JP7545184B2 - Coating nozzle and coating method - Google Patents

Description

The present invention relates to a coating nozzle that is attached to the material outlet of a container that contains a viscous material such as paint or adhesive.

For example, when applying paint, adhesive, etc. to a target object at a construction site, an applicator is used in which a resin nozzle shaped according to the purpose is attached to the material outlet of a flexible container such as a laminated film container filled with a viscous material. For example, the applicator described in Patent Document 1 is equipped with a nozzle with a flat spatula-like tip that spreads out laterally. By using such an applicator, adhesive squeezed by hand from a flexible container can be discharged from the tip of the nozzle in a pre-spread state of a specified width.

When applying adhesive to building materials with a large surface area, such as flooring, it is preferable to apply the adhesive evenly over as wide a width as possible to improve work efficiency.

However, if the width of the nozzle described in Patent Document 1 is simply widened horizontally and made too large beyond the attachment portion of the material outlet, it will become impossible to mold the nozzle without using a complex mold during resin molding. As a result, it will be difficult to keep manufacturing costs down.

In addition, the wider the lateral width of the nozzle, the more likely it is that the adhesive dispensed over a given width will be non-uniform, which may increase the amount of work required to stretch the adhesive after it has been dispensed. For example, in the case of adhesive that hardens in a short time, this type of decrease in workability is particularly undesirable.

Japanese Utility Model Application Publication No. 5-33873

The present invention was made in consideration of the above-mentioned problems, and aims to provide an application nozzle that can apply a viscous material widely and uniformly, has a shape that is easy to mold into resin, and reduces manufacturing costs, and an application method that uses this application nozzle.

That is, the application nozzle according to the present invention is attached to a material outlet of a container that contains a viscous material such as paint or adhesive, and is characterized in that it comprises an attachment port that is attached to the material outlet of the container provided on the base end side, and a viscous material outlet having a plurality of outlets arranged in a line through which the viscous material is discharged to the outside, the viscous material outlet is provided at an incline from the base end side toward the tip side, and the outlet located at the most tip side of the plurality of outlets is formed larger than the other outlets.

In this way, the viscous material discharge portion is inclined from the base end toward the tip end, so that the width over which the viscous material can be discharged at one time can be increased, thereby improving the efficiency of applying the viscous material.

In addition, the outlet located at the tip end of the multiple outlets is larger than the other outlets, so that the viscous material can be sufficiently ejected from the outlet at the tip end where the ejection amount is likely to decrease. As a result, the viscous material ejected from the entire viscous material ejection section can be made uniform.

Furthermore, because the viscous material discharge portion is inclined, it is possible to form a wide width in the direction in which the discharge ports are lined up, while still fitting the viscous material discharge portion within the width of the mounting port portion. As a result, even a simple mold can be easily removed, reducing the cost of mold creation and keeping manufacturing costs down.

To maximize the width of the viscous material discharged from the viscous material discharge port at one time while reducing manufacturing costs by using a simple mold to mold the resin, it is sufficient that the width dimension of the base end side of the application nozzle other than the attachment port portion and the width dimension of the viscous material discharge portion in the direction in which the discharge ports are lined up when viewed along the protruding direction of the application nozzle are approximately the same.

The coating method using the coating nozzle according to the present invention is characterized in that the coating nozzle is positioned so that the row direction is approximately parallel to the short side direction of a flooring material having a rectangular panel portion, and the coating nozzle is moved along the long side direction of the flooring material while approximately maintaining the parallel state of the row direction and the short side direction. By using such a coating method, a viscous material such as an adhesive can be uniformly applied in a short time to a material with a large surface area, such as a flooring material.

In this way, with the application nozzle according to the present invention, the viscous material discharge portion is provided at an angle, so that the width over which the viscous material can be applied is increased while the viscous material discharge portion is contained within the width of the mounting port portion, so that the tip side does not extend beyond the mounting port portion. This allows the nozzle to be shaped so that it can be easily removed from the mold, making it possible to manufacture the nozzle using a simple type of mold, and making it easy to reduce manufacturing costs. In addition, because the outlet at the tip side is formed larger than the other outlets, the amount of viscous material discharged from each outlet can be made uniform.

FIG. 2 is a schematic perspective view of a coating nozzle according to an embodiment of the present invention. FIG. 2 is a six-sided view of the application nozzle of the embodiment, with a rear view omitted. 3A is a vertical cross-sectional view of the application nozzle of the embodiment and a detailed view of a viscous material application portion. FIG. FIG. 4 is a schematic diagram showing a state in which the application nozzle of the embodiment is in use. 5A to 5C are schematic diagrams showing a coating method using the coating nozzle of the embodiment.

The application nozzle 100 according to one embodiment of the present invention will be described with reference to Figures 1 to 5.

The application nozzle 100 of this embodiment shown in FIG. 1 is used, for example, at a construction site or the like, to manually apply a viscous material, adhesive B, to a flooring material F. This application nozzle 100 is attached to the material outlet C1 of a container C, such as a laminate film container or a soft resin container, filled with adhesive B, to form an application tool 200 for applying adhesive B. By squeezing the container C by hand, the application tool 200 squeezes out the adhesive B from the material outlet C1 through the inside of the application nozzle 100 and ejects it in a predetermined width from its tip.

As shown in Figures 1 and 2, the application nozzle 100 has an attachment port 1 with a flattened cylindrical base end that is attached to a container C, a nozzle body 2 that protrudes while tapering from the base end toward the tip end, and a viscous material discharge portion 3 that is inclined from the base end toward the tip end at the tip of the nozzle body 2.

The attachment port 1 is formed with a female thread that screws into the male thread formed on the material outlet portion C1 of the container C as shown in the cross-sectional view of Figure 3, and has a non-slip surface on the outer surface as shown in Figures 1 and 2. The attachment port 1 is configured to be the part with the largest diameter in the application nozzle 100.

As shown in Figures 1 and 2, the nozzle body 2 has a circular shape with a diameter slightly smaller than that of the mounting port 1 at the base end, and one of the width dimensions is narrowed toward the tip end. As shown in Figure 2(a), the projected shape of the two side portions sandwiching the material outlet portion C1 at the tip end of the nozzle body 2 is a right-angled triangle with a base of the same dimension as the diameter of the mounting port 1, and the long side portion of the approximately rectangular surface 3L that becomes the viscous material discharge portion 3 is perpendicular to the hypotenuse of the triangle. Also, as shown in Figures 2(b) and 2(c), these side portions approach each other and are narrowed as they proceed toward the tip end. The portion of the nozzle body 2 that intersects with the short side portion of the viscous material discharge portion 3 at the tip end is formed as a partial cylinder with the same diameter as the base end of the nozzle body 2, as shown in Figures 2(a) and 2(d). Therefore, if an imaginary cylinder having the diameter of the base end of the nozzle body 2 and a predetermined height is considered, all the surfaces of the nozzle body 2 are contained within the imaginary cylinder. In other words, as shown in FIG. 2(d), the width dimension of the base end side of the coating nozzle 100 other than the attachment port 1 is configured to be approximately the same as the width dimension in the direction in which the viscous material discharge ports 31 of the viscous material discharge section 3 are lined up when viewed along the protruding direction of the coating nozzle 100. In other words, the nozzle body 2 is configured so that there is no part that extends outward beyond the circle at the base end of the nozzle body 2.

The viscous material discharge section 3 has a generally rectangular surface 3L that is inclined obliquely from the base end side to the tip end side in the nozzle body 2 as shown in Figures 1, 2(b), 2(d), and 3, and a plurality of discharge ports 31 that are provided on the rectangular surface 3L so as to penetrate into the nozzle body 2. Five discharge ports 31 are provided in a row in the long axis direction on the rectangular surface 3L. As shown in the cross-sectional view of Figure 3, the nozzle body 2 is hollow, and this hollow space is not partitioned but directly communicates with each discharge port 31. Since the vertical cross section of the nozzle body 2 is a hollow right-angled triangle, the adhesive B is less likely to flow through the most distal discharge port 31A, which is furthest from the attachment port 1 that is connected to the container C, compared to the other discharge ports 31. In this embodiment, as shown in Figures 1, 2(d), 2(e), and 3, the leading-edge outlet 31A, which is the outlet 31 located at the most distal end of the viscous material outlet 3, has a larger diameter than the other outlets 31, so that the amount of adhesive B discharged from the leading-edge outlet 31A and the other outlets 31 can be made approximately the same.

Next, a method for applying adhesive B using the application nozzle 100 configured in this manner will be described with reference to Figures 4 and 5. Here, the object to which adhesive B is applied is, for example, a floor material F having a generally rectangular thin plate shape.

First, the application nozzle 100 is attached to the container C filled with adhesive B, and is arranged so that the rectangular surface 3L of the viscous material discharge part 3 faces the face plate part of the flooring material F almost parallel to the surface as shown in Figures 4 and 5. In other words, the application tool 200 is arranged so that it is obliquely incident on the flooring material F. Furthermore, as shown in Figure 5, the application nozzle 100 is arranged so that the row direction of each discharge port 31 is almost parallel to the short side direction of the flooring material F. In this state, while keeping the row direction of each discharge port 31 almost parallel to the short side direction of the flooring material F, the application nozzle 100 is moved along the long side direction of the flooring material F while squeezing the container C by hand. Then, adhesive B is discharged from each discharge port 31 in five rows in a bead shape along the long side direction of the flooring material F.

In this way, with the application nozzle 100 of this embodiment, by moving it in the long side direction of the floor material F, adhesive B can be applied evenly over a wider area than before. Therefore, adhesive B can be applied efficiently in a short time even to floor materials F with a large surface area of the panel portion. In addition, because adhesive B can be applied efficiently, it becomes easier to use adhesive B with a short hardening time, making it possible to shorten the construction period.

In addition, because the viscous material discharge portion 3 is provided at an angle, the adhesive B can be applied in a band-like manner over a wide area in one go as shown in FIG. 5, without forming any portion on the application nozzle 100 that spreads in the width direction. In addition, the nozzle body 2 and viscous material discharge portion 3 of the application nozzle 100 do not have any portion that spreads in the width direction, and are configured to be contained within the imaginary cylinder described above, making it possible to mold the resin using only a simple mold. This eliminates the need for complex molds and processes, and reduces manufacturing costs.

Other embodiments will be described.

The viscous material discharge portion may be provided at an incline in the application nozzle, and the angle of inclination is not limited to that shown in the embodiment. The number of outlets provided in the viscous material discharge portion is not limited to five, and may be four or less, or six or more. Although the outlet at the most distal end is formed larger than the other outlets, the second outlet from the most distal end may also be larger than the outlet at the base end. In addition, the multiple outlets may be configured so that the diameter increases from the base end to the tip end.

The viscous material applied by the application nozzle is not limited to adhesives, but may be other materials such as paint. Furthermore, the object to be applied is not limited to flooring materials, but may be other objects, and is not limited to objects used at construction sites.

Needless to say, various modifications of the embodiment are possible without going against the spirit of the present invention.

200: application tool 100: application nozzle 1: attachment port 2: nozzle body 3: viscous material discharge portion 31: discharge port 31A: leading end discharge port B: adhesive C: container C1: material outlet portion F: floor material

Claims (3)

A coating nozzle attached to a material outlet of a container containing a viscous material such as a paint or adhesive,
An attachment port portion attached to the material outlet portion of the container provided on the base end side;
a viscous material discharge unit having a plurality of discharge ports arranged in a line along a direction from a base end side to a tip end side , through which the viscous material is discharged to the outside;
The viscous material discharge portion is provided at an incline from a base end side to a tip end side,
The coating nozzle is characterized in that the outlet located at the most tip side of the plurality of outlets is formed larger than the other outlets. The coating nozzle according to claim 1, wherein the width dimension of the base end side of the coating nozzle other than the attachment port portion is approximately the same as the width dimension in the direction in which the respective discharge ports of the viscous material discharge portion are arranged when viewed along the protruding direction of the coating nozzle. A method for applying a viscous material using the application nozzle according to claim 1 or 2, comprising the steps of:
The application nozzle is arranged so that the direction of the row of the discharge ports is approximately parallel to the short side direction of a floor material having a rectangular surface plate portion;
A coating method characterized by moving the coating nozzle along the long side direction of the floor material while roughly maintaining the row direction and the short side direction parallel to each other.