JP5728905B2 - Paint stirrer in roll coating equipment - Google Patents

Description

  The present invention relates to a paint agitating device for agitating paint contained in a paint containing pan in a roll coating facility for painting paint on a strip-like material such as a steel strip via a roll.

Conventionally, as a facility for coating paint on a strip-like material such as a steel strip that is continuously conveyed, for example, a paint-storing pan that contains paint to be coated on the surface of the strip-like material, and a paint-storing pan There is a roll coating facility equipped with a pick-up roll that is partially immersed in the paint.
In the coating of the paint performed in such a roll coating facility, the treatment is performed under coating conditions according to the target film thickness after drying, the appearance after coating, and the like. Here, the coating conditions include, for example, a peripheral speed, which is a rotational speed of the roll, a nip pressure between rolls provided in a plurality of roll coating facilities, a processing speed for coating a steel strip, a coating concentration, and the like.

  In addition, the coating material used for the coating as described above is generally used by appropriately diluting with water or an organic solvent in order to adjust the concentration and viscosity of the coating material. In such a paint, a component having a particle size such as a pigment may be added in a state where it does not dissolve in water or an organic solvent. In such a case, the larger the specific gravity of the pigment or the like compared to the specific gravity of the paint, there is a problem that it is more likely to settle. For example, metal powder or the like often has a large specific gravity as compared with the specific gravity of the paint, and is likely to cause a problem of settling in the paint containing pan.

  In this way, when the specific gravity of the pigment or the like is larger than the specific gravity of the paint, the specific gravity in the paint containing pan is not limited even if swirling or circulating agitation is performed before the paint is put into the paint containing pan. Large pigments and the like will precipitate. For example, if nickel powder (Ni specific gravity of about 8.9) is contained in a paint having a specific gravity of 1.05, if the paint container is left without stirring in the paint container pan, the bottom surface of the paint container pan is made of nickel. A precipitate layer is formed in a short time.

For this reason, if coating is performed in such a state, nickel powder and the like will decrease with time, so a coating with less precipitated components such as nickel powder will be applied. The problem of not being able to paint occurs.
In order to solve this problem, for example, a technique described in Patent Document 1 has been proposed as a technique for stirring the paint contained in the paint containing pan.

The technique described in Patent Document 1 is provided with a plurality of fins for stirring the paint contained in the paint containing pan at both ends of the pickup roll in the rotation axis direction.
However, in the technique described in Patent Document 1, since the degree of agitation differs between the periphery of the fin and the position away from the fin, there is a problem that the components of the paint to be applied are biased depending on the position from the fin. .
For this problem, for example, the techniques described in Patent Documents 2 and 3 have been proposed as techniques for stirring the paint contained in the paint containing pan and suppressing the bias of the components of the paint in the paint containing pan. .

The technique described in Patent Document 2 is an apparatus including a rod-like base that reciprocates in the axial direction of a pickup roll, and a plurality of stirring rods attached to the base. It is formed from an attached round bar and a stirring plate attached to the lower part of the round bar and placed in the paint.
The technique described in Patent Document 3 includes a support frame that reciprocates in the axial direction of the pick-up roll, and a plurality of elongated stirring members that are attached to the support frame and extend substantially the full width of the paint containing pan. It is an apparatus and each stirring member is arrange | positioned in the coating material accommodated in the coating material accommodation pan.

JP-A-9-239304 JP-A-5-212333 Japanese Utility Model Publication No. 3-28944

  Certainly, according to the devices described in Patent Documents 2 and 3, although the nonuniformity depending on the place at which the paint is stirred is improved rather than the stirring by the fin, the difference between the specific gravity of the pigment and the specific gravity of the paint is largely settled. If it is easy, the problem of insufficient stirring remains. Therefore, it is difficult to uniformly agitate the paint deposited over a wide range on the bottom surface of the paint containing pan and the paint containing a pigment having a large specific gravity difference.

For this reason, even in the devices described in Patent Documents 2 and 3, when the paint contains a pigment having a large specific gravity difference from the paint, a uniform coating film of the component is formed on the belt-like material such as a steel strip. There is a risk that it will be difficult to do.
The present invention has been made paying attention to the above problems, and even if the paint contains a pigment having a large specific gravity difference from the paint, the coating film formed on the belt-like material such as a steel strip. It is an object of the present invention to provide a paint stirrer in a roll coating facility that can make components uniform.

In order to solve the above-described problems, the invention described in claim 1 of the present invention includes a blade portion disposed in the paint contained in the paint containing pan,
A blade reciprocating means for reciprocating the blade part along the axial direction of a pick-up roll at least a part of which is immersed in the paint, and a paint agitator in a roll coating facility comprising:
A stirring member attached to the blade portion and disposed in a position close to or in contact with the bottom surface of the paint containing pan in the paint;
The stirring member is a flat plate-like member having a plurality of openings and is disposed along the bottom surface of the paint containing pan ,
The total area of the plurality of apertures is characterized in der Rukoto 50% or more relative to the area of the stirring member.

According to the present invention, the stirring member, which is a flat plate member having a plurality of openings, is disposed in the paint at a position close to or in contact with the bottom surface of the paint containing pan, along with the blade portion, along the axial direction of the pickup roll. Can be moved back and forth.
For this reason, the stirring member can stir the paint contained in the paint containing pan at a position close to or in contact with the bottom surface of the paint containing pan. Can be uniformly diffused into the paint.
Here, the direction in which the stirring member and the blade portion are reciprocated may be a direction parallel to the axial direction of the pickup roll, or may be a direction inclined with respect to the axial direction of the pickup roll.

Next, of the present invention, the invention described in claim 2 is the invention described in claim 1, wherein the stirring member is a net-shaped member made of metal or resin. It is.
According to the present invention, since the stirring member is a metal or resin mesh-shaped member, the wire or the like of the mesh-shaped member winds up powder or the like that has settled on the bottom surface of the paint-containing pan into the paint. Since the powder or the like passes through the opening of the net-shaped member, the paint can be efficiently stirred.

Next, of the present invention, the invention described in claim 3 is the invention described in claim 1 or claim 2, wherein at least the stirring member of the blade portion and the stirring member is viewed from above and below. And the pickup roll.
According to the present invention, since at least one of the blade portion and the stirring member overlaps with the pickup roll as viewed from above and below, at least the paint existing below the pickup roll among the paint contained in the paint containing pan is used. Stirring can be efficiently performed by the stirring member.
For this reason, the paint lifted from the paint containing pan by the pickup roll can be a paint in which the powder or the like precipitated on the bottom surface of the paint containing pan is uniformly diffused.

Next, among the present inventions, the invention described in claim 4 is the invention described in any one of claims 1 to 3, wherein the blade portion and the stirring member are the pickup roll. Extending in a direction orthogonal or substantially orthogonal to the axial direction of
The length of the blade part and the stirring member in the extending direction is 50% or more of the length of the paint containing pan in the direction perpendicular to the axial direction of the pickup roll. It is a feature.

According to the present invention, the length of the blade portion and the stirring member in the extending direction is set to a length of 50 [%] or more with respect to the length in the direction orthogonal to the axial direction of the pickup roll of the paint containing pan. Yes.
For this reason, it becomes possible to directly stir 50% or more of the paint contained in the paint containing pan by the blade portion and the stirring member that reciprocate along the axial direction of the pickup roll.
Here, the upper limit value of the length in the extending direction of the blade portion and the stirring member with respect to the length in the direction orthogonal to the axial direction of the pick-up roll of the paint containing pan is set to a length of less than 100 [%]. This prevents contact between the paint-containing pan, the blade portion, and the stirring member.

Next, among the present inventions, the invention described in claim 5 is the invention described in any one of claims 1 to 4, wherein the stirring member is disposed below the blade portion. And
The distance between the liquid level of the paint contained in the paint containing pan and the blade portion is 70% or more of the depth of the paint contained in the paint containing pan. Is.
According to the present invention, the stirring member is disposed below the blade portion, and the distance between the liquid level of the paint contained in the paint containing pan and the blade portion is set to the depth of the paint contained in the paint containing pan. Therefore, the distance is 70% or more.

For this reason, in the paint accommodated in the paint containing pan, the position where the blade portion and the stirring member are arranged can be separated from the liquid level of the paint, and the liquid level generated when the paint is stirred. It becomes possible to suppress the roughening of.
Here, the upper limit value of the distance between the liquid level of the paint contained in the paint containing pan and the blade part with respect to the depth of the paint contained in the paint containing pan is parallel to the paint depth of the blade part and the stirring member. Set according to the length in any direction. This is, for example, a value at which the stirring member does not press the bottom surface of the paint containing pan.

  According to the present invention, it is possible to uniformly disperse the powder or the like precipitated on the bottom surface of the paint containing pan into the paint, and therefore, the paint contains a pigment or the like having a large specific gravity difference from the paint. However, it becomes possible to make uniform the components of the coating film formed on the strip-shaped material such as a steel strip.

It is a top view which shows schematic structure of the coating material stirring apparatus of this invention. FIG. 2 is a view taken along line II in FIG. 1.

(First embodiment)
Hereinafter, a first embodiment of the present invention (hereinafter referred to as “the present embodiment”) will be described with reference to the drawings.
(Constitution)
First, the configuration of a paint stirrer (hereinafter referred to as “paint stirrer”) in the roll coating facility of this embodiment will be described with reference to FIGS. 1 and 2.
FIG. 1 is a top view showing a schematic configuration of a paint stirring apparatus 1 of the present embodiment, and FIG. 2 is a view taken along the line II in FIG.
As shown in FIG. 1 and FIG. 2, the paint stirring device 1 of this embodiment is a device for stirring the paint 4 stored in the paint storage pan 2, and includes a blade portion 6 and a blade portion reciprocating means. 8 and a stirring member 10 are provided.

The blade portion 6 is disposed in the paint 4 accommodated in the paint containing pan 2 and extends in a direction orthogonal or substantially orthogonal to the axial direction of the pickup roll 12.
Here, the pickup roll 12 and related configurations will be described.
The pickup roll 12 is a columnar or cylindrical member (roll) formed using a metal material, and is rotatably supported by a support member (not shown).

The pickup roll 12 is arranged so that a part, specifically, at least the lower part of the peripheral surface is immersed in the paint 4 contained in the paint containing pan 2. The applied paint 4 is lifted from the paint containing pan 2 and transferred to the applicator roll 14.
The applicator roll 14 is a cylindrical or cylindrical member (roll) in contact with the peripheral surface of the pickup roll 12 and the surface (painted surface) of a strip-shaped material (not shown), and can be rotated by a support member outside the figure. It is supported. Therefore, the coating material 4 lifted from the coating material storage pan 2 by the pickup roll 12 is transferred onto the peripheral surface of the applicator roll 14, and the transferred coating material 4 is applied to the surface of the belt-shaped material to form a coating film.
In the present embodiment, a coating containing Ni (nickel) metal powder as a component that easily settles is applied to the cold-rolled steel sheet that has been plated and ground.

Hereinafter, it returns to description of the structure of the coating material stirring apparatus 1. FIG.
The length Lb in the extending direction of the blade portion 6 (the direction orthogonal or substantially orthogonal to the axial direction of the pickup roll 12) is the length Lp of the paint containing pan 2 in the direction orthogonal to the axial direction of the pickup roll 12. In contrast, the length is 50% or more. That is, there is a relationship of Lb ≧ 0.5 Lp between the length Lb in the extending direction of the blade portion 6 and the length Lp of the paint containing pan 2 in the direction orthogonal to the axial direction of the pickup roll 12. The formula holds.
Here, the upper limit value of the length Lb in the extending direction of the blade portion 6 with respect to the length Lp in the direction orthogonal to the axial direction of the pickup roll 12 of the paint containing pan 2 is a length less than 100 [%]. It has become. This prevents contact between the paint containing pan 2 and the blade portion 6.

The distance Rb between the liquid level of the paint 4 accommodated in the paint containing pan 2 and the blade portion 6 is a distance of 70% or more with respect to the depth D of the paint 4 contained in the paint containing pan 2. It has become. That is, Rb ≧ 0.7D between the distance Rb between the liquid level of the paint 4 contained in the paint containing pan 2 and the blade portion 6 and the depth D of the paint 4 contained in the paint containing pan 2. The following relational expression holds.
Here, the upper limit value of the distance Rb between the liquid level of the paint 4 contained in the paint containing pan 2 and the blade part 6 with respect to the depth D of the paint 4 contained in the paint containing pan 2 is the blade part. 6 and the stirring member 10 are set according to the length in the direction parallel to the depth of the paint 4 (vertical direction in FIG. 2). This is, for example, a value at which the stirring member 10 does not press the bottom surface of the paint containing pan 2.

Further, the blade portion 6 overlaps with the pickup roll 12 when viewed from the up-down direction.
The blade part reciprocating means 8 includes a blade support part 16 and a blade drive part 18.
The blade support portion 16 is a plate-like member that is connected to the blade drive portion 18 at the upper portion and disposed in the paint 4 accommodated in the paint containing pan 2 at the lower portion. The blade portion 6 is supported from above in a state of being parallel to the axial direction.
Here, in this embodiment, as shown in FIG. 1, the case where the blade support part 16 is comprised from the five blade support parts 16a-16e which respectively support the five blade parts 6 is demonstrated.

Further, the blade support portion 16 has a through hole 20 that penetrates in the axial direction of the pickup roll 12. Here, the shape of the through hole 20 is a shape corresponding to the shape of the portion of the blade support portion 16 that is disposed in the paint 4 contained in the paint containing pan 2.
The configuration of the blade support portion 16 may be a configuration that does not have the through hole 20.
The blade drive unit 18 is formed with, for example, an air cylinder or the like as a drive source. The blade support unit 16 reciprocates along the axial direction of the pickup roll 12 by driving the drive source. As a drive source, a motor or the like may be used in addition to the air cylinder.

When each blade support portion 16 is reciprocated along the axial direction of the pickup roll 12, the stirring member 10 and the blade portion 6 reciprocate along the axial direction of the pickup roll 12.
Here, the direction in which the stirring member 10 and the blade portion 6 are reciprocated may be a direction parallel to the axial direction of the pickup roll 12, or a direction inclined with respect to the axial direction of the pickup roll 12. Also good.

Further, when the blade drive unit 18 reciprocates each blade support unit 16 by driving a drive source, the blade support unit 16a and the blade support unit 16e disposed on both ends in the displacement direction are respectively paints. The drive source is driven so as to move to a position close to the wall surface of the storage pan 2. Thereby, the width in which each blade support part 16a-16e reciprocates is made into the width direction length or more of the pick-up roll 12, and the width to which the five blade parts 6 reciprocate is made into the width direction length or more of the pick-up roll 12 or more. Yes.
The stirring member 10 is disposed below the blade portion 6 and attached to the blade portion 6, and is disposed in the paint 4 at a position close to or in contact with the bottom surface of the paint containing pan 2. The means for attaching the stirring member 10 to the blade portion 6 is not particularly limited, and for example, fixing by welding, adhesion, etc., fixing by a wire, a bolt, or the like is used.

The stirring member 10 is a flat plate member having a plurality of openings, and is arranged along the bottom surface of the paint containing pan 2.
The stirring member 10 may be a flat plate member having a plurality of openings. The size of the opening is not particularly limited, but if the opening is too small, the stirring ability may be insufficient, or precipitation may accumulate at the bottom of the stirring member, so the opening area is 50% or more. It is preferable that This is particularly suitable in the case of a metal or resin mesh member. In the present embodiment, the stirring member 10 is a wire mesh formed using a metal material such as SUS (the shape of each opening is square, and the length of one side forming each opening is 10 [mm]). A certain wire mesh) was used. The material of the stirring member 10 is not particularly limited, but a member that can withstand chemical resistance and wear against the paint is preferable, and examples thereof include metal and resin.

  In addition, the stirring member 10 extends in a direction orthogonal or substantially orthogonal to the axial direction of the pickup roll 12, similar to the blade portion 6, and the extending direction of the stirring member 10 (or orthogonal to the axial direction of the pickup roll 12 or The length Ln in the substantially orthogonal direction) is 50% or more of the length Lp of the paint containing pan 2 in the direction orthogonal to the axial direction of the pickup roll 12. That is, like the blade portion 6, the length Ln between the length Ln in the extending direction of the stirring member 10 and the length Lp in the direction perpendicular to the axial direction of the pickup roll 12 of the paint containing pan 2 is Ln. A relational expression of ≧ 0.5 Lp is established.

Here, the upper limit value of the length Ln in the extending direction of the stirring member 10 with respect to the length Lp in the direction orthogonal to the axial direction of the pickup roll 12 of the paint containing pan 2 is a length less than 100 [%]. It has become. Thereby, the contact between the paint containing pan 2 and the stirring member 10 is prevented.
Further, the stirring member 10 is overlapped with the pickup roll 12 when viewed from above and below, like the blade portion 6.

(Operation)
Hereinafter, with reference to FIG.1 and FIG.2, the operation | movement at the time of stirring the coating material 4 accommodated in the coating material accommodation pan 2 using the coating material stirring apparatus 1 of this embodiment is demonstrated.
When the paint 4 contained in the paint containing pan 2 is stirred using the paint stirring device 1, each blade portion 6 and the stirring member 10 are arranged in the paint 4 contained in the paint containing pan 2. Then, the drive source provided in the blade drive unit 18 is driven to reciprocate the blade support units 16 a to 16 e along the axial direction of the pickup roll 12. Thereby, each blade part 6 and the stirring member 10 are reciprocated along the axial direction of the pickup roll 12.

At this time, the blade drive unit 18 drives the drive source so that the blade support unit 16a and the blade support unit 16e move to positions close to the wall surface of the paint containing pan 2, respectively. Is set to be equal to or larger than the length of the pickup roll 12 in the width direction.
The stirring member 10 is a wire mesh that is a flat plate-like member having a plurality of openings. The bottom surface of the paint containing pan 2 faces the other and the bottom surface of the paint containing pan 2 in the paint 4. Are arranged along.

  For this reason, for example, a pigment having a large specific gravity (in this embodiment, nickel) contained in the paint 4 is precipitated in the paint containing pan 2 such as when several hours have passed since the paint 4 was contained in the paint containing pan 2. In this state, the precipitated pigment having a large specific gravity is agitated by the agitating member 10 and each blade portion 6, particularly the agitating member 10, at a width equal to or greater than the width of the pickup roll 12.

When the pigment having a large specific gravity precipitated in the paint containing pan 2 is stirred by the stirring member 10 and each blade portion 6, the pigment having a large specific gravity deposited in the paint containing pan 2 is wound up in the paint 4, and the paint 4 evenly diffuse.
When the pigment having a large specific gravity precipitated in the paint containing pan 2 is uniformly diffused into the paint 4, the paint components are uniformly mixed in the paint 4. That is, it is possible to suppress the precipitation of nickel in the paint 4 by stirring the paint 4 contained in the paint containing pan 2 by the stirring member 10 and each blade portion 6.
For this reason, when the coating material 4 is applied to the belt-like material, the coating material 4 in which the components are uniformly mixed is transferred to the peripheral surface of the applicator roll 14, so that the formed coating film has a uniform component. It becomes a painted film.

(Effects of the first embodiment)
The effects of this embodiment are listed below.
(1) In the paint stirring apparatus 1 of the present embodiment, the stirring member 10 that is a flat plate member having a plurality of openings is disposed in the paint 4 at a position close to or in contact with the bottom surface of the paint containing pan 2. Together with the blade portion 6, it is possible to reciprocate along the axial direction of the pickup roll 12.

Therefore, the stirring member 10 can stir the paint 4 contained in the paint containing pan 2 at a position close to or in contact with the bottom surface of the paint containing pan 2. It is possible to uniformly diffuse the metal powder that is being dispersed into the paint 4.
As a result, even when the paint 4 contains a pigment having a large specific gravity, the components of the coating film formed on the belt-shaped material can be made uniform.

(2) In the paint agitation apparatus 1 of the present embodiment, a pigment having a high specific gravity such as metal powder precipitated on the bottom surface of the paint containing pan 2 by the wire part of the metal mesh by using the agitation member 10 as a metal mesh, It can be rolled up into the paint 4. In addition to this, since the pigment having a large specific gravity such as metal powder wound up from the bottom surface of the paint containing pan 2 passes through the opening of the wire mesh, the paint 4 can be efficiently stirred.
As a result, the stirring member 10 that is a flat member having a plurality of openings can be easily formed using a wire mesh having a general configuration, and the paint 4 is nickel or the like and has a large specific gravity. Even when a pigment having a large specific gravity, such as metal powder, is included, the components of the coating film formed on the belt-shaped material can be made uniform.

(3) In the paint stirring apparatus 1 of the present embodiment, the blade portion 6 and the stirring member 10 overlap the pickup roll 12 when viewed from the up-down direction, so that the paint 4 stored in the paint storage pan 2 can be obtained. Among these, the paint 4 existing below the pickup roll 12 can be efficiently stirred by the blade portion 6 and the stirring member 10.
As a result, the paint 4 lifted from the paint containing pan 2 by the pick-up roll 12 can be made into a paint 4 in which a pigment having a large specific gravity, such as a metal powder that easily settles on the bottom surface of the paint containing pan 2, is uniformly diffused. It becomes.

(4) In the paint stirring apparatus 1 of the present embodiment, the length (Lb, Ln) of the blade portion 6 and the stirring member 10 in the extending direction is orthogonal to the axial direction of the pickup roll 12 of the paint containing pan 2. The length is 50% or more with respect to the length (Lp).
Therefore, it is possible to directly stir 50% or more of the paint 4 contained in the paint containing pan 2 by the blade portion 6 and the stirring member 10 that reciprocate along the axial direction of the pickup roll 12. It becomes.
As a result, 50 [%] or more of the paint 4 contained in the paint containing pan 2 can be efficiently stirred by the blade portion 6 and the stirring member 10.

(5) In the paint stirring device 1 of the present embodiment, the stirring member 10 is disposed below the blade portion 6, and the distance (Rb) between the liquid level of the paint 4 contained in the paint containing pan 2 and the blade portion 6 is further provided. ) Is set to a distance of 70% or more with respect to the depth (D) of the paint 4 contained in the paint containing pan 2.
As a result, in the paint 4 accommodated in the paint containing pan 2, the position where the blade portion 6 and the stirring member 10 are arranged can be set away from the liquid level of the paint 4. It is possible to suppress the roughening of the liquid surface that occurs at times. This is an effect exhibited also by the through-hole 20 which the blade support part 16 has.

(Application examples)
Hereinafter, application examples of this embodiment will be listed.
(1) In the paint stirring apparatus 1 of the present embodiment, the stirring member 10 is formed of a wire mesh. However, the present invention is not limited to this, and the stirring member 10 may be formed of a perforated plate such as punching metal, for example. .
(2) In the paint stirring apparatus 1 of the present embodiment, the blade unit 6 and the stirring member 10 are configured to overlap the pickup roll 12 when viewed from the vertical direction, but the present invention is not limited to this. And it is good also as a structure where the stirring member 10 does not overlap with the pick-up roll 12 seeing from the up-down direction.

(3) In the paint stirring apparatus 1 of the present embodiment, the length (Lb, Ln) in the extending direction of the blade portion 6 and the stirring member 10 is a direction orthogonal to the axial direction of the pickup roll 12 of the paint containing pan 2. Although the length is 50% or more with respect to the length (Lp), the present invention is not limited to this. That is, the length (Lb, Ln) in the extending direction of the blade portion 6 and the stirring member 10 is set to the length (Lp) in the direction orthogonal to the axial direction of the pickup roll 12 of the paint containing pan 2. The length may be less than 50 [%].

(4) In the paint agitation apparatus 1 of the present embodiment, the distance (Rb) between the liquid level of the paint 4 contained in the paint containing pan 2 and the blade portion 6 is set to the depth of the paint 4 contained in the paint containing pan 2. The distance is 70% or more with respect to (D), but is not limited to this. That is, the distance (Rb) between the liquid level of the paint 4 accommodated in the paint containing pan 2 and the blade portion 6 is 70 [%] with respect to the depth (D) of the paint 4 contained in the paint containing pan 2. The distance may be less than [].

(Example)
Hereinafter, with reference to FIG.1 and FIG.2, the result of having verified the effect which the coating material stirring apparatus 1 of this invention example show | plays is demonstrated.
In the present example, as in the first embodiment described above, the paint is a paint containing nickel powder as in the first embodiment described above.
The paint stirring apparatus 1 of the present invention example has the same configuration as that of the first embodiment described above.
On the other hand, the paint stirring apparatus of the comparative example has the same configuration as that of the first embodiment described above except that the stirring member 10 is not provided.

And the coating material 4 accommodated in the coating material storage pan 2 was stirred using the coating material stirring device of the present invention example and the comparative example, respectively, and the work of coating the stirred coating material 4 on the above-described band-shaped material was performed.
As a result, in the work using the paint agitator of the comparative example, about 1.6% of the coated steel sheet that cannot be shipped as a product occurred because the components of the paint film were not uniformized (with the film after painting, It was judged that the product could not be shipped when there was a place where the amount of nickel to be contained in the coating component was less than 80 when the amount of nickel to be contained was 100).

On the other hand, in the operation using the paint stirring apparatus 1 of the present invention example, about 0.21% of a coated steel sheet that cannot be shipped as a product was generated because the components of the coating film were not uniformized.
Therefore, in the paint stirring apparatus 1 of the present invention example, it was confirmed that the generation rate of the coated steel sheet that cannot be shipped as a product can be reduced as compared with the paint stirring apparatus of the comparative example.
As a result, it was confirmed that the paint stirring device 1 of the present invention example can improve the production efficiency, reduce the manufacturing cost, and save resources compared to the paint stirring device of the comparative example.

DESCRIPTION OF SYMBOLS 1 Paint stirring apparatus 2 Paint storage pan 4 Paint 6 Blade part 8 Blade part reciprocating means 10 Stirring member 12 Pickup roll 14 Applicator roll 16 Blade support part 18 Blade drive part 20 Through-hole Lb The length in the extending direction of the blade part 6 Lp The length of the paint containing pan 2 in the direction orthogonal to the axial direction of the pickup roll 12 Rb The distance between the liquid level of the paint 4 contained in the paint containing pan 2 and the blade part D D Housed in the paint containing pan 2 Depth of the applied paint 4 Ln Length in the extending direction of the stirring member 10

Claims (5)

A blade portion disposed in the paint contained in the paint containing pan;
A blade reciprocating means for reciprocating the blade part along the axial direction of a pick-up roll at least a part of which is immersed in the paint, and a paint agitator in a roll coating facility comprising:
A stirring member attached to the blade portion and disposed in a position close to or in contact with the bottom surface of the paint containing pan in the paint;
The stirring member is a flat plate-like member having a plurality of openings and is disposed along the bottom surface of the paint containing pan ,
Wherein the plurality of the total area of the openings, paint stirrer in roll coating equipment, characterized in der Rukoto 50% or more relative to the area of the stirring member.   The paint stirring device in a roll coating facility according to claim 1, wherein the stirring member is a metal or resin net-shaped member.   The paint agitating device in the roll coating facility according to claim 1 or 2, wherein at least the agitating member of the blade portion and the agitating member overlaps with the pickup roll as viewed from above and below. The blade portion and the stirring member extend in a direction orthogonal or substantially orthogonal to the axial direction of the pickup roll,
The length of the blade part and the stirring member in the extending direction is 50% or more of the length of the paint containing pan in the direction perpendicular to the axial direction of the pickup roll. The paint stirrer in the roll coating equipment according to any one of claims 1 to 3, wherein the paint stirrer is used. The stirring member is disposed below the blade part,
The distance between the liquid level of the paint contained in the paint containing pan and the blade portion is 70% or more of the depth of the paint contained in the paint containing pan. The paint stirring apparatus in the roll coating equipment according to any one of claims 1 to 4.

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