JPS62156007A - Rool width adjusting device - Google Patents

Abstract

PURPOSE:To permit online adjusting and setting of a roll width and rolling or molding with the good dimensional accuracy of a product by moving the other fitted onto the one roll shaft of bisected horizontal rolls in the axial direction of the roll by means of a screw fitted thereto. CONSTITUTION:The rolls 21a, 21b bisected in the axial direction are respectively formed on the outside circumferences of a hollow shaft 22a and roll shaft 24. The shaft 22a is axially movably fitted onto the shaft 24 and the relative rotation thereof is prohibited by a key 23a. The roll width adjusting screw 26a is screwed to the thread inscribed on the inside circumference of the shaft 22a near the shaft end thereof and the roll 21b is successively provided to gap adjusting devices 32, 32'. The devices 32, 32' are moved rightward by W or above and thereafter the screw 26a is rotated and pressed down in the direction of the shaft 24 by W in the case of increasing the screw width by W. The devices 32, 32' are then moved leftward to set the axial spacings between the screw 26a, a spherical seat 27a and the shaft 24 so as to attain set values or below. The shaft 22a i.e., the roll 21a is thereby set apart by W from the shaft 24, i.e., the roll 21b. Since the transverse rigidity of the roll is high, the product having the good dimensional accuracy is obtd.

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-beam steel, it is necessary to change the width of the horizontal rolls of a universal mill, mill, or long mill in order to roll H-beam steel of different dimensions. H to roll
Rolls corresponding to the dimensions of the steel sections were prepared, rearranged, and rolled. However, this method has the disadvantage that a large number of rolls are prepared, and it takes a long time to reassemble each rolling size. For example, there is a device as shown in FIG. 10, as shown in Utility Model Application Publication No. 51-20034. In this process, one roll is divided into two parts in the width direction, and an H-beam steel 1 with the required inner web width dimension B is used.
When rolling, a spacer 3 of a predetermined size is interposed between the two divided rolls 2a and 2b. It is made to be integrated with the roll by the sheet 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 number of types of spacers must be prepared. Also,
In order 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 reshuffling the rolls between. However, there is a drawback that offline reclassification is required.

As a solution to these drawbacks, for example, Japanese Patent Application Laid-Open No. 1983
The apparatus of FIG. 12 shown in Japanese Patent No. 72603 has been proposed for use with horizontal rolls for H-shape rolling. 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,
To adjust the roll width, it is necessary to pull the roll offline and directly measure the roll width. Further, the roll width can be adjusted by screws carved on the outer periphery of the hollow rolls 12a and 12b, and a thrust ring 17a that is rotatable relative to the roll shaft 13 passing through the hollow rolls.

This is done by adjusting the relative rotation between the thrust ring and the hollow roll by engaging the screws carved in 17b, so that the support path for the rolling reaction force applied to the end face of the roll due to rolling of the rolled material 1 is long, and therefore, Since the dimensional variation between the ends of the roll body is large, there is a drawback that the dimensional accuracy of the web inner width of the rolled product is poor.

Means for Solving Problem C) In order to solve this problem, the present invention (1) divides the roll into two in the width direction, and installs a roll shaft on the end face side of the divided part of one of the two divided rolls. The other split roll is formed into a hollow shape and fitted onto the extended roll shaft so as to be movable in the axial direction, and a horizontal roll is attached to the outer periphery of one roll and the other hollow roll, respectively. In addition to forming
A threaded portion is formed inside the hollow roll, a roll width adjustment screw is movably screwed into the threaded portion, and the axial pushing force applied to the one roll and the extended roll shaft is applied to the roll width adjustment screw. The roll is configured to be supported, and the one roll is connected to a gap adjustment device so that the gap between the two divided rolls can be adjusted to an arbitrary value, that is, the width of the horizontal roll can be adjusted arbitrarily.

(2) A roll divided into two in the width direction is formed into a hollow shape, each of the divided hollow rolls is fitted around a common roll shaft so as to be movable in the axial direction, and a horizontal roll is attached to the outer periphery of each hollow roll. At the same time, a threaded portion is formed inside the hollow roll, a roll width adjustment screw is movably screwed into the threaded portion, and the axial pressing force applied between the hollow roll and the roll axis is supported by the roll width adjustment screw. In addition, the hollow roll is connected to a gap adjustment device, and the gap between the two divided rolls can be adjusted to an arbitrary value, that is, the width of the horizontal roll can be adjusted arbitrarily. , which solves the above-mentioned problems existing in the prior art.

(Function) By configuring the roll width adjustment device as described above, it is possible to detect the roll width wI4 from the end of the roll, and it is possible to accurately adjust the roll width to the target roll width adjustment amount online. Since the axially deformed portion of the component member that is involved in the axial displacement of the horizontal roll interval due to the reaction force is short, the rigidity is high, and therefore it is possible to roll or form the product with high dimensional accuracy.

(Examples) Hereinafter, the present invention will be described in detail based on examples thereof.

FIG. 1 is a diagram showing an embodiment of the present invention, in which numeral 1 indicates a rolled material, including an upper horizontal roll 20 consisting of horizontal rolls 2Qa and 20b, a lower horizontal roll consisting of horizontal rolls 21a and 21b, and left and right vertical rolls. 8 and 9.

Hereinafter, the present invention will be described in detail regarding the lower horizontal roll 21, but the same applies to the lower horizontal roll 20. The lower horizontal roll 21 is a horizontal roll 21 divided into two in the width direction.
a and 21b, one horizontal roll 21a is hollow @
It is formed on the outer periphery of 22a. Other horizontal roll 2
1bfl is formed on the outer periphery of the roll shaft 24. The hollow shaft 22a is fitted onto the roll shaft 24 so as to be movable in the axial direction, and is configured to be relatively unrotatable by the rotational force transmission element 23a. That is, the roll shaft 24 extends in the hollow portion of the hollow shaft 22a so as to be movable relative to the hollow shaft 22a only in the axial direction by the rotational force transmission element 23a. A threaded portion 25a is formed on the inner periphery near the shaft end of the hollow shaft 22m, and a roll ulcer adjustment screw 26a is screwed into this.

27ald spherical seat, roll 1 adjustment screw 26a
It acts as a self-aligning type spacer that equalizes the load distribution between the roller shaft 24 and the roll shaft 24. 29a, 29b! The lower horizontal roll 21 is rotatably supported in the ri bearing box via bearings 28m and 28b. The bearing box 29a includes keeper plates 30m, 301 and a housing 31a,
3 ] It is held immovably in the roll axis direction by a'. On the other hand, it is supported in the roll axis direction by gap adjustment devices 32 and 32' attached to the bearing box 29bl''i and the housings 31b and 3lb'.

With this configuration, the horizontal rolls 21a, 2
1b, 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, the gap adjustment devices 32 and 32' are actuated in the axial direction by at least W in a direction in which the bearing box 29b moves away from the bearing box 29a. Next, the roll width adjusting screw 26 is rotated to lower the roll width by W in the direction of the roll shaft 24.

Next, the gap adjusting devices 32 and 32' are operated in a direction in which the bearing box 29b moves toward the bearing box 29m, so that the axial gap between the roll width adjusting screen 26a, the spherical seat 27a, and the roll shaft 24 is adjusted to an allowable value. Set it as follows.

The gap adjustment device 32, 32' may be any mechanism such as a bolt or wedge, but as shown in FIG.
6a.

It is desirable that the axial clearance between 27a and 24 be zero and that a preload be applied.

By operating in this way, the roll width adjusting screw 26a and the gap adjusting device 32°32'
The hollow shaft 22a, that is, the horizontal roll 211L is set to open in the axial direction in a direction opposite to the roll axis 24, that is, the horizontal roll 21b by W, thereby providing a horizontal roll whose roll width is 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 adjustment device, it is sufficient to simply adjust the roll width adjustment screw 26a by lowering the roll width adjustment screw 26a without specially operating the gap adjustment 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.

Moreover, the horizontal roll 21a and the hollow shaft 22a may be integrated, and the horizontal roll 21b and the roll shaft 24 may also be integrated. Further, instead of the rotational force transmission element 23aKH key, the roll shaft 24 and the hollow shaft 22a (or the horizontal roll 21a) may be engaged by spline. Also, for the reasons mentioned above,
Although it is preferable to provide a spherical seat 27a as shown in FIG.
The configuration may be such that the roll width adjusting screw 26m is in direct contact with the roll shaft 24 without providing this.

Also, although not shown in the figure, there is a roll adjustment screen during rolling.
! It is preferable to provide a stopper to prevent the shaft 26a from rotating relative to the hollow shaft 22a.

By configuring as above, the horizontal rolls 21a, 2
The rolling radial force acting on the hollow shaft 22a, o-
bearings 29a and 2 through the shaft 24 and bearings 28a and 28b.
The rolling reaction force acting in the direction in which the horizontal rolls 21a and 21b approach each other is supported via the hollow shaft 22110, the width adjustment screw 26a, the spherical seat 27&, and the roll shaft 24. In addition, the horizontal rolls 21a and 21bld remain correctly set in the axial direction even in the non-rolling state due to the action of the gap adjustment device 32, 32', so that the tip of the material is not caught in the same way as in the case of a normal integral roll. In good condition.

The roll width adjustment amount W, that is, the roll width B is
a and the relative distance in the axial direction between the roll width adjusting screw 26&. For example, the roll width B can be determined by measuring the value of C in FIG. Alternatively, the roll width adjustment amount W, that is, the roll width adjustment amount W, can be adjusted by detecting the relative axial position of the roll width adjustment screw 26a (for example, L in FIG. The width B may also be detected.

Further, although not shown, if a detector for detecting these values (such as C2 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 the same as in FIG. 1.

Shown with the same symbols as in Figure 2. In FIG. 3, 41a is a shaft integral with the roll shaft 24, 421 is a disc that is in contact with the roll width adjustment screw 26a and is slidable on 26a with respect to the rotation of the roll width adjustment screw 26& around the roll axis;
44a is a nut that is fitted onto the shaft 41a, and 44a is a spring that is installed so that forces act on the disc 42a and the nib 43a in directions opposite to each other in the roll axis direction. With this configuration, the roll shaft 24, the spherical seat 27110, the width adjustment screw -26& are set without any gaps in the axial direction. Roll width adjustment is performed using roll width adjustment step 17. -26m relative to the hollow shaft 22& is carried out in the same way as in the previous example. That is, in this embodiment, instead of the gap adjustment devices [32, 32' shown in FIG. 2, 41m, 42a, 43
This is an example in which a gap adjustment device consisting of a, 44& is provided. Although this embodiment may be configured as shown in FIG. 4 without providing the spring 44 (third embodiment), the method shown in FIG. 3 is more desirable in terms of eliminating backlash. .

FIG. 5 shows a fourth embodiment, with 45 m indicating a hydraulic cylinder built into the shaft 411, and the other parts shown using the same symbols as in FIG. 3. With this configuration, the roll width can be adjusted in the same manner as shown in FIG.

In addition, in the case of this embodiment, when rotating the roll width adjustment screw 26 to adjust the roll width, the hydraulic cylinder 45 m
By lowering the oil pressure of the roll width adjusting screw 2 and lowering the contact pressure between the screw 26m and the disc 42a,
The rotational force of 6 m can be easily reduced.

FIG. 6 shows a fifth embodiment, in which a screw is carved into the outer cylinder of the hydraulic cylinder, a nut 46a is provided to engage with the screw, and after adjusting the roll width in the same manner as in the previous embodiment, the hydraulic cylinder 45 & Screw 26a.

Applying prestress between the spherical seat 27a10 and the shaft 24,
Turn the nut 46a and screw the roll width adjustment screw 26m.
After tightening, the hydraulic cylinder pressure is released to complete the roll width adjustment.

Now, in the embodiment described above, the reduction of the roll width adjusting screw 26m may be adjusted manually, but as shown in FIG. 7, the adjustment may be driven by a motor via a clutch device. A roll width detection device may also be provided (sixth embodiment). That is, the seventh
In the figure, 5011 is a roll width adjustment motor, 55 &
5 is a member attached to the motor shaft, 51a is a clutch, and 5
2a is a member configured integrally with the roll width adjustment screw, 53& is a roll width detection device, and when adjusting the roll width, the clutch 511 is turned ON to transmit the rotation of the motor 5Qa to the screw 26&, and the roll width detection device 53& is
The target roll width is set by comparing it with the detected value of , and after the setting is completed, the clutch 51a is turned off and the connection between the motor 5Qa and the roll width adjustment screw 26a is cut. In addition, in Fig. 7, 5
4a is a cover attached to the bearing box 29.

Further, FIG. 8 shows a seventh embodiment, and the symbols are the same as those in FIG. 7. In this example, when adjusting the roll width,
After turning on the switch 51a and restraining the rotation of the roll width adjustment screw 26, the roll shaft 24, and thus the hollow shaft 22a, is rotated by the roll main drive device (not shown) instead of the motor 5Qa, and the roll width detection device 53m is rotated.
The width is set using the output of the clutch 51a, and after the width is set, the clutch 51a is turned off. Here, the clutch 51a and the detecting device 53a may each be of a type that is inert. In the embodiment shown in FIG. 2, after the rolling of the roll mBT is completed, the roll width is determined as B'==B When the width is increased by W so that it becomes +W, the roll 21a becomes the hollow shaft 2.
2L, @ bearing 28a1 bearing box 29a1 key/mother plate 30a, 30a' housing 31m, 3
Since the movement in the roll axis direction is restrained by 1a', 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 line center, this setting method will shift the roll center to the right by LW, so the entire horizontal roll will be moved to the left by +W. It is necessary to align it with the line center. This line center alignment device is constructed so that the entire rolling stand can be moved in the roll axis direction.
Although line alignment may be performed by moving by W, the equipment would be large-scale, so a so-called roll axial direction adjustment device that moves and sets the horizontal roll 21 consisting of the horizontal rolls 21a and 21b integrally in the roll axial direction is used. The roll width is adjusted using the method described above, and the horizontal roll is moved to the left in FIG. 2 using the roll axis adjustment device. It is preferable to configure it so that it moves by -W to match the line center. Also,
The roll axial direction adjusting device may be any roll axial direction adjusting device, including conventionally well-known methods such as a screw type, a one-way type with a screwdriver, an eccentric shaft type, a hydraulic cylinder type, a one-way lever type, and the like.

FIG. 9 shows an eighth embodiment, in which 28a is a cylindrical roller bearing, 60
a is a thrust bearing, collar 69a.

61m, 62a, nut 63a1 Hollow Del Toro 4a1 Half thrust collar 651, horizontal roll 21!1
This is because it is attached to the hollow shaft 22&. On the other hand, the thrust bearing 60a is supported by a thrust bearing box 661, and a gear 70a and a screw 71a are carved on the outer periphery of the thrust bearing box 66a.
The pinion 68a is engaged with a pinion 68a which is supported by a casing 67aK which is attached to the casing 67aK. On the other hand, the screws 71 & carved on the outer periphery of the thrust bearing box are engaged with the screws carved on the inner periphery of the casing 67a. Other symbols
The symbols are the same as those described above. By configuring it like this, pinion 68! When L is rotated, the thrust bearing box 66a rotates, and due to the screw connection with the casing 67a, the thrust bearing box 66 is rotated with respect to the casing 67&.
a moves forward and backward in the roll axis direction. On the other hand, since the hollow shaft 22a is fixed to the thrust bearing box 66a via the thrust bearing 60a, the hollow shaft 22a1, that is, the horizontal roll 21, moves in the axial direction integrally with the thrust bearing box 66a. In this manner, the roll @ is adjusted by the method described above, and by moving and adjusting the horizontal roll 21 by T of the roll width adjustment using the device, the roll width is set to the target value, and the roll is adjusted to the line center. can be aligned.

FIG. 10 shows a ninth embodiment, in which the same structure as the horizontal roll 21& is applied to the horizontal roll 21b. That is, the horizontal roll 21b is fitted onto a hollow shaft 22b that 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 carved on the inner periphery of the hollow shaft 22b, and the screw 25b and the VC roll width adjustment screw U and -26b are screwed together. 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. Other symbols are the same as in FIG. 2. With this configuration, the roll width adjusting screw 26 can be adjusted in exactly the same way as explained in the embodiments of FIGS. 1 and 2.
a, or lower the roll width adjustment screw 26b by 1
The roll width is adjusted by moving the roll to the fourth position.

In this embodiment, since the roll width adjustment is performed using the roll width adjustment screws 26 & 26b, the amount of roll width adjustment can be made larger than in the case of FIG. There is a characteristic that In addition, it goes without saying that the same one-morning structure shown in the second to eighth embodiments for the first embodiment is also applied to the ninth embodiment (the tenth to tenth embodiments). 16th implementation f!+).

(Effects of the Invention) As described above in detail based on the embodiments, the roll width can be detected from the roll end side, and the roll width can be correctly adjusted to any target roll width online without using replacement parts. In addition, the roll width displacement is small because the deformation path of the component that is involved in the two-part roll interval, that is, the roll width displacement due to rolling reaction force, is narrow.
(So-called high roll width rigidity) Therefore, it is possible to roll or form products with high dimensional accuracy, greatly shortening the time for changing roll widths, reducing the number of replacement parts or rolls with various roll widths, and making it possible to roll or form products with high dimensional accuracy. The effects are great, such as making it possible to manufacture products.

[Brief explanation of drawings]

FIG. 1 is a front sectional view showing the first embodiment of the present invention, and FIG.
The figure is a cross-sectional plan view of Figure 81!3, Figure @3 is a cross-sectional view showing the second embodiment, Figure 4 is a cross-sectional view showing the third embodiment, and Figure 5 is a cross-sectional view showing the second embodiment.
The figure 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, and Fig. 8 is a sectional view showing the seventh embodiment. FIG. 9 is a sectional view showing an example of the first embodiment, FIG. 10 is a plan sectional view showing the ninth embodiment, FIG. 11 is an explanatory diagram of the conventional method, and FIG. 12 is a separate diagram. FIG. 2 is an explanatory diagram of a conventional method. 1: Rolled material 2a, 2b: Rolls 12m, 12 divided into two in the axial direction
b: Same as above 20a, 20b: Same as above 21a, 21b: Same as above 3 Ni spacer-4: Fastening gel] 3: Roll shaft 24: Roll shaft 17a, 17b
Nissura Ring 20.21: Cff-Rule 22 a e 22 b
:Hollow shaft 23a, 23b: Key 25m, 25b:
Screws 26a, 26b: roll width adjustment screw 27a,
27b: Spherical seat 28m, 28b: Bearing 29a, 29
b: Bearing box 30a, 30m': Keeper plate 31a, 3] a', 31b, 3
] b': H'y shy r32.32': Output device 41a: Shaft 42a: Disc 43a: Nut 44a: Spring 45a: Hydraulic cylinder 46
&: Nut 50a: Motor 51a: Clutch 52a: Member 53a integrated with 26a, Roll width detection device 54a, Cover 60a, Ni-thrust bearing 61a
: Collar 62a: Collar 69a: Collar 63a: Nut 64 a: Medium weight M bolt 651 Ni thrust force collar 66a Ni thrust bearing box 67a Two casings 68
凰: pinion 70a: gear 71 breath: screw. -21,2I

Claims (2)

[Claims] (1) Split the roll into two in the width direction, extend a roll shaft to the end face side of the split part of one of the two rolls, and form the other split roll into a hollow shape on the extended roll shaft. horizontal rolls are formed on the outer peripheries of one roll and the other hollow roll, respectively, and a threaded portion is carved on the inside of the hollow roll, and the threaded portion A roll width adjustment screw is movably screwed into the part so that the roll width adjustment screw can support the axial pushing force applied to the roll shaft extending from the one roll, and the one roll is set in the gap. A roll width adjustment device, which is connected to an adjustment device and is capable of adjusting the width of a horizontal roll. (2) A roll divided into two in the width direction is formed into a hollow shape, each of the divided hollow rolls is fitted around a common roll shaft so as to be movable in the axial direction, and a horizontal roll is attached to the outer periphery of each hollow roll. At the same time, a threaded portion is carved on the inside of the hollow roll, and a roll width adjustment screw is movably screwed into the threaded portion, and the axial pressing force applied between the hollow roll and the roll axis is controlled by the roll width adjustment screw. A roll width adjusting device characterized in that the hollow roll is connected to a gap adjusting device so that the width of the horizontal roll can be adjusted.