JPS6165914A - Method of fabricating sealant for bearing - Google Patents

Abstract

PURPOSE:To remarkably enhance the adhesive effect between an elastic body and a core body by giving irregular patterns to an annular material and baking and forming an elastic material to the desired shape, thus forming a sealant. CONSTITUTION:A metallic material 3 is sent to an irregular pattern forming stage 13, in which continuous or discontinuous irregular patterns D are formed on the surface of the material 3. Then the material 3 goes to a stamping stage C so as to be formed into an annular core material 1 having a desired shape. Next, the annular core material 1 is covered with an elastic body 2 to an integrated body, thus forming a sealant A. Accordingly, adhesive effect between the elastic body and the core material can be enhanced remarkably, and at the same time adhesive sticking of sealants to each other can be prevented.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method for manufacturing a sealing material containing a reinforcing core material, and more specifically, to a method for manufacturing a sealing material containing a reinforcing core material, and more specifically to a method for manufacturing a sealing material containing a reinforcing core material, and more specifically, to improve the adhesiveness and sealing between the core material and a sealing elastic body. This invention relates to a method for producing a sealing material for bearings that greatly improves the antiprofiling and kingability of materials.

[Conventional technology]

Bearing sealing material is installed between two mutually rotating members and serves to seal the inside and outside of the two members. It generally has a core material that is integrated with the elastic body and reinforces it from the inside.0 [Point m that the invention attempts to solve] This core (O naturally reinforces the sealing material. However, what is even more important is the adhesion between the core material and the elastic body.In other words, if the adhesion between the two components is poor, not only will the product quality be significantly inferior, but the The sealing lip, which is made of an elastic material, does not make contact with the correct sliding surface and leaves a gap, causing a sealing failure, or conversely, there is a high risk of over-contacting, causing heat generation and damage. This is a fatal flaw as a material.

In order to solve this problem, a complicated process was required, which required a complete preparation of the metal surface to be bonded, a highly controlled adhesive, and a bonding process, resulting in a price disadvantage.

[Means for solving problems]

The present invention eliminates these drawbacks, greatly improves the adhesion between the elastic body and the core material using a simple and inexpensive method, and furthermore prevents the blocking phenomenon between the finished sealants. The purpose of this invention is to provide a method for dispensing sealants.

Hereinafter, the present invention will be described in detail with reference to the drawings. As shown in FIG.
This is a method for manufacturing a bearing sealing material A made of an elastic body 2 such as synthetic rubber or synthetic resin that covers the bearing. After supplying it to process B and forming an uneven pattern that is continuous or discontinuous on the surface, a ring core material 1 of a desired shape is obtained through punching process ○, and the ring core material 1 is The sealing material A is formed by integrally covering the elastic body 2. Figures 2, 6, 4, and 5 show each characteristic part of this structure in more detail, and the uneven pattern forming process B shown in Figure 2 is explained in detail. Then, the forming device in the step m is not required to be accurate in the marking position on the metal material 6, and may be any device that can simply form individual small uneven patterns, and therefore the compression shown in FIG. 2 is sufficient. There is no need to limit the method, as a roll rolling method in which the material is passed between rotating rolls, which has low precision but has a high molding speed, will suffice, so there is no need to limit the method. Thereafter, a punching shape O is formed using a butt wall or a mold as shown in FIG. 6 to obtain a ring core material 1 having a large number of uneven patterns on its surface as shown in FIG. The material 1 is subjected to a base treatment and the elastic body 2 is integrally coated thereon to form a sealing material A shown in FIG.

[Effect]

The sealing material A formed with the above structure has many excellent functions as follows. In other words, a randomly continuous uneven pattern can be formed at a sufficiently satisfactory speed with a simple device such as the one described above. 1 shape has no restrictions on the shape or position of the uneven pattern formed on its surface, so punching can be done in a short time and at an advantageous position with the least amount of material loss. A ring core material 1 having an uneven pattern on one side as shown in Fig. 4 is obtained. The ring core material 1 obtained in this way has a large number of protrusions and depressions scattered on its surface, which enlarges the surface area of the ring core material 1 itself. Since the protruding parts form gaps between each other, it has a particularly advantageous structure for passing liquid processing agents, etc. Furthermore, its surface is moderately rough, so it can be used for post-processing (e.g. degreasing, adhesive application, dry baking). It not only greatly improves workability by allowing processing to be carried out easily, but also improves the finished state of each processing.
Sealing material A that eliminates adhesion defects such as peeling of elastic body 2 as shown in the figure
can be obtained.

At this time, when the elastic body 2 covering one or both sides of the ring core material 1 is vulcanized and bonded, the surface of the mold cavity surrounding the elastic body 2 of the covered portion is a smooth surface. The surface of the sealing material A after molding is the ring core material 1 located below it.
Because it has the characteristic of leaving a considerable amount of unevenness, it becomes a rough surface and loses its smoothness, and has the effect of greatly reducing the adhesiveness of the elastic body 2, so that there is no danger of overlapping the sealers together. It also provides an adhesion prevention effect.

Note that the shape and size of the uneven pattern must be within a range that is thinner than the thickness of the sealing material A, depending on the desired rigidity, size of the ring core material, processing workability, etc. Various shapes such as dolls may be selected, and if the shape is formed into a concave-convex pattern that protrudes only on one side, a good effect on alignment can be obtained.

(Effects of the Invention) As explained above, the present invention greatly improves the adhesive force between the elastic body and the core material by simply forming a simple pattern on the core material, and also improves the adhesive strength between the completed sealants. This is an excellent method for producing a sealing material for bearings that is effective in preventing this.

[Brief explanation of the drawing]

FIG. 1 is a manufacturing process showing a method for manufacturing a bearing sealing material of the present invention. FIG. 2 is a sectional view of the uneven pattern forming process of the present invention. FIG. 6 is a sectional view of the punching and forming process of the present invention. FIG. 4 is a partially cutaway perspective view of a ring core formed according to the present invention. FIG. 5 is a cross-sectional view of a bearing seal formed according to the present invention.

Claims (1)

[Claims] In a method for manufacturing a bearing sealing material consisting of a ring core material formed of metal and an elastic body such as synthetic rubber or soft synthetic resin covering the ring core material, unevenness is formed on one or both sides of a plate-shaped or band-shaped metal material. After the pattern is formed, the ring core material is punched out into the desired ring shape, and the ring core material is subjected to post-processing such as applying adhesive, and an elastic material is baked or shaped into the desired shape to produce the bearing. A method for producing a sealing material for a bearing, the method comprising forming a sealing material for a bearing.