JPH069683Y2 - Scale seal for rolling rolls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a scale seal that is attached to an end surface of a roll chock that supports a rolling roll and forms a contact sealing portion with the end surface of the rolling roll.

<Prior Art> Particularly in a backup roll of a rolling mill, a plurality of seals are provided in a roll neck portion in order to prevent water, scale, or the like used in a rolling operation from entering between a roll shaft and a roll chock. A typical structure of the roll neck portion will be described with reference to FIG.

As shown, the roll shaft 2 of the rolling roll 1 and the seal end plate 4 attached to the end surface of the roll chock 3
A so-called mogoyle seal 5 is provided between the seal end plate 4 and the roll end surface 1A on the outer diameter side of the mogoyle seal 5. The mogoyle seal 5 is a roll shaft 2
The outer ring 6 and the inner cylinder portion of the seal end plate 4 are brought into contact with a plurality of lips to form a contact sealing portion.
The non-contact sealed portion (labyrinth seal) is formed with the seal inner ring 7 used as the positioning member.

However, the outer ring 6 and the seal inner ring 7
Since the non-contact sealing part formed by and has no contact, the hermeticity is insufficient, and there is a drawback that water and scale enter the site where the mogoyle seal 5 exists relatively easily.

Therefore, for example, Japanese Utility Model Publication No. 51-1391, Japanese Utility Model Publication No. 55-4204.
As shown in Japanese Patent Publication No. 3, a structure in which a contact sealing portion is provided in addition to the above structure is considered.

In both publication technologies, as shown in FIGS. 4 and 5,
Scale seals 8 and 9 instead of the outer ring 6
Is provided. That is, the scale seal 8 in the former publication technique has a main body portion 8A formed by integrally molding a core metal 81 and an elastic material 82 such as rubber covering the core metal 81, and a main body portion 8A.
And a diametrically expanded lip 8B provided at the inner end of the radially inwardly facing flange portion 83 provided in the main body portion 8A and the seal inner ring 7 form a non-contact sealing portion, The lip 8B contacts the roll end surface 1A to form a contact sealing portion.

The scale seal 9 in the latter publication technology is a ring 9
A lip 9B similar to the lip 8B is provided at the inner end of A. The lip 9B contacts the roll end surface 1A to form a contact seal portion, and the inner end of the base of the lip 9B and the seal inner ring 7 are provided. And a non-contact sealing part is formed between the and.

<Problems to be Solved by the Invention> By the way, in any of the above-mentioned publication techniques, when the rolling roll 1 is thrust-displaced so as to approach the roll chock 3 side as shown by the chain double-dashed line, the respective lips 8B, 9B are There is a high risk of being damaged by being pinched between the radially inward flange portion 83 of 8A or the outer end surface 9C of the ring 9A and the roll end surface 1A, and in the worst case, it may be crushed.
As a result, it was necessary to frequently replace the seal itself.

Incidentally, in the technique of Japanese Utility Model Publication No. 55-42043, it is considered to provide an annular convex portion projecting to the ring 9A side on the roll end surface in order to prevent the lip damage, but the annular convex portion is purposely formed on the roll end surface. It is necessary and costly.

The present invention has been made in view of such circumstances, and it is possible to avoid damage to the lip as in the past without performing troublesome processing on the roll end surface, and to achieve a good sealing function for a long time. It is intended to provide a seal.

<Means for Solving the Problems> In order to achieve such an object, the present invention is a scale that is attached to an end surface of a roll chock that supports a rolling roll and forms a contact sealing portion with the end surface of the rolling roll. The seal has the following configuration.

The scale seal for a rolling roll of the present invention comprises a cylindrical main body having a mounting portion for a roll chock at one end, and a radially extending inward end at the other end of the cylindrical main body, which faces the roll end face with a predetermined gap. And a lip provided on the outer peripheral surface of the cylindrical main body so as to expand in diameter toward the roll end surface side and elastically contacting the roll end surface.

<Operation> According to the above configuration, the lip makes elastic contact with the end surface of the roll to form the contact sealing portion, and therefore it is effective in preventing water and scale from entering. Moreover, even if the end face of the rolling roll is thrust-displaced until it comes into contact with the radially inward flange portion, the lip bends so as to warp to the roll chock side, but the base of the lip, that is, the swing center, is the cylindrical body. Since it is set on the outer peripheral surface and there is a space on the back side of the lip on the cylindrical main body, the lip is not sandwiched between objects as in the conventional case. In other words, even in such a situation, the lip only bends toward the roll chock side and is not damaged or crushed.

Furthermore, if the base of the lip is brought closer to the mounting portion side on the cylindrical main body and is kept away from the radially inward flange portion, the amount of deflection of the lip itself can be small even in the above situation, and the bending fatigue of it Will be suppressed.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 and 2 show an embodiment of the present invention.
In the figure, the same parts and portions as those shown in FIG. 3 of the conventional example are designated by the same reference numerals, and the description thereof will be omitted.

The scale seal 10 is formed by fitting and adhering a separately molded elastic material 30 such as rubber to the outer peripheral surface of the cored bar 20. The cored bar 20 includes a cylindrical portion 21, a minute radially inward flange portion 22 formed on one end of the cylindrical portion 21, and a radially inward flange portion formed on the other end of the cylindrical portion 21. It has 23 and. Elastic material
30 is formed in a substantially U shape, and has a mounting flange portion 31 that extends outward in the radial direction, a cylindrical portion 32 that is connected to the inner end of the mounting flange portion 31, and a cylindrical portion 32. And a lip 33 that is connected to the other end of the and extends radially outward in the radial direction.

The elastic material 30 is press-fitted and fitted onto the core metal 20, and the cylindrical portion of the core metal 20 is
The cylindrical portion 32 of the elastic member 30 overlaps the elastic member 21, and the radially outward flange 22 of the cored bar 20 is caught by the mounting flange 31.
The lip 33 is set so as to stand up in the cylindrical portion 21 of the cored bar 20 in the vicinity of the radially inward flange portion 23. In addition,
The rising position of the lip 33 on the cylindrical portion 21 of the cored bar 20 can be set arbitrarily.

The mounting collar 31 of the elastic member 30 is provided with a metal ring 12 having an L-shaped cross-section that is exposed at one side, and a suitable number of circumferential positions (16 in the embodiment).
(A place) and a spacer ring 11 made of metal disposed at the location are buried, and a bolt 13 is inserted into a through hole provided so as to penetrate the metal ring 12 and the spacer ring 11,
The scale seal 20 is adapted to be attached to the end surface of the seal end plate 4, and prevents the thickness variation of the attachment collar 31 due to over-tightening of the bolt 13 and prevents the lip 33 when the rolling roll 1 is placed at a fixed position. Roll end face 1A
The contact pressure against is kept constant. further,
The tapered portion 12A of the metal ring 12 is for reinforcing the root of the lip 33.

The root of the lip 33 is set in the cylindrical portion 21 of the cored bar 20 in the vicinity of the radially inward flange 23, so that the lip 33 swings around this root. In this embodiment, the length of the lip 33 is set to be long so as to make a light contact with the roll end surface 1A, and torque loss when rotating the rolling roll 1 at high speed is minimized. I try to make it small.

In this scale seal 10, the cylindrical portion 21 of the cored bar 20 and the cylindrical portion 32 of the elastic material 30 correspond to the cylindrical body described in the claims, and the mounting flange portion 31 of the elastic material 30 is mounted in the claims. Further, the radially inward flange portion 23 of the cored bar 20 corresponds to the radially inward flange portion described in the claims. That is, in this example, the scale seal 10 is described as a structure in which the core metal 20 and the elastic material 30 are combined, but it is also possible to implement it as a structure in which the other parts except the lip 33 are formed of a single material. Is.

By the way, in the scale seal 10 having the above-described structure, the rolling roll 1 is thrust-displaced in the direction of the arrow, that is, closer to the roll chock 3 side, and the roll end surface 1A is directed toward the radially inward flange portion 23 of the scale seal 10. When approaching, as shown in FIG. 2, the lip 33 bends so as to warp in the displacement direction, but since there is a space on the back side of the lip 33, that is, the seal end plate 4 side, the lip 33 is bent.
33 does not get sandwiched between objects as in the past. Therefore, even in such a situation, the lip 33 is not damaged or crushed, and its function is stably exhibited for a long period of time. Note that, in reality, the gap between the seal inner ring 7 and the seal end plate 4 is set such that the roll end surface 1A and the cored bar 20 have a radially inward flange portion.
Roll end surface 1A
However, the thrust displacement of the rolling roll 1 does not stop due to the contact between the seal inner ring 7 and the seal end plate 4. Even if the seal inner ring 7 is deformed so that the roll end surface 1A comes into contact with the radially inward flange portion 23, the damage of the lip 33 can be avoided by the above-described explanation.

In the above configuration, as the rising position of the lip 33 on the cylindrical portion 21 is separated from the radially inward flange portion 23 of the cored bar 20, the amount of bending of the lip 33 can be reduced, and the bending fatigue can be reduced. Like

<Effect of the Invention> As described above, according to the present invention, the radially inward flange portion and the lip located on the same side are separately extended inward and outward in the radial direction, and the base of the lip is formed. Since it is set on the cylindrical main body, even if the roll end surface comes into contact with the radially inward flange portion due to the thrust displacement of the rolling roll, the lip does not have to be sandwiched between objects, and damage to the lip can be prevented. As a result, a good sealing function can be exhibited in the long term. Moreover, it is advantageous in that it does not require a special rolling roll having an annular convex portion on the roll end face as in the conventional case and can be used by simply attaching it to a general rolling roll.

[Brief description of drawings]

1 and 2 relate to an embodiment of the present invention.
The figure is a vertical cross-sectional view showing the upper half of the roll neck portion incorporating the scale seal, and FIG. 2 is an explanatory view of the operation of the scale seal. Also, FIGS. 3 to 5 relate to different conventional examples, FIG. 3 is a vertical sectional view corresponding to FIG. 1, and FIGS. 4 and 5 are vertical sectional views showing only a main part. . DESCRIPTION OF SYMBOLS 1 ... Rolling roll, 1A ... Roll end surface, 3 ... Roll chock, 10 ... Scale seal, 20 ... Core metal, 21 ... Cylindrical part, 22 ... Radial outward flange, 23 ... Radial inward flange, 30 ... Elastic Material, 31… Mounting collar, 32… Cylinder, 33… Lip.

Continuation of the front page (72) Inventor Yasuhiro Goto 3-5-8 Minamisenba, Chuo-ku, Osaka-shi Koyo Seiko Co., Ltd. (72) Takashi Sayama 3-5-8 Minamisenba, Chuo-ku, Osaka-shi, Osaka Koyo Seiko Co., Ltd. (72) Inventor Etsushi Inoue 1-9-18 Shinsaibashisuji, Chuo-ku, Osaka-shi, Osaka Koyo Chicago Rawhide Co., Ltd. (56) Reference JP-A-61-212413 (JP, A) JP 59-185511 (JP, A) Actual opening 55-17655 (JP, U) Actual opening Sho 51-140136 (JP, U) Special public opening Sho 58-21145 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A scale seal which is attached to an end surface of a roll chock supporting a rolling roll and forms a contact sealing portion between the end surface of the rolling roll and a cylindrical body having an attachment portion for the roll chock provided at one end, A flange portion that extends inward in the radial direction at the other end of the cylindrical body and faces the roll end surface with a predetermined gap, and is provided on the outer peripheral surface of the cylindrical body so as to expand to the roll end surface side. A roll seal scale seal characterized by having a lip that elastically contacts the end face of the roll.