JPS5841006Y2 - Dummy bar meandering prevention device - Google Patents

Description

[Detailed explanation of the invention] This invention is a continuous casting machine for both slab and bloom.
This invention relates to a dummy bar meandering prevention device when performing multiple castings with a strand.

Conventionally, when casting a plurality of blooms or billets in one strand, there is a method of attaching a plurality of dummy bar heads to one dummy bar, but a problem with this method is that the dummy bar cannot be inserted upward.

The upward insertion is very important for the operational efficiency of the continuous casting machine, and this is a major problem.

Another method is to provide a plurality of dummy bars with the same number of dummy bar heads and provide side guide rolls therewith to prevent the dummy bars from meandering and maintain the dummy bar gap.

However, this method requires a large number of side guide rolls, which increases equipment costs.Especially in a continuous slab and bloom casting machine, it is necessary to remove the inner side guide roll when casting a slab, and there is a device for attaching and removing it. is essential and the mechanism is complicated.

The present invention was developed in view of these drawbacks, and provides a device that maintains the gap between the dummy bars and prevents them from meandering by providing an arm rotatable around a shaft attached to each of a plurality of dummy bars. .

This will be explained in detail below using the drawings.

FIG. 1 is a diagram at the initial stage of insertion of the dummy bar, in which 1 is a meandering prevention device, arms 4, 4. It is composed of shafts 5, 5 and stoppers 8, 8.

2 is a mold, and 3 is a slab support roll.

At the initial stage of insertion, the anti-meandering device 1 is housed in the accommodating portion 7 of the dummy bar 6 and moves down in the direction of the arrow through the space formed by the mold 2 and the slab support roll 3 disposed in succession thereto.

Next, as shown in Fig. 2, after passing the lowest position of the slab support roll 3, the arms 4, 4 stored in the dummy bar storage section tilt toward the space due to their own weight, and the tip of the arm tilts toward the space. come into contact with.

Next, the arms 4 are stopped at a fixed position by a stopper 8, as shown in FIG. 3, and the arms 4 are fixed in a state in which their tips are in contact with each other.

By fixing the arm 4 in this manner, when the dummy bar 6°6 continues to descend, it is possible to stably maintain the interval and prevent meandering without using means to restrict the movement of the dummy bar such as side guide rolls. .

The slab support roll 3 in Figures 1 and 2 is indispensable for forming slabs and is separate from the side guide rolls of the dummy bar, and the figures show the case of bloom casting. During slab casting, the inner rolls are removed.

As described above, the present invention provides an inexpensive and reliable dummy bar meandering prevention device.

[Brief explanation of drawings]

Figure 1 is a diagram of the initial stage of insertion of the dummy bar using the device of the present invention, Figure 2 is a diagram of the device of the present invention when it starts to function, and Figure 3 is a detailed diagram of the meandering prevention device of the present invention after it has been installed. It is. 1... Meandering prevention device, 2... Mold, 3... Casting Mf po 1-roll, 4, 4...
...7-m, 5,5...axis, 6...
Dummy par 1... Curved meandering prevention device storage section, 8...
··stopper.

Claims (1)

[Scope of utility model registration request] A dummy bar meandering prevention device comprising arms 4, 4, a shaft 5° 5 rotatable as one body, and stoppers 8, 8.