JP2003210249A - Brush roll material and brush roll - Google Patents

Abstract

(57) Abstract: A brush roll of a type in which brush bristle material is made by mixing abrasive particles into a thermoplastic resin composition,
It is possible to reduce the power consumption of a motor for driving a brush roll to about half the conventional power consumption without lowering the polishing result, and to further improve the durability. Kind Code: A1 A polyamide or an alloy compound thereof has a heat resistance of 300 ° C. or more and a particle diameter of 1/10 which supports a sliding agent.
A brush carrier of the type described above is prepared by mixing 0.1 to 10% by weight of a slip carrier of 100 to 1/10 [mu] m and 2 to 40% by weight of abrasive particles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush bristle material for a brush roll and a brush roll for polishing thin plates, thick plates, etc. (collectively referred to as strips hereinafter) in a steel plate production line, and the brush bristles. The material is of a type made by mixing abrasive particles into a thermoplastic resin composition.

[0002] This type of brush bristle material can be advantageously obtained from an industrial viewpoint by spinning it from a thermoplastic resin composition containing abrasive particles by a melt extrusion spinning method. Then, when the strip is polished with a brush roll in which a brush bristle of this type is applied, good polishing efficiency can be obtained.

On the other hand, however, since the brush roll is abraded by pressing it against the strip under pressure, that is, rubbing the strip, the brush roll is abraded, which has the disadvantage of increasing the power consumption of the motor for driving the brush roll. In order to reduce the power consumption of the brush roll drive motor, it is necessary to weaken the reduction degree (pressing degree) of the brush roll. If the reduction degree of the brush roll is weakened, the polishing result will decrease.

[0004]

2. Description of the Related Art Conventionally, in a brush roll using a brush bristle material of the type described above, it is necessary to sufficiently reduce the power consumption of a brush roll drive motor without lowering the polishing efficiency.
It has not been achieved yet.

[0005]

SUMMARY OF THE INVENTION According to the present invention, in a brush roll of this type having a brush bristle material, it is possible to reduce the power consumption of the brush roll drive motor to about half that of the conventional brush roll without lowering the polishing result. Is to enable.

Another object of the present invention is for the brush bristle material to reduce the energy loss in said type of brush roll. Specifically, it is as follows.

In the brush bristle material of this type of brush roll, the abrasive particles mixed in the filament yarn of the resin composition, which is the main constituent of the brush bristle material, contributes to the polishing, and the main constituent of the brush bristle material is the abrasive particles. It is a kind of binder that holds, and has the role of transmitting the force necessary for the polishing operation to the abrasive particles.

The total energy of the brush bristle material during polishing is the sum of the work energy of the abrasive particles and the friction energy of the brush bristle material. The breakdown of the work energy is the polishing of the abrasive particles. Energy involved,
Heat energy, sound energy, vibration energy, and the like, and the breakdown of the friction energy includes energy related to wear of the brush bristle material, heat energy, sound energy, vibration energy, and the like.

As is apparent from the above, in the brush roll of the type having the brush bristle material, the total energy of the brush bristle material at the time of polishing is the energy related to the polishing of the abrasive particles for the purpose of polishing the brush roll. It is a good thing, and everything else works negatively.

In other words, when the brush bristle material is of this type, a large energy loss is involved in the polishing operation. The present invention also aims to reduce this energy loss.

[0011]

Means for Solving the Problems To solve the above problems, the present invention relates to a sliding agent carrier for supporting a sliding agent, which comprises mixing a sliding agent carrier supporting a sliding agent together with abrasive particles into polyamide or its alloy compound. Then, those having a heat resistance of 300 ° C. or higher and a particle size of 1/1000 to 1/10 μm are applied. As a slip agent carrier that carries a slip agent, a metal working oil marketed under the trade name of Basco 1000 (a product of Brother Swiss Lube Japan Co., Ltd.)
Can be illustrated. The slip agent carrier is mixed in the resin composition in an amount of 0.1 to 10% by weight, and the abrasive particles are mixed in an amount of 2 to 40% by weight.

The term "slipping agent" as used herein refers to an agent that improves the sliding of the friction surface between the brush bristles and the strip or reduces the friction surface when the brush roll is polishing the strip. . This also applies to the claims and the following description. As the slip agent, KF96 (product name of Shin-Etsu Chemical Co., Ltd.) can be exemplified.

In order to prepare the sliding agent carrier carrying a sliding agent and the brush bristle material of the present invention containing abrasive particles, in addition to the abrasive particles in the resin composition, a predetermined sliding agent carrier carrying a sliding agent is also used. With the exception of mixing, it is possible to apply the same specifications as those for spinning a known polyamide filament brush bristle material containing abrasive particles by a conventional melt extrusion spinning method.

In the present invention, the brush bristle material may be provided with a cover ring by wrapping a resin filament of polyamide or the like around the periphery in a spiral shape or braiding in a braided shape to set a resin, or without such a cover ring. It may be one.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 is a brush bristle material of a brush roll R for polishing a strip. The brush bristle material 1 is made of a predetermined resin composition in which a predetermined amount of a slide agent carrier having a predetermined heat resistance and a predetermined particle diameter for carrying a slip agent and a predetermined amount of abrasive particles are mixed according to the above-mentioned specifications.

The obtained brush bristle material 1 may be mounted on the shaft 3 of the brush roll R in the form of a bristle implant disk 2 as shown in FIG. The flocked disc 2 can be mounted on the roll shaft 3 in the same manner as in the conventional case.
The bristles of the brush bristle material 1 on the disk 2 may be transplanted in the same manner as in the conventional case.

Polishing a strip with a brush roll using the brush bristle material of the present invention provides the following.

When the brush bristle material contains abrasive particles, the blending ratio of the abrasive particles is limited in order to obtain the required strength of the brush bristle material. When the blending ratio of the abrasive particles satisfies this, the resin portion occupying the majority of the tip surface of the brush bristle contacts the strip surface and slides, and the polishing rate of the abrasive particles is small. This is the main factor that increases the rotational resistance of the brush roll during strip polishing. According to the present invention, this point is improved. The details are as follows.

At the time of polishing, at the tip surface of the brush bristle material 1 that comes into pressure contact with the strip, the slip agent in the slip agent carrier of the tip surface is administered to the polishing site. Therefore, the sliding or lubricity of the sliding surface at the tip of the brush bristle material 1 is considerably improved. By the way, it was confirmed that the brush bristle material of the present invention consumes only about 1/2 of the power consumption of the brush roll driving motor in order to obtain the same polishing result as compared with the conventional brush bristle material. It was also found that the durability of the brush roll bristle material is considerably improved.

Moreover, since the sliding agent is contained in the brush bristle material in the form of being carried by the sliding agent carrier, it is directly administered in the form of being replenished to the polishing site one after another as the brush bristle material wears. Therefore, the improvement of the sliding property or the lubricity and the improvement of the durability can be effectively achieved.

The slip agent carrier carrying the slip agent according to the present invention is required to have a particle size of 1/1000 to 1/10 μm. If the particle size is larger than this range, the sliding agent carrier carrying the sliding agent is not mixed well into the resin composition, and the desired effect is hardly obtained. The reason why the sliding agent carrier carrying the sliding agent is one having a heat resistance of 300 ° C. or higher is to achieve the intended preparation of the brush bristle material by the melt extrusion spinning method without any trouble.

The amount of the sliding agent carrier carrying the sliding agent mixed in the resin composition is 0.1 to 10% by weight. If it exceeds this range, the brush bristle material is likely to be broken, resulting in significant deterioration of physical properties, and if it is less than the range, the required polishing property is hardly obtained.

The amount of abrasive particles mixed with the resin composition is 2 to 40% by weight. If it exceeds this range, the brush bristle material is likely to be broken before it can be put to practical use.

When the filament yarn obtained by spinning the polyamide or its alloy compound mixed with the slip agent carrier carrying the slip agent and the abrasive particles is stretched, the orientation of the resin molecules by stretching is good. As a result, the bristle resistance of the brush bristle material becomes more than sufficient.

[0025]

The present invention is carried out in the form described above, and has the following effects. In the brush roll of the type described first with respect to the brush bristle material, the power consumption of the brush roll drive motor can be reduced to about half that of the conventional brush roll without lowering the polishing result, and the durability of the brush roll can be improved.

In this way, the power consumption of the brush roll drive motor can be reduced to about 1/2 of that of the conventional one without lowering the polishing result, and the application of the sliding agent carrier according to the present invention can reduce the energy loss of the brush bristle material. This is proof that it also contributes to reduction. Furthermore, it reduces the load on the brush bristle material and also prevents yarn breakage, reduces the heat generated by the brush bristle material, reduces the cost required to cool the brush roll, and saves labor in the mechanism.
It is also possible to prevent softening of the brush bristle material due to temperature rise (prevention of yarn breakage) and reduction of wear of the brush bristle material.

[Brief description of drawings]

FIG. 1 is an enlarged perspective view showing an example of a brush bristle material of the present invention.

FIG. 2 is a perspective view of a disk which is an example of a brush roll element in which the brush bristle material of the present invention is applied.

FIG. 3 is a front view showing an outline of a brush roll made by using the brush element shown in FIG.

[Explanation of symbols]

1 brush bristle material 2 Flocking disk that is a brush element 3 roll shaft R brush roll

Claims (3)

[Claims] 1. A polyamide or its alloy compound carrying a sliding agent and having a heat resistance of 300 ° C. or higher and a particle size of 1/100.
A brush bristle material for a brush roll, which is produced by mixing 0.1 to 10 μm of a slip agent carrier and 0.1 to 10% by weight of abrasive particles and 2 to 40% by weight of abrasive particles. 2. The brush bristle material for a brush roll according to claim 1, wherein the brush bristle material is one in which resin molecules are stretched and oriented in a length direction. 3. A brush roll provided with the brush bristle material according to claim 1.