JPH11104706A - Roll mill - Google Patents

Abstract

(57) [Problem] To provide a four-roll rolling mill in which roll exchange can be easily and quickly performed and re-adjustment of roll reduction is not required. SOLUTION: The housing comprises a first housing 3 and a second housing 4 which are split-type housings, a half bearing portion is formed on a mating surface of the first housing 3, and a half bearing portion is formed on a mating surface of the second housing 4. A bearing portion is formed, and a shaft portion of each of the roll units R1 and R2 is sandwiched between the first and second housings 3 and 4 via an eccentric cartridge in a bearing in which two half bearing portions are combined. . Since the rotation drive mechanism 30 of the reduction amount adjusting device is attached to the first housing 3 side, the reduction amount adjustment value does not change when the housing is separated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a roll mill. In more detail, 4 is used for rolling wires and bars.
The present invention relates to a roll rolling machine such as a roll rolling mill, a three-roll rolling machine, and a two-roll rolling mill.

[0002]

2. Description of the Related Art In the rolling of a rod or wire by a roll rolling mill,
By adjusting the roll reduction amount, free size rolling can be performed within a predetermined amount range. However, if it exceeds the range, it is necessary to replace the roll with a different hole shape and perform rolling. If a variety of small-quantity production is to be performed at a steel mill, the frequency of roll exchange will inevitably increase, but this roll exchange requires a great deal of labor.

For example, the applicant of the present invention disclosed in Japanese Patent Laid-Open No. 7-27590.
The four-roll rolling mill proposed in No. 6 uses five casings as shown in FIG. That is, an upper casing 102 and a lower casing 103 above and below the intermediate casing 101, a pair of idler roll brackets 104 on the left and right,
105, and these five casings make up a pair of upper and lower horizontal rolls 1 and 1 roll unit R1 and a pair of left and right vertical rolls 2 and 2 roll units R
2 is held, and the interval between the opposing rolls is held so as to be adjustable.

[0004]

In the above-mentioned four-roll rolling mill, when changing rolls, as shown in FIG. 10, the hydraulic nut 107 screwed to the tie rod 106 is unscrewed, and the casings 102 to 105 are removed. It is disassembled with respect to the intermediate casing 101, and the respective roll units R1 and R2 are extracted from the respective casings 102 to 105. Further, as shown in FIG.
1, eccentric cartridge half 112, cartridge top plate 11
3, lock nut 114, bearing 115, eccentric cartridge half 116, taper sleeve 117, drive roll
118 must be disassembled. The roll unit R2 also has a slightly smaller number of parts, but is almost the same. The above operation requires about 8 hours for two rolls for four roll units, and if the number of roll changes is large, productivity is significantly reduced.

[0005] The assembly of a new roll unit is performed in substantially the reverse of the above procedure. However, since the eccentric cartridge halves 112 and 116 are completely re-assembled after being removed from the housing, the amount of reduction in the amount of reduction is completely adjusted. Since it must be performed from the beginning, that is, it is necessary to start by performing zero adjustment for all four units, it is extremely troublesome in this respect, and the replacement work is lengthened. The three-roll rolling mill and the two-roll rolling mill also require a large number of disassembly and man-hours for almost the same reason, though the degree is different.

[0006] In view of such circumstances, an object of the present invention is to provide a roll mill in which the roll can be easily and quickly exchanged and the re-adjustment of the roll reduction can be extremely easily performed.

[0007]

According to a first aspect of the present invention, there is provided a roll rolling mill in which a plurality of roll units and an eccentric cartridge type rolling amount adjusting device for the roll units are mounted on a housing. A first housing and a second housing, each of which is a split housing that can be freely coupled and separated, are provided with a half bearing portion on a mating surface of the first housing, and a half bearing portion is formed on a mating surface of the second housing. Is formed, and the shaft portion of each roll unit is sandwiched between the first and second housings via an eccentric cartridge in a bearing in which two half bearing portions are combined. According to a second aspect of the present invention, in the roll rolling mill, a rotary drive mechanism of the reduction amount adjusting device is attached to only the first housing. According to a third aspect of the present invention, there is provided a roll rolling mill in which an arbitrary roll unit among a plurality of roll units is a drive roll unit, and an eccentric cartridge constituting a reduction amount adjusting device of the drive roll unit is divided into two in a radial direction. First half cartridge and second
The first half cartridge is housed in a half bearing portion of the first housing, and the second half cartridge is housed in a half bearing portion of the second housing. . The roll rolling mill according to claim 4, wherein a non-eccentric cylindrical sleeve is extrapolated around an outer periphery of a bearing fitted to a shaft portion of the roll unit, and the non-eccentric cylindrical sleeve is composed of a first half cartridge and a second half. The cartridge is housed in a combined eccentric cartridge.

According to the first aspect of the present invention, if the second housing is detached from the first housing, each roll unit is exposed and can be easily taken out of the first housing.
Reassembly can be performed in the reverse order, and disassembly and assembly can be performed with a small number of steps. According to the second aspect of the present invention, even if the second housing is taken out, the rotary drive mechanism of the reduction amount adjustment device remains attached to the first housing, and the sector gear constituting the reduction amount adjustment device also remains on the first housing side. Therefore, the rolling amount adjustment value does not change and zero adjustment is not required. Therefore, re-adjustment after assembling to a new roll requires only a slight fine adjustment, so that it can be performed extremely easily. According to the invention of claim 3, when the second housing is removed from the first housing, the first half cartridge of the eccentric cartridge remains in the half bearing portion of the first housing, and the second half cartridge is in the second housing. The roll unit is taken out in a state of being housed in the half bearing part, so that the subsequent disassembly and reassembly of the roll unit can be easily performed. According to the invention of claim 4, it is only necessary to fit a non-eccentric cylindrical sleeve into the eccentric cartridge at the time of assembling, and it is not necessary to align the roll unit with the eccentric cartridge, so that the assembling time can be greatly reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the present invention is applied to a four-roll rolling mill will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a roll rolling mill according to an embodiment of the present invention, and FIG. 2 is a first view of a state in which roll units R1 and R2 are taken out.
FIG. 3 is a plan view of the housing 3, FIG. 3 is a bottom view of the second housing 4, FIG. 4 is an exploded side view of the housing, FIG. 5 is a plan view of the first housing 3 in which the roll units R1 and R2 are incorporated, and FIG. FIG. 7 is a partial cross-sectional plan view of the roll unit R2 assembled to the first housing 3 as viewed in the direction of the arrow VI in FIG. 2, FIG. 7 is a view in the direction of the arrow VII in FIG. 6, and FIG. FIG. 9 is an explanatory view of the assembly and disassembly of the idler roll unit R2.

In FIGS. 1 to 3, reference numeral 3 denotes a first housing;
Reference numeral 4 denotes a second housing.
This constitutes a split housing. That is, the first and second housings 3 and 4 are joined at the mating surface of each other,
When tightened with tie bolts 6, four roll units R
1, R2 is rotatably supported, and can be held in a state where it can be rolled.

Further, when viewed in detail, a bolt insertion hole 7 for passing a tie bolt 6 and a female screw hole 8 are formed in the inner ribs 5 of the first and second housings 3 and 4, and the second housing 4 is connected to the first housing. 3 can be fastened with tie bolts 6, or through bolt insertion holes formed in both housings 3, 4, and can be fastened from both sides with hydraulic nuts or the like.

The upper surfaces of the inner ribs 5 and the outer peripheral ribs 9 of the first and second housings 3 and 4 are formed as mating surfaces.
Four roll units R1 and R2 are placed at appropriate places on the inner rib 5.
Is formed in the shape of a semi-circular half bearing for supporting the bearing. In the known reduction amount adjusting device, the eccentric cartridge is fitted and held in a hole formed in the housing by an integral sleeve, but the eccentric cartridge of the roll unit R1 used in the present invention is divided into two parts in the radial direction. A half-type cartridge is used. The eccentric cartridge of the roll unit R2 uses an integral sleeve. Then, as shown in FIG.
The first half cartridge 11 which is one of the split eccentric cartridges constituting the rolling amount adjusting device of the roll unit R1 is fitted into the half bearing portion of the second housing, and as shown in FIG. A second half cartridge 12, which is the other split mold, is fitted in the half bearing portion 4 of FIG.

In the first and second half cartridges 11 and 12 constituting the eccentric cartridge, the center of the outer circumference circle and the center of the inner circumference circle are displaced in the assembled state, and the thickness gradually changes in the circumferential direction. It is a sleeve to do. The first half cartridge 11 of the eccentric cartridge is rotatably fitted to the half bearing portion of the first housing 3, and the second half cartridge 1
2 is rotatably fitted in the half bearing portion of the second housing 4, so that when the first half cartridge 11 rotates in the bearing in which the two half bearing portions are combined, the second half cartridge 12 is also rotated. , Can be pushed around in the same bearing to function as an eccentric cartridge. Therefore, this eccentric cartridge (first and second half cartridges 11,
12) Insert the shaft of the roll unit R1 into the inner circumference of
Eccentric cartridge (first and second half cartridges 11,
When 12) is rotated around its own axis, the roll unit R
The axis of one shaft revolves, the distance between the pair of drive rolls 1 and 1 increases or decreases, and the roll reduction amount can be adjusted.

The roll unit R of the driving rolls 1 and 1
As described above, the eccentric cartridge 1 includes the first half cartridge 11 and the second half cartridge 12, and the first half cartridge 11 and the second half cartridge 12 have substantially the same configuration. However, as will be described later, the only difference is that the sector gear receiving the cartridge rotation torque is attached to the first half cartridge 11 and not attached to the second half cartridge.

As shown in FIGS. 6 and 7, the eccentric cartridge for the roll unit R2 of the idler rolls 2 and 2 is provided at both ends of the shaft 21 supporting the idler roll 2 such that the shaft 21 is eccentrically supported. Fitted sleeve 22
It is composed of The sleeve 22 and the shaft 21 are key 2
At 3, the relative rotation is stopped. The sleeve 22 at one end of the shaft 21 is, as shown in FIGS.
Arc member 24 rotatably held by housing 3
Key 2 provided on the mating surface of the arc-shaped member 24
At 5, the positioning when the roll unit R2 is mounted and the relative rotation stop are performed. A sector gear 26 is fixed to the arc-shaped member 24. Reference numeral 28 denotes a holder for the arc-shaped member 24, which is fixed to the first housing 3. The sleeve 22 is connected to the first housing 3 and the second housing 3.
The housing 4 is rotatably fitted in a bearing formed by combining the two half bearing portions, and is fitted in an arc-shaped member 24 rotatably held in the first housing 3. Therefore, the sleeve 2 is set in the bearing in which the two half bearing portions are combined.
When the shaft 2 rotates integrally with the shaft 21, it can function as an eccentric cartridge.

FIG. 4 shows a state where the second housing 4 is detached from the first housing 3. Drive roll 1,
The motor 31 and the transmission shaft 3 constituting the reduction amount adjusting device 1
2. Rotary drive mechanism 30 such as drive shaft 33, worm 34
Are all attached to the first housing 3 side. FIG.
Although not shown, the rotary drive mechanism for the amount of reduction of the idler rolls 2 and 2 is also attached to the first housing 3 side.

The sector gears 13 and 2 receive torque for rotating the eccentric cartridges of the roll units R1 and R2.
6 is a first half cartridge 11, as shown in FIG.
It is attached only to the 21 side.

Therefore, when the motor 31 shown in FIG. 4 is driven and the first half cartridge 11 to which the sector gear 13 is attached is rotated by the worm 34 of the drive shaft 33,
When the second half cartridge 12 is pushed around in the bearing portions of the first and second housings 3 and 4, a pair of drive rolls 1 and 1 are driven.
Can be adjusted. Idler roll 2,
With respect to the arc-shaped member 2, the motor and the rotation drive mechanism attached to the first housing 3 also rotate the arc-shaped member 2 through the sector gear 26.
As the sleeve 4 rotates, the sleeve 22 rotates, so that the amount of reduction of the idler rolls 2 and 2 can be adjusted.

As shown in FIG. 8, in the roll unit R1, bearings 14 are provided on shafts on both sides of the driving rolls 1 and 1.
Reference numeral 15 is extrapolated, and cylindrical sleeves 16 and 17 are extrapolated on the outer periphery of these bearings 14 and 15. The cylindrical sleeves 16 and 17 are non-eccentric sleeves of equal wall thickness in which the circumference and the outer circumference are not eccentric and concentric.

As shown in FIG. 5, in the assembled state, the sleeves 16 and 17 are accommodated in the first half cartridge 11 on the first housing 3 side, and the second half cartridge on the second housing 4 side is removed therefrom. When the first and second housings 3 and 4 are fastened, the roll unit R1 is held in the mounted state. With regard to the roll unit R2, when the first and second housings 3 and 4 are fastened to cover the second housing 4 so that the sleeve 22 (eccentric cartridge) is fitted to the half bearing portion on the second housing 4 side, the roll unit R2 is rotated. R2 is held in the mounted state.

When disassembling, the second housing 4 is moved to the first
When removed from the housing 3, the second half cartridge 12
Is removed together with the second housing 4, so that when the roll units R1 and R2 are removed from the state where the roll units R1 and R2 are exposed, the roll unit R1 is moved between the cylindrical sleeves 16 and 17 and the first half cartridge 11. Thus, the roll unit R1 can be taken out while the edge is cut off and the first half cartridge 11 is left on the first housing 3 side. For the roll unit R2, the half bearing portion of the first housing 3 and the roll shaft 2
The edge is cut off between the sleeve 22 (eccentric cartridge) at one end and the roll unit can be taken out.

As described above, the motor 31, the transmission shaft 32, the drive shaft 33, the worm 34,
The first half cartridge 11 and the sector gear 13 are all mounted on the first housing 3 and are not mounted on the second housing 4 side. For this reason, as shown in FIG. 4, when the second housing 4 is detached, the initial reference position of the reduction amount in each of the eccentric cartridges of the four roll units R1 and R2 does not fluctuate at all. In addition, there is no need to perform phase adjustment at four points. Then, since the adjustment of the rolling reduction is completed by the fine adjustment to compensate for the roll wear at the time of reassembly, there is an advantage that the adjustment can be easily performed.

In the roll unit R2 of the idler rolls 2, 2, the rotary drive mechanism of the reduction amount adjusting device is also attached to the first housing 3 side, and the sector gear 26 constituting the rotary drive mechanism is provided. The relative rotation coupling and positioning of the arc-shaped member 24 to which is mounted and the sleeve 22 constituting the eccentric cartridge are achieved by the key 25, so that readjustment at the time of disassembly and assembly is performed in the same manner as in the case of the roll unit R1. There is an advantage that it can be easily performed.

FIG. 8 shows the roll unit R1 taken out during disassembly. When replacing the roll 1, simply pull out the taper sleeve 18 to move the roll 1 to the roll shaft 1.
Can be removed from 9. In this case, since the bearings 14 and 15 are held by the sleeves 16 and 17, the labor for disassembly and reassembly is extremely reduced, and the working time can be greatly reduced.

FIG. 9 shows the roll unit R2 taken out during disassembly. When replacing the roll 2, it is only necessary to remove the bolt 27 and remove the roll portion 2A from the boss portion 2B, and the labor for disassembling and assembling is reduced, so that the working time can be greatly reduced.

Although the above-described embodiment is a four-roll rolling mill, the present invention can be applied to a three-roll rolling mill or a two-roll rolling mill. The effect that it can be performed can be produced.

[0027]

According to the first aspect of the present invention, if the second housing is detached from the first housing, each roll unit can be taken out of the first housing as it is, and the assembly can be performed in a reverse procedure. I can do it. According to the second aspect of the present invention, even if the second housing is taken out, the first housing is removed.
Since the rotation drive mechanism of the reduction amount adjustment device attached to the housing does not fluctuate, zero adjustment and phase adjustment are not required, and re-adjustment after assembling a new roll can be performed extremely easily. According to the invention of claim 3, the first housing is connected to the second housing.
When the housing is removed, the first
The half cartridge remains in the half bearing portion of the first housing, and the second half cartridge is taken out in a state of being housed in the half bearing portion of the second housing. Easy to do. According to the fourth aspect of the present invention, there is no need to align the roll unit with the eccentric cartridge during assembly, and the assembly time can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a four-roll rolling mill according to an embodiment of the present invention.

FIG. 2 is a plan view of a first housing 3 with a roll unit taken out.

FIG. 3 is a bottom view of the second housing 4 with a roll unit taken out.

FIG. 4 is an exploded side view of the housing 3.

FIG. 5 is a plan view of the first housing 3 in a state where the roll units R1 and R2 are incorporated.

FIG. 6 is a partial cross-sectional plan view of the roll unit R2 assembled to the first housing 3 as viewed in the direction of the arrow VI in FIG. 2;

FIG. 7 is a view taken along line VII of FIG. 6;

FIG. 8 is an explanatory view of the assembly and disassembly of the drive roll unit R1.

FIG. 9 is an explanatory view for assembling and disassembling an idler roll unit R2.

FIG. 10 is a longitudinal sectional view of a conventional four-roll rolling mill.

FIG. 11 is an explanatory view for disassembling a roll unit in a conventional four-roll rolling mill.

[Explanation of symbols]

 Reference Signs List 1 drive roll 2 idler roll 3 first housing 4 second housing 5 inner rib 6 tie bolt 11 first half cartridge 12 second half cartridge 30 rotation drive mechanism R1 roll unit R2 roll unit

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Inui 5-9-11 Kita-Shinagawa, Shinagawa-ku, Tokyo Sumitomo Heavy Industries, Ltd. (72) Inventor Ryo Takeda 1-chome, Mizushima Kawasaki-dori, Kurashiki City, Okayama Prefecture ( No address) Inside the Kawasaki Steel Works, Mizushima Works

Claims (4)

[Claims] 1. A roll mill in which a plurality of roll units and an eccentric cartridge type rolling amount adjusting device for the roll units are mounted on a housing, wherein the housing comprises a first housing comprising a split type housing which can be freely coupled and separated. A half bearing portion is formed on a mating surface of the first housing, and a half bearing portion is formed on a mating surface of the second housing. A roll rolling mill characterized by being held between first and second housings via an eccentric cartridge in a bearing in which the half bearing portions are combined. 2. The method according to claim 1, wherein the rotation drive mechanism of the reduction amount adjusting device is a first drive mechanism.
2. The rolling mill according to claim 1, wherein the rolling mill is attached only to the housing. 3. A split-type first half in which an arbitrary roll unit among a plurality of roll units is a drive roll unit, and an eccentric cartridge constituting a reduction amount adjusting device of the drive roll unit is divided into two in a radial direction. A first cartridge and a second half cartridge. The first half cartridge is housed in a half bearing portion of the first housing.
The roll rolling mill according to claim 1, wherein the half cartridge is housed in a half bearing portion of the second housing. 4. A non-eccentric cylindrical sleeve is extrapolated around an outer periphery of a bearing inserted into a shaft portion of the roll unit, and the non-eccentric cylindrical sleeve combines the first half cartridge and the second half cartridge. 4. The rolling mill according to claim 3, wherein the rolling mill is housed in an eccentric cartridge.