JP5983477B2 - Application tool - Google Patents

Description

  The present invention relates to a coating tool used when a coating solution is applied to the surface of an object to be coated such as a sheet-like member or a panel-like member.

  Conventionally, as a coating tool of this type, a pair of head members are disposed adjacent to each other, through a manifold formed between the head members, and a slit that is communicated with the manifold and opened toward the front end side of the head member. A slot die having a configuration in which a coating liquid is applied to an object to be coated is known (for example, see Patent Document 1 below).

  The coating liquid supplied to the coating tool is temporarily held in the manifold in the head member (abutting surface portion between the head members), flows from the manifold to the slit, and from the slit to the tip of the head member (edge edge) ) To be applied to the object to be coated. As described above, the coating liquid is discharged from the manifold through the slit, so that the coating liquid is uniformly applied to the object to be coated.

  The manifold extends in the head member along the extending direction of the head member having a long rectangular plate shape, and its cross-sectional shape is, for example, circular, semicircular, trapezoidal (rectangular) or the like. A supply port for supplying the coating liquid to the manifold is opened in the manifold, and the supply port is disposed, for example, at a central portion or an end portion along the extending direction of the manifold.

  In addition, in the coating tool of the following Patent Document 1, a shim member having a U-shaped plate is disposed between adjacent head members so as to surround the manifold and closes three sides other than the one facing the slit side of the manifold. A part of the shim member protrudes into the manifold. By using such a shim member, the coating liquid flowing into the manifold from the supply port is evenly dispersed throughout the manifold, and the coating liquid is uniformly discharged onto the object to be coated.

JP 2011-240249 A

However, the conventional application tool has room for improvement in improving the application accuracy.
In other words, in the configuration of Patent Document 1, as a result of applying the shim member between the head members and performing coating, the coating amount (coating thickness) along the extending direction from the slit to the coating object is not good. If it is uniform, it is necessary to remove the shim member from the head member and replace it with another shape shim member, which makes adjustment work difficult and time consuming. In addition, a plurality of shim members having different shapes must be prepared, and parts management is complicated, and the manufacturing cost of these shim members is high.

  Moreover, in the initial stage of coating (beginning of coating) and the stable period (a state where coating is stable), the coating amount on the coated object is along the width direction of the coated object (that is, the direction in which the slit extends). However, it was impossible to cope with such a change without stopping the coating apparatus.

  Specifically, for example, when the supply port is arranged in the central part of the manifold, particularly in the initial stage of coating, the filling of the coating liquid into the central part is fast and the filling of the coating liquid into both ends is slow. Therefore, an internal pressure difference is generated in the manifold due to this time difference. Thus, when the internal pressure difference is generated in the manifold, the slit width corresponding to the high internal pressure portion is likely to be larger than the slit width corresponding to the low internal pressure portion, and it is difficult to ensure the coating accuracy. That is, because the slit width is different in each part along the extending direction of the slit, the amount of application to the coated object is difficult to be constant along the width direction of the coated object.

The above-mentioned problem related to the uniformity of the coating amount is likely to occur in the initial stage of coating, but other than that, for example, when the viscosity of the coating liquid is medium / high viscosity (when the viscosity is high), the manifold As a result, the flow rate of the coating solution supplied to the slit was likely to be non-uniform so that the coating accuracy could not be secured.
That is, when the viscosity of the coating liquid is high, the slit width at the center portion in the extending direction of the slit tends to be larger than the slit width at both end portions of the slit, and is applied to the object to be coated from the center portion. The film thickness of the coating liquid to be applied tends to be thicker than the film thickness of the coating liquid applied from the both ends.
There has been a demand for stably increasing the coating accuracy by suppressing such a phenomenon, regardless of the initial stage of coating and the nature (viscosity) of the coating liquid.

Here, for the purpose of increasing the coating accuracy, for example, the portion of the head member where the slit width is likely to be large (that is, the portion corresponding to the portion where the internal pressure of the manifold is likely to be high) is opposed to the other head member side. An adjustment method for forcibly narrowing the slit width by using a structure that can be pressed toward is conceivable.
However, in this case, the variation in the internal pressure of the manifold is further increased, and adjustment of the slit width is liable to occur over a wide range, which is not preferable. Further, in the case of this adjustment method, the structure becomes complicated, the manufacturing cost increases, and the shape of the head member itself is easily restricted.

  The present invention has been made in view of such circumstances, and although the structure is simple, the internal pressure of the manifold can be made uniform regardless of the initial or stable period of coating, and the coating accuracy can be improved. And it aims at providing the coating tool which can maintain the precision stably.

In order to solve such problems and achieve the above object, the present invention proposes the following means.
That is, according to the present invention, a plurality of head members are arranged adjacent to each other, and through a manifold formed between the adjacent head members, and a slit that opens to the leading end side of the head member while communicating with the manifold. An application tool for applying an application liquid to an object to be applied, wherein the manifold extends along an extending direction of the head member, and a supply port for supplying the application liquid to the manifold is provided in the manifold A rectifying plate provided with a rectifying part protruding into the manifold is sandwiched between the head members, and the rectifying part is disposed at a position corresponding to at least the supply port, The head member is formed with a through hole that communicates the outer surface of the head member with the manifold, and a pin member is inserted into the through hole. The material can be projected into the manifold, and the pin member moves forward and backward in the through hole, and pushes or pulls in the rectifying unit to deform the rectifying unit, whereby the rectifying unit and the The distance from the supply port is adjustable.

  According to the coating tool of the present invention, the rectifying plate is sandwiched between the adjacent head members, and the rectifying portion protruding into the manifold among the rectifying plates is disposed at least corresponding to the supply port. Therefore, by moving the pin member forward and backward and pushing in or pulling in the rectification unit, the rectification unit can be deformed and the distance between the rectification unit and the supply port can be adjusted, thereby achieving the following effects.

  That is, for example, by deforming the rectifying unit and moving the rectifying unit closer to the supply port, the coating liquid flowing into the manifold from the supply port is applied to the rectifying unit and directed toward a portion other than the supply port in the manifold. It becomes easy to be supplied. In other words, the rectifying unit makes it easy for the coating liquid to be fed to a portion other than the supply port in the manifold, so that it is possible to prevent the internal pressure of the manifold from being increased near the supply port and to extend the manifold. It becomes possible to make it uniform along the direction. Thereby, since it is also suppressed that the opening width (slit width) of the slit communicating with the manifold varies along the extending direction, the application to the application object is performed uniformly with high accuracy.

  In other words, conventionally, for example, when the supply port is arranged at the central portion in the extending direction of the manifold, the filling of the coating liquid into the central portion is fast and the filling of the coating liquid into both ends is slow. Because of this, an internal pressure difference occurs in the manifold, and it was difficult to ensure coating accuracy. On the other hand, according to the present invention, it becomes possible to fill the entire inside of the manifold uniformly and substantially simultaneously with the rectifying unit, and to suppress the internal pressure difference of the manifold. Therefore, the coating accuracy can be sufficiently increased from the initial stage of coating (beginning of coating).

  Furthermore, since the distance between the rectifying unit and the supply port can be adjusted as appropriate by adjusting the push-in amount or the pull-in amount of the rectifying unit with a pin member, even if coating is applied to the object to be coated during coating. Even when the amount becomes uneven in each part along the extending direction (that is, even when the application accuracy cannot be ensured sufficiently), the pin member is moved forward and backward from the outside of the application tool by a simple operation. Application accuracy can be maintained with high accuracy.

  Specifically, for example, the amount of coating from the slit portion corresponding to the supply port along the extending direction in the slit (for example, the slit portion located at the central portion of the extending direction) is supplied along the extending direction. If it is larger than the coating amount from the slit part corresponding to the part other than the mouth (for example, the slit part located at both ends in the extending direction), the rectifying part is deformed by the pin member and approaches the supply port By doing so, it is possible to prevent liquid feeding to the slit portion corresponding to the supply port, and thereby it is possible to adjust the coating liquid so as to easily flow to the slit portion corresponding to the portion other than the supply port. In addition, when the coating amount from the slit portion corresponding to the supply port is smaller than the coating amount from the slit portion corresponding to the portion other than the supply port, the rectifying unit is deformed by the pin member and the supply port By making it separate from, it can adjust so that a coating liquid may be easily poured into the slit part corresponding to the said supply port.

Thus, for example, even for a medium / high viscosity coating liquid, the coating liquid can be sent away from the vicinity of the supply port in the extending direction by adjusting the position of the rectifying unit, and the internal pressure of the manifold can be reduced. It is possible to make it uniform easily along the extending direction. That is, according to the property (viscosity) of the coating liquid, it is possible to appropriately adjust the amount (deformation amount) of deforming the rectifying unit by the pin member to create a desired coating liquid flow in the manifold. Corresponding to the coating solution, the coating accuracy can be easily increased.
Specifically, in the application of a high-viscosity coating liquid, it becomes possible to reduce the mouth opening phenomenon at the center in the extending direction of the slit, and the coating film thickness at the beginning of coating becomes uniform. . In the application of the low-viscosity coating liquid, the rectifying unit may be brought close to the supply port until the start of coating, and the rectifying unit may be separated from the supply port after the internal pressure of the manifold becomes uniform.

  As described above, in the present invention, the relative position between the rectifying unit and the supply port is adjusted by appropriately deforming the rectifying unit with the pin member according to the property (viscosity) of the coating liquid, and the coating accuracy to the coating object is thus improved. Can be secured stably with high quality. Even during coating, the rectifying section can be deformed by the pin member, that is, the coating accuracy can be maintained at a high quality without stopping the coating device regardless of the initial or stable period of the coating. Will improve.

  As described above, the coating tool of the present invention can make the internal pressure of the manifold uniform regardless of the initial stage or the stable period of coating, can increase the coating accuracy, and can stably maintain the accuracy. In addition, as described above, the structure is simple, the manufacturing cost is reduced, and the parts management is easy while achieving the remarkable effect.

  In the coating tool of the present invention, the rectifying unit may be elastically deformable.

In this case, the above-described effects can be easily obtained without connecting the pin member and the rectifying unit using a complicated configuration. That is, for example, a protruding end portion (a tip portion protruding into the manifold) of the pin member can be brought into contact with the rectifying portion, and the rectifying portion can be pushed into the manifold by the pin member to elastically deform the rectifying portion. In addition, by pulling (retracting) the pin member from the state in which the rectifying unit is elastically deformed in this way, the pressing by the pin member is released, and the rectifying unit can be restored and deformed.
Therefore, the effects described above can be obtained with a simple configuration.

  Moreover, the coating tool of this invention WHEREIN: The said rectification | straightening part deform | transforms, and it is good also as the distance of the edge of this rectification | straightening part and the inner surface of the said manifold being adjustable.

  In this case, the rectifying unit is deformed by the pin member, whereby the distance between the edge of the rectifying unit and the inner surface of the manifold is changed, and the flow rate of the coating liquid flowing between them is adjusted. Therefore, it is possible to adjust more quickly together with the adjustment of the distance between the rectifying unit and the supply port described above.

  In the coating tool of the present invention, end plates for setting the length and the opening width of the slit along the extending direction are disposed at both ends in the extending direction between the head members. The rectifying plate may be formed integrally with the end plate.

  In this case, since the rectifying plate provided with the rectifying unit and the end plate are integrally formed, the number of parts is reduced. In this case, for example, the outer shape of the U-shaped plate-shaped member (shim member) made up of the rectifying plate and the end plate is formed to match the outer shape of the head member, thereby positioning the shim member with respect to the head member. Is facilitated, and the rectifying portion can be arranged at a predetermined position in the manifold with high accuracy.

  Further, in the coating tool of the present invention, the rectifying unit extends along the extending direction in the manifold, and a height perpendicular to the extending direction of the rectifying unit extends from the supply port. It is good also as it is made small as it leaves | separates in a present direction.

  In this case, as the height of the rectification unit decreases as the distance from the supply port increases in the extending direction, the gap (distance) between the edge of the rectification unit and the inner surface of the manifold is increased from the supply port to the above-described distance. Since it becomes larger as it is separated in the extending direction, it is possible to feed the coating liquid to the slit part corresponding to the part other than the supply port while suppressing the liquid feeding amount to the slit part corresponding to the supply port. This can be realized with a simple configuration.

  Further, in the coating tool of the present invention, the rectifying portion is composed of a plurality of blade portions divided in the extending direction in the manifold, and a plurality of the pin members are provided corresponding to each of the blade portions. Each blade part may be individually deformed by these pin members.

  In this case, each vane part of the rectifying unit can be individually deformed by the corresponding pin member, and the distance between the rectifying unit and the supply port can be finely adjusted, so the flow of the coating liquid in the manifold can be finely adjusted. Is possible.

  In the coating tool of the present invention, the through hole of the head member and the pin member may be screwed together.

  In this case, it is easy to set the push-in amount or pull-in amount of the rectifying unit by the pin member with high accuracy. In addition, the arrangement position of the rectifying unit deformed in the manifold can be easily maintained stably.

  According to the application tool of the present invention, the internal pressure of the manifold can be made uniform regardless of the initial stage or the stable period of application, the application accuracy can be improved, and the accuracy can be stably maintained, although the structure is simple. it can.

It is a sectional side view (longitudinal sectional view) showing an application tool concerning one embodiment of the present invention. It is a front view which shows the shim member of the coating tool of FIG. It is a front view which shows the modification of a shim member. It is a front view which shows the modification of a shim member.

Hereinafter, application tool 1 concerning one embodiment of the present invention is explained with reference to drawings.
The application tool 1 of this embodiment is a slot die that applies an application liquid to a surface of an object to be applied such as a flexible sheet-like member or panel-like member so as to have a predetermined film thickness. The coating tool 1 can be applied to various coating solutions from low viscosity to medium / high viscosity.

As shown in FIG. 1, the application tool 1 according to the present embodiment includes a pair of head members 2 arranged opposite to each other, a manifold 4 formed between the head members 2, and the manifold 4. And a slit 3 opened toward the front end side of the head member 2.
Here, the head member 2 has a long rectangular plate shape or block shape, and the pair of head members 2 are arranged to face each other so as to be adjacent to each other in the thickness direction. In this specification, the longitudinal direction (direction perpendicular to the paper surface of FIG. 1) in which the head member 2 extends is referred to as the extending direction L of the coating tool 1, and the thickness direction of the head member 2 is defined as the coating tool 1. The width direction W is referred to as the extending direction L and the direction perpendicular to the width direction W is referred to as the height direction H of the coating tool 1. Further, in the height direction H, the direction in which the slit 3 is opened to the outside from between the head members 2 (the direction in which the coating liquid is discharged to the application object) is the front end side (the front end side of the head member 2, The side opposite to the direction in which the slit 3 is opened to the outside is referred to as the base end side (the base end side of the head member 2 and the lower side in FIG. 1).

  The coating tool 1 has the tip (blade edge) of the head member 2 opposed to the object to be coated, and the extending direction of the slit 3 opened between the head members 2 (the same as the extending direction L of the head member 2). (Orientation) is attached to a coating apparatus (not shown) so as to coincide with the width direction of the object to be coated. Then, the coating liquid supplied from the coating liquid tank into the manifold 4 by the supply pump flows through the slit 3 from the manifold 4 and is discharged from the tip of the head member 2 (slit 3 opening). The coating liquid is applied so as to have a predetermined film thickness (layer thickness) on the surface of the object to be moved (running) along the width direction W of the coating tool 1.

  The head member 2 is made of a metal material such as stainless steel, and has a trapezoidal shape in a longitudinal sectional view (side sectional view) shown in FIG. In the head member 2, the outer surface 7 that forms the upper base of the trapezoid and faces the outer side in the width direction W, and the inner surface (butting surface) 8 that forms the lower base of the trapezoid and faces the inner side of the width direction W are respectively wide. A planar shape perpendicular to the direction W is formed. The inner surfaces 8 of a pair of adjacent head members 2 are opposed to each other with a gap, and a slit 3 is defined in the gap.

  The slit 3 is a distribution space (gap) of the coating liquid defined by the inner surfaces 8 of the pair of head members 2 and the shim member 11 sandwiched between the head members 2. It is formed in a region on the distal end side from a portion corresponding to the manifold 4 and opens toward the distal end side of the head member 2, while facing the proximal end side of the head member 2 and both sides in the extending direction L. Is not open.

  In FIG. 2, the shim member 11 includes a pair of end plates 12 and a rectifying plate 15 that connects the end plates 12 to each other. The end plates 12 are respectively disposed at both ends in the extending direction L between the adjacent head members 2 and set the length and the opening width (slit width) along the extending direction L of the slit 3. doing. The rectifying plate 15 is disposed in the manifold 4 and on the base end side (lower side in FIG. 2) between the head members 2.

  As a whole, the shim member 11 has a U-shaped or U-shaped plate shape that opens toward the distal end side (the upper side in FIG. 2) of the head member 2. And the area | region (area | region located between a pair of end plate 12) corresponding to the extension direction L of this manifold 4 is located in the front end side of the rectangular-shaped manifold 4 shown with a dashed-two dotted line in FIG. The slit 3 is formed. In the illustrated example, the length along the extending direction L of the slit 3 is slightly smaller than the length of the manifold 4.

  A pair of adjacent head members 2 are connected by bolts or the like with the shim member 11 opening toward the slit 3 side (tip side) sandwiched between the inner surfaces 8. Thus, the slit width is set to be a predetermined value (the thickness of the shim member 11, specifically corresponding to the thickness of the end plate 12). The detailed configuration of the shim member 11 will be described later.

As shown in FIG. 1, the base end surface 9 facing the base end side in the head member 2 is a plane perpendicular to the height direction H.
The front end surface 10 facing the front end side in the head member 2 is gradually inclined toward the front end side toward the inner side in the width direction W (that is, the center side in the width direction W, the slit 3 side). Further, the inner end portion in the width direction W of the front end surface 10 is an edge portion 6 that protrudes toward the front end side from a portion other than the end portion, and the edge portions 6 of the pair of head members 2 are The slits 3 are opposed to each other with a gap therebetween. Further, the edge portion 6 has a rectangular plate shape elongated in the extending direction L, and an opening portion of the slit 3 is formed between the tip portions (blade edge) of the edge portion 6. Note that the edge portion 6 does not need to protrude from the tip surface 10, and in this case, a ridge line portion where the tip surface 10 and the inner surface 8 intersect in the head member 2 is a cutting edge of the head member 2.

  In the present embodiment, the edge portion 6 is integrally formed at the distal ends of the pair of head members 2. However, the present invention is not limited thereto, and the edge portion 6 made of a hard material such as cemented carbide is manufactured separately. However, the head member 2 may be disposed at the tip portion by a brazing or attaching / detaching mechanism.

The pair of head members 2 have different shapes. In FIG. 1, of the pair of head members 2A and 2B facing the width direction W, the length along the width direction W of one head member 2A is larger than the length along the width direction W of the other head member 2B. It has become.
Further, in the central portion in the height direction H of the inner surface 8 of one head member 2A, a slot having a semicircular or a semicircular cross section that is recessed from the inner surface 8 and extends along the extending direction L. 5 is formed, and the slot 5 and the inner surface 8 portion of the other head member 2B corresponding to the slot 5 are arranged opposite to each other in the width direction W. A manifold 4 having a semi-elliptical cross section is formed.

  As indicated by a two-dot chain line in FIG. 2, the slot 5 is opened in a rectangular shape on the inner surface 8 of the head member 2A and extends along the extending direction L, whereby the manifold 4 is also connected to the head member. 2 extending in the extending direction L. Further, a supply port 16 for supplying a coating solution to the manifold 4 is opened in the manifold 4.

In FIG. 2, the supply port 16 opens in an intermediate region between both end portions along the extending direction L in the manifold 4, and in the illustrated example, the supply port 16 extends in the extending direction L of the manifold 4. It opens to the center part along (the center of the extending direction L of the intermediate region).
Specifically, in the present embodiment, the liquid supply path 21 that connects the base end surface 9 and the slot 5 is formed only in one of the pair of head members 2A and 2B shown in FIG. In the liquid supply path 21, a portion that opens to the inner peripheral surface of the manifold 4 is the supply port 16. Further, in the illustrated example, the supply port 16 opens from the central portion along the height direction H of the manifold 4 to the base end portion. The liquid supply path 21 is connected to a supply pump (not shown). The liquid supply path 21 only needs to be formed in the head member 2 so that the supply pump installed outside the coating tool 1 and the inside of the manifold 4 can communicate with each other. It is not limited to the example shown by.

In FIG. 1, the other head member 2B is formed with a through hole 13 that communicates the outer surface 7 of the head member 2B with the manifold 4. In the illustrated example, the through hole 13 has a width direction W. It extends along. Further, a pin member 14 is inserted into the through hole 13, and the pin member 14 can project into the manifold 4.
In this embodiment, the through hole 13 of the head member 2B and the pin member 14 are screwed together, and the pin member 14 is rotated around the central axis of the through hole 13 so that the pin member 14 is shown in FIG. It is possible to advance and retreat in the direction of the double arrow shown in.

  In the front view shown in FIG. 2 (when the shim member 11 is viewed from the thickness direction), the end plate 12 of the shim member 11 has a rectangular shape that is long in the height direction H. , A substantially rectangular shape or pentagonal shape that is long in the extending direction L. In the present embodiment, the end plate 12 and the rectifying plate 15 of the shim member 11 are integrally formed, and the plates 12 and 15 have the same thickness. Also, what is indicated by reference numeral 19 in FIG. 2 is a plurality of bolt insertion holes that penetrate the shim member 11 in the plate thickness direction, and bolts for connecting the head members 2 to each other through these bolt insertion holes 19. Is inserted.

  The rectifying plate 15 includes a support portion 17 that is sandwiched between the head members 2, and a rectifying portion 18 that is formed to protrude from the support portion 17 into the manifold 4. In the front view shown in FIG. 2, the support portion 17 has a rectangular shape extending along the extending direction L, and is disposed on the proximal end side of the manifold 4 between the head members 2. Further, in this front view, the rectifying unit 18 has a convex V shape or a triangular shape in which the length in the extending direction L gradually decreases from the support unit 17 toward the distal end side (the upper side in FIG. 2 and the slit 3 side). I am doing.

  The rectifying unit 18 of the rectifying plate 15 is elastically deformable and is disposed at a position corresponding to at least the supply port 16 in the manifold 4. In the present embodiment, the entire shim member 11 (the end plate 12 and the rectifying plate 15) is formed of an elastically deformable metal spring, a resin material, or the like.

The rectifying unit 18 extends in the manifold 4 along the extending direction L, and has a height perpendicular to the extending direction L of the rectifying unit 18 (a length along the height direction H in FIG. The plate width is reduced as the distance from the supply port 16 in the extending direction L increases. In the example of FIG. 2, the length along the extending direction L of the rectifying unit 18 is set slightly smaller than the length along the extending direction L of the manifold 4.
Further, the convex tip 18 a located at the edge facing the opposite side (tip side) of the rectifying portion 18 to the support portion 17 is disposed at a position corresponding to the supply port 16 along the extending direction L. Further, a gap is provided between the end edge of the rectifying unit 18 and the inner surface of the manifold 4.

  In FIG. 1, a protruding end portion (a tip portion facing the manifold 4 side) of the pin member 14 that protrudes into the manifold 4 is a central portion (a portion corresponding to the supply port 16) along the extending direction L of the rectifying portion 18. More specifically, it is in contact with the vicinity of the front end 18a of the central portion. The pin member 14 advances and retreats in the through hole 13, and the distance between the rectifying unit 18 and the supply port 16 can be adjusted by pushing or pulling the rectifying unit 18 to deform the rectifying unit 18. ing.

  Specifically, as the rectifying unit 18 is deformed as described above, the rectifying unit 18 approaches or separates from the supply port 16, but on the contrary, it separates or approaches the slit 3. Is done. Further, by deforming the rectifying unit 18, the distance between the end edge including the tip 18 a of the rectifying unit 18 and the inner surface (inner peripheral surface) of the manifold 4 can be adjusted.

  That is, in FIG. 1, when the pin member 14 advances into the manifold 4 and the rectifying unit 18 is deformed (elastically deformed) toward the supply port 16, the edge including the tip 18 a of the rectifying unit 18 is The flow path of the coating liquid between the supply port 16 and the slit 3 (that is, the cross-sectional area of the flow path) is narrowed by approaching the inner surface of the manifold 4. On the contrary, when the pin member 14 is retracted from the inside of the manifold 4 and is deformed (restored and deformed) in a direction in which the rectifying unit 18 is separated from the supply port 16, the edge of the rectifying unit 18 is 4 is separated from the inner surface of the coating liquid 4 so that the flow path of the coating liquid between the supply port 16 and the slit 3 is expanded.

  Further, the range in which the pin member 14 moves forward and backward with respect to the through hole 13 is set within a range in which the rectifying unit 18 can be elastically deformed. That is, the movement range of the pin member 14 is not set to the range in which the rectifying unit 18 is plastically deformed so as not to be restored. Further, in the present embodiment, the rectifying unit 18 can be brought into contact with the inner surface 8 of the head member 2B when the protruding end portion of the pin member 14 does not protrude into the manifold 4. In the illustrated example, the protruding end of the pin member 14 has a tapered or hemispherical shape that decreases in diameter toward the rectifying unit 18 side.

  According to the coating tool 1 of the present embodiment described above, the rectifying plate 15 is sandwiched between the adjacent head members 2, and the rectifying portion 18 protruding into the manifold 4 of the rectifying plate 15 is at least Since it is arranged corresponding to the supply port 16, the rectifying unit 18 is deformed by pushing or retracting the rectifying unit 18 by moving the pin member 14 back and forth, and the rectifying unit 18 and the supply port Since the distance to 16 can be adjusted, the following effects are achieved.

  That is, for example, by deforming the rectifying unit 18 and moving the rectifying unit 18 closer to the supply port 16, the coating liquid flowing into the manifold 4 from the supply port 16 is applied to the rectifying unit 18 and the supply port 16 in the manifold 4 is applied. Even if it is directed to other parts, it becomes easier to supply. That is, the rectifying unit 18 makes it easy for the coating liquid to be fed to a portion other than the supply port 16 in the manifold 4, and thus the internal pressure of the manifold 4 is prevented from increasing near the supply port 16. It becomes possible to make it uniform along the extending direction of the manifold 4. Thereby, since it is suppressed that the opening width | variety (slit width) of the slit 3 connected to the manifold 4 varies along the extending direction L, application | coating to a to-be-coated object is performed uniformly with sufficient precision.

  In other words, conventionally, for example, when the supply port is arranged at the central portion in the extending direction of the manifold, the filling of the coating liquid into the central portion is fast and the filling of the coating liquid into both ends is slow. Because of this, an internal pressure difference occurs in the manifold, and it was difficult to ensure coating accuracy. On the other hand, according to this embodiment, it becomes possible to fill the entire inside of the manifold 4 with the rectifying unit 18 uniformly and substantially simultaneously, and the internal pressure difference of the manifold 4 can be suppressed. Therefore, the coating accuracy can be sufficiently increased from the initial stage of coating (beginning of coating).

  Furthermore, since the distance between the rectifying unit 18 and the supply port 16 can be adjusted as appropriate by adjusting the push-in amount or the pull-in amount of the rectifying unit 18 with the pin member 14, even if the object to be coated is applied from the slit 3 during coating. Even when the amount of application discharged to the surface becomes uneven in each part along the extending direction L (that is, even when the application accuracy cannot be sufficiently ensured), the pin member 14 is moved from the outside of the application tool 1. The coating accuracy can be maintained with high accuracy by a simple operation of moving forward and backward.

  Specifically, for example, the coating amount from the slit 3 portion corresponding to the supply port 16 along the extending direction L of the slit 3 (in this embodiment, the slit 3 portion located in the central portion of the extending direction L) is When the amount of application is larger than the amount of application from the slit 3 portion corresponding to the portion other than the supply port 16 along the extending direction L (for example, the slit 3 portions located at both ends of the extending direction L), the pin member 14 By deforming the rectifying unit 18 and bringing it closer to the supply port 16, it is possible to prevent the liquid feeding to the slit 3 portion corresponding to the supply port 16, and thereby the coating liquid can be transferred to a portion other than the supply port 16. It can be adjusted so that it can easily flow into the slit 3 corresponding to the part. Further, when the coating amount from the slit 3 portion corresponding to the supply port 16 is smaller than the coating amount from the slit 3 portion corresponding to the portion other than the supply port 16, the pin member 14 causes the rectifying unit 18 to be applied. By deforming and separating from the supply port 16, it is possible to make adjustment so that the coating liquid can easily flow into the slit 3 portion corresponding to the supply port 16.

As a result, for example, even for a medium / high viscosity coating liquid, the coating liquid can be fed away from the vicinity of the supply port 16 in the extending direction L by adjusting the position of the rectifying unit 18 described above. It is possible to easily equalize the internal pressure along the extending direction L. That is, according to the property (viscosity) of the coating liquid, it is possible to appropriately adjust the amount (deformation amount) by which the rectifying unit 18 is deformed by the pin member 14 to create a desired flow of the coating liquid in the manifold 4. Yes, the application accuracy can be easily increased in accordance with various application liquids.
Specifically, in the application of a high-viscosity coating liquid, it becomes possible to reduce the mouth opening phenomenon at the center portion in the extending direction L of the slit 3, and the coating film thickness at the beginning of coating is uniform. Become. In the application of the low-viscosity coating liquid, the rectifying unit 18 is kept close to the supply port 16 until the start of application, and after the internal pressure of the manifold 4 becomes uniform, the rectifying unit 18 is separated from the supply port 16. Also good.

  As described above, in this embodiment, the relative position between the rectifying unit 18 and the supply port 16 is adjusted by appropriately deforming the rectifying unit 18 by the pin member 14 according to the property (viscosity) of the coating liquid, and the coating target is thus applied. Application accuracy to an object can be secured stably with high quality. Further, even during coating, the rectifying unit 18 can be deformed by the pin member 14, that is, the coating accuracy can be maintained at a high quality without stopping the coating apparatus regardless of the initial or stable period of coating. Productivity is improved.

  From the above, the coating tool 1 of this embodiment can make the internal pressure of the manifold 4 uniform regardless of the initial stage or the stable period of coating, and can improve the coating accuracy and stably maintain the accuracy. In addition, as described above, the structure is simple, the manufacturing cost is reduced, and the parts management is easy while achieving the remarkable effect.

  Moreover, since the rectification | straightening part 18 can be elastically deformed, the effect mentioned above can be obtained easily, without connecting the pin member 14 and the rectification | straightening part 18 using a complicated structure. That is, the protruding end portion of the pin member 14 can be brought into contact with the rectifying portion 18 as in the present embodiment, and the rectifying portion 18 can be pushed into the manifold 4 by the pin member 14 to elastically deform the rectifying portion 18. . In addition, by pulling (retracting) the pin member 14 from the state where the rectifying unit 18 is elastically deformed in this way, the pressing by the pin member 14 is released, and the rectifying unit 18 can be restored and deformed. Therefore, the effects described above can be obtained with a simple configuration.

Moreover, since the distance between the end edge including the tip 18a of the rectifying unit 18 and the inner surface of the manifold 4 can be adjusted by the deformation of the rectifying unit 18, the following effects are achieved.
That is, when the rectifying unit 18 is deformed by the pin member 14, the distance between the end edge of the rectifying unit 18 and the inner surface of the manifold 4 is changed, and the flow rate of the coating liquid flowing between them is adjusted. Is done. Therefore, it is possible to adjust more quickly in conjunction with the adjustment of the distance between the rectifying unit 18 and the supply port 16 described above.

  Further, since the rectifying plate 15 including the rectifying unit 18 and the end plate 12 are integrally formed, the number of parts is reduced. Further, in the present embodiment, the rectifying plate 15 and the end plate 12 are integrally formed as a shim member 11, and the shim member 11 is substantially U-shaped. The outer shape of the head member 2 is formed to match the outer shape of the head member 2, so that the shim member 11 can be easily positioned with respect to the head member 2, and the rectifying unit 18 is arranged at a predetermined position in the manifold 4 with high accuracy. The Rukoto.

Further, since the height of the rectifying unit 18 is reduced as the distance from the supply port 16 in the extending direction L is increased, the end of the rectifying unit 18 facing the front end side (the upper side in FIG. 2) is accordingly accompanied. Since the gap (distance) between the edge and the inner surface of the manifold 4 increases as the distance from the supply port 16 in the extending direction L increases, while suppressing the amount of liquid fed to the slit 3 portion corresponding to the supply port 16, Supplying the coating liquid to the slit 3 portion corresponding to the portion other than the supply port 16 can be realized with a simple configuration.
In the present embodiment, the edge of the rectifying unit 18 facing the distal end side is formed so as to extend linearly gradually toward the proximal end side in the extending direction L with the distal end 18a as the apex. For example, the edge of the rectifying unit 18 may have a stepped shape or a broken line shape that gradually goes from the distal end 18a toward the proximal end side in the extending direction L.

  Moreover, since the through-hole 13 of the head member 2 and the pin member 14 are screwed together, it is easy to set the push-in amount or the pull-in amount of the rectifying unit 18 by the pin member 14 with high accuracy. Further, the arrangement position (elastically deformed state) of the rectification unit 18 deformed in the manifold 4 can be easily maintained stably.

  In addition, since the supply port 16 is opened at the central portion along the extending direction L of the manifold 4, it is easy to suppress the internal pressure difference at both ends of the manifold 4, and thus the above-described application accuracy can be improved. Simple, stable and more prominent.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the application tool 1 includes the pair of head members 2, but the present invention is not limited to this. That is, the coating tool 1 includes three or more head members 2 and these are arranged in the width direction W, and the slit 3 and the manifold 4 are respectively provided between the adjacent head members 2. The rectifying unit 18 may be formed in each manifold 4 so as to be deformable.
In this case, in a single coating process, a plurality of types of coating liquids can be discharged from the slits 3 to the object to be coated, and the coating liquid is applied so as to form a plurality of films (layers) on the surface of the object to be coated. Is done.

  In the above-described embodiment, the slit 3 defined between the head members 2 is described as being opened toward the upper side of the coating tool 1 in FIG. Is not to be done. That is, the installation posture of the application tool 1 with respect to the object to be applied is not limited to that described in the above-described embodiment. For example, the slit 3 may be opened downward.

  In addition, although the manifold 4 has a semicircular cross section or a semielliptical cross section by the slot 5 of one head member 2A and the planar inner surface 8 of the other head member 2B, it is limited to this. It is not a thing. That is, for example, not only one head member 2A but also the other head member 2B is formed with a slot 5, and the slots 5 of these head members 2A and 2B are arranged to face each other in the width direction W. The manifold 4 having a circular cross section or an elliptical cross section may be formed. Further, the shape of the manifold 4 may be a polygonal cross section other than those described above, an elliptical cross section, or the like.

  Further, in the above-described embodiment, the supply port 16 opens in an intermediate region between both end portions along the extending direction L in the manifold 4, specifically, a central portion along the extending direction L of the manifold 4. However, the present invention is not limited to this. That is, the supply port 16 may be open to, for example, one end portion or the other end portion along the extending direction L of the manifold 4, and in this case, the rectifying portion 18 of the rectifying plate 15 is connected to the distal end side from the support portion 17. The height (plate width) protruding toward the top is maximized at the portion corresponding to the supply port 16 and is decreased as the distance from the supply port 16 in the extending direction L is increased. It is preferable that the liquid can be fed in a direction to be separated in the extending direction L.

In the above-described embodiment, the length along the extending direction L of the rectifying unit 18 corresponds to the length along the extending direction L of the manifold 4, that is, both ends of the extending direction L of the rectifying unit 18. However, although the example arrange | positioned close to the both end surfaces of the extending direction L of the slot 5 was shown, it is not limited to this.
That is, the rectifying unit 18 is disposed at a position corresponding to at least the supply port 16 in the manifold 4, and feeds the coating liquid flowing from the supply port 16 in a direction in which the coating solution is separated from the supply port 16 in the extending direction L. For example, both ends in the extending direction L of the rectifying unit 18 are on the inner side (center side) of the extending direction L from both end surfaces of the extending direction L of the manifold 4 because the rectifying unit 18 only needs to have a rectifying action. You may arrange | position largely spaced apart.

That is, the shape of the rectifying unit 18 of the rectifying plate 15 may be any shape as long as a desired rectifying action of the coating liquid can be obtained. The part 18 may have a polygonal shape or a semi-ellipse shape including a long rectangular shape extending in the extending direction L. Further, the rectifying unit 18 may not extend in the extending direction L.
In addition, the tip 18 a portion having the largest plate width in the rectifying unit 18 may not be arranged corresponding to the supply port 16.

Here, what is shown in FIGS. 3 and 4 is a modification of the shim member 11 in the coating tool 1 of the above-described embodiment.
In the example shown in FIG. 3, the shim member 11 integrally includes a pair of end plates 12 and a rectifying plate 25 disposed between the end plates 12. The rectifying plate 25 includes a support portion 17 and a rectifying portion 28 that protrudes from the support portion 17 into the manifold 4. The rectifying unit 28 includes a plurality of blade portions 29 divided in the extending direction L in the manifold 4. A plurality of pin members 14 are provided corresponding to the respective blade portions 29, and these pin members 14 are provided. Thus, each blade portion 29 is individually deformed (elastically deformed and restored).

Specifically, in a front view shown in FIG. 3 (when the shim member 11 is viewed from the plate thickness direction), each blade portion 29 has a rectangular shape, and between the blade portions 29 adjacent to each other in the extending direction L. A narrow divided slit 30 extending in the height direction H is formed between each of them. Thus, the rectifying unit 28 includes a plurality of blade portions 29 that can be deformed without interfering with each other.
In the illustrated example, five blade portions 29 of the rectifying portion 28 are provided, and among these blade portions 29, the blade portion 29 located at the center in the extending direction L is arranged corresponding to the supply port 16. Yes. Of these blade portions 29, the length along the extending direction L of the blade portions 29 located at both end portions in the extending direction L is the extension of the blade portions 29 arranged other than both end portions in the extending direction L. The length is shorter than the length along the current direction L. Further, the heights of the blade portions 29 protruding from the support portion 17 toward the slit 3 are the same.

A plurality of through holes 13 are formed in the head member 2B at intervals in the extending direction L so as to correspond to the blades 29 of the rectifying unit 28. The pin members 14 are screwed together.
Further, as in the example shown in FIG. 4, a plurality of (two in the illustrated example) supply ports 16 are opened at intervals in the extending direction L in the manifold 4, and correspond to each supply port 16. And the blade | wing part 29 of the rectification | straightening part 28 may each be arrange | positioned.

  According to the modification shown in FIG. 3 and FIG. 4, each vane portion 29 of the rectifying unit 28 is individually deformed by each corresponding pin member 14, and the distance between the rectifying unit 28 and the supply port 16 is changed. Since fine adjustment is possible, the flow of the coating liquid in the manifold 4 can be adjusted more finely.

  Moreover, although the rectification | straightening parts 18 and 28 were said to be elastically deformable, it is not limited to this. That is, for example, a hinge portion is provided at a connecting portion of the rectifying portions 18 and 28 with the support portion 17 so as to be deformable (that is, the rectifying portions 18 and 28 are deformed by rotating around the hinge portion), and the pin member It is good also as a structure which mechanically connected 14 protrusion parts and the rectification | straightening parts 18 and 28. FIG. In this case, the pin member 14 is preferably connected so as to be rotatable about the central axis of the pin member 14 while being unable to be detached from the rectifying units 18 and 28. In this case, the same effect as that described in the above embodiment can be obtained.

  When the pin member 14 is connected to the rectifying portions 18 and 28 so as not to be detached, the pin member 14 and the through hole 13 may be provided in one head member 2A. In this case, when the pin member 14 moves backward in a direction away from the manifold 4, the rectifying units 18 and 28 are drawn toward the supply port 16 and elastically deformed.

  In the above-described embodiment, the through hole 13 extends along the width direction W in the head member 2B. However, the present invention is not limited to this. That is, for example, the through hole 13 may extend so as to incline with respect to the width direction W in the longitudinal sectional view shown in FIG. Specifically, the through hole 13 may be inclined and extended gradually toward the base end side in the head member 2B toward the inner side (center side) along the width direction W. In this case, the through hole 13 The extension line of the central axis of the straight line is unlikely to deviate from the movement trajectory in the deformation range of the straightening portions 18 and 28, and the effect of easily pushing or pulling the straightening portions 18 and 28 by the pin member 14 can be expected.

  Further, the through hole 13 of the head member 2B and the pin member 14 do not have to be screwed together. However, when these are screwed together, it is preferable because the push-in amounts and pull-in amounts of the rectifying units 18 and 28 by the pin member 14 can be easily finely adjusted and can be stably maintained.

  Further, in the above-described embodiment, the distance between the edge including the tip 18a of the rectifying unit 18 and the inner surface of the manifold 4 can be adjusted by deforming the rectifying unit 18, but the present invention is not limited thereto. Is not to be done. That is, the distance between the edge of the rectifying unit 18 and the inner surface of the manifold 4 may be constant before and after the rectifying unit 18 is deformed. However, it is preferable that the distance can be adjusted by deformation of the rectifying unit 18 because the flow of the coating liquid in the manifold 4 can be easily changed, and the internal pressure of the manifold 4 can be equalized quickly.

  In the above-described embodiment, the rectifying plate 15 is formed integrally with the end plate 12. However, the present invention is not limited to this, and the plates 15 and 12 are provided separately. It doesn't matter. However, since the rectifying plate 15 and the end plate 12 are integrated, the number of parts can be reduced, and the ease of installation between the head members 2 and the positional accuracy of the rectifying unit 18 with respect to the supply port 16 are easily improved. Therefore, it is preferable.

  In addition, in the range which does not deviate from the meaning of this invention, you may combine each structure (component) demonstrated by the above-mentioned embodiment, a modified example, a note, etc., addition of a structure, omission, substitution, others It can be changed. Further, the present invention is not limited by the above-described embodiments, and is limited only by the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Application tool 2 Head member 3 Slit 4 Manifold 7 Outer surface 12 End plate 13 Through-hole 14 Pin member 15, 25 Rectification plate 16 Supply port 18, 28 Rectification part 18a Tip (edge)
29 Blade L L Extension direction

Claims (7)

A plurality of head members are arranged adjacent to each other, and are applied to an object to be coated through a manifold formed between the adjacent head members, and a slit that opens to the leading end side of the head member while communicating with the manifold. An application tool for applying liquid,
The manifold extends along the extending direction of the head member,
A supply port for supplying a coating liquid to the manifold is opened in the manifold,
Between the head members, a rectifying plate having a rectifying part protruding into the manifold is sandwiched,
The rectifying unit is disposed at a position corresponding to at least the supply port,
The head member is formed with a through hole that communicates the outer surface of the head member with the manifold,
A pin member is inserted through the through hole, and the pin member can project into the manifold.
The pin member moves forward and backward in the through hole, and the distance between the rectifying unit and the supply port is adjustable by pushing or pulling the rectifying unit to deform the rectifying unit. An application tool characterized by The application tool according to claim 1,
An application tool, wherein the flow straightening portion is elastically deformable. The application tool according to claim 1 or 2,
An application tool, wherein the distance between the edge of the rectification unit and the inner surface of the manifold can be adjusted by deforming the rectification unit. The application tool according to any one of claims 1 to 3,
End plates for setting the length and opening width along the extending direction of the slits are respectively disposed at both ends in the extending direction between the head members.
The coating tool, wherein the current plate is formed integrally with the end plate. It is an application tool as described in any one of Claims 1-4,
The rectifying portion extends along the extending direction in the manifold,
The coating tool according to claim 1, wherein a height of the rectifying unit perpendicular to the extending direction is reduced as the height of the rectifying unit is separated from the supply port in the extending direction. It is an application tool as described in any one of Claims 1-5,
The rectifying part is composed of a plurality of blade parts divided in the extending direction in the manifold,
A plurality of pin members are provided corresponding to each of the blade portions, and each blade portion is individually deformed by these pin members. It is an application tool as described in any one of Claims 1-6,
The coating tool, wherein the through hole of the head member and the pin member are screwed together.

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