JP3498941B2 - High viscosity paint supply nozzle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved high viscosity paint supply nozzle.

[0002]

2. Description of the Related Art As a nozzle for ejecting a fluid or the like, for example, Japanese Patent No. 2753685, "Injection nozzle" is known. The above technology relates to an injection nozzle capable of enhancing the blowing effect and reducing noise at the time of injection, and further capable of easily cleaning the injection hole. As shown in FIG. 3, the nozzle body 11, upper and lower lid members 12 and 13 attached to the nozzle body 11 so as to be openable and closable, an inlet passage 16 and an opening 14 provided in order from the inlet side to the outlet side of the nozzle body 11. And a plurality of groove portions 17 and 18, and upper and lower lid members 12 and 1
By closing 3 and fixing to the nozzle body 11, the opening 14 and the grooves 17 and 18 of the nozzle body 11 are closed to form the expansion chamber 14a and the injection passages 17a and 18a.

[0003]

In the above technique, since the fluid flows in from one inlet passage 16 and is discharged from the eight upper and lower injection passages 17a, 18a, the injection passages 17a,
A large amount of fluid may be discharged inside 18a, and discharge may be more difficult at the outside than inside, resulting in uneven discharge amounts.

Since the upper and lower lid members 12 and 13 cannot be removed from the nozzle body 11, for example, when cleaning, the upper and lower lid members 12 and 13 are opened and attached to the nozzle body 11. It becomes difficult to wash the details. Therefore, an object of the present invention is to uniformly discharge the paint (fluid),
An object of the present invention is to provide a high-viscosity paint supply nozzle capable of cleaning details.

[0005]

In order to achieve the above object, the first aspect of the present invention is to provide a paint supply nozzle for applying a paint having high viscosity to an object. A first flow path for introducing paint into the nozzle body, and a second flow path orthogonal to the first flow path.
The flow path and a pair of third flow paths extending in the direction perpendicular to the second flow path from the vicinity of the left and right ends of the second flow path are provided, and the coating material received from the third flow path is temporarily applied to the discharge part forming member. A paint reservoir groove for storing and equalizing pressure and a plurality of discharge grooves for guiding the paint from the paint reservoir groove to the outside are provided, and the structure is such that the nozzle reservoir main body closes the paint reservoir groove and the opening surface of the discharge groove.

The paint reaches the second flow path from the first flow path, is divided into a pair of third flow paths from the second flow path, and is temporarily stored in the paint collecting groove from the third flow path to equalize pressure to The groove is divided into a plurality of discharge grooves and discharged to the outside.

Since it is possible to selectively attach a plurality of types of discharge portion forming members to one nozzle body, it is possible to easily construct a large number of types of high viscosity paint supply nozzles. Since the discharge part forming member can be removed from the nozzle body,
Easy to wash and clean.

Since the paint reservoir groove is filled with the paint through the pair of third flow passages, the paint reservoir groove can be more uniformly replenished with the paint as compared with the case where only one flow passage is filled. . Since the paint is temporarily made uniform in the paint reservoir groove, the paint can be uniformly discharged from the plurality of discharge grooves.

According to a second aspect of the present invention, the bottom surface of the discharge groove is flush with the bottom surface of the paint reservoir groove, and the ceiling of the discharge groove is flush with the ceiling of the paint reservoir groove. Since there is no step from the discharge groove to the discharge groove, the paint can be smoothly flowed. There is no worry that the paint will collect in the steps or pockets and solidify.

According to a third aspect of the invention, the number of discharge grooves for the pair of third flow paths is four, and the inlets of the discharge grooves are arranged on the left and right of the outlet of the third flow path. The flow path of the paint is branched from 1 to 2, and from 2 to 4 so that the flow of the paint is smooth and the paint is uniformly discharged from any discharge groove. Furthermore, by arranging the inlets of the discharge grooves to the left and right of the outlet of the third flow path, the distance between the outlet of the third flow path and the inlet of the discharge groove can be set to be equal, and the paint can flow from the third flow path to each discharge groove. Flows evenly to.

According to a fourth aspect, the discharge groove is a square groove. The ejection grooves can be easily processed, and the variation in the flow passage area of each ejection groove is reduced.

According to a fifth aspect, the discharge portion forming member is an elastic material. The ejection portion forming member is in close contact with the nozzle body, and the sealing property between the nozzle body and the ejection portion forming member is improved.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of the reference numerals. FIG. 1 is a front view showing a coating apparatus equipped with a high viscosity coating material supply nozzle according to the present invention and an object to be coated. The coating apparatus 1 is a coating material supply pipe 2 connected to a coating material supply pump (not shown), and this coating material. An inverted Y-shaped branch pipe 3 branched from the supply pipe 2 (... indicates a plurality, hereinafter the same),
A high-viscosity paint supply nozzle 10 (hereinafter referred to as "nozzle 10") connected to the branch pipe 3 is used for coating for the purpose of protecting the coating object B such as the outer surface of the finished vehicle body. is there. Incidentally, 4 is a bolt for sealing the tip of the paint supply pipe 2, and 5 is a connecting pipe for connecting the nozzle 10 to the branch pipe 3.

FIG. 2 is an exploded perspective view of the nozzle according to the present invention. The nozzle 10 includes a nozzle body 11 connected to the branch pipe 3 (see FIG. 1) and a bolt 12 ...
And a plate member 13 as a discharge portion forming member that is detachably attached.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, in which the nozzle body 11 has a first flow path 21 for introducing paint and a second flow path intersecting the first flow path 21 in a T-shape. The passage 22 and a pair of third passages 23, 23 extending in the perpendicular direction from the vicinity of the left and right ends of the second passage 22 are provided. 2
4 is a screw for forming on the inlet side of the first flow passage 21 for screw connection to the connecting pipe 5 (see FIG. 1), and 25 is a second flow passage 22.
Is a set screw with a hexagonal hole for sealing the end part of, and 26 ... are bolt holes for screwing with the bolts 12 ... (see FIG. 2).

4 (a) and 4 (b) are explanatory views of the plate member according to the present invention, and FIG. 4 (a) is a view taken in the direction of arrow a in FIG.
(B) is a view on arrow b in FIG. 2. In (a), the plate member 13 is provided with a paint reservoir groove 31 that communicates with the third flow paths 23, 23 of the nozzle body 11 (see FIG. 3), and a discharge groove 32 that branches from the paint reservoir portion 31. It is a thing. In addition, 33 ... Is an insertion hole into which the bolt 12 ... (see FIG. 2) is inserted. The plate member 13 may be made of an elastic material such as soft plastic or rubber, whereby the plate member 13 can be further brought into close contact with the nozzle body 11 and the sealing property between the nozzle body 11 and the plate member 13 can be further enhanced. it can.

In (b), the paint reservoir groove 31 forms a paint reservoir chamber S by mounting the plate member 13 on the nozzle body 11 and closing the opening surface. Discharge groove 3
Reference numeral 2 denotes a square groove, which is formed on the nozzle body 11 by a plate member 13
The discharge passage G is formed by mounting the plug and closing the opening surface. The bottom surfaces of the ejection grooves 32 ... Are flush with the bottom surface of the paint reservoir 31.

5 (a) and 5 (b) are explanatory views of the cross-sectional shape of the ejection groove. (A) shows the square groove (square groove) type discharge grooves 32L and 32R according to the present invention (for convenience, L and R are attached for distinction), and when a plurality of discharge grooves 32L and 32R are bored, they are irreversible. Due to a processing error, there is a difference between the depth h1 and the depth h2. As a result, the flow passage area of the discharge groove 32L (w ×
Although there is a difference between h1) and the flow passage area (w × h1) of the discharge groove 32R, this difference is proportional to the difference between h1 and h2.

(B) shows a plate member 10 as a comparative example.
Round groove type discharge grooves 101L, 1 formed in No.
01R (for convenience, L and R are attached for distinction),
When a plurality of ejection grooves 101L and 101R are bored, a depth h3 and a depth h4 may differ due to an irreversible processing error.

As a result, there is a difference between the flow passage area of the discharge groove 32L and the flow passage area of the discharge groove 32R, but this difference is h
The proportion of increase in the difference in the flow path area increases as the difference in h3 and h4 increases, not in proportion to the difference in 3,3. From the above, the square grooves 32L and 32R of the embodiment (a) are
It is possible to reduce the variation in the flow passage area of each groove as compared with the circular grooves 101L and 101R of the comparative example of (b).

FIG. 6 is a sectional view taken along line 6-6 of FIG. 1, showing a state in which the nozzle body 11 is attached to the connecting pipe 5 and the plate member 13 is attached to the nozzle body 11. In addition, FIG.
That the first flow path 21, the second flow path 22, the third flow paths 23, 23 of the nozzle body 11 (the rear side is not shown), the paint reservoir S, and the discharge path G are connected to the connecting pipe 5 in this order. Show.

As described above, since the plate member 13 is removably attached to the nozzle body 11, a plurality of types of plate members 13 can be selectively attached to one nozzle body 11, so that various types of nozzles can be attached. 10 (see FIG. 2) can be easily configured. Moreover, since the plate member 13 can be removed from the nozzle body 11, cleaning and cleaning can be easily performed.

The operation of the nozzle 10 described above will be described below. 7A to 7C are action diagrams (first action diagram) for explaining the action of the nozzle according to the present invention. First, in FIG. 1, a paint supply pump (not shown) is operated, and high-viscosity paint is supplied through the paint supply pipe 2, the branch pipe 3, and the connecting pipe 5 as shown in FIG.
Flow into the first flow path 21 of the nozzle body 11 shown in (a).

In (b), the coating material P is the first flow path 21.
To the second flow path 22, and the second flow path 22 is filled.
Then, the second flow path 22 is divided into the two third flow paths 23, 23 and flows into the back side from the front side in the drawing. In (c), the coating material P flows from the third flow paths 23, 23 to the coating material storage chamber S.
Reach inside.

FIGS. 8A and 8B are action diagrams (second action diagram) for explaining the action of the nozzle according to the present invention. (A)
At, the paint P fills the paint reservoir S and equalizes the pressure. In (b), the coating material P is divided into the discharge passage G from the inside of the coating material storage chamber S and flows, and then discharged from the discharge passage G to the outside.

The bottom surface of the discharge groove 32 shown in (a) is flush with the bottom surface of the paint reservoir groove 31, and the ceiling of the discharge groove 32 (the nozzle body 11 (see FIG. 7A)) is the paint reservoir groove. 31
Since it is flush with the ceiling (nozzle main body 11) of the above, the bottom surface and the ceiling have no step from the paint reservoir groove 31 to the discharge groove 32, and the paint P can smoothly flow. Therefore, there is no concern that the paint P will collect in the steps or pockets and solidify.

FIGS. 9A and 9B are action diagrams (third action diagram) for explaining the action of the nozzle according to the present invention. (A)
In, the paint P discharged from the discharge path G (see FIG. 8B) is supplied to the surface of the moving coating object B.
In (b), the coating material P supplied to the coating object B is spread to a predetermined thickness t by the roller 6 provided in the coating apparatus 1 (see FIG. 1). After that, the coating material P is dried by a dryer (not shown).

As shown in FIGS. 7B and 7C, the paint P is placed in the paint reservoir groove 31 through the pair of third flow paths 23, 23.
Therefore, the paint can be replenished into the paint reservoir groove 31 more uniformly than the case where only one flow path is filled. Further, in order to make the paint reservoir groove 31 uniform once,
The paint P can be evenly discharged from the discharge grooves 32 (see FIG. 8A).

As shown in FIG. 4A, the number of the discharge grooves 32 for the pair of third flow paths 23, 23 is four, so that FIGS. 7A to 7C and FIG. ) And (b), the flow path of the paint P branches from 1 to 2 places and 2 to 4 places, so that the flow of the paint P becomes smooth,
The paint P can be uniformly discharged from any of the discharge grooves 32.

Further, since the inlets of the discharge grooves 32, 32 are arranged on the left and right of the outlet of the third flow path 23, the distance between the outlet of the third flow path 23 and the inlets of the discharge grooves 32, 32 should be set equal. And the paint P is discharged from the third flow path 23 into the respective discharge grooves 32, 3
It can be flowed evenly to 2.

The nozzle 10 of the present invention can be used not only for paints but also for other high-viscosity fluids.

[0032]

The present invention has the following effects due to the above configuration. In the high-viscosity paint supply nozzle of claim 1, since a plurality of types of discharge part forming members can be selectively attached to one nozzle body, a large number of types of high-viscosity paint supply nozzles can be easily configured. . Further, since the discharge portion forming member can be removed from the nozzle body, cleaning and cleaning are easy.

Furthermore, since the paint is filled in the paint reservoir groove through the pair of third flow passages, the paint can be more uniformly replenished in the paint reservoir groove as compared with the case where only one flow passage is filled. You can Furthermore, since the paint is temporarily made uniform in the paint reservoir groove, the paint can be evenly discharged from the plurality of discharge grooves.

In the high-viscosity paint supply nozzle according to the second aspect, the bottom surface of the discharge groove is flush with the bottom surface of the paint reservoir groove, and the ceiling of the discharge groove is flush with the ceiling of the paint reservoir groove. With regard to (3), there is no step from the paint reservoir groove to the discharge groove, and the paint can be smoothly flowed. Therefore, there is no concern that the paint will collect in the steps or pockets and solidify.

In the high-viscosity paint supply nozzle of claim 3, since the number of the discharge grooves for the pair of third flow paths is four, the paint flow paths are branched from one place to two places and from two places to four places. Because of the separation, the flow of the paint becomes smooth, and the paint can be uniformly discharged from any of the discharge grooves. Also, the third
Since the inlet of the discharge groove is arranged on the left and right of the outlet of the flow path,
The distance between the outlet of the flow path and the inlet of the discharge groove can be set to be equal, and the paint can be evenly flowed from the third flow path to each discharge groove.

In the high-viscosity paint supply nozzle according to the fourth aspect, since the discharge groove is a square groove, the discharge groove can be easily processed, and the processing cost can be suppressed. Further, it is possible to reduce the variation in the flow passage area of each discharge groove, and it is possible to make the supply of the paint more uniform in each discharge groove.

In the high-viscosity paint supply nozzle of the fifth aspect, since the discharge portion forming member is made of an elastic material, the sealing property between the nozzle body and the discharge portion forming member can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing a coating apparatus and a coating object to which a high-viscosity coating material supply nozzle according to the present invention is attached.

FIG. 2 is an exploded perspective view of a nozzle according to the present invention.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is an explanatory view of a plate member according to the present invention.

FIG. 5 is an explanatory diagram of a cross-sectional shape of a discharge groove.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is an action diagram (first action diagram) for explaining the action of the nozzle according to the present invention.

FIG. 8 is an operation diagram (second operation diagram) for explaining the operation of the nozzle according to the present invention.

FIG. 9 is an operation diagram (third operation diagram) for explaining the operation of the nozzle according to the present invention.

[Explanation of symbols]

10 ... High viscosity paint supply nozzle, 11 ... Nozzle body, 13
... Discharge portion forming member (plate member), 21 ... First flow path,
22 ... 2nd flow path, 23 ... 3rd flow path, 31 ... Paint storage groove,
32 ... Ejection groove, B ... Object, G ... Ejection path, P ... Paint, S
… Paint storage room.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-57394 (JP, A) JP-A-7-155670 (JP, A) JP-A-5-138104 (JP, A) Actual Kaihei 5- 52000 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B05B 1/14 B05C 5/00 101

Claims (5)

(57) [Claims] 1. A paint supply nozzle for applying a highly viscous paint to an object, the paint supply nozzle comprising a nozzle main body and a discharge part forming member detachably attached to the nozzle main body. The nozzle body has a first flow path for introducing paint, a second flow path orthogonal to the first flow path, and a pair of a pair of members extending from right and left end portions of the second flow path in a direction perpendicular to the second flow path. A third flow path is provided, and the discharge part forming member has a paint reservoir groove for temporarily storing and equalizing the paint received from the third flow path, and a plurality of discharge grooves for guiding the paint to the outside from the paint reservoir groove. A high-viscosity paint supply nozzle, comprising a structure in which the opening surfaces of the paint reservoir groove and the discharge groove are closed by a nozzle body. 2. The high viscosity paint supply nozzle according to claim 1, wherein the bottom surface of the discharge groove is flush with the bottom surface of the paint reservoir groove. 3. The height according to claim 1, wherein the number of the discharge grooves for the pair of the third flow paths is four, and the inlets of the discharge grooves are arranged on the left and right of the outlet of the third flow path. Viscosity paint supply nozzle. 4. The high-viscosity paint supply nozzle according to claim 1, wherein the discharge groove is a square groove. 5. The high-viscosity paint supply nozzle according to claim 1, wherein the discharge part forming member is made of an elastic material.