JPH01130759A - Coating device - Google Patents

Abstract

PURPOSE:To enhance the workability of the title device and to efficiently and safely obtain a high-quality coating by connecting a coating agent can and an applicator to stably, continuously, and automatically supply the coating agent to the applicator. CONSTITUTION:A nozzle communicating with the opening and closing valve to be opened along with the operation and to inject the coating agent pressurized by compressed gas is provided to the can body 5 of the coating agent can 7 filled with the coating agent and compressed gas. One end of the coating agent passage 10 of the applicator 11 is allowed to communicate with the nozzle, and the other end is connected to a coating part 9 (e.g., roller). Since the coating agent can 7 and the applicator 11 are connected in this way, the coating agent in the can 7 is pressurized by the compressed gas, passed through the opening and closing valve and nozzle, and stably, continuously, and automatically supplied to the coating part 9 of the applicator 11 through the agent passage 10.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is based on connecting a paint can and an applicator, and provides an efficient and safe coating method with excellent workability and high quality. Regarding equipment.

[Background technology]

For example, in painting and coating work on relatively small areas, such as repainting buildings, repair painting, applying adhesives, and disinfectant, conventionally, in addition to spray painting using disposable aerosol cans, brush painting, Direct coating, in which a coating agent is applied using an applicator such as a roller or a pad, is generally known.

However, although these methods allow easy and inexpensive painting work, they have many problems.For example, in the former case, ■ Some of the sprayed paint scatters, causing damage to the surrounding environment. In addition to having a negative impact on health and safety, such as by causing contamination, it is also poor in workability, as it requires masking over a wide area of the surface to be painted.

■ The internal pressure of liquefied gas inside a can is generally 2 to 8 kgf.
/cal, which makes it difficult to atomize coatings with high solid content, specific gravity, viscosity, etc. such as aggregates. On the other hand, the use of paints with low solid content and low viscosity
This can lead to deterioration of the hiding properties of the paint film and cause the paint to sag or run off.
Therefore, multiple dilute coatings are required, resulting in a decrease in coating efficiency.

■ For aerosol cans that utilize vaporized jets of liquefied gas, in order to completely atomize the paint inside the can, approximately the same amount or more of the liquefied gas is required as the paint. , usually can only be filled to less than half of the can capacity. Therefore, when considering the paint that scatters as mentioned above, the most effective paint that can adhere to the surface to be coated is, for example, a commercially available paint can (can volume 4
20m1), 90-120mj+ and can volume 2
It accounts for less than 5%, and its economic efficiency is extremely poor.

(2) Flammable gases such as D, M, E (dimethyl ether) and P, G (liquefied propane gas) are usually used as liquefied gases, which are highly dangerous, and therefore it is impossible to increase the coating capacity.

■ Spray coating has weak coating adhesion and easily peels off.

In addition, there are the above-mentioned problems, and in direct coating, (1) the applicator must be frequently impregnated with the coating material, and the impregnated coating material may drip onto the floor, etc., resulting in poor workability;

(2) He has sufficient skill to obtain an even and smooth coated surface, as there is a large difference in the thickness of the coated film between the beginning of the application, which contains enough paint, and (2) the thickness of the coated film after it has been rolled out.

■ It is necessary to carry the applicator and the paint container such as a handheld can with both hands, which makes working at heights dangerous.

■ - Many paint containers that have been opened several times are not able to be re-closed completely due to the paint on the edges and parts drying and solidifying during the coating process.
When stored for a long period of time, the paint may dry out and deteriorate in quality, resulting in poor reusability and poor economic efficiency.

It had the following drawbacks.

[Purpose of the invention]

The present invention connects a paint can and an applicator to ensure a stable and continuous supply of paint to the applicator, thereby making it possible to paint a product M with excellent workability, economy, and efficiency, thereby solving the problems mentioned above. The purpose is to provide a coating device that can solve the problem.

[Disclosure of the invention]

An embodiment of the present invention will be described below based on the drawings.

1 to 5 (bl), the coating device 1 of the present invention comprises a coating can 7 in which a can body 5 filled with a coating material 2 and a pressurized gas 3 is provided with a discharge port 25, and a coating section 9. A paint channel 10 whose one end communicates with the discharge port 25 and whose other end communicates with the application section 9
It is formed from an applicator 11 having a.

As shown in FIG. 2, the paint can 7 includes a can body 5 with both ends of a vertically long base cylinder 20 closed at upper and lower lI21, 22, and a drawing protrusion provided on the commercially available M21 middle of the can body 5. The paint dispensing tool 27 is fitted into the can body 5 and has a discharging port 25 at the upper end.
A pressurized gas 3 having a value of 30 or less is mixed with the paint 2 and filled. In this example, a liquefied gas such as DME or LPG is used as the pressurized gas 3, and it exists in the coating material 2 in a liquid or semi-dissolved state.

In this example, the father M21 has an upper plug part 21B recessed in the center hole of the upper lid part 21A that fits into the base cylinder 20, and
The upper plug part 21B is provided at its center with a constriction protrusion 26 which protrudes upward at a small height and has an external thread 30 formed around it.

In this example, the paint dispensing tool 27 includes an on-off valve 35 that is fitted and held in the throttle protrusion 26, and a flexible tube whose upper end communicates with the on-off valve 35 and whose lower end opens at the bottom surface of the can body 5. 36, and the on-off valve 35 is, for example, as shown in FIG. A piston 40 that slides up and down along vertical ribs 37C provided on the inner wall surface of the base cylinder portion 37A is loosely fitted into the shaped cylinder 37.

The piston 40 has the throttle protrusion 26 upper surface 2 on its upper surface.
A nozzle portion 42 protrudes through a small hole 41 provided at 6A, and a guide hole 43 extending downward from the discharge port 25 at the upper end of the nozzle portion 42 communicates with the small hole 45 below.

The piston 40 is urged upward by a spring piece 47 provided between the recess 46 provided at the lower part of the piston 40 and the step 39.
5 has its opening closed with a sealing material 49, and the narrow hole 45 opens inside the cylinder 37 at the lower end position of sliding.

Therefore, the on-off valve 35 acts as a one-way valve, and in this example, when the nozzle part 42 is pushed down, it passes from the opening at the lower end of the tube 36 through the small diameter part 37B and the base cylinder part 37A, and passes through the narrow hole 45 and the guide tube 37A. The first paint flow path 44 that passes through the hole 43 and communicates with the discharge port 25 can be opened, and the paint 2 pressurized by the pressurized gas 3 can be forced out from the discharge port 25 . Further, an operation button 50 is attached to the nozzle portion 42 of the paint can 7 formed in this manner, and an applicator 11 is connected to the operation button 50.

In this example, the operation button 50 includes a housing portion 51 and a housing portion 5 that are screwed together with the external thread 30 of the aperture projection 2-6.
1 so as to be movable up and down, and the lower end thereof is connected to the nozzle portion 42.
The connecting part 52 has a connecting part 52 that can be fitted into the upper end, and the connecting part 52 has a manual operation head 55 on the upper surface and a terminal 56 for connecting a hose on the side surface, respectively. an inner hole 57 communicating with the discharge port 25 and opening at the front end surface of the terminal 56;
The applicator 11 is connected to the terminal 56.

In this example, as shown in FIG. 4, the applicator 11 includes a connecting hose 59 fitted to the terminal 56, a vibro 1 communicating with the connecting hose 59 via a handle 60, and a vibro 1.
The applicator 9 has an applicator 9 that is attached to the applicator 9.

The applicator 9 is a roller in this example, and is made of hard paper, synthetic resin, etc., and has many small holes 62 around it.
It has a base pipe 63 comprising a tubular inner peripheral part 63A with a transparent inner peripheral part 63A, and an outer peripheral part 63B made of felt material, porous sponge material, etc. and attached to the outer surface of the inner peripheral part 63A by pasting or the like. , flanges 65 are attached to both ends of the base tube 63.

The flange 65 is connected to the inner peripheral portion 63. Flange part 6 that fits into the A end part
6 and a tube section 69 whose inner end is closed with a wall section 67,
By using a locking ring 70 and a sealing screw 71, the vibro 1, which passes through the wall portion 67, is rotatably supported together with the base tube 63, respectively.

Further, the application section 9 is located inside, that is, the base pipe 63 and the flange 65.
A space H is formed in between, and a side hole 61A- communicating with the space H is provided in the vicinity of the tip of the vibro 1. Therefore, one end of the applicator 11 communicates with the discharge port 25 through the inner hole 59A of the connecting hose 59, the inner hole 61B of the vibro 1, and the side hole 61A, and the other end communicates with the space H provided in the applicator section 9. A paint flow path IO is formed.

[Effect]

However, the coating device 1 of the present invention operates the on-off valve 35 together with the push button operation of the head 55 provided on the operation button 50, and the first
By opening the flow path 44, the coating material 2 filled in the can body 5 is forced out from the discharge port 25 by the pressurized pressure of the pressurized gas 3. Also, the paint 2 to be squeezed out is inserted into the inner hole 57 of the connecting part 52.
, through the coating flow path 10 to the cavity I of the application section 9, while being distributed through the small holes 62- provided in the inner circumference 63 and discharged to the outer circumference 63B-1. . Further, the coating material 2 is supplied to the surface of the outer circumferential portion 63B, that is, the coating surface, while being further uniformly dispersed by the effects of discharge pressure, capillary action, and the like.

As described above, the coating device 1 of the present application can automatically supply a uniform and stable coating material to the surface of the coating section 9 continuously by operating the operation button 50, thereby eliminating the need for frequent coating, which is a disadvantage of conventional direct coating. It is possible to easily perform the impregnating work and the coating work of the product'ff uniformly and smoothly without causing any dripping of the paint, etc. Moreover, since the work can be done with one hand, it is possible to improve the safety of work at heights.

Furthermore, since the applicator 11 is used, environmental pollution caused by paint scattering, which is a drawback of spray coating, can be prevented.

Furthermore, as in this example, the filtrated liquefied gas used as the pressurized gas 3 acts as a diluent that is mutually compatible with the filler coating material 2 in the can body 5, increasing its fluidity by reducing its viscosity. On the other hand, in the flow path of the paint flow path 10, the liquefied gas partially becomes bubbles as the internal pressure of the connection hose 59 decreases, thereby maintaining and improving its fluidity. Therefore, high viscosity and high solids content paints, which are extremely difficult to use with conventional spray systems, can be efficiently pumped out and pumped under low pressure. That's 100-150m7 per minute! This makes it possible to supply high-viscosity coating materials.

In addition, such liquefied gas has a length that completely evaporates into the atmosphere from the surface of the applicator, so there is no deterioration in the quality of the coated surface due to the formation of bubbles, and moreover, the coating material on the surface of the applicator is Because it returns to its original high viscosity state, - times of application is sufficient! 5! It is possible to obtain a greater thickness, greatly improve coating work efficiency, and prevent problems such as dripping or running of the paint on walls, ceilings, etc.

Furthermore, since the paint can 7 of the present application is of a type in which the paint 2 is extruded by the internal pressure of the pressurized gas 3, it cannot be used in the conventional spray type, which uses a jet of pressurized gas and requires large consumption of the gas. This makes it possible to use nonflammable vaporized gases such as chlorine gas and air, which were difficult to use, and can reduce production costs and improve safety.

Furthermore, the remaining 70% or more of the filled coating material 2 can be completely squeezed out using pressurized gas 3 with a capacity of 30% or less of the can volume, which increases the amount of coating material filled per can and improves economic efficiency. At the same time, the work of adding and replacing the paint can 7 is reduced and its usability is made convenient. In addition, when liquefied gas is used, the remaining coating material can be completely squeezed out using pressurized gas 3 of 5% or less based on the volume of the can, and the economical efficiency can be improved.

By interposing, for example, an extension rod between the handle 60 and the perve 61, the coating device 1 can efficiently and safely perform coating work at high places.

Since the inside of the paint can 7 is sealed during use, it can be stored without deterioration of the paint, and for long-term storage, for example, a gas can filled with only pressurized gas 3 can be prepared separately. It is preferable to squeeze out the coating material 2 remaining inside the applicator 11, and then wash and store it.

Further, other embodiments of the operation button 50 are shown in FIGS.

In the figure, the operation button 50 includes an internal threaded portion 80 that is screwed onto the external screw 30, and a nozzle portion 4 that is screwed into the internal screw 80.
An operation valve 85 is provided in the cavity 82 of the housing 83, which has a locking piece 81 that operates the opening/closing valve 35 by pushing down the housing 83, and has a cavity 82 inside thereof that communicates with the discharge port 25.

The operating valve 85 is connected to a partition wall 86 that partitions the upper piece 83A of the housing 83 and the empty space 82 into upper and lower small chambers 82A and 82B.
A valve portion 85B is expanded at the lower end of the base shaft 85A passing through the base shaft 85A, and a head 85C is protruded from the upper end. Also, operation valve 85
is biased upward by a spring piece 90 provided between the locking ring 89 attached to the base shaft 85A and the partition wall 86, and the valve portion 8
The electrical connection between the small chambers 82A and 82B can be cut by the pressure contact between the small chambers 5B and the partition wall 86. Furthermore, by forming a groove 1 in the base shaft 85A, the operation valve 85 can provide conduction between the small chambers 82A and 82B together with the push button of the head 85C.

In this example, as shown in FIG. 5(b), engaging pieces 93A and 93[3 are formed on the lower surface of the upper piece 83A and the circumferential surface of the base shaft 85A, so that the valve portion 85B is formed at the engaging position of the engaging pieces 93A and 93B. The valve portion 85B can be closed and the valve portion 85B can be held open in the non-meshing position by pressing or twisting the head 85C, making the applicator more convenient to use during continuous use of the first coating device. Further, other embodiments of the paint can 7 are shown in FIGS. 6(a-1) to ('b). In FIG. 6(a), a piston 96 is used, and in FIGS. 6(b) to (d), The paint can 7 has a double structure in which the paint 2 and the pressurized gas 3 are separated by a thin pressure container 97 made of synthetic resin, aluminum, etc. These double structures can be used upside down. In addition to making it possible and improving its usability,
It is possible to prevent the pressurized gas 3 from leaking to the outside, and it is possible to improve safety against ignition and the like. Further, FIG. 7 shows a case where the applicator 9 is a brush.

In the figure, the applicator 9 includes a cap 100 in which the recess 98 of a base body 99 having a recess 98 formed at the tip of the handle 60 is implanted with an outer hair body 100 and a small hole 62 communicating with the recess 98 is formed. A nipple 102, whose one end is connected to the connecting hose 59 and whose other end is electrically connected to the recess 98, is fixed to the base body 99 by a NAND metal fitting 103- or the like.

Further, as the application part 9, a porous sponge having small communicating pores, a pad such as a thick carpet or felt with bristles implanted therein can also be suitably used.

〔Effect of the invention〕

As mentioned above, the coating device of the present invention can stably and continuously automatically supply coating material to the coating tool by linking the coating material amount and the coating tool, so it has excellent workability and can efficiently perform high-quality coating. It can be done well and safely. In addition, it has many effects, such as making it convenient to carry the amount of coating material, and increasing economical efficiency since the amount of coating material to be filled can be greatly increased.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing how the present invention is used, FIG. 2 is a sectional view showing the amount of coating material, FIG. 3 is a sectional view showing the on-off valve, FIG. 4 is a sectional view showing the applicator 11, and FIG. Figures 5 (al to (bl) are sectional views and perspective views showing other embodiments of the operation button, Figure 6+a) to fdl are sectional views showing other embodiments of the amount of coating material, and Figure 7 is a coating section. It is a cross-sectional view showing another example. 2- Paint, 3- Pressurized gas, 5... Can body, 6-...
・Discharge port, 7-Amount of coating material, 9--Applying part, 10--Painting channel, IL--Applicator, 35--Opening/closing valve.

Claims (5)

[Claims] (1) A paint can that is filled with paint and pressurized gas and has a discharge port that opens upon operation and communicates with an on-off valve that presses out the paint pressurized by the pressurized gas. 1. A coating device comprising: an applicator including an applicator for coating a paint, and a paint channel having one end communicating with the discharge port and the other end communicating with the applicator. (2) The coating device according to claim 1, wherein the coating can is filled with a pressurized gas having a volume percentage of 30 or less based on the volume of the can, mixed with the coating material. (3) The coating device according to Claims 1 and 2, wherein the coating section of the applicator is a roller. (4) The coating device according to Claims 1 and 2, wherein the coating section of the applicator is a brush. (5) The coating device according to Claims 1 and 2, wherein the coating section of the applicator is a pad.