JPH02284710A - Width variable rolling roll and assembling and disassembling device for its roll - Google Patents

Abstract

PURPOSE:To change a rolling roll width through a remote manipulation or to perform assembly or disassembly at a short time by arranging a variable width means to adjust an interval between an operating side roll or a driving side roll. CONSTITUTION:When a driving source 17 of a variable-width means connected to the shaft end 9a of the rolling roll shaft body 9 is actuated, a nut 19 is rotated through a clutch 18, a slide block 15 engaging with this nut moves forward and backward in the axial direction with the roll shaft body 9 and, consequently, a roll interval between the driving side roll LR and the operating side roll RR or the rolling roll width to roll down the material 1 to be rolled can changed easily by the remote manipulation. When the rolling roll is disassembled from the housing of the rolling mill, important parts are supported and a gear T set to the outer surface of the case of the variable width means 13 is engaged with the gear of an assembling and disassembling device and rotated, the variable width means 13 can be removed from the rolling roll. The order should be reversed for the assembly.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is particularly useful for horizontal rolls of universal rolling mills used when rolling H-section steel having webs and flanges. The present invention relates to a roll with variable roll width and a device useful for disassembling and assembling the roll.

The explanation will be given below by taking H-beam steel as an example.

(Prior Art) For rolling H-section steel, it is common to use a so-called universal rolling mill, which has a mechanism in which a pair of upper and lower horizontal rolls and a pair of left and right vertical rolls are incorporated into the same stand.

Conventionally, when manufacturing H-section steel using such a rolling mill, the flange width of the H-section steel can be changed freely within the range as long as it is smaller than the roll width of the vertical roll, but the web height of the section steel product (II) Usually, the roll width of the horizontal roll is W, and the flange thickness is W.

When )1=W-1-2tl Therefore, there were the following problems.

1) Since the inner surface of the flange of the rolled material is rolled down and rolled by the roll end face of the horizontal roll, there is severe wear in that area, and even within the same chance, as the amount of rolling increases, the web height becomes insufficient. It was not possible to stably obtain a shaped steel product of a constant size from the above, and in order to avoid this problem, the horizontal rolls had to be replaced frequently.

2) In the universal rolling mill of Ill[, only one size of 10 mm can be selected for the web height of the section steel.

3) There are several types of so-called H-beam steel with a constant outer rectangle that have a constant web height and different flange thicknesses even if they have the same designation size, so change the roll width of the horizontal roll as appropriate to achieve the desired flange thickness. However, in order to deal with this, frequent reshuffling of rolls is required, which may impede productivity or increase the number of man-hours required for reshuffling rolls.
In addition to being lost, many roles must be retained.

4) In order to improve the dimensional accuracy of shaped steel products, it is necessary to perform frequent processing to match the roll width of the horizontal roll to the inner rectangular dimension of the shape field, which significantly increases the roll consumption rate.

As a prior art related to this, for example, Japanese Patent Application Laid-Open No. 612624
No. 07 and No. 61 to No. 169105 propose an attempt to cope with roll wear by inserting a spacer for adjusting the roll width of a horizontal roll between a pair of sleeve rolls (see FIG. 9).

However, this technique has disadvantages in that the horizontal roll must be removed from the stand off-line, which inevitably reduces productivity and increases the number of disassembly and assembly steps.

In addition, Japanese Patent Application Laid-open No. 61-262407 discloses a width-adjusting rolling roll having a mechanism in which a sleeve roll is moved from side to side around the center of the roll using a combination of screws and NANDs. 61
Japanese Patent No. 172,605 discloses a technique for freely changing the web height of a section steel using oblique rolls.

However, all of these techniques require enormous equipment costs and complex device structures, requiring a large amount of time and man-hours to disassemble and assemble the devices.

(Problems to be Solved by the Invention) It is an object of the present invention to propose a rolling roll with a relatively simple roll width adjustment mechanism that can solve the conventional problems as described above, and a disassembly and assembly device that can easily disassemble and assemble this rolling roll. This is the purpose of this invention.

(Means for Solving the Problems) The present invention provides a pair of left and right sleeves that fixedly hold the operation side and drive side rolls that control the rolling of the rolled material, respectively, and have a through hole in the center that opens in the roll axis direction. One of the sleeve rolls is rotatably cantilevered through a bearing fixed to a chock on the operating side, and the other sleeve roll is freely rotatable via a bearing whose one end is fixed to the chock on the driving side. The other end is fitted into the through hole of the sleeve roll supported on a cantilever and fixed to the spline-coupled roll shaft body, and the roll shaft body is attached to the operation side shaft end of the roll shaft body in the axial direction. A variable width means is provided for adjusting the spacing between the operation side and drive side rolls by sliding along the sleeve roll, and the width variable means is screw-fitted to a chock of a bearing that cantilevers the sleeve roll, A variable width roll is characterized in that a case incorporating a width variable means has a gear portion along the outer surface of the case, and the present invention also provides a device for disassembling and assembling a variable width roll having the above structure. A plurality of gears having a drive source that engages with a gear portion of the case containing the width variable means and rolls the width variable means together with the case, and a plurality of gears holding the case containing the width variable means on the top surface. a first frame including a support roller and having a guide on its lower surface; a second frame including a roller that engages with the guide to move the first frame along the axial direction of the roll shaft body; Elevating means that engages with the back surface of the second frame to move the second frame and the first frame up and down, and moves the second frame along with the first frame in the axial direction of the roll shaft body. This is a variable width roll disassembly and assembly device comprising a third frame and a roll holder that engages with sleeve rolls that fixedly hold rolls on the operation side and drive side, respectively, and fixes and holds the sleeve roll main body.

Figures 1 (a), (b), and (C) show an example in which the variable width roll according to the present invention is incorporated as a horizontal roll in a universal rolling mill, and number 1 in the figure indicates an H-shaped steel product having a web and a flange. A rolled material, 2a,
2b is a vertical roll that rolls down the outer surface of the flange of the material to be rolled 1; 3a and 3b are chocks that pivotally support the vertical rolls 2a and 2b, respectively; and 4a and 4b have one end connected to a roll drive device that transmits the torque necessary for rolling. It is a pair of upper and lower horizontal rolls with the other end connected to a width variable mechanism.

Hereinafter, for convenience of explaining the above-mentioned horizontal rolls, the left side in FIG. 1 will be referred to as the drive side connected to the drive device, and the right side will be referred to as the operation side. Also, since the structure of the upper and lower horizontal rolls is exactly the same, only the upper roll 4a will be described. do.

In the sleeve roll 5, which has a two-part structure including a drive side roll L that controls the rolling of the web and the inner surface of the flange of the material to be rolled 1, and an operation side roll RR, the operation side roll R,
The sleeve roll 5a, which is fixedly held, has a through hole in its center, and is fixed to the chock 6 of the rolling mill with a bearing 7 (for radial load) and a bearing 8 (for thrust load).
It is rotatably supported in a cantilever manner via the .

The sleeve roll 5b that fixedly holds the drive side roll L is provided with a through hole h' in the center thereof, and the roll shaft body 9 is provided with a through hole h'.
It is shrink-fitted.

The shaft end on the drive side of the roll shaft body 9 is rotatably supported by a chock 12 fitted to the housing 11 via a bearing 10, while the other end is a sleeve that fixedly holds the operating roll R. It fits into the through hole of the roll 5a, and the groove a formed on the outer surface of the roll shaft body 9 corresponds to the groove a formed on the inner surface of the through hole, as shown in FIG. 1(b), as shown in FIG. It is splined by a toothed tooth.

Here, a sleeve roll 5a holds the operation side roll RR fixedly by the operation of a drive device connected to the roll shaft main body 9.
rotates together with the drive-side roll L to roll the material 1 to be rolled.

In addition, the number 13 in the same figure is 0 copies (
(See FIG. 2), the width variable means 13 is compressed and coupled in the width variable means 13, the main part of which is shown in FIG. 1(C).
As shown in FIG. 2, the support case S has a gear part around the outer surface thereof that engages with a disassembly and assembly device to be described later, and an opening d8 that engages with the shaft end 9a of the roll shaft main body 9 on the inside thereof.
A slide block 15 that holds the arbor 14 rotatably through bearings e (receiving the thrust load of the roll shaft body) and r (for radial load) and a nut fixed to the support case S. Storage box 1
6. A nant 19 is rotatably supported by a drive source 17 such as an electric motor with a speed reducer via a clutch 18 in the storage box 16 and compressed into the slide block 15.
I can draw one.

Although not shown, the arbor 14 and the shaft end 9a that engages with it are spline-coupled so that they are not constrained in the roll axis direction.

As the nut 19 rotates, the slide block 15 slides on the inner surface of the support case S and moves along the axial direction together with the roll shaft body 9.

Further, 20 is a bottle that prevents the rotation of the slider block 15, 21 is a sleeve, and 22 is a hydraulic chamber. Although not shown, the hydraulic chamber 22 is connected to a pressure oil supply/discharge circuit and extends in the axial direction of the roll shaft body 9. This helps prevent rattling and elastic distortion in the material.

Next, FIGS. 3(a) and 3(b) show a disassembling and assembling apparatus according to the present invention which is suitable for disassembling and assembling a rolling roll having the configuration shown in FIG. This frame 23 holds on its upper surface a gear 24 with a drive source that rotates the support case S by engaging with a gear part provided on the surface of the support case S of the rolling roll, and the support case S. A support roller 25 with a position adjustment function (push bolt, etc.) is provided with a fly 1 and a guy 1'26 on its lower surface.

Here, the details of the gear 24 are shown in FIGS. 4(a) and 4(b).
As shown in FIG. 2, the hydraulic cylinder 24 supports the main body in a swingable manner at its center and is fixedly held at one end of the link lever 24a, and the other end of the link lever 24a is fixed to the base 27.
By configuring the gear 24 to be connected to b, it is possible to finely adjust the amount of vertical movement of the gear 24.

Number 28 is the second frame, and this second frame 28
has two rollers that engage the frame guide 26.

Further, the number 30 is a third frame, and this third frame 30 is equipped with a lifting means 31 for vertically moving the first frame 1.23 and the second frame 28, and also includes a lifting means 31 for vertically moving the first frame 1.23 and the second frame 28. It has a moving means for moving the roll shaft main body 9 along the axial direction together with the first frame 23.

Here, the elevating means 31 includes a screw rod g having a right-handed thread and a left-handed thread, one end of which is connected to a drive source, and a tapered slide seam 1 screwed into the right-handed threaded portion and the left-handed threaded portion of this rod g, respectively. -i, i', and slide shoe guides j, i, i' that fit into these slide shoes i, i' and guide their forward and backward movement, and by rotating the screw rod g with a drive source k such as an electric motor. The slide shoes i and i' are moved toward and away from each other to move the second frame 28 to the first frame 28.
It moves up and down together with the frame 23.

FIG. 5 shows a cross section of the main part of the elevating means 31.

Note that gl shown in FIG. 5 is a bearing that rotatably supports the screw shaft g and prevents it from moving in the axial direction.

Further, as a specific means for moving the third frame 30, as shown in FIG. It is possible to use one in which the linear guide 0 of the frame 30 is engaged with the guide shoe p of the base 27 by screw-fitting the block n.

Further, reference numeral 32 denotes a roll support frame, and this support frame 32 engages with the sleeve roll 5 that fixes and holds the drive side and operation side rolls LR and RR, respectively, and supports the main body of the sleeve roll 5.

In order to firmly fix the sleeve roll 5 to the roll support frame 32, a hydraulic cylinder 32b having a draft-shaped block 32a at the operating end is provided on the side wall of the frame 32. The model block 32a is moved along a guide 32e provided on the main body of the frame and inserted between the frame 32 and the roll chunk 6.12.

The side view is shown in FIG. 7 as a cross section taken along line CC in FIG. 3(a) above.

(Function) In the rolling of 11-shaped steel, the flange width can be freely changed as long as it is within the roll width of the vertical roll, as shown in Figure 8, but the web height 1 (is the flange thickness 1.
Since it is determined by

The rolling roll according to the present invention has a shaft end 9a of the roll shaft body 9.
When the drive source 17 of the width variable means connected to the width variable means is activated, the nut 19 connected thereto via the clutch 18 rotates.
Furthermore, since the slide block 15 engaged with this moves forward and backward in the axial direction together with the roll shaft main body 9, the distance between the rolls of the drive-side and operation-side rolls, that is, the distance between the rolls of the rolling rolls that governs the rolling of the material 1 to be rolled, is The roll width can be changed easily and quickly.

Note that when changing the roll width, the pressure oil supply/discharge system is kept open so that no oil pressure is applied to the hydraulic chamber 22, and when the roll width setting is completed, pressure oil is supplied to maintain the predetermined pressure. to hold.

Next, regarding the disassembly of the above-mentioned rolling rolls, first, the variable width rolls with roll chocks removed from the housing of the rolling mill are moved to the roll holder 3 by an overhead crane or the like.
The rolling roll is placed on the holder 32, and the rolling roll is firmly fixed to the holder 32 with a wedge-shaped block 32a.

Then, after adjusting the front and rear - 1 - lower positions of the third frame 30 and second frame 1.28 of the disassembly and assembly device, the gear 2
4 is engaged with a gear part provided on the boat nose S, and the gear 24 is caused to roll by a drive source.

Since the support case S is only threadedly connected by the roll chock 6 of the rolling mill, it can be easily and quickly separated from the rolling mill 17 by the width variable means by rotating it a predetermined number of times. .

When rotating the support case S, the threaded connection is released and the support case S moves toward the non-drive side. The first frame 23 is designed to follow this movement, but if there is a misalignment between the gear 24 and the gear part molecules, the first frame 23 will move to a position where it contacts the support roller 25 of the boat case S. It is desirable to provide grooves q as shown in FIG. 3(a).

In addition, when assembling the rolling roll, the reverse procedure of the disassembly procedure described above may be followed.

(Effects of the Invention) Thus, according to the present invention: 1) The roll width of the rolling roll can be changed online and remotely.

2) Even if roll wear occurs, there is no need to rearrange the rolls, and products of a constant size or products of different sizes can be stably manufactured by accurately changing the roll width.

3) Since the width variable means provided on the rolling roll is removable, it can be applied to other rolling rolls with some modification, and the equipment investment involved can be significantly reduced.

4) Disassembly and assembly of the rolling rolls can be done in a short time, which greatly contributes to reducing man-hours and saving labor.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIGS. 1(a), (b, and C) are explanatory diagrams of the configuration of a rolling roll according to the present invention. FIG. 2 is an enlarged cross-sectional view of the main parts of a rolling roll according to the present invention. ) (b) is an explanatory diagram of the configuration of the disassembly and assembly device according to the present invention. Figure 4 (a) (t-i) is an explanatory diagram of the configuration of the gear installed in the first frame. Figure 5 is an explanatory diagram of the configuration of the gear installed in the second frame. An explanatory diagram of the configuration of the lifting means. Figure 6 is an enlarged view of the main parts of the third frame. Figure 7 is a side view of the roll holder. Figure 8 is an explanatory diagram of the rolling procedure for FI section steel. FIG. 2 is a schematic diagram of a variable width rolling roll. 1... Material to be rolled 2a, 2b... Vertical rolls 3a, 3b... Roll chocks 4a, 4b... Horizontal 1]-ru 5... Sleeve rolls 5a, 5b... Drive side roll, operation Side roll 6...Roll chock on operating side 7.8...Bearing on operating side 9...Roll shaft body 9a
...Shaft end 10...Drive side bearing 11.
...Housing 12...Drive side roll chock 13...Width variable means 14...Arm 15...
...Slide block 1G...Nand's storage box 17.
... Drive source 18 ... Furanochie 9 ...
Nala!・20...Bin 21...Sleeve 22...Hydraulic chamber 23・
...First frame 24...Gear 24a...Link lever 24b...Hydraulic cylinder 25...
Support roller 26...Frame guide 27...
・Base 28...Second frame 29...Roller
30...Third frame 31...Elevating means a...Groove b...Teeth C...Screw connection portion d...Opening e, f...Bearing
g...Screw rod h, h'...Through hole
i, i'...Slide shoe j...Slide shoe guide, ff...Drive source m...Screw rod n for third frame transfer tlJ
...Block 0...Linear guide p.
...Guide shoe q...Conductor 4 (a) (b) Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 4 and Fig. 9

Claims (1)

[Scope of Claims] 1. A pair of left and right sleeve rolls each fixedly holding an operation side roll and a drive side roll that controls the rolling of the material to be rolled, each having a through hole opening in the axial direction of the rolls in the center; One side of the sleeve roll is rotatably supported on a cantilever via a bearing fixed to the operating chock.
One end of the other sleeve roll is rotatably supported via a bearing fixed to the driving chock, and the other end is fixed to the splined roll shaft body by fitting into the through hole of the cantilevered sleeve roll. A width variable means is disposed at the operating side shaft end of the roll shaft main body to adjust the arrangement interval of the operating side and drive side rolls by sliding the roll shaft main body along the axial direction, and this width variable means 1. A variable-width rolling roll, characterized in that the means is screw-fitted to a chock of a bearing that cantilever-supports the sleeve roll, and a gear portion is provided around the outer surface of a case having the variable-width means. 2. A device for disassembling and assembling a variable width rolling roll according to claim 1, which engages a gear portion of a case having a width variable means on its upper surface and causes the width variable means to roll together with the case. A first frame includes a plurality of support rollers that hold the gear of the driving moped and a case having the width variable means, and has a guide on its lower surface;
a second frame including a roller that moves the frame along the axial direction of the roll shaft body; and a lifting means that engages with the back surface of the second frame to move the second frame and the first frame up and down. and the second frame with the first
It consists of a third frame that moves along the axial direction of the roll shaft body together with the frame, and a roll holder that engages with the sleeve roll that fixedly holds the operating side and drive side rolls and holds the sleeve roll body fixedly. Disassembly and assembly equipment for variable width rolls.