JPH0245923B2 - ROORUHABACHOSEISOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll width adjusting device that can arbitrarily adjust the body width of a horizontal roll.

(Prior art and its problems) In rolling H-section steel, it is necessary to change the width of the horizontal rolls of a universal mill or an edging mill in order to roll H-section steel of different dimensions. Rolls corresponding to the dimensions of the steel sections were prepared, rearranged, and rolled. However, this method has disadvantages in that a large number of rolls must be prepared, and it is necessary to change the rolls for each rolling size, which requires a long time to change the rolls.

For this reason, for the purpose of reducing the number of rolls to be prepared, there is a method as shown in FIG. 11, for example, as shown in Japanese Utility Model Application No. 51-20034. This is because one roll is divided into two in the width direction, and when rolling an H-section steel 1 with the required inner web width dimension B, a spacer 3 of a predetermined size is inserted between the two divided rolls 2a and 2b. This is interposed and integrated with the roll using bolts 4 or the like. However, in such a rolling roll, spacers 3 of different thicknesses are required depending on the web width dimension B of the H-shaped steel product, and a large variety of spacers must be prepared. In addition, to ensure dimensional accuracy, it is necessary to control and adjust the spacer thickness, and it takes a lot of time to replace the spacer and adjust the roll width, so it is not suitable for online replacement work that requires quick roll changes. However, there is a drawback that offline reclassification has to be done.

To overcome these drawbacks, for example, a device shown in FIG. 12, shown in Japanese Patent Application Laid-Open No. 60-72603, has been proposed for use with horizontal rolls for rolling H-beam steel. However, with this device, the roll width value must be detected by directly measuring the roll width itself, and it is extremely difficult to perform online measurement equipped with a guide for the rolled material, and it is difficult to detect the roll width with sufficient accuracy. It's almost impossible. Therefore, when adjusting the roll width, it is necessary to pull the roll off-line and directly measure the roll width. In addition, the roll width can be adjusted using screws carved on the outer periphery of the hollow rolls 12a and 12b, and a thrust ring 17 that is rotatable relative to the roll shaft 13 that passes through the hollow rolls.
This is done by engaging the screws carved in holes 17a and 17b and adjusting the relative rotation between the thrust ring and the hollow roll, so that, as shown in FIG. The rolling reaction force is transmitted to the roll shaft 13 through the roll 12a, a screw on the outer periphery of the roll shaft, and a thrust ring 17a that can rotate freely relative to the roll at its edge, so that the thrust ring is applied to the end face of the roll. A large bending deformation occurs due to the rolling reaction force, and since the structure is such that the thrust force once separated from the roll shaft 13 returns to the roll shaft 13 again, there is no path to support the rolling reaction force applied to the roll end face. The problem is that even if the rolling reaction force changes slightly, the deformation is large, the dimension between the rolls 12a and 12b changes greatly, and the dimensional accuracy of the web inner width of the rolled product is poor.

(Means for Solving the Problems) In order to solve the problems, the present invention provides (1) a shaft fixed roll 72 fixed to the roll shaft 24 as shown in FIG. , a hollow shaft roll 73 having a hollow shaft 22 fitted to the roll shaft so as to be movable in the axial direction and connected in the rotating direction with a sliding key is provided, and the hollow shaft is rotatably and fixed in the axial direction to a bearing 28a. A screw 25 is provided on the inner periphery of the bearing side end of the hollow shaft, and a roll width adjustment screw is provided that is screwed into the screw,
Place the tip of the roll width adjustment screw on the roll shaft 2.
A bearing box 29a which is pressably provided on the four end faces and holds the bearing 28a on the hollow shaft roll side is fixed to the bearing housing 31a in the roll axis direction, and the roll shaft 24 is rotated by the bearing 28b on the fixed shaft roll side. This roll width adjusting device is characterized in that a bearing box 29b for holding the bearing is provided in a bearing housing 31b so as to be freely movable and fixed in the axial direction.

(2) Also, as shown in Fig. 10, the roll shaft 24
Two hollow shaft rolls 73 are provided to replace the hollow shaft 22, which are fitted together so as to be movable in the axial direction and connected in the rotational direction with a sliding key, and the hollow shafts are rotatably and fixed to the bearing 28 in the axial direction. A screw 25 is provided on the inner periphery of the bearing side end of the hollow shaft, a roll width adjustment screw is provided that is screwed into the screw, and the tip of the roll width adjustment screw is connected to the roll shaft 24.
A bearing box 29a that is pressably provided on the end face and holds one bearing 28a is fixed to the bearing housing 31a in the axial direction, and the other bearing 28b is provided to be rotatably and fixed to the roll shaft 24 in the axial direction. , is a roll width adjusting device characterized in that a bearing box 29b for holding the bearing is provided in a housing 31b so as to be movable in the direction of the roll bearing.

In the above configuration, the shaft-fixed roll 72 is one in which the horizontal roll 21 is fixed to the roll shaft 24. The fixing method may be a blind fit or the like, or the roll and shaft may be integrated.

The hollow shaft roll 73 is composed of a horizontal roll 21 and a hollow shaft 22. The fixing method may be a blind fit similar to the above-mentioned fixing roll, or the roll and the shaft may be constructed as one piece.

Further, the sliding key 23 may be any rotational force transmitting element such as a spline that functions as a sliding key.

(Function) By configuring the roll width adjustment device as described above, it becomes possible to detect the roll width adjustment amount from the roll end, and it is possible to accurately adjust the roll width adjustment amount to the target roll width adjustment amount online. Diagram b
As shown in FIG. 13A, compared to the prior art shown in FIG.
a, 21b, a hollow shaft 22a, a roll width adjustment screw 26a, a spherical seat 27a, and a roll shaft 24.There are no elements of bending deformation other than the roll, and the deformation path of the constituent members is short, so the roll width displacement is small (so-called roll width (Examples) The present invention will be described in detail below based on Examples.

FIG. 1 is a diagram showing an embodiment of the present invention.
is a rolled material, an upper horizontal roll 20 consisting of horizontal rolls 20a and 20b, and horizontal rolls 21a and 21b.
It is rolled by a lower horizontal roll consisting of a lower horizontal roll and left and right vertical rolls 8 and 9.

Hereinafter, the details of the present invention will be explained with reference to FIG. 2 regarding the lower horizontal roll 21.
The same is true for 0. Lower horizontal roll 21
are horizontal rolls 21a, 21 divided into two in the width direction.
b, one horizontal roll 21a has a hollow shaft 2
It is formed on the outer periphery of 2a. The other horizontal roll 21b is formed on the outer periphery of the roll shaft 24. The hollow shaft 22a is externally fitted onto the roll shaft 24 so as to be movable in the axial direction, and is configured to be prevented from relative rotation by a sliding key 23a. That is, the roll shaft 24 has a sliding key 2 in the hollow part of the hollow shaft 22a.
3a extends only in the axial direction so as to be movable relative to the hollow shaft 22a. A threaded portion 25a is carved on the inner circumference near the shaft end of the hollow shaft 22a.
A roll width adjustment screw 26a is screwed into this. A spherical seat 27a acts as a self-aligning spacer that equalizes the load distribution between the roll width adjusting screw 26a and the roll shaft 24. 29a, 2
A bearing box 9b rotatably supports the lower horizontal roll 21 via bearings 28a and 28b. The bearing box 29a is held immovably in the roll axis direction by keeper plates 30a, 30a' and housings 31a, 31a'. On the other hand, the bearing box 29b is supported in the roll axis direction by gap adjusting devices 32, 32' attached to the housings 31b, 31b'. With this configuration, the interval between the horizontal rolls 21a and 21b, that is, the width of the lower horizontal roll 21 can be set arbitrarily.

The operation when increasing the lower horizontal roll width by W will be described below. First, gap adjustment device 3
2, 32' are actuated in the axial direction by at least W in the direction in which the bearing box 29b moves away from the bearing box 29a. Next, roll width adjustment screw 26a
is rotated and rolled down by W in the direction of the roll shaft 24. Next, the gap adjusting devices 32, 32' are operated in a direction in which the bearing box 29b moves toward the bearing box 29a, so that the axial gap between the roll width adjusting screw 26a, the spherical seat 27a, and the roll shaft 24 is below the allowable value. Set it so that Gap adjustment device 32,
32' may be a bolt, wedge, or any other mechanism, but as shown in FIG. 2, it is constituted by a hydraulic cylinder and by setting a constant pressure,
It is desirable to set the axial clearance between 6a, 27a, and 24 to zero and to apply a preload.

By operating in this way, the roll width adjustment screw 26a and the gap adjustment device 32,
32', the hollow shaft 22a, that is, the horizontal roll 21a is connected to the roll shaft 24, that is, the horizontal roll 21.
A horizontal roll is provided which is set to open in a direction opposite to b in the axial direction by W, and thus has a roll width increased by W.

In this operation example, we have explained the case where the gap adjustment device is opened in advance during operation and pushed in again after setting the roll width. When a spring is used as the gap adjusting device, it is sufficient to simply adjust the roll width adjusting screw 26a by lowering the roll width adjusting screw 26a without special operation of the gap adjusting device. Moreover, although the case where the roll width is increased has been described, the same applies to the case where the roll width is decreased. In addition, the horizontal roll 21a and the hollow shaft 22a
may be integrated, and the horizontal roll 21b and the roll shaft 2
4 may also be integrated. In addition, the sliding key 23a includes a roll shaft 24 and a hollow shaft 22a instead of a key.
(or the horizontal roll 21a) may be engaged by spline. Further, for the reasons mentioned above, it is preferable to provide the spherical seat 27a as shown in FIG. 2, but it is also possible to configure the roll width adjusting screw 26a to be in direct contact with the roll shaft 24 without providing this.
Although not shown, it is preferable to provide a stopper to prevent the roll width adjusting screw 26a from rotating relative to the hollow shaft 22a during rolling.

By configuring as above, the horizontal roll 2
The rolling radial force acting on 1a, 21b is supported by bearings 29a, 29b via the hollow shaft 22a, roll shaft 24, and bearings 28a, 28b, and the rolling reaction force acting in the direction in which the horizontal rolls 21a, 21b approach each other is , a hollow shaft 22a, a roll width adjustment screw 26a, a spherical seat 27a, and a roll shaft 24. In addition, the horizontal rolls 21a and 21b remain correctly set in the axial direction even in the non-rolling state due to the action of the gap adjustment devices 32 and 32', so that the leading edge of the material is not caught in the same way as in a normal integral roll. In good condition as usual.

The roll width adjustment amount W, that is, the roll width B, is detected by detecting the relative distance in the axial direction between the hollow shaft 22a and the roll width adjustment screw 26a. For example, by measuring the value of C in FIG.
You can know W. Alternatively, a part (for example, a chock 29a) representing the axial position of the hollow shaft 22a
The roll width adjustment amount W, that is, the roll width B may be detected by detecting the relative axial position of the roll width adjustment screw 26a (for example, L in FIG. 1). Further, although not shown, if a detector for detecting these values (such as C or L in FIG. 1) is installed, the roll width adjustment work will be easier.

FIG. 3 shows the second embodiment, and each symbol is as shown in FIG.
Shown with the same symbols as in Figure 2. In FIG. 3, 41a
42a is a shaft integral with the roll shaft 24, 42a is in contact with the roll width adjustment screw 26a, and 26a is in contact with the rotation of the roll width adjustment screw 26a around the roll axis.
43a is a nut screwed onto the shaft 41a, and 44a is a spring installed so that forces act on the disk 42a and the nut 43a in opposite directions in the roll axis direction. With this configuration, the roll shaft 24, the spherical seat 27a, and the roll width adjustment screw 26a are set without any gaps in the axial direction. The roll width adjustment is performed in the same manner as in the previous example by rotating the roll width adjustment screw 26a relative to the hollow shaft 22a. That is, in this embodiment, the gap adjusting devices 32, 3 in FIG.
41a, 42a, 43a, 44a instead of 2'
This is an example in which a gap adjustment device consisting of the following is provided. In this embodiment, the structure shown in FIG. 4 may be used without providing the spring 44a (third embodiment), but the method shown in FIG. 3 is more desirable in terms of eliminating backlash.

FIG. 5 shows a fourth embodiment, in which 45a is a hydraulic cylinder incorporated in the shaft 41a, and the other parts are shown with the same symbols as in FIG. 3. With this configuration, the roll width can be adjusted in the same manner as shown in FIG. Further, in the case of this embodiment, when rotating the roll width adjustment screw 26 to adjust the roll width, the oil pressure of the hydraulic cylinder 45a is lowered, and the screw 26 is rotated to adjust the roll width.
By lowering the contact pressure between the roller 6a and the disk 42a, the rotational force of the roll width adjusting screw 26a can be easily reduced.

FIG. 6 shows a fifth embodiment, in which a screw is carved into the outer cylinder of the hydraulic cylinder, and a nut 46 that engages with the screw is carved into the outer cylinder of the hydraulic cylinder.
a, and after adjusting the roll width in the same manner as in the previous embodiment, the screw 26 is opened with a hydraulic cylinder 45a.
a. After applying prestress between the spherical seat 27a and the roll shaft 24, turning the nut 46a and tightening it to the roll width adjustment screw 26a, the hydraulic cylinder pressure is released to complete the roll width adjustment. .

Now, in the above-described embodiment, the roll width adjustment screw 26a may be adjusted manually, but as shown in FIG.
In this case, a roll width detection device may also be provided (sixth embodiment). That is, in Figure 7, 5
0a is a roll width adjustment motor, 55a is a member attached to the motor shaft, 51a is a clutch, 52a
53a is a roll width detection device, and when adjusting the roll width, the clutch 51a is turned on to transmit the rotation of the motor 50a to the screw 26a, and the roll width is detected. The target roll width is set by comparing it with the detection value of the device 53a, and after the setting is completed, the clutch 51a is turned off and the motor 5 is turned off.
0a and the roll width adjustment screw 26a. In addition, in Fig. 7, 5
4a is a cover attached to the bearing box 29a.

Further, FIG. 8 shows a seventh embodiment, and the symbols are the same as those in FIG. 7. In this embodiment, when adjusting the roll width, after turning on the clutch 51a and restraining the rotation of the roll width adjustment screw 26a, the roll shaft 24 is operated by the main drive device of the roll (not shown) instead of the motor 50a. , the hollow shaft 22a is rotated, and the width is set using the output of the roll width detection device 53a. After setting the width, the clutch 51a
is set to OFF. Here, clutch 5
1a and the detection device 53a may be of any type.

Now, in the embodiment shown in FIG. 2, after rolling with the roll width B, if the roll width is set to be larger by W so that B'=B+W, the roll 21
a is a hollow shaft 22a, a bearing 28a, a bearing box 29a,
Since the roll axial movement is restrained by the housings 31a, 31a' through the keeper plates 30a, 30a', the horizontal roll 21a does not move, and the horizontal roll 21b moves by W to the right in the figure. . Therefore, in a rolling line arranged to roll at a constant pass line center, this setting method will shift the roll center to the right by 1/2W, so the entire horizontal roll will be shifted to the right by 1/2W. You need to move it to the left and align it with the center of the line. As this line center alignment device, the entire rolling stand may be configured to be movable in the roll axis direction, and the line alignment may be performed by moving only 1/2W, but since the equipment will be large-scale, the horizontal rolls 21a, 21b A so-called roll axial direction adjusting device is provided which integrally moves and sets the horizontal roll 21 consisting of Horizontal roll to the left 1/
It is preferable to configure it so that it moves by 2W to match the line center. Further, the roll axial direction adjusting device may be any roll axial direction adjusting device including a conventionally well-known method such as a screw method, a rotor method, an eccentric shaft method, a hydraulic cylinder method, a lever method, and the like.

FIG. 9 shows an eighth embodiment, in which 28a is a cylindrical roller bearing, 60a is a thrust bearing, and collars 69a, 6
1a, 62a, nut 63a, hollow bolt 64
a. It is attached to the hollow shaft 22a of the horizontal roll 21a by a half-split thrust collar 65a.
On the other hand, the thrust bearing 60a is
Further, a gear 70a and a screw 71a are carved on the outer periphery of the thrust bearing box 66a, and the gear is supported by a pinion 68 which is pivotally supported by a casing 67a attached to the bearing box 29a.
It meshes with a. On the other hand, the screw 71a carved on the outer periphery of the thrust bearing box is connected to the casing 67a.
The screws engraved on the inner circumference are engaged. Other symbols are the same as those described above.
With this configuration, the pinion 68a
When rotated, the thrust bearing box 66a rotates,
Due to the screw connection with the casing 67a, the thrust bearing box 66a moves forward and backward in the roll axis direction with respect to the casing 67a. On the other hand, hollow shaft 2
2a is fixed to the thrust bearing box 66a via the thrust bearing 60a, so the hollow shaft 22
a, that is, the horizontal roll 21 moves in the axial direction integrally with the thrust bearing box 66a. In this manner, the roll width is adjusted by the method described above, and by moving and adjusting the horizontal roll 21 by 1/2 of the roll width adjustment amount using the device, the roll width is set to the target value, and , the roll position can be aligned with the line center.

FIG. 10 shows a ninth embodiment, in which the horizontal roll 21
The same structure as the horizontal roll 21a is also applied to the roll b. That is, the horizontal roll 21
b is fitted onto a hollow shaft 22b which is fitted onto the roll shaft 24 so as to be movable in the axial direction, and is integrally formed with the hollow shaft 22b. The hollow shaft 22b is configured to be non-rotatable relative to the roll shaft 24 by the rotational force transmission element 23b. Further, a screw 25b is cut into the inner periphery of the hollow shaft 22b, and a roll width adjustment screw 26b is screwed into the screw 25b. 27b is a spherical seat and acts as a self-aligning spacer that equalizes the load distribution between the roll width adjusting screw 26b and the roll shaft 24. For other symbols, please refer to the second
It is similar to the figure. With this configuration, the roll width adjusting screw 26a,
Alternatively, the roll width can be adjusted by lowering the roll width adjustment screw 26b.
In this embodiment, since the roll width adjustment is performed by the roll width adjustment screws 26a and 26b, the amount of roll width adjustment can be made larger than in the case of FIG. 1 in which adjustment is made only by the roll width adjustment screw 26a. There is a characteristic that. It goes without saying that the same mechanism as shown in the second to eighth embodiments of the first embodiment is also applied to the ninth embodiment (tenth to sixteenth embodiments). example).

(Effects of the invention) As explained in detail based on the embodiments above,
It is possible to detect the roll width from the roll end side, and it is possible to correctly adjust the roll width to any desired roll width online without using replacement parts.Moreover, it is possible to adjust the roll width to any target roll width without using replacement parts.Moreover, it is possible to adjust the roll width into two parts due to rolling reaction force, that is, the roll width. Since the deformation path of the constituent members involved in the displacement of the roll is short, the roll width displacement is small (so-called high roll width rigidity), which makes it possible to roll or form products with high dimensional accuracy, and the roll width change time can be significantly reduced. The effects are great, such as shortening, reducing the number of replacement parts or rolls of various roll widths, and making it possible to construct a product with any width dimension.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a first embodiment of the present invention, FIG. 2 is a plan sectional view of FIG. 1, FIG. 3 is a sectional view showing a second embodiment, and FIG. 4 is a third sectional view. 5 is a sectional view showing the fourth embodiment, FIG. 6 is a sectional view showing the fifth embodiment, FIG. 7 is a sectional view showing the sixth embodiment, Fig. 8 is a sectional view showing the seventh embodiment, Fig. 9 is a sectional view showing the eighth embodiment, Fig. 10 is a plan sectional view showing the ninth embodiment, and Fig. 11 is a sectional view showing the conventional method. An explanatory diagram, FIG. 12 is an explanatory diagram of another conventional method, and FIGS. 13a and 13b are comparison diagrams of roll width rigidity between the conventional method and the present invention. 1: Rolled material, 2a, 2b: Roll divided into two in the axial direction (horizontal roll), 12a, 12b: Same as above, 20a, 20b: Same as above, 21a, 21b: Same as above, 3: Spacer, 4: Fastening bolt, 13 : Roll shaft, 24: Roll shaft, 17a, 17b: Thrust ring, 20, 21: Roll, 22a, 22
b: Hollow shaft, 23a, 23b: Slip key, 25
a, 25b: Screw, 26a, 26b: Roll width adjustment screw, 27a, 27b: Spherical seat, 28
a, 28b: Bearing, 29a, 29b: Bearing box, 3
0a, 30a': Keeper plate, 31a, 31
a', 31b, 31b': Housing, 32, 3
2': Interval adjustment device, 41a: shaft, 42a: disc,
43a: Nut, 44a: Spring, 45a: Hydraulic cylinder, 46a: Nut, 50a: Motor, 51
a: clutch, 52a: member integral with 26a,
53a: roll width detection device, 54a: cover, 6
0a: Thrust bearing, 61a: Collar, 62a:
Color, 69a: Color, 63a: Natsuto, 64
a: Hollow bolt, 65a: Thrust collar, 66
a: Thrust bearing box, 67a: Casing, 68
a: pinion, 70a: gear, 71a: screw, 7
2: Shaft fixed roll (roll 216 on roll shaft 24
), 73 : Hollow shaft roll (composed of hollow shaft 22 and roll 21).

Claims (1)

[Claims] 1. A shaft-fixed roll 72 fixed to the roll shaft 24, and a hollow shaft 22 fitted with the roll shaft so as to be movable in the axial direction and connected in the rotational direction with a sliding key. A hollow shaft roll 73 is provided, the hollow shaft is rotatably and fixed in the axial direction on the bearing 28a, and a screw 25 is provided on the inner periphery of the bearing side end of the hollow shaft.
and a roll width adjustment screw screwed into the screw, the tip of the roll width adjustment screw being pressable against the end face of the roll shaft 24, and a bearing box 29a that holds the bearing 28a on the hollow shaft roll side connected to the bearing box 29a. The roll shaft 24 is fixed to the housing 31a in the roll axis direction, the roll shaft 24 is rotatably fixed to the bearing 28b on the fixed roll side, and the bearing box 29b holding the bearing is fixed to the bearing housing 3.
A roll width adjusting device characterized in that it is provided on 1b so as to be movable in the roll axis direction. 2 Fit the roll shaft 24 so that it can move freely in the axial direction,
Two hollow shaft rolls 73 each having a hollow shaft 22 connected in the rotating direction with a sliding key are provided, and the hollow shaft is provided rotatably and fixed in the axial direction to a bearing 28,
A screw 25 is provided on the inner periphery of the bearing side end of the hollow shaft,
A roll width adjustment screw is provided to be screwed into the screw, and the tip of the roll width adjustment screw is provided so as to be able to press against the end face of the roll shaft 24, and a bearing box 29a holding one bearing 28a is fixed to the bearing housing 31a in the axial direction. The other bearing 28b is provided rotatably and fixed in the axial direction on the roll shaft 24, and a bearing box 29b for holding the bearing is provided on the roll bearing housing 31b so as to be movable in the roll bearing direction. A roll width adjustment device featuring: