JP2002153785A - Scattering preventing airless coating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform coating even to a remote part in a scattering preventing airless coating machine capable of preventing sprayed paint mist from scattering to the peripheral area. SOLUTION: The scattering preventing airless coating machine is constituted by attaching a hollow member opened at a part hereof so as to surround the leading end part of the gun of an airless coating machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airless painting machine capable of preventing a sprayed paint mist from scattering around the paint mist, and can easily perform painting on a remote portion.

[0002]

^2. Description of the Related Art An airless coating machine discharges a pressurized liquid paint from a spray nozzle tip at the tip of a gun at a high pressure (for example, 80 to 150 kgf / cm ² ), atomizes it in the air, and coats it. It is a coating machine that applies to painted objects.
This product has advantages such as less scattering of paint mist, good application efficiency, good atomization efficiency of paint, applicable to high viscosity paint, and excellent workability due to large spray pattern. It is widely used for painting interior and exterior walls of buildings.

[0003] However, when an exterior wall of a building is painted with an airless painting machine, the sprayed paint mist is prevented from being scattered around the building when the building is in close proximity to another building or where traffic is heavy. For this reason, it is necessary to form a scaffold, stretch a net, and pay close attention to painting, so that there has been a defect that much labor and time are required.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned deficiencies in airless coating, and as a result of intensive studies, it has been found that a partially opened hollow member surrounds a gun tip of an airless coating machine. It has been found that the object can be achieved by such mounting, and the present invention has been completed.

[0005] That is, the present invention is characterized in that a partially opened hollow member is attached so as to surround the tip of a gun of an airless coating machine, and the scattering-preventing airless coating machine (hereinafter referred to as "the main coating machine"). About).

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present coating machine, a known airless coating machine for mounting a hollow member can be used.

[0007] The principle of atomization of liquid paint by an airless painting machine is similar to a water gun, and paint ejected at high speed from a nozzle collides with air to be atomized, and the degree often affects the amount of paint ejected. . The apparatus is composed of a liquid paint pump, a pressure-resistant paint hose, an airless paint gun, and a spray nozzle tip attached to the tip of the gun to atomize the paint. As a pump, for example, an air-driven type,
Hydraulic drive type, electric type, etc. can be mentioned, and the electric type is often used for outdoor painting.

In the present coating machine, the hollow member attached to the tip of the gun of the airless coating machine is for preventing the sprayed paint mist from scattering around.

More specifically, the hollow member is in the form of a bag made of a sheet or a film, and at least the gun tip mounting portion (a), the paint jetting portion (b) and the opening (c) communicate with the outside and are opened. ing. That is, the gun tip of the airless coating machine is inserted into the gun tip mounting portion (a) into the hollow member, and the liquid paint ejected from the gun tip is opened (c).
The particles are atomized while receiving the resistance of the air caught in the hollow member from the inside, and are discharged from the paint ejection portion (b) to the outside of the hollow member and applied to the object to be coated.

Although the shape of the hollow member is not particularly limited, it is preferable that the gun tip mounting portion (a) is thin and the paint jetting portion (b) is wide, and has a divergent shape. For example, the gun tip mounting part (a) may be opened so that the gun tip of the airless coating machine can be inserted into the hollow member, while the paint jetting part (b) has a spray pattern of atomized paint. Suitably it is open to be included.

The opening (c) is for introducing air from the outside into the hollow member, and its shape is not particularly limited. For example, when a sheet or film having holes formed in a mesh or spots is used as the hollow member, these meshes or spots can be used as the openings (c), or the openings are partially provided. Can also be used as the opening (c). In particular, it is preferable to form a mesh or a spot because the spray pattern can be visually observed from the outside of the hollow member.

Although the size of the hollow member is not particularly limited,
Considering the installation to the gun tip of the airless coating machine and the workability of painting, the paint spraying part (b) from the gun tip
10 to 30 cm, especially 15 to 20 cm up to the tip, and the length of the widest part of the paint jetting part (b) is 10 to 50 c.
m, particularly preferably 20 to 30 cm. In particular, if the distance from the gun tip to the tip of the paint jetting part (b) is made to coincide with the coating distance from the gun tip to the surface to be coated, coating is performed while the tip is in contact with or close to the workpiece. This is preferable because the coating can be performed uniformly.

The material of the hollow member may be any material as long as it does not deteriorate or deform due to paint, and may be made of metal or plastic.

According to the present coating machine, the liquid paint jetted from the gun tip of the airless coating machine is atomized by the resistance of the air caught in the hollow member through the opening (c),
Since the paint is ejected from the paint ejection portion (b) to the outside of the hollow member and applied to the object, the atomized paint is protected by the inside of the hollow member, and scatters around the object except for coating the object. There are few things. In addition, the scattering of mist due to the wind is protected by the hollow member and the spray pattern is not disturbed,
Pollution of the surroundings was almost eliminated.

Further, the present invention provides a remote scattering device in which the above-mentioned airless coating machine for preventing scattering is mounted on one end of a handle-length pole and the ON / OFF control of the air fed to the coating machine is enabled on the other end. It also includes a prevention airless coating machine (hereinafter, referred to as "the main coating machine with a pattern length").

In the present coating machine with a pattern length, the pressurized air is used to supply air (assist air) to a coating material which is difficult to be atomized due to its high viscosity and viscous properties, thereby promoting atomization. , The pressure is usually 0.1-0.5M
It is suitably within the range of pa.

By attaching a pattern length pole to the present coating machine, remote coating becomes possible and workability is improved. For example, when using this machine with a pattern length for painting floors and roofs, workers can paint while standing, even if they do not bend, making work easier and improving efficiency. Was.

First, one end of the pattern-length pole is attached to the above-mentioned coating machine, and a paint hose and a hose for assisting air, which are provided in the coating machine, for feeding the liquid paint are arranged along the pattern-length pole. It is extended to the vicinity of the end, and a pressure feeding ON / OFF device for the pressure air is attached in the vicinity.

The handle-length pole is preferably lightweight and resistant to bending, and can be made of either metal or plastic. Its length is about 50 to about 200 cm and its thickness is about 2 to 6 cm.
cm is suitable, and it is more preferable that the length can be freely adjusted. As a pressure ON / OFF device for pressure air,
A cock type known per se or the like can be used.
The ON / OFF control of the spraying of the liquid paint from the gun tip can be performed by the ON / OFF device.

Further, it is possible to change the angle of the gun tip portion of the main coating machine and the main coating machine with a handle length. This makes it possible to freely change the spray pattern of the atomized paint in both the vertical direction and the horizontal direction, thereby improving coating workability.

[0021]

An embodiment of the present invention will be described.

Example 1 Painting conditions, electric plunger pump (Ultra Mac 1)
595 (trade name, manufactured by Graco), paint hose: 1/4 inch × 20, air hose: 1/4 inch × 20, spray pressure: 3 to 5 Mpa, air pressure: 0.1 to 0.2 Mp
a, spray distance: 22-25 cm, discharge amount: 450-
560 cc / min, coating amount: 150 to 200 / m ² (25
４０40 μm), coating gun: automatic airless gun (air assist type), made by Tokyo Dice, nozzle 615 (made by Graco), pattern length pole: length 150 cm, length adjustment 80-1
50 cm, diameter 25 mm, hollow member: length 20 cm, tip width 25 cm, 200 mesh net (with protective angle), paint: silicone resin (for roof), paint viscosity: 2
0-30 seconds / IHS cup, coating material: roof, windproof net: none, area: 100 m ² , coating environment: sunny, coating temperature: 24-28 ° C., coating humidity: 60%, wind speed 1-3 m /
Second, coating time: 2 hours, coating result: good finish, little dust scattering.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D073 AA01 BB03 CA06 CA15 4D075 AA04 AA22 AA90 4F033 RA14 RA20 RD08 RD09

Claims (5)

[Claims] 1. An airless painter for preventing shattering, wherein a hollow member partially open is mounted so as to surround a tip of a gun of the airless painter. 2. A scatter prevention airless coating machine according to claim 1 is mounted on one end of a handle length pole, and a scatter prevention air for remote use is enabled at the other end of the airless coating machine. Airless painting machine. 3. The scattering-preventing airless coating machine according to claim 2, wherein the length of the handle-length pole can be adjusted. 4. The anti-scattering airless coating machine according to claim 2, wherein the spray direction of the anti-scattering airless coating machine attached to one end of the handle length pole can be freely adjusted. 5. The anti-scattering airless coating machine according to claim 2, wherein the air fed to the airless coating machine is for air mixing.