JP2001276694A - Roller type coating method and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller type coating method and the device capable of uniformly applying a coating material by following in the unevenness of a surface. SOLUTION: The roller type coating method is performed by dropping the coating material on a coating metallic roller from a nozzle freely reciprocally movable in a direction crossing the transferring direction of an intermittently transferred plate like article at a right angle, impregnating a coating felt roller arranged direct thereunder with the coating material, formed film like on the coating metallic roller and flowing down, and pressing the coating felt roller on the uneven surface of the plate like material and its device is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller-type coating method and an apparatus for applying a coating material to an uneven surface of a plate-like article such as a foam insulation board which is conveyed intermittently.

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, JP-A-63-36874, when a paint is applied to an uneven surface of a plate-like article, flexibility such as a sponge roller or a rubber roller is applied. It is known to use rollers having Also, a method of spraying and applying by spraying is generally well known.

[0003]

However, even a flexible roller such as a sponge roller or a rubber roller cannot completely follow the unevenness of the application surface, and the coating amount does not increase or decrease. Since it is impossible, it is difficult to apply the paint uniformly. Also, in the case of applying by a spraying method, since the paint is scattered around, there is a problem of large loss and a problem of environmental pollution. Moreover, in order to spray a small amount stably, it is necessary to dilute with water, causing a problem that the drying load increases,
There is also a problem that nozzle clogging occurs due to solidification of the paint.
Therefore, an object of the present invention is to provide a roller-type coating method and apparatus that can uniformly apply a paint by following irregularities on the surface.

[0004]

In order to achieve the above object, the present invention first provides the following roller-type coating method. That is, in a method of applying paint to an uneven surface of a plate-like article that is intermittently conveyed, a metal roller for coating the paint with a nozzle that can reciprocate in a direction orthogonal to the conveyance direction of the plate-like article. The coating felt roller disposed immediately below is impregnated with the coating material flowing down in the form of a film on the coating metal roller, and the coating felt roller is placed on the surface of the plate-like article. And applying a coating by pressing the coating.

[0005] The following roller type coating apparatus is provided. That is, in an apparatus for applying a paint to the uneven surface of a plate-shaped article that is intermittently transferred, a paint dropping nozzle configured to be reciprocally movable in a direction orthogonal to the transfer direction of the plate-shaped article, A coating metal roller that drops the paint dropped from the nozzle into a film form, a coating felt roller that impregnates the paint that has flowed down from the coating metal roller, and a coating roller that is coated with the coating felt roller. A roller-type coating apparatus, comprising: a receiving metal roller that supports the plate-shaped article from below when applying. A doctor blade is provided for the coating metal roller. In addition, while providing an ironing metal roller for ironing and washing the paint impregnated in the coating felt roller, the ironing metal roller and the receiving metal roller are parallel to the transport direction of the plate-like article. The coating metal roller and the coating felt roller are configured to be movable in substantially the vertical direction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on examples shown in the drawings. FIG. 1 is an overall schematic side view of a roller-type coating apparatus according to the present invention, FIG. 2 is a schematic front view of the main parts, and FIG. 3 is a schematic plan view of the main parts. FIG. 4 is a schematic explanatory view at the time of coating, and FIG. 5 is a schematic explanatory view at the time of cleaning. In the present invention, a plate-shaped article such as a foam insulation board to which a paint is applied (hereinafter, referred to as
(S) is, for example, 7 to 65 m thick
m, with a height difference of 1 mm on the surface (coated surface)
The above unevenness is formed.

As shown in FIGS. 1 and 2, (16) is a pair of support arms rotatably supported by a support shaft (15).
Between the opposing support arms (16), a coating metal roller (1) and a coating felt roller (2) are vertically suspended with a very small gap. In addition, the support arm (1
6) The tip of the piston rod (18a) of the cylinder (18) is pivotally mounted in the middle of the cylinder (1).
The support arm (16) is configured to rotate around the support shaft (15) by the expansion and contraction operation of the piston rod (18a) of 8), and the coating metal roller (1) and the coating felt roller ( 2) moves up and down integrally in a substantially vertical direction.

Further, (5) and (6) are nip rollers which press and convey the conveyed foam sheet (S) from above and below, and the upper nip roller (5) has a pair of opposing rotating arms ( 17). The rotating arm (17) is connected to the support arm (1) described above.
Similarly to 6), it is rotatably supported on a support shaft (15), and a cylinder (19) is provided in the middle of the rotation arm (17).
Of the piston rod (19a) is pivotally mounted. Therefore, the rotation arm (17) rotates around the support shaft (15) by the expansion and contraction operation of the piston rod (19a) of the cylinder (19), and the nip roller (5) is moved up and down substantially. It moves up and down in the direction.

Thus, the coating metal roller (1),
Felt roller for coating (2), nip roller (5)
Is movable up and down, it is possible to quickly respond to changes in the thickness of the foamed sheet (S). The coating metal roller (1), the coating felt roller (2), and the nip roller (5) are clockwise in FIG. 1, and the nip roller (6) is also counterclockwise in FIG. Is driven to rotate.
In the vicinity of the coating metal roller (1), on the upstream side of the transport path of the foamed sheet (S), the coating metal roller (1)
A doctor blade (7) for adjusting the supply amount of the paint flowing down is provided. The doctor blade (7) has a base portion rotatably pivoted between the support arms (16), and has a tip facing a peripheral surface of the coating metal roller (1) with a predetermined gap. Metal roller (1)
It is configured to be able to adjust and fix the gap between the two.

A nozzle (8) is disposed right above the coating metal roller (1) and drops the coating material onto the coating metal roller (1). )
As shown in FIGS. 1 to 3, a plurality of plates are provided at predetermined intervals on a plate (9) that is erected in a direction (hereinafter, referred to as a width direction) orthogonal to the conveying direction of the foamed sheet (S). I have. The plate (9) is configured to be reciprocally movable in the width direction of the foam sheet (S) by a link mechanism. As shown in FIGS. 2 and 3, for example, the link mechanism fixes the base end of the rotating arm (12) to a rotating shaft (11) rotated by driving means such as a motor (10), and the rotating arm (12). One end of a link arm (13) is pivotally connected to the tip of the plate, and the other end of the link arm (13) is pivotally connected to one end of a plate (9). Accordingly, the plate (9) is configured to reciprocate along the LM guide (14). According to such a configuration, the structure is simple, the paint can be dripped almost uniformly in the roller axis direction of the coating metal roller (1), and the coating material is applied on the coating metal roller (1). It can be formed into a film. Then, by changing the supply amount of the paint to be dropped, the amount of the paint attached to the foamed sheet (S) can be increased or decreased.

A metal roller (3) is provided below the conveying path of the foamed sheet (S) and supports the conveyed foamed sheet (S) from below, and (4) is a metal roller for receiving. It is a metal roller for ironing that is disposed downstream of the metal roller (3) in the conveying path, is in contact with the felt roller for coating (2) at the time of washing, and scrapes off the paint impregnated therein. As shown in FIGS. 4 and 5, the receiving metal roller (3) and the ironing metal roller (4) are mounted on a pair of opposing support plates (21). Is slightly lowered, and the receiving metal roller (3) is rotationally driven in the illustrated counterclockwise direction by drive means (not shown). The support plate (21) is attached to the tip of the piston rod (20a) of the cylinder (20), and foams along the LM guide (22) by the expansion and contraction of the piston rod (20a) of the cylinder (20). It is slidable in the longitudinal direction of the sheet (S), that is, in the direction parallel to the transport direction of the foam sheet (S).

As described above, the receiving metal roller (3) and the ironing roller (4) are configured to be integrally movable, and the ironing metal roller (4) is more movable than the receiving metal roller (3). If it is located slightly lower,
Switching between coating and standby / washing can be performed quickly, and work efficiency can be improved. Reference numeral (24) denotes a tray for receiving excess paint dripping from the ironing metal roller (4) during cleaning. Reference numeral (23) denotes a stopper with which the tip of the support arm (16) comes into contact, and the height of the protrusion can be adjusted in two stages, that is, at the time of coating and at the time of standby and cleaning. That is, it rises to a predetermined position at the time of coating and adjusts the crushing allowance of the felt roller (2) with respect to the foamed sheet (S), and falls to a predetermined position so as to be in contact with the ironing metal roller (4) during standby and washing. It has become.

The coating apparatus according to the present invention has the above-described configuration. Next, a series of operations will be described. First, when the foamed sheet (S) is conveyed by a conveying means (not shown), the nip rollers (5) and (6)
The foamed sheet (S) is further conveyed while being pressed from above and below by the nip rollers (5) and (6). On the other hand, as shown in FIG. 4, the paint is dropped from the paint dropping nozzle (8) to the coating metal roller (1).
Since the nozzle (8) drops by reciprocating in the width direction of the foam sheet (S) by the link mechanism, the dropped paint is applied on the coating metal roller (1) in the width direction of the foam sheet (S). The coating material in the form of a film is supplied almost uniformly in the axial direction of the coating felt roller (2) disposed immediately below the coating material. At this time, the supply amount of the paint is adjusted by the doctor blade (7).

After the coating felt roller (2) is impregnated with the coating material, the coating material is applied to the foamed sheet (S). At this time, the receiving metal roller (3) shortens the cylinder (20). Since the foamed sheet (S) is located just below the coating felt roller (2) by the operation, the foamed sheet (S) is suitably pressed at a predetermined pressure by the coating felt roller (2), and the support arm (16) By contacting the tip with the stopper (23), the crushing allowance of the coating felt roller (2) is adjusted, and the paint is applied evenly while following the unevenness of the surface of the foamed sheet (S). When the thickness of the foamed sheet (S) conveyed changes, the rotating arm (17) on which the nip roller (5) is suspended, the coating metal roller (1) and the coating felt. The support arms (16) on which the rollers (2) are mounted are each mounted on a cylinder (1).
8) The operation is performed by rotating the support shaft (15) substantially vertically in the center by the operation of (19).

On the other hand, when cleaning the coating felt roller (2), the cylinder (20) is extended and operated.
The ironing metal roller (4) is moved directly below the coating felt roller (2), and the stopper (23) is lowered to make an interview between the coating felt roller (2) and the ironing metal roller (4). . And as shown in FIG.
Excess paint impregnated in the felt roller for coating (2) is squeezed with a metal roller for ironing (4), and excess paint dripping from the metal roller for ironing (4) is received in a tray (24). When the washing is completed, the cylinder (20) is shortened again to position the receiving metal roller (3) immediately below the coating felt roller (2), and the foam sheet (S) intermittently conveyed. Apply paint to.

[0016]

As described above, according to the present invention, the paint is dropped onto the coating metal roller by the nozzle which can reciprocate in the direction orthogonal to the direction of transport of the intermittently transported plate-like article. Then, the paint flowing down in the form of a film on the coating metal roller is impregnated into the coating felt roller disposed immediately below, and the coating felt roller is pressed against the surface of the plate-like article. Since the paint is applied by coating, even if the surface has irregularities, it is possible to sufficiently cope with it, and even a small amount of paint can be applied almost uniformly, and the coating unevenness is small. Moreover, since the paint does not scatter,
No countermeasures are required, and there is no dripping of the intermittent feed of the plate-like article, so there is no loss of paint and the coating efficiency is higher than that of the spray type.

Further, since the doctor blade is provided for the coating metal roller, the supply amount of the paint can be adjusted, and by changing the supply amount of the paint, the adhesion amount of the paint to the plate-like article can be adjusted. Can be increased or decreased. And, while providing a squeezing metal roller to squeeze and wash the paint impregnated in the coating felt roller, the squeezing metal roller and a receiving metal roller that supports the plate-shaped article from below during coating are provided. Since it is configured to be movable in a direction parallel to the conveyance direction of the article, it is possible to quickly switch between standby / washing and coating operations, thereby improving work efficiency. Further, since the coating metal roller and the coating felt roller are configured to be movable substantially vertically, it is possible to promptly respond to changes in various thicknesses of the plate-like article.

[Brief description of the drawings]

FIG. 1 is an overall schematic side view of a roller type coating apparatus according to the present invention.

FIG. 2 is a schematic front view of a main part of the above.

FIG. 3 is a schematic plan view of a main part of the above.

FIG. 4 is a schematic explanatory view at the time of coating.

FIG. 5 is a schematic explanatory view at the time of cleaning.

[Explanation of symbols]

 S Foam sheet 1 Metal roller for coating 2 Felt roller for coating 3 Metal roller for receiving 4 Metal roller for ironing 5 Nip roller 6 Nip roller 7 Doctor blade 8 Nozzle 9 Plate 10 Motor 11 Rotating axis 12 Rotating arm 13 Link arm 14 LM guide 15 Support shaft 16 Support arm 17 Rotating arm 18 Cylinder 19 Cylinder 20 Cylinder 21 Support plate 22 LM guide 23 Stopper 24 Receiving tray

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Nobuo Miura, Inventor No. 4 Onahama-ji Nagisa 2-4, Iwaki-shi, Fukushima Asahi Kasei Kogyo Co., Ltd. CB36

Claims (5)

[Claims] 1. A method for applying a paint to an uneven surface of a plate-like article conveyed intermittently, wherein the paint is applied by a nozzle which is reciprocally movable in a direction orthogonal to a transfer direction of the plate-like article. Is dropped on a coating metal roller, and the coating material flowing down in the form of a film on the coating metal roller is impregnated into a coating felt roller disposed immediately below the coating metal roller. A roller-type coating method, wherein the coating is applied by pressing the surface of the plate-shaped article with a paint. 2. An apparatus for applying a paint to an uneven surface of a plate-like article conveyed intermittently, wherein the paint is reciprocally movable in a direction orthogonal to a transfer direction of the plate-like article. A dripping nozzle, a coating metal roller for coating the coating material dropped from the nozzle into a film, and a coating felt roller for impregnating the coating material flowing down from the coating metal roller; A roller type coating apparatus, comprising: a receiving metal roller for supporting the plate-like article from below when a paint is applied by a felt roller. 3. The roller-type coating apparatus according to claim 2, wherein a doctor blade is provided for the coating metal roller. 4. An ironing metal roller for ironing and washing the coating material impregnated in the coating felt roller, and transporting the plate-like article by the ironing metal roller and the receiving metal roller. The roller-type coating apparatus according to claim 2, wherein the apparatus is configured to be movable in a direction parallel to the direction. 5. The roller type coating apparatus according to claim 2, wherein the coating metal roller and the coating felt roller are configured to be movable substantially vertically.