JP2002126808A - Vertical rolling mill and operating instructions for vertical rolling mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical rolling mill and operating instructions for the vertical rolling mill capable of making the rolling mill more compact and capable of improving the rolling efficiency. SOLUTION: In the vertical rolling mill to roll steel bar stock such as a flat steel bar, a round bar and a steel square bar with a vertical roll, a driving shaft is provided vertically, a plurality of vertical rolls are provided in the outer periphery of the driving shaft, a large-sized discoid gear is inserted into the upper section of the driving shaft, a small-sized gear is inserted into the end of the vertical roll shaft respectively, and at the same time, the vertical rolling mill characterized by the fact that the small-sized gear and the large- sized gear are mutually engaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical rolling mill for rolling flat steel, round steel or square steel, and a method for operating a vertical rolling mill.

[0002]

2. Description of the Related Art Conventionally, when rolling flat steel, round steel, square steel, etc.,
As shown in FIG. 7, a continuous rolling mill in which a horizontal roll rolling mill H and a vertical roll rolling mill V are continuously arranged is used, and the vertical roll rolling mill is provided with a hole called a caliber. What changed the shape according to the rolling row was used. As shown in FIG. 8, a rolling method is performed in which a vertical roll mill V is disposed between horizontal roll mills H, and rolling is performed by repeatedly passing a rolled material during the vertical rolling mill V. Further, in this vertical roll rolling mill, a plurality of cavities are provided at the top and bottom, and rolling is performed by shifting the cavities of the vertical rolls up and down every time a rolled material repeatedly passes through the vertical rolls.

[0003] As for this vertical roll roll shifting device, Japanese Patent Application Laid-Open No. Hei 5-277530 discloses a device for vertically moving a vertical roll having two calibers in the axial direction. In this device, when a roll chock incorporating a vertical roll is moved up and down in order to move the position of the caliber according to the rolling shape of the conventional rolled material, the lifting device requires a large capacity because the roll chock itself is very heavy. . The above-mentioned Japanese Patent Application Laid-Open No. Hei 5-277530 is a technique proposed to solve this problem, and discloses an inner roll chock having a roll and a roll bearing, an outer chock in which the inner roll chock is housed in a vertically movable manner, and an upper part of the outer chock. And a clamping device for clamping the inner roll chock to the outer roll chock. As described above, since the inner roll chock is divided into the inner roll chock and only the inner roll chock is moved up and down, the weight is reduced and the elevating device becomes compact.

[0004] As a vertical roll elevating device, a Japanese Utility Model 5
No. -5206 is disclosed. According to it, 2
The vertical roll with two holes forms a motor, coupling,
It is driven by a downwardly transmitting drive device composed of a speed reducer, upper and lower universal joints and a spindle. The positioning of the die to the rolling position is carried out by lifting with a hydraulic cylinder arranged in a rolling housing supporting a vertical roll. The vertical rolls are exchanged by gripping the spindle portion with a pair of spindle carriers suspended from the structure, pushing up the lower universal joint to remove it from the roll shaft, and retracting the rolling housing.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. Hei 5-277
According to the technology disclosed in Japanese Patent Publication No. 530, the load on the lifting device can be reduced by dividing the inner roll chock and the outer roll chock, and the lifting device can be made more compact than the conventional lifting device. There is no substitute for the lifting device supporting the load of the vertical roll chock at the point of moving in the vertical direction, and the strength required to support the minimum load as the lifting device is required. Further, in order to raise and lower the space vertically, a space for installing a lifting device and a space for replacing a vertical roll are required two times above the rolling line.

In the technique disclosed in Japanese Utility Model Laid-Open Publication No. 5-5206, a vertical roll is supported by a rolling housing, and a large-capacity hydraulic cylinder is required which lifts the rolling housing with a hydraulic cylinder and adjusts a hole shape to a rolling position. When the vertical roll is replaced, a spindle carrier separately attached to a structure is required. If there is no structure, a structure for installing the spindle carrier is separately required. In order to adopt the present technology in a continuous rolling line, a large facility arrangement that requires a place for retracting the rolling housing and a structure for installing a spindle carrier is required.

The present invention has been made to solve the above-mentioned conventional problems, and has a compact rolling mill body.
Another object of the present invention is to provide a vertical rolling mill having high rolling efficiency and an operation method thereof.

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention has the following features. (1) In a vertical rolling mill that rolls flat steel, round steel, or square steel with vertical rolls, a drive shaft is erected, and a plurality of vertical rolls are arranged around the outer periphery of the drive shaft. A vertical rolling mill characterized in that a large disc-shaped gear is fitted into the shaft, small gears are fitted into the shaft ends of the vertical rollers, and the small gear and the large gear are meshed with each other.

(2) A disk-shaped metal fitting is fitted to the drive shaft via a bearing, and the plurality of vertical rolls are supported upright on their upper and lower shafts by bearings provided on the disk-shaped metal fitting.
The vertical rolling mill as described in the above item (1), characterized in that these have a lower structure enclosing them in a chock. (3) The disk-shaped metal member has a gear formed on the outer periphery of the disk-shaped metal member, and a pinion for rotating the disk-shaped metal member is meshed with a predetermined position on the outer periphery of the disk-shaped metal member. The vertical rolling mill according to (1). (4) The vertical rolling mill according to the above (2) or (3), wherein a tapered pin for fixing a rolling position of the vertical roll is disposed on the disc-shaped metal member. (5) The vertical rolling mill as described in any one of (1) to (4) above, wherein the plurality of vertical rolls are each formed with a different hole shape.

(6) In a vertical rolling mill for rolling flat steel, round steel or square steel with vertical rolls, a drive shaft having a large disc-shaped gear inserted at its tip is erected, and a plurality of drive shafts are mounted on the outer periphery of the drive shaft. The vertical rolls are arranged, small gears are respectively fitted to the shaft ends of the vertical rolls, the small gears are meshed with the large gears, the large gears are rotated and rolled, and the next vertical rolls are rolled. A method for operating a vertical rolling mill, wherein positioning to a rolling position is performed by a pinion meshing with a gear disposed on an outer periphery of a disk-shaped metal member.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on an embodiment shown in the drawings. 1 is a side sectional view of a vertical rolling mill showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, FIG. 3 is a sectional view taken along line BB of FIG. 4
Is a cross-sectional view taken along the line CC in FIG. 2, FIG. 5 is a cross-sectional view taken along the line DD in FIG. 2, FIG. 6 shows a hole shape of a vertical roll when flat steel is reciprocally rolled, and FIG. Rolling line and FIG.
FIG. 3 is a view showing a rolling line for performing continuous rolling by reciprocating a rolled material.

FIG. 1 is a side sectional view showing a pair of vertical rolling mills according to the present invention. In FIG. 1, reference numeral 18 denotes a fixed bearing, and a drive shaft 13 is provided inside the bearing via a bearing 15. The upper portion of the rotating shaft 13 has a zappen 12, and a large diameter gear 14 is fitted to the zappen 12. Although not shown, a motor for rotating this rotary shaft is connected via a coupling or the like to an upper end portion of the Zappen 12. By driving this motor, the drive shaft 13 is driven to rotate.

On the other hand, the fixed bearing 18 has a fixed bearing 18.
A bearing 16 is provided to fit around the outer periphery of the disk, and the disc-shaped metal member 9 is fitted through the bearing 16. Vertical rolls 1 to 8 provided with a die 29 around the roll barrel are arranged in the disk-shaped metal member 9. A plurality of the vertical rolls 1 to 8 are provided around the fixed bearing 18. In FIG. 1, 8
They are arranged individually.

The vertical rolls 1 to 8 have their upper and lower shafts mounted on a disk-shaped metal 9 via bearings 11. At the tip of the upper shaft of the vertical roll, a small diameter gear 10 is fitted into each vertical roll. And this small diameter gear 10
The vertical rolls 1 to 8 are configured to rotate by causing the drive shaft 13 to rotate by meshing with the large diameter gear 14. A large diameter gear 23 for positioning a vertical roll is fitted around the lower periphery of the disc-shaped metal member 9. A pinion 24 meshes with the large diameter gear 23 for positioning.

The vertical roll constructed as described above is stored in a vertical chock 17. The vertical rolls 1 to 8 contained in the vertical chock 17 are provided in opposition to form a pair, and the pair of vertical rolls is accommodated in the housing 22 to constitute a vertical rolling mill. Further, the vertical screws 17 and 20 and the balance cylinder 21 are connected to the vertical chock 17 and have a structure that can be adjusted to the left and right vertical roll rolling positions.

FIG. 2 is a sectional view taken along line AA of FIG. 1 and shows a pair of vertical rolling mills housed in a housing 22. In FIG. 2, a large diameter gear 14 is fitted to the zappen 12, and eight small diameter gears 10 mesh with the outer periphery of the large diameter gear 14. Vertical rolls 1 to 8 are connected to the small diameter gear 10, respectively. This vertical roll 1
8 is housed in a disc-shaped hardware 9. Disc-shaped hardware 9
A positioning roll 23 of a vertical roll is fitted on the outer periphery of the lower part of the shaft, and a pinion 24 is meshed with the positioning roll 23.

The vertical rolls 1 to 8 configured as described above include:
The vertical chocks 17 accommodated in the vertical chocks 17 and the groups of the vertical rolls 1 to 8 are arranged to face each other to constitute a pair of vertical rolling mills. In the vertical chock 17, a balance cylinder 21 is provided to remove the play (gap) of the screw down screws 19 and 20 in order to adjust the right and left vertical roll groups to an accurate rolling position. This screw 1
The rolled material S is rolled by a pair of vertical rolls 1 through vertical chocks 17 according to 9 and 20.

FIG. 3 is a sectional view taken along line BB of FIG. A bearing 15 is provided on the outer periphery of the drive shaft 13, and a fixed bearing 18 is provided on the outer periphery of the bearing 15.
A bearing 16 is provided on the outer periphery of the fixed bearing 18.
Is disposed around the outer periphery of the bearing 16.
Is arranged. Eight vertical rolls 1 to 8 are erected on the disk-shaped metal member 9 around the drive shaft 13. A large-diameter positioning gear 23 is fitted around the lower periphery of the disc-shaped metal member 9, and a pinion 24 is attached to the large-diameter positioning gear 23.
Are meshed.

FIG. 4 is a view showing the arrangement of the positioning large-diameter gear 23 and the pinion 24 fitted on the outer periphery of the lower part of the disk-shaped metal member 9. The positioning large-diameter gear 23 is meshed with the pinion 24. The pinion is connected to a motor 25.
By driving the motor 25, the pinion is rotated, and the positioning large-diameter gear 23 is rotated.

FIG. 5 is a detailed view of a fixing device for fixing the disk-shaped metal member 9 at a predetermined position (rolling position of the vertical roll 1). The disk-shaped metal member 9 is rotated by a motor 25 via a pinion 24 and vertically. One of the vertical rolls 1 to 8 is moved to the rolling position. When the movement is completed, the tapered pin 27 is inserted into the bottom of the disk-shaped metal member 9 and fixed. A tapered hole 26 for inserting a taper pin 27 is provided at the bottom of the disc-shaped metal 9, and the disc-shaped metal is fixed by inserting the tapered pin 27 into the tapered hole 26.

7 and 8 show a continuous rolling line. FIG. 7 shows a line in which horizontal rolling mills H and vertical rolling mills V are alternately arranged to continuously roll the rolled material. ~ V
In 4), the vertical rolling mill of the present invention is arranged. FIG.
Is a rolling line in which a vertical rolling mill V is disposed between horizontal rolling mills H, and a rolled material is reciprocated and continuously rolled. The vertical rolling mill of the present invention is arranged in this rolling line. It is.

FIG. 6 is a view showing the rolling state of the vertical rolls 1 to 8 when the vertical rolling mill of the present invention is used in the rolling line shown in FIG. Vertical rolling mill will be described. Rolled material S passed through reciprocating mill BD
Is rolled by the horizontal rolling mill H1 while holding the surface of the rolled material S with horizontal rolls. And it is sent to the vertical mill V arranged next. In a vertical rolling mill, an edge portion is rolled by being set on a vertical roll 1. In this rolling line,
The holes of the vertical rolls 1 to 8 set in the vertical rolling mill are provided so as to gradually become smaller as shown in FIG. Accordingly, the hole type provided in the vertical rolls 1 to 8 is 1>
2>3>4>5>6>7> 8.

As described above, the vertical roll 1 is set when the rolled material in the first pass passes through the vertical rolling mill, and the vertical roll 2 is set when the rolled material passes in the second pass. The predetermined rolling is completed by sequentially moving and setting the vertical rolls 1 to 8 in this manner. The setting change from the vertical roll 1 to the vertical roll 2 is performed by a motor 25 connected via a pinion 24 fitted on the outer periphery of the disk-shaped metal member 9 and meshing with the positioning large-diameter gear. When the rolling position is reached, the position of the vertical roll is fixed by inserting a taper pin 27 into a tapered hole 26 provided at the bottom of the disk-shaped metal piece 9.
Driving of the vertical rolls 1 to 8 during rolling is performed by a drive shaft 13.

In the case where the vertical rolling mill of the present invention is installed on the rolling line shown in FIG. Pinion 2 that meshes with a large diameter positioning gear when rolling
4 is rotated by a motor 25, and when the vertical roll reaches the rolling position, a taper pin 27 is inserted into a tapered hole 26 provided at the bottom of the disk-shaped metal member 9, thereby fixing the vertical roll position. When two or four types of the same hole type are used, in the event that the vertical roll is damaged or worn, the vertical roll can be moved to the next vertical roll and used.

It is also possible to reduce the number of vertical rolls by arranging double-row holes on the vertical rolls. Although eight vertical rolls are employed in the present embodiment, the present invention is not limited to this, and the desired function can be sufficiently satisfied by appropriately arranging a number of the vertical rolls around the drive shaft. be able to.

[0026]

As described above, by adopting the vertical rolling mill of the present invention, it is not necessary to move the die up and down, and a vertical moving device is not required, and the rolling mill main body becomes compact. In addition, by arranging a plurality of vertical rolls, the frequency of roll change is small, and the rolling efficiency is improved. In addition, since the vertical rolls are small, the reaction force during rolling is also small, the rolling power can be reduced, and the power consumption can be improved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a vertical rolling mill showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 2;

FIG. 5 is a sectional view taken along line DD of FIG. 2;

FIG. 6 is a view showing a hole shape of a vertical roll when reciprocating rolling flat steel.

FIG. 7 is a diagram showing a rolling line for rolling by a continuous rolling mill.

FIG. 8 is a diagram showing a rolling line for performing continuous rolling by reciprocating a rolled material.

[Explanation of symbols]

 1-8 vertical roll 9 disk-shaped hardware 10 small-diameter gear 11 pairing 12 zappen 13 drive shaft 14 large-diameter gear 15 bearing 16 bearing 17 vertical chock 18 fixed bearing 19 pressure screw DESCRIPTION OF SYMBOLS 20 ... Reduction screw 21 ... Balance cylinder 22 ... Housing 23 ... Large diameter positioning gear 24 ... Pinion 25 ... Motor 26 ... Taper hole 27 ... Taper pin 28 ... Cylinder 29 ... Hole type S ... Rolled material

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission Date] October 25, 2000 (2000.10.
25)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

(2) A disk-shaped metal fitting is fitted to the drive shaft via a bearing, and the plurality of vertical rolls are supported upright on their upper and lower shafts by bearings provided on the disk-shaped metal fitting.
The vertical rolling mill according to the above (1), wherein the vertical rolling mill has a structure including these in a chock. (3) The disk-shaped metal member has a gear formed on the outer periphery of the disk-shaped metal member, and a pinion for rotating the disk-shaped metal member is meshed with a predetermined position on the outer periphery of the disk-shaped metal member. The vertical rolling mill according to (1). (4) The vertical rolling mill according to the above (2) or (3), wherein a tapered pin for fixing a rolling position of the vertical roll is disposed on the disc-shaped metal member. (5) The vertical rolling mill as described in any one of (1) to (4) above, wherein the plurality of vertical rolls are each formed with a different hole shape.

Claims (6)

[Claims] In a vertical rolling mill for rolling flat steel, round steel, or square steel with vertical rolls, a drive shaft is erected, and a plurality of vertical rolls are arranged around the outer periphery of the drive shaft. A vertical rolling mill characterized in that a large disc-shaped gear is fitted into the tip of the roller, small gears are fitted into the shaft ends of the vertical rollers, and the small gear and the large gear are meshed with each other. 2. A disk-shaped metal fitting is fitted to a drive shaft via a bearing, and the plurality of vertical rolls are supported upright on their upper and lower shafts by bearings provided on the disk-shaped metal. The vertical rolling mill according to claim 1, wherein the vertical rolling mill has a lower structure enclosing in a chock. 3. The disk-shaped metal member is formed with a gear on the outer periphery of the disk-shaped metal member, and a pinion for rotating the disk-shaped metal member is meshed with a predetermined position on the outer periphery of the disk-shaped metal member. Item 4. The vertical rolling mill according to Item 2. 4. The vertical rolling mill according to claim 2, wherein a tapered pin for fixing a rolling position of the vertical roll is disposed on the disk-shaped metal member. 5. A method according to claim 1, wherein said plurality of vertical rolls have different hole shapes.
The vertical rolling mill according to any one of the above. 6. A vertical rolling mill for rolling flat steel, round steel, or square steel by a vertical roll, in which a drive shaft having a large disc-shaped gear inserted at its tip is erected, and a plurality of drive shafts are provided on the outer periphery of the drive shaft. The vertical rolls are arranged, small gears are respectively fitted to the shaft ends of the vertical rolls, the small gears are meshed with the large gears, the large gears are rotated and rolled, and the next vertical rolls are rolled. A method for operating a vertical rolling mill, wherein positioning to a rolling position is performed by a pinion meshing with a gear disposed on an outer periphery of a disk-shaped metal member.