JPH07216Y2 - Viscous liquid coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a viscous liquid applicator, and more specifically, a viscous liquid for applying a viscous liquid such as an adhesive under pressure to an adherend. The present invention relates to improvement of a coating device.

(Prior Art) In recent years, in order to improve productivity ', reduce costs, etc., a viscous liquid such as an adhesive or paint is mechanically applied by using, for example, what is called a gun spray. Has been done in.

Thus, in the conventional case, for example, as shown in FIG. 7, the discharge valve 6a is connected to the container 1a through the continuous pipe 16a, the adhesive 3a is put in the container 1a, and a constant pressure is applied by a compressor or the like. By applying pressure, the adhesive 3a is pressure-fed to the inside of the discharge valve 6a through the connecting pipe 16a by using this pressure, and the discharge valve 6a is opened to spray the adherend 17a in a sprayed state. .

(Problems to be solved by the invention) Further, the work of applying the adhesive material 3a is extremely important in production in consideration of the aesthetic appearance of the final product, and a certain amount of work is applied to the adherend from the start of applying. It is preferable that the adhesive of (1) is discharged and applied uniformly.

However, in the above-mentioned conventional one, in the initial stage of opening the discharge valve 6a, the adhesive 3a is vigorously discharged and applied while the pressure inside the discharge valve 6a is kept high. Since the adhesive 3a is simply discharged by using the pressure in the container 1a, the discharge valve 6a immediately after the valve is opened.
The internal pressure sharply decreases, and the discharge amount decreases significantly. Therefore, there is a fatal problem that the adhesive 3a is applied to the adherend 17a in the state as shown in FIG. 8 and the adhesive 3a cannot be applied uniformly.

On the other hand, the adhesive 3a is preliminarily discharged until the pressure in the discharge valve 6a reaches a constant pressure, and then the adherend
Such inconvenience can be solved by starting the application to 17a, but the work is extremely complicated and the adhesive 3a is wasted.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to satisfactorily correct the pressure drop in the discharge valve due to opening of the discharge valve and start the coating. An object of the present invention is to provide a viscous liquid applicator that can evenly apply a constant amount of viscous liquid to an object to be coated.

(Means for Solving the Problem) That is, in order to achieve the above-mentioned object, the present invention has a viscous liquid storage container 1 in which a viscous liquid 3 is stored under pressure, and a viscous liquid 3 in the container 1 is viscous. And a discharge valve 6 supplied through a liquid supply path, and the discharge valve 6 in the viscous liquid supply path.
The side is a viscous liquid application device provided with an auxiliary container 11 capable of storing the viscous liquid 3 and adjusting the internal pressure.

(Operation) Therefore, in the viscous liquid application device characterized by the above configuration, the viscous liquid 3 in the container 1 under pressure is supplied to the discharge valve 6 and the auxiliary container 11 via the viscous liquid supply path. Has been
A part of the viscous liquid 3 is stored in the auxiliary container 11.

Then, in this state, when the discharge valve 6 is opened to discharge the viscous liquid 3, the pressure in the discharge valve 6 is significantly lowered. However, an auxiliary valve provided on the discharge valve 6 side of the viscous liquid supply path is used. Since the viscous liquid 3 is stored in the container 11, the viscous liquid 3 is quickly replenished and supplied to the discharge valve 6, so that the discharge amount at the initial opening of the discharge valve 6 can be maintained.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a cylindrical adhesive storage container to which a detachable lid 2 is sealed and attached to the upper part.
A compressor 5 is connected to the pipe via a valve 4 for pressure adjustment, so that a constant pressure is applied to the container 1.

Reference numeral 6 denotes an adhesive-coated discharge valve, which is provided with a needle valve 7 that reciprocates in the discharge valve 6 by air. The tip 7a at the tip of the needle valve 7 discharges the discharge valve 6 from the discharge port. 9 is configured to be opened and closed, and a connecting pipe 10 for supplying the adhesive 3 is provided on the lower side surface portion thereof.

Reference numeral 11 designates a pressure adjusting device called a hollow cylindrical accumulator provided in the connecting pipe 10 of the discharge valve 6, and a reciprocating movable device having a sealing O-ring attached therein. A substantially cylindrical piston 12 is attached. Reference numeral 13 denotes a compressor connected to the pressure adjusting device 11 via a check valve 14 and a valve 15. Reference numeral 16 is a connecting pipe for connecting the connecting pipe 10 of the discharge valve 6 and the container 1.

The present embodiment has the above-mentioned configuration, and a usage example thereof will be described next.

First, the compressor 5 connected to the container 1 is started, and while adjusting the valve 4, the inside of the container 1 is pressurized to a constant pressure. At the same time, the compressor 13 connected to the pressure adjusting device 11 is operated to adjust the valve 15 to pressurize the inside of the pressure adjusting device 11 slightly lower than the pressure inside the container 1.

By adjusting the pressure in the pressure adjusting device 11, the amount of the adhesive 3 stored in the pressure adjusting device 11 can be adjusted.

Thus, the adhesive 3 in the container 1 is stored in the pressure adjusting device 11 and the discharge valve 6 via the connecting pipe 16 and the connecting pipe 10.

Then, in this state, the needle valve 7 is moved in the direction A as shown in FIG.
When is opened, the adhesive 3 is ejected from the ejection port 9 in a sprayed state and applied to the adherend 17.

In this case, the needle valve 7 of the discharge valve 6 is opened to lower the pressure in the discharge valve 6, but at that time, the adhesive 3 in the pressure adjusting device 11 in the pressurized state is used.
Is rapidly replenished and supplied into the discharge valve 6, so that the discharge amount at the initial stage of opening the valve can be maintained.

Therefore, the adhesive 3 discharged from the discharge port 9 is applied to the adherend 17 with a uniform thickness as shown in FIG.

Therefore, other members can be satisfactorily adhered to the article to be coated 17, and there is no inconvenience such as impairing the aesthetic appearance of the product itself.
As a result, it has a great effect of contributing to the production of excellent products.

In the above embodiment, the pressure adjusting device 11 is connected to the connecting pipe 10 provided in the discharge valve 6, but it is also possible to connect it to the connecting pipe 16. In this case, the discharge valve 6
It is not necessary to provide the connection pipe 10 in the above, and the connection pipe 16 may be directly connected to the discharge valve 6, but the pressure adjusting device 11 is preferably provided near the discharge valve 6. The auxiliary container 11 of the discharge valve 6 may be integrally provided as shown in FIG.

Further, in this embodiment, an accumulator is used as the pressure adjusting means in the discharge valve 6, but this construction also has a V-seal type piston 12 as shown in FIG. A bellows type may be used as shown in FIG. 7B or a diaphragm type may be used as shown in FIG. However, the pressure adjusting means is not necessarily limited to the accumulator, and the point is that the auxiliary container is capable of adjusting the internal pressure and storing the viscous liquid 3.

Further, although the needle valve 7 of the discharge valve 6 is configured to be opened and closed by air in the above-described embodiment, for example, a lever or the like may be attached and used as the opening means, and a specific valve opening means is not limited.

Further, the configuration of each part of the discharge valve 6 is not limited to that of this embodiment, and the valve 18 and the discharge port 9 of the discharge valve 6 may be configured as shown in FIG. 6, for example.

Furthermore, in the above embodiment, the case of applying the adhesive 3 has been described, but the applying apparatus according to the present invention can be applied to other viscous liquids such as paints, and the specific type of viscous liquid does not matter. .

In addition, the configurations of the respective parts such as the shape of the container 1 and the connecting pipe 16 can be arbitrarily changed in design within the scope intended by the present invention.

(Effect of the Invention) As described above, in the present invention, since the auxiliary container capable of storing the viscous liquid and adjusting the internal pressure is provided on the discharge valve side of the viscous liquid supply path, the pressure is reduced by opening the discharge valve. Even if this occurs, the viscous liquid in the auxiliary container is quickly pressure-fed and supplied to the discharge valve. Therefore, the reduction in the discharge amount due to the extreme pressure drop caused by the opening of the discharge valve as in the past can be reduced and the connection can be reduced. There is an advantage that a pressure drop due to a viscous liquid supply path such as a pipe can be suppressed.

As a result, the viscous liquid ejected from the ejection port of the ejection valve can eject a constant amount of viscous liquid from the initial opening of the valve of the ejection valve, that is, when the ejection of the adhesive is started. The viscous liquid thus applied has a particularly remarkable effect that it can be applied to the adherend with a uniform thickness.

In addition, there is also a great advantage that it contributes to the production of an excellent product without the inconvenience that the appearance of the product is impaired due to poor adhesion of the viscous liquid as in the past.

In addition, since the coating apparatus according to the present invention has an extremely simple structure, it can be manufactured without significantly increasing the manufacturing cost, and has an excellent practicability that it is easy to handle during use.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a partial sectional front view of a viscous liquid coating device, FIG. 2 is a sectional view of essential parts showing a use state, and FIG. The top view of the to-be-adhered material to which the viscous liquid was apply | coated. 4 to 6 show another embodiment, FIG. 4 is a partial sectional front view of the discharge valve, FIG. 5 is a sectional view of the accumulator, and FIG. 6 is a partial sectional front view of the discharge valve. . 7 and 8 show a conventional example, FIG. 7 is a partial cross-sectional front view of a viscous liquid application device, and FIG. 8 is a plan view of an adherend to which a viscous liquid is applied. 1 ... Container, 3 ... Viscous liquid 6 ... Discharge valve, 11 ... Auxiliary container

Claims (2)

[Scope of utility model registration request] 1. A viscous liquid storage container 1 for storing a viscous liquid 3 under pressure, and a discharge valve 6 for supplying the viscous liquid 3 in the container 1 through a viscous liquid supply path. A viscous liquid application device characterized in that an auxiliary container 11 capable of storing the viscous liquid 3 and having an internal pressure adjustable is provided on the discharge valve 6 side of the viscous liquid supply path. 2. A viscous liquid storage container 1 for storing a viscous liquid 3 under pressure, and a discharge valve 6 for supplying the viscous liquid 3 in the container 1 through a viscous liquid supply path. The viscous liquid coating device, wherein the discharge valve 6 is provided with an auxiliary container 11 capable of storing the viscous liquid 3 and capable of adjusting the internal pressure.