JPH0414140Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention continuously conveys an object to be coated, such as a steel plate, aluminum plate, or copper plate formed into a belt-shaped plate, and coats the surface with anti-rust, The present invention relates to a lubrication chamber of an electrostatic lubrication device that electrostatically coats a lubrication material to form a uniform thin oil film for the purpose of improving machinability, etc.

[Prior art and its problems]

FIG. 3 is a sectional view showing a conventional oil application chamber 1, in which a rectangular carrying-in port 3 and a rectangular carrying-out port 4 are formed on the left and right sides for carrying in and out a belt-shaped plate body 2 to be coated. Inside, electrostatic oil applicators 5U and 5D are disposed facing each other above and below with the strip plate 2 interposed therebetween.

Then, while continuously conveying the strip plate 2 inserted from the loading port 3 to the loading port 4 of the oil coating chamber 1, the electrostatic oil coating machines 5U and 5D are operated.
The grounded strip plate 2 is used as an anode, DC-40~
Electrostatic oil applicator 5U, 5 that applies high voltage of 120Kv
An electrostatic field is created between the two electrodes using D as a cathode, and the lubricating material is atomized, negatively charged, and sprayed from the electrostatic lubricating machines 5U and 5D.

As a result, the sprayed lubricating material particles are attracted and electrostatically coated on the surface of the strip-shaped plate 2, which is the opposite pole, by electrostatic attraction, and a uniform thin oil film is formed on both sides of the strip-shaped plate 2. It will be done.

By the way, as mentioned above, most of the lubricating material particles sprayed from the electrostatic lubricating machines 5U and 5D are electrostatically coated on the surface of the strip-shaped plate 2, but some of them are attached to the adjacent electrostatic lubricating particles. The lubricating material particles sprayed from the machines 5U and 5U (5D and 5D) and charged with the same polarity repel each other and fly up, floating inside the lubricating chamber 1 and adhering to its inner surface. In addition, if the lubrication chamber 1 is configured to be small due to insufficient installation space and the electrostatic lubrication machines 5U, 5U and the inner surface of the lubrication chamber 1 are close to each other, the lubrication chamber 1 Since it is in a grounded state like the belt-shaped plate 2, some of the lubricating material particles sprayed from the electrostatic lubricating machines 5U, 5U are attracted to the inner surface of the lubricating chamber 1 and directly attached thereto. As a result, the amount of lubricant adhering to the inner surface of the lubricant chamber 1 also becomes particularly large.

When a certain amount of the lubricant adhering to the inner surface of the lubricant chamber 1 reaches a certain amount, droplets are formed and flow down the inner surface, and the upper edges of the carry-in port 3 and the carry-in port 4 This has a serious drawback in that oil drops drop onto the upper surface of the belt-shaped plate 2 during transport, forming a thick oil film called an oil spot on the surface of the belt-shaped plate 2, resulting in uneven oil application.

[Purpose of invention]

Therefore, the present invention aims to prevent the lubricating material sprayed from the electrostatic lubricating machine and attached to the inner surface of the lubricating chamber from dripping onto the upper surface of the strip plate from the upper edges of the loading and unloading ports. Main purpose.

[Structure of the idea]

In order to achieve this purpose, the present invention has an opening formed on the side surface of a loading/unloading port for loading and unloading the belt-shaped plate body to be oiled, and an interior of the belt-shaped plate body for applying oil to the belt-shaped plate body. In the lubrication chamber in which an electrostatic lubrication machine for electrostatic coating is installed, the upper edges of the loading inlet and the loading outlet are tilted downward by a required angle as they face leftward and/or rightward, respectively. It is characterized by

[Effect of invention]

In the oil application chamber according to the present invention, the upper edges of the inlet and the outlet of the strip plate are respectively directed to the left and/or right and are inclined downward, so that the oil is not sprayed from the electrostatic oil applicator. When the lubricating material adhered to the inner surface of the lubricating chamber forms droplets and flows down to the upper edges of the loading and unloading ports, the lubricating material adheres to the inner surface of the lubricating chamber and flows down the slope of the upper edges due to its own weight to the conveyance path of the strip plate. It is guided outside and prevented from dripping onto the top surface of the strip plate.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 is a front view showing an example of an oil application chamber according to the present invention, and FIG. 2 is a sectional view taken along the line A--A.

Note that parts common to those in FIG. 3 are designated by the same reference numerals, and detailed explanation thereof will be omitted.

In this example, the upper edges 6 of the carry-in port 3 and the carry-out port 4 formed on the side surface of the oil application chamber 1 are configured to be inclined downward toward the left and right from approximately the center thereof, respectively. has been done.

Both end sides of the upper edge 6 inclined downward are extended outside the conveyance path of the strip plate 2, and the upper edge 6
A chevron-shaped gutter 7 is fixed to the inner surface of the oil application chamber 1 along.

The gutter 7 is integrally formed with an insulating plate 8 attached to the upper inner surface of the oil application chamber 1.

The insulating board 8 is made of, for example, vinyl chloride, acrylic,
It is manufactured from insulating materials such as epoxy, polyethylene, polypropylene, acetal resin, or fluororesin.

In addition, numeral 9 in the figure is an oil object insertion opening formed on one side of the oil application chamber 1 along the conveyance path of the strip plate body 2.

First, the belt-shaped plate body 2 to be oiled is inserted horizontally into the oil application chamber 1 from the oiled object insertion port 9, and then inserted between the carry-in port 3 and the carry-out port 4.

In this state, as shown in Figure 3, the electrostatic oil applicator 5U
and 5D, the belt-shaped plate 2 is continuously conveyed at a predetermined speed, and the electrostatic oil applicators 5U and 5D are operated.
The lubricating material is atomized and sprayed.

At this time, some of the lubricating material particles sprayed from the upper electrostatic lubricating machines 5U, 5U float and adhere to the surface of the insulating plate 8 attached to the inner surface of the lubricating chamber 1.

When a certain amount of the lubricant adhered to the insulating plate 8 is reached, droplets are formed and flow downward.
It is received by a chevron-shaped gutter 7 arranged along the slope of the upper edge 6 of each of the loading inlet 3 and the unloading outlet 4, and is guided out of the conveyance path of the strip plate 2 along the left and right slopes of the gutter 7. The oil is dripped onto the bottom of the oil application chamber 1 from both the left and right ends of the gutter 7.

As described above, according to the present invention, the lubricant that has adhered to the inner surface of the lubricant chamber 1 and flowed down to the upper edges 6 of the loading port 3 and the loading port 4 can be Since it is received by the gutter 7 disposed along the edge 6 and guided out of the conveyance path of the strip plate 2,
It is possible to reliably prevent droplets of the lubricating material from dripping onto the upper surface of the band-shaped plate body 2 from the upper edges of the carry-in port and the carry-out port, as in the conventional case, and thereby causing uneven lubricating.

Further, in the above embodiment, since the upper edge 6 is inclined from the center toward both left and right ends, for example, when the upper edge 6 is inclined only in one direction from one end to the other, In comparison, the opening area of the loading/unloading port 3 and the loading/unloading port 4 can be made smaller, and the oil application chamber 1 can be accessed from these loading/unloading ports 3 and 4.
Leakage of lubricant to the outside can be suppressed to a minimum.

Furthermore, if an insulating plate 8 is attached to the inner surface of the oil application chamber 1 as in the embodiment, the electrostatic oil application machines 5U and 5U
This prevents the negatively charged lubricating material particles ejected from directly adsorbing onto the inner surface of the adjacent lubricating chamber 1, so that they may adhere to the inner surface of the lubricating chamber 1 and cause the inlet 3 and the outlet. There is an advantage that the amount of lubricating material flowing down to the upper edge 6 of 4 can be significantly reduced.

In the embodiment, a case has been described in which the gutter 7 is arranged along the slope of the upper edge 6 on the inner surface of the oil application chamber 1, but in the present invention, the gutter 7 is omitted and the gutter 7 is provided on the inner surface of the oil application chamber 1. Of course, it is also possible to guide the lubricant flowing down to the outside of the conveyance path of the strip plate 2 along its lower surface.

In addition, in the present invention, the upper edges 6 of the entrance 3 and the exit 4 are not limited to the case where the upper edges 6 of the entrance 3 and the exit 4 are tilted leftward and rightward and downward from the center as in the above embodiment; Of course, the upper edges 6' of the carry-in port 3 and the carry-out port 4 may be inclined downward from one end side to the other end side, as shown in FIG.

[Effect of idea]

As described above, according to the present invention, when the lubricating material sprayed from the electrostatic lubricating machine and attached to the inner surface of the lubricating chamber flows down to the upper edge of the carry-in port and the carry-out port, the left side and / Or the belt-shaped plate to be oiled is guided out of the conveyance path along the upper edge which is inclined downward as it goes to the right, so that the upper edge of the loading inlet and the unloading outlet as in the conventional case. This has an excellent effect in that the lubricating material that has flowed down does not turn into droplets and drip onto the upper surface of the band-shaped plate, thereby reliably preventing the occurrence of uneven lubricating.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of an oil application chamber according to the present invention, FIG. 2 is a sectional view taken along the line A--A, and FIG. 3 is a sectional view showing a conventional oil application chamber. Explanation of symbols, 1... Oil application chamber, 2... Strip plate, 3... Carrying inlet, 4... Carrying out outlet, 5U, 5D
...Electrostatic oil applicator, 6,6'...Top edge.

Claims (1)

[Claims for Utility Model Registration] (1) A loading port and an exit for loading and unloading a belt-shaped plate to be oiled are formed on the side, and an opening is formed inside for carrying in and out the belt-shaped plate to be oiled. In a lubrication chamber where an electrostatic lubrication machine is installed,
An oil application chamber characterized in that upper edges of the carry-in port and the carry-out port are tilted downward by a predetermined angle toward the left and/or right, respectively. (2) The oil application chamber according to claim 1 of the utility model registration claim, wherein the upper edges of the inlet and the outlet are respectively inclined downward from substantially the center to the left and right. (3) The oil application chamber according to claim 1 of the utility model registration, wherein the upper edges of the inlet and the outlet are respectively inclined downward from one end to the other.