JPH0311232Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a conductor roll, and in particular, it involves pushing up the conductor based on the difference in thermal expansion coefficient between the coating layer on the surface of the conductor roll and the conductor;
This is to prevent peeling from the coating layer.

[Conventional technology]

Conventionally, in an electrogalvanizing apparatus, as shown in FIG. 2, a steel plate 9 is sequentially guided by a conductor roll 10 disposed in a plating liquid bath 5 and a deflector roll 8 supported above the conductor roll 10. The galvanizing process is being carried out while being transported.
As shown in FIG. 3, the conductor roll 10 described above has a large diameter section 13 formed at the center of the body 12 of the roll body 11, which has an inverted mountain-shaped cross section with an inner circumferential surface smaller in width than an outer circumferential surface. A conductor 20 formed into an annular shape and made of an acid-resistant alloy (such as Hastelloy) is fitted, and a coating layer 3 having approximately the same thickness as the conductor 20 is fitted.
0 is provided and adhered to the slope 21 of the conductor 20. This coating layer 30 is made of urethane elastomer or rubber, which has excellent abrasion resistance, heat resistance, and corrosion resistance.

[Problem that the invention attempts to solve]

The conductor roll 10 described above has a conductor 20
However, since the urethane elastomer or rubber of the covering layer 30 has a higher coefficient of thermal expansion than the material alloy of the conductor 20, the conductor is heated by the covering layer 30. 20 is pushed up, and as a result, the conductor 20
There is a problem in that the surface of the iron plate that is sent in contact with the steel plate is easily scratched.

Furthermore, when the conductor 20 is pushed up as described above, the joint between the conductor 20 and the coating layer 30 peels off, and the plating liquid that enters through this gap corrodes the roll body 11, reducing its durability. There is a problem.

The purpose of this invention is to solve the above problems and provide a conductor roll having a structure that prevents the conductor from being pushed up.

[Means for Solving the Problems] A cushion layer made of foam is provided on the adhesive surface of the coating layer that contacts the slope of the conductor fitted on the conductor roll.

[Effect]

When the covering layer is heated and expanded, the pushing force applied to the conductor is absorbed and alleviated by the cushion layer. Further, the conductor is not pushed up and peeled off from the coating layer.

〔Example〕

FIG. 1 is a sectional view of the upper half of an embodiment of this invention.

In the same figure, roll body 11 and roll body 1
The conductor 20 fitted into the conductor 1 has the same structure as that explained in FIG.

A cushion layer 32 is adhered to a part of the outer edge of the slope 21 of the conductor 20 described above. This cushion layer 32 is made of a foam material such as polyurethane foam and molded into an annular shape.
Further, a first sealing material 34 is applied to the inner edge side of the slope 21 of the conductor 20 in contact with the cushion layer 32 and the body 12 of the roll body 11. A second sealing material 36 is attached to the second sealing material 12 by biting into a part of the outer edge of the first sealing material 34 .

As the materials for the first sealant 34 and the second sealant 36, it is necessary to select and use materials that have good adhesion to the material for the covering layer 30, which will be described later, and the material for the covering layer 30 should be urethane. When the material is an elastomer, epoxy resin is most suitable, and when the material of the covering layer 30 is rubber, hard natural rubber (ebonite) is most suitable.

Further, it is preferable that the first sealing material 34 and the second sealing material 36 are not made of the above-mentioned materials alone, but are mixed with other materials. For example, the first sealing material 34 may contain an appropriate filler. The second sealing material 36 contains glass fiber as a reinforcing agent.

Covering layer 30 provided on both sides of roll body 11
is adhered to the surface of the roll body 11 and the end face of the conductor 20, and the cushion layer 32 and the first
and is adhered to the surfaces of the second sealing materials 34 and 36.

In manufacturing the conductor roll having the above structure, the cushion layer 32 is attached to the slope 21 of the conductor 20, and the conductor 20 is attached to the large diameter portion 13 of the body 12 of the roll body 11. to fit.

When the covering layer 30 is formed of urethane elastomer, the epoxy resin material of the second sealing material 36 is applied to the body 12 of the roll body 11 to a predetermined thickness and cured before the conductor 20 is fitted. put. Next, the epoxy resin material of the first sealing material 34 is
Slope 21 on the inner edge side of the conductor 20 and the roll body 11
It is poured into the space between the body part 12 and hardened. Subsequently, a liquid urethane elastomer is injected using a casting mold to coat the surface of the roll body 11, the end face of the conductor 20, the cushion layer 32,
It is adhered to the surfaces of the first and second sealants 34 and 36.

When the covering layer 30 is molded from rubber, natural hard rubber is used as the first and second sealing materials 34 and 36, and the rubber of the covering layer 30 is bonded by vulcanization molding.

In the conductor roll formed as described above, since the cushion layer 32 is interposed between the slope 21 of the conductor 20 and the coating layer 30, the coating layer 30 is heated when the conductor 20 is energized. Even when the conductor 20 expands, the force pushing up the conductor 20 is absorbed by the cushion layer 32, so that the pushing up force is alleviated.

In addition, the slope 21 of the conductor 20 and the roll body 11
A first sealing material 34 and a second sealing material 34 are provided between the body 12 of the
Since the sealing materials 34 and 36 are also adhered to the coating layer 30, the plating solution does not enter, and corrosion of the roll body 11 is completely prevented. be able to.

The cushion layer 32 and the first and second sealing materials 34 and 36 of the above embodiment do not necessarily need to be both provided.
6 may be omitted and only the cushion layer 32 may be provided. Further, when only the cushion layer 32 is provided, the conductor 20 is
It may be provided with a width covering not only a part of the slope 21 of the conductor 20 but also almost the entire slope of the slope 21 of the conductor 20 .

[Effect of idea]

As explained above, according to this invention, the cushion layer alleviates the push-up of the conductor due to the difference in thermal expansion coefficient between the conductor of the conductor roll and the covering layer. Not only does this prevent the iron plate being sent in contact with the conductor from being damaged due to abnormal contact with the conductor, but the pushing up force is alleviated and the joint between the conductor and the coating layer peels off. Therefore, the roll body will not be corroded due to penetration of the plating liquid, and a conductor roll with good performance during use and excellent durability can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the upper half showing an embodiment of this invention, Fig. 2 is a schematic side view showing an example of the use of a conductor roll, and Fig. 3 is a longitudinal sectional view of the upper half showing a conventional conductor roll. It is a diagram. In the figure, 11 is the roll body, 12 is the body of the roll body, 20 is the conductor, 21 is the slope of the conductor, 30
3 is a covering layer, and 32 is a cushion layer.

Claims (1)

[Scope of utility model registration request] A conductor formed into an annular shape with an inverted mountain-shaped cross section is fitted into the center of the body of the roll body, and a urethane elastomer or rubber material is applied to the surface of the roll body on both sides of the conductor and the slope of the conductor. 1. A conductor roll formed by adhering a covering layer, characterized in that a cushion layer made of a foam is interposed on the adhesive surface of the covering layer that is in contact with the slope of the conductor.