JPH0626695B2 - How to apply the coating agent - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for applying a coating material such as a sealing material, a primer, or an adhesive, and is used, for example, when a large number of tiles are bonded to a board. .

[Conventional technology and its problems]

2. Description of the Related Art Conventionally, panel materials used for floor surfaces and wall surfaces of bathrooms and kitchens have been manufactured by applying an adhesive material to the surface of a board, laminating a large number of tiles thereon, and then crimping these.

In order to apply the adhesive to the surface of the material to be coated such as the board, in the past, the adhesive was discharged onto the surface of the board with a hose or nozzle, so the discharged adhesive has a lot of unevenness and It was necessary to uniformly spread the discharged adhesive using a spatula or the like.

For this reason, the coating work requires a lot of time and labor, and since the coating work is complicated, it is not possible to automate the coating process and eventually the panel material manufacturing line.

The present invention has been made in view of the above-mentioned problems, and it is necessary to apply a coating agent such as an adhesive to the surface of a material to be coated, and then spread the adhesive uniformly using, for example, a spatula. It is an object of the present invention to provide a method for applying a coating agent that can adhere tiles and the like without using a tile.

[Technical means for solving problems]

The technical means of the present invention pressure-feeds the coating material to the coating nozzle, arranges the material to be coated so that the surface thereof faces the coating nozzle, and keeps the coating nozzle and the material to be coated constant. A method of applying a coating agent so that a bead is formed on the surface of the material to be coated by moving the coating material at a speed, wherein the coating nozzle spreads from the introduction portion of the coating agent toward the tip. A nozzle body having a large diameter, a nozzle plate provided at the tip of the nozzle body and having a large number of ejection holes arranged in a row, and a large number of ejection holes for applying a coating agent provided in a flow path inside the nozzle body. And a color plate for evenly discharging the ink, and a plurality of coating nozzles are arranged so that the respective discharge holes are arranged in rows, and the coating nozzles are coated from the branch manifold through valves. Agent Pumping.

[Action]

When the coating agent is pressure-fed to the coating nozzle, the coating agent is discharged from a large number of discharge holes arranged in a row at a predetermined diameter and at a predetermined interval.

By moving the coating nozzle or the coating material, beads of the coating material having a predetermined diameter and a predetermined spacing are formed on the surface of the coating material.

The material to be coated and the tile can be adhered to each other by, for example, adhering a tile or the like to the coating surface.

By opening or closing each valve, the coating nozzle for discharging the coating material is selected and the coating width is adjusted.

〔Example〕

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

First, the coating nozzle 1 used in the coating method of this embodiment.
Will be described.

3 to 5, the coating nozzle 1 has a nozzle body 2 whose diameter is enlarged toward the tip, and a large number of nozzles are attached to the tip of the nozzle body 2 with screws 5, 5 ... , A nozzle plate 3 having discharge holes 4, 4, ..., an adapter 7 having a communication hole 8 communicating with the introduction hole 6 of the nozzle body 2, a cap nut 9 connecting the nozzle body 2 and the adapter 7, and a screw on the adapter 7. It is made up of connecting fittings 10 that are plugged in and connected to connect valves and hoses. In addition, 17 is a packing.

The nozzle body 2 includes a triangular bottom plate portion 11, side plate portions 12 and 12 formed perpendicularly to the bottom plate portion 11, a cover portion 13 screwed to the side plate portion 12, and the cap nut 9 described above. A screw portion 14 having an introduction hole 6, a bottom plate portion 11, side plate portions 12 and a cover portion 13 and a color plate 16 screwed into a channel 15 surrounded by the cover portion 13.

The discharge holes 4 of the nozzle plate 3 have a diameter of, for example, 2 to 3 mm, and the intervals (pitch) of the discharge holes 4 are 5 to 15 mm.

According to this coating nozzle 1, by supplying a coating material such as an adhesive from the connection fitting 10, the coating material is applied to each discharge hole 4
Discharge almost evenly.

By the way, FIG. 1 is a front view of a coating apparatus using the above-mentioned coating nozzle 1, and FIG. 2 is a circuit diagram of the coating apparatus.

In FIG. 2, the drum D filled with the adhesive A is bonded to a pressure feed pump 31 including elevator cylinders 32, 32 and a follower plate 33 that is moved up and down by the elevator cylinders 32. Compressed air from an air pressure source 39 is supplied to the elevator cylinder 32 via a regulator 35 and a switching valve 34. By switching the switching valve 34, the follower plate 33 descends.

As a result, the adhesive A passes through the pressure feed path 33 including the hose 33a and the conduit 33b, the constant flow rate device 40 including the DC gear motor 41 and the gear pump 42 which is rotationally driven at a constant speed by the DC gear motor 41, and the hose 22. It is fed under pressure to a supply port 21a provided at the center of the manifold 21.

In addition, 36 is an opening / closing valve, 37 is a regulator, and 38 is a check valve.

In FIG. 1, a large number of coating nozzles 1, 1 ... Are arranged so that the rows of the discharge holes 4 are in series, and are attached to a frame or the like (not shown). As described above, the adhesive is pressure-fed to the manifold 21, and the hoses 26 connected to the discharge ports 21b provided on the peripheral surface of the manifold 21 use the shutoff valves 23, 23 ... 1 is supplied. A manual stop valve may be provided between each discharge port 21 and the hose 26.

A conveyor 24 having rollers 25 is provided below the coating nozzle 1, and a board B as a material to be coated moves on the conveyor 24 at a constant speed in a direction perpendicular to the paper surface.
Depending on the width of the board B (length in the left-right direction in FIG. 1),
The shutoff valve 23 corresponding to the coating nozzles 1 ... Required for coating the surface of the board B is opened.

The adhesive that has flowed in from the connection fitting 10 of the coating nozzle 1 passes through the communication hole 8 and the introduction hole 6 of the adapter 7 and flows into the flow path 15. Since there is a color plate 16 in the flow path 15,
The adhesive is delivered to each discharge hole 4 substantially evenly without being biased to the center of the nozzle plate 3.

Therefore, the discharge holes 4, 4 ... At the tip of the coating nozzle 1
Since the adhesive has a substantially constant diameter,
The adhesive is applied to the surface of the board B in the form of beads at regular intervals.

The coated board B is tiled on the surface thereof in the next step, for example, and is pressed by an appropriate press or the like to manufacture a panel material.

According to the above-described embodiment, by moving the coating nozzle 1 relative to the surface of the board, the adhesive can be coated in a bead shape with a constant interval over a wide range of the surface of the board, and a spatula or the like is used. Without tiles, you can directly attach the tiles to the board. Therefore, it becomes possible to automatically apply the adhesive to the board B continuously and automate the production of the panel material.

Further, by opening the shut-off valve 23 corresponding to the required coating nozzle 1, coating can be performed on boards B of various sizes. The shut-off valve 23 may be an air pilot type, an electromagnetic type, a manual type, or the like.

According to the above-described embodiment, the adhesive A fed under pressure by the hose 22 is branched and supplied to each coating nozzle 1 by the cylindrical manifold 21, so that the adhesive A is supplied to each coating nozzle 1. It is evenly pumped and discharged uniformly from the discharge hole 4, and piping for branching and maintenance are easy.

In the above-described embodiment, the constant flow rate device 40 is provided, but in the case where pressure feeding at a substantially constant flow rate is performed depending on the type or state of the coating agent, the temperature control state of the coating agent, the pressure feeding state of the pressure feeding pump 31, or the like. The constant flow rate device 40 may be omitted.

Although the ejection holes 4 of the coating nozzle 1 are arranged in two rows in the above-described embodiment, they may be arranged in one row or three rows or more.
Although the nozzle body 2 has a triangular shape, it may have a semicircular shape or a trumpet shape, and the other parts of the coating nozzle 1 and the shape of each part can be variously changed.

Although the coating nozzle 1 is fixed and the board B is moved in the above-described embodiment, the board B is fixed and the coating nozzle 1 is moved along the coating surface of the board B by a predetermined locus by a robot or the like. You may make it move automatically.

〔The invention's effect〕

According to the present invention, a coating agent such as an adhesive can be applied to the surface of a material to be coated in a wide range in a bead shape at predetermined intervals. Therefore, for example, tiles and the like can be directly attached to the board and bonded without using a spatula or the like.

Further, since the coating width is adjusted by selecting the open / closed state of each valve, it is possible to coat on boards of various sizes.

According to the present invention, it is possible to automatically apply an adhesive or the like to a board continuously and automate the manufacturing process of a panel material or the like.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view of a main part of a coating apparatus, FIG. 2 is a circuit diagram of the coating apparatus, FIG. 3 is a front sectional view of a coating nozzle, and FIG. 4 is coating. Bottom view of the nozzle for
FIG. 5 is a partial cross-sectional side view of the coating nozzle. 1 ... Coating nozzle, 4 ... Discharge hole, 21 ... Manifold (branch manifold), 24 ... Conveyor, 31 ... Pressure pump, A ... Adhesive (coating agent), B ... Board (coating target) Material).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuo Kido 3-9-2 Nihonbashi, Chuo-ku, Tokyo Kent Moore Japan Co., Ltd. (72) Inventor Yoshiaki Ohno 3-9 Nihonbashi, Chuo-ku, Tokyo No. 2 in Kent Moore Japan Co., Ltd. (56) Reference JP-A-58-36949 (JP, A)

Claims (1)

[Claims] 1. A coating agent is pressure-fed to a coating nozzle, the coating material is arranged such that its surface faces the coating nozzle, and the coating nozzle and the coating material are relatively moved at a constant speed. A method of applying a coating agent so that a bead is formed on the surface of the material to be coated by moving the coating material, wherein the coating nozzle is a nozzle whose diameter is increased from the introduction portion of the coating agent toward the tip portion. A main body, a nozzle plate provided at the tip of the nozzle main body and having a large number of discharge holes arranged in a row, and a coating agent provided in a flow path inside the nozzle main body to evenly distribute the coating agent from the large number of discharge holes. A plurality of coating nozzles are arranged so that their respective ejection holes are arranged in rows, and a coating material is pressure-fed to each of the coating nozzles from a branch manifold via a valve. You The method of coating the coating agent, characterized in that.