JPH0585670A - Rubber sleeve for adjusting drum expanded diameter of payoff reel - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the rubber sleeve for adjusting the drum expansion diameter of the pay-off reel from being deformed before mounting the drum. [Structure] A steel arcuate piece having a length corresponding to the body length of the rubber sleeve and a constant width on the outer peripheral surface of the rubber sleeve, and an inner arc extending along the outer peripheral surface of the rubber sleeve, between adjacent steel arcuate pieces. A plurality of steel arc-shaped pieces are placed so that there is no gap between them, the rubber sleeve is surrounded by a plurality of steel arc-shaped pieces, and the rubber sleeve extends in the circumferential direction when the diameter of the rubber sleeve is enlarged. A rubber sleeve for adjusting the drum expansion diameter of a pay-off reel, characterized by being attached to a rubber sleeve. [Effect] The rubber sleeve can be easily attached to the drum of the pay-off reel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber sleeve for adjusting the enlarged diameter of a drum of a pay-off reel, which is used when a slit steel strip, which is a raw material for an electric resistance welded steel pipe, is slit from a wide steel strip.

[0002]

2. Description of the Related Art When a slit steel strip, which is a material for an electric resistance welded steel pipe, is obtained by slitting a coil of a wide steel strip, as shown in FIG. 8, the wide steel strip as rolled on a drum 21 of a payoff reel is used. The coil 22 of the wide steel strip is loaded with the coil 22 of
2 pinch the end of 2 with pinch roll 23,
3 is rotated in the direction in which the tip of the coil 22 of the wide steel strip advances, and the drum 21 of the payoff reel is rotated in the direction in which the coil 22 of the wide steel strip is rewound. Then, the leveler 24 arranged behind the pinch roll 23
After correcting the winding behavior of the coil 22 of the wide steel strip with, the slitter 25 slits the wide steel strip into a plurality of narrow steel strips, and the slit narrow steel strip 26 is arranged behind the slitter 25. It is wound by the drum 27 of the take-up reel.

When the coil 22 of the wide steel strip is rewound, the drum 21 of the payoff reel is adapted to rotate and rewind, so that the outer peripheral surface of the drum 21 of the payoff reel and the inner surface of the coil 22 of the wide steel strip. The wide steel strip coil 22 must be in contact with and not slip between the two sides.
Cannot idle around the drum 21 of the pay-off reel and cannot be rewound. Therefore, the outer diameter of the drum 21 of the pay-off reel has a structure that can be expanded and contracted. When the wide steel strip coil 22 is loaded, the outer diameter of the drum 21 of the pay-off reel is reduced to be smaller than the inner diameter of the wide steel strip coil 22 and the wide steel strip coil 22 is loaded. The rear outer diameter is enlarged so that the outer peripheral surface of the drum 21 of the pay-off reel and the inner diameter surface of the coil 22 of the wide steel strip are brought into contact with each other to prevent slippage between both surfaces.

The above-mentioned expanded diameter of the payoff reel drum 21 naturally has an upper limit, and when the inner diameter of the coil 22 of the wide steel strip to be charged becomes large, even if the diameter of the payoff reel drum 21 is simply increased, the payoff is increased. The outer peripheral surface of the reel drum 21 cannot contact the inner diameter surface of the coil 22 of the wide steel strip. Then, in such a case, the drum 21 of the pay-off reel whose diameter is reduced is covered with a rubber sleeve having a certain thickness, and the drum 2 of the pay-off reel in this state is covered.
After loading the coil 22 of the wide steel strip into the No. 1, the diameter of the drum 21 of the payoff reel is increased. By doing so, the outer diameter of the rubber sleeve is also enlarged, so that the outer peripheral surface of the rubber sleeve contacts the inner diameter surface of the coil 22 of the wide steel strip. That is, the slip between the drum 21 of the payoff reel and the coil 22 of the wide steel strip can be prevented by interposing the rubber sleeve therebetween.

The above-mentioned rubber sleeve for adjusting the enlarged diameter of the drum 21 of the pay-off reel has an inner diameter of 500 mm or more and a thickness of 7 mm.
In addition to being about 5 mm, there must be sufficient elasticity for the outer diameter of the drum 21 to expand, so if the rubber sleeve axis is placed horizontally on the floor, etc., the cross section will remain cylindrical due to its own weight. It cannot be deformed and transforms into an ellipse. Therefore, when the conventional rubber sleeve is mounted on the drum 21 of the pay-off reel, the rubber sleeve 31 may keep the cylindrical shape as shown in the perspective view of FIG. 9 and the AA arrow view of FIG. As much as possible, the rubber sleeve 31 is placed on a rubber sleeve deformation preventing jig 33 having a recess 32 having the same outer diameter as that of the rubber sleeve 31.
The rubber sleeve 23 is mounted on the drum 21 of the pay-off reel by moving the rail sleeve 35 on the rail 35.

[0006]

As described above, when the conventional rubber sleeve is used, it is necessary to always use the rubber sleeve deformation preventing jig in order to mount the rubber sleeve on the drum of the payoff reel. There was a problem that the work efficiency decreased.

The present invention solves the above problems of the prior art and provides a rubber sleeve which does not require the use of a jig for preventing deformation of the rubber sleeve when the rubber sleeve is mounted on the drum of the payoff reel. The purpose is to do.

[0008]

A rubber sleeve for adjusting a drum enlarged diameter of a payoff reel according to the present invention has a length corresponding to a body length of the rubber sleeve and a constant width on an outer peripheral surface of the rubber sleeve, and an inner arc. A plurality of steel arcuate pieces along the outer peripheral surface of the rubber sleeve are arranged so that there is no gap between adjacent steel arcuate pieces, and the rubber sleeve is surrounded by the plurality of steel arcuate pieces and the rubber sleeve A plurality of steel arcuate pieces are attached to the rubber sleeve so that the rubber sleeve extends in the circumferential direction when the diameter is enlarged.

[0009]

In the rubber sleeve for adjusting the drum enlarged diameter of the pay-off reel according to the present invention, even if the rubber sleeve is placed on the floor or the like with the axis of the rubber sleeve horizontal, a plurality of steel arc-shaped pieces are provided along the outer peripheral surface of the rubber sleeve. Since the rubber sleeve is surrounded in a state of competing in the circumferential direction, even if the rubber sleeve tries to be deformed by its own weight, the plurality of arcuate steel pieces prevent the deformation. Therefore, when the rubber sleeve is mounted on the drum of the pay-off reel, it is not necessary to use the rubber sleeve deformation preventing jig, and the mounting work can be performed in a short time.

Further, since a plurality of steel arc-shaped pieces are attached to the rubber sleeve so that the rubber sleeve extends in the circumferential direction when the diameter of the rubber sleeve is increased, that is, the inner arc surface of the steel arc-shaped piece is formed. Since the rubber sleeve is not entirely fixed to the rubber sleeve but only partially fixed to the rubber sleeve, a required outer diameter can be obtained without cutting the rubber sleeve when expanded.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rubber sleeve for adjusting a drum enlarged diameter of a pay-off reel according to an embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of a rubber sleeve for adjusting a drum enlargement diameter of a pay-off reel according to an embodiment of the present invention before enlargement, FIG.
FIG. 3 is a lateral cross-sectional view of a rubber sleeve for adjusting a drum expansion diameter of a pay-off reel according to an embodiment of the present invention after expansion.

A rubber sleeve 1 for adjusting a drum expansion diameter of a pay-off reel according to one embodiment of the present invention comprises a rubber sleeve 2 and
The steel arc-shaped pieces 3 having the length corresponding to the body length of the rubber sleeve 2 on the outer peripheral surface of the rubber sleeve 2 and the inner arc-shaped surfaces along the outer peripheral surface of the rubber sleeve 2 are adjacent to each other. A plurality of rubber sleeves 2 are provided without a gap between them.
A plurality of steel arcuate pieces 3 are surrounded by the plurality of steel arcuate pieces 3 so that the rubber sleeve 2 extends in the circumferential direction when the diameter of the rubber sleeve 2 is increased.
Is attached to the rubber sleeve 2. Therefore, even if the rubber sleeve 1 is placed on the floor or the like with the axis of the rubber sleeve 1 horizontal, the plurality of steel arc-shaped pieces 3 surround the rubber sleeve 2 in a state of competing in the circumferential direction along the outer peripheral surface of the rubber sleeve 2. Therefore, even if the rubber sleeve 2 tries to be deformed by its own weight, the plurality of steel arc-shaped pieces 3 prevent the deformation. Figure 3
When the rubber sleeve 1 is mounted on the drum 21 of the pay-off reel, as shown in the perspective view of FIG. 1, the rubber sleeve 1 can be easily mounted by placing the rubber sleeve 1 on the carriage 24 and running the carriage 24 on the rail 25. ..

FIG. 4 is a vertical sectional view of the rubber sleeve 1 showing a state where the steel arcuate piece 3 is attached to the rubber sleeve 2. A connecting metal fitting 4 having an inverted T-shaped cross section along the longitudinal direction of the steel arcuate piece 3 at the center in the width direction of the inner arc surface of the steel arcuate piece 3.
Of the steel arc-shaped piece 3 along the longitudinal direction of the rubber sleeve 2 while the reverse T-shaped groove is formed on the outer peripheral surface of the rubber sleeve 2 so that the reverse T-shaped connecting hardware 4 can be mounted.
The number of And the inverted T fixed to the steel arc-shaped piece 3
Insert one end of the V-shaped connecting hardware 4 into one end of an inverted T-shaped groove provided on the outer peripheral surface of the rubber sleeve 2 to form the inverted T-shaped connecting hardware 4.
Is pushed along the inverted T-shaped groove of the rubber sleeve 2. Since the connection structure between the steel arcuate piece 3 and the rubber sleeve 2 is the above-described connection structure, the rubber sleeve 2
When the diameter of the rubber sleeve 2 is to be increased, the rubber sleeve 2 can freely extend in the circumferential direction, and the rubber sleeve 2 is not broken because the steel arcuate piece 3 is attached.

FIG. 5 shows the amount of deformation (ΔH) from the cylindrical shape when the sleeve 1 shown in FIG. 6 or the conventional sleeve 31 (the inner and outer diameters of the sleeve) are placed on a plane with the axis line horizontal. It is a graph shown. This sleeve is mounted on the drum 21 of the payoff reel having a diameter of 530 mm when contracted and 610 mm when expanded. The inner diameter of the rubber sleeve 2 is 550 mm, the body length is 1500 mm, and the thickness is 682 m.
Since the outer peripheral surface is provided with eight steel arc-shaped pieces 3 having a thickness of 9 mm, the outer diameter of the rubber sleeve 1 including the steel arc-shaped pieces 3 is 700 mm. Then, when the drum 21 of the pay-off reel is expanded to 610 mm, the outer diameter is 780 mm. A conventional sleeve (a rubber sleeve having an outer diameter of 700 mm without using a steel arcuate piece) has a deformation amount of 25 mm, whereas the sleeve of the present invention is close to 0, and the sleeve of the present invention is hard to deform. You can see that

The inner diameter of the pay-off reel of the present invention having a rubber sleeve for adjusting the drum expansion diameter is 7 mm.
When a coil of a steel strip having a diameter of 62 mm, an outer diameter of 1800 mm and a weight of 30 tons was loaded and the coil was rewound, it could be rewound without any problems.

As shown in the cross-sectional view of FIG. 7, tapered portions 2a are provided at both ends of the rubber sleeve 2, and tapered portions 3a are also provided at both longitudinal ends of the arc-shaped steel piece 3.
By providing the, it is possible to prevent the rubber sleeve 2 from being damaged by the coil of the steel strip.

[0017]

According to the present invention, the rubber sleeve for adjusting the enlarged diameter of the payoff reel can be easily mounted on the drum of the payoff reel, and the rubber sleeve is not damaged by the coil of the steel strip.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a rubber sleeve for adjusting a drum enlarged diameter of a payoff reel according to an embodiment of the present invention.

FIG. 2 is a transverse cross-sectional view of a rubber sleeve for adjusting the drum enlargement diameter of the pay-off reel according to the first embodiment of the present invention in an enlarged state.

FIG. 3 is a perspective view showing a method of mounting the drum expansion diameter adjusting rubber sleeve of the pay-off reel of the embodiment of the present invention on the pay-off reel drum.

FIG. 4 is a vertical sectional view of a rubber sleeve showing a state where a steel arc-shaped piece is attached to the rubber sleeve.

FIG. 5 is a graph showing a deformation amount of a rubber sleeve.

FIG. 6 is an explanatory diagram of a deformation amount of a rubber sleeve.

FIG. 7 is a cross-sectional view of a rubber sleeve for adjusting a drum enlarged diameter of a pay-off reel according to another embodiment of the present invention.

FIG. 8 is an explanatory view showing a method of slitting a wide steel strip into a plurality of narrow steel strips.

FIG. 9 is a perspective view showing a method of mounting a conventional rubber sleeve for adjusting a drum enlarged diameter of a payoff reel on a drum of a payoff reel.

10 is a view on arrow AA of FIG. 9. FIG.

[Explanation of symbols]

1 Rubber sleeve for adjusting drum enlarged diameter of pay-off reel according to one embodiment of the present invention 2 Rubber sleeve 3 Steel arcuate piece 4 Reverse T-shaped connecting hardware

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Kusaka 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nihon Kokan Co., Ltd. (72) Inventor Michiaki Yoshida 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nippon Steel Tube Co., Ltd.

Claims (1)

[Claims] 1. A steel arc-shaped piece having a length corresponding to a body length of the rubber sleeve and a constant width on an outer peripheral surface of the rubber sleeve, and an inner arc along the outer peripheral surface of the rubber sleeve. Place a plurality of steel pieces so that there is no gap between them, surround the rubber sleeve with a plurality of steel arc-shaped pieces, and make a plurality of steel pieces so that the rubber sleeve extends in the circumferential direction when the diameter of the rubber sleeve is enlarged. A rubber sleeve for adjusting the drum expansion diameter of a payoff reel, characterized in that an arc-shaped piece is attached to the rubber sleeve.