JP2004261678A - Coating application tool and coating applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating application tool whose side faces with a slot defined are hardly susceptible to damage and which facilitates the work to wash the side faces and is light in weight. <P>SOLUTION: In the coating application tool, a tool body 10 constituted by combining head section elements 12 and 13 is included and a pocket 15 extending to a longitudinal direction of the tool body 10 is demarcated by a hollow groove 11 formed on at least the one side face of the opposite side faces of the elements 12 and 13. The side faces existing nearer the leading front side of the tool body 10 than the pocket 15 are formed as slot faces 17a and 19a defining the slot communicatively connected with the leading front surface of the tool body 10 and the coating liquid supplied to the pocket 15 is discharged through the slot 14. The entire surface constituting at least the slot faces 17a and 19a is formed of material having the hardness higher than the hardness of the contents of the coating liquid. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coating tool and a coating device that apply a coating liquid to a surface of a member to be coated such as a sheet-shaped member or a panel-shaped member.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a coating tool having a slot through which a coating liquid passes is used as a coating tool mounted on a coating apparatus that performs a coating operation such as forming a coating layer by applying a coating liquid thinly and uniformly on the surface of a sheet-like member. Is used. As such an application tool, there is an application tool provided with an application head (tool main body) 1 as shown in FIG. 4, and the application head 1 is a sheet-like member S that travels in a traveling direction indicated by an arrow A in the figure. Is formed in an elongated shape extending in the width direction of the sheet-shaped member S, and is disposed below the sheet-shaped member S so that the front end thereof can be slidably contacted with the sheet-shaped member S with its front end facing upward. I have. (For example, refer to Patent Document 1.)
[0003]
The coating head 1 defines a slot 4 by arranging the side surfaces 2a and 3a of the pair of head unit structures 2 and 3 with a certain gap, and defines the slot 4 in the longitudinal direction of the side surfaces 2a and 3a. Grooves 5 and 6 formed toward the upper surface define a pocket 7. The slot 4 is opened at the tip end surface of the coating head 1, and a supply port (not shown) for supplying a coating liquid is provided in communication with the center of the pocket 7. Then, in order to form the interval between the slots 4 with high precision, the side surfaces 2a and 3a are finished by polishing. Further, in the figure, the slot 4 and the pocket 7 are opened to the side of the coating head 1, but the ends of the slot 4 and the pocket 7 are sealed. The coating liquid supplied from the supply port in the coating operation spreads in the longitudinal direction of the coating head 1 by filling the pocket 7 and is discharged from the tip of the coating head 1 through the slot 4. The discharged coating liquid is applied to the surface (lower surface) of the traveling sheet-shaped member S, and a coating layer is formed.
[0004]
As a coating liquid used in a coating tool having such a coating head 1, a color paste for a liquid crystal display, a resist agent for a color filter, or the like is used. These coating liquids include carbon fiber and glass fiber. And other hard inclusions. Further, in order to prevent clogging of the coating liquid or when using different types of coating liquids, it was necessary to disassemble the coating tool and clean the slots 4 and the pockets 7. This cleaning operation is performed, for example, by rubbing the coating liquid adhering to the side surfaces 2a and 3a defining the slot 4 with a cloth or the like containing a solvent. In addition, when such an application tool is used for an application operation of applying a color filter resist agent to a display substrate, an application tool having a wide application width is required with an increase in size of a display.
[0005]
[Patent Document 1]
JP-A-62-241574 (FIG. 1)
[0006]
[Problems to be solved by the invention]
By the way, in the above application tool, when the content of the application liquid is harder than the side surface defining the slot, the content causes a streak-like scratch on the side surface, or the content pierces the side surface. There was a problem that it would. In addition, there is a risk that the contents may damage the side surface even in the cleaning operation of the application tool, and there is a problem that the cleaning operation becomes difficult due to the application liquid entering the damaged portion. . Further, there is a problem that fine streaks are formed on the surface of the coating film layer due to damage to the side surface. Conventionally, an edge member made of a cemented carbide is attached to the tip portion of the stainless steel head portion structure to improve the wear resistance of the tip portion. There was a region between the member and the pocket where a slot was defined by the side surface of the head component, and damage in this region adversely affected the cleaning operation and the formation of the coating layer. In addition, there is a problem that the coating tool must be increased in size in order to increase the coating width of the coating tool, and the coating apparatus must be increased in size in order to cope with an increase in weight accompanying the increase in size.
[0007]
The present invention has been made under such a background, and an object of the present invention is to provide a light-weight application tool in which a side surface defining a slot is hardly damaged and an operation of cleaning the side surface is easy. And
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention proposes the following means.
The application tool according to the present invention includes a tool main body configured by combining a plurality of head part structures, and the tool is formed by a concave groove formed on at least one of the opposed side surfaces of the head part structure. A pocket extending in the longitudinal direction of the main body is defined, and the side surface located on the distal end side of the tool main body from the pocket is a slot surface that defines a slot communicating with the distal end surface of the tool main body. In the application tool in which the application liquid supplied to the pocket is discharged through the slot, at least the entire surface serving as the slot surface is formed of a material having a higher hardness than the content of the application liquid. Features.
Preferably, the material is a cemented carbide, ceramics, or stainless steel.
[0009]
In the coating tool according to the present invention, at least the entire surface serving as the slot surface is formed of a material having a higher hardness than the content of the coating solution, so that the hard material included in the coating solution forms streaks on the slot surface. And the inclusions are prevented from sticking into the slot surface. By improving the durability against damage on the entire surface of the slot as described above, damage to the slot surface is prevented even in the cleaning operation, and the coating liquid does not enter the damaged portion, so that the cleaning operation can be easily performed. Can be. Also, formation of fine streaks on the surface of the coating film layer is prevented. By using a cemented carbide, ceramics, or stainless steel as a material for forming the slot surface, such effects can be obtained better.
[0010]
Further, the application tool according to the present invention is the application tool described above, wherein the head portion constituting body includes a slot member forming the slot surface, and a support member to which the slot member is attached. The specific gravity of the material of the support member is equal to or smaller than the specific gravity of the material of the slot member.
In the application tool of the present invention, the slot member forming the slot surface is mounted on the support member to form the head portion constituting body, and the material of the support member is the same specific gravity as the material of the slot member, or smaller than the material of the slot member. Since the material has a specific gravity, it is possible to reduce the weight of the application tool as a whole. For example, by forming the head part structure with a cemented carbide slot member and an aluminum alloy support member, even if the application tool has the same outer shape as the conventional one, the entire head part structure is made of a cemented carbide. Thus, a lighter application tool can be obtained than in the case of forming with.
[0011]
Further, the coating apparatus according to the present invention is configured to apply the coating liquid to the surface of the member to be coated by moving the coating liquid to the member to be coated while moving the coating liquid in one direction relative to the member to be coated. In the apparatus, any one of the application tools described above is mounted.
Since the coating apparatus of the present invention is equipped with any of the above-mentioned coating tools, fine streaks are not formed on the surface of the coating layer, and a uniform coating layer is formed as compared with the conventional coating apparatus. can do. Further, even when the size of the application tool is increased, the weight is reduced as described above, so that the size of the application apparatus can be suppressed.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view of a coating head (tool main body) 10 of one embodiment used for a coating tool viewed from a longitudinal direction, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a BB cross section of FIG. FIG. The coating head 10 has a slot 14 and a pocket formed by a head part structure 12 having a concave groove 11 formed in the longitudinal direction and having the same cross-sectional shape (semicircular shape) and a head part structure 13 having no concave groove. 15 are defined and configured. The head member 12 has a slot member 17 mounted on the support member 16 in which the concave groove 11 is formed so as to protrude from the distal end edge 11a of the concave groove 11 to the distal end side from the distal end surface 16a of the support member 16. It is configured. Further, the slot member 19 is attached to the support member 18 so that the head portion constituting body 13 protrudes from the position facing the base end edge 11b of the concave groove 11 to the distal end side from the distal end surface 18a of the support member 18. It is configured.
[0013]
The support members 16 and 18 are angular members made of an aluminum alloy, and are provided with inclined front end surfaces 16a and 18a so as to protrude toward the slot 14 from the outer surfaces 16b and 18b facing each other toward the slot 14. ing. The slot members 17 and 19 are plate-like members made of cemented carbide and having a substantially rectangular cross section, and the base end portion of the slot member 19 is formed so as to face the concave groove 11. 19 is formed long in the proximal direction. The slot members 17 and 19 have side surfaces facing each other as slot surfaces 17a and 19a defining the slot 14, and the slot surfaces 17a and 19a are arranged so as to have a constant interval.
[0014]
As shown in FIG. 3, a connecting member 21 having a female screw portion is fixed to a side surface facing the opposite side of the slot surface 17a, and a side surface facing the opposite side of the slot member 19 is vertically aligned. The connecting member 22 is fixed to two places. Further, a bolt hole 23 is provided from the distal end surface 16a of the support member 16 to a mounting surface 16d on which the slot member 17 is mounted, and the mounting member 16d side of the bolt hole 23 can accommodate the connecting member 21. I have. As shown in FIG. 2, a plurality of bolt holes 23 are formed in a line at equal intervals along the longitudinal direction of the support member 16, and the connecting member 21 is fixed to the slot member 17 so as to correspond to the bolt holes 23. Each connecting member 21 is housed in the bolt hole 23, and the connecting member 24 inserted from the end face 16 a side is screwed into the female screw portion of the connecting member 21, so that the slot member 17 is attached to the supporting member 16. You. Similarly, the support member 18 is also provided with bolt holes 25 and 26 communicating with the mounting surface 18d, and the connection member 22 fixed to the slot member 19 is used to connect the support member 18 with the connection bolts 27 and 28. , A slot member 19 is mounted. The support members 16 and 18 are connected to each other by the connecting bolts 20 so that the inner side surfaces 16c and 18c located closer to the base end than the concave groove 11 of the support members 16 and 18 are in close contact with each other.
[0015]
As described above, since the head members 12 and 13 are provided with the slot members 17 and 19 made of cemented carbide, the entire surface of the slot 14 is formed by the slot surfaces 17a and 19a made of cemented carbide. Will be defined. Further, by mounting the slot members 17 and 19 as described above, the mounting means for mounting the slot members 17 and 19 such as connecting bolts does not appear on the slot surfaces 17a and 19a. The pocket 15 is defined by the concave groove 11 and the base end portion of the slot member 19 facing each other.
[0016]
The coating tool provided with the coating head 10 formed as described above is mounted on a coating device and used for a coating operation. In the coating operation, a coating liquid is supplied from a coating device, and the coating liquid fills the pockets 15 and spreads in the longitudinal direction of the coating head 10, passes through the slot 14, and the leading end of the coating head 10, that is, the opening end of the slot 14. And is applied to the sheet-like member S (see FIG. 4).
[0017]
In such a coating operation, even if a hard material such as carbon fiber or glass fiber is contained in the coating liquid, the slot surfaces 17a and 19a are formed of a cemented carbide, so that damage is caused. Can be suppressed. Further, in the cleaning work of the slot surfaces 17a and 19a, damage due to inclusions can be suppressed, and since the coating liquid does not enter the damaged portion as in the related art, the cleaning work can be easily performed. In addition, since the durability is improved and the damage is not generated, fine streaks are prevented from being formed on the surface of the coating layer formed by the applied coating liquid. Also, compared to the case where the edge member made of cemented carbide is attached only to the tip portion as in the related art, the entire surface defining the slot 14 is formed of cemented carbide, which is described above. Such an effect can be obtained favorably.
[0018]
Further, since the head members 12 and 13 are formed by mounting the hard metal alloy slot members 17 and 19 on the aluminum alloy support members 16 and 18, the above-described effects can be obtained and the coating is performed. The weight of the head 10 as a whole can be reduced. That is, it is possible to configure the coating head 10 which is lighter than the case where the entire head part constituting bodies 12 and 13 are formed of a cemented carbide in order to obtain the above-described effects. By reducing the weight in this manner, the coating head 10 can be configured to be lighter even if it is larger than the conventional one, so that the head unit structures 12, 13 are formed long in the longitudinal direction, and the coating width is wide. In the coating head 10, the effect of suppressing bending due to its own weight, preventing deformation of the slot 14 in the coating width direction, and obtaining an effect of uniformly applying the coating liquid is obtained.
[0019]
In addition, the rigidity of the coating apparatus to which the coating head 10 is mounted can be designed to be low, and a small motor can be used as a driving unit for driving the coating head 10. That is, even if the coating head 10 is increased in size, an increase in the size of the coating apparatus can be suppressed, and the cost can be reduced. In addition, since the weight of the head component members 12 and 13 is reduced, it is possible to easily disassemble the application head 10 during the cleaning operation and handle the head component members 12 and 13 during the cleaning operation. For example, there is no need for a handling device or the like for gripping the head component members 12, 13, and the cleaning operation can be performed in a short time.
[0020]
In the present embodiment, the material of the slot members 17 and 19 is assumed to be a cemented carbide. However, any material having a hardness higher than that of the content of the application liquid may be used. For example, ceramics or stainless steel may be used. You may. The material of the support members 16 and 18 can be reduced in weight if it has the same specific gravity as the material of the slot members 17 and 19 or a small specific gravity. For example, stainless steel, duralumin, ceramics, cermet, resin, etc. May be. The cermet preferably does not contain TiN. In addition, by forming a coating head having two or more slots using three or more head part constituting bodies, a coating tool capable of simultaneously forming a plurality of coating layers on the surface of the sheet-like member S is provided. The present invention may be used. The member to be coated is not limited to the sheet-shaped member S. For example, the present invention may be applied to a coating tool that applies a coating liquid to a panel-shaped member such as an electronic board. Alternatively, the application tool may be configured to move with respect to the panel-like member.
[0021]
【The invention's effect】
As described above, according to the coating tool according to the present invention, at least the entire surface serving as the slot surface is formed of a material having a higher hardness than the content of the coating liquid, thereby preventing damage to the slot surface. And the washing operation can be easily performed.
Further, by using a cemented carbide, ceramics, or stainless steel as a material forming the slot surface, such an effect can be obtained more favorably.
Further, since the supporting member is formed of a material having the same specific gravity or a smaller specific gravity as the material of the slot member, the weight can be reduced even when the size of the application tool is increased.
Further, since the coating device of the present invention is equipped with any of the coating tools described above, it is possible to prevent fine streaks from being formed on the surface of the coating layer to be formed, Can be prevented from increasing in size.
[Brief description of the drawings]
FIG. 1 is a side view of a tool main body used for a coating tool according to an embodiment of the present invention.
FIG. 2 is a right side view of the tool main body shown in FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 2;
FIG. 4 is a perspective view showing a conventional tool main body.
[Explanation of symbols]
10 Tool body (coating head)
DESCRIPTION OF SYMBOLS 11 Concave groove 12, 13 Head part structure 14 Slot 15 Pocket 16, 18, Support member 17, 19 Slot member 17a, 19a Slot surface

Claims (4)

A tool body configured by combining a plurality of head part structures is provided, and a pocket extending in a longitudinal direction of the tool body is formed by a concave groove formed on at least one of the opposed side surfaces of the head part structure. And the side surface located on the tip side of the tool main body from the pocket is a slot surface that defines a slot communicating with the front end surface of the tool main body. In a coating tool in which liquid is discharged through the slot,
An application tool, wherein at least the entire surface serving as the slot surface is formed of a material having a higher hardness than the content of the application liquid. The application tool according to claim 1,
The coating tool, wherein the material is a cemented carbide, ceramics, or stainless steel. The application tool according to claim 1 or claim 2,
The head portion structure includes a slot member forming the slot surface and a support member to which the slot member is attached, and a specific gravity of a material of the support member is a specific gravity of a material of the slot member. An application tool characterized by being less than or equal to. In a coating apparatus that applies a coating liquid to a surface of a member to be coated by moving in one direction relative to the member to be coated while discharging the coating liquid to the member to be coated,
A coating apparatus, comprising the coating tool according to claim 1.

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