JPH0111324Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention creates a uniform thin oil film by electrostatically applying a lubricant such as anti-rust oil to the surface of a strip-shaped steel plate, aluminum plate, copper plate, etc. In particular, a high voltage is applied to an oil coating chamber formed with a carry-in port and a carry-out port for loading and unloading a belt-shaped coated object that is continuously transported in a vertical direction at a predetermined speed. An electrostatic oil applicator that supplies an oil lubricant to a cup-shaped body that is driven to rotate at high speed and electrostatically atomizes the oil atomizer is an electrostatic oil applicator that is arranged to face the object from the left and right sides of the object to be oiled. Concerning improvements in oil application equipment.

[Technical background]

2. Description of the Related Art Electrostatic oil applicators are disposed, for example, in a production line for steel strips and are used to form a uniform thin oil film on the surface of the steel plates for purposes such as rust prevention.

By the way, in the final manufacturing process of strip steel sheets on which a thin oil film has been formed, the thin oil film is usually removed in order to apply desired printing to the surface. In order to prevent oil residue, it is necessary to form a uniform oil film over the entire surface.

In addition, in recent years, in order to simplify the manufacturing process, it has become necessary to directly perform desired printing on the formed oil film without removing it. In order to improve the adhesion, it is necessary to form the oil film particularly uniformly and extremely thinly.

In order to meet such demands, for example, DC
-A high voltage of about 80 to 120Kv is applied and about
An electrostatic oil applicator that supplies lubricant to a cup-shaped body that is driven to rotate at a high speed of about 20,000 to 50,000 rpm and electrostatically atomizes it is used. An extremely suitable method is to form an electrostatic field in the cup-shaped body and cause the lubricant particles charged and radiated from the cup-shaped body to be attracted to the surface of the strip-shaped steel plate, which is the opposite pole, by electrostatic attraction, and to be electrostatically coated. .

In addition, in order to form a uniform and ultra-thin oil film on both sides of a strip steel plate using such an electrostatic oil applicator, first, the amount of lubricant supplied into the cup-shaped body is reduced to 1c, for example. It is necessary to control the lubricating agent to a very small amount of about .c./min and to continuously supply a certain amount of the lubricating agent into the cup-shaped body without interruption.

For this purpose, the optimal method is to transport the strip steel plate in the vertical direction and to arrange electrostatic oil applicators on both sides of the strip so as to face each other from the left and right.

According to the method in which the steel strip is covered and the steel strip is transferred horizontally to form an oil film on both the top and bottom surfaces, the electrostatic oil applicator must be placed so as to face the steel strip from above and below. In this case, a very small amount of lubricant is applied to both the cup-shaped body of the electrostatic oil applicator, which is placed downward from above, and the cup-shaped body of the electrostatic oil applicator, which is placed upward from below. It is very difficult to supply oil evenly, but in a method that transfers the steel strip vertically and forms an oil film on both the left and right sides, an electrostatic oil applicator applies oil to the steel strip from the left and right. This is because they are arranged horizontally to face each other, and a minute amount of lubricating agent can be evenly supplied to the electrostatic lubricating machines disposed on both the left and right sides.

Therefore, when performing extremely fine oil application in the past, a belt-shaped object to be oiled, such as a belt-shaped steel plate, is continuously transported in a vertical direction at a predetermined speed, and the object to be oiled is transported in and out. Inside the oiling chamber, which consists of a chamber or casing in which an opening and an outlet are formed,
A so-called vertical pass type electrostatic oil applicator is used, in which an electrostatic oil applicator is horizontally disposed so as to face both left and right sides of an object to be oiled that is vertically transferred.

[Prior art and its problems]

However, in such a conventional vertical path type electrostatic oil applicator, the oil application chamber is integrally formed into a box shape, and loading/unloading ports are formed at the top and bottom of the chamber. When setting oil items along the transfer line, it is necessary to insert the oil into the oil application chamber while maintaining a vertical position from the entrance of the oil application chamber and pull it out from the exit. It had the disadvantage of being extremely difficult.

In addition, when electrostatically applying oil to a relatively wide object that cannot be coated entirely on one side with a single electrostatic oil applicator, it is recommended to install multiple units on both sides of the object. It is necessary to place the electrostatic oil applicators side by side so that they are offset from each other so that the spray patterns of the lubricant emitted from the cup-shaped bodies of adjacent electrostatic oil applicators partially overlap when viewed from the transport direction of the object to be oiled. In order to apply oil evenly and without unevenness, the position of these electrostatic oil applicators must be moved vertically or horizontally relative to the object to be oiled so that each other's spray patterns match the object to be oiled. Adjustments must be made in a timely manner to maintain proper overlap according to the board width.

However, in the case of the conventional electrostatic oil applicator in which the oil application chamber is integrally formed into a box shape as described above, it is not possible to easily move and adjust the electrostatic oil applicator installed in the oil application chamber. It had the following drawback.

[Purpose of invention]

Therefore, the present invention makes it possible to very easily and quickly insert and transport a belt-shaped object to be coated vertically into an oil coating chamber in which loading/unloading ports are formed at the top and bottom. The position of the installed electrostatic oil applicator can be adjusted according to the width of the object to be oiled, the increase or decrease in the amount of oil applied, etc.
It is an object of the present invention to provide an electrostatic oil applicator whose movement can be easily adjusted according to the rotation speed of a cup-shaped body.

[Structure of the idea]

In order to achieve this objective, the present invention provides a high voltage in an oil application chamber in which a carry-in port and a carry-out port are formed for carrying in and out a belt-shaped object to be coated that is continuously transported at a predetermined speed in the vertical direction. An electrostatic oil applicator that supplies an oil lubricant to a cup-shaped body that is driven to rotate at high speed and electrostatically atomizes the oil atomizer is an electrostatic oil applicator that is arranged to face the object from the left and right sides of the object to be oiled. In the oil application device, the oil application chamber is composed of a left half body and a right half body that are separably joined around the object to be oiled, and the electrostatic coating is carried out inside these left half body and right half body, respectively. It is characterized by being equipped with a hydraulic machine.

[Effect of invention]

According to the present invention, the oil application chamber in which the inlet and outlet for the strip-shaped oil object that is continuously transferred in the vertical direction is formed has a left half and a right half with the object to be oiled as the center. When setting the strip of oiled material along its transfer line,
First, the oil application chamber is separated into the left half and the right half, and the object to be oiled is set vertically in this state and joined again, so that the object to be oiled can be placed vertically inside the oil application chamber. can be inserted into the state.

In addition, since the oil application chamber is separated into the left and right halves in this way, the positions of the electrostatic oil applicators installed in the left and right halves can be adjusted according to the board width of the object to be oiled. , the movement can be easily adjusted according to an increase or decrease in the amount of oil applied, the number of rotations of the cup-shaped body, etc.

〔Example〕

Hereinafter, the present invention will be explained based on specific embodiments shown in the drawings.

FIG. 1 is a front view schematically showing an example of an electrostatic oil application device according to the present invention, and FIG. 2 is a side view showing a half of the oil application chamber.

In the figure, reference numeral 1 denotes an electrostatic oil applicator, which is supported by guide rollers 2 and 3 arranged above and below, and is continuously transported at a predetermined speed in the vertical direction indicated by arrow F. The oil application chamber 7 is formed with a carry-in port 5 and a carry-out port 6 for carrying in and out the object 4, and is composed of a left half body 7L and a right half body 7R that are separably joined around the object 4 to be oiled. There is.

At the bottom of the left half body 7L and the right half body 7R, there are wheels 9 running on rails 8L and 8R, which are laid perpendicularly to the object 4 to be oiled, which is vertically supported by guide rollers 2 and 3, respectively. It is permanently installed.

Further, within the left half body 7L and the right half body 7R, there is a support frame 12 for horizontally mounting and supporting the electrostatic oil applicators 10U and 10D with their cup-shaped bodies 11 facing the object 4 to be oiled. It is arranged.

As shown in FIG. 2, the support frame 12 includes horizontal pipes 13 and 14 that are vertically suspended parallel to each other at a predetermined interval, and both ends of the support frame 12 are fitted onto the horizontal pipes 13 and 14 so as to be slidable left and right. It consists of vertical pipes 16 and 17 fixed to a bush pipe 15, and support members 18 are disposed on these vertical pipes 16 and 17, respectively, to attach and support the electrostatic oil applicators 10U and 10D in a vertically slidable manner. has been done.

Each support member 18 is slidably fitted onto the vertical pipe 16 or 17 and is attached to the electrostatic oil applicator 10U or 10.
It is comprised of a bushing pipe 20 that attaches and supports the rear end of the main body 19 of D, and a set screw 21 that fixes the bushing pipe 20 at a desired position.

Note that 22 is a set screw for fixing the bush pipe 15 at a desired position.

The above is an example of the configuration of the electrostatic oil applicator according to the present invention, and the operation thereof will be explained next.

First, when setting the belt-shaped oil object 4 along the transfer line, the left half 7L and the right half 7R of the oil application chamber 7 are separated from each other, and the rails 8 are separated from each other.
The object 4 to be oiled is moved back along lines L and 8R by the required distance in the direction away from the object 4 to be oiled.
is successively spanned over guide rollers 2 and 3 and supported vertically.

Then, the left half body 7L and the right half body 7R are coated with oil object 4.
direction, and are joined together again as shown in FIG.

As a result, the object 4 to be oiled can be easily and quickly inserted through the oil application chamber 7 and between the carry-in port 5 and the carry-out port 6.

Next, a high voltage of about DC -80 to 120 Kv is applied to each cup-shaped body 11 of the electrostatic oil applicator 10U and 10D, and the cup-shaped body 11 is heated to about 20,000 to 120 Kv.
Rotate at a high speed of about 50,000rpm and apply oil to the object 4.
is continuously transferred at a predetermined speed in the direction of arrow F, and at the same time, a lubricant such as rust preventive oil is supplied into each cup-shaped body 11 at a rate of, for example, about 1 c.c./min.

As a result, an electrostatic field is created between the two electrodes, with the cup-shaped body 11 serving as a cathode and the grounded object 4 to be coated as an anode, and the minute particles of the lubricant charged and radiated from the cup-shaped body 11 move to the opposite pole. The oil is attracted to the surface of the object 4 to be oiled by electric attraction, and an extremely thin oil film is formed.

Here, if uneven oil application is found on the surface of the object 4 to be oiled being carried out from the outlet 6 of the oil application chamber 7 due to a defect in the overlapping of the oil spray patterns formed by the cup-shaped body 11. To do this, the operation of the electrostatic oil applicators 10U and 10D and the transfer of the object 4 to be oiled are stopped, and the oil application chamber 7 is separated into a left half 7L and a right half 7R, and each half 7L, Move and adjust the positions of electrostatic oil applicators 10U and 10D disposed in 7R.

At this time, the electrostatic oil applicators 10U and 10D are installed on vertical pipes 16 and 17 that are horizontally slidable along horizontal pipes 13 and 14, respectively, and at the same time Since it is mounted and supported so as to be slidable in the vertical direction along the lines 17 and 17, it can be moved and adjusted in any direction up and down and left and right.

When the movement adjustment of the electrostatic oil applicators 10U and 10D is completed, the left half body 7U and right half body 7R are joined again, and the electrostatic oil applicators 10U and 10D are operated.
Transfer of the object 4 to be oiled is resumed.

As described above, in the electrostatic oil applicator 1, the oil applicator 7 has a left half 7L and a right half 7R centered on the object 4 to be oiled.
Since the structure is such that the left half body 7L and the right half body 7R are separated, when setting the object 4 to be oiled along the transfer line, the left half body 7L and the right half body 7R are separated.
The article to be oiled 4 is moved to the guide rollers 2 and 3 while running on the rails 8L and 8R, respectively, and moved back by a required distance so as to separate from the article 4 to be oiled.
It can be spanned over and supported vertically. Therefore, the anointing material 4 transported in the vertical direction
can be inserted from the carry-in port 5 to the carry-out port 6 of the oil application chamber 7 very easily and quickly.

Moreover, since the oil application chamber 7 is configured to be separable into the left half body 7L and the right half body 7R, the electrostatic oil applicator disposed inside the left half body 7L and the right half body 7R Adjust the positions of 10U and 10D vertically and horizontally according to the plate width of the object to be oiled 4, increase or decrease in the amount of oil applied, rotation speed of the cup-shaped body, etc., to optimally adjust the overlapping of the oil spray patterns. This makes the work extremely easy.

[Effect of idea]

As described above, according to the present invention, it is possible to very easily and quickly insert and set the strip-shaped object to be coated, which is transported in the vertical direction, into the oil coating chamber in which the electrostatic oil applicator is installed. At the same time, there is an excellent effect in that the position adjustment work of the electrostatic oil applicator installed in the oil application chamber can be performed extremely easily.

[Brief explanation of the drawing]

FIG. 1 is a front view schematically showing an example of an electrostatic oil application device according to the present invention, and FIG. 2 is a side view showing a half of the oil application chamber. Explanation of symbols, 1... Electrostatic oil application device, 2, 3...
Guide roller, 4... Belt-shaped oiled object, 5... Carrying inlet, 6... Carrying out outlet, 7... Oil application chamber, 7L... Left half body, 7R... Right half body, 8L, 8R... rail, 9
...Wheels, 10U, 10D...Electrostatic oil applicator, 11
...A cup-shaped body.

Claims (1)

[Claims for Utility Model Registration] (1) A high voltage is applied to an oil application chamber in which an inlet and an outlet are formed for carrying in and out a belt-shaped object to be coated that is continuously transported at a predetermined speed in the vertical direction. An electrostatic oil applicator, which supplies a lubricant to a cup-shaped body which is rotated at high speed and electrostatically atomizes the oil, is arranged so as to face the object from both left and right sides. In the oiling device, the oil application chamber is composed of a left half and a right half that are separably joined around the object to be oiled, and the electrostatic oil applicator is installed inside these left and right halves, respectively. An electrostatic oil application device characterized in that: (2) A plurality of the electrostatic oil applicators are disposed in the left and right halves, respectively, and each of these electrostatic oil applicators is arranged vertically and/or horizontally facing the object to be oiled. The electrostatic oil applicator according to claim 1, wherein the electrostatic oil applicator is adjustable in movement. (3) The scope of the utility model registration claim 1, wherein wheels running on rails laid perpendicular to the object to be oiled are fixed to the bottoms of the left and right halves, respectively. The electrostatic lubrication device described.