JPH11151644A - Noise prevention device in steel strip polishing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the noise occurrence itself securely, eliminate the necessities of soundproofing a conventional work room and remote arrangement thereof, simplify polishing facility of a stainless steel strip in coil, reduce its cost, and improve the workability by installing a simple silencer in the polishing facility. SOLUTION: In steel strip polishing facility which polishes a steel strip in coil by a polishing device 1 installed on a path line of stainless steel strip in coil, a pair of upper and lower rolls 3 such as urethane rubber lining which can come in face-contact with a surface of the steel strip in coil and have a soft surface are installed in the front and back of the polishing device 1, the steel strip in coil C is nipped by these pair of upper and lower rolls 3, 3, the roll 3 is deformed by adequate pressing force to bring it in face-contact with upper and lower faces of the steel strip in coil C sufficiently, and the grinding sound generated by the polishing device 1 is shut off to prevent the resonance of the steel strip in coil C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise control device for preventing a resonance sound generated during polishing in a steel strip polishing facility for polishing the surface of a stainless steel strip, for example.

[0002]

2. Description of the Related Art For example, a stainless steel product specification includes a so-called hairline polished product, which is made by pressing a polishing belt against the surface of a stainless steel strip to move the steel strip.
It is manufactured by providing a scratch-like abrasive pattern on the stainless steel surface. FIG. 4 is a schematic diagram showing the basic configuration of such a polishing apparatus for stainless steel strip. While winding the stainless steel strip C from the pay-off reel A to the tension reel B, the reel D is simultaneously moved from the reel D to the reel E. A polishing belt F wound at a low speed (1 to 50 mm / min) is pressed against a steel strip C by a roll G to give a scratch-like polishing pattern on the steel strip surface.

[0003] However, when polishing is performed by such a polishing apparatus, a small grinding sound (scratch sound) is generated, and this sound resonates the steel strips before and after the polishing apparatus, and an extremely loud noise exceeding 80 dB (resonant sound). Occurred, giving the worker a great deal of discomfort. For this reason, in the related art, some measures have been taken by placing a worker's room in a remote place and using soundproofing equipment or installing a wall around the apparatus.

As a technique for preventing this kind of noise, Japanese Patent Application Laid-Open No. 8-323599 discloses an apparatus for preventing noise when the side end face of a steel strip is continuously ground.

[0005] In this method, three solid propagation preventing rolls (plating rolls) are staggered on the upstream and downstream sides of a grinding device comprising a grindstone and a holding roll, and are pressed alternately on the front and back surfaces of a steel strip. The surface contact of each roll at a predetermined winding angle attenuates the solid-borne sound propagating along the steel strip.

[0006]

The conventional remote control and soundproofing of a work room and the installation of a soundproof wall around a device require a large investment in equipment and are not only ineffective but also inefficient. It even inhibited sex. Therefore, there has been a demand for measures to prevent noise by improving the equipment body.

[0007] In addition, in the case of the conventional device in which the rolls for preventing solid propagation are staggered, a large space is required, a large amount of equipment is required, and the maintainability is not good.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a simple silencer in a polishing facility itself, thereby reliably preventing the generation of noise itself. It is an object of the present invention to provide a noise reduction device for a steel strip polishing facility which can reduce the capital investment and does not hinder workability.

[0009]

In order to achieve the above-mentioned object, a noise control device in a steel strip polishing facility according to the present invention comprises a steel strip polishing apparatus 1 installed in a steel strip pass line, as shown in FIG. In the steel strip polishing equipment for polishing, a pair of upper and lower rolls 3 each having a soft surface capable of making surface contact with the surface of the steel strip is installed before and after the polishing apparatus 1. The steel strip C is sandwiched therebetween.

The roll 3 is made of a steel roll whose roll length is sufficiently larger than the width of the steel strip, and the surface of which is lined with soft rubber or synthetic resin. A sufficient surface contact is made to the surface, and the steel strip C is not damaged. Also, a pair of upper and lower rolls 3,
No. 3 gives one or both of them a function capable of pressing and releasing the steel strip, so that the steel strip can be sandwiched by an arbitrary force.

In the above configuration, when a pair of upper and lower rolls 3, 3 are installed within 4 m upstream of the polishing apparatus 1 and 4 m downstream of the polishing apparatus 1, the surface of the roll 3 is deformed and By making sufficient surface contact with the upper and lower surfaces of the band C, the grinding sound generated in the vicinity of the roll G of the polishing apparatus 1 is prevented from being transmitted to the entire steel band, and the resonance of the steel band C is prevented. Generation of noise is suppressed.

Since it is possible to prevent the generation of noise itself by the polishing apparatus, it is not necessary to take measures to prevent the sound from being provided to the operator, and the necessity of making the work room a soundproof room or disposing it remotely is eliminated. Further, a large-scale structure for winding a steel strip around a roll, unlike the conventional device for staggering rolls for preventing solid propagation, is not required. From the above, simplification of equipment
A small investment can be made, and workability and maintainability can be improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 2 shows an example in which the noise control device of the present invention is applied to a polishing facility for a stainless steel strip. FIG. 3 is an enlarged view of the noise prevention device of the present invention.

In FIG. 2, the polishing equipment for the stainless steel strip includes four polishing apparatuses 1 in the pass line of the stainless steel strip C.
Are arranged at intervals, and a total of five units are arranged so that the noise prevention device 2 of the present invention is located at a position of 500 mm before and after each polishing device 1. That is, the first polishing apparatus 1
In the noise control device of -1, 2-1 is the upstream side, 2-2 is the downstream side, and 2-2 also serves as the noise control device on the upstream side of the second polishing device 1-2. Third and fourth polishing apparatuses 1
The same arrangement is repeated for -3 and 1-4.

For example, the grinding noise generated by the first polishing device 1-1 causes the entire upstream side of the steel strip C to vibrate without the first noise prevention device 2-1 to generate noise of 80 dB or more.

If the second noise prevention device 2-2 is not provided, the grinding noise generated by the first polishing device 1-1 is reduced by the steel between the first polishing device 1-1 and the second polishing device 1-2. The band C is vibrated to generate the same noise. Therefore, the noise prevention device 2
Are arranged as described above, noise caused by each polishing apparatus 1 is prevented.

As shown in FIG. 3, each noise prevention device 2
A pair of upper and lower anti-resonance rubber rolls 3 having a diameter of 200 mm by lining urethane rubber on the outer peripheral surface of a steel roll having a roll length sufficiently larger than the width of the steel strip are arranged on the frame 4 in a pair of upper and lower sides. It is composed. The upper anti-resonance rubber roll 3 is connected to a frame 4 via an air cylinder 5.
To the top of steel strip C, 500-4000kg
It can be pressed and released at any pressure. The lower resonance preventing rubber roll 3 is fixed to the frame 4 so as to be able to contact the lower surface of the steel strip C.

Such a pair of upper and lower resonance preventing rubber rolls 3 are deformed by an appropriate pressing force and sufficiently come into surface contact with the upper and lower surfaces of the steel strip C, thereby cutting off the grinding noise generated by the polishing apparatus 1. The resonance of the band C is prevented, and the noise can be reduced to about 60 dB. In each of the noise prevention devices 2 before and after the polishing device 1, the resonance of the steel strip C is prevented, so that noise generated in the polishing equipment can be completely prevented. Although the roll 3 is lined with urethane rubber, other soft rubber or soft synthetic resin can be used.

[0019]

[Examples] (1) Dimensions of stainless steel strip Thickness: 0.3 to 3.0 mm Width: 600 to 1300 mm Length: coiled (2) Dimensions of rubber roll for preventing resonance Roll dimensions: 200 mm (roll diameter) x 1500 mm
(Roll length) Urethane rubber lining with a thickness of 20 mm (Roll diameter after rubber lining is 200 mm) (3) Noise measurement value under the following conditions a) Use of rubber roll and noise measurement value (2.5 m from polishing machine) (Measurement at position) 5 places of rubber rolls installed (in the present invention): 61 dB Rubber roll not used: 89 to 92 dB b) In the case of a roll without rubber lining Not performed. If the rubber lining is not applied to the roll, it cannot be realized because the stainless steel strip is damaged.

Although the above description has been made of an example in which the present invention is applied to a polishing apparatus for a stainless steel strip, it is needless to say that the present invention is not limited to this and can be applied to a grinding apparatus for other steel strips.

[0021]

As described above, according to the present invention, in a steel strip polishing apparatus for polishing a steel strip by a polishing device installed on a pass line of the steel strip, surface contact with the surface of the steel strip before and after the polishing device, respectively. Since a pair of upper and lower rolls having a soft surface that can be used is installed and the steel strip is sandwiched between the pair of upper and lower rolls, the following effects can be obtained.

(1) By installing a simple silencing device in the polishing equipment itself, it is possible to reliably prevent the noise itself from being generated by the polishing device. The need for a soundproof room and remote installation is eliminated. Thereby, simplification of equipment and cost reduction can be achieved, and workability can be improved.

(2) The noise prevention device can be made to have a relatively simple structure composed of a pair of upper and lower rolls, and a steel strip is wound around the rolls like a conventional device for staggering rolls for preventing solid propagation. Without the need for a large structure for
Installation space and equipment costs can be reduced, and maintainability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a basic configuration of a noise control device in a stainless steel strip polishing facility of the present invention.

FIG. 2 is a schematic side view showing one embodiment of a noise control device in the stainless steel strip polishing equipment of the present invention.

FIG. 3 is a side view showing an example of the noise prevention device of the present invention.

FIG. 4 is a schematic side view showing the basic configuration of a conventional stainless steel strip polishing facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Polishing device 2 ... Noise prevention device 3 ... Resonance prevention rubber roll 4 ... Frame 5 ... Air cylinder A ... Payoff reel B ... Tension reel C ... Stainless steel strip D, E ... Reel F ... Polishing belt G ... Roll

Claims (1)

[Claims] 1. A steel strip polishing facility for polishing a steel strip by a polishing device installed on a pass line of the steel strip, wherein a roll having a soft surface capable of making surface contact with the surface of the steel strip before and after the polishing device, respectively. And a pair of upper and lower rolls, and a steel strip is sandwiched between the pair of upper and lower rolls.