JPH06182281A - Driver for immersion roll - Google Patents

Abstract

PURPOSE:To provide a driver for an immersion roll where a mechanical seal for a part through which a roll shaft passes outside a vessel is dispensed with. CONSTITUTION:On the end part of a shaft 2a of an immersion roll in a vessel, Q 1st magnetic pole part 6 equipped with a lot of permanent magnet pieces 13 magnetized in the radial direction of the shaft on the circumference is provided. On the other hand, outside the vessel 3, a 2nd magnetic pole part 7 equipped with a lot of permanent magnet pieces 13 magnetized in the radial direction on the inner surface is directly connected to the rotating shaft of a motor 4. The magnetic pole surfaces of the permanent magnets of 1st and 2nd magnetic pole parts are made opposite to each other through a nonmagnetic material 12 of a covering part 11 and the opposite polarities are reverse or the same. When the motor 4 is rotated, an immersion roll is rotated by the attracting or repulsive force between the 1st and 2nd magnetic pole parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for submerged rolls.

[0002]

2. Description of the Related Art Generally, for driving a submerged roll, a device is known in which a roll bearing and a driving motor are arranged outside a tank. Since the roll shaft is configured to penetrate the side wall of the tank in this device, it is necessary to prevent the liquid in the tank from flowing out of the tank. Has been done.

[0003]

FIG. 4 is an explanatory view of a dipping roll 2 which is dipped in a liquid 10 in a tank 3 such as a plating line, and 1 indicates a strip. FIG. 3 is an explanatory diagram of a conventional drive device. The shaft of the dipping roll 2 penetrates the dipping bath 3 and is supported by a dipping roll bearing 5 provided outside the dipping bath 3. A mechanical seal 8 is provided to prevent the liquid 10 in the tank from flowing out. In the figure, 4 is a motor and 9 is a plummer block.

This drive device has the following problems. (1) The mechanical seal 8 is composed of a fixed ring and a rotating ring, which are sealed by the surface contact of both rings, and the liquid in the tank flows out of the tank due to poor mechanical precision, poor adjustment, ring breakage, etc. The trouble occurs. (2) When an accident such as outflow of liquid in the tank occurs, there are problems such as equipment stoppage (decrease in operation rate), increase in liquid consumption rate, contamination of peripheral equipment, and decrease in safety. (3) In addition, every time the roll is changed, it is necessary to adjust and check the seal portion described in (1), and the roll change time becomes long.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a dipping roll drive device which does not require a melonic seal.

[0006]

The present invention solves the above-mentioned problems and adopts the following technical means. That is, the drive shaft of the dipping roll is located in the non-magnetic material cover provided on the dipping tank wall, the ferromagnetic material is attached to the drive shaft, and the magnetic coupling for transmitting the rotational driving force is opposed to the ferromagnetic material. And a dipping roll driving device, which is provided outside the dipping tank.

[0007]

According to the present invention, the rotational driving force of the motor outside the tank can be transmitted to the drive shaft of the dipping roll by the magnetic coupling. That is, the motor outside the tank and the roll shaft do not have to be in contact with each other, and it is not necessary to place the roll shaft outside the tank more than necessary. Therefore, the roll shaft penetrating portion on the side wall of the tank is unnecessary, and the mechanical seal can be omitted.

[0008]

FIG. 1 shows an embodiment of the present invention. Also, FIG.
Fig. 1 shows a partially enlarged view of Fig. 1. As shown in FIG. 2, the first magnetic pole portion 6 around which a large number of permanent magnet pieces 13 are magnetized in the radial direction of the shaft axis is fixedly provided at the tip of the shaft 2a of the dipping roll 2. Further, the first magnetic pole portion 6 is sealed by the covering portion 11. On the other hand, a second magnetic pole portion 7 is provided outside the tank 3 so as to face the magnetic pole surface of the first magnetic pole portion 6 with the covering portion 11 interposed therebetween. The second magnetic pole portion 7 is directly connected to the rotation shaft of the motor 4 and is configured to rotate. The second magnetic pole portion 7 is configured such that the same number of permanent magnet pieces 13 as the first magnetic pole portion 6 have opposite poles facing each other. In this case, they are of the attraction type, but they may be of the repulsion type so that the same poles of the permanent magnets face each other.

In order to strengthen the magnetic coupling between the first magnetic pole portion 6 and the second magnetic pole portion 7, the portion of the coating portion 11 interposed between the surfaces of the permanent magnets facing each other is non-magnetic. The body 12 is used. Since the present invention is configured as described above, when the second magnetic pole portion 7 is rotated by the rotation of the motor 4, the first magnetic pole portion 6, that is, the dipping roll 2 is rotated by the suction force or the repulsive force. In this embodiment, the permanent magnet pieces 13 are used for both the first magnetic pole portion 6 and the second magnetic pole portion 7, but one may be made of a ferromagnetic material.

[0010]

According to the present invention, since the magnetic coupling is used to transmit the driving force between the motor outside the tank and the dipping roll, the two need not be in contact with each other. It is possible to reduce the space (plasma block part) of the external device, and it is possible to improve workability and reduce equipment costs.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the overall configuration of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an explanatory diagram showing an overall configuration of a conventional technique.

FIG. 4 is an explanatory diagram of a dipping roll.

[Explanation of symbols]

 1 Strip 2 Immersion Roll 2a Roll Shaft 3 Tank 4 Motor 5 Immersion Roll Bearing 6 First Magnetic Pole 7 Second Magnetic Pole 8 Mental Seal 9 Plummer Block 10 Liquid in Tank 11 Cover 12 Non-Magnetic Body 13 Permanent Magnet Piece

Claims (1)

[Claims] 1. A drive shaft of a dipping roll is positioned in a non-magnetic material cover provided on a wall of a dipping tank, and a ferromagnetic material is attached to the drive shaft to provide a magnetic coupling for transmitting a rotational driving force. And a driving device for the dipping roll, which is provided outside the dipping tank so as to face the above.