JP2006220189A - Vibration control structure manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration control structure manufacturing method for strongly adhering a metal base material to a vibration control rubber body while achieving more working efficiency. <P>SOLUTION: The method of manufacturing the vibration control structure in which a vibration control material body formed of an elastic material is adhered and fixed to the metal base material comprises a step of attaching a thermosetting resin primer to the metal base material, a step of attaching resin adhesive to the vibration control material body, a step of heating the metal base material to which the thermosetting resin primer is attached for temperature rise up to a curing temperature region for the thermosetting resin primer and the resin adhesive, and a step of pressing the adhered face of the metal base material under temperature rise up to the curing temperature region against the attached portion of the resin adhesive to the vibration control material body to actualize co-curing of the thermosetting resin primer and the resin adhesive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing a vibration isolating structure used for a vibration isolating support part for a machine that generates vibration, a vibration isolating member for a building structure, and an engine mount, rubber bush, suspension link, strut mount, change lever, etc. .

  The anti-vibration structure is interposed between the vibrating side and the vibration receiving side, and is used to prevent vibration transmission therebetween. A vibration-proof structure generally used in an automobile or the like includes, for example, metallic inner and outer cylinders arranged concentrically and a vibration-proof material body interposed therebetween. Here, the inner cylinder and the outer cylinder play a role of rigidity such as attachment force, impact force, and bearing strength, and the vibration isolator body plays a role of elasticity such as vibration attenuation and vibration prevention.

  As a method for manufacturing a vibration-proof structure, for example, in Patent Document 1, an adhesive is applied to a first metal body and a second metal body whose surfaces are treated with a primer, and then a vulcanized rubber is compressed. By heating at least one metal body portion of both metal bodies under heating conditions obtained by a selected combination at a temperature and time range of 160 to 250 ° C. and 0.5 to 3 seconds. It is disclosed that the first and second metal bodies are bonded to the vulcanized rubber. According to this, since the bonding is possible in an extremely short time, the deterioration of the rubber can be prevented and the durability can be improved, and the spring constant of the rubber before and after the heating is different. Therefore, it is described that a product having a certain quality can be obtained, and further, it is possible to provide an anti-vibration rubber that can maintain the initial compression force of the rubber as it is and that is excellent in mass productivity.

  Further, Patent Document 2 is composed of a rubber exhibiting an anti-vibration action and an aluminum alloy metal fitting provided in contact with the rubber. When the metal fitting is a cylindrical metal fitting, the diameter is reduced or increased. In the case of a vibration-proof rubber with a metal fitting that is subjected to machining such as bending when the metal fitting is a plate-like metal fitting, the surface is made to have a surface roughness Rz = 10 to 35 μm by blasting, and a film is further formed thereon Disclosed is a method for producing vibration-proof rubber with metal fittings, characterized in that rubber is vulcanized and bonded via an adhesive layer to a metal fitting with a chromic acid chromate treatment having a weight of 50 to 200 mg / m @ 2. ing. And according to this, it is described that it is possible to provide an anti-vibration rubber with a fitting made of aluminum alloy, which is excellent in secondary workability such as drawing and adhesion in a corrosive environment.

Further, in Patent Document 3, rubber is vulcanized and bonded via an adhesive layer to a metal fitting to which a high-temperature curable resin coating composition is applied, and the resin coating layer is cured by heat during the vulcanization. A method for producing anti-vibration rubber is disclosed. And according to this, it is possible to easily and inexpensively manufacture a high-quality vibration-proof rubber having excellent corrosion resistance with existing equipment without requiring special equipment and processes for curing the resin coating layer. , And is described.
Japanese Patent Publication No.59-19018 Japanese Patent No. 2910549 JP 62-24043 A

  An object of the present invention is to provide a method of manufacturing a vibration isolating structure that can strongly bond a metal substrate and a vibration isolating rubber main body and can improve work efficiency.

The manufacturing method of the vibration-proof structure of the present invention that achieves the above object is a method of manufacturing a vibration-proof structure in which a vibration-proof material body formed of an elastic material is bonded and fixed to a metal substrate. And
Attaching a thermosetting resin primer to a metal substrate;
Attaching a resin adhesive to the vibration isolator body;
Heating the metal substrate to which the thermosetting resin primer is attached and raising the temperature to a curing temperature range of the resin adhesive attached to the thermosetting resin primer and the vibration isolator body; and
The thermosetting resin primer is made to press the thermosetting resin primer adhering portion of the metal base in a state where the temperature is raised to the curing temperature range to the resin adhesive adhering portion of the vibration isolator body. And co-curing the resin adhesive;
It is characterized by having.

  Since the thermosetting resin primer attached to the metal substrate and the resin adhesive attached to the vibration isolator body are co-cured as described above, they are cured simultaneously in a state where they are mixed with each other. High adhesion performance between them can be obtained. Moreover, since a separate and independent process for baking the thermosetting resin primer on the metal substrate is not necessary, the work efficiency can be improved.

  The method for producing a vibration-proof structure of the present invention is such that the thermosetting resin primer adhering portion is attached to the vibration-proof material body while continuing to heat the metal substrate in a state where the temperature is raised to the curing temperature range. Even if it is made to press-contact with the adhesion part of the said resin adhesive, after heating the said metal base material and making it heat up to a curing temperature range, after stopping this heating, the adhesion part of the said thermosetting resin primer You may make it press-contact to the adhesion part of the said resin adhesive of the said vibration-proof material main body. In any of these embodiments, the above-described effects can be achieved. In particular, while continuing to heat the metal substrate in a state where the temperature is raised to the curing temperature range, the thermosetting is performed. The form in which the adhesive resin primer adhering part is pressed against the resin adhesive adhering part of the anti-vibration material body is effective in that it is easy to keep the metal substrate in a desired curing temperature range, After heating the metal substrate to a curing temperature range and stopping the heating, the thermosetting resin primer adhering portion is pressed against the resin adhesive adhering portion of the vibration isolator body. Since the surface temperature of the metal base material becomes uniform over the entire surface after heating, it can be pressed after heating, so that the adhesion is further improved, and further, it is economical because it consumes less power. This is because it is effective in terms.

  The method for manufacturing a vibration-proof structure according to the present invention is particularly suitable when the metal substrate is formed of aluminum or an aluminum alloy. This is because aluminum and aluminum alloys are hard-to-adhere metals, and thus the effects of the present invention are particularly remarkable. Here, the aluminum alloy refers to an alloy containing 50% by mass or more of aluminum as a main component and a relatively small amount of metal such as copper, magnesium, manganese and the like.

  In the vibration-proof structure manufacturing method of the present invention, the thermosetting resin primer is preferably a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C. or higher and a decomposition temperature of 270 ° C. or lower. . The bisphenol A type epoxy resin primer is particularly excellent in adhesive properties against difficult-to-adhere metals such as aluminum and aluminum alloys, and is economical because it is a commercially available compound in the market. It is. Here, the decomposition temperature of the primer means a temperature at which the primer cannot be degraded and decomposed, softened and peeled, and further foamed and carbonized to satisfy the function of imparting corrosion resistance to the metal substrate.

  As for the manufacturing method of the vibration proof structure of this invention, it is preferable that the said curing temperature range is 130-250 degreeC. If the curing temperature is lower than 130 ° C, the thermosetting resin primer may be insufficiently cured and the adhesive force may be weakened. If the curing temperature is higher than 250 ° C, the thermosetting resin primer, And there exists a possibility that the said resin adhesive agent may change in quality, and there exists a possibility that adhesive force may become weak. The curing temperature range is more preferably 150 to 230 ° C.

The manufacturing method of the vibration isolating structure according to the present invention includes a metallic inner cylinder and an outer cylinder arranged concentrically with each other, and a cylindrical rubber interposed between the inner cylinder and the outer cylinder. An anti-vibration rubber body, and the inner cylinder, the outer cylinder, and the anti-vibration rubber body are bonded and fixed by an epoxy or urethane resin adhesive, respectively. ,
Attaching the thermosetting resin primer to the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder;
A step of attaching a resin adhesive to the inner peripheral surface and outer peripheral surface of the vulcanized anti-vibration rubber body;
Raising the temperature of the inner cylinder to which the thermosetting resin primer is attached to the curing temperature range of the thermosetting resin primer and the resin adhesive;
Inserting the inner cylinder in a state where the temperature has been raised to the curing temperature range into the anti-vibration rubber body to which the resin adhesive is adhered, and co-curing the thermosetting resin primer and the resin adhesive; ,
Raising the temperature of the outer cylinder to which the thermosetting resin primer is attached to the curing temperature range of the thermosetting resin primer and the resin adhesive;
Inserting the anti-vibration rubber body to which the resin adhesive is attached into the outer cylinder in a state where the temperature is raised to the curing temperature range, and co-curing the thermosetting resin primer and the resin adhesive; ,
It is good also as a thing provided.

In addition, a rubber adhesive mainly composed of a halogenated elastomer is attached to the outer peripheral surface of the inner cylinder, and an unvulcanized rubber composition that becomes a vibration-proof rubber body so as to cover the inner cylinder to which the rubber adhesive is attached A step of heat vulcanization molding of the integrated body of the inner cylinder and the anti-vibration rubber body;
Attaching a thermosetting resin primer to the inner peripheral surface of the outer cylinder;
Attaching a resin adhesive to the outer peripheral surface of the anti-vibration rubber body integrated with the inner cylinder;
Raising the temperature of the outer cylinder to which the thermosetting resin primer is attached to the curing temperature range of the resin adhesive attached to the thermosetting resin primer and the anti-vibration rubber body;
A step of co-curing the thermosetting resin primer and the resin adhesive by inserting the integrated body of the inner cylinder and the anti-vibration rubber body into the outer cylinder in a state where the temperature is raised to the curing temperature range;
It is good also as a thing provided.

  As described above, according to the present invention, the metal base material and the vibration proof rubber main body can be strongly bonded and the work efficiency can be improved.

  Hereinafter, the manufacturing method of the vibration isolator which concerns on embodiment of this invention is demonstrated in detail based on drawing. The present invention is not limited to the following embodiment.

(Embodiment 1)
As Embodiment 1, the manufacturing method of a bush type vibration-proof rubber structure is demonstrated based on FIGS.

<Thermosetting resin primer application process>
Surface coatings are formed on the surfaces of a pair of small and large diameter metal cylinders (metal substrates) 11a, 12a formed of iron, tin, nickel, aluminum, magnesium, or an alloy thereof, and further thermosetting Resin primers 11b and 12b are applied to create an inner cylinder 11 and an outer cylinder 12 as shown in FIG.

  Here, the surface coating is, for example, a zinc phosphate coating or a non-chrome coating. Further, there may be no surface coating.

  Here, as the thermosetting resin primer, a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C. or more and a decomposition temperature of 270 ° C. or less (for example, trade name “S” manufactured by Toagosei Co., Ltd.). −10 ”, trade names“ Epicoat 834 ”,“ Epicoat 1001 ”,“ Epicoat 1009 ”, etc. manufactured by Yuka Shell Epoxy Co., Ltd.) are preferably used.

<Anti-vibration rubber body preparation process>
Thick cylindrical shape from rubber compositions such as natural rubber, isoprene rubber, butyl rubber, chloroprene rubber, styrene / butadiene rubber, nitrile rubber and other diene rubbers or blends and foamed urethane compositions. The anti-vibration rubber main body (vibration-isolating material main body) 13 is vulcanized.

<Adhesive application process>
The inner peripheral surface and the outer peripheral surface of the vibration-proof rubber body 13 are surface-treated with a sodium hypochlorite solution or a chlorinated cyanuric acid solution, and, as shown in FIG. 2, a polyurethane resin adhesive or an epoxy resin adhesive A resin adhesive 17 such as is applied. Here, as the resin adhesive, a thermosetting resin adhesive, a moisture curable resin adhesive, a pressure sensitive resin adhesive, a hot melt resin adhesive, or the like can be used.

<Electromagnetic induction heating process>
As shown in FIG. 3A, the inner cylinder 11 and the outer cylinder 12 are arranged concentrically, and the annular electromagnet 14b held by the gripping tool 14a is arranged so as to surround the outer cylinder 12, and FIG. The multi-turn electromagnetic induction heating work coil 15 as shown in FIG. 2 is placed in the gap between the inner cylinder 11 and the outer cylinder 12 so that the inner cylinder 11 is arranged inside the coil and the outer cylinder 12 is arranged outside the coil. insert. Then, by oscillating the oscillator 16 connected to the work coil 15 at an oscillation frequency of 10 to 300 kHz, the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the outer cylinder 12 are electromagnetically heated, and a thermosetting resin primer and The curing temperature range of the resin adhesive is set. This step may be performed in parallel with the adhesive application step.

<Press-fit process>
As shown in FIG. 4, the inner cylinder 11 and the outer cylinder 12 heated to the curing temperature range are installed on the mounting table 18a so that they are arranged concentrically. Here, the mounting table 18a is provided with an inner cylinder installation recess and an outer cylinder installation recess for installing the inner cylinder 11 and the outer cylinder 12, respectively. At this time, the electromagnetic induction heating work coil is removed from the gap between the inner cylinder and the outer cylinder. Next, the outer cylinder holding jig 18b having a tapered hole having a larger hole diameter as it goes upward and the diameter of the lower opening of the tapered hole being the same as the inner diameter of the outer cylinder 12 is The outer cylinder 12 is fixed so that the opening pushes the upper end of the outer cylinder 12 downward. Further, the inner cylinder 11 is fixed by pushing the upper end of the inner cylinder 11 downward by the inner cylinder holding jig 18c. Then, the vibration isolating rubber main body 13 coated with the resin adhesive 17 is press-fitted into the gap between the inner cylinder 11 and the outer cylinder 12 so as to be along the tapered hole of the outer cylinder holding jig 18 b using the press-fitting jig 19. .

<Co-curing process>
The thermosetting resin primers 11b and 12b and the resin adhesive 17 are co-cured by holding the anti-vibration rubber body 13 in the gap between the inner cylinder 11 and the outer cylinder 12 for a predetermined time, and then the inner cylinder By releasing the restraint by the holding jig 18c, the outer cylinder holding jig 18b, and the press-fitting jig 19, and removing the fixing to the mounting table 18a, a bush type vibration-proof rubber structure as shown in FIG. 5 is manufactured. The

  FIG. 6 shows the change over time in the temperature of the adherend surface on the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the outer cylinder 12 and the temperature of the contact surfaces of the vibration isolating rubber body 13 with the inner cylinder 11 and the outer cylinder 12. Change with time. According to this figure, the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the outer cylinder 12 are equal to or higher than the curing temperature of the thermosetting resin primers 11b and 12b and the resin adhesive 17 by the electromagnetic induction heating. The temperature is raised to a temperature lower than the decomposition temperature of the curable resin primers 11b and 12b (electromagnetic induction heating step). In the meantime, the resin adhesive 17 is apply | coated to the vibration-proof rubber main body 13 (adhesive application | coating process). Next, the vibration isolating rubber main body 13 to which the resin adhesive 17 is applied is press-fitted into the inner cylinder 11 and the outer cylinder 12 so that the contact surfaces of the anti-vibration rubber main body 13 with the inner cylinder 11 and the outer cylinder 12 are cured. The temperature is raised to (press-in process). Then, by keeping the vibration isolating rubber main body 13 press-fitted in the gap between the inner cylinder 11 and the outer cylinder 12, the inner cylinder 11, the outer cylinder 12 and the vibration isolating rubber main body 13 are bonded (co-curing process).

  If it carries out as mentioned above, since thermosetting resin primer 11b, 12b adhering to metal cylinder 11a, 12a and resin adhesive 17 adhering to anti-vibration rubber main body 13 will co-harden, they are mutually mutual. Even if the metal cylinders 11a and 12a are formed of aluminum or an aluminum alloy, which is a difficult-to-adhere metal, high adhesion performance between them can be obtained by curing simultaneously in a mixed state. .

  In addition, since a separate and independent process for baking the thermosetting resin primers 11b and 12b on the metal cylinders 11a and 12a is not necessary, work efficiency can be improved.

  Here, in the electromagnetic induction heating step and the press-fitting step, an electromagnetic induction heating work coil is installed in the gap between the inner cylinder 11 and the outer cylinder 12, and the outer peripheral surface of the inner cylinder 11 and the inner peripheral surface of the outer cylinder 12 are After induction heating to the curing temperature range of the thermosetting resin primer and the resin adhesive, and then removing the electromagnetic induction heating work coil from the gap between the inner cylinder 11 and the outer cylinder 12, the anti-vibration rubber body 13 is press-fitted. However, a work coil for electromagnetic induction heating, which is different from the one installed in the gap between the inner cylinder 11 and the outer cylinder 12, is further installed so as to surround the outer cylinder 12 and electromagnetic induction heating is performed. Even after the surface has been heated to the curing temperature range of the thermosetting resin primer and the resin adhesive, press-fitting the vibration-proof rubber body 13 while continuing the heating by the electromagnetic induction heating work coil so as to surround the outer cylinder 12 Do the above The same effect can be obtained.

(Embodiment 2)
As Embodiment 2, a manufacturing method different from Embodiment 1 of the bush type vibration-proof rubber structure will be described with reference to FIGS.

<Thermosetting primer application process>
Surface coatings are formed on the surfaces of a pair of small and large diameter metal cylinders (metal substrates) 21a, 22a formed of iron, tin, nickel, aluminum, magnesium, or an alloy thereof, and further thermosetting Resin primers 21b and 22b are applied to form the inner cylinder 21 and the outer cylinder 22. Here, the surface coating is, for example, a zinc phosphate coating or a non-chrome coating. Further, there may be no surface coating.

  Here, as the thermosetting resin primer, a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C. or more and a decomposition temperature of 270 ° C. or less (for example, trade name “S” manufactured by Toagosei Co., Ltd.). −10 ”, trade names“ Epicoat 834 ”,“ Epicoat 1001 ”,“ Epicoat 1009 ”, etc. manufactured by Yuka Shell Epoxy Co., Ltd.) are preferably used.

<Integrated vulcanization molding process of inner cylinder and anti-vibration rubber body>
On the outer peripheral surface of the inner cylinder 21, a rubber adhesive mainly composed of a halogenated elastomer (for example, product name: Chemlock 220, Chemlock 250, Chemlock 252 or the like manufactured by U.S. Huson Chemical Co., which is a chlorinated rubber-based overcoat adhesive) ) And natural rubber, isoprene rubber, butyl rubber, chloroprene rubber, styrene / butadiene rubber, nitrile rubber and other diene rubbers or the like so as to cover the inner cylinder 21 coated with rubber adhesive. An unvulcanized rubber composition such as a rubber composition or a foamed urethane composition is provided, and these are set in a predetermined mold and heated for a predetermined time, whereby the inner cylinder 21 and the vibration-proof rubber main body (vibration-proof material main body) The integral with 23 is vulcanized.

<Adhesive application process>
The outer peripheral surface of the vibration isolating rubber main body 23 integrated with the inner cylinder 21 is surface-treated with a sodium hypochlorite solution or a chlorinated cyanuric acid solution, and, as shown in FIG. A resin adhesive 27 such as a polyurethane resin adhesive or an epoxy resin adhesive is applied. Here, as the resin adhesive, a thermosetting resin adhesive, a moisture curable resin adhesive, a pressure sensitive resin adhesive, a hot melt resin adhesive, or the like can be used.

<Electromagnetic induction heating process>
As shown in FIGS. 8 and 9, the outer cylinder 22 is gripped by a rod 24 and used for single-turn electromagnetic induction heating with a ferromagnetic body (for example, nickel) 28a as shown in FIGS. The work coil 25 a is inserted inside the outer cylinder 22. Then, by causing the oscillator 26 connected to the work coil 25a to oscillate at an oscillation frequency of 10 to 300 kHz, the inner peripheral surface of the outer cylinder 22 is electromagnetically heated to co-cure the thermosetting resin primer and the resin adhesive. To be an area. As a work coil for electromagnetic induction heating, a double-turn work coil 25b formed so as to wind a ferromagnetic body 28b as shown in FIG. 10 may be used instead of a single-turn work coil. This step may be performed in parallel with the adhesive application step.

<Press-fit process>
The heated outer cylinder 22 is installed on the mounting table. Next, the outer cylinder 22 is fixed by the same outer cylinder holding jig as in the first embodiment. Then, the anti-vibration rubber body 23 coated with the resin adhesive 27 is press-fitted into the outer cylinder 22 together with the inner cylinder 21 so as to be along the tapered hole of the outer cylinder holding jig using a press-fitting jig.

<Co-curing process>
The thermosetting resin primer 22b and the resin adhesive 27 are co-cured by holding the anti-vibration rubber body 23 in the outer cylinder 22 for a predetermined time, and then restrained by the outer cylinder holding jig and the press-fitting jig. By releasing and fixing to the mounting table, a bush type anti-vibration rubber structure is manufactured.

  The function and effect are the same as in the first embodiment.

  Here, in the electromagnetic induction heating step and the press-fitting step, the electromagnetic induction heating work coil 25a is inserted inside the outer cylinder 22, and after heating the outer cylinder 22 to the curing temperature range, the electromagnetic induction heating work coil 25a is removed. The anti-vibration rubber main body 23 is press-fitted, but a work coil for electromagnetic induction heating is arranged so as to cover the outer cylinder 22 from the outside, and the anti-vibration rubber main body 23 is press-fitted while the outer cylinder 22 is continuously heated. However, the same effects as those of the first embodiment can be obtained.

(Embodiment 3)
As Embodiment 3, the manufacturing method of a mounting rubber type vibration-proof rubber structure is demonstrated based on FIGS.

<Inner metal base, outer metal base and anti-vibration rubber body preparation process>
Surface of a metal molded body (metal substrate) 31a that is press-molded so that a protrusion is formed at the center by a donut-shaped metal plate formed of iron, tin, nickel, aluminum, magnesium, or an alloy thereof. Then, a surface film is formed, and further a thermosetting resin primer 31b is applied to form the inner metal base 31. Similarly, a surface film is formed on the surface of a metal molded body 32a formed into a dish shape from a donut-shaped metal plate, and a thermosetting resin primer 32b is further applied to create an outer metal substrate 32. Here, the surface coating is, for example, a zinc phosphate coating or a non-chrome coating. Further, there may be no surface coating.

  Here, as the thermosetting resin primer, a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C. or more and a decomposition temperature of 270 ° C. or less (for example, trade name “S” manufactured by Toagosei Co., Ltd.). −10 ”, trade names“ Epicoat 834 ”,“ Epicoat 1001 ”,“ Epicoat 1009 ”, etc. manufactured by Yuka Shell Epoxy Co., Ltd.) are preferably used.

  Also, it is thick from rubber compositions such as natural rubber, isoprene rubber, butyl rubber, chloroprene rubber, styrene / butadiene rubber, nitrile rubber and other diene rubbers, or rubber compositions and foamed urethane compositions. The donut-shaped anti-vibration rubber body 33 is vulcanized.

<Adhesive application process>
A polyurethane-based resin whose inner peripheral surface and outer peripheral surface of the vibration isolating rubber main body 33 are surface-treated with a sodium hypochlorite solution or a chlorinated cyanuric acid solution, and the curing temperature is 180 ° C. or less as shown in FIG. A thermosetting resin adhesive 37 such as an adhesive or an epoxy resin adhesive is applied. Here, as the resin adhesive, a thermosetting resin adhesive, a moisture curable resin adhesive, a pressure sensitive resin adhesive, a hot melt resin adhesive, or the like can be used.

<Electromagnetic induction heating process>
As shown in FIG. 12, the outer metal base 32 is arranged so as to cover the electromagnetic induction heating work coil 35 a formed in a bowl shape. At the same time, as shown in FIG. 13, the inner metal base 31 placed on the mounting table 38 is disposed so as to be covered with another electromagnetic induction heating work coil 35 b formed in a bowl shape. Then, by oscillating an oscillator connected to both the work coils 35a and 35b at an oscillation frequency of 10 to 300 kHz, the outer surface of the inner metal substrate 31 and the inner surface of the outer metal substrate 32 are heated by electromagnetic induction, and are thermosetting. The curing temperature range of the resin primer and resin adhesive is set. It should be noted that the temperature of both of them may be raised by one work coil by disposing the coil-shaped electromagnetic induction work coil so as to be sandwiched between the inner metal base 31 and the outer metal base 32. . This step may be performed in parallel with the adhesive application step.

<Composite process>
As shown in FIG. 14, the inner metal base 31 heated to the curing temperature range, the anti-vibration rubber main body 33 coated with the resin adhesive 37 and the outer metal base 32 are sequentially laminated concentrically, Apply pressure from above to form a composite. At this time, the protruding portion of the inner metal base material 31 fits into the center hole of the vibration isolating rubber main body 33, and the vibration isolating rubber main body 33 fits into the concave portion of the outer metal base material 32.

<Co-curing process>
A vibration-proof rubber body 33 is sandwiched between the inner metal base 31 and the outer metal base 32, and pressure is applied from above to co-cure the thermosetting resin primer 32b and the resin adhesive 37. When allowed to cool for a time, a mounting rubber type anti-vibration rubber structure as shown in FIG. 15 is manufactured.

  The function and effect are the same as in the first embodiment.

  Here, in the electromagnetic induction heating step and the composite step, the electromagnetic induction heating work coil is inserted inside the outer metal base 32 and the outer metal base 32 is heated up to the curing temperature range, and then is used for electromagnetic induction heating. The work coil was removed and then combined, but a work coil for electromagnetic induction heating was arranged so as to cover the outer metal base 32 from the outside, and the outer metal base 32 was continuously heated and combined. Also, the same effects as those of the first embodiment can be obtained.

(Embodiment 4)
As Embodiment 4, the manufacturing method of the change lever as a vibration-proof rubber structure is demonstrated based on FIGS.

<Preparation process of the upper lever, lower lever and anti-vibration rubber body>
A surface film is formed on the surface of the metal cylinder portion 41 a at the tip of the change lever main body 40, and a thermosetting resin primer 41 b is further applied. Here, the surface coating is, for example, a zinc phosphate coating or a non-chrome coating. Further, there may be no surface coating.

  Here, as the thermosetting resin primer, a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C. or more and a decomposition temperature of 270 ° C. or less (for example, trade name “S” manufactured by Toagosei Co., Ltd.). −10 ”, trade names“ Epicoat 834 ”,“ Epicoat 1001 ”,“ Epicoat 1009 ”, etc. manufactured by Yuka Shell Epoxy Co., Ltd.) are preferably used.

  In addition, a metal upper lever 42 formed in a cap shape is prepared.

  From rubber compositions such as natural rubber, isoprene rubber, butyl rubber, chloroprene rubber, styrene / butadiene rubber, nitrile rubber and other diene rubbers or blends, such as rubber compositions and foamed urethane compositions. An anti-vibration rubber body 43 formed by coaxially stacking two thick cylindrical bodies is vulcanized.

<Electromagnetic induction heating process>
As shown in FIG. 16, the upper lever 42 is fixed to the mounting table 48a, the upper lever 42 is disposed in the coil of the multi-turn electromagnetic induction heating work coil 45a, and the inner surface of the upper lever 42 is thermally cured. Electromagnetic induction heating is performed so that the curing temperature range of the conductive resin primer and the resin adhesive is reached.

  Further, as shown in FIG. 17, the change lever main body 40 is fixed to the mounting table 48b, and the lower lever 41 is arranged in the coil of another electromagnetic induction heating work coil 45b of multi-turn. Then, by oscillating an oscillator connected to the work coil 45b at an oscillation frequency of 10 to 300 kHz, the surface of the lower lever 41 is electromagnetically heated so as to be in the curing temperature range of the thermosetting resin primer and the resin adhesive. .

<Adhesive application process>
As shown in FIG. 18, the anti-vibration rubber main body 43 is fixed to the mounting table 48c, the inner peripheral surface and the outer peripheral surface thereof are surface-treated with a sodium hypochlorite solution or a chlorinated cyanuric acid solution, and a polyurethane resin A resin adhesive 47 such as an adhesive or an epoxy resin adhesive is applied. Here, as the resin adhesive, a thermosetting resin adhesive, a moisture curable resin adhesive, a pressure sensitive resin adhesive, a hot melt resin adhesive, or the like can be used. This step may be performed in parallel with the electromagnetic induction heating step.

<Press-fit process>
As shown in FIG. 19, the upper lever 42 heated to the curing temperature range is fixed to another mounting table 48d, and the anti-vibration rubber body 43 coated with the resin adhesive 47 is inserted into the upper lever 42. Thus, the upper lever 42 and the lower lever 41 are fixed to the anti-vibration rubber body 43.

<Co-curing process>
The upper lever 42 and the lower lever 41 are fixed to the anti-vibration rubber body 43, the thermosetting resin primer 41b and the resin adhesive 47 are co-cured, allowed to cool in that state for a predetermined time, and then the fixation is released. As a result, a change lever as a vibration-proof rubber structure is manufactured.

  The actions and effects are the same as those in the first embodiment.

  Here, in the electromagnetic induction heating process and the press-fitting process, after the upper lever 42 was heated to the curing temperature range, the work coil for electromagnetic induction heating was removed and the anti-vibration rubber body 43 was press-fitted. Even if the anti-vibration rubber main body 43 is press-fitted in a state where the induction coil is continuously heated by the induction heating work coil, the same effect as the first embodiment can be obtained.

(Test evaluation 1)
An evaluation test for examining the adhesive strength of a vibration-proof structure in which a metal substrate and a vibration-proof material body are bonded by co-curing a thermosetting resin primer and a resin adhesive is shown in the second embodiment. This was carried out using a bush type anti-vibration rubber structure having the same structure as in FIG.

<Anti-vibration rubber structure for test evaluation>
As the aluminum cylinder used as the outer cylinder, the adhesive surface was prepared by wet blasting, zinc phosphate coating, and non-chromium coating. .

  Here, the wet blasting process is specifically performed by accelerating a liquid obtained by mixing an abrasive with ordinary water with compressed air from a compressor and spraying it on the adhesive surface of a metal tube without using any chemical. It was performed by degreasing and surface treatment at the same time.

  In addition, the zinc phosphate coating is formed by degreasing by immersing the metal cylinder in the degreasing solution for 5 minutes while stirring, then washing with tap water at room temperature for 30 seconds, and subsequently adding 30 to the surface conditioning treatment solution. By adhering to the surface for 2 seconds to adjust the surface, and then forming a film by immersing in a zinc phosphate film forming treatment solution while stirring, and then washing with tap water and pure water (each at room temperature) for 30 seconds each. went.

  In addition, the formation of the non-chromium film is degreased by immersing the metal cylinder in the degreasing treatment liquid while stirring, and after pure cleaning, the film is formed by immersing in the non-chromium film forming treatment liquid while stirring. It was performed by washing with pure water.

  In addition, after applying a primer to the outer peripheral surface of the metal cylinder that becomes the inner cylinder, a rubber adhesive (trade name: Chemlock 220, manufactured by Huson Chemical Co., Ltd., USA) is applied to cover the inner cylinder to which the rubber adhesive is applied. In this way, the unvulcanized rubber composition of natural rubber is provided, and these are set in a predetermined mold and heated for a predetermined time, thereby vulcanizing and molding the integral body of the inner cylinder and the anti-vibration rubber body. Prepared.

  Next, a thermosetting resin primer (trade name: S-10, manufactured by Toa Gosei Chemical Co., Ltd.) is applied to the adhesion surface, that is, the inner peripheral surface of each of the above-described four types of surface treatments. It was a cylinder. In addition, a resin adhesive (trade name: Kuratite T-10 and Kuratite T-200 manufactured by Hirono Chemical Co., Ltd. is used on the bonding surface of each anti-vibration rubber body integrated with the inner cylinder, that is, the outer peripheral surface. 3: 1 volume ratio) was applied.

  Next, for each surface treatment type applied to the aluminum metal cylinder as the outer cylinder, no treatment is applied to the adhesive surface of the outer cylinder coated with Toa Gosei Chemical Industry Co., Ltd. Prepared after 72 hours of salt spray test, allowed to cool to room temperature, cooled to room temperature after 720 hours of salt spray test, and maintained for 240 hours in an atmosphere of 70 ° C. did. Here, the salt spray test was performed as follows according to JIS Z 2371 using a salt spray tester manufactured by Suga Test Instruments Co., Ltd. First, the temperature in the salt spray test machine was set to 35 ° C., and a 5% sodium chloride aqueous solution was sprayed to make the relative humidity in the machine 45%. Next, the outer cylinder was left in the salt spray tester for a predetermined time. Thereafter, the outer cylinder was taken out, washed with water and dried.

  Then, after the temperature of the outer cylinder is increased to 180 ° C., a vibration-proof rubber main body integrated with the inner cylinder is press-fitted there, and then cooled to room temperature to produce a bush-type vibration-proof rubber structure for test evaluation. did.

<Test evaluation method>
Each anti-vibration rubber structure for the test evaluation was subjected to a bush breaking test using an autograph tester manufactured by Shimadzu Corporation.

  First, as shown in FIG. 20, a vibration-proof rubber structure 50 is installed on a cylindrical mounting table 51 so that only the outer cylinder 52 is placed thereon.

  Next, the main body portion of the inner cylinder pressing jig 53 having a disc-shaped plate having a columnar body and a disc-shaped plate having a diameter larger than the diameter of the main body section at the upper end of the main body portion is attached to the vibration isolating rubber structure 50. Is placed on the inner cylinder 54. Here, the diameter of the inner cylinder holding jig 53 is the same as the outer diameter of the inner cylinder 54.

  Then, the disk-shaped plate of the inner cylinder holding jig 53 is pressed by the head 55 of the autograph tester. This pressurizing operation is performed at a test speed of the autograph tester of 50 mm / min until the anti-vibration rubber main body is peeled off from the inner cylinder 54 or until the anti-vibration rubber main body is broken before the peeling occurs.

<Test evaluation results>
The results of the bush breaking test are shown in Table 1.

  According to Table 1, all of the anti-vibration rubber structures had good adhesion results with a rubber failure rate of 100% with respect to the aluminum outer cylinder which is hardly adhesive.

  Here, the rubber failure rate is a value obtained by dividing the area where the adherend portion is not exposed by the area of the entire adherend surface on the inner fracture surface of the outer cylinder, as a percentage. Therefore, when the rubber destruction rate is 100%, the adhesive force between the outer cylinder and the anti-vibration rubber body is strong, so the anti-vibration rubber body is peeled off from the outer cylinder by the load from the head of the autograph tester. It means that the rubber body itself has been destroyed.

(Test evaluation 2)
<Anti-vibration rubber structure for test evaluation>
Several metal tubes made of aluminum that serve as an outer cylinder were prepared by subjecting the adhesive surface to wet blasting.

  In addition, after applying a primer to the outer peripheral surface of the metal cylinder that becomes the inner cylinder, a rubber adhesive (trade name: Chemlock 220, manufactured by Huson Chemical Co., Ltd., USA) is applied to cover the inner cylinder to which the rubber adhesive is applied. In this way, the unvulcanized rubber composition of natural rubber is provided, and these are set in a predetermined mold and heated for a predetermined time, thereby vulcanizing and molding the integral body of the inner cylinder and the anti-vibration rubber body. Prepared.

  Next, a thermosetting resin primer (trade name: S-10 manufactured by Toa Gosei Chemical Co., Ltd.) was applied to the adhesion surface of each outer cylinder subjected to surface treatment, that is, the inner peripheral surface. In addition, a resin adhesive (trade name: Kuratite T-10 and Kuratite T-200 manufactured by Hirono Chemical Co., Ltd. is used on the bonding surface of each anti-vibration rubber body integrated with the inner cylinder, that is, the outer peripheral surface. 3: 1 volume ratio) was applied.

  Then, after heating the outer cylinder to the target temperature rise, press the anti-vibration rubber body integrated with the inner cylinder into it, and then let it cool to room temperature. The body was made. At this time, the temperature rise temperature of the target outer cylinder was set to a temperature of 10 ° C. up to 100 to 260 ° C., and vibration-proof rubber structures for test evaluation were produced at the respective temperatures.

<Test evaluation method>
The same bush fracture test as in test evaluation 1 was performed.

<Test evaluation results>
Table 2 shows the results of the bush breaking test. Here, the breaking load indicates a load detected by the head of the autograph tester when the bush is broken by rubber.

  According to Table 2, when the measured temperature (curing temperature) of the outer cylinder is from 130 to 250 ° C., the rubber fracture rate is 85% or more even for the aluminum outer cylinder which is difficult to adhere, It can be seen that when the curing temperature is 150 ° C. to 230 ° C., a good adhesive strength with a rubber failure rate of 100% can be obtained. Here, when the curing temperature was 120 ° C. or less, the rubber fracture rate was 60% or less, and when the curing temperature was 260 ° C., only a weak adhesive strength of 40% was obtained. If the temperature is lower than 1, the thermosetting resin primer is not sufficiently cured, while if the temperature is higher than 250 ° C., the thermosetting resin primer and the resin adhesive are deteriorated.

  As described above, the present invention relates to a vibration isolating support component for a machine that generates vibration, a vibration isolating member for a building structure, and an engine mount, a rubber bush, a suspension link, a strut mount, a change lever, etc. for an automobile. This is useful for a method for manufacturing a structure.

It is sectional drawing of the inner cylinder and outer cylinder of the vibration isolator rubber structure which concern on Embodiment 1. FIG. 1 is a cross-sectional view of a vibration-proof rubber structure according to Embodiment 1. FIG. It is explanatory drawing of the electromagnetic induction heating process in the manufacturing method of the vibration proof rubber structure which concerns on Embodiment 1. FIG. It is explanatory drawing of the press injection process in the manufacturing method of the vibration proof rubber structure which concerns on Embodiment 1. FIG. 3 is a cross-sectional view of a vibration-proof rubber body of the vibration-proof rubber structure according to Embodiment 1. FIG. In the manufacturing method of the vibration isolating rubber structure according to the first embodiment, the change over time in the temperature of the bonded surface on the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder, and the inner cylinder and the outer cylinder of the anti-vibration rubber main body It is a graph which shows the time-dependent change of the temperature of a contact surface. It is sectional drawing of the integral thing of the inner cylinder and anti-vibration rubber main body of the anti-vibration rubber structure concerning Embodiment 2. It is explanatory drawing (side sectional drawing) of the electromagnetic induction heating process in the manufacturing method of the vibration proof rubber structure which concerns on Embodiment 2. FIG. It is explanatory drawing (top view) of the electromagnetic induction heating process in the manufacturing method of the vibration-proof rubber structure which concerns on Embodiment 2. FIG. It is the side view and top view of a double-turn work coil. It is sectional drawing of the vibration-proof rubber main body of the vibration-proof rubber structure which concerns on Embodiment 3. It is explanatory drawing of the electromagnetic induction heating process (outer metal base material) in the manufacturing method of the vibration proof rubber structure which concerns on Embodiment 3. FIG. It is explanatory drawing of the electromagnetic induction heating process (inner metal base material) in the manufacturing method of the vibration proof rubber structure which concerns on Embodiment 3. FIG. It is explanatory drawing of the compounding process in the manufacturing method of the vibration-proof rubber structure which concerns on Embodiment 3. FIG. It is sectional drawing of the vibration-proof rubber structure which concerns on Embodiment 3. It is explanatory drawing of the electromagnetic induction heating process (upper lever) in the manufacturing method of the change lever which concerns on Embodiment 4. FIG. It is explanatory drawing of the electromagnetic induction heating process (lower lever) in the manufacturing method of the change lever which concerns on Embodiment 4. FIG. It is explanatory drawing of the adhesive agent coating process in the manufacturing method of the change lever which concerns on Embodiment 4. FIG. It is explanatory drawing of the press injection process in the manufacturing method of the change lever which concerns on Embodiment 4. FIG. It is sectional drawing of the vibration-proof rubber structure in the bush fracture test which concerns on test evaluation 1 and 2, and an autograph testing machine.

Explanation of symbols

11, 21 Inner cylinder 11a, 12a, 21a, 22a Metal cylinder 11b, 12b, 21b, 22b, 31b, 32b, 41b Thermosetting resin primer 12, 22 Outer cylinder 13, 23, 33, 43 Anti-vibration rubber body 14a Tool 14b Ring electromagnets 15, 25a, 25b, 35a, 35b, 45a, 45b Work coils 16, 26 Oscillators 17, 27, 37, 47 Resin adhesives 18a, 38, 48a-d, 51 Mounting table 18b Outer cylinder holding jig 18c Inner cylinder holding jig 19 Press fitting jig 24 Rods 28a and 28b Ferromagnetic material 31 Inner metal base 32 Outer metal base 40 Change lever body 41 Lower lever 42 Upper lever 50 Anti-vibration rubber structure 52 Outer cylinder 53 Inside Tube holding jig 54 Inner tube 55 Head

Claims (8)

A method of manufacturing a vibration-proof structure, in which a vibration-proof material body formed of an elastic material is bonded and fixed to a metal substrate,
Attaching a thermosetting resin primer to a metal substrate;
Attaching a resin adhesive to the vibration isolator body;
Heating the metal substrate to which the thermosetting resin primer is attached and raising the temperature to a curing temperature range of the resin adhesive attached to the thermosetting resin primer and the vibration isolator body; and
The thermosetting resin primer is made to press the thermosetting resin primer adhering portion of the metal base in a state where the temperature is raised to the curing temperature range to the resin adhesive adhering portion of the vibration isolator body. And co-curing the resin adhesive;
A method for manufacturing a vibration-proof structure, comprising: In the manufacturing method of the vibration proof structure described in Claim 1,
The thermosetting resin primer adhering part is brought into pressure contact with the resin adhesive adhering part of the vibration isolator main body while continuing to heat the metal base in a state where the temperature is raised to the curing temperature range. A method of manufacturing a vibration-proof structure characterized by the above. In the manufacturing method of the vibration proof structure described in Claim 1,
After heating the metal substrate to a curing temperature range and stopping the heating, the thermosetting resin primer adhering portion is pressed against the resin adhesive adhering portion of the vibration isolator body. A method of manufacturing a vibration-proof structure characterized in that In the manufacturing method of the vibration proof structure according to any one of claims 1 to 3,
A method for manufacturing a vibration-proof structure, wherein the metal substrate is made of aluminum or an aluminum alloy. In the manufacturing method of the vibration proof structure according to any one of claims 1 to 4,
A method for producing an anti-vibration structure, wherein the thermosetting resin primer is a bisphenol A type epoxy resin primer having a thermosetting temperature of 130 ° C or higher and a decomposition temperature of 270 ° C or lower. In the manufacturing method of the vibration proof structure according to any one of claims 1 to 5,
The method for producing a vibration-proof structure, wherein the curing temperature range is 130 to 250 ° C. A metal inner cylinder and an outer cylinder arranged concentrically with each other, and a cylindrical rubber-like vibration-proof rubber body interposed between the inner cylinder and the outer cylinder, An inner cylinder and an outer cylinder and the vibration isolating rubber main body are each produced by a method for producing a vibration isolating rubber structure, which is bonded and fixed by an epoxy or urethane resin adhesive,
Attaching the thermosetting resin primer to the outer peripheral surface of the inner cylinder and the inner peripheral surface of the outer cylinder;
A step of attaching a resin adhesive to the inner peripheral surface and outer peripheral surface of the vulcanized anti-vibration rubber body;
Raising the temperature of the inner cylinder to which the thermosetting resin primer is attached to the curing temperature range of the thermosetting resin primer and the resin adhesive;
Inserting the inner cylinder in a state where the temperature has been raised to the curing temperature range into the anti-vibration rubber body to which the resin adhesive is adhered, and co-curing the thermosetting resin primer and the resin adhesive; ,
Raising the temperature of the outer cylinder to which the thermosetting resin primer is attached to the curing temperature range of the thermosetting resin primer and the resin adhesive;
Inserting the anti-vibration rubber body to which the resin adhesive is attached into the outer cylinder in a state where the temperature is raised to the curing temperature range, and co-curing the thermosetting resin primer and the resin adhesive; ,
A method for manufacturing a vibration-proof structure, comprising: A metal inner cylinder and an outer cylinder arranged concentrically with each other, and a cylindrical rubber-like anti-vibration rubber body interposed between the inner cylinder and the outer cylinder. The cylinder and the anti-vibration rubber main body are bonded and fixed by a rubber adhesive mainly composed of a halogenated elastomer, and the outer cylinder and the anti-vibration rubber main body are bonded and fixed by an epoxy-based or urethane-based resin adhesive. A method of manufacturing a vibration-proof rubber structure,
A rubber adhesive mainly composed of a halogenated elastomer is attached to the outer peripheral surface of the inner cylinder, and an unvulcanized rubber composition serving as a vibration-proof rubber body is provided so as to cover the inner cylinder to which the rubber adhesive is attached, A step of heat vulcanizing and molding the integral body of the inner cylinder and the anti-vibration rubber body;
Attaching a thermosetting resin primer to the inner peripheral surface of the outer cylinder;
Attaching a resin adhesive to the outer peripheral surface of the anti-vibration rubber body integrated with the inner cylinder;
Raising the temperature of the outer cylinder to which the thermosetting resin primer is attached to the curing temperature range of the resin adhesive attached to the thermosetting resin primer and the anti-vibration rubber body;
A step of co-curing the thermosetting resin primer and the resin adhesive by inserting the integrated body of the inner cylinder and the anti-vibration rubber body into the outer cylinder in a state where the temperature is raised to the curing temperature range;
A method for manufacturing a vibration-proof structure, comprising:

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