JPH11262717A - Method and device for applying adhesive to surface of platelike body held vertically - Google Patents

Abstract

PROBLEM TO BE SOLVED: To apply an adhesive to the surface of a platelike body in a specified width and a specified coat thickness without dripping the adhesive by bringing the contact part of a nozzle into contact with the surface of the platelike body held vertically, and applying the adhesive to the surface of the platelike body through a gap between the surface of the platelike body and the front face of the nozzle after supplying the adhesive from a supply path. SOLUTION: A space between the surface of a platelike body 1 and the front face 7 of a nozzle 5 is filled with an adhesive 17, and the nozzle 5 is relatively moved to the surface of the platelike body 1 following the movement of the platelike body 1 to the horizontal or the vertical movement of a valve unit. In this case, the relative moving velocity of the nozzle 5 to the surface of the platelike body 1 is balanced with the discharge amount of the adhesive 17 to be determined by the travel of a throttle valve for flow rate control in the valve unit. Thus the adhesive 17 is applied to the surface of the platelike body 1 in a specified coat thickness corresponding to a gap retained between the surface of the platelike body 1 and the front face 7 of the nozzle 5 by the protrusion dimensions of a contact part 8, while maintaining the width dimension of the cross section shape of the nozzle 5 without coming out of the dimension to the side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for applying an adhesive to a surface of a plate-like body held in a vertical state.

[0002]

2. Description of the Related Art A conventional double glazing has a structure in which a plurality of glass plates are separated by a metal spacer via a primary sealing material (for example, butyl rubber) and further joined by a secondary sealing material. There is also known a technique for replacing the metal spacer with a resin spacer to further enhance the heat insulating property of the double-glazed glass. However, since the adhesion between glass and resin is generally not good, it is necessary to interpose an adhesive suitable for them between them. In manufacturing a double-glazed glass by bonding the peripheries of two glass plates via a resin spacer, a resin material is directly applied between (peripheries of) the glass plates while maintaining the two glass plates at a predetermined interval. A method of extruding to form a resin spacer has also been proposed. In this case, in order to hold the two glass plates at a predetermined interval, it is preferable to work while holding the glass plates in a vertical or nearly vertical state because of facility convenience and convenience.

In this case, when forming a resin spacer, an adhesive is previously applied to a glass plate as described above.
On the other hand, when the resin spacer is formed by holding the glass plate in the vertical state, it is preferable to hold the glass plate in the vertical state even in the adhesive application step, which is the previous step, because the bonding efficiency is good. When such a plate-like body such as a glass plate is held in a vertical state, there are the following methods for applying an adhesive to form a thin film of the adhesive on the surface of the plate-like body. As shown in FIG. 16, a spray coating method in which the adhesive 3 is blown by a spray nozzle 2 from a position separated by a predetermined distance toward the outer peripheral surface of the plate-like body 1 held in a vertical state. As shown in FIG. 17, the adhesive 3 is infiltrated into a porous object 4 having a myriad of fine holes, such as a felt or a sponge, and moves while the porous object 4 is in contact with the outer peripheral surface of the plate-like body 1. Method of applying by

[0004]

However, as shown in FIG. 16, the adhesive 3 is blown out from the spray nozzle 2 to stabilize the linear application portion boundary line on the surface of the plate-like body 1 at a constant distance. It is difficult to form an adhesive coating film with a constant width and a constant film thickness while maintaining it, and a sheet-like masking that limits the application range is required, and it takes time to bond and peel off the masking. , Which hindered productivity.

In the method of applying the adhesive 3 through a porous body 4 such as a felt or a sponge as shown in FIG. 17, it is possible to stably maintain a linear application portion boundary. However, since the adhesive 3 is dried and hardened in the porous object 4 to close the fine pores, the porous object 4 needs to be replaced frequently. Further, when the adhesive 3 is applied to the plate-like body 1 held in the vertical state via the porous body 4, the following problem occurs because the plate-like body 1 is in the vertical state. That is, when the plate-like body 1 is in the vertical state, the posture of the porous object 4 approaching the plate-like body 1 also becomes
It is necessary to adjust to the vertical state. In this case, since the adhesive 3 is in a state of being infiltrated into the porous object 4, the adhesive 3 is concentrated on the lower side of the porous object 4. As a result, it becomes difficult to apply the adhesive 3 to the plate-like body 1 with a predetermined film thickness, and there is a possibility that the film thickness may be uneven.

SUMMARY OF THE INVENTION The present invention solves such a problem, stably maintains a linear boundary of a coating portion, and does not block an adhesive flow path due to drying and curing of the adhesive, and allows the adhesive to flow down. An object of the present invention is to provide a method and an apparatus for applying an adhesive to the surface of a plate-like body held in a vertical state, in which an adhesive applied film having a constant width and a constant thickness can be formed. Things.

[0007]

According to the present invention, there is provided a nozzle provided with a contact portion having an adhesive supply passage opening in a flat front surface and having a contact portion projecting further forward from the front surface. By contacting the surface of the plate-like body held in a vertical state and supplying an adhesive from the adhesive supply path, the adhesive is bonded to the surface of the plate-like body via a gap between the surface of the plate-like body and the front surface of the nozzle. A method of applying an adhesive to a surface of a plate-like body held in a vertical state, which is characterized by applying an agent, a nozzle having an adhesive supply passage opened in a flat front surface, and further projecting forward from the front surface of the nozzle. A device for applying an adhesive to the surface of the plate-like body held in a vertical state, characterized in that the width of the cross-sectional shape of the nozzle corresponds to the protrusion of the contact portion from the front surface of the nozzle. The adhesive having the determined film thickness is applied.

In the present invention, since the contact portions are provided at three places on the front surface of the nozzle, the adhesive can be applied with a constant film thickness only by bringing the contact portion of the nozzle into contact with the surface of the plate-like body.

The present invention further comprises a contact portion protruding from the front surface of the nozzle on the side of the nozzle, so that the contact portion is located outside the adhesive application area and the adhesive is provided. Can be applied in a uniform film thickness.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an example of a nozzle 5 used in the method of the present invention, and FIG. 2 is a side view of FIG. 1. The cross section of the nozzle 5 is circular, and the center of the nozzle 5 is bonded. The agent supply path 6 penetrates, and the tip of the adhesive supply path 6 is open to the flat front surface 7 of the nozzle 5.

On the front face 7 of the nozzle 5, a plurality (three in the illustrated embodiment) of spherical contact portions 8 project around the opening of the adhesive supply passage 6. The projecting dimension of the contact portion 8 from the front face 7 of the nozzle 5 is about 10 to 200 microns.

FIG. 3 is a front view showing another example of the nozzle 5 used in the method of the present invention, and FIG. 4 is a side view of FIG. 3, wherein the cross section of the nozzle 5 is square. 2 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 5 is a front view showing still another example of the nozzle 5 used in the method of the present invention. FIG. 6 is a side view of FIG. Bracket 9 is attached in various directions. A roller-shaped contact portion 8 protrudes from the front surface of the bracket 9. The roller-shaped contact portion 8 is located at a position lateral to the front surface 7 of the nozzle 5 and extends 10 to 20 with respect to the extension surface of the front surface 7 of the nozzle 5.
It protrudes about 0 microns. 5 and 6 also show FIGS. 1 and 2
The same parts as those described above are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 7 is a perspective view showing an example of the entire apparatus used in the method of the present invention. One of the nozzles 5 shown in FIGS. The adhesive is applied to the edge of the plate-like body 1 such as a glass plate as described later.

The adhesive supply valve unit 10 is attached to a moving device such as a robot (not shown) and can be moved up and down. Throttle valve is provided. A flexible adhesive supply pipe 13 extending from the bottom of the adhesive tank 12 and a flexible control air pipe 15 extending from the valve unit controller 14 are connected to the flow regulating throttle valve. Have been. The valve unit controller 14 supplies and discharges compressed air for controlling the opening degree of the flow regulating throttle valve in the adhesive supply valve unit 10 to and from the control air pipe 15.

The top of the adhesive tank 12 and the valve unit controller 14 are connected to a compressed air supply pipe 16.
Compressed air at a constant pressure is always supplied from the air.

Next, a method for applying an adhesive to the plate 1 using the apparatus shown in FIG. 7 will be described.

The adhesive stored in the adhesive tank 12 is pushed out by compressed air of a constant pressure supplied to the top of the adhesive tank 12 from the compressed air supply pipe 16 and passes through the adhesive supply pipe 13. Adhesive supply valve unit 10
To a throttle valve (not shown) for adjusting the flow rate, which is provided inside. As the adhesive used in the method of the present invention, for example, an adhesive having a viscosity of 100 to 2000 centipoise is used. The reason for setting it to 100 centipoise or more is that the plate-like body 1 is held in a vertical state, so that the adhesive is dripped after being applied to the plate-like body 1. Thereby, it is possible to prevent application to a predetermined film thickness. The reason why the pressure is set to 2000 centipoise or less is that the load on the adhesive supply valve unit 10 is not increased.

The adhesive supply valve unit 10 is moved by a moving device such as a robot (not shown).
1 is extended, and the front surface of the nozzle 5 is held in a vertical state (including not only completely vertical but also nearly vertical).
The contact portion 8 (see FIGS. 1 to 6) is brought into contact with the surface of the plate-like body 1 by approaching the surface of the plate-like body 1 which is transferred in the horizontal direction. When the compressed air is sent from the valve unit controller 14 to the flow control throttle valve of the adhesive supply valve unit 10 via the control air pipe 15 to open the flow control throttle valve, the adhesive passes through the pipe 11 and passes through the nozzle 5. Is supplied to the adhesive supply path 6 (see FIGS. 1 to 5). Note that, under the control of the valve unit controller 14, stable application of the adhesive can be performed according to the change in the viscosity of the adhesive.

When the nozzle 5 mounted on the pipe 11 of the adhesive supply valve unit 10 is the nozzle 5 described with reference to FIGS. 1 and 2, the nozzle 5 is supplied to the adhesive supply path 6 as shown in FIGS. The adhesive 17 has a thickness corresponding to a gap of 10 to 200 μm held between the surface of the plate 1 and the front face 7 of the nozzle 5 by the protrusion size of the contact portion 8, and is formed by capillary action. Between the surface of the body 1 and the front face 7 of the nozzle 5
It is filled with the same shape as the cross section of the nozzle 5.

After the adhesive 17 is filled between the surface of the plate 1 and the front surface 7 of the nozzle 5 as shown in FIGS.
The vertical movement of the adhesive supply valve unit 10 and the horizontal movement of the plate-like body 1 shown in FIG.
As shown by 8, the nozzle 5 moves relatively to the surface of the plate-like body 1.

At this time, the relative movement speed of the nozzle 5 with respect to the surface of the plate-like body 1 is balanced with the discharge amount of the adhesive 17 determined by the opening degree of the flow regulating throttle valve in the adhesive supply valve unit 10. As a result, the adhesive 17 is
Of the plate-like body 1 and the front face 7 of the nozzle 5
The nozzle 5 is applied to the surface of the plate-like body 1 with a constant film thickness corresponding to the gap of 10 to 200 microns held therebetween and without protruding to the side while maintaining the width of the cross-sectional shape of the nozzle 5. You.

When the nozzle 5 to be mounted on the pipe 11 of the adhesive supply valve unit 10 in FIG. 7 is the nozzle 5 described in FIGS. 3 and 4, the cross section of the nozzle 5 as shown in FIGS. The same square shape having a film thickness corresponding to a gap of 10 to 200 μm held between the surface of the plate-like body 1 and the front surface 7 of the nozzle 5 by the protrusion size of the contact portion 8, An adhesive 17 is filled between the surface of the body 1 and the front surface 7 of the nozzle 5. When the nozzle 5 moves relative to the surface of the plate 1 in the direction of the arrow 18, the adhesive 17 is applied to the surface of the plate 1 without maintaining the square shape and protruding to the side. In this case, even at the corners of the plate-like body 1, it is possible to apply a constant thickness up to the corners.

When the nozzle 5 mounted on the pipe 11 of the adhesive supply valve unit 10 in FIG. 7 is the nozzle 5 described with reference to FIGS. 5 and 6, as shown in FIGS. Since the contact portion 8 for maintaining the distance between the front surface and the front surface 7 of the nozzle 5 is outside the application region of the adhesive 17, a more uniform application thickness can be maintained, and the bracket 9 together with the nozzle 5 can be provided. By changing the position with respect to the adhesive supply path 6 as the center of rotation, the adhesive 17 can be applied without the contact portion 8 entering the application area even when applying to any part of the plate-like body 1.

The nozzle 5 in which the roller-shaped contact portion 8 is located on the side of the front surface 7 of the nozzle 5 can be implemented also in a nozzle 5 having a square cross section.

[0027]

According to the first and second aspects of the present invention, the adhesive having a constant film thickness corresponding to the size of the projecting portion of the contact portion from the front surface of the nozzle is not obstructed because the adhesive supply path is not blocked by drying and curing of the adhesive. With a constant width without drooping in the cross-sectional shape of the nozzle,
There is an effect that it can be applied to the surface of the plate-like body held in a vertical state.

According to the third aspect of the present invention, the adhesive can be applied with a constant film thickness only by bringing the nozzle contact portion into contact with the surface of the plate.

According to the fourth aspect of the present invention, there is an effect that a uniform adhesive film thickness can be maintained in a state where the contact portion is located outside the adhesive application region.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a nozzle used in the method of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view showing another example of the nozzle used in the method of the present invention.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view showing still another example of a nozzle used in the method of the present invention.

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a perspective view showing an example of the entire apparatus used in the method of the present invention.

FIG. 8 is a front view showing a use state of the nozzle shown in FIGS. 1 and 2;

FIG. 9 is a side view of FIG.

FIG. 10 is a front view showing a use state of the nozzle shown in FIGS. 1 and 2;

FIG. 11 is a side view of FIG. 10;

FIG. 12 is a front view showing a use state of the nozzle shown in FIGS. 3 and 4;

FIG. 13 is a side view of FIG.

FIG. 14 is a front view showing a use state of the nozzle shown in FIGS. 5 and 6;

FIG. 15 is a side view of FIG. 14;

FIG. 16 is a perspective view showing an example of a conventional adhesive application method.

FIG. 17 is a perspective view showing another example of the conventional adhesive application method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate-shaped body 5 Nozzle 6 Adhesive supply path 7 Front surface 8 Contact part 17 Adhesive

Continuation of front page (72) Inventor Masao Ito 1-1-1, Suehirocho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture, Asahi Glass Co., Ltd. Inventor Yoshitaka Matsuyama 1150 Hazawacho, Kanagawa-ku, Yokohama, Kanagawa Prefecture Inside Asahi Glass Co., Ltd. (72) Inventor Takashi Shibuya 1150 Hazawacho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Inside Asahi Glass Co., Ltd.

Claims (4)

[Claims] 1. A plate-like body having an adhesive supply passage opening in a flat front surface, a nozzle provided with a contact portion projecting further forward from the front surface, and holding the contact portion of the nozzle in a vertical state. And applying an adhesive to the surface of the plate-like body through a gap between the surface of the plate-like body and the front surface of the nozzle by supplying the adhesive from the adhesive supply path. A method of applying an adhesive to the surface of a plate-like body held in a vertical state. 2. A plate-like body surface held in a vertical state, comprising: a nozzle having an adhesive supply passage opening in a flat front surface; and a contact portion projecting further forward than the front surface of the nozzle. Adhesive coating equipment. 3. The apparatus for applying an adhesive to the surface of a vertically held plate-like body according to claim 2, wherein contact portions are provided at three places on the front surface of the nozzle. 4. The apparatus for applying an adhesive to a surface of a vertically held plate-like body according to claim 2, wherein a contact portion protruding from a front surface of the nozzle is provided on a side of the nozzle. .