JPH0215853Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a rubber ring that fits onto a roller of a belt conveyor.

For example, as shown in FIG. 1, the belt conveyor winds a belt 2 between a plurality of pulleys 1, 1,
Normally, impact rollers 4, 4 are provided on the back side of the belt 2 where the conveyed objects 3, 3 fall, and carrier rollers 5, 5 are disposed in the conveying direction, and a return roller is provided for returning the belt 2 to conveyance. 6,6 is generally provided.
Conventionally, a plurality of rubber rings have been fitted to the rollers 4, 5, and 6 in order to prevent wear and provide appropriate cushioning properties between the belt and the rollers. When using coke, sintered ore, ore, etc., the rubber ring itself wears out quickly, resulting in the drawback that it is not possible to sufficiently prevent roller wear.

As a solution to the above-mentioned drawbacks, a cast ring is sometimes used in place of the rubber ring, but this ring is undesirable because it is heavy and can break. Therefore, a method has recently been developed in which ceramic powder is mixed with synthetic resin and molded, and the molded product is fitted onto the retan roller 6, which is subject to particularly severe wear (FIG. 2). According to this resin ring 7, the abrasion resistance is certainly improved, so in that sense, the drawbacks of the conventional ring have been solved. However, due to the structure of this ring 7, the surface is essentially uneven, so debris from transported objects adheres to this, and the outer diameter of the ring bulges out in a lump-like manner over time. This resulted in new drawbacks.

The present invention was made under the above circumstances for the purpose of providing a rubber ring for a conveyor roller that has wear resistance and can be manufactured at low cost. That is, in the rubber ring of the present invention, the bottom part of the ceramic plate is embedded in the rubber ring body during molding of the rubber ring body, and the rubber ring is formed on the outer circumferential surface of the rubber ring body and on the inner side of both end edges. It is fixed. The present invention will be explained below based on an illustrated embodiment.

The rubber ring for conveyor rollers of the present invention is the third
As shown in FIG. 4, the rubber ring body 10
A finely divided ceramic plate 1 is placed on the outer peripheral surface 11 of the
2 and 12 are provided.

The ceramic plates 12, 12 are preferably provided over the entire circumference of the outer circumferential surface 11. Further, in this example, the ceramic plates 12 have a rectangular shape, and are arranged in four horizontal rows so as to slightly protrude from the outer circumferential surface 11. However, the shape of the ceramic plates 12, how they are arranged, and whether or not they protrude from the outer circumferential surface 11 may be arbitrarily determined according to the intended use of the ring, and are not limited to those of the illustrated embodiment. Needless to say, there is no such thing.

Further, in this example, the ceramic plates 12, 12 are pressed onto the outer circumferential surface 11 of the rubber ring main body 10 during the vulcanization process. This will be explained with reference to FIG. 5. This is an example of press vulcanization, in which a mold 13 corresponding to one side surface of a rubber ring main body (not shown) forms a central cavity of the main body. A mold 14 and a half-split mold 15 corresponding to the outer peripheral surface of the main body are installed. A wide groove 15a is formed in the mold 15, and this groove 1
Ceramic plates 12, 12 are placed in advance at the portion 5a. A rubber ring main body formed in an unvulcanized state is attached to this, and pressed with another mold 16, the rubber ring is vulcanized and manufactured into a product.
In this way, during vulcanization, the ceramic plates 12, 1
When crimping 2 at the same time, press the ceramic plate 12
It adheres extremely well and reliably to the outer circumferential surface 11 of the main body, and there is no need for a separate adhesion process as in the case of adhesion with adhesive or other methods, and therefore the manufacturing process It is possible to realize labor saving. Another method of crimping the ceramic plates 12, 12 during vulcanization is to press the ceramic plate onto the outer circumferential surface of the unvulcanized rubber ring body using cloth, string, etc., and then integrate them by batch vulcanization. A method such as crimping may be used.

As explained above, the present invention is a rubber ring that fits on the roller of a belt conveyor, and the bottom part of the ceramic plate is embedded in the rubber ring body when the rubber ring body is molded. Since the rubber ring is fixed to the outer circumferential surface of the rubber ring body and to the inner side of both end edges, it is possible to prevent the rubber ring itself from being worn out, and it is also possible to sufficiently prevent wear of the conveyor roller. Since the ring body is made of rubber, it has elasticity and can provide appropriate cushioning between the belt and rollers.Furthermore, the ceramic plate has a small coefficient of friction, so it is easy to prevent debris from being conveyed. Adhesion can also be prevented. Above all, it has an economical advantage in that the rubber ring for a conveyor roller of the present invention can be easily manufactured by simply placing a ceramic plate in a mold in a conventional rubber ring manufacturing process.
Furthermore, since the ceramic plate is fixed to the inner side of both edges of the rubber ring body, external force is applied to the ceramic plate from the surface. Therefore, external force from the side of the ceramic plate is applied to the edge of the rubber ring body. It is absorbed by the edge portion, and this prevents the external force from acting in the direction of removing the buried ceramic plate, which stabilizes the adhesion of the ceramic plate and improves the long-term life of the rubber ring of the present invention. It becomes possible to use it.

[Brief explanation of the drawing]

Fig. 1 is a conceptual configuration diagram of a belt conveyor, Fig. 2 is a side view showing a state in which a resin ring is fitted to a roller, Fig. 3 is an external perspective view showing the rubber ring of the present invention, and Fig. 4 is a third XX sectional view in the figure, and FIG. 5 is a longitudinal sectional view showing a mold part used in press vulcanization of the rubber ring of the present invention. 1... Pulley, 2... Belt, 4, 5, 6...
Roller, 10...Rubber ring body, 11...Outer peripheral surface, 12...Ceramics plate.

Claims (1)

[Scope of utility model registration request] This is a rubber ring that fits on the roller of a belt conveyor, and the bottom of the ceramic plate is embedded in the rubber ring body during molding of the rubber ring body, and a finely divided ceramic plate is formed on the outer peripheral surface of the rubber ring body. A rubber ring for conveyor rollers that is fixed on the inside of both edges.