JPH08155359A - Coating equipment for long objects - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a coating apparatus that requires a small occupied space, is low in cost, and is suitable for intermittently coating only a predetermined portion of a long object. A coating device for coating a top surface and a side surface of a long object 1, wherein servo axes 2 and 3 are provided along the top surface and the side surface of the long object 1, respectively. 3, spray coating guns 23, 34 that reciprocate along the axis 3 are provided, and the spray coating guns 23, 34 are provided on the servo shafts 2, 3 so that the angles can be changed by angle changing devices 22, 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating device for a long product, which is suitable for use, for example, in coating different sides of a pillar of an industrial steel square pipe.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 1-310762.
As described in Japanese Patent Publication No. JP-A-2003-264, there is known a coating apparatus that uses an articulated robot to coat a surface to be coated having a complicated shape.

[0003]

However, as described in Japanese Patent Application Laid-Open No. 1-310762, in a coating apparatus using an articulated robot, the apparatus itself is large, the occupied space is large, and the cost is high. Further, in a coating apparatus using an articulated robot, in order to position the coating gun at high speed in order to paint only a predetermined portion of a long object intermittently, the articulated robot has a large inertia, and the articulated robot requires a large amount of inertia. The load becomes excessive.

The present invention relates to the above conventional coating apparatus,
It was made in view of such problems, and its purpose is to solve the above problems, to occupy less space, to reduce the cost, and to intermittently cut only certain parts of long objects. An object of the present invention is to provide a coating device suitable for coating.

[0005]

In order to achieve the above-mentioned object, a coating device for a long product of the present invention is a coating device for a long product for coating the upper surface and side surfaces of a long product. Servo shafts are provided along the upper and side surfaces of the object, respectively, and a spray coating gun that reciprocates along each servo axis is provided. The spray coating gun is provided so that the angle can be changed on the servo axis by an angle changing device. It is characterized by that.

In the present invention, the device for changing the angle of the coating gun is not particularly limited, but it is preferable to use an actuator, and it is particularly preferable to use a pneumatic rotary actuator that is lightweight and has a large driving torque. . The spray coating gun is not particularly limited, but it is preferable to use an HVLP type spray coating gun because of less scattering and high coating efficiency. In addition, HVLP type spray painting gun is High Vo
lume Low Pressure is an abbreviation for an air spray painting gun. Unlike ordinary air sprays that use compressed air for atomization, it realizes atomization with a large amount of air at low pressure.

[0007]

The coating device for a long product of the present invention is a device for coating a top surface and a side surface of a long product, wherein servo axes are provided along the top surface and the side surface of the long product, respectively. ,
A spray painting gun that reciprocates along each servo axis is provided, and the spray painting gun is provided so that the angle can be changed on the servo axis by an angle changing device, so it occupies a small space and is inexpensive. The servo driven part can be made lighter, and high-speed positioning for intermittent coating can be done with a light load.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. 1 is a plan view showing an example of the coating apparatus of the present invention, and FIG. 2 is a front view of the coating apparatus of the present invention shown in FIG.
In FIGS. 1 and 2, reference numeral 1 is a pillar used in an industrialized house, and the pillar 1 is a plurality of wall mounts on the upper and side surfaces when the pillar main body 11 of a square steel pipe is laid down as shown in the figure. The metal fitting 12 is projected by fillet welding. The coating device of the present invention intends to apply rust-preventive coating to the welded portion at the base of the metal fitting 12. Reference numeral 13 is a joint piece attached to both ends of the column main body 11, and the joint piece 1
3 is connected to a beam (not shown).

Reference numeral 2 is a servo axis provided along the upper side of the column 1, and 3 is a servo axis provided along the lateral side of the column 1. A bracket 21 is provided on the servo shaft 2 provided above the column 1 so as to be capable of reciprocating in the longitudinal direction of the servo shaft 2, and a bracket 22 is provided with an actuator 22 for changing a coating gun angle. Is HVLP
A spray painting gun 23 is provided.

A servo shaft 3 provided along the side of the pillar 1.
Is provided with a bracket 31 so as to be capable of reciprocating in the longitudinal direction of the servo shaft 2. The bracket 31 is provided with an actuator 32 for changing the coating gun angle. The actuator 32 is provided with a coating gun lifting cylinder 33 for raising and lowering the coating gun. The cylinder 33 is provided with an HVLP spray painting gun 34.

A servo shaft 2 provided along the upper side of the pillar 1.
The paint is supplied to the spray painting gun 23 and the painting gun 34 of the servo shaft 3 provided along the side of the pillar 1 by a diaphragm pump (not shown).

Brackets 21 on the servo shafts 1, 2;
The reciprocating movement of 31, the actuation of the actuators 22, 32 and the spray painting guns 23, 34 are controlled by a controller. 4 is a conveyor for conveying two pillars,
41 is a guide for guiding the pillar 1 to a predetermined position,
1 is provided on the side of the conveyor 4. 42 is a pillar detection photoelectric sensor provided in the guide 41, 43 is a stopper for stopping the pillar 1 at a predetermined position, and 44 is a fitting detection photoelectric sensor provided corresponding to the fitting 12.

[Operation of the Embodiment] The operation of the coating apparatus of the present invention shown in FIGS. Arrow a by conveyor 4
The column 1 conveyed in the direction indicated by is temporarily stopped by the stopper 43 at a position before the servo shafts 2 and 3, the column detection photoelectric sensor 42 detects the column 1, and a start signal is transmitted. The metal fitting mounting pattern attached to the pillar 1 is read by, the stopper 43 is released, the pillar 1 is passed below the servo shaft 3, and the pillar 1 is conveyed to a position below the servo shaft 2 and stopped by the stopper 43.

At the position below the servo shaft 2, the pillar 1 detects the pillar 1 by the pillar detection photoelectric sensor 42 and transmits a start signal. Above the pillar 1, as shown in FIGS. The spray coating gun 23 reciprocates in the directions indicated by arrows b and c along the longitudinal direction, and the metal fitting detection photoelectric sensor 4
In accordance with the metal fitting mounting pattern detected by 4, the rust preventive paint is intermittently ejected from the spray painting gun 23 as shown by the arrow d, and the welded portion of the base of the metal fitting 12 on the upper surface of the pillar 1 is painted.

Similarly, with respect to the metal fitting 12 on the side surface of the pillar 1, the spray coating gun 34 reciprocates along the longitudinal direction of the servo shaft 3, and according to the metal fitting mounting pattern detected by the metal fitting detecting photoelectric sensor 44, the spray coating gun 34. The rust preventive paint is intermittently ejected from 34 to apply the paint to the welded portion of the base of the metal fitting 12 on the side surface of the pillar 1.

In this way, when the coating is applied from above the welded portions of the metal fittings 12 on the upper and side surfaces of the pillar 1, the pillar 1 is conveyed by the conveyor 4 in the direction indicated by the arrow a and conveyed to the next step. To be done.

The embodiments of the present invention have been described above with reference to the drawings. However, the specific configuration of the present invention is not limited to the illustrated embodiments, and design changes within the scope not departing from the gist of the present invention are as follows. Included in the invention. For example, actuation of brackets, actuators, paint guns may use a sequencer instead of using a controller as in the above embodiments.

[0018]

The coating device for a long product of the present invention is a device for coating a top surface and a side surface of a long product, wherein servo axes are provided along the top surface and the side surface of the long product, respectively. A spray painting gun is provided that moves back and forth along each servo axis.The spray painting gun is provided on the servo axis so that the angle can be changed by an angle changing device, so it occupies a small space and is inexpensive. , The part that is servo-driven by the servo axis can be lightened, and high-speed positioning for intermittent coating can be done with a light load.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a coating apparatus of the present invention.

FIG. 2 is a front view of the coating apparatus of the present invention shown in FIG.

FIG. 3 is a perspective view of a pillar coated by the coating apparatus of the present invention shown in FIG.

FIG. 4 is a perspective view showing an aspect in which a pillar is coated by the coating apparatus of the present invention shown in FIG.

5 is a perspective view showing an aspect in which a pillar is coated by the coating apparatus of the present invention shown in FIG.

[Explanation of symbols]

 1 Pillar (long product) 11 Pillar main body 12 Metal fitting 13 Joint piece 2, 3 Servo shaft 21, 31 Bracket 22, 32 Actuator (angle changing device) 23, 34 Spray painting gun 33 Lifting cylinder 4 Conveyor 41 Guide 42 Pillar detection sensor 43 Stopper 44 Metal fitting detection sensor

Claims (1)

[Claims] 1. A coating device for a long object for coating the upper surface and side surfaces of a long object, wherein servo axes are respectively provided along the upper surface and side surfaces of the long object, and reciprocate along each servo axis. A spray coating gun is provided, and the spray coating gun is provided on the servo shaft so that the angle can be changed by an angle changing device.