JPS60262627A - Preparation of rubber vibration insulator with metallic housings - Google Patents

Abstract

PURPOSE:To obtain the titled rustless rubber vibration insulator that can be heat uniformly in a short time by a method wherein a rubber member provided with adhesive agent is forced in between metallic housings and heated by heating medium composed of many glass spherules to harden the adhesive agent. CONSTITUTION:Thermoplastic or thermosetting adhesive agent 7 is applied to the surfaces of the rubber member 6 or metallic housings composed of the pulley rim 1 and the inner hub 3, dried and then pressure liquid 8 is applied to the surface and the rubber member 6 is forced in between the metallic housings 1, 3. Then, this member is locked by the stopper plate 18 at the end of the hanging cable 17 and the cable 17 is hung by the cable 16, but in the heating medium composed of many heated glass spherules in the furnace 10, forced rubber member 6 and metallic housings 1, 3 are heated, the adhesive agent 7 is reacted, hardened and stuck to obtain the desired rubber vibration insulator.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a method of manufacturing a vibration isolating rubber with a metal housing such as a 1-1 national damper booley.

(Prior art) General anti-vibration rubber with a metal housing is produced by applying adhesive to the plate-shaped or ring-shaped vulcanized rubber member for vibration isolation or the surface of the metal housing, and then inserting the same rubber member between the metal housings. The rubber member is bonded to the metal housing by press-fitting the rubber member and then heating and curing the adhesive.

Conventionally, one of the methods for performing this thermal bonding was to perform it in hot air, but due to poor thermal efficiency, it was necessary to raise the temperature of the hot air to a high temperature of 200°C. There was also the problem that the heating time was long and the adhesive deteriorated.

There was also a method of heat bonding by leaving it in a heated mold, but this had the problem that the temperature rise varied depending on the area of the metal housing due to differences in the contact surface and area of the molds.

Further, in the method of performing thermal bonding in a heated liquid, there is a problem that rust may occur on the metal housing depending on the type of liquid.

(Problems to be Solved by the Invention) This invention solves the problems described above, such as poor thermal efficiency, long heating time, different degrees of heating depending on the part, rust formation, etc. This invention solves the problem of the conventional bonding process of vibration-proof rubber with metal housing. This was done to solve the problem of

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the method for producing a metal housing vibration-proof rubber according to the present invention uses a thermoplastic or thermosetting material on the surface of the rubber member or the metal housing. A process of applying and forming the adhesive, a process of press-fitting the rubber member between the metal housings, and a heating medium consisting of a large number of heated glass spheres heats the press-fitted rubber member and metal housing to react with the adhesive. The structure consists of a curing adhesion process.

(Function) This invention heats the rubber member and metal housing after press-fitting using a heating medium consisting of a large number of heated glass globules, and reacts and hardens the C adhesive, thereby uniformly heating the rubber member and metal housing. done in a short time.

(Example) Hereinafter, an example in which the present invention is embodied in a 1-1 national damper pulley will be described with reference to the drawings. In the drawing, 1 is a pulley rim of a damper pulley, which is formed in a ring shape from metal, The inner peripheral surface 2 is a smooth cylindrical inner surface. Reference numeral 3 denotes an inner hub made of metal disposed inside the damper pulley 1. A shaft hole 4 is provided in the center of the inner hub 3, and the outer circumferential surface 5 is spaced apart from the inner circumferential surface of the damper pulley by a small distance. There are smooth cylindrical parts facing each other.

6 is a rubber ring press-fitted and glued between the inner peripheral surface 2 of the pulley rim 1 and the outer peripheral surface 5 of the inner hub 3;
Vulcanized rubber compounded in the weight parts as shown below is used.

Butyl rubber 100 Zinc oxide 5 Stearin 15i 1 H8F carbon black 9゜ Naphthenic professional wrestling oil 2゜ Vulcanization accelerator MBcho S 05 Vulcanization accelerator TMTD 1 Sulfur 2 The inner and outer circumferential surfaces of the rubber ring 6 are filled before press fitting. At step d5, the adhesive 7 is applied and dried, and immediately before press-fitting, a press-fitting liquid 8 is applied onto the dried adhesive 7 by a dipping method. After press-fitting, the press-fitting fluid 8 is absorbed into the rubber ring 6 and the adhesive 7 hardens, so that the rubber ring 6 is firmly adhered to the pulley rim 1 and the inner hub 3.

Here, the adhesive 7 can be an ordinary thermoplastic or thermosetting rubber-to-metal adhesive; for example, Chemlock 25o (trade name of Hewson Chemicals, main component is chloride rubber) is used. ing.

In addition, various press-in fluids such as process oil can be used for the press-in 'a8, but in this example, a low-viscosity aromatic process oil (specifically, manufactured by Fuji Kosan Co., Ltd. under the trade name EPX #1) was used. It is used.

Next, a method for press-fitting and bonding the rubber ring 6 between the pulley rim 1 and the inner hub 3 in the damper pulley configured as described above will be described based on test examples.

First, before press-fitting, adhesive 7 is applied to the surface of rubber ring 6 and dried. This drying method may be air-drying at room temperature or heating in a range below the curing reaction temperature of the adhesive 7 to improve adhesion, but in this example, the front right By natural drying.

Next, press fit the rubber ring 6 into the 8 (room temperature)
Apply the injection liquid 8 on the adhesive 7 by soaking it for a minute, and then apply the injection liquid 8 on the adhesive 7.
Avoid dissolving.

Next, as shown in FIGS. 2 to 4, the in-boot hub 3 is placed inside the degreased pulley rim 1, and while the adhesive 7 is melting, the inner circumferential surface 2 of the pulley rim 1 and the outer circumferential surface 5 of the in-boot hub 3 are heated. During this time, the rubber ring 6 is press-fitted at room temperature. Here, the press-fitting rate (deformation rate due to press-fitting) of the rubber ring 6 is 3
0% What happened? During this press-fitting, since the adhesive 7 on the surface of the rubber ring 6 is moderately dissolved at room temperature, the press-fitting fluid 8 and the adhesive 7 act as a lubricant. Follow-)
Therefore, the rubber ring 6 can be easily press-fitted at low pressure.

Next, the press-fitted damper pulley is heated to approximately 140 to 175°C using the heating device shown in FIG. 6 to prevent the curing reaction of the adhesive 7 from being completed, thereby attaching the rubber ring 6 to the pulley rim 1 and inner hub 3. Glue. here,
The heating device will be described in detail. In FIG. 6, reference numeral 10 indicates the entire heating furnace, and the heating furnace 10 is divided into two layers by a perforated plate 11 attached inside. 12 is a hot air blowing pipe installed in the lower layer of the heating furnace 10,
A plurality of blow-off ports 13 are provided, and hot air of approximately 175° C. supplied from the end is blown out through the holes of the perforated plate 11 to the upper layer of the heating furnace 10 . Numeral 14 is a large number of glass spherules as a heating medium charged into the upper layer of the heating furnace 10, and is a granular material having a diameter of about Q and 2 mm. The glass sphere 14 is heated to about 175°C by the hot air.
It is heated and suspended, making it easy to flow.

Reference numeral 15 denotes an electric heater installed in the upper layer of the heating furnace 10, which serves both to heat the glass spheres 14 and to keep them warm.

Reference numeral 16 denotes a 7jth transfer cable for suspending and moving the damper pulley, and a plurality of suspension cables 17 are attached to the lower end of each suspension cable 17.
A ζ locking plate 18 locks and covers the lower end of the inner hub 3. 19 is a drain hole provided on the bottom of the heating furnace 10.

The tamper pulley, which has been press-fitted, is inserted into the glass sphere 1/1 by means of the transfer cable 15, etc., and is moved while coming into contact with the glass sphere 1/1 suspended by the hot air as described above. At this time, the heat of the glass spheres 14 is transferred to the damper pulley through solid-to-solid (glass spheres 14 and damper pulley) full-surface contact, so the tamper pulley is heated more uniformly than in the conventional method of heating only with hot air. And it is heated up to about 140-175°C in a short time. Therefore, the curing reaction of the adhesive layer 7 is started quickly and completed approximately 5 minutes after insertion into the glass sphere 14. Therefore, the rubber ring 6 is firmly adhered to the pulley rim 1 and the inner hub 3 with almost no deterioration.

Figure 7 shows the temperature rise state of the damper pulley mentioned above.
Shown as 0. For comparison, 200℃ Hola 1~
The temperature increase state of the comparative example when heating using only air is also shown as a temperature increase curve 21 in the figure.

As is clear from the figure, although the temperature of the heating medium in this example is lower than that in the comparative example, the rate of temperature increase is high.

The damper pulley, on which the rubber ring 6 has been press-fitted and bonded as described above, is finally completed with the glass beads 14 adhering to the surface being cleaned by blowing out air. After this damper pulley was left at room temperature for 24 hours, 1/8 of the entire circumference was cut off as shown in Fig. 5, and the end of the pulley rim 1 and the end of the inner hub 3 were pulled together at a pulling speed of 50 mm/min. Tested to measure adhesive strength. In this tensile test,
The adhesive strength when the rubber ring 6 was partially peeled off from the pulley rim 1 or the inner hub 3 was 18 kq/λ cm.

For comparison, a rubber member was press-fitted between metal housings in the same way as in this example, and then placed in hot air at 200°C.
The adhesive strength of a comparative example in which the curing reaction of adhesive 7 was completed by holding for 0 minutes was 10 kg/c.
It was m.

As is clear from the results, the adhesive strength of this example was improved by about 80% compared to that of the comparative example. Reason 1 for this is that since the tambour pulley is heated uniformly and to a certain temperature, there is less uneven adhesion and less deterioration of the adhesive 7. Also, because the heating time is short, the rubber ring 6 Tali also decreases.

In general, since no liquid is used as the heating medium in this embodiment, the pulley rim 1 and the inner hub 3 will not develop rust. In addition, the tambour pulley can be attached to a glass ball with 14
Continuous production is possible because the bonding process is performed continuously by moving the product inside the container.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, but can also be embodied as follows, for example.

(1) Changing the quality of the rubber ring 6 or the type of adhesive 7.

(2) Changing the type of injection fluid 8. When selecting an injection fluid, it is desirable to consider various properties such as toxicity, flammability, influence on adhesive strength, and physical properties.

(3) Applying the adhesive 7 to the inner peripheral surface 2 of the pulley rim 1 and the outer peripheral surface 5 of the inner hub 3.

(4) Before press-fitting the rubber ring 6, apply the press-fitting liquid 8 also to the inner circumferential surface 2 of the pulley rim 1 and the outer circumferential surface 5 of the inner hub 3. By doing so, the press-fitting pressure can be further lowered and the press-fitting properties can be improved.

(5) A method for manufacturing a vibration isolating rubber with a metal housing other than a damper pulley.

Effects of the Invention As detailed above, the present invention can heat and bond vibration-proof rubber with a metal housing uniformly and in a short time, resulting in less uneven bonding and less deterioration of the adhesive.
Therefore, not only the adhesive strength is improved, but also the deterioration of the vibration-proof rubber itself is reduced, which is an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the present invention in a damper pulley, Fig. 2 is an exploded perspective view, and Figs.
5 is a plan view showing the damper pulley cut in the same manner, FIG. 6 is a sectional view showing the heating device used in the bonding process, and FIG. 7 is the CJ FIG. Pulley rim 1, inner hub 3, rubber ring 6, adhesive 7, press-fitting liquid 8, ten thousand glass ball 14° Special edition Applicant Toyoda Gosei Co., Ltd. Agent Patent attorney On 1) 1 (
17 Announcement Figure 2

Claims (1)

[Claims] 1. A step of applying a thermoplastic or thermosetting adhesive (7) to the surface of the rubber member (6) or the metal housing (1°3), and forming the rubber member (6) into a metal housing. Housing (1, 3)
During the press-fitting process, a number of heated crow globules (14
) The metal housing f4 is characterized by comprising a bonding process of heating the press-fitted rubber member (6) and the metal housing (1, 3>) with a heating medium to react and harden the adhesive (7). Method for manufacturing vibration-proof rubber. 2. Rubber member (6) and metal housing (L) after press-fitting.
3) is moved in a heating medium to continuously perform the adhesion process of a plurality of vibration-proof rubbers with metal housings (=I vibration-proof rubbers). Manufacturing method. 3゜The adhesive (7) is a rubber-to-metal adhesive mainly composed of chlorinated rubber, and the injection liquid (8) is an aromatic professional wrestling oil. A method for manufacturing a vibration-proof rubber with a metal housing according to item 1.