JPH07251996A - Metal-plated roll - Google Patents

Abstract

PURPOSE:To provide a metal-plated roll which is constituted to form a metal- plated layer directly by electric plating without forming an induction treatment layer. CONSTITUTION:An adhesive filling groove 32 is formed in the outer peripheral surface of the press-in part 30 of a flange member 3 made of iron and a clearance groove 33 is peripherally formed in the base end part of a flange part 31 on the press-in part 30 side. In a state that the press-in part 30 of the flange part 3 is pressed in the inner peripheral surface of the end part of a cylindrical body 2 made of CFRP through an adhesive 5, an adhesive filling groove 32 is filled with an adhesive 5 to ensure an adhesion strength between a flange member 3 and a cylindrical body 2. A surplus adhesive 5 is escaped in the clearance groove 33 and positioned in the clearance groove 33 without buffering the edge of the inner periphery of the cylindrical body 2. This way effects direct contact between the end face 21 of the cylindrical body 2 and the flange part 31 not through the adhesive 5, ensures conductivity between the cylindrical body 2 and the flange member 3, and forms a metal-plated layer 4, consisting of an iron plating layer 41 and a rigid chrome plating layer 42, an the surface thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-plated roll made of carbon fiber reinforced plastic.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, a metallic flange member c is provided at both ends of a carbon fiber reinforced plastic cylindrical body b, and the surface of the cylindrical body b is connected to the surface of the flange member c. There is known a metal plating roll a provided with a metal plating layer d so as to be wound up to (Japanese Patent Publication No. 5-73).
665 publication).

[0003]

However, in the case of the above-mentioned conventional metal plating roll a, the tubular body b and the flange member c are insulated by the adhesive e used for bonding them. After the conductive treatment layer f is provided on the surface, the metal plating layer d must be provided. Therefore, the metal plating layer d is easily peeled off, and the provision of the conductive treatment layer f increases the number of manufacturing steps of the metal plating roll a, resulting in an increase in manufacturing cost.

Further, in the case where the tubular body b is usually placed in a plating bath to form the metal plating layer d, the tubular body b is erected so that the hydrogen gas generated from the tubular body b escapes upward. Then, the metal plating layer d is formed by placing it in a plating bath. However, in the case of the conventional metal plating roll a, since the metal plating layer d must be formed so as to be wound not only on the outer peripheral surface of the cylindrical body b but also on the end surface thereof, the cylindrical body b
Hydrogen gas accumulates on the lower end face, and inconveniences such as innumerable pinholes are generated in the metal plating layer d at this portion.

Further, since the metal plating layer d must be formed not only on the outer peripheral surface of the cylindrical body b but also on the end surface thereof, a specially shaped anode (anode) is required and the metal plating is performed. Even after the formation of the layer d, a finishing process is required to prevent the metal plating layer d from peeling off, which causes an inconvenience that the manufacturing cost increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a metal plating roll which can be directly provided with a metal plating layer by electroplating without providing a conductive treatment layer. .

[0007]

The metal plating roll of the present invention for solving the above problems comprises a tubular body made of carbon fiber reinforced plastic, and a press-fitting portion capable of being press-fitted inside the end portion of the tubular body. Having the press-fitted portion, the flange member made of a conductive metal, in which the collar portion that is flush with the outer peripheral surface of the tubular body is provided around the surface of the tubular member and the surface of the tubular member. The flanged member is provided with a metal plating layer, and an adhesive filling groove is provided on the outer peripheral surface of the press-fitting portion of the flange member, and the inner periphery of the tubular body is provided at the base end of the flange portion on the press-fitting portion side. An escape groove is provided around the end edge of the tubular body to prevent buffering, and the flange member is filled with the adhesive in a state where the flange member is press-fitted to the inner peripheral surface of the end of the tubular body with the adhesive. The adhesive strength between the tube and the cylindrical body is secured, and excess adhesive escapes from the groove. By escaping and arranging the inner peripheral edge of the tubular body in the escape groove without buffering, the end face of the tubular body and the flange portion are brought into direct contact with each other without an adhesive agent, whereby the tubular body A strong metal plating layer is formed by ensuring conductivity between the strip and the flange member.

Further, an iron flange member is used, and a metal plating layer composed of two layers, in which a hard chrome plating layer is coated on the surface of the iron plating layer, is used.

[0009]

According to the present invention, the adhesive filled in the adhesive filling groove of the flange member can ensure the adhesive strength between the flange member and the tubular body.

Further, the surplus adhesive is allowed to escape to the escape groove, and the inner peripheral edge of the cylindrical body is positioned in this escape groove without buffering the flange portion of the flange member and the end surface of the cylindrical body. They can be directly contacted with each other without an adhesive agent interposed therebetween, thereby forming a strong metal plating layer that secures electrical conductivity between the tubular body and the flange member.

Further, in this bonded state, the flange portion of the flange member is flush with the outer peripheral surface of the cylindrical body, so that it is not necessary to wind the outer peripheral surface to the end surface to provide the metal plating layer.

According to the second aspect of the present invention, it goes without saying that the iron plating layer has good adhesion to the iron flange member, and also has good adhesion to the carbon fiber reinforced plastic forming the tubular body. . Further, since it has a relatively low hardness, it has a cushioning role between these cylindrical body and flange member and the hard chrome plating layer, and also has a coefficient of thermal expansion close to that of carbon fiber reinforced plastic,
The drawbacks of the carbon fiber reinforced plastic forming the tubular body will be improved or modified. Further, the hard chrome plating layer improves the surface hardness and abrasion resistance and protects the surface of the iron plating layer, thus contributing to oxidation prevention and anticorrosion effects.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the outline of the overall structure of the metal plating roll 1, and FIG. 2 shows the essential parts of the metal plating roll 1.

That is, the metal-plating roll 1 has a tubular body 2 provided with flange members 3 at both ends thereof, and the surfaces of the tubular body 2 and the flange member 3 are coated with a metal plating layer 4 to form a tubular shape. The end surface 21 of the body 2 and the flange portion 31 of the flange member 3 directly contact with each other without the adhesive 5 interposed therebetween, whereby conductivity is secured and a strong metal plating layer 4 is formed.

As the tubular body 2, a tubular body made of carbon fiber reinforced plastic (CFRP) having an appropriate thickness is used. The tubular body 2 is used after being degreased and then checked for conductivity.

The flange member 3 is made of a conductive metal such as iron, and can be press-fitted into the inner surface of the end of the tubular body 2 by a press-fitting portion 30.
And a flange portion 31 which is flush with the outer peripheral surface of the tubular body 2 in a state where the press-fitting portion 30 is press-fitted. this house,
An adhesive filling groove 32 to be filled with the adhesive 5 is provided around the outer peripheral surface of the press-fitting portion 30. An escape groove 33 is also provided around the base end of the flange 31 located on the press-fitting portion 30 side, and when the flange member 3 is press-fitted into the tubular body 2, the inner circumference of the tubular body 2 is reduced. It is designed not to buffer the edges.

The flange member 3 is adhered by press-fitting the press-fitting portion 30 in a state where the adhesive 5 is applied to the inner surfaces of both ends of the tubular body 2. At this time, the adhesive 5 is filled in the adhesive filling groove 32, and the adhesive 5 filled in the adhesive filling groove 32 ensures the adhesive strength between the tubular body 2 and the flange member 3. Will be done. Further, the escape groove 33 serves as an escape area for the excess adhesive agent 5 not filled in the adhesive agent filling groove 32.
Is prevented from intervening between the end surface 21 of the tubular body 2 and the flange portion 31. At the same time, this escape groove 33
Is configured to prevent the inner peripheral side corner portion of the end surface 21 of the tubular body 2 from being buffered by the base end portion of the flange portion 31. As a result, the end surface 21 of the tubular body 2 and the flange portion 31 can directly contact each other, and the tubular body 2 and the flange member 3 can be bonded together while ensuring sufficient conductivity. Has been done.

As shown in FIG. 3, the press-fitting adhesion of the flange member 3 to the tubular body 2 is carried out by abutting the disk-shaped fastening member 6 from the outside of the flange member 3 and by using the bolt 61 and the nut 62. It can be performed by tightening between the fastening members 6.

The metal plating layer 4 ensures that the tubular body 2 and the flange member 3 have sufficient conductivity, so that the electroless plating or the electro-chemical plating is not required to form the electro-chemical plating layer. It can be formed directly by the method. Therefore, the type of plating forming the metal plating layer 4 is not particularly limited, and various metal plating layers 4 that can be formed by the electrochemical plating method can be formed. For example, when the flange member 3 is made of steel, the metal plating layer 4 is formed by first forming an iron plating layer 41 of the same quality as the flange member 3 and coating the surface thereof with the hard chrome plating layer 42. It is preferable. That is, first, the iron plating layer 4
After forming No. 1, the iron-plated layer 41 is polished and cut to adjust the outer peripheral surface. Then, by forming the hard chrome plating layer 42 on the surface of the iron plating layer 41, the iron plating layer 41
And a hard chrome-plated layer 42. In this case, the iron-plated layer 41 has good adhesion to the iron forming the flange member 3 and the carbon fiber reinforced plastic forming the tubular body 2 and has a relatively low hardness, and the tubular body 2 and the flange member 3 are , Hard chrome plating layer 4
In addition to having a cushioning role between the two and the coefficient of thermal expansion having a value close to that of carbon fiber reinforced plastic, the drawbacks of carbon fiber reinforced plastic will be improved or modified. Further, the hard chrome plated layer 42 improves the surface hardness and abrasion resistance, protects the surface of the iron plated layer 41, and provides an antioxidation and anticorrosion effect.

It is needless to say that the metal-plated roll 1 uses the cylindrical body 2 made of carbon fiber reinforced plastic, and thus it is possible to obtain light weight, high rigidity, and smooth rotation due to a low moment of inertia. By securing sufficient conductivity between the tubular body 2 and the flange member 3, the tubular body 2 and the flange member 3 can be electroplated at one time, and the manufacturing cost can be reduced by reducing the number of manufacturing steps. Can be planned.

Since the metal plating layer 4 formed by electroplating is continuously provided from the end of the tubular body 2 to the outer peripheral surface of the flange 31 of the flange member 3, the metal plating layer 4 is provided from the end of the tubular body 2 to the metal. The plating layer 4 is prevented from peeling off, and the metal plating roll 1 is provided with excellent durability.
It should be noted that the metal plating layer 4 is rational and effective if it is provided at least on the outer peripheral surface of the flange portion 3 of the flange member 3 as shown in the present embodiment, but especially, only the outer peripheral surface of the flange portion 31 is provided. Is not limited to being provided in
It may be provided on the entire outer surface of the flange member 31.

[0023]

[Example 1] Inner diameter 89 mm, outer diameter 99 mm, length 170
A cylinder made of 0 mm carbon fiber reinforced plastic,
A flange member made of STKM (carbon steel pipe for machine structure) having an adhesive filling groove and a clearance groove manufactured by a lathe was press-bonded with an epoxy adhesive (Araldite AV138 manufactured by Ciba Geigy).

Next, 150 to 300 g / l of ferrous chloride,
50 to 200 g / l of ferrous sulfate and 5 to 50 g of sodium fluoride or sodium borofluoride or ammonium borofluoride to remove the adverse effects of trivalent iron
1, 0.5-5g / l ascorbic acid for antioxidant
Or formic acid 1 to 10 g / l, other organic reducing agent citric acid 5 to 50 g / l or pyrogallol 0.1 to 10
Current density of 1 to 15 in iron plating bath consisting of g / l
Under the plating condition of A / dm ² , the surfaces of these cylindrical body and flange member were uniformly plated with iron with a plating thickness of 0.3 to 1.0 mm.

After iron plating, the thickness of the iron plating layer is about 0.5.
The surface was processed by a lathe so that the thickness became mm, and the upper layer was plated with hard chrome having a thickness of 0.04 to 0.05 mm, and the surface was polished to obtain a desired metal plating roll.

The thus obtained metal-plated roll was subjected to a thermal test (a step of leaving it at each temperature of -40 to 80 ° C. for 1 hour each time was repeated 3 times), but no abnormality occurred.

In the peeling test between the tubular body and the metal plating layer, the peeling interface occurs inside the carbon fiber reinforced plastic forming the tubular body, and the peeling of the interface between the tubular body and the iron plating layer occurs. Was not.

Further, it was confirmed that the metal plating layer was not peeled off even in a dynamic practical test due to vibration and the like, and the product was sufficiently practical.

[0029]

As described above, according to the present invention, since sufficient conductivity can be secured between the flange member and the tubular body, direct electroplating can be performed without providing a conductive treatment layer. Since a strong metal plating layer can be provided, the manufacturing cost can be reduced by reducing the manufacturing process.

Further, a strong metal plating layer can be directly provided by electroplating from the surface of the tubular body to the surface of the flange member, and the tubular body and the flange member are filled in the adhesive filling groove. Since sufficient adhesive strength can be ensured by the adhesive, a metal plating roll that does not easily peel off the metal plating layer and has excellent durability can be obtained.

Further, since the flange portion of the flange member is flush with the outer peripheral surface of the cylindrical body in the bonded state, it is not necessary to wind the end surface of the cylindrical body to form a metal plating layer. Generation of pinholes when forming by winding on the end face and a special anode (anode) for providing a metal plating layer on the end face are not necessary, and finishing of the end face can be omitted.

Further, according to the present invention as set forth in claim 2, the iron plated layer ensures a strong adhesion to the flange member and the tubular body, thereby improving the drawbacks of the carbon fiber reinforced plastic forming the tubular body. In addition to the modification, the hard chrome plating layer improves surface hardness and abrasion resistance, and at the same time protects the surface of the iron plating layer and contributes to oxidation prevention and anticorrosion effects. In addition to the effect of the metal plating roll, excellent surface hardness, wear resistance,
The anticorrosion effect can be realized at a higher level.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the outline of the overall configuration of a metal plating roll.

FIG. 2 is a partially enlarged sectional view showing an end portion of the metal plating roll shown in FIG.

FIG. 3 is a partial enlarged cross-sectional view illustrating a method of press-fitting and adhering a tubular body and a flange member.

FIG. 4 is a partially enlarged cross-sectional view showing an end portion of a conventional metal plating roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plating roll 2 Cylindrical body 21 End surface 3 Flange member 30 Press fitting part 31 Collar part 32 Adhesive filling groove 33 Escape groove 4 Metal plating layer 41 Iron plating layer 42 Hard chrome plating layer 5 Adhesive

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuji Yoshioka 3-16-20 Tsujiya Amagasaki City, Hyogo Prefecture Fuso Co., Ltd. (72) Inventor Shinichi Kawakami 3-16-20 Tsujiya Amagasaki City, Hyogo Prefecture Fuso Incorporated (72) Inventor Junichi Takayama 3-16-20 Tsujiya, Amagasaki City, Hyogo Prefecture Fuso Corporation

Claims (2)

[Claims] 1. A tubular body made of carbon fiber reinforced plastic, and a press-fitting portion capable of being press-fitted inside an end portion of the tubular body. When the press-fitting portion is press-fitted, an outer peripheral surface of the tubular body is formed. A flange member made of a conductive metal in which a flange portion that is flush with the circumference is provided, and a metal plating layer that is coated from the surface of the tubular body to the surface of the flange member, and the outer periphery of the press-fitting portion of the flange member. The surface is provided with an adhesive filling groove, and the base end portion of the flange portion on the press-fitting portion side is provided with an escape groove for preventing buffering with the inner peripheral edge of the tubular body. While the flange member is press-fitted to the inner peripheral surface of the end portion with the adhesive, the adhesive is filled in the adhesive filling groove to secure the adhesive strength between the flange member and the tubular body, and to remove the excess adhesive. Escape into the escape groove and position the inner peripheral edge of the cylindrical body in this escape groove without buffering it. As a result, the end face of the tubular body and the flange portion are brought into direct contact with each other without an adhesive agent, whereby conductivity between the tubular body and the flange member is secured and a strong metal plating layer is formed. A metal-plated roll characterized by being formed. 2. The metal plating according to claim 1, wherein a flange member made of iron is used, and a metal plating layer composed of two layers in which a hard chromium plating layer is coated on the surface of the iron plating layer is used. roll.