JPH06154671A - Spray coating device - Google Patents

Abstract

PURPOSE:To reduce maintenance load such as cleaning by restricting the scatter range of coating material mist at the end part of coating range of a material to be coated. CONSTITUTION:In a spray coating device 10, air blow nozzles 21, 22 are attached to the side part of a spray gun 11 and are operated to blow at the time when the relative moving position of the spray gum 11 to the coating range W of the material 1 to be coated is positioned at a position corresponding to the end part of the coating range W.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray coating device.

[0002]

2. Description of the Related Art Conventionally, as a spray coating device for an object to be coated such as a wall panel, a spray gun can be moved relative to the coating range of the object to be coated, as described in JP-A-58-112063. There is something. In this spray coating device, the paint sprayed by the spray gun is moved in the process of relative movement between the position where the spray gun corresponds to one end of the coating range of the object to be coated and the position where it corresponds to the other end. Can be sprayed on.

[0003]

However, in the prior art, the mist of the paint sprayed by the spray gun at the position corresponding to the end of the coating range of the object to be coated scatters around the end of the coating range of the object to be coated. And stain the surrounding area. For this reason, the maintenance load such as cleaning on the coating line is great.

The present invention, in a spray coating apparatus, limits the scattering range of the paint mist at the end of the coating range of the object to be coated,
The purpose is to reduce the maintenance load such as cleaning.

[0005]

SUMMARY OF THE INVENTION The present invention is a spray coating apparatus in which a spray gun can be moved relative to a coating range of an object to be coated, and is attached to a side portion of the spray gun in a direction along the relative movement direction. At a timing when the relative movement position of the air blowing nozzle and the spray gun with respect to the coating range of the object to be coated is at a position corresponding to the end of the coating range,
A control device for causing the air blowing nozzle to perform a discharging operation is provided.

[0006]

According to the present invention, the spray mist spraying range of the spray mist ejected at the position corresponding to the end of the coating range of the object to be painted is blown out from the air blowing nozzle attached to the side of the spray gun. It is limited by the air curtains. Therefore, the paint mist can be prevented from scattering around the end of the coating range of the object to be coated, and the maintenance load such as cleaning in the coating line can be reduced.

[0007]

1 is a schematic view showing a spray coating apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a usage state of the spray coating apparatus.

In the spray coating device 10, the spray gun 11 is movable relative to the coating range W of the object 1 to be coated such as a wall panel.

The article 1 to be coated is intermittently or continuously conveyed in a direction perpendicular to the plane of the drawing, and spray coating is applied by a spray gun 11 provided above the conveying path. And the spray gun 11 is the coating control device 1
The relative movement with respect to the object to be coated 1 is applied by a moving device (not shown) controlled by 2, and the position (left end position) corresponding to one end of the coating range W of the object to be coated 1 and the other end. It is designed to be able to reciprocate between the position corresponding to (right end position).

At this time, in the spray coating apparatus 10, left and right elongated air blowout nozzles 21 and 22 are additionally fixed to both sides of the spray gun 11 in the direction along the relative movement direction. The air supply tubes 21A and 22A connected to the nozzles 21 and 22 are connected to the open / close valves 21B and 22.
B is connected to the air supply device 24 via the regulator 23.

The opening / closing valves 21B and 22B are controlled to be opened / closed by the controller 12 to turn on / off the air blowing operation of the air blowing nozzles 21 and 22. The regulator 23 is
The amount of air blown out from each of the air blowout nozzles 21 and 22 is controlled.

Therefore, the coating control device 12 is used for the object 1 to be coated.
When the relative movement position of the spray gun 11 with respect to the coating range W is at a position corresponding to the end (left end or right end) of the coating range W, opening / closing of the nozzles 21, 22 facing the end is performed. The valves 21B and 22B are controlled to be opened and closed to turn on the blowing operation of the nozzles 21 and 22 facing the ends.

The detection of the timing when the relative movement position of the spray gun 11 is at the position corresponding to the end of the coating range W is (a) the movement position of the above-mentioned moving device of the spray gun 11 (movement amount from the origin). ) Can be detected by a movement amount detector, or (b) the object to be coated detectors 31 and 32 such as reflection type photosensors fixed to both sides of the spray gun 11 can be detected by on / off.

The usage state of the spray coating device 10 will be described below. (1) When the moving position of the spray gun 11 is in the middle of the coating range W of the object to be coated 1, the left and right air blowing nozzles 21,
No. 22 has its blowing operation turned off. Then, the paint ejected from the spray gun 11 is sprayed onto the coating range W of the object 1.

(2) When the spray gun 11 moves leftward and its moving position reaches the leftward end of the coating range W of the object to be coated 1, the control device 12 opens the opening / closing valve 21B and blows out the left nozzle 21. Turn on the action. As a result, the spray gun 11 sprays the paint mist at a position corresponding to the left end of the coating range W of the coating object 1 in a scattering range, and the nozzle 21 on the left side
It will be limited by the air curtain blown from. After that, the spray gun 11 turns to the right,
When the movement position enters inside from the leftward end of the coating range W of the object to be coated 1, the control device 12 closes the opening / closing valve 21B, and the blowing operation of the left nozzle 21 is turned off.

(3) When the spray gun 11 moves to the right and its moving position reaches the right end of the coating range W of the object to be coated 1, the control device 12 opens the open / close valve 22B and the air blowing nozzle 22 on the right side. Turn on the blowing action of. As a result, the spraying range of the paint mist sprayed from the spray gun 11 at the position corresponding to the right end of the coating range W of the object 1 is limited by the air curtain blown from the right nozzle 22. After that, when the spray gun 11 turns to the left and the moving position enters from the right end of the coating range W of the object 1 to the inside, the control device 12 closes the open / close valve 22B and the right nozzle 22. The blowing action of is turned off.

The operation of this embodiment will be described below.
According to the present embodiment, the spray range of the paint mist ejected from the spray gun 11 at the position corresponding to the end of the coating range of the object to be coated 1 is the air blowing nozzle 21 attached to the side of the spray gun 11. , 22 is restricted by the air curtain. Therefore, the paint mist is
It is possible to suppress scattering around the end of the coating range and reduce the maintenance load such as cleaning in the coating line.

In the practice of the present invention, the spray gun may be stationary and the object to be coated may be moved so that they are moved relative to each other.

Further, in the practice of the present invention, the air blowing nozzle may be attached to only one side portion of the spray gun.

[0020]

As described above, according to the present invention, in the spray coating apparatus, it is possible to limit the scattering of the paint mist at the end of the coating range of the object to be coated and reduce the maintenance load such as cleaning. it can.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a spray coating apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic view showing a usage state of a spray coating device.

[Explanation of symbols]

 1 Object to be coated 10 Spray coating device 11 Spray gun 12 Control device 21, 22 Air blowing nozzle

Claims (1)

[Claims] 1. A spray coating apparatus capable of moving a spray gun relative to a coating range of an object to be coated, comprising: an air blowing nozzle attached to a side portion of the spray gun in a direction along the relative movement direction; Spray coating, characterized in that the spray gun comprises a control device for causing the air blowing nozzle to perform a discharge operation at a timing at which the relative movement position of the spray gun with respect to the coating range of the object is at a position corresponding to the end of the coating range. apparatus.