JP2024066472A - Positioning jig and manufacturing method of glass substrate using positioning jig - Google Patents

Abstract

To provide a positioning jig capable of shortening a time required for height adjustment step and a horizontal position adjustment step of a nozzle that jets coating liquid to an object to be coated and shortening an attachment time, and a manufacturing method of a glass substrate using the positioning jig.SOLUTION: In a positioning jig 30 of a spray nozzle 11 for spray coating, a groove 33c that fits to the spray nozzle 11 for spray coating is formed in a placement table 33. The positioning jig 30 has: a base 31; and brackets 32A, 32B that are erected from the base 31 and to which the placement table 33 is connected. The brackets 32A, 32B has a height adjustment screw 44 and a height adjustment screw fixation table 32f as a height adjustment mechanism that adjusts a height of the placement table 33.SELECTED DRAWING: Figure 4

Description

The present invention relates to a positioning jig and a method for manufacturing a glass substrate using the positioning jig.

Conventionally, when a glass substrate is used as a cover member, an anti-glare film may be provided on the glass substrate. One example of an anti-glare film is a silica film formed from a silica precursor (see Patent Document 1).

In the process of attaching the anti-glare film to the glass substrate, a coating agent for forming the anti-glare film is applied to the glass substrate, and then the coating agent is dried (heated). The method of applying the coating agent is preferably a spray application method, and a nozzle such as a well-known two-fluid nozzle or one-fluid nozzle can be used for the spray application.
For example, when using a two-fluid nozzle, the higher the spray pressure, the smaller the droplets will be, and the larger the amount of liquid, the larger the droplets will be. In order to adjust the droplet size, it is necessary to adjust the vertical distance between the nozzle and the coating surface on the glass substrate. Conventionally, when performing a film formation process, a sample of the glass substrate to be coated was placed in a film formation chamber, a nozzle was attached, and the nozzle height was adjusted. The nozzle was also adjusted in the horizontal direction.
In addition, depending on the type of glass substrate to be coated, the nozzle may need to be changed. When changing the nozzle, the nozzle must be temporarily attached in the height confirmation process, and any deviation in the height direction must be visually confirmed and the height adjusted again. Then, with the height adjusted, the nozzle must be permanently attached and fixed. A similar process was also required to check the horizontal position. Therefore, the conventional height adjustment process and horizontal position adjustment process required a lot of labor from the workers and took a long time for the preparation process.

JP 2005-038288 A

The present invention was made in consideration of such current problems, and aims to provide a positioning jig and a method for manufacturing glass substrates using the positioning jig that can adjust the height and horizontal position of a nozzle that sprays coating liquid to form an antiglare film or antifingerprint film on a substrate, particularly a plate-shaped substrate such as a glass substrate, thereby shortening the installation time.

The problem that the present invention aims to solve is as described above, and the means for solving this problem will be explained next.

The positioning jig for a spray nozzle for spray coating according to aspect 1 of the present invention is characterized in that the mounting base is formed with a recess into which the spray nozzle for spray coating fits.

With this configuration, the spray nozzle for spray coating can be fitted into the recess, making it easy to adjust the vertical and horizontal positions of the spray nozzle, shortening the installation time when replacing the spray nozzle.

In addition, in the positioning jig of aspect 2, in aspect 1, it is preferable that the recess is made of resin.

This configuration prevents the tip of the spray nozzle from being scratched when it is fitted into the recess.

In addition, the positioning jig of aspect 3 is the same as in aspect 1 or 2, and has a base and a bracket that stands upright from the base and to which the mounting table is connected, and it is preferable that the bracket has a height adjustment mechanism that adjusts the height of the mounting table.

This configuration makes it easy to adjust the height of the mounting table based on the base, shortening the installation time when replacing the spray nozzle.

In addition, in the positioning jig of aspect 4, in any one of aspects 1 to 3, it is preferable that the jig has multiple mounting tables.

This configuration allows multiple spray nozzles to be positioned in the vertical direction simultaneously, shortening the installation time when replacing spray nozzles.

In addition, in the positioning jig of aspect 5, in any one of aspects 1 to 4, it is preferable that a nozzle spacing adjustment mechanism is provided between the base and the bracket.

This configuration allows the spacing between the spray nozzles to be easily adjusted when positioning multiple spray nozzles, shortening the installation time when replacing spray nozzles.

The method for producing a spray-coated glass substrate according to aspect 6 of the present invention includes a preparation step of preparing a spray nozzle for spray coating, and a coating step of coating the glass substrate with a coating liquid after the preparation step, and is characterized in that the preparation step uses a positioning jig according to any one of aspects 1 to 5.

With this configuration, the vertical and horizontal positioning of the spray nozzle can be easily adjusted by using a positioning jig during the preparation process, shortening the installation time when replacing the spray nozzle.

In addition, in the method for manufacturing a glass substrate of aspect 7, it is preferable to position the spacing between the multiple spray nozzles for spray coating after positioning the multiple spray nozzles for spray coating in the height direction in aspect 6.

With this configuration, after completing the height adjustment, the horizontal position adjustment can be performed by positioning the spacing between the mounting tables.

In addition, in the glass substrate manufacturing method of aspect 8, in aspect 6 or aspect 7, it is preferable that a positioning jig is placed on the dummy substrate in the preparation step.

With this configuration, the preparation process can be performed without preparing a glass substrate, which shortens the installation time when replacing the spray nozzle.

The effects of the present invention are as follows:

The positioning jig of the present invention allows the spray nozzle for spray coating to be fitted into the recess, making it easy to adjust the vertical and horizontal positions of the spray nozzle, and shortening the installation time when replacing the spray nozzle.

In addition, according to the glass substrate manufacturing method of the present invention, the spray nozzle can be easily positioned by using a positioning jig in the preparation process, and the installation time when replacing the spray nozzle can be shortened.

1 is a schematic front view showing an overall configuration of a glass substrate manufacturing apparatus according to an embodiment of the present invention. 1 is a plan view showing a glass substrate manufacturing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram showing a control unit according to an embodiment of the present invention. FIG. 2 is a front view showing a positioning jig according to an embodiment of the present invention. FIG. 2 is a plan view showing a positioning jig according to an embodiment of the present invention. FIG. 4 is a front view showing a preparation step according to an embodiment of the present invention. FIG. 4 is a front view showing a coating step according to one embodiment of the present invention.

Next, an embodiment of the invention will be described. In each drawing referred to in the embodiment, components having substantially the same functions will be referred to by the same reference numerals. Also, the drawings referred to in the embodiment are schematic.

Figure 1 is a side view showing a glass substrate manufacturing apparatus 1 according to this embodiment. Also, Figure 2 is a plan view showing the glass substrate manufacturing apparatus 1.

The glass substrate manufacturing apparatus 1 shown in Figures 1 and 2 is an apparatus for manufacturing a film-coated glass substrate by forming an anti-glare film or anti-fingerprint film by a spray coating method on a glass substrate G flowing from upstream. The glass substrate G is a plate-shaped member, and the surface is spray-coated. Note that anti-glare coating agents such as silicon alkoxide, anti-fingerprint coating agents, water-repellent coating agents, etc. are used as coating liquids used in the spray coating method. In addition, although a glass substrate G is used as a coating target, this is not limited thereto, and for example, a ceramic plate, a resin plate, etc. may also be used.

The manufacturing device 1 is equipped with a spray nozzle 11. The spray nozzle 11 is a spray nozzle for spray coating, and is a nozzle that sprays the coating liquid over a wide area.

The spray nozzle 11 is connected to a coating liquid supply mechanism 12 shown in FIG. 1. The coating liquid supply mechanism 12 stores the coating liquid for forming a film. The coating liquid is supplied from the coating liquid supply mechanism 12 to the spray nozzle 11. The coating liquid is ejected from the spray nozzle 11 toward the glass substrate G. It is preferable that the spray nozzle 11 is capable of atomizing the coating liquid and supplying the atomized coating liquid onto the glass substrate G.

The manufacturing apparatus 1 is equipped with a moving mechanism 13 that moves the glass substrate G relative to the spray nozzle 11 along the X-axis direction. For example, as shown in FIG. 1, the moving mechanism 13 is composed of a plurality of transport rolls so that the glass substrate G can be moved along the X-axis direction. The moving mechanism 13 moves the glass substrate G relative to the spray nozzle 11 at a constant speed from the x1 side to the x2 side in the X-axis direction.

The spray nozzle 11 is connected to a scanning mechanism 14 shown in FIG. 2. This scanning mechanism 14 causes the spray nozzle 11 to scan back and forth across the glass substrate G along the Y-axis direction perpendicular to the X-axis direction. Specifically, the scanning mechanism 14 causes the spray nozzle 11 to scan back and forth between a position on the y1 side of the y1 end of the glass substrate G and a position on the y2 side of the y2 end of the glass substrate G, thereby applying atomized coating liquid to the entire surface of the glass substrate G.

In other words, the scanning mechanism 14 is a device that moves the spray nozzle 11 to the y1 side of the glass substrate G, then reverses the direction of movement and moves the spray nozzle 11 to the y2 side of the glass substrate G, repeating this reciprocating movement.

As shown in FIG. 3, the coating liquid supply mechanism 12, the moving mechanism 13, and the scanning mechanism 14 are connected to and controlled by the control unit 15. Specifically, the control unit 15 adjusts the flow rate of the coating liquid supplied from the coating liquid supply mechanism 12 to the spray nozzle 11. The amount of coating liquid applied to the glass substrate G is controlled by adjusting the flow rate of the coating liquid by the control unit 15. The control unit 15 controls the moving speed of the glass substrate G by the moving mechanism 13. The control unit 15 controls the scanning direction and scanning speed of the spray nozzle 11 by the scanning mechanism 14.

Next, the preparation step S01 for attaching the spray nozzle 11 for spray coating to the scanning mechanism 14 will be described with reference to FIGS.
In general, in the spray coating method, the spray position of the spray nozzle 11 with respect to the surface of the glass substrate G placed on the moving mechanism 13 is uniquely determined by the type of coating liquid and the type of the spray nozzle 11. If the spray position of the spray nozzle 11 with respect to the surface of the glass substrate G is not at a predetermined position, problems such as uneven coating and generation of uncoated surfaces occur.

Therefore, in the conventional preparation step S01, first, the actual glass substrate G was placed on the moving mechanism 13, and the distance from the spray nozzle 11 was measured. The spray nozzle 11 was temporarily attached to the scanning mechanism 14 by an operator who visually confirmed the approximate position, and then the spray nozzle 11 was positioned in the Y-axis direction. The height of the spray nozzle 11 was then adjusted by checking the height position relative to the actual glass substrate G and making adjustments for minor differences.

In contrast, in the present invention, a positioning jig 30 is used in the preparation step S01. Using the positioning jig 30, the spray nozzle 11 can be attached to the scanning mechanism 14 while the position of the spray nozzle 11 is fixed, thereby shortening the installation time.

Next, the positioning jig 30 will be described in detail with reference to FIGS.
The positioning jig 30 has a base 31, brackets 32A and 32B standing upright from the base 31, and a plurality of mounting tables 33 connected to the brackets 32A and 32B, respectively. In this embodiment, the base 31 is provided with two brackets 32A and 32B, but the number of brackets may be one, or three or more.

The base 31 is a rectangular parallelepiped member, and its bottom surface is formed to be parallel to the surface of the dummy substrate 100. The top surface of the base 31 is provided with recesses 31a and 31b for fitting and aligning the brackets 32A and 32B. In this embodiment, a first recess 31a for aligning the first bracket 32A and a second recess 31b for aligning the second bracket 32B are provided. The width in the X-axis direction of the first recess 31a is approximately the same as the length in the X-axis direction of the first bracket 32A. The length in the Y-axis direction of the first recess 31a is approximately the same as the length in the Y-axis direction of the base 31. The width in the X-axis direction of the second recess 31b is greater than the length in the X-axis direction of the second bracket 32B. The width in the Y-axis direction of the second recess 31b is shorter than the length in the Y-axis direction of the base 31.

A horizontal adjustment screw fixing base 31c is provided at the end of the base 31 in the X-axis direction, which is the end on the second recess 31b side. The horizontal adjustment screw fixing base 31c protrudes in the height direction from the upper surface of the base 31, and the horizontal adjustment screw fixing base 31c is provided with an insertion hole (not shown) for inserting the horizontal adjustment screw 41.

The brackets 32A and 32B are members that stand in a height direction perpendicular to the bottom surface of the base 31. The first bracket 32A is a rectangular parallelepiped member. The second bracket 32B has a rectangular parallelepiped standing member 32Ba and a support base portion 32Bb that protrudes in the X-axis direction from the rectangular parallelepiped standing member 32Ba. The support base portion 32Bb is provided with a fixing member long hole 32Bc into which a fixing member 42 for X-axis adjustment is inserted. In addition, an insertion hole (not shown) is provided on the end face of the standing member 32Ba of the second bracket opposite the support base portion 32Bb, for inserting the horizontal adjustment screw 41.

The first bracket 32A and the second bracket 32B are provided with multiple long holes. The long hole in the center of the brackets 32A and 32B in the Y-axis direction is the first long hole 32d for inserting the base portion 33a of the mounting base 33, and the long hole on the end side in the Y-axis direction is a fixing member long hole for inserting the fixing member 43.

A height adjustment screw fixing base 32f for fixing the height adjustment screw 44 is provided at the upper ends of the first bracket 32A and the second bracket 32B. The height adjustment screw fixing base 32f protrudes in the X-axis direction from the upper ends of the brackets 32A and 32B, and the height adjustment screw fixing base 32f has an insertion hole (not shown) for inserting the height adjustment screw 44.

The mounting base 33 is made of resin and has a nozzle gripping portion 33b that protrudes in the X-axis direction. The nozzle gripping portion 33b has a recess formed therein to fit with the spray nozzle 11. In this embodiment, the recess is formed by a groove 33c. The groove 33c is provided parallel to the Y-axis direction. Note that the mounting base 33 only needs to have the portion where the groove 33c is formed made of resin, and the other portions may be made of metal. Note that the recess is formed by the groove 33c, but is not limited to this. For example, the recess may be formed by an elongated hole. It is preferable that the elongated hole has a shape that allows the spray nozzle 11 to move parallel to the Y-axis direction when it is fitted with the spray nozzle 11.

As described above, the base 33a of the mounting base 33 is inserted into the first long hole 32d. The base 33a is provided with an insertion adjustment hole (not shown) for inserting the height adjustment screw 44. By rotating the height adjustment screw 44, the base 33a can be moved up and down relative to the height adjustment screw fixing base 32f.

Next, a procedure for attaching the spray nozzle 11 using the positioning jig 30 in the preparation step S01 will be described with reference to FIG.
First, the dummy substrate 100 is placed on the moving mechanism 13. The dummy substrate 100 is configured to have the same thickness as the glass substrate G, and is formed of a material having a lower density and higher toughness than the glass substrate G. In other words, it is formed of a material that is easier to handle and to place on the moving mechanism 13 than the actual glass substrate G. Note that the dummy substrate 100 may be formed of a material having a higher density and lower toughness than the glass substrate G, or the glass substrate G may be used, in order to reduce deformation due to repeated use. In addition, from the viewpoint of ease of handling, the area of the dummy substrate 100 may be smaller than that of the actual glass substrate G.

While the dummy substrate 100 is placed, the height of the mounting base 33 of the positioning jig 30 is adjusted to a predetermined position and fixed. That is, the distance between the base 33a of the mounting base 33 and the height adjustment screw fixing base 32f is adjusted by rotating the height adjustment screw 44. The heights of the mounting base 33 fixed to the first bracket 32A and the mounting base 33 fixed to the second bracket 32B can be adjusted separately. This makes it possible to adjust the position of the spray nozzle 11 to the desired height according to the type and shape of the spray nozzle 11.

The distance between the first bracket 32A and the second bracket 32B can be adjusted by rotating the horizontal adjustment screw 41 of the second bracket 32B. This configuration allows the positional relationship of the multiple spray nozzles 11 in the X-axis direction to be adjusted.

Next, the spray nozzle 11 is supported using the positioning jig 30 with a fixed positional relationship. The spray nozzle 11 is placed in the groove 33c of the mounting base 33 of the positioning jig 30. The groove 33c of the mounting base 33 is configured parallel to the Y-axis direction, and by fitting the end of the spray nozzle 11 into it, the spray nozzle 11 is placed so that it can stand on its own.

Next, with the spray nozzle 11 placed on the mounting table 33, the positioning jig 30 is placed on the dummy substrate 100. By placing the positioning jig 30 on the dummy substrate 100, the position of the spray nozzle 11 relative to the glass substrate G is determined. Then, the spray nozzle 11 is attached to the scanning mechanism 14. When attaching the spray nozzle 11 to the scanning mechanism 14, the spray nozzle 11 is attached by positioning it from the side with the fixing member 36 in the long hole 35a for fixing the spray nozzle of the T-shaped fixing jig 35 installed on the scanning mechanism 14 after adjusting the height with the positioning jig 30. In this way, the spray nozzle 11 is freestanding in the positioning jig 30, which makes it easier to attach it to the scanning mechanism 14.

After completing the preparation process S01, as shown in FIG. 7, the positioning jig 30 is removed, and the coating process S02 is performed to produce a film on the glass substrate G by spray coating.

By configuring in this manner, the worker can easily position the spray nozzle 11 in the preparation step S01. In addition, the spray nozzle 11 can be positioned accurately. Furthermore, by rotating the height adjustment screw 44 and horizontal adjustment screw 41 of the positioning jig 30, the height and horizontal position can be easily adjusted, making it easy to set position adjustment conditions according to the shape of the spray nozzle 11.

As described above, the positioning jig 30 for the spray nozzle 11 for spray coating of the present invention is characterized in that the mounting base 33 is formed with a groove 33c that fits with the spray nozzle 11 for spray coating.

By configuring it in this way, the spray nozzle 11 for spray coating can be easily adjusted in the vertical and horizontal directions by fitting it into the groove 33c (recess), and the installation time when replacing the spray nozzle 11 can be shortened.

In addition, the positioning jig 30 of the present invention has a base 31 and brackets 32A and 32B that stand upright from the base 31 and are connected to a mounting base 33, and the brackets 32A and 32B have a height adjustment screw 44 and a height adjustment screw fixing base 32f, which are height adjustment mechanisms for adjusting the height of the mounting base 33.
With this configuration, it becomes easy to adjust the height position of the mounting table 33 with the base 31 as a reference, and the installation time when replacing the spray nozzle 11 can be shortened.

In the positioning jig 30 of the present invention, the mounting table 33 is made of resin.
With this configuration, when the tip of the spray nozzle 11 is fitted into the groove 33c, it is possible to prevent the tip of the spray nozzle 11 from being scratched. As the resin, for example, an engineering plastic such as monomer cast nylon or UPE (ultra-high molecular weight polyethylene) can be used.

Moreover, the positioning jig 30 of the present invention has a plurality of mounting tables 33 .
With this configuration, the height positions of the plurality of spray nozzles 11 can be determined simultaneously, thereby shortening the installation time when replacing the spray nozzles 11.

Furthermore, in the positioning jig 30 of the present invention, the bracket 32B side of the base 31 has a horizontal adjustment screw 41 and a horizontal adjustment screw fixing base 31c, which are a nozzle interval adjustment mechanism.
By configuring in this manner, when positioning multiple spray nozzles 11, the spacing between the spray nozzles 11 can be easily adjusted, thereby shortening the installation time when replacing the spray nozzles 11.

In addition, the manufacturing method of the spray-coated glass substrate G in the present invention includes a preparation step S01 of preparing a spray nozzle 11 for spray coating, and a coating step S02 of coating the glass substrate with a coating liquid after the preparation step S01, and a positioning jig 30 is used in the preparation step S01.
By configuring in this manner, by using the positioning jig 30 in the preparation process S01, the vertical position and horizontal position adjustment of the spray nozzle 11 can be easily performed, thereby shortening the installation time when replacing the spray nozzle 11.

In the method for manufacturing a glass substrate G of the present invention, it is preferable to determine the spacing between the plurality of spray nozzles 11 for spray coating after determining the positions of the plurality of spray nozzles 11 for spray coating in the height direction.
With this configuration, after completing the position adjustment in the height direction, the horizontal position adjustment can be performed by determining the intervals between the multiple spray nozzles 11 for spray coating.

In the method for manufacturing the glass substrate G of the present invention, it is preferable to place a positioning jig 30 on the dummy substrate 100 in the preparation step S01.
With this configuration, the preparation step S01 can be performed without preparing a glass substrate G, so that the installation time required for replacing the spray nozzle 11 can be shortened.

REFERENCE SIGNS LIST 1 Manufacturing device 11 Spray nozzle 12 Coating liquid supply mechanism 13 Movement mechanism 14 Scanning mechanism 30 Positioning jig 31 Base 32A, 32B Bracket 33 Mounting table 33c Groove (recess)

Claims (8)

The mounting table has a recess formed therein to fit a spray nozzle for spray coating.
A positioning jig for a spray nozzle used in spray coating. The recess is made of resin.
2. The positioning jig according to claim 1. The foundation,
a bracket extending from the base and connected to the mounting stand;
The bracket has a height adjustment mechanism for adjusting the height of the mounting table.
2. The positioning jig according to claim 1. A plurality of mounting tables are provided.
2. The positioning jig according to claim 1. Between the base and the bracket,
Has a nozzle interval adjustment mechanism,
4. The positioning jig according to claim 3. 1. A method for producing a spray-coated glass substrate, comprising:
preparing a spray nozzle for spray coating;
A coating step of coating a coating liquid onto a glass substrate after the preparation step is included,
In the preparation step, the positioning jig according to any one of claims 1 to 5 is used.
A method for manufacturing a glass substrate comprising the steps of: In the preparation step, a plurality of spray nozzles for spray coating are positioned in a height direction, and then a spacing between the plurality of spray nozzles for spray coating is determined.
The method for manufacturing a glass substrate according to claim 6 . In the preparation step, a positioning jig is placed on the dummy substrate.
The method for manufacturing a glass substrate according to claim 6 .

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