TW202005719A - Equipment for cleaning coating nozzle - Google Patents

Abstract

This invention discloses an equipment for cleaning coating nozzle which removes coating liquid left on a tip end portion of an coating nozzle with a cleaning member after the coating liquid is discharged from a slit-shaped discharging opening provided on a tip end surface of the coating nozzle moving on an object to be coated to be coated on a surface of the object to be coated, wherein the equipment for cleaning coating nozzle is provide with cleaning scraping portions corresponding to the shape of the tip end portion of the coating nozzle on a first cleaning member and a second cleaning member provided at a predetermined intervals in the traveling direction of the coating nozzle, the first and second cleaning members are inclined in opposite directions toward the longitudinal direction of the tip end portion of the coating nozzle, and the first and second cleaning members are sequentially moved in opposite directions such that the cleaning scraping portions of the cleaning members are positioned along the tip end portion of the coating nozzle, so as to clean the tip end portion of the coating nozzle.

Description

Cleaning device for coating nozzle

，「日本註冊商標」，以下省略)所使用的塗布用管嘴當中，用來清掃設有吐出塗液用的狹縫狀吐出口的塗布用管嘴的前端部。尤其是，在使塗液從在被塗布體上方行進的塗布用管嘴的前端面所設置的狹縫狀吐出口吐出而將塗液塗布在被塗布體的表面之後，利用沿著塗布用管嘴的前端部移動的清掃構件將殘留在設有狹縫狀吐出口的塗布用管嘴的前端部的塗液去除來清掃塗布用管嘴的前端部的塗布用管嘴的清掃裝置當中，具有下列特點：在有從前述塗布用管嘴的前端部去除的一部分塗液附著於清掃構件，而進行了幾次利用清掃構件進行清掃而去除殘留在塗布用管嘴的前端部的塗液的操作的情況，可確實防止附著於清掃構件的塗液逐漸蓄積，且如此蓄積的塗液從清掃構件附著於塗布用管嘴的前端部而黏附在被塗布體或其周邊而發生塗工不良，尤其是，即使在使用黏度高的塗液的情況，也可避免附著並蓄積於清掃構件的塗液附著在塗布用管嘴的前端部而黏附在被塗布體或其周邊，可利用清掃構件穩定且充分地清掃塗布用管嘴的前端部。 The present invention relates to a cleaning device for a coating nozzle. The cleaning device for a coating nozzle is a desktop coating machine that coats various coating liquids on the surface of an object to be coated such as a glass plate (

, "Japanese registered trademark", hereinafter omitted) Of the coating nozzles used, the tip portion of the coating nozzle provided with a slit-shaped discharge port for discharging the coating liquid is cleaned. In particular, after the coating liquid is discharged from the slit-shaped discharge port provided on the front end surface of the coating nozzle that travels above the coating body to apply the coating liquid on the surface of the coating body, the coating tube is used The cleaning member that moves at the tip of the nozzle removes the coating liquid remaining at the tip of the coating nozzle provided with a slit-shaped discharge port to clean the coating nozzle of the coating nozzle, and includes The following features: a part of the coating liquid removed from the front end of the coating nozzle is attached to the cleaning member, and the cleaning member is cleaned several times to remove the coating liquid remaining on the front end of the coating nozzle In this case, it is possible to prevent the coating liquid adhering to the cleaning member from accumulating gradually, and the coating liquid accumulated in this way adheres to the front end of the coating nozzle from the cleaning member and adheres to the coating object or its periphery, resulting in poor coating work, especially Yes, even in the case of using a highly viscous coating liquid, it is possible to avoid the coating liquid adhering to and accumulating on the cleaning member from adhering to the tip of the coating nozzle and adhering to the object to be coated or its surroundings. Clean the tip of the coating nozzle sufficiently.

In the manufacture of plasma display panels, organic electroluminescence display panels, liquid crystal display panels, etc., desktop coating machines have been used in the past. In such desktop coating machines, the coating liquid discharged at the front end is used. A coating nozzle for a slit-shaped discharge port, and the coating nozzle is moved above the object to be coated as described above, and at the same time, the coating liquid is discharged from the slit-shaped discharge port provided at the front end portion of the coating nozzle Discharge to the surface of the object to be coated and apply the coating liquid to the surface of the object to be coated.

However, when the coating liquid is applied on the surface of the object to be coated in this manner, the coating liquid may partially remain in the discharge port or the peripheral portion of the tip of the coating nozzle.

Moreover, when the coating liquid is partially applied to the surface of the next object to be coated using the coating nozzle where the coating liquid partially remains, the coating liquid remaining on the front end portion of the coating nozzle may be applied to The subsequent coating liquid on the surface of the object to be coated has problems such as uneven coating unevenness.

Therefore, the following technique has been proposed in the past: after the coating liquid is applied to the surface of the object to be coated from the discharge port of the tip of the coating nozzle as described above, the coating nozzle is guided to the The cleaning device at the position where the body is separated, and as shown in Patent Documents 1 to 3, the cleaning member provided in the cleaning device is moved along the front end portion of the coating nozzle, and the cleaning member will be left at the front end of the coating nozzle Part of the coating liquid is scraped off from the tip of the coating nozzle and removed.

Here, as for the coating nozzle, generally, as shown in the aforementioned Patent Documents 1 to 3, both sides of an elongated front end surface among the front ends of the coating nozzle provided with slit-shaped discharge ports are used A V-shaped lip arch slope extending upwardly into a slope is provided, and a V-shape is formed at the tip portion. On the other hand, in the cleaning device for cleaning the front end portion of the coating nozzle, the cleaning member is a cleaning scraper provided with a substantially V-shaped cutout, which is related to Among the tip portions of the coating nozzle, the elongated front end surfaces and the inclined surfaces of the lip arches formed on both sides are formed in contact with each other to remove the coating liquid remaining in these parts.

In addition, Patent Document 1 discloses a combination of not only cleaning scrapers with substantially V-shaped cutouts but also V-shaped left and right inclined surfaces as other cleaning scrapers.

Moreover, in the past, the coating nozzle after applying the coating liquid on the surface of the object to be coated as described above was guided to the cleaning device, and the tip of the coating nozzle was inserted into the cleaning scraper of the cleaning member The notch etc. of the coating nozzle are brought into contact with the slender front end surface of the front end portion of the coating nozzle and the sloped surfaces of the lip arches formed on both sides of the V-shaped contact with the cleaning scraping portion of the cleaning member, and in this state The cleaning member is moved along the front end of the coating nozzle, and then the coating liquid remaining on the front end of the coating nozzle is removed from the front end of the coating nozzle by the cleaning member.

However, when the coating liquid remaining on the front end of the coating nozzle is removed from the front end of the coating nozzle as described above, the coating liquid removed from the front end of the coating nozzle adheres and remains in The aforementioned cleaning member, especially in the case of a high-viscosity coating liquid, the coating liquid adhering to the cleaning member will remain without dripping from the cleaning member, and the amount of coating liquid adhering to and remaining on the cleaning member will gradually increase, and so The coating liquid adhering to and remaining on the cleaning member will gradually solidify.

Next, the coating liquid that adheres to the cleaning member and gradually solidifies will adhere to the coating part or the coating part of the tip of the coating nozzle. When using the coating tube to which the coating liquid thus cured is attached When the nozzle applies a new coating liquid to the surface of the object to be coated, the cured coating liquid will become a foreign material and adhere to the coating part or outside the coating part, causing a problem of poor coating.

Here, the coating liquid that adheres to the cleaning member and solidifies like this adheres to the coating part or the coating part of the tip of the coating nozzle, and the coating liquid is applied using this coating nozzle When a foreign object adheres to or outside the coated part on the surface of the object to be coated, poor coating occurs, and the aforementioned Patent Documents 1 to 3 do not specifically disclose a solution to this situation.

[Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Unexamined Patent Publication No. 2008-149247

[Patent Document 2] Japanese Unexamined Patent Publication No. 2012-185404

[Patent Document 3] Japanese Patent Laid-Open No. 2011-167607

The object of the present invention is to solve the above-mentioned problem of the cleaning device for a coating nozzle, which is a tabletop coating machine that applies various coating liquids to the surface of an object to be coated such as a glass plate Among the coating nozzles used, the tip of the coating nozzle provided with a slit-shaped discharge port for discharging the coating liquid is cleaned.

Moreover, the problem in the cleaning device of the coating nozzle of the present invention is to move the coating nozzle relative to the object to be coated, and to spit out the coating liquid from the slit shape provided on the front end surface of the coating nozzle After the outlet is coated on the surface of the object to be coated, the coating nozzle is guided to a cleaning device, and the cleaning nozzle that moves along the front end of the coating nozzle will leave the coating nozzle provided with the slit-shaped discharge port When the coating liquid at the tip of the coating is removed to clean the tip of the coating nozzle, even if a part of the coating liquid removed from the tip of the coating nozzle adheres and accumulates on the cleaning member, and the coating liquid thus accumulated adheres from the cleaning member At the front end of the coating nozzle, the adhering coating liquid can also be appropriately removed from the front end of the coating nozzle by a cleaning member, so as to reliably prevent the occurrence of coating defects, especially even when using a coating solution with high viscosity, It is also possible to prevent the coating liquid adhering to and accumulating on the cleaning member from adhering to the front end of the coating nozzle and adhering to the object to be coated or its periphery, and the cleaning member can stably and sufficiently clean the front end of the coating nozzle.

In order to solve the above-mentioned problems, in the cleaning device for a coating nozzle of the present invention, a coating nozzle formed to be long in a direction crossing the direction of travel over the object to be coated is used in the coating A front end surface of the nozzle facing the object to be coated is provided with a slit-shaped discharge port for discharging the coating liquid along the longitudinal direction of the coating nozzle, and the coating nozzle is placed above the object to be coated After proceeding and discharging the coating liquid from the slit-shaped discharge port to apply the coating liquid to the surface of the object to be coated, the cleaning member that moves under the coating nozzle along the front end of the coating nozzle is removed The coating nozzle provided with a slit-shaped discharge nozzle cleans the front end of the coating nozzle with the coating liquid including the front end of the front end surface, wherein: the required distance is in the traveling direction of the coating nozzle The first cleaning member and the second cleaning member provided with a cleaning scraper corresponding to the shape of the tip of the coating nozzle are provided as the cleaning member, and the first cleaning member and the second cleaning member are provided From the lower side of the coating nozzle toward the front end of the coating nozzle and inclined in the opposite direction with respect to the longitudinal direction of the coating nozzle, the cleaning blade among the first cleaning member and the second cleaning member The removal section moves the first cleaning member and the second cleaning member sequentially in the opposite direction along the front end of the coating nozzle, so as to clean the front end of the coating nozzle, along the front end of the coating nozzle.

Moreover, as shown in the cleaning device for the coating nozzle of the present invention, the cleaning nozzle corresponding to the shape of the front end portion of the coating nozzle is provided so as to be separated by a required interval in the traveling direction of the coating nozzle The first cleaning member and the second cleaning member of the scraping section are used as the cleaning member, and the first cleaning member and the second cleaning member are directed from below the coating nozzle toward the front end of the coating nozzle and relative to the coating The longitudinal direction of the nozzle is inclined in the opposite direction, and the first cleaning member and the second cleaning member are cleaned so that the cleaning scraping portion of the first cleaning member and the second cleaning member is along the front end portion of the coating nozzle The members sequentially move in the opposite direction along the front end of the coating nozzle and clean the front end of the coating nozzle. At this time, even if a part of the coating liquid removed from the front end of the coating nozzle adheres and accumulates in One cleaning member, and the coating liquid accumulated in this way adheres to the front end portion of the coating nozzle from one cleaning member, and the attached coating liquid can also be appropriately removed from the front end portion of the coating nozzle by the other cleaning member.

Here, in the cleaning device for a coating nozzle of the present invention, the first cleaning member and the second cleaning member are in the longitudinal direction of the front end portion of the coating nozzle crossing the traveling direction of the coating nozzle When tilting in the reverse direction, it is preferable to direct the first cleaning member and the second cleaning member toward the moving direction when cleaning the front end of the coating nozzle from the lower side of the coating nozzle toward the front end of the coating nozzle tilt. In this way, even in the case of using a highly viscous coating liquid such as polyimide, the coating liquid remaining on the tip portion of the coating nozzle can be cleaned by the first cleaning which is inclined in the moving direction as described above The member or the second cleaning member is surely scraped downward, and the coating liquid remaining at the tip of the coating nozzle can be sufficiently removed.

Furthermore, in the cleaning device for a coating nozzle of the present invention, a first front end surface for cleaning the front end surface of the coating nozzle provided with a slit-shaped discharge port may be provided on the downstream side in the moving direction of the first cleaning member The cleaning member is provided with a second front end surface cleaning member for cleaning the front end surface of the coating nozzle provided with the slit-shaped discharge port on the downstream side in the moving direction of the second cleaning member. In this way, after the coating liquid is discharged from the slit-shaped discharge port provided at the front end surface of the coating nozzle that travels above the coated body to the surface of the coated body, after the coating liquid is applied to the surface of the coated body, The first front end surface cleaning member and the second front end surface cleaning member can be used for cleaning, and the coating liquid remaining on the front end surface of the coating nozzle provided with the slit-shaped discharge port can be surely removed. In addition, the case where the first front end surface cleaning member and the second front end surface cleaning member are provided is the same as the case of the first cleaning member and the second cleaning member described above, so that they respectively face the front end portion of the coating nozzle The direction of movement is preferably inclined.

In addition, in the cleaning device for a coating nozzle of the present invention, when a coating liquid having a low viscosity is used, the first cleaning member and the second cleaning member are respectively directed toward the moving direction when cleaning the front end portion of the coating nozzle The method of tilting in the opposite direction is also effective.

In addition, in the cleaning device for a coating nozzle of the present invention, when the front end portion of the coating nozzle is cleaned by the first cleaning member and the second cleaning member, the coating nozzle can be provided so as to be relatively to the first The cleaning member and the second cleaning member relatively move up and down, and guide the front end portion of the coating nozzle into the cleaning scraping portion among the first cleaning member, and use the first cleaning member to clean the coating nozzle Of the tip of the coating nozzle, the tip of the coating nozzle is guided into the cleaning scraper of the second cleaning member, and the tip of the coating nozzle is cleaned by the second cleaning member. In this case, in addition to raising and lowering and moving the coating nozzle, both the first cleaning member and the second cleaning member can be raised and lowered, but from the viewpoint of ease of operation, the coating nozzle is raised and lowered, Mobile is better.

In the cleaning device for a coating nozzle of the present invention, a cleaning scraper corresponding to the shape of the tip of the coating nozzle is provided so as to be spaced at a required interval in the traveling direction of the coating nozzle The first cleaning member and the second cleaning member are used as the cleaning member, and the first cleaning member and the second cleaning member are directed from below the coating nozzle toward the front end of the coating nozzle and relative to the coating nozzle The longitudinal direction is inclined in the opposite direction, and the first cleaning member and the second cleaning member are sequentially arranged such that the cleaning scraping portion of the first cleaning member and the second cleaning member is along the front end of the coating nozzle The tip of the coating nozzle moves in the opposite direction, and the first cleaning member and the second cleaning member clean the tip of the coating nozzle. Therefore, even if there is a part removed from the tip of the coating nozzle The coating liquid adheres to and accumulates on one cleaning member, and the coating liquid thus accumulated adheres to the front end portion of the coating nozzle from one cleaning member. The attached coating liquid can also be removed from the coating nozzle by the other cleaning member The front end is properly removed.

Here, in order to move the first cleaning member and the second cleaning member sequentially in the opposite direction along the front end of the coating nozzle, it is only necessary to move the second cleaning member after moving the first cleaning member Just move it, but you can perform this action multiple times.

As a result, in the cleaning device of the coating nozzle of the present invention, even if there is a coating liquid adhering to and accumulated in the cleaning member from the cleaning member to the front end portion of the coating nozzle, the attached coating liquid can be removed from the coating nozzle Appropriate removal of the front end part can reliably prevent the occurrence of poor coating, especially when a high viscosity coating liquid is used, the coating liquid adhering and accumulated on the cleaning member will not adhere to the front end of the coating nozzle and adhere The tip of the coating nozzle can be cleaned stably and sufficiently by the cleaning member on the object to be coated or its periphery.

10‧‧‧Desktop coating machine

11‧‧‧Workbench

12‧‧‧ Traveling track

13‧‧‧ Traveling components

20‧‧‧Coating nozzle

21‧‧‧Front face

22‧‧‧spit out

23‧‧‧Bevel slope

24‧‧‧ Manifold

25‧‧‧Guide

30‧‧‧Cleaning device

31‧‧‧Guide track

32‧‧‧Mobile station for cleaning

33‧‧‧First cleaning member

33a, 34a ‧‧‧ Cleaning scraper

34‧‧‧Second cleaning member

35‧‧‧First front surface cleaning member

36‧‧‧Second front surface cleaning member

W‧‧‧Coated body

x‧‧‧coating fluid

Fig. 1 is a schematic explanatory diagram of a coating device using a cleaning device for a coating nozzle according to an embodiment of the present invention.

FIG. 2 shows that in the aforementioned coating device, the coating nozzle is advanced above the object to be coated installed on the table, and the coating liquid is discharged from the slit-shaped discharge port provided on the front end surface of the coating nozzle A schematic explanatory diagram of a state in which the coating liquid is discharged and applied on the surface of the object to be coated.

FIG. 3 shows that in the aforementioned coating device, the coating nozzle is made to travel above the object to be coated installed on the table, and the coating liquid is discharged from the slit-shaped discharge port provided on the front end surface of the coating nozzle A schematic explanatory diagram of a state in which the coating liquid is discharged and applied to the entire surface of the object to be coated.

FIG. 4 shows the state in which the coating liquid remains at the tip of the coating nozzle after the coating liquid is applied to the surface of the object to be coated in the aforementioned coating device, (A) is a schematic side view of the coating nozzle , (B) is a schematic cross-sectional view of the coating nozzle.

Fig. 5 shows that in the cleaning device for a coating nozzle of the foregoing embodiment, the coating nozzle with a coating liquid remaining at the tip is guided to the position of the first cleaning member in the cleaning device, and then A schematic explanatory diagram of a state in which the tip portion of the coating nozzle in a state in which the coating liquid remains is incorporated in the cleaning scraper portion among the first cleaning members.

FIG. 6 shows the length of the tip of the coating nozzle in the state where the first cleaning member and the first front-end surface cleaning member are in the state where the coating liquid remains in the cleaning device for the coating nozzle of the foregoing embodiment The state of moving in the lateral direction to clean the front end of the coating nozzle, (A) shows that the first cleaning member and the first front end surface cleaning member are moved toward the front end of the coating nozzle with the coating liquid remaining A schematic explanatory diagram of the state, (B) shows that the first cleaning member and the first front end surface cleaning member are moved along the front end portion of the coating nozzle to perform cleaning, and the remaining portion of the coating nozzle is removed In the case of the coating liquid, there is a schematic explanatory diagram of a state where a part of the removed coating liquid adheres to the first cleaning member or the first front end surface cleaning member.

FIG. 7 is a diagram showing the first cleaning member from the cleaning device in which the coating nozzle after cleaning with the first cleaning member and the first front-end surface cleaning member is cleaned in the coating nozzle cleaning device of the foregoing embodiment. After the position is guided to the position of the second cleaning member, a schematic explanatory diagram of a state where the tip portion of the coating nozzle is inserted into the cutout of the cleaning scraping portion among the second cleaning members.

FIG. 8 shows that in the cleaning device for a coating nozzle of the foregoing embodiment, the second cleaning member and the second front end surface cleaning member are directed toward the first cleaning along the longitudinal direction of the front end portion of the coating nozzle The state in which the member and the first front end surface cleaning member are moved in the reverse direction to clean the front end portion of the coating nozzle, (A) shows the direction of the coating nozzle after cleaning by the first cleaning member and the first front end surface cleaning member (B) is a schematic explanatory diagram showing a state in which the second cleaning member and the second front end surface cleaning member are moved in the reverse direction of the first cleaning member and the first front end surface cleaning member, (B) shows the second cleaning A schematic explanatory view of the state after the member and the second front end surface cleaning member move in the opposite direction of the first cleaning member and the first front end surface cleaning member along the front end portion of the application nozzle to further clean the front end portion of the application nozzle .

Fig. 9 shows that in the cleaning device for a coating nozzle of the foregoing embodiment, when the coating liquid remaining on the tip of the coating nozzle after being used several times is cleaned from the tip of the coating nozzle, The first cleaning member and the first front end surface cleaning member to which a part of the removed coating liquid is attached are moved along the longitudinal direction of the front end portion of the coating nozzle with the coating liquid remaining to clean the coating tube After the front end portion of the nozzle, the second cleaning member and the second front end surface cleaning member are aligned with the front end portion of the coating nozzle to which the coating liquid remaining on the first cleaning member or the first front end surface cleaning member adheres The longitudinal direction of the tip of the coating nozzle moves in the opposite direction of the first cleaning member and the first tip surface cleaning member to perform cleaning to remove the state of the coating liquid remaining on the tip of the coating nozzle, (A) It is a schematic explanatory diagram showing the state which moved the said 1st cleaning member and the 1st front-end surface cleaning member toward the front-end|tip part of the coating nozzle in which the coating liquid remains, (B) shows that the said 1st cleaning member The cleaning member and the first front end surface cleaning member move along the front end portion of the coating nozzle to perform cleaning to remove the coating liquid remaining on the front end portion of the coating nozzle, and may remain on the first cleaning member or the first front end surface The schematic illustration of the state where the coating liquid of the cleaning member adheres and remains on the front end of the coating nozzle, (C) shows that the second cleaning member and the second front end surface cleaning member are oriented using the first cleaning member and the first 1 After the cleaning of the front end surface cleaning member, a part of the coating liquid remains at the front end of the coating nozzle and moves in the opposite direction of the first cleaning member and the first front end surface cleaning member. (D) is a schematic illustration The second cleaning member and the second front end surface cleaning member are moved along the front end portion of the coating nozzle in the opposite direction of the first cleaning member and the first front end surface cleaning member to perform cleaning, and the first cleaning member and the first cleaning member are removed. 1 A schematic explanatory diagram of the state after the front end surface cleaning member is attached to the coating liquid at the front end portion of the coating nozzle.

Hereinafter, a cleaning device for a coating nozzle according to an embodiment of the present invention will be specifically described based on the drawings. In addition, the cleaning device for a coating nozzle of the present invention is not limited to those shown in the following embodiments, and can be implemented with appropriate modifications without changing the gist of the invention.

Here, in this embodiment, as shown in FIG. 1, the object to be coated W, such as a glass plate, is installed above the table 11 of the desktop coater 10, and the coating nozzle 20 is installed along the travel The traveling member 13 that travels above the coated object W installed in the above-described manner by the rail 12 allows the coating nozzle 20 to travel above the coated object W by the traveling member 13.

Next, the coating liquid x is discharged from the coating nozzle 20 to the surface of the object W to apply the coating liquid x on the surface of the object W.

Here, when the coating liquid x is applied to the surface of the object W using the coating nozzle 20 as described above, as shown in FIG. 2, the coating nozzle 20 is used for: The elongated front end surface 21 extending in the direction orthogonal to the travel direction of the nozzle 20 and facing the object to be coated W is provided with a slit-shaped discharge port 22 that discharges the coating liquid x to the surface of the object to be coated W, and On both sides of the front end surface 21, V-shaped lip arch slopes 23 that extend upward in a slope shape are provided, and the front end portion is formed into a substantially V-shape.

Next, the coating liquid x contained in the coating liquid supply container (not shown) is supplied to the manifold 24 provided inside the coating nozzle 20, and the coating liquid x supplied to the manifold 24 is guided through The passage 25 is guided to the aforementioned slit-shaped discharge port 22 provided on the front end surface 21 of the coating nozzle 20, and then the coating liquid x is discharged from the discharge port 22 to the surface of the object W to apply the coating liquid x is coated on the surface of the object W to be coated.

Next, as described above, the coating liquid x is discharged from the slit-shaped discharge port 22 provided in the front end surface 21 of the coating nozzle 20 to the surface of the object to be coated W, and the coating tube is caused by the traveling member 13 The nozzle 20 travels above the object to be coated W, and as shown in FIG. 3, applies the coating liquid x to the entire surface of the object to be coated W.

In addition, in the above-mentioned desktop coater 10, the coating liquid x is discharged from the slit-shaped discharge port 22 provided in the front end surface 21 of the coating nozzle 20 to the surface of the object W as described above. When the coating nozzle 20 is run and the coating liquid x is applied to the entire surface of the object W, as shown in FIGS. 4(A) and (B), part of the coating liquid x discharged from the discharge port 22 adheres And it remains at the tip of the coating nozzle 20.

Therefore, the cleaning solution of this embodiment is used to remove the coating liquid x remaining at the tip of the coating nozzle 20 after the coating liquid x is applied to the surface of the object W to clean the tip of the coating nozzle 20 The device 30 is provided above the table 11 on the downstream side in the traveling direction of the coating nozzle 20 than the position of the coating object W after the coating nozzle 20 is applied and the coating liquid x is applied to the coating object W.

Here, in this cleaning device 30, a guide rail 31 extending in a direction orthogonal to the aforementioned traveling direction is provided above the table 11 on the downstream side in the traveling direction of the coating nozzle 20 from the object W to be coated. The first cleaning member 33 and the second cleaning member 34 are provided above the cleaning moving table 32 that reciprocates above the guide rail 31 with a required interval in the traveling direction of the coating nozzle 20 for use A cleaning member for removing the coating liquid x remaining on the front end of the coating nozzle 20, and the first cleaning member 33 and the second cleaning member 34 are provided to have shapes corresponding to the shape of the front end of the coating nozzle 20, respectively The cleaning scrapers 33a, 34a of the shape of the cutout, and the first cleaning member 33 and the second cleaning member 34 are reciprocated in the longitudinal direction of the coating nozzle 20, that is, the cleaning moving table 32 The direction of the direction is set to be inclined in the opposite direction. In addition, in this cleaning device 30, the first cleaning member 33 and the second cleaning member 34 are each inclined in the direction of movement when cleaning the front end portion of the coating nozzle 20.

In addition, here, although the cleaning scrapers 33a and 34a are described as an integral member provided with a cutout corresponding to the shape of the front end portion of the coating nozzle 20, other types may also be used. A member (not shown) scrapes the left and right inclined surfaces of the tip portion of the coating nozzle 20 forming the V-shaped lip arch inclined surface 23.

In addition, in the cleaning device 30 described above, in order to surely remove the coating liquid x remaining on the front end surface of the coating nozzle 20 after the coating liquid x is applied from the slit-shaped discharge port 22 to the surface of the object W to be coated The front end portion of the cleaning coating nozzle 20 is located at a position opposite to the inclined direction of the first cleaning member 33 inclined as described above, and the cleaning device is provided so as to be inclined in the same direction as the first cleaning member 33 The first front end surface cleaning member 35 of the front end surface 21 of the coating nozzle 20 having the discharge port 22 is positioned opposite to the inclination direction of the second cleaning member 34 in the same direction as the second cleaning member 34 The second front end surface cleaning member 36 that cleans the front end surface 21 of the coating nozzle 20 provided with the discharge port 22 is provided so that the direction is inclined.

Here, the coating liquid x remaining on the front end of the coating nozzle 20 after the coating liquid x is applied to the surface of the object W as described above is removed from the coating nozzle 20 by the cleaning device 30 described above. When the front end portion is removed and the front end portion of the coating nozzle 20 is cleaned, first, as shown in FIG. 5, the coating nozzle in a state where the coating liquid x remains on the front end portion after the surface of the object W is coated is coated 20. Guide to the first cleaning member 33 provided above the cleaning moving table 32 among the cleaning devices 30, and insert the tip of the coating nozzle 20 into the cleaning scraper 33a provided in the first cleaning member 33 .

Next, as shown in FIGS. 6(A) and (B), in the state where the tip portion of the coating nozzle 20 is embedded in the cleaning scraper 33a of the first cleaning member 33, as shown in FIGS. Among the first cleaning member 33, the cleaning scraping portion 33a and the front end surface of the first front end surface cleaning member 35 are in contact with the front end of the coating nozzle 20, and the cleaning mobile table 32 is moved from the coating nozzle 20 The one end side of the longitudinal direction travels in the oblique direction of the first cleaning member 33 and the first front end surface cleaning member 35 to the other end side of the coating nozzle 20 in the longitudinal direction, and the aforementioned first cleaning member 33 and the first front end are used The surface cleaning member 35 removes the coating liquid x remaining on the tip of the coating nozzle 20 from the tip of the coating nozzle 20. In addition, when the first cleaning member 33 and the first front-end surface cleaning member 35 are used to remove the coating liquid x remaining at the front end of the coating nozzle 20, the viscosity of the coating liquid x may be high. A part of the coating liquid x removed from the front end of the coating nozzle 20 adheres to the first cleaning member 33 or the first front end surface cleaning member 35, or a part of the coating liquid x partially remains at the front end of the coating nozzle 20 Etc.

Next, the cleaning moving table 32 is advanced to the other end side of the coating nozzle 20 in the longitudinal direction as described above, and the first cleaning member 33 and the first front end surface cleaning member 35 are used to remove the After the coating liquid x is removed from the front end, the coating nozzle 20 moves from the position of the first cleaning member 33 provided above the cleaning moving table 32 to the position of the second cleaning member 34, as shown in FIG. The tip portion of the coating nozzle 20 is fitted into the cleaning scraping portion 34a of the second cleaning member 34.

Next, as shown in FIGS. 8(A) and (B), in the state where the tip portion of the coating nozzle 20 is embedded in the cleaning scraper 34a of the second cleaning member 34, as shown in FIGS. Among the second cleaning members 34, the cleaning scraping portion 34a and the front end surface of the second front end surface cleaning member 36 are in contact with the front end of the coating nozzle 20, and the cleaning moving table 32 is moved in the opposite direction from the previous After the movement, the other end side of the coating nozzle 20 in the longitudinal direction faces the inclined direction of the second cleaning member 34 and the second front end surface cleaning member 36 and returns to one end side in the longitudinal direction of the coating nozzle 20. The 2 cleaning member 34 and the second front end surface cleaning member 36 remove the coating liquid x remaining on the front end portion of the coating nozzle 20 from the front end portion of the coating nozzle 20. In this way, after the front end portion of the coating nozzle 20 in which the coating liquid x remains is cleaned by the first cleaning member 33 and the first front end surface cleaning member 35, the second cleaning member 34 and the second front end surface cleaning member 36 are reused By cleaning, the coating liquid x in the front-end|tip part of the coating nozzle 20 can fully be removed.

In addition, in the case where the front end portion of the coating nozzle 20 in which the coating liquid x remains is cleaned a plurality of times as described above, when the first cleaning member 33 and the first front end surface cleaning member 35 are applied from A part of the coating liquid x removed by the front end portion of the nozzle 20 adheres and accumulates in the first cleaning member 33 or the first front end surface cleaning member 35, and the coating liquid accumulated in the first cleaning member 33 and the first front end surface cleaning member 35 When the amount of x gradually increases and increases, as shown in FIGS. 9(A) and (B), the cleaning scraper 33 a and the front end of the first front end surface cleaning member 35 among the first cleaning members 33 are used. The surface is in contact with the front end portion of the coating nozzle 20, and the cleaning moving table 32 travels from one end side in the longitudinal direction of the coating nozzle 20 to the other end side in the longitudinal direction of the coating nozzle 20. 1 The cleaning member 33 and the first front end surface cleaning member 35 accumulate in the first cleaning member 33 or the first front end when the coating liquid x remaining on the front end portion of the coating nozzle 20 is removed from the front end portion of the coating nozzle 20 The coating liquid x of the surface cleaning member 35 adheres to the front end portion of the coating nozzle 20 again, so that the amount of the coating liquid x remaining on the front end portion of the coating nozzle 20 increases. Therefore, if the coating nozzle 20 is directly used in such a state to perform coating, poor coating will occur.

Also, in FIG. 9(A), when the front end surfaces of the cleaning scraping portion 33a and the first front end surface cleaning member 35 among the first cleaning members 33 are in contact with the front end portion of the coating nozzle 20, as shown in the figure As shown, the coating liquid x accumulated in the first cleaning member 33 or the first front-end surface cleaning member 35 may once again adhere to the upstream side in the traveling direction of the cleaning moving table 32, and thus remain in the coating nozzle 20 The front end surface 21 and the lip arch slope 23.

On the other hand, in this embodiment, as described above, the coating nozzle 20 cleaned by the first cleaning member 33 and the first front end surface cleaning member 35 is moved to the position of the second cleaning member 34, and As shown in FIGS. 9(C) and (D), the cleaning blade 34a of the second cleaning member 34 and the front end surface of the second front end surface cleaning member 36 are brought into contact with the front end of the coating nozzle 20, and The cleaning moving table 32 is moved in the opposite direction and returns from the other end side of the long-side direction of the coating nozzle 20 after the movement to the inclined direction of the second cleaning member 34 and the second front-end surface cleaning member 36 and returns to the coating tube Since the one end side of the nozzle 20 in the longitudinal direction, the coating liquid x adhering to and remaining on the front end surface 21 or the lip arch slope 23 of the coating nozzle 20 can be retained by the second cleaning member 34 and the second front end surface cleaning member 36 The tip of the coating nozzle 20 is sufficiently removed.

As a result, even if the coating liquid x accumulated in the first cleaning member 33 or the first front end surface cleaning member 35 adheres to the front end portion of the coating nozzle 20 again, the coating liquid x remaining at the front end portion of the coating nozzle 20 When the amount increases, it is possible to surely remove the coating liquid x from the tip of the coating nozzle 20 and sufficiently clean the tip of the coating nozzle 20.

In addition, when the coating nozzle 20 is moved from the first cleaning member 33 to the position of the second cleaning member 34, the present embodiment moves the coating nozzle 20 up and down, and although the operation is cumbersome, the first The first cleaning member 33 or the second cleaning member 34 moves.

In addition, although the foregoing embodiment explained that the front end of the coating nozzle 20 is cleaned after the coating liquid x is applied to the surface of the object W to be coated, the coating liquid x may be applied when this operation is continuously performed. The front end portion of the coating nozzle 20 is cleaned before being applied to the surface of the object W.

20‧‧‧Coating nozzle

21‧‧‧Front face

23‧‧‧Bevel slope

31‧‧‧Guide track

32‧‧‧Mobile station for cleaning

33‧‧‧First cleaning member

34‧‧‧Second cleaning member

35‧‧‧First front surface cleaning member

36‧‧‧Second front surface cleaning member

x‧‧‧coating fluid

Claims (4)

A cleaning device for a coating nozzle uses a coating nozzle formed to be longer in a direction crossing the direction of travel over the object to be coated, and at the tip of the coating nozzle facing the object to be coated The surface is provided with a slit-shaped discharge port that discharges the coating liquid along the longitudinal direction of the coating nozzle, and the coating nozzle travels above the object to be coated and discharges the coating liquid from the slit-shaped discharge port After the coating liquid is applied to the surface of the object to be coated, the cleaning member that moves under the coating nozzle along the front end of the coating nozzle is used to remove the coating nozzle that remains in the slit-shaped discharge port. The coating liquid including the front end portion of the front end surface cleans the front end portion of the coating nozzle, wherein the front end portion of the coating nozzle is provided so as to be separated by a required interval in the traveling direction of the coating nozzle The first cleaning member and the second cleaning member of the cleaning scraper corresponding to the shape are used as the cleaning member, and the first cleaning member and the second cleaning member are directed from below the coating nozzle toward the coating nozzle The front end portion of the nozzle is inclined in the opposite direction with respect to the longitudinal direction of the coating nozzle, and the cleaning scraping portion of the first cleaning member and the second cleaning member is along the front end portion of the coating nozzle The first cleaning member and the second cleaning member sequentially move in the reverse direction along the front end of the coating nozzle, and clean the front end of the coating nozzle. The cleaning device for a coating nozzle as described in item 1 of the patent application range, wherein the first cleaning member and the second cleaning member are respectively moved from the aforementioned direction toward the moving direction when cleaning the front end portion of the coating nozzle The lower part of the coating nozzle is inclined toward the front end of the coating nozzle. The cleaning device for a coating nozzle as described in item 1 or 2 of the patent application, wherein a coating nozzle for cleaning a slit-shaped discharge port is provided on the downstream side in the moving direction of the first cleaning member The first front end surface cleaning member of the front end surface is provided with a second front end surface cleaning member for cleaning the front end surface of the coating nozzle provided with a slit-shaped discharge port on the downstream side in the moving direction of the second cleaning member. The cleaning device for a coating nozzle according to claim 1 or 2, wherein when the front end of the coating nozzle is cleaned by the first cleaning member and the second cleaning member, the coating nozzle system The first cleaning member and the second cleaning member can be moved up and down relative to each other, and the leading end of the coating nozzle can be guided into the cleaning scraping part of the first cleaning member, and the first cleaning member can be used. 1 The cleaning member cleans the front end portion of the coating nozzle, and then guides the front end portion of the coating nozzle to the cleaning scraping portion among the second cleaning members, and uses the second cleaning member to clean the coating nozzle Of the front end.

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