JPH08281162A - Outer surface painting device of steel pipe - Google Patents

Abstract

PURPOSE: To paint the outer surfaces of a number of steel pipes without uneveness continuously and automatically by making it possible to establish a clearance of a specified distance between the steel pipes aligned side by side by a magnet base of excitation mechanism, when painting the outer peripheral surfaces of the steel pipes using an atomization spray. CONSTITUTION: A steel pipe 11 moves rollingly on the upper surface of a skid 2 tilted by an air cylinder 3. But the first steel pipe 11 is stopped by a stopper 4. In addition, steel pipes 11 are stopped by causing intermediate stoppers 9, 10 to protrude sequentially, if 1/3 of the total number of the steel pipes moved in. Then, the skid 2 is restored to a horizontal state, and the intermediate stoppers 9, 10 are moved back. Next, the steel pipes are caused to repel each other by exciting the magnet of a magnet base 1 so that an equal space is formed between the steel pipes. Under this state, a first round of painting is performed by a spray device, and each steel pipe 11 is caused to roll by moving the magnet base 1 to receive a second round of painting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel pipe outer surface coating apparatus capable of simultaneously coating the outer surfaces of a plurality of steel pipes evenly.

[0002]

2. Description of the Related Art Conventionally, when painting the outer surface of a steel pipe,
Brushes were applied manually one by one. When painting multiple steel pipes, place multiple steel pipes in parallel on the skid and keep the steel pipes in close contact with each other, and then perform brush painting or spray spraying manually, and after the paint has dried, A general method is to peel off the coating film portion, perform maintenance, and then invert the steel pipe to apply the coating material.

[0003]

However, in the conventional plural coating method, it is easy to form the bridge of the coating film between the steel pipes, and a large space is required to eliminate it. It was

Therefore, an object of the present invention is to provide a steel pipe outer surface coating apparatus which separates a steel pipe from each other and can automatically and efficiently perform coating in a small space without unevenness. To provide.

[0005]

Means for Solving the Problems The inventors have conducted extensive studies to solve the above-mentioned problems. As a result, it has been found that a pipe traverse conveyor device is proposed in Japanese Patent Publication No. 5014020 as a device that can open and separate a predetermined distance between steel pipes. The present invention was made based on the above findings.

According to the first aspect of the present invention, a skid for moving a plurality of steel pipes while rolling them and arranging them in parallel, and a skid at each of the front and rear ends of the skid in the moving direction of the steel pipe so as to be projectable from the skid upper surface. With the provided stopper,
An inclining mechanism for inclining the skid toward the moving direction of the steel pipes, an exciting mechanism for exciting each of the parallel steel pipes to form a predetermined gap between the respective steel pipes, and the parallel steel pipes A spray mechanism for spraying paint from above, the stopper is provided movably in the steel pipe moving direction when protruding, the excitation mechanism is movable in the steel pipe moving direction, and the stopper and / or the stopper is provided. By moving the exciting mechanism in the steel pipe moving direction by a predetermined distance, the steel pipes arranged in parallel on the skid can roll in the circumferential direction by a predetermined angle. The invention according to claim 1 is characterized in that an intermediate stopper is provided at an intermediate portion of the skid so as to project from the upper surface of the skid.

[0007]

[Function] The outer peripheral surface of the steel pipe is spray-painted to paint. A gap of a predetermined distance is provided between the steel pipes arranged in parallel by the magnet base of the exciting mechanism so that the paint does not form a bridge between the steel pipes. The steel pipe moves while rolling on the skid and is placed on the magnet base. When the number of steel pipes is large, if all of them are put together in one place, then it will take time to open a predetermined gap between the steel pipes due to the magnetic force, and the accuracy will deteriorate. A stopper (intermediate stopper) is provided at a predetermined position to prevent this. When the skid is horizontal and excited by an electric current flowing through the magnet, the parallel steel pipes repel each other and spread between the stoppers at both ends of the skid with a certain space. This spacing should be minimized to the extent that it does not form a bridge.

The spray atomizing mechanism moves uniformly above the steel pipe group to coat a part (upper surface) of the outer peripheral surface of the steel pipe. When the coating is completed and the surface is dried, the magnet base and / or the stopper is moved in the steel pipe moving direction by a preset distance according to the diameter of the steel pipe to roll (rotate) the steel pipe at a predetermined angle. In this way, the painting operation is repeated 90 times.
When the entire surface of the steel pipe has been painted by repeating the angle of °, the magnetic force is cut off, the skid is tilted, the steel pipe is rolled and discharged, and the work is completed. By repeating this operation, it is possible to continuously and automatically apply the coating evenly to the outer surfaces of many steel pipes.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, showing the positional relationship between a stopper and an air cylinder when a skid is in an inclined state. FIG. 2 is a partially cutaway side view showing the positional relationship between the magnet base and the skid when the skid is in the horizontal state. 3 is a plan view showing a positional relationship between a magnet base, a skid, and a steel pipe according to one embodiment of the present invention, FIG. 4 is a front view, and FIG. 5 is a perspective view showing a positional relationship between the magnet base and the steel pipe.

The coating apparatus of the present invention comprises a plurality of steel pipes 11
Is movable while rolling on the upper surface, and front end stoppers 4 provided at both front and rear ends of the skid 2 in the steel pipe moving direction (left and right direction in FIGS. 1 and 2) so as to project from the upper surface of the skid 2. Between the rear end stopper 5, the air cylinder 3 as an inclining mechanism for inclining the skid 2 toward the moving direction of the steel pipe 11, and the steel pipes 11 juxtaposed on the upper surface of the skid 2 are excited between the steel pipes 11. A magnet base 1 as an excitation mechanism for opening a predetermined gap in the space, a spray mechanism 7 for spraying the paint from above the parallel steel pipes 11, and a skid 2 in the middle of the skid 2.
And intermediate stoppers 9 and 10 provided so as to project from the upper surface of the. Although the protruding / storing mechanism of the intermediate stoppers 9 and 10 is not shown in the figure, it has the same structure as the stopper 4. The magnet base 1 and the front end stopper 4 can be horizontally moved in the steel pipe moving direction by the electric motor 6, and the rear end stopper 5 can be horizontally moved in the steel pipe moving direction by the electric motor 8. As shown in FIGS. 3 to 5, the magnet base 1 includes a steel pipe 11
Has a horseshoe-shaped magnet 14 provided along the rolling direction of the steel pipe at a predetermined distance below the
Due to the magnetic force of the horseshoe-shaped magnet 14 serving as the pole and the N pole, the steel pipes 11, which are magnetic bodies, repel each other and separate from each other.

The operation of this embodiment will be described. The steel pipe 11 is
From the front skid 13 (left side in FIGS. 1 and 2), the front and rear ends are left by the action of the air cylinder 3 (see FIGS. 3 and 4).
(Refer to FIG. 3), it moves while rolling on the upper surface of the skid 2 which is inclined toward the stopper 4. The first steel pipe 11 that is sequentially moved and supplied is stopped and positioned by the stopper 4. When one third of the total number of steel pipes to be supplied has moved, the supply is temporarily stopped and the intermediate stopper 9 is projected from the skid 2. Then, the next ⅓ is similarly sent out. The supply of the steel pipe 11 is stopped again, the intermediate stopper 10 is projected, and the remaining 1/3 of the steel pipe 11 is sent out. In this way, the steel pipes on the skid 2 are not gathered at one place but dispersed and juxtaposed, so that it becomes easy to open a predetermined gap between the steel pipes by the magnetic force. After the last supplied steel pipe 11 is sent out, when the steel pipe 11 is stationary, the stopper 5 is projected to hold the steel pipe group 11 between the stoppers 4 and 5. The stopper 5 has a preset position determined in advance by the diameter and the number of the steel pipes 11.

Next, the skid 2 is made horizontal by the action of the air cylinder 3, and then the intermediate stoppers 9 and 10 are housed. Then, the magnets of the magnet base 1 are excited to cause repulsion between the steel pipes, and the stoppers 4 and 5
And the steel pipes are evenly spread to each other. In this state, the spray device 7 performs the first coating. As a result, a part (upper surface) of the outer peripheral surface of the steel pipe is painted.

After the first coating is finished, the magnet base 1 and the stoppers 4 and 5 are simultaneously moved to the right or left by the electric motors 6 and 8 by a distance preset according to the diameter of the steel pipe 11 to move the steel pipe 11 together. Rotate by a predetermined angle,
The next painting state.

This is repeated, for example, a plurality of times, for example, four times to coat the entire circumference of the steel pipe. When the painting is completed, the magnetic force of the magnet base 1 is cut off, the skid 2 is tilted by the air cylinder 3, the stopper 4 is lowered, and the steel pipe 11 is rolled down to the rear skid 12 with the front and rear ends left. When the payout of the steel pipe 11 is completed in this manner, the magnet base 1 and the stoppers 4 and 5 are returned to their original positions by the electric motors 6 and 8 to be in the initial state. The present invention can be applied to a metal tube that reacts with a magnet in addition to a steel tube.

[0016]

As described above, according to the present invention, when coating the outer surfaces of a plurality of steel pipes, a desired gap can be formed between the steel pipes by using the exciting mechanism. The coating unevenness can be prevented, and by rotating the steel pipe, the entire circumference of the steel pipe can be automatically coated, which enables labor saving and high efficiency in the work, and thus an industrially useful effect. Is brought about.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 3 is a plan view showing a positional relationship between a magnet base, a skid, and a steel pipe according to an embodiment of the present invention.

FIG. 4 is a front view showing a positional relationship between a magnet base, a skid, and a steel pipe according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a positional relationship between a magnet base and a steel pipe according to an embodiment of the present invention.

[Explanation of symbols]

 1: magnet base 2: skid 3: air cylinder 4: front end stopper 5: rear end stopper 6: electric motor 7: spraying mechanism 8: electric motor 9: intermediate stopper 10: intermediate stopper 11: steel pipe 12: rear surface skid 13: front skid 14: Horseshoe magnet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunio Todo, Kunio Todo, Marunouchi 1-2-2, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Yuji Sugimoto, 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Main Steel Pipe Co., Ltd. (72) Inventor Hideya Nagasaka 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Inventor Isao Inoue 2-2-13- Namiki, Kanazawa-ku, Yokohama-shi, Kanagawa 101 (72) Inventor Hideo Hirai 4-24-1 Nakarokugo, Ota-ku, Tokyo (72) Inventor Tokuo Jichi 5-13-1 -308 Isobe, Mihama-ku, Chiba City, Chiba Prefecture

Claims (2)

[Claims] 1. A skid for moving a plurality of steel pipes while rolling and arranging the steel pipes in parallel, and stoppers provided at both front and rear ends of the skid in the steel pipe moving direction so as to project from the skid upper surface. An inclining mechanism for inclining the skid toward the moving direction of the steel pipes, an exciting mechanism for exciting each of the parallel steel pipes to form a predetermined gap between the respective steel pipes, and the parallel steel pipes A spray mechanism for spraying paint from above, the stopper is provided movably in the steel pipe moving direction when protruding, the excitation mechanism is movable in the steel pipe moving direction, and the stopper and / or the stopper is provided. By moving an exciting mechanism by a predetermined distance in the steel pipe moving direction, the steel pipes arranged in parallel on the skid can roll in the circumferential direction by a predetermined angle. External coating equipment for steel pipes. 2. The outer surface coating apparatus according to claim 1, wherein an intermediate stopper is provided at an intermediate portion of the skid so as to project from the upper surface of the skid.