difference occurs between the two, and the mold side shell breaks as shown in FIG.

That is, in FIG. 7, reference numerals 1a and 1b indicate double belts, and a side plate 2 (only one is shown) is arranged between the double belts 1a and 1b.
A, 1b and the side plate 2 constitute a mold, and within this mold, the long side shells 4a, 4b of the plate-shaped slab 3 are formed by the twin belts 1a, 1b, and the long side shells 4a, 4b are formed by the side plate 2. A short side shell 5 is formed.

By the above-mentioned restraining force acting between the side plate 2 and the short side shell 5 of the slab 3, the long side shell 4
a, 4b are pulled by the twin belts 1a, 1b and try to be transferred downstream, while the short side shell 5 tries to stay in that position, and eventually the short side shell and the long side shell are separated. Fractures 6a and 6b occur between them, and the molten metal 7 inside leaks out.

On the other hand, the structure described in JP-A-59-153553 was proposed to solve this problem, but in this proposal, a vibration generator is installed outside the side plate support, and the side plate The entire support body and side plates are vibrated. Therefore, the mass of the vibrated body becomes large, and a large-scale vibration generator is required. In addition, in addition to the large mass of the vibrated body, the distance between the vibration generator and the side plate is large, making it difficult to control the vibration waveform of the side plate. Lateral vibrations that vibrate in other directions also occur, and these lateral vibrations act on parts other than the slab, such as the twin belts,
There was a problem in that the seal between the side plate and the twin belts was damaged and other problems were caused.

The object of the present invention is to prevent the collapse of the slab shell due to the restraint of the side plate by applying vibration to the side plate, and to provide a continuous casting method that allows the vibration generator to have a compact structure and prevents the vibration from affecting other members. The goal is to provide opportunities.

[Means for solving problems]

The above object consists of a pair of long-side molds that are arranged opposite to each other and rotated synchronously, and a pair of short-side molds that are arranged oppositely at both ends of the long-side molds in the axial direction between the pair of long-side molds to form short-side molds. and a side plate support disposed on the outside of the side plate to support the side plate, the pair of long side molds and the pair of side plates constitute a mold having a rectangular cross section, and this mold At the same time, the mold surfaces of a pair of opposing side plates are tapered so that the distance between them is narrower on the downstream side of the mold than on the upstream side of the mold. In a continuous casting machine arranged at an inclined angle, a protrusion extending above the top of the side plate support is provided at the upper end of the side plate, and a support roller is disposed between the top of the side plate support and this protrusion. The side plate is supported movably in the width direction of the long side mold along the long side mold, and the side plate is driven to the side of the side plate support beam facing the side plate, and the side plate is moved in the width direction. This is achieved by arranging a vibration generator that generates vibrations.

[Effect]

By driving the side plate with a vibration generator and applying rapid cycle micro-vibration in the width direction of the long side mold,
An open state is instantaneously created between the side plate and the short side shell of the slab formed by the side plate, and the restraint of the short side shell by the side plate is released. This ensures that the short-side shell is transported downstream by the long-side shell that moves together with the long-side mold. At this time, the vibration generator only needs to have a compact structure because it vibrates only the side plate, and since it directly vibrates the side plate with a small mass, it is easy to control the vibration waveform, and it is possible to generate optimal vibration without affecting other parts. It becomes possible.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. This embodiment is an example in which the present invention is applied to a vertical twin-belt continuous casting machine. In the figure,
Reference numerals 10 and 11 designate twin belts forming a pair of long-side molds that are arranged opposite to each other and rotated synchronously.
2, 13 and 14, 15, and are continuously rotated synchronously in the direction of the arrow by driving one of these rollers, for example, the lower roller 13, 15. Between the twin belts 10 and 11, side plates 1 forming short side molds are located at both ends in the width direction of the twin belts.
6 and 17 are arranged facing each other, and these side plates 16 and 17
is supported by side plate supports 18, 19 arranged on the outside thereof. A tundish 20 is installed above the twin belts 10, 11, and a nozzle 21 of the tundish 20 hangs down between the twin belts.

With this configuration, while the twin belts 10 and 11 are continuously rotated, the molten metal is poured from the nozzle 21 of the tundish 20 into the mold having a rectangular cross section and constituted by the twin belts 10 and 11 and the side plates 16 and 17. When poured, the molten metal is cooled by the mold, long side shells 22 and 23 are formed by the twin belts 10 and 11, and short side shells 2 are formed by the side plates 16 and 17.
4 and 25 are shaped, thereby casting a slab 26, and this slab 26 is transported downstream by twin belts 10 and 11.

As described above, the long side shells 22 and 23 formed by the twin belts 10 and 11 have their plate widths contracted from W1 to W2 as they go downstream from the hot water level S. This shrinkage amount W1-W2=ΔW is approximately several mm, assuming that the distance between the sections in contact with the side plates 16 and 17 is 500 mm, but it changes depending on the casting speed. When the casting speed is 5 m/min during startup operation, ΔW = approximately 4 mm, and when the casting speed is 10 m/min during steady operation, ΔW = approximately 2 mm. The mold surfaces of the side plates 16 and 17 are designed so that even if the slab shrinks, there will be no gap between the short side of the slab and the mold surface, preventing molten metal from entering. It is tapered toward the side. The amount of taper is set to be large enough to correspond to the large amount of contraction ΔW=4 mm at low speeds.

There is a cooling pad 2 on the back of the twin belts 10 and 11.
7, 28 are arranged, and these cooling pads 27, 28
High-pressure cooling water is supplied from the headers 29 and 30 in the belt through a number of nozzles 31 and 32 to the gap between the twin belts 10 and 11 and these pads, thereby cooling the belt and reducing the static pressure load of the molten metal applied to the belt. Provide support. Further, on both sides of the twin belts 10 and 11, these belts are pressed against the side plates 16 and 17 by this high-pressure cooling water. At this time, if the pressure of the cooling water is kept constant and is the same for both the upper and lower sides, the belts 10 and 11 will be pressed against the side plates 16 and 17 with a constant pressing force, and the side plates 16 and 17 will be pressed by the high-pressure cooling water on the upper and lower sides. Static pressure load is supported via belts 10 and 11.

According to the present invention, the side plate 16 is movably supported by a side plate support 18, and a vibration generator 41 is disposed between the side plate 16 and the side plate support 18, giving microvibrations only to the side plate 16. .

That is, as shown in FIG. 4, a protrusion 40 extending above the top of the side plate support 18 is provided at the upper end of the side plate 16, and a support roller 54 is disposed between the top of the side plate support 18 and this protrusion 40. The side plate 16 is supported movably in the width direction of the twin belts along the mold surfaces of the twin belts 10 and 11, and the vibration generator 41 is arranged on the side of the side plate support 18 facing the side plate 16. This vibration generator 41 drives the side plate 16 to give it slight vibration in the width direction of the twin belts. The support roller 54 is rotatably attached to the upper end protrusion 40 of the side plate 16.

Similar protrusions, support rollers, and vibration generators are arranged on the sides of the side plate 17 and the side plate support 19, but since these are substantially the same as those for the side plate 16, illustration and description thereof will be omitted.

The detailed structure of the vibration generator 41 will be explained. In this embodiment, the vibration generator 41 includes two upper and lower guide shafts 42 and 43, one end of which is attached to the side plate 16 and the other end of which extends into the side plate support 18.
arranged around the guide shafts 42, 43,
It consists of springs 44, 45 that act to draw the side plate 16 to the side plate support 18, and an actuator 41A arranged between two guide shafts 42, 43.

As shown in FIG. 4, the guide shafts 42, 43
is made from a bolt with threads cut on both ends, and is attached to the side plate 16 by nuts 46 and 47 attached to one screw, nuts 48 and 49 are also attached to the other screw, and this part is attached to the side plate 16. Spreading into chambers 50, 51 formed in the support 18, springs 44, 45 are arranged in a compressed state between their nuts 48, 49 and the walls of the chambers 50, 51. The nuts 48 and 49 also prevent the side plate 16 from popping out abnormally. The central portions of the guide shafts 42, 43 are supported by universal bearings 52, 53 mounted on the side plate support 18.

Since the actuator 41A applies slight vibrations only to the side plate 16, it does not require large power and has an extremely compact structure overall. It is configured. That is, the actuator 41A is composed of a cylinder chamber 56 formed in the side plate support 18, and a ram 57 which is housed in the cylinder chamber 56 in a sealed and movable manner and whose tip engages with the side plate 16.

The cylinder chamber 56 is connected to a hydraulic conduit 58, and this hydraulic conduit 58 is connected to a hydraulic pump 60 and a tank 61 via a servo valve 59. By controlling the servo valve 59, the cylinder chamber 56 is connected to a hydraulic pump 60. The tank 61 is alternately connected to the tank 61 in a fast cycle.

The servo valve 59 is controlled by a control device 62,
This control device 62 generates a predetermined electric signal according to a vibration command device 63 and instructions from this vibration command device 63, and sends it to a solenoid 59a of a servo valve 59.
It consists of a micro-vibration control box 64 that sends signals to the micro-vibration control box 64. The control device 62 also includes a sensor 6 that is provided on the side plate support 18 and detects the vibration state of the side plate 16.
5, and inputs the output signal of the sensor 65 to the micro-vibration control box 64, thereby causing the sensor 65 to
The vibration waveform of the minute vibration given to the side plate 16 by the actuator 41A is directly controlled by feeding back the output signal of the actuator 41A.

As usual, the side plate supports 18 and 19 are provided with side plates 16 and 1 corresponding to the width of the slab to be cast.
Moving devices 66 and 67 are provided for laterally moving and setting the position of the moving device 66.
The two screws 68, 69 attached to the side plate support 18 and the screws 68, 69
A casing 70 that supports the casing 70 movably in the longitudinal direction.
The worms 73, 7 consist of wheels 71, 72 which are rotatably disposed inside the casing 70 and engage with the screws 68, 69 through the central hole, and worms 73, 74 which engage with the wheels 71, 72.
By rotating screws 68 and 69
is moved in the longitudinal direction, and the side plate supports 18 and 19 are moved in the lateral direction. The moving device 67 is similarly configured.

These moving devices 66 and 67 are generally operated before operation of the continuous casting machine to set the slab width, but they measure the width of the cast slab, and based on this measurement value, the width of the slab is adjusted. It can also be operated while the continuous casting machine is running to correct errors.

In such a configuration, the twin belts 10, 11
When the molten metal is poured from the nozzle 21 of the tundish 20 into the mold formed by the twin belts and the side plates 16 and 17, the slab 26 is cast as described above and is transferred downward. Ru. At this time, the mold surfaces of the side plates 16 and 17 are tilted downward, so even if the width of the long side shells 22 and 23 formed by the double belts 10 and 11 shrinks downstream, the side plates There is no gap between the mold surface and the short side of the slab. However, side plates 16, 17
The taper amount of is set to a size commensurate with the large amount of shrinkage at slow casting speed during start-up operation, so when moving to steady operation, the amount of shrinkage decreases,
The short sides of the slab come into strong contact with the mold surfaces of the side plates 16 and 17. As a result, the short side shells 24 and 25 of the slab 26 are restrained by the side plates 16 and 17, and it becomes difficult to transfer the short side shells by transferring the long side shells 22 and 23 by the twin belts 10 and 11.

On the other hand, the actuator 41 of the vibration generator 41
Micro-vibration control box 6 of control device 62 for A
4, a vibration command is issued by the vibration command device 63 at the same time as the continuous casting machine starts operating, and as described above, by controlling the servo valve 59, the cylinder chamber 56 of the cylinder device is controlled by the hydraulic pump 60 and the tank 61 in a fast cycle. Communicate alternately. Cylinder chamber 5
6 communicates with the hydraulic pump 60, pressure oil is supplied to the cylinder chamber, and the ram 57 is connected to the side plates 16, 17.
move it towards. At this time, if the strength of the upper and lower springs 44 and 45 is the same, then the side plate 16
As the support roller 54 slides on the top surface of the side plate support 18, it overcomes the springs 44 and 45 and is displaced inward in the width direction of the twin belts. Next, when the cylinder chamber 56 communicates with the tank 61, the springs 44 and 45 pull the side plate 16 and return it to its original position, and the ram 57 is also pushed by the side plate and the pressure oil in the cylinder chamber 56 is discharged to the tank 61. Ru. Such movement of the side plate in both directions is possible because the upper and lower surfaces of the side plate are supported by a constant static pressure load by the high-pressure cooling water from the cooling pads 27 and 28, and the movement resistance is constant. 10,
It is carried out smoothly along the mold surface of 11. This is repeated to give the side plate 16 microvibration in a fast cycle. The same applies to the side plate 17.

When a slight vibration is applied to the side plates 16, 17 in this way, the gap between the mold surfaces of the side plates 16, 17 and the short side shells 24, 25 of the slab 26 is instantaneously opened in response to the minute vibration. occurs, and the aforementioned restraint of the short side shell by the side plate is released. As a result, when shifting to steady operation, the short side shell does not stagnate, the short side shell is pulled by the long side shell, and no breakage occurs between the short side shell and the long side shell. The slab is reliably transported downstream.

In such slight vibrations of the side plates 16 and 17,
The actuator 41A of the vibration generator 41 engages the cam 57 of the cylinder device with the side plates 16 and 17, and directly drives only the side plates.
Therefore, the mass of the vibrated body is small, and it is easy to apply vibrations, and since the driving force of the actuator 41A is directly transmitted to the side plates, lateral vibrations do not occur in the side plates 16 and 17, and the vibration waveform can be controlled. This makes it easy to apply the optimum micro-vibration to the side plate. Therefore, the slight vibration of the side plate causes the twin belts 10, 1
It does not act on parts other than the slab such as 1,
Due to slight vibration, the side plates 16, 17 and the double belts 10, 1
This does not cause problems such as damage to the seal between the two.

It should be noted that the above description of the operation is based on the spring 44,
Although the case where the strength of the side plates 16 and 45 are the same has been explained, it is also possible to have different strengths.
17 begins to vibrate with different amplitudes in the upper and lower parts. This expands the control range of the micro-vibration given to the side plate, making it possible to provide a more preferable form of micro-vibration, such as a mode of micro-vibration that is compatible with the shrinkage of the slab width.

Next, another embodiment of the present invention will be described with reference to FIGS. 5 and 6.

The above-mentioned embodiment is an example in which the present invention is applied to a vertical twin-belt continuous casting machine, but the embodiment shown in Figs. 5 and 6 is an example in which the present invention is applied to a drawing-type continuous casting machine. The same members as in the first embodiment are given the same reference numerals.

The narrowing type continuous casting machine has twin belts 170,
The upstream part of the mold 171 has a mold shape with a constant curvature that widens toward the mold opening, and fan-shaped side plates are installed between the twin belts 170 and 171 in this part at both ends in the width direction of the twin belts. 172 (only one shown) are arranged opposite to each other. This side plate 172
The upper part is framed by metal picture frames 173, 174, and the inside is made of refractory material 175,
The entire lower part is composed of cooling metal 176,
In the upper part, only the metal frames 173, 174 are cooled by the metal, and shells 177, 178 are formed on the short sides of the slab, and no shell is formed in the refractory 174, and these shells 177, 1
78 with twin belts 170, 171 and side plate 17
This effectively prevents leakage of hot metal from the space between the metal 176 and the metal 176, and it is not until the lower part that the metal 176 is cooled that a shell is formed on the entire short side of the slab.

The mold surfaces of the pair of side plates 172 arranged oppositely are
They are arranged in a tapered manner so that the distance between them is narrower downstream of the mold than upstream of the mold. As in the first embodiment, this side plate 172 is supported by a support roller (not shown) on the side plate support 18.
Between the side plate 172 and the side plate support 18 is arranged a vibration generating device 41, which is also composed of a similar cylinder device, a guide shaft, a spring 44, etc.

In this example as well, as in the first example,
It will be obvious that optimum microvibration is applied to the side plate 172 to ensure that the short side of the slab is transferred downstream without being constrained by the mold surface of the side plate 172.

Although not shown, the present invention can also be applied to an inclined continuous casting machine such as a Hazellet type.

Furthermore, although the above embodiment is an example in which the present invention is applied to a twin-belt type continuous casting machine, it can also be applied to a twin-drum type continuous casting machine having twin drums as a pair of long-side molds arranged oppositely and rotated synchronously. , similar to the twin belt type, there is one short side mold between both sides of the twin drums.
A mold with a rectangular cross section is constructed by arranging a pair of side plates facing each other, and even if the present invention is applied to such a twin-drum continuous casting machine, the compact structure will similarly cause slight vibrations to the side plates, It is possible to release the restriction of the short side of the slab by the side plate mold surface, and to achieve the effect of improving the transfer of the slab.

Furthermore, the above embodiment is an example in which a cylinder device is used as the actuator of the vibration generator, but
Not limited to this, other structures such as a mechanical vibration generator using a cam may be used, and even when a cylinder device is used, in the illustrated embodiment, pressure oil is supplied only to one side of the cylinder chamber, Although a single-action method was used for the return movement of the ram by pulling back a spring, a double-action method in which pressurized oil is supplied to both sides of the cylinder chamber may also be used. When this double action system is adopted, the guide shafts 42, 43, springs 44, 45, etc. can also be omitted.

〔Effect of the invention〕

As explained above, according to the present invention, regardless of changes in casting speed, the short side shell of the slab formed by the side plate is pulled by the long side shell and moves reliably, and the rupture of the slab shell is prevented. Since this does not occur, stable casting is possible, and the short side shell of the slab is moved well, the quality of the short side of the slab can be improved. In addition, since the vibration generator directly drives only the side plate, it has a simple and compact structure, which is economical and workable, and does not generate unnecessary vibrations on the side plate, eliminating the influence on other parts. However, in this sense as well, stable casting and improvement in slab quality are possible.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the upstream portion of a vertical twin-belt continuous casting machine according to an embodiment of the present invention, FIG. 2 is a partially sectional side view of the same continuous casting machine, and FIG. 1 is a sectional view taken along the - line in FIG. 1, FIG. 4 is an enlarged detailed view of the vibration generator part shown in FIG. 1, and FIG. The second twin-belt continuous casting machine
6 is a sectional view taken along the line - in FIG. 5, and FIG. 7 is a slab formed by twin belts and side plates in a conventional continuous casting machine. FIG. Explanation of codes, 10, 11, 170, 171...
Double belt, 16, 17, 72...Side plate, 18, 1
9... Side plate support, 26... Slab, 40... Protrusion, 41... Vibration generator, 41A... Actuator, 42, 43... Guide shaft, 44, 4
5...Spring, 52, 53...Swivel bearing, 5
4...Support roller, 56...Cylinder chamber, 57...
...Ram, 65...sensor.

Claims (1)

[Claims] 1. A pair of long-side molds that are arranged opposite to each other and rotated synchronously, and a short-side mold that is arranged oppositely between the pair of long-side molds at both ends in the width direction of the long-side molds. and a side plate support disposed outside the side plates to support the side plates, and the pair of long side molds and the pair of side plates constitute a mold having a rectangular cross section. , a plate-shaped cast side is manufactured by continuously supplying molten metal to this mold, and the distance between the mold surfaces of a pair of opposing side plates is narrower on the downstream side of the mold than on the upstream side of the mold. In a continuous casting machine which is arranged in a tapered manner as shown in FIG. is arranged to support the side plate so as to be movable in the width direction of the long side mold along the long side mold, and drive the side plate to the side of the side plate support facing the side plate so that the side plate is moved in the width direction of the long side mold. A continuous casting machine characterized by being equipped with a vibration generator that generates minute vibrations. 2. The continuous casting machine according to claim 1, wherein the vibration generator includes an actuator built into the side plate support. 3. The actuator is a single-action cylinder device that applies a driving force only in a direction that moves the side plate away from the side plate support, and the vibration generator further includes a spring that acts to attract the side plate to the side plate support. A continuous casting machine according to claim 2, characterized in that it comprises means. 4. A sensor for detecting the vibration state of the side plate is provided on the side plate support, and the output signal of this sensor is fed back to directly control the vibration waveform of the microvibration applied to the side plate by the vibration generator. A continuous casting machine according to claim 1, characterized in that: 5. The vibration generator includes at least two guide shafts, one end of which is attached to the side plate and the other end of which extends into the side plate support, and at least two guide shafts that are provided on the side plate support and support these two guide shafts, respectively. at least two swivel bearings arranged around the guide shaft, at least two springs acting to attract the side plate to the side plate support, and a cylinder device arranged between the two guide shafts. A continuous casting machine according to claim 1, characterized in that the continuous casting machine has: