JP3280068B2 - Manufacturing method of multilayer rubber material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a multilayer rubber material in which a constraint material such as a fiber which can be used as a support material or a cushioning material for bridges, roads and general structures is embedded.

[0002]

2. Description of the Related Art As a multilayer rubber material obtained by laminating a state in which a restraining material such as a fiber is buried in rubber, there is a material generally used for a belt such as a pulley. As shown in FIG. 1, the rubber 2 is superimposed on the restraining member 1 and rolled by a roller 3 to press the rubber 2 on both surfaces of the restraining member 1 to be integrated. Further, the constraining member 1 is superimposed on the constraining member 1 in which the rubber 2 is rolled, and the rubber 2 is rolled and laminated by the roller 3 in the same manner as described above. It is a buried multilayer rubber material.

Further, as a support material such as a structure made of a multilayer rubber material, there is a material in which a rigid body such as an iron plate is embedded in rubber.

[0004]

The multilayer rubber material in which a restraining material such as a fiber is buried in the above-described manner has a compression force of about 10 kgf / cm ² at the maximum. Up to six layers are the limit, and no more multilayer rubber material can be obtained. Therefore, 10
When using a multilayer rubber material such as a layer or 15 layers,
The laminated rubber material of the above 5 to 6 layers will be used by overlapping, but the overlapping portion is different from the laminated portion where the restraining material is buried, the rubber layer is directly overlapped and doubled, and the restraining material is interposed therebetween. Therefore, there is a problem that the elasticity of the place is not uniform unlike the other layers, and the load tends to be inclined from the place or to be displaced from the joint place when the load is imbalanced.

Further, according to the multilayer rubber material in which the rigid body is buried, when the support object has an inclination or a protrusion, a concentrated load phenomenon occurs in the inclination direction or the protrusion, and the balance is lost or the support state cannot be maintained. There's a problem.

[0006]

According to the present invention, a laminated material is formed by pressing rubber on both sides of a constraining member made of fibers or the like, and a laminated material obtained by laminating a predetermined number of such laminated materials is placed in a mold and pressurized. Then, rubber is press-fitted into the space around the inside of the mold, and the periphery of the laminated material is covered with the rubber so as to be integrally formed, and then vulcanized to form a multilayer rubber material.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1 is an explanatory view of a rolling process, FIG. 2 is an explanatory view of a state in which a predetermined number of sheets are stacked, FIG. 3 is an explanatory view of a state of being housed in a mold, and FIG. 4 is an explanatory view of a state in which rubber is injected after pressing. Yes, in FIG. 1, a woven fabric made of natural fibers or chemical fibers,
A rubber 2 is superimposed on a constraining member 1 which has been subjected to a pre-adhesion treatment with a nonwoven fabric or a metal net, and rolled by a roller 3 to press the rubber 2 on both surfaces of the constraining member 1 to form a laminated material 4.

[0008] A predetermined number of the laminated materials 4 such as 1
Five sheets are cut into a predetermined size and laminated, and the laminated material 5 is housed in a mold 6 and pressed at, for example, about 50 kgf / cm ² .
Due to this pressurization, the rubber laminated on the restricting member 1 can more firmly bite into the fibers and the mesh and push out the fibers and the air in the mesh to obtain a more intimate state. In this case, rubber may be added to both upper and lower surfaces for protecting the outer surface or for covering.

The mold 6 of the laminated material 5 pressed as described above
A rubber member 7 selected from the same or similar polymer or a polymer that can be bonded to the rubber and selected according to the purpose is press-fitted into the inner peripheral space and exposed to the peripheral surface of the laminated material 5. Cover the entire circumference of the end face. This is to prevent water or air from entering the laminate 4 from the restraint 1. Thereafter, vulcanization is performed to obtain a multilayer rubber material according to the present embodiment.

As described above, a material having a high Young's modulus, such as Kepler, which does not have very good adhesion to rubber, is used in order to press a laminated material obtained by laminating a predetermined number of laminated materials before vulcanization into an integrated structure. However, it is possible to improve the adhesive force by physically digging in with a large pressing force and to use it.

[0011]

According to the present invention described in detail above, rubber is pressed onto both sides of a restraining member made of fibers or the like to form a laminate, and a predetermined number of such laminates are stacked in a mold. Pressurize, press rubber into the space around the inside of the mold, cover the periphery of the laminated material with the rubber, and unite completely,
After that, vulcanization was performed to obtain a multilayer rubber material.
Even when there are zero or more layers, the integrity of the laminated constraining members and the rubber is ensured, and as a result, there is an effect that desired elastic properties can be maintained as a whole.

Further, since the restraining material is different from a rigid body and has a physical constant close to that of rubber, it is considered that the entirety is a single material, and it is possible to absorb eccentricity and protrusions and to always support the entire load. This has the effect that a reliable spring bearing can be obtained. In addition, it has a vibration insulating effect, and has an effect of reducing noise when used as a support material for railway bridges.

Further, if the restraining member is made of a rigid body, there is a concern that the coating thickness may become thin due to manufacturing errors or intersections, or that electrical adverse effects or corrosion may occur due to missing after use. According to the present invention, since the restraining material is a fiber, such a situation is completely avoided, and there is an effect that a durable and stable bearing material is obtained. In addition, the shape can be a desired shape such as a curved surface or a cylindrical shape other than a planar shape, and the spring characteristics can be arbitrarily determined by selecting the number of laminated materials, fiber strength, rubber hardness, and the like. Since it can be determined, there is an effect that the shape can be formed according to the installation location.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a state in which a laminate is manufactured.

FIG. 2 is an explanatory view of a state where a laminate material is cut and laminated.

FIG. 3 is an explanatory view of a state in which a laminate material is pressed by a mold.

FIG. 4 is an explanatory view of a state in which rubber is pressed into a space around the inside of a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Restraint material 2 Rubber 3 Roller 4 Laminate material 5 Laminate material 6 Die 7 Rubber

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification code FI B29L 31:10 B29L 31:10 (72) Inventor Nobuyasu Ikoma 1058 Nakao, Uozumi-cho, Akashi-shi, Hyogo Pref. Inventor: Yu Inaya, 1058 Nakao, Uozumi-cho, Akashi-shi, Hyogo Prefecture Inside Shibata Industry Co., Ltd. (56) References JP-A-4-251714 (JP, A) JP-A-4-140526 (JP, A) (58) ) Field surveyed (Int. Cl. ⁷ , DB name) B29C 43/00-43/58 B29C 35/02-35/14 E04B 1/36

Claims (1)

(57) [Claims] 1. A rubber material is pressed on both sides of a constraining member made of fibers or the like to form a laminated material. A laminated material obtained by laminating a predetermined number of the laminated materials is placed in a mold and pressurized, and a space around the inside of the mold is pressed. A method of manufacturing a multi-layer rubber material, comprising press-fitting a rubber into the rubber material, covering the periphery of the laminated material with the rubber so as to be integrally formed, and thereafter vulcanizing the multi-layer rubber material.