JPH0543971Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] This invention relates to a continuous casting device for continuously casting strips of copper, aluminum, etc. [Prior Art] Some continuous casting apparatuses as described above use a casting ring in which a casting groove extending in the circumferential direction is formed on the outer circumferential surface. This is done by supporting this casting ring rotatably within a vertical plane, wrapping a casting band around it so as to cover its outer surface except for the upper part, and supporting this casting band by winding it around a plurality of support wheels. It is brought into close contact with the outer surface of the casting wheel and runs at the same speed as the rotation of the casting wheel. Then, molten metal is poured into the space defined between the casting groove and the casting band to cast a strip, and the strip is sequentially pulled out from the other opening. [Problems to be solved by the invention] By the way, the above-mentioned cast strip is manufactured by cutting the steel strip to an appropriate length and welding both ends together, but the process of rolling the steel strip itself In addition to elongation and flexure, deviations in length occur in the width direction due to misalignment when welding both ends. Such deviations accumulate as the casting band circulates, and as a result, the running position of the casting band gradually becomes biased. Then, there were problems such as the side surface of the casting band being damaged by hitting the flange provided on the support ring, shortening its life, or riding up on the flange and deforming it. [Means for Solving the Problems] In order to solve the above-mentioned problems, this invention provides a rotatable casting ring having a casting groove extending in the circumferential direction on its outer circumferential surface, and an outer circumference of the casting ring. It includes an endless casting band wrapped around a part of the surface, and a plurality of support rings that wrap around and support the casting band and bring it into close contact with the casting ring, and at least one of the support rings is connected to the casting ring. It has a tapered outer surface and is movable in the axial direction. [Function] In a tapered support wheel, the casting band tends to move toward the larger diameter, that is, the casting band tends to climb the taper, and this property is used, for example, to maintain the position of a belt conveyor. There is. Therefore, when using a support ring with a taper that expands in diameter in one direction, the casting band is pulled and moved sideways by the force of climbing the taper, and by utilizing this characteristic, the support ring can be positioned in the lateral direction without pressing the side surface of the casting band with a collar or the like. [Example] Hereinafter, an example of this invention will be shown in Figures 1 to 5.
This will be explained with reference to the figure. In these figures, reference numeral 1 denotes a cast ring, on its outer circumferential surface, a casting groove 2 is formed in the circumferential direction, and a rotating shaft 3 is formed.
It is supported by a drive mechanism (not shown) and rotated clockwise in FIG. 1 within a vertical plane. An endless casting band 4 is wound around the casting ring 1 except for the upper circumferential angle of about 115 degrees, and a space is thereby formed between the casting band 4 and the casting groove 2. ing. Molten metal is injected into the casting groove 2 from a nozzle 6 of a tundish 5 installed above the casting wheel 1. Around the casting ring 1, there are five supporting wheels 7a that wrap around and support the casting band 4.
7b...7e are provided, and these support wheels 7
7e are designed to bring the casting band 4 into close contact with the outer periphery of the casting ring 1. In addition, these support wheels 7a
At least one of the members 7e is biased in a direction to push the casting band 4, so as to apply a constant tension to the casting band 4. In addition, 8 is a guide roller,
9 is a pinch roller that pulls out the cast strip material. A cooling water nozzle 10 is provided inside the casting wheel 1, and a fountain nozzle (not shown) is provided outside the casting zone 4 to cool it by injecting water therein. Among the five supporting wheels 7a...7e, all of the supporting wheels other than the second supporting ring 7b have a structure in which flanges 12 are formed on both sides of the cylindrical portion 11, and the center in the width direction is centered on the rotating shaft 13 with the cast ring 1. It is rotatably supported so that it coincides with the center of width. On the other hand, the first support ring 7a has a shape with flanges 12 on both sides of a tapered cylindrical portion 14 whose diameter expands in one direction. A mechanism (not shown) is provided. Note that the amount of this taper is set to an appropriate value depending on the width of the casting band 4, the diameter of the casting ring 1, the spacing between the supporting rings 7a...7e, etc., but for example, if the diameter of the supporting ring is 900 mm,
When the width is 160mm, set the diameter to an extent of increasing by 4mm. Next, the operation of the continuous casting apparatus constructed as described above will be described. Since the casting strip 4 may become rough, rusty, or deformed after being used for several castings, a plurality of strips are manufactured in advance and used one after the other. These casting bands 4 are offset in the width direction with a certain tendency. For example, if a certain casting band 4 tends to shift to the left toward the casting ring 1 in the fifth support ring 7e, the other support ring 7a
...7d has a similar tendency, and support wheel 7e
If the flange 12 is high, it will hit the flange 12, and if the flange 12 is low, the casting band 4 will ride on the flange 12 as shown in FIG. This run-up allowance l is also approximately constant for each casting band 4. At this time, as shown in the figure, the first support wheel 7
When a is attached so as to have a tapered cylindrical portion 13 whose diameter expands in the direction opposite to the direction of displacement, the casting band 4 moves upward to the side where the diameter of the taper increases.
Therefore, when the tapered support ring 7a itself is moved toward the diameter-expanding side, the casting band 4 is also pulled and moved. If this amount of movement is adjusted appropriately, the casting band 4 will be balanced in the center of the fifth support wheel 7a, as shown in FIG. 5, and smooth running will be achieved. Table 1 below shows data obtained in actual operation. As shown in FIG. 4, this indicates the distance by which the first support wheel 7a is adjusted and moved to the right when the casting band 4 tends to move to the left in order to return the movement to its original state. , the moving distance m of the first support wheel 7a and the casting band 4
It can be seen that there is a certain relationship between the moving distance (l+n). At this time, the casting band 4 is attached to the collar 1 of the first support wheel 7a.
Rather than being pushed and moved by 2, the casting band 4
is moved by the force trying to climb up the tapered cylindrical portion 13. Therefore, the casting band 4 can move laterally without hitting the collar 12, and the casting band 4
It will not damage the product and shorten its life. Note that when the taper is in one direction as described above, it cannot be dealt with when the casting band 4 swings toward the expanding diameter side of the taper, but unless the casting band 4 is used for the first time after manufacturing, Since the direction in which it swings is determined, it is only necessary to wind it around the casting ring 1 and the support wheels 7a...7e with the direction of swing matching the diameter reduction side of the taper.

[Table] In order to cope with swinging in either direction as described above, the first support ring 7a is configured to have a tapered cylindrical portion 14 in both directions, as shown in FIG. 6 or FIG. You can. [Effects of the invention] As detailed above, this invention consists of a rotatable casting wheel having a circumferentially extending casting groove formed on its outer circumferential surface, and a winding ring that is wound so as to cover a part of the outer circumferential surface of the casting ring. and a plurality of supporting rings that bring the casting band into close contact with the casting ring, and at least one of the supporting rings has an outer surface tapered and is movable in the axial direction. This method utilizes the characteristic of the casting band to climb a taper to position the casting band in the axial direction, so the simple configuration allows the casting band to run smoothly, preventing damage to the casting band and shortening its life. This has the excellent effect of preventing accidents that may hinder operations.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a tapered support ring according to an embodiment of this invention, and Fig. 2 is a diagram showing the entire continuous casting apparatus.
Fig. 3 is a view in the direction of - arrow in Fig. 2, Fig. 4 is a view in the direction of - arrow in Fig. 2, Fig. 5 is a view showing the state in which the tapered support wheel has been moved, and Figs. 6 and 7 are views of this invention. It is a figure which shows the tapered support ring of another Example. 1...Casting ring, 2...Casting groove, 4...Casting band,
7a...(tapered) first support wheel, 7b, 7
c, 7d, 7e... (no taper) support wheel, 14
...Tapered cylindrical part.

Claims (1)

[Scope of utility model claims] A rotatable casting ring having a circumferentially extending casting groove formed on its outer circumferential surface, an endless casting band that covers a part of the outer circumferential surface of the casting ring except for the upper part, and winding this casting band to form the above-mentioned casting ring. 1. A continuous casting device comprising a plurality of support wheels brought into close contact with a casting wheel, at least one of the support wheels having a tapered outer surface and being movable in the axial direction.