JPS619906A - Rolling roll with adjustable width - Google Patents

Abstract

PURPOSE:To provide the titled roll shortening the stop time of rolling for gas adjustment by fitting a sleeve for rolling to an arbor via a medium sleeve and by making the adjustment of the sleeve gap easy with reducing the pressure of a medium sleeve annular pressure chamber and releasing the close-fitting of the sleeve. CONSTITUTION:Sleeves 5, 6 are fitted to an arbor 1 via a medium sleeve 2 and fastened by applying a pressurization 7 on an annular pressure chamber 4 of the medium sleeve 2, in a rolling roll 3 close-fitting at least more than two sleeves 5, 6 for rolling to the arbor 1. When the pressurization 7 is reduced, the sleeve becomes slidable in axial direction. The sleeve gap is adjusted by the rotation adjustment of the screw fitting mechanism which is between the sleeves 5, 6 or by operating plural pistons and cylinders mechanisms 16, 17 which are between the sleeves 5, 6. The sleeves are close-fitted with the pressurization 7 once again. The time for the stop time of rolling for gas adjustment is shortened remarkably.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a roll for a rolling mill, and more particularly to a width-adjustable horizontal roll for use in a universal mill.

As is well known in the art, a horizontal rolling mill of a universal mill, such as a horizontal rolling roll for H-shape rolling, consists of an arbor and a rolling sleeve integrally fitted with the arbor. Needless to say, in order to obtain an H section of a given specification, the size of the rolling sleeve of such horizontal rolls, ie its width and height, must be maintained within a given accuracy. The size of such rolling sleeves gradually decreases due to wear during rolling, and when the size deviates from the predetermined accuracy, the horizontal rolling rolls can no longer be used to obtain H-beams of the above specifications. I can't.

In this case, the rolling sleeve of the horizontal roll is reshaped and used as a horizontal roll of the next size. In this way, conventionally,
By successively downsizing the horizontal rolling rolls of the universal mill, we were able to handle various sizes of H-section steel. In other words, in the past, it was necessary to have a huge number of horizontal rolling rolls in order to handle H-beams of various sizes.

Problems to be Solved by the Invention As mentioned above, conventional methods require a huge number of horizontal rolling rolls of various sizes, resulting in poor roll consumption, and solving this problem has been a problem in the past. there were.

In order to solve this problem, various types of horizontal rolling rolls have been proposed in which the width can be adjusted. That is, by dividing the rolling sleeve into two sleeve parts and detachably attaching each sleeve part to the arbor, the width of the horizontal rolling roll can be adjusted by adjusting the distance between the two sleeve parts. Something like this has already been proposed. However, none of them can be put to practical use. This is because the conventionally proposed width-adjustable horizontal rolling rolls do not have sufficient roll strength (sleeve gripping force, shaft strength, etc.) to withstand rolling.

In short, in order to obtain a width-adjustable horizontal rolling roll that can be put to practical use, it is necessary to provide a sufficient gripping force between the arbor and each sleeve part, which can be obtained by burning out. It is assumed that each sleeve portion must be able to be attached and detached in response to the gripping force, but none of the width-adjustable horizontal rolling rolls that have been proposed hitherto has met this condition.

The main purpose of the present invention is to provide a horizontal rolling roll whose width can be adjusted and which can be used in practice.

Another object of the present invention is to provide a horizontal roll roll whose width can be adjusted for practical use, and whose width can be adjusted in-line.

Means for Solving the Problems In the horizontal rolling roll according to the present invention, the rolling sleeve is movably attached to the aperture, and high-pressure fluid fixing means is provided between them.
This allows the rolling sleeve to be appropriately fixed to the aperture with sufficient gripping force. The rolling sleeve is composed of at least two sleeve parts, and distance adjusting means are provided between these two sleeve parts to adjust the distance therebetween.

In one embodiment of the invention, the high-pressure fluid fixing means is arranged between the arbor and the rolling sleeve and includes an intermediate sleeve forming a groove-like pressure chamber between the arbor and the peripheral surface of the arbor; and a high-pressure fluid introducing means for introducing high-pressure fluid into the annular pressure chamber, in which case the rolling sleeve is movably attached to the intermediate sleeve. In such embodiments, such high pressure fluid introduction means may be configured as a high pressure fluid introduction passage, in which case the high pressure fluid introduction passage may be formed in the arbor or alternatively in the intermediate sleeve. .

In another embodiment of the invention, the high pressure fluid securing means closes an annular recess formed in the peripheral surface of the arbor and a peripheral opening of the annular recess, and further closes a bottom surface of the annular recess. a collar member forming an annular pressure chamber therebetween;
It comprises a high pressure fluid introducing means for introducing high pressure fluid into the annular pressure chamber, and in this case, the rolling sleeve is movably attached to the collar member. In such an embodiment, such high pressure fluid introduction means may be configured as a high pressure fluid introduction passage formed in the arbor.

In the present invention, various embodiments can be considered as specific examples of the distance adjusting means arranged between the two sleeve parts.

Firstly, in one embodiment, the spacing adjustment means may be an annular shim member disposed between the two sleeve sections.

In this case, by using shims of various thicknesses, the spacing between the two sleeve parts can be adjusted and thus the width of the horizontal rolling roll can be adjusted. In addition,
When using such an annular shim member, there is a drawback that the width adjustment of the horizontal rolling roll must be performed off-line, but the objective is to provide a horizontal rolling roll whose width can be adjusted for practical use. is achieved.

Another aspect of the spacing adjustment means capable of in-line width adjustment of the horizontal rolling rolls includes an annular male and female threaded member disposed between two sleeve portions;
or a piston placed between two sleeve parts.
A cylinder device may be mentioned.

When a male threaded member and a female threaded member are used as the spacing adjustment means, the spacing between the male threaded member and the female threaded member is adjusted by rotating the male threaded member and the female threaded member relative to each other. In such a spacing adjustment means, the spacing between the two sleeve portions is adjusted by relatively moving them in the axial direction, so the width adjustment of the horizontal rolling rolls can be performed in-line. can.

If a piston-cylinder arrangement is used as the spacing adjustment means, the piston of the piston-cylinder arrangement is fixed to one of the two sleeve parts, and the cylinder of the piston-cylinder arrangement is fixed to the other of the two sleeve parts. It will be clear that by operating such a piston-cylinder arrangement, the width adjustment of the horizontal rolling rolls can be carried out in-line. In addition, when a plurality of piston-cylinder devices are provided, it goes without saying that it is preferable to arrange these piston-cylinder devices at equal intervals in the circumferential direction of the arbor.

According to the present invention, in order to adjust the width of the horizontal rolling roll, two
After adjusting the spacing between the two sleeve parts with spacing adjustment means, means for introducing high pressure fluid into the annular pressure chamber between the intermediate sleeve and the circumferential surface of the arbor or between the collar member and the circumferential recess of the arbor. Therefore, high pressure fluid is introduced.

By inflating the intermediate sleeve, a gap between the intermediate sleeve and the two sleeve parts or between the collar member and the two sleeve parts can be formed.
A strong gripping force is obtained between the two sleeve parts. It will be clear to those skilled in the art that the gripping forces obtained in this manner can be comparable to the full gripping forces obtained with burnout.

Therefore, the horizontal rolling roll according to the present invention can satisfy the above-mentioned conditions as a width-adjustable horizontal rolling roll that can be put to practical use.

Furthermore, according to the present invention, when a male threaded member, a female threaded member, or a piston-cylinder device is used as the interval adjustment means, width adjustment of a horizontal rolling roll whose width can be adjusted in practical use is possible in-line. It will be done.

Embodiments Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Referring to FIG. 1, a portion or central portion of a horizontal mill roll according to the invention is illustrated. The horizontal rolling roll is composed of an arbor 1, an intermediate sleeve 2 and a rolling sleeve 3. The intermediate sleeve 2 is attached to the arbor 1 and forms an annular pressure chamber 4 between it and the peripheral surface of the arbor 1 . The rolling sleeve 3 is divided into two sleeve parts 5 and 6, which are movably attached to the intermediate sleeve 2.

As is clear from FIG. 1, the arbor 1 is formed with high pressure fluid introducing means for introducing high pressure fluid into the annular pressure chamber 4, that is, a high pressure fluid introduction passage 7. When high pressure fluid is introduced into the annular pressure chamber by the high pressure fluid introduction passage 7,
The intermediate sleeve 2 expands, so that the sleeve parts 5 and 6 are secured to the intermediate sleeve 2 with sufficient gripping force. In short, in the embodiment shown in FIG. 1, the high-pressure fluid fixing means for fixing the rolling sleeve 3 to the arbor 1 with sufficient gripping force is composed of the intermediate sleeve 2 and the high-pressure fluid introduction passage 7. will be done.

In the embodiment shown in FIG. 1, a shim member 8 is used as a spacing adjustment means for adjusting the spacing between the sleeve portions 5 and 6, and such shim member 8 is comprised of an annular thickness adjustment plate. It has become. When each sleeve part 5.6 is movable relative to the intermediate sleeve 2, i.e. before high pressure fluid is introduced into the annular pressure chamber 4, the shim member 8
By interposing the sleeve parts 5 and 6, the spacing between them is adjusted. After such an adjustment has been made, when high pressure fluid is introduced into the annular pressure chamber 4, the sleeve parts 5 and 6 are fixed relative to the intermediate sleeve 2, as described above, and the width adjustment of the horizontal rolling rolls is performed. It will be done. In addition, when using the shim member 8 as shown in FIG. 1, the width adjustment of the horizontal rolling roll must be performed off-line.

Another embodiment according to the invention is illustrated in FIG.
The embodiment shown in FIG. 2 is similar to the embodiment shown in FIG. 1, except that an annular male threaded member 9 and a female threaded member 10 are used as the distance adjusting means. In FIG. 2, the same reference numerals are used for similar elements shown in FIG. 1.

In FIG. 2, the externally threaded member 9 and the internally threaded member 10 are in mesh with each other as shown, in this case when the sleeve part 5.6 is movable relative to the intermediate sleeve 2, the externally threaded member 9 and the internally threaded member 14 It will be clear that by rotating them relative to each other, the spacing therebetween can be adjusted. Therefore, according to the embodiment of FIG.
There is an advantage that the width adjustment of the horizontal rolling rolls can be performed in-line.

When adjusting the width of horizontal rolling rolls in-line,
As shown in FIG. 3, a pair of vertical rolls 11 of a universal mill can be used to accurately adjust the width of the horizontal rolls.

Needless to say, since the distance between the pair of vertical rolling rolls 11 of the universal mill is precisely controlled, such a function can be utilized when adjusting the width of such horizontal rolling rolls. can.

Further, when adjusting the width of the horizontal rolling roll off-line, a positioning and adjusting facility as shown in FIG. 4 can be used. Such positioning adjustment equipment includes a pair of pillar members 12, a pair of protrusions 13 provided on the inner surfaces of each of the pair of pillar members 12, and a pair of protrusions 13 extending telescopically from the inner surfaces of each of the pair of pillar members 12. It consists of a position adjustment arm 14.

As shown in the figure, the horizontal rolling roll whose width is to be adjusted is supported between a pair of pillar members 12 by their protrusions 13.

In this case, it will be clear that by setting the pair of position adjustment arms 14 at predetermined positions and then using the horizontal roll spacing adjustment means, the width of the horizontal rolls can be adjusted accurately. It should be noted that the positioning and adjusting equipment shown in FIG. 4 can be used for offline width adjustment of the horizontal rolling roll explained in FIG. 1, and also for offline width adjustment of the horizontal rolling roll explained next. Needless to say.

FIG. 5 shows a further embodiment of the invention, the embodiment of which is different from that of FIG. 5, except that a piston-cylinder arrangement 15 is used as the spacing adjustment means. The example is similar to the embodiment of FIG. In FIG. 5, the same reference numerals are used for similar elements shown in FIG.

In FIG. 5, the piston-cylinder arrangement 15 consists of a piston 16 secured to the sleeve part 5 and a cylinder 17 secured to the sleeve part 6.

In this case, when each sleeve part 5.6 is movable relative to the intermediate sleeve 2, the distance between the sleeve parts 5 and 6 can be adjusted by operating the piston-cylinder arrangement 15 in the usual manner. That should be obvious. Therefore, the embodiment of FIG. 5 has the advantage that the width adjustment of the horizontal rolling rolls can be performed in-line. It goes without saying that such in-line width adjustment can be performed using a pair of vertical rolling rolls of a universal mill as illustrated in FIG. It goes without saying that when a plurality of piston-cylinder devices 15 are provided, it is preferable to arrange these piston-cylinder devices around the intermediate sleeve 2 at equal intervals.

FIG. 6 shows yet another embodiment of the invention, in which high pressure fluid is used to secure the rolling sleeve to the arbor with sufficient gripping force. High pressure fluid fixing means will be incorporated into the arbor 1'. That is, in the case of this embodiment, such high pressure fluid fixing means closes the annular recess 18 formed in the peripheral surface of the arbor 1' and the peripheral opening of the annular recess 18, and also closes the bottom surface of the annular recess 18. It consists of a collar member 19 forming an annular pressure chamber therebetween, and high pressure fluid introducing means for introducing high pressure fluid into the annular pressure chamber, in this case as shown in FIGS. 1, 2 and 5. A split-type rolling sleeve with interval adjustment means is attached to the collar member 19.
It will be movably mounted on the

In FIG. 6, the collar member 19 is welded to both side edges of the annular recess 18 and forms the peripheral surface of the arbor 1''. Also, as is clear from FIG. 6, in this embodiment: The high pressure fluid introduction means is configured as a high pressure fluid introduction passage 20 formed in the arbor.
As shown in the figure, it is preferable to arrange a ring-shaped spacer 21 within the annular recess 18. In this case, the spacer 21
It goes without saying that the peripheral surface of the collar member 19 is not fixed to the inner surface of the collar member 19.

In the embodiment shown in FIG. 6, after the interval between the split rolling sleeves as described above is set to a predetermined distance, high pressure fluid is introduced into the annular pressure chamber through the high pressure fluid introduction passage 20. It will be apparent that the collar member 19 expands and such a split rolling sleeve is secured to the collar member 19 with sufficient gripping force.

Effects of the Invention As is clear from the above description, according to the present invention, a practically usable horizontal rolling roll whose width can be adjusted is provided, so there is no need to possess a huge number of horizontal rolling rolls of all sizes. Therefore, the roll consumption rate can be greatly improved.

Further, in the present invention, when a male threaded member and a female threaded member or a piston-cylinder device are used as the interval adjustment means, the width adjustment of the horizontal rolling roll can be performed in-line. This makes it possible to shorten the downtime of the rolling line.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing one embodiment of the horizontal rolling roll according to the present invention, FIG. 2 is a schematic cross-sectional view showing another embodiment of the horizontal rolling roll according to the present invention, and FIG. 3 is a schematic cross-sectional view showing another embodiment of the horizontal rolling roll according to the present invention. FIG. 4 is an explanatory diagram for explaining that the vertical rolling roll of a universal mill can be used when adjusting the width of a horizontal rolling roll in-line according to the present invention. FIG. FIG. 5 is a schematic cross-section showing still another embodiment of the horizontal rolling roll according to the present invention, and FIG. 6 is a schematic cross-sectional view showing still another embodiment of the horizontal rolling roll according to the present invention. FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention, showing only the arbor in which the high-pressure fluid fixing means is incorporated; [Explanation of main reference numbers] 1 Arbor 11 Arbor 2 Intermediate sleeve 3 Rolling sleeve 4 M-shaped pressure chamber 5 Sleeve portion 6 Sleeve portion 7 High-pressure fluid introduction passage 8 Shim member 9 Male thread member 10 Female thread member 15 Piston-cylinder device 16 Piston 17 Cylinder 18 Annular recess 19 Collar member 20 High pressure fluid introduction passage

Claims (14)

[Claims] (1) A horizontal rolling roll used in a universal mill, comprising: an arbor; a rolling sleeve movably attached to the arbor; and a sufficient grasp of the rolling sleeve relative to the arbor. high-pressure fluid locking means between the arbor and the rolling sleeve for force locking, the rolling sleeve comprising at least two sleeve sections; A horizontal rolling roll, characterized in that it comprises spacing adjustment means provided between the two sleeve sections for adjusting the spacing between the sections. (2) an intermediate sleeve in which the high-pressure fluid fixing means is disposed between the arbor and the rolling sleeve and forms an annular pressure chamber between the arbor and the peripheral surface of the arbor;
Claim 1, further comprising a high-pressure fluid introducing means for introducing high-pressure fluid into the annular pressure chamber, wherein the rolling sleeve is movably attached to the intermediate sleeve. Horizontal rolling roll. (3) The horizontal rolling roll according to claim (2), wherein the high-pressure fluid introduction means is a high-pressure fluid introduction passage formed in the arbor. (4) The horizontal rolling roll according to claim (2), wherein the high-pressure fluid introduction means is a high-pressure fluid introduction passage formed in the intermediate sleeve. (5) According to any one of claims (1) to (4), wherein the distance adjusting means comprises an annular shim member disposed between the two sleeve parts. horizontal rolling rolls. (6) The distance adjusting means includes an annular male threaded member and an annular female threaded member disposed between the two sleeve parts, and by relatively rotating the male threaded member and the female threaded member, the distance between the two sleeve parts is adjusted. Claim 1, characterized in that the male threaded member and the female threaded member mesh with each other so that the spacing is adjusted.
The horizontal rolling roll according to any one of items 1) to 4. (7) the spacing adjusting means comprises at least one piston-cylinder arrangement arranged between the two sleeve parts, the piston of the piston-cylinder arrangement being fixed to one of the two sleeve parts;
Claim (1) characterized in that a cylinder of a cylinder device is fixed to the other of the two sleeve portions, and the distance between the two sleeve portions is adjusted by actuation of the piston-cylinder device. Section to (4)
The horizontal rolling roll according to any of paragraphs. (8) The horizontal rolling roll according to claim (6), wherein a plurality of the piston-cylinder devices are arranged at equal intervals around the intermediate sleeve. (9) The high-pressure fluid fixing means forms an annular pressure chamber between an annular recess formed on the peripheral surface of the arbor and a collar that closes a peripheral opening of the annular recess and also forms an annular pressure chamber between the bottom surface of the annular recess. and a high-pressure fluid introducing means for introducing high-pressure fluid into the annular pressure chamber, wherein the rolling sleeve is movably attached to the collar member. The horizontal rolling roll described in section. (10) The horizontal rolling roll according to claim (9), wherein the high-pressure fluid introduction means is a high-pressure fluid introduction passage formed in the arbor. (11) According to either claim (9) or claim (10), wherein the distance adjusting means comprises an annular shim member disposed between the two sleeve portions. horizontal rolling rolls. (12) The distance adjusting means includes an annular male threaded member and a female threaded member disposed between the two sleeve parts, and the distance between the two sleeve parts is adjusted by relatively rotating the male threaded member and the female threaded member. Horizontal rolling according to any one of claims (9) and (10), characterized in that the male threaded member and the female threaded member are engaged with each other so that the interval between the two is adjusted. roll. (13) The spacing adjusting means comprises at least one piston-cylinder device arranged between the two sleeve parts, the piston of the piston-cylinder device being fixed to one of the two sleeve parts, and the piston-cylinder device being fixed to one of the two sleeve parts; Claim (9) characterized in that a cylinder of a cylinder device is fixed to the other of the two sleeve portions, and the distance between the two sleeve portions is adjusted by actuation of the piston-cylinder device. Item or item (
10) The horizontal rolling roll according to any one of items 10). (14) The horizontal rolling roll according to claim (13), wherein a plurality of the piston-cylinder devices are arranged at equal intervals around the intermediate sleeve.