JPH0137226B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dummy bar centering device for drawing multiple strips of cast slabs in a continuous casting machine.

Generally, when operating a continuous casting machine,
As a preparatory work, the dummy barker was moved perpendicular to the strand and positioned above the slab passage.
The roller table of the dummy barker is tilted, the dummy bar stored in the dummy barker is pulled out to the exit side of the strand by the drive device, and the dummy bar is inserted into the mold by reverse rotation of the pinch rolls that constitute the slab passage. It will be done.

At this time, if the cast piece to be manufactured is a single row, there is no problem because the head of the dummy bar has a single structure, but if the head of a dummy bar that pulls out multiple cast pieces is Since the tip is formed into a fork shape corresponding to the number of strips, it is necessary to insert it into the mold precisely at the center of the mold. Otherwise, the cast piece may not be pulled out smoothly, and in some cases, it may not be possible to pull it out. However, currently, when the dummy bar head is inserted into the mold,
There is a lot of variation from side to side, and sometimes it may not fit inside the mold. In such a case,
If the dummy bar is pulled out and reinserted, or if it is pulled out to the top of the mold, the dummy bar is pulled up above the mold and then the left and right dimensions are adjusted, but the dummy bar becomes longer than necessary. It is extremely uneconomical both in terms of time and money, as it is complicated to operate or difficult to operate.

This invention has been made with the aim of eliminating these conventional problems, and the gist thereof is to provide a dummy bar tip exchanger with a plurality of grooves formed in the dummy bar tip replacement part so as to be in sliding contact with both inner surfaces of the gaps or the lower part or the other part. A centering roll that can be moved upwards and downwards and a cylinder rod that presses both outer surfaces of the dummy bar tip from the outside are provided, as well as a cylinder rod that presses both outer surfaces of the common body connected to the rear of the head on the dummy bar cart from the outside. It is characterized by being equipped with a cylinder rod.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. 1 is a mold, 2 is a curved part and a horizontal part, which are constituted by a support roller 3 and a pinch roller 4 arranged in the slab drawing direction. 5 is a chain link type dummy bar, and 6 is a slab passage. Slab 6
The dummy bar 5 is pulled out by the pull-out drive of the support roller 3.
Subsequently, the slab is continuously pulled out from the mold 1 and conveyed on the slab passage 2 in the direction of arrow a.

A dummy bar storage device A is provided in the horizontal portion of the slab passage 2, that is, in the middle of the pinch rolls 4, for separating the dummy bar 5 from the slab 6 that is pulled out from the mold 1 following the dummy bar 5.

This dummy bar storage device A includes a trolley 7 consisting of bifurcated legs and joint material that can be moved and installed in a direction perpendicular to the direction of slab conveyance, and an arc-shaped roller table 8 provided on the trolley 7. , a dummy bar pulling arm 11 that can be rotated in forward and reverse directions and operated by a drive device 10 provided in the arc portion of the arc-shaped roller table 8, and a slab separating device 9. The dummy bar 5 separated from the slab 6 by the operation of step 9 is stored on the roller table 8 via the pulling arm 11, or the stored dummy bar 5 is pulled out to the horizontal part of the slab passage 2. ing.

In a continuous casting machine equipped with such a dummy bar storage device A, the present invention provides a dummy bar centering device on the exit side of the drive roll unit B installed at the dummy bar pullout position of the slab passage 2.

The dummy bar centering device installed on the exit side of drive roll unit B
The roll stand 12 is made up of a centering roll 15 that slides on both inner surfaces of the gap corresponding to each strip of the dummy bar replacement section, and a cylinder 16 that presses both outer surfaces of the dummy bar replacement section from the outside. A centering roll 17 is provided at the tip.

The centering rolls 15 are assembled in pairs at a predetermined interval so as to be in sliding contact with both inner surfaces of each strip of the cast strips to be drawn out, and the centering rolls 15 are paired with each other at a predetermined distance from each other so as to be in sliding contact with the inner surfaces of the plurality of cast strips to be drawn.
3 via a cylinder 22 so that it can move up and down.

Incidentally, it is preferable that a tapered member 15' is provided at the insertion side tip of the upper end of the pair of centering rolls 15 so that it can be easily inserted into the gap between each strip.

Further, the cart 7 of the dummy bar storage device A is provided with a cylinder 23 having a centering roll 24 at its tip end for pressing both outer surfaces of the dummy bar common body from the outside.

Since the present invention is configured as described above, in order to insert the dummy bar 5 into the mold 1 prior to operation, the traveling device of the dummy bar storage device A is driven to position the dummy bar storage device A on the slab passage 2. After that, the slab separating device 9 is moved down so that the tip of the roller table 8 faces above the slab passage 2. Next, the drive device 10 of the dummy bar pulling arm 11 is driven in reverse to pull out the dummy bar 5 into the slab passage 2. When the tip of the dummy bar passes through the centering roll 15 and reaches a predetermined position 5', the movement of the dummy bar is stopped. Stop it once. With this stoppage function, the centering roll 15 is moved upward to come into sliding contact with the inner surface of each fork-shaped gap of the dummy bar 5, and the cylinder 16 is actuated to press the outer surface of the dummy bar head from the outside to press the dummy bar 5. Center the tip in place.

Next, both outer surfaces of the common body forming the rear part of the dummy bar 5 are pressed from the outside by the cylinder 23 provided on the trolley 7 of the dummy bar storage device A, thereby centering the front and rear parts of the dummy bar 5 ( (See Figure 6).

Further, in this state, the dummy bar 5 is moved (inserted) a predetermined distance onto the slab passage 2 by using the reverse rotation drive of the dummy bar pulling arm 11 and the self-gravity of the dummy bar 5. This ensures the centering of the dummy bar 5 (see Figure 7).

Thereafter, each drive part of the centering device is opened to make the dummy bar 5 free, and the dummy bar is placed in the mold 1 by reverse rotation driving of the pinch roll 4 constituting the slab passage 2 and the drive roll of the drive roll unit. When 5 is brought in, dummy bar 5
is inserted while maintaining its normal, centered state, without causing any deviations such as tilting to the left or right or variations, as in the past, and the intended purpose of the invention can be reliably achieved. .

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing the overall configuration of a curved continuous casting machine, Figure 2 is an enlarged view of the main parts of Figure 1, and Figure 3 is a front sectional view of Figure 5. Front view along line a to a in Figure 5, b in Figure 5 on the right half
4 shows a front sectional view taken along the line ˜b, FIG. 4 is a plan view taken along the line ˜ of FIG. 3, FIG. 5 is a side view, and FIG.
FIG. 7 and FIG. 7 are explanatory plan views of dummy bar centering. 1... Mold, 2... Slab passage (3... Support roller, 4... Pinch roll), 5... Dummy bar, 6... Slab, 7... Cart, 8... Roller table, 9... Separation device, 10... Drive device, 1
1...Arm, 12...Roll stand, 13...
...Connecting member of drive roll unit, 15...Centering roll, 15'...Sliding member, 16,2
2, 23... Cylinder, 17, 24... Centering roll, A... Dummy bar storage device, B...
Drive roll unit, a... slab drawing direction, b...
...Dummy bar insertion direction.

Claims (1)

[Claims] 1. On a trolley that can be moved and installed from the side of the slab passage,
In a continuous casting machine equipped with a dummy bar storage device that stores dummy bars for pulling out multiple strips of slabs, the drive roll unit installed at the dummy bar pull-out position in the slab passage has both inner surfaces of each strip gap formed at the tip of the dummy bar. A centering device consisting of a vertically movable centering roll that slides into contact with the dummy bar and a device that presses both outer surfaces of the dummy bar from the outside, and presses both outer surfaces of the dummy bar common body from the outside on the dummy bar storage cart. A dummy bar centering device for a multi-strip cast piece, characterized in that it is equipped with a device for.