JPS61178056A - Automatic painting system - Google Patents

Abstract

PURPOSE:To simplify the constitution of a system and to perform teaching only once, by making it possible to perform the blowing of air and painting through the change-over operation of a change-over valve by one painting spray gun. CONSTITUTION:The air blow control by a microcomputer system 4 is performed so that atomizing air is supplied through a three-port/2-position change-over valve 3 in such a state that a needle 51 is closed through a three-port/2-position change-over valve 2 to stop the supply of a paint. In this case, the paint is not injected from a paint spray gun 50 and dust can be blown off by the air blow due of atomizing air. The control of painting is performed in succession to the air blow control process or so as to interpose a stop period and not only atomizing air is injected but also the needle 51 is opened through the three-port/2-position change-over valve 2 to supply the paint. By this method, the atomized paint is injected.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" This invention relates to an automatic painting system using a paint spray gun.

``Prior art'' When painting using a paint spray gun, the workpiece is air-blown before painting to blow away dust on the surface of the workpiece.
It is normal to do so. In conventional automatic painting systems, this air blowing is performed using an air blowing gun provided separately from the paint spray gun.

However, providing a paint spray gun and an air blow gun separately increases the burden on the equipment, and it is inconvenient that the operation control of each gun must be taught separately.

``Object of the Invention'' An object of the present invention is to provide an automatic painting system that performs both air blowing and painting using two guns.

"Structure of the Invention" The automatic painting system of the present invention is an automatic painting system using a paint spray gun, and includes a paint supply on/off means and an atomizing air supply on/off means,
A blow control means for blowing a workpiece with air only by the atomizing air by turning off the paint supply on/off means and turning on the atomizing air supply on/off means, and after the air blow, the paint supply on/off means and the atomizing air. The present invention is characterized in that it includes a coating control means that sprays atomized paint onto a workpiece by turning on both the supply on/off means.

In the configuration described above, conventionally known means of this type can be used as the paint supply on/off means and the atomizing air supply on/off means.

Further, in the above configuration, the air blow control means and the coating control means can be constructed by, for example, a microcomputer system.

"Example" Hereinafter, it will be further described in detail based on the example shown in the drawings. FIG. 1 is a diagram illustrating the configuration of an automatic painting system according to an embodiment of the present invention, and FIG. 2 is a time chart illustrating essential parts of the operation of the automatic painting system shown in FIG. 1.

In the automatic painting system 1 shown in FIG. 1, the paint spray gun 50 is the same device as the conventionally known paint spray gun, and the paint is supplied by opening the needle 51 from the paint supply hole 52, and the atomizing air is atomized. conversion air supply hole 5
3, and pattern air is further supplied from the pattern air supply hole 54.

To open and close the needle 51 for turning on and off the supply of paint, the microcomputer system 4 outputs a paint on/off signal a to the 3-bot 2-position switching valve 2, and the 3-bot 2-position switching valve This is done by switching the position of 2 to turn on and off the control air to the needle 51.

To turn on and off the supply of atomizing air, the microcomputer system 4 outputs an atomizing air supply control signal to the 3-bot, 2-position switching valve 3, and then controls the position of the 3-bot, 2-position switching valve 3. This is done by switching.

This paint spray gun 50 is moved by a robot (path shown) and is used to paint a workpiece (path shown).

The microcomputer system 4 is internally programmed with a robot control procedure for moving the paint spray gun 50, as well as an air blow control procedure and a painting control procedure.

First is the air blow control procedure, which is a new configuration that has never existed before. That is, while the needle 51 is closed through the 3-bot, 2-position switching valve 2 and the supply of paint is stopped for one time, atomizing air is supplied via the 3-bot, 2-position switching valve 3. The first step of AirPro shown in FIG. 2 shows the state at this time, and no paint is sprayed from the paint spray gun 50.
Only atomizing air is blown out. This air blow can blow away dust.

Next is the painting control procedure, which is carried out either following the air blowing control procedure described above or after the stop time, in which atomizing air is blown out and the needle 51 is opened via the 3-point/2-position switching valve 2 to spray the paint. supply This causes the atomized paint to be ejected. The painting process shown in FIG. 2 shows the state at this time.

When a predetermined coating is completed, the needle 51 is closed to stop the supply of paint, and then the three-bottom, two-position switching valve 3 stops the supply of atomizing air.

As described above, by first executing the air blow control procedure and then executing the painting control procedure, air blow and painting are executed together with the second painting spray gun 50, and painting is performed appropriately. .

Another example is one in which the position of the 3-point/2-position switching valve 3 is intermittently switched in the air blow control procedure to perform air blow intermittently.

"Effects of the Invention" According to the present invention, an automatic painting system using a paint spray gun is provided with a paint supply on/off means and an atomizing air supply on/off means, and a paint supply on/off means. an air blow control means for blowing the workpiece with only atomizing air by turning on the atomizing air supply on/off means; and after the air blowing, a paint supply on/off means and an atomizing air supply on/off means An automatic painting system is provided, characterized in that it is equipped with a painting control means that sprays atomized paint onto a workpiece by turning on both the paint spray gun and the paint spray gun, which allows air blowing and painting to be performed with a single paint spray gun. As a result, the system configuration becomes much simpler and teaching can be completed only once.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the configuration of an automatic painting system according to an embodiment of the present invention, and FIG. 2 is a time chart illustrating a main part of the operation of the automatic painting system shown in FIG. (Explanation of symbols) l...Automatic painting system 2.3...3-bottom 2-position switching valve 4...Microcomputer system 50...Paint spray gun 51...Needle 52...Paint Supply hole 53...Atomization air supply hole. Figure 1 Figure 2

Claims (1)

[Claims] 1. An automatic painting system using a paint spray gun, which is equipped with a paint supply on/off means and an atomizing air supply on/off means, and is also equipped with a paint supply on/off means and an atomizing air supply on/off means. An air blow control means turns on the off means and blows the work with only atomizing air, and after the air blow, both the paint supply on/off means and the atomizing air supply on/off means are turned on to apply the atomized paint to the work. An automatic painting system characterized by being equipped with a spraying painting control means.