KR102341034B1 - Injection nozzle for supplying coating liquid - Google Patents

Abstract

The present invention discloses a spray nozzle for supplying a coating solution. According to the present invention, a gap plate member for controlling the spray width of the coating solution is selectively formed between the two die blocks facing each other at both ends and in the center, and accordingly, the coating solution sprayed into the gap between the two die blocks is sprayed with the same pressure. When the coating liquid is ejected, it is possible to apply a liquid film of a certain thickness, as well as to apply a wide or divided two coating films.

Description

Spray nozzle for supplying coating solution {INJECTION NOZZLE FOR SUPPLYING COATING LIQUID}

The present invention relates to a spray nozzle, and more particularly, to a spray nozzle for supplying a coating solution that can apply a wide or divided two coating films.

Coating refers to replacing the air on the substrate with a liquid coating liquid, and the coating process is a process of making a micro-unit or less liquid film by applying a coating liquid such as a polymer solution or suspension onto the substrate through a spray nozzle.

The coating process has a very wide industrial application range. For example, the coating process is used in all industries, including displays such as LCD/PDP, magnetic or optical disks, exposure, high-integration circuit boards, optical fibers, etc. It can be said to be a key field.

Recently, due to its importance, research in the field of coatings is being actively conducted. Optimization/stability research to produce thin and precise coating products while speeding up production, and development of new technologies that give coating functionality such as multi-layer films and simultaneous double-sided coating products , development of a coating solution with non-Newtonian properties to solve environmental problems, and theoretical and experimental studies to derive optimal process conditions.

Coating methods are slide coating, slot coating, dip coating, roll coating, spin coating, etc. depending on the structure and type of the coating object, coating solution, coating thickness, etc. , multi-layered coating, curtain coating, and the like, and currently slot coating is mainly used.

In the case of slot coating or curtain coating, an injection nozzle having a slot-type injection port is used, and the injection nozzle includes a coating liquid inlet and a first die block communicating therewith and having an exhaust slot space for dispersing the coating liquid, and the first die A slot-type injection port comprising a second die block coupled to the block, and maintaining a constant gap to spray the coating liquid dispersed and guided from the exhaust slot space from the coupling of the first and second die blocks to the outside to allow it to be formed.

However, in the injection nozzle having the slot-type injection port as described above, when the coating liquid is sprayed through the slot-type injection hole, the coating liquid is ejected into the spaced gap between the first and second die blocks when the coating liquid stays due to the void formed in the lower part. It is impossible to eject with this same pressure, and accordingly, as the side pressure increases when the coating liquid is ejected, it is inevitably difficult to apply a liquid film of a certain thickness, and in particular, the application of two coating films in which the sprayed coating liquid is wide or divided could not be made at all.

Registered Patent Publication No. 10-1325318 (Announcement date: 2013.11.08.) Registered Patent Publication No. 10-1357979 (date of publication 2014.02.05.) Registered Patent Publication No. 10-1357988 (date of publication 2014.02.05.) Registered Patent Publication No. 10-1393211 (date of publication 2014.05.08.)

The problem to be solved by the present invention is to selectively configure the gap plate members for controlling the spray width of the coating solution between the two die blocks facing each other at both ends and at the center, so that the coating solution sprayed into the spaced gap between the two die blocks is the same. An object of the present invention is to provide a spray nozzle for supplying a coating solution that enables the coating of a liquid film of a certain thickness to be applied when the coating liquid is ejected by jetting under pressure, as well as enabling the application of two coating films in a wide width or divided into two parts.

A spray nozzle for supplying a coating solution, which is a means of solving the problems of the present invention, includes: a lower body having a coating solution groove for dispersing a coating solution flowing in through a single or a plurality of coating solution inlet pipes; an upper body coupled to the lower body to form a coating liquid injection port having a predetermined gap; a pair of side blocking blocks coupled to both sides of the lower body and the upper body to block the open side of the coating liquid groove; Including, a central gap member for controlling the spray gap when the coating liquid flowing into the coating liquid groove is sprayed to the outside through the coating liquid injection port is coupled to the central side of the lower body, and the central gap member is provided on both sides of the lower body In addition, side gap members for controlling the spraying gap for the coating liquid are respectively coupled, and the coating liquid flowing into the coating liquid groove is on one side or lower portion of the side gap member while preventing the coating liquid flowing into the groove from staying in the direct lower part of the side gap member. It is characterized in that the pore generation prevention member is formed to form a barrier rib to prevent a pressure difference generated due to the void in the lower part of the coating liquid groove.

In addition, the coating solution inlet pipe may be formed in a single number at the center of the lower body.

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In addition, the void generation preventing member, having a cross-sectional shape of the coating liquid groove, is a thin wall plate that is bent and extended from one side of the side gap member.

In addition, the void generation preventing member, which has a cross-sectional shape of the coating liquid groove, is a block body having a predetermined thickness formed under the side gap member.

In addition, the central gap member or the side gap member is fastened to the upper surface of the lower body by a fastening member, and a head avoidance groove into which the head of the fastening member is inserted is formed in the upper body.

In addition, the coating liquid inlet pipe may be formed in plurality on both sides of the lower body.

In addition, a barrier wall portion is formed in the central gap member to form a partition wall so that the coating liquid groove is divided into two and the divided double coating liquid groove is used simultaneously or only one of them is selectively used.

In addition, the blocking wall portion is a thin wall plate that has a cross-sectional shape of the coating solution groove and is bent and extended from both sides of the central gap member to prevent a pressure difference generated due to a lower void of the coating solution groove.

In addition, the blocking wall portion has a cross-sectional shape of the coating liquid groove and is a block body having a predetermined thickness formed under the central gap member to prevent a pressure difference generated due to the lower void of the coating liquid groove.

In addition, an insertion groove for accommodating a portion of the blocking wall portion is formed in the center of the coating liquid groove.

In addition, the side gap member is to be formed with a long hole in the bolt coupling position to enable horizontal movement.

In addition, the control handle portion protruding to the outside from the lower body and the upper body is extended to the outside of the side gap member is formed.

In addition, in the contact surface of the side blocking block to which the side gap member is in contact, the side gap member is moved left and right in a state in which the lower and upper bodies are temporarily assembled to accommodate the side gap member to accommodate the side gap member so as to enable fine width adjustment. wealth is formed.

In addition, when the lower body is coupled to the upper body, at least one lateral alignment key and at least one longitudinal alignment block for guiding the lateral and longitudinal alignment according to the coupling are respectively formed, and the upper body is provided with the lateral An alignment key insertion groove into which the direction alignment key is inserted is formed.

In addition, when the side blocking block is coupled to both sides of the lower and upper body, a lateral alignment plate for guiding lateral alignment according to the coupling is coupled to the side blocking block.

In addition, when the central gap member or the side gap member is coupled to the lower body, an alignment jaw for guiding longitudinal alignment according to the coupling is formed.

As described above, the present invention selectively configures the gap plate members for controlling the spray width of the coating solution between the two die blocks facing each other at both ends and in the center, and through this, the coating solution sprayed into the spaced gap between the two die blocks is applied at the same pressure. It is possible to expect the effect of not only enabling the application of a liquid film of a certain thickness when the coating liquid is ejected by spraying it, but also applying two coating films in a wide width or divided into two parts.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a combined perspective view showing the structure of a spray nozzle having a single coating liquid inlet pipe in a first embodiment of the present invention.
2 is an exploded perspective view of a spray nozzle having a single coating liquid inlet pipe as viewed from the first direction in the first embodiment of the present invention.
3 is an exploded perspective view of a spray nozzle having a single coating liquid inlet pipe as viewed from a second direction opposite to the first direction according to the first embodiment of the present invention.
4 is a perspective view showing a structure of a first die block in which a center and side gap members are coupled according to a first embodiment of the present invention;
5 is a schematic cross-sectional side view of the disassembled injection nozzle having a single coating liquid inlet pipe in the first embodiment of the present invention.
6 is a schematic cross-sectional front view of the disassembled injection nozzle having a single coating liquid inlet pipe in the first embodiment of the present invention.
7 is an exploded perspective view of a spray nozzle having a plurality of coating liquid inlet pipes as viewed from a first direction in a second embodiment of the present invention.
8 is an exploded perspective view of a spray nozzle having a plurality of coating liquid inlet pipes as viewed from a second direction opposite to the first direction according to a second embodiment of the present invention.
9 is a schematic side cross-sectional view showing the structure of a spray nozzle having a plurality of coating liquid inlet pipes according to a second embodiment of the present invention.
10 is a perspective view showing the structure of the first die block to which the center and side gap members are coupled according to the second embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a combined perspective view showing the structure of a spray nozzle having a single coating solution inlet tube according to a first embodiment of the present invention, and FIG. 2 is a first embodiment of the present invention showing a spray nozzle having a single coating solution inlet tube. It is an exploded perspective view viewed from one direction, and FIG. 3 is an exploded perspective view of a spray nozzle having a single coating liquid inlet pipe as viewed from a second direction opposite to the first direction as a first embodiment of the present invention, and FIG. A perspective view showing the structure of the first die block in which the center and side gap members are combined as a first embodiment, and FIG. 5 is a side cross-sectional view of the disassembled injection nozzle having a single coating liquid inlet tube according to the first embodiment of the present invention. It is a schematic diagram, and FIG. 6 shows a schematic cross-sectional front view of the spray nozzle having a single coating liquid inlet pipe in the first embodiment of the present invention.

1 to 6, the spray nozzle for supplying the coating solution according to the first embodiment of the present invention, the lower body 10, the upper body 20, the side blocking block 30, and the central gap member It may include (40), in addition to this, the side gap member 50 and the lateral alignment key 60 and the longitudinal alignment block 70, and may further include a lateral alignment plate (80) will be.

The lower body 10 has a coating liquid groove 12 for dispersing the coating liquid flowing in through the single central coating liquid inlet pipe 11 .

The upper body 20 is coupled to the upper side of the lower body 10 to form a coating liquid injection hole (not shown) of a predetermined gap.

The side blocking block 30 is a pair of structures coupled to both sides of the lower and upper bodies 10 and 20 to which the coupling is made to block the open side of the coating solution groove 12 .

The central gap member 40 is coupled through a fastening member (eg, screw) 100 on the central side of the lower body 10 , and the central gap member 40 flows into the coating liquid groove 12 . When the coating liquid to be used is sprayed to the outside through the coating liquid injection port, the injection gap is adjusted.

That is, the injection gap can be adjusted as much as the width of the central gap member 40 .

The side gap member 50 is coupled to both sides of the lower body 10 through the fastening member 100 , and together with the central gap member 40 , it is possible to adjust the spray gap for the coating solution.

Here, an alignment jaw 13 is formed on the lower body 10, and the alignment jaw 13 is a bell according to the coupling when the central gap member 40 and/or the side gap member 50 are coupled. It is configured to guide orientation alignment.

In addition, a head avoidance groove 22 may be formed in the upper body 20 , and the head avoidance groove 22 is the central gap member 40 or the side gap member 50 is the lower body 10 ), when fastening with the fastening member 100 to the upper surface, the head of the fastening member 100 can be retracted.

On the other hand, at one side or lower portion of the side gap member 50 , the coating solution flowing into the coating solution groove 12 is prevented from staying in the directly lower portion of the side gap member 50 , and the lower gap of the coating solution groove 12 . A gap generation preventing member 51 or 51 ′ that forms a barrier to prevent a pressure difference generated by this may be formed.

That is, the void generation preventing member 51 has a cross-sectional shape of the coating solution groove 12 and may be a thin wall plate that is bent and extended from one side of the side gap member 50, but the second embodiment of the present invention 7 to 10, the void generation prevention member 51 ′ has a cross-sectional shape of the coating solution groove 12, and has a predetermined thickness formed under the side gap member 50. A branch can be a block body.

The lateral alignment key 60 is formed in a single number at one end of the lower body 10, and is configured to guide the lateral alignment according to the coupling when the lower and upper bodies 10 and 20 are coupled.

The longitudinal alignment block 70 is formed at one end of the lower body 10, at least one or more, when the lower and upper body (10, 20) are combined, it can be configured to guide the lateral alignment according to the coupling. there will be

The lateral alignment plate 80 is coupled to the side blocking block 30, and when the side blocking block 30 is coupled to both sides of the lower and upper bodies 10 and 20, the lateral direction according to the coupling which may be configured to guide alignment.

As described above, in the spray nozzle for supplying the coating solution according to the first embodiment of the present invention, first, the coating solution flows through the coating solution inlet 11 formed in the center of the lower body 10, as shown in FIGS. 1 to 6 . When the coating solution is introduced, it fills the coating solution groove 12 .

At this time, the upper portion of the coating liquid groove 12 is closed by the upper body 20 coupled to the upper portion of the lower body 10, and the center of the lower body 10 to which the upper body 20 is coupled is located Since the central gap member 40 is coupled, as well as the side gap members 50 are coupled to both sides of the lower body 10, the coating solution flowing into the coating solution groove 12 is discharged to the outside through the coating solution injection port. At the time of spraying, the coating liquid injection hole is sprayed with the same pressure while the spraying gap is adjusted by the width of the central gap member 40 and/or the side gap member 50, and the coating liquid formed through the coating liquid spray hole is widely sprayed with the same pressure to have a certain thickness of liquid film application is possible.

Here, since a pore generation preventing member 51 or 51 ′ made of a thin wall plate or block is formed on one side or a lower portion of the side gap member 50 , the pore generation preventing member 51 or 51 ′ is the coating solution. This is to prevent the coating liquid flowing into the groove 12 from staying in the directly lower portion of the side gap member 50 , and this is to prevent a pressure difference caused by the lower void of the coating liquid groove 12 .

That is, when a void is formed in the lower portion of the side gap member 50 and the coating liquid stays in the void, the coating liquid ejected into the coating liquid injection port, which is a spaced gap between the lower and upper bodies 10 and 20, is ejected at the same pressure. In the first embodiment of the present invention as well as in the second embodiment of the present invention to be described later, the void generation prevention member as described above to prevent this problem, because the side pressure increases, making it difficult to apply a liquid film of a certain thickness. (51 or 51') is formed.

On the other hand, the accompanying FIGS. 7 to 10 are a second embodiment of the present invention, which divides the coating liquid grooves 12 and 12' into double, and thus the coating liquid inlet pipes 11 and 11' can be configured in plurality. is to make it

That is, in the second embodiment of the present invention, in a state in which a plurality of coating liquid inlet pipes 11 and 11 ′ are formed on both sides of the lower body 10 , the blocking wall part 41 is located in the center of the lower body 10 . It is intended to couple the central gap member 40 having a fastening member 100 .

That is, the barrier wall part 41 divides the coating liquid grooves 12 and 12' into a double, and the divided double coating liquid grooves 12 and 12' can be formed as a partition to use either one of them simultaneously or selectively. there will be

Here, when the coating liquid grooves 12 and 12' are used simultaneously, the coating liquid can be introduced from the plurality of coating liquid inlet pipes 11 and 11', and the coating liquid grooves 12 or 12' are selectively used. When used as a coating solution, the coating solution can be introduced into only one of the plurality of coating solution inlet pipes 11 or 11 ′.

At this time, although not shown in the drawing, the barrier wall part 41 has the cross-sectional shape of the coating solution grooves 12 and 12' like the void generation preventing member 51 formed in the side gap member 50, and the coating solution groove It may be a thin wall plate that is bent and extended from both sides of the central gap member 40 to prevent a pressure difference generated due to the lower gap of 12 and 12'.

On the other hand, the blocking wall portion 41 has a cross-sectional shape of the coating liquid grooves 12 and 12' and the central gap member ( 40) may be a block having a certain thickness formed in the lower portion, and accordingly, an insertion groove (not shown) for accommodating a part of the blocking wall portion 41 is formed in the center of the coating liquid grooves 12 and 12'. it will be possible

On the other hand, in the side gap member 50 applied in the third embodiment of the present invention, a long hole 52 is formed at the bolted position to enable horizontal movement, and the side gap member 50 is outside the lower portion. And the control handle part 53 protruding outward from the upper body (10, 20) may be formed to extend.

And, on the contact surface of the side blocking block 30 to which the side gap member 50 is in contact, the lower and upper bodies 10 and 20 are temporarily assembled by moving the side gap member 50 left and right to have a fine width A accommodating step 31 for accommodating the side gap member 50 may be formed so as to be adjustable.

Here, the reason for forming the accommodating stepped portion 31 is that, in a state in which the lower and upper bodies 10 and 20 are temporarily assembled without being fully assembled through fastening bolts, the side gap member 50 is left or right After moving in the direction to make a fine width adjustment, the lower and upper bodies 10 and 20 are sufficiently tightened with fastening bolts, etc., and the central gap member 40 fixed to the center of the lower body 10 This is in order to effectively set the spray width of the coating liquid based on .

In addition, if the adjustment handle 53 is extended to the side gap member 50, even if the lateral alignment plate 80 used in the first embodiment of the present invention is not used, the lateral alignment key ( 60) and the longitudinal alignment block 70 alone can stably align and couple the lower and upper bodies 10 and 20, as well as the side gap member 50 between the lower and upper bodies 10 and 20. ), the assembly position can be set stably.

Although the technical idea of the spray nozzle for supplying the coating liquid of the present invention has been described above with the accompanying drawings, the most preferred embodiment of the present invention is exemplarily described and does not limit the present invention.

Therefore, the present invention is not limited to the specific embodiments described above, and without departing from the gist of the present invention as claimed in the claims, anyone with ordinary skill in the art to which the invention pertains can implement various modifications. Of course, such modifications are intended to be within the scope of the claims.

10; lower body 11,11'; Coating solution inlet pipe
12, 12'; coating liquid groove 13; alignment jaw
20; upper body 21; Alignment key insertion groove
22; head avoidance groove 30; side block
31; accommodating step 40; center gap member
41; barrier wall 50; side gap member
51,51'; void generation prevention member 52; long shot
53; adjustment knob 60; horizontal alignment key
70; longitudinal alignment block 80; transverse alignment plate
100; fastening member

Claims (18)

a lower body having a coating liquid groove for dispersing the coating liquid flowing in through a single or a plurality of coating liquid inlet pipes; an upper body coupled to the lower body to form a coating liquid injection port having a predetermined gap; a pair of side blocking blocks coupled to both sides of the lower body and the upper body to block the open side of the coating liquid groove; including,
A central gap member for controlling the spray gap when the coating liquid flowing into the coating liquid groove is sprayed to the outside through the coating liquid injection port is coupled to the central side of the lower body,
On both sides of the lower body, side gap members for controlling the spray gap for the coating liquid are coupled together with the central gap member, respectively,
At one side or lower portion of the side gap member, a barrier rib is formed to prevent the coating liquid flowing into the coating liquid groove from remaining directly below the side gap member and to prevent a pressure difference caused by the lower gap of the coating liquid groove. A spray nozzle for supplying a coating solution, characterized in that it forms a generation preventing member. The method of claim 1,
The coating liquid inlet pipe is a spray nozzle for supplying a coating liquid, characterized in that formed in a single number in the center of the lower body. The method of claim 1,
The coating liquid inlet pipe is a spray nozzle for supplying a coating liquid, characterized in that formed in plurality on both sides of the lower body. delete delete The method of claim 1,
The void generation preventing member is a spray nozzle for supplying a coating solution, characterized in that it is a thin wall plate that has a cross-sectional shape of the coating solution groove and is bent and extended from one side of the side gap member. The method of claim 1,
The void generation preventing member, which has a cross-sectional shape of the coating solution groove, is a spray nozzle for supplying a coating solution, characterized in that it is a block body having a predetermined thickness formed under the side gap member. The method of claim 1,
The central gap member or the side gap member is fastened to the upper surface of the lower body by a fastening member, and a head avoidance groove into which the head of the fastening member is inserted is formed in the upper body. . 4. The method of claim 3,
A spray nozzle for supplying a coating solution, characterized in that, in the central gap member, a barrier wall portion forming a partition wall is formed so that the divided coating solution grooves are used simultaneously or only one of the divided coating solution grooves is doubled. 10. The method of claim 9,
The barrier wall portion is a thin wall plate that has a cross-sectional shape of the coating solution groove and is bent and extended from both sides of the central gap member to prevent a pressure difference generated due to the lower void of the coating solution groove. Nozzle. 10. The method of claim 9,
The barrier wall portion has a cross-sectional shape of the coating solution groove and is a block body having a certain thickness formed under the central gap member to prevent a pressure difference generated due to a lower void of the coating solution groove. spray nozzle. 10. The method of claim 9,
A spray nozzle for supplying a coating solution, characterized in that an insertion groove for accommodating a portion of the blocking wall portion is formed in the center of the coating solution groove. The method of claim 1,
The side gap member is a spray nozzle for supplying a coating solution, characterized in that forming a long hole at the bolted position to enable horizontal movement. 14. The method of claim 13,
The spray nozzle for supplying a coating solution, characterized in that extending to the outside of the side gap member, the adjustment handle protruding from the lower body and the upper body to the outside. 15. The method of claim 14,
A receiving step portion for accommodating the side gap member is formed on the contact surface of the side blocking block to which the side gap member is in contact so that the side gap member can be adjusted in a fine width by moving the side gap member left and right in a state in which the lower and upper bodies are temporarily assembled. A spray nozzle for supplying a coating solution, characterized in that. The method of claim 1,
When the lower body is coupled to the upper body, a lateral alignment key and at least one longitudinal alignment block for guiding lateral and longitudinal alignment according to the coupling are respectively formed,
A spray nozzle for supplying a coating solution, characterized in that the upper body forms an alignment key insertion groove into which the horizontal alignment key is inserted. The method of claim 1,
A spray nozzle for supplying a coating solution, characterized in that a lateral alignment plate guiding lateral alignment according to the coupling of the side blocking block to both sides of the lower and upper body is coupled to the side blocking block. The method of claim 1,
In the lower body, when the central gap member or the side gap member is coupled, an alignment jaw for guiding longitudinal alignment according to the coupling is formed.

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