JP2014180598A - Coating tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating tool in which internal pressure of a manifold can be made uniform from an initial stage of a coating work, coating accuracy can be increased, and the accuracy can be stably maintained.SOLUTION: There is provided a coating tool 1 in which a plurality of head members 2 are adjacently arranged, and which coats coating liquid on an object to be coated through a manifold 4 formed between adjacent head members 2 and a slit 3 which is communicated to the manifold 4 and open to a tip side of the head member 2. The manifold 4 extends along an extending direction of the head members 2. A supply port 16 which supplies coating liquid to the manifold 4, and a rectifying plate 15 which is arranged at least at a position corresponding to the supply port 16 and both end portions along the extending direction are rotatably and pivotally supported by the head member 2 are provided in the manifold 4.

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 the cross-sectional shape thereof is, for example, a circle or a trapezoid (rectangle). In general, the manifold includes a type that penetrates the head member in the extending direction and a non-penetrated hollow type. A supply port for supplying the coating liquid to the manifold is opened in the manifold, and the supply port is disposed at a central portion or an end portion along the extending direction of the manifold.

  In the application tool disclosed in Patent Document 1 below, the adjustment member is detachably inserted into the manifold so that the cross-sectional shape of the gap formed between the inner surface of the manifold and the outer surface of the adjustment member can be changed. The coating liquid is uniformly discharged onto the object to be coated.

JP-A-7-185434

  However, in the coating tool of Patent Document 1, since the cross-sectional shape of the adjustment member is substantially the same along the extending direction, it is difficult to obtain a uniform coating amount, and the coating accuracy is improved. There was room for.

Specifically, in the configuration of Patent Document 1, when the supply port is arranged in the central portion of the manifold, the filling of the coating liquid into the central portion is quick and the filling of the coating liquid into both ends is slow. Due to this time difference, an internal pressure difference occurs in the manifold. 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 coating amount (coating thickness) to the coated object is the width direction of the coated object (that is, the direction in which the slit extends). ) Was difficult to keep constant.
Note that, as shown in FIG. 3B of Patent Document 1, when the central portion along the extending direction of the adjustment member is made smaller in diameter than other portions, the above-described problem is likely to become more prominent.

  Further, as a result of coating with the adjustment member inserted into the manifold, if the amount of application along the extending direction from the slit to the object to be coated is not uniform, the adjustment member is removed from the head member. It was necessary to remove and replace the adjustment member with another shape, and adjustment work was difficult and time-consuming.

The above-mentioned problem relating to the uniformity of the coating amount is likely to occur in the initial stage of coating (coating start), but other than that, for example, when the viscosity of the coating liquid is medium / high viscosity (when the viscosity is high) ), The flow rate of the coating solution supplied from the manifold to the slit is likely to be non-uniform, and the coating accuracy cannot 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.

  The present invention has been made in view of such circumstances, and an application tool that can make the internal pressure of the manifold uniform from the initial stage of coating, increase the application accuracy, and stably maintain the accuracy. It is intended to provide.

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 And a rectifying plate that is disposed at least at a position corresponding to the supply port and is rotatably supported at both ends along the extending direction by the head member.

  According to the coating tool of the present invention, since the rectifying plate is disposed in the manifold corresponding to the supply port, the coating liquid flowing into the manifold from the supply port is applied to the rectifying plate, and the manifold It is also supplied to a part other than the supply port in the inside. That is, the rectifying plate 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 existing 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 current plate, 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 rectifying plate is rotatably supported by the head member, even if the application amount discharged from the slit to the object to be applied becomes uneven in each part along the extending direction ( That is, even when the coating accuracy cannot be sufficiently ensured), the coating accuracy can be improved by a simple operation of rotating the current plate.
That is, for example, even when the coating amount from the slit portion corresponding to the supply port along the extending direction in the slit is larger than the coating amount from the slit portion corresponding to the portion other than the supply port, rectification is performed. By rotating the plate, it is possible to prevent liquid feeding to the slit portion corresponding to the supply port, and thereby the coating liquid can be adjusted to easily flow to the slit portion corresponding to the portion other than the supply port. . Further, even when the application amount from the slit portion corresponding to the supply port is smaller than the application amount from the slit portion corresponding to the portion other than the supply port, the current plate is rotated to correspond to the supply port. It can be adjusted so that the coating liquid can easily flow into the slit portion.

Specifically, for example, for a medium / high viscosity coating solution, the coating solution is fed away from the vicinity of the supply port in the extending direction by rotating the current plate and approaching the supply port. It is possible to easily make the internal pressure of the manifold uniform along the extending direction. That is, since the distance from the current plate to the supply port can be appropriately adjusted by rotating the current plate, the application accuracy can be easily increased in accordance with the viscosity of various coating solutions.
As a result, 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 of the slit, and the coating film thickness at the beginning of coating becomes uniform. In application of the low-viscosity coating liquid, the rectifying plate may be brought close to the supply port until the start of coating, and the rectifying plate may be separated from the supply port after the internal pressure of the manifold becomes uniform.

  As described above, in the present invention, the rectifying plate is rotated according to the property (viscosity) of the coating liquid, and the relative position with respect to the supply port is appropriately set, so that the coating accuracy on the coating object is stably maintained at high quality. Can be secured. In addition, even during coating, since the coating accuracy can be maintained at a high quality by rotating the rectifying plate, it is not necessary to stop the coating apparatus, and productivity is improved.

  As described above, the coating tool of the present invention can make the internal pressure of the manifold uniform from the initial stage of coating, increase the coating accuracy, and stably maintain the accuracy.

  In the coating tool of the present invention, the rectifying plate extends along the extending direction, and a radial width perpendicular to the rotation axis of the rectifying plate is spaced from the supply port in the extending direction. It is good also as it is made small as it does.

  In this case, since the gap (distance) between the rectifying plate and the inner surface of the manifold increases as the distance from the supply port increases in the extending direction, the liquid feeding amount to the slit portion corresponding to the supply port is suppressed, Supplying the coating liquid to the slit portion corresponding to the portion other than the supply port can be realized with a simple configuration.

  Moreover, the coating tool of this invention WHEREIN: The said supply port is good also as opening to the center part in alignment with the said extension direction of the said manifold.

  In this case, since the supply port is opened at the center of the manifold, it is easy to suppress the internal pressure difference at both ends of the manifold, and thus the effect of increasing the application accuracy described above can be easily and stably performed. It will be obtained more prominently.

  In the coating tool of the present invention, one of the radial ends perpendicular to the rotation axis of the rectifying plate may be disposed so as to be slidable or close to the inner surface of the manifold.

  In this case, the gap between one of the both ends along the radial direction of the current plate and the inner surface of the manifold can be eliminated or reduced, so that the coating can be applied through the gap between the other of the both ends and the inner surface of the manifold. The liquid is easily fed into the manifold so as to have a desired balance along the extending direction.

  In the coating tool of the present invention, an angle adjustment mechanism capable of setting a position around the rotation axis of the current plate with respect to the head member may be provided.

  In this case, the position around the rotation axis of the rectifying plate relative to the head member can be set by the angle adjusting mechanism, so that the adjustment to make the coating amount uniform by rotation of the rectifying plate is easy, and the adjusted rectifying plate and the supply port are adjusted. The relative position (distance) with respect to can be stably maintained. Therefore, the above-described operational effects can be achieved reliably and stably.

  Moreover, in the coating tool of this invention, it is good also as providing the deflection amount adjustment mechanism which presses and curls the flat-shaped baffle plate which can be elastically deformed toward the inner side of the said extension direction.

In this case, the rectifying plate can be bent (bent) by the bending amount adjusting mechanism so that the front and back surfaces thereof are formed into a convex curved surface shape or a concave curved surface shape, thereby separating the coating liquid from the supply port in the extending direction. The flow rate of liquid feeding in the direction can be adjusted.
That is, for example, when the current plate is bent so as to protrude toward the supply port, the coating liquid flowing from the supply port is separated from the supply port along the convex curved surface (front and back surfaces) of the current plate. It becomes easy to be washed away more in the direction. Further, when the current plate is bent so as to recede in a direction away from the supply port (on the opposite side to the supply port), the plate is formed into a flat plate shape by the action of the concave curved surface (front and back surfaces) of the current plate. Compared to the case of the current plate, the coating liquid is less likely to flow away from the supply port.
Further, the rectifying plate can be restored and deformed into a flat plate shape by releasing the pressing by the deflection amount adjusting mechanism.
From the above, in addition to the adjustment by the rotation of the current plate described above, the adjustment range for making the coating amount uniform becomes finer (fine adjustment is possible), and can be widely applied to various coating liquids.

  According to the coating tool of the present invention, the internal pressure of the manifold can be made uniform from the initial stage of coating, the coating accuracy can be increased, and the accuracy can be stably maintained.

It is a sectional side view (longitudinal sectional view) showing an application tool concerning a 1st embodiment of the present invention. It is an AA cross section of FIG. 1, and is a figure which shows the external appearance of a baffle plate. It is (a) front view and (b) side view of the baffle plate of 1st Embodiment. It is (a) top view of the baffle plate of 1st Embodiment, (b) It is a side view. It is the (a) top view and the (b) side view which show the state which changed the baffle plate of 1st Embodiment. It is a sectional side view (longitudinal sectional view) showing an application tool concerning a 2nd embodiment of the present invention. It is a BB cross section of Drawing 6, and is a figure showing the appearance of a current plate. It is the (a) front view and (b) side view of the baffle plate of 2nd Embodiment. It is (a) top view and (b) side view of the baffle plate of 2nd Embodiment. It is the (a) top view and (b) side view which show the state which changed the baffle plate of 2nd Embodiment.

(First embodiment)
Hereinafter, application tool 1 concerning a 1st 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 and FIG. 2, the application tool 1 of 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 a communication with 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 the present specification, the longitudinal direction 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 referred to as the width direction W of the coating tool 1, and these extending directions. A direction perpendicular to L and the width direction W is referred to as a 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, 1 and the upper side in FIG. 2, and the side opposite to the direction in which the slit 3 is opened to the outside is called the base end side (the base end side of the head member 2, the lower side in FIGS. 1 and 2).

  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 rectangular shape in a longitudinal sectional view (side sectional view) shown in FIG. In the head member 2, the outer surface 7 facing the outer side in the width direction W and the inner surface (butting surface) 8 facing the inner side in the width direction W each have a planar shape perpendicular to the width direction W. The inner surfaces 8 of a pair of adjacent head members 2 are arranged to face each other with a gap as described later, and a slit 3 is defined in the gap.

The slit 3 is a distribution space (gap) for the coating liquid defined by the inner surfaces 8 of the pair of head members 2 and the pair of shims 22 disposed 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 is opened toward the distal end side of the head member 2, while on the proximal end side of the head member 2 and both sides in the extending direction L. There is no opening. Specifically, in FIG. 2, an area (an area located between the pair of shims 22) corresponding to the extending direction L of the manifold 4 is located on the distal end side (the upper side in FIG. 2) of the manifold 4. It is a slit 3. 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.
In the present embodiment, the inner surfaces 8 of a pair of adjacent head members 2 are opposed to each other with a gap defining the slit 3 in the manifold 4 and a region on the distal end side of the shaft insertion hole 14 described later. On the other hand, in the area | region of the base end side of the manifold 4 and the shaft insertion hole 14, it mutually contact | abuts. Further, the pair of head members 2 are connected to each other by a not-shown bolt or the like.

Further, 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 of the head member 2 is a flat surface perpendicular to the height direction H, and the end on the inner side in the width direction W of the front end surface 10 is more distal than the portion other than the end. The edge portions 6 project toward the side, and the edge portions 6 of the pair of head members 2 face each other with a gap defining the slit 3 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.

  Further, as shown in FIG. 2, both side surfaces 11, 12 facing the extending direction L in the head member 2 are planes perpendicular to the extending direction L. A shaft insertion hole 14 (groove 13), which will be described later, is opened on each of the side surfaces 11 and 12, and a shaft support member 17 is disposed at a position corresponding to the shaft insertion hole 14 on each of the side surfaces 11 and 12. Has been.

  In FIG. 1, a semicircular slot 5 having a semicircular cross section that is recessed from the inner surface 8 and extends in the extending direction L is formed in the center portion in the height direction H of the inner surface 8 of the head member 2. The manifold 4 having a circular cross section is formed by the pair of head members 2 having the slots 5 facing each other in the width direction W.

  As shown in FIG. 2, the slot 5 is opened in a rectangular shape on the inner surface 8 of the head member 2, and both end portions along the extending direction L of the slot 5 are on both side surfaces 11 of the head member 2. , 12 in the extending direction L (that is, on the center side in the extending direction L). In addition, a groove 13 having a semicircular cross section that is recessed from the inner surface 8 and extends in the extending direction L is formed from both ends of the slot 5 to both side surfaces 11 and 12, and the pair of head members 2 are mutually connected. By arranging the grooves 13 to face each other in the width direction W, a shaft insertion hole 14 having a circular cross section is formed. The inner diameter of the shaft insertion hole 14 is set smaller than the inner diameter of the manifold 4.

  The manifold 4 extends along the extending direction L of the head member 2. In the manifold 4, a supply port 16 for supplying the coating liquid to the manifold 4 and at least a position corresponding to the supply port 16 are arranged, and both end portions along the extending direction L are rotated by the head member 2. A current plate 15 that is pivotally supported is provided.

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, a liquid supply path 21 that connects the outer surface 7 and the slot 5 is formed only in one head member 2A 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. In the example shown in the figure, the supply port 16 opens at the center along the height direction H of the manifold 4. 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.

The rectifying plate 15 extends along the extending direction L, and the width in the radial direction (hereinafter referred to as the radial direction) orthogonal to the rotation axis O of the rectifying plate 15 extends from the supply port 16 in the extending direction L. The distance is reduced as the distance increases.
Specifically, the rectifying plate 15 has a long, substantially rectangular plate shape and is accommodated in the manifold 4 and the extending direction L of the plate body 18 (the same direction as the rotation axis O). A shaft 19 that extends from both ends toward the outside in the extending direction L and is rotatably supported by the shaft support member 17 of the head member 2 is provided. Then, as the radial width of the plate 18 (the length in the direction perpendicular to the rotation axis O and also perpendicular to the plate thickness direction) is separated from the supply port 16 in the extending direction L. It is getting smaller gradually.

  As shown in FIG. 2, both end portions along the extending direction L of the plate body 18 are disposed so as to be slidable or close to both end surfaces along the extending direction L of the slot 5. Further, one of both ends of the plate body 18 along the radial direction (the lower end of the plate body 18 in FIG. 2) is disposed so as to be slidable or close to the inner surface (inner peripheral surface) of the manifold 4. Yes. The other end (the upper end of the plate 18 in FIG. 2) of both ends of the plate 18 along the radial direction is disposed away from the inner surface of the manifold 4, and the other end is in contact with the inner surface of the manifold 4. There is a gap between which the coating liquid can flow.

  Specifically, both ends of the plate body 18 along the extending direction L in the front view of the current plate 15 shown in FIG. 3A (when the front and back surfaces facing the plate thickness direction of the plate body 18 are viewed from the front). The one end in the radial direction (the lower end of the plate 18 in FIG. 3A) 18a extends linearly so as to form three sides of the plate 18 having a rectangular shape. The other end 18b in the radial direction of the plate 18 (the upper end of the plate 18 in FIG. 3A) extends from the center along the extending direction L of the plate 18 in the extending direction L. As it goes outward, it gradually extends inward in the radial direction. Due to the outer shape of the plate 18, the radial width of the plate 18 is reduced as the plate 18 is separated from the supply port 16. In the present embodiment, in the front view shown in FIG. 3A, the other end 18b in the radial direction of the plate 18 is a curved shape (convex curve) that is convex outward in the radial direction. Formed).

Further, the plate 18 is elastically deformable, and in a state where the pressing force by the bending amount adjusting mechanism 25 described later does not act on the plate 18, FIGS. 3B and 4A ( As shown in b), it has a flat plate shape.
As shown in FIG. 1, the plate 18 is rotatable around the rotation axis O in the manifold 4 (rotation direction indicated by a double arrow T in the figure). 4 is coaxial with the central axis. 1, the plate body 18 is positioned on the rotation axis O, and the other end 18b in the radial direction of the plate body 18 is connected to the slit 3 and the liquid on the inner surface of the manifold 4. It arrange | positions between the supply paths 21 (supply port 16).

  In FIG. 2, the shaft 19 has an outer diameter equal to or slightly smaller than the inner diameter of the shaft insertion hole 14, and is inserted into the shaft insertion hole 14. The end portion of the shaft 19 opposite to the plate 18 (the outer end portion in the extending direction L) is directed outward in the extending direction L from the side surfaces 11 and 12 of the head member 2 and the shaft support member 17. It is protruding.

  An angle adjusting mechanism 20 capable of setting a position around the rotation axis O of the rectifying plate 15 with respect to the head member 2 is provided at an outer end portion in the extending direction L of the shaft 19. In the present embodiment, the angle adjusting mechanism 20 is screwed into the angle adjusting portion 23 composed of a plurality of planes formed by cutting the end portion of the shaft 19 in parallel with the rotation axis O and the end portion of the shaft 19. And a nut member 24 capable of restricting the rotation of the shaft 19 relative to the head member 2 by being screwed to a predetermined level or more.

  That is, the angle adjusting unit 23 rotates the rectifying plate 15 around the rotation axis O with respect to the head member 2 to adjust the position thereof, and then the nut member 24 is screwed into the rectifying plate with respect to the head member 2. 15 can be fixed, and this prevents the rectifying plate 15 from unintentionally rotating during coating or the like.

  Further, the shaft support member 17 is provided with a bending amount adjusting mechanism 25 that presses and curls the rectifying plate 15 inward in the extending direction L. In the present embodiment, the bending amount adjusting mechanism 25 is rotatable about the rotation axis O with respect to the main body portion of the shaft support member 17, and the amount of movement in the rotation direction is determined by the shaft 19 relative to the head member 2. A deflection amount adjusting screw member 26 that can be converted into a moving amount in the direction of the rotation axis O and engages with the shaft 19 is provided.

  That is, the shaft 19 can move toward the inner side (center side) in the extending direction L with respect to the head member 2 by rotating the deflection amount adjusting screw member 26. By moving the shaft 19 in this way, the plate 18 is elastically deformed and bent as shown in FIGS. 5 (a) and 5 (b). Specifically, the plate 18 is bent so that a central portion along the extending direction L thereof becomes a convex shape or a concave shape protruding or retreating toward the plate thickness direction of the plate 18, and FIG. In the plan view (upper view or lower view) shown in FIG.

  Further, the shaft 19 can be moved toward the outside in the extending direction L with respect to the head member 2 by rotating the bending amount adjusting screw member 26 in the direction opposite to the above. Thereby, the elastically deformed plate 18 is restored and deformed into a flat plate shape as shown in FIGS.

In addition, as a direction which curves the baffle plate 15 by the bending amount adjustment mechanism 25, in FIG. 1, the direction which bends so that the center part of the extending direction L of the board 18 may protrude toward the supply port 16 side, and the said It is possible to set the central portion to be bent so as to be retracted to the side opposite to the supply port 16 (to project to the slit 3 side).
In addition, after adjusting the bending amount (bending amount) of the rectifying plate 15 by the bending amount adjusting screw member 26, a restricting portion that can restrict the rotation of the bending amount adjusting screw member 26 with respect to the main body portion of the shaft support member 17 is provided. Also good.

  According to the coating tool 1 of the present embodiment described above, since the rectifying plate 15 is disposed in the manifold 4 corresponding to the supply port 16, the coating liquid that has flowed into the manifold 4 from the supply port 16. Is supplied to a portion other than the supply port 16 in the manifold 4 while being applied to the rectifying plate 15. That is, the rectifying plate 15 makes it easy for the coating liquid to be fed to a portion other than the supply port 16 in the manifold 4, so that an increase in the internal pressure of the manifold 4 near the supply port 16 is suppressed. At the same time, the manifold 4 can be made uniform along the extending direction. 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 16 is arranged at the central portion in the extending direction L of the manifold 4, the filling of the coating liquid into the central portion is fast and the filling of the coating liquid into both ends is slow. Due to this time difference, an internal pressure difference occurs in the manifold 4, so it is difficult to ensure coating accuracy. On the other hand, according to the present embodiment, it becomes possible to fill the entire inside of the manifold 4 with the rectifying plate 15 uniformly and substantially simultaneously, and to suppress the internal pressure difference of the manifold 4. Therefore, the coating accuracy can be sufficiently increased from the initial stage of coating (beginning of coating).

Further, since the rectifying plate 15 is rotatably supported by the head member 2, the amount of application discharged from the slit 3 to the object to be applied is not uniform in each part along the extending direction L. Even (that is, even when the application accuracy cannot be sufficiently ensured), the application accuracy can be improved by a simple operation of rotating the flow straightening plate 15.
That is, for example, the coating amount from the slit 3 portion corresponding to the supply port 16 along the extending direction L in the slit 3 is larger than the coating amount from the slit 3 portion corresponding to the portion other than the supply port 16. Even in this case, by rotating the rectifying plate 15, it is possible to prevent liquid feeding to the slit 3 portion corresponding to the supply port 16, whereby the slit 3 corresponding to the portion other than the supply port 16 is applied to the coating liquid. It can be adjusted to make it easier to flow to the part. In addition, even 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 rectifying plate 15 is rotated, Adjustment can be made so that the coating liquid can easily flow into the slit 3 corresponding to the supply port 16.

Specifically, for example, for a medium / high-viscosity coating liquid, the coating liquid is sent away from the vicinity of the supply port 16 in the extending direction L by rotating the rectifying plate 15 closer to the supply port 16. The internal pressure of the manifold 4 can be easily made uniform along the extending direction L. That is, since the distance from the rectifying plate 15 to the supply port 16 can be appropriately adjusted by rotating the rectifying plate 15, the application accuracy can be easily increased corresponding to the viscosity of various coating solutions.
This makes it possible to reduce the mouth opening phenomenon at the central portion in the extending direction L of the slit 3 in the application of the coating solution having a high viscosity, and the coating film thickness at the beginning of coating becomes uniform. . In application of the low-viscosity coating liquid, the rectifying plate 15 may be kept close to the supply port until the start of application, and the rectifying plate 15 may be separated from the supply port 16 after the internal pressure of the manifold becomes uniform. .

Specifically, when the aforementioned rectifying action by the rectifying plate 15 is particularly required depending on the type of coating liquid, as described in the present embodiment, the other end 18b of the plate 18 of the rectifying plate 15 is connected to the manifold. 4 is disposed opposite to the portion between the slit 3 and the supply port 16 on the inner surface of 4 (that is, the portion located obliquely above and to the left of the rotation axis O in FIG. 1). It is preferable because the effect can be remarkably easily obtained.
Further, when the above-described rectifying action by the rectifying plate 15 is not so necessary, such as application of a coating liquid that can easily ensure application accuracy, the other end 18 b of the plate 18 of the rectifying plate 15 is connected to the manifold 4. It is also possible to dispose it facing a portion other than the portion between the slit 3 and the supply port 16 on the inner surface.

  As described above, in this embodiment, the rectifying plate 15 is rotated according to the property (viscosity) of the coating liquid, and the relative position with respect to the supply port 16 is appropriately set, so that the coating accuracy on the coating object is high. It can be secured stably. Further, even during coating, since the coating accuracy can be maintained at a high quality by rotating the current plate 15, it is not necessary to stop the coating apparatus, and the productivity is improved.

  As described above, the coating tool 1 of the present embodiment can make the internal pressure of the manifold 4 uniform from the initial stage of coating, increase the coating accuracy, and stably maintain the accuracy.

In the present embodiment, the rectifying plate 15 extends along the extending direction L, and the radial width perpendicular to the rotation axis O of the rectifying plate 15 is separated from the supply port 16 in the extending direction L. Therefore, the following effects can be obtained.
That is, the gap (distance) between the current plate 15 and the inner surface of the manifold 4 increases as the distance from the supply port 16 in the extending direction L increases, so that the amount of liquid fed to the slit 3 corresponding to the supply port 16 is suppressed. However, the coating liquid can be supplied to the slit 3 corresponding to the portion other than the supply port 16 with a simple configuration.

  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.

  In addition, one (one end 18a) of the both ends in the radial direction orthogonal to the rotation axis O of the rectifying plate 15 is disposed so as to be slidable or close to the inner surface of the manifold 4, so that the rectifying plate 15, and the gap between the one end 18 a of the manifold 4 and the inner surface of the manifold 4 can be eliminated or reduced. It becomes easy to feed the liquid so as to achieve a desired balance along the extending direction L.

In addition, since the application tool 1 is provided with the angle adjusting mechanism 20 that can set the position of the rectifying plate 15 around the rotation axis O with respect to the head member 2, the following effects can be obtained.
That is, since the position around the rotation axis O of the rectifying plate 15 with respect to the head member 2 can be set by the angle adjusting mechanism 20, the adjustment to make the coating amount uniform by the rotation of the rectifying plate 15 is easy and the rectified after adjustment The relative position (distance) between the plate 15 and the supply port 16 can be stably maintained. Therefore, the above-described operational effects can be achieved reliably and stably.

In addition, since the application tool 1 is provided with a bending amount adjusting mechanism 25 that presses and curls the elastically deformable flat plate rectifying plate 15 inward in the extending direction L, the following effects are provided. Play.
That is, the rectifying plate 15 can be bent (bent) by the bending amount adjusting mechanism 25 so that the front and back surfaces thereof are formed into a convex curved surface shape or a concave curved surface shape, whereby the coating liquid is extended from the supply port 16 in the extending direction L. It is possible to adjust the flow rate of liquid feeding in the direction of separation.
Specifically, for example, when the current plate 15 is bent so as to protrude toward the supply port 16, the coating liquid flowing in from the supply port 16 follows the convex curved surface (front and back surfaces) of the current plate 15. As a result, the flow rate is more likely to flow away from the supply port 16. In addition, when the current plate 15 is bent so as to be retracted in a direction away from the supply port 16 (on the side opposite to the supply port 16), a flat plate is formed by the action of the concave curved surface (front and back surfaces) of the current plate 15. The coating liquid is less likely to flow away from the supply port 16 than in the case of the rectifying plate 15 formed into a shape.
Moreover, the rectifying plate 15 can be restored and deformed into a flat plate shape by releasing the pressing by the bending amount adjusting mechanism 25.
From the above, in addition to the adjustment by the rotation of the rectifying plate 15 described above, the adjustment range for uniformizing the coating amount becomes finer (fine adjustment is possible), and can be widely applied to various coating liquids. .

(Second Embodiment)
Next, the coating tool 31 which concerns on 2nd Embodiment of this invention is demonstrated with reference to drawings.
In addition, about the structure similar to the above-mentioned embodiment, the description is abbreviate | omitted using the same name or the same code | symbol, and only a different point is demonstrated below.

  As shown in FIGS. 6 and 7, in the coating tool 31 of the present embodiment, a pair of head members 2A and 2C are arranged adjacent to each other, and only one of the head members 2A and 2C is one head member 2A. The slot 5 is formed in the other head member 2C, and the slot 5 is not formed in the other head member 2C. As a result, the manifold 34 has a semicircular cross section.

  The rectifying plate 35 can slidably contact one end 38a of both ends in the radial direction perpendicular to the rotation axis O of the plate 38 with the planar inner surface 8 of the head member 2C among the inner surfaces of the manifold 34. Or placed close to each other. One end 38 a of the plate 38 is disposed on the rotation axis O. The shape of the other end 38b of the plate 38 is the same as that of the other end 18b of the plate 18 described in the above embodiment.

  As shown in FIGS. 8 to 10, the radial width of the rectifying plate 35 decreases as the distance from the center of the extending direction L corresponding to the supply port 16 increases toward the outside of the extending direction L. This point is the same as that of the rectifying plate 15 described in the above-described embodiment. However, in the rectifying plate 35 of the present embodiment, one end 38a of the plate body 38 is disposed on the rotation axis O. Therefore, the width (plate width) along the radial direction is smaller than the plate 18 of the rectifying plate 15 described above.

Further, the plate body 38 of the present embodiment is also elastically deformable in the same manner as the plate body 18 of the above-described embodiment, and in a state where the pressing force by the bending amount adjusting mechanism 25 is not acting on the plate body 38. 8 (b) and FIGS. 9 (a) and 9 (b) have a flat plate shape. Then, by rotating the bending amount adjusting screw member 26 of the bending amount adjusting mechanism 25 and applying a pressing force to the plate body 38, the plate body 38 is as shown in FIGS. 10 (a) and 10 (b). Curved.
Also in the present embodiment described above, the same operational effects as those of the above-described embodiments can be obtained.

  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 tools 1 and 31 are provided with the pair of head members 2, but the present invention is not limited to this. That is, the coating tools 1 and 31 include three or more head members 2 and these are arranged in the width direction W, and the slit 3 and the manifold 4 are disposed between the adjacent head members 2. , 34 may be formed, and rectifying plates 15, 35 may be disposed in the manifolds 4, 34, respectively.
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 opened toward the upper side of the application tools 1 and 31 in FIGS. 1, 2, 6, and 7. However, the present invention is not limited to this. That is, the installation postures of the application tools 1 and 31 with respect to the object to be applied are not limited to those described in the above-described embodiment, and for example, the slit 3 may be opened downward.

  Further, in the example shown in FIGS. 2 and 7, it is described that the shaft support member 17 that pivotally supports the rectifying plates 15 and 35 is directly disposed on the side surfaces 11 and 12 of the head member 2. However, the present invention is not limited to this. For example, side plates are disposed at both ends along the extending direction L of the head member 2, and the shaft support member 17 is disposed on these side plates. May be. Further, the shaft support member 17 may not be provided, and the shaft 19 of the rectifying plates 15 and 35 may be rotatably supported with respect to the head member 2 by slidingly contacting the shaft insertion hole 14.

  Further, the slot 5 of the head member 2 has a semicircular cross section, and in the first embodiment, the manifold 4 in which the slots 5 of the pair of head members 2A and 2B are arranged to face each other has a circular cross section. In the second embodiment, the manifold 34 has a semicircular cross section formed by the slot 5 of one head member 2A and the planar inner surface 8 of the other head member 2C. Is not to be done. That is, the cross-sectional shape of the manifolds 4 and 34 may be a polygonal shape or an elliptical shape other than the circular shape and the semicircular shape.

  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 manifolds 4 and 34, specifically, the extending direction L of the manifolds 4 and 34. However, the present invention is not limited to this. That is, the supply port 16 may be open to, for example, one end or the other end along the extending direction L of the manifolds 4 and 34. In this case, the plate bodies 18 and 38 of the rectifying plates 15 and 35 are The width in the radial direction is maximized at a portion corresponding to the supply port 16 and is decreased as the distance from the supply port 16 is extended in the extending direction L, so that the coating liquid is separated from the supply port 16 in the extending direction L. It is formed so that liquid can be fed in the direction to be made.

Further, as shown in FIGS. 2 and 7, in the above-described embodiment, the length along the extending direction L of the plate bodies 18 and 38 of the rectifying plates 15 and 35 is the extending direction L of the manifolds 4 and 34. That is, both ends in the extending direction L of the plates 18 and 38 are arranged so as to be slidable or close to both end surfaces of the extending direction L of the slot 5. However, the present invention is not limited to this.
That is, the plate members 18 and 38 of the rectifying plates 15 and 35 are disposed at positions corresponding to at least the supply port 16 in the manifolds 4 and 34, and the coating liquid flowing from the supply port 16 extends from the supply port 16. For example, both ends in the extending direction L of the plate bodies 18 and 38 of the rectifying plates 15 and 35 are connected to the manifolds 4 and 34 because the rectifying action is required so that the liquid can be fed in the direction to be separated in the existing direction L. The both ends of the extending direction L may be spaced apart from the inner side of the extending direction L.
That is, the shape of the plate bodies 18 and 38 of the rectifying plates 15 and 35 is not limited to the shape described in the above-described embodiment, as long as the desired rectifying action of the coating liquid can be obtained. For example, instead of the plate bodies 18 and 38 of the rectifying plates 15 and 35 having a long rectangular shape extending in the extending direction L, a long polygonal shape or an oval shape may be used. Further, the plate bodies 18 and 38 may not extend in the extending direction L.

  In the above-described embodiment, the other ends 18b and 38b of the plate bodies 18 and 38 are viewed from the front and back surfaces of the plate bodies 18 and 38 (the plate bodies 18 and 38 are viewed from the plate thickness direction). Although it is formed in a curved shape (convex curved shape) convex outward in the radial direction orthogonal to the rotation axis O, it is not limited to this. That is, for example, when the front and back surfaces of the plates 18 and 38 are viewed from the front, the other ends 18b and 38b are formed in a V-shape (convex V-shape) that is convex outward in the radial direction. It may be. Moreover, the other ends 18b and 38b may extend in a straight line shape or a broken line shape toward the radial direction gradually or stepwise in the extending direction L in this front view.

  In the above-described embodiment, the plate bodies 18 and 38 are elastically deformable. However, the present invention is not limited to this. In this case, when using the plates 18 and 38 shown in FIG. 5 and FIG. 10, what is prepared by curving into the illustrated shape in advance may be prepared.

  A plurality of supply ports 16 may be opened in the manifolds 4 and 34. In this case, a plurality of plate bodies 18 and 38 may be formed on the rectifying plates 15 and 35 so that the liquid can be fed from each supply port 16 in a direction in which the coating liquid is separated in the extending direction L.

  Further, in the above-described embodiment, the angle adjusting mechanism 20 includes the angle adjusting unit 23 that is flattened by notching the end of the shaft 19, the nut member 24 that is screwed to the end of the shaft 19, and However, the present invention is not limited to this. That is, instead of this, for example, the angle adjusting mechanism 20 includes a screw hole that communicates the outer surface 7 of the head member 2 and the shaft insertion hole 14 and a pin member that is screwed into the screw hole. A configuration in which a position around the rotation axis O of the rectifying plates 15 and 35 with respect to the head member 2 can be set by abutting the tip of the pin member screwed into the shaft 19 on the outer peripheral surface of the shaft 19 may be adopted.

In the above-described embodiment, the example in which the bending amount adjusting mechanism 25 is disposed on the pair of shaft support members 17 that pivotally support the pair of shafts 19 in the rectifying plates 15 and 35 has been described. Is not to be done.
Further, the bending amount adjusting mechanism 25 is rotatable about the rotation axis O with respect to the main body of the shaft support member 17, and the amount of movement in the rotation direction is set in the direction of the rotation axis O of the shaft 19 relative to the head member 2. Although it has said that it has the deflection amount adjustment screw member 26 which can be converted into the moving amount toward the direction, it is not limited to this. That is, instead of this, for example, the deflection amount adjusting mechanism 25 is brought into contact with an end surface facing the outside in the extending direction L of the shaft 19 and the end surface can be pushed inward in the extending direction L. May have a part.

  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, 31 Application tool 2 Head member 3 Slit 4, 34 Manifold 15, 35 Current plate 16 Supply port 18a, 38a One end 20 Angle adjustment mechanism 25 Deflection amount adjustment mechanism L Extension direction O Rotation axis

Claims (6)

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,
In the manifold,
A supply port for supplying a coating liquid to the manifold;
An application tool, comprising: a rectifying plate that is disposed at least at a position corresponding to the supply port and on which the both end portions along the extending direction are rotatably supported by the head member. The application tool according to claim 1,
The rectifying plate extends along the extending direction,
An application tool, wherein a width in a radial direction orthogonal to the rotation axis of the current plate is reduced as the distance from the supply port increases in the extending direction. The application tool according to claim 1 or 2,
The said supply port is opened in the center part along the said extension direction of the said manifold, The application tool characterized by the above-mentioned. The application tool according to any one of claims 1 to 3,
One of the radial ends perpendicular to the rotation axis of the current plate is disposed so as to be slidable or close to the inner surface of the manifold. It is an application tool as described in any one of Claims 1-4,
An application tool, characterized in that an angle adjustment mechanism capable of setting a position around the rotation axis of the current plate with respect to the head member is provided. It is an application tool as described in any one of Claims 1-5,
An application tool, characterized in that a bending amount adjusting mechanism is provided for pressing and bending the elastically deformable flat plate rectifying plate inward in the extending direction.

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