JP2001162201A - Coating equipment of coating agent and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use relatively simple equipment so that coating work of a coating agent can be conducted with relatively simple procedure. SOLUTION: A substrate that is a work to be coated with the coating agent and that is placed on a suction plate 24 can be carried to the fixed straight direction by sliding a slide guide 23. A roller 28 is installed on carrying lines so that it may be free to rotate. A PET film on which the surface is coated with the coating agent is wrapped on a face of the roller. The substrate is moving along the carrying lines by means of frictional force of the rotation caused by rotating the roller 28 at the fixed position with a motor 29 and rolling the roller 28 on the surface of the substrate while pressing under pressure. The coating agent on the PET film is transferred on the surface of the substrate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for applying a coating material such as an adhesive to a work.

[0002]

2. Description of the Related Art When manufacturing an ink jet head unit of a conventional ink jet printer, it is necessary to uniformly apply a small amount of adhesive to a substrate having fine grooves constituting the ink jet head unit.

In such a case, if a technique of directly applying an adhesive to a surface to which the adhesive is applied with a jig or the like, or a technique of applying the adhesive with a screen printing or a roll coater, is used, the adhesive is placed in a fine groove. An obstacle such as blocking the groove due to the flow-in occurs. Therefore, for example, in the technology disclosed in Japanese Patent Application Laid-Open No. 08-192104, a concave portion for storing the adhesive that has flowed out is provided in the vicinity of the application area of the adhesive to solve the above-described problem caused by the adhesive that has flowed out. The occurrence is prevented.

[0004]

However, Japanese Patent Application Laid-Open No. Hei 08
The technology disclosed in JP-A-192104 and the like has a problem that the structure of the device becomes complicated and the work of applying the adhesive becomes complicated.

In the case where an adhesive is applied to a work having a fine groove such as a substrate constituting the above-mentioned ink jet head unit, the groove on the work surface can be formed by any of the above-mentioned conventional techniques. There is also a problem that the coating agent is not uniformly applied to the boundary between the end portion and the flat portion.

SUMMARY OF THE INVENTION It is an object of the present invention to use a relatively simple apparatus and to perform a coating operation of a coating agent by a relatively simple operation.

Another object of the present invention is to make it possible to evenly apply the coating agent to the boundary between the end of the groove and the flat surface even when the coating agent is applied to a work in which fine grooves are formed. It is to be.

[0008]

According to a first aspect of the present invention, there is provided a transport path capable of transporting a workpiece to be coated with a coating material in a predetermined linear direction, and a rotatable roller is provided on the transport path. Is provided, a film having a coating material formed on the surface thereof is wound and mounted on the roller surface of the roller, and the roller is rotated at a fixed position to press the roller against the surface of the work. The coating device is an application device for applying the coating material that transfers the coating material on the film to the surface of the work by moving the work on the transport path by frictional force due to the rolling.

Therefore, the adhesive is transferred from the film to the work by a relatively simple operation of rotating the roller by using a relatively simple apparatus configuration, and a small amount of the adhesive is uniformly applied to the work. Becomes possible.

[0010] According to a second aspect of the present invention, in the coating agent applying apparatus according to the first aspect, the roller has irregularities formed on the surface thereof.

Therefore, even when the coating agent is applied to a work in which fine grooves are formed, the coating agent can be uniformly applied to the boundary between the end of the groove and the flat surface on the work surface.

According to a third aspect of the present invention, in the apparatus for applying a coating agent according to the second aspect, when the coating material on the film comes into contact with the workpiece, the groove direction of the unevenness on the roller surface is set to the workpiece. It forms an acute angle or a right angle with the groove direction of the groove formed thereon.

Therefore, compared with the case where the groove direction of the unevenness on the roller surface is parallel to the groove direction of the groove formed on the work, the coating is also applied to the boundary between the end of the groove and the flat surface on the work surface. The agent can be applied uniformly.

According to a fourth aspect of the present invention, a film having a coating material formed on its surface is wound and mounted on a roller surface, and a work to be coated with the coating material is conveyed in a predetermined linear direction. By rotating a roller provided on a possible conveyance path, and rolling the roller by pressing against the surface of the work, the work is moved on the conveyance path by frictional force due to this rolling, and the film This is a method of applying a coating agent for transferring the above coating agent onto the surface of the work.

Therefore, it is possible to transfer the adhesive from the film to the work and apply a small amount of the adhesive uniformly to the work by using a relatively simple apparatus configuration and by simply rotating the rollers. Becomes

According to a fifth aspect of the present invention, in the method for applying a coating agent according to the fourth aspect, the roller having an uneven surface is used as the roller.

Therefore, even when the coating agent is applied to the work in which the fine grooves are formed, the coating agent can be uniformly applied to the boundary between the end of the groove and the flat surface on the surface of the work.

According to a sixth aspect of the present invention, in the method for applying a coating agent according to the fifth aspect, when the coating material on the film comes into contact with the workpiece, the groove direction of the irregularities on the roller surface is set to the workpiece. The groove is formed so as to form an acute angle or a right angle with the groove direction of the groove formed thereon.

Therefore, compared to the case where the groove direction of the unevenness on the roller surface is parallel to the groove direction of the groove formed on the work, the coating is also applied to the boundary between the end of the groove and the flat surface on the work surface. The agent can be applied uniformly.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below.

The work to be worked in the embodiment of the present invention is, for example, a substrate constituting an ink jet head unit of an ink jet printer.

FIG. 1 is a perspective view of such an ink jet head unit 1. As shown in FIG. 1, in the inkjet head unit 1, an inkjet head 2 and a drive circuit board 6 are integrally mounted on a base substrate 7 made of a metal plate or the like. Power, control signals, and the like are input to the inkjet head unit 1 via a cable 8. The electrode terminals of the inkjet head 2 and the lead terminals of the drive circuit board 6 are connected by a predetermined connection means. A nozzle plate 4 is attached to the tip of the ink-jet head 2, and nozzles 4a for discharging ink are formed. Substrate 3 provided with ink chamber (not shown) of inkjet head 2
A lid member 9 for closing the ink chamber is attached to the upper part of the printer. At both ends, ink supply pipes 5 and 5 for supplying ink to the inkjet head 2 are attached, and have a structure communicating with the ink chamber via an ink flow path.

FIG. 2 is a partially enlarged perspective view of a substrate 3 which is a main constituent member of the ink jet head 2. This substrate 3 serves as the work. As shown in FIG. 2, a plurality of fine grooves 12, 12,... Having a predetermined width and depth are formed in the adhesive application surface 11 of the substrate 3 at a predetermined pitch in parallel with the width direction. Have been. These grooves 12, 12, ... are formed such that the groove search gradually becomes shallower from a fixed position in the direction of the other end of the substrate 3, and there is no step or the like from the application surface 11. The pitch, the depth, the width, and the length of the groove 12 are set by values that are designed and determined in relation to the ink discharge specifications of the inkjet head 2 and driving conditions. The groove 12 of the substrate 3 in this example has a pitch of 160 μm, a width of 80 μm, a depth of 250 μm, and a groove length of 5 mm from the end.
Formed. The substrate 3 is manufactured by using a dicing saw on a ceramic substrate with a groove pitch of 160 μm and a width of 8 μm.
This can be performed by forming a plurality of U-shaped fine grooves of 0 μm.

Next, a description will be given of a coating agent coating apparatus according to an embodiment of the present invention. FIG. 3 is a perspective view of the application device 21 for the application agent. Applicator 2 for this coating agent
Reference numeral 1 denotes an apparatus for applying a coating agent such as an adhesive to a work such as the substrate 3 described above. As shown in FIG. 3, the coating agent application device 21 includes a plate-shaped transfer table 22. A slide guide 23, which is a pair of rails whose longitudinal direction is the length direction, is formed on the transfer table 22. On the slide guides 23, a suction plate 24 is placed. This suction plate 24
Is slidable on the slide guides 23, 23. A work is placed on the suction plate 24, and a moving path by sliding of the suction plate 24 is a transfer path that can transfer the work in a predetermined linear direction. The transfer table 22 can be moved up and down by a lifting mechanism 25 having a well-known configuration, and can be adjusted to a desired height by a height adjustment dial 26 and fixed at that position. FIG. 8 is a side view showing the positional relationship between the suction plate 24 and the roller 28 when the height of the transfer table 22 is adjusted to a predetermined height.

On the moving path, a coating agent coating device 2
A roller 28 supported at both ends by one housing 27 and rotatable at a fixed position is provided. The roller 28 is moved so that its longitudinal direction is orthogonal to the moving path.
It is arranged facing. The surface portion of the roller 28 is formed of a flexible natural rubber having a JIS hardness of 50 degrees, for example, and the roller 28 is rotated by a motor 29.
* A sheet 30 is fixed to the surface of the roller 28 as exemplified in a partially enlarged longitudinal sectional view in FIG. As the sheet 30, for example, DAIART S-150 manufactured by Mitsubishi Rayon can be used. This sheet 30
As shown in FIG. 4, peaks 31 and valleys 3 extending straight on the surface are provided.
The unevenness is formed such that 2 appears continuously. For example, the mountain 31 has an isosceles triangle in vertical cross section and a vertex angle of 95.
Degrees. The height from the bottom surface of the sheet 30 to the top of the peak 31 is 150 μm, and the height from the bottom surface of the sheet 30 to the bottom of the valley 32 is 125 μm. The pitch between the peaks 31 is 50 μm.

A PET film 33 is removably wound on the sheet 30 of the roller 28. This PE
The T film 33 has a viscosity of 3000 as a coating agent.
Adhesive that is CP (for example, DSA7111 manufactured by Shikoku Chemicals)
Is formed using a screen printing machine so as to have a thickness of about 20 μm.
Such a PET film 33 is wound around a roller 28, and both ends thereof are fixed by film fixing levers 34, 34. The film fixing levers 34, 34
The PET film 33 is attracted toward the axial center of the roller 28 by the elastic force of a spring (not shown), and the PET film 33 is supported on the roller 28 by the elastic force.

The coating apparatus 21 having the above configuration
The substrate 3 is placed as a work on the suction plate 24, and the height of the transfer table 22 is adjusted by the height adjustment dial 26. Then, manually, the suction plate 2
When the substrate 3 on 4 is brought into contact with the roller 28 and the roller 28 is rotated by the motor 29, the roller 28 is pressed against the surface of the substrate 3 and rolls. Then, the suction plate 24 slides on the slide guides 23 and 23 by the frictional force due to the rolling, and the substrate 3 moves on the transport path in a predetermined linear direction while being placed on the suction plate 24, and the PET film is moved. The coating material on 33 is transferred to the surface of the substrate 3.

In this case, the rotation speed of the roller 28 is 5 rpm.
The result of the transfer performed under the conditions of m and printing pressure of 150 μm is shown in FIG. Further, as a comparative example, the surface state of the substrate 3 when the same coating agent was applied to the substrate 3 under the same conditions as above except that the PET film 33 was wound directly around the roller 28 without mounting the sheet 30 on the roller 28. An enlarged photograph is shown in FIG.

In the example of FIG. 6, the coating agent is seen white, and the background of the substrate 3 is seen black. In the example of FIG. 6, it can be seen that the adhesive is not applied sufficiently uniformly on the substrate 3. In particular, the grooves 12, 12,...
The vertical groove 12 is continuously formed in the portion 3).
The coating agent is not sufficiently applied to the boundary between the end of the flat portion and the flat portion (upper part of FIG. 6). The part that looks white at this boundary has a good coating of the coating agent because the electrode pattern exists under the coating agent.

On the other hand, in the example of FIG. 5, it can be seen that a small amount of the coating agent is applied relatively uniformly on the substrate 3. In particular, the boundary between the ends of the grooves 12, 12,... (The vertical grooves 12 are continuously formed in about 2/3 of the lower part of FIG. 5) and the plane part (about the upper part of FIG. 5). It can be seen that the coating agent is sufficiently applied to (１ ／ part). In addition, there was no inflow of the coating material into the groove 12 on the substrate 3, and good transferability of the coating material could be obtained also on the pillar upper surface near the rise of the groove.

In the example of FIG. 5, the fine grooves 12 on the substrate 3
The transfer of the coating material is performed as described above so that the groove direction of 12,... And the groove direction of the unevenness formed by the peaks 31 and the valleys 32 on the surface of the roller 28 are parallel.
.. Are applied when the coating material is transferred such that the groove direction of the fine grooves 12, 12,... On the substrate 3 is perpendicular to the groove direction of the irregularities formed by the peaks 31 and valleys 32 on the surface of the roller 28. ,
3 is an enlarged photograph of a surface state of a substrate 3.

In the example shown in FIG. 5, the columnar surface between the grooves 12 is not partially coated with the coating agent.
In the example of FIG. 7, it can be seen that such a situation does not occur and the coating agent is favorably applied. In this case, the direction of the fine grooves 12, 12,...
If the groove direction of the unevenness formed by the valleys 32 and the valleys 32 forms an acute angle, even if they are not perpendicular to each other, the application agent paste is more improved than in the case of being parallel as in the example of FIG.

Note that, instead of forming the concavities and convexities formed by the peaks 31 and the valleys 32, a roller 28 in which 400 conical protrusions having a height of 150 μm are formed per 2.54 cm is used, as shown in FIG. The same good results as those described above were obtained. In this case, the projection shape may be a triangular pyramid or a quadrangular pyramid. Further, in the above-described embodiment of the present invention, an example in which the present invention is applied to the manufacture of an ink-jet head unit has been described. However, the present invention is not limited to this. The present invention can be applied to a case where a coating agent is applied to various materials.

[0034]

According to the first aspect of the present invention, the adhesive is transferred from the film to the work by a relatively simple operation using only a relatively simple device and rotating the roller, and a very small amount of adhesive is transferred. The agent can be uniformly applied to the work.

According to a second aspect of the present invention, in the apparatus for applying a coating agent according to the first aspect, even when the coating agent is applied to a work in which fine grooves are formed, the end of the groove on the surface of the work can be removed. The coating agent can be evenly applied to the boundary with the flat surface.

According to a third aspect of the present invention, in the apparatus for applying a coating agent according to the second aspect, the groove direction of the unevenness on the roller surface is parallel to the groove direction of the groove formed on the work. In comparison, the coating agent can be evenly applied to the boundary between the end of the groove and the flat surface on the work surface.

According to a fourth aspect of the present invention, the adhesive is transferred from the film to the work by a simple operation using only a relatively simple device and rotating the roller, and a small amount of the adhesive is applied to the work. It becomes possible to apply uniformly.

According to a fifth aspect of the present invention, in the method for applying a coating agent according to the fourth aspect, even when the coating agent is applied to a work in which fine grooves are formed, the end of the groove on the surface of the work can be removed. The coating agent can be evenly applied to the boundary with the flat surface.

According to a sixth aspect of the present invention, in the method for applying a coating agent according to the fifth aspect, the groove direction of the unevenness on the roller surface is parallel to the groove direction of the groove formed on the work. In comparison, the coating agent can be evenly applied to the boundary between the end of the groove and the flat surface on the work surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of an ink-jet printer head using a substrate used as a work in one embodiment of the present invention.

FIG. 2 is a partially enlarged perspective view of the substrate.

FIG. 3 is a perspective view of a coating agent application device according to an embodiment of the present invention.

FIG. 4 is a partially enlarged longitudinal sectional view of a sheet formed on a roller of the coating agent applying device.

FIG. 5 is an enlarged photograph of the surface of the substrate when the coating agent is applied to the substrate using the coating agent coating device.

FIG. 6 is an enlarged photograph of a substrate surface when a coating agent is applied to the substrate by a conventional technique.

FIG. 7 is an enlarged photograph of the surface of the substrate when the coating agent is applied to the substrate using the coating agent coating device.

FIG. 8 is a side view showing a positional relationship between a suction plate and a roller when a transfer table is adjusted to a predetermined height by the coating material applying apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Applicator application device 3 Work 12 Groove 28 Roller 31, 32 Irregularity 33 Film

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Maho Takashima 33rd Shinisogo-cho, Isogo-ku, Yokohama-shi, Kanagawa Prefecture F-term in Toshiba Production Technology Center (reference) 2C057 AF93 AG16 AP02 AP14 AP22 AP25 AP57 AP75 AP77 AP90 AQ10 4D075 AC43 AC93 CA47 DA06 DB01 DC19 EA35 4F040 AA12 AB01 AC01 BA16 CB06 CB40 DA14

Claims (6)

[Claims] 1. A transport path capable of transporting a work to be coated with a coating material in a predetermined linear direction, a rotatable roller provided on the transport path, and a coating material formed on a surface. A film is wound around and attached to the roller surface of the roller, and the roller is rotated at a fixed position and the roller is pressed against the surface of the work to be rolled. Is moved on the transport path to transfer the coating agent on the film to the surface of the work. 2. The application device for an application agent according to claim 1, wherein the roller has irregularities formed on a surface thereof. 3. When the coating material on the film comes into contact with the work, the groove direction of the unevenness on the roller surface forms an acute angle or a right angle with the groove direction of the groove formed on the work. Item 3. An application device for an application agent according to Item 2. 4. A film having a coating material formed on its surface is wound around and mounted on a roller surface, and is provided on a transport path capable of transporting a workpiece to be coated with the coating material in a predetermined linear direction. By rotating the roller, the roller is pressed against the surface of the work and rolled, the work is moved on the transport path by frictional force due to the rolling, and the coating agent on the film is moved to the work surface. Method of applying a coating agent to be transferred to the surface of the surface. 5. The method according to claim 4, wherein the roller has a surface having irregularities formed thereon. 6. When the coating material on the film comes into contact with the work, the groove direction of the irregularities on the roller surface is at an acute angle or a right angle with the groove direction of the groove formed on the work. The method for applying a coating agent according to claim 5, which is: