JP2000176320A - Resin sprayaing device and execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a coating apparatus and method for uniformly coating a joint side surface with a primer. SOLUTION: A head 4 smaller than joint width is provided to the leading end of a nozzle 3 to which a pressurized primer is guided and ejection holes 5 are provided to the head so that the resin soln. flowing in the head is ejected so as to have an angle with respect to the inflow direction. As a primer pressurizing method, either one of a method for sealing a primer in one pressure- resistant container along with a propellant, a method connecting a pressurizing gas container in a detachable manner to pressurize the primer and a pressurizing method using compressor air pressure and a pressure sending pump is used. The head 4 is lightly applied to the joint bottom of a joint and moved in the joint while ejecting the primer to perform coating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for spraying a resin or a resin solution uniformly and quickly onto a side surface of a joint formed with a material such as concrete, board, metal or the like. .

[0002]

2. Description of the Related Art Conventionally, sealing work of joints formed by concrete, concrete and aluminum sashes, boards, etc.
Before filling with a sealing material or the like, the substrate is cleaned and a resin or a resin solution (hereinafter referred to as a primer) is applied to stabilize the adhesive force. In a construction site, the joint width is not always constant, and since the width is relatively small, it is common practice to apply a primer for stabilizing adhesion using a thin brush. However, in this application method, since a thin brush is used, the primer contained in the brush is consumed immediately. Therefore, each time, the work must be performed by including the primer in the brush many times. Each time, there is a problem in that the applied amount of the primer varies, so that the applied amount is not uniform. In addition, since it must be applied to both sides of the joint, it is very difficult to apply it by brushing. That is the current situation.

[0003] In recent years, structures such as curtain walls that depend on a waterproof function for sealing have been increasing.
The adhesion stability of the sealing material is a major problem that affects the waterproof performance.

[0004] The sealing material is filled on both sides 2 of the joint.
Only the surface is to be bonded. Accordingly, the adhesive interface bears the stretching stress of the sealing material due to the joint movement, and the role of the primer is important.

[0005] The materials constituting the joints are various, such as concrete, tiles, boards, metal, and glass.
Primers suitable for each material are used.

[0006]

However, the application of the primer has not been improved due to the old brushing operation. This is because there was no good tool that anyone could apply so that the primer was left uncoated and coating unevenness did not occur.

[0007] The inventor has conducted intensive studies to make the primer applied to the joint side uniform, and has completed a primer coating apparatus that is free from uneven coating, does not require complicated management on site, and has a high work speed. did.

[0008]

According to a first aspect of the present invention, there is provided a coating method in which a primer is pressurized and sprayed on a joint side surface.
And an ejection hole 5 for ejecting the resin liquid flowing into the head at an angle to the inflow direction. The ejection hole is formed at a fixed distance from the head end according to the joint width and joint depth.

The ejection hole is set at an angle of 140 degrees or less with respect to the nozzle so that the primer can be easily applied to the side surface of the joint. The ejection holes may be provided in two opposing directions. The nozzle and the head are integrally molded or detachable.
In the case of a detachable type, the head is fitted or screwed and attached so that the head can rotate.

[0010] Pressurization of the primer is possible by enclosing the primer together with the propellant in one pressure-resistant container. Alternatively, the pressurized container and the pressurized gas container may be connected in a detachable manner, and a primer may be placed in the pressurized container and used under pressure. At this time, if a pressure-resistant container larger than the container in which the commercially available primer is placed is used, the primer can be set in the state of the container without transfer.

In a place where the work site is wide and a power source or the like can be easily secured, a compressor air pressure,
A pressure pump can be used.

A second invention is a coating method in which a primer is sprayed on one side surface or both side surfaces of a joint using the above device. When the head of the present invention is combined with a pressure device, a uniform coating operation result can be easily obtained.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, a pressure-resistant container 1 is filled with a primer and a propellant. When the button 2 is pressed, the primer is pushed out by the pressure of the propellant, and reaches the head 4 via the nozzle 3. A jet hole 5 is formed in the head 4 at an angle to the nozzle. 2 is 90 degrees in only one direction, FIG. 3 is about 90 degrees in the opposite direction, and FIG. 4 is 1 degree in the opposite direction.
The case of 10 degrees is shown. The spout may be open on both sides or only on one side. It is appropriately selected depending on the joint width, depth, and shape.

The primer can be pressurized by enclosing it in one pressure-resistant container together with a propellant, similarly to a commonly used spray as shown in FIG. In this case, the purpose can be easily achieved in a place where it is not easy to secure a power source or the like or in a work on a narrow scaffold.

As shown in FIG. 6, a pressurized container (62) and a pressurized gas container (61) are connected in a detachable manner, and a primer is directly put into the pressurized container (62) to be used under pressure. You can do it. If a pressure-resistant container larger than the container in which the primer is placed is used, the container 63 can be set in the pressure-resistant container with the primer present. The primer is guided from the nozzle 3 to the head 4 through the flexible hose 64. In the case of this method, a valve 65 is provided in front of the nozzle 3, and the supply of the primer is stopped freely by opening and closing as needed. In the pressurizing method, compressed air of an air compressor may be used as a pressurizing source instead of the pressurizing gas container 61.

As shown in FIG. 7, the primer can be pumped. In this case, the primer is sucked from the primer container 63 by the pump 71 and is guided from the nozzle 3 to the head 4 through the flexible hose 64.
A valve 65 is provided in front of the head 4, and the supply of the primer can be freely stopped by opening and closing as needed. In this case, the pump stops when the valve 65 is closed,
Alternatively, it is necessary to add a mechanism for sensing pressure and causing the primer to overflow to the bypass, thereby preventing the pressure in the flexible hose from rising.

[0017]

EXAMPLE As shown in FIG. 5, a modified silicone sealing primer (MP-100, manufactured by Cemedine Co., Ltd.) was used.
D. In a 300 ml pressure vessel. M. E. FIG. (Dimethyl ether) to obtain a pressure-resistant container 1 containing a primer, and a head 5 shown in FIG. The ejection hole was provided at a position 5 mm from the tip of the head. When button 2 was pressed, the primer was sprayed in a mist form from the spout. Using a tape-cured concrete joint (15 mm wide, 10 mm deep) on both sides, using this device, lightly apply the head to the joint bottom, press the button 2 and move the inside of the joint while squirting the primer.
When spray coating was performed on both sides of the joint at 0 m, a uniform primer coating layer was confirmed on both sides of the joint without any coating unevenness and unpainted portion. During this time, the application time was about 5 minutes including the time required to move on the scaffold. After the primer was dried, a modified silicone sealing material (POS seal, manufactured by Cemedine Co., Ltd.) was filled and joints were waterproofed.

[0018]

[Comparative Example] A modified silicone sealing primer (MP-100, manufactured by Cemedine Co., Ltd.) was applied to a concrete joint under the same conditions as in the example by a conventional brushing method. Upon inspection, it was good where the primer sufficiently contained the brush, but when the primer material was extended and applied, blurring and uneven coating were observed at various places.

[0019]

According to the apparatus of the present invention, since the primer is quickly and uniformly applied, it is possible to solve the problem of poor adhesion of the sealant due to uneven coating and blurring, and the problems such as water leakage and the like. Can greatly contribute to improvement. The construction speed is about five times that of the conventional method, which leads to a reduction in work load. INDUSTRIAL APPLICABILITY The primer coating apparatus and the coating method of the present invention greatly improve the durability and reliability of sealing and contribute to cost reduction not only in construction sites but also in factory production, and the effect is enormous.

[Brief description of the drawings]

FIG. 1 is an elevational view showing an example of the spraying device of the present invention.

FIG. 2 is a cross-sectional view of a head having one ejection hole and an ejection angle of 90 degrees used in the present invention.

FIG. 3 is a cross-sectional view of a head having two ejection holes and an ejection angle of 90 degrees used in the present invention.

FIG. 4 is a cross-sectional view of a head having two ejection holes and an ejection angle of 110 degrees used in the present invention.

FIG. 5 is a perspective view showing a situation in which a primer is sprayed on the joint side surface by the spraying device of the present invention.

FIG. 6 is a conceptual diagram showing an example in which a primer is pressurized by a pressurized gas container in the spraying device of the present invention.

FIG. 7 is a conceptual diagram showing an example in which a primer is pressurized by a pump in the spraying device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressurized container 2 Button 3 Nozzle 4 Head 5 Spouting hole 50 Joint 51 Joint surface 61 Pressurizing gas container 62 Pressure-resistant container 63 Primer container 64 Flexible hose 65 Valve 71 Pump

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D075 CA48 DA32 DB07 DB12 DB22 DC03 EA07 EA41 EB02 4F033 QA01 QB10X QC02 QE14 QE21

Claims (8)

[Claims] 1. A spraying apparatus in which a head 4 having a width smaller than the joint width is provided at a tip of a nozzle 3 through which a resin or a resin solution is guided in a coating method in which a resin or a resin solution is pressed and sprayed on a side surface of the joint. A spraying head for providing a resin or resin solution flowing into the head at an angle with respect to a flowing direction. 2. The head according to claim 1, wherein the ejection holes are formed in two opposing directions. 3. A resin spraying apparatus comprising a head according to claim 1 or 2 provided in a coating method in which a resin or a resin solution is pressurized and sprayed. 4. The resin spraying apparatus according to claim 3, wherein the resin or the resin solution is sealed together with the propellant in one pressure-resistant container. 5. A resin spraying apparatus according to claim 3, wherein the resin pressurizing container and the pressurizing gas container are connected in a detachable manner to pressurize the resin or the resin solution. apparatus. 6. A resin spraying apparatus according to claim 3, wherein the resin or the resin solution is pressurized by air pressure or a pump. 7. A coating method in which a resin or a resin solution is sprayed on one side surface or both side surfaces of a joint using the resin spraying device according to any one of claims 3 to 6. 8. A resin or resin solution is sprayed on one side surface or both side surfaces of a joint using the resin spraying device according to any one of claims 3 to 6, and a sealing material is filled in the joint recess. Method.