JPH07116562A - Device and method for coating - Google Patents

Abstract

PURPOSE:To prevent especially an excuting worker from being stained and to provide an easily operable coating device excellent in coating workability and working safety. CONSTITUTION:In the device for applying a coating resin composition on an object, the device is composed of a resin feed device part (a), a pneumatic feeding device part (b) and a spraying device part (c), and the spraying device part (c) is composed of a resin composition supplying pipe 1 provided side by side with an air opening and closing device 2, a pneumatic feeding hose 5 and a tip device part 3 interlocked with the air opening and closing device 2 by which ejection of the resin composition and spraying are simultaneously carried out, and the pipe 1 is also a holding part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus excellent in coating workability and safety and a coating method therefor, and particularly for coating with high viscosity suitable for waterproof coating, wall coating, floor coating and pavement coating. The present invention relates to a coating device for a resin composition and a method for coating a structure using the same.

[0002]

2. Description of the Related Art Conventionally, for coating a high-viscosity coating resin composition on an object, spraying has been performed using a hand gun type device such as a resin gun, a mortar gun, a stucco gun, a Zolacoat gun, and a cup gun. However, these devices have a small capacity of the resin composition tank due to the handgun type when the coating resin composition is applied to the structure, and the resin composition must be replenished to the tank frequently. For this reason, there are problems that spots are generated in the spray pattern, that the tank cannot be covered and spraying cannot be performed on the ceiling portion, or that spraying directly below will spray onto the feet of the construction worker.

Further, in the case of ordinary paints, the airless spraying method using a high pressure pump is carried out, but since the high pressure hand gun is used, the viscosity of the usable resin composition (1000
(less than cps), there is a problem that there are many mist generations, it is easy to get on your feet, and careful handling is necessary.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to coating a resin composition for coating using an air high pressure pump,
In particular, by using a new coating device for a high-viscosity coating resin composition, the composition is less scattered to the construction worker, and the workability and safety are excellent, and the ceiling surface, wall surface, and floor surface of the target object. On the other hand, it is an object of the present invention to provide a coating apparatus having excellent coating workability and capable of uniformly coating evenly, and a coating method using the coating apparatus.

[0005]

The inventors of the present invention have completed the present invention as a result of earnest research in order to solve the above problems.

That is, the present invention is an apparatus for applying a coating resin composition to an object, which comprises a resin supply unit (a), an air pressure feeding unit (b) and a spraying unit (c). The device section (c) is an advanced device in which the resin composition supply pipe 1 provided with the air switch 2 and the hose 5 for supplying compressed air and the air switch 2 simultaneously discharge and spray the resin composition. A coating device for a coating resin composition, characterized in that the pipe (1) also serves as a gripping part (3). Furthermore, the resin supply device part (a) and / or the pneumatic feeding device part (b) are mounted on the self-propelled carriage (d), and the spraying device part (c) is fixed to the self-propelled carriage (d). And the tip device portion 3 is separated from the carriage (d). Further, the air switch 2 is located at a position distant from the tip device portion 3, and a coating device for a coating resin composition. Furthermore, the resin supply device section (a) comprises a tank for resin composition and a pump. The air switch 2 is of a cock type and / or a button type. The present invention provides a coating method characterized by using this coating apparatus.

The present invention will be described in detail.

(Structure) The object of the present invention means objects that require painting, for example, vehicles such as trains, automobiles, ships and airplanes, furniture, building materials, kitchen appliances, household appliances such as bathroom appliances,
Examples include civil engineering structures such as houses, buildings, bridges, roads, athletic fields, tennis courts, sewer pipes, and tunnels. The structure is preferably a civil engineering structure, and is, for example, a roof surface, a ceiling surface, a wall surface, a floor surface, an inner surface, or an outer surface of the civil engineering building.

The coating resin composition of the present invention is a coating agent,
A coating material or a coating material, preferably a highly viscous material prepared by adding and mixing additives, and is called a waterproof material, floor material, wall material, paving material, or the like. The viscosity of this composition is preferably 200 to 50,000 cps (25 ° C.), particularly preferably 1,000 to 50,000 cps. Examples of this resin include solvent-based alkyd resin, aminoalkyd resin, vinyl resin, acrylic resin, epoxy resin, urethane resin, unsaturated polyester resin, chlorinated rubber, and the like,
It is selected from water-based acrylic resin emulsion, epoxy resin emulsion, urethane resin emulsion and the like. Preferred are one-component or two-component urethane resins and unsaturated polyester resin compositions.

The additives include plasticizers, curing catalysts, fillers, thixotropic agents, pigments and the like. In addition to this, various additives such as known flame retardants, ultraviolet absorbers, antioxidants, dispersants, and surfactants may be added.

The plasticizer includes dioctyl phthalate, dibutyl phthalate, diethyl phthalate, dimethyl phthalate, diheptyl phthalate, diphenyl phthalate,
Phthalic acid derivatives such as diisodecyl phthalate, ditridecyl phthalate, diundecyl phthalate, and benzyl phthalate; Isophthalic acid derivatives such as dimethyl isophthalate and di (2-ethylhexyl) isophthalate; Di (2-ethylhexyl) tetrahydrophthalate, dioctyl tetrahydrophthalate Adipic acid derivatives such as dibutyl adipate, dioctyl adipate, diisodecyl adipate, diisononyl adipate; azelaic acid derivatives such as diisooctyl azelate, diisooctyl azelate; dibutyl sebacate, dioctyl sebacate Sebacic acid derivatives; maleic acid derivatives such as dibutyl maleate, dimethyl maleate, dioctyl maleate; dibutyl fumarate, dioctyl fumarate Citric acid derivatives; itaconic acid derivatives; trimellitic acid derivatives such as trioctyl trimellitate; maleic acid derivatives over preparative such as oleic acid derivatives;
Ricinoleic acid derivatives; stearic acid derivatives; sulfonic acid derivatives, glycol derivatives; glycerin derivatives and the like.

The curing catalyst is one used in polyurethane resins and epoxy resins for promoting the curing of urethane, such as trimethylamine, triethylamine, tributylamine, N-dimethyllaurylamine, N-diethyllaurylamine, NN. ′ -Methylpiperazine, N, N′-dimethylbenzylamine, N-methylmorpholine, N-ethylmorpholine, triethylenediamine, N-pentamethylethylenetriamine, N, N, N′N′-tetramethylpropylenediamine, N- Any one of tertiary amines such as polymethyl polyethylene polyamine and organometallic salts such as calcium octylate, lead octylate, dibutyltin dilaurate and stanna octate can be used as long as they are composed of a single substance or a mixture thereof. it can.

Examples of the filler include inorganic substances such as titanium whiskers, aluminum powder, copper powder, iron powder, silica stone powder, diatomaceous earth, alumina, calcium carbonate, gypsum, mica, clay, talc, asbestos, graphite and carbon black. Carbon fiber, glass powder, glass fiber,
Cement, organic linters, linen, sisal wood flour,
Silk, viscose, acetate, polyamide, vinylon,
Any one selected from aramid fibers and the like and a mixture thereof can be used.

Further, the coating resin composition of the present invention comprises:
For the purpose of imparting non-slip properties, powdered rubber powder, hard plastics powder, walnut powder, sand, etc. can be used.

The thixotropic agent may be selected from fine powder silica powder, surface-treated calcium carbonate, fine powder polyethylene, hydrogenated castor oil and the like.

As the pigment, known pigments selected from carbon black, titanium oxide, iron oxide, chromium oxide green, dyes and the like can be used. In addition, the form of the present composition can be arbitrarily used as a one-pack type or a two-pack type in which the pot life is adjusted by selecting a resin.

Further details will be described with reference to the drawings.

FIG. 1 shows a coating apparatus in which a coating operator holds a resin composition supply pipe 1 as a gripping portion and an operator opens and closes an air switch 2 to simultaneously discharge and spray a resin composition. FIG.
(A) is a resin supply unit, (b) is a pneumatic pump unit,
(C) is a spraying device part, and a spraying device part (c)
Has a pipe 1 provided with an air switch 2 and a hose 5 for supplying compressed air, and the pipe 1 is connected to the tip device portion 3 via an elbow 6.

FIG. 4 shows a self-propelled carriage (d) on which a resin supply device section (a), an air pressure feeding device section (b), and a spraying device section (c) are mounted. Alternatively, it shows a coating device movable by a wheel drive device. Further, FIG. 5 shows a self-propelled coating device which enables a coating operator to get on and drive a self-propelled carriage. In this case, the resin composition supply pipe 1 of the spraying device section (c)
Is preferably in the form of an arm that can be bent.

The resin supply device section (a) of the present invention comprises a tank 12 for resin composition and a pump 13. The resin composition storage tank is a pressure tank, and is a pressure tank type which is sent by pressurizing the tank. The resin storage tank is a hopper tank, and the pressurizing method is selected from a pressure plunger pump type, a diaphragm pump type, and / or a pump pressure feeding method including a snake pump type, a centrifugal pump, and a gear pump.

The pneumatic feed unit (b) of the present invention is selected from a centrifugal blower, a centrifugal compressor, a reciprocating compressor and the like.

The blowing device section (c) of the present invention comprises a resin composition supply pipe 1 provided with an air switch 2, a compressed air supply hose 5 and a tip device section 3, and the air switch 2 is opened and closed. The resin composition is discharged and sprayed at the same time. The tip device unit 3 is pressed by a spring so that the movable piston 7 moves forward when the air is stopped by the air switch 2, and the air discharge having an air vent hole at the center added to the movable piston 7. The pipe closes the gap between the resin composition and the discharge hole to stop the discharge of the coating resin composition, and when the air is in a vented state, the movable piston 7 is retracted to discharge the coating resin composition, and at the same time, The coating resin composition has a structure capable of being sprayed in the form of raindrops by air.

FIG. 2 is a detailed side view showing a state in which the air switch 2 of the tip device portion 3 is closed, and the air of the tip device portion 3 is shown by the resin composition supply pipe 1 to which the air switch 2 is fixed. The injection hole 4 and the air switch 2 are connected by a hose 5 for supplying compressed air. The resin composition supply pipe 1 has an elbow 6
Is connected to the tip device part 3 at, and is for supplying the resin composition to the tip device part 3 from the supply device part (a). It is desirable that the position of the air switch 2 be a position apart from the distal end device section and a position close to the operator and easy to operate.

The tip device portion 3 is constructed such that the movable piston 7 is pressed forward by the spring 8 so that the air pipe 9 attached to the movable piston 7 is brought into close contact with the mouthpiece 10 and the resin composition supply pipe 1 is attached. The discharge of the flowing resin composition is prevented.

When the air switch 2 is opened, compressed air flows and pushes the movable piston 7 back through the hose 5 for supplying compressed air. The air pipe 9 is provided with an air injection hole 11 to balance the air pressure. In this state, compressed air passes through the air pipe 9 and is discharged from the mouthpiece 10.

At this time, since the air pipe 9 is pushed back, a space is generated in the mouth portion 10 which has been closed up until now, and there is nothing that hinders the discharge of the resin composition that has been pressure-fed to this point. Discharging is started. Since the resin composition is sent and the compressed air pushes out the resin composition in front of the resin composition, the resin is discharged in the form of raindrops with less scattering.

When the air switch 2 is closed as shown in FIG.
The spring 8 immediately presses the movable piston 7, and at the same time, the attached air pipe 9 comes into close contact with the mouthpiece 10 to stop the flow of the resin composition and prevent the air from flowing in through the resin 11, so that the resin composition is not discharged.

The tip device portion 3 is a resin composition supply pipe 1, preferably a tip having a length of about 0.5 to 1.5 m, and the mounting angle of which can be freely adjusted by an elbow. is there. In the case of not having the self-propelled carriage (d), this pipe 1 also serves as a grip portion, and the coating resin composition passes from the resin supply device portion (a) through the line hose and the tip via the pipe 1. It is sent to the device section 3. The pipe 1
Can be arbitrarily selected in length.

In FIGS. 2, 3 and 4, the tip unit 3 is connected to the resin composition supply pipe 1 by an elbow 6, and the pipe 1 can be attached to the pipe 1 at an arbitrary angle of 360 degrees. Alternatively, the angle may be freely changed by the operator.

The present invention has the above-mentioned structure, and the construction by the present apparatus is performed even if the target portion is a ceiling, a wall, an inside corner, an outside corner or the like which cannot be constructed by the conventional hand gun type. By selecting the mounting angle of, it can be carried out without causing the resin to contaminate the operator.

Further, when an operator holds the pipe 1 by hand, by attaching a shoulder strap for the worker to the pipe 1, it is possible to prevent fatigue of the hand at the time of working due to holding the pipe for a long time. You can also do it.

[0032]

EXAMPLES The present invention will be described in detail with reference to Examples. The invention is not limited to these examples only. Also, "part" and "%" in the text are based on weight unless otherwise specified.

[Example 1] As shown in FIG. 1, a one-pack type urethane resin composition (terminal was used as the resin supply unit (a) in the hopper of a pressure-feeding device with a hopper (Mono pump NVL-30 manufactured by Hyojin Equipment Co., Ltd.). Isocyanate group-containing urethane prepolymer, plasticizer: dioctyl phthalate, curing catalyst:
Trimethylamine, filler: calcium carbonate, thixotropic agent: finely divided silica, pigment: titanium oxide, viscosity 8000
cps / 25 ° C.] 80 liters, and connect the discharge hose to the pipe of the coating device and adjust the discharge rate to 6 liters / min.

Further, while the air line hose is connected to the air switch 2 (air cock type) of the blowing device (c) and pressurized, the tip end device portion 3 is vertically attached downward, and the air pressure feeding device ( Even if b) is operated, neither the resin composition nor the air is ejected from the nozzle of the tip device section 3. Next, when the air switch 2 is opened, the spray is started in the form of raindrops at the same time, and there is no great scattering, Even though it was not contaminated, a coating film was immediately obtained on the floor surface and was excellent in workability.
The coating floor was free of pinholes and bubbles.

[Embodiment 2] It is desired that the tip device portion 3 of the coating apparatus used in Embodiment 1 is mounted at an angle of 70 degrees upward so that discharge can be performed. A uniform coating film was obtained without any contamination. [Embodiment 3] The coating apparatus used in Embodiment 1 is attached to a self-propelled carriage as shown in FIG. 4, the tip device unit 3 is attached downward at an angle of 80 degrees so that discharge can be performed, and the operator pushes the carriage by hand. The same resin composition as in Example 1 was used to paint the floor in the same manner. A uniform coating film was obtained without contamination of workers.

Comparative Example 1 When a urethane waterproof material of Example 1 was sprayed directly below using a resin gun in which the direction of the mouthpiece portion can be freely changed, a large amount of contamination was generated at the feet of the operator, which was not preferable.

[Comparative Example 2] The mouthpiece of the resin gun of Comparative Example 1 was mounted with the mouthpiece facing upward at 70 degrees, but the eaves of Example 2 was painted, but the waterproof material was scattered on the operator's face and the contamination was severe. There wasn't.

From the above results, it was confirmed that the coating apparatus of the present invention can be used as a method for applying the coating resin composition, in particular, to prevent contamination of workers and to supply a coating apparatus which is easy to operate. Was done.

[0039]

In the coating apparatus of the present invention, since the resin composition supply pipe 1 also serves as the grip portion, the worker can separate the coating surface from the coating surface and can open and close the air switch 2. Thus, the coating resin composition can be easily sprayed or stopped in the form of raindrops using an air pressure feeder. Therefore, it is excellent in coating workability and work safety.

Particularly when a high-viscosity coating resin composition is used, the composition does not scatter to the construction worker and is excellent in workability and safety and uneven on the ceiling surface, wall surface and floor surface of the object. It is possible to provide an excellent coating device that can be coated uniformly and a coating method using the same.

The present invention can provide a coating method in which the coating resin composition is discharged from a single discharge hole and sprayed and coated, the scattering is small, the worker is not polluted, and the coating operation is easy. However, in conventional spray coating using a hand gun such as a resin gun or a high-pressure spraying machine, it is necessary to mask the outer periphery of the coating part (outside the application target) with a large sheet, and the worker must wear goggles and a protective mask.
While it is necessary to wear protective clothing, the present invention has a feature that does not require this.

[0042]

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of the present invention, showing an application device gripped by an operator.

FIG. 2 is a sectional view of a spraying device portion (C) of the present invention.

FIG. 3 is a front end device part 3 of a spraying device part (C) of the present invention.
6A and 6B are a top view and a side view showing that is freely attached in any direction by the elbow 6.

FIG. 4 is a side view of the present invention showing a hand-pushed self-propelled coating device.

FIG. 5 is a side view of the present invention, showing a self-propelled coating device of a type on which an operator can ride.

[0000]

[Explanation of symbols]

 1 ... Pipe for supplying resin composition 2 ... Air switch 3 ... Tip device section 4 ... Air injection hole 5 ... Hose for supplying compressed air 6 ... Elbow 7 ... Movable Piston 8 ... Spring 9 ... Air pipe 10 ... Base 11 ... Air injection hole 12 ... Resin composition tank 13 ... Resin composition pump

Claims (7)

[Claims] 1. An apparatus for applying a coating resin composition to an object, comprising a resin supply device section (a), an air pressure feeding device section (b) and a spraying device section (c), and a spraying device section (c). ) Is composed of a resin composition supply pipe 1 provided with an air switch 2, a compressed air supply hose 5, and a tip device section 3 which is interlocked with the air switch 2 to discharge and spray resin at the same time. A coating device for a coating resin composition, wherein the pipe 1 also serves as a grip portion. 2. A device for applying a coating resin composition to an object, comprising: a resin supply device part (a), an air pressure feeding device part (b), a spraying device part (c), and a self-propelled carriage (d). The spraying device section (c) interlocks with the resin composition supply pipe 1 provided with the air switch 2, the compressed air supply hose 5, and the air switch 2 to discharge and spray the resin at the same time. It consists of the tip device part 3, the resin supply device part (a) and / or the air pressure feeding device part (b) are mounted on a self-propelled carriage (d), and the spraying device part (c) is a self-propelled carriage ( An apparatus for applying a coating resin composition, characterized in that it is fixed to d) and the tip device section 3 is separated from the carriage (d). 3. The coating apparatus for coating resin composition according to claim 1, wherein the air switch 2 is located at a position apart from the tip device section 3. 4. The coating apparatus for coating resin composition according to claim 1, wherein the resin supply device section (a) comprises a resin composition tank 12 and a pump 13. 5. The coating apparatus for coating resin composition according to claim 1, wherein the air switch 2 is of a cock type and / or a button type. 6. The coating resin composition has a viscosity of 200 to 50.
The coating apparatus for coating resin composition according to claim 1, wherein the coating apparatus has a coating composition of 00 CPS (25 ° C.). 7. A coating method using the coating apparatus according to claim 1.