JPH032357Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a belt straightening device for a continuous casting machine having a twin-belt type or cast ring/belt type mold.

(Problems of the prior art to be solved by the invention) Since the metal belt used in the mold of the belt type continuous casting machine is a consumable item, its cost is included in the cost of the product. Users also need to stock up on a lot of spare parts so as not to disrupt operations, but since the belt is thin, it is not easy to handle, and deformation or internal stress may occur during transportation or storage. There are a lot of them, and they require a lot of space to store.

On the other hand, when manufacturing endless belts by welding, deformation and uneven internal stress will occur in the belt, and special leveling equipment is required to remove this, so only manufacturers equipped with this equipment can produce endless belts. There was a problem that the belt could not be manufactured and the manufacturing cost of the belt was extremely high.

In addition, a method for straightening the belt in a casting wheel/belt type continuous casting machine is being considered (Japanese Patent Laid-Open Publication No.
(Refer to Publication No. 52-68823), it employs a complex correction mechanism with a large number of correction rolls arranged in a staggered manner.
In addition to being expensive, the adjustment range for belt straightening is narrow, and there are problems in that it is difficult to perform a straightening operation that corresponds to the properties of the belt.

(Purpose of the invention) The present invention was devised in order to solve the above-mentioned conventional problems, and its purpose is to make it possible to reliably straighten the belt while it is attached to a continuous casting machine.

(Structure of the invention) The belt straightening device for a continuous casting machine according to the invention includes:
A pair of straightening rolls and a pressing roll supported by a pair of guide rolls that are rotatable in opposite directions to the straightening rolls and whose positions can be individually adjusted by a rotation adjustment device are sandwiched between the belt. It is characterized by being placed facing each other.

(Example) An example of the present invention will be described below with reference to a drawing showing a twin belt continuous casting machine.

In the figure, 1 is a lower belt inclined downward from the horizontal, and the lower belt 1 is connected to a drive pulley 2 and a tensioning device 3.
It is wound between a tension pulley 4 that can move forward and backward toward the counter-driving pulley 2 side, and is supported by a main body frame 6 via a side plate 5 that supports them.
Reference numeral 7 designates an upper belt parallel to the lower belt 1, and the upper belt 7 is wound between the drive pulley 8 and a tension pulley 10 that can move back and forth toward the counter-drive pulley 8 by means of a tension device 9, and supports these. The main body frame 6 is supported via a side plate 11 on a top carriage 13 which is attached to the main body frame 6 so as to be movable up and down by an elevating device 12. Reference numeral 14 denotes an endless annular dam block, which is sandwiched between its sides so as to move together with the upper and lower belts 1 and 7, and is guided and supported by guide rolls and support rolls (not shown), and is connected to the main body frame 6 via these. is supported by 15 is a back-up roll, and the back-up roll 15 has a side plate 5 supporting it;
It is attached to the main body frame 6 and the top carriage 13 via 11, and supports the upper and lower belts 1 and 7 that constitute the mold together with the dam block 14.

The belt straightening device of the present invention is used in such a twin-belt continuous casting machine when the tension devices 3 and 9 move back the tension pulleys 4 and 10 to loosen the upper and lower belts 1 and 7. 7
It can be attached to the side that does not make up the mold or the side that does make up the mold.

The belt straightening device of the present invention includes a pair of straightening rolls 16 and a pressing roll 17. This device of the present invention will be explained in a state where it is installed on the side of the lower belt 1 that does not constitute the mold in order to straighten the lower belt 1. It is attached to the side plate 5 via. The lower surface of this straightening roll 16 is located on the pass line so as to guide the lower belt 1. The pressing roll 17 is
It is supported on a pair of guide rolls 20, and the pressing roll 17 and the straightening roll 16 are placed opposite to each other with the lower belt 1 in between. Guide roll 2
0 is rotatably attached to the upper end of an arm 22 attached to a bearing frame 21 so as to be individually rotatable in a direction opposite to the guide roll 20 via a support shaft 20', and the support shaft 20' is attached to a bolt 24. Side arm 2
It is fixed at 2. Further, the arm 22 is tiltably supported by an adjustment bolt 23 attached to the bearing frame 21 so as to be movable back and forth in the direction facing the guide roll. The bearing frame 21 has two opposing side plates 25 connected to a bottom plate 2 at the longitudinally intermediate portion thereof.
Brackets 27, 2 are connected by 6 and are provided on the side plate 5 at the longitudinal end of the opposing side plate 25.
8 with a pin 29. Opposing side plate 2
A rib 30 is provided at the longitudinal end of the guide roll 5, and the rib 30 prevents the pressing roll 17 from being pulled out in the longitudinal direction of the guide roll.

(Function) When the adjustment bolt 23 is screwed into the bearing frame 21, the arm 22 rotates inward in the direction facing the guide roll, and the guide roll 2 supported by the arm 22
Since the pressing roll 17 rises while being pushed out from between zero, the pressing roll 17 presses the lower belt 1 against the straightening roll 16. At this time, the correction reaction force received from the lower belt 1 is received by the guide roll 20 via the pressing roll 17. The pressing roll 17 can be adjusted to move by a certain amount in any direction illustrated by arrows A, B, and C in FIG. Therefore, when the tension device 3 advances the tension pulley 4 in the belt tensioning direction to apply tension to the lower belt 1, the lower belt 1 can be given an optimal curvature according to the amount of strain. For this reason, when the lower belt 1 is continuously rotated via the drive pulley 2 by a drive device (not shown) while applying tension, the lower belt 1 is corrected in an optimal state.

When the correction of the lower belt 1 is completed, the lower belt 1
is loosened, and then the pin 29 is pulled out to remove the bearing frame 21 from the side plate 5, thereby removing the pressing roll 17 together with the bearing frame 21, and also removing the straightening roll 16. However, the straightening roll 16 may be used for the next straightening without being removed from the continuous casting machine. After removing the device of the present invention, tension is applied to the lower belt 1 and the continuous casting machine is set to operating condition.

When straightening the upper and lower belts 1 and 7 on the mold side, either remove the back-up roll 15 and attach the straightening roll 16 in its place, or use the back-up roll 15 as it is as the straightening roll 16, and use the straightening roll 16 as shown in FIG. As shown, the upper belt 7 is raised via the top carriage 13 by the lifting device 12 so that the pressing roll 17 is placed opposite the straightening roll 16 with the upper and lower belts 1 and 7 interposed therebetween. (X in Figure 2 indicates the situation where the device of the present invention is attached to the side of the mold structure of the upper belt 7.) Then, after the correction work, the device of the present invention is removed and the above-mentioned Set the continuous casting machine to operating condition in the same way.

Although this embodiment was used for straightening the belt of a twin-belt type continuous casting machine, it is of course applicable to belt straightening of a casting wheel/belt type continuous casting machine.

(Effects of the invention) As described above, the present invention effectively utilizes the tensioning device and drive device provided in the continuous casting machine, attaches the belt to the continuous casting machine, and adjusts the curvature of the belt according to the amount of strain. This configuration allows the user to maintain and manage the belt to ensure that it is extremely flat without distortion and has uniform internal stress, making it possible to manufacture extremely high-quality products (slabs) and to improve belt manufacturing. In addition, the life of the belt used can be extended. Therefore, it is not necessary to stock a large amount of spare belts, the operational efficiency can be improved, and the product cost can be reduced.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing a twin belt continuous casting machine, Figure 2 is an enlarged side view of the same, and Figure 3 is a
4 is a partially enlarged view of FIG. 3, and FIG. 5 is a sectional view taken along line 3 in FIG. 1...lower belt, 7...upper belt, 2,8...
Drive pulley, 3, 9... Tension device, 4, 10...
Tension pulley, 5, 11... Side plate, 6... Body frame, 12... Lifting device, 13... Top cartridge, 14... Dam block, 15... Back up roll, 16... Straightening roll, 17...
...Press roll, 20...Guide roll, 21...
Bearing frame, 22... Arm, 23... Adjustment bolt, 24... Fixing bolt, 25... Opposing side plate,
26... Bottom plate, 27, 28... Bracket, 29
...pin, 30...rib.

Claims (1)

[Scope of utility model registration request] A pair of straightening rolls and a pressing roll supported by a pair of guide rolls that are rotatable in opposite directions to the straightening rolls and whose positions can be individually adjusted by a rotation adjustment device are sandwiched between the belt. A belt straightening device for a belt-type continuous casting machine, characterized in that they are arranged facing each other.