JPH0211962Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a position adjusting device for a slab support roll 2 that supports and guides slabs 1 of various shapes in continuous casting equipment.

(Prior Art) Conventionally, as shown in FIG. 4, the slab supporting rolls of continuous casting equipment are made by aligning two facing slab supporting rolls 2 to match the cross-sectional dimensions of the slab 1 and screwing them together with screws 22. The position was set by moving and opening and closing.

The opening/closing operation is performed by rotating the right-handed and left-handed screws 22 through the electric motor 10 and reducer 9, moving the roll chock 24 with a built-in female screw 23, and using the pulse generator provided on the non-drive side of the electric motor 10. The position of the slab support roll 2 was determined by measuring the position using the rotor 11.

In addition, in order to evenly press the slab 1 with two or more slab support rolls 2 in order to prevent internal cracks and surface cracks in the slab 1, the slab support device shown in FIG. By changing the phase of the slab supporting roll 2, slab supporting devices were arranged in multiple stages at different positions.

(Problems to be Solved by the Invention) In the prior art shown in FIG. 4, it was impossible to provide two or more slab support rolls 2 at the same plane position of the slab 1.

In order to provide two or more slab support rolls 2, above or below the slab support device shown in FIG.
That is, in the length direction of the slab 1, there is another slab support device.
It was necessary to arrange the slab support rolls 2 in one or two stages, and to change the phase of the slab support rolls 2.

Therefore, the outer periphery of the slab 1 cannot be pressed evenly by the plurality of slab support rolls 2 within the same plane, which causes internal cracks and surface cracks in the slab 1.

Furthermore, since the slab support devices are provided in multiple stages, the equipment cost is high, and it takes a considerable amount of time to adjust the position of the slab support roll 2.

In addition, in the conventional method, the slab support roll 2 was moved open and closed by the screw 22, so the necessary positional accuracy could not be obtained due to the pitch error of the screw 22, the unevenness of the backlash with the female screw 23, etc.
There was also variation in the positional accuracy between the slab supporting rolls 2 of the slab supporting device arranged in stages or three stages.

(Means for Solving the Problems) The present invention has a scroll disk 5 having a hole in the center through which a cast slab can pass, which is rotatably provided on a guide frame 12, and a spiral disk provided on the scroll disk 5. A slab support in continuous casting equipment, characterized in that a plurality of movable pieces 4 that fit into the grooves of the cast piece are disposed so as to be movable in the radial direction, and a slab support roll unit 3 is placed on each of the movable pieces 4. This is a roll position adjustment device. In FIG. 2, a slab support roll unit 3 of a device that presses the outer periphery of a slab 1 with a plurality of slab support rolls 2 and supports and guides the slab 1 moves in the centripetal direction and moves freely on a scroll board 5. Through 4,
Multiple sets are arranged. Hollow disk scroll plate 5
A spiral groove is provided in the plane of the slab 1, and the slab 1 rotates approximately at the center of the slab. In FIG. 1, a plurality of movable pieces 4 having claws that fit into the grooves of the scroll plate 5 are arranged on the scroll plate 5 and are movable in the centripetal direction, and the slab support rolls 2 are attached to the movable pieces 4. The slab support roll unit 3 having the following properties is placed on the machine, and the plurality of slab support rolls 2 are simultaneously moved in the direction of pressing the slab 1 and opened and closed while being synchronized.

(Function) The position adjustment device for the slab support rolls 2 according to the present invention has a plurality of slab support rolls 2 on the outer periphery of the slab 1.
is arranged, the scroll board 5 is rotated, the movement of the movable piece 4 is used, and at the same time, the position can be adjusted with high precision by synchronizing the movement of the moving piece 4.

The scroll disk 5 is often used in the chuck mechanism of lathes, and its positional accuracy and synchronization accuracy are much higher than those of conventional screws 22, and the scroll disk 5 can be applied to the position adjustment device of the present invention. , the positional accuracy of the slab support roll 2 was improved.

In the conventional method shown in FIG. 4, it is not possible to arrange two or more slab supporting rolls 2 in the same plane, but in the present invention, as shown in FIG. A large number of slab support rolls 2 or more can be arranged, the outer periphery of the slab 1 can be evenly pressed, supported and guided, and there is no need to provide slab support devices in multiple stages as in the conventional method.

(Example) The present invention will be explained based on the illustrated example. FIG. 1 is a longitudinal cross-sectional view of a slab support device according to the present invention that supports and guides a slab 1 by a plurality of slab support rolls 2, and FIG. Figure 3 is a diagram of an embodiment of the slab support roll unit 3, in which the slab 1 is used to control the pressure applied to the slab 1.
A contact and pressure detection device is installed.

In Fig. 1, slab 1 moving in the direction of the arrow
A slab support roll 2 for supporting and guiding the slab is disposed in a slab support roll unit 3. The slab support roll unit 3 is placed on a movable piece 4, and the rotation of the scroll plate 5 moves the movable piece 4. Move with open and close. The rotation of the scroll board 5 is driven by the electric motor 1.
0, a gear provided on the outer periphery of the scroll disk 5 via a reduction gear 9, a drive shaft 8, and a pinion 7, and the scroll disk 5 is rotated while being guided by a guide bush 6. Reference numeral 12 denotes a guide frame that supports the scroll plate 5 and supports the slab support roll unit 3.
It has a built-in guide for opening and closing the door in the centripetal and horizontal directions.

In FIG. 2, the slab support roll unit 3 moves in the closing direction when the scroll disk 5 is rotated clockwise, and moves in the opening direction when the scroll disk 5 is rotated counterclockwise.

In Fig. 3, the slab support roll 2 and the roll chock 13 are connected to a low load spring 14 and a high load spring 1.
7 and an adjusting bolt 20, and the detection rod 16 disposed on the roll chock 13 is
3, that is, it moves due to the movement of the slab support roll 2,
It is guided by the inner surface of a hollow rod cover 18 fixedly attached to the chock receiving frame 21, and the amount of movement is transmitted to the displacement detector 19.

During casting, the slab support roll 2 is connected to the low load spring 14.
When it moves by the amount of deflection δ, it is detected that it is in contact with the slab 1, and δ+ containing the high load spring 17 is detected.
When it moves by the amount of storage x, it is detected that the pressing force is appropriate.

In this way, the pressure applied to the slab 1 is detected, and the scroll plate 5 is rotated to obtain the appropriate pressure.
The slab support roll unit 3 is moved and controlled.

In FIG. 1, a pulse generator 11 provided on the non-drive side of the electric motor 10 is for detecting the position of the slab support roll unit 3.

(Effects of the invention) As shown in the above embodiments, the present invention allows a plurality of slab support rolls 2 to be synchronized simultaneously by rotating the scroll plate 5, and to adjust the position with high precision, and to be able to adjust the positions within the same plane. Since two or more slab support rolls 2 can be arranged around the outer circumference of the slab 1, the slab 1 can be supported and guided evenly and with an appropriate pressure, thereby preventing internal cracks or surface cracks in the slab 1. Can prevent cracking,
The quality of the slab 1 can be significantly improved.

In addition, in the conventional method, only two slab support rolls 2 can be arranged in the same plane, and in order to press the outer circumference of the slab 1 uniformly, the slab support device must be used to adjust the phase of the slab support rolls 2. However, in the present invention, only one stage is required, the structure is simple, and the equipment cost can be significantly reduced. Furthermore, since there is only one stage, only one set of position adjustment is required, and the time required to set the position of the slab support rolls 2 can be significantly shortened.

As described above, the effect of the position adjusting device for the slab support roll 2 of the present invention is great.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the slab supporting device of the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a conceptual vertical sectional view of an embodiment of the slab supporting roll unit. FIG. 4 shows an illustration of a prior art article. 1... Slab, 2... Slab support roll, 3... Slab support roll unit, 4... Moving piece, 5...
scroll board.

Claims (1)

[Scope of utility model registration request] A scroll disk having a hole in the center through which the slab can pass is rotatably installed on the guide frame, and a plurality of movable pieces that fit into spiral grooves provided on the scroll disk can be moved in radial directions. 1. An apparatus for adjusting the position of slab support rolls in continuous casting equipment, characterized in that a slab support roll unit is placed on each of the movable pieces.