JP2556784B2 - Grinding powder removal device for online roll grinder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding powder removing device for an online roll grinder that grinds a rolling roll during rolling, and efficiently removes grinding powder generated during grinding by using a cooling liquid for the rolling roll. However, it is possible to prevent adhesion to the material to be rolled.

[0002]

2. Description of the Related Art In hot rolling equipment, so-called schedule-free rolling, which alleviates restrictions on rolling schedules such as steel type and strip width, is being carried out to improve productivity and save energy. One of the problems that must be solved in order to perform such schedule-free rolling is smoothing of a worn portion of a work roll due to rolling, and a device for grinding a rolling roll during rolling has been conventionally developed. ing.

As one of the devices for grinding the roll being rolled, there is a device for pressing a grinding belt wound on a reel against the outer circumference of the roll and running it in the axial direction of the roll. By using such a grinding belt, not only the non-passing portion of the rolling roll but also the passing portion can be ground,
It is possible to always maintain proper roll conditions.

However, in the device using the grinding belt,
When the grinding belt runs, meandering occurs, or the grinding belt is apt to break due to the pressing force, and it is complicated and expensive to replace the grinding belt wound on the reel. Therefore, a device using a grindstone (on-line roll grinder) has been developed as a roll grinding device that solves these drawbacks, and there is no meandering problem, and the cost can be reduced by replacing only the grindstone portion.

[0005]

However, in the device using the grindstone, grinding powder of the grindstone or the roll is generated along with the polishing of the roll, and if the grinding powder remains attached to the grindstone,
There is a problem that the grinding efficiency is lowered due to the clogging and that the quality of the product is deteriorated if the grinding powder is left attached to the roll or the strip (rolled material).

The present invention solves the problems of the prior art, and efficiently removes the grinding powder to prevent the powder from adhering to the material to be rolled and to obtain a high-quality product of an online roll grinder. An object is to provide a grinding powder removing device.

[0007]

The grinding powder removing device for an online roll grinder according to the present invention is intended for roll grinding on a supporting frame which is movable in the axial direction of a rolling roll cooled by a cooling liquid and is capable of approaching and separating from the outer peripheral surface. In an online roll grinder equipped with a grindstone, the support frame is provided with a grindstone nozzle for cleaning the grindstone surface by spraying toward the outer circumference of the grindstone, and the support frame has an outer peripheral surface of the rolling roll to be ground. Is provided with a roll nozzle for injecting the grinding powder obliquely in the axial direction thereof to move and remove the grinding powder to the end of the rolling roll.

[0008]

According to the grinding powder removing device of the online roll grinder of the present invention, a grindstone nozzle is provided on a support frame on which the grindstone is supported, and the grindstone nozzle jets the grindstone nozzle substantially vertically toward the outer circumference of the grindstone. Is kept clean, which prevents clogging of the grindstone.

Further, the support frame is provided with a roll nozzle, and the roll nozzle is used to inject obliquely in the axial direction of the outer periphery of the rolling roll (tilt not perpendicular to the outer peripheral surface of the rolling roll). The grinding powder is moved so as to be pushed to the end of the roll, and a large amount of cooling liquid of the rolling roll is used to prevent the grinding powder from adhering to the roll surface or the strip.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 10 are drawings showing an embodiment of a grinding powder removing device of an online roll grinder of the present invention, FIG. 1 is a front view of a main part, FIG. 2 is a plan view of the main part,
FIG. 3 is a bottom view of a main part, and FIGS. 4 to 10 are explanatory views of an online roll grinder to which the present invention is applied.

First, the online roll grinder 20 in which the grinding dust removing device 10 of the present invention is installed will be described. As shown in the overall configuration of FIG. 4, of the rolling rolls 2 and the reinforcing rolls 3 constituting the rolling mill 1. During rolling, the rolling roll 2 that is in direct contact with the material to be rolled 4 is always ground with a grindstone, and is installed in the rolling mill housing 5 (in FIG. 4, only the device for the upper rolling roll is shown. There is).

A guide beam 21 having a rectangular cross section is fixedly supported on the rolling mill housing 5 in parallel with the rolling rolls 2, and a rack 22 is attached along the upper surface of the guide beam 21 in parallel with the rolling rolls 2. A movable frame 23 having a vertically divided structure is mounted on the guide beam 21 via a liner so as to surround the periphery thereof, and can be moved in the axial direction of the rolling roll 2. Notched.

Further, a moving motor 25 is mounted on the moving frame 23 via a bracket 24, and a pinion 26 at the tip end is engaged with the rack 22.
By driving the moving motor 25, the pinion 26 rolls on the rack 22, and the moving frame 23 can be moved along the guide beam 21 in the axial direction of the rolling roll 2.

Below the moving frame 23, as shown in FIG. 4, a pair of guide members 28 having a U-shaped cross section are arranged via brackets 27 on both axial sides of the rolling roll 2 so as to face each other. At the same time, they are mounted in parallel so as to extend from the moving frame 23 toward the axial center of the rolling roll 2 obliquely from above to below.

As shown in FIG.
As shown in the figure, the fixing plate 29 is attached, and at the tip,
As shown in FIGS. 4 to 6, the movable plate 30 is arranged so as to be able to reciprocate along the guide member 28. The fixed plate 29 and the moving plate 30 are connected to rods of a pair of reciprocating drive cylinders 33 each formed by connecting the rear end and the front end of two fluid pressure cylinders 31 and 32.
0 can be advanced toward the rolling roll 2 or retracted into the guide member 28, and an intermediate plate 35 (see FIG. 7) fixed by a stopper 34 provided at an intermediate portion of the guide member 28. ) Supports the reciprocating drive cylinder 33.

A U-shaped support frame 36 for supporting the grinder mechanism is arranged in front of the moving plate 30, and two guide rods 37 fixed to the supporting frame 36 are attached to the moving plate 30 and a sleeve 38. And is biased by the coil spring 39 so as to be pulled toward the moving plate 30 side, and is supported so as to reciprocate to some extent against the coil spring 39.

As shown in FIG. 6, the tip of a guide pipe 40 disposed in the guide member 28 is fixed to the center of the moving plate 30, and the tip of the guide pipe 40 reciprocates. A push rod 41, which is mounted so as to be possible, is connected to the support frame 36. A compression coil spring 42 is attached to a base end portion of the pressing rod 41 inside the guide pipe 40 and is supported by a spring seat 43.
It is arranged so that the load cell 44 abuts on the rear surface,
It is supported by a load cell support member 46 at the rod tip of a pressing force adjusting cylinder 45 fixed to the rear end of the guide pipe 40.

Therefore, the support frame 36 is reciprocally movable in the axial direction of the rolling roll 2 by the combination of the movement of the moving frame 23 along the guide beam 21 and the movement of the moving plate 30 along the guide member 28. It is possible to move toward and away from the outer peripheral surface.

As shown in FIGS. 8 to 10, the support frame 36 is composed of a fixed side frame 47 and a movable side frame 48 arranged on both sides. Grinding wheel shaft 4 that constitutes the grinder mechanism
One end of 9 is rotatably supported, and a grindstone driving motor 50 is supported on the base end of the three gears 5.
Driving force is transmitted through 1, 52, and 53.

An elastic bush 55 made of rubber or the like is mounted on the grindstone shaft 49 via a bush 54, and an annular grindstone 57 having a bush 56 on the inner circumference is further mounted on the grindstone shaft 49. The support of the end portion of and the whetstone 57 is performed by pressing the movable frame 48 of the support frame 36.

The movable frame 4 of the support frame 36
The opening / closing cylinder 58 can be opened / closed so that the grindstone 57 can be easily replaced. The opening / closing cylinder 58 is fixed to the support frame 36, and the rod tip thereof is the base end portion of the movable frame 48. Are linked to. A compression coil spring 59 is mounted in the opening / closing cylinder 58 and is always biased to close the movable frame 48 and press the grindstone 57. When a working fluid is supplied to the opening / closing cylinder 58. The movable frame 48 can be opened against the compression coil spring 59. The tip of the movable frame 48 has a grindstone shaft 49.
A pressing plate 60 that supports the end portion of the grinding wheel 57 and presses the side surface of the grindstone 57 is rotatably attached via a bearing 61.

In the rolling mill 1, as shown in FIGS. 1 and 4, roll cooling is performed by spraying a cooling liquid such as water toward the outer peripheral surface of the rolling roll 2 and over the entire length of the rolling roll 2. A nozzle 62 is provided.

The grinding powder removing device 10 installed in the online roll grinder 20 thus constructed is shown in FIG.
As shown in FIG. 3, the grindstone nozzle 11 is installed on the upper surface of the support frame 36 and the roll nozzle 12 is installed on the lower surface of the support frame 36.

As shown in FIGS. 1 and 2, four grindstone nozzles 11 are provided corresponding to the four grindstones 57 mounted on the grindstone shaft 49, and a cleaning liquid such as water is supplied under pressure. It is attached to the grindstone header 13 at equal intervals so that the jetting direction is perpendicular to the outer peripheral surface of the grindstone 57 in the radial direction of the grindstone shaft 49.

Further, as shown in FIGS. 1 and 3, the roll nozzles 12 are two types of nozzles 12 having different jetting directions.
The roll header 14 is provided with four a and 12b each, and is attached to the roll header 14 to which a cleaning liquid such as water is supplied under pressure.

The roll header 14 has a length substantially parallel to the width of the support frame 36 in parallel with the grindstone shaft 49. And, the arrangement of the roll nozzles 12 to the roll header 14 is such that four nozzles 12a of one type are arranged at equal intervals from one end to the middle portion of the roll header 14.
The jetting direction in the horizontal plane (on the upper side of FIG. 3) is slanted so as to face the other end of the grindstone shaft 49, and another four nozzles 12b of the other type are provided from the other end of the roll header 14 to the middle portion. They are arranged at intervals and are inclined so that the jetting direction in the horizontal plane (top in FIG. 3) faces one end of the grindstone shaft 49. In addition, the injection direction in the vertical plane of these roll nozzles 12 (on the top of FIG. 1) is such that they are directly jetted to the outer peripheral surface of the rolling roll 2.

A cleaning liquid such as water is supplied under pressure to the grindstone header 13 and the roll header 14, and the support frame 36 reciprocates in the axial direction of the rolling roll 2 and the outer periphery of the roll. The cleaning liquid can be continuously supplied during the movement toward and away from the surface.

A wiper 15 made of an elastic material such as rubber is provided over the entire width of the rolling roll 2 so that the cleaning liquid sprayed from the roll nozzle 12 comes into contact with the rolling roll 2 below the position where it hits the rolling roll 2. Arranged and fixed to the housing of the rolling mill or the like, the cooling liquid supplied to the rolling roll 2 and the grindstone nozzle 11 and the roll nozzle 12 are provided.
Make sure that the cleaning liquid from does not reach the material to be rolled (strip) 4.

Grinding powder removing device 10 configured as described above
According to this, when the rolling roll 2 is ground by the online roll grinder 20 in a state where a large amount of cooling liquid is jetted from the roll cooling nozzle 62, grinding powder is generated, but the grindstone 57 is used.
On the other hand, as shown in FIGS. 1 and 2, since the cleaning liquid is directly sprayed from the grindstone nozzle 11, the grinding powder is washed away and clogging can be prevented.

For the rolling roll 2 and the material to be rolled (strip) 4, as shown in FIGS. 1 and 3, from the roll nozzle 12 to the roll axial direction on the roll surface in contact with the grindstone 57. Since the cleaning liquid is jetted obliquely toward the end portion, the grinding powder is pushed in the axial direction and is removed on both sides in the axial direction of the roll by the flow of the cooling liquid of the rolling roll 2.

Further, the grinding powder, the cleaning liquid and the cooling liquid adhering to the rolling roll 2 are wiped off by the wiper 15 and prevented from being applied to the material 4 to be rolled. Therefore, it is possible to prevent the grinding powder from adhering to the rolling roll 2 and the strip, and it is possible to obtain a product of good quality without scratches.

Next, the grinding of the rolling roll 2 by the above-described online roll grinder 20 equipped with the grinding powder removing device 10 will be briefly described. The moving frame 25 is moved by the moving motor 25 to one axial end of the rolling roll 2 in the rolling state, and the grindstone 5 at the tip of the supporting frame 36 is moved.
The position is adjusted so that 7 is the grinding start position.

Then, the grindstone 57 is moved to the grindstone driving motor 50.
The reciprocating drive cylinder 33 is operated to move the moving plate 30 to advance the support frame 36 on which the grindstone 57 is supported toward the outer peripheral surface of the rolling roll 2. To start grinding. Then, the moving frame 23 is reciprocated in the axial direction of the rolling roll 2 while moving along the guide beam 21, and is ground according to a required roll profile of the rolling roll 2.

On the other hand, the pressing force of the grindstone 57 against the rolling roll 2 is adjusted by operating the pressing force adjusting cylinder 45 to extend or contract the rod.
When the rod is extended, the compression coil spring 42 is contracted to increase the repulsive force and increase the pressing force. When the rod expands and contracts, the pressing force decreases. The pressing force in this case is detected by the load cell 44, and by using the detection result, the pressing force can be adjusted to an appropriate pressing force.

When the grindstone 57 is replaced when the grindstone 57 is damaged or worn, the working fluid is supplied to the opening / closing cylinder 58 of the support frame 36 and the compression coil spring 59.
Against the above, the rod is extended to move the movable-side frame 48 so as to open, a gap is formed between the movable-side frame 48 and the grindstone shaft 49, the grindstone 57 is taken out, a new grindstone 57 is mounted, and then the working fluid is discharged. Then, the movable side frame 46 is closed and the grindstone shaft 49 and the grindstone 57 are returned to the state of being rotatably held.

In this online roll grinder 20, the grindstone 57 is attached to the grindstone shaft 49 via the elastic bush 55, and the support frame 36 can be buffered via the guide rod 37 and the coil spring 39. The shock applied to the grindstone 57 at the time of starting or stopping the grinding is absorbed, and breakage can be prevented as much as possible.

Further, since the grindstone 57 itself is divided into four pieces, it is possible to efficiently grind according to the shape of the rolling roll 2. It should be noted that this grindstone breakage detecting device is not limited to the online roll grinder described in the above embodiment, but can be widely applied to online roll grinders using grindstones of other types. Further, each constituent element may be modified within the scope of the invention.

[0038]

As described above in detail with reference to one embodiment, according to the grinding powder removing device for an online roll grinder of the present invention, a grindstone nozzle is provided on a support frame on which the grindstone is supported. Since the cleaning liquid is sprayed almost vertically from the nozzle for the outer circumference of the grindstone,
It is possible to keep the surface of the grindstone clean, prevent clogging of the grindstone, and efficiently grind.

Further, the supporting frame is provided with a roll nozzle, and the cleaning liquid is jetted obliquely in the axial direction of the outer circumference of the rolling roll from the roll nozzle, so that the grinding powder is moved so as to be pushed to the roll end. However, it is possible to prevent the grinding powder from adhering to the roll surface or the strip by using a large amount of the cooling liquid of the rolling roll, and it is possible to obtain a rolled product of good quality.

[Brief description of drawings]

FIG. 1 is a front view of a main part according to an embodiment of a grinding dust removing device of an online roll grinder of the present invention.

FIG. 2 is a plan view of a main portion according to an embodiment of the grinding dust removing device of the online roll grinder of the present invention.

FIG. 3 is a bottom view of a main portion according to an embodiment of the grinding dust removing device of the online roll grinder of the present invention.

FIG. 4 is an overall explanatory diagram of an online roll grinder to which the present invention is applied.

FIG. 5 is a plan view of a guide member of an online roll grinder to which the present invention is applied.

FIG. 6 is a central vertical view of a guide member portion of an online roll grinder to which the present invention is applied.

FIG. 7 is a view of the online roll grinder to which the present invention is applied, taken along the line AA in FIG.

FIG. 8 is a plan sectional view of a grindstone portion of an online roll grinder to which the present invention is applied.

9 is a BB arrow view of FIG. 8 of an online roll grinder to which the present invention is applied.

FIG. 10 is a view of the online roll grinder to which the present invention is applied taken along the line CC in FIG.

[Explanation of symbols]

 2 Rolling Roll 10 Grinding Powder Removal Device 11 Grindstone Nozzle 12 Roll Nozzle 13 Grindstone Header 14 Roll Header 15 Wiper 20 Online Roll Grinder 36 Support Frame 47 Fixed Side Frame 48 Movable Side Frame 49 Grindstone Shaft 50 Grindstone Drive Motor 57 Whetstone 62 Cooling nozzle

Front page continuation (72) Inventor Masaaki Koike 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawajima-Harima Heavy Industries Co., Ltd. Yokohama No. 2 Factory (72) Inventor Masutani Isoku Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa No. 1 Ishikawajima Harima Heavy Industries Co., Ltd.Yokohama No. 2 Factory (72) Inventor Yutaka Osumi No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture Ishikawajima Harima Heavy Industries Co., Ltd. Yokohama No. 2 Works (72) Inventor Toru Yano Yokohama, Kanagawa Prefecture No. 1 Shin-Nakahara-cho, Isogo-ku, Ishikawajima-Harima Heavy Industries Co., Ltd.Yokohama No. 2 Factory (72) Inventor Hisao Takenaka No. 1 Kawasaki-cho, Chiba City Chiba Works (72) Inventor Takashi Nito Chiba Prefecture 1 Kawasaki-cho, Chiba Kawasaki Steel Co., Ltd. Inside the Chiba Works (56) References JP 54-3989 (JP, A) JP 57-194704 (JP, U) JP 59-162108 (JP, 162) U) Actually open 50-124691 (JP, U) Actually open 50-125189 ( JP, U)

Claims (1)

(57) [Claims] 1. An online roll grinder in which a grindstone for roll grinding is attached to a support frame that is movable in the axial direction of a rolling roll cooled with a cooling liquid and that can move toward and away from the outer peripheral surface of the rolling roll. A grindstone nozzle for cleaning the surface of the grindstone by spraying toward the outer circumference is provided, and the grinding powder is sprayed obliquely in the axial direction onto the outer peripheral surface of the rolling roll to be ground on the support frame to end the rolling powder. A grinding powder removing device for an online roll grinder, which is provided with a roll nozzle for moving and eliminating it.