KR101544358B1

KR101544358B1 - A continuous coating apparatus of a glass

Info

Publication number: KR101544358B1
Application number: KR1020150084771A
Authority: KR
Inventors: 박평수; 박재성; 서성유
Original assignee: 주식회사 지앤윈; 주식회사 한화건설; 서성유
Priority date: 2015-06-16
Filing date: 2015-06-16
Publication date: 2015-08-13

Abstract

The present invention provides an apparatus for continuously coating glass, which forms a coating layer by applying a selected coating agent on the surface of one side of the glass, provides a desired function, resulted from the coating layer, removes the coating agent attached on the surface of the other side easily when the coating agent is applied, and thus enhances quality of the glass. The apparatus includes: a transferring means having a plurality of rollers which receive power from the outside and rotate in the same direction; an applying means having a slot die which is arranged in a transferring space allowing the glass to be transferred there through by the transferring means and applies the coating solution on the surface of an upper side of the glass; and additionally a suction means having a suction nozzle which sucks the coating solution to have been attached or to be attached on a lower side of the glass under the glass transferred in the lower direction of the slot die constituting the applying means.

Description

[0001] The present invention relates to a continuous coating apparatus of a glass,

[0001] The present invention relates to a continuous coating apparatus for a glass in which a coating layer is continuously formed on the surface of a glass made of a plate, and more particularly, The present invention relates to a continuous coating apparatus for a glass which is capable of improving quality by easily removing a coating agent to be adhered to or adhered to the other side surface of a coating agent when the coating agent is applied.

In general, the surface of the glass is coated with a coating material adapted to realize additional functions such as free color selection and ultraviolet shielding.

One such glass having a coating layer on its surface is Korean Patent Registration No. 10-1382038 (name: a method for manufacturing a glass panel for home appliances using a UV curing adhesive system and a glass panel for household appliances) An ultraviolet ray hardening resin is coated on the surface of a glass panel made of glass and cured by irradiation with ultraviolet rays to form a coating layer.

The coating layer of the glass panel is applied on a roller or a conveyer rotating in one direction by a spray nozzle for spraying the coating liquid.

On the other hand, there are indirect coating methods and direct coating methods for coating the surface of glass, and the indirect coating method is a method of coating a film having a desired function on a film and attaching the film to glass.

The direct coating method is a method in which the coating liquid is applied to the surface of the glass, and there are a dry method and a wet method. The dry method is carried out in a vacuum state, and the physical method (PVD) CVD).

The wet method includes a spray method and a slot die method according to the spraying method of the coating liquid, and the spraying method is a method of spraying the coating liquid onto the surface of the glass through the spray nozzle.

In addition, the slot die method has the advantage that the viscosity of the coating solution can be up-coated because there is no exposure of the coating solution in air to a slot die through which the coating solution is discharged from a tank containing the coating solution.

In addition, since the coating is carried out using a pulsating pump, the coating can be applied in a certain amount and is excellent in appearance after coating, and is mainly applied to optical applications.

As described above, the slot die method has advantages of excellent stability and reproducibility of the coating and multi-laser coating.

However, in the slot die method of forming a coating layer on the conventional glass surface as described above, when the coating liquid is contaminated on the other surface on which the coating layer is formed, there is a problem that the production efficiency is lowered due to the removal of the contamination source.

In addition, there is a problem that the surface of the glass of the lane sequentially injected is continuously contaminated.

That is, as the coating liquid comes into contact with the surface of the roller in a state of being contaminated with the other surface of the glass, the roller is contaminated by the coating liquid, and the surface of the glass continuously injected by the contaminated roller is repeatedly contaminated, Is continuously generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art. It is an object of the present invention to provide a method for coating a glass substrate, The present invention also provides a continuous coating apparatus for a glass which can improve the quality by preventing the occurrence of defects by easily removing the coating agent to be adhered or adhered to the other side surface when coating the coating agent.

According to another aspect of the present invention, there is provided a continuous coating apparatus for a glass, including: a conveying unit having a plurality of rollers rotatable in the same direction with power received from the outside; And an application means having a slot die disposed in the transfer space and applying a coating liquid to an upper surface of the glass, the apparatus comprising: And suction means having a suction nozzle for sucking a coating liquid adhered to or adhered to a bottom surface of the glass at a lower position of the glass to be transported in a downward direction of the slot die constituting the application means.

A back pressure member is provided at a portion where the coating liquid is discharged from the lacquer die of the coating means to form a back pressure with respect to the discharge pressure in the glass direction of the coating liquid.

The transfer space of the transfer unit is provided with an optical sensor for sensing the thickness of the coating layer coated on the surface of the glass.

And control means for calculating and receiving the thickness of the coating layer sensed by the optical sensor and controlling the discharge pressure of the coating liquid discharged through the slot die and the suction pressure of the suction means.

In the continuous coating apparatus for a glass according to the present invention as described above, a coating layer is formed by applying a coating agent selected through the slot die to one surface of a glass continuously injected through the conveying unit to impart a desired function, It is possible to prevent the occurrence of defects and to improve the quality by easily removing the coating agent which is adhered to the surface on which the coating layer is not formed through the suction means and to be soiled.

1 is a schematic view showing a continuous coating apparatus for a glass according to an embodiment of the present invention;
Fig. 2 and Fig. 3 are schematic views showing the use state of the continuous glass coating apparatus according to the present embodiment. Fig.
4 is a schematic view showing a coating means applied to a continuous coating apparatus for glass according to the present embodiment.
Fig. 5 is a schematic view showing a usage state of the suction means applied to the continuous glass coating apparatus according to the present embodiment. Fig.
6 is a schematic view showing an enlarged view of a part of a suction nozzle constituting suction means applied to a continuous coating apparatus for glass according to the present embodiment.
7 is a schematic view showing a control state of a continuous glass coating apparatus according to the present embodiment.

Hereinafter, a continuous glass coating apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 to 8 show a continuous coating apparatus for a glass according to an embodiment of the present invention. The continuous coating apparatus 1 for a glass according to the present embodiment includes a body 21, A plurality of rollers 23 that are rotatably fixed to the body 21 and receive the power generated by the feed motor 22 and rotate in the same direction, And a slot die (31) disposed in a transfer space through which the glass (G) is transferred through the transfer means (2) and for applying the coating liquid to the upper surface of the glass (G) (3).

That is, the process of applying the coating liquid to the upper surface of the glass G, which is disposed on the upper side of the rollers 23 and continuously transported through the slot die 31, Thereby forming a coating layer.

Accordingly, the function of the coating layer is realized in the glass (G) and is suitably applied and advantageously used.

It is preferable that the transfer space of the transfer means 2 is provided with an optical sensor 41 for sensing the thickness of the coating layer coated on the surface of the glass G. [

It is further preferable to have a control means 4 for receiving and controlling the thickness of the coating layer sensed by the optical sensor 41 and controlling the discharge pressure of the coating liquid discharged through the slot die 31 .

In the continuous coating apparatus for glass 1 according to the present embodiment, the application means 3 includes a storage tank 32 in which a coating liquid is stored, a storage tank 32 for storing and receiving the coating liquid stored in the storage tank 32, A slot die 31 having a discharge port for discharging to the surface of the glass G and a delivery pump 33 for delivering the coating liquid stored in the storage tank 32 to the slot die 31.

That is, the coating liquid stored in the storage tank 32 is supplied to the slot die 31 through the delivery pump 33 and discharged onto the surface of the glass G to be coated with the coating liquid.

It is preferable that a pressure regulating member 34 is provided between the feed pump 33 and the slot die 31 to adjust the discharge pressure of the coating liquid.

That is, the thickness of the coating layer coated on the surface of the glass (G) is sensed through the optical sensor 41, and the thickness of the coating layer is calculated through the control means (4) Thereby adjusting the member 34.

The pressure regulating member 34 preferably includes a regulator and a check valve adapted to regulate the amount of the coating liquid supplied to the slot die 31 at a constant pressure.

A back pressure member 35 is provided at a position where the coating liquid is discharged from the slot die 31 of the application means 3 so as to form a back pressure with respect to the discharge pressure in the direction of the glass G of the coating liquid .

That is, after the coating liquid is applied to the surface of one glass G, the coating liquid is prevented from falling through the discharge port of the slot die 31 before the lane glass G is transported to the coating position The back pressure member 35 applies a back pressure to the coating liquid.

Thus, the coating solution is prevented from being infinitely discharged.

The back pressure member 35 is preferably composed of a back pressure pump connected to the slot die 31 and sucking the coating liquid to form a back pressure. The back pressure pump is controlled through the control means 4, .

The continuous coating apparatus 1 according to this embodiment of the present invention has a structure in which the glass (G) that is transported in the downward direction of the slot die 31 constituting the application means 3, G) having suction nozzles (51) for sucking the coating liquid adhered to the bottom surface thereof.

Accordingly, the coating agent adhering to the surface on which the coating layer is not formed is easily removed, thereby preventing the occurrence of defects and improving the quality.

The suction means 5 includes a vacuum pump 52 connected to the suction nozzle 51 for generating a suction pressure and a recovery tank 53 for recovering the coating liquid sucked by the vacuum pump 52 .

That is, a vacuum suction force is generated in the suction nozzle 51 through the vacuum suction force of the vacuum pump 52, and the lower surface of the glass G to be delivered is vacuumed to suck and remove the contamination source.

The suction nozzles 51 have a pair of suction ends 511 provided at intervals in the traveling direction of the glass G and between the suction ends 511, And a roller 23 for supporting and conveying the lower portion is disposed.

Accordingly, the polluted source on the lower surface of the glass (G) is sucked and removed at a plurality of locations, respectively, thereby improving the removal efficiency of the pollutant source.

In this case, the end of the suction end 511 is formed of an inclined surface inclined inward, and the suction force by the vacuum suction force is realized in the form of gathering from the outside to the center with respect to the center of the suction end 511, It is most desirable to be able to do so.

Hereinafter, the operation and effect of the continuous glass coating apparatus according to the present embodiment will be described in detail.

When the surface of the glass (G) is to be coated by using the continuous glass coating apparatus (1) according to the present embodiment, the surface to be coated is positioned on the roller (23) The roller 23 is transferred to the lower portion of the slot die 31 by the rotation of the feed motor 22.

When the glass G enters the discharge port of the slot die 31, the coating liquid is discharged from the storage tank by the discharge pump 33 and the pressure regulating member 34, which are controlled by the control means 4, Is supplied to the slot die and discharged to the surface of the glass (G) through the discharge port to be applied.

The vacuum pump 52 driven and controlled by the control means 4 is operated when the coating liquid flows out to the lower side through the side of the most front end of the glass G and contaminates the lower surface of the glass G. In this case, The suction nozzle 51 is attached to the lower surface of the glass G or vacuum-sucked the coating liquid to be adhered to the lower surface of the glass G through the vacuum pressure of the suction nozzle 51 to the recovery tank 53.

Thus, the upper surface of the glass G is coated while smoothly removing contaminants from the lower surface of the glass G. [

The upper surface is coated with the slot die 31, and the glass substrate G is adhered to the lower surface of the glass substrate 1, The contamination source is continuously repeatedly removed through the suction means 5 and the gap between the glass G and the glass G is controlled through the control means 4 when the slot die 31 is positioned The back pressure member 35 is driven to form a back pressure on the slot die 31 to prevent the coating liquid from being discharged unauthorizedly.

As described above, the glass continuous coating apparatus 1 according to the present embodiment is a system in which a coating agent selected through a slot die 31 is applied to one surface of a glass G continuously injected through the transfer means 2 The coating layer is formed and adhered to the surface on which the coating layer is not formed through the suction means 5 to easily remove the coating agent which is soiled.

It will be apparent to those skilled in the art that various modifications and variations may be made in the present invention without departing from the spirit or scope of the invention. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: coating apparatus 2: conveying means
21: Body 22: Feed motor
23: roller 3: application means
31: Slot die 32: Storage tank
33: delivery pump 34: pressure regulating member
35: back pressure member 4: control means
41: optical sensor 5: suction means
51: Suction nozzle 511: Suction nozzle
52: vacuum pump 53: recovery tank

Claims

A transfer means for transferring the glass through the transfer means and having a slot die for applying a coating liquid to an upper surface of the glass; A continuous coating apparatus for a glass, comprising:
At the lower position of the glass being transported in the downward direction of the slot die constituting the application means,
Further comprising suction means having a suction nozzle for sucking a coating liquid adhered to or adhered to a bottom surface of the glass.

The method of claim 1, further comprising:
At a portion where the coating liquid is discharged from the lacquer die of the application means,
Characterized in that a back pressure member is provided which is adapted to form a back pressure with respect to the discharge pressure in the glass direction of the coating liquid.

The method of claim 1, further comprising:
In the transfer space of the transfer unit,
Characterized in that a light sensor is provided to sense the thickness of the coating layer coated on the surface of the glass.

4. The method of claim 3, further comprising:
And control means for controlling the thickness of the coating layer sensed by the optical sensor to control the discharge pressure of the coating liquid discharged through the slot die and the suction pressure of the suction means. Coating apparatus.