JPS5831736A - Manufacture of rubber vibration insulator and apparatus therefor - Google Patents

Abstract

PURPOSE:To simplify the production operation of a rubber vibration insulator, by parting a space of a cylinder by a partition having an opening into two sections, injecting liquids therein, putting a flexible rubber thin film over the liquid to cover the liquid, and making said part over the thin film gas-sealed. CONSTITUTION:The space defined by a lower plate 2, an annular rubber body 6 and an upper plate is provided with a partition 8, which has an opening 8a. Liquids[liquid (C) and liquid (B)]are introduced in the thus formed spaces. Then the flexible rubber thin film 9 is put over the liquid (B). While this assembly is put in a sealed container 20 in a highly pressurized space, a lid 10 is arranged thereon to form a gas chamber (A).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a method and apparatus for producing a vibration isolating rubber having liquid and gas damping effects.

In recent years, anti-vibration rubber has come to be used as anti-vibration rubber for engine mount capes, which has a damping effect that skillfully utilizes liquids, gases, and damping. As for the characteristics of such anti-vibration rubber, it is desirable that it has a damping ability in order to reduce the vibration transmissibility for large amplitude low-frequency vibrations, while on the other hand, in the case of high 1IIIl vibrations of Kogawa, On the contrary, it is desirable to have no damping ability in order to lower the vibration transmissibility, and the performance of the anti-vibration rubber 12J is also required to have such characteristics accordingly. 1N/Figure is the damping effect of liquid and gas. This shows the basic #1 structure of anti-koji rubber, with upper and lower tip-shaped metal fittings.
An annular rubber elastic body 102 is glued between oo and tot, an 9-face 103 is bored in the bottom plate 100m of the top-shaped metal fitting lOO, and a bowl-shaped rubber elastic body 104 is attached in the recess of the top-shaped metal fitting lOO. ! is attached, and an upper plate lOj is attached to cover the top-shaped metal fitting Iort. Upper play) An air chamber 111m is formed between lOj and the rubber elastic body lOj, and a housing 111m is formed between the rubber elastic body to41c and the rubber elastic body to41c and the rubber elastic body lOko and the rubber elastic body lOko. Liquid l between AIO/
! The liquid chambers B and O are connected by Oliquid lO3, both chambers are filled with incompressible liquid, and high-pressure gas is sealed directly into the air chamber, which is separate from both chambers. The high-pressure gas in the air chamber was sealed through the pulp lotrt provided on the upper plate lOj. In such a *-built vibration isolating rubber, since the pulp 101 is attached to the upper plate lOj, manufacturing is complicated and the cost is also high.
Its production also had drawbacks such as an increase in the number of steps and troublesome processing. This invention was invented in view of the above circumstances,
Special 111! III easily, quickly, and at low cost without any hassle! The object of the present invention is to provide a method for manufacturing a vibration isolating rubber that can easily increase the air pressure in an air chamber, and an apparatus for manufacturing a liquid-filled vibration isolating rubber filled with high-pressure gas. .

Below, preferred embodiments of the manufacturing method and apparatus according to the present invention will be described with reference to the drawings.As the first step in manufacturing vibration-proof rubber, the lower plate in which the mounting bolts are implanted)2 and an upper plate J in which an assembly bolt 3 is implanted and a hole hole is drilled in the center are placed at a predetermined position in a rubber vulcanization mold, and the hole diameter is approximately the same as that of the hole hole in the upper plate S. The annular rubber body 6 is vulcanized and molded to form a cylindrical body having an inner cylinder 7rt (see FIG. 2). As the next IIJ process, liquid is injected into 1mw7, and the center is lower plate 2.
Partition plate J with oriice holes l& that protrudes toward
Attach to upper plate j (see IIJ, Figure 1). This partition plate l is formed in the shape of an upside-down brimmed hat,
The two halves are locked to the edge of the cavity of the upper plate S, and the cavity ra7 is divided into two by attaching this partition plate l. Roughly, as a third step, a bowl-shaped flexible rubber thin film is attached to the upper plate j so that the center thereof protrudes toward the orifice hole 11 and covers the liquid surface, thereby forming a continuous two-layer film through the oriice hole Ja. two liquid chambers B,
Forms 0 (see 3rd figure). Next, the semi-finished product manufactured in the 18J process is placed under high pressure gas and the flexible rubber thin mlk? A lid l that forms a sealed airspace between
Ct flexible rubber thin film 9 is placed around the base 9&, this lid body lO and the upper plate! and f:m, and high pressure gas is sealed in the air chamber between the two (first step).

The Boqin rubber manufactured by the above-mentioned steps 1 to 3 has 81 types of III structure in the 1st to 3rd grade, and has partition plate I and flexible rubber thin II? is the upper play) between j and the lid body 10! 1lIII&-A space 7 surrounded by the lower plate, the annular rubber body 6, and the lid 10 has a partition plate l
and a flexible rubber thin film 9, which separates the air chamber and liquid chambers B and C into three parts.◎The lid 10 is attached to the upper plate S.
Insert the assembly pullet 3 implanted into the hole // of the lid body 10 and fasten it with the nut (J).

As a suitable device for manufacturing the anti-vibration rubber shown in FIG. 4c, we have developed the device shown in FIG.
Attach the partition plate 1 & U flexible rubber thin film 9 to the upper plate j, and apply liquid 1! B and O filled with liquid are set in an airtight container 2θ, and a vertically movable support device 21 is installed in this airtight container 2θ, and the support device 21 supports the urn body 10 on the upper plate In this state, high pressure gas is injected from the injection port 2o & of the closed container 20, and the T support 1 is supported above the IIWs container 20 under high pressure gas.
1 device 2/t- is operated to press the lower part of the arm 23 against the upper plate j of the pot 10, thereby sealing high pressure gas into the air chamber.

・More specifically, a stand IJ Hiro is installed on the base 23',
A semi-finished anti-vibration rubber product is placed on this stand WA21. Then, it is installed on the channel-shaped pedestal 2jt base 23' so as to surround this pedestal 11A2ψ and the semi-finished product, and the pedestal 2
A drive device 2B for vertically moving the arm λ71 of an air cylinder device, etc. is installed on top of the frame j, and an arm 23 such as a cylinder that can be moved vertically by this drive device λ6 is attached to the frame coj.
A support portion 22f is formed which projects downward from the arm 23 and has a magnet or the like attached to the lower end of the arm 23. The support portion λ2 supports the bag body 10 (1111). The airtight container 20 is placed over the support device 1 and the pedestal 2S, and sealed tightly! - The lever between the container 20 and the base 23' is operated in order to maintain airtightness. When the inside of the sealed container 20 is under high pressure gas, the drive device 2trt of the support device 21 is operated and the arm-J Lower the lid and place it tightly on top of the closed container 2.
0 is sealed in the air chamber, and then the airtight container 20 is raised to separate the lid 10 and the upper plate 5 by 8 my.As explained above, the manufacturing method according to the present invention is as follows: A lower plate) and an upper plate with a hole in the center are placed at a predetermined position in a rubber vulcanizer, and an annular rubber body with a hole diameter approximately the same as the hole in the upper plate is vulcanized. A cylindrical body rt-shaped with a space tt*V inside is formed, a liquid is injected into this space, and a partition plate with an orifice hole T whose center protrudes toward the lower plate is attached to the upper plate. The space [is divided into two parts], and then a flexible rubber thin film is attached to the upper plate so that its center protrudes toward the oriice hole and covers the liquid surface tTi, forming two continuous i [tortoises] by the oriice hole, and then Later, while placing this under high pressure gas, a lid body that forms a sealed air space between the flexible rubber thin film and the flexible rubber thin film is placed on the ms base of the flexible rubber thin film, and the integral and upper plate rtli are placed.
The feature is that high-pressure gas is sealed in the air chamber formed between the two. Therefore, unlike conventional products, there is no need to provide pulp, so there is no need to worry about gas leakage due to deterioration of the pulp, the manufacturing process is also simplified, and the structure of the anti-i5 itself is unique. The shape, especially the shape of the metal fittings with pulp, is no longer necessary.
As a result, manufacturing is also easy and quick. In addition, it is easy to increase the pressure inside the air chamber, and once the gas is enclosed, it serves as the base or center of the flexible rubber thin film, so the reliability of the seal is extremely high. , there is almost no change in the characteristics of the anti-vibration rubber due to gas leakage.

Further, according to the manufacturing apparatus according to the present invention, the annular rubber body is attached to the upper and lower plates, and the center of the annular rubber body protrudes from the hole bored in the center of the upper plate into the space solidified by the annular rubber body. A partition plate and a flexible rubber thin film are attached to the upper plate as shown in FIG. a support device provided on an arm that supports a support part such as a lid facing the upper plate and is movable up and down; The airtight container is filled with high pressure gas and the arm of the support device is lowered to press the lid against the base of the flexible rubber thin film. A high-pressure gas is sealed between the thin film and the bladder body, and then the lid body and the upper plate are bonded to each other. can be manufactured. In addition, the device itself has a simple structure, and the arm of the support device presses the lid against the surrounding base of the flexible rubber thin film, so even if the sealed container is removed in this state, the lid and flexible There is no need to worry about leakage of the high-pressure gas sealed between the rubber thin film and the work of fixing the lid and upper plate F is easy.Furthermore, a magnet is attached to the support and the magnetic force of the magnet attracts the lid. In this case, the lid can be easily supported and released, and workability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a sectional view of a state in which an annular rubber body is attached to the upper and lower parts of the flll in the manufacturing method of the present invention, and Fig. 3 is a sectional view showing a partition plate and a flexible rubber thin film. The cross-sectional view of the installed state, 1h reference is 1 manufactured by the method of the present invention.
FIG. 5 is a cross-sectional view of a completed product of NK-treated anti-pregnancy rubber. FIG. 5 is a cross-sectional view showing a preferred embodiment of the manufacturing apparatus of the present invention. K...lower plate, 3...hole, ! ... Upper plate, 6... Annular rubber body, 7... Space, l... Partition plate, 11... Orifice hole, 9... Flexible rubber thin film,
9 &... Surrounding base, lO... Lid, 20... Airtight container, 2/... Support device, 22... Support part-23.
...Arm, 231...Base, Mu...Air chamber,
B, O...Liquid chamber @ 11 people Brideston Tire Co., Ltd. agent Patent attorney Take Masukawa Youngest brother 1 Figure 3

Claims (1)

[Claims] t. The lower plate and the upper plate with a 1 iF stepped hole in the center are arranged at a predetermined grain size tll in a rubber vulcanization mold, and the pores have approximately the same diameter as the holes in the upper plate. A cylindrical body with a space inside is formed by vulcanization molding of a cone-shaped rubber body, a liquid is injected into this space, and a partition plate having an orifice hole whose center protrudes toward the lower plate is attached to the upper plate. Then, a flexible rubber thin film is attached to the upper plate so that the center thereof protrudes toward the orifice hole and covers the liquid surface, forming two liquid chambers connected by the oriice hole. Then, while placing this under high-pressure gas, a lid that forms a sealed air space between it and the flexible rubber thin film is placed on the peripheral base of the flexible rubber liI, and the mass and the upper plate are fixed. A method for producing a vibration-proof rubber, characterized in that a high-pressure gas is sealed in an air chamber formed between the two. 2. Between the upper and lower plates & - shaped rubber bodies are scattered and partitioned into the upper plate so that the center protrudes into the space surrounded by the annular rubber body from a hole bored in the center of the upper plate. a base on which a semi-finished product is placed, on which a plate and a flexible rubber thin film are attached, and a liquid is injected into two liquid chambers that are continuous through the central and shaded orifice holes of the partition plate; and an upper plate. A support device is provided on an arm in which a support part that supports the lid body is vertically movable, and a support device that is placed over the semi-finished product and the support device cooperates with the base to maintain the inner m' under high pressure gas. The sealed container is filled with high-pressure gas, and the arm of the support device is lowered to press the lid against the ma base of the flexible rubber thin film to separate the flexible rubber thin film and mass. Manufacturing device for vibration isolating rubber, characterized in that high pressure gas is sealed between the metal body and the upper plate. The anti-vibration rubber wrapping W1 hook holder according to claim 2, characterized in that the lid is attracted by magnetic force.