KR100839781B1 - Equipment for cleaning coating-die - Google Patents

Abstract

A cleaning apparatus of a coating die is provided to wash a cleaning member simply by supplying washing liquid to the front end of the cleaning member from a washing liquid supply nozzle. In a cleaning apparatus of a coating die(10), the front end of a cleaning member comes into contact with the front section of a lip portion(11) of the coating die equipped with a thin and long slit-shaped ejection port supplying application liquid(1), across the longitudinal direction of the coating die. And then, the cleaning member moves in the longitudinal direction of the coating die to remove application liquid stuck on the lip portion of the coating die. A suction unit sucks the application liquid removed from the lip portion of the coating die by the cleaning member. A washing liquid supply nozzle moving together with the cleaning member is installed behind the movement direction of the cleaning member. After the application liquid stuck on the lip portion of the coating die is removed, the washing liquid is supplied toward the front end of the cleaning member from the washing liquid supply nozzle.

Description

Cleaning device for coating dies {EQUIPMENT FOR CLEANING COATING-DIE}

BRIEF DESCRIPTION OF THE DRAWINGS The cleaning device of the coating die in one Embodiment of this invention WHEREIN: The state which removes the coating liquid adhering to the lip | tip end surface of the coating die, or inclined surfaces of both sides from the side of a coating die is shown. Schematic illustration shown.

Fig. 2 is a schematic illustration showing a state in which the coating liquid attached to the lip portion front end surface of the coating die or both inclined surfaces thereof is removed from the front side of the coating die in the cleaning device for the coating die in the embodiment. Degree.

Fig. 3 is a schematic explanatory view showing a state in which the distal end portion of the auxiliary cleaning member is brought into contact with the inclined surfaces positioned on both sides of the distal end surface for coating in the cleaning apparatus for the coating die in the embodiment.

Fig. 4 shows the cleaning device for the coating die in the embodiment, wherein after removing the coating liquid attached to the coating die by the cleaning member, the cleaning member is removed from the cleaning liquid supply nozzle provided behind the moving direction of the cleaning member. Schematic explanatory drawing which showed the state which supplies the washing | cleaning liquid toward a front-end | tip part.

[Explanation of Major Codes]

1: coating liquid 2: cleaning liquid

10: die for application 11: lip portion

11a: end face 11b: slope

12: discharge port 20: cleaning member

20a, 20b: blade member 21: cleaning liquid supply nozzle

22: second cleaning liquid supply nozzle 23: suction part

30, 31: Moving device 41: Auxiliary cleaning member

The present invention is applied to the various coated objects such as glass substrates, resin films, metal foils, etc. after supplying a coating liquid from a discharge port having an elongated slit shape provided at the tip end face of the lip portion of the coating die. It relates to a cleaning apparatus for a coating die used to adhere to a lip portion of a die and to remove the remaining coating liquid.

In particular, the cleaning member is moved along the longitudinal direction of the coating die while the tip of the cleaning member is in contact with the lip portion front end surface of the coating die provided with the discharge port in the direction crossing the longitudinal direction of the coating die. And a cleaning apparatus for the coating die for attaching to a lip portion of the coating die to remove the remaining coating liquid.

Conventionally, when manufacturing a Plasma Display Panel, an organic electroluminescence display panel, a liquid crystal display panel, etc., an application in which an ejection opening having a long slit shape is provided on the front end surface of the lip portion is installed. The coating die is supplied to the object to be coated from the discharge port of the die for application while the die for driving is relatively driven with respect to various objects to be coated such as a glass substrate, a resin film, and a metal foil. It is made to apply | coat a liquid.

Here, as described above, when the coating liquid is supplied from the discharge port of the coating die to the object to be coated, and the coating liquid is applied to the object to be coated, the tip portion of the lip portion of the coating die or both inclined surfaces of the tip end surface are applied. The coating liquid adheres and remains.

Then, the remaining coating liquid is dried in the waiting time until the next coating operation is performed, and the concentration thereof is increased. When the next coating operation is performed in this state, the coated liquid is streaked on the coated object. A problem such as uneven coating occurs or breaks in the middle.

For this reason, as shown in Japanese Laid-Open Patent Publication Nos. 11-147062 and 2002-177848, the tip end surface of a lip portion of a coating die provided with a discharge port is provided. In contact with the longitudinal direction of the coating die, the cleaning member is moved along the longitudinal direction of the coating die in this state, and the coating liquid attached to the lip portion of the coating die is removed. It is proposed that the removed coating liquid is sucked by a suction nozzle or the like.

In addition, in order to prevent the coating liquid from adhering to the cleaning member when the coating liquid attached to the lip portion of the coating die is removed by the cleaning member as described above, the Japanese Laid-Open Patent Publication No. Hei 11-147062 The publication discloses that the cleaning liquid is supplied from the cleaning liquid supply nozzle to the surface on the moving direction side of the cleaning member while removing the coating liquid attached to the lip portion of the coating die by the cleaning member as described above. have.

Moreover, in the said Japanese Unexamined Patent Publication No. 2002-177848, after removing the coating liquid adhering to the lip | rip part of a coating die with the said cleaning member, this cleaning member is guided to the predetermined position in which the cleaning apparatus was installed, and it wash | cleans. It shows to let.

However, when the cleaning liquid is supplied from the cleaning liquid supply nozzle to the surface in the moving direction of the cleaning member while removing the coating liquid adhered to the lip portion of the coating die by the cleaning member, the tip end surface of the coating die is applied. It is necessary to prevent the cleaning liquid from flowing into the coating die from the discharge port provided at the upper portion of the coating die.

For this reason, in this method, it is difficult to supply a cleaning liquid to the front end of the cleaning member which contacts the front end surface of the coating die, and the coating liquid remains attached to the front end of the cleaning member.

In addition, after removing the coating liquid adhering to the lip | rip part of a coating die with a cleaning member, when this cleaning member is guide | induced and wash | cleaned by the predetermined | prescribed position in which the cleaning apparatus was installed, the said cleaning member is the position in which the cleaning apparatus was installed. There is a problem that a mechanism for appropriately setting is required, and the cleaning operation takes time and the production efficiency is also deteriorated.

The present invention is to contact the distal end of the cleaning member in a direction intersecting the longitudinal direction of the die for application to the distal end surface of the application die provided with an elongated slit discharge port. It is a subject to solve the above-mentioned problem in the cleaning apparatus of the coating die which moves along a longitudinal direction and removes the coating liquid adhering to the lip part of a coating die.

That is, in this invention, when the coating liquid adhering to the lip | rip part of a coating die by a cleaning member is made to make it easy to reliably remove the coating liquid adhered to this cleaning member.

[Means for solving the problem]

In the present invention, in order to solve the above problems, the front end portion of the cleaning member has a lengthwise direction of the die for coating on the lip end surface of the coating die provided with an elongated slit discharge port for supplying the coating liquid. In the cleaning apparatus of the application | coating die which makes it contact in a direction crossing and moves this cleaning member along the longitudinal direction of the application | coating die in this state, and removes the coating liquid adhering to the lip part of the application | coating die, The said While providing a suction portion for sucking the coating liquid removed from the lip portion of the coating die by the cleaning member, a cleaning liquid supply nozzle moving along with the cleaning member in the rearward direction of the cleaning member is provided, and the lip of the coating die is provided. After the removal of the coating liquid attached to the portion, the cleaning liquid is applied from the cleaning liquid supply nozzle toward the tip of the cleaning member. I was in a hurry.

Here, when providing the suction part which sucks the coating liquid removed from the lip part of the coating die by the said cleaning member, the said cleaning member is comprised by the two blade members through a predetermined space | interval, and this two blade members The gap between the livers can be a suction part that sucks the coating liquid.

Moreover, in the cleaning apparatus of the said coating die, the 2nd cleaning liquid supply nozzle which moves with a cleaning member toward the moving direction front of the said cleaning member is provided, and the cleaning member is moved and attached to the lip part of a coating die. During the removal of the coating liquid, the cleaning liquid can be supplied from the second cleaning liquid supply nozzle to the inclined surfaces located on both sides of the lip portion front end surface of the coating die.

Moreover, in the cleaning apparatus of the said coating die, a pair of auxiliary cleaning members which contact and move in contact with each inclined surface located in both the lip | tip part front end surfaces of the said coating die can be provided separately from the said cleaning member. have.

The above and other objects, advantages and features of the present invention will become apparent from the embodiments specifically described with reference to the drawings.

Embodiment

EMBODIMENT OF THE INVENTION Hereinafter, the cleaning apparatus of the coating die which concerns on embodiment of this invention is demonstrated concretely based on an accompanying drawing.

In addition, the cleaning apparatus of the coating die which concerns on this invention is not limited to what was shown to the following embodiment, It can change and implement suitably within the range which does not change the summary of invention.

In the cleaning apparatus of the coating die in this embodiment, as shown in FIGS. 1 to 3, an elongated slit-shaped discharge port provided on the tip end surface 11a of the lip portion 11 of the coating die 10 ( After supplying the coating liquid 1 from 12 to a to-be-coated object (not shown), it is provided to both the front end surface 11a of this coating die 10 lip part 11, and this front end surface 11a. It adheres to the inclined surface 11b which is located so that the remaining coating liquid 1 may be removed.

In the cleaning apparatus for the coating die in this embodiment, the tip 10 of the cleaning member 20 is applied to the front end surface 11a of the coating die 10 in which the discharge port 12 is provided. The cleaning device 20 is moved along the longitudinal direction of the die 10 for application by the moving device 30 in this state.

In addition, the cleaning device 20 is moved by the moving device 30 together with the cleaning member 20 to supply the cleaning liquid 2 toward the distal end of the cleaning member 20 toward the rear of the moving direction of the cleaning member 20. Each inclined surface 11b which is provided on both sides of the front end surface 11a of the coating die 10 in which the discharge port 12 is provided at the same time as the cleaning liquid supply nozzle 21 is provided in the moving direction of the cleaning member 20. And a pair of second cleaning liquid supply nozzles 22 and 22 for supplying the cleaning liquid 2 to 11b).

Moreover, in the cleaning apparatus of the coating die in this embodiment, as the said cleaning member 20, it installs so that two blade members 20a, 20b may face through a fixed space | interval, and these two blade members ( The gap between 20a and 20b is used as the suction part 23 for sucking the coating liquid 1 removed from the lip portion 11 of the coating die 10.

In addition, when the two blade members 20a and 20b are provided so as to face each other via a predetermined interval and are used as the suction part 23, the narrower the gap between the two blade members 20a and 20b, the stronger the suction force. Since it is possible to obtain this, it is preferable that the interval between these two blade members 20a and 20b be in the range of 0.5 to 1 mm.

Moreover, in the cleaning apparatus of the coating die in this embodiment, it is located in both the front end surfaces 11a of the lip | rip part 11 of the coating die 10 in the position of the back of the movement direction rather than the said cleaning member 20. The front end portions of the auxiliary cleaning members 41 and 41 made of blades are in contact with each of the inclined surfaces 11b and 11b positioned in the direction crossing the longitudinal direction of the die 10 for coating, and these auxiliary cleaning members 41 and 41 respectively. ) Is moved along the longitudinal direction of the coating die 10 by the moving devices 31 and 31.

And in the cleaning apparatus of the coating die in this embodiment, it is attached to the front end surface 11a of the lip | rip part 11 of the coating die 10, and each inclined surface 11b, 11b located in both. When removing the coating liquid 1 present, as shown in FIG. 1, the cleaning liquid 2 is removed from the pair of 2nd cleaning liquid supply nozzles 22 and 22 which were provided in front of the moving direction of the cleaning member 20, While supplying to each of the inclined surfaces (11b, 11b) located on both sides of the front end face (11a) of the coating die (10), the tip of the cleaning member 20 and the longitudinal direction of the coating die (10) In the state which contacted in the direction which cross | intersects, this cleaning member 20 is made to move along the longitudinal direction of the coating die 10 by the movement apparatus 30. FIG.

In this way, the coating liquid 1 adhered to each of the inclined surfaces 11b and 11b of the coating die 10 is inclined by the cleaning liquid 2 supplied from the second cleaning liquid supply nozzles 22 and 22. 11b), which is guided to the front end face 11a, and the coating liquid 1 in which the mixture of the coating liquid 1 and the cleaning liquid 2 is attached to the front end surface 11a of the coating die 10; Similarly, it is scraped off by the cleaning member 20 and removed together, and is sucked by the suction part 23 in the cleaning member 20.

In addition, in the cleaning apparatus of the application | coating die in this embodiment, each inclined surface located in both the front end surfaces 11a of the application | coating die 10 in the position of the back of the movement direction rather than the said cleaning member 20. Each of the auxiliary cleaning members 41 and 41 having the tip portions in contact with 11b and 11b is moved along the longitudinal direction of the coating die 10 by the moving devices 31 and 31, respectively.

The coating liquid 1 and the cleaning liquid 2 remaining on the inclined surfaces 11b and 11b are removed along the auxiliary cleaning members 41 and 41.

In this way, the coating liquid 1 attached to the front end surface 11a of the coating die 10 is removed, and the coating liquid 1 attached to each of the inclined surfaces 11b and 11b is also the cleaning liquid 2. Together with the application die 10, as appropriate.

Then, as described above, the cleaning liquid 20 is coated with the cleaning liquid 2 with the coating liquid 1 attached to the tip end surface 11a of the coating die 10 and the inclined surfaces 11b and 11b. After removal, as shown in FIG. 4, the said washing | cleaning liquid provided in the back of the movement direction of this cleaning member 20 in the appropriate position in which each said moving device 30 and 31 were separated from the coating die 10. As shown in FIG. The cleaning liquid 2 is supplied from the supply nozzle 21 toward the front end of the cleaning member 20.

In this way, when the coating liquid 1 attached to the coating die 10 by the cleaning member 20 is removed as described above, the coating liquid 1 removed to the cleaning member 20. Even if it remains attached, the coating liquid 1 is properly removed from the cleaning member 20 by the cleaning liquid 2 supplied from the cleaning liquid supply nozzle 21, so that the tip end of the cleaning member 20 is maintained. The coating liquid 1 adheres to it, and it does not remain.

In addition, the mixture of the cleaning liquid 20 and the coating liquid 1 produced at this time may be sucked by the suction part 23 of the said cleaning member 20. FIG.

Moreover, in the cleaning apparatus of the coating die in this embodiment, although the moving apparatuses 30 and 31 were removed in the horizontal direction, you may remove them in the up-down direction.

In addition, in the cleaning apparatus of the application | coating die in this embodiment, the auxiliary cleaning members 41 and 41 of each inclined surface 11b and 11b which are located in both sides of the front end surface 11a of the application | coating die 10 are respectively. Since the distal end portions were contacted to remove the coating liquid 1 remaining on each of the inclined surfaces 11b and 11b, the coating liquid remaining on the inclined surfaces 11b and 11b by these auxiliary cleaning members 41 and 41 ( When 1) is removed, the coating liquid 1 remaining on these inclined surfaces 11b and 11b may be guided back to the front end surface 11a of the application die 10 for which cleaning is completed.

For this reason, although not shown, the 2nd cleaning member which contacts the tip surface 11a of the die | dye 10 for application | coating is provided in the position of the back of a movement direction rather than these auxiliary cleaning members 41 and 41, and this 2nd It is also possible to make the front end of the cleaning member contact and move, and to remove the coating liquid 1 guided again to the front end surface 11a of the coating die 10 as mentioned above.

Also, the auxiliary cleaning members 41 and 41 which remove the coating liquid 1 remaining on each of the inclined surfaces 11b and 11b located on both sides of the application die 10 front end surface 11a are not shown. However, similarly to the cleaning member 20, two blade members are provided so as to face each other via a predetermined interval, and the gap between the two blade members is removed from the inclined surfaces 11b and 11b of the coating die 10. It can be used as a suction part for sucking the applied coating liquid 1.

In addition, the cleaning liquid is supplied toward the distal ends of these auxiliary cleaning members 41 and 41 so as to move together with these auxiliary cleaning members 41 and 41 at positions behind the auxiliary cleaning members 41 and 41 in the moving direction. A cleaning liquid supply nozzle may be provided.

Although the present invention has been sufficiently described by the above embodiments, various modifications and changes are apparent to those skilled in the art.

Accordingly, other modifications and changes are assumed to be included in the scope of the present invention, unless it departs from the scope of the present invention.

In the cleaning device for the coating die in the present invention, as described above, a suction member for sucking the coating liquid removed from the lip portion of the coating die by the cleaning member is provided, and the cleaning member is moved toward the rear of the cleaning member in the moving direction. And a cleaning liquid supply nozzle moving together with each other, and after the removal of the coating liquid attached to the lip portion of the coating die is completed, the cleaning liquid is supplied from the cleaning liquid supply nozzle toward the tip of the cleaning member. Since the cleaning is performed, it is not necessary to guide the cleaning member to a predetermined position and clean it with a cleaning apparatus as in the prior art, and the cleaning of the cleaning member can be carried out simply and with good efficiency, and is applied to the tip of the cleaning member. The liquid can also be sufficiently removed by the cleaning liquid.

Further, the second cleaning liquid supply nozzle which is moved together with the cleaning member toward the moving direction of the cleaning member is provided, and the cleaning member is moved to remove the coating liquid attached to the lip portion of the coating die. 2 When the cleaning liquid is supplied from the cleaning liquid supply nozzle to the inclined surfaces located at both ends of the lip portion of the coating die, the coating liquid attached to the inclined surface is removed from the inclined surface by the cleaning liquid to the lip portion of the coating die. You will be guided.

Then, the coating liquid guided together with the cleaning liquid is removed together with the coating liquid attached to the tip end surface of the lip portion of the coating die by the cleaning member.

In this case, the cleaning liquid is supplied not to the tip end surface of the lip portion of the coating die but to the inclined surfaces positioned on both sides thereof, so that the cleaning liquid does not flow into the coating die from the discharge port.

Furthermore, apart from the cleaning member, a pair of auxiliary cleaning members which move in contact with each of the inclined surfaces located on both sides of the lip portion front end surface of the coating die are provided and attached to the inclined surface as described above. When the coating liquid is dissolved in the cleaning liquid and removed by the pair of auxiliary cleaning members, the coating liquid can be reliably removed by the coating liquid attached to the inclined surface.

Claims (7)

The tip of the cleaning member is brought into contact with the longitudinal direction of the die for application to the lip portion of the coating die provided with an elongated slit discharge port for supplying the coating liquid. In the cleaning apparatus of the coating die which moves along the longitudinal direction of the coating die, and removes the coating liquid adhered to the lip part of the coating die, At the same time as the suction member for sucking the coating liquid removed from the lip portion of the coating die by the cleaning member, a cleaning liquid supply nozzle which moves together with the cleaning member to the rear of the moving direction of the cleaning member is provided, and the coating die is applied. And after the removal of the coating liquid attached to the lip portion of the lip is finished, the cleaning liquid is supplied from the cleaning liquid supply nozzle toward the tip of the cleaning member. The cleaning device for a coating die according to claim 1, wherein the cleaning member is composed of two blade members via a predetermined interval, and a gap between the two blade members is the suction portion. The method according to claim 1, wherein a second cleaning liquid supply nozzle that moves together with the cleaning member toward the moving direction of the cleaning member is provided, and the cleaning member is moved to remove the coating liquid attached to the lip portion of the coating die. The cleaning device for a coating die according to claim 1, wherein the cleaning liquid is supplied from the second cleaning liquid supply nozzle to an inclined surface located on both sides of the lip portion front end surface of the coating die. The method according to claim 2, wherein the second cleaning liquid supply nozzle that moves with the cleaning member in front of the moving direction of the cleaning member is provided, and the cleaning member is moved to remove the coating liquid attached to the lip portion of the coating die. The cleaning device for a coating die according to claim 1, wherein the cleaning liquid is supplied from the second cleaning liquid supply nozzle to the inclined surfaces located on both sides of the lip portion front end surface of the coating die. The coating device according to claim 1, wherein a pair of auxiliary cleaning members are provided separately from the cleaning member to move in contact with each of the inclined surfaces located on both sides of the lip portion front end surface of the coating die. The cleaning device of the die. 3. A coating apparatus according to claim 2, wherein a pair of auxiliary cleaning members are provided which move in contact with each of the inclined surfaces located on both sides of the lip portion front end surface of the coating die, apart from the cleaning member. The cleaning device of the die. 4. A coating apparatus according to claim 3, wherein a pair of auxiliary cleaning members are provided separately from the cleaning member to move in contact with each of the inclined surfaces located on both sides of the lip portion front end surface of the coating die. The cleaning device of the die.

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