KR20230161303A - A paint roller and a spray gun combine type painting device - Google Patents

Abstract

The present invention relates to a painting device for both a paint roller and a spray gun. More specifically, the present invention relates to a painting device for both a paint roller and a spray gun that can be used as both a paint roller for manual work and a spray gun for automatic work with one equipment. It's about devices.
For this purpose, a body having a discharge hole formed at the tip and a hollow internal space is formed; a piston that is provided to move back and forth in the internal space of the body and has a first injection passage penetrating both sides; a suction valve installed at the front end of the body to generate suction force to suck in the paint solution by generating negative pressure in the internal space due to movement of the piston; Painting means provided so that the paint solution discharged through the discharge hole can be painted on the painted surface; A support cap is screwed to the rear end of the body and has a support hole having an inner diameter corresponding to the outer diameter of the piston so that the piston can be installed through it, thereby maintaining the straightness of the piston when the piston moves back and forth. and a piston restraining cap screwed to the outer circumferential surface of the support cap and having threaded holes formed on both sides opposite the support hole, wherein the piston includes a handle for holding the piston, and the handle portion includes the piston restraint cap. It is screwed into the threaded hole and forms a second injection passage communicating with the first injection passage, and the painting means screws a piston restraint cap to the support cap to restrain the movement of the piston. 2. A paint roller and spray gun combined painting device, characterized in that it is a spray gun coupled to the spray passage or a paint roller coupled to the discharge hole in a state in which the piston is free to move by releasing the piston restraint cap from the support cap. to provide.

Description

{A paint roller and a spray gun combine type painting device}

The present invention relates to a painting device that combines a paint roller and a spray gun, and more specifically, to a painting device that uses a paint roller and a spray gun that allows an operator to select and use a paint roller and a spray gun as one piece of equipment.

In general, to decorate the interior and exterior of a building beautifully, wallpaper or painting is done using paint. The painting work is done manually using a paint roller, and a spray gun spraying method using pneumatic pressure is used. While pneumatic spray gun spraying provides convenience in painting, working conditions are limited in narrow or closed work spaces, as spraying paint can cause worker safety accidents. Since the operator cannot finely adjust the sprayed range, there is a drawback that the operator must paint with a paint brush directly when working on complex parts or finishing work. Furthermore, there is a problem that it is not environmentally friendly due to paint scattering.

On the other hand, painting work using a paint roller is done by having the worker wet the paint roller's brush with a paint solution and then roll the paint roller on the wall of the building to be applied. The worker paints areas such as corners that the paint roller cannot reach. Finish the work by painting with a brush. However, painting work using a paint roller caused great inconvenience as the worker had to wet the paint roller one by one in a separate paint bucket before using it. In particular, after soaking the paint roller in the paint solution, the paint solution leaked while moving to the application surface. There is a problem that it falls to the floor and makes the work space messy. In addition, since it is difficult to regularly control the paint solution supplied to the roller, if the paint is excessively wet, there are problems in work technique such as the paint solution splashing or flowing along the application surface during the painting process. Therefore, only skilled workers can use it. There is a problem that it is not easy to paint.

As can be seen from this, spray painting and paint roller painting each have their own advantages, so it is desirable for workers to select and perform them according to the working environment. However, in the related art, a painting device using a paint roller and a painting device using a spray gun are provided, so there is an inconvenience in choosing between different types of equipment, and equipment management is inconvenient because each equipment must be managed separately.

Republic of Korea Registration No. 10-2161397 Republic of Korea Publication No. 10-2011-0108812

The present invention was created to solve the above problems, and the purpose of the present invention is to provide a paint roller and sprayer that allows workers to easily select and use the paint roller method and spray spray method according to the work environment with one equipment. The aim was to provide a coating device for both guns.

In order to achieve the above object, the present invention includes a body having a discharge hole formed at the tip and a hollow internal space; a piston that is provided to move back and forth in the internal space of the body and has a first injection passage penetrating both sides; a suction valve installed at the front end of the body to generate suction force to suck in the paint solution by generating negative pressure in the internal space due to movement of the piston; Painting means provided so that the paint solution discharged through the discharge hole can be painted on the painted surface; A support cap is screwed to the rear end of the body and has a support hole having an inner diameter corresponding to the outer diameter of the piston so that the piston can be installed through it, thereby maintaining the straightness of the piston when the piston moves back and forth. and a piston restraining cap screwed to the outer circumferential surface of the support cap and having threaded holes formed on both sides opposite the support hole, wherein the piston includes a handle for holding the piston, and the handle portion includes the piston restraint cap. It is screwed into the threaded hole and forms a second injection passage communicating with the first injection passage, and the painting means screws a piston restraint cap to the support cap to restrain the movement of the piston. 2. A paint roller and spray gun combined painting device, characterized in that it is a spray gun coupled to the spray passage or a paint roller coupled to the discharge hole in a state in which the piston is free to move by releasing the piston restraint cap from the support cap. to provide.

At this time, it is preferable that an opening and closing cap is provided to open and close the second injection passage of the handle.

In addition, a fixed block having an insertion hole communicating with the discharge hole is coupled to the discharge hole, and when the painting means is used as a spray gun, a scattering prevention cap in the form of an expanded pipe whose inner diameter increases as the distance from the discharge hole is coupled to the insertion hole. desirable.

The paint roller and spray gun combined coating device according to the present invention has the following effects.

First, since the present invention can optionally combine a paint roller and a spray gun in one body for supplying a paint solution, both a paint roller and a spray spray method can be used with one device. Accordingly, the present invention has the effect of providing an optimized working environment because the paint roller and spray spraying method can be selected depending on the working environment.

Second, the present invention allows the paint solution to be supplied to the paint roller using a piston method when using a paint roller, so there is no need to apply paint while immersing the paint roller in the paint solution, thereby improving the convenience of painting work. , has the effect of keeping the working environment clean. Furthermore, the present invention has the effect of finely controlling the supply of paint solution through the piston method.

Third, the present invention has the effect of providing an eco-friendly working environment by minimizing the scattering of paint around the work area through the anti-scattering cap when using the spray gun spraying method.

Figure 1 is an exploded view showing a paint roller and spray gun combined coating device according to a preferred embodiment of the present invention.
Figure 2 is a diagram showing a painting device combining a paint roller and a spray gun according to a preferred embodiment of the present invention.
Figures 3a to 3c are cross-sectional views of a paint roller and spray gun combined painting device according to a preferred embodiment of the present invention, and are diagrams showing the state in which the painting process is performed when a paint roller is used as a painting means.
Figure 4 is a cross-sectional view of a painting device combining a paint roller and a spray gun according to a preferred embodiment of the invention, showing a state in which a spray gun is used as a painting means.

The terms or words used in this specification and claims are not to be construed limited to their ordinary or dictionary meanings, and the inventor can appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted based on the meaning and concept consistent with the technical idea of the present invention.

Hereinafter, a painting device for combining a paint roller and a spray gun (hereinafter referred to as a "painting device") according to a preferred embodiment of the present invention will be described with reference to the attached FIGS. 1 to 4.

The painting device allows workers to easily select between manual painting using a paint roller and automatic spray painting using a spray gun. The painting device can be used in an optimized manner for the working environment, and enables environmentally friendly work by providing a clean working environment and preventing paint solution from scattering.

As shown in FIGS. 1 to 3A, the painting device includes a body 100, a piston 200, an intake valve 300, a support cap 400, a piston restraint cap 500, and a painting means. Includes (600).

The body 100 constitutes the exterior of the painting device and is provided as a hollow cylinder that accommodates the paint solution and has an internal space 100a for reciprocating movement of the piston 200. Both ends of the body 100 are open, and a discharge cap 110 is coupled to the front end of the body 100. The discharge cap 110 forms a discharge hole 111 through which the paint solution contained in the internal space 100a of the body 100 is discharged. At this time, the inner diameter of the discharge cap 110 gradually increases toward the discharge hole 111. It is desirable to form it small. At this time, the fixing block 120 is coupled to the discharge cap 110. The fixing block 120 is configured to couple a paint roller or an anti-scattering cap, which will be described later, to the discharge cap 110. The fixing block 120 includes a guide 121 formed with an insertion hole 121a communicating with the discharge hole 111, and the inner diameter of the fixing block 120 can be press-fitted to the outer peripheral surface of the discharge cap 110. formed by size. Meanwhile, a rear end through hole 130 is formed at the rear end of the body 100, as shown in FIG. 3A. The rear end through hole 130 communicates with the internal space 100a of the body 100, and is provided in a size that allows the rod of the piston 200, which will be described later, to enter and exit the internal space 100a. At this time, an O-ring 131 is installed in the rear end hole 130 to maintain airtightness of the internal space 100a. In addition, as shown in FIGS. 1 and 3A, threads for screw connection with the support cap 400, which will be described later, are formed on the outer peripheral surface of the rear end of the body 100.

The piston 200 moves back and forth in the internal space 100a of the body 100 to suck the paint from the paint bucket T into the internal space 100a, or to pump the paint solution contained in the internal space 100a through the discharge hole ( 111) It plays a role in generating pressure to discharge to the outside. Additionally, the piston 200 provides a passage through which the paint solution is sprayed through the spray gun. That is, the piston 200 can manually spray the paint solution through the operator's manual work, and is configured to automatically spray the paint solution through the operation of the spray gun. As shown in FIG. 1, the piston 200 includes a packing portion 210, a rod 220, and a handle portion 230. The packing unit 210 is configured to maintain airtightness around the inner surface of the internal space 100a of the body 100, and includes a plurality of O-rings 211. That is, the packing part 210 is used to keep the inner surface of the body 100 airtight so that the paint solution does not leak based on the position of the packing part 210 while the O-ring 211 is in close contact with the inner peripheral surface of the body 100. It is a composition. The rod 220 extends from the packing portion 210 toward the other end (rear end) of the body 100. The diameter of the rod 220 is preferably smaller than the diameter of the packing portion 210, and is formed to have a smaller outer diameter than the inner diameter of the rear end through hole 130. At this time, as shown in FIGS. 1 and 3A, threads are formed on the outer peripheral surface of the end of the rod 220 exposed outside the body 100. The handle portion 230 is provided for gripping when the operator reciprocates the piston 200, and is installed at the end of the rod 220. The handle portion 230 is preferably divided into the rod 220, and a screw groove 231 is formed in the handle portion 230 as shown in FIG. 1 so that the handle portion 230 can be screwed together. At this time, it is preferable that an O-ring 232 is installed in the screw groove 231 of the handle portion 230 to maintain airtightness. In addition, screw threads are formed on the outer peripheral surface of the handle portion 230 as shown in FIG. 1, and the screw threads are configured for screw connection with the piston restraining cap 500, which will be described later, as shown in FIG. 3A. Meanwhile, an injection passage 240 is formed in the piston 200. The spray passage 240 is a passage that allows the paint solution to pass through the inside of the piston 200 and be discharged to the discharge hole 110, and spans the piston (packing part 210) - rod (220) - handle part (230). 200) It is formed through the inner center. That is, the injection passage 240 is provided with both sides of the piston 200 open. At this time, for convenience of explanation, the injection passage 240 is divided into a first injection passage 241 formed in the rod 220 and a second injection passage 242 formed in the handle portion 230. At this time, it is preferable that the inner peripheral surface of the second injection passage 242 formed in the handle portion 240 has threads as shown in FIGS. 3A and 4. This is because the second spray passage 242 of the handle portion 230 must be screw-coupled with a spray gun to be described later.

The suction valve 300 allows the paint solution in the paint container T to be sucked into the internal space 100a of the body 100, and is preferably installed on the discharge cap 110. The suction valve 300 is opened when negative pressure is generated in the internal space 100a by the movement of the piston 200, and the paint solution in the paint can T is sucked into the internal space 100a. At this time, the intake valve 300 is preferably a check valve that can be opened in one direction only toward the internal space 100a. With this configuration of the suction valve 300, even if positive pressure is generated in the internal space 100a by the movement of the piston 200, the paint solution does not leak out of the body 100 through the suction valve 300. .

The support cap 400 serves to guide the piston 200 to maintain straightness during the reciprocating movement of the piston 200 for inhaling and discharging the paint solution. The piston 200 enters and exits the rear end hole 130 of the body 100 when reciprocating, and during this process, the support cap 400 supports the piston 200 so that the piston 200 can move in a straight line. To this end, a support hole 410 having an inner diameter corresponding to the outer diameter of the rod 220 of the piston 200 is formed in the support cap 400. In addition, the support cap 400 is preferably provided so as to be detachable from the body 100, and more preferably is provided to be screwed on. For this purpose, threads are formed on the inner peripheral surface of the support cap 400 for screw connection with the rear end of the body 100, as shown in FIGS. 1 and 3A. In addition, as shown in FIGS. 1 and 3A, threads are formed on the outer peripheral surface of the support cap 400 for screw connection with the piston restraint cap 500, which will be described later.

The piston restraint cap 500 serves to restrain the piston 200 from moving during painting work using a spray gun. That is, during automatic spraying work using a spray gun, the piston 200 must be fixed in the body 100 without moving due to spray pressure, etc., and the piston restraint cap 500 is used to keep the piston 200. It serves to bind to the body 100. To this end, the piston restraining cap 500 is provided so that it can be screwed between the support cap 400 and the handle portion 230 of the piston 200, as shown in FIG. 3A. As shown in FIGS. 1 and 3A, the piston restraining cap 500 is formed with a threaded hole 510 through which the handle portion 230 passes, and the screw hole 510 is a threaded portion formed on the outer peripheral surface of the handle portion 230. Form threads so that they can be screwed together. Meanwhile, an opening/closing cap 520 is connected to the piston restraint cap 500. The opening/closing cap 520 is a component for shielding the second injection passage 242 exposed outside the body 100, and serves to open and close the second injection passage 242 formed in the handle portion 230 of the piston 200. Do it.

The painting means 600 is configured to apply the paint solution discharged through the discharge hole 111 to the object to be painted, and includes a paint roller 610 that allows the worker to paint manually and a paint roller 610 that allows the worker to paint automatically. It may be provided as a spray gun 620 capable of automatically spraying the solution. In other words, the painting means 600 is provided as a paint roller 610 and a spray gun 620 that the worker can select according to the working environment.

First, let's look at the case where the painting means 600 is used as a paint roller 610. The paint roller 610 is preferably composed of a head portion 611 and a connecting pipe 612, as shown in FIGS. 1 to 3A. The head part 611 is a part that performs painting while rolling on the object to be painted, and is provided in a hollow cylindrical shape. Inside the head portion 611, a rotation shaft 611a is installed in the longitudinal direction of the head portion 611, and the rotation shaft 611a has a hollow shape. The rotation shaft 611a is provided to rotate the head portion 611 and also serves as a passage for supplying the paint solution into the interior of the head portion 611. For this purpose, a plurality of first injection holes 611b are formed on the rotation shaft 611a. In addition, a plurality of second injection holes 611c are formed on the outer peripheral surface of the head portion 611, and a brush B surrounding the second injection holes 611c is installed. The connection pipe 612 connects the head portion 611 to the discharge hole 111 of the body 100 and provides a conduit through which the paint solution discharged from the discharge hole 111 is supplied to the rotating shaft 611a, precisely. It is coupled between the rotation axis 611a of the head portion 611 and the guide 121 of the fixed block 120.

When the painting means 600 is used as a spray gun 620, the spray gun 620 is connected to a paint solution supply device (not shown) and is screwed to the second spray passage 242 of the handle portion 230. It is provided so that you can In addition, the painting means 600 further includes a shatterproof cap 630, and the shatterproof cap 630 prevents the paint solution from scattering around the work area during the process of spraying the paint solution through the spray gun 620. It plays a role in blocking and minimizing. As shown in FIGS. 1 and 4, the anti-scattering cap 630 is provided in the form of an expanded pipe whose inner diameter increases as the distance from the discharge hole 111 increases.

Hereinafter, the combination of a painting device equipped with a paint roller configured as described above and painting work using the same will be described.

As shown in FIGS. 2 and 3A, the operator couples the fixing block 120 to which the guide 121 is coupled to the discharge cap 110. Thereafter, the operator inserts the connection pipe 612 of the paint roller 610 into the insertion hole 121a of the guide 121 to match the discharge hole 111 and the connection pipe 612. Additionally, the worker screws the support cap 400 to the rear end of the body 100, as shown in FIG. 3A. At this time, the end of the rod 220 of the piston 200 passes through the support hole 410 and is exposed to the outside, and the operator screws the handle portion 230 to the end of the rod 220. Afterwards, the worker screws the piston restraint cap 500 to the support cap 400 and the handle 230, and blocks the opening/closing cap 520 by inserting it into the second injection passage 242 of the handle 230. , the combination of the painting device is completed.

With the paint roller 610 installed in the body 100 in this way, the worker connects a pipe such as a hose (not shown) to the paint bucket so that the paint solution in the paint bucket T can be sucked in through the suction valve 300. Connected between (T) and suction valve (300). Thereafter, in order to move the piston 200, the operator loosens the piston restraining cap 500 as shown in FIG. 3B to free the movement of the piston 200, and pulls the piston 200 from the body 100. withdraw. At this time, as a negative pressure is formed in the internal space 100a of the body 100, the paint solution in the paint container T enters the internal space of the body 100 through the suction valve 300, as shown in FIG. 3B. flows into (100a). At this time, even if the paint solution flows into the spray passage 240 of the piston 200 from the internal space 100a, the opening and closing cap 520 blocks the second spray passage 240, so the paint solution flows into the piston 200. No leakage occurs.

Next, when the paint solution flows into the internal space 100a of the body 100, the operator pushes the piston 200 to generate positive pressure in the internal space 100a of the body 100. Accordingly, the paint solution is discharged to the connection pipe 612 of the paint roller 610 through the discharge hole 111 of the discharge cap 110. At this time, in the process of discharging the paint solution into the discharge hole 111, the suction valve 300 is a check valve that opens only toward the internal space 100a, so the paint solution is discharged out of the body 100 through the suction valve 300. No leaks occur. Thereafter, the paint solution discharged through the connection pipe 612 flows into the rotating shaft 611a and then flows into the interior of the head portion 611 through the first injection hole 611b as shown in FIG. 3C. Afterwards, the paint solution inside the head part 611 leaks out through the second injection hole 611c formed on the outer peripheral surface of the head part 611 and wets the brush B. In this way, when the paint solution is stained on the brush (B), the worker performs painting work while rolling the head portion 611 on the object to be painted. Thereafter, when the paint solution is consumed in the brush (B), the operator pushes the piston 200 into the body 100 to replenish the paint solution into the interior of the head portion 611, and then performs the painting work again.

Meanwhile, when the painting means 600 is used as a spray gun 620, the combination and operation of the painting device are as follows.

As shown in FIG. 4, the worker couples the anti-scattering cap 630 to the guide 121 of the fixing block 120. The scattering prevention cap 630 is inserted into the insertion hole 121a of the guide 121 and communicates with the discharge hole 111 of the discharge cap 110. Afterwards, the operator separates the opening/closing cap 520, which shields the second spray passage 242 of the handle 230, from the handle 230, and installs the spray gun 620 between the piston 200 and the handle 230. ) is coupled to the second injection passage 242. At this time, the piston 200 is completely inserted into the internal space 100a of the body 100, and the second injection passage 240 of the handle 240 forms a screw thread, so the spray gun 620 and Pistons 200 can be easily screwed together. At this time, although not shown in detail, the spray gun 620 is connected to a separate paint supply device.

In this state, the spray gun 620 and the anti-scattering cap 630 are coupled to the body 100, and the operator pulls the lever of the spray gun 620 to spray the paint solution toward the object to be painted. At this time, the paint solution is discharged to the discharge hole 111 through the spray passage 240 of the piston 200 by the spray gun 620, and the discharged paint solution is excessively spread around by the anti-scattering cap 630. Since it does not scatter, the painting device can minimize surrounding contamination caused by paint solution scattering.

As described so far, the paint roller and spray gun combined painting device according to the present invention allows the operator to select and combine the paint roller 610 and the spray gun 620 in one body 100, so Optimal painting work can be performed according to the environment, and when painting using the paint roller 610, paint can be supplied through the piston method without the need to immerse the paint roller 610 in the paint bucket (T). Not only does it make painting easier, but it also keeps the surrounding work environment clean.

Although the present invention has been described in detail with respect to the described embodiments above, it is obvious to those skilled in the art that various changes and modifications are possible within the technical scope of the present invention, and such changes and modifications naturally fall within the scope of the appended patent claims.

100: body 100a: internal space
110: discharge cap 111: discharge hole
120: fixed block 121: guide
121a: Insertion hole 130: Rear end through hole
131,211,232, : O-ring 200 : Piston
210: packing part 220: rod
230: handle 231: screw groove
240: injection passage 241: first injection passage
242: Second injection passage 300: Suction valve
400: support cap 410: support hole
500: Piston restraint cap 510: Screw hole
520: Opening/closing cap 600: Painting means
610: Paint roller 611: Head part
611a: Rotating shaft 611b: First injection hole
611c: second injection hole 612: connector
620: Spray gun 630: Anti-scattering cap
T : Paint bucket B : Brush

Claims (3)

A body in which a discharge hole is formed at the tip and a hollow internal space is formed;
a piston that is provided to move back and forth in the internal space of the body and has a first injection passage penetrating both sides;
a suction valve installed at the front end of the body to generate suction force to suck in the paint solution by generating negative pressure in the internal space due to movement of the piston;
Painting means provided so that the paint solution discharged through the discharge hole can be painted on the painted surface;
A support cap is screwed to the rear end of the body and has a support hole having an inner diameter corresponding to the outer diameter of the piston so that the piston can be installed through it, thereby maintaining the straightness of the piston when the piston moves back and forth. and
It is screwed to the outer peripheral surface of the support cap and includes a piston restraint cap formed with a threaded hole penetrated on both sides opposite the support hole,
The piston includes a handle for holding the piston, wherein the handle is screwed to the threaded hole of the piston restraint cap and forms a second injection passage communicating with the first injection passage,
The painting means is,
It is a spray gun coupled to the second injection passage of the handle in a state in which the movement of the piston is restricted by screwing a piston restraint cap to the support cap, or
A paint roller and spray gun combined coating device, characterized in that the paint roller is coupled to the discharge hole in a state in which the piston restraint cap is released from the support cap to allow free movement of the piston. According to paragraph 1,
A painting device that combines a paint roller and a spray gun, characterized in that an opening and closing cap is provided to open and close the second spray passage of the handle. According to claim 1 or 2,
A fixed block having an insertion hole communicating with the discharge hole is coupled to the discharge hole,
When the painting means is used as a spray gun, a paint roller and spray gun combined painting device, characterized in that the insertion hole is coupled with an anti-scattering cap in the form of an expanded pipe whose inner diameter increases as the distance from the discharge hole increases.

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