JPS59143812A - Roller for roller table - Google Patents

Abstract

PURPOSE:To reduce noise by disposing a relatively thin rubber lining coating on the inside wall of a hollow metal cylinder forming the above roller to absorb and damp a crashing sound produced by contact of a steel material with the roller. CONSTITUTION:A relatively thin rubber lining coating 2 is disposed on the cylindrical inner peripheral wall 1a and both inside walls 1b of both end plates of a hollow metal cylinder 1 forming a roller for a roller table. The above coating 2 is formed by applying rubber coating produced by processing regenerated rubber and synthetic resin with a solvent such as naphtha to the respective walls 1a, 1b with a spray. The thickness of the coating 2 is, for example, about 1 to 10mm., and preferably about 2mm.. In this arrangement, a crashing sound produced by contacting a steel material with a roller can be absorbed and damped to reduce noise.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller for a roller table for conveying steel materials and the like.

In general, roller tables for transporting steel materials such as steel plates, shaped steel, and steel bars are used not only to transport the steel materials, but also to invert the steel materials on the roller table, or to transport the steel materials onto the roller table using a crane or other means. When steel materials are handled in various ways, such as when they are lowered, considerable impact noise is generated when the steel material hits the rollers, causing noise pollution.

Conventionally, measures against such noise pollution include the use of sound insulating walls to prevent noise from escaping the factory.

The only way to do so is to insulate the sound, and there are problems such as the cost of installing sound insulating walls, and it is practically impossible to achieve sufficient sound insulation, so the reality is that the noise generated by roller tables still poses a pollution problem. It is.

The applicant claims that the roller tape/1 which is the source of the above-mentioned noise
The purpose is to solve the above-mentioned problems by absorbing or attenuating the impact sound generated by the four bodies, in particular by the rollers.

Various methods can be considered to reduce the impact sound generated by the rollers of a roller table. Attempts were made to reduce the above-mentioned impact noise by gluing them together, but the expected noise reduction effect could not be obtained.

However, the present inventors have discovered that a remarkable noise reduction effect can be obtained by applying a relatively thin rubber lining to the inner wall of the hollow metal cylinder that constitutes the roller of the roller table. Confirmed.

The present invention has been made based on the recognition of this fact and features a roller having a relatively thin rubber lining coating on the inner wall of the hollow metal cylinder constituting the roller of the roller table.

The invention will now be explained with reference to the drawings.

FIG. 1 shows a roller for a roller table according to the present invention having a relatively thin rubber lining coating 2 on the inner circumferential wall 1a of the cylindrical portion and the inner walls 1b of both end plates of a hollow metal cylindrical body 1, and 8 indicates the rotation axis.

The rubber lining coating 2 is formed by spraying or otherwise applying a rubber paint made by treating recycled rubber and synthetic resin with a solvent such as naphtha or methanol onto the inner circumferential wall 1a of the hollow metal cylinder 1 and the inner walls 1b of both end plates. It can be applied by coating. The thickness of the rubber lining coating 2 is relatively thin, about 1 to 10 mm, preferably about 2 mm.

Table 1 shows the results of a noise test for a lined roller according to the present invention and a conventional uncoated roller.

Table 1 Noise test results (dB) The rollers used in the test were made of steel, with an outer diameter of 216 mm and a width of 4 mm.
It was a hollow cylindrical body with a thickness of about 12 mm and a diameter of 50 mm and a length of 500 mm. The roller according to the invention was lined with a paint made of recycled rubber and synthetic resin treated with a mixed solvent of naphtha and methanol and sprayed to a thickness of two coats.

Fig. 2 shows the noise test method, in which a roller 1 is supported on a support stand 4 at both ends of a rotating shaft 8, and a weight 6 suspended from above with a string 5 having a length of 1205 mm is suspended from the surface of the roller l. A noise meter 7 installed at a distance of 1000 meters from the surface of the roller 1 measures the noise generated when a roller collides with itself from positions separated by various weight distances measured in the horizontal direction.
Measured by.

As is clear from Table 1, the noise generated by conventional rollers is reduced by about 25 to 30 dB according to the present invention, thereby making it possible to reduce the noise at the roller table to such an extent that noise pollution does not become a problem.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a roller for a roller table according to the present invention, and FIG. 2 is a diagrammatic perspective view showing a noise test method. 1...Hollow metal cylindrical body 2...Rubber lining coating.

Claims (1)

[Claims] L. A roller for a roller table comprising a hollow metal cylindrical body, characterized in that the inner wall of the hollow metal cylindrical body has a relatively thin rubber lining coating.