JPH0631318A - Roll cross rolling mill - Google Patents

Abstract

PURPOSE:To cross a pair of upper and lower work rolls in the horizontal direction, to simplify an equipment and to facilitate the maintenance control by driving one push bar to rotate a pinion and equipping a push bar driving means for moving the other push bar in the reverse direction. CONSTITUTION:An upper push bar 15 forming an upper rack part 14, a lower push bar 17 forming a lower rack park 16 and a pinion 18 which is interposed between these push bars, engages with the upper rack part 14 and the lower rack part 16 and rotates freely are provided. The upper push bar 15 is moved by a hydraulic cylinder 25 to the direction parallel to a pass line and the lower push bar 17 is moved synchronously to the reverse direction through the pinion 18 to cross the upper work roll 2 and the lower work roll 3. Consequently, the equipment is simplified, cost reduced and maintenance control of the equipment can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll cross rolling machine in which a pair of upper and lower work rolls are crossed to change the clearance distribution between the work rolls.

[0002]

2. Description of the Related Art In the steel industry, various technological improvements in the manufacturing process are currently being studied, and production technology and maintenance have been greatly developed. Among them, the rolling mill has a great influence on the quality of the final product, and thus has undergone considerable technical improvement. In particular, in order to improve the thickness accuracy of the rolled material in the plate width direction, a roll cross rolling machine is started to be used in which a pair of upper and lower work rolls are crossed to change the clearance distribution between the work rolls.

FIG. 3 showing the right side surface of the partially broken main part in this example of the conventional roll cloth rolling mill and its IV-
As shown in FIG. 4 showing the IV line arrow, the housing 31
The upper work roll 32 and the lower work roll 33 are provided above and below the pass line of the rolled material 101 that passes through the center of the housing, and the housings are provided at both ends of the upper work roll 32 and the lower work roll 33. Upper work roll chock 34 and lower work roll chock 3 provided at 31
5 and 5 are rotatably supported respectively. An upper backup roll 36 and a lower backup roll 37 are provided on the upper part of the upper work roll 32 and the lower part of the lower work roll 33, respectively, and at both ends of the upper backup roll 36 and the lower backup roll 37, It is rotatably supported by an upper backup roll chock 38 and a lower backup roll chock (not shown) provided in the housing 31. Then, the upper backup roll 36 and the lower backup roll 3
7 is adapted to press the upper work roll 32 and the lower work roll 33, respectively, and rotate in synchronization with each other.

The upper cylinder head 40 is in pressure contact with the front and rear surfaces of the upper work roll chock 34, and the lower cylinder head 41 is in pressure contact with the front and rear surfaces of the lower work roll chock 35. . The upper cylinder head 40 and the lower cylinder head 41 are movable in the front-rear direction in order to rotate the corresponding upper work roll chock 34 and lower work roll chock 35 in the horizontal direction. An upper roll bending cylinder 42 is provided between the upper cylinder head 40 on the front and rear sides and the protrusions on the front and rear sides of the upper work roll chock 34.
A lower roll bending cylinder 43 is provided between 1 and the front and rear projections of the lower work roll chock 35. The upper roll bending cylinder 42 and the lower roll bending cylinder 43 raise and lower the corresponding upper work roll chock 34 and lower work roll chock 35 in the vertical direction, respectively.
The deflection between the second work roll 33 and the lower work roll 33 is corrected.

On the other hand, an upper moving shaft 44 is connected to the upper cylinder head 40 on both front and rear sides, and a lower moving shaft 45 is connected to the lower cylinder head 41 on both front and rear sides. The upper moving shafts 44 on both the front and rear sides are respectively installed on the upper and lower front and rear sides of the housing 31 via the upper screw jack unit 46, the upper rotating shaft 47, and the upper bevel gear box 48 which are installed outside the side columns of the housing 31. The upper motors 49 are connected to each other, and by driving these upper motors 49,
The upper moving shaft 44 is movable in the front-rear direction. The lower moving shafts 45 on both the front and rear sides of the lower screw jack unit 50 installed outside the side columns of the housing 31.
And lower rotary shafts 51 and lower bevel gear boxes 52 provided on the left side of the upper bevel gear box 48 are connected to lower motors 53 installed on the left side of the front and rear upper motors 49, respectively. The lower moving shaft 45 can be moved in the front-rear direction by driving the motor 53.

Therefore, when the rolled material 101 is rolled by crossing a pair of upper and lower work rolls, the upper motor 49 is driven and the upper bevel gear box 48, the upper rotary shaft 47 and the upper screw jack unit 46 are used. , The upper moving shaft 44 is moved rearward to move the upper cylinder head 40 rearward. In synchronization with this, the lower motor 53 is driven to move the lower moving shaft 45 forward through the lower bevel gear box 52, the lower rotating shaft 51, and the lower screw jack unit 50 to move the lower cylinder head 41 to the front side. Move to. As a result, the upper work roll chock 34 and the lower work roll chock 3
Since 5 and 5 are rotated in opposite directions in the horizontal direction, the upper work roll 32 and the lower work roll 33 cross each other in the horizontal direction. The rolled material 101 is fed between the upper work roll 32 and the lower work roll 33 to be rolled.

[0007]

As shown in FIG. 3, on the outer circumference of the housing 31 of the conventional roll cloth rolling mill,
Upper motor 49, lower motor 53, upper bevel gear box 48, lower bevel gear box 52, upper screw jack unit 46, lower screw jack unit 50, etc., upper work roll 32
A device for crossing the lower work roll 33 with the lower work roll 33 is provided for each of the upper and lower parts. Therefore, the rolling mill has an extremely large number of parts, which increases the cost of the rolling mill.
There is a problem that maintenance management of the rolling mill becomes complicated.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a roll cloth rolling machine for crossing a pair of upper and lower work rolls to change the clearance distribution between these work rolls, and an apparatus for roll cross for crossing an upper work roll and a lower work roll. It is an object of the present invention to provide a roll-cross rolling mill capable of reducing the cost of the rolling mill and facilitating maintenance management of the rolling mill by simplifying the rolling mill.

[0009]

The roll cross rolling machine according to the first aspect of the present invention is configured such that work roll chocks for supporting both ends of a pair of upper and lower work rolls are rotated in opposite directions along a pass line. In a roll cross rolling machine that changes the clearance distribution between the work rolls by crossing the pair of work rolls, a top and bottom that is movably provided in a direction parallel to the pass line and that biases the work roll chocks, respectively. A pair of push rods, a pair of upper and lower rack portions respectively formed on the facing surfaces of the push rods, and a pinion rotatably provided between the pair of upper and lower push rods so as to mesh with the rack portions at the same time. , The pinion is driven and the pinion is driven to move the pair of upper and lower extruding rods. It is characterized in further comprising a pinion drive means for moving along the Surain.

In the roll cross rolling machine according to the second aspect of the present invention, the work roll chocks for supporting the opposite ends of the pair of upper and lower work rolls are rotated in opposite directions along the path line to form the pair of upper and lower work rolls. In a roll cross rolling machine that changes the clearance distribution between these work rolls by crossing, a pair of upper and lower push rods that are movably provided in the direction parallel to the pass line and bias the work roll chocks, respectively, A pair of upper and lower rack portions respectively formed on the facing surfaces of the push rods, a pinion rotatably provided between the pair of upper and lower push rods so as to mesh with the rack portions, and the pair of upper and lower push rods. It is connected to one of the rods and drives this one extruding rod to rotate the pinion. It is characterized in further comprising a push rod driving means for moving the other of said pushrod in the opposite direction.

[0011]

In the first aspect of the present invention, the pinion is rotated by the pinion driving means, and the pair of upper and lower extruding rods having the rack portion meshing with the pinion are moved in opposite directions along the path line. The work roll chocks are rotated in opposite directions so that a pair of upper and lower work rolls horizontally cross each other.

In the second aspect of the present invention, one of the pair of upper and lower extruding rods is moved along the pass line by the extruding rod driving means, and the pinion meshed with the rack portion formed on the pair of upper and lower extruding rods is rotated. Since the other extruding bar is moved in the direction opposite to that of the one extruding bar, the pair of upper and lower work roll chocks rotate in mutually opposite directions, and the pair of upper and lower work rolls cross in the horizontal direction.

[0013]

EXAMPLE A rolled material 10 passing through the central portion of a housing 1 as shown in FIG. 1 showing a right side surface of a partially broken main portion which is an embodiment of a roll cross rolling machine according to the first aspect of the present invention.
The upper work roll 2 and the lower work roll 3 are provided above and below the pass line of No. 1, and the upper work roll chock provided in the housing 1 is provided at both ends of the upper work roll 2 and the lower work roll 3. 4 and a lower work roll chock 5 are rotatably supported respectively. An upper backup roll 6 and a lower backup roll 7 are provided on the upper part of the upper work roll 2 and the lower part of the lower work roll 3, respectively, and at both ends of the upper backup roll 6 and the lower backup roll 7, Upper backup roll chock 8 provided on the housing 1
And by the lower backup roll chock not shown,
Each is rotatably supported. The upper backup roll 6 and the lower backup roll 7 are adapted to press the upper work roll 2 and the lower work roll 3, respectively, and rotate in synchronization with each other.

The upper cylinder head 10 is in pressure contact with the front and rear surfaces of the upper work roll chock 4, and the lower cylinder head 11 is in pressure contact with the front and rear surfaces of the lower work roll chock 5. . The upper cylinder head 10 and the lower cylinder head 11 are respectively movable in the front-rear direction so as to rotate the corresponding upper work roll chock 4 and lower work roll chock 5 in the horizontal direction. The upper roll bending cylinder 12 is provided between the upper cylinder head 10 on the front and rear sides and the protrusions on the front and rear sides of the upper work roll chock 4.
A lower roll bending cylinder 13 is provided between the lower cylinder head 11 on both front and rear sides and the projections on both front and rear sides of the lower work roll chock 5. The upper roll bending cylinder 12 and the lower roll bending cylinder 13 vertically move the corresponding upper work roll chock 4 and lower work roll chock 5 to correct the deflection of the upper work roll 2 and the lower work roll 3. It is supposed to do.

On the other hand, the upper extruding rod 1 having the upper rack portion 14 formed on the lower surface of the upper cylinder head 10 on both front and rear sides.
5 is connected, and the lower cylinder head 11 on both front and rear sides is connected to a lower extrusion rod 17 having a lower rack portion 16 formed on the upper surface. A pinion 18 that meshes with the upper rack portion 14 and the lower rack portion 16 is rotatably provided between the upper extruding rod 15 and the lower extruding rod 17 on both front and rear sides,
A worm wheel 20 is coaxially connected to the pinion 18 via a shaft 19. A worm 21 provided outside the side column of the housing 1 is meshed with the worm wheel 20, and the worm 21 is installed on the front and rear sides of the upper part of the housing 1 via a rotary shaft 22 and a bevel gear box 23. The connected motor 24 is connected.

Therefore, when the rolled material 101 is rolled by crossing a pair of upper and lower work rolls, the motors 24 on both the front and rear sides are simultaneously driven to drive the bevel gear box 23 and the rotary shaft 22.
The worm 21 is rotated through the worm wheel 20.
And the pinion 18 rotate clockwise in the figure. As a result, the upper extruding rods 15 on the front and rear sides move to the rear side to move the upper cylinder head 10 to the rear side, and the lower extruding rods 17 on both the front and rear sides move to the front side to move to the lower cylinder head 1.
Move 1 to the front. Therefore, the upper work roll chock 4 and the lower work roll chock 5 rotate horizontally with respect to each other, and the upper work roll 2 and the lower work roll 3 cross in the horizontal direction. Therefore, the rolled material 10 is fed between the upper work roll 2 and the lower work roll 3 to be rolled.

In this embodiment, the motor 2 is provided on both front and rear sides.
However, the number of these motors is not particularly limited. For example, if a motor having two drive shafts is used, the drive systems on the front and rear sides can be driven by one motor in exactly the same way. is there.

In the embodiment of the roll cloth rolling mill according to the first aspect of the present invention described above, the pinion 18 is driven to move the upper extruding bar 15 and the lower extruding bar 17 in opposite directions. It is also possible to move either the upper extrusion rod 15 or the lower extrusion rod 17 through the pinion 18 in the opposite direction by driving either one.

FIG. 2 shows a side view of a partially broken main portion which is an embodiment of the roll cross rolling machine according to the second aspect of the present invention. Here, the same parts as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 2, the upper rack portion 14 is provided between the upper extrusion bar 15 and the lower extrusion bar 17 on both front and rear sides.
A pinion 18 that meshes with the lower rack portion 16 is provided. A shaft 19 rotatably attached to the housing 1 is integrally fitted to the pinion 18, and the upper push rod 15 and the lower push rod 17 are provided. And are to be moved in synchronism with each other in opposite directions. The hydraulic cylinders 25 installed outside the side columns of the housing 1 are connected to the upper extruding rods 15 on the front and rear sides, respectively.
The hydraulic cylinder 25 moves the upper push rod 15 by adjusting the hydraulic pressure by a hydraulic device (not shown).

Therefore, when the rolled material 101 is rolled by crossing a pair of upper and lower work rolls, a hydraulic device (not shown) is driven to adjust the hydraulic pressure of the hydraulic cylinders 25 on the front and rear sides, and the upper push rod 15 is moved. After moving to the rear side, the upper cylinder head 10 moves to the rear side. Then, by the movement of the upper push rod 15, the lower push rod 17 moves to the front side via the pinion 18, so that the lower cylinder head 11
Moves to the front. Therefore, the upper work roll chock 4 and the lower work roll chock 5 rotate horizontally with respect to each other, and the upper work roll 2 and the lower work roll 3 cross in the horizontal direction. Therefore, the rolled material 101 is fed between the upper work roll 2 and the lower work roll 3 to be rolled.

In this embodiment, the hydraulic cylinder 25 is connected to the upper extruding rod 15, but the invention is not limited to this, and the hydraulic cylinder 25 can be connected to the lower extruding rod 17 in the same manner. Further, in this embodiment, the hydraulic cylinder 25 is used as the pushing rod driving means, but the present invention is not limited to this, and it can be driven in the same manner by using a feed screw, for example. Everything is the same. In particular, in the case of the push rod driving device using these feed screws and the like, it is not necessary to connect the push rods to the front and rear in the same manner, and even if the push rod driving devices are arbitrarily connected to the front and rear, respectively, It can also be driven.

[0023]

According to the roll cross rolling machine of the first aspect of the present invention, the pinion is rotated by the pinion driving means, and the pair of upper and lower extruding rods forming the rack portion that meshes with the pinion are opposite to each other along the pass line. By moving the pair of upper and lower work roll chocks in opposite directions by moving in the direction, the pair of upper and lower work rolls are crossed in the horizontal direction, so that the roll crossing device is simplified and the cost of the rolling mill is reduced. The maintenance management of the rolling mill can be facilitated.

According to the roll cross rolling machine of the second aspect of the present invention, one of the pair of upper and lower extruding rods is moved along the pass line by the pushing rod driving means, and the rack portion formed on the pair of upper and lower extruding rods. By rotating the pinion that meshes with and moving the other extruding bar in the direction opposite to that of the one extruding bar, the pair of upper and lower work roll chocks are rotated in opposite directions, and the pair of upper and lower work rolls are moved horizontally. Since the cloth is crossed, the roll cloth device can be simplified, and the cost of the rolling mill and the maintenance management of the rolling mill can be facilitated.

[Brief description of drawings]

FIG. 1 is a right side view of a partially broken main part which is an embodiment of a roll cloth rolling mill according to the first aspect of the present invention.

FIG. 2 is a right side view of a partially broken main portion which is an embodiment of a roll cross rolling machine according to the second aspect of the present invention.

FIG. 3 is a right side view of a partially broken main portion, which is an example of a conventional roll cloth rolling mill.

FIG. 4 is a view taken along the line IV-IV in FIG.

[Description of symbols] 1 housing 2 upper work roll 3 lower work roll 4 upper work roll chock 5 lower work roll chock 6 upper backup roll 7 lower backup roll 8 upper backup roll chock 10 upper cylinder head 11 lower cylinder head 12 upper roll bending cylinder 13 lower Roll bending cylinder 14 Upper rack section 15 Upper extrusion bar 16 Lower rack section 17 Lower extrusion bar 18 Pinion 19 Shaft 20 Worm wheel 21 Worm 22 Rotating shaft 23 Bevel gear box 24 Motor 25 Hydraulic cylinder 101 Rolled material

Claims (2)

[Claims] 1. A clearance between these work rolls is obtained by rotating work roll chocks, which respectively support both ends of a pair of upper and lower work rolls, in opposite directions along a path line to cross the pair of upper and lower work rolls. In a roll cross rolling machine that changes the distribution, a pair of upper and lower extruding rods that are movably provided in a direction parallel to the pass line and urge the work roll chocks, respectively, and are formed on the opposing surface sides of these extruding rods, respectively. A pair of upper and lower rack portions, and a pinion rotatably provided between the pair of upper and lower extruding rods so as to mesh with the rack portions at the same time, and the pinion connected to and driven by the pinion. And a pinion drive means for moving the extruded rod of FIG. Characteristic roll cross rolling machine. 2. A work roll chock that supports both ends of a pair of upper and lower work rolls is rotated in opposite directions along a path line to cross the pair of upper and lower work rolls, thereby leaving a clearance between the work rolls. In a roll cross rolling machine that changes the distribution, a pair of upper and lower extruding rods that are movably provided in a direction parallel to the pass line and urge the work roll chocks, respectively, and are formed on the opposing surface sides of these extruding rods, respectively. And a pair of upper and lower rack portions, a pinion rotatably provided between the pair of upper and lower push rods so as to mesh with the rack portions, and one of the pair of upper and lower push rods. Drive the push rod to rotate the pinion and move the other push rod in the opposite direction. A roll cloth rolling machine, comprising: a feeding rod driving means.