JPS6025325Y2 - Dummy bar separation device in continuous casting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dummy bar separation device in continuous casting equipment.

To explain the outline of the continuous casting equipment based on Fig. 1, 1 is a single dollar, 2 is a tongue push, 3 is a mold, and 4 is a conveyance of a slab 6 which curves in an arc shape from the mold 3 and extends horizontally. The path is composed of a large number of rollers 5.

Reference numeral 7 denotes a dummy bar separation device provided below the dummy bar separation position A on the conveyance path 4; 8 a guide flapper for guiding upward the dummy bar 9 separated from the slab 6; 1;
0 is a pushing cylinder device for lifting the lower end of the flapper 9 from the illustrated state using the support shaft 11 as a fulcrum, 12 is a hook for supporting the lower end of the lifted flapper 9, and 13 is a hoisting device for lifting the dummy bar 9. , 14 is a dummy bar cover disposed on the operation floor 15 so as to be able to reciprocate in the directions of arrows A and B, and receives the dummy bar 9 lifted by the hoisting device 13 on its upper surface.

In the above configuration, when performing continuous casting, first, the dummy bar 14 is moved in the direction of arrow A, the dummy bar 9 is inserted into the mold 3, and the dummy bar head 9a is positioned in the mold 3.

Next, molten steel is injected into the mold 3 and the dummy bar 9 is pulled in the direction of the arrow, and when the dummy bar head 9a comes to the separation position A, the dummy bar separating device 7 is operated to separate the dummy bar head 9a and the slab 6. That's why.

A conventional dummy bar separating device 7 is shown in FIG.

To explain the outline of this device, reference numeral 17 is a rotating plate that can freely rotate in the directions of arrows 2 and 1 with a support shaft 18 as a fulcrum, and 19 is supported by a pair of guide posts 20 erected on the rotating plate 17. 21 is a separation roller rotatably disposed on the upper surface of the slider 19 via a bearing; 22 is a main body fixed to the upper surface of the rotating plate 17; At the same time, the tip of the piston system is connected to the slider 1 above.
A cylinder device for disconnection connected with a pin to the lower surface of 9, 23
24 is a support that is installed at a location slightly lower than the cylinder device 22 along the slab conveyance path 4;
This is an overturning cylinder device in which the tip of the piston stem is connected with a pin to one of the guide posts 20.

In such a configuration, as shown in the figure, the dummy head 9
When a comes to the separation position A, the separation cylinder device 22
is activated to move the separation roller 21 in the direction of the arrow, and the roller 21 pushes up the dummy bar head 9a.

Then, since the slab 6 is pinched from above and below by the final pinch roller 5a, only the dummy bar head 9a is lifted as shown by the imaginary line, and the slab 6 and the dummy bar 9 are separated.

Next, since the slab 6 continues to move in the direction of the arrow in this state, the overturning cylinder device 24 is activated to rotate the roller 21 in the direction of the arrow H, and this roller 21 moves the slab 6 to prevent collisions.

By the way, in order to prevent the roller 21 from colliding with the slab 6, the roller 21 should be rotated in the direction of the arrow H as soon as possible, but if it is too early, the dummy pawl 9 will be rotated before it escapes in the direction of the arrow. As a result, the dummy paddle head 9a falls and collides with the slab 6.

On the other hand, if the rotation of the roller 21 is too slow, the dummy bar 9
Although the roller 21 can be released in the direction of the arrow, there is a risk that the roller 21 will hit the slab 6.

Furthermore, in recent continuous casting equipment, the slab 6
The moving speed of is varied.

Therefore, in the conventional device described above, it is very difficult to time the roller 21 to be lifted and rotated in the direction of the arrow H, and one mistake may cause a breakout.

Therefore, the present invention provides a dummy pad disconnecting device that solves these problems.

An embodiment of the present invention will be described below with reference to FIGS. 3 and 4.

25 to 27 are three guide posts erected at appropriate intervals along the slab conveyance path 4 on the fixed frame 28, 29.3
0 is a slider that can be raised and lowered by being guided by each guide post 25 to 27, and 31 is a disconnection device whose main body is fixed to the base and whose piston stem tip is connected to the lower surface of the upper slider 29 at the dummy pad disconnection position A with a pin. A cylinder device 32 is also a cylinder device for lifting a tummy bar whose main body is fixed to the base and the tip of the piston stem is connected to the lower surface of the slider 30 on the lower side, and 33 and 34 are respectively mounted on the sliders 29 and 30 via bearings. This is a roller for separating and lifting and holding the dummy bar 9, which is rotatably disposed at the dummy bar 9.

In the above configuration, as shown in FIG.
When a comes to the separation position A, both cylinder devices 31 and 32
As shown by the imaginary lines in FIG. 3, both rollers 33
, 34 are brought into contact with the lower surface of the dummy bar 9.

Next, both the cylinder devices 31 and 32 are further operated to lift the dummy burr head 9a by the separating roller 33 and separate the dummy burr head 9a from the slab 6 as shown by the solid line in FIG. to support the separated state.

Immediately after the separation is completed, only the separation roller 33 is lowered as shown by the imaginary line in FIG. 4 to prevent the roller 33 from hitting the slab 6 which is moving in the direction of the arrow.

In this state, there is nothing to support the dummy bar head 9a, but the lower end corner 35 of this head 9a is attached to the adjacent link 9b.
Since the dummy bar head 9a is in contact with the side surface 36 of FIG.

Next, pull the dummy bar 9 in the direction of the arrow to release it, separate the dummy bar head 9a and the slab 6, and lower the roller 34 before the slab 6 hits the lifting and holding roller 34 to avoid collision. good.

As described above, according to the dummy bar separating device in the continuous casting equipment of the present invention, the sliders 29, 30 and the rollers 33, 34 are raised by the cylinder devices 31 and 32, and the dummy bar head 9a and the casting machine are moved by the dummy bar separating cylinder device 31. Even if the operation of the cylinder device 31 is immediately stopped and the slider 29 and roller 33 are lowered after separating the piece 6, the lifted dummy bar head 9a is still supported by the lifting and holding cylinder device 32. , the dummy bar head 9a will not collide with the slab 6.

In addition, in this state, there is a sufficient gap between the lifting and holding cylinder device 32 and the slab 6, so it is necessary to lift the slab 6 before releasing the dummy bar 9 and preventing the dummy bar head 9a from hitting the slab 6. The slab 6 does not collide with the roller 34 supported by the holding cylinder device 32.

Therefore, even if the moving speed of the slab changes variously, the dummy bar can be separated regardless of the change, and its practicality is excellent.

[Brief Description of the Drawings] Fig. 1 is a schematic explanatory diagram of continuous casting equipment, Fig. 2 is a front view showing a conventional example, Figs. 3 and 4 show an embodiment of the present invention, and Fig. 3 4 is a front view before the dummy bar is removed, and FIG. 4 is a front view after the dummy bar is removed. 4... Slab conveyance path, 5... a-ra,
9... Dummy bar, 9a... Dummy bar head, 31... Cylinder device for separating dummy bar, 32... Cylinder device for lifting and holding dummy bar, A... ...Dummy pad separation position.

Claims (1)

[Scope of utility model registration request] A dummy bar separation slider 29 that can be raised and lowered is provided along a guide post 25.26 provided below the dummy bar separation position A of the slab conveyance path 4, and a guide post 26.27 provided immediately below the slider 29 is provided. A dummy bar lifting and holding slider 30 that can be raised and lowered along the dummy bar is provided, and a roller 33.34 that contacts the lower surface of the dummy bar 9 is disposed on the upper surface of each slider 29.30, and the dummy bar lifts and lowers each slider 29.30 separately. Separation cylinder device 31
and a cylinder device 32 for lifting and holding the dummy paper in continuous casting equipment.