JPH065745U - Sealing device for dummy bar head for continuous casting machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a sealing device that simplifies the sealing work between the dummy bar head and the mold, alleviates the peak work at the start of casting, and automates the sealing work to save labor. [Configuration] Side 2a of the dummy bar head 2 on the mold side
Further, the guide hole 4 is provided in the horizontal direction, the guide pin 5 is inserted into the guide hole 4, and the inverted L-shaped width adjustment attachment 7 is provided outside the guide pin 5. And
When the dummy bar head 2 is inserted into the mold, the gap between the inner side surfaces 3a on both short sides of the mold 3 and the side surface 2a on the mold side of the dummy bar head 2 is adjusted along the guide hole 4 by the guide pin 5, that is, the width. This is performed by moving the width adjusting portion 6 of the adjustment attachment 7 so that the set distance becomes constant.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sealing device that seals a gap between a dummy bar head and a mold in a dummy bar that pulls out a slab from the mold at the start of casting in a continuous casting machine.

[0002]

[Prior art]

 Conventionally, the sealing work between the dummy bar head and the mold at the start of casting in a continuous casting machine, especially when changing the width of the cast slab, or after inserting the dummy bar head, the gap between the dummy bar head and the mold When the size becomes abnormally large, the work to seal the space between the dummy bar head and the mold is to first remove the dummy bar from the mold, change the width of the dummy bar head with an attachment, etc. Insert into mold.

After that, for example, a wedge-shaped sealing material such as a refractory board (see Japanese Utility Model Laid-Open No. 21543) is manually inserted into the gap between the mold and the dummy bar head. This prevents molten steel from leaking through the gap between the mold and the dummy bar head.

The sealing operation will be described in detail. First, as shown in FIG. 4, the width of the dummy bar head 20 is changed by the attachment 21, and then the dummy bar head 20 is inserted into the mold 22 again.

Next, as shown in FIG. 5, the gap between the dummy bar head 20 and the mold 22 set to 5 to 15 mm by the attachment 21 is manually sealed with a sealing material 23 such as a fireproof board. Be done.

[0006]

[Problems to be solved by this device]

 However, in the above-mentioned conventional sealing work, since the dummy bar is once pulled out from the mold and the attachment is adjusted, the adjusted dummy bar is inserted again into the mold, and the sealing work is carried out. Lost time will occur in the preparation time, and the production capacity of the continuous casting machine will decrease.

Further, in general, when the dummy bar head is inserted into the continuous casting machine, a deviation occurs between the center of the casting mold and the center of the dummy bar head, and this deviation hinders the sealing work of the dummy bar head. . That is, as shown in FIG. 6, when the dummy bar is inserted, center deviation of the dummy bar head 20 occurs, and in an extreme case, the gap between the mold 22 and the dummy bar head 20 may be about 30 mm.

On the other hand, the variation in the gap between the dummy bar head and the mold hinders the automation of the sealing work performed by inserting the sealing material into the gap between the dummy bar head and the mold.

This invention was made in view of the above-mentioned circumstances, and the purpose thereof is to simplify the sealing work of the dummy bar head and to alleviate the peak work at the start of casting, and further, to perform the sealing work. It is an object of the present invention to provide a dummy bar head sealing device for a continuous casting machine, which can be provided for labor saving by remote automation which is performed automatically and reliably.

[0010]

[Means for Solving the Problems]

 The sealing device according to the present invention is provided with guide pins inserted into horizontal guide holes provided on both sides of the dummy bar head on the mold side and the guide pins. The width adjusting attachment includes a width adjusting portion formed in a V shape. Further, the guide pin is movable in the horizontal direction in the guide hole, and by the movement in the horizontal direction, the width adjusting section is movable in the width direction of the dummy bar head.

[0011] When the dummy bar head is inserted into the mold, misalignment of the dummy bar head can be easily performed in the mold by the width adjusting attachment including the guide pin and the width adjusting section described above. , Easy to adjust. This eliminates any loss time for misalignment adjustment.

Further, it is possible to omit the work of exchanging the attachment member for adjusting the dummy bar width for preparing the next trial between the casting trials. Furthermore, by mounting the above-mentioned attachment for width adjustment on the dummy bar head, it is possible to install the dummy bar head seal automation device, which was difficult to automate in the past.

[0013]

【Example】

 Hereinafter, a sealing device for a dummy bar head for a continuous casting machine according to the present invention will be described with reference to the illustrated embodiment.

A sealing device 1 for freely setting a gap distance between both short side inner side surfaces 3 a of the mold 3 and the side surface 2 a of the dummy bar head 2 on the mold 3 side when the dummy bar head 2 is inserted into the mold 3. (See FIGS. 1 and 2) are provided on the guide pin 5 and the guide pin 5 inserted into the horizontal guide holes 4 provided on both side surfaces 2a of the dummy bar head 2 on the mold 3 side. The width adjusting attachment 7 is composed of a molten steel side 6a and a mold side 6b, and a width adjusting portion 6 formed in a substantially inverted L-shaped cross section.

The guide pin 5 is movable in the guide hole 4 in the horizontal direction, and the horizontal adjustment of the guide pin 5 causes the width adjusting portion 6 to move in the width direction of the dummy bar head 2. The sealing operation of the gap between the dummy bar head 2 and the mold 3 using the sealing device 1 having such a structure is performed as described below.

That is, when the width of the cast slab is changed, or after the dummy bar head is inserted and the gap between the dummy bar head and the mold becomes abnormally large, the width adjusting attachment 7 provided on the dummy bar head 2 The width adjusting section 6 of is moved in the mold 3.

The width adjusting portion 6 is moved by being guided by the guide pin 5 which moves horizontally in the guide hole 4. At this time, the mold side 6b of the width adjusting unit 6 adjusts the width of the dummy bar head 2, and the molten steel side 6a of the width adjusting unit 6 closes the gap between the dummy bar head 2 and the mold 3.

The movement of the width adjusting unit 6 sets the gap distance between the inner side surfaces 3a on both short sides of the mold 3 and the side surface 2a of the dummy bar head 2 on the mold 3 side to a set distance.

After that, for example, a softened seal material 8 is inserted into the gap between the dummy bar head 2 and the mold 3 and into the gap between the dummy bar head 2 and the mold 3, and hot air is blown immediately after the seal material is inserted. Then, the seal material 8 is arranged by an automatic sealing device (not shown) that seals the gap between the dummy bar head 2 and the mold 3 by curing the seal material 8 at a high temperature.

In this way, the sealing operation by the sealing device 1 of the present invention is performed. Further, as described above, according to the sealing device 1 of the invention, the gap between the dummy bar head 2 and the mold 3 can be always maintained at a fixed set distance by the width adjusting attachment 7. Since the set distance can be easily maintained, the above-mentioned automatic sealing device can be used without any trouble.

When the sealing material is provided by the above-described automatic sealing device, a large pressure is applied to the gap between the dummy bar head 2 and the mold 3 because the sealing material is softened when the gap is inserted. Since it is not added, it is not necessary to securely fix the width adjustment attachment 7 to the dummy bar head 2.

Therefore, the attachment of the width adjusting attachment 7 to the dummy bar head 2 may be supported by the guide pin 5 inserted into the guide hole 4. Further, by this, the width adjusting portion 6 of the width adjusting attachment 7 can be easily moved.

FIG. 3 shows another aspect of the width adjusting attachment 7 in the sealing device 1 of the present invention.

The sealing device 1 in this case is used when manually inserting the seal material 8 into the gap between the dummy bar head 2 and the mold 3. Since the sealing material 8 here is a hardening material such as a refractory board, a large pressure is applied to the gap. Therefore, the width adjustment attachment 7 must be completely fixed to the dummy bar head 2. Therefore, the width adjusting attachment 7 is completely fixed to the dummy bar head 2 with the fixing bolt 9.

[0025]

[Effect of device]

 According to the sealing device of the present invention, the width adjusting attachment can easily adjust the gap between the dummy bar head and the mold to the set distance. Therefore, the work of sealing the gap between the dame bar head and the mold can be simplified, and the peak work at the start of casting can be alleviated.

Further, since the gap between the dummy bar head and the mold can be always maintained at a constant set distance by the width adjusting attachment, the sealing work can be performed automatically and reliably, and the labor saving can be achieved by remote automation. Can be donated.

Further, with the width adjusting attachment, the gap between the dummy bar head and the mold, that is, the width of the dummy bar head can be easily adjusted in the mold. Therefore, it is possible to eliminate the occurrence of lost time for adjusting the misalignment.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a sealing device for a dummy bar head for a continuous casting machine according to the present invention.

FIG. 2 is an exploded perspective view of a dummy bar head and a width adjusting attachment in the sealing device of the present invention.

FIG. 3 is a schematic cross-sectional view showing another aspect of the width adjusting attachment in the sealing device of the present invention.

FIG. 4 is a schematic perspective view showing a state in which a gap between a conventional dummy bar head and a mold is adjusted.

FIG. 5 is a schematic cross-sectional view showing a sealing work state of a gap between a conventional dummy bar head and a mold.

FIG. 6 is a schematic cross-sectional view showing a state where a dummy bar head is displaced in a mold.

[Explanation of symbols]

1 ... Sealing device, 2 ... Dummy bar head, 2a ... Side surface, 3
... Mold, 3a ... Inner side surfaces on both short sides, 4 ... Guide hole, 5 ... Guide pin, 6 ... Width adjusting part, 6a ... Molten steel side, 6b ... Mold side, 7 ... Width adjusting attachment, 8 ... Sealing material, 9 … Fixing bolt.

Claims (1)

[Scope of utility model registration request] 1. A sealing device for freely setting a gap distance between inner side surfaces of both short sides of a mold and a side surface of the dummy bar head on the side of the mold when the dummy bar head is inserted into the mold. It consists of guide pins inserted into horizontal guide holes provided on both side surfaces, and a width adjusting portion provided on the guide pins and having a substantially inverted L-shaped cross section from the molten steel side and the mold side. A width adjusting attachment is provided, and the guide pin is movable in the guide hole in the horizontal direction, and the horizontal adjustment of the guide pin causes the width adjusting portion to move in the width direction of the dummy bar head. Sealing device for a dummy bar head for a continuous casting machine, which is movable.