JPS625666B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic painting method.

The inventor has developed an automatic coating device for the outer panels of ships, and has achieved significant labor-saving and pollution prevention effects. However, with conventional automatic painting equipment, painting is done by simply moving the paint gun back and forth perpendicular to the direction in which the painting equipment moves along the ship's exterior.
Therefore, the coating pattern becomes a zigzag pattern as shown in Figure 1, and in order to coat the surface evenly without leaving any uncoated surfaces, the coating overlaps considerably as shown in the figure, resulting in an incomplete coating. As the thickness became more uniform, the amount of paint used increased. In order to avoid this duplication of coating, it is possible to solve the problem by moving the coating equipment intermittently, but it is difficult to move the coating equipment smoothly due to the inertia of the coating equipment. Moreover, when the coating equipment was moved intermittently, the coating efficiency decreased.

The present invention has been developed in view of the above points, and it is possible to avoid overlapping coating on the surface to be treated and use the paint effectively, and it is possible to move the coating device continuously without having to move it intermittently. To provide an automatic coating method that can efficiently coat a surface to be treated.

Hereinafter, the present invention will be explained based on examples.

FIGS. 2 to 4 show an embodiment of the present invention, which was applied to the coating of the outer panel of a ship. Painting device 1
is the self-propelled aircraft 3 installed in the dock 2 as shown in Figure 2.
Lifting and lowering with the arm lifting device 4 and arm rotating device 5,
The outer panel 10 of a ship 9 is mounted on a pedestal 8 at the tip which is maintained horizontally by a link member 7 of a rotatable arm 6.
The surface 11 to be treated is movably coated. The coating device 1 includes a coating gun 1 that is driven reciprocally over a predetermined distance by a reciprocator 12 to coat a surface 11 to be treated, as shown in FIGS. 3 and 4.
3 is covered with a box-shaped hood 14 having an open front. The hood part 15 is a support material 16
A vertical rotation device 17 such as an electric hydraulic cylinder is provided on both sides of the hood 14, and a hydraulic cylinder-driven longitudinal movement device 18 and a horizontal rotation device 19 are provided at the bottom of the support member 16, respectively. Thus, the hood portion 15 can be rotated by a predetermined angle in the vertical and horizontal directions, and can be driven by a predetermined amount in the front and rear directions. Further, the outer circumference of the hood 14 is
As shown in Figures 3 and 4, it has a double cylindrical structure, with air supply fans 20 and 21 like wide Sirotskov fans arranged at the upper and lower rear portions, and a double cylindrical air blowing section. Air is uniformly supplied to 22 and blown toward the surface to be treated 11 to form an air seal, thereby preventing paint mist from scattering to the outside from the hood part 15. In addition, intake fans (not shown) of a predetermined capacity are arranged on both sides of the rear part of the hood part 15, and a mist collector is arranged on the inner circumference so as to be inclined toward the reciprocator 12 at the rear part. 23, the paint mist is adsorbed and collected. On the other hand, the reciprocator 12 is connected to the hood 1 as shown in FIGS. 3 and 4.
4, the rear center portion of which is pivotally supported on a support 24, a swing drive device 25 such as a motor with angle detection, and a swing device 26 such as a rack and pinion mechanism;
The upper and lower guide portions 27 and 28 are arranged so as to be able to rotate at an appropriate angle. 29, 30, 31, 32
are position detectors such as high-frequency detectors disposed at the center of the front of each circumference of the hood 14, and are connected to the vertical rotation device 1 via a control device (not shown).
7. Electrically connect the back and forth movement device 18, horizontal rotation device 19, and self-propelled machine 3 to control the position so that the front surface of the hood 14 faces the surface to be treated at a predetermined distance, and paint along the surface to be treated 11. This allows the device 1 to follow.

Therefore, when automatically painting a predetermined surface 11 to be treated of the outer panel 10 of the ship 9, the moving speed v of the painting gun 13 of the reciprocator 12 is determined as shown in FIG.
The turning angle of the reciprocator 12 is set so that the vector sum of the horizontal movement speed V of the self-propelled machine 3 and the horizontal movement speed V of the self-propelled machine 3 is in the vertical direction, and the horizontal direction component of the horizontal movement speed of the coating device 1 and the movement speed of the coating gun 13 is set. When moving the coating gun 13 from above to below to perform coating, the reciprocator 12 is rotated by the above-mentioned predetermined angle with respect to the direction of movement of the coating device 1 using the swing drive device 25 as shown in FIG. Conversely, when moving the coating gun 13 from below to above for painting, the reciprocator 12 is rotated at a predetermined angle as shown by the dotted line in FIG. Then, the coating gun 13 is stopped at the upper and lower limits for a predetermined period of time without spraying, corresponding to the spray width to be coated on the surface to be treated 11, and the coating is automatically performed while preventing the coating from crossing over and overlapping. . In this way, the outer panel 10 of the ship 9 can be painted in a predetermined width in parallel from the top to the bottom and from the bottom to the top, as shown in FIG. It is possible to avoid overlapping and overlapping, and achieve a uniform coating film and effective use of paint.

FIG. 7 shows another embodiment of the painting method of the present invention, in which painting is performed using the painting gun 13 of the reciprocator 12 only on one side.
In this embodiment, the reciprocator only needs to be tilted at a predetermined angle in advance, which simplifies the device and control.

In the above embodiments, the reciprocator was rotated or tilted at a predetermined angle, but the painting gun was
It can also be driven in a square shape as shown in the figure or in a triangular shape as shown in FIG. Furthermore, it is also possible to tilt the coating apparatus itself without tilting the reciprocator at a predetermined angle.

Although the present invention has been described for painting the outer panels of ships, it is equally applicable to tanks, walls, etc., and is preferable when moving the coating equipment, but it is also applicable when moving the object to be treated. This can be similarly applied to other cases.

As described above, according to the present invention, it is possible to avoid overlapping and overlapping coatings on the surface to be treated, thereby making it possible to use the coating material effectively, and to move the coating device continuously without having to move it intermittently. Because it can be done,
The surface to be treated can be coated efficiently.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an embodiment of a conventional coating pattern, and FIGS. 2 to 4 are a partially omitted schematic overall side view of an embodiment of the present invention, and a front view and a side view of a coating device. , Figure 5 is a diagram for explaining the principle of painting as above, Figures 6 and 7 are diagrams for explaining the painting pattern as above, respectively, and Figures 8 and 9 are for explaining other operating mechanisms of the painting gun as above. It is a diagram. 1...Painting equipment, 9...Ship, 10...Outer panel,
11... Surface to be processed, 12... Reciprocator, 1
3...Painting gun.

Claims (1)

[Claims] 1. In automatic painting, in which the coating gun is reciprocated over a predetermined range and the coating device is moved along the surface to be treated to coat the surface, the surface to be treated is painted perpendicular to the direction of movement of the coating device. In order to do this, the moving direction of the painting gun is deflected vectorwise at a predetermined angle with respect to the moving direction of the painting device, and the horizontal movement speed of the painting device and the horizontal component of the movement speed of the painting gun are driven equally, so that the painting gun is moved first. An automatic coating method characterized in that the coating device is positioned and driven according to the movement of the coating device so as not to overlap with the surface to be treated which has been previously coated, and the surface to be treated is sequentially coated.